ПНЕВМАТИЧЕСКИЙ МОЛОТОК

FIELD: tools. SUBSTANCE: invention relates to pneumatic hammers. Hammer comprises a working tool, a casing with outlet holes, a cylindrical housing accommodating a sticker with a through axial hole, which divides the housing cavity into chambers of working and idle strokes, and a cover with an axial multichannel tube intended for compressed air inlet into the working stroke chamber. Casing envelopes the housing to form an outlet chamber. Tube is provided with outlet radial and longitudinal channels and bypass radial and longitudinal channels and tiers of radial bypass channels, squares of cross-sections of which increase towards the idle stroke chamber. Cover has a radial channel. In the housing there is a longitudinal and a radial channels. EFFECT: as the result reduced is air consumption, increased are impacts frequency and energy. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 601 900 C2 (51) МПК B25D 9/04 (2006.01) B25D 9/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014104069/02, 05.02.2014 (24) Дата начала отсчета срока действия патента: 05.02.2014 (43) Дата публикации заявки: 10.08.2015 Бюл. № 22 (45) Опубликовано: 10.11.2016 Бюл. № 31 2 6 0 1 9 0 0 R U (54) ПНЕВМАТИЧЕСКИЙ МОЛОТОК (57) Реферат: Изобретение относится к пневматическим молоткам. Молоток содержит рабочий инструмент, кожух с выпускными отверстиями, цилиндрический корпус, размещенный в нем ударник со сквозным осевым отверстием, разделяющий полость корпуса на камеры рабочего и холостого ходов, и крышку, содержащую осевую многоканальную трубку и предназначенную для впуска сжатого воздуха в камеру рабочего хода. Кожух охватывает корпус с образованием выпускной камеры. Трубка Стр.: 1 выполнена с выпускными радиальным и продольным каналами и перепускными радиальным и продольным каналами и ярусами радиальных перепускных каналов, площади сечений которых увеличиваются в сторону камеры холостого хода. В крышке выполнен ...

Пневматический молот

Изобретение относится к строительной технике и может быть применено в качестве пневматического молота для разрушения каменных карьерных негабаритов, мерзлого грунта, бетонных фундаментов, дорожных покрытий и т.п. материалов и конструкций. Технический результат - увеличение импульса сил давления для разгона ударника как при холостом, так и рабочем его ходе, возрастание кинетической энергии ударника с последующей передачей его хвостовику рабочего инструмента. Пневматический молот включает пневмоударный механизм дроссельно-бесклапанного типа, содержащий рабочий инструмент с хвостовиком, цилиндрический корпус, стакан с каналом подвода воздуха из сети, закрепленный разъемно относительно корпуса, кольцевой фланец с центральным отверстием, торцевую предкамеру, образованную между стаканом и кольцевым фланцем, размещенный в корпусе ударник со сквозным осевым отверстием и разделяющий полость корпуса на камеры рабочего и холостого ходов, установленный в центральном отверстии кольцевого фланца стержень-трубку ...

ПНЕВМАТИЧЕСКИЙ МОЛОТОК

Изобретение относится к пневматическому молотку. Молоток содержит ударник, цилиндрический корпус, рабочий инструмент, рукоять с устройством впуска, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным отверстием. Образованная корпусом рукояти и перегородкой предкамера сообщена воздухоподводящим каналом с сетью сжатого воздуха. Ударник выполнен со сквозным осевым каналом для пропуска трубки и разделяет полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки и камеру холостого хода со стороны рабочего инструмента. Цилиндрический корпус снабжен перепускным канал-пазом с постоянно открытыми выходами в камеру холостого хода и камеру рабочего хода. Перепускной винтовой канал-паз выполнен на боковой поверхности внутренней полости цилиндрического корпуса в виде дренажного винтового ...

ПНЕВМАТИЧЕСКИЙ УДАРНЫЙ МЕХАНИЗМ

Изобретение относится к области строительства, горного дела и машиностроения. Ударный механизм включает цилиндрический корпус с выпускными каналами и установленной в нем втулкой, ступенчатый ударник со штоковой и основной частью, сквозным отверстием и втулкой в штоковой части с канал-пазом, разделяющий полость корпуса на камеру холостого хода со стороны хвостовика и кольцевую рабочую, кольцевой фланец с каналами подвода воздуха из сетевой камеры, жестко закрепленный относительно кольцевого фланца стержень, постоянно находящийся в сквозном отверстии ударника и взаимодействующий с канал-пазом втулки, рабочий инструмент с хвостовиком, кольцевую распределительную камеру, сообщенную с одной стороны с сетевой камерой посредством каналов подвода воздуха кольцевого фланца и с другой стороны с кольцевой рабочей камерой посредством кольцевого дроссельного канала, при этом стержень установлен с возможностью периодического сообщения, в зависимости от положения ступенчатого ударника, кольцевой распределительной ...

Пневматический молот

Изобретение относится к пневматическим машинам ударного действия и может быть применено в строительстве, горном деле и машиностроении. Пневматический молот содержит цилиндрический корпус, рабочий инструмент, удерживаемый относительно цилиндрического корпуса, рукоять с устройством впуска воздуха, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным отверстием, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, образованную корпусом рукояти и перегородкой и сообщенную посредством воздухоподводящего канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющий полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки, постоянно сообщенную с предкамерой посредством впускного дросселя в перегородке ...

Пневматический молот

Изобретение относится к пневматическим машинам ударного действия и может быть применено в строительстве, горном деле и машиностроении. Пневматический молот содержит цилиндрический корпус, рабочий инструмент, удерживаемый относительно цилиндрического корпуса, рукоять с устройством впуска воздуха, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным отверстием, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, образованную корпусом рукояти и перегородкой и сообщенную посредством воздухоподводящего канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющий полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки, постоянно сообщенную с предкамерой посредством впускного дросселя в перегородке ...

Пневматический молот

Изобретение относится к пневматическим машинам ударного действия и может быть применено в строительстве, горном деле и машиностроении. Пневматический молот содержит цилиндрический корпус, рабочий инструмент, удерживаемый фиксатором относительно цилиндрического корпуса, рукоять с устройством впуска, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным отверстием, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, образованную корпусом рукояти и перегородкой и сообщенную посредством воздухоподводящего канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющий полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки, постоянно сообщенную с предкамерой посредством впускного дросселя в перегородке ...

УСТРОЙСТВО ДЛЯ ПНЕВМАТИЧЕСКОГО МОЛОТА

FIELD: construction.SUBSTANCE: invention relates to the construction equipment, and can be used as the pneumatic hammer for destruction of the pit oversize materials, frozen soil, concrete foundations and pavement, etc., materials and structures. Device contains a throttle-valve type pneumatic impact mechanism, a working tool with a shank, a cylindrical body, a cup with a channel for supplying air from the network, an annular flange with a central hole and a throttle inlet channel, placed in the cylindrical case of the drummer with a through axial hole and a bypass blind channel on the side surface and dividing the cavity of the cylindrical case into the chambers of the working and idling strokes, rod-tube installed in the central hole of the ring flange, passed through the central hole in the glass and fixed relative to it. Front annular bypass chamber is made in the idling chamber on the shank side of the working tool and the rear annular bypass chamber in the form of notches separated by a collar so that when the notches interact with the deaf channel of the bypass on the side surface of the striker, the annular deceleration chamber is connected to the annular accumulation chamber, and in the supported on the working tool shank striker position, the front annular bypass chamber and the rear annular bypass chamber communicate with the accumulation chamber and the annular deceleration chamber. Overflow deaf channel on the side surface of the impactor is made in the form of a channel-groove or channel-flat with varying longitudinal section and is formed by a curvilinear surface with a curvature not lower than the second order turned by the curvature in the direction of the axial through hole of the striker.EFFECT: efficiency of using the internal energy of the air, increasing the energy of a single blow and the air flow in the working process of the pneumatic hammer are increased.1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 678 274 C1 (51) МПК E21C 37/24 ( ...

Устройство для пневматического механизма ударного действия

Изобретение относится к пневматическому механизму ударного действия. Пневматический механизм ударного действия содержит пневмоударный механизм дроссельно-клапанного типа с корпусом с цилиндрической полостью, рабочий инструмент с хвостовиком, стакан с центральным отверстием и дроссельным каналом впуска, торцевую предкамеру сетевого воздуха, образованную между стаканом и кольцевым фланцем, размещенный в цилиндрической полости корпуса ударник, имеющий сквозное осевое отверстие и канал-паз перепуска. Канал-паз перепуска расположен на торце ударника со стороны кольцевого фланца и на боковой поверхности ударника. Ударник разделяет цилиндрическую полость корпуса на камеры рабочего и холостого ходов. В центральном отверстии кольцевого фланца и в центральном отверстии в стакане расположена стержень-трубка. В камере рабочего хода со стороны кольцевого фланца выполнена кольцевая камера торможения и кольцевая распределительная камера. Камера холостого хода сообщена с кольцевой распределительной камерой и кольцевой камерой торможения в положении ударника, опертого на хвостовик рабочего инструмента. Канал-паз перепуска на боковой поверхности ударника выполнен в виде винтового канал-паза с поперечным сечением треугольной формы. В результате повышается кинетическая энергия удара и снижается расход воздуха. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 694 856 C1 (51) МПК B25D 9/04 (2006.01) B25D 9/08 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B25D 9/04 (2019.05) (21)(22) Заявка: 2018131892, 04.09.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 17.07.2019 (45) Опубликовано: 17.07.2019 Бюл. № 20 2 6 9 4 8 5 6 R U (56) Список документов, цитированных в отчете о поиске: RU 2603525 C1, 27.11.2016. SU 1172692 A1, 15.08.1985. RU 2361723 C1, 20.07.2009. DE 546489A, 14.03.1932. (54) Устройство для пневматического механизма ударного действия (57) Реферат: Изобретение относится к ...

ПНЕВМАТИЧЕСКИЙ МОЛОТ

FIELD: machine building. SUBSTANCE: invention relates to pneumatic hammer. Pneumatic hammer comprises working tool, housing, barrel with central bore, annular flange with central bore and throttle inlet channel, end precombustion chamber formed between the bucket and annular flange, hammer and rod tube. Hammer has axial hole and bypass channel and divides housing into working and idle strokes chambers. Rod tube is installed in annular flange central hole and passed through central hole in barrel. In rod tube radial discharge channel is made with its extension in form of axial longitudinal channel. Between barrel and cylindrical housing afterburning annular chamber is formed. Annular flange is equipped with side wall with made in it radial bypass channel, continuously communicating end forechamber with annular afterburning chamber. In working stroke chamber on annular flange side annular braking chamber and annular distributing chamber are made. In housing wall through bypass channels are made, continuously communicating it with annular afterburning chamber. Idle stroke chamber is communicated with annular distributing chamber and annular braking chamber, when hammer is resting on working tool shank. EFFECT: result is increase in hammer impact kinetic energy and reduced air consumption. 1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 603 525 C1 (51) МПК B25D 9/04 (2006.01) B25D 9/08 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2015124187/02, 22.06.2015 (24) Дата начала отсчета срока действия патента: 22.06.2015 (45) Опубликовано: 27.11.2016 Бюл. № 33 2 6 0 3 5 2 5 R U (54) ПНЕВМАТИЧЕСКИЙ МОЛОТ (57) Реферат: Изобретение относится к пневматическому молоту. Пневматический молот содержит рабочий инструмент, корпус, стакан с центральным отверстием, кольцевой фланец с центральным отверстием и дроссельным каналом впуска, торцевую предкамеру, образованную между стаканом и ...

ПНЕВМАТИЧЕСКИЙ УДАРНЫЙ МЕХАНИЗМ

FIELD: construction. SUBSTANCE: invention relates to construction, mining and engineering, in particular to pneumatic impact devices. Pneumatic impact mechanism, including a cylindrical body with discharge channels and a bushing installed therein, a step anvil with the rod and the main body, a through hole and a bushing in the rod part with a channel-groove separating the cavity of the body into the idling chamber from the shank side and the annular working one, an annular flange with channels for supplying air from the network chamber, a rod rigidly fixed with respect to the annular flange, constantly located in the through hole of the anvil and interacting with the channel-groove of the bushing, a tool with a shank, an annular distribution chamber communicating on one side with the network chamber by way of the air supply channels of the annular flange and on the other side to the annular working chamber by means of an annular channel formed by the bushing of the body and the rod part of the hammer, herewith the rod is arranged able for periodic communication, depending on the position of the stepped anvil, the annular distribution chamber and the idle chamber with each other. Annular channel is made in the form of either a channel-groove or a fluke channel inclined to the longitudinal axis of the stepped anvil, the inclined planes of which are made with a curvature not lower than of the second order, with increasing cross sections extending to the end of the rod part from the side of the annular distribution chamber and decreasing cross sections, which extend to the lateral surface of the rod part from the side of the annular chamber of the working stroke with the transition to the cylindrical surface of the rod part of the anvil with the possibility of overlapping its annular channel at the end of idling and the beginning of the working stroke of the anvil. EFFECT: air backpressure in the idling chamber and the annular chamber of the working stroke are reduced ...

Устройство для пневматического молота

FIELD: construction.SUBSTANCE: invention relates to the construction equipment, and can be used as the pneumatic hammer for destruction of the pit oversize materials, frozen soil, concrete foundations and pavement, etc., materials and structures. Device contains the throttle-valve type pneumatic impact mechanism, a working tool with a shank, a cylindrical body, a cup with the air from the mains supply channel, annular flange with a central hole and the inlet throttle channel, located in a cylindrical housing striker with a through axial hole and a bypass blind channel on the side surface and separating the of the cylindrical body cavity into the working and idling strokes chambers, mounted in the annular flange central hole a rod-tube, passed through the central hole in the cup and fixed relative to it. In the idle stroke chamber from the working tool shank side, the front annular bypass chamber and the rear annular bypass chamber are made in the form of notches, separated by the bead so that with the notches interaction with the blind channel bypass on the striker side surface, the annular deceleration chamber is connected to the annular accumulation chamber, and in the supported on the working tool shank striker position, the front annular bypass chamber and the rear annular bypass chamber communicate with the accumulation chamber and the annular deceleration chamber. Blind bypass channel on the striker side surface is made in the form of a blind bypass channel-groove or blind bypass channel with a varying longitudinal section and is formed by the curvilinear surface of the segment by the curvature facing in the striker axial through hole direction.EFFECT: increase in the efficiency, single blow and the air flow energy in the pneumatic hammer increase working process.1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 675 651 C1 (51) МПК E21C 37/24 (2006.01) B25D 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ...

Пневматический ударный механизм

Изобретение относится к строительству и горной промышленности, в частности, к пневматическим устройствам ударного действия. Ударный механизм содержит цилиндрический корпус с выпускными каналами, кольцевой фланец со сквозным центральным отверстием, рабочий инструмент с хвостовиком, ступенчатый ударник со штоковой частью, установленный в центральном отверстии кольцевого фланца стержень с поршневой частью, постоянно находящейся в сквозном осевом отверстии ступенчатого ударника, кольцевую камеру пневматического буфера, втулку цилиндрического корпуса с отверстием для пропуска штоковой части ступенчатого ударника и образующую со стороны кольцевой камеры пневматического буфера кольцевой перешеек, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха со стороны кольцевого фланца, камеру холостого хода со стороны хвостовика рабочего инструмента, удерживаемого пружиной относительно цилиндрического корпуса, на боковой поверхности поршневой части стержня выполнена наклонная канал-лыска с изменяющимся геометрическим сечением, увеличивающимся от боковой поверхности поршневой части со стороны стержня до окончания на поршневой части со стороны сквозного осевого отверстия ступенчатого ударника. На диаметрально противоположной стороне боковой поверхности поршневой части стержня выполнена дополнительная наклонная канал-лыска. Поверхности обоих каналов-лысок выполнены сходящимися под острым углом на торце поршневой части стержня с образованием изменяющегося поперечного сечения, уменьшающегося от полного диаметрального сечения поршневой части стержня до окончания на торцевой части, установленной в сквозном осевом отверстии ступенчатого ударника. Обеспечивается повышение энергии и частоты ударов, а также экономичности пневматического ударного механизма. 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 728 ...

Машина ударного действия

A percussive tool comprises a percussion mechanism and a pressure pulser. The percussion mechanism has a hollow housing with a piston hammer arranged thereinside to form two chambers of variable volume. The pressure pulser has a hollow housing and a fluid displacer defining inside the housing a working chamber adapted to alternately communicate with a source of gaseous fluid and the interior of the percussion mechanism. The fluid displacer is intended for forced displacement inside the housing to transmit to the chambers of the percussion mechanism a pulsed pressure of the gaseous fluid which causes the piston hammer to reciprocate. The interior of the percussion mechanism is isolated from the outside, whereas the working chamber of the pressure pulser communicates with at least one of the chambers of the percussion mechanism, the chambers of the percussion mechanism continuously intercommunicating by way of a restrictor passage.

Setzgerät für Befestigungsdübel

Tool device for handheld power tool i.e. hammer drill, has working body that is movable back and forth by application of force, and pressure control valve to control and/or regulate acceleration profile of working body

The device (10a) has a working body (12a) that is movable back and forth by application of force, and a pressure control valve (14a) to control and/or regulate an acceleration profile of the working body. A control and/or regulating unit (16a) is provided to control and/or regulate the pressure control valve. A switching valve (18a) is provided for a pressurization circuit of the working body, where the pressure control valve is arranged between a pressure source (20a) and the switching valve. The working body is firmly connected with a sliding valve (34a).

Power tool

Improvements in or relating to striking and hammering tools

... 297,412. Aktiebolaget Nordiska Armaturfabrikerna. Sept. 21, 1927, [Convention date]. Percussive tools.-In a percussive tool of the kind wherein a reciprocating striker 2 also acts to store energy on each rear stroke by compressing air in a closed chamber 15, the pressure in the said chamber is restored to atmospheric on each power stroke by admitting air through grooves 4 uncovered by the striker. The arrangement is applicable also to a tool using an exhaust chamber instead of a compression chamber, or both.

PNEUMATIC PERCUSSION TOOLS

Recoilless hammer

Recoilless hammer

HYDRAULIC MECHANICAL PICK

COMPRESSED AIR IMPACT DEVICE WITH VARIABLE CONTROL

STRIKING, PNEUMATIC TOOL HANDHELD

SEALING MECHANISMS FOR SCHLAGMASCHINEN BETWEEN HYDRAULIC AND AEUSSEREM MEDIUM.

COMPRESSED AIR RAMMER

PERCUSSION APPARATUS

HYDRAULIC FLUIDABTUATED PERCUSSION TOOL

PNEUMATIC IMPACT PIERCING TOOL

A reversible, pneumatic ground piercing tool has a tail assembly with exhaust passages therethrough. At least a potion of each exhaust passage angles radially inwardly and ends in discharge ports that communicate with a central hole at the rear end of the tail assembly, whereby exhaust escapes through the central hole. A tail cone has a radially inwardly extending flange on the inner periphery of the central hole, which flange is rearwardly spaced from and covers the discharge ports.

HYDRAULIC IMPACT HAMMER SYSTEMS AND METHODS

A hydraulic impact hammer for striking a pile has a main housing, a ram supported for movement within the main housing, a coupler rod detachably attached to the ram, a conversion housing detachably attached to the main housing, a hydraulic actuator supported by the conversion housing, the hydraulic actuator defining an actuator rod, a lifting head, a lift connector, and a ram connector. The lift connector is detachably attaches the actuator rod to the lifting head. The ram connector detachably attaches the coupler rod to the lifting head. Operation of the hydraulic actuator raises and lowers the ram to strike the pile.

A STRIKER MEMBER, AND A DRILLING MACHINE COMPRISING A STRIKER MEMBER

A circular cylindrical striker member 2 for a drilling machine adapted to transfer kinetic energy to an impulse receiving member 4. The striker member has a diameter dmax, and includes a side surface 12 and an impulse surface (6). The striker member is adapted to transfer the kinetic energy to the impulse receiving member by a ring shaped active surface of the impulse surface, wherein the ring shaped active surface is concentric with regard to the cross section of the striker member, has a diameter da, where da Подробнее

Hydraulisches Schlagwerkzeug

COMPRESSED AIR RAMMER.

Percussion tool for cleaning surfaces - has metal tube cylinder inside injected plastics muff

The tool has a tubular casing (1) with a bundle of metal cleaning rods (2) projecting from the front and the casing encloses an anvil (4) one face of which hits the rear of the rod. A free piston hammer (9) mounted in a cylinder is connected to a pneumatic supply and hits against the other anvil face. The cylinder (8) is fitted inside the muff (7) which is itself fitted in the casing to leave a chamber (13) adjacent to the cylinder external face and the chamber communicates with the cylinder interior via openings (12) traversing the lateral wall and with the source of air under pressure. USE - As a lightweight cleaning percussion tool not liable to overheat.

PERCUSSION DEVICE

DEVICE OF COMPRESSED-AIR POWER PICK

Dispositif de marteau piqueur à air comprimé (1) comprenant un carter externe (3), un ensemble cylindre et piston mobile actionnant un élément piqueur (9), un dispositif d'alimentation du cylindre en air comprimé, un dispositif d'échappement d'air et un dispositif de commande de fonctionnement, dans lequel ledit carter externe (3) est issu de deux parties complémentaires (3a) aptes à s'emboîter l'une à l'autre pour enfermer en plus de l'ensemble cylindre et piston lesdits dispositifs d'alimentation du cylindre, d'échappement d'air et de commande du fonctionnement.

PNEUMATIC UNIT OF PERCUSSION HAS WORK TOOLS REMOVABLE.

Pneumatic drill hammer comprising a boost chamber and a drilling rig comprising such a drill hammer

The invention relates to a pneumatically operated drill hammer (1), comprising a piston (3) and a distributor (5) axially arranged relative each other in a housing (7), the piston (3) being arranged to be moved axially between a first position and a second position. The drill hammer (1) further comprises a pneumatic drive system, comprising a drive chamber (11), a return chamber (13) and a plurality of channels (15) for distribution of drive gas in said drive system. The return chamber (13) is arranged at a lower side (17) of the piston (3) and the drive chamber (11) is arranged at an upper side (19) of the piston (3), wherein the drive chamber (11) is defined by a variable space enclosed by at least the housing (7), the piston (3) and the distributor (5). The drive chamber (11) comprises at least one inlet port (21) and at least one exhaust port (23) arranged at a circumference of the drive chamber (11), wherein pressurization of the pneumatic drive system alternates pressurization of ...

MED SLAG VERKANDE KOMPRESSIONS- OCH VAKUUMMASKIN

HYDRAULIC HAMMER HAVING IMPACT SYSTEM SUBASSEMBLY

An impact system (70) for a hydraulic hammer (20) is disclosed. The impact system includes a piston (80), a sleeve (100) disposed co¬ axial with the piston, and an accumulator membrane (90) disposed external to the sleeve. A first seal (137) is located at an end of the sleeve, and configured to connect the sleeve to the piston. The accumulator membrane has an extension (97) configured to engage a recess (109) in the sleeve.

PNEUMATIC IMPACT TOOL

A pneumatic impact tool includes a housing, an accumulation chamber, and a piston. The housing defines a longitudinal passageway with a rear end and a front end and a passageway gas port. The accumulation chamber has a accumulation chamber gas port connectable to a gas supply and a inner gas port in fluid communication with the longitudinal passageway. The piston is inserted in the longitudinal passageway and slides between a rest position wherein the piston is juxtaposed to the rear end of the longitudinal passageway and an impact position wherein the piston is juxtaposed to the front end of the longitudinal passageway. The piston moves from the rest position to the impact position when gas is inserted in the longitudinal passageway through the passageway gas port and is propelled therebetween by pressurized gas contained in the accumulation chamber.

Handheld drilling machine with compressed-air-operated percussion mechanism

The output shaft (15) carries a chuck and is axially moveable when impacted by the piston (30) which slides back and forth in the cylinder housing (22) according to the position of a shuttle (41), and bores (46-52) with pressure applied to an opening (24). Air is released through an opening (23). As the piston contacts the output shaft the shuttle is pushed back to reverse the air flow until the piston contacts a rear face (26), after which it again reverses the air flow.

ПНЕВМАТИЧЕСКИЙ МОЛОТ

Изобретение относится к пневматическим машинам ударного действия и может быть применено в строительстве, горном деле и машиностроении. Пневматический молот содержит устройство подачи сетевого воздуха, цилиндрический корпус, рабочий инструмент, удерживаемый фиксатором относительно цилиндрического корпуса, рукоять с корпусом и со впускным каналом, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным каналом, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, образованную корпусом рукояти и перегородкой и сообщенную посредством впускного канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющий полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки, постоянно сообщенную с предкамерой посредством ...

ПНЕВМАТИЧЕСКИЙ МОЛОТ

FIELD: pneumatic tools. SUBSTANCE: pneumatic hammer contains a cylindrical case, a working tool held relatively to the cylindrical case, a handle with a pre-chamber, an inlet device and a case with an outlet hole, a partition with an inlet throttle and an outlet channel, a tube with longitudinal and radial outlet channels on its side surface, and an annular outlet chamber formed by a partition, a cylindrical case and a handle case. A striker with a through axial channel for passing the said tube divides the cavity of the cylindrical case into a working stroke chamber on the side of the partition and an idle stroke chamber on the side of the working tool. In the wall of the annular part of the striker, a bypass channel is made with a separate output to its side surface and to the end of the striker from the side of the working stroke chamber. The bypass channel of the striker is provided with its coaxial continuation in the form of a drainage channel having a cross-sectional area less than the area of the bypass channel, and extending to the end of the striker from the side of the idle stroke chamber, with the formation by the said channels of a through-stepped bypass channel, which constantly communicates the said chambers of idle and working stroke with each other. EFFECT: decreased air backpressure in the chambers of the working and idle stroke during the end of the working and idle stroke of the striker. 1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 747 152 C1 (51) МПК B25D 9/04 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B25D 9/04 (2021.01); E21C 37/24 (2021.01) (21)(22) Заявка: 2020132844, 05.10.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 28.04.2021 (45) Опубликовано: 28.04.2021 Бюл. № 13 2 7 4 7 1 5 2 R U (54) ПНЕВМАТИЧЕСКИЙ МОЛОТ (57) Реферат: Изобретение относится к пневматическому молоту. Пневматический молот содержит цилиндрический корпус ...

Пневматический молот

Изобретение относится к пневматическому молоту. Молот содержит рабочий инструмент с хвостовиком, корпус, стакан с центральным отверстием и каналом подвода воздуха из сети, кольцевой фланец с центральным отверстием и дроссельным каналом впуска, торцевую предкамеру, образованную между стаканом и кольцевым фланцем, размещенный в корпусе ударник. Ударник имеет сквозное осевое отверстие и канал перепуска, выполненный на торце ударника со стороны кольцевого фланца и на боковой поверхности ударника и разделяющий полость корпуса на камеры рабочего и холостого ходов. Стержень-трубка установлена в центральном отверстии кольцевого фланца и пропущена через центральное отверстие в стакане. В камере холостого хода выполнена выточка, взаимодействующая с каналом перепуска ударника на его боковой поверхности. Канал перепуска выполнен с уменьшающимся геометрическим сечением в сторону камеры холостого хода. В результате увеличивается кинетическая энергия единичного удара. 1 ил.

Устройство для пневматического ударного механизма

FIELD: construction. SUBSTANCE: invention relates to the field of construction and mining, in particular, to pneumatic devices of percussive action. Device comprises a cylindrical housing with outlet channels, an annular flange with a through central hole, a cover with an inlet, a working tool with a shank, step striker with rod and piston parts, rod installed in central hole of annular flange with piston part with inclined channel-groove, constantly located in through axial hole of step striker, bushing of cylindrical housing with hole for passage of rod part of stepped striker, forming in bushing annular neck, limiting value of movement of step striker, barrel fixed to cylindrical housing with air supply channel, annular distribution chamber in cylindrical housing bushing, network air chamber between shell and cover, between the cover and the annular flange between the cover plate and the antechamber, and the idle stroke chamber on the side of the working tool shank retained by the spring relative to the cylindrical body. Channel-groove on rod piston part side surface features varying geometrical cross-section increasing from piston part side surface on rod side to the piston part end on the side of through axial bore of stepped hammer. Between ring part of stepped striker and cylindrical housing on the side of annular isthmus of sleeve there is an annular controlled chamber of working stroke. On stepped striker rod part side surface cylindrical annular channel-bypass of air bypass along generatrix of rod part of step striker is made and so that length of annular channel-groove of air bypass depending on position of stepped striker is sufficient for periodic air bypass when annular distribution chamber and annular controlled chamber of working stroke are interconnected. EFFECT: higher efficiency of using internal air energy of annular controlled chamber of working stroke, higher efficiency of pneumatic percussive mechanism operating process, reduction of negative ...

Гидромолот

Изобретение относится к горной и строительной промышленности, в частности к гидравлическим ударным механизмам, и предназначена для использования в качестве сменного оборудования к строительно-дорожным машинам (навесного экскаваторного оборудования) для разрушения прочных горных пород, дорожных покрытий, бетонных сооружений и тому подобных работ. Гидромолот содержит ударный механизм, буксу, в которой размещен рабочий инструмент. Рабочий инструмент в области буксы содержит вытянутое в продольном направлении рабочего инструмента отверстие со скруглениями по краям и выполнен прямоугольным в поперечном сечении, причем размер поперечного сечения в продольном направлении больше, чем в поперечном направлении, два фронтальных плоских вкладыша и два боковых плоских вкладыша, размещенные между буксой и рабочим инструментом, и фиксирующий палец, установленный в отверстиях на поперечной оси буксы и проходящий через указанное отверстие в рабочем инструменте в поперечном направлении его поперечного сечения ...

Пневматический молот

Изобретение относится к пневматическим машинам ударного действия и может быть применено в строительстве, горном деле и машиностроении. Пневматический молот содержит цилиндрический корпус, рабочий инструмент, удерживаемый фиксатором относительно цилиндрического корпуса, рукоять с устройством впуска, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным отверстием, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, образованную корпусом рукояти и перегородкой и сообщенную посредством воздухоподводящего канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющий полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки, постоянно сообщенную с предкамерой посредством впускного дросселя в перегородке ...

ГИДРАВЛИЧЕСКОЕ УДАРНОЕ УСТРОЙСТВО И ОСНАЩЕННАЯ ИМ СТРОИТЕЛЬНАЯ ТЕХНИКА

Настоящее изобретение относится к гидравлическому ударному устройству и оснащенной им строительной технике. Техническим результатом является обеспечение регулирования длины хода ударного устройства в соответствии с состоянием дробления. Ударное устройство содержит: цилиндр для размещения поршня; поршень для возвратно-поступательного движения в цилиндре; отверстие обратного хода для соединения передней камеры, расположенной на передней стороне цилиндра, с гидравлическим источником; отверстие прямого хода, образованное в задней камере, расположенной на задней стороне цилиндра; клапан прямого и обратного хода для управления движением поршня; трубопровод управления для перемещения клапана прямого и обратного хода при подключении к гидравлическому источнику; отверстие длинного хода для соединения гидравлического источника с трубопроводом управления через переднюю камеру, когда поршень перемещается назад в первое положение; отверстие короткого хода, соединенное с гидравлическим источником через ...

УДАРНОЕ УСТРОЙСТВО

... 1. Способ управления работой ударного устройства (1), приводимого в действие текучей средой под давлением, содержащего: средства для подачи текучей среды под давлением в ударное устройство и выпуска из него; средства для создания волны напряжения посредством давления текучей среды под давлением на инструмент (3), соединяемый с ударным устройством (1) с возможностью перемещения в продольном направлении относительно корпуса (2) ударного устройства (1), причем средства для создания волны напряжения содержат рабочую камеру (4) в корпусе (2) ударного устройства (1) и предусмотренный в рабочей камере (4) передаточный поршень (5) для перемещения в продольном направлении инструмента относительно корпуса (2) ударного устройства, при этом передаточный поршень имеет передающую энергию поверхность (5b), обращенную к инструменту (3), чтобы обеспечить возможность ее контакта с воспринимающей энергию поверхностью (3а) инструмента (3) или хвостовика, соединенного с инструментом; средства для толкания давлением ...

Устройство для пневмоударного механизма

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 111 322 A (51) МПК E21C 37/24 (2006.01) B25D 9/14 (2006.01) B25D 9/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019111322, 15.04.2019 Приоритет(ы): (22) Дата подачи заявки: 15.04.2019 (43) Дата публикации заявки: 15.10.2020 Бюл. № 29 R U (57) Формула изобретения Устройство для пневмоударного механизма, содержащее цилиндрический корпус с выпускными каналами, кольцевой фланец со сквозным центральным отверстием, крышки с впускным отверстием, рабочий инструмент с хвостовиком, ступенчатый ударник со штоковой и поршневой частями, установленными в центральном отверстии кольцевого фланца стержень с поршневой частью с наклонным каналом-пазом, постоянно находящимся в сквозном осевом отверстии ступенчатого ударника, втулку цилиндрического корпуса с отверстием для пропуска штоковой части ступенчатого ударника и образующим во втулке кольцевой перешеек, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха в крышке со стороны кольцевого фланца, камеру-ресивер между стаканом и крышкой, камеру холостого хода со стороны хвостовика рабочего инструмента, удерживаемого пружиной относительно цилиндрического корпуса, причем канал-паз на боковой поверхности поршневой части стержня выполнен с изменяющимся геометрическим сечением, увеличивающимся от боковой поверхности поршневой части со стороны стержня до окончания его поршневой части его стороны сквозного осевого отверстия ступенчатого ударника, отличающееся тем, что между штоковой частью ступенчатого ударника и цилиндрическим корпусом со стороны кольцевого перешейка втулки образована кольцевая управляемая камера рабочего хода, а на боковой поверхности штоковой части ступенчатого ударника выполнен кольцевой канал-выточка перепуска воздуха в виде ...

Устройство для пневматического ударного механизма с дроссельным воздухораспределением

Пневматический молот

Изобретение относится к области строительства, а именно к пневматическим машинам ударного действия. Пневматический молот содержит цилиндрический корпус, рабочий инструмент, удерживаемый фиксатором относительно цилиндрического корпуса, рукоять с устройством впуска воздуха, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором закреплена трубка с продольным выпускным каналом, боковым каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным каналом, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, имеющую возможность сообщения посредством впускного канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющий полость цилиндрического корпуса на расположенную со стороны перегородки камеру рабочего хода, имеющую возможность постоянного сообщения с предкамерой посредством впускного дросселя в перегородке, и камеру холостого хода ...

Polishing composition and polishing method

SETTING EQUIPMENT FOR ATTACHMENT PEGS

STRIKING, PNEUMATIC TOOL HANDHELD

HYDRAULIC PERCUSSIVE TOOL

IM-LOCH IMPACT DRILLING HAMMER AND THEREIN USED PISTON

PNEUMATIC PERCUSSION TOOL

A mechanism for driving rod-shaped elements into compact or frozen ground comprises a guide tube to accommodate said rod-shaped element, said tube extending throughout the length of the shell and being secured in the extension and the front portion of said shell, coaxially with the stepped ram and the shell. The outer surface of said guide tube contacts the inner surface of the axial hole in the stepped ram and has at least one channel which puts the rear and front working chambers in communication with each other when the stepped ram is in the foremost position, while the front portion of the shell is provided with a rigidly secured clamp for holding the rodshaped element.

RECOILLESS HAMMER

A recoilless hammer comprising a moil supported for reciprocal movement along a hammer axis of a housing, a piston moveable within the chamber of an elongate tube extending from the rear of the housing such that it may strike the moil. In a rest position the piston is held forward against the moil by a low pressure air supply delivered from the aft end of the chamber, and the piston is retracted to a charged position at the aft end of the chamber by delivery of high pressure air to act on the fore portion of the piston. Upon actuation of a trigger mechanism, air is vented from the fore end of the chamber to atmosphere causing a pressure unbalance of low magnitude across the piston, such that it accelerates towards and strikes the moil. The chamber is of a length to enable a high energy blow with minimal piston acceleration recoil when the hammer is manually held and operated.

JACKHAMMER WITH A LIFT ASSIST

The present invention relates to an integrated percussion power tool which contains a percussion mechanism (2) and a lift assist mechanism (3) to reduce the physical demands for its operation by facilitating the lifting and extracting of the percussion power tool. In general, the integrated percussion power tool is a T-shaped machine which has a vertical cylindrical body (10) with two handles (11), two hand control levers (12, 13) cross the top, and a working tool (14) and a lifting foot (15) on the bottom for engaging with a working surface. The first hand lever is for controlling the operation of the percussion mechanism, whereas the second hand lever is for manipulating the operation of the lift assist mechanism. The percussion mechanism and the lift assist mechanism are both used in the vertical cylindrical body of the integrated percussion power tool.

A STRIKER MEMBER, AND A DRILLING MACHINE COMPRISING A STRIKER MEMBER

A circular cylindrical striker member 2 for a drilling machine adapted to transfer kinetic energy to an impulse receiving member 4. The striker member has a diameter dmax, and includes a side surface 12 and an impulse surface (6). The striker member is adapted to transfer the kinetic energy to the impulse receiving member by a ring shaped active surface of the impulse surface, wherein the ring shaped active surface is concentric with regard to the cross section of the striker member, has a diameter da, where da Подробнее

DEVICE AND METHOD FOR ROCK- AND CONCRETE MACHINING

The invention concerns a hydraulic, valveless impact mechanism for use in equipment for the machining of at least one of rock and concrete comprising a machine housing (105; 205) with a cylinder bore, a piston (110; 210) mounted such that it moves within this bore arranged to carry out when in operation repetitive reciprocating motion relative to the machine housing and in this way to deliver impact directly or indirectly on a tool connectable to the equipment for machining at least one of rock and concrete, and where the piston includes a driving part (140; 240) that separates a first drive chamber (160; 260) and a second drive chamber (125; 225), with an effective volume that is greater than that of the first drive chamber. The impact mechanism comprises further a starting means arranged such that it creates for a short duration, during an initial pressurisation of the impact mechanism, a connection between the second drive chamber and the first drive chamber, where the said connection ...

With impact system sub-assembly of the hammer

PNEUMATIC MECHANISM HAS PERCUSSION

DEVICE COMPRESSED-AIR STITCHER HAS VARIABLE ORDER.

La présente invention concerne dispositif piqueur (1) à air comprimé et à commande variable comportant un ensemble cylindre et piston (5) d'actionnement d'un élément piqueur (7), et une partie de distribution (9) à commande variable (23, 25) de l'air comprimé audit ensemble cylindre et piston (5), la partie de distribution comportant un corps supérieur (15), une bague inférieure (17) et un tiroir mobile (19) de distribution de fluide monté coulissant entre le corps (15) et la bague (17), dans lequel la partie de distribution est logée dans le cylindre (13) de l'ensemble cylindre et piston (5), à sa partie supérieure (33) et coaxialement à celui-ci, et ladite partie supérieure (33) du cylindre (13) comporte au moins un canal (37, 39) d'acheminement de l'air comprimé à ladite partie de distribution (9).

MECANISME PNEUMATIQUE A PERCUSSION

La présente invention concerne le matériel utilisé pour la construction des bâtiments et les travaux publics. Le mécanisme comprend un corps cylindrique creux 1 abritant un percuteur à gradins 3 à mouvement axial alternatif ininterrompu. Les gradins du percuteur 3 forment, avec le corps 1, des chambres de travail arrière et avant 4, 5 de volume variable qui communiquent avec une source d'air comprimé et l'air libre. Sur toute la longueur du corps 1, est fixé un tube de guidage 6 abritant une pièce en forme de tige 13 qu'il faut enfoncer. Un canal 7 assure la communication entre la chambre de travail arrière 4 et la chambre de travail avant 5 pour la position avant du percuteur. A la partie avant du corps 1, est rigidement fixé un serre-pièce 12. L'invention s'applique avantageusement à l'enfoncement d'électrodes de mise de terre et d'ancres, pièces en forme de tiges dont la dimension transversale est incommensurablement petite par rapport à la longueur.

Percussion machine

Low-noise hydraulic hammer

The present invention relates to a hydraulic hammer, and more specifically, to a low-noise hydraulic hammer, wherein an impact bar that is accommodated inside of a piston is inclined so as not to contact the inside of the piston thereby preventing cracks, and a noise insulating material or a heat sink is installed inside the piston or outside the impact bar, thereby reducing noise and improving heat radiation performance.

Pneumatic hammer drill (I)

A pneumatic hammer drill includes: a pneumatic cylinder having a cylinder rear end fitted in a handle body, an air passage, and a pressure chamber; and an air valve adjacent to the cylinder rear end. The air valve has a front bearing end, a valve orifice interconnecting fluidly the air passage and the pressure chamber, and an opening disposed at the front bearing end in communication with the valve orifice. A piston is disposed slidably in the pressure chamber, and has a piston rear end capable of moving towards or away from the front bearing end. An air trap arrangement is associated with the piston rear end and the front bearing end to trap air between the same and around the opening so as to provide a shock-absorbing air cushion when the piston rear end moves towards the front bearing end.

Гидравлический механизм ударного действия

Изобретение относится к гидравлическим механизмам ударного действия, которые могут быть использованы в машинах для разработки скальных пород и мерзлых грунтов в горной и строительной промышленности. Гидравлический механизм ударного действия содержит корпус, аккумулятор энергии, взводящую камеру, боек с поршнем и ступенчатый клапан. Ступенчатый клапан выполнен с торцовой полостью, выполненной с возможностью входа в нее поршня бойка. Ступенчатый клапан образует с корпусом переливную камеру. Переливная камера периодически сообщается со сливной магистралью и постоянно сообщается с торцовой полостью клапана. С целью упрощения конструкции механизма, снижения трудоемкости его изготовления и пульсации давления рабочей жидкости в напорной магистрали, величина входа поршня бойка в торцовую полость клапана определяется формулой Х= В * Н/Г (см), где X - величина входа поршня бойка в торцовую полость клапана (см); Н - величина перекрытия сливной магистрали наружной поверхностью клапана для обеспечения ...

Пневматический механизм ударного действия

FIELD: construction.SUBSTANCE: invention relates to the field of construction equipment and can be used as a pneumatic hammer for destruction of quarry lumps, frozen soil, concrete foundations, road pavement, and so forth of materials and structures. Pneumatic mechanism of impact action comprises housing with cylindrical cavity, working tool with shank, sleeve with central hole and throttling inlet channel, end prechamber of network air formed between shell and annular flange, arranged in cylindrical housing striker, having a through axial opening and a channel-bypass groove at the hammer end on the side of the annular flange and on the hammer side surface and dividing the cylindrical housing cavity into the working and idle travel chambers, rod-tube installed in the central hole of the ring flange and passed through the central hole in the barrel. In the idle stroke chamber there is a recess interacting with the hammer channel-bypass groove. In rod-tube it is made with possibility to open end of striker from side of working tool shank radial channel of outlet with its continuation in the form of axial longitudinal channel, leaving into atmosphere. Annular afterburning chamber is formed between shell and housing. Annular flange is equipped with side wall with radial channel of bypass made therein for constant communication of end prechamber of network air with annular afterburning chamber. In the working stroke chamber on the side of the annular flange there is an annular braking chamber and an annular distribution chamber in the form of annular grooves separated by a collar. In the housing wall at the level of the annular distribution chamber and the annular braking chamber there are through radial bypass channels for constant connection with the annular afterburner chamber. Idle stroke chamber is communicated with the annular distributing chamber and the annular braking chamber in the striker position resting on the working tool shank. Channel-bypass groove on the ...

ПНЕВМАТИЧЕСКИЙ МОЛОТ

Изобретение относится к пневматическому молоту. Молот содержит пневмоударный механизм, корпус с цилиндрической полостью, рабочий инструмент с хвостовиком, стакан с центральным отверстием, закрепленный разъемно относительно корпуса, кольцевой фланец с центральным отверстием, торцевую предкамеру сетевого воздуха, образованную между стаканом и кольцевым фланцем, стержень-трубку и размещенный в цилиндрической полости корпуса ударник, имеющий сквозное осевое отверстие и канал-паз перепуска. Ударник разделяет полость цилиндрического корпуса на камеры рабочего и холостого ходов. Стержень-трубка установлена в центральном отверстии кольцевого фланца и пропущена через центральное отверстие в стакане. Между стаканом и цилиндрическим корпусом образована кольцевая камера форсажа. Канал-паз перепуска ударника выполнен в виде сквозного винтового канал-паза трапецеидальной формы с выходом на оба торца ударника и с уменьшающейся по его глубине площадью поперечного сечения к торцу ударника со стороны камеры холостого хода. В результате обеспечивается устойчивый режим работы молота с повышенной энергией удара и сниженным расходом воздуха. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 727 486 C1 (51) МПК B25D 9/04 (2006.01) B25D 9/26 (2006.01) B25D 17/02 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B25D 9/04 (2020.02) (21)(22) Заявка: 2019119645, 24.06.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 21.07.2020 (45) Опубликовано: 21.07.2020 Бюл. № 21 2 7 2 7 4 8 6 R U (56) Список документов, цитированных в отчете о поиске: RU 2603525 C1, 27.11.2016. RU 2259477 C2, 27.08.2005. RU 2612889 C2, 13.03.2017. DE 546489 C, 14.03.1932. (54) ПНЕВМАТИЧЕСКИЙ МОЛОТ (57) Реферат: Изобретение относится к пневматическому молоту. Молот содержит пневмоударный механизм, корпус с цилиндрической полостью, рабочий инструмент с хвостовиком, стакан с центральным отверстием, закрепленный разъемно ...

Пневматический ударный механизм

Изобретение относится к строительству и горной промышленности, в частности к пневматическим устройствам ударного действия. Пневматический ударный механизм содержит цилиндрический корпус с выпускными каналами, кольцевой фланец со сквозным центральным отверстием, рабочий инструмент с хвостовиком, ступенчатый ударник со штоковой частью, установленный в центральном отверстии кольцевого фланца стержень с поршневой частью с винтовым каналом-пазом, постоянно находящейся в сквозном осевом отверстии ступенчатого ударника, кольцевую камеру пневматического буфера, втулку цилиндрического корпуса с отверстием для пропуска штоковой части, образующую со стороны кольцевой камеры пневматического буфера кольцевой перешеек, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха со стороны кольцевого фланца с каналами перепуска сообщающими постоянно ее с распределительной камерой, камеру холостого хода со стороны хвостовика рабочего инструмента, удерживаемого пружиной относительно цилиндрического корпуса. Наружная боковая поверхность штоковой части ступенчатого ударника и внутренняя боковая поверхность втулки цилиндрического корпуса выполнены с взаимно соответствующими коническими поверхностями с минимально возможным зазором, исключающим взаимное заклинивание, а между цилиндрическим корпусом и втулкой выполнены распределительные каналы. Обеспечивается увеличение энергии единичного удара и частоты ударов, снижение расхода воздуха. 1 з.п. ф-лы, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 655 515 C1 (51) МПК E21C 37/22 (2006.01) E21B 4/14 (2006.01) E21B 1/30 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21C 37/22 (2018.02); E21B 4/06 (2018.02); E21B 11/00 (2018.02); B25D 9/04 (2018.02) (21)(22) Заявка: 2017116404, 10.05. ...

ПНЕВМАТИЧЕСКИЙ МОЛОТ

Изобретение относится к строительной технике и может быть использовано в качестве пневматического молота для разрушения каменных карьерных негабаритов, мерзлого грунта, бетонных фундаментов, дорожных покрытий и т.п. материалов и конструкций. Пневматический молот включает пневмоударный механизм дроссельно-клапанного типа. Содержит рабочий инструмент с хвостовиком, цилиндрический корпус, стакан с каналом подвода воздуха из сети, закрепленный разъемно относительно корпуса, кольцевой фланец с центральным отверстием и дроссельным каналом впуска, торцевую предкамеру, образованную между стаканом и кольцевым фланцем, размещенный в корпусе ударник со сквозным осевым отверстием и перепускным каналом на боковой поверхности и разделяющий полость корпуса на камеры рабочего и холостого ходов, установленную в центральном отверстии кольцевого фланца стержень-трубку, пропущенную через центральное отверстие в стакане и закрепленную относительно него, выточку в камере холостого хода, взаимодействующую с перепускным ...

Пневматический молот

Изобретение относится к пневматическим машинам ударного действия и может быть применено в строительстве, горном деле и машиностроении. Пневматический молот содержит цилиндрический корпус, рабочий инструмент, удерживаемый фиксатором относительно цилиндрического корпуса, рукоять с устройством впуска, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим из ее боковой поверхности, кольцевую выпускную камеру с выпускным каналом, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, имеющую возможность сообщения посредством впускного канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющий полость цилиндрического корпуса на расположенную со стороны перегородки камеру рабочего хода, имеющую возможность постоянного сообщения с предкамерой посредством впускного дросселя в перегородке ...

Пневматический молоток

Изобретение относится к пневматическому молотку. Молоток содержит ударник, цилиндрический корпус, рабочий инструмент, рукоять с устройством впуска, перегородку с впускным дросселем, выпускным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим в ее боковой поверхности, кольцевую выпускную камеру с выпускным отверстием, предкамеру, образованную упомянутыми корпусом рукояти и перегородкой, сообщенную воздухоподводящим каналом с сетью сжатого воздуха. Ударник выполнен со сквозным осевым каналом для пропуска трубки, разделяет полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки и камеру холостого хода со стороны рабочего инструмента. Цилиндрический корпус снабжен перепускным винтовым каналом-пазом с постоянно открытыми выходами в камеру холостого хода и камеру рабочего хода. Перепускной винтовой канал-паз выполнен на боковой поверхности внутренней полости цилиндрического корпуса ...

ПНЕВМАТИЧЕСКИЙ МОЛОТ

Изобретение относится к пневматическим машинам ударного действия и может быть применено в строительстве, в горном деле и машиностроении. Пневматический молот содержит цилиндрический корпус, рабочий инструмент с хвостовиком, удерживаемый относительно цилиндрического корпуса, рукоять с впускным каналом, перегородку с впускным дроссельным каналом и осевым отверстием, в котором установлена и закреплена трубка с продольным выпускным каналом и радиальным выпускным каналом, выходящим на ее боковой поверхности, кольцевую выпускную камеру с выпускным каналом, образованную перегородкой, цилиндрическим корпусом и корпусом рукояти, предкамеру, образованную корпусом рукояти и перегородкой и сообщенную посредством впускного канала с сетью сжатого воздуха, ударник со сквозным осевым каналом для пропуска упомянутой трубки, разделяющей полость цилиндрического корпуса на камеру рабочего хода со стороны перегородки, постоянно сообщенную с предкамерой посредством впускного дроссельного канала в перегородке ...

ДЕСТРУКТИВНЫЙ ГИДРОМОЛОТ

1. Деструктивный гидромолот, имеющий монолитный несущий цилиндрический корпус, содержащий цилиндрические поршневой шток, подвижный ударник и рабочий инструмент, приводимые в действие впуском и выпуском напорной рабочей жидкостью, отличающийся тем, что в части несущего корпуса (1) находится неподвижно расположенный поршневой шток (2) с поршнем (21), на который установлено подвижное клапанное кольцо - клапанная кольцевая втулка (23), укороченный и в осевом направлении жесткий ударник (3), введенный во втулку (24) ударника, поршень (25) мультипликатора, причем в другой части несущего корпуса находятся рабочий инструмент (4), свободно выставленный во втулку (27) инструмента, защищенную с внешней стороны посредством уплотнительной крышки (29), при этом таким размещением между несущим корпусом, поршнем мультипликатора и ударником образована газовая камера (45), между поршневым штоком и поршнем мультипликатора образован цилиндр (43) мультипликатора и компенсационная камера (44), а между газовой камерой и компенсационной камерой образован соединяющий канал (26). ! 2. Деструктивный гидромолот по п.1, отличающийся тем, что цилиндрический корпус ударника имеет выполненное по оси внутреннее заглубление диаметром, соответствующим диаметру поршневого штока, при этом выставленный в заглублении поршневой шток образует замкнутую полость, разделенную поршнем на первую камеру (41) и вторую камеру (42), причем поршневой шток в полости первой камеры имеет на поверхности сплошной участок ограниченной длины с уменьшенным диаметром, на котором выставленная клапанная кольцевая втулка, имеющая протяженность большую, чем участок длины поршневого што РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 103 146 (13) A (51) МПК B25D 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2010103146/02, 08.07.2008 (71) Заявитель(и): КОНЕК с.р.о. (SK) Приоритет(ы): (30) Конвенционный приоритет: 09.07.2007 SK PP 93-2007 (72) ...

ПНЕВМАТИЧЕСКИЙ УДАРНЫЙ МЕХАНИЗМ

А 2016123560 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ха сд сз в о ” ВУ °? 2046 123 560? А (51) МПК ЕС 37/22 (2006.01) В25р 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016123560, 14.06.2016 (71) Заявитель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский Приоритет(ы): (22) Дата подачи заявки: 14.06.2016 (43) Дата публикации заявки: 19.12.2017 Бюл. № 35 государственный архитектурно-строительный университет Адрес для переписки: (Сибстрин) (ВО) 630008, Новосибирск, ул. Ленинградская, 113, НГАСУ (Сибстрин), отдел ПЛР (72) Автор(ы: Абраменков Эдуард Александрович (КО), Дедов Алексей Сергеевич (КО), Дубровский Алексей Иванович (КО), Степанов Айсен Влиандрович (КО), Дмитриев Михаил Петрович (КО), Евсейко Алина Александровна (КО) (54) ПНЕВМАТИЧЕСКИЙ УДАРНЫЙ МЕХАНИЗМ (57) Формула изобретения 1. Пневматический ударный механизм, включающий цилиндрический корпус с выпускными каналами, кольцевой фланец со сквозным центральным отверстием, рабочий инструмент с хвостовиком, ступенчатый ударник со штоковой частью, установленный в центральном отверстии кольцевого фланца стержень с поршневой частью с каналами-пазами, постоянно находящийся в сквозном осевом отверстии ступенчатого ударника, кольцевую камеру рабочего хода между внутренней поверхностью цилиндрического корпуса и штоковой частью ударника, кольцевой перешеек, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха со стороны кольцевого фланца, камеру холостого хода со стороны хвостовика рабочего инструмента, удерживаемого пружиной относительно цилиндрического корпуса, отличающийся тем, что на штоковой части ступенчатого ударника наклонно к его продольной оси выполнен с кривизной не ниже второго порядка канал-паз с изменяющимся поперечным ...

УДАРНОЕ УСТРОЙСТВО С ПЕРЕДАТОЧНЫМ ЭЛЕМЕНТОМ, СЖИМАЮЩИМ УПРУГИЙ НАКАПЛИВАЮЩИЙ ЭНЕРГИЮ МАТЕРИАЛ

... 1. Ударное устройство, имеющее средства для создания импульса напряжения в инструменте, соединенном с ударным устройством, причем средства для обеспечения импульса напряжения включают в себя пространство накопления энергии, которое расположено в корпусе ударного устройства и ограничено корпусом ударного устройства, и отдельный передаточный элемент, размещенный с возможностью перемещения в аксиальном направлении инструмента относительно корпуса ударного устройства, причем пространство накопления энергии заполнено упругим и обратимым сжимаемым накапливающим энергию материалом, средства для перевода накапливающего энергию материала в напряженное состояние путем повышения давления, так что, когда накапливающий энергию материал находится в заданном напряженном состоянии, передаточный элемент находится в некотором положении относительно корпуса ударного устройства, при этом он может перемещаться из указанного положения относительно корпуса ударного устройства к инструменту, и соответственно средства ...

Polierzusammensetzung und Polierverfahren

Eine Polierzusammensetzung enthält Kolloidsilica. Das Kolloidsilica hat einen solchen Teilchendurchmesser, dass das Verhältnis der Ungleichung: D¶SA¶ D¶N4¶ zwischen einem durchschnittlichen primären Teilchendurchmesser D¶SA¶ des Kolloidsilica, berechnet basierend auf einer BET-Methode, und einem durchschnittlichen sekundären Teilchendurchmesser D¶N4¶ des Kolloidsilica, gemessen anhand einer Laserbeugungsmethode, erfüllt wird. Das Kolloidsilica hat den durchschnittlichen sekundären Teilchendurchmesser D¶N4¶ von 30 nm oder kleiner. Die Polierzusammensetzung kann die erhebliche Abnahme einer Polierrate aufgrund des Verstopfens in einem Polierkissen verhindern. A polishing composition contains colloidal silica. The colloidal silica has a particle diameter such that the ratio of the inequality: D¶SA¶ D¶N4¶ between an average primary particle diameter D¶SA¶ of the colloidal silica, calculated based on a BET method, and an average secondary particle diameter D¶N4¶ of colloidal silica, measured by a laser diffraction method. The colloidal silica has the average secondary particle diameter D¶N4¶ of 30 nm or smaller. The polishing composition can prevent the significant decrease in a polishing rate due to clogging in a polishing pad.

Hand machine tool, particularly chipping hammer or drill hammer, has drive unit, which is provided to drive insertion tool in operating state, percussion device and rotational valve to control operating state of percussion device

The hand machine tool has a drive unit (10a), which is provided to drive an insertion tool (12a) in an operating state, a percussion device (14a) and a rotational valve (16a) to control an operating state of the percussion device. A motor (18a) is provided to drive the rotational valve. The motor and the drive unit are separated from each other. A gear unit (20a) is provided to couple the motor and the rotational valve in an action-oriented manner.

PERCUSSION MECHANISM

... 1315948 Percussive apparatus INSTITUT GORNOGO DELA SIBIRSKOGO OTDELENIA AKADEMII NAUK SSSR 23 April 1971 11210/71 Heading B4C A "recoilless" percussive apparatus comprises a hammer piston 2 reciprocable in a housing 1 open at one end 14, and a tool 3 slidably received in the housing at the other end. With the piston 2 in the illustrated position fluid, e.g. compressed air, passes via ports 10 and 11 to chamber 4 to move the piston on its return stroke. On the return stroke, firstly the port 10 is closed by the piston, secondly the chamber 4 is vented via exhaust port 13 and thirdly the port 9 is opened by the piston so that fluid can be supplied to the nozzle 7 to terminate the return stroke and initiate the working stroke of the piston.

Compressed-air-driven chisel

Polishing composition and polishing method

IMPACT EQUIPMENT.

COMPRESSED AIR RAMMER

CONCRETE AND ROCK BREAKING, TOOL

A striker member, and a drilling machine comprising a striker member

A circular cylindrical striker member 2 for a drilling machine adapted to transfer kinetic energy to an impulse receiving member 4. The striker member has a diameter d ...

Backhead assembly for DTH hammer

A backhead assembly system for a Down The Hole (DTH) hammer operated by a supply of compressed fluid, that comprises mainly a backhead, said backhead having a central hole capable of transporting the pressurized air to the hammer and an inner cylinder, coaxially disposed and coupled with releasable holding mediums to the backhead, were said backhead has an interior frontal cavity and said releasable holding mediums are in the mentioned frontal cavity. The hammer also comprises a wear sleeve, coaxially disposed to the backhead and inner cylinder, in which the backhead is coupled to the rear side of the wear sleeve. In both embodiments of the present invention, the inner sleeve has a rear section of less diameter and a front side of larger diameter; both sections joined through a portion of generally increasing diameter.

PERCUSSION DEVICE

... ²²²The invention relates to a method for controlling the operation of a pressure ²fluid operated percussion device and to a pressure fluid operated percussion ²device. The method comprises influencing the shape of a stress wave by set- ²ting a suitable clearance between a transmission piston (5) and a tool (3). ²The percussion device is provided with means for setting the clearance between ²the transmission piston (5) and the tool (3).² ...

ANCHOR FIXING APPARATUS

The indirect-firing apparatus includes a combustion chamber for a cartridge (62), a trigger for igniting the cartridge, barrel, an inertia block in the barrel, an anchor guide (7) designed to receive an anchor, a shuttle (34) in the anchor guide (7) mounted for movement from an anchor loading position to a position for firing and driving of the anchor, means (63, 11 46) for displacement of the shuttle from one position to the other, and a barrel holder (61) for controlling concomitantly the closure of the combustion chamber (3) and means for displacement of the shuttle (34). he means (63, 11, 46) for displacement of the shuttle (34) are arranged so as to drive the shuttle (34) beyond the firing position (25). Damping means (32, 38), when the shuttle (34) has reached its firing position (25), absorb the action of its displacement means (63, 11 46).

Hydraulic valve impact mechanism, release valve, rock drill, rock drilling machine and method

本发明涉及一种用在用于加工岩石和混凝土中的至少一者的设备中的液压无阀冲击机构，其包括具有缸膛的机器壳体（105；205）和安装成在缸膛中运动的活塞（110；210），活塞（110；210）设置成当在操作中时执行相对于机器壳体的重复的往复运动，并且由此将冲击直接或间接地传输到能够连接至用于加工岩石和混凝土中的至少一者的设备的工具上，其中活塞包括将第一驱动腔（160；260）和第二驱动腔（125；225）分隔开的驱动部（140；240），第二驱动腔（125；225）具有大于第一驱动腔的有效容体积的有效容积。冲击机构还包括起动装置，起动装置布置成使其在冲击机构的初始增压过程中，在短的持续时间内产生第二驱动腔与第一驱动腔之间的连接，所述连接能够在一个完整冲程循环过程中保持，以便由此将活塞设定成自振动以及避免活塞在平衡位置保持静止。另外，本发明涉及具有该冲击机构的凿岩机和包括该凿岩机的凿岩钻机，以及用于无阀液压冲击机构的起动的液压释放阀。另外，本发明还涉及用于液压无阀冲击机构的起动方法。

TOOL HAS PERCUSSION FOR MINES AND CAREERS

MACHINE PORTABLE TOOL

PNEUMATIC IMPACT TOOL

Proportional pilot-controlled pneumatic control system for pneumatically powered hand-held tools

A control system for use in conjunction with a primary power system and operable to control a pneumatically powered hand-held tool broadly comprises an air delivery assembly operable to communicate with a pressurized air source; a control assembly including an exhaust line from the primary power system and to the control assembly, a spool valve in fluid communication with the supply line and the exhaust line, and a control line in fluid communication with the spool valve and the hand-held tool; a tool assembly comprising the hand-held tool for performing delicate hand working operations; and a housing for at least partial storage of the air delivery assembly and the control assembly. The primary power system and the control system operate in conjunction with each other to both power and precisely control a pneumatically powered hand-held tool.

AIR HAMMER TOOL, AND METHOD OF ADJUSTING IMPACT FORCE OF THE AIR HAMMER TOOL

[Problem to be Solved] To provide an air hammer tool which largely reduces transmission of vibration to a worker, has a simple and light-weight structure, can he manufactured at a low cost, and can be easily maintained. 1. An air hammer tool , comprising:a cover body and a tip tool which is extended forward from the cover body; andan impact force obtained by a gas, which is pressured and injected into said cover body, being applied to an object to be impacted through said tip tool,wherein said cover body has an inner space portion which is formed along the longitudinal direction, a gas pressure-injection portion which is formed in the peripheral wall of the cover body to a gas pressured and injected, forward into the inner space portion, the inner space portion has therein a longitudinally slidable sliding body and an elastic body which is interposed between the outer peripheral surface of the sliding body and the inner peripheral surface of the cover body,said sliding body has a. sliding body main body and a cylinder portion which has a cylindrical shape and is disposed at a front end portion of the sliding body main body to protrude forward from said cover body,a gas introduction portion for guiding the gas pressured and injected, into said cover body into the cylinder portion and a gas introduction portion is formed in a peripheral wall of the cylinder portion, a hammer is longitudinally slidably loaded in the cylinder portion, a rear end portion of said tip tool is fixed to a front-end opening portion of the cylinder portion to be impactable with said hammer,when the gas is pressured and injected into said cover body through said gas pressure-injection portion, said sliding body is moved forward in the cover body by the pressure of the gas while elastically deforming the elastic body, and the hammer is longitudinally reciprocated within the cylinder portion by the gas introduced into said cylinder portion through said gas introduction portion ,and said hammer ...

DEMOLITION HAMMER ARRANGEMENT FOR A REMOTE-CONTROLLED WORKING MACHINE EQUIPPED WITH A MANOEUVRABLE ARM

The invention concerns a demolition arrangement for a remote-controlled working machine () equipped with a manoeuvrable arm (), which machine, electrically powered and able to be driven on tracks (), is principally intended for destruction and demolition work through the demolition processing with an impact tool () that operates through a hydraulically powered hammer () and where an operator walking next to the machine controls its various movements with a remote-control unit (), which machine has a chassis () with an upper part () that is mounted in bearings on a lower part () in a manner that allows rotation for the rotation of the upper part in a horizontal plane around a vertical axis (), whereby the manoeuvrable arm is supported at the upper part and including a series of arm parts () mutually joined to each other and that can be manoeuvred in a vertical plane by associated hydraulic cylinders (), a link system () arranged at the free end of the arm that can be adjusted by means of a hydraulic cylinder () and designed as a combination of a coupling arrangement () for the attachment of a tool and a tilt or demolition arrangement () for the controlled oscillation around the centre of an axis () at the free end of the manoeuvrable arm of an impact tool inserted into the hammer. In order to make the work of demolition efficient, a rotary joint () is arranged at one of the arm sections () that are a component of the manoeuvrable arm (), which rotary joint allows, through the influence of a rotator () a forward arm subsection () of the arm section, on which arm subsection the link system () is located, to place the end of the impact tool () that is located farthest forward against a working point in space though the forward arm subsection () being rotated around the longitudinal axis (A) of the arm section (). 119171730503245678101112131415. A demolition arrangement for a remote-controlled working machine () equipped with a manoeuvrable arm () , which machine ...

DEVICE AND METHOD FOR ROCK AND - CONCRETE MACHINING

The invention concerns a hydraulic, valveless impact mechanism for use in equipment for the machining of at least one of rock and concrete comprising a machine housing () with a cylinder bore, a piston () mounted such that it moves within this bore arranged to carry out when in operation repetitive reciprocating motion relative to the machine housing and in this way to deliver impact directly or indirectly on a tool connectable to the equipment for machining at least one of rock and concrete, and where the piston includes a driving part () that separates a first drive chamber () and a second drive chamber (), with an effective volume that is greater than that of the first drive chamber. The impact mechanism comprises further a starting means arranged such that it creates for a short duration, during an initial pressurisation of the impact mechanism, a connection between the second drive chamber and the first drive chamber, where the said connection can remain during one complete stroke cycle, in order in this way to set the piston into self-oscillation and avoid the piston remaining stationary at an equilibrium position. Furthermore, the invention concerns a rock drill with such an impact mechanism, and a rock drill rig comprising such a rock drill, and further a hydraulic release valve for the start of valveless hydraulic impact mechanisms. The invention concerns in addition to this a starting method for a hydraulic valveless impact mechanism. 1. A hydraulic , valveless impact mechanism for use in equipment for machining at least one of rock and concrete comprising a machine housing with a cylinder bore , a movable piston mounted in this bore and arranged to carry out repetitively reciprocating motion during operation relative to the machine housing , and in this way to deliver impacts directly or indirectly against a tool connectable to the equipment for machining at least one of rock and concrete , and where the piston includes a driving part that separates a ...

Hydraulic Impact Hammer Systems and Methods

A hydraulic impact hammer for striking a pile has a main housing, a ram supported for movement within the main housing, a coupler rod detachably attached to the ram, a conversion housing detachably attached to the main housing, a hydraulic actuator supported by the conversion housing, the hydraulic actuator defining an actuator rod, a lifting head, a lift connector, and a ram connector. The lift connector is detachably attaches the actuator rod to the lifting head. The ram connector detachably attaches the coupler rod to the lifting head. Operation of the hydraulic actuator raises and lowers the ram to strike the pile. 1. A hydraulic impact hammer for striking a pile comprising:a main housing;a ram supported for movement within the main housing;a coupler rod detachably attached to the ram;a conversion housing detachably attached to the main housing;a hydraulic actuator supported by the conversion housing, the hydraulic actuator defining an actuator rod;a lifting head;a lift connector, where the lift connector detachably attaches the actuator rod to the lifting head; anda ram connector, where the ram connector detachably attaches the coupler rod to the lifting head; wherebyoperation of the hydraulic actuator raises and lowers the ram to strike the pile.2. A hydraulic impact hammer as recited in claim 1 , further comprising an anvil supported by the main housing claim 1 , where the ram engages the anvil to strike the pile.3. A hydraulic impact hammer as recited in claim 1 , further comprising a valve assembly supported by the main housing claim 1 , where the valve assembly is arranged in a hydraulic mode when the hydraulic actuator raises and lowers the ram.4. A hydraulic impact hammer as recited in claim 1 , in which the lift connector comprises a rod nut configured to secure a distal end of the actuator rod relative to the lifting head.5. A hydraulic impact hammer as recited in claim 1 , in which the ram connector comprises a torque nut configured to secure a first ...

Front Head Nut Pocket Configuration for Hydraulic Hammer

A hydraulic hammer may include a power cell adapted to reciprocally drive a piston along an axis. The piston may, in turn, drive a hammer tool having a first end juxtaposed against the piston for accommodating cyclic impacts by the piston. While the first end of the hammer tool may be contained within a housing, the other end may extend from the housing for impacting rock, for example. The power cell and housing are axially secured together by a plurality of tie rods and nuts secured to ends of the tie rods, and the housing may include exterior pockets for accommodating the nuts. Each nut may have a circular exterior surface, and each nut pocket may have a generally elliptical interior surface, such that the exterior surface of each nut may be configured to engage at least two spaced apart areas of a corresponding interior surface of each nut pocket.

HYDRAULIC HAMMER HAVING SINGLE PIECE SEAL ASSEMBLY

A seal assembly for a hydraulic hammer is disclosed. The seal assembly may include a seal carrier having at least one annular recess. The seal assembly may also include at least one seal integrally molded onto surfaces of the at least one annular recess. 1. A seal assembly for a hydraulic hammer , the seal assembly comprising;a seal carrier having at least one annular recess; andat least one seal integrally molded onto surfaces of the at least one annular recess.2. The seal assembly of claim 1 , wherein the seal carrier is fabricated from a non-metallic material.3. The seal assembly of claim 1 , wherein the at least one seal includes:a first seal integrally molded onto surfaces of a first inner annular recess of the seal carrier; anda second seal integrally molded onto surfaces of a second inner annular recess of the seal carrier, the second inner annular recess being positioned gravitationally lower than the first inner annular recess.4. The seal assembly of claim 3 , wherein the first and second seals are fabricated from at least one of a rubber material or a polyurethane material.5. The seal assembly of claim 3 , wherein the first and second seals are unidirectional seals.6. The seal assembly of claim 5 , wherein:the first seal includes a U-shaped portion oriented generally upwards with respect to gravity; andthe second seal includes a U-shaped portion oriented generally downwards with respect to gravity.7. The seal assembly of claim 3 , further including:a third seal integrally molded onto surfaces of a third inner annular recess of the seal carrier, the third inner annular recess being positioned gravitationally lower than both the first and second inner annular recesses; anda fourth seal integrally molded onto the third seal.8. The seal assembly of claim 7 , wherein the third seal is fabricated from at least one of a rubber material or a polyurethane material claim 7 , and the fourth seal is fabricated from a nylon material.9. The seal assembly of claim 7 , ...

Hydraulic Hammering Device

A hydraulic hammering device enables an auto-stroke mechanism and an idle strike prevention mechanism to coexist with a simple circuit configuration. The device includes a first control valve to control advancing and retracting movements of a piston, an auto-stroke mechanism and an idle strike prevention mechanism, and a second control valve to select either of the auto-stroke mechanism and the idle strike prevention mechanism. To the second control valve, a shared spool is slidably fitted and a mode selection means is disposed. When the mode selection means allows supply of pressurized oil to an auto-stroke setting portion of the shared spool and prohibits discharge of pressurized oil from an idle strike prevention setting portion, the auto-stroke mechanism is selected. When prohibiting supply of pressurized oil to the auto-stroke setting portion and allowing discharge of pressurized oil from the idle strike prevention setting portion, the idle strike prevention mechanism is selected. 1a cylinder;a piston slidably fitted into the cylinder in such a manner as to be capable of advancing and retracting;a first control valve to control advancing and retracting movements of the piston;an auto-stroke mechanism configured to switch a piston stroke of the piston between a regular stroke and a short stroke shorter than the regular stroke;an idle strike prevention mechanism configured to decompress an inside of a circuit configured to hydraulically drive the piston to lower than a working pressure; anda second control valve to select either mode of the auto-stroke mechanism and the idle strike prevention mechanism, wherein:to the second control valve, a shared spool including an auto-stroke setting portion and an idle strike prevention setting portion at the same time is slidably fitted,a mode selection means for allowing and cutting off both of supply of pressurized oil to the auto-stroke setting portion and discharge of pressurized oil from the idle strike prevention ...

BLADE MOUNTING DEVICE, CHISEL AND BLADE THEREOF, CARVING CUTTER REPLACEABLE BLADE, AND ADAPTER FOR MOUNTING CARVING CUTTER REPLACEABLE BLADE ON BLADE MOUNTING DEVICE

A blade mounting device allows a blade of a pushing cut tool that cuts a workpiece by pushing a cutting edge forward to be mounted on an impact tool. This blade mounting device has a blade mounting portion for mounting the blade on the blade mounting device and a tool mounting portion secured to the blade mounting portion in order to mount the blade mounting device on the impact tool. The blade mounting portion has a front end portion where an inverted tapered hole complementary to an inclined shape surface formed on a tang of the blade is formed. The tool mounting portion is provided with a through hole perpendicular to the center axis and a center hole that reaches a through hole from a front side end surface of the tool mounting portion along the center axis. 1. A blade mounting device for mounting a blade of a pushing cut tool that cuts a workpiece by pushing a cutting edge forward on an impact tool , the blade mounting device comprising:a blade mounting portion configured to mount the blade on the blade mounting device; anda tool mounting portion that is secured to the blade mounting portion and configured to mount the blade mounting device on the impact tool, whereinthe blade mounting portion has a front end portion where an inverted tapered hole is formed to be complementary to an inclined shape surface formed on a tang of the blade,the tool mounting portion is provided with a through hole perpendicular to a center axis of the tool mounting portion and a center hole that reaches the through hole from a front side end surface of the tool mounting portion along the center axis, andthe blade mounting device is configured such that an impact force applied from the impact tool to the blade mounting device is transmitted to the blade via an inner surface of the inverted tapered hole and the inclined shape surface.2. The blade mounting device according to claim 1 , whereinthe inclined shape surface and the inverted tapered hole have an inclined angle set to be in a ...

Impact tool with vibration isolation

An impact tool is provided with vibration isolators to reduce vibrations felt by the operator gripping the handle of the tool. The impact tool has a hammer and an anvil that impact against each other during use. The impacts create undesirable vibrations in the tool housing and noise in the work area. The isolators are useful in minimizing such vibrations and noise.

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear bucket portion into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. An air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a top portion and a bottom portion, the top portion being provided with a concave room having an opening end and a bottom wall, the bottom portion being provided with an air inlet channel extending at an angle to communicate with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell, the inner tube shell with a front tube portion and a rear bucket portion extending into the concave room, wherein the front tube portion is provided with a movable hammer member, the rear bucket portion is provided with an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall of the rear bucket portion, wherein a sealing ring is provided on the rear bucket portion to closely connect with the concave room; anda communicating channel formed in a straight direction with no bend on a front side of the handle, a drilled opening formed on the ...

HYDRAULIC HAMMER ASSEMBLY

A hydraulic hammer assembly is disclosed. The hydraulic hammer assembly includes a piston and an accumulator membrane disposed external and coaxial to the piston The hydraulic hammer assembly includes a sleeve disposed coaxially between the piston and the accumulator membrane. The sleeve defines a first set of holes in an outer surface thereof to receive hydraulic fluid. The sleeve defines a second set of holes in an inner surface thereof and located distant from the first set of holes along a longitudinal axis of the sleeve. The sleeve defines a plurality of passages within a wall, and extending along the longitudinal axis. Each of the plurality of passages includes a porous medium to increase surface area of each of the plurality of passages. The increased surface area of each of the plurality of passages increases a rate of dissipation of heat from the wall of the sleeve. 1. A hydraulic hammer assembly comprising:a piston;an accumulator membrane disposed external and coaxial to the piston; and a first set of holes in an over surface thereof to receive hydraulic fluid;', 'a second set of holes in an inner surface thereof and located distant from the first set of holes along a longitudinal axis of the sleeve, wherein the inner surface and the outer surface define a thickness of a wall of the sleeve; and', 'a plurality of passages within the wall, the plurality of passages extending along the longitudinal axis, each of the plurality of passages fluidly connecting a hole of the first set of holes with a corresponding hole of the second set of holes,', 'wherein each of the plurality of passages includes a porous medium to increase surface area of each of the plurality of passages, and wherein the increased surface area of each of the plurality of passages increases rate of dissipation of heat from the wall of the sleeve., 'a sleeve disposed coaxially between the piston and the accumulator membrane, the sleeve defining2. The hydraulic hammer assembly of claim 1 , ...

Hydraulic Hammering Device

A hydraulic hammering device enables an auto-stroke mechanism and an idle strike prevention mechanism to coexist with a simple circuit configuration. The device includes a first control valve to control advancing and retracting movements of a piston, an auto-stroke mechanism and an idle strike prevention mechanism, and a second control valve to select either of the auto-stroke mechanism and the idle strike prevention mechanism. To the second control valve, a shared spool is slidably fitted and a mode selection means is disposed. When the mode selection means allows supply of pressurized oil to an auto-stroke setting portion of the shared spool and prohibits discharge of pressurized oil from an idle strike prevention setting portion, the auto-stroke mechanism is selected. When prohibiting supply of pressurized oil to the auto-stroke setting portion and allowing discharge of pressurized oil from the idle strike prevention setting portion, the idle strike prevention mechanism is selected. 1. A hydraulic hammering device , comprising:a cylinder;a piston slidably fitted into the cylinder in such a manner as to be capable of advancing and retracting;a first control valve to control advancing and retracting movements of the piston;an auto-stroke mechanism configured to switch a piston stroke of the piston between a regular stroke and a short stroke shorter than the regular stroke;an idle strike prevention mechanism configured to decompress an inside of a circuit configured to hydraulically drive the piston to lower than a working pressure; anda second control valve to select either mode of the auto-stroke mechanism and the idle strike prevention mechanism, wherein:to the second control valve, a shared spool including an auto-stroke setting portion and an idle strike prevention setting portion at the same time is slidably fitted,a mode selection means for allowing and cutting off both of supply of pressurized oil to the auto-stroke setting portion and discharge of ...

HAMMER ASSEMBLY

A hammer including a housing and a piston arranged for reciprocating movement within the housing is disclosed. The hammer further includes a head assembled on the housing and defining a chamber for holding a pressurized gas and a wall configured to abut the housing and defining a gas discharge passage extending between the chamber and the housing. A plug is positioned in the gas discharge passage and configured to move or deform under pressure of the pressurized gas in the chamber. 1. A hammer comprising:a housing;a piston arranged for reciprocating movement within the housing;a head assembled on the housing and defining a chamber for holding a pressurized gas; the head comprising a wall configured to abut the housing and defining a gas discharge passage extending between the chamber and the housing; anda plug positioned in the gas discharge passage and configured to move or deform under pressure of the pressurized gas in the chamber on separation of the head from the housing.2. The hammer of claim 1 , wherein the plug abuts the housing.3. The hammer of claim 1 , wherein the plug defines a clearance with the gas discharge passage.4. The hammer of claim 3 , wherein the plug comprises of a seal configured to engage the gas discharge passage.5. The hammer of claim 1 , wherein the head is assembled on the housing by bolts.6. The hammer of claim 1 , wherein the pressurized gas is nitrogen.7. The hammer of claim 1 , wherein the gas discharge passage has a first end exposed to the chamber and a second end having a receptacle configured to receive the plug.8. A hammer comprising:a first member and a second member configured for attachment to each other and defining a chamber for holding a pressurized gas;a gas discharge passage defined in the first member and extending between the chamber and an outside surface of the first member;a plug inserted in the gas discharge passage, the plug retained in the gas discharge passage against the pressure of the gas in the chamber by ...

Pneumatic Tool Having Movable Air Tube

A pneumatic tool contains: a body, a drive unit, a piston element, at least one buffer, and a movable air tube. The body includes an intake head, a limiting sleeve, a switch, an air conduit, and a connection portion. The connection portion has a first guide element, a first guiding orifice, and the limiting sleeve has a shoulder. The drive unit includes a moving tube, a first segment, and a second segment. The moving tube has a protrusion, the second segment has a second guide element and a second guiding orifice. The moving tube has a coupling orifice and a cavity, and an air valve is defined between the cavity and the second guide element. One buffer is defined between the first guide element and the second guide element and includes a first through hole. The movable air tube includes an air inlet segment and an air outlet segment. 1. A pneumatic tool having a movable air tube comprising:a body including an intake head and a limiting sleeve, the intake head having a switch arranged on an outer wall of the intake head, an air conduit defined in the intake head, and a connection portion formed on an end of the intake head, wherein the connection portion has a first guide element connected on an edge thereof, and the first guide element has a first guiding orifice, a first end of the limiting sleeve is connected with the connection portion of the intake head, and the limiting sleeve has a shoulder formed therein;a drive unit including a moving tube which has a first segment and a second segment, and the moving tube being slidably received in the limiting sleeve of the body, wherein the moving tube has a protrusion formed on an outer wall thereof and stopped by the shoulder of the limiting sleeve so that the moving tube does not slide forward in the limiting sleeve, the second segment of the moving tube has a second guide element arranged therein, the second guide element has a second guiding orifice defined thereon, the moving tube has a coupling orifice defined on a ...

DRIVER, STRIKING MECHANISM, AND MOVING MECHANISM

A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism movable in a first direction B and a second direction B opposite to the first direction B and a first moving mechanism configured to move the striking mechanism in the first direction B to strike a fastener, and the driver further includes a motor, a second moving mechanism rotated by the torque of the motor and configured to move the striking mechanism in the second direction against a force of the first moving mechanism, and torque suppression mechanisms A to H configured to suppress increase in the torque of the motor when the striking mechanism is moved in the second direction B 1. A driver comprising:a striking mechanism movable in a first direction and a second direction opposite to the first direction; anda first moving mechanism configured to move the striking mechanism in the first direction to strike a fastener,the driver including:a motor; anda second moving mechanism rotated by a torque of the motor and configured to move the striking mechanism in the second direction against a force of the first moving mechanism, a main body and', 'a first engaging portion protruding from the main body portion,, 'wherein the striking mechanism includes a first rotational element rotated by the motor; and', 'a plurality of second engaging portions disposed at intervals in a rotation direction of the first rotational element and capable of being engaged with and released from the first engaging portion, and, 'the second moving mechanism includesthe plurality of second engagin portions include at least two second engaging portions having different distances from a rotary shaft of the first rotational element.2. The driver according to claim 1 , wherein a distance between a back second engaging portion of the at least two engaging portions and the ...

REVERSIBLE BUSHING

A reversible bushing for a hydraulic hammer is provided. The reversible bushing includes a body having a first end, a second end, an inner surface, and an outer surface. The reversible bushing includes a first notch provided in relation to a center of symmetry. The reversible bushing includes a first channel provided on the first end of the body. The reversible bushing includes a second channel provided on the second end of the body. The reversible bushing also includes a first groove provided on the first end of the body. The reversible bushing further includes a second groove provided on the second end of the body. The first channel and the second channel are equidistant with respect to the center of symmetry. The first groove and the second groove are equidistant with respect to the center of symmetry. 1. A reversible bushing for a hydraulic hammer , the reversible bushing comprising:a body having an elongated configuration defining a longitudinal axis, the body having a first end and a second end distal with respect to the first end, the body having an inner surface and an outer surface disposed opposite with respect to the inner surface, the body defining a center of symmetry on the longitudinal axis;a first notch provided in relation to the center of symmetry, the first notch extending at least partially along the body;a first channel provided on the first end of the body, the first channel extending at least partially along the inner surface of the body;a second channel provided on the second end of the body, the second channel extending at least partially along the inner surface of the body;a first groove provided on the first end of the body, the first groove provided spaced apart with respect to the first channel, the first groove extending at least partially along the inner surface of the body; anda second groove provided on the second end of the body, the second groove provided spaced apart with respect to the second channel, the second groove extending ...

Cushion Device for Cylinder of Pneumatic Tool

A cushion device is used for a cylinder of a pneumatic tool, and the pneumatic tool contains: a body, a cylinder, a valve unit, a piston member, a cushion washer, and at least one spring. The body includes a grip and a fitting sleeve having a chamber, a closing element, and an opening. The cylinder is fitted in the chamber and includes a room and an abutting portion. The valve unit is mounted between the room and the abutting portion. The piston member is accommodated in the room and slides along a movement axis. The cushion washer and the at least one spring are mounted in the chamber, and the cushion washer abuts against the closing element and the pressing face. The cushion washer includes at least one open segment which has at least one air groove each having a mouth parallel to the movement axis. 1. A cushion device for a cylinder of a pneumatic tool , and the pneumatic tool comprising:a body including a grip and a fitting sleeve fitted with the grip, the fitting sleeve having a chamber defined therein, a closing element formed on a first end thereof, and an opening formed on a second end thereof, the closing element having an accommodation trough defined on a first side thereof facing the opening;a cylinder slidably fitted in the chamber of the fitting sleeve, and a part of the cylinder extending out of the fitting sleeve from the opening of the chamber, the cylinder including a room formed therein and an abutting portion adjacent to the closing element of the chamber of the fitting sleeve;a valve unit mounted between the room and the abutting portion of the cylinder;a piston member accommodated in the room of the cylinder and sliding forward and backward along a movement axis;a cushion washer being flexible and mounted in the chamber of the fitting sleeve, and the cushion washer abutting against the closing element of the chamber of the fitting sleeve and the pressing face of the abutting portion of the cylinder, wherein the cushion washer includes at least ...

Piston and Magnetic Bearing for Hydraulic Hammer

A hydraulic hammer includes a power cell. A work tool is partially received in, and movable with respect to, the power cell. A sleeve is positioned in the power cell that defines a centerline. A piston is concentrically positioned in the sleeve and movable in the sleeve between a first position in contact with the work tool and a second position out of contact with the work tool. A magnetic guide system includes at least one of a first magnetic guide component disposed in the piston and at least one of a second magnetic guide component disposed in the sleeve that interact to produce magnetic repellent forces therebetween to urge the radial position of the piston towards the center line. 1. A hydraulic hammer , comprising:a power cell;a work tool partially received in, and movable with respect to, the power cell;a sleeve positioned in the power cell and defining a centerline;a piston with a plurality of hydraulic surfaces, the piston concentrically positioned in the sleeve and movable in the sleeve between a first position in contact with the work tool and a second position out of contact with the work tool; anda magnetic guide system including at least one of a first magnetic guide component disposed in the piston and at least one of a second magnetic guide component disposed in the sleeve that interact to produce magnetic repellent forces therebetween to urge the radial position of the piston towards the centerline.2. The hydraulic hammer of claim 1 , wherein the magnetic guide system includes an electrodynamic bearing system.3. The hydraulic hammer of claim 2 , wherein the first magnetic guide component includes a first ring magnet and a second ring magnet disposed in an axially spaced apart configuration in the piston.4. The hydraulic hammer of claim 3 , wherein the second magnetic guide component includes a first conductive cylinder and a second conductive cylinder claim 3 , the first and second conductive cylinders disposed adjacent respective first and second ...

Hydraulic hammer and sleeve therefor

The present disclosure provides a sleeve for a hydraulic hammer. The sleeve includes an elongated body. The elongated body defines an outer surface, an inner surface, and a plurality of axial conduits to transmit hydraulic fluid. The elongated body further defines a plurality of radial holes extending from the plurality of axial conduits to the inner surface of the elongated body. The elongated body also defines a plurality of circumferential grooves on the inner surface. Each of the plurality of circumferential grooves is located along a longitudinal axis of the sleeve. The elongated body also defines at least one micro channel extending radially to form a fluid connection between each of the plurality of axial conduits and each of the plurality of circumferential grooves to transmit the hydraulic fluid for lubrication on the inner surface of the elongated body.

Hydraulic buffer with fast startup

An accumulator assembly includes a vessel having an upper portion and a lower portion. The accumulator assembly includes a flexible membrane extending between the upper portion and the lower portion. The membrane may divide the vessel into a first interior chamber and a second interior chamber. The accumulator assembly includes a receptacle located proximate the vessel. The receptacle may be in fluid communication with the second interior chamber. The accumulator assembly includes a plunger located at least partially within the receptacle.

LATCH MECHANISM FOR RETAINING AND REMOVING A VALVE BODY OF A HYDRAULIC HAMMER

A method of retaining and removing a valve locking body from a powered hammer assembly comprises inserting a locking member into a radially extending aperture of a cylinder, inserting a spring until the spring contacts the locking member; and inserting a keeper radially inwardly of the spring and the locking member and attaching the keeper to the cylinder. 1. A locking valve body assembly for use with a powered hammer assembly , the valve body assembly comprising:a valve body that defines a circumferential direction, a radial direction and a longitudinal axis, a void configured to contain a pressurized fluid;a cylinder configured to receive the valve body, the cylinder defining a radially extending locking aperture on it circumferential surface; and a radially extending locking member;', 'a spring biasing the locking member into the radially extending locking aperture of the cylinder; and', 'an actuator configured to move the locking member radially inward., 'a latch mechanism including'}2. The locking valve body assembly of wherein the locking member includes a main body extending radially through the locking aperture and the actuator extends radially from the main body past the circumferential surface of the cylinder and the actuator is integral with the main body of the locking member.3. The locking valve body assembly of further comprising a keeper disposed radially inward to the locking member and being configured to limit the radial inward movement of the spring and the locking member.4. The locking valve body assembly of wherein the locking member further comprises a hook portion and the valve body further defines a pocket configured to receive the hook portion of the locking member.5. The locking valve body assembly of claim 4 , wherein the valve body further comprises a retaining flange and the retaining flange defines the pocket configured to receive the hook portion of the locking member.6. The locking valve body assembly of claim 3 , wherein keeper ...

POWER TOOL

A power tool includes a housing, a prime mover disposed in the housing, a first cylinder formed with a first chamber, a first rotating member rotatable with respect to the first cylinder about a first axis under the driving of the prime mover, a first piston movable in a direction parallel to the first axis when the first rotating member rotates relative to the first cylinder. The first cylinder and the first rotating member are disposed within the housing. The first piston is disposed within the first chamber The first rotating member is formed with a first transmission structure to drive the first piston The first piston is formed with a second transmission structure capable of cooperating with the first transmission structure to rotate the first rotation member to drive the first piston. 1. A power tool , comprising:a housing;a prime mover disposed in the housing;a first cylinder formed with a first chamber;a first rotating member rotatable with respect to the first cylinder about a first axis under a driving force of the prime mover; anda first piston movable in a direction parallel to the first axis when the first rotating member rotates relative to the first cylinder;wherein the first cylinder and the first rotating member are disposed within the housing, the first piston is disposed within the first chamber, the first rotating member is formed with a first transmission structure to drive the first piston, and the first piston is formed with a second transmission structure capable of cooperating with the first transmission structure to rotate the first rotation member to drive the first piston.2. The power tool of claim 1 , wherein the prime mover comprises a prime mover shaft rotatable about a second axis perpendicular to the first axis and the power tool further comprises a reversing mechanism for reversing between the prime mover shaft and the first rotating member.3. The power tool of claim 2 , wherein the reversing mechanism comprises a first shaft that ...

HYDRAULIC PERCUSSION DEVICE AND CONSTRUCTION APPARATUS HAVING THE SAME

The present invention relates to a hydraulic percussion device and a construction apparatus having the same, the hydraulic percussion device comprising: a cylinder; a piston; a backward port connecting a front chamber of the cylinder to a hydraulic source; a forward port formed on a rear chamber of the cylinder; a forward/backward valve for controlling the forward and backward movement of the piston; a control line for moving the forward/backward valve to a forward-movement location; a long-stroke port formed between the forward port and the backward port; a short-stroke port formed between the backward port on the cylinder and the long-stroke port; a shift valve disposed between the short-stroke port and the control line; a proximity sensor for detecting a bottom dead point of the piston upon the stroke on an object; and a controller for determining a striking condition on the basis of the detected bottom dead point, and transmitting a control signal to the shift valve. 1. A percussion device that breaks an object , the device comprising:a cylinder for housing a piston;a piston for reciprocating in the cylinder;a backward port for connecting a front chamber being located at a front side of the cylinder to a hydraulic source;a forward port being formed in a rear chamber being located at a rear side of the cylinder;a forward-backward valve for controlling forward motion and backward motion of the piston by being positioned at one of a forward position for connecting the forward port to the hydraulic source and inducing the piston to move forward and a backward position for connecting the forward port to a hydraulic discharge line and inducing the piston to move backward;a control line for moving the forward-backward valve to the forward position when being connected to the hydraulic source;a long-stroke port for connecting the hydraulic source to the control line through the front chamber when the piston is moved backward to a first position, the long-stroke port ...

Shoed Hydraulic Hammer Piston

A piston for a hydraulic hammer assembly is provided. The piston may include an elongate member extending from a distal end to a proximal end and having a first outer diameter, a flange disposed on the elongate member and having a second outer diameter greater than the first outer diameter, and a non-ferrous shoe radially disposed on the flange. 1. A piston for a hydraulic hammer assembly , the piston comprising:an elongate member extending from a distal end to a proximal end and having a first outer diameter;a flange disposed on the elongate member and having a second outer diameter greater than the first outer diameter; anda non-ferrous shoe radially disposed on the flange.2. The piston of claim 1 , wherein the elongate member is configured to reciprocate within an inner diameter of a ferrous cylindrical chamber claim 1 , the non-ferrous shoe being composed of one or more arcuate members sized to sealably fit around the second outer diameter of the flange and within the inner diameter of the cylindrical chamber.3. The piston of claim 1 , wherein the non-ferrous shoe includes two or more arcuate members that are removably installed on the second outer diameter of the flange.4. The piston of claim 3 , wherein the arcuate members are coupled to one another using one or more removable fasteners.5. The piston of claim 1 , wherein the non-ferrous shoe has a third outer diameter greater than the second outer diameter.6. The piston of claim 1 , further comprising a second flange proximally disposed relative to the flange claim 1 , and a second non-ferrous shoe radially disposed on the second flange.7. The piston of claim 1 , wherein the non-ferrous shoe is permanently installed on the flange.8. The piston of claim 7 , wherein the non-ferrous shoe is applied on the second outer diameter of the flange using a liquid metal spray.9. A non-ferrous shoe for a hydraulic hammer piston claim 7 , the non-ferrous shoe comprising:at least two arcuate members formed of a non-ferrous ...

HYDRAULIC HAMMER HAVING IMPACT SYSTEM SUBASSEMBLY

An impact system for a hydraulic hammer is disclosed. The impact system may include a piston, a sleeve disposed co-axial with the piston, and an accumulator membrane disposed external to the sleeve. A first seal may be located at an end of the sleeve, and configured to connect the sleeve to the piston. The accumulator membrane may have an extension configured to engage a recess in the sleeve. 1. An impact system for a hydraulic hammer , the impact system comprising:a piston;a sleeve disposed co-axial with the piston;a first seal located at an end of the sleeve and configured to connect the sleeve to the piston; andan accumulator membrane disposed external to the sleeve and having an extension configured to engage a recess in the sleeve.2. The impact system of claim 1 , wherein the first seal is configured to generate a radial force on the sleeve and the piston after assembly that secures the sleeve to the piston.3. The impact system of claim 1 , wherein the extension is co-axial with the piston and oriented inwards towards the piston.4. The impact system of claim 1 , further including:a seal carrier disposed co-axial with the piston; anda second seal configured to connect the seal carrier to the piston.5. The impact system of claim 4 , wherein the second seal is configured to generate a radial force on the seal carrier and the piston after assembly that secures the seal carrier to the piston.6. The impact system of claim 5 , further including a valve trapped within a cavity formed between the seal carrier and the piston.7. The impact system of claim 6 , wherein the valve is disposed external to the accumulator membrane.8. The impact system of claim 6 , wherein the seal carrier and the sleeve overlap each other axially to form the cavity.9. The impact system of claim 8 , wherein:the seal carrier includes a female connector; andthe sleeve includes a male connector received by the female connector.10. The impact system of claim 1 , further including a sleeve liner ...

Power tool

A power tool is provided that includes a tool carrier for mounting an impact tool. The tool carrier has a base member aligned with an operational axis. The base member has a head end for receiving impact energy, a foot end provided with a tool mount configured to transmit the impact energy to the impact tool, and a casing engagement feature between the head end and foot end. A first casing module is provided with a tool carrier engagement feature complementary in shape to, and for interlocking engagement with, the tool carrier casing engagement feature to prevent rotation of the tool carrier relative to the first casing module around the operational axis, and permits relative movement between the tool carrier and the first casing module along the operational axis.

Controlled Pivot Impact Tools

Illustrative embodiments of controlled pivot impact tools are disclosed. In at least one illustrative embodiment, an impact tool may comprise a hammer configured to rotate about a first axis and to pivot about a second axis different from the first axis, where the hammer includes a cam groove formed in an outer surface of the hammer, an actuator coupled to the cam groove of the hammer and configured to pivot the hammer about the second axis between a disengaged position and an engaged position based on a position of the actuator along the cam groove, and an anvil configured to rotate about the first axis in response to being impacted by the hammer when the hammer is in the engaged position. 1. An impact tool comprising:a hammer configured to rotate about a first axis and to pivot about a second axis different from the first axis, the hammer including a cam groove formed in an outer surface of the hammer;an actuator coupled to the cam groove of the hammer and configured to pivot the hammer about the second axis between a disengaged position and an engaged position based on a position of the actuator along the cam groove; andan anvil configured to rotate about the first axis in response to being impacted by the hammer when the hammer is in the engaged position.2. The impact tool of claim 1 , further comprising a controller configured to:sense a rotational speed of the hammer about the first axis; andcause the actuator to pivot the hammer from the disengaged position, in which the hammer rotates about the first axis without impacting the anvil, to the engaged position, in which the hammer impacts the anvil, in response to the rotational speed of the hammer achieving a threshold rotational speed.3. The impact tool of claim 2 , wherein the controller is configured to cause the actuator to pivot the hammer from the engaged position to the disengaged position in response to the hammer impacting the anvil.4. The impact tool of claim 2 , wherein the controller is further ...

Shock Absorption Device for Pneumatic Tool

A device absorbs shock in a pneumatic tool containing a body, a cylinder, a valve unit, a piston member, plural buffer springs, and multiple fitting sleeves. The body includes a grip and a fitting sleeve fitted with the grip. The fitting sleeve has a chamber, a close face formed on a first end thereof, and an opening formed on a second end thereof. Each fitting sleeve is hollow and includes a limitation length forming along a hollow extending direction and shorter than a largest length. Multiple positioning sleeves are defined between a close face of the fitting sleeve and an abutting portion of the cylinder, and the multiple positioning sleeves are hollow so as to accommodate plural buffer springs. Because the limitation length is shorter than the largest length, the plural buffer springs extend out of the multiple positioning sleeves respectively. 1. A shock absorption device for a pneumatic tool , wherein a pneumatic tool comprises:a body including a grip and a fitting sleeve fitted with the grip, with the fitting sleeve having a chamber defined therein, a close face formed on a first end thereof, and an opening formed on a second end thereof;a cylinder slidably fixed in the chamber of the fitting sleeve and a part thereof extending out of the opening of the fitting sleeve, with the cylinder including a room defined therein and an abutting portion adjacent to the close face of the chamber of the fitting sleeve;a valve unit fixed between the room and the abutting portion of the cylinder;a piston member accommodated in the room of the body and sliding forward and backward along a movement axis;plural buffer springs mounted in the chamber of the fitting sleeve and abutting against the close face of the chamber of the fitting sleeve and the abutting portion of the cylinder, wherein a pressing direction of each buffer spring is parallel to the movement axis of the piston member, and plural elastic supporting points form between the close face and the abutting portion ...

TRANSPORTATION AND ELEVATION ASSIST DEVICE AND METHOD FOR TOOL HAVING STUCK BIT

A tool for removing a stuck bit of a drilling device from the drilling medium in which it was being drilled is provided. The system generally comprises a frame, a hydraulic lift operably connected to the frame, and a lifting platform. Operating the hydraulic lifting device may cause a strut to move in a linear direction, which may cause the carriage to move in a linear direction. By moving the strut in linear direction such that the carriage extends beyond the length of the drilling device, the carriage may contact the drilling medium, which may cause a lifting force to be applied to the drilling device. A user may then use the carriage to move the drilling device to a new location. 1) A transportation and elevation assist device comprising: a frame having a top portion and a bottom portion,', 'at least one wheel connected to said bottom portion,', 'at least one lifting platform connected to said bottom portion, and, 'a carriage comprising,'} 'wherein said hydraulic lift moves said top portion and said bottom portion about one another.', 'a hydraulic lift attached to said frame,'}2) The device of claim 1 , wherein said hydraulic lift comprises an upper section and a lower section claim 1 , wherein said upper section of said hydraulic lift is attached to said top portion of said frame claim 1 , wherein said lower section of said hydraulic lift is attached to said bottom portion of said frame.3) The device of claim 2 , wherein said upper section of said hydraulic lift comprises a housing and said lower section of said hydraulic lift comprises a strut.4) The device of claim 3 , wherein said top portion of said frame further comprises a tool connection element for securing a tool to said top portion of said frame.5) The device of claim 4 , wherein said tool connection element extends outwardly from said top portion of said frame claim 4 , wherein said tool connection element comprises at least one aperture for securing said tool.6) The device of claim 5 , wherein said ...

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear end into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. A sealed air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a concave room with an opening end and a bottom wall, the handle having an air inlet channel communicating with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell with a rear end extending into the concave room, wherein the inner tube shell is provided with a movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall located at the rear end of the inner tube shell with an elastic supporting member abutting against the end wall, wherein a first sealing member is provided at the rear end to closely connect with the concave room to seal the air room; anda communicating channel communicating the air inlet channel to the air room for air with high pressure entering the air room.2. The vibration reducing structure of pneumatic hammer of claim 1 , wherein a joint between the communicating channel and the ...

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear bucket portion into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. An air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a concave room with an opening end and a bottom wall, the handle having an air inlet channel communicating with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell with a front tube portion and a rear bucket portion extending into the concave room, wherein the front tube portion is provided with a movable hammer member, the rear bucket portion is provided with an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall of the rear bucket portion, wherein a sealing ring is provided on the rear bucket portion to closely connect with the concave room; anda communicating channel communicating the air inlet channel to the air room for air with high pressure entering the air room.2. The vibration reducing structure of pneumatic hammer of claim 1 , wherein the concave room extends in a first direction that is at an angle to ...

LOWER BUFFER AND BUSHING PROTECTOR

A protection assembly for a work implement includes an outer shield member and an inner shield member. The outer shield member is spaced from a housing of the work implement in a longitudinal direction and defines a channel. The channel extends to an exterior of the protection assembly. The inner shield member defines an opening and is slideably disposed in the channel. The inner shield member is free to slide in a transverse direction that is substantially perpendicular to the longitudinal direction. Movement of the inner shield member in the longitudinal direction is restricted by the housing of the work implement and the outer shield member. Movement of the inner shield member in the transverse direction is restricted by a work tool that is locked within and projects out of the housing and through the opening in the inner shield. 1. A protection assembly for a work implement that includes a housing , the protection assembly comprising:a first outer shield member spaced apart from the housing by a first distance along a longitudinal direction, the housing and the first outer shield member defining a channel therebetween, the channel extending in a transverse direction that is substantially perpendicular to the longitudinal direction, such that the channel extends to an exterior of the protection assembly,the first outer shield member having an outer concave edge that extends in a circumferential direction about a first axis that extends along the longitudinal direction; andan inner shield member slideably disposed in the channel, the inner shield member being free to slide along the channel in the transverse direction, the inner shield member having an internal edge and an external edge,the internal edge extending in the circumferential direction about a second axis that extends along the longitudinal direction, the internal edge defining an opening through the inner shield member, andthe internal edge of the inner shield member being disposed closer to the first ...

Multi-Stroke Powered Safety Hammer System

A multi-stroke powered safety hammer system includes a hammer having a body, a cylinder within the body, and a piston carried in the cylinder for reciprocal movement therein. The system includes a quick-connect coupling mount on the hammer, the mount having an inner barrel bounding a hollow interior, an outer sleeve for sliding movement over the inner barrel, and an engagement assembly defined by the inner barrel and the outer sleeve for locking an attachment in the interior. The system includes one of many attachments with an engagement portion; when the engagement portion is applied to the quick-connect coupling mount and the hammer is operated, the piston reciprocates to impact the engagement portion. The attachments guide fasteners, remove fasteners, and process materials. 1. A multi-stroke powered safety hammer system comprising:a hammer including a body having opposed front and rear ends, a cylinder within the body, and a piston carried in the cylinder for reciprocal movement between the front and rear ends;a quick-connect coupling mount on the hammer, the mount including an inner barrel bounding a hollow interior coaxial to the piston, an outer sleeve for sliding movement over the inner barrel, and an engagement assembly defined by the inner barrel and the outer sleeve for locking an attachment in the hollow interior; andan attachment, the attachment including an engagement portion, such that when the engagement portion is applied to the quick-connect coupling mount and the hammer is operated, the piston reciprocates to impact the engagement portion;wherein the attachment is for holding and guiding fasteners during operation of the hammer.2. The multi-stroke powered safety hammer system of claim 1 , further comprising a bumper in the cylinder claim 1 , the bumper disposed in front of the piston between the piston and the cylinder.3. The multi-stroke powered safety hammer system of claim 2 , wherein the bumper has a central bore coaxial to the piston and to ...

LOW-NOISE HYDRAULIC HAMMER

The present invention relates to a hydraulic hammer, and more specifically, to a low-noise hydraulic hammer, wherein an impact bar that is accommodated inside of a piston is inclined so as not to contact the inside of the piston thereby preventing cracks, and a noise insulating material or a heat sink is installed inside the piston or outside the impact bar, thereby reducing noise and improving heat radiation performance. 1. A low-noise hydraulic hammer comprising:{'b': 200', '300', '120', '100, 'an impact bar () formed in a striking part () and inserted into a receiving part () in a piston (),'}{'b': 120', '120', '200, 'wherein both inner lateral sides of the receiving part () are inclinedly formed such that a diameter of the receiving part () is increased toward the impact bar (), and'}{'b': 200', '120', '100', '120', '120, 'the impact bar () is received in the receiving part () to make contact with the piston (), formed with a diameter reduced toward the receiving part (), and spaced apart from the both inner lateral sides of the receiving part () by a specific distance.'}2130120200200140. The low-noise hydraulic hammer of claim 1 , wherein a contact part () serving as a bottom surface of the receiving part () and making contact with the impact bar () protrudes toward the impact bar () by a predetermined height claim 1 , and is formed at both sides thereof with buffer grooves () curved with a predetermined curvature.3120160. The low-noise hydraulic hammer of claim 1 , wherein the receiving part () is provided on one lateral side thereof with a noise insulating material ().4200220. The low-noise hydraulic hammer of claim 1 , wherein the impact bar () is formed on an outer lateral side thereof with a plurality of steps () for attenuation of noise.5230200110100110130120200aa. The low-noise hydraulic hammer of claim 2 , wherein a contact surface () serving as an outer surface of the impact bar () and facing a bottom surface () of the piston () is formed to be spaced ...

HAMMERING DEVICE

Hammering device functioning with pressure fluid of a hydraulic arrangement which hammering device comprises a body (), () which can be attached to a working machine on which machine a hammering mass () is adjusted to be resting and to be moving which hammering mass is moved into a hammering position with the help of hydraulic pressure by directing the pressurized fluid into the ring-shaped, first chamber space () wherein the hammering mass () when it is moving into a hammering position compresses gas in the chamber space (K) located at the first side of the hammering mass () and in order to perform the hammering movement with the hammering mass () to the hammering element (), () the flow of hydraulic pressure is blocked to the first chamber space () and the access for pressure fluid is allowed away from the first chamber space () with the help of the valve (). In order to remove the pressure fluid fast from the first chamber space () the ring-shaped, second chamber space () is adjusted to be an extension for the first chamber space () and a ring-shaped valve () which comprises a closing ring is adjusted between the mentioned chamber spaces (), () the port of which valve is formed of a group of holes which holes are located in the mentioned closing ring. 11619363133527662676267672673. Hammering device functioning with pressure fluid of a hydraulic arrangement which hammering device comprises a body () , () which can be attached to a working machine on which machine a hammering mass () is adjusted to be resting and to be moving which hammering mass is moved into a hammering position with the help of hydraulic pressure by directing the pressurized fluid into the ring-shaped , first chamber space () in which case the hammering mass () when it is moving into a hammering position compresses gas in the chamber space (K) located at the first side of the hammering mass () and in order to perform the hammering movement with the hammering mass () to the hammering element () , ...

OPTIMIZED PNEUMATIC HAMMER

The optimized pneumatic hammer is characterized by maximum performance efficiency that is achieved due to author's analytical investigations which revealed the existence of the optimal value of the striker's length with respect to maximum kinetic energy of the tool. On the contrary to the existing hammers, in the optimized hammers the length of the strikers is shorter than their strokes. Calculations based on the mentioned investigation show that the kinetic energy of optimized hammers could be about 2.5 times higher than of their existing counterparts. The optimized pneumatic hammer has two modes of operation—the regular mode of operation during which the tool interacts with the target media and the retracting mode of operation for releasing the severely jammed tool from the media. Optimized pneumatic hammers allow for a considerable decrease of their weight and diameters without compromising their performance while making easier the work of the operators. 1. An optimized pneumatic hammer characterized by the maximum kinetic energy of its tool and by the ability of working in a regular mode of operation during which said tool interacts with the target media or in a retracting mode of operation during which said tool is released from being jammed by the media and comprising:a tubular housing assembly including a tubular housing that accommodates the basic assemblies and components of said optimized pneumatic hammer, a rigidly attached to the lateral surface of said tubular housing longitudinal structural shape creating a longitudinal air passage allowing the compressed air to communicate between the rear and front ends of said tubular housing, and means for handling said optimized pneumatic hammer by an operator or mechanical arm;an air control valve chest assembly including an air control valve chest rigidly secured into the rear end of said tubular housing and having air passages allowing the compressed air that is needed for the operation of said optimized hammer ...

Fixing Structure for Cylinder

A fixing structure for a cylinder is employed to a pneumatic tool, and the pneumatic tool contains: a body, a valve unit, a cylinder, a piston member, and at least one positioning element. The body includes a cylindrical portion and a grip, the cylindrical portion has a chamber with an opening, and the cylindrical portion has at least one orifice. The valve unit is mounted in the chamber, and the cylinder is secured in the chamber to contact with the valve unit and includes a room and at least one locking notch. The piston member is placed into the room to push high pressure air to flow along the room. The at least one positioning element is inserted into each orifice of the cylindrical portion, such that a part of each positioning element retains with each locking notch, thus fixing the cylinder with the cylindrical portion. 1. A fixing structure for a cylinder being employed to a pneumatic tool , and the pneumatic tool comprising:a body including a horizontally cylindrical portion and a grip connecting with the cylindrical portion, the cylindrical portion having a chamber with an opening formed on a front end of the chamber, the cylindrical portion having at least one orifice passing through one side of the cylindrical portion and communicating with the chamber;a valve unit mounted in the chamber, and high pressure air flowing toward the valve unit via the body;a cylinder secured in the chamber to contact with the valve unit, and the cylinder including a room defined therein and at least one locking notch formed thereon, wherein each locking notch corresponds to each orifice and does not pass through the room;a piston member placed into the room of the cylinder, and the valve unit pushing the high pressure air to flow along the room forward and backward; andat least one positioning element inserted into each orifice of the cylindrical portion of the body, such that a part of each of the at least one positioning element retains with each locking notch of the ...

Shock Absorption Device for Pneumatic Tool

A shock absorption device for a pneumatic tool, wherein a pneumatic tool contains: a body, a cylinder, a valve unit, and a piston member. The body includes a grip and a fitting sleeve fitted with the grip, wherein the fitting sleeve has a chamber, a close face formed on a first end thereof, and an opening formed on a second end thereof. The cylinder slidably is fixed in the chamber and a part thereof extends out of the opening, the cylinder includes a room and an abutting portion adjacent to the close face. The valve unit is fixed between the room and the abutting portion of the cylinder. The piston member is accommodated in the room and slides forward and backward along a movement axis. Plural buffer springs are mounted in the chamber and abut against the close face of the fitting sleeve and the abutting portion of the cylinder. 1. A shock absorption device for a pneumatic tool , wherein a pneumatic tool comprises:a body including a grip and a fitting sleeve fitted with the grip, the fitting sleeve having a chamber defined therein, a close face formed on a first end thereof, and an opening formed on a second end thereof;a cylinder slidably fixed in the chamber of the fitting sleeve and a part thereof extending out of the opening of the fitting sleeve, the cylinder including a room defined therein and an abutting portion adjacent to the close face of the chamber of the fitting sleeve;a valve unit fixed between the room and the abutting portion of the cylinder;a piston member accommodated in the room of the body and sliding forward and backward along a movement axis; plural buffer springs mounted in the chamber of the fitting sleeve and abutting against the close face of the chamber of the fitting sleeve and the abutting portion of the cylinder, wherein a pressing direction of each buffer spring is parallel to the movement axis of the piston member, and plural elastic supporting points form between the close face and the abutting portion.2. The shock absorption ...

Multi-Stroke Powered Safety Hammer System

A multi-stroke powered safety hammer including a cylinder having an end, the cylinder mounted to and extending outwardly from a body to the end, and an impact piston disposed within the cylinder for axial reciprocating movement, the impact piston having a striking surface at a front end thereof. The hammer further includes a mount connected releasably over the end of the cylinder and is configured to receive and releasably secure a base of a tool for reciprocating movement, the base including an end having an impact surface. The end of the cylinder is configured to receive the end of the base for reciprocating movement in confronting relation of the impact surface to the striking surface when the base is received and releasably secured by the mount for reciprocating movement. 1. A multi-stroke powered safety hammer , comprising:a cylinder including an end, the cylinder mounted to and extending outwardly from a body to the end;an impact piston disposed within the cylinder for axial reciprocating movement, the impact piston including a striking surface at a front end thereof;a mount connected releasably over the end of the cylinder, the mount configured to receive and releasably secure a base of a tool for reciprocating movement, the base including an end having an impact surface; andthe end of the cylinder configured to receive the end of the base for reciprocating movement in confronting relation of the impact surface to the striking surface when the base is received and releasably secured by the mount for reciprocating movement.2. The multi-stroke powered safety hammer of claim 1 , further comprising a bumper mounted in the cylinder between the end of the cylinder and the striking surface of the impact piston claim 1 , the bumper axially confronting the striking surface.3. The multi-stroke powered safety hammer of claim 2 , wherein the bumper axially spaces the end of the cylinder apart from the striking surface of the impact piston.4. The multi-stroke powered ...

HYDRAULIC BREAKER

The present invention relates to a hydraulic breaker comprising: a back head having a gas chamber provided therein; a cylinder disposed at the lower part of the back head, and having a hydraulic passage and a hydraulic space; a front head disposed at the lower part of the cylinder; a chisel provided inside the front head; a piston provided to reciprocate in the cylinder so as to hit the chisel; and a breaker main body having a plurality of penetration bolts integrally connecting the back head, the cylinder, and the front head, wherein the back head of the breaker main body is provided with a control valve for supplying and blocking hydraulic pressure to/from the hydraulic passage and the hydraulic space. 1. A hydraulic breaker comprising a breaker main body comprising:a back head provided with a gas chamber therein;a cylinder positioned below the back head and provided with a hydraulic path and a hydraulic space;a front head positioned below the cylinder;a chisel installed inside the front head;a piston reciprocally movably installed in the cylinder so as to strike the chisel; anda plurality of through bolts connecting the back head to the cylinder to the front head,wherein the back head of the breaker main body is provided with a control valve to supply hydraulic pressure to the hydraulic path and the hydraulic space and block the supply.2. The hydraulic breaker according to claim 1 ,wherein the cylinder is provided, on an outer side thereof, with an accumulator to smooth flow of a fluid through the hydraulic path.3. The hydraulic breaker according to claim 1 , wherein the hydraulic breaker comprises:a bracket surrounding and supporting the breaker main body and installed at an excavator, a lower end portion of the breaker main body inserted into the bracket being fixed to the bracket by a fixing member, and three remaining surfaces except for a front surface of an upper end portion of the breaker main body being supported by the bracket by a fixing pad;a stopper ...

HYDRAULIC HAMMER ASSEMBLY

A hydraulic hammer assembly is provided. The hydraulic hammer assembly includes a housing and a piston is arranged for reciprocating movement along a longitudinal axis within the housing. A head disposed along the longitudinal axis on an end of the housing and defines a chamber for holding a pressurized gas. The hydraulic hammer assembly further includes a locking mechanism to lock the head on the housing. The locking mechanism includes at least one first flange extending radially from the end of the housing and at least one second flange extending radially from the head, wherein the head is retained on the housing by blocking axial movement of the second flange against the first flange when in a locked position. 1. A hydraulic hammer assembly comprising:a housing;a piston arranged for reciprocating movement along a longitudinal axis within the housing;a head disposed along the longitudinal axis on an end of the housing and defining a chamber for holding a pressurized gas; and at least one first flange extending radially from the end of the housing;', 'at least one second flange extending radially from the head;', 'wherein the head is retained on the housing by blocking axial movement of the second flange against the first flange when in a locked position., 'a locking mechanism to lock the head on the housing, the locking mechanism comprising2. The hydraulic hammer assembly of claim 1 , the hydraulic hammer assembly further comprising:a biasing member disposed between the head and the housing, the biasing member configured to bias the second flange along the longitudinal axis into contact with the first flange.3. The hydraulic hammer assembly of claim 1 , wherein the housing defines an opening adjacent to the first flange to receive the second flange in the end of the housing through the opening in an unlocked position.4. The hydraulic hammer assembly of claim 1 , wherein the first flange extends radially inwards from the end of the housing and the second flange ...

Single-shot type air hammer tool and method of adjusting striking force thereof

A partially-removed ring body is arranged at the predetermined position facing the hammer in a stop position of the cylinder, and a part of the partially-removed ring body protrudes toward the inside of the cylinder. In addition, a recessed groove is formed in the position corresponding to the partially-removed ring body of the hammer at the stop position, and the recessed groove catches the partially-removed ring body, and thus the hammer is positioned at the stop position in the cylinder.

HAMMER HAVING COMPOSITE PISTON SLEEVE

A sleeve is disclosed for use with a piston of a hydraulic hammer. The sleeve may have a generally cylindrical body with a top end and a bottom end, and a central bore passing axially from the top end of the generally cylindrical body to the bottom end. The generally cylindrical body may be a composite structure including a guide layer forming an inner annular surface of the central bore, an energizer layer located radially outward of the guide layer and being bonded to the guide layer, and a support layer bonded to the energizer layer. The support layer may form an outer surface of the generally cylindrical body. 1. A sleeve for a piston of a hydraulic hammer , the sleeve comprising:a generally cylindrical body having a top end and a bottom end; anda central bore passing axially from the top end of the generally cylindrical body to the bottom end; a guide layer forming an inner annular surface of the central bore;', 'an energizer layer located radially outward of the guide layer and being bonded to the guide layer; and', 'a support layer bonded to the energizer layer and forming an outer surface of the generally cylindrical body., 'wherein the generally cylindrical body is a composite structure including2. The sleeve of claim 1 , wherein the energizer layer surrounds and compresses the guide layer inward.3. The sleeve of claim 1 , further including a valve chamber formed in the top end of the sleeve claim 1 , wherein:the guide and energizer layers terminate at an inner axial end of the valve chamber; andthe support layer extends past the inner axial end of the valve chamber and forms an annular wall of the valve chamber.4. The sleeve of claim 1 , wherein:a thickness of the support layer is greater than a thickness of the energizer layer;a thickness of the energizer layer is greater than a thickness of the guide layer;the thickness of the guide layer is less than one-fourth of a total thickness of the sleeve; andthe thickness of the energizer layer is about ¼-½ of ...

Impact Hammer

A hydraulic, pneumatic, gasoline, diesel, or electric tool may include a spindle that is adapted for rotational movement. A swing arm may be coupled to the spindle such that rotational motion of the spindle is transferred to the swing arm. The swing arm makes contact with a piston such that the rotational motion causes the piston to move along a linear path. The piston may interact with an energy storage medium when the swing arm moves the piston in the first direction, causing energy to be stored in the energy storage medium. As the swing arm continues to rotate, the swing arm may lose contact with the piston, thus allowing the energy storage medium to urge the piston in a second direction opposite the first direction to strike an anvil. The swing arm may be a multiple roller swing arm. The energy storage medium may be a compound spring assembly. 1. An impact hammer , comprising:a spindle adapted for rotational movement; a first end, the first end comprising a first swing arm to piston engagement roller;', 'a second end, the second end comprising a second swing arm to piston engagement roller; and', 'an attachment point, the attachment point being rotatably coupled to the spindle such that the rotational motion of the spindle is transferred to the swing arm;, 'a multiple roller swing arm comprisinga piston comprising a piston contact surface adapted to contact the first swing arm to piston engagement roller such that rotation of the multiple roller swing arm causes the piston to move in a first direction along a linear path, the piston interacting with an energy storage medium when the multiple roller swing arm moves the piston in the first direction causing energy to be stored in the energy storage medium; andan anvil comprising an anvil impact surface adapted to contact the piston;wherein continued rotation of the multiple roller swing arm causes the first swing arm to piston engagement roller to lose contact with the piston contact surface allowing the energy ...

Shock Absorption Structure of the Pneumatic Tool

A shock absorption structure of a pneumatic tool, the pneumatic tool contains: a body, a cylinder, a gas valve unit, an impact element, and an elastic unit. The body includes an air channel and a cavity having a closing face, an opening, and an air chamber. The body also includes a first orifice and a second orifice. The cylinder includes a sliding room, a contacting fringe, a defining cutout, and an air inlet. The gas valve unit is fixed between the sliding room and the contacting fringe. The impact element is disposed in the sliding room and is pushed by the high pressure gas to reciprocately move. The elastic unit includes an elastic pushing force and is secured in the air chamber so as to push against the closing face and the contacting fringe and to push the cylinder to move away from the grip handle. 1. A shock absorption structure of a pneumatic tool , the pneumatic tool comprising:a body including an air channel configured to flow high pressure gas, and the body including a cavity defined in the body, the cavity having a closing face formed on a first end thereof, and the cavity having an opening defined on a second end of the body opposite to the first end of the cavity, the body also including a first orifice passing through the cavity, and the body including a second orifice communicating with the air channel and the cavity, the first orifice accommodating a limitation element, a part of which extends to the cavity;a cylinder movably fixed in the cavity of the body and a part of the cylinder extending out of the body from the opening of the cavity, the cylinder including a sliding room defined in the cylinder, and the cylinder including a contacting fringe arranged on one end of the cylinder facing the closing face of the cavity of the fitting sleeve, the cavity of the body having an air chamber defined between the contacting fringe and the closing face, the cylinder having a defining cutout formed on an outer wall of the cylinder corresponding to the ...

Impact Hammer

A hydraulic, pneumatic, gasoline, diesel, or electric tool may include a spindle that is adapted for rotational movement. A swing arm may be coupled to the spindle such that rotational motion of the spindle is transferred to the swing arm. The swing arm makes contact with a piston such that the rotational motion causes the piston to move along a linear path. The piston may interact with an energy storage medium when the swing arm moves the piston in the first direction, causing energy to be stored in the energy storage medium. As the swing arm continues to rotate, the swing arm may lose contact with the piston, thus allowing the energy storage medium to urge the piston in a second direction opposite the first direction to strike an anvil. The swing arm may be a multiple roller swing arm. The energy storage medium may be a compound spring assembly. 1. An impact hammer , comprising:a spindle adapted for rotational movement; a first end, the first end comprising a first swing arm to piston engagement roller; and', 'a second end, the second end comprising a second swing arm to piston engagement roller; and, 'a multiple roller swing arm comprisinga piston comprising a piston contact surface adapted to contact the first swing arm to piston engagement roller such that rotation of the multiple roller swing arm causes the piston to move in a first direction along a linear path, the piston interacting with an energy storage medium when the multiple roller swing arm moves the piston in the first direction causing energy to be stored in the energy storage medium;wherein continued rotation of the multiple roller swing arm causes the first swing arm to piston engagement roller to lose contact with the piston contact surface allowing the energy storage medium to urge the piston in a second direction opposite the first direction allowing the piston to strike an anvil impact surface for a first strike during a single rotation of the spindle;wherein continued rotation of the multiple ...

PNEUMATIC ROOFING MATERIAL REMOVAL TOOL

A pneumatic roofing material removal tool includes a single-acting pneumatic cylinder with a heavy piston for driving a blade under roofing materials and fasteners to detach them from a roof. The blade is connected to a driver having a blade end and an anvil end. Impacts upon the driver are transmitted to the blade, the driver and the blade being in rigidly fixed relationship. The single-acting pneumatic cylinder applies a forceful impact to the anvil end of the driver sufficient to move the driver and the attached blade under the roofing materials, and towards at least one fastener. Also included is a frame that slidably supports the driver and handle assembly, the frame also fixedly supporting the single-acting pneumatic cylinder. The roofing material removal tool increases the speed, ease, and efficiency of removing old roofing materials from a roof, and increases safety, while reducing physical labor and risk of injury. 1. A pneumatic roofing material removal tool for use by a roofer when removing roofing material from a roof , the tool comprising:a driver having a blade end and an anvil end, such that any impacts upon the anvil end of the driver are transmitted to the blade end of the driver;a blade configured to be wedged under at least one layer of roofing material, the blade being in rigidly connected constant-angled relationship with the blade end of the driver, and the blade being shaped so as to include a pivoting fulcrum that is configured to enable the blade to pry up the at least one layer of roofing material whenever the anvil end of the driver is pressed downward;a single-acting pneumatic cylinder configured to apply forceful impacts to the anvil end of the driver, the single-acting pneumatic cylinder including a heavy piston weighing at least 0.5 pounds;a handle assembly configured to be gripped by a user, and configured such that when the user presses downward on the handle, the anvil end of the driver is pressed downward; and an upper portion in ...

HYDRAULIC HAMMER

A hydraulic hammer includes a housing defining a cutout and a power cell slidably received within the housing. The power cell includes a valve assembly extending from a side of the power cell. The valve assembly is at least partially received within the cutout of the housing. The hydraulic hammer further includes a pair of wear plates at least partially disposed around the valve assembly of the power cell. Each of the pair of wear plates is coupled to at least one of the power cell and the housing. 1. A hydraulic hammer comprising:a housing defining a cutout;a power cell slidably received within the housing, the power cell including a valve assembly extending from a side of the power cell, wherein the valve assembly is at least partially received within the cutout of the housing; anda pair of wear plates at least partially disposed around the valve assembly of the power cell, wherein each of the pair of wear plates is coupled to at least one of the power cell and the housing.2. The hydraulic hammer of claim 1 , wherein the cutout is U-shaped.3. The hydraulic hammer of claim 1 , wherein the cutout is defined by an internal wall of the housing.4. The hydraulic hammer of claim 3 , wherein the housing further comprises an external wall spaced apart from the internal wall claim 3 , and wherein the valve assembly extends through the cutout towards the external wall.5. The hydraulic hammer of claim 1 , wherein each of the pair of wear plates includes a pair of projecting portions adapted to be removably received within corresponding apertures of the power cell.6. The hydraulic hammer of claim 1 , further comprising a top buffer disposed proximate to a top end of the housing.7. The hydraulic hammer of claim 6 , further comprising a bottom buffer disposed proximate to a bottom end of the housing.8. The hydraulic hammer of claim 7 , further comprising a middle buffer disposed between the top buffer and the bottom buffer.9. A hydraulic hammer comprising:a housing defining a ...

Polishing composition

A polishing composition includes colloidal silica. The colloidal silica has such a particle diameter as to satisfy the relationship of the inequality: DSA & DN4, between an average primary particle diameter DSA of the colloidal silica calculated on the basis of a BET*method and an average secondary particle diameter DN4 of the colloidal silica measured by a laser diffraction method. The colloidal silica has the average secondary particle diameter DN4 of 30 nm or smaller. The polishing composition can inhibit a polishing rate from remarkably decreasing due to clogging in a polishing pad. (*BET refers to the Brunauer-Emmett-Teller equation).

Polishing composition and polishing method

A polishing composition includes colloidal silica. The colloidal silica has such a particle diameter as to satisfy the relationship of the inequality: D SA ≦D N4 , between an average primary particle diameter D SA of the colloidal silica calculated on the basis of a BET method and an average secondary particle diameter D N4 of the colloidal silica measured by a laser diffraction method. The colloidal silica has the average secondary particle diameter D N4 of 30 nm or smaller. The polishing composition can inhibit a polishing rate from remarkably decreasing due to clogging in a polishing pad.

Pneumatic hammer

FIELD: technological processes.SUBSTANCE: invention relates to a pneumatic hammer. Hammer comprises a cylindrical body, a working tool retained relative to the cylindrical body, a handle with a body, a partition with an axial hole, in which a tube is fixed, annular outlet chamber with an outlet formed by said partition, a cylindrical body and a handle body, a flow prechamber formed by the handle body and the partition, and hammer, made with through axial channel for passage of said tube and separating cavity of cylindrical housing on working stroke chamber and idle stroke chamber on side of working tool. Hammer has a screw-through through slot with variable cross-section and constantly open outlets on both end faces of the striker on the side of working and idling chambers with constant communication of both chambers to each other. Through screw groove is made with decreasing cross-section area towards idling chamber.EFFECT: as a result, reduced air flow from the network, higher efficiency of the hammer and impact energy transmitted to the working tool.1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 728 059 C1 (51) МПК B25D 9/04 (2006.01) B25D 9/26 (2006.01) B25D 17/02 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B25D 9/04 (2020.02) (21)(22) Заявка: 2019143871, 23.12.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 28.07.2020 (45) Опубликовано: 28.07.2020 Бюл. № 22 2 7 2 8 0 5 9 R U (56) Список документов, цитированных в отчете о поиске: RU 2583575 C1, 10.05.2016. RU 2259477 C2, 27.08.2005. RU 2612889 C2, 13.03.2017. DE 546489 C, 14.03.1932. (54) Пневматический молоток (57) Реферат: Изобретение относится к пневматическому молотку. Молоток содержит цилиндрический корпус, рабочий инструмент, удерживаемый относительно цилиндрического корпуса, рукоять с корпусом, перегородку с осевым отверстием, в котором закреплена трубка, кольцевую выпускную камеру с ...

Hydraulic rock breaker

FIELD: process engineering. SUBSTANCE: invention relates to percussion tools, namely, hydraulic rock breakers. Proposed device comprises one-piece case with piston and piston rod, moving hammer, working tool and pressure conversion piston. Gas chamber is arranged between case, pressure conversion piston and hammer. Pressure conversion cylinder and compensation chamber are arranged between pressure conversion piston and piston rod. Connection channel is made between gas and compensation chambers. EFFECT: decreased weight and sizes, smaller recoil pulses. 6 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 449 882 (13) C2 (51) МПК B25D 9/04 (2006.01) B25D 9/20 (2006.01) B25D 9/26 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010103146/02, 08.07.2008 (24) Дата начала отсчета срока действия патента: 08.07.2008 (73) Патентообладатель(и): КОНЕК с.р.о. (SK) R U Приоритет(ы): (30) Конвенционный приоритет: 09.07.2007 SK PP 93-2007 (72) Автор(ы): КОНЕЧНИК Штефан (SK) (43) Дата публикации заявки: 20.08.2011 Бюл. № 23 2 4 4 9 8 8 2 (45) Опубликовано: 10.05.2012 Бюл. № 13 (56) Список документов, цитированных в отчете о поиске: US 5113950 A, 19.05.1992. SU 859622 A1, 30.08.1981. SU 845796 A3, 07.07.1981. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 09.02.2010 2 4 4 9 8 8 2 R U (87) Публикация заявки РСТ: WO 2009/008844 (15.01.2009) C 2 C 2 (86) Заявка PCT: SK 2008/000008 (08.07.2008) Адрес для переписки: 400096, г.Волгоград, а/я 4, пат.пов. Б.И.Машкину (54) ГИДРАВЛИЧЕСКИЙ ОТБОЙНЫЙ МОЛОТОК (57) Реферат: Изобретение относится к ударным устройствам, а именно к гидравлическим отбойным молоткам. Отбойный молоток содержит монолитный корпус с поршневым штоком и поршнем, подвижным ударником, рабочим инструментом и поршнем преобразователя давления. Между корпусом, поршнем преобразователя давления и ударником образована газовая камера. Между поршневым штоком и поршнем преобразователя ...

Adjustable compression-vacuum shock machine of double action

FIELD: construction. SUBSTANCE: machine comprises a housing and a striker arranged therein, forming the upper chamber and the lower chamber, a vacuum compressor located at the upper part of the housing, connected to the upper chamber and comprising at least one pair of centrifugal compression-vacuum mechanisms mounted oppositely to each other with suction openings connected to the disc and having a common channel through an opening in this disc, which forms chambers above and below the disc in the upper housing part. The chamber above the disc is connected to the atmosphere, and cuts off said upper chamber and the chamber under the disc from the atmosphere. Said centrifugal compression-vacuum mechanisms are electrically connected to a three-position switch electrically connected to the current source, a receiver connected to the upper chamber, a magnetic lock for the striker, installed in the upper chamber, and a working tool. The lower chamber is connected to the atmosphere. The receiver is located in the housing between the upper chamber and the vacuum compressor and is connected to the upper chamber through the openings of the centering disk separating the receiver from the upper chamber, and to the vacuum compressor - through the openings in the mounting disc separating the vacuum compressor from the receiver. The magnetic lock for the striker is connected to a regulator located in the receiver and made with the possibility to change its length. EFFECT: ensuring the possibility to expand the energy of impacts and the frequency, to avoid pressure losses during the flow-over from the receiver to the upper chamber, to reduce the machine dimensions by width, and to work in hard-to-reach places. 3 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 630 931 C1 (51) МПК E21B 1/38 (2006.01) E02D 7/02 (2006.01) E21C 37/22 (2006.01) B25D 9/04 (2006.01) B25D 9/06 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ...

Pneumatic shock mechanism

FIELD: construction. SUBSTANCE: shock mechanism consists of a cylindrical body with final channels, circular flange with central through hole, working tool with a shank, step hammer with a rod part, a bar with a rod part, installed in the central hole of the circular flange, permanently based in the central through hole of the step hammer, a circular chamber of a pneumatic buffer (working stroke), a sleeve of the cylindrical body with a hole for the passage of the rod part and forming on the side of the circular chamber of the pneumatic buffer (working stroke) a ring nip, restricting the travel value of the hammer, a nozzle with a channel for feeding air, fixed relatively to the cylindrical body, a circular distributing chamber in the sleeve of the cylindrical body, a network air chamber on the side of the circular flange, idle movement chamber on the side of the shank of the working tool, held by a spring against the cylindrical body. On the lateral surface of the rod part of the bar an inclined flattened channel is made with a curvature surface of higher than the second order, providing changing through passage cross-section, increasing from the full diameter size of the rod part of the bar before it ends on the face of the step hammer, installed in the central through hole. EFFECT: reduction of local airflow resistance at the inlet, reduction of the cycle time, increase in the utilization factor of the internal energy of the air, and the cost-effectiveness of the pneumatic shock mechanism. 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 638 603 C1 (51) МПК E21C 37/22 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2016124274, 17.06.2016 (24) Дата начала отсчета срока действия патента: 17.06.2016 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 17.06.2016 (45) Опубликовано: 14.12.2017 Бюл. № 35 (56) Список документов, цитированных в отчете о поиске: RU 2547194 C2, 10.04. ...

Пневматический молот

А 2016117795 ко РОССИИСКАЯ ФЕДЕРАЦИЯ (19) РЦ (11) э\ а д 5 м 5 < х (02) А х < < х*& $ $ (50) МПК ЕВ 1/2 (2006.01) В25р 9/04 (2006.0Т) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016117795, 05.05.2016 (71) Заявитель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский Приоритет(ы): (22) Дата подачи заявки: 05.05.2016 (43) Дата публикации заявки: 10.11.2017 Бюл. № 31 государственный архитектурно-строительный университет Адрес для переписки: (Сибстрин) (ВО) 630008, г. Новосибирск, ул. Ленинградская, 113, НГАСУ (Сибстрин), отдел ПЛР (72) Автор(ы: Абраменков Дмитрий Эдуардович (КП), Абраменков Эдуард Александрович (КО), Гайдучик Мария Ивановна (КО), Дмитриев Михаил Петрович (КО), Малышев Максим Сергеевич (КП), Чоен Олзийбаяр (КО) (54) Пневматический молот (57) Формула изобретения Пневматический молот включает пневмоударный механизм дроссельно-клапанного типа, содержащий рабочий инструмент с хвостовиком, цилиндрический корпус, стакан с каналом подвода воздуха из сети, закрепленный разъемно относительно корпуса, кольцевой фланец с центральным отверстием, торцевую предкамеру, образованную между стаканом и кольцевым фланцем, размещенный в корпусе ударник со сквозным осевым отверстием и разделяющий полость корпуса на камеры рабочего и холостого ходов, установленный в центральном отверстии кольцевого фланца стержень-трубку, пропущенный через центральное отверстие в стакане и закрепленный относительно самого стакана, выточку в камере холостого хода, радиальный канал выпуска в стержне- трубке с продолжением этого канала в виде осевого продольного канала с выходом в атмосферу и открываемый торцом ударника со стороны хвостовика рабочего инструмента, отличающийся тем, что между стаканом и цилиндрическим корпусом образована кольцевая аккумуляционная камера, кольцевой фланец снабжен боковой стенкой и выполненным в ней радиальным каналом перепуска, постоянно сообщающим торцевую ...

Pneumatic striking mechanism

FIELD: machine engineering. SUBSTANCE: pneumatic striking mechanism includes a cylindrical body with outlet channels, a ring flange with a through central hole, a working tool with a stem, a stepped striker with rod portion installed in the central hole of the ring flange with piston portion with channels-grooves, constantly located in through axial hole of the stepped striker, a controlled circular chamber of the working stroke between inner surface of the cylindrical body and the striker rod portion, a cup fixed relative to the cylindrical body with a channel for supplying air from the network into the chamber of the network air, a circular distributing chamber located from the side of the ring flange in the bushing of cylindrical body with a ring bridge limiting movement of the step striker, an idle stroke chamber from the side of the working tool shank held by the spring relative to the cylindrical body. There is a channel-groove or channel-flat provided on the rod portion of the stepped striker under inclination to its longitudinal axis. The cross section of the channel-groove or channel-flat is widening towards the end of the rod portion of striker with outlet into circular distributing chamber. EFFECT: reduced air back pressure in the working stroke chamber at the end of the idle stroke, increased air pressure at the beginning of the working stroke, thereby impact energy and impact frequency of pneumatic striking mechanism are increased. 1 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 646 271 C2 (51) МПК E21C 37/22 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21C 37/22 (2017.08); B25D 9/04 (2017.08) (21)(22) Заявка: 2016123497, 14.06.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 02.03.2018 (45) Опубликовано: 02.03.2018 Бюл. № 7 R U 2 6 4 6 2 7 1 C 2 Адрес для переписки: 630008, Новосибирск, ул. Ленинградская, 113, НГАСУ (Сибстрин), отдел ПЛР (54) ...

Pneumatic impact mechanism

FIELD: construction; mining. SUBSTANCE: invention relates to construction and mining industry, in particular to pneumatic devices of impact action. Impact mechanism includes the cylindrical body with the discharge channels, the annular flange with the through center opening, the working tool with the shank, the step-type striker with the stem portion, the rod in the central hole of the annular flange with the piston portion, which is permanently located in the through-going axial hole of the step-type striker, the annular chamber of the pneumatic buffer, the sleeve of the cylindrical body with the opening for passage of the rod part forming the annular neck on the side of the annular chamber of the pneumatic buffer limiting the movement amount of the step-type striker, which is fixed with respect to the cylindrical body, the glass with the air supply channel, the annular distribution chamber in the sleeve of the cylindrical body, the chamber of network air from the side of the annular flange, the idling chamber from the side of the tool shank, which is held by the spring relative to the cylindrical body, the screw channel-groove on the lateral surface of the piston part of the rod, which interacts with the through axial hole in the step-type striker. Outer surface of the rod part of the step-type striker and the inner surface of the sleeve of the cylindrical body are made in the form of truncated cones with mating surfaces with the minimum possible clearance excluding mutual jamming. EFFECT: reduced air back pressure in the idling chamber at the end of the working stroke, increased impact energy and the impact frequency of the pneumatic impact mechanism. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 655 492 C1 (51) МПК E21C 37/24 (2006.01) E21B 4/14 (2006.01) E21B 1/30 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК E21C 37/22 (2018.02); E21B 4/06 (2018.02); E21B 11/00 (2018.02); ...

Hydraulic percussion device and construction equipment having the same

The present invention relates to a hydraulic hitting device and construction equipment including the same, wherein the hitting device according to one aspect of the present invention hits an object and includes: a cylinder which receives a piston; a piston which reciprocates in the cylinder; a backward port which connects a front chamber in front of the cylinder to a hydraulic source; a forward and backward valve which controls the forward and backward movement of the piston; a control line which moves the forward and backward valve to a forward position when the hydraulic source is connected thereto; a long stroke port; a short stroke port; a shift valve; a vibration sensor; and a controller. A stroke distance is adjusted according to a hitting condition, and thus the stroke distance is automatically adjusted even when an operator does not separately adjust the stroke distance while breaking a hard rock/soft rock.

Device for pneumatic impact mechanism with throttling air distribution

FIELD: construction; mining industry. SUBSTANCE: invention relates to pneumatic impact devices. Device comprises a cylindrical housing with outlet channels, an annular flange with a through central hole, a cover with an inlet, a working tool with a shank, step striker with rod and piston parts, rod in central hole of annular flange with piston part with inclined channel groove, constantly located in through axial hole of stepped striker, sleeve of cylindrical housing with hole in sleeve, annular neck, limiting the movement value of stepped striker, barrel fixed to cylindrical housing with air supply channel, annular distribution chamber in cylindrical housing bushing, network air chamber between shell and cover, between the cover plate and the annular flange, the idle stroke chamber on the side of the annular flange, the idle stroke chamber on the side of the working tool shank retained by the spring relative to the cylindrical body. Channel-groove on side surface of piston part of rod has variable geometrical cross-section, increasing from the side surface of the piston part from the side of the rod to the end of its piston part from the side of the through axial bore of the stepped drummer. Between the rod part of the stepped impactor and the cylindrical body, on the side of the annular isthmus of the sleeve, an annular controlled working stroke chamber is formed, and on the side surface of the rod part of the stepped striker there is an air bypass channel in the form of a tier of annular cylindrical controlled channel-recesses, separated by bridges along generatrix of stock part of step striker with varying geometrical cross-section area and so that length of tier cylindrical controlled air bypass channel-recesses, separated by bridges, depending on the position of stepped hammer, sufficient for periodic communication of annular distribution chamber and circular controlled chamber of working stroke between each other. EFFECT: higher efficiency of using internal ...

Low - Noise Type Hydraulic Breaker

본 고안은 유압브레이커에 관한 것으로, 하부실린더 선단부 내주면에 삽입홈을 형성하고 상기 삽입홈에 원통형의 흡음재를 부착설치하고 피스톤과 치즐이 서로 접촉하는 부분에 오목홈을 형성하고 상기 오목홈에 특수강으로 제조된 볼을 안착하거나 또는 상기 치즐의 선단면에는 오목부를 상기 치즐과 접촉되는 피스톤의 하단면에는 볼록부를 일체로 형성함으로서 상기 피스톤이 치즐을 타격할때 발생되는 충격 소음 및 진동을 흡수 완충하여 작업 소음을 저감시킬 수 있도록 된 저소음형 유압브레이커에 관한 것으로서, The present invention relates to a hydraulic breaker, the insertion groove is formed in the inner peripheral surface of the lower cylinder end portion, and the cylindrical sound absorbing material is installed and installed in the insertion groove, and the concave groove is formed in the portion where the piston and chisel contact each other, and the concave groove is made of special steel. Work by absorbing and cushioning shock noise and vibration generated when the piston hits the chisel by seating the manufactured ball or by forming a concave portion integrally with the lower end surface of the piston in contact with the chisel. As a low noise type hydraulic breaker that can reduce noise, 상기와 같은 본 고안인 저소음형 유압브레이커의 구체적인 해결적 수단은 [상부 실린더(10)와 하부 실린더(11)가 결합된 실린더(1)와 상기 실린더(1) 내부에 설치되어 유압에 의해 왕복운동을 하는 피스톤(2)과 상기 피스톤(2)에 의해 타격되어 일정한 스트로크로 하강하면서 암석등을 파쇄하는 치즐(3)을 포함한 유압 브레이커에 있어서, The specific solution of the low-noise hydraulic breaker of the present invention as described above is installed in the cylinder (1) and the cylinder (1) to which the upper cylinder (10) and the lower cylinder (11) are coupled and reciprocated by hydraulic pressure. In the hydraulic breaker comprising a piston (2) to be hit by the piston (2) and the chisel (3) to crush the rock and the like while descending in a certain stroke, 상기 하부실린더(11) 선단부 내주면에 삽입홈(110)을 형성하고 상기 삽입홈(110)에 원통형의 흡음재(111)를 부착설치하고 상기 흡음재(111) 양단부에는 판스프링(112)이 구비된 것과, The insertion groove 110 is formed on the inner circumferential surface of the lower cylinder 11 and the cylindrical sound absorbing material 111 is attached to the insertion groove 110, and both ends of the sound absorbing material 111 are provided with leaf springs 112. , 상기 피스톤(2)과 치즐(3)이 ...

Pneumatic hammer

FIELD: instruments. SUBSTANCE: invention relates to a pneumatic hammer. The hammer contains a cylindrical body, a working tool held relative to the cylindrical body, a handle with a body, a partition with an axial hole in which a tube is installed and fixed, an annular exhaust chamber with an outlet formed by a partition, a cylindrical body and a handle body, a pre-chamber formed by a handle body and a partition, and a striker with a through axial channel for omissions of the mentioned tube. The drummer divides the cavity of the cylindrical body into a working stroke chamber on the side of the partition and an idling chamber on the side of the working tool. On the side surface of the striker, a bypass channel is made in the form of a bypass channel-a bald patch having the form of a segment, the same cross-sectional area along the forming surface of the striker and coming out on its side surface and end face from the side of the working stroke chamber. The bypass channel-flat is provided with its continuation in the form of a stepped through drainage channel-flat, having a cross-sectional area smaller than the cross-sectional area of the segment of the bypass channel-flat, and extending to the end of the striker from the side of the idling chamber with the formation of the said channel-flat through stepped channel-flat, constantly communicating the said chambers of the worker and idling between each other. EFFECT: impact energy transferred to the working tool increases. 1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 769 868 C1 (51) МПК B25D 9/04 (2006.01) E21C 37/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B25D 9/04 (2021.02); E21C 37/24 (2021.02) (21)(22) Заявка: 2020132842, 05.10.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 07.04.2022 (45) Опубликовано: 07.04.2022 Бюл. № 10 2 7 6 9 8 6 8 R U (54) Пневматический молот (57) Реферат: Изобретение относится к ...

Low - Noise Type Hydraulic Breaker

본 고안은 유압브레이커에 관한 것으로, 프론트 헤드(Front Head) 선단부 내주면에 다수개의 삽입홈을 형성되어 있고 상기 다수개의 삽입홈에 통형상의 흡음재를 부착설치하고 치즐의 선단부에 위치하는 프론트 헤드 내주면에는 별도의 제1 방음재를 형성하고 그 하단 툴리테이너(Tool Retainer) 부위에는 커버형상의 제2 방음제를 형성하며 상기 프론트 헤드 끝단 내측에 결합되는 로우 부쉬(Lower Bush) 내주면에는 제3 방음제를 형성함으로서 피스톤이 치즐을 타격할때 발생되는 충격 소음 및 진동을 흡수 완충하여 작업 소음을 저감시킬 뿐만 아니라 상기 제3 방음제로 인하여 타격시 치즐 내측으로 유입되는 이물질을 방지할 수 있도록 된 저소음형 유압브레이커에 관한 것으로서, The present invention relates to a hydraulic breaker, which has a plurality of insertion grooves formed on the inner circumferential surface of the front head front end, and a cylindrical sound absorbing material is attached to the plurality of insertion grooves, and the front head inner circumferential surface located on the front end of the chisel By forming a separate first sound insulation material and forming a cover-shaped second sound insulation on the lower tool retainer portion and forming a third sound insulation on an inner circumferential surface of the lower bush coupled to the inside of the front head end. The present invention relates to a low-noise hydraulic breaker that absorbs and cushions shock noise and vibration generated when striking the chisel, thereby reducing work noise and preventing foreign substances from entering the chisel due to the third sound insulation. , 상기와 같은 본 고안인 저소음형 유압브레이커의 구체적인 해결적 수단은 [백헤드(Back Head)(12)와 하방으로 실린더(Cylinder)(10)와 프론트 헤드(Front Head)(11)등이 결합되는 내부로 유압에 의해 왕복운동을 하는 피스톤(2)에 의해 타격되어 일정한 스트로크로 하강하면서 암석, 지반등을 파쇄하는 치즐(3)을 포함한 유압 브레이커(1)에 있어서, Specific solution of the low-noise hydraulic breaker of the present invention as described above [Back Head (12) and the cylinder (Cylinder) 10 and the front head (Front Head) (11) is coupled downwards In the hydraulic breaker (1) including a chisel (3) for crushing rock, ground, etc. while being hit by a piston (2) which reciprocates by hydraulic pressure inside and descending in a constant stroke, 상기 프론트 헤드(11) 선단부 내주면에 형성된 것으로 양끝단부(111)와 중앙부(112)에는 수직으로 형성되어 있고 상기 양끝단부(111)와 중앙부(112) 사이에는 경사지도록 된 ...

The hydraulic hammer of low noise type

유압해머 내부에서 발생된 소음이 외부로 유출되지 않도록 개선한저 소음형 유압해머에 관한 것으로, 유압해머에서 외부로 유출되는 충격음을 줄여 쾌적한 작업 환경을 제공하고 소음에 관한 환경기준을 만족시킬 수 있는 저 소음형 유압해머를 제공하기 위하여, 유압해머 몸체 내부에 설치되어 승강하는 피스톤 하측에서 외부로 유압해머 몸체에 형성된 구멍에 기름이 함유된 원통형 플라스틱 부재를 툴의 주면과 접촉하면서 툴을 안내하도록 설치하였다. It is a low noise type hydraulic hammer that improves the noise generated from the inside of the hydraulic hammer so that it does not leak to the outside, and it provides a pleasant working environment by reducing the impact sound emitted from the hydraulic hammer to the outside and can satisfy the environmental standards regarding noise. In order to provide a low noise hydraulic hammer, a cylindrical plastic member containing oil is placed in the hole formed in the hydraulic hammer body from the lower side of the lifting piston to the outside to lift and guide the tool while contacting the main surface of the tool. It was.

Pneumatic impact mechanism

А 2016123497 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ 1 1) эааа аа аа < а (50) МПК Е21С 37/22 (2006.01) В25р 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016123497, 14.06.2016 (71) Заявитель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования Новосибирский Приоритет(ы): (22) Дата подачи заявки: 14.06.2016 (43) Дата публикации заявки: 19.12.2017 Бюл. № 35 государственный архитектурно-строительный университет Адрес для переписки: (Сибстрин) (ВО) 630008, Новосибирск, ул. Ленинградская, 113, НГАСУ (Сибстрин), отдел ПЛР (72) Автор(ы: Абраменков Эдуард Александрович (КО), Дедов Алексей Сергеевич (КО), Дмитриев Михаил Петрович (КО), Кварцхалая Тимур Рамазович (КП), Степанов Айсен Влиандрович (КО) (54) Пневматический ударный механизм (57) Формула изобретения 1. Пневматический ударный механизм, включающий цилиндрический корпус с выпускными каналами, кольцевой фланец со сквозным центральным отверстием, рабочий инструмент с хвостовиком, ступенчатый ударник со штоковой частью, установленный в центральном отверстии кольцевого фланца стержень с поршневой частью с каналами-пазами, постоянно находящийся в сквозном осевом отверстии ступенчатого ударника, кольцевую камеру рабочего хода между внутренней поверхностью цилиндричекого корпуса и штоковой частью ударника, кольцевой перешеек, ограничивающий величину перемещения ступенчатого ударника, закрепленный относительно цилиндрического корпуса стакан с каналом для подвода воздуха, кольцевую распределительную камеру во втулке цилиндрического корпуса, камеру сетевого воздуха со стороны кольцевого фланца, камеру холостого хода со стороны хвостовика рабочего инструмента, удерживаемого пружиной относительно цилиндрического корпуса, отличающийся тем, что на штоковой части ступенчатого ударника наклонно к его продольной оси выполнен канал-паз с изменяющимся поперечным сечением, увеличивающимся в сторону торца штоковой части ударника с выходом в кольцевую ...

Polishing composition and polishing method

一种在用抛光垫片对抛光对象物抛光中使用的抛光组合物，其特征在于，所述抛光组合物含有10质量％以上、50质量％以下的胶体二氧化硅以及0.5质量％以上、10质量％以下的氢氧化四甲铵或氢氧化钾，不稀释或稀释后使用，基于BET法算出的胶体二氧化硅的平均一次粒径DSA与通过激光衍射法测定的胶体二氧化硅的平均二次粒径DN4满足不等式：DSA≤DN4。胶体二氧化硅的平均二次粒径DN4在30nm以下，其中，当所述的胶体二氧化硅配制成胶体二氧化硅的水分散液以令胶体二氧化硅的含量为20质量％时，该水分散液中的金属杂质的含量是300ppm以下。通过抛光组合物可以控制由抛光垫片阻塞造成的抛光速度的显著下降。

Percussive machine

A compression-vacuum percussion device comprises, mounted in a casing (1), a working instrument (7) and a cylinder (2) with a driven piston (3) and a striker (4) provided with a chamfer (10) on its end-face intended for interaction with the working instrument (7), as well as a striker catch (4) consisting of a tubular element (11) provided with an annular groove (13) in which is mounted an elastic ring (14). The tubular element (11) is provided with an internal annular protrusion (15) whose diameter is smaller than that of the internal wall (12) of the tubular element (11), the annular protrusion (15) being located at the end-face of the tubular element (11), which faces the striker (4). The internal diameter (d) of the elastic ring (14) is smaller than the diameter (D) of the section (9) of the striker (4), which is located behind its chamfer (10).

Apparatus for generating impacts

An apparatus for generating impacts which has a hydraulic cylinder and a reciprocating piston. The hydraulic cylinder has an impact chamber, a cavity which receives and diverts fluid, and a throat which connects the impact chamber with the cavity. When the pressure line is connected to the cavity, the piston is lifted to an upper position. When the overflow line is connected to the cavity, the piston drops down such that the piston enters and covers the throat at the impact chamber. The pressure in the chamber remains low as the chamber is sealed by the piston entering the throat, where the energy loss is insignificant. The piston enters into the throat such that it is stopped and presses against the fluid inside the impact chamber, and thereby generates an impact therein. The piston is lifted up to repeat the cycle, when the cavity is connected to the pressure line. When the fluid inside the chamber is pressed by the piston, the impact is produced in the chamber and the volume of height reduction determines the volume of deceleration and the force of impact. The volume of height reduction is determined by the chamber working capacity. To increase the power of the impact, an inertia mass is attached to the piston.

Vibration generator

피스톤을 확실하게 왕복운동 할 수 있도록 한다. 수압면적이 작은 제1수압실(34)의 압유와, 제1수압실(4)과 수압면적이 큰 제2수압실(5)의 수압면적차에 의하여 왕복운동하는 피스톤(3)을 구비한 실린더부(6)와, 제1압력실(13), 제2압력실(14)의 압력에 의하여 제1위치, 제2위치로 바꿔서 상기한 제2수압실(5)을 유압원과 탱크로 서로 번갈아 연통하는 피스폰(8)을 구비한 변환 밸브(9)와, 상기한 피스톤(3)의 이동에 의하여 변환밸브(9)의 제1압력실(13)을 유압원과 탱크로 연통제어하는 서어보밸브(19)로 구성된 진동발생장치이다.

Hydraulic hammering device

피스톤 전진시에 전실을 저압 회로로 절환하는 방식의 액압식 타격 장치에 있어서, 전실용 라이너와의 접접 개소에서의 피스톤의 "마손"의 발생을 저감시킨다. 전실(2)은, 실린더(10)의 내면에 감합된 전실용 라이너(30)를 가진다. 전실용 라이너(30)의 후부의 내주면에는, 전실(2)과 연통되어 작동유가 채워지는 액실 공간이 쿠션실(3)로서 형성되어 있다. 쿠션실(3)은, 전실용 라이너(30)의 라이너 베어링부를 통과하는 작동유를 저압 회로로 유도하는 드레인 회로와는 별개로 마련된 제2의 드레인 회로(제1 단면홈(46)~슬릿(48)~제2 단면홈(47))를 가진다. In a hydraulic striking device of a system in which the front chamber is switched to a low-pressure circuit when the piston advances, the occurrence of "wear" of the piston at a point in contact with the front chamber liner is reduced. The front chamber 2 has a front chamber liner 30 fitted to the inner surface of the cylinder 10. On the inner circumferential surface of the rear portion of the front chamber liner 30, a liquid chamber space in communication with the front chamber 2 and filled with hydraulic oil is formed as a cushion chamber 3. The cushion chamber 3 has a second drain circuit (first end face groove 46 to slit 48) provided separately from a drain circuit that guides hydraulic oil passing through the liner bearing portion of the front chamber liner 30 to a low pressure circuit. ) ~ Has a second cross-sectional groove (47)).

Device for a pneumatic impact mechanism

FIELD: construction; mining industry. SUBSTANCE: invention relates to pneumatic impact devices. Device for a pneumatic impact mechanism comprises a cylindrical housing with outlet channels, an annular flange with a through central hole, a cover with an inlet opening, a working tool with a shank, step striker with rod and piston parts, rod in central hole of annular flange with piston part with inclined channel-groove, constantly located in the through axial hole of the stepped drummer, the sleeve of the cylindrical body with the hole for the passage of the rod part of the stepped drummer and forming an annular isthmus in the sleeve, limiting the amount of movement of the stepped impactor, fixed with respect to the cylindrical body cup with a channel for supplying air, an annular distribution chamber in the sleeve of the cylindrical body, chamber of network air between shell and cover, prechamber between shell and annular flange, idle stroke chamber on the side of working tool shank, retained by spring relative to cylindrical housing, wherein groove channel on side surface of piston part of rod has variable geometrical cross-section, increasing from the side surface of the piston part from the side of the rod to the end of its piston part from the side of the through axial bore of the stepped drummer. Between ring part of stepped striker and cylindrical housing on the side of annular isthmus of sleeve there is an annular controlled chamber of working stroke. On stepped striker rod part side surface annular air bypass groove is made in the form of truncated cones convergent with peaks along the generatrix of the rod part of the stepped striker with decreasing geometrical cross-section areas in the side of annular distributing chamber and annular controlled chamber of working stroke and so, that the groove channel length is sufficient for periodic air bypass when the annular distribution chamber and the circular controlled chamber of the working stroke are ...

Impact device

FIELD: technological processes. SUBSTANCE: invention relates to method for control of impact device operation, which is actuated by pressurised fluid, and to impact device actuated by pressurised fluid. Impact device comprises facilities for supply of pressurised fluid into impact device and discharge from it, working chamber and transfer piston installed in working chamber. Transfer piston has surface that transmits energy and is inverted to tool with provision of the possibility of its contact with tool surface that perceives energy. At the same time shape of voltage wave is affected by means of clearance setting between surface of transfer piston that perceives energy and specified surface of tool that perceives energy. EFFECT: simplified adjustment of voltage wave characteristics transferred to tool, and also increased frequency of impacts. 28 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 386 527 (13) C2 (51) МПК B25D B25D 9/12 9/26 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007139321/02, 22.03.2006 (24) Дата начала отсчета срока действия патента: 22.03.2006 (73) Патентообладатель(и): САНДВИК МАЙНИНГ ЭНД КОНСТРАКШН ОЙ (FI) (43) Дата публикации заявки: 27.04.2009 2 3 8 6 5 2 7 (45) Опубликовано: 20.04.2010 Бюл. № 11 (56) Список документов, цитированных в отчете о поиске: WO 2005002801 A1, 13.01.2005. SU 1028840 A1, 15.07.1983. RU 2167990 C2, 27.05.2001. SU 1798165 A1, 28.02.1993. SU 694636 A1, 30.10.1979. SU 1293328 A1, 28.02.1987. 2 3 8 6 5 2 7 R U (86) Заявка PCT: FI 2006/050109 (22.03.2006) C 2 C 2 (85) Дата перевода заявки PCT на национальную фазу: 24.10.2007 (87) Публикация PCT: WO 2006/100350 (28.09.2006) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, рег.№ 364 (54) УДАРНОЕ УСТРОЙСТВО (57) Реферат: Изобретение относится к способу управления работой ударного ...

Pulling apparatus of pin

The present invention relates to an apparatus for pulling a pin, comprising: an attractor (10) having a connection portion (11) connected to an end portion of a large pin stuck in a structure at one side, having an accommodation space (12) formed in a longitudinal direction therein, and having a striking space (13) formed at an end portion of the accommodating space (12), communicating with the accommodating space (12) and having a diameter smaller than that of the accommodating space (12); a reciprocal striking device (20) installed within the accommodating space (12) of the attractor (10), having a piston (21) inserted into one side thereof and moving forward and backward upon receiving power from the outside, wherein the piston (21) strikes an end portion of the striking space (13), while moving forward and backward in the striking space (13) upon receiving supplied power; and a buffering device (30) installed within the accommodating space (12) of the attractor (10) and having one side connected to the reciprocal striking device (20) to absorb repulsive force according to a forward and backward movement of the piston (21). According to the present invention, since the reciprocal striking device able to generate striking force such as a hydraulic breaker, or the like, is installed within the attractor (10) fixated to the pin and the attractor (10) connected to the pin is moved in a drawn-out direction through a reciprocal movement of the piston of the reciprocal striking device, the large pin firmly fixated to the structure can be easily drawn out.

PNEUMATIC HAMMER

Пневматический молоток, содержащий цилиндрический корпус, размещенный в нем ударник со сквозным осевым отверстием, разделяющий корпус на камеры рабочего и холостого ходов, крышку с осевой многоканальной трубкой, служащей для выпуска сжатого воздуха в камеру рабочего хода, рабочий инструмент и систему выпускных каналов, периодически сообщающих камеру холостого хода с атмосферой выполненных в трубке и крышке, отличающийся тем, что трубка снабжена перепускным каналом с ярусами радиальных отверстий, образующих переменную площадь сечения, увеличивающуюся в сторону камеры холостого хода с ограничением торцом ударника со стороны камеры рабочего хода и сообщающими камеры рабочего и холостого ходов между собой при длине ударника по отсекающим торцам больше длины до отсекающей кромки выпускного канала трубки со стороны торца ударника, обращенного в камеру рабочего хода, а длина от отсекающей кромки выпускного канала трубки со стороны торца ударника, обращенного в камеру холостого хода, меньше длины до отсекающей кромки выпускного канала со стороны торца ударника, обращенного в камеру рабочего хода, и выполнена по длине не больше длины выпускного канала в трубке, ограниченного отсекающей кромкой торца ударника со стороны камеры рабочего хода. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК B25D 9/04 (13) 2014 104 069 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014104069/02, 05.02.2014 Приоритет(ы): (22) Дата подачи заявки: 05.02.2014 (43) Дата публикации заявки: 10.08.2015 Бюл. № 22 R U (57) Формула изобретения Пневматический молоток, содержащий цилиндрический корпус, размещенный в нем ударник со сквозным осевым отверстием, разделяющий корпус на камеры рабочего и холостого ходов, крышку с осевой многоканальной трубкой, служащей для выпуска сжатого воздуха в камеру рабочего хода, рабочий инструмент и систему выпускных каналов, периодически сообщающих камеру холостого хода с атмосферой выполненных в трубке и крышке, ...

Pile driver with compressed air

본 발명은 압축공기를 이용한 항타기에 관한 것으로, 더욱 자세하게는 케이스(100); 상기 케이스(100)의 내부에 구동수단의 회전력을 전달받아 회전하는 크랭크샤프트(210)와, 상기 크랭크샤프트(210)의 일측과 연결되어 왕복운동을 하는 크랭크로드(220)로 구성되는 구동부(200); 상기 구동부(200)의 하부에 위치되는 실린더(310)와, 상기 실린더(310)의 내부에 구성되되 일측이 크랭크로드(220)와 연결되고 외측에서 하부로 연결되는 압축공기유동홀(325)이 형성되는 피스톤(320)과, 상기 실린더(310)의 내부에 구성되되 상기 피스톤(320)의 외측을 감싸며 고정되는 밀폐커버(350)와, 상기 피스톤(320)의 하부에 구성되는 해머(330)로 구성되는 타격부(300); 로 구성되며, 상기 실린더(310)의 내주와 피스톤(320)의 외주 사이에 제1압축공간(g1)이 형성되고, 상기 피스톤(320)과 해머(330) 사이에 제2압축공간(g2)이 형성됨으로써, 항타 작업을 수행하는 본연의 목적을 그대로 유지함과 동시에 작은 규모로 구성되며 무게를 경량화시킴과 더불어, 구동부의 작동으로 해머가 상하부로 왕복운동을 하되, 보다 많은 양의 압축공기를 형성하며 압축공기의 이동이 원활하게 이루어져 압축공기의 저항을 전혀 받지 않아 타격력을 극대화되어 작업시간 단축 및 편리성이 부여됨과 동시에 항타 작업 시 그 진동을 완화시켜 장치의 내구성을 확보할 수 있는 유용한 발명인 것이다.

Two-piston air hammer

FIELD: machine engineering. SUBSTANCE: device includes a housing with two coaxially located cylindrical cavities separated by a partition with an opening, two pistons located within the cylindrical cavities having cavities of driving and idle strokes, a shank coaxially arranged with the pistons, an air distribution unit with air supply and air discharge channels of equal diameter and a working slide valve in the form of a hollow cylinder, installed in a cylindrical cavity, with the formation of chambers. The housing is equipped with a compressed air supply chamber. One of the pistons is made hollow with a hollow rod, and the second piston is made solid with two solid rods. One of the rods installed in the cavity of the other piston and the opening of the partition between the cylinders. The second rod is mounted coaxially to the first rod on the opposite side of the piston and is provided with a pusher disposed at its end. The rod with the pusher is made of variable cross-section and is installed with a gap with the possibility of moving in the cavity of the working slide valve. The slide valve is provided with a supply and a discharge annular grooves, wherein the supply groove is connected to the compressed air supply chamber and to the cylindrical cavities of the pistons by channels, and the discharge groove is connected to the atmosphere by air discharge channels. The grooves are located at a distance from each other equal to three channel diameters, the width of the grooves is equal to the diameter of the channel, the distance between the channels in the area of the working slide valve is equal to one channel diameter, and the stroke of the working slide valve is equal to two channel diameters. EFFECT: increased operational characteristics and performance reliability. 2 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 630 331 C1 (51) МПК E21B 4/14 (2006.01) E21B 1/24 (2006.01) E21B 1/38 (2006.01) E21C 37/24 (2006.01) B25D 9/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ...

Pneumatic ground piercing tool

Tool e.g. pnuematic hammer for applying smaller impact pulses on surface of workpiece, has punch element that is driven using cooling and/or lubricant circuit which is connected with connection element through hose

The tool has a receving unit which is associated with a cooling and/or lubricant circuit. A punch element (9) is driven using cooling and/or lubricant circuit. A connection element (2) is connected with cooling and/or lubricant circuit through a hose. A piston (8) is axially displaced in a hollow cylinder (7). An independent claim is included for method for applying smaller impact pulses on surface of workpiece.

Pneumatic percussive tool with a short working drive piston

A pneumatic percussive tool for a paving breaker and/or a hammer drill, provided with a drive piston which is axially displaceable both backwards and forwards, comprising a guide sleeve and a piston bottom supporting the guide sleeve. A percussion piston can be displaced axially in the guide sleeve of the drive piston with the piston head thereof in percussive mode. During the transition from percussive to idling mode, the piston head slides out of the guide sleeve in such a way that the percussion piston is substantially maintained in the idling mode in an axially displaceable manner by means of a stationary part of the percussion tool housing as opposed to being so maintained in the guide sleeve. The axial length of the drive piston can be reduced, whereby the mass of the drive piston and vibrations caused by the movement of the drive piston in the percussive and idling mode can also be reduced.

Impact device with transfer member compressing elastic energy absorbing material

FIELD: plastic metal working; impulse impact action devices. SUBSTANCE: proposed device is connected with means for creating stress impulse in tool which include energy accumulation space arranged in impact device housing and limited by housing, and separate transfer member arranged for shifting tool in axial direction relative to housing of impact device. Energy accumulating space is filled up with flexible reversible energy accumulating material. Transfer member is made for arrangement in certain position relative to housing of impact device at preset stressed state of energy accumulating material and for displacement from said position relative to housing of impact device to tool. Means are provided to change over energy accumulating material into stressed state by increasing pressure, and means for sharp release of transfer member to provide its movement to tool. Device is made to provide strong pressing of tool end to transfer member in said position at preset stressed state of energy accumulating material either directly or through separate transfer part and deliver stresses in form of impulse wave trough transfer member to tool at sharp removal of stressed state of energy accumulating material. EFFECT: improved efficiency of operation owing to increased frequency of stroke impacts. 24 cl, 8 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 321 486 (13) C2 (51) ÌÏÊ B25D 9/04 (2006.01) E21C 31/00 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004135818/02, 07.05.2003 (30) Êîíâåíöèîííûé ïðèîðèòåò: 08.05.2002 FI 20020881 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÀÍÄÂÈÊ ÒÀÌÐÎÊ ÎÉ (FI) (43) Äàòà ïóáëèêàöèè çà âêè: 27.05.2005 R U (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 07.05.2003 (72) Àâòîð(û): ÊÅÑÊÈÍÈÂÀ Ìàðêêó (FI), ÀÕÎËÀ Ýðêêè (FI), ÊÎÒÀËÀ Àðè (FI) (45) Îïóáëèêîâàíî: 10.04.2008 Áþë. ¹ 10 2 3 2 1 4 8 6 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: SU 1789683 A1, 23.01.1993 ...

For the device that rock and concrete are processed

本发明涉及一种用于在岩石和/或混凝土切割设备中应用的液压敲击工具，其包括具有气缸（115、215）的机器壳体（100、200）和可动安装活塞（145、245），可动安装活塞在操作期间执行相对于机器壳体（100、200）的重复的前后运动并且直接或间接地敲击岩石和/或混凝土切割工具（155、255），其中活塞（145、245）包括将形成在活塞（145、245）与机器壳体（100、200）之间的第一驱动腔（120、220）和第二驱动腔（105、221）分隔开的驱动部分（165、265），以及这些驱动腔布置成在操作期间包括加压工作流体。第一和第二驱动腔的总容积V与用于敲击工具的推荐最大压力p的平方成反比，以及与对着工具敲击期间的活塞能量E和工作流体的压缩模量β的乘积成正比，其比例常数k在5.3-21.0的区间内。