CN215211236U - Hydraulic breaking hammer with buffering connection structure - Google Patents

Abstract

The utility model discloses a hydraulic breaking hammer with buffering connection structure, including wear-resisting cover, box and fixed plate, the box is installed to the inner wall of wear-resisting cover, the protecgulum is installed in the front of box, the mounting panel is installed in the front of protecgulum, the lifter is installed in the front of mounting panel, and the one end of lifter extends into the inside of mounting panel, the fixed plate is installed to the other end of lifter. The utility model discloses an install components such as fixed plate, lifter, spring, shell fragment, the lantern ring and fixed guide bar and realize being fixed by what broken object to needs, it is more convenient to make operating personnel operate the quartering hammer, in whole crushing process, no longer needs the drill rod direction, has avoided harm and the fixed direction convenient and fast more to the drill rod to increased the life of drill rod, also increased the practicality of device.

Description

Hydraulic breaking hammer with buffering connection structure

Technical Field

The utility model relates to the technical field of mechanical equipment, specifically be a hydraulic breaking hammer with buffering connection structure.

Background

The hydraulic breaking hammer is a machine tool capable of converting hydraulic energy into mechanical energy so as to do work externally, is mainly used for breaking, dismantling, excavating hard layers and the like, is usually installed on an excavator, a loader or a power station, is mainly used for connecting a shell of the excavator, the loader or the power station at present, is mainly used for breaking operation, and is convenient for workers to construct.

The existing hydraulic breaking hammer has the defects that:

1. most of the existing hydraulic breaking hammer devices are used for directly erecting a drill rod on a broken object when breaking operation is carried out, and then breaking is directly started when breaking is needed, and the operation process can cause the drill rod to deviate when breaking the object to cause damage to the drill rod, so that the service life of the drill rod is shortened;

2. current hydraulic breaking hammer is dismantling the in-process mostly and lets the box freely drop after dismantling, and the in-process produces vibrations so that cause the harm to box internals easily, reduces internals's life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic breaking hammer with buffering connection structure to solve the problem that the drill rod that proposes damages and internals breaks among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hydraulic breaking hammer with buffering connection structure, includes wear-resisting cover, box and fixed plate, the box is installed to the inner wall of wear-resisting cover, the protecgulum is installed in the front of box, the mounting panel is installed in the front of protecgulum, the lifter is installed in the front of mounting panel, and the one end of lifter extends into the inside of mounting panel, the fixed plate is installed to the other end of lifter.

Preferably, the bolt is installed to the inner wall of wear-resisting cover, and the both ends of bolt all extend the outer wall of wear-resisting cover, and fixing bolt is installed to the inner wall of wear-resisting cover, and fixing bolt's both ends all extend the outer wall of wear-resisting cover, and fixing bolt is located one side of bolt, and the pump mouth is installed to the outer wall of wear-resisting cover.

Preferably, the hanger plate is installed at the top of box, the roof is installed at the top of box, and the roof is located one side of hanger plate, and the back mounted of box has the top cap, and the back lid is installed to the inner wall of box, and the surge tank is installed to the outer wall of box.

Preferably, the outer wall of the lifting rod is provided with a fixed rod, one end of the fixed rod is provided with a lantern ring, the front surface of the fixed plate is provided with a first spring, the front surface of the first spring is provided with an elastic sheet, the front surface of the elastic sheet is provided with a fixed guide rod, and the fixed guide rod is positioned in the lantern ring.

Preferably, the inner wall of the rear cover is provided with a first piston, one end of the first piston extends out of the outer wall of the rear cover, the outer wall of the first piston is provided with a piston ring, the inner wall of the box body is provided with a hydraulic cylinder, the inner wall of the box body is provided with a valve box, the valve box is positioned on one side of the hydraulic cylinder, the inner wall of the valve box is provided with a valve core, one end of the hydraulic cylinder is provided with a precursor, one end of the precursor is provided with a drill rod, one end of the drill rod extends into the precursor, the outer wall of the drill rod is provided with a bushing, the outer wall of the drill rod is provided with a guide sleeve, and the guide sleeve is positioned on one side of the bushing.

Preferably, the inner wall of the damper box is provided with a second spring, the inner wall of the damper box is provided with a piston cylinder, the piston cylinder is positioned on one side of the second spring, the bottom of the piston cylinder is provided with a sealing sleeve, one end of the sealing sleeve extends into the piston cylinder, the piston cylinder is internally provided with a second piston, one end of the second piston extends into the sealing sleeve, the outer wall of the second piston is provided with an extension valve, the extension valve is positioned on one side of the second piston, the outer wall of the second piston is provided with a flow valve, the flow valve is positioned on the other side of the second piston, the inner wall of the sealing sleeve is provided with a baffle, the top of the baffle is provided with a compression valve, the top of the baffle is provided with a compensation valve, and the compensation valve is positioned on one side of the compression valve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model realizes the fixation of the object to be crushed by installing the components such as the fixed plate, the lifting rod, the spring, the shrapnel, the lantern ring and the fixed guide rod, fix and guide the drill rod in the operation process, which makes the operation of the breaking hammer more convenient for the operator, when the hydraulic breaking hammer starts to work, the lifting rod is started to lift the fixed guide rod to the object to be crushed, the lifting rod is continuously started to make the bottom of the fixed guide rod and the object to be crushed fit together, at the moment, the shrapnel is extruded to compress the first spring backwards, the first spring is arranged on the front of the fixed plate, which ensures that the fixed guide rod can be stably fit to the object to be crushed, a good guiding function is provided for the drill rod, the crushing work becomes easier, after the crushing is finished, because the elasticity of the first spring is potential energy function, the fixed guide rod returns to the same horizontal plane, the lifting rod is started, and the fixed guide rod is retracted to a fixed position, so that the whole crushing process is finished, the drill rod is not required to be guided in the whole crushing process, the drill rod is prevented from being damaged, the fixed guide is more convenient and faster, and the service life of the drill rod is prolonged;

2. the utility model effectively protects the safety of the internal structure, prolongs the service life of the internal structure, when the crushing is finished, the crushing hammer needs to be disassembled by machinery, the box body can directly fall on the ground after the crushing, at the moment, the damping box starts to act, the second spring in the damping box compresses downwards, absorbs gravitational potential energy and converts the gravitational potential energy into elastic potential energy, the second piston in the piston cylinder starts to move downwards under the action of pressure in the sealing sleeve, the second piston moves downwards, the circulating valve is opened, the oil liquid at the lower part of the sealing sleeve flows to the upper part of the sealing sleeve through the circulating valve, when the pressure reaches a certain degree, the compression valve is opened, the oil liquid at the lower part of the sealing sleeve flows to the external storage space of the sealing sleeve through the compression valve, the oil liquid moves upwards to generate resistance to slow down the downward movement of the second piston, and the gravitational potential energy is restrained to a certain degree, when the second spring completely converts gravitational potential energy into elastic potential energy and then needs to move upwards, the second piston moves upwards at the moment, the expansion valve is opened, oil on the upper portion of the sealing sleeve flows to the lower portion of the sealing sleeve through the expansion valve under the action of pressure, when the pressure reaches a certain degree, the compensation valve is opened, the oil in the external storage space of the sealing sleeve flows back to the lower portion of the sealing sleeve, the second piston is subjected to upward resistance at the moment, the elastic potential energy of the second spring is reduced, the box body can stably drop on the ground, therefore, internal parts are protected more effectively, unnecessary damage is reduced, and the service life of the internal parts of the box body is prolonged.

Drawings

Fig. 1 is a schematic view of the appearance structure of the present invention;

FIG. 2 is a schematic structural view of the case of the present invention;

FIG. 3 is a schematic side view of the drill rod of the present invention;

fig. 4 is a schematic structural view of the shock-absorbing box of the present invention.

In the figure: 1. a wear-resistant sleeve; 101. a bolt; 102. fixing the bolt; 103. a pump port; 2. a box body; 201. a hanger plate; 202. a top plate; 203. a top cover; 204. a front cover; 3. a fixing plate; 301. mounting a plate; 302. a lifting rod; 303. a first spring; 304. fixing the rod; 305. a spring plate; 306. a collar; 307. fixing the guide rod; 4. a drill rod; 401. a rear cover; 402. a first piston; 403. a piston ring; 404. a hydraulic cylinder; 405. a valve core; 406. a valve box; 407. a precursor; 408. a bushing; 409. a guide sleeve; 5. a damper box; 501. a second spring; 502. a piston cylinder; 503. a sealing sleeve; 504. a second piston; 505. a valve is extended; 506. a flow-through valve; 507. a baffle plate; 508. a compression valve; 509. a compensation valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a hydraulic breaking hammer with a buffering connection structure comprises a wear-resistant sleeve 1, a box body 2 and a fixing plate 3, wherein the box body 2 is installed on the inner wall of the wear-resistant sleeve 1, the wear-resistant sleeve 1 has connection and protection effects, the box body 2 is integrally connected with machinery through the wear-resistant sleeve 1, the box body 2 is installed on the inner wall of the wear-resistant sleeve 1 and is prevented from directly contacting with the outside, certain protection effects are achieved, a front cover 204 is installed on the front face of the box body 2, the box body 2 has installation effects and provides a closed space and an installation space for internal parts, meanwhile, the direct contact between the internal parts and the outside is isolated, the possibility that the internal parts are damaged is reduced, the box body 2 has certain protection effects, a mounting plate 301 is installed on the front face of the front cover 204, the front cover 204 has installation effects and mainly provides the installation space for the mounting plate 301, and a lifting rod 302 is installed on the front face of the mounting plate 301, and the one end of lifter 302 extends into the inside of mounting panel 301, and mounting panel 301 has the supporting role, mainly for supporting lifter 302, makes lifter 302 be in stable operational environment, and fixed plate 3 is installed to the other end of lifter 302, and lifter 302 has the lift effect, mainly is responsible for driving fixed plate 3 and goes up and down, and fixed plate 3 has the installation effect, provides installation space for first spring 303.

Further, bolt 101 is installed to wear-resisting cover 1's inner wall, and the outer wall of wear-resisting cover 1 is all extended at the both ends of bolt 101, fixing bolt 102 is installed to wear-resisting cover 1's inner wall, and fixing bolt 102's both ends all extend wear-resisting cover 1's outer wall, fixing bolt 102 is located one side of bolt 101, pump mouth 103 is installed to wear-resisting cover 1's outer wall, bolt 101 plays the supporting role, when box 2 needs to connect machinery, wear-resisting cover 1 of 2 outer wall installations of box, then pull out bolt 101, not hard up nut, take off fixing bolt 102, stretch into in the middle of wear-resisting cover 1's the splint with machinery, insert bolt 101 from the middle into, then go up fixing bolt 102, screw up the nut, thereby make box 2 be in the same place with mechanical connection, pump mouth 103 has the effect of being responsible for connecting the pump body.

Further, hanger plate 201 is installed at the top of box 2, roof 202 is installed at the top of box 2, and roof 202 is located one side of hanger plate 201, the back mounted of box 2 has top cap 203, back lid 401 is installed to the inner wall of box 2, surge tank 5 is installed to the outer wall of box 2, hanger plate 201 has the installation effect, mainly for the installation quartering hammer provides the impetus, roof 202 plays the observation maintenance effect, when the quartering hammer breaks down, dismantle roof 202, observe and maintain the internals, top cap 203 is responsible for sealing box 2, make the internals of box 2 be in sealed environment, back lid 401 has the installation effect, provide the mounted position for first piston 402, surge tank 5 mainly avoids the direct contact of its internals and the external world, reduce the possibility of external damage, play corresponding guard action.

Furthermore, a fixed rod 304 is installed on the outer wall of the lifting rod 302, a collar 306 is installed at one end of the fixed rod 304, a first spring 303 is installed on the front surface of the fixed plate 3, an elastic sheet 305 is installed on the front surface of the first spring 303, a fixed guide rod 307 is installed on the front surface of the elastic sheet 305, the fixed guide rod 307 is located inside the collar 306, when the hydraulic breaking hammer starts to work, when the drill rod 4 is vertical to the ground, the lifting rod 302 is started to lift the fixed guide rod 307 onto an object to be broken, the lifting rod 302 is continuously started to enable the bottom of the fixed guide rod 307 to be attached to the object to be broken, the elastic sheet 305 is extruded to compress the first spring 303 backwards, the first spring 303 is located on the front surface of the fixed plate 3, the fixed guide rod 307 can be stably attached to the object to be broken, a good guiding effect is provided for the drill rod 4, the breaking work is easier, and after the breaking is finished, because the elasticity of the first spring 303 is potential energy, the fixed guide rod 307 returns to the same horizontal plane, the lifting rod 302 is started, and the fixed guide rod 307 is contracted to the fixed position, so that the whole crushing process is finished, the fixed rod 304 has a connecting and fixing function and is mainly responsible for connecting the lifting rod 302 and the lantern ring 306, and the lantern ring 306 has an installation effect and is responsible for installing the fixed guide rod 307, so that the fixed guide rod 307 is positioned on the same horizontal plane.

Further, a first piston 402 is installed on the inner wall of the rear cover 401, one end of the first piston 402 extends out of the outer wall of the rear cover 401, a piston ring 403 is installed on the outer wall of the first piston 402, a hydraulic cylinder 404 is installed on the inner wall of the box body 2, a valve box 406 is installed on the inner wall of the box body 2, the valve box 406 is located on one side of the hydraulic cylinder 404, a valve core 405 is installed on the inner wall of the valve box 406, a front body 407 is installed on one end of the hydraulic cylinder 404, a drill rod 4 is installed on one end of the front body 407, one end of the drill rod 4 extends into the front body 407, a bushing 408 is installed on the outer wall of the drill rod 4, a guide sleeve 409 is installed on the outer wall of the drill rod 4, the guide sleeve 409 is located on one side of the bushing 408, when the drill rod 4 needs to work, the inner parts start to work, the rear cover 401 is located in a nitrogen chamber, when the drill rod 4 impacts downwards, the valve core 405 inside the valve box 406 already opens a return circuit of the front chamber of the first piston 402 leading to the valve core 405, the oil liquid of the first piston 402 can be smoothly discharged, the first piston 402 extrudes the nitrogen in the nitrogen chamber backwards to generate heat insulation expansion force, finally the nitrogen moves forwards under the action of the heat insulation expansion force of the nitrogen to impact the drill rod 4, the drill rod 4 moves downwards to start the crushing process, when the first piston 402 impacts, the valve core 405 is at the upper limit position, when the first piston 402 moves backwards, the valve core 405 reverses to move to the lower limit position, the oil way is finally cut off to enable the return stroke movement of the first piston 402 to be finished, so that a new impact process is started, the bush 408 enables the drill rod 4 to be always at the original position, the return stroke distance is fixed, and the guide sleeve 409 has a guide function and fixes the direction for the downward movement of the drill rod 4.

Further, a second spring 501 is installed on the inner wall of the damping box 5, a piston cylinder 502 is installed on the inner wall of the damping box 5, the piston cylinder 502 is located on one side of the second spring 501, a sealing sleeve 503 is installed at the bottom of the piston cylinder 502, one end of the sealing sleeve 503 extends into the piston cylinder 502, a second piston 504 is installed inside the piston cylinder 502, one end of the second piston 504 extends into the sealing sleeve 503, an extension valve 505 is installed on the outer wall of the second piston 504, the extension valve 505 is located on one side of the second piston 504, a flow valve 506 is installed on the outer wall of the second piston 504, the flow valve 506 is located on the other side of the second piston 504, a baffle 507 is installed on the inner wall of the sealing sleeve 503, a compression valve 508 is installed on the top of the baffle 507, a compensation valve 509 is installed on the top of the baffle 507, the compensation valve 509 is located on one side of the compression valve 508, after crushing is finished, the crushing hammer needs to be disassembled mechanically, after the box body 2 is disassembled, the box body 2 may fall to the ground directly, at this time, the damper box 5 starts to act, the second spring 501 in the damper box 5 compresses downwards, absorbs gravitational potential energy and converts the gravitational potential energy into elastic potential energy, the second piston 504 in the piston cylinder 502 starts to move downwards under the action of pressure in the sealing sleeve 503, the second piston 504 moves downwards, the circulation valve 506 is opened, the oil liquid at the lower part of the sealing sleeve 503 flows to the upper part of the sealing sleeve 503 through the circulation valve 506 under the action of pressure, when the pressure reaches a certain degree, the compression valve 508 is opened, the oil liquid at the lower part of the sealing sleeve 503 flows to the storage space outside the sealing sleeve 503 through the compression valve 508, resistance is generated by the upward movement of the oil liquid to slow down the downward movement of the second piston 504, the gravitational potential energy is restrained to a certain degree, the upward movement is required after the gravitational potential energy is completely converted into elastic potential energy by the second spring 501, at this time, the second piston 504 moves upwards, the expansion valve 505 is opened, the oil on the upper part of the sealing sleeve 503 flows to the lower part of the sealing sleeve 503 through the expansion valve 505 under the action of pressure, when the pressure reaches a certain degree, the compensation valve 509 is opened, the oil in the storage space outside the sealing sleeve 503 flows back to the lower part of the sealing sleeve 503, at the moment, the second piston 504 is subjected to upward resistance, the elastic potential energy of the second spring 501 is reduced, and the box body 2 can stably fall on the ground.

The working principle is that firstly, a fixed guiding device is installed, a fixed rod 304 is installed on the outer wall of a lifting rod 302, a lantern ring 306 is installed at one end of the fixed rod 304, a first spring 303 is installed on the front surface of a fixed plate 3, an elastic sheet 305 is installed on the front surface of the first spring 303, a fixed guide rod 307 is installed on the front surface of the elastic sheet 305, the fixed guide rod 307 is located inside the lantern ring 306, when the hydraulic breaking hammer starts to work, when a drill rod 4 is vertical to the ground, the lifting rod 302 is started, the fixed guide rod 307 is lifted to an object to be broken, the lifting rod 302 is continuously started, the bottom of the fixed guide rod 307 is attached to the object to be broken, at the moment, the elastic sheet 305 is extruded to compress the first spring 303 backwards, the first spring 303 is located on the front surface of the fixed plate 3, the fixed guide rod 307 can be stably attached to the object to be broken, a good guiding effect is provided for the drill rod 4, and the breaking work becomes easier, after the crushing is finished, because the elasticity of the first spring 303 is a potential energy effect, the fixed guide rod 307 returns to the same horizontal plane, the lifting rod 302 is started, the fixed guide rod 307 is contracted to a fixed position, so that the whole crushing process is finished, then the shock absorption device is installed, the inner wall of the shock absorption box 5 is provided with the second spring 501, the inner wall of the shock absorption box 5 is provided with the piston cylinder 502, the piston cylinder 502 is positioned at one side of the second spring 501, the bottom of the piston cylinder 502 is provided with the sealing sleeve 503, one end of the sealing sleeve 503 extends into the piston cylinder 502, the piston cylinder 502 is internally provided with the second piston 504, one end of the second piston 504 extends into the sealing sleeve 503, the outer wall of the second piston 504 is provided with the expansion valve 505, the expansion valve 505 is positioned at one side of the second piston 504, the outer wall of the second piston 504 is provided with the flow valve 506, and the flow valve 506 is positioned at the other side of the second piston 504, the inner wall of the sealing sleeve 503 is provided with a baffle 507, the top of the baffle 507 is provided with a compression valve 508, the top of the baffle 507 is provided with a compensation valve 509, the compensation valve 509 is positioned at one side of the compression valve 508, when the crushing is finished, the machine needs to disassemble the crushing hammer, the box body 2 can directly fall on the ground after the disassembly, at the moment, the damping box 5 starts to act, the second spring 501 in the damping box 5 compresses downwards, absorbs gravitational potential energy and converts the gravitational potential energy into elastic potential energy, the second piston 504 in the piston cylinder 502 starts to move downwards under the action of pressure in the sealing sleeve 503, the second piston 504 moves downwards, the flow valve 506 is opened, the oil at the lower part of the sealing sleeve 503 flows to the upper part of the sealing sleeve 503 through the flow valve 506, when the pressure reaches a certain degree, the compression valve 508 is opened, the oil at the lower part of the sealing sleeve 503 flows to the storage space outside the sealing sleeve 503 through the compression valve 508, the resistance is generated by the upward movement of the oil liquid to slow down the downward movement of the second piston 504, so that the gravitational potential energy is restrained to a certain extent, when the gravitational potential energy is completely converted into the elastic potential energy by the second spring 501, the second piston 504 moves upward, the expansion valve 505 is opened, the oil liquid on the upper part of the sealing sleeve 503 flows to the lower part of the sealing sleeve 503 through the expansion valve 505 under the action of pressure, when the pressure reaches a certain degree, the compensation valve 509 is opened, the oil liquid in the external storage space of the sealing sleeve 503 flows back to the lower part of the sealing sleeve 503, and finally the upward resistance is applied to the second piston 504, so that the elastic potential energy of the second spring 501 is reduced, and the box body 2 can stably fall on the ground.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a hydraulic breaking hammer with buffering connection structure, includes wear-resisting cover (1), box (2) and fixed plate (3), its characterized in that: box (2) are installed to the inner wall of wear-resisting cover (1), protecgulum (204) are installed in the front of box (2), mounting panel (301) are installed to the front of protecgulum (204), lifter (302) are installed to the front of mounting panel (301), and the one end of lifter (302) extends into the inside of mounting panel (301), fixed plate (3) are installed to the other end of lifter (302).

2. The hydraulic demolition hammer with cushioned connection according to claim 1, characterized in that: bolt (101) are installed to the inner wall of wear-resisting cover (1), and the outer wall of wear-resisting cover (1) all extends at the both ends of bolt (101), and fixing bolt (102) are installed to the inner wall of wear-resisting cover (1), and the outer wall of wear-resisting cover (1) all extends at the both ends of fixing bolt (102), and fixing bolt (102) are located one side of bolt (101), and pump mouth (103) are installed to the outer wall of wear-resisting cover (1).

3. The hydraulic demolition hammer with cushioned connection according to claim 1, characterized in that: hanging plate (201) is installed at the top of box (2), and roof (202) are located one side of hanging plate (201), and the back mounted of box (2) has top cap (203), and back lid (401) are installed to the inner wall of box (2), and surge tank (5) are installed to the outer wall of box (2).

4. The hydraulic demolition hammer with cushioned connection according to claim 1, characterized in that: the outer wall of lifter (302) is installed dead lever (304), and lantern ring (306) are installed to the one end of dead lever (304), and first spring (303) are installed in the front of fixed plate (3), and shell fragment (305) are installed in the front of first spring (303), and fixed guide pole (307) are installed in the front of shell fragment (305), and fixed guide pole (307) are located the inside of lantern ring (306).

5. A hydraulic demolition hammer having a cushion attachment construction as claimed in claim 3 wherein: first piston (402) is installed to the inner wall of back lid (401), and the outer wall of back lid (401) is extended to the one end of first piston (402), piston ring (403) is installed to the outer wall of first piston (402), pneumatic cylinder (404) is installed to the inner wall of box (2), valve box (406) is installed to the inner wall of box (2), and valve box (406) is located one side of pneumatic cylinder (404), case (405) is installed to the inner wall of valve box (406), precursor (407) is installed to the one end of pneumatic cylinder (404), drill rod (4) is installed to the one end of precursor (407), and the one end of drill rod (4) extends into the inside of precursor (407), bush (408) is installed to the outer wall of drill rod (4), uide bushing (409) is installed to the outer wall of drill rod (4), and uide bushing (409) is located one side of bush (408).

6. A hydraulic demolition hammer having a cushion attachment construction as claimed in claim 3 wherein: a second spring (501) is installed on the inner wall of the damping box (5), a piston cylinder (502) is installed on the inner wall of the damping box (5), the piston cylinder (502) is located on one side of the second spring (501), a sealing sleeve (503) is installed at the bottom of the piston cylinder (502), one end of the sealing sleeve (503) extends into the piston cylinder (502), a second piston (504) is installed inside the piston cylinder (502), one end of the second piston (504) extends into the sealing sleeve (503), an expansion valve (505) is installed on the outer wall of the second piston (504), the expansion valve (505) is located on one side of the second piston (504), a circulation valve (506) is installed on the outer wall of the second piston (504), the circulation valve (506) is located on the other side of the second piston (504), a baffle (507) is installed on the inner wall of the sealing sleeve (503), and a compression valve (508) is installed on the top of the baffle (507), a compensation valve (509) is mounted on the top of the baffle (507), and the compensation valve (509) is located on one side of the compression valve (508).

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