PORTABLE PNEUMATIC PILE DRIVER

The present invention relates to a portable pneumatic pile driver. The portable pneumatic pile driver provides a continuous strong driving force by preventing a loss in driving force caused by the air suction pressure applied in a section where a direction of a piston is switched to a top dead point, and prevents damage to a piston sealing ring and an inner wall of a cylinder by preventing foreign materials from flowing into the cylinder through an improvement of an intake structure of the piston. The portable pneumatic pile driver comprises: a cylinder (10), a pneumatic piston (20), a weight piston (30), and an intake hole (40). COPYRIGHT KIPO 2016 ...

액압식 타격장치

... 타격에너지를 유지하면서, 피스톤 스트로크를 쇼트 스트로크화하여 타격출력을 증대한다. 이 액압식 타격장치는, 실린더(100)와, 실린더(100)의 내부에 접감된 피스톤(200)과, 피스톤(200)의 외주면과 실린더(100)의 내주면과의 사이에 획성되어 축방향의 전후에 이격배치된 피스톤 전실(110) 및 피스톤 후실(111)과, 피스톤 전실(110) 및 피스톤 후실(111)의 적어도 한쪽을, 고압회로(101) 및 저압회로(102)의 적어도 한쪽으로 절환하여 피스톤(200)을 구동하는 절환밸브기구(130)와, 피스톤(200)의 후방에 마련되어, 피스톤(200)의 후퇴공정 중에서 피스톤(200)에 제동력이 작용하는 타이밍에서 피스톤(200)에 맞닿아 피스톤(200)을 전방으로 부세하는 부세수단으로서의 증속 피스톤(410)을 구비한다.

압축공기를 이용한 항타기

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.

Hydraulic Hammering Device

A hydraulic hammering device includes a piston front chamber and a piston rear chamber defined between an outer circumferential surface of the piston and an inner circumferential surface of the cylinder and disposed separately from each other at front and rear, respectively, in an axial direction. A switching-valve mechanism drives the piston by switching at least one of the piston front chamber and the piston rear chamber into communication with at least one of a high pressure circuit and a low pressure circuit. An acceleration piston is disposed behind the piston and is configured to come into contact with the piston during a retreat stroke thereof to urge the piston forward, in which a timing where the acceleration piston itself starts to come in contact with the piston is set to be earlier than a timing where the piston is braked by the switching-valve mechanism.

DRIVING PILE MACHINE USING COMPRESSED AIR

The present invention relates to a driving pile machine using compressed air. More particularly, the present invention comprises: a case (100); a crankshaft (210) rotating by the rotational force of a driving unit inside of the case (100); a driving member (200) including a crank rod (220), connected to one side of the crankshaft (210), practicing back-and-forth movement; a cylinder (310) arranged at a lower part of the driving member (200); a piston (320), whose one end is connected to the crank rod (220) while being arranged inside of the cylinder (310) and forming a compressed air guiding hole (325) connected to a lower side from an outer part; a sealing cover (350), inside of the cylinder (310), fixated while covering the outer part of the piston (320); and a hitting member (300) containing a hammer (330) arranged at a lower part of the piston (320). The present invention can achieve the purpose of performing pile driving work, by forming a first compress space (g1) between the outer ...

TOOL FOR COMBINING LOCK PIN

The present invention relates to a tool (1000) for combining a lock pin. The tool includes: a blow cylinder (200) which includes a connection unit (210) to one end and the other end of which a hydraulic or pneumatic pressure from a hydraulic cylinder (100) flows in and a storage unit (220) connected to the connection unit (210); a moving member (310) which is stored in the storage unit (220) of the blow cylinder (200) and moves by the hydraulic or pneumatic pressure; a blow hammer (300) which is combined with the moving member (310), moves together with the moving member (310) and blows a lock pin; and a return unit which provides a restoring force to restore the moving member (310) moved by the hydraulic or pneumatic pressure in the storage unit (220) to the original position before the movement. COPYRIGHT KIPO 2016 ...

Hydraulic hammering device

Hammering power of a hydraulic hammering device is improved by shortening a piston stroke, while keeping hammering energy. The device includes a cylinder, a piston slidingly fitted in the cylinder, and a piston front chamber and a piston rear chamber defined between an outer circumferential surface of the piston and an inner circumferential surface of the cylinder and disposed separately from each other at front and rear, respectively, in an axial direction. The device also includes a switching-valve mechanism driving the piston by switching at least one of the piston front or rear chamber into communication with at least one of a high pressure circuit or a low pressure circuit, and an acceleration piston disposed behind the piston and coming in contact with the piston during a retreat stroke of the piston to urge the piston forward in cooperation with braking force by pressurized oil acting on the piston.

Hydraulic impact mechanism for use in equipment for treating rock and concrete

A hydraulic impact mechanism, of the valveless impact mechanism type, comprising a pre-charged gas accumulator connected to a working chamber in order to make possible impact mechanisms for equipment for rock drilling and hydraulic breakers that is lighter, cheaper and more sustainable from the point of view of material fatigue. Furthermore, a gas accumulator of piston type with an integral brake chamber ( 240, 250, 360 ) and a piston ( 220, 320 ) designed to fit into the said brake chamber ( 240, 250, 360 ).

SURGE ACCUMULATOR FOR HYDRAULIC HAMMER

A hydraulic hammer is disclosed that includes at least one accumulator that is connectable to a hydraulic circuit disposed in the housing of the hammer. The accumulator includes an annular base coupled to a cover with a diaphragm sandwiched therebetween. The annular base includes a proximal end and a distal end. The proximal end of the annular base defines a first central opening. The proximal end of the base in the housing define an annular inlet that encircles the first central opening and that is in communication with the first central opening. The cover also includes a proximal end and a distal end. The proximal end of the cover is coupled to the distal end of the base with the outer periphery of the diaphragm sandwiched therebetween. 1. An accumulator that is connectable to a hydraulic circuit disposed in a housing , the accumulator comprising:an annular base including a proximal end and a distal end, the proximal end of the base defining a first central opening, the proximal end of the base and the housing defining an annular inlet that encircles the first central opening and that is in communication with the first central opening;a diaphragm having an outer periphery;a cover including a proximal end and a distal end, the proximal end of the cover coupled to the distal end of the base with the outer periphery of the diaphragm sandwiched therebetween.2. The accumulator of wherein the distal end of the base includes a first annular projection claim 1 , the proximal end of the cover includes a second annular projection claim 1 , the first and second annular projections being directed at one another and sandwiching the outer periphery of the diaphragm therebetween.3. The accumulator of wherein the cover is connected to the housing with by at least one fastener and the base is sandwiched between the cover and the housing.4. The accumulator of wherein the distal end of the cover includes a gas inlet port for receiving pressurized liquid.5. The accumulator of wherein ...

ROTARY-PERCUSSIVE HYDRAULIC PERFORATOR PROVIDED WITH A CONTROL CHAMBER PERMANENTLY CONNECTED TO A LOW-PRESSURE ACCUMULATOR

The rotary percussive hydraulic perforator comprises a body; a fitting; a striking piston configured to strike the fitting; a stop piston including a front face facing the fitting and a rear face situated opposite to a rear wall of a cavity receiving the piston stop; and a main hydraulic supply circuit including a high pressure fluid supply conduit and a low pressure fluid return conduit. The body and the stop piston delimit a first control chamber permanently connected to the high pressure fluid supply conduit and configured to bias the stop piston forwards, and a second control chamber configured to bias the stop piston forwards and permanently connected to a low pressure accumulator connected to the low pressure fluid return conduit. 1. A rotary percussive hydraulic perforator comprising:a body,a fitting intended to be coupled to at least one drilling bar equipped with a tool,a striking piston slidably mounted inside the body along a striking axis and configured to strike the fitting,a stop piston which is slidably mounted in a cavity of the body along an axis of displacement substantially parallel to the striking axis, the stop piston including a front face facing the fitting and intended to position the fitting in a predetermined equilibrium position with respect to the striking piston, and a rear face opposite to the face front and situated opposite to a rear wall of the cavity, anda main hydraulic supply circuit configured to control an alternating sliding of the striking piston along the striking axis and to control a sliding of the stop piston along the displacement axis, the main hydraulic supply circuit including a high pressure fluid supply conduit and a low pressure fluid return conduit,the body and the stop piston delimiting at least partially a first control chamber permanently connected to the high pressure fluid supply conduit and configured to bias the stop piston forwards, the rotary percussive hydraulic perforator further comprising a connecting ...

HYDRAULIC HAMMERING DEVICE

A hydraulic hammering device that uses a scheme in which a front chamber is switched into communication with a low-pressure circuit when a piston advances, wherein occurrences of “galling” to the piston at a sliding contact portion with a front-chamber liner is reduced. The front chamber has the front-chamber liner fitted to an inner surface of a cylinder. A hydraulic chamber space communicating with the front chamber and filled with hydraulic oil is formed as a cushion chamber on the inner peripheral surface of a rear portion of the front-chamber liner. The cushion chamber has a second drain circuit (from first end face grooves to slits to second end face grooves, which is provided separately from a drain circuit that guides the hydraulic fluid passing through a liner bearing of the front-chamber liner to the low-pressure circuit. 1. A hydraulic hammering device comprising:a piston slidably fitted into a cylinder, the piston being configured to advance and retract to hammer a rod for hammering;a front chamber and a rear chamber that are defined between an outer peripheral surface of the piston and an inner peripheral surface of the cylinder and arranged separated from each other in the front and rear direction; anda switching valve mechanism configured to switch the front chamber into communication with a low pressure circuit when the piston advances and to supply and discharge hydraulic oil so that an advance and a retraction of the piston can be repeated,wherein the front chamber has a front-chamber liner that is fitted to an inner surface of the cylinder,a hydraulic chamber space is formed to the front-chamber liner as a cushion chamber, the hydraulic chamber space communicating with the front chamber to be filled with hydraulic oil, andthe cushion chamber has a second drain circuit that is formed separately from a drain circuit configured to guide hydraulic oil passing a liner bearing section of the front-chamber liner to the low pressure circuit and that ...

Automatic Lubrication System with Detune

Lubrication system includes a drive fluid valve member and a detune valve member. The drive fluid valve member is movable from a first to a second position in response to drive fluid pressure to reduce the volume of a variable volume lubricant charge chamber. The detune valve member is movable from a first to a second position in response to lubricant pressure within the lubricant charge chamber, and is adapted to permit fluid communication between inlet and bypass fluid passages in its the first position and to disengage the fluid connection in its second position.

Accumulator

An apparatus including an accumulator and a drive mechanism. The accumulator includes an energy storage apparatus with a first piston face configured to reversibly compress an energy storage medium and a second piston face forming at least part of an inner surface of a corresponding second fluid chamber reversibly expandable by movement of the second piston face. A third piston face forms at least part of an inner surface of a corresponding third fluid chamber reversibly expandable by the third piston face. The first, second and third piston faces are coupled together

PNEUMATIC HAMMER

A pneumatic hammer has a handle, a body, a valve seat, a cylinder device, an assembling device, and a chisel. The body is transversally connected to the handle and has a chamber. The valve seat is mounted in the chamber of the body and has a rear valve, a front valve, and a valve plate disposed between the rear valve and the front valve. The cylinder device is mounted in the chamber, abuts against the valve seat, and has a cylinder barrel and a hammer. The cylinder barrel is mounted in the chamber and has a cylinder chamber. The hammer is movably disposed in the cylinder chamber. The assembling device is connected to the cylinder device, and has a mounting jacket, an engaging element, multiple positioning elements, a spring, and an engaging ring. The chisel is detachably connected to the assembling device, and is inserted into the cylinder chamber. 1. A pneumatic hammer comprising:a handle having a top; a closed end;', 'an open end opposite to the closed end of the body;', 'an external surface; and', 'a chamber formed in the body between the closed end and the open end of the body and communicating with the open end of the body;, 'a body transversally connected to the top of the handle, communicating with the handle, and having'} a rear valve;', 'a front valve connected to the rear valve; and', 'a valve plate mounted between the rear valve and the front valve;, 'a valve seat mounted in the chamber of the body adjacent to the closed end of the body and having'} a cylinder barrel mounted in the chamber via the open end of the body, abutting against the valve seat, and having a cylinder chamber axially formed in the cylinder barrel and communicating with the valve seat; and', 'a hammer axially and movably mounted in the cylinder chamber of the cylinder barrel;, 'a cylinder device mounted in the chamber of the body via the open end of the body, abutting against the valve seat, and having'} [ a rear end;', 'a front end;', 'an internal surface;', 'an assembling chamber ...

HYDRAULIC HAMMER HAVING CO-AXIAL ACCUMULATOR AND PISTON

A hydraulic hammer is disclosed having a piston and an accumulator membrane disposed external and co-axial to the piston. Additionally, a sleeve is disposed between the piston and accumulator membrane, wherein the sleeve has a plurality of radial passages formed therein that fluidly connect the accumulator membrane with the piston. 1. A method of operating a hydraulic hammer , comprising:receiving pressurized fluid at an inlet;directing the pressurized fluid axially into an accumulator membrane;redirecting the pressurized fluid radially inward from the accumulator membrane toward a piston; andbiasing the piston upward with the pressurized fluid.2. The method of claim 1 , further including selectively blocking and passing pressurized fluid to a valve with movement of the piston.3. The method of claim 2 , further including:directing the pressurized fluid axially away from a tip of the piston to the valve; andbiasing the valve upward with the pressurized fluid.4. The method of claim 3 , further including selectively directing the pressurized fluid into a fluid chamber located axially adjacent to the valve.5. The method of claim 4 , further including biasing the piston downward claim 4 , away from the valve claim 4 , with the pressurized fluid in the fluid chamber.6. The method of claim 5 , wherein biasing the piston upward increases gas pressure within a gas chamber located axially adjacent to the fluid chamber.7. The method of claim 6 , further including biasing the piston downward and away from the valve with the pressurized gas in the gas chamber.8. The method of claim 7 , further including directing the pressurized fluid from the fluid chamber radially outward and through a plurality of outlet apertures located between the annular groove and gas chamber. This is a divisional of application Ser. No. 13/837,969, filed Mar. 15, 2013, which is incorporated herein by reference.The present disclosure is directed to a hydraulic hammer and, more particularly, to a ...

HYDRAULIC ROTARY-PERCUSSIVE HAMMER DRILL PROVIDED WITH A STOP PISTON

The hydraulic rotary-percussive hammer drill includes a body; a shank; a striking piston configured to hit the shank; a stop piston configured to position the shank in a predetermined balanced position, the body and the stop piston delimiting a first control chamber permanently connected to a high-pressure fluid feed-in conduit and configured to urge the stop piston forwards, and a second control chamber configured to urge the stop piston forwards. The hydraulic rotary-percussive hammer drill comprises a fluidic communication channel opening into the second control chamber, configured to supply the second control chamber with high-pressure fluid and provided with a calibrated orifice. 1. A hydraulic rotary-percussive hammer drill , comprising:a body;a shank intended to be coupled to at least one drill bar equipped with a tool;a striking piston slidably mounted inside the body along a striking axis and configured to hit the shank;a stop piston which is slidably mounted in a cavity of the body according to an axis of displacement substantially parallel to the striking axis, the stop piston including a front face facing the shank and configured to position the shank in a predetermined balanced position with respect to the striking piston, and a rear face opposite to the front face and located opposite a rear wall of the cavity; anda high-pressure fluid feed-in conduit and a low-pressure fluid return conduitthe body and the stop piston delimiting at least partially a first control chamber permanently connected to the high-pressure fluid feed-in conduit and configured to urge the stop piston forwards, the hydraulic rotary-percussive hammer drill further comprising a connecting channel configured to fluidly connect the first control chamber to the low-pressure fluid return conduit when the rear face of the stop piston is located at a distance from the rear wall of the cavity which is larger than a predetermined value,wherein the body and the stop piston further delimiting ...

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 ...

Pressure indicator for hydraulic hammer

A pressure indicator for a hydraulic hammer is provided. The pressure indicator includes a sleeve member configured to couple to an opening defined in a wall housing of an accumulator of the hydraulic hammer. The pressure indicator further includes a plunger slidably disposed within the sleeve member and movable between a first position and a second position with respect to the sleeve member. The plunger includes a first end disposed outside the wall housing of the accumulator. The plunger further includes a flange coupled to a second end. The pressure indicator further includes an elastic member inserted over the plunger and disposed between the wall housing of the accumulator and the flange. A position of the first end of the plunger with reference to an outer end of the sleeve member provides a visual indication of the pressure of the gas within the accumulator.

Accumulator membrane for a hydraulic hammer

An accumulator membrane is disclosed. The accumulator membrane may include a generally cylindrical tube having a side wall with a first end a second end. A lip may be located at the first end, and may form a pocket with the side wall. An extension may protrude from the second end at an angle generally perpendicular to the lip and co-axial with the generally cylindrical tube.

Hydraulic Striking Device

Provided is a hydraulic striking device in which a reverse operation circuit and a forward operation circuit can switch connection states to a high pressure circuit and a low pressure circuit by means of an operation switching valve. Further, the hydraulic striking device is configured to be selectable between a reverse operation mode or a forward operation mode by operating the operation switching valve. A high/low pressure switching portion is provided with a shortening portion for reducing the time required for high/low pressure switching operation in piston front and rear chambers in association with retraction of a valve to be shorter than the time required for high/low pressure switching operation in the piston front and rear chambers in association with advancement of the valve.

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 ...

PERCUSSION APPARATUS

This percussion apparatus includes a striking piston, a control distributor arranged to control a reciprocating movement of the striking piston, and a control device arranged to vary the striking stroke of the striking piston. The control device comprises a plurality of control channels, a control channel connected to the control distributor, a control slide movably mounted between a plurality of control positions, and an adjusting slide mounted in a receiving housing delimited by the control slide, the control slide and the adjusting slide delimiting a first adjusting chamber connected to the control channel and a second adjusting chamber connected to a the high-pressure fluid supply circuit. The control slide is movably mounted between a first position in which the first control chamber and the second adjusting chamber are connected and a second position in which the first control chamber and the second adjusting chamber are isolated. 1. A percussion apparatus , including:a body delimiting a piston cylinder,a striking piston alternately movable inside the piston cylinder, and arranged to strike a tool during each operating cycle of the percussion apparatus,a control distributor arranged to control a reciprocating movement of the striking piston inside the piston cylinder reciprocally along a striking stroke and a return stroke, a control cylinder,', 'a plurality of control channels each opening into the control cylinder, each control channel also opening into the piston cylinder and being adapted to be put in communication with a high-pressure fluid supply circuit during at least one part of the reciprocating movement of the striking piston,', 'a control channel connected to the control distributor and opening into the control cylinder,', 'a control slide movably mounted in the control cylinder between a plurality of control positions in each of which the control slide is configured to fluidly connect the control channel with at least one of the control channels ...

Slagverktyg.

控制阀、撞击装置以及用于控制撞击装置的工作循环的方法

本发明涉及一种控制阀、撞击装置以及用于控制撞击装置的工作循环的方法。用于破碎岩石的撞击装置(1)包括冲击元件(8)，其利用控制阀(2)进行控制。该控制阀包括控制元件(5)，该控制元件设置为控制通向冲击元件(8)的工作压力表面(9)的通道(7b)。控制元件向其极限位置的运动设置为形成关闭的压力空间，其中压力介质压缩并且将控制元件的动能转化成压能。当控制元件改变其方向时该压能再次转化成动能并且加以利用。

液压式冲击装置

本发明提供一种提升冲击效率且低成本的液压式冲击装置。活塞(200)在其大径部具有阀切换槽(205)，缸体(100)在与阀切换槽(205)相对应的位置具有3个控制口(112、113、114)，切换阀机构(210)具有始终对阀(300)朝向一个方向施力的阀施力部件和在供给压力油时克服阀施力部件的作用力而使阀(300)向相反方向移动的阀控制部件。阀控制口(114)以能够向阀控制部件供给压力油的方式与该阀控制部件连通，并且与活塞前室(110)、后室(111)相互隔绝，活塞后退控制口(113)和活塞前进控制口(112)通过与阀切换槽(205)的前后移动相应地只有任一个口与阀控制口(114)连通。

Hammering device, controlled with pressure fluid

FIELD: mining. ^ SUBSTANCE: invention refers to hammering devices. The device consists of a case, of a tool installed in the case and designed to perform length travels relative to the case, of means for pressure fluid supply into the device and for pressure fluid withdrawing to a tank of pressure fluid, of means for generation of a mechanical surge in the tool by means of applying pressure of fluid, and of a transmitting piston. A charging pressure chamber is assembled from the side of the transmitting piston facing the tool; and a working pressurising chamber is assembled from the back side of the transmitting piston. Means for generating a mechanical surge contain a source of pressure fluid connected with the working pressurising chamber and designed to maintain pressure in the working pressurising chamber; they also contain facilities for intermittent supply of pressure fluid into the charging pressure chamber. The facilities for intermittent supply of pressure fluid into the charging pressure chamber facilitate travel of the transmitting piston in the direction to the working pressurising chamber and alternately facilitate quick discharge of pressure fluid from the charging pressure chamber. Also, created by pressure of compressed pressure fluid in the working pressurising chamber and by working fluid, flowing into the said chamber from the source of pressure fluid, force facilitates travel of the transmitting piston in the direction of the tool. ^ EFFECT: increased frequency of impacts of device. ^ 7 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 353 508 (13) C2 (51) МПК B25D 9/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2006133905/02, 22.02.2005 (24) Дата начала отсчета срока действия патента: 22.02.2005 (45) Опубликовано: 27.04.2009 Бюл. № 12 (56) Список документов, цитированных в отчете о поиске: WO 03004822 A1, 16.01.2003. SU 1028840 A1, 15.07.1983. RU ...

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 ...

液压式冲击装置

一种液压式冲击装置，在不变更油压回路配置并且维持冲击能量的同时，使活塞冲程短冲程化来增大冲击输出。所述液压式冲击装置具备：活塞前室(110)和活塞后室(111)，划分在活塞(200)的外周面和气缸(100)的内周面之间，并沿轴向的前后隔开配置；切换阀机构(130)，将活塞前室(110)和活塞后室(111)中的至少一方切换至高压回路(101)和低压回路(102)中的至少一方而驱动活塞；以及增速活塞(410)，设置于活塞后方，在其后退行程的中途抵接于活塞而对活塞(200)向前方施力，增速活塞(410)被设定为自身于活塞开始抵接的定时比活塞(200)通过切换阀机构(130)受到制动的定时早。

Control valve in a percussion device and a method comprising a closed pressure space at the end position of the piston

본 발명은 제어밸브, 충격장치 및 충격장치의 작동 사이클의 제어방법에 관한 것이다. 암반 파쇄용 충격장치 (1) 는 제어밸브 (2) 의해 제어되는 충격부재 (8) 를 포함한다. 제어밸브는 충격부재 (8) 의 작동압력면 (9) 으로 이어진 채널 (7b) 을 제어하도록 배치된 제어부재 (5) 를 포함한다. 말단 위치로의 제어부재의 이동이 폐쇄된 압력 공간부를 형성하도록 배치되고, 이 공간부에서 압력매체가 압축되어 제어부재의 운동에너지를 압력에너지로 전환시킨다. 압력에너지는 제어부재의 방향이 바뀔 때 운동에너지로 재전환되어 이용된다. The present invention relates to a control valve, a shock device and a control method of an operating cycle of the shock device. The rock fracture impact device 1 includes an impact member 8 controlled by a control valve 2. The control valve comprises a control member 5 arranged to control the channel 7b leading to the working pressure surface 9 of the impact member 8. The movement of the control member to the distal position is arranged to form a closed pressure space, in which the pressure medium is compressed to convert the kinetic energy of the control material into pressure energy. The pressure energy is converted into kinetic energy and used when the direction of the control member changes. 충격장치, 제어밸브, 제어방법. Impact device, control valve, control method.

충격 장치

충격 장치(2)는, 타격 피스톤(5), 타격 피스톤(5)의 왕복 운동을 제어하는 제어 분배기(11), 및 타격 피스톤(5)의 타격 행정을 변화시키는 제어 장치(15)를 포함한다. 이 제어 장치(15)는, 복수의 제 1 제어 채널(18a, 18b, 18c), 제어 분배기(11)에 연결되는 제 2 제어 채널(19), 복수의 제어 위치 사이에서 움직일 수 있게 장착되는 제어 슬라이드(16), 및 이 제어 슬라이드에 의해 형성된 수용 하우징 안에 장착되는 조절 슬라이드(34)를 포함하고, 제어 슬라이드(16)와 조절 슬라이드(34)는, 제 2 제어 채널(19)에 연결되어 있는 제 1 조절 챔버(36), 및 고압 유체 공급 회로(12)에 연결되어 있는 제 2 조절 챔버(37)를 형성한다. 제어 슬라이드(34)는, 제 1 조절 챔버(36)와 제 2 조절 챔버(37)가 서로 연결되는 제 1 위치와, 제 1 조절 챔버(36)와 제 2 조절 챔버(37)가 서로 격리되는 제 2 위치 사이에서 움직일 수 있게 장착된다.

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) ...

Air-distributing device of impact-action pneumatic machines

The portable compressed-air impact tool has a striker piston reciprocating in a housing to form working chambers of variable volume. The housing has a distributor chamber connected to the working chambers and to the compressed air supply in turn by a valve working in it. The valve (22) is a cylindrical sleeve, enclosing one or more openings (32) with its inner surface, through which the air is delivered to the distributor chamber (19). This opening leads to one or more lengthwise channels (29) formed in the valve, permanently connected to the compressed air supply, and delivering to the working chamber inlet passages (25, 26).

Hydraulic Breaker

본 발명은 유압 브레이커에 관한 것으로, 실린더와, 피스톤과, 치즐과, 백헤드와, 실린더 부쉬, 및 밸브를 포함한다. 밸브는 실린더 부쉬의 내측면과 실린더 내경부에 상하 방향으로 이동 가능하게 설치된다. 밸브는 상단면에 실린더 상실의 압력이 작용하는 밸브 상측부와, 하단면에 실린더 상실의 압력이 작용하는 밸브 하측부와, 밸브 상측부와 밸브 하측부 사이에서 밸브 상측부와 밸브 하측부보다 큰 외경으로 확장되어 제1 상측 밸브 수압면이 제1,2 유로와 연통되는 제1 밸브 확경부와, 제1 밸브 확경부와 밸브 하측부 사이에서 제1 밸브 확경부보다 큰 외경으로 확장되어 제2 상측 밸브 수압면이 제4 유로와 연통되고 제1 상측 밸브 수압면보다 넓은 면적의 하측 밸브 수압면에 밸브 전환실의 압력이 작용하는 제2 밸브 확경부를 포함한다.

Impact device with rotary control valve

FIELD: mechanics. SUBSTANCE: proposed impact device incorporates casing whereto tool can be attached along with load-bearing element arranged between the aforesaid casing and tool and held by the said casing. It also comprises working fluid chamber and said fluid feed and discharge appliances. The impact device comprises a rotary control valve furnished with control channels designed to intermittently direct working fluid from the said working fluid chamber into return channel. EFFECT: ease of control. 24 cl, 8 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 341 373 (13) C2 (51) ÌÏÊ B30B 1/32 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2005129340/02, 23.02.2004 (72) Àâòîð(û): ÊÅÑÊÈÍÈÂÀ Ìàðêêó (FI), ÌÝÊÈ Éîðìà (FI), ÝÑÊÎ Ìàóðè (FI), ÀÕÎËÀ Ýðêêè (FI) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 23.02.2004 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 21.02.2003 FI 20030261 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÀÍÄÂÈÊ ÒÀÌÐÎÊ ÎÉ (FI) (43) Äàòà ïóáëèêàöèè çà âêè: 10.03.2006 (45) Îïóáëèêîâàíî: 20.12.2008 Áþë. ¹ 35 2 3 4 1 3 7 3 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: WO 03/004822 À1, 01.07.2002. DE 2206014, 02.08.1973. SU 1009807 A, 07.04.1983. RU 2050221 C1, 20.12.1995. DE 2206014, 02.08.1973. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 21.09.2005 2 3 4 1 3 7 3 R U (87) Ïóáëèêàöè PCT: WO 2004/073933 (02.09.2004) C 2 C 2 (86) Çà âêà PCT: FI 2004/000082 (23.02.2004) Àäðåñ äë ïåðåïèñêè: 129090, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòðîåíèå 3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Ñ.À.Äîðîôååâó, ðåã.¹ 146 (54) ÓÄÀÐÍÎÅ ÓÑÒÐÎÉÑÒÂÎ Ñ ÂÐÀÙÀÞÙÈÌÑß ÊËÀÏÀÍÎÌ ÓÏÐÀÂËÅÍÈß (57) Ðåôåðàò: Óäàðíîå óñòðîéñòâî ñ âðàùàþùèìñ êëàïàíîì óïðàâëåíè îòíîñèòñ ê ìàøèíîñòðîåíèþ. Óäàðíîå óñòðîéñòâî ñîäåðæèò êîðïóñ, ê êîòîðîìó ìîæåò ïðèñîåäèí òüñ èíñòðóìåíò è ðàñïîëîæåííûé ìåæäó êîðïóñîì è èíñòðóìåíòîì íàïð ãàåìûé ýëåìåíò, óäåðæèâàåìûé êîðïóñîì óäàðíîãî óñòðîéñòâà, è ïîëîñòü äë ðàáî÷åé æèäêîñòè, è ...

Impact tool operated by pressure fluid

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Control valve, impactor and method of impactor operation cycle control

FIELD: technological processes. SUBSTANCE: control valve for impactor operation cycle control includes a case with an area, at least two high-pressure medium channels connected to the case area, control element, at least first high-pressure working area and at least second high-pressure working area. Control element is mounted in the case area and can move forth and back in the first and second directions, and is intended for closing and opening high-pressure medium channels. Control element can move from middle position to the first extreme position in the first direction. Second high-pressure working area is formed on the condition of closed high-pressure area forming, and therefore, by control element movement from middle position to the second extreme position in the second direction. First high-pressure working area is formed on the condition of closed high-pressure area forming. EFFECT: simplified control valve construction and impactor operation cycle control. 18 cl, 6 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 334 610 (13) C2 (51) ÌÏÊ B25D 9/16 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2005129334/02, 23.02.2004 (72) Àâòîð(û): ÊÎÑÊÈÌßÊÈ Àíòòè (FI), ÊÅÑÊÈÍÈÂÀ Ìàðêêó (FI), ÌßÊÈ Éîðìà (FI), ÀÕÎËÀ Ýðêêè (FI) (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 23.02.2004 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÀÍÄÂÈÊ ÒÀÌÐÎÊ ÎÉ (FI) (43) Äàòà ïóáëèêàöèè çà âêè: 10.02.2006 R U (30) Êîíâåíöèîííûé ïðèîðèòåò: 21.02.2003 FI 20030263 (45) Îïóáëèêîâàíî: 27.09.2008 Áþë. ¹ 27 2 3 3 4 6 1 0 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: RU 2167990 C2, 27.05.2001. SU 1293328 A1, 28.02.1987. SU 212915 A1, 01.01.1968. SU 519535 A1, 30.06.1976. US 3425498 A, 04.02.1969. EP 0578623 A1, 12.01.1994. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 21.09.2005 2 3 3 4 6 1 0 R U (87) Ïóáëèêàöè PCT: WO 2004/073930 A1 (02.09.2004) C 2 C 2 (86) Çà âêà PCT: FI 2004/000079 (23.02.2004) Àäðåñ äë ...

Hydraulic impact device

本发明提供一种能够维持冲击能量，并且使活塞冲程短冲程化从而增大冲击输出的液压式冲击装置。该液压式冲击装置包括：缸体(100)；活塞(200)，滑动嵌合于缸体(100)内部；活塞前室(110)和活塞后室(111)，被划分在活塞(200)的外周面与缸体(100)的内周面之间，并隔开配置在轴向的前后；切换阀机构(130)，将活塞前室(110)和活塞后室(111)的至少一方切换成高压回路(101)和低压回路(102)的至少一方来驱动活塞(200)；以及作为施力单元的加速活塞(410)，设置于活塞(200)的后方，并在活塞(200)的后退工序中，在将制动力作用于活塞(200)的定时，抵接于活塞(200)来对活塞(200)向前方施力。

Arrangement in connection with a hydraulically operated impact device, such as a breaking apparatus

본 발명은 파쇄 장치 따위의 유압식 충격 장치로서, 충격 피스톤(2)과, 충격 장치의 안팎으로 압력유를 이송하기 위한 수단과, 축압기로 구성된 유압식 충격 장치에 관한 것이다. 본 발명에 따라, 축압기는 충격 피스톤(2)을 둘러싸는 환상 공간으로서 형성된다. 축압기는 프레임(5)과 슬리브(9) 사이에 배열된 슬리브형 다이어프램(11)에 의해 분리되는 슬리브형 압력실(6a, 6b)로 이루어진다. 압력실(6a, 6b)은 프레임의 둘레에 배치된 슬리브(9)의 내주 및 프레임(5)의 외주에 상호 대향하는 리세스가 제공될 수 있도록 형성된다.

Control valve and method for an impact device having an operating cycle including a plurality of coupling moments

Control valve and a method for a percussion device with a working cycle involving several coupling moments

本发明涉及一种控制阀、撞击装置以及用于控制撞击装置的工作循环的方法。用于破碎岩石的撞击装置(1)包括冲击元件(8)，其利用控制阀(2)进行控制。该控制阀包括控制元件(5)，该控制元件设置为控制通向冲击元件(8)的工作压力表面(9)的通道(7b)。在控制阀的工作循环期间，该控制元件设置为在多个连接瞬间打开和关闭压力通道，从而在阀的一个工作循环期间，设置为能够产生多个冲击脉冲。

PNEUMATIC HAMMER

Hydraulic striking device

Impactor operated by fluid

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)).

Control valve and control method for percussion device with working cycle including a number of connection points

Группа изобретений относится к ударным устройствам для разрушения горных пород, а именно к регулирующему клапану ударного устройства, ударному устройству и способу регулирования рабочего цикла ударного устройства. Технической задачей является увеличение частоты ударов ударного устройства. Достигается тем, что ударное устройство для разрушения горной породы содержит ударный элемент, управляемый регулирующим клапаном, содержащим регулирующий элемент, приспособленный для регулирования каналов, ведущих к рабочей напорной поверхности ударного элемента, при этом рабочий цикл регулирующего клапана содержит несколько моментов соединения для того, чтобы открывать и закрывать каналы для рабочей среды под давлением, создавая в ударном устройстве несколько ударных импульсов за один рабочий цикл регулирующего клапана. 3 н. и 22 з.п. ф-лы, 9 ил. ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 304 217 (13) C2 (51) ÌÏÊ E21C 37/00 (2006.01) E21B 1/26 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2005129335/03, 23.02.2004 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 23.02.2004 (30) Êîíâåíöèîííûé ïðèîðèòåò: 21.02.2003 (ïï.1-25) FI 20030263 (43) Äàòà ïóáëèêàöèè çà âêè: 27.03.2006 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÀÍÄÂÈÊ ÒÀÌÐÎÊ ÎÉ (FI) (45) Îïóáëèêîâàíî: 10.08.2007 Áþë. ¹ 22 2 3 0 4 2 1 7 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: RU 2104148 C1, 10.02.1998. SU 337506 A, 05.05.1972. SU 673193 À, 05.07.1979. SU 683894 À, 05.09.0979. SU 810952 À, 07.03.0981. RU 2027937 C1, 27.01.1995. RU 2042812 C1, 27.08.1995. RU 2095566 C1, 10.11.1997. RU 2107817 C1, 27.03.1998. RU 2117759 C1, 20.08.1998. SE 373774 C, 17.02.1975. 2 3 0 4 2 1 7 R U C 2 C 2 (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 21.09.2005 (86) Çà âêà PCT: FI 2004/000081 (23.02.2004) (87) Ïóáëèêàöè PCT: WO 2004/073932 (02.09.2004) Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è ...

Percussion device

hydraulic strike device

압유회로배치를 변경하지 않으며, 또한 타격에너지를 유지하면서 피스톤 스트로크를 쇼트 스트로크화하여 타격출력을 증대한다. 이 액압식 타격장치는, 피스톤(200)의 외주면과 실린더(100)의 내주면과의 사이에 구획되어 축방향의 전후로 이격 배치된 피스톤전실(110) 및 피스톤후실(111)과, 피스톤전실(110) 및 피스톤후실(111)의 적어도 한쪽을, 고압회로(101) 및 저압회로(102)의 적어도 한쪽으로 절환하여 피스톤을 구동하는 절환밸브기구(130)와, 피스톤후방에 마련되어 피스톤에 그 후퇴행정의 도중에서 맞닿아 피스톤(200)을 전방으로 부세하는 증속피스톤(410)을 구비하고, 증속피스톤(410)은 자신과 피스톤이 맞닿음을 개시하는 타이밍이, 피스톤(200)이 절환밸브기구(130)에 의해 제동을 받는 타이밍보다도 빠르게 설정되어 있다. The pressure oil circuit arrangement is not changed, and the striking power is increased by shortening the piston stroke while maintaining the striking energy. This hydraulic striking device is partitioned between the outer circumferential surface of the piston 200 and the inner circumferential surface of the cylinder 100 , the front and rear piston chamber 110 and the rear piston chamber 111 spaced apart in the axial direction, and the front piston chamber 110 ) and a switching valve mechanism 130 for driving the piston by switching at least one of the high-pressure circuit 101 and the low-pressure circuit 102 to at least one of the rear piston chamber 111, and a retracting stroke provided at the rear of the piston It has a speed-up piston 410 that abuts on the way and urges the piston 200 forward, and the speed-up piston 410 has a timing for starting contact between itself and the piston, and the piston 200 is a selector valve mechanism ( 130) is set earlier than the timing of receiving the brake.

Accumulator

一种液压蓄压器包括具有第一活塞面和第二活塞面的能量存储设备，第一活塞面被配置为可逆压缩能量存储介质，第二活塞面形成相应第二流体室的至少部分内表面，第二流体室通过第二活塞面的运动实现可逆扩容。第三活塞面形成相应第三流体室的至少部分内表面，第三流体室通过第三活塞面实现可逆扩容。第一、第二以及第三活塞面被连接到一起。

Hydraulic hammer with impact system sub-component

本发明公开了一种用于液压锤(20)的冲击系统(70)。所述冲击系统包括活塞(80)、与该活塞同轴布置的套筒(100)，以及布置在所述套筒外部的蓄能器膜(90)。第一密封件(137)位于所述套筒的端部，并配置成将所述套筒连接至所述活塞；所述蓄能器膜具有配置成接合所述套筒中凹部(109)的延伸部(97)。

HYDRAULIC PERCUSSION DEVICE

Portable, pneumatic percussive tool - has tubular type slide valve connecting air supply channels to return and work chambers

The pneumatic stroke machine comprises a housing (1) in which is a stroke mechanism (2) connected to a tool. The mechanism divides the housing into two chambers, a return chamber (8) and a work chamber (10). These are alternately joined to air supply channels (11) via a slide valve (4) and a valve (6) which moves axially close to the end surface of the work chamber. The slide valve (4) has the form of a sleeve with a base, the base being in the shape of a flattened cone and turned to the side opposite the stroke mechanism. Valve (6) is mounted in the sleeve so that a chamber (14) is formed. The valve body is equipped with a choke channel (5) connected to chamber (14).

PERCUSSION APPARATUS

Hydraulic impact device

"HYDRAULIC IMPACT DEVICE" Inventor - Edgar J. Justus ABSTRACT OF THE DISCLOSURE A hydraulic impact device in which a hammer member having a piston portion is reciprocally disposed in a cylinder, a reciprocating sleeve valve is disposed within the cylinder and surrounds the hammer member. The sleeve valve has a first peripheral seal with an upper portion of the cylinder and a second peripheral seal with the lower portion of the cylinder so that an annular cavity is formed between the first and the second peripheral seals. The bottom portion of the sleeve valve forms a single seal with the upper portion of the piston section. A pressure relief valve is situated between the inlet to said annular cavity and an annular cavity below the piston portion to insure that the pressure in said annular cavity is greater than the pressure in the cavity below the piston portion and the sleeve valve thus effecting a sealing force between the sleeve valve and the upper face of the piston portion. An energy storage means is provided for receiving energy from said ram member during its upward stroke. The upper and lower sealing portions of said sleeve valve are axially spaced such that when said lower sealing portion seals a fluid inlet port, the upper sealing portion opens a fluid outlet port thereby reducing the pressure in said annular cavity by interrupting a fluid communication between the inlet port and said annular cavity and establishing fluid communication between the outlet port and said annular cavity.

PNEUMATIC ASSEMBLY FOR DESSAVING FOUNDRY CORES

Percussion device with automatic regulation of the supply pressure of the percussion device

Cet appareil à percussions (2) comprend un corps (3) délimitant un cylindre de piston (4) ; un piston de frappe (5) monté déplaçable de façon alternative à l’intérieur du cylindre de piston (4), le piston de frappe (4) et le cylindre de piston (4) délimitant une première chambre de commande (8) reliée en permanence à un circuit d’alimentation en fluide haute pression (12) de l’appareil à percussions (2) et une deuxième chambre de commande (9) qui est antagoniste à la première chambre de commande (8) ; et un distributeur de commande (11) configuré pour commander un mouvement alternatif du piston de frappe (5) à l’intérieur du cylindre de piston (4) alternativement suivant une course de frappe et une course de retour, le distributeur de commande (11) étant configuré pour relier la deuxième chambre de commande (9) alternativement au circuit d’alimentation en fluide haute pression (12) et à un circuit de retour de fluide basse pression (13) de l’appareil à percussions (2). Le distributeur de commande (11) est en outre configuré pour réguler automatiquement la pression d’alimentation de l’appareil à percussions (2) à une valeur de pression prédéterminée. Figure 3 This percussion device (2) comprises a body (3) defining a piston cylinder (4); a striking piston (5) mounted so as to move in an alternating manner inside the piston cylinder (4), the striking piston (4) and the piston cylinder (4) defining a first control chamber (8) connected in permanently to a high pressure fluid supply circuit (12) of the percussion apparatus (2) and a second control chamber (9) which is antagonistic to the first control chamber (8); and a control valve (11) configured to control reciprocating movement of the strike piston (5) within the piston cylinder (4) alternately along a strike stroke and a return stroke, the control valve (11) ) being configured to connect the second control chamber (9) alternately to the high pressure fluid supply circuit (12) and to a low pressure fluid return ...

PERCUSSION TOOL

HYDRAULIC MECHANICAL HAMMER

LE MARTEAU HYDRAULIQUE DE LA PRESENTE INVENTION COMPREND UN CORPS PRINCIPAL 1, UN OUTIL 4, UNE VALVE D'ETRANGLEMENT 1A, UN PISTON 9 PORTANT CONTRE L'OUTIL 4, UNE CHAMBRE 13 D'ACCUMULATION DE PRESSION PNEUMATIQUE, UNE CHAMBRE D'HUILE ANNULAIRE 10, UN PASSAGE D'HUILE ANNULAIRE 17, UNE VALVE-TIROIR 19, UNE CHAMBRE DE VALVE 15, UNE CHAMBRE D'ECHAPPEMENT D'HUILE 14, UNE CHAMBRE 16 D'HUILE HAUTE PRESSION, UNE SAILLIE 21 ET DES PASSAGES D'HUILE 18, L'AGENCEMENT ETANT TEL QUE LE MARTEAU SELON LA PRESENTE INVENTION NE PRODUIT PAS DE VIBRATIONS, PEUT FONCTIONNER A DES CADENCES EXTREMEMENT ELEVEES AVEC UNE FORCE D'IMPACT PUISSANTE ET REGLABLE. APPLICATIONS: MARTEAUX-PIQUEURS, MOUTONS POUR ENFONCER DES PIEUX, OUTILS DE CONCASSAGE, OUTILS POUR POSER DES RIVETS, DAMES, MACHINE A CLOUER, DAMIES, ETC. THE HYDRAULIC HAMMER OF THE PRESENT INVENTION INCLUDES A MAIN BODY 1, A TOOL 4, A THROTTLE VALVE 1A, A PISTON 9 BEARING AGAINST THE TOOL 4, A PNEUMATIC PRESSURE ACCUMULATION CHAMBER 13, AN ANNULAR OIL CHAMBER 10, AN ANNULAR OIL PASSAGE 17, A DRAWER VALVE 19, A VALVE CHAMBER 15, AN OIL EXHAUST CHAMBER 14, A HIGH PRESSURE OIL CHAMBER 16, A PROOF 21 AND OIL PASSAGES 18, THE ARRANGEMENT BEING SUCH THAT THE HAMMER ACCORDING TO THE PRESENT INVENTION DOES NOT PRODUCE VIBRATIONS, CAN OPERATE AT EXTREMELY HIGH RATES WITH A POWERFUL AND ADJUSTABLE IMPACT FORCE. APPLICATIONS: HAMMERS, SHEEP FOR DRIVING PILES, CRUSHING TOOLS, TOOLS FOR SETTING RIVETS, LAMPS, NAILING MACHINES, DAMIES, ETC.

PERCUSSION TOOL

Outil à percussion. Il comporte un cylindre 1, une gaine 2 montée sur celui-ci, un piston 5 monté dans la gaine de manière à effectuer un mouvement de va-et-vient sous l'effet d'un gaz et d'une pression hydraulique, et une soupape tubulaire 7, montée de façon coulissante sur la gaine pour commander un circuit hydraulique ; la soupape est relevée et abaissée hydrauliquement sans l'aide d'un ressort et il n'y a pas d'accumulateur de gaz. Application à un excavateur. Percussion tool. It comprises a cylinder 1, a sheath 2 mounted thereon, a piston 5 mounted in the sheath so as to perform a reciprocating movement under the effect of gas and hydraulic pressure, and a tubular valve 7, slidably mounted on the sheath to control a hydraulic circuit; the valve is hydraulically raised and lowered without the aid of a spring and there is no gas accumulator. Application to an excavator.

Hydraulic oscillator with valve movement control - has piston communicating between channel and chamber pocket when piston moves to end of displacement in one direction

In a hydraulic oscillator having a piston and valve element both movable in opposite directions and both disposed in a chamber in which hydraulic pressure is switched in opposite senses between supply and return pressures, appts. for controlling the movement of the valve element comprises (a) means in the chamber defining a pocket for receiving the valve element when it moves in one of the directions and has switched the fluid pressure in the chamber in one of the opposite senses so as to develop forces on the piston in the direction opposite to the one direction, (b) channel means operative when in communication with the pocket for, providing a path, for the flow of hydraulic fluid from the pocket when the valve element is received therein, and (c) means in the piston for providing communication between the channel means and the pocket when the piston has moved to a position near the end of its displacement in one direction. The displacement of the valve in one direction, and the period of time for the valve element to switch the fluid pressure in the chamber in the other of the opposite senses, so as to again enable the development of forces on the piston in the one direction, is controllable as a function of the flow through the channel means.

Patent FR2375959B1

Patent FR534790A

ROTO-PERCUTANT HYDRAULIC PERFORATOR PROVIDED WITH A CONTROL CHAMBER PERMANENTLY CONNECTED TO A LOW PRESSURE ACCUMULATOR

Le perforateur hydraulique roto-percutant (2) comprend un corps (3) ; un emmanchement (15) ; un piston de frappe (5) configuré pour frapper l'emmanchement (15) ; un piston de butée (13) comportant une face avant (18) tournée vers l'emmanchement (15) et une face arrière (19) située en regard d'une paroi arrière (21) d'une cavité (14) recevant le piston de butée ; et un circuit principal d'alimentation hydraulique comportant un conduit d'alimentation en fluide à haute pression (9) et un conduit de retour de fluide à basse pression (11). Le corps (3) et le piston de butée (13) délimitent une première chambre de commande (22) reliée de façon permanente au conduit d'alimentation en fluide à haute pression (9) et configurée pour solliciter le piston de butée (13) vers l'avant, et une deuxième chambre de commande (25) configurée pour solliciter le piston de butée (13) vers l'avant et reliée en permanence à un accumulateur basse pression (26) relié au conduit de retour de fluide à basse pression (11). The rotary percussive hydraulic perforator (2) comprises a body (3); a fitting (15); a striking piston (5) configured to strike the fitting (15); a stop piston (13) comprising a front face (18) facing the fitting (15) and a rear face (19) situated opposite a rear wall (21) of a cavity (14) receiving the piston stop; and a main hydraulic supply circuit comprising a high pressure fluid supply duct (9) and a low pressure fluid return duct (11). The body (3) and the stop piston (13) define a first control chamber (22) permanently connected to the high-pressure fluid supply duct (9) and configured to urge the stop piston (13) forward, and a second control chamber (25) configured to urge the stop piston (13) forward and permanently connected to a low pressure accumulator (26) connected to the low pressure fluid return duct (11).

PNEUMATIC ASSEMBLY FOR DESSAVING FOUNDRY CORES

Patent FR2328547B1

PNEUMATIC ASSEMBLY FOR DESSAVING FOUNDRY CORES

L'invention concerne un dispositif de dessablage des noyaux de fonderie, comprenant :- un fût (1) comportant des premiers moyens (20) d'arrivée d'air comprimé et des moyens (25) d'évacuation d'air pulsé ;- un cylindre d'approche (3) coulissant dans le fût sous l'action de l'air comprimé, entre une position rétractée et une position de travail où une bouterolle (5) est en contact avec une pièce de travail ; et- des moyens de frappe (50) pour imprimer des chocs répétés sur la bouterolle.Ce dispositif comprend:- des moyens d'obturation (219) desdits moyens d'évacuation d'air, lesdits moyens d'obturation étant aptes à inhiber lesdits moyens de frappe pendant la course du cylindre d'approche de sa position rétractée à sa position de travail ; et- des moyens de temporisation (225) pour ouvrir lesdits moyens d'obturation à l'issue d'un délai prédéterminé après l'occurrence d'un événement déterminé. The invention relates to a grinding device for casting cores, comprising: - a barrel (1) comprising first compressed air supply means (20) and means (25) for discharging pulsed air; an approach cylinder (3) sliding in the drum under the action of the compressed air, between a retracted position and a working position where a rivet (5) is in contact with a work piece; and- striking means (50) for printing repeated shocks on the rivet.This device comprises: - means for closing (219) said air evacuation means, said closure means being able to inhibit said striking means during the stroke of the approach cylinder from its retracted position to its working position; and timing means (225) for opening said shutter means at the end of a predetermined time after occurrence of a given event.

Pneumatic tool

Pneumatic hammer for riveting, chiselling, etc.

Improvements to pressurized fluid tools

PNEUMATIC ASSEMBLY FOR DESSAVING FOUNDRY CORES

L'invention concerne un dispositif de dessablage des noyaux de fonderie, comprenant :- un fût (1) comportant des premiers moyens (20) d'arrivée d'air comprimé et des moyens (25) d'évacuation d'air pulsé;- un cylindre d'approche (3) coulissant dans le fût sous l'action de l'air comprimé, entre une position rétractée et une position de travail où une bouterolle (5) est en contact avec une pièce de travail ; et- des moyens de frappe (50) pour imprimer des chocs répétés sur la bouterolle.Ce dispositif comprend des moyens de soufflage (29) pour créer un rideau d'air autour du cylindre d'approche au niveau de l'emplacement où il pénètre dans le corps. The invention relates to a grinding device for casting cores, comprising: - a barrel (1) comprising first compressed air supply means (20) and means (25) for discharging pulsed air; an approach cylinder (3) sliding in the drum under the action of the compressed air, between a retracted position and a working position where a rivet (5) is in contact with a work piece; and- striking means (50) for printing repeated impacts on the rivet.The device comprises blowing means (29) for creating an air curtain around the approach cylinder at the location where it penetrates. in the body.

Patent FR2310195B3

Distribution for pneumatic tools

HYDRAULIC DEMOLISING MATERIAL

L'INVENTION CONCERNE UN MARTEAU DEMOLISSEUR HYDRAULIQUE. LE MARTEAU SELON L'INVENTION COMPREND UN CORPS AYANT UNE CHAMBRE AXIALE FORMEE DE PLUSIEURS SECTIONS CYLINDRIQUES 14, 20, 13 DANS LESQUELLES COULISSE UNE MASSE DE PERCUSSION 15 COMPORTANT DEUX ELEMENTS CYLINDRIQUES SOLIDAIRES DE DIAMETRES DIFFERENTS, L'ELEMENT SUPERIEUR 14 PRESENTANT UNE RAINURE ANNULAIRE 18 TANDIS QUE L'ELEMENT INFERIEUR PORTE UNE BAGUE ANNULAIRE 11 DU TYPE A PISTON. DANS UNE SECTION MEDIANE 20 DE LA CHAMBRE AXIALE EST LOGEE UNE SOUPAPE A TIROIR 19 POUR L'HUILE CONTROLANT LES DIFFERENTES PHASES DE FONCTIONNEMENT. A L'INTERIEUR DU MARTEAU SONT MENAGEES PLUSIEURS CONDUITES D'HUILE 35, 33, 34, 37, 39 POUR METTRE EN COMMUNICATION UN RESERVOIR 21 AVEC LES SECTIONS DE LA CHAMBRE AXIALE, OU CES DERNIERES ENTRE ELLES. LE MARTEAU EST DOTE EN OUTRE D'UN DISPOSITIF 24 DE REGLAGE DE LA FREQUENCE DE CHOC. CES CARACTERISTIQUES ASSURENT QUE LA PERCUSSION N'A LIEU QUE LORSQUE LE FORET EST PRESSE CONTRE LA SURFACE A DEMOLIR, D'OU IL RESULTE UNE FATIGUE MOINDRE DE L'OPERATEUR AINSI QU'UNE USURE MOINDRE DES PIECES CONSTITUTIVES. THE INVENTION RELATES TO A HYDRAULIC DEMOLISHER HAMMER. THE HAMMER ACCORDING TO THE INVENTION INCLUDES A BODY HAVING AN AXIAL CHAMBER SHAPED BY SEVERAL CYLINDRICAL SECTIONS 14, 20, 13 IN WHICH SLIDES A PERCUSSION MASS 15 INCLUDING TWO SOLIDAR CYLINDRICAL ELEMENTS OF DIFFERENT DIAMETERS, THE UPPER 18 RAIN ELEMENT 14 PRESENTING AN ANNUAL WHILE THE LOWER ELEMENT CARRIES AN ANNULAR RING 11 OF THE PISTON TYPE. IN A MIDDLE SECTION 20 OF THE AXIAL CHAMBER IS A DRAWER VALVE 19 FOR THE OIL CONTROLLING THE DIFFERENT PHASES OF OPERATION. INSIDE THE HAMMER ARE PROVIDED SEVERAL OIL DUCTS 35, 33, 34, 37, 39 TO COMMUNICATE A TANK 21 WITH THE SECTIONS OF THE AXIAL CHAMBER, OR THE LATEST BETWEEN THEM. THE HAMMER IS ALSO EQUIPPED WITH A DEVICE 24 FOR ADJUSTING THE SHOCK FREQUENCY. THESE CHARACTERISTICS ENSURE THAT PERCUSSION ONLY TAKES PLACE WHEN THE DRILL ...

Valve timing for compressed air tools, hammer drills, etc.

Patent FR559236A

Pneumatically controlled percussion machine

Hydraulic roto-percussion drill equipped with a stop piston and a braking chamber

Le perforateur hydraulique roto-percutant (2) comprend un corps (3) ; un emmanchement (21) ; un piston de frappe (5) configuré pour frapper l’emmanchement (21) et pourvu d’une une surface de freinage ; une chambre de freinage (15) configurée pour freiner hydrauliquement le piston de frappe (5) ; un piston de butée (17) configuré pour appliquer une force de poussée sur l’emmanchement (21) et pourvu d’une surface d’appui configurée pour venir en butée contre une surface de butée prévue sur le corps (3), de manière à limiter la course de déplacement du piston de butée (17) vers l’emmanchement (21). Le perforateur hydraulique roto-percutant (2) est configuré de telle sorte que la surface d’appui et la surface de butée sont espacées axialement d’une distance d’espacement prédéterminée lorsque simultanément (i) l’emmanchement (21) est en appui sur le piston de butée (17) et est en contact avec le piston de frappe (5), et (ii) la surface de freinage est située au niveau d’une arête d’entrée de la chambre de freinage (15). Figure 1 The rotary hammer drill (2) includes a body (3); a fitting (21); a striking piston (5) configured to strike the socket (21) and provided with a braking surface; a braking chamber (15) configured to hydraulically brake the striking piston (5); an abutment piston (17) configured to apply a thrust force to the fitting (21) and provided with a bearing surface configured to abut against an abutment surface provided on the body (3), so to limit the stroke of movement of the stop piston (17) towards the fitting (21). The roto-percussive hydraulic drill (2) is configured such that the support surface and the abutment surface are spaced axially by a predetermined spacing distance when simultaneously (i) the fitting (21) is in support on the stop piston (17) and is in contact with the impact piston (5), and (ii) the braking surface is located at an entry edge of the braking chamber (15). Figure 1

Rock drill percussion mechanism

A rock drill with a percussion mechanism which includes a piston (32), a body (12) in which is formed a chamber (14), at least a first cylinder (18) which is located in the chamber and which, on an inner side, forms at least part of a sleeve for the piston (32), and a valve (22), for controlling movement of the piston, which is located on an outer side of the first cylinder (18). Stop means (142) integrally attached to the first cylinder prevents the valve from being removed.

Hydraulic hammering device

타격 효율을 향상시키면서도 저 코스트인 액압식 타격 장치를 제공한다. 피스톤(200)은 대경부에 밸브 전환홈(205)을 가지고, 실린더(100)는 밸브 전환홈(205)에 대응하는 위치에, 3 개의 제어 포트(112, 113, 114)를 가지고, 전환 밸브 기구(210)는, 밸브(300)를 일방향으로 상시 부세하는 밸브 부세 수단과, 압유 공급시에 밸브 부세 수단의 부세력에 항거하여 밸브(300)를 반대 방향으로 이동시키는 밸브 제어 수단을 가진다. 밸브 제어 포트(114)는, 밸브 제어 수단에 압유를 공급 가능하게 연통되는 동시에 피스톤 전실(110)·후실(111)과는 서로 격절되고, 피스톤 후퇴 제어 포트(113) 및 피스톤 전진 제어 포트(112)는, 밸브 전환홈(205)의 전후 이동에 따라서 어느 한 쪽의 포트에 한하여 밸브 제어 포트(114)와 연통한다. It provides a low-cost hydraulic striking device while improving striking efficiency. The piston 200 has a valve switching groove 205 in a large diameter portion, and the cylinder 100 has three control ports 112, 113, 114 at a position corresponding to the valve switching groove 205, and a switching valve The mechanism 210 includes a valve biasing means for constantly biasing the valve 300 in one direction, and a valve control means for moving the valve 300 in the opposite direction against the biasing force of the valve biasing means when supplying pressure oil. The valve control port 114 communicates so as to be able to supply hydraulic oil to the valve control means, and is separated from the piston front chamber 110 and the rear chamber 111, and the piston retraction control port 113 and the piston advance control port 112 ) Communicates with the valve control port 114 only to one of the ports according to the movement of the valve switching groove 205 back and forth.

Fluid powered striking mechanism

Pressure-fluid-operated percussion device

The invention relates to a pressure-fluid-operated percussion de­vice comprising a frame (2) allowing a tool (13) to be arranged therein movably in its longitudinal direction, means for feeding pressure liquid to the percussion device (1) and for returning pressure liquid to a pressure liquid tank, and means for producing a stress pulse in the tool by utilizing pressure of the pres­sure liquid. The invention includes a pressure liquid source for maintaining pressure in the working pressure chamber (3), and means for intermittently feeding pressure liquid to the percussion device (1) such that the pressure liq­uid pushes a transmission piston into a predetermined backward position such that pressure liquid is discharged from the working pressure chamber (3), and for alternately allowing pressure liquid to be discharged rapidly from the per­cussion device (1) so that the pressure of the pressure liquid in the working pressure chamber (3) and pressure liquid flowing thereto from the pressure liquid source pushes the transmission piston (4) towards the tool (13), thus generating a stress pulse in the tool (13).

Valve for rock drills

Improvements to pneumatic hand hammers and similar tools

Rock percussion mechanism

Actuator for a hydraulic impact device

A linear actuator includes a ram and a piston separated by a column of hydraulic fluid in a housing. Upward movement of the ram in the housing first seals a finite quantity of hydraulic fluid in the housing cavity. Continued upward ram movement then causes the piston, and hydraulic fluid beneath it, to move upwardly into a sealed gas chamber to compress a gas and create a source of potential energy. Release of the force moving the ram upwardly permits the compressed gas above the piston to expel the hydraulic fluid from the chamber against the ram thereby converting the potential energy in the compressed gas into kinetic energy in the ram. The hydraulic fluid bears directly against the ram to provide the working stroke of the impact device without the effect of metal fatigue from direct contact between the piston and ram.

Strike movement device

(57)【要約】 （修正有） 【課題】 ピストンとシリンダとの間にバルブを設けて 打撃力を極大化し、部品数及び重量を最小化する。 【解決手段】 シリンダとピストン１３０との間に挿入 設置したバルブ１４０を備え、バルブはバルブ下端面及 びバルブ上端面からなり、複数個の段部を含み、長手方 向に形成されるピストン孔と、複数個の孔と、バルブの 一部の外周面に各々形成される前方の外周面及び後方の 外周面を有する環状突起体を備え、シリンダはバルブの 外側に装着され、ピストンを往復運動させるために形成 した複数個のシリンダ孔を備え、リアカバー１２０を備 える。

Hydraulic hammering device

本发明提供一种提升冲击效率且低成本的液压式冲击装置。活塞(200)在其大径部具有阀切换槽(205)，缸体(100)在与阀切换槽(205)相对应的位置具有3个控制口(112、113、114)，切换阀机构(210)具有始终对阀(300)朝向一个方向施力的阀施力部件和在供给压力油时克服阀施力部件的作用力而使阀(300)向相反方向移动的阀控制部件。阀控制口(114)以能够向阀控制部件供给压力油的方式与该阀控制部件连通，并且与活塞前室(110)、后室(111)相互隔绝，活塞后退控制口(113)和活塞前进控制口(112)通过与阀切换槽(205)的前后移动相应地只有任一个口与阀控制口(114)连通。

Perforation valve improvements

PNEUMATIC ASSEMBLY FOR DESSAVING FOUNDRY CORES

L'invention concerne un dispositif de dessablage des noyaux de fonderie, comprenant :- un fût (1) comportant des premiers moyens (20) d'arrivée d'air comprimé et des moyens (25) d'évacuation d'air pulsé ;- un cylindre d'approche (3) coulissant dans le fût sous l'action de l'air comprimé, entre une position rétractée et une position de travail où une bouterolle (5) est en contact avec une pièce de travail ; et- des moyens de frappe (50) pour imprimer des chocs répétés sur la bouterolle.Ce dispositif comprend:- des moyens de détection (36, 38) pour détecter la présence d'une pression d'alimentation en air comprimé supérieure à un seuil prédéterminé lorsque le cylindre d'approche est dans sa position rétractée et qu'une bouterolle est montée sur le cylindre d'approche; et- des moyens d'inhibition (225) pour inhiber lesdits moyens d'arrivée d'air lorsque la pression d'alimentation n'est pas détectée. The invention relates to a grinding device for casting cores, comprising: - a barrel (1) comprising first compressed air supply means (20) and means (25) for discharging pulsed air; an approach cylinder (3) sliding in the drum under the action of the compressed air, between a retracted position and a working position where a rivet (5) is in contact with a work piece; and- striking means (50) for printing repeated shocks on the rivet.The device comprises: - detection means (36, 38) for detecting the presence of a compressed air supply pressure greater than a threshold predetermined when the approach cylinder is in its retracted position and a rivet is mounted on the approach cylinder; and inhibiting means (225) for inhibiting said air supply means when the supply pressure is not detected.

PNEUMATIC ASSEMBLY FOR DESSAVING FOUNDRY CORES

Percussion movement apparatus

In order to maximize percussion force and reduce the number of components and weight by installing a valve between a piston and a cylinder, the invention provides a percussion movement apparatus which comprises a valve installed between the piston and the cylinder, the valve being constructed to open/close a flow path and organically cooperate with the piston by predetermined movements thereof, the valve having substantially cylindrical overall shape whose both end surfaces which is upper and lower end surfaces thereof with different cross sectional areas, and also the valve including a longitudinal piston hole with multistage sills, a plurality of holes extending rectangularly to the piston hole for communicating the piston hole with exterior, and an annular projection with front and rear peripheral surfaces partially formed on a peripheral surface of the valve, the cylinder being mounted the outside of the valve and including a plurality of cylinder holes for reciprocating the piston; and a rear cover mounted on the rear of the valve and the cylinder, the piston, the cylinder and the valve having a plurality of chambers and a valve switching chamber defined by making a difference in diameter along a longitudinal direction for providing predetermined annular chambers between inner and outer peripheral surfaces thereof into which the fluid can be introduced, and the cylinder including a cylinder block formed with a plurality of fluid passages for inflow/discharge of a working oil.

Rock drill

Rock drilling machine and axial bearing

本发明涉及止推轴承和设有止推轴承的凿岩机。该止推轴承(100)包括第一活塞(20)和第二活塞(21)。活塞(20，21)之间的轴向接触面(60，43a)布置在相同压力空间(28)内。进给到止推轴承的相同加压流体作用在活塞的接触面和工作压力面上。

Hydraulic impact mechanism for use in equipment for treating rock and concrete

A hydraulic impact mechanism, of the valveless impact mechanism type, comprising a pre-charged gas accumulator connected to a working chamber in order to make possible impact mechanisms for equipment for rock drilling and hydraulic breakers that is lighter, cheaper and more sustainable from the point of view of material fatigue. Furthermore, a gas accumulator of piston type with an integral brake chamber (240, 250, 360) and a piston (220, 320) designed to fit into the said brake chamber (240, 250, 360).

Portable compressed air impact tool - has cylindrical sleeve valve with lengthwise channel leading to working chambers

The portable compressed-air impact tool has a striker piston reciprocating in a housing to form working chambers of variable volume. The housing has a distributor chamber connected to the working chambers and to the compressed air supply in turn by a valve working in it. The valve (22) is a cylindrical sleeve, enclosing one or more openings (32) with its inner surface, through which the air is delivered to the distributor chamber (19). This opening leads to one or more lengthwise channels (29) formed in the valve, permanently connected to the compressed air supply, and delivering to the working chamber inlet passages (25, 26).

HYDRAULIC STRAPPING DRIVER OPERATED WITH SCREWS

Hydraulic hammering device

A hydraulic hammering device which uses a scheme in which a front chamber is switched to a low-pressure circuit when a piston moves forward, wherein the occurrence of "galling" of the piston in a sliding contact portion with a front-chamber liner is reduced. The front chamber (2) has the front-chamber liner (30) fitted to an inner surface of a cylinder (10). A liquid chamber space communicating with the front chamber (2) and filled with hydraulic fluid is formed as a cushion chamber (3) on the inner peripheral surface of a rear portion of the front-chamber liner (30). The cushion chamber (3) has a second drain circuit (from first end face grooves (46) to slits (48) to second end face grooves (47)) which is provided separately from a drain circuit that guides the hydraulic fluid passing through a liner bearing of the front-chamber liner (30) to the low-pressure circuit.

Head valve system for air spring power tool

A power tool includes an air spring cylinder. A piston is movably positioned within the cylinder. A head valve assembly of the power tool includes a flapper valve configured to seal the air spring cylinder from an air accumulator when the flapper valve is in a non-firing position.

Rock drilling machine, method for rock drilling and rock drill rig

A rock drilling machine (2) which is adapted to intermittently produce shock wave pulses for transfer over a drill string (3) to a rock disintegrating drill bit (6). The rock drilling machine includes: a force setting unit (8) which is arranged to periodically subject the drill string (3) to a setting force in said drilling direction, and a control unit (11) which is arranged to activate the force setting unit to initiate said setting force before a point of time for producing at least a selection of said shock wave pulses in order to ensure enhanced rock contact of the drill bit (6) when performing an impact. The invention also concerns a method and a rock drill rig.

PERCUSSION DEVICE.

Distributing valve for rock drills or like percussive tools

597,920. Valve gear for percussive tools. CHICAGO PNEUMATIC TOOL CO. Sept. 24, 1945, No. 24677. Convention date, Oct. 3, 1944. [Class 122 (ii)] A distributing valve 39 for a percussive tool is of annular form and is mounted in a valve chest and surrounds a bush 31 through which the rifle bar 28 passes. As shown, motive fluid passes through valve 42, ratchet ring 27 and the bore of the valve to the cylinder 12 and maintains the valve open by acting on the end face 53. The piston 11 is moved forward and the other end of the cylinder exhausts through groove 59 in the valve until the port 68 is uncovered to admit pressure fluid to act on the face 72 of a collar 57 on the valve to close the admission and exhaust ports and open admission to the other end of the cylinder by the end 56 uncovering the port 65. The valve is held in this position by the pressure of the motive fluid acting on the end 56 in opposition to that acting on the face 54 provided in the bore 55. The compression in the cylinder acting on the end face 53 again reverses the valve and the cycle is repeated.

PERCUSSION APPARATUS

Cet appareil à percussions (2) comporte un piston de frappe (5), un distributeur de commande (11) agencé pour commander un mouvement alternatif du piston de frappe (5), et un dispositif de pilotage (15) agencé pour faire varier la course de frappe du piston de frappe (5). Le dispositif de pilotage (15) comprend une pluralité de canaux de pilotage (18a-18c), un canal de commande (19) relié au distributeur de commande (11), un tiroir de pilotage (16) monté mobile entre une pluralité de positions de pilotage, et un tiroir de réglage (34) monté dans un logement de réception délimité par le tiroir de pilotage, le tiroir de pilotage (16) et le tiroir de réglage (34) délimitant une première chambre de réglage (36) reliée au canal de commande (19) et une deuxième chambre de réglage (37) reliée à un circuit d'alimentation en fluide haute pression (12). Le tiroir de réglage (34) est monté mobile entre une première position dans laquelle la première chambre de pilotage (36) et la deuxième chambre de réglage (37) sont reliées et une deuxième position dans laquelle la première chambre de pilotage (36) et la deuxième chambre de réglage (37) sont isolées. The percussion apparatus (2) comprises a striking piston (5), a control valve (11) arranged to control reciprocating movement of the striking piston (5), and a steering device (15) arranged to vary the stroke stroke of the striking piston (5). The control device (15) comprises a plurality of control channels (18a-18c), a control channel (19) connected to the control distributor (11), a control spool (16) movably mounted between a plurality of positions a control slide, and an adjusting slide (34) mounted in a receiving housing delimited by the control spool, the control spool (16) and the adjusting spool (34) defining a first control chamber (36) connected to the control channel (19) and a second control chamber (37) connected to a high pressure fluid supply circuit (12). The adjusting slide (34) is movably mounted between a ...

Bumper with a rotatable control valve

Oppfinnelsen vedrører en slaginnretning med en ramme hvortil et verktøy kan koples. Mellom rammen og verktøyet er det et spenningselement (3) som bæres av slaginnretningens ramme, et hydraulisk fluidrom (6) og midler for føring av trykksatt hydraulisk fluid inn i og ut fra det hydrauliske fluidrom (6). Slaginnretningen har en dreibart monterbar styreventil (5) som har styrekanaler (5b) som interrnitterende fører det hydrauliske fluid fra det hydrauliske fluidrom (6) og til returkanalen.

Compressed fluid tool drawer

Impact device with a rotable control valve

本发明涉及一种冲击设备，其包括有工具可连接至其上的框架，和位于框架和工具之间支撑于冲击设备的框架上的应力元件(3)，以及液压流体空间(6)和分别将受压的液压流体导引进入和离开液压流体空间(6)的装置。该冲击设备包括旋转地安装的控制阀(5)，其具有将液压流体间断地从液压流体空间(6)导引至返回通道的控制通道(5b)。

Control valve in a percussion device and a method comprising a closed pressure space at the end position of the piston