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 ...

IMPACT MECHANISM WITH MULTI-MATERIAL STRIKER

An impact mechanism for use in a power tool having a motor and adapted to impart axial impacts to a tool bit. The impact mechanism includes a piston configured to reciprocate in response to receiving torque from the motor, a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, and an anvil that is impacted by the striker when the striker reciprocates towards the tool bit. The anvil imparts axial impacts to the tool bit. The striker includes a body portion formed of a first material and an insert portion within the body portion. The insert portion is formed of a second material that is more dense than the first material. 1. An impact mechanism for use in a power tool having a motor and adapted to impart axial impacts to a tool bit , the impact mechanism comprising:a piston configured to reciprocate in response to receiving torque from the motor;a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston; andan anvil that is impacted by the striker when the striker reciprocates towards the tool bit, the anvil imparting axial impacts to the tool bit,wherein the striker includes a body portion formed of a first material and an insert portion within the body portion, the insert portion being formed of a second material that is more dense than the first material.2. The impact mechanism of claim 1 , wherein the insert portion is a cylindrical slug.3. The impact mechanism of claim 1 , wherein the body portion includes a cavity into which the insert portion is received.4. The impact mechanism of claim 3 , wherein the insert portion is a cylindrical slug claim 3 , and wherein the cavity has a cylindrical shape to receive the cylindrical slug.5. The impact mechanism of claim 1 , wherein the first material is steel claim 1 , and wherein the second material is tungsten carbide.6. The impact mechanism of claim 1 , wherein the striker includes a nose that impacts the anvil.7. The impact ...

Portable power tool

The portable power chiseling tool has a tool holder, an electric motor, a striking mechanism and an idle strike catcher. The tool holder can receive a tool and retain it movably on a working axis. The striking mechanism includes an exciter piston, a striker, an anvil and a guide for the anvil. The exciter piston is coupled to the electric motor. The guide guides the anvil on the working axis. The idle strike catcher for the anvil has a conical inner surface facing the anvil. The anvil has an associated end face facing in the striking direction. The end face rests against the conical inner surface when the anvil is in its forwardmost position in the striking direction. The end face of the anvil has a first segment and a second segment in the circumferential direction. The second segment is offset in the striking direction relative to the first segment.

HAND-HELD POWER TOOL

A hand-held power tool has a tool socket to hold a tool on a working axis . A pneumatic striking mechanism 6 has an exciter piston that is forced to move periodically along the working axis by a motor and it also has a striker that is coupled to the exciter piston via a pneumatic chamber . The exciter piston has a cylindrical main body made of a polymer. One or more rings containing copper surround the main body . The rings protrude from the main body in the radial direction. 15-. (canceled)6. A hand-held power tool comprising:a tool socket to hold a tool on a working axis;a motor;a pneumatic striking mechanism having an exciter piston forced to move periodically along the working axis by the motor and also having a striker coupled to the exciter piston via a pneumatic chamber, the exciter piston having a cylindrical main body made of a polymer; andat least one ring containing copper surround the main body, the at least one ring protruding from the main body in the radial direction.7. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings and an outer diameter of the rings containing copper is between 0.2 mm and 1.0 mm claim 6 , and larger than an outer diameter of the main body.8. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings and the rings cover between 25% and 70% of the jacket of the main body.9. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings and a gap is provided between the rings along the working axis.10. The hand-held power tool as recited in wherein the exciter piston runs in a guide tube made of a polymer.11. The hand-held power tool as recited in wherein the at least one ring includes a plurality of rings protruding from the main body in the radial direction. The present invention relates to a hand-held power tool with a pneumatic striking mechanism, especially a hammer drill.A hand-held power tool of the ...

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 ...

SPRING HAMMER FOR RAPPING A SURFACE

A spring hammer for rapping a surface, the spring hammer includes an anvil with an impact surface. The anvil can fastened to the surface to be rapped. A movable piston has a first end that is in operation moved towards the impact surface of the anvil. A guiding structure guides the piston to move in a defined direction with respect the anvil and a device for launching the piston to move the piston towards the impact surface of the anvil. The piston is a solid block in which the first end of the piston is machined to an integrated flexible spring geometry. 1. A spring hammer for rapping a surface , the spring hammer comprising:an anvil with an impact surface, which anvil can be fastened to the surface to be rapped;a movable piston having a first end that is in operation moved towards the impact surface of the anvil;a guiding structure for guiding the piston to move in a defined direction with respect to the anvil; anda device for launching the piston to move the piston towards the impact surface of the anvil,wherein the first end of the piston or the impact surface of the anvil is machined to form an integrated flexible spring geometry.2. A spring hammer in accordance with claim 1 , wherein the spring coefficient of the flexible spring geometry such that the maximum deceleration of the piston is on the order five hundred grams to one thousand grams.3. A spring hammer in accordance with claim 2 , wherein the flexible spring geometry comprises a curved hollow part integrated to an end of a solid block part of the piston.4. A spring hammer in accordance with claim 2 , wherein the flexible spring geometry comprises a curved hollow part integrated to a solid portion of the anvil.5. A spring hammer in accordance with claim 3 , wherein the curved hollow part has an open free end.6. A spring hammer in accordance with claim 1 , wherein the flexible spring geometry is made of high quality tempering steel material.7. A spring hammer in accordance with claim 1 , wherein the ...

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 ...

Hand-Held Machine Tool

A machine tool includes a tool holder and a pneumatic striking mechanism that includes, on a working axis, an exciter piston, a beater, and a pneumatic chamber disposed between the exciter piston and the beater. The exciter piston is drivable by the motor and includes a pot-shaped base body, a seal ring, and a tube-shaped cladding body. The pot-shaped base body has a lateral wall enclosing the working axis and a collar which protrudes in a radial direction. The tube-shaped cladding body is disposed on the pot-shaped base body surrounding the lateral wall. A groove is defined between the collar and the tube-shaped cladding body and the seal ring is disposed in the groove. 111.-. (canceled)12. A machine tool , comprising:a tool holder;a pneumatic striking mechanism including, on a working axis, an exciter piston, a beater, and a pneumatic chamber disposed between the exciter piston and the beater; anda motor, wherein the exciter piston is drivable by the motor;wherein the exciter piston includes a pot-shaped base body, a seal ring, and a tube-shaped cladding body;wherein the pot-shaped base body has a lateral wall enclosing the working axis and a collar which protrudes in a radial direction;wherein the tube-shaped cladding body is disposed on the pot-shaped base body surrounding the lateral wall;wherein a groove is defined between the collar and the tube-shaped cladding body;wherein the seal ring is disposed in the groove.13. The machine tool according to claim 12 , wherein the groove is defined by the collar in an impact direction claim 12 , by the lateral wall in the radial direction claim 12 , and by a front surface of the tube-shaped cladding body in a direction opposite to the impact direction.14. The machine tool according to claim 13 , wherein the seal ring abuts directly on the collar and the front surface or wherein the seal ring is separated by an air gap from the collar and the front surface.15. The machine tool according to claim 12 , wherein the seal ring ...

Portable Power Tool

A portable power tool has an exciter piston guided along a movement axis in a guide tube and a striker coupled to the exciter piston. A connecting rod is fastened to a piston pin in the exciter piston and to an electric motor. A bearing for supporting the piston pin is formed by a piston head of the exciter piston and a closure plate inserted into the exciter piston. A rotary closure is formed by a groove, extending in a direction of rotation about the movement axis, in the piston wall and by a radially protruding fin on the closure plate. A detent for locking the fin counter to the direction of rotation is pivotable in the radial direction between a locking position and a releasing position. The detent is deflected beyond the external dimensions of the piston wall in the radial direction in the releasing position. 19.-. (canceled)10. A portable power tool , comprising:a tool holder;an electric motor;a pneumatic percussion mechanism, wherein the pneumatic percussion mechanism includes an exciter piston guided along a movement axis in a guide tube and a striker coupled to the exciter piston via a pneumatic chamber and wherein a piston wall of the exciter piston contacts the guide tube;a connecting rod, wherein the connecting rod is fastened on a first end to a piston pin in the exciter piston and is coupled on a second end with the electric motor;a bearing, wherein the bearing supports the piston pin and wherein the bearing is formed by a piston head of the exciter piston and a closure plate disposed in the exciter piston and located opposite to the piston head;a rotary closure, wherein the rotary closure is formed by a groove that runs in a direction of rotation around the movement axis in the piston wall of the exciter piston and by a radially protruding fin on the closure plate and wherein the fin is engaged in the groove; anda detent, wherein the detent locks the fin counter to the direction of rotation, wherein the detent is pivotable in a radial direction ...

Hammer drill

A hammer drill is provided with a hammer mechanism that includes a cylinder having a central axis, a ram having a radial recess slidably mounted within the cylinder, a piston slidably mounted within the cylinder, and a ram catcher. The ram catcher includes a first ring and a second ring surrounding the central axis and forming a groove therebetween, the second ring being located between the first ring and the end of the cylinder. An O-ring that is resiliently-deformable is mounted within the groove and includes an inner side projecting inwardly towards the central axis. When the ram is in a working position, the O-ring is located forward of the ram. When the ram is in a forward position, the O-ring is located in-line with the radial recess of the ram.

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 ...

Hand-held Power Tool

A power tool is disclosed. The power tool has a pneumatic percussion mechanism with a percussion element guided on a working axis and a percussion surface pointing in a percussion direction, an exciter piston driven by a motor, and a pneumatic chamber formed between the exciter piston and the percussion element. The percussion element has a first partial body forming the percussion surface, a second partial body, and a spring element. The first partial body is moveable along the working axis relative to the second partial body. The second partial body has an abutment surface pointing in the percussion direction. The first partial body has an impact surface opposite the abutment surface. The spring element drives the first partial body relative to the second partial body in the percussion direction into a starting position in which the abutment surface is separated from the impact surface by a gap. 17.-. (Canceled)8. A power tool , comprising:a tool holder for holding a chiseling tool on a working axis;a motor; anda pneumatic percussion mechanism, wherein the pneumatic percussion mechanism includes a percussion element guided on the working axis and having a percussion surface pointing in a percussion direction, an exciter piston drivable by the motor, and a pneumatic chamber formed between the exciter piston and the percussion element for coupling the percussion element to a movement of the exciter piston;wherein the percussion element has a first partial body that forms the percussion surface, a second partial body, and a spring element, wherein the first partial body is movable along the working axis relative to the second partial body, and wherein the second partial body has an abutment surface pointing in the percussion direction;wherein the first partial body has an impact surface opposite the abutment surface for receiving an abutment of the second partial body on the first partial body;wherein the spring element drives the first partial body relative to the ...

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.

ROCK BREAKING DEVICE

The invention concerns a rock breaking device comprising a striking cell having at least one actuation chamber, a striking piston, and a hydraulic circuit comprising a hydraulic supply source having a High Pressure circuit and a Low Pressure circuit, and an actuator configured to connect the High Pressure circuit or the Low Pressure circuit to the actuation chamber so as to move the piston in translation in the striking cell in a normal movement area of which the limits are variable depending on the pressure difference between the High Pressure circuit and the Low Pressure circuit, the striking cell comprising depressurizing means configured to control the establishment of hydraulic communication between the High Pressure circuit and the Low Pressure circuit when the striking piston exits a predefined movement area. 1. A rock breaking device , comprising:a power cell having at least one actuating chamber,an impact piston translatable in the power cell, anda hydraulic circuit comprising:a hydraulic supply source having a High-Pressure circuit and a Low-Pressure circuit, andan actuator configured to connect the High-Pressure circuit or the Low-Pressure circuit to the actuating chamber such as to translate the piston in the power cell in a normal movement zone wherein the boundaries are variable depending upon the pressure difference between the High-Pressure circuit and the Low-Pressure circuit, wherein the power cell comprises depressurization means configured to command a placement in hydraulic communication of the High-Pressure circuit with the Low-Pressure circuit when the power cell leaves a predetermined movement zone.2. The device according to claim 1 , wherein the depressurization means comprise:a groove arranged on the impact piston, anda regulating portion connected on the one hand to the High-Pressure circuit and on the other hand to the Low-Pressure circuit, the regulating portion being closed off by the impact piston when the impact piston is movable in ...

衝撃工具

【課題】 出力軸を回転させつつ対象物を打撃する衝撃工具において、できるだけ大型化を伴うことなく、打撃力の増大を図る。 【解決手段】 モータ２、出力軸１１、打撃子１７、およびモータ２による回転を打撃子１７の往復動に変換して、該打撃子１７に含まれる打撃子本体３０を出力軸１１側に打ち付ける打撃力発生機構と、を備える衝撃工具において、打撃子本体３０を、比重の異なる少なくとも二つの部材３１，３２を含む構成とした。 【選択図】 図２

Hand-held power tool with a pneumatic percussion mechanism

A hand-held power tool includes a pneumatic percussion mechanism having a percussion piston reciprocating along a percussion axis and having a bore extending at an angle to the percussion axis, and an air spring for displacing the percussion piston.

Hand-held hammer machine

The patent application covers a reciprocating drive mechanism for a striker in a hammer, a rotary hammer or a power drill having a hammer action (2), which utilises a sinusoidal cam channel (54), formed on a drive member (46) and a cam follower (56;100;200), in the form of a ball bearing, attached to a driven member (48) which, due to the interaction of the cam and cam follower, results in a reciprocating movement of the driven member. Both the drive member and driven member can be rotatingly driven by a motor (18), their relative speeds resulting in the reciprocating movement of the driven member. The driven member is connected to the striker either via a mechanical helical spring (44) or an air spring (206).

Hand-held machine

FIELD: process engineering. SUBSTANCE: invention relates to hand-held machines with crank driving gear. Proposed machine comprises drive and percussion mechanism. Percussion mechanism comprises crank driving gear and driven reciprocating piston. Crank driving gear comprises, at least, one resilient link arranged between drive and piston, in direction of drive action, and crank plate. The latter comprises driving element and driven element coupled therewith. Driving element is coupled with driven element via, at least, one resilient element. EFFECT: damped vibrations at required force of percussion mechanism. 8 cl, 10 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 482 957 (13) C2 (51) МПК B25D 11/06 B25D 11/12 B25D 17/24 (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010107375/02, 02.06.2008 (24) Дата начала отсчета срока действия патента: 02.06.2008 (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) (43) Дата публикации заявки: 10.09.2011 Бюл. № 25 2 4 8 2 9 5 7 (45) Опубликовано: 27.05.2013 Бюл. № 15 (56) Список документов, цитированных в отчете о поиске: US 2872914 А, 10.02.1959. FR 446414 А, 05.12.1912. US 2005082073 A1, 21.04.2005. US 4567951 A, 04.02.1986. WO 9300201 A1, 07.01.1993. EP 0345896 A2, 13.12.1989. SU 175463 A1, 01.01.1965. 2 4 8 2 9 5 7 R U (86) Заявка PCT: EP 2008/056781 (02.06.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 01.03.2010 (87) Публикация заявки РСТ: WO 2009/015924 (05.02.2009) Адрес для переписки: 105082, Москва, Спартаковский пер., д. 2, стр. 1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) РУЧНАЯ МАШИНА (57) Реферат: Изобретение относится к ручным машинам, имеющим кривошипный передаточный механизм. Ручная машина содержит привод и ударный механизм. Ударный механизм содержит кривошипный передаточный механизм и поршень, установленный с возможностью возвратно-поступательного перемещения от привода. Кривошипный передаточный механизм ...

Impact mechanism for electric hand machine

FIELD: process engineering. SUBSTANCE: invention relates to impact mechanisms of electric hand machines. Impact mechanism comprises cylinder accommodating piston reciprocating therein and outer guide to piston guide section to fit in. Piston end located outside cylinder has bent end section to surround cylinder end from outside. Piston guide section is formed, at least, partially by said bent end section or secured thereon. Said bent end section is provided with piston drive element at least partially made thereon or secured thereto. Piston drive comprises crank mechanism to make the piston reciprocate by rocker guide. Crank mechanism has cam engaging with rocker guide. Outer guide cross-section features C-like shape enveloping external bush formed by bent end section and piston end. Rocker guide is arranged on bent end outside side in angular sector wherein outer guide does not surround external bush. EFFECT: compact design. 8 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 464 157 (13) C2 (51) МПК B25D 17/06 B25D 11/12 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009128746/02, 29.10.2007 (24) Дата начала отсчета срока действия патента: 29.10.2007 (73) Патентообладатель(и): РОБЕРТ БОШ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 27.12.2006 DE 102006061627.8 (72) Автор(ы): МАЙКСНЕР Герхард (DE) (43) Дата публикации заявки: 10.02.2011 Бюл. № 4 2 4 6 4 1 5 7 (45) Опубликовано: 20.10.2012 Бюл. № 29 (56) Список документов, цитированных в отчете о поиске: GB 446939 A, 08.05.1936. SU 262807 A1, 01.01.1970. SU 114007 A1, 01.01.1958. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.07.2009 2 4 6 4 1 5 7 R U (87) Публикация заявки РСТ: WO 2008/080653 (10.07.2008) C 2 C 2 (86) Заявка PCT: EP 2007/061597 (29.10.2007) Адрес для переписки: 105082, Москва, Спартаковский пер., 2, стр. 1, секция 1, этаж 3, "ЕВРОМАРКПАТ" (54) УДАРНЫЙ МЕХАНИЗМ ДЛЯ ЭЛЕКТРИЧЕСКОЙ РУЧНОЙ МАШИНЫ ...

SHOCK MECHANISM FOR ELECTRIC HAND MACHINE

1. Ударный механизм (5) электрической ручной машины (1), прежде всего перфоратора и/или отбойного молотка (2), содержащий цилиндр (13), поршень (17), установленный своим направляющим участком (20) в цилиндре (13) с возможностью продольного перемещения, и внешнюю направляющую (31), к которой прилегает направляющая часть (29) поршня (17) с обеспечением направленного продольного перемещения последнего, причем на конце (26) поршня, расположенном вне цилиндра (13), имеется отвернутый концевой участок (27), способный охватывать снаружи концевой участок (16) цилиндра (13), а направляющая часть (29) поршня по меньшей мере частично образована отвернутым концевым участком (27) или закреплена на нем. ! 2. Ударный механизм по п.1, отличающийся тем, что на отвернутом концевом участке (27) по меньшей мере частично выполнен или закреплен элемент (34) привода (46) поршня. ! 3. Ударный механизм по п.2, отличающийся тем, что привод (46) поршня включает в себя кривошипный механизм (47) для сообщения поршню движения за счет взаимодействия с элементом (34) привода поршня. ! 4. Ударный механизм по п.3, отличающийся тем, что элемент (34) привода поршня выполнен в виде кулисной направляющей (33). ! 5. Ударный механизм по п.4, отличающийся тем, что кривошипный механизм (47) имеет кривошипный выступ (45), входящий в кулисную направляющую (33). ! 6. Ударный механизм по п.2, отличающийся тем, что привод (46) поршня входит в его состав. ! 7. Ударный механизм по одному из предыдущих пунктов, отличающийся тем, что отвернутый концевой участок (27) с концом (26) поршня образует охватывающую втулку (28) или по меньшей мере одну охватывающую консоль (52). ! 8. Ударный механизм по одному из пп.2-6, отличающийся тем, что порш� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 128 746 (13) A (51) МПК B25D 17/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): РОБЕРТ БОШ ГМБХ (DE) (21)(22) Заявка: 2009128746/02, 29.10.2007 ...

Striking mechanism of a handheld electric power tool

本发明涉及一种电动手持式工具机(1)的、尤其是锤钻和/或冲击锤(2)的冲击机构(5)，该冲击机构具有锤管(13)、活塞(17)和活塞外导向件(31)，活塞(17)以导向区段(20)纵向移动地支承在锤管(13)中，活塞(17)的导向区域(29)在活塞外导向件(31)上纵向移动地被导向。在此规定，位于锤管(13)外部的活塞端部(26)具有用于与锤管(13)的端部区域(16)搭接的搭接端部(27)并且导向区域(29)至少部分地属于搭接端部(27)或固定在该搭接端部(27)处。

Compression-Vacuum Impact Mechanism

Hammer drill

The invention aims to improve the power/weight ratio of a two-stroke engine employed as the prime mover in a drilling and chiselling hammer 1 (sometimes also known as a percussion tool) of the kind in which percussion impacts are transmitted to a tool holder 3 of the tool by way of a percussion piston 9 which is reciprocated by the engine, thereby to enable the tool to be lighter, so that it can more readily be manipulated in the case of a hand-held tool. To achieve this improved efficiency, crank 7 of the percussion piston 9 is accommodated in a chamber 1a into which air is drawn by way of a non- return valve 11 upon movement of the piston 9 towards the top dead-centre position and from which air is displaced, under compression, through a pipeline 13 to an entry slot 1e of the cylinder 1c of the engine. <IMAGE>

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.

Impact piston

FIELD: mining. SUBSTANCE: impact piston for the rock drilling machine, containing the control cylinder, the distributor and the working medium under the pressure, includes the control edge, adapted to provide changes of the distributor position in the direction parallel to the axial direction of the impact piston, when the impact piston moves in the impact direction relatively to the control cylinder. The control edge of the impact piston contains at least one recess, provided on the outer periphery of the control edge and configured to provide the start of changing the distributor state, before the control edge of the impact piston will pass the corresponding control edge, provided on the distributor or the control cylinder. EFFECT: weathering reduction at the working space. 14 cl, 8 dwg С 2 2624492 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) (11) м эм а а (13) (51) МПК Е21В 1/24 (2006.0Т) Е21В 1/38 (2006.01) Е21В 4/14 (2006.01) В25р 9/14 (2006.01) \ / \ ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2015149590, 18.11.2015 (72) Автор(ы): МУУТТОНЕН Тимо (ЕП, (24) тата чала отсчета срока действия патента: КОСКИМЯКИ Антти (ЕП. "0" КОТАЛА Ари (Е|), Дата регистрации: ЛЕЙНО Тимо (ЕП) 04.07.2017 (73) Патентообладатель(и): Приоритет(ь): САНДВИК МАЙНИНГ ЭНД (30) Конвенционный приоритет: КОНСТРАКШН ОЙ (ЕП 20.11.2014 ЕР 14194091.6 (43) Дата публикации заявки: 24.05.2017 Бюл. № 15 (45) Опубликовано: 04.07.2017 Бюл. № 19 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (56) Список документов, цитированных в отчете о поиске: КО 2027937 С1, 27.01.1995. КО 2013540 СТ, 30.05.1994. КО 2042812 СТ, 27.08.1995. \О 2004/073932 АТ, 02.09.2004. 05 2010/0059242 АТ, 11.03.2010. (54) УДАРНЫЙ ПОРШЕНЬ (57) Реферат: Группа изобретений относится к области бурения. Ударный поршень для бурильной машины для горной породы, содержащей цилиндр управления, распределитель и рабочую среду под ...

HAND MACHINE WITH AN ELASTIC LINK

1. Ручная машина, прежде всего перфоратор и/или отбойный молоток, содержащая привод (10) и ударный механизм (12), включающий в себя передачу (14а, 14b, 14с) и поршень (18), установленный с возможностью возвратно-поступательного перемещения от привода (10), отличающаяся тем, что между приводом (10) и поршнем (18) в направлении действия привода (10) предусмотрено по меньшей мере одно упругое звено (22a-22j). ! 2. Ручная машина по п.1, отличающаяся тем, что по меньшей мере одно упругое звено (22a-22j) включено в состав передачи (14а, 14b, 14с). ! 3. Ручная машина по п.1 или 2, отличающаяся тем, что передачей (14а) является кривошипный передаточный механизм, содержащий кривошипный палец (24), шатун (26a-26g) и поршневой палец (28). ! 4. Ручная машина по п.3, отличающаяся тем, что упругое звено (22а) предусмотрено между кривошипным пальцем (24) и шатуном (26а) кривошипного передаточного механизма. ! 5. Ручная машина по п.3, отличающаяся тем, что упругое звено (22а) предусмотрено между шатуном (26b) и поршневым пальцем (28) кривошипного передаточного механизма. ! 6. Ручная машина по п.3, отличающаяся тем, что упругое звено (22а) предусмотрено в шатуне (26с) кривошипного передаточного механизма. ! 7. Ручная машина по п.3, отличающаяся тем, что упругое звено (22а) предусмотрено между поршневым пальцем (28) кривошипного передаточного механизма и поршнем (18). ! 8. Ручная машина по п.1, отличающаяся тем, что передачей (14а) является кривошипный передаточный механизм с кривошипным диском (30а), содержащим ведущий элемент (32а, 32b) и сопряженный с ведущим элементом (32а, 32b) ведомый элемент (34), причем ведущий элемент (32а, 32b) кривошипного диска по меньшей мере частично сопряжен с ведомым элементом (34) кривошипного ди РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 107 375 (13) A (51) МПК B25D 11/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2010107375/02, 02.06.2008 (71) Заявитель(и): ...

Manual tool machine

Eine Handwerkzeugmaschine hat einen Antrieb und ein pneumatisches Schlagwerk. Das Schlagwerk beinhaltet einen auf einer Arbeitsachse beweglichen Schläger, einen durch ein Pleuel (17) an den Antrieb angebundenen Erregerkolben und eine pneumatische Kammer, die eine Bewegung des Schlägers an den Erregerkolben ankoppelt. Das Pleuel (17) ist um eine Schwenkachse (27) schwenkbar in dem Erregerkolben aufgehängt. Ein Dichtring (25) umspannt in einer Ebene eine Mantelfläche des Erregerkolbens. Die Schwenkachse (27) liegt in der Ebene. A hand tool machine has a drive and a pneumatic striking mechanism. The percussion mechanism includes a racket movable on a working axis, an exciter piston connected to the drive by a connecting rod (17) and a pneumatic chamber which couples a movement of the racket to the exciter piston. The connecting rod (17) is pivotally suspended about a pivot axis (27) in the exciter piston. A sealing ring (25) spans in a plane a lateral surface of the exciter piston. The pivot axis (27) lies in the plane.

Manual machine tool

Eine Schlagwerk hat einen in einem Führungsrohr längs einer Bewegungsachse 17 geführten Erregerkolben und einen über eine pneumatische Kammer an den Erregerkolben angekoppelten Schläger , wobei eine Kolbenwand 22 des Erregerkolbens das Führungsrohr berührt. Ein Pleuel 18 ist an einem Ende mit einem Kolbenbolzen 28 in dem Erregerkolben befestigt ist und mit einem anderen Ende mit dem Elektromotor gekoppelt ist. Ein Lager 29 zum Lagern des Kolbenbolzens 28 ist durch einen Kolbenboden 24 des Erregerkolbens und eine in den Erregerkolben eingesetzte, dem Kolbenboden 24 gegenüberliegende Verschlussplatte 36 gebildet. Ein Drehverschluss ist durch eine in einer Drehrichtung um die Bewegungsachse 17 verlaufende Nut in der Kolbenwand 22 des Erregerkolbens und einem radial vorstehenden Flügel 40 der Verschlussplatte 36 gebildet ist. Ein Sperrhaken zum Verriegeln des Flügels 40 entgegen der Drehrichtung kann in radialer Richtung zwischen einer verriegelnden Stellung und einer freigebenden Stellung verschwenkt werden, wobei der Sperrhaken in der freigebenden Stellung in radialer Richtung über die Außenabmessung der Kolbenwand 22 ausgelenkt ist. An impact mechanism has a guided in a guide tube along a movement axis 17 excitation piston and a coupled via a pneumatic chamber to the exciter piston racket, wherein a piston wall 22 of the exciter piston contacts the guide tube. A connecting rod 18 is attached at one end to a piston pin 28 in the excitation piston and coupled to another end with the electric motor. A bearing 29 for supporting the piston pin 28 is formed by a piston head 24 of the excitation piston and an inserted into the exciter piston, the piston head 24 opposite closure plate 36. A rotary closure is formed by a groove extending in a direction of rotation about the movement axis 17 in the piston wall 22 of the excitation piston and a radially projecting wing 40 of the closure plate 36. A locking hook for locking the wing 40 against the direction of rotation can be ...

Handheld tool apparatus

Die Erfindung geht aus von einer Handwerkzeugvorrichtung mit einer Werkzeugführungseinheit (20a), die eine Werkzeugspindel (38a) und ein Werkzeugfutter (36a) aufweist, und einem Schlagwerk (22a; 22b; 22c), das einen Schläger (44a) aufweist, der in zumindest einem Betriebszustand die Werkzeugführungseinheit (20a) schlagend antreibt. Es wird vorgeschlagen, dass eine Masse des Schlägers (44a) maximal zwei Drittel so groß ist wie eine Masse der Werkzeugführungseinheit (20a).

Schlagwerkskörper, percussion and hand tool with a striking mechanism

Schlagwerkskörper eines Schlagwerks 100 einer Handwerkzeugmaschine mit einer Seitenfläche 14.1, 24.1, 34.1, 44.1 und einer Anschlagfläche 32.1, 42.1, 43.1, mittels der ein Impuls auf ein impulsaufnehmendes Teil übertragbar ist, wobei – wenigstens ein erster, die Anschlagfläche 32.1, 42.1, 43.1 und/oder die Seitenfläche 14.1, 24.1, 34.1, 44.1 aufweisender Schlagwerkskörperteil 32, 35, 42, 43, 44 aus einem ersten Material gebildet ist und ein zweiter Schlagwerkskörperteil 15, 25.1, 25.2 aus einem zweiten Material gebildet ist, und wobei – das erste Material in wenigstens einer Materialbeschaffenheit widerstandsfähiger ausgebildet ist als das zweite Material, dadurch gekennzeichnet, dass der Schlagwerkskörper als ein einstückiger Stahlkörper 11, 21, 31, 41 gebildet ist, wobei (a) das erste Material und das zweite Material stofflich identisch sind und das erste Material des ersten Schlagwerkskörperteils 32, 35, 42, 43, 44 eine andere Wärmebehandlung aufweist als das zweite Material des zweiten Schlagwerkskörperteils 15, 25.1, 25.2 oder (b) das erste und das zweite Material stofflich unterschiedlich sind und das erste und das zweite Schlagwerkskörperteil stoffschlüssig aneinandergefügt sind, und wobei optional das erste Material des ersten Schlagwerkskörperteils 32, 35, 42, 43, 44 eine andere Wärmebehandlung aufweist als das zweite Material des zweiten Schlagwerkskörperteil 15, 25.1, 25.2. Impact mechanism of a striking mechanism 100 of a hand machine tool with a side surface 14.1, 24.1, 34.1, 44.1 and a stop surface 32.1, 42.1, 43.1, by means of which a pulse can be transmitted to a pulse-receiving part, with at least a first, the stop surface 32.1, 42.1, 43.1 and / or the striking mechanism body part 32, 35, 42, 43, 44 having the side surface 14.1, 24.1, 34.1, 44.1 is formed from a first material and a second striking mechanism body part 15, 25.1, 25.2 is formed from a second material, and wherein - the first material is made more resistant in at least one material ...

Apparatus for generating impulse-dynamic process forces

An apparatus for generating impulse-dynamic process forces includes a pressure chamber, a connecting chamber and a bolt chamber. The pressure chamber includes a plunger arranged to be pushed into the pressure chamber for compression of a hydraulic medium located therein. In the connecting chamber there is displaceably arranged a stepped piston which has a valve body for closing an orifice connecting the pressure chamber to the connecting chamber. In the bolt chamber there is located a displaceable impact bolt which has a first bolt portion and a second bolt portion. The first bolt portion seals an interior space of the bolt chamber that surrounds the second bolt portion. Connected to the bolt chamber there is at least one pressure reservoir containing pressurised pressure medium, which pressure reservoir is in communicating connection via a connection port with the interior space of the bolt chamber.

Striking mechanism body, striking mechanism and hand-held machine tool with a striking mechanism

The structure has percussion portions and striking mechanism portions that are provided with respect to contacting surface and side surface. Several pulses are transmitted to the side surface and stop surface. The percussion portions are made of higher resistant materials than the materials of the striking mechanism portions. Several steel structures are integrated at the surface of the main structure. The heat treatment process of the materials of percussion portions is different from the heat treatment process of materials of striking mechanism portions. An independent claim is included for percussion mechanism.

Striking-mechanism body, striking mechanism and handheld power tool with a striking mechanism

A striking-mechanism body of a handheld power tool at least a first part of the striking-mechanism body, having an impact surface and/or a lateral surface of a first material, and a second part of the striking-mechanism body of a second material, and the first material being more resistant than the second material in terms of at least one material characteristic, the striking-mechanism body being configured as a one-piece steel body so that the first material and the second material are the same, and the first material of the first part body undergoes a heat treatment that differs from that of the second material of the second part of the striking-mechanism body, or the first and the second materials are different, and the first and the second parts are joined together.

Hand-held machine tool

本发明涉及一种具有气动冲击装置的手持式工具机，它具有一个电机驱动的激振器（12）、一个导管（20）和一个活塞形的冲击锤（13）。所述活塞形的冲击锤（13）通过所述导管（20）的内面（21）沿着一条工作轴线（10）进行引导并且在所述导管（20）中与所述激振器（12）一起锁闭一个空气弹簧（15）。所述冲击锤（13）具有一个罐形的基体（30），所述罐形的基体具有一个朝向所述激振器敞开的空腔和一个填满所述空腔的嵌件（31、50、60）（31）。所述基体（30）由一种具有第一密度的材料制成，所述嵌件（31、50、60）由一种具有第二密度的材料制成，所述第二密度小于所述第一密度。

Power tool

Die Werkzeugmaschine hat eine Werkzeugaufnahme (2) zum Aufnehmen eines meißelnden Werkzeugs auf einer Arbeitsachse (11), einen Motor ( 5) und ein von dem Motor (5) angetriebenes pneumatisches Schlagwerk (6). Das Schlagwerk ( 6) hat einen auf der Arbeitsachse (11) geführten und mit einer in Schlagrichtung (12) weisenden Schlagfläche ( 23) versehenen Schläger (14), einen von dem Motor (5) angetriebenen Erregerkolben ( 13) und eine zwischen Erregerkolben (13) und Schläger (14) ausgebildete pneumatische Kammer (18) zum Ankoppeln des Schlägers (14) an die Bewegung des Erregerkolbens (13). Der Schläger (14) hat einen die Schlagfläche (23) bildenden ersten Teilkörper (35), einen zweiten Teilkörper (34) und ein Federelement (33). Der erste Teilkörper (35) ist relativ zu dem zweiten Teilkörper (35) längs der Arbeitsachse (11) beweglich. Der zweite Teilkörper ( 34) hat eine in Schlagrichtung (12) weisende Stoßfläche ( 37). Der erste Teilkörper ( 35) hat eine der Stoßfläche (37) gegenüberliegende Prallfläche (36) zum Aufnehmen eines Stoßes des zweiten Teilkörpers (34) auf den ersten Teilkörper ( 35). Das Federelement (33) treibt den ersten Teilkörper (35) relativ zu dem zweiten Teilkörper (34) in Schlagrichtung (12) in eine Grundstellung, in welcher die Stoßfläche (37) von der Prallfläche (36) durch einen Spalt (32) getrennt ist. The machine tool has a tool holder (2) for receiving a chiseling tool on a working axis (11), a motor (5) and a pneumatic striking mechanism (6) driven by the motor (5). The percussion mechanism (6) has a hammer (14) guided on the working axis (11) and provided with a striking surface (23) in the direction of impact (12), an exciter piston (13) driven by the motor (5) and an intermediate between exciter pistons (15). 13) and bat (14) formed pneumatic chamber (18) for coupling the racket (14) to the movement of the exciter piston (13). The racket (14) has a striking part (23) forming the first part body (35), a second part body (34) and a spring ...

Impact mechanism with multi-material striker

An impact mechanism for use in a power tool having a motor and adapted to impart axial impacts to a tool bit. The impact mechanism includes a piston configured to reciprocate in response to receiving torque from the motor, a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, and an anvil that is impacted by the striker when the striker reciprocates towards the tool bit. The anvil imparts axial impacts to the tool bit. The striker includes a body portion formed of a first material and an insert portion within the body portion. The insert portion is formed of a second material that is more dense than the first material.

Striking-mechanism body, striking mechanism and handheld power tool with a striking mechanism

本发明涉及冲击机构体、冲击机构和带有冲击机构的手持工具设备。冲击机构体包括侧面和接触面，借助它脉冲能被传递给接受脉冲的部件，第一冲击机构体部件由第一材料构成，第二冲击机构体部件由第二材料构成；第一材料在至少一个材料特性上设计得比第二材料更具抵抗能力；其中，冲击机构体被构成为一整件的钢体，(a)第一材料与第二材料材质上是一致的且第一冲击机构体部件的第一材料有与第二冲击机构体部件的第二材料不同的其他热处理，或者，(b)第一材料和第二材料材质上是不相同的且第一冲击机构体部件与第二冲击机构体部件材料接合地相互拼合，可选的是，第一冲击机构体部件的第一材料有与第二冲击机构体部件的第二材料不同的其他热处理。

Machine tool

The machine tool according to the with a pneumatic hammer mechanism comprises a motorized exciter, a guiding tube, and a piston-shaped beater. The piston-shaped beater is guided by an interior surface of the guiding tube along an operating axis and with the exciter encloses an air spring in a guiding tube. The beater shows a cup-shaped basic body with an open hollow space facing the exciter and an inset filling the hollow space. The basic body is made from a first material with a first density and the insert is made from a material with a second density, which is lower than the first density.

Hand tool

Die erfindungsgemäße Handwerkzeugmaschine mit einem pneumatischen Schlagwerk hat einen motorgetriebenen Erreger (12), ein Führungsrohr (20) und einen kolbenförmigen Schläger (13). Der kolbenförmige Schläger (13) ist durch eine Innenfläche (21) des Führungsrohrs (20) längs einer Arbeitsachse (10) geführt und schließt in dem Führungsrohr (20) mit dem Erreger (12) eine Luftfeder (15) abschließt ab. Der Schläger (13) hat einen topfförmigen Grundkörper (30) mit einem dem Erreger (12) zugewandt offenen Hohlraum und einem den Hohlraum ausfüllenden Einsatz (31, 50, 60) (31). Der Grundkörper (30) ist aus einem ersten Material mit einer ersten Dichte und der Einsatz (31, 50, 60) aus einem Material mit einer zweiten Dichte, welche geringer als die erste Dichte ist.

Hand-held machine tool

Die erfindungsgemäße Handwerkzeugmaschine mit einem pneumatischen Schlagwerk hat einen motorgetriebenen Erreger ( 12 ), ein Führungsrohr ( 20 ) und einen kolbenförmigen Schläger ( 13 ). Der kolbenförmige Schläger ( 13 ) ist durch eine Innenfläche ( 21 ) des Führungsrohrs ( 20 ) längs einer Arbeitsachse ( 10 ) geführt und schließt in dem Führungsrohr ( 20 ) mit dem Erreger ( 12 ) eine Luftfeder ( 15 ) abschließt ab. Der Schläger ( 13 ) hat einen topfförmigen Grundkörper ( 30 ) mit einem dem Erreger ( 12 ) zugewandt offenen Hohlraum und einem den Hohlraum ausfüllenden Einsatz ( 31 , 50 , 60 ) ( 31 ). Der Grundkörper (3 0) ist aus einem ersten Material mit einer ersten Dichte und der Einsatz ( 31 , 50 , 60 ) aus einem Material mit einer zweiten Dichte, welche geringer als die erste Dichte ist.

Hand-held power tool

The power tool has a tool holder (2) for holding a chiselling tool on a working axis (11), a motor (5), and a pneumatic percussion mechanism (6) driven by the motor (5). The percussion mechanism (6) has a percussion element (14) guided on the working axis (11) and provided with a percussion surface (23) pointing in the percussion direction (12), an exciter piston (13) driven by the motor (5), and a pneumatic chamber (18) formed between the exciter piston (13) and the percussion element (14) for coupling the percussion element (14) to the movement of the exciter piston (13). The percussion element (14) has a first partial body (35) forming the percussion surface (23), a second partial body (34), and a spring element (33). The first partial body (35) is moveable along the working axis (11) relative to the second partial body (35). The second partial body (34) has an abutment surface (37) pointing in the percussion direction (12). The first partial body (35) has an impact surface (36) opposite the abutment surface (37) for receiving an impact of the second partial body (34) on the first partial body (35). The spring element (33) drives the first partial body (35) relative to the second partial body (34) in the percussion direction (12) into a starting position, in which the abutment surface (37) is separated from the impact surface (36) by a gap (32).

Hand held power machine

工具机具有用于容纳在工作轴线(11)上凿取用工具的工具容纳部(2)、驱动器(5)和由驱动器(5)驱动的气动撞击机构(6)。撞击机构具有在工作轴线(11)上被引导的且设有朝冲击方向(12)的冲击面(23)的撞击器(14)、由驱动器(5)驱动的激励活塞(13)和构造在激励活塞(13)和撞击器(14)间的用于使撞击器(14)与激励活塞(13)的运动耦合的气动腔(18)。撞击器(14)具有构成冲击面(23)的第一子体(35)，第二子体(34)和弹簧元件(33)。第一子体(35)相对于第二子体(34)沿着工作轴线(11)可运动。第二子体(34)具有朝冲击方向(12)的碰撞面(37)。第一子体(35)具有与碰撞面(37)对置的挡面(36)用于容纳第二子体(34)到第一子体(35)上的冲击。弹簧元件(33)驱使第一子体相(35)相对于第二子体(34)沿着冲击方向(12)到碰撞面(37)与挡面(36)通过间隙(32)分开的原始位置中。

Hammering device for drilling and/or chipping hammer, has elastic element arranged between driving unit and racket and formed from elastomer material, where elastic element presses racket against flapping direction opposite to driving unit

Die Erfindung geht aus von einer Schlagwerkvorrichtung, insbesondere für einen Bohr- und/oder Meißelhammer (10), mit zumindest einem Mitnehmer (12) und zumindest einem Schläger (14). Es wird vorgeschlagen, dass zumindest ein elastisches Element (16) angeordnet ist.

Hand-held power tool

The chisel-action hand-held power tool (1) according to the invention has a tool holder (2), an electric motor (8), a hammer mechanism (4) and an idle impact take-up (30). The tool holder (2) can receive a tool (3) and movably mount said tool on a work axis (7). The hammer mechanism (4) contains an actuator piston (13), a hammer (14), a snap hammer (15) and a guide (21) for said snap hammer. The actuator piston (13) is coupled to the electric motor. The guide (21) guides the snap hammer (15) on the work axis (7). The idle-impact take-up (30) for the snap hammer (15) has a conical inner surface (37) facing the snap hammer (15). The snap hammer (15) has a corresponding end face (31) pointing in the hammer direction (5). The end face (31) rests against the conical inner surface (37), when the snap hammer (15) is in its most advanced position in the hammer direction (5). The end face (31) of the snap hammer (15) has a first segment (33) and a second segment (34) around its periphery (32). The second segment (34) is offset relative to the first segment (33) in the hammer direction (5).

Drill

FIELD: process engineering. SUBSTANCE: invention relates to hand-held machine, particularly, to drills. Drill comprises housing, piston cylinder, helical spring, countershaft and impact transfer element located at countershaft rear end. Helical spring is arranged inside said housing, behind piston cylinder, to force the latter forward with working drill. Impact transfer element comprises section to revolve independently of counter shaft and joint lever. Said element converts countershaft rotation into reciprocation to be transferred to piston cylinder. Support plate is arranged at piston cylinder rear end. Said support plate includes to side plates with front edges, rear edges and holes, and base section to connected side plate front ends. Support plate base section stays in contact with piston cylinder rear surface. Side plate rear ends stay in contact with helical spring front end. Side plate holes are configured to retain pin with joint lever hinged thereto. EFFECT: longer life of piston cylinder. 12 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 487 795 (13) C2 (51) МПК B25D 16/00 B25D 11/06 B25D 17/06 (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009125389/02, 02.07.2009 (24) Дата начала отсчета срока действия патента: 02.07.2009 (72) Автор(ы): МАТИДА Йоситака (JP), ЙОСИКАНЕ Кийонобу (JP) (73) Патентообладатель(и): МАКИТА КОРПОРЕЙШН (JP) R U Приоритет(ы): (30) Конвенционный приоритет: 03.07.2008 JP 2008-174767 (43) Дата публикации заявки: 10.01.2011 Бюл. № 1 2 4 8 7 7 9 5 (45) Опубликовано: 20.07.2013 Бюл. № 20 (56) Список документов, цитированных в отчете о поиске: EP 1422028 A1, 26.05.2004. RU 2200816 C2, 20.03.2003. RU 2064403 C1, 27.07.1996. EP 1652629 A1, 03.05.2006. 2 4 8 7 7 9 5 R U (54) ПЕРФОРАТОР (57) Реферат: Изобретение относится к ручным машинам, а именно к перфораторам. Перфоратор содержит корпус, поршневой цилиндр, винтовую пружину, промежуточный вал и ...

Percussion piston

파일럿 실린더 (3), 분배기 (4) 및 압력 매체를 포함하는 착암기 (2) 용의 타격 피스톤 (1) 은 타격 피스톤이 파일럿 실린더와 관련하여 충격 방향 (A) 으로 이동할 때에, 타격 피스톤 (1) 의 축방향에 평행한 방향으로 분배기 (4) 의 위치에서의 변경을 행하도록 구성가능한 컨트롤 에지 (5) 를 포함한다. 타격 피스톤의 컨트롤 에지 (5) 는 컨트롤 에지의 외부 주변 (7) 상에 제공되고, 타격 피스톤의 컨트롤 에지가 분배기 또는 파일럿 실린더 상에 제공된 제 2 컨트롤 에지 (8) 를 통과하기 전에 분배기 (4) 에 대해 상태 변경의 시작을 야기하도록 배열가능한 적어도 하나의 노치 (6) 를 포함한다.  The striking piston 1 for the pilot cylinder 3, the distributor 4 and the rocker arm 2 including the pressure medium is displaced in the direction of impact A relative to the pilot cylinder, And a control edge 5, which is configurable to effect a change in the position of the distributor 4 in a direction parallel to the axial direction of the distributor 4. The control edge 5 of the striking piston is provided on the outer periphery 7 of the control edge and the control edge of the striking piston is connected to the distributor 4 before passing through the second control edge 8 provided on the distributor or pilot cylinder. And at least one notch (6) arranged to cause the start of a state change to be effected.

Air-spring percussive tool

КОМПРЕССИОННО-ВАКУУШАЯ МАШИНА УДАРНОГО ДЕЙСТВИЯ, содержаща  корпус, раэмаценные в нем привод, нагнетательную систему в виде силового цилиндра, поршень которого соединен с приводом, и ударную систему в виде цилиндра с поршнем-ударником, оси цилиндров параллельны, отличающа с  тем, что, с целью снижени  уровн  вибрации и повьшени  надежности работы при низких температурах , она снабжена трем  дополнительными силовыми цилиндрами, расположенными в корпусе с основным силовым цилиндром попарно симметрично относительно оси цилиндра ударной системы , подпоршневые полости пар силовых цилиндров сообщены соответственно с надпоршневой и подпоршневой полост 1ми цилиндра ударной системы и пары «( поршней соединены с приводом противо ;фазно, a последний имеет систему противовесов , симметрично расположенную относительно оси цилиндра ударной 1системы., A COMPRESSIONAL VACUUM MACHINE OF SHOCK ACTION, comprising a housing, a drive in it, a pressure system in the form of a power cylinder, the piston of which is connected to the drive, and a shock system in the form of a cylinder with a piston-impactor, the axes of the cylinders are parallel, characterized by the fact that in order to reduce the level of vibration and improve reliability at low temperatures, it is equipped with three additional power cylinders located in a housing with the main power cylinder in pairs symmetrically with respect to the axis of the cylinder beats The arcs of the system, the piston cavities of the pairs of power cylinders are communicated respectively with the supra piston and sub piston cavities of the 1st cylinder of the shock system and the pair "(the pistons are connected to the drive counter; phase-wise, the latter has a system of counterweights symmetrically located relative to the axis of the cylinder of the shock 1 system.,

Linearly driven and air-cooled boring and/or percussion hammer

一种冲击钻和/或者冲击锤，具有一个电动直线驱动装置和一个空气弹簧冲击机构，冲击机构中安装有一个可在直线驱动装置作用下往复运动的驱动活塞(1)、一个冲击活塞(3)、以及一个形成于驱动活塞和冲击活塞之间的空气弹簧(7)。供气装置具有一个可以直线往复运动，用于产生空气流的泵元件(13)。泵元件(13)以适当方式与驱动活塞(1)联接在一起，从而可以将驱动活塞(1)的运动传递给泵元件(13)。这样就可以通过气道(15)输送用于冷却发热构件(12)的冷却空气。

SHOCK MECHANISM OF THE HAMMER TYPE

1. Ударный механизм молоткового типа, включающий в себя переходник (102а-102е), вал (32а-32е) привода патрона и узел (118а) отключения генерации ударов, содержащий стопорный элемент (120а), предусмотренный для препятствования осевому перемещению переходника (102а-102е), отличающийся тем, что стопорный элемент (120а) по меньшей мере в режиме чистого сверления действует на переходник (102а-102е) параллельно меньшей мере одному усилию со стороны вала (32а-32е) привода патрона.2. Ударный механизм по п.1, отличающийся тем, что узел (118а) отключения генерации ударов содержит кулисную направляющую (122а), предусмотренную для перемещения стопорного элемента (120а).3. Ударный механизм по п.1, отличающийся тем, что узел (118а) отключения генерации ударов содержит орган (28а) управления, установленный с возможностью поворота.4. Ударный механизм по п.1, отличающийся наличием корпусного элемента (132а), предусмотренного в качестве опоры для установки стопорного элемента (120а) с фиксацией от проворачивания.5. Ударный механизм по п.1, отличающийся наличием бойка (94а-94е), установленного на валу (32а-32е) привода патрона с предусмотренной по меньшей мере в одном режиме работы возможностью перемещения в направлении (98а) удара.6. Ударный механизм по п.5, отличающийся тем, что вал (32а-32е) привода патрона по меньшей мере частично проходит через боек (94а-94е).7. Ударный механизм по одному из пп.1-6, отличающийся наличием опоры (60а), предусмотренной для установки вала (32а-32е) привода патрона с возможностью осевого перемещения.8. Ударный механизм по одному из пп.1-6, отличающийся наличием планетарного механизма (30а), который по меньшей мере в одном режиме работы приводит во вращение вал (32а-3 РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК B25D 16/00 (13) 2011 148 255 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011148255/12, 28.11.2011 (71) Заявитель(и): РОБЕРТ БОШ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет ...

Electric impact hammer

An electric impact hammer (100), comprising an output shaft (511), an air cylinder (531) and a piston (21) located inside the air cylinder (531), wherein the air cylinder (531) drives the piston (21) to rotate together; the piston (21) is provided with an accommodating groove penetrating the rear end surface thereof and a pair of through holes which are in communication with the accommodating groove and penetrate the periphery thereof; the front end of the output shaft (511) is inserted into the accommodating groove, and the output shaft (511) is provided with a wave-shaped groove (511c) located in the periphery of the front end, and steel balls (21a) accommodated in the wave-shaped groove (511c); the wave-shaped groove (511c) is connected end to end along the periphery of the output shaft (511), and is provided with an axial front end and an axial rear end; and the other parts of the steel balls (21a) are accommodated in the through holes, and the output shaft (511) drives the piston (21) to reciprocate in the axial direction by means of the steel balls (21a).

chlagwerkvorrichtung

Die Erfindung geht aus von einer Schlagwerkvorrichtung, insbesondere für einen Bohr- und/oder Meißelhammer, mit zumindest einem Schläger (12), mit zumindest einem Schlagbolzen (14), der zumindest eine dem Schläger (12) zugewandte Führungsnase (16) aufweist, und mit zumindest einer beweglich gelagerten Steuerscheibe (18), die um die Führungsnase (16) angeordnet ist. Es wird vorgeschlagen, dass ein Ende (20) der Führungsnase (16) in jedem Betriebszustand über die Steuerscheibe (18) hinausragt. The invention relates to a percussion device, in particular for a drill and / or chisel, with at least one racket (12), with at least one striker (14), the at least one of the racket (12) facing guide nose (16), and with at least one movably mounted control disk (18) which is arranged around the guide nose (16). It is proposed that one end (20) of the guide nose (16) projects beyond the control disk (18) in each operating state.

PERFORATOR HAMMER AND BURINER DRIVEN BY INTERNAL COMBUSTION ENGINE

L'invention concerne un marteau perforateur et burineur comportant un mécanisme de percussion et un moteur à combustion interne. Le marteau est caractérisé en ce que la manivelle 7 du mécanisme de percussion est disposée dans un volume la séparé des autres parties du marteau, comportant une soupape d'admission 11 et relié, par l'intermédiaire d'un orifice de décharge 1d, aux lumières d'admission le du moteur débouchant dans la chambre de combustion. Application aux outils portatifs de chantier. The invention relates to a hammer drill and chisel comprising a percussion mechanism and an internal combustion engine. The hammer is characterized in that the crank 7 of the percussion mechanism is arranged in a volume 1a separate from the other parts of the hammer, comprising an inlet valve 11 and connected, via a discharge port 1d, to the intake lights of the engine opening into the combustion chamber. Application to portable construction tools.

PERCUSSION APPARATUS

Cet appareil à percussions (2) comporte un corps (3) ; un outil (7) comportant une partie de montage (8) montée coulissante dans le corps (3) ; et un piston de frappe (6) monté déplaçable de façon alternative dans le corps (3) et configuré pour venir frapper la partie de montage (8). La partie de montage (8) de l'outil (7) comporte une nervure de retenue annulaire (24) comportant une première surface d'appui configurée pour coopérer avec une première surface de butée prévue sur le corps (3) de manière à limiter la course de déplacement de l'outil (7) vers le piston de frappe (6), et une deuxième surface d'appui opposée à la première surface d'appui et configurée pour coopérer avec une deuxième surface de butée prévue sur le corps (3) de manière à limiter la course de déplacement de l'outil (7) à l'opposé du piston de frappe (6) et à retenir la partie de montage (8) de l'outil (7) dans le corps (3). This percussion apparatus (2) comprises a body (3); a tool (7) having a mounting portion (8) slidably mounted in the body (3); and a striking piston (6) mounted alternately movable in the body (3) and configured to strike the mounting portion (8). The mounting portion (8) of the tool (7) has an annular retaining rib (24) having a first bearing surface configured to cooperate with a first abutment surface provided on the body (3) to limit the movement of movement of the tool (7) towards the striking piston (6), and a second bearing surface opposite to the first bearing surface and configured to cooperate with a second abutment surface provided on the body ( 3) so as to limit the movement of movement of the tool (7) away from the striking piston (6) and to retain the mounting portion (8) of the tool (7) in the body (3). ).

ROCK BRISE DEVICE

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).

PERCUSSION APPARATUS WITH A GUIDE BEARING EQUIPPED WITH A CENTERING DEVICE

Cet appareil à percussions (2), comporte un piston de frappe (5) monté déplaçable à l'intérieur d'un cylindre de piston (4) et agencé pour venir percuter un outil (6) ; et un palier de guidage (15) comprenant une surface de guidage (16) configurée pour guider le piston de frappe (5) lors des déplacements du piston de frappe (5) dans le cylindre de piston (4). Le palier de guidage (15) comporte un dispositif de centrage (17) configuré pour centrer le piston de frappe (5) dans le cylindre de piston (4), le dispositif de centrage (17) comprenant des chambres de centrage (18) ménagées dans la surface de guidage (16) et réparties autour du piston de frappe (5), chaque chambre de centrage (18) étant reliée fluidiquement à un circuit d'alimentation en fluide haute pression (12) ; et au moins une rainure d'évacuation (22) ménagée dans la surface de guidage (16) du palier de guidage (15) et située à proximité d'au moins l'une des chambres de centrage (18), l'au moins une rainure d'évacuation (22) étant reliée fluidiquement à un circuit basse pression (13). This percussion apparatus (2) comprises a striking piston (5) movably mounted inside a piston cylinder (4) and arranged to strike a tool (6); and a guide bearing (15) comprising a guide surface (16) configured to guide the striking piston (5) during movements of the striking piston (5) in the piston cylinder (4). The guide bearing (15) comprises a centering device (17) configured to center the striking piston (5) in the piston cylinder (4), the centering device (17) comprising centering chambers (18) arranged in the guide surface (16) and distributed around the striking piston (5), each centering chamber (18) being fluidly connected to a high-pressure fluid supply circuit (12); and at least one discharge groove (22) formed in the guide surface (16) of the guide bearing (15) and located near at least one of the centering chambers (18), the at least one an evacuation groove (22) being fluidly ...

Hand-held drill with a compressed air-operated hammer mechanism

A hand drill including a housing ( 2 ), a rotary drive ( 8-15 ) arranged in the housing ( 2 ) for driving a chuck ( 6 ) provided at a front, in the drilling direction, end of the housing and in which a drill or a chisel tool is received, a compressed air-operated hammer mechanism having a pneumatic cylinder ( 22 ), a die member ( 15 ) for imparting axial blows to the drill or chisel tool, and a percussion piston ( 30 ) displaceable in the pneumatic cylinder 922 ) upon being impinged by compressed air for intermittently applying axial blows to the die member ( 15 ), and a reversing valve for connecting the hammer mechanism ( 22 ) with a source of compressed air, integrated in the percussion piston ( 30 ), and having a plurality of recesses and bores ( 46-52 ) alternatively operationally connectable with at least one inlet opening ( 23 ) and at least one discharge opening ( 24 ) of the pneumatic cylinder ( 22 ) for feeding the compressed air into the pneumatic cylinder ( 22 ) and for discharging the compressed air therefrom.

BORRNINGS- OCH MEJSELHAMMARE MED FOERBRAENNINGSMOTORDRIFT

A pulse generating device and a rock drilling rig comprising such a device

The present invention relates to a pulse generating device for inducing a shock wave in a tool, wherein the said pulse generating device comprises an impact means (201; 301) for transferring energy to a drill string (202) connected to the said tool, and wherein the energy transfer gives rise to the said shock wave, in which the said energy is mainly constituted by elastic energy stored in the impact means (201; 301) and/or an energy store. The device comprises control means for controlling the interaction of the impact means (201; 301) with the drill string (202), wherein the said control means for controlling the interaction of the impact means (201; 301) with the drill string (202) comprises a motor (207; 307), and wherein the said motor (207; 307) is designed to, through rotation, alternately open ducts for pressurization and depressurization of at least one drive surface (205) acting upon the said impact means. The invention is characterized in that the rotation axis of the said motor (207; 307) is arranged substantially coaxially with the drill string (202).

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 breaking apparatus

本发明涉及一种岩石破碎设备(10)，其包括具有至少一个致动室(14)的撞击单元(12)、撞击活塞(16)、以及液压回路，所述液压回路包括具有高压回路(17)和低压回路(18)的液压供给源、以及被配置为将高压回路(17)或低压回路(18)连接至致动室(14)以便在正常移动区域中在撞击单元(12)中平移活塞的致动器(20)，所述正常移动区域的边限可根据高压回路(17)与低压回路(18)之间的压力差而变化，撞击单元(12)包括减压装置，所述减压装置被配置为当撞击活塞(16)离开预定的移动区域时控制高压回路(17)与低压回路(18)之间的液压连通的建立。

Patent FR2433632B1

Hydraulic punching apparatus of low noise type

The present invention relates to a hydraulic punching apparatus, and more specifically, to a low noise type hydraulic punching apparatus which has an impact bar which is accommodated in a piston to prevent the impact bar from coming in contact with the inside of the piston and is inclined to prevent cracks. The apparatus reduces noise and improves heat radiating performance by installing a noise insulating material or a heat sink inside the piston or outside the impact bar.

Handheld drilling machine with compressed-air-operated percussion mechanism

Ein Handbohrgerät weist ein drucklufterregtes Schlagwerk zur Erzeugung von axialen Schlägen auf, das über ein Schaltventil mit einer Druckluftquelle verbunden ist. Das Schlagwerk (21) umfasst einen Pneumatikzylinder (22), der wenigstens eine Belüftungs-und wenigstens eine Entlüftungsbohrung (23, 24) aufweist. Innerhalb des Pneumatikzylinders (22) ist ein Schlagkolben (30) geführt, der mit Druckluft beaufschlagbar und periodisch gegen ein Döpperelement (15) beschleunigbar ist. Das Döpperelement (15) durchsetzt eine vordere Begrenzungswand (25) des Pneumatikzylinders (22) axial und dient der Übertragung von axialen Schlägen an ein in eine Werkzeugaufnahme eingespanntes Bohr- oder Meisselwerkzeug. Ein im Gehäuse angeordneter Drehantrieb erlaubt eine Rotation des in die Werkzeugaufnahme eingespannten Bohr- oder Meisselwerkzeugs um seine Achse. Das Schaltventil ist im Schlagkolben integriert und weist Aussparungen und Bohrungen (46 - 52) auf, die abwechselnd mit der Be- bzw. der Entlüftungsbohrung (23, 24) im Pneumatikzylinder (22) in Wirkverbindung bringbar sind. A hand drill has an air-powered hammer mechanism for generating axial impacts, which is connected to a compressed air source via a switching valve. The striking mechanism (21) comprises a pneumatic cylinder (22) which has at least one ventilation and at least one ventilation hole (23, 24). A percussion piston (30) is guided within the pneumatic cylinder (22) and can be pressurized with compressed air and periodically accelerated against a striking element (15). The striking element (15) passes axially through a front boundary wall (25) of the pneumatic cylinder (22) and is used to transmit axial impacts to a drilling or chiseling tool clamped in a tool holder. A rotary drive arranged in the housing allows the drilling or chisel tool clamped in the tool holder to rotate about its axis. The switching valve is integrated in the percussion piston and has cutouts and bores (46 - 52), which can alternately be brought ...

Hammer

本发明包括用于锤、电锤或具有锤击作用的动力钻中的撞锤的往复驱动机构，其利用在驱动元件上形成的正弦凸轮槽和连接于从动元件的球轴承形式的凸轮从动件，由于凸轮和凸轮从动件的相互作用引起从动元件的往复运动。驱动元件和从动元件都能被马达转动地驱动，它们的相对速度引起从动元件的往复运动。从动元件经过螺旋弹簧或者气弹簧连接于撞锤。

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<dmax, and has a width wa that during the contact moment with the impulse receiving part is less than 0.2dmax.

Hand machine tool striking mechanism unit

本发明涉及手持式工具机冲击机构单元，它具有一个冲击器单元(10a～10k)，该冲击器单元可借助一个活塞(12a～12k)通过一个气体容积(14a～14k)来驱动。本发明提出：由最大的冲击器单元面延伸量(16a～16k)的三次方除以冲击器单元质量(18a～18k)构成的冲击机构特征参数(Sa～Sk)大于200mm 3 /g，优选大于220mm 3 /g且特别优选大于240mm 3 /g。

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.

Hand-held power tool comprising a spring unit

The invention relates to a hand-held power tool, especially a hammer drill and/or chipping hammer, comprising a drive unit (10) and a percussion unit (12) which has a gear unit (14a, 14b, 14c) and a bidirectionally displaceable piston (18) that can be driven by the drive unit (10). The invention is characterized in that at least one spring unit (22a to 22j) is mounted in the effective direction between the drive unit (10) and the piston (18).

Percussion device

The invention relates to a percussion device having a frame (2), a tool (5) mounted movable in its longitudinal direction, the percussion device containing a work chamber (3) having a movably mounted transmission piston (4) to compress the tool (5) so that a longitudinal stress pulse is generated to the tool (5), inlet and outlet channels (7, 9) for conducting the pressure fluid to the percussion device and away from it and a control valve (8) that alternately directs the pressure fluid from the inlet channel (7) to the work chamber (3) to act on the transmission piston (4) and, correspondingly, discharges the pressure fluid from the percussion device. The percussion device and transmission piston (4) have channels (8c, 17, 18) that connect the pressure fluid that acted on the transmission piston (4) to flow during the return movement of the transmission piston (4) through the control valve (8) and transmission piston (4) to the pressure fluid outlet channel (9) and cut off the flow when the transmission piston (4) has returned to its initial position.

Hand-held hammer drill

Handgeführter Bohrhammer, – mit einer Spindel (3), die im Bohrbetrieb eine Werkzeugaufnahme (5) um eine Rotationsachse (6) rotierend antreibt, – mit einem pneumatischen Schlagwerk (4), das im Schlagbetrieb gegen ein in die Werkzeugaufnahme (5) eingesetztes Werkzeug hämmert, – wobei das Schlagwerk (4) einen Kolben (10) aufweist, der im Schlagbetrieb in einem in der Spindel (3) ausgebildeten Zylinder (11) Hubbewegungen (12) parallel zur Rotationsachse (6) ausführt, – wobei der Kolben (10) zumindest eine Ringnut (21) aufweist, in der eine Ringdichtung (22) angeordnet ist, – wobei die Ringnut (21) ein Querschnittsprofil (24) aufweist, das parallel zur Rotationsachse (6) größer ist als ein Querschnittsprofil (27) der Ringdichtung (22), dadurch gekennzeichnet, dass das Querschnittsprofil (24) der Ringnut (21) am Nutgrund (26) einen Bereich (31) mit einem Maximalabstand (32) vom Zylinder (11) und zumindest einen Bereich (33, 34) mit kleineren Abständen (35) vom Zylinder (11) aufweist, die kleiner sind als der Maximalabstand (32). Hand-held hammer drill, - with a spindle (3) which rotates a tool holder (5) around a rotation axis (6) during drilling operation, - with a pneumatic hammer mechanism (4), which strikes against a tool inserted into the tool holder (5) - the hammer mechanism (4) has a piston (10) which executes stroke movements (12) parallel to the axis of rotation (6) in a cylinder (11) formed in the spindle (3), - the piston (10 ) has at least one annular groove (21), in which an annular seal (22) is arranged, - the annular groove (21) having a cross-sectional profile (24) which is larger than a cross-sectional profile (27) of the ring seal parallel to the axis of rotation (6) (22), characterized in that the cross-sectional profile (24) of the annular groove (21) on the groove base (26) has an area (31) with a maximum distance (32) from the cylinder (11) and at least one area (33, 34) with smaller ones Distances (35) from the cylinder (11) a kleiner that are ...

Pressed air drive type

A pulse generating device and a rock drilling rig comprising such a device

本发明涉及一种用于在工具中产生冲击波的脉冲发生装置，其中，所述脉冲发生装置包括用于将能量传递到与所述工具连接的钻杆(202)的冲击器件(201；301)，其中能量传递引起所述冲击波，其中所述能量主要由存储在冲击器件(201；301)和/或能量存储器中的弹性能构成。所述脉冲发生装置包括用于对冲击器件(201；301)与钻杆(202)之间的相互作用进行控制的控制器件，其中用于对冲击器件(201；301)与钻杆(202)之间的相互作用进行控制的所述控制器件包括马达(207；307)，所述马达(207；307)被设计成通过旋转使通道交替地打开以对作用于所述冲击器件(201；301)的至少一个驱动表面(205)进行加压和减压。本发明的特征在于，所述马达(207；307)的旋转轴线被布置成与钻杆(202)基本上同轴。

Rotary hammer

一种回转锤,包括:一工具柄;一个空气缓冲锤击机构,其中包含一活塞,一可滑动设在汽缸中的冲击件,活塞在汽缸中的往复运动使冲击件冲击工具柄中的工具;一装置,该装置除产生活塞的往复运动还产生汽缸的回转运动,使工具柄中的工具回转。活塞由塑料材料制成并通过环形密封件密封在汽缸中,环形密封件位于活塞的环形槽中。环形密封件的内径比槽的径向向外表面的直径大,槽的轴向尺寸比环形密封件的轴向尺寸大。当汽缸绕活塞回转(活塞不往复运动)时,密封件随汽缸一起回转。

Linearly driven and air-cooled boring and/or percussion hammer

The invention relates to a boring and/or percussion hammer comprising an electrodynamic linear drive and a pneumatically damped percussion mechanism which is provided with a drive piston (1) driven by the linear drive during the reciprocating movement thereof, an impact piston (3) and a pneumatic spring (7) arranged between the drive and impact pistons. An air-supply device comprises a pumping element (13), which is linearly forth and back movable for generating airflow. The pumping element (13) is connected to the drive piston (1) in such a way that the movement thereof is transmitted to said pumping element (13), thereby the cooling air is transported by an air channel (15) for cooling heat generated elements (12).

Cordless power tool

一种手持工具机，所述手持工具机具有驱动装置和气动冲击机构。所述冲击机构包括可在作业轴线上运动的冲击锤、通过连杆(17)连接到驱动装置上的激励活塞以及将冲击锤的运动耦联到激励活塞上的气动室。所述连杆(17)可绕枢转轴线(27)枢转地悬挂在激励活塞中。密封环(25)在平面中环绕夹紧激励活塞的周面(23)。枢转轴线(27)位于该平面中。

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.

Hand-held power tool

ROCK BRISE DEVICE

L'invention concerne un dispositif brise roches (10) comportant une cellule de frappe (12) présentant au moins une chambre d'actionnement (14), un piston de frappe (16), et un circuit hydraulique comportant une source d'alimentation hydraulique présentant un circuit Haute Pression (17) et un circuit Basse Pression (18), et un actionneur (20) configuré pour relier le circuit Haute Pression (17) ou le circuit Basse Pression (18) à la chambre d'actionnement (14) de sorte à déplacer le piston en translation dans la cellule de frappe (12) dans une zone de déplacement normale dont les limites sont variables en fonction de la différence de pression entre le circuit Haute Pression (17) et le circuit Basse Pression (18), la cellule de frappe (12) comportant des moyens de dépressurisation configurés pour commander une mise en communication hydraulique du circuit Haute Pression (17) avec le circuit Basse Pression (18) lorsque le piston de frappe (16) sort d'une zone de déplacement prédéterminée. A rock breaking device (10) having a striking cell (12) having at least one actuating chamber (14), a striking piston (16), and a hydraulic circuit including a hydraulic power source having a high pressure circuit (17) and a low pressure circuit (18), and an actuator (20) configured to connect the high pressure circuit (17) or the low pressure circuit (18) to the actuating chamber (14) so as to move the piston in translation in the striking cell (12) in a normal displacement zone whose limits are variable as a function of the pressure difference between the high pressure circuit (17) and the low pressure circuit (18) , the striking cell (12) comprising depressurization means configured to control a hydraulic communication of the High Pressure circuit (17) with the low pressure circuit (18) when the striking piston (16) leaves a zone of pre displacement determined.

Hand-held power tool

Eine Handwerkzeugmaschine hat einen Antrieb und ein pneumatisches Schlagwerk. Das Schlagwerk beinhaltet einen auf einer Arbeitsachse beweglichen Schläger, einen durch ein Pleuel (17) an den Antrieb angebundenen Erregerkolben und eine pneumatische Kammer, die eine Bewegung des Schlägers an den Erregerkolben ankoppelt. Das Pleuel (17) ist um eine Schwenkachse (27) schwenkbar in dem Erregerkolben aufgehängt. Ein Dichtring (25) umspannt in einer Ebene eine Mantelfläche (23) des Erregerkolbens. Die Schwenkachse (27) liegt in der Ebene.

Method and device for reducing pressure peaks in a hand-held power tool with electropneumatic impact mechanism

Percussion apparatus moved by an incompressible fluid under pressure

Aparato de percusión movido por un fluido incompresible a presión, que comprende: - un cuerpo (2) en cuyo interior están dispuestos dos orificios mecanizados coaxiales: un orificio mecanizadoque sirve para el montaje deslizante de una herramienta (3) y un orificio mecanizado escalonado, es decir,que comprende unas secciones sucesivas diferentes, que forma un cilindro para un pistón escalonado (1),siendo el pistón desplazable de manera alternativa en el interior del cilindro (2) y viniendo a percutir, en elcurso de cada ciclo, la herramienta (3), delimitando el pistón con el cilindro por lo menos una cámara alta (5)y una cámara baja (4) alimentadas de manera secuencial por fluido incompresible a alta presión, bajo laacción de un distribuidor (6), - una red de canales que desembocan en el cilindro, de los cuales algunos pueden, según su función, estarunidos a través del distribuidor (6) a las redes de alta presión (7) y/o baja presión (8), según el instanteconsiderado del ciclo de funcionamiento, - un dispositivo de pilotaje que permite hacer variar la carrera del pistón de percusión entre una carrera larga yuna carrera corta, y viceversa, comprendiendo el dispositivo de pilotaje un cilindro en el que está montadauna corredera (12, 30, 37, 42, 48, 57, 58), y en el que desembocan por lo menos un canal (13) unido aldistribuidor (6) y un canal (14) que desemboca asimismo en el cilindro del pistón de percusión (1) ysusceptible de ser puesto en comunicación con la cámara baja (4) en el curso del movimiento dedesplazamiento del pistón de percusión hacia arriba, - una cámara de frenado (10) dispuesta en una zona del cilindro para el pistón escalonado (1) situada por ellado de la herramienta, susceptible de ser cerrada por un reborde (23) del pistón cuando el pistón (1)sobrepasa su posición teórica de percusión, en el que una primera cara de la corredera (12, 30, 37, 42, 48, 57, 58) montada en el cilindro del dispositivo depilotaje está situada en una primera cámara (17, 32, ...

Hand-held power tool

The power tool has a tool holder (2) for holding a chiselling tool on a working axis (11), a motor (5), and a pneumatic percussion mechanism (6) driven by the motor (5). The percussion mechanism (6) has a percussion element (14) guided on the working axis (11) and provided with a percussion surface (23) pointing in the percussion direction (12), an exciter piston (13) driven by the motor (5), and a pneumatic chamber (18) formed between the exciter piston (13) and the percussion element (14) for coupling the percussion element (14) to the movement of the exciter piston (13). The percussion element (14) has a first partial body (35) forming the percussion surface (23), a second partial body (34), and a spring element (33). The first partial body (35) is moveable along the working axis (11) relative to the second partial body (35). The second partial body (34) has an abutment surface (37) pointing in the percussion direction (12). The first partial body (35) has an impact surface (36) opposite the abutment surface (37) for receiving an impact of the second partial body (34) on the first partial body (35). The spring element (33) drives the first partial body (35) relative to the second partial body (34) in the percussion direction (12) into a starting position, in which the abutment surface (37) is separated from the impact surface (36) by a gap (32).

Rotary hammer

A hammer that is capable or receiving a tool bit (30) for acting on a workpiece, and includes an air cushion hammering mechanism and an arrangement for arresting the impact member (12) in its forward position, which comprises a resilient ring (52) that is located within the cylinder (2) and extends around the impact member, the impact member (12) having an intermediate portion (100) of varying diameter so that, at a given position of the impact member in the cylinder, the intermediate portion (100) of the impact member touches the resilient ring (52) and a substantially closed chamber is formed within the cylinder (2) that extends around the resilient ring (52), further forward movement of the impact member reducing the volume of the chamber (70) and causing the resilient ring (52) to constrict the impact member. A hammer is also provided in which the bit (30) is retained in the tool holder by means of one or more locking elements (42) and the hammer includes one or more cushioning elements (34,36) located between a tool holder (4) and the housing (1) so that impacts that are reflected by the workpiece back along the bit (30) are transmitted to the housing via the tool holder (4) and the cushioning element(s) (34,36).

Percussion device

本发明涉及带有冲击机构壳体的冲击装置，该冲击机构壳体具有接纳孔，冲击活塞被安装在该接纳孔中而使得该冲击活塞是沿着纵向轴线可移动的，其中在该接纳孔中形成了具有内直径的至少一个冲击机构引导表面并且在该冲击活塞上形成了具有外直径的至少一个冲击活塞引导表面。为了尽可能避免该冲击活塞与该冲击机构壳体之间的径向接触、为了减小经由引导表面的空隙造成的油泄露体积并且为了防止引导表面上以及密封件之间的凸台上的磨损，根据本发明该冲击机构引导表面至少在一些区域中具有在轴向方向上非线性地增加的内直径和/或该冲击活塞引导表面具有在轴向方向非线性地减小的外直径。

Percussion device

The invention relates to a percussion device having a frame, a tool mounted movable in its longitudinal direction, the percussion device containing a work chamber having a movably mounted transmission piston to compress the tool so that a longitudinal stress pulse is generated to the tool, inlet and outlet channels for conducting the pressure fluid to the percussion device and away from it and a control valve that alternately directs the pressure fluid from the inlet channel to the work chamber to act on the transmission piston and, correspondingly, discharges the pressure fluid from the percussion device. The percussion device and trans-mission piston have channels that connect the pressure fluid that acted on the transmission piston to flow during the return movement of the transmission piston through the control valve and transmission piston to the pressure fluid outlet channel and cut off the flow when the transmission piston has returned to its initial position.

Manually-operated hammer drill

The hammer has a rammer (4) comprising a piston (10) that executes a stroke movement (12) in a cylinder (11) formed in a spindle (3). The piston comprises an annular groove in which an annular seal is arranged. The annular groove comprises a cross sectional profile, that is larger than a cross sectional profile of the annular seal parallel to axis of rotation (6). The profile has an axial region with a maximum spacing of the cylinder at a groove base and another axial region with small distances of the cylinder, where the small distance is smaller than the maximum spacing.

Electric hammer device

Die Erfindung geht aus von einer Elektrohammervorrichtung mit wenigstens einer ersten Hauptdichtungseinheit (10, 30; 10a, 30a), welche dazu vorgesehen ist, einem Entweichen eines Fluids aus einem zumindest von einem Schläger (12; 12a), einem Hammerrohr (14; 14a) und einem Kolben (16; 16a) gebildeten Aufnahmebereich (18; 18a) entgegenzuwirken. The invention is based on an electrohammer device having at least one first main sealing unit (10, 30, 10a, 30a) which is provided for preventing the escape of a fluid from at least one of a racket (12, 12a), a hammer tube (14, 14a). and to counteract a receiving region (18, 18a) formed by a piston (16, 16a). Es wird vorgeschlagen, dass die erste Hauptdichtungseinheit (10, 30; 10a, 30a) als berührungslose Dichtungseinheit ausgebildet ist. It is proposed that the first main sealing unit (10, 30; 10a, 30a) is designed as a contactless sealing unit.

Advanced compressed air hammer

Hand-held machine tool for hammer drilling has connecting rod with first part connected to cam and second part connected to piston

The machine tool (1) has a striker mechanism (3) and a motor (4) in the casing. The striker mechanism has a cam (6) and an activating piston (7) connected to the cam via a connecting rod (21). The connecting rod has a first part (22) connected to the cam, and a second part (23) connected to the piston. There is a coil spring (24) between the first and second parts to damp vibrations which occur in operation.

percussion device

resumo patente de invenção :"dispositivo de percussão". essa invenção refere-se a um dispositivo de percussão equipado com uma caixa do mecanismo de percussão, e dispõe de um orifício de alojamento no qual está alojado, de modo a poder se deslocar axialmente no sentido do comprimento, um êmbolo de percussão, em que o orifício de alojamento dispõe de, pelo menos, uma superfície de guiamento do mecanismo de percussão tendo um diâmetro interno, e em que o êmbolo de percussão dispõe de, pelo menos, uma superfície de guiamento do êmbolo de percussão tendo um diâmetro externo. a fim de, na medida do possível, evitar um contato radial entre o êmbolo de percussão e a caixa do mecanismo de percussão, a reduzir o volume de fuga de óleo pela fenda da superfície de guiamento e a impedir o desgaste tanto das superfícies de guiamento, quanto das nervuras entre os vedantes, essa invenção propõe que a superfície de guiamento do mecanismo de percussão, em sua direção axial, se caracterize, pelo menos parcialmente, por um diâmetro interno registrando um aumento não linear e/ou que a superfície de guiamento do êmbolo de percussão registre uma redução não linear de seu diâmetro externo em sua direção axial. patent summary: "percussion device". This invention relates to a percussion device equipped with a percussion mechanism housing, and has a housing hole in which a percussion plunger is housed axially in the lengthwise direction. the housing bore has at least one guiding surface of the percussion mechanism having an inner diameter, and wherein the percussion piston has at least one guiding surface of the percussion piston having an outer diameter. In order to avoid, as far as possible, radial contact between the percussion plunger and the percussion mechanism casing, to reduce the oil leakage volume through the guiding surface slit and to prevent wear of both the guiding surfaces. , how much of the ribs between the seals, this invention proposes that the guiding ...

Percussion device

The invention relates to a percussion device having a frame (2), a tool (5) mounted movable in its longitudinal direction, the percussion device containing a work chamber (3) having a movably mounted transmission piston (4) to compress the tool (5) so that a longitudinal stress pulse is generated to the tool (5), inlet and outlet channels (7, 9) for conducting the pressure fluid to the percussion device and away from it and a control valve (8) that alternately directs the pressure fluid from the inlet channel (7) to the work chamber (3) to act on the transmission piston (4) and, correspondingly, discharges the pressure fluid from the percussion device. The percussion device and transmission piston (4) have channels (8c, 17, 18) that connect the pressure fluid that acted on the transmission piston (4) to flow during the return movement of the transmission piston (4) through the control valve (8) and transmission piston (4) to the pressure fluid outlet channel (9) and cut off the flow when the transmission piston (4) has returned to its initial position.

Linerbolt removal tool improvements

A linerbolt removal tool, including: a housing; a moil supported for reciprocating movement by the housing; an inertial body located within the housing; a gas charged accumulator extending from the inertial body away from the moil; a piston moveable within the inertial body between a striking position at which the piston strikes the moil and a retracted position, whereby firing the piston from its retracted position to its striking position includes causing pressurised gas within the accumulator to accelerate the piston toward the moil, wherein the piston has a striking end for striking the moil and an opposing rear end; and a piston cap that encloses the rear end of the piston, wherein during firing, the piston and the piston cap initially accelerate together and prior to the piston reaching its striking position the piston cap separates from the piston, whereby the piston cap isolates the piston from the accumulator.

Hammer drill

In a hammer drill, a coil spring is disposed rearward of a piston cylinder inside a housing so as to press the piston cylinder to an advanced position when the hammer drill operates in a drill mode, and a supporting plate is disposed at a rear end of the piston cylinder. The supporting plate includes a pair of side plates and a base portion connecting front ends of the side plates. The base portion is in contact with a rear surface of the piston cylinder, and rear ends of the side plates are in contact with a front end of the coil spring. Openings provided in the side plates are configured to hold a pin on which a connecting arm is pivoted.

Hydraulic roto-percussion drill equipped with a stop piston

Le perforateur hydraulique roto-percutant comprend un corps ; un emmanchement (15) ; un piston de frappe (5) configuré pour frapper l’emmanchement (15) ; un piston de butée (13) configuré pour positionner l’emmanchement (15) dans une position d’équilibre prédéterminée, le corps et le piston de butée (13) délimitant une première chambre de commande (22) reliée de façon permanente à un 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. Le perforateur hydraulique roto-percutant (2) comprend un canal de communication fluidique (26) débouchant dans la deuxième chambre de commande (25), configuré pour alimenter la deuxième chambre de commande (25) en fluide à haute pression et pourvu d’un orifice calibré (27). Figure 2 The hydraulic rotary hammer drill includes a body; a fitting (15); a striking piston (5) configured to strike the socket (15); a stop piston (13) configured to position the fitting (15) in a predetermined equilibrium position, the body and the stop piston (13) delimiting a first control chamber (22) permanently connected to a conduit high pressure fluid supply (9) and configured to urge the stopper piston (13) forward, and a second control chamber (25) configured to urge the stopper piston (13) forward . The rotary-percussive hydraulic drill (2) comprises a fluid communication channel (26) opening into the second control chamber (25), configured to supply the second control chamber (25) with high-pressure fluid and provided with a calibrated orifice (27). Figure 2

Device for variable setting of the impact energy of an electro-pneumatic percussion mechanism in a drilling and/or chipping hammer in which it is comprised.

The drill includes an electromagnetic striking mechanism (15) with a flying piston (4) and an excitation piston (3), through which passes a controllable valve (29) to alter the pressure in the drive pressure cushion (20). This valve may be a slide valve.

A hammer member and a drilling machine comprising a hammer member

Un miembro percutor cilíndrico circular (2) para una máquina de perforación, adaptado para transferir energía cinética a un miembro de recepción de impulso (4) por ondas de choque creadas durante el contacto entre el miembro percutor y el miembro de recepción de impulso, teniendo el miembro percutor un diámetro dmáx e incluyendo una superficie lateral (12) y una superficie de impulso (6), caracterizado porque la superficie de impulso (6), tiene una forma convexa en forma de anillo en la dirección de impacto y comprende una superficie activa (14) en forma de anillo, y porque el miembro percutor (2) está adaptado para transferir la energía cinética al miembro de recepción de impulso (4) por medio de la superficie activa (14) en forma de anillo de la superficie de impulso (6), en el que la superficie activa (14) en forma de anillo es concéntrica con respecto a la sección transversal del miembro percutor (2), en el que la superficie activa (14) tiene un diámetro da, en la que el diámetro da es el diámetro de un círculo situado concéntricamente en la superficie activa (14) y en el que da<0,75<máx. A circular cylindrical firing member (2) for a drilling machine, adapted to transfer kinetic energy to an impulse receiving member (4) by shock waves created during contact between the firing member and the impulse receiving member, having the firing member a diameter dmax and including a lateral surface (12) and an impulse surface (6), characterized in that the impulse surface (6), has a convex ring-shaped shape in the direction of impact and comprises a surface active (14) in the form of a ring, and because the firing member (2) is adapted to transfer the kinetic energy to the impulse receiving member (4) by means of the active surface (14) in the form of a ring of the surface of pulse (6), in which the ring-shaped active surface (14) is concentric with respect to the cross section of the firing member (2), in which the active surface (14) has a diameter d, in the that ...

Impact tool

本实用新型提供一种冲击工具。锤钻(1)包括马达(6)、工具保持件(17)和撞锤(24)，其中，所述工具保持件(17)能够在前端安装钻头(B)；所述撞锤(24)被设置在工具保持件(17)内，用于在马达(6)的驱动下进行往复运动，锤钻(1)能够随着撞锤(24)的往复运动对钻头(B)进行冲击，撞锤(24)具有后侧的大径部(30)和前侧的小径部(31)，在大径部(30)上形成有在其外周面开口的2个孔(34、34)。据此，能够确保往复运动的引导功能且实现有效的轻量化。

Spring hammer for rapping a surface

A spring hammer (10) for rapping a surface, the spring hammer comprising an anvil with an impact surface, which anvil can fastened to the surface to be rapped, a movable piston having a first end which is in operation moved towards the impact surface of the anvil, a guiding structure for guiding the piston to move in a defined direction with respect the anvil, and means for launching the piston to move the piston towards the impact surface of the anvil, wherein the piston is a solid block in which the first end of the piston is machined to an integrated flexible spring geometry.

Percussion element

A percussion element (1) for applying blows on a tool has a body (3) with several parallel bores (4). A heavy mass moulded piston (2) runs in a pressure-tight manner in each of these bores (4) and strikes against stops (5) that may be arranged inside or outside the moulded piston (2). An end chamber (9) is arranged at each face of the moulded pistons (2). The moulded pistons (2) control the operation of the percussion element (1). At least one of the moulded pistons (2) applies blows on the tool. The percussion element may apply working blows in the direction of the tool and in a special embodiment it may also apply loosening blows in the opposite direction. In a special embodiment, the energy of the loosening blows may be regulated in its intensity or suppressed. The percussion element is preferably used in surgery, but also for the construction of apparatus in general.