CN101927478A - Hydraulic impact equipment - Google Patents

Hydraulic impact equipment Download PDF

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Publication number
CN101927478A
CN101927478A CN2009101480325A CN200910148032A CN101927478A CN 101927478 A CN101927478 A CN 101927478A CN 2009101480325 A CN2009101480325 A CN 2009101480325A CN 200910148032 A CN200910148032 A CN 200910148032A CN 101927478 A CN101927478 A CN 101927478A
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CN
China
Prior art keywords
distributor
chamber
communicated
piston
hydraulic test
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Granted
Application number
CN2009101480325A
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Chinese (zh)
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CN101927478B (en
Inventor
奥利维埃·拉福勒斯
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Individual
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Individual
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Priority to CN200910148032.5A priority Critical patent/CN101927478B/en
Priority to KR1020100059720A priority patent/KR20100138830A/en
Publication of CN101927478A publication Critical patent/CN101927478A/en
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Publication of CN101927478B publication Critical patent/CN101927478B/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The invention relates to hydraulic impact equipment, comprising a body (3). The body comprises a cylinder (2), wherein an impact piston (1) is slidably arranged in the cylinder, and is driven by hydraulic pressure through incompressible fluid in a reciprocating way; motion of the impact piston (1) is controlled by a distributor (6) which is accommodated in a distribution case (7); the distribution case is arranged in the body of the equipment; and the distribution case (7) and the distributor (6) at least partially are limited to a closed cavity (17) which is invariably connected to a high pressure supply pipeline (12) through at least one calibration hole (18).

Description

Hydraulic impact equipment
Technical field
The present invention relates to hydraulic impact equipment.
Background technology
Impact device comprises body, and this body comprises cylinder, and impact piston is installed in cylinder slidably, and this impact piston passes through incompressible fluid in complex way by hydraulic-driven.Piston move through distributor control, this distributor opens and closes the fluid pressure line that the particular cavity that is used for being positioned on the piston either side is communicated with pressure duct and low pressure line continuously, to produce this orderly reciprocating motion.
By known methods, the motion of distributor self is on the one hand by one or more passages that lead to the cylinder of piston, by one or more passages that are connected to low pressure line, controls on the other hand.Therefore, the control of distributor motion depends on piston position in its cylinder.
Distributor is a mechanical part, and it is more light than impacting piston, and the run duration of distributor on the operation stroke is than impacting the shorter of piston.This makes that switching the connection that acts on the pipeline on the impact piston very apace becomes possibility, for example when piston during near the top dead centre of its stroke, make its chamber of carrying out impact stroke (and being referred to as top chamber) switch to high pressure from low pressure apace on the piston with acting on, perhaps on the contrary, when piston impact instrument and necessary then its upward stroke of beginning, make this identical chamber switch to low pressure from high pressure apace.The cross section in the chamber that the speed dependent that distributor obtains works in its weight, to its motion, be present in the pressure of control dispenser motion in the passage and usually as the viscosity of the oil of incompressible fluid in its stroke.
This causes many shortcomings.
Therefore, especially, when piston when its impact stroke begins, in advance top chamber is switched to low pressure and can produce sizable cavitation, make internal part wearing and tearing, and in the whole hydraulic means that supports machine, produce knocking.Further, when piston when its top dead centre, the speed that distributor is too low will cause the piston motion to be switched delaying, piston can exceed its normal stroke and impact the stopper section that supports in body then.
Therefore, movement velocity that can control dispenser so that accurately regulating action make its chamber of carrying out impact stroke place the moment that is communicated with low pressure line and pressure duct respectively in piston, be important for the reliability and the service life of equipment.
Summary of the invention
The object of the present invention is to provide hydraulic impact equipment, wherein the movement velocity of distributor can be controlled in simple mode.
Therefore, the present invention relates to a kind of hydraulic impact equipment, it comprises body, this body comprises cylinder, impact piston is installed in the cylinder slidably, and in complex way by hydraulic-driven, control by the distributor that is contained in the distributor box that moves through of impact piston by incompressible fluid for this impact piston, this distributor box is installed in the body of this equipment, it is characterized in that: described distributor box and distributor limit the closed cavity that is connected to the high-pressure feed road via at least one calibration hole consistently at least in part.
By regulating the size of calibration hole, being fed to the flow velocity of oil of closed cavity and then the movement velocity of distributor can control in simple mode, thereby after impact piston just in time arrives its impact zone to instrument, distributor will act on impact piston so that its chamber of carrying out impact stroke places with low pressure return line is communicated with, and in the moment when piston has arrived its top dead centre, distributor will act on impact piston so that its chamber of carrying out impact stroke places with the high-pressure feed road is communicated with.
Therefore, when acting on impact piston so that its chamber of carrying out impact stroke places the moment that is communicated with low pressure return line and high-pressure feed road accurately to regulate separately.
Cavitation is avoided, and this is because in the impact stroke of piston, acts on impact piston so that its chamber of carrying out impact stroke obtains supply in whole piston motion.
Impact piston exceeds the risk of its normal upward stroke also to be avoided, and this has prevented the damage of the body of impact piston and equipment.
It should be noted that calibration hole and closed cavity be arranged so that distributor its up and down the movement velocity in the stroke descend.
Preferably, closed cavity is connected to the high-pressure feed road consistently via at least one calibration hole, and described calibration hole is arranged in the wall that limits this closed cavity.
Preferably, this hydraulic test comprises the distribution lid that leans against on described distributor box one end, and described closed cavity limits by this distributor box, distributor and distribution lid.
Advantageously, described distributor has tube, and by the diapire closure, this diapire is with distributor box and distribute lid to limit this closed cavity towards the end of distributing lid for this tube.
Preferably, the tube of described distributor and diapire limit center cavity, and this center cavity is communicated to described high-pressure feed road consistently.
Advantageously, the diapire of described distributor has at least one calibration hole, and is preferably axial, is communicated to described closed cavity on the one hand, is communicated to described center cavity on the other hand.
According to feature of the present invention, described distribution lid has access portal, and described distributor has extension, preferably axial, be provided for extending through this access portal and outstanding from access portal, described distribution lid and extension limit the chamber that is communicated to low pressure return line consistently from the outstanding part of this access portal to small part.
According to another feature of the present invention, this equipment comprises that at least one is communicated to the passage on high-pressure feed road consistently with described closed cavity, and this passage is provided with at least one calibration hole.
Preferably, described distributor box has at least one calibration hole, and described calibration hole is communicated in the described closed cavity on the one hand, is communicated to the passage that is connected to the high-pressure feed road on the other hand.
Advantageously, described distributor box and distributor are defined for the chamber of the motion of the described distributor of control, and this control chamber is connected in alternating fashion to high-pressure feed road and low pressure return line.
Preferably, described piston and cylinder limit at least one top chamber, and under the effect of described distributor, this top chamber is connected in alternating fashion to high-pressure feed road and low pressure return line, and bottom chamber is connected to the high-pressure feed road consistently.
Another feature according to the present invention, described body and piston limit rear chamber, and this rear chamber is relative with described bottom chamber and be full of gas-pressurized.
Description of drawings
In a word, the present invention will be better understood by the explanation with reference to attached schematic diagram, and this explanation has provided an embodiment as the nonrestrictive example of this equipment.
Fig. 1 to 4 is the longitdinal cross-section diagrams that are in this hydraulic test of different use locations.
Fig. 5 is the sectional view according to the distributor of the different embodiment of the hydraulic test of Fig. 1.
The specific embodiment
Hydraulic impact equipment shown in Figure 1 comprises the impact piston 1 that is slidably mounted in complex way in the cylinder 2, and this cylinder 2 is arranged in the body 3 of equipment.In its reciprocating motion process, piston 1 is designed for the top that impact is installed on the instrument O in the hole 4 slidably, and hole 4 is arranged in the body 3 coaxially with cylinder 2.The body 3 of equipment is by being installed in rear head 5 closures on the cylinder 2.
This hydraulic impact equipment also comprises the distributor 6 that is slidably mounted in the distributor box 7, and this distributor box is installed in the body 3 of equipment.The supply of the incompressible fluid of 6 pairs of equipment of this distributor is worked, to cause the reciprocating motion of impact piston 1.This distributor 6 has tube 6a, and tube passes through diapire 6b closure towards the end of rear head 5.This distributor 6 also has the 6c of the portion that extends axially that extends from diapire 6b.
This hydraulic impact equipment also comprises the distribution lid 8 that axially leans against on distributor box 7 tops.This distribution lid 8 has access portal 9, and the 6c of the portion that extends axially of distributor 6 is designed to extend through access portal 9 and is outstanding from this access portal 9.
Piston 1 and cylinder 2 and rear head 5 limit at least three chambeies:
Actuator chamber 10, it is positioned at piston 1 top, and extends in the rear head 5, and this actuator chamber 10 is gas-pressurized abrim;
Relative annular chamber 11, its cross-sectional surface is long-pending less, and always is communicated with high-pressure feed road 12; With
Annular actuator chamber 13, it is communicated with distributor box 7 via passage 14, thereby when distributor 6 change positions, this passage 14 and then be that this actuator chamber 13 alternately is communicated with high-pressure feed road 12 or low pressure return line 15.
The reciprocating motion of piston 1 is alternately to be communicated with high-pressure feed road 12 and low pressure return line 15 so that to be applied to the adjoining land of making a concerted effort on the piston 1 by actuator chamber 13 to be provided on one and another direction and to realize.
Among the embodiment that illustrates in the drawings, distributor 6 covers 8 with distributor box 7 and distribution and defines four actuator chambers:
Back cavity 16, it is communicated with low pressure return line 15 consistently via channel C 1;
Closed annular chamber 17, it is communicated with high-pressure feed road 12 all the time via one or more calibration holes 18, described calibration hole 18 is arranged in the distributor box 7, and is communicated to this closed chamber 17 on the one hand, is communicated to the channel C 2 that is connected with high-pressure feed road 12 on the other hand;
Center cavity 19, it is communicated with high-pressure feed road 12 consistently via passage 20; With
The chamber 21 that is used for the motion of control dispenser 6, this control chamber 21 is annular, and facing to chamber 17.
Distributor 6 and distributor box 7 also limit the annular chamber 22 with low pressure return line 15 constant communication.
This hydraulic impact equipment also comprises hydraulic control device, and hydraulic control device is provided for the triggering of the motion of control dispenser 6.These control device comprise at least one cannelure that is arranged on control piston 1 in the cylinder 2 23 and are communicated to cannelure 23 respectively and the passage 24 of control chamber 21.
Piston 1 is included in the cannelure 25 of its central part and reduces district 26 at its cross section towards the place, end of instrument O.
Position according to piston 1, on the one hand can set up being communicated with of control chamber 21 and low pressure return line 15 via passage 24, cannelure 23, cannelure 25 and passage 27, on the other hand via passage 24, cannelure 23, by cross section reduce distinguish 26 and the annular chamber that limits of body 3 and annular chamber 11 set up being communicated with of control chamber 21 and high-pressure feed road 12.
Alternately be communicated with by control chamber 21 with high-pressure feed road 12 and low pressure return line 15, thereby make and depend on the surface area that selection is used for the cross section of four actuator chambers 16,17,19,21, adjoining land the providing on a direction and other direction of making a concerted effort on the distributor is provided, thereby realizes the reciprocating motion of distributor 6.
In the following description, by the example acceptable be, when control chamber 21 was communicated with low pressure return line 15, distributor 6 moved downward, and when control chamber 21 was communicated with high-pressure feed road 12, distributor 6 moved upward.
Original state as shown in Figure 1, wherein, distributor 6 and piston 1 are positioned at bottom position.When pressure fluid flows in high-pressure feed road 12, be applied to and with joint efforts the latter remained on bottom position on the distributor 6, control chamber 21 via the groove 25 of passage 24, cannelure 23, piston 1 and be connected to consistently equipment low pressure return line 15 passage 27 and be connected to low pressure return line.Be applied to and cause that piston 1 rises making a concerted effort on the impact piston 1, this is because actuator chamber 13 is connected to low pressure return line 15 via the cannelure 28 and the passage 14 of distributor 6.
In impact piston ascending motion process, following operation takes place:
When impact piston 1 ascending motion finished, as shown in Figure 2, the ridge 29 of piston 1 is the cannelure 23 of Coverage Control device not, thereby set up from high-pressure feed road 12 to control channel 24 and the connection of control chamber 21.
Then, the control chamber 21 of distributor 6 is in high pressure conditions, causes that distributor rises making a concerted effort on the distributor thereby be applied to.
The oil that is contained in the chamber 17 is discharged by calibration hole 18 in this ascending motion process of distributor 6.
The ridge 30 of distributor 6 does not cover the ridge 31 of distributor box 7, and sets up connection via passage 20 and center cavity 19 between high-pressure feed road 12, passage 14 and actuator chamber 13.
Because distributor 6 stops its upward stroke, is applied to and makes piston 1 downward its impact stroke of acceleration making a concerted effort on the piston 1, as shown in Figure 3.
In the impact stroke process of piston 1, control chamber 21, control channel 24 and cannelure 23 are isolated with high pressure, and the groove 25 via impact piston 1 is communicated with low pressure return line 15 then.Then, be applied to making a concerted effort downwards on the distributor, distributor begins its downward motion, as shown in Figure 4.Move downward in the process at this of distributor, chamber 17 is oil-filled by calibration hole 18.The selection of the size of this or these calibration hole makes its speed that can regulate and distribute device 6, thereby makes that the ridge 30 of distributor 6 is overlapping with the ridge 31 of distributor box 7 after impact piston 1 arrives its impact zone.Because in the accelerating travel process, in the whole motion of piston 1, the actuator chamber 13 of impact piston is supplied, thereby can avoid cavitation.
Distributor 6 is set up connection between low pressure return line 15 and actuator chamber 13.Then, impact piston 1 and distributor 6 are in bottom position, and as shown in Figure 1, the work period can restart.
Fig. 5 represents the embodiment of the change of this hydraulic test, and wherein calibration hole 18 is not arranged on the distributor box 7, but is set directly on the distributor 6, thereby makes calibration hole 18 axially be communicated to center cavity 19.
Self-evident, the present invention not only is subject to the embodiment of above-mentioned hydraulic test as an example, and on the contrary, it covers the embodiment of all distortion.

Claims (12)

1. hydraulic impact equipment, it comprises body (3), this body comprises cylinder (2), impact piston (1) is installed in this cylinder slidably, this impact piston passes through incompressible fluid in complex way by hydraulic-driven, the distributor (6) that is contained in the distributor box (7) that moves through of this impact piston (1) is controlled, this distributor box is installed in the body of this equipment, it is characterized in that: described distributor box (7) and distributor (6) limit the closed cavity (17) that is connected to high-pressure feed road (12) via at least one calibration hole (18) consistently at least in part.
2. hydraulic test according to claim 1 is characterized in that: described closed cavity (17) is connected to high-pressure feed road (12) consistently via at least one calibration hole (18), and described calibration hole is arranged in the wall that limits this closed cavity (17).
3. hydraulic test according to claim 1 and 2, it is characterized in that: it comprises the distribution lid (8) that leans against on described distributor box (7) one ends, and its feature is that also described closed cavity (17) limits by this distributor box (7), distributor (6) and distribution lid (8).
4. hydraulic test according to claim 3, it is characterized in that: described distributor (6) has tube (6a), by diapire (6b) closure, this diapire (6b) is with distributor box (7) and distribute lid (8) to limit this closed cavity (17) towards the end of distributing lid (8) for this tube (6a).
5. hydraulic test according to claim 4 is characterized in that: the tube (6a) of described distributor (6) and diapire (6b) limit center cavity (19), and this center cavity (19) is communicated to described high-pressure feed road (12) consistently.
6. hydraulic test according to claim 5, it is characterized in that: the diapire (6b) of described distributor (6) has at least one calibration hole (18), described calibration hole is preferably axial, is communicated to described closed cavity (17) on the one hand, is communicated to described center cavity (19) on the other hand.
7. according to each described hydraulic test among the claim 3-6, it is characterized in that: described distribution lid (8) has access portal (9), and be: described distributor (6) has extension (6c), this extension is preferably axial, be provided for extending through this access portal and outstanding from the latter, described distribution lid (8) and extension (6c) limit the chamber (16) that is communicated to low pressure return line (15) consistently from the outstanding part of this access portal to small part.
8. according to each described hydraulic test among the claim 1-7, it is characterized in that: it comprises that at least one is communicated to the passage (C2) of high-pressure feed road (12) consistently with described closed cavity (17), and wherein is provided with at least one calibration hole (18).
9. hydraulic test according to claim 8, it is characterized in that: described distributor box (7) has at least one calibration hole (18), described calibration hole (18) is communicated in the described closed cavity (17) on the one hand, is communicated to the passage (C2) that is connected to high-pressure feed road (12) on the other hand.
10. according to each described hydraulic test among the claim 1-9, it is characterized in that: described distributor box (7) and distributor (6) are defined for the chamber (21) of the motion of the described distributor of control (6), and this control chamber (21) is connected in alternating fashion to high-pressure feed road and low pressure return line.
11. according to each described hydraulic test among the claim 1-10, it is characterized in that: described piston (1) limits at least one top chamber (13) with cylinder (2), under the effect of described distributor (6), this top chamber (13) is connected in alternating fashion to high-pressure feed road (12) and low pressure return line (15), and bottom chamber (11) is connected to high-pressure feed road (12) consistently.
12. hydraulic test according to claim 11 is characterized in that: described body (3) and piston (1) limit rear chamber (10), and this rear chamber (10) is relative with described bottom chamber (11) and be full of gas-pressurized.
CN200910148032.5A 2009-06-23 2009-06-23 Hydraulic impact equipment Expired - Fee Related CN101927478B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200910148032.5A CN101927478B (en) 2009-06-23 2009-06-23 Hydraulic impact equipment
KR1020100059720A KR20100138830A (en) 2009-06-23 2010-06-23 Hydraulic percussive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910148032.5A CN101927478B (en) 2009-06-23 2009-06-23 Hydraulic impact equipment

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CN101927478A true CN101927478A (en) 2010-12-29
CN101927478B CN101927478B (en) 2015-03-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105829631A (en) * 2013-12-18 2016-08-03 日本气动工业株式会社 Impact-Driven Tool
CN111712353A (en) * 2018-02-14 2020-09-25 蒙塔博特公司 Rotary impact hydraulic perforator provided with a control chamber permanently connected to a low pressure accumulator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101492238B1 (en) * 2013-09-10 2015-02-16 동양중공업(주) Control valve for hidraulic breaker
CN109797745B (en) * 2019-01-11 2020-09-04 中信重工机械股份有限公司 Spacing protection device of hydraulic pile hammer
CN110067277B (en) * 2019-05-27 2024-01-23 马鞍山卡迈特液压机械股份有限公司 Middle cylinder part of hydraulic breaking hammer
CN112726707B (en) * 2020-12-30 2022-04-26 江苏力博士机械股份有限公司 Hydraulic breaking hammer piston ring improvement process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784228A (en) * 1986-09-09 1988-11-15 Teisaku Co., Ltd. Impact device
DE4424078A1 (en) * 1994-07-08 1996-01-11 Klemm Bohrtech Hydraulic hammer to which boring rod for ground drilling operations can be attached
US5669281A (en) * 1994-12-08 1997-09-23 Etablissements Montabert Method and machine for altering the striking stroke of a percussive machine moved by a pressurized incompressible fluid
WO1999054094A1 (en) * 1998-04-21 1999-10-28 Atlas Copco Rock Drills Ab Hammer device
CN1441716A (en) * 2000-07-13 2003-09-10 蒙塔博特股份有限公司 Hydraulic percussion apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784228A (en) * 1986-09-09 1988-11-15 Teisaku Co., Ltd. Impact device
DE4424078A1 (en) * 1994-07-08 1996-01-11 Klemm Bohrtech Hydraulic hammer to which boring rod for ground drilling operations can be attached
US5669281A (en) * 1994-12-08 1997-09-23 Etablissements Montabert Method and machine for altering the striking stroke of a percussive machine moved by a pressurized incompressible fluid
WO1999054094A1 (en) * 1998-04-21 1999-10-28 Atlas Copco Rock Drills Ab Hammer device
CN1441716A (en) * 2000-07-13 2003-09-10 蒙塔博特股份有限公司 Hydraulic percussion apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105829631A (en) * 2013-12-18 2016-08-03 日本气动工业株式会社 Impact-Driven Tool
CN105829631B (en) * 2013-12-18 2018-05-01 日本气动工业株式会社 Percussion tool
US10343272B2 (en) 2013-12-18 2019-07-09 Nippon Pneumatic Mfg. Co., Ltd. Impact-driven tool
CN111712353A (en) * 2018-02-14 2020-09-25 蒙塔博特公司 Rotary impact hydraulic perforator provided with a control chamber permanently connected to a low pressure accumulator
CN111712353B (en) * 2018-02-14 2023-03-21 蒙塔博特公司 Rotary impact hydraulic perforator provided with a control chamber permanently connected to a low pressure accumulator

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