CN218624210U - Hard rock breaking buffer device of hydraulic mine hammer - Google Patents

Abstract

The utility model discloses a broken rock buffer of hard rock of hydraulic pressure mine hammer, including the buffing pad, the blotter, the support ring, the chopping block, go up the support guide ring, the drill rod cap, the lower extreme and the drill rod cap of buffing pad are connected to form the buffering appearance chamber with the top surface of drill rod cap, go up the support guide ring, the chopping block, the support ring, the blotter is installed in proper order at the buffering appearance intracavity by down, go up the support guide ring and install at the bottom of the chamber that the buffering holds the chamber, the centre of going up the support guide ring has and is used for providing the centre gripping guiding hole of centre gripping direction for the drill rod upper end. This broken rock buffer of hard rock holds the intracavity at the buffering and adds the support guide ring for to stretching into the buffering and holding the drill rod of intracavity and carry out the centre gripping and the direction, prevent the drill rod flexible deformation when prying the rock, change the anvil block structure of current variable cross section into the chopping block structure of single uniform cross section, avoid chopping block in use fracture, improve equipment life practices thrift manufacturing cost, and improve and strike efficiency.

Description

Hard rock breaking buffer device of hydraulic mine hammer

Technical Field

The utility model relates to a hydraulic engineering equipment manufacture technical field especially relates to a broken rock buffer of hard rock of hydraulic pressure mine hammer.

Background

At present, when the stone excavation construction is carried out at home and abroad, the commonly adopted method is mainly a drilling and blasting method. The drilling and blasting construction process can produce the consequences of harmful environment such as vibration, impact, noise, dust and the like. Meanwhile, the examination and the control of the explosive are also very strict in China. With the rapid development of economy in China, more engineering construction is developed to areas with dense population or higher requirements on environmental safety conditions, and the negative effects of blasting excavation construction on surrounding environments and buildings are more and more emphasized. The method adopts a non-blasting mode to excavate the stone, and becomes an effective way for avoiding explosive damage.

In the prior art, the applicant previously applied a method for excavating rocks based on a mine hammer with application number CN202010120578.6, which utilizes a hydraulic mine hammer to carry out rock breaking work, carries out the rock excavation in a non-blasting mode, and when the rock is actually broken, instantaneous impact force caused by the falling of a hammer body of the hydraulic hammer acts on a steel chisel so as to break the rock; the rock mass that needs to excavate is divided according to hardness, roughly can divide into soft rock and hard rock, at the broken rock in-process to hard rock, because the bounce of hard rock is too big, need establish buffer gear between drill rod and hammer block for the buffer protection to the hammer block, traditional hydraulic pressure mine hammer buffer seat's cushioning effect is unsatisfactory, unstable, easily leads to frame and relevant spare part to damage or lose efficacy, influences reliability and life-span that equipment used.

In the prior art, when a hammer core strikes an anvil in a free-falling mode to generate impact and vibration, an upper buffer body and a lower buffer body sequentially absorb the weakened impact and the vibration, a transverse body of the anvil moves along an inner cavity of the upper hammer body in a guiding manner, and the vibration and the lateral impact force of the drill rod in the process of isolated striking are transmitted to the hammer core through the anvil, so that multiple buffer protection is formed on the hammer core. However, the damping device is mainly applied to a pile hammer, and if the damping device is applied to a hydraulic mine hammer for rock breaking operation of hard rock, the following defects are also existed: firstly, an anvil block of the drill rod buffer device of the pile hammer body comprises a hammer pad and a chopping block, wherein the area of the hammer pad is smaller than that of the chopping block; secondly, when carrying out the broken rock operation of hard rock, if the rock fracture is incomplete, the drill rod will be carried to the incomplete rock of fracture to block the drill rod among the crack of hard rock, when prying the drill rod in the hard rock with power unit, traditional drill rod is flexible to be out of shape, consequently, the drill rod that carries out the broken rock of hard rock and does need to keep certain centre gripping direction length in the buffering holds the chamber, prevents the drill rod bending deformation when prying the rock, and the anvil block below of this pile hammer drill rod buffer lacks and sets up relevant part.

Therefore, it is necessary to develop a buffer device which can be better matched with a hydraulic mine hammer and is suitable for the hard rock breaking operation.

Disclosure of Invention

An object of the utility model is to foretell not enough, a broken rock buffer of hard rock of hydraulic pressure mine hammer is provided, this broken rock buffer of hard rock holds the intracavity at the buffering and adds the support guide ring, be used for holding and leading the drill rod that stretches into the buffering and hold the intracavity, prevent that the drill rod is flexible to be out of shape when prizing the rock, change the anvil structure of current variable cross section into the chopping block structure of single uniform cross section, avoid chopping block in use fracture, improve equipment life, and the production cost is saved, and improve and strike efficiency.

The technical scheme is as follows:

the utility model provides a broken rock buffer of hard rock of hydraulic pressure mine hammer, includes buffing pad, blotter, support ring, chopping block, goes up support guide ring, drill rod cap, the lower extreme of buffing pad with the drill rod cap is connected, and with the top surface of drill rod cap forms the buffering appearance chamber, go up support guide ring, chopping block, support ring, blotter from lower to upper install in proper order the intracavity is held in the buffering be equipped with annular spacing boss on the inside wall in buffering appearance chamber, be equipped with on the bottom outside circumference edge of support ring with annular spacing boss assorted annular spacing notch, the support ring passes through annular spacing notch card is in the top of annular spacing boss, the centre of blotter, support ring has first round hole, second round hole respectively, first round hole with the corresponding overlapping formation hammer bore of second round hole, it installs to go up the support guide ring at the bottom of the chamber in buffering appearance chamber, the centre of going up the support guide ring has the centre gripping guide bore that is used for providing the centre gripping direction for the drill rod upper end.

The chopping block support is characterized by further comprising a plurality of dustproof covers and a plurality of limiting pins, a plurality of chopping block limiting holes are formed in the side wall of the buffer base, the distance from the chopping block limiting holes to the bottom surface of the support ring is larger than the thickness of the chopping block, the distance from the chopping block limiting holes to the bottom of the buffer containing cavity is larger than the thickness of the upper support guide ring, and the dustproof covers or the limiting pins are movably mounted on the chopping block limiting holes.

The dustproof cover, the limiting pin and the anvil block limiting hole are two in number, and the two chopping block limiting holes are formed in two opposite sides of the side wall of the buffer seat respectively.

The buffer seat comprises a first flange, a first cylinder and a second flange, the upper end of the first cylinder is connected with the bottom surface of the first flange, the lower end of the first cylinder is connected with the top surface of the second flange, and the chopping block limiting hole is formed in the side wall of the first cylinder.

The steel chisel cap includes third flange, second barrel, the upper end of second barrel with the bottom surface of third flange is connected, go up the support guide ring and install on the top surface of third flange.

The drill rod cap further comprises a drill rod limiting convex ring, and the drill rod limiting convex ring is arranged in the middle of the inner side wall of the second cylinder.

The drill rod cap further comprises a wear-resistant guide cylinder and a fourth flange, the lower end of the second cylinder is connected with the fourth flange, the fourth flange and the drill rod limiting convex ring form a first inner annular groove, and the wear-resistant guide cylinder is installed on the first inner annular groove.

The steel chisel cap also comprises a plurality of screws, and the lower end of the second cylinder is connected with the fourth flange through the plurality of screws.

The lower end of the buffer seat is connected with the steel drill cap through the plurality of bolt fasteners.

Still include the lug, the lug is established on the lateral wall of buffer seat.

It should be noted that:

the foregoing "first and second" \ 8230, "does not denote any particular quantity or order, but rather is used merely to distinguish one name from another.

In the description of the present invention, it should be understood that the terms "upper" and "lower" are used as the terms of the orientation or the positional relationship based on the drawings, or the orientation or the positional relationship that the product of the present invention is usually placed when using, or the orientation or the positional relationship that the person skilled in the art usually understands, only for the convenience of describing the present invention and simplifying the description, but not for the indication or the suggestion that the device or the element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be interpreted as the limitation of the present invention.

The thickness refers to the dimension distance in the vertical direction when the product of the utility model is used,

the advantages or principles of the invention are explained below:

1. the utility model provides a broken rock buffer of hard rock of hydraulic pressure mine hammer, it includes the buffing pad, the blotter, the support ring, the chopping block, go up the support guide ring, the drill rod cap, in use, strike the chopping block after the hammer core whereabouts, and transmit the striking force to the drill rod through the chopping block, the drill rod strikes on the rock mass, the chopping block is along the buffering appearance chamber lapse in the buffing pad, and simultaneously, the upper segment of drill rod is along last support guide ring lapse, when the chopping block is close to last support guide ring, go up the support guide ring and can absorb the undershoot power of chopping block, it can prevent the impact of chopping block undershoot power to the drill rod cap to go up the support guide ring, increase the direction of drill rod upper segment simultaneously, and the upper segment of centre gripping drill rod, if the rock is opened incompletely and blocks the drill rod, when needing the drill rod in the power mechanism prying hard rock, go up the support guide ring can carry out the centre gripping to the drill rod upper segment of remaining in the buffering appearance chamber, prevent that the drill rod bending deformation when prying the rock; then, the rock mass is impacted by the drill rod and rebounds, the rebound force of the rock mass is transmitted to the support ring through the drill rod and the chopping block, the support ring absorbs a part of energy of the rebound force of the rock mass, then the support ring transmits the rebound force of the other part of the rock mass to the cushion pad, and the cushion pad absorbs the rebound force of the other part of the rock mass for many times, so that the overlarge impact on the hammer shell is prevented; in addition, because the chopping block adopts a single uniform cross section structure, the structure of the anvil block adopting a variable cross section in the background technology is changed, the structure is simpler, the anvil block is not easy to break, the cost is saved, and the structure of the chopping block and the hammer pad in the background technology is changed into a single chopping block structure, so that the transmission thickness of the impact force from the hammer core to the drill steel is reduced, and the striking efficiency is improved; have again, this reality is novel changes blotter and support ring by installing from the cushion seat top, makes the dismouting of blotter and support ring more convenient, practices thrift the dismouting cost of labor.

2. The utility model discloses still include a plurality of shield, a plurality of spacer pin, be equipped with the spacing hole of a plurality of chopping blocks on the lateral wall of buffer seat, when needing to change the drill rod, can pull down the shield from the spacing hole of chopping block earlier, insert the spacer pin on the spacing hole of chopping block, the spacer pin can limit the chopping block and move down, when dismantling the drill rod cap and change the drill rod, prevent that the chopping block from deviating from in the buffer cavity of buffer seat, the setting of spacer pin can conveniently change the drill rod in the job site, easy operation, labour saving and time saving; after the drill rod is replaced, the limiting pin needs to be detached, the cover is prevented from being installed again in the limiting hole of the chopping block, dust and broken stone are more in the rock breaking process, the dustproof cover is installed in the limiting hole of the chopping block, the dust and the broken stone can be effectively prevented from entering the buffer cavity of the buffer base, and the damage to components in the buffer base is avoided. Preferably, the number of the dust cover, the limiting pin and the anvil block limiting hole is two.

3. The utility model discloses a buffer seat includes first flange, first barrel, second flange, and simple structure practices thrift manufacturing cost.

4. The utility model discloses a drill rod cap establishes the spacing bulge loop of drill rod on the middle part of second barrel inside wall, avoids in the use, and the drill rod is deviate from the drill rod cap.

5. The utility model discloses a drill rod cap still includes wear-resisting guide cylinder, fourth flange, and the drill rod can be followed the inner wall of wear-resisting guide cylinder and carried out the slip of leading from top to bottom, improves the life of drill rod cap, and the axial displacement of wear-resisting guide cylinder can be blocked in the setting of fourth flange.

6. The utility model discloses a fourth flange is connected through the lower extreme of a plurality of screws with the second barrel, makes things convenient for the dismouting of wear-resisting guide cylinder to change.

7. The utility model discloses still include a plurality of bolt fasteners, the lower extreme of buffer seat is connected with the drill rod cap through a plurality of bolt fasteners, makes things convenient for the dismouting of drill rod cap.

8. The utility model discloses still include the lug, the setting of lug makes things convenient for this buffer's hoist and mount.

Drawings

Fig. 1 is the utility model discloses hydraulic pressure mine hammer's broken rock buffer's of hard rock stereogram.

Fig. 2 is the utility model discloses hydraulic pressure mine hammer's broken rock buffer's of hard rock assembly structure sketch map.

Fig. 3 is the embodiment of the utility model discloses hydraulic pressure mine hammer's broken rock buffer's of hard rock cross-sectional view.

Fig. 4 is a sectional view of the hard rock breaking buffer device of fig. 3 after a drill steel is installed.

Description of reference numerals:

10. buffer seat, 11, annular spacing boss, 12, the spacing hole of chopping block, 13, first flange, 14, first barrel, 15, the second flange, 20, the blotter, 21, the hammer hole, 30, the support ring, 31, the spacing notch of annular, 40, the chopping block, 50, go up the support guide ring, 51, centre gripping guide hole, 60, the drill rod cap, 61, the third flange, 62, the second barrel, 63, the spacing bulge loop of drill rod, 64, wear-resisting guide cylinder, 65, the fourth flange, 66, the screw, 71, the shield, 72, the spacer pin, 81, bolt fastener, 82, the lug, 91, the drill rod, 92, the hammer core.

Detailed Description

The following is a detailed description of the specific technical solutions of the present invention through the embodiments of the present invention.

Examples

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "mounted" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are illustrated in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The utility model provides a broken rock buffer of hard rock of hydraulic pressure mine hammer is for better and hydraulic pressure mine hammer cooperation use and develop, can be extensive be used for various infrastructure engineering construction, utilize the utility model discloses a buffer carries out the broken rock operation of efficient.

Referring to fig. 1 to 4, the hard rock breaking buffer device of the hydraulic mine hammer comprises a buffer base 10, a buffer pad 20, a support ring 30, a chopping block 40, an upper support guide ring 50 and a drill steel cap 60, wherein the lower end of the buffer base 10 is connected with the drill steel cap 60 and forms a buffer cavity with the top surface of the drill steel cap 60, the upper support guide ring 50, the chopping block 40, the support ring 30 and the buffer pad 20 are sequentially installed in the buffer cavity from bottom to top, an annular limit boss 11 is arranged on the inner side wall of the buffer cavity, an annular limit notch 31 matched with the annular limit boss 11 is arranged on the circumferential edge of the outer side of the bottom of the support ring 30, the support ring 30 is clamped above the annular limit boss 11 through the annular limit notch 31, the buffer pad 20 and the middle of the support ring 30 are respectively provided with a first round hole and a second round hole, the first round hole and the second round hole are correspondingly overlapped to form a hammer hole 21, the upper support guide ring 50 is installed at the bottom of the buffer cavity, and a clamping guide hole 51 for providing clamping guide for the upper end 91 of a drill steel rod is arranged in the middle of the upper support ring 50.

When the hammer core 92 is used, the hammer core 92 falls down to strike the chopping board 40, the striking force is transmitted to the steel chisel 91 through the chopping board 40, the steel chisel 91 strikes on a rock body, the chopping board 40 slides downwards along the buffer cavity in the buffer seat 10, meanwhile, the upper section of the steel chisel 91 slides downwards along the upper support guide ring 50, when the chopping board 40 approaches the upper support guide ring 50, the upper support guide ring 50 can absorb the downward striking force of the chopping board 40, the upper support guide ring 50 can prevent the downward striking force of the chopping board 40 from impacting the steel chisel cap 60, meanwhile, the guide of the upper section of the steel chisel 91 is increased, the upper section of the steel chisel 91 is clamped, if the rock is not completely cracked and blocks the steel chisel 91, and when a power mechanism is needed to pry the steel chisel 91 in the hard rock, the upper support guide ring 50 can clamp the upper section of the steel chisel 91 left in the buffer cavity, and the steel chisel 91 is prevented from bending and deforming when the rock is pried; then, the rock mass is impacted by the drill rod 91 and rebounds, the rebound force of the rock mass is transmitted to the support ring 30 through the drill rod 91 and the chopping block 40, the support ring 30 absorbs a part of energy of the rebound force of the rock mass, then the support ring 30 transmits the rebound force of the other part of the rock mass to the cushion pad 20, the cushion pad 20 absorbs the rebound force of the other part of the rock mass for multiple times, and excessive impact on the hammer shell is prevented; in addition, because the chopping block 40 adopts a single uniform cross-section structure, the anvil block structure adopting a variable cross-section in the background technology is changed, the structure is simpler, the chopping block is not easy to break, the cost is saved, and the structure of the chopping block 40 and the hammer pad in the background technology is changed into the structure of the single chopping block 40, so that the transmission thickness of the impact force from the hammer core 92 to the drill rod 91 is reduced, and the striking efficiency is improved; moreover, this reality is novel changes blotter 20 and support ring 30 by installing from buffer seat 10 top, makes blotter 20 and support ring 30's dismouting more convenient, practices thrift dismouting cost of labor.

The buffer seat 10 includes a first flange 13, a first cylinder 14, and a second flange 15, the upper end of the first cylinder 14 is connected to the bottom surface of the first flange 13, the lower end of the first cylinder 14 is connected to the top surface of the second flange 15, and the cutting board limiting hole 12 is formed in the side wall of the first cylinder 14. Simple structure and low production cost.

The drill rod cap 60 includes a third flange 61, a second cylinder 62, a drill rod limit protruding ring 63, a wear-resistant guide cylinder 64, a fourth flange 65, and a plurality of screws 66, wherein the upper end of the second cylinder 62 is connected with the bottom surface of the third flange 61, and the upper support guide ring 50 is mounted on the top surface of the third flange 61. The steel chisel limit convex ring 63 is arranged on the middle part of the inner side wall of the second cylinder 62. The middle part of the inner side wall of the second cylinder 62 of the steel chisel cap 60 is provided with a steel chisel limiting convex ring 63, so that the steel chisel 91 is prevented from being separated from the steel chisel cap 60 in the using process.

The lower end of the second cylinder 62 is connected with a fourth flange 65, the fourth flange 65 and the drill steel limiting convex ring 63 form a first inner annular groove, and a wear-resistant guide cylinder 64 is installed on the first inner annular groove. The drill steel 91 can slide up and down along the inner wall of the wear-resistant guide cylinder 64, so that the service life of the drill steel cap 60 is prolonged, and the axial movement of the wear-resistant guide cylinder 64 can be blocked by the arrangement of the fourth flange 65.

The lower end of the second cylinder 62 is connected to a fourth flange 65 by a plurality of screws 66. The wear-resistant guide cylinder 64 is convenient to disassemble, assemble and replace.

The utility model discloses still include a plurality of shield 71, a plurality of spacer pin 72, lug 82, a plurality of bolt fastener 81, be equipped with the spacing hole 12 of a plurality of chopping blocks on the lateral wall of buffer base 10, the distance of the spacing hole 12 of chopping block to support ring 30 bottom surface is greater than the thickness of chopping block 40, the distance of the spacing hole 12 of chopping block to the cushion chamber end is greater than the thickness that supports guide ring 50, shield 71 or spacer pin 72 movable mounting are on the spacing hole 12 of chopping block. The side wall of the buffer seat 10 is provided with a plurality of chopping block limiting holes 12, when the drill rod 91 needs to be replaced, the dust cover 71 can be detached from the chopping block limiting holes 12, the limiting pin 72 is inserted into the chopping block limiting holes 12, the limiting pin 72 can limit the chopping block 40 to move downwards, when the drill rod cap 60 is detached and the drill rod 91 is replaced, the chopping block 40 is prevented from being separated from the buffer containing cavity of the buffer seat 10, the setting of the limiting pin 72 can conveniently replace the drill rod 91 in a construction site, the operation is simple, and time and labor are saved; after changing good drill rod 91, need demolish spacer pin 72 to will prevent to cover at the spacing hole 12 of chopping block and adorn again, because of at broken rock in-process, dust and rubble piece are more, adorn shield 71 at the spacing hole 12 of chopping block, can prevent effectively that dust and rubble piece from getting into the buffering of buffing pad 10 and holding the chamber in, avoid the part damage in the buffing pad 10. Preferably, the number of the dust-proof cover 71, the limiting pin 72 and the anvil limiting hole is two, and the two cutting board limiting holes 12 are respectively arranged on two opposite sides of the side wall of the buffer seat 10.

The lower end of the cushion socket 10 is connected to the drill nut 60 by a plurality of bolt fasteners 81. The steel chisel cap 60 is convenient to disassemble and assemble. The lifting lug 82 is provided on the outer side wall of the cushion socket 10. The hoisting of the buffer device is convenient.

In order to test the performance, the applicant will the utility model provides a broken rock buffer of hard rock of hydraulic pressure mine hammer installs and carries out actual construction on the hydraulic pressure mine hammer that the applicant applied for earlier. Under secret condition, engineering test model machine has actually been applied to the construction of the heavy items such as Guangzhou new white cloud international airport project, certain great bridge and tunnel engineering project of zhai, hong Kong oil masquerade project, and the actual stone excavation construction through tens of thousands square meters verifies, utilizes the utility model provides a buffer's hydraulic pressure mine hammer carries out the stone excavation, and the equipment that uses is few, efficient, the security is good, and the stone excavation project construction that is particularly suitable for city and adjacent crowd and gathers residential area to with its environmental protection (do not have the explosion), high-efficient (the progress is fast), the high quality (the operation face is clean and tidy) advantage obtains the customer and good comment, has higher practicality.

The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the concept of the utility model belong to the protection scope of the utility model.

Claims (10)

1. The utility model provides a broken rock buffer of hard rock of hydraulic pressure mine hammer which characterized in that, includes buffing pad, blotter, support ring, chopping block, goes up support guide ring, drill rod cap, the lower extreme of buffing pad with the drill rod cap is connected, and with the top surface of drill rod cap forms the buffering appearance chamber, go up support guide ring, chopping block, support ring, blotter from bottom to top install in proper order the buffering holds the intracavity be equipped with annular spacing boss on the inside wall in buffering appearance chamber, be equipped with on the bottom outside circumference edge of support ring with annular spacing boss assorted annular spacing notch, the support ring passes through annular spacing notch card is in the top of annular spacing boss, the centre of blotter, support ring has first round hole, second round hole respectively, first round hole with the corresponding overlapping formation hammer hole of second round hole, go up the support guide ring and install at the chamber bottom of buffering appearance chamber, the centre of going up the support guide ring has the centre gripping guide hole that is used for providing the centre gripping direction for the drill rod upper end.

2. The hard rock breaking buffer device of the hydraulic mine hammer according to claim 1, further comprising a plurality of dust covers and a plurality of limit pins, wherein a plurality of cutting board limit holes are formed in the side wall of the buffer base, the distance from the cutting board limit holes to the bottom surface of the support ring is greater than the thickness of the cutting board, the distance from the cutting board limit holes to the bottom of the buffer containing cavity is greater than the thickness of the upper support guide ring, and the dust covers or the limit pins are movably mounted on the cutting board limit holes.

3. The hydraulic mining hammer hard rock breaking buffer device as claimed in claim 2, wherein the number of the dust cover, the limiting pin and the anvil limiting hole is two, and the two cutting board limiting holes are respectively formed in two opposite sides of the side wall of the buffer seat.

4. The hydraulic mining hammer hard rock breaking buffer device as claimed in claim 3, wherein the buffer base comprises a first flange, a first cylinder and a second flange, the upper end of the first cylinder is connected with the bottom surface of the first flange, the lower end of the first cylinder is connected with the top surface of the second flange, and the cutting board limiting hole is formed in the side wall of the first cylinder.

5. The hard rock breaking buffer device of the hydraulic mining hammer according to any one of claims 1 to 4, wherein the drill steel cap comprises a third flange and a second cylinder, the upper end of the second cylinder is connected with the bottom surface of the third flange, and the upper support guide ring is mounted on the top surface of the third flange.

6. The hydraulic mining hammer hard rock breaking buffer device of claim 5, wherein the drill steel cap further comprises a drill steel limiting convex ring, and the drill steel limiting convex ring is arranged on the middle part of the inner side wall of the second cylinder body.

7. The apparatus as claimed in claim 6, wherein the drill steel cap further comprises a wear-resistant guide cylinder, a fourth flange, the lower end of the second cylinder is connected to the fourth flange, the fourth flange and the drill steel limit protruding ring form a first inner annular groove, and the wear-resistant guide cylinder is mounted on the first inner annular groove.

8. The apparatus of claim 7, wherein the drill steel cap further comprises a plurality of screws, and the lower end of the second cylinder is connected to the fourth flange by a plurality of the screws.

9. The apparatus as claimed in claim 5, further comprising a plurality of bolt fastening members, wherein the lower end of the buffer base is connected to the drill steel cap by a plurality of the bolt fastening members.

10. The hydraulic mining hammer hard rock breaking buffer device as claimed in claim 5, further comprising a lifting lug arranged on an outer side wall of the buffer seat.

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