Hydraulic breaking hammer and method

Abstract

The invention belongs to the field of quartering hammers, and particularly relates to a hydraulic quartering hammer and a method, the quartering hammer comprises side shells, a lower cylinder body, a transverse pin piece and a constraint flat pin body length and flat pin groove depth relation, a constraint groove is formed in the opposite side of the side shells, and the transverse pin piece is assembled in the constraint groove from the position between the side shells in the direction close to the lower cylinder body. And pressing and fixing of the flat pin body are completed. Compared with a transverse pin piece in a lateral inserting mode in the prior art, after the flat pin body is assembled in the flat pin groove, movement in the groove cannot occur, then the problem that a stepped groove appears in the flat pin groove cannot be caused, the problem that the flat pin body or the cylinder body is damaged too early is solved, and the structural stability and durability of the breaking hammer are guaranteed. And meanwhile, the problems that transverse pin holes are formed in the lower cylinder body, the lower cylinder body is damaged easily due to damage of transverse pins, and follow-up construction is affected can be solved.

Description

Technical Field

[0001] The invention belongs to the field of breaking hammers, in particular to a hydraulic breaking hammer and a method. Background Art

[0002] A hydraulic breaker is a machine that can convert hydraulic energy into mechanical energy to perform work. It is mainly used for crushing, demolition, excavation of hard layers, etc. It is usually installed on an excavator, loader or power station for use.

[0003] After searching, it was found that CN203846551U discloses a hydraulic breaker, in which a hole is opened on the cylinder body to install a cross pin to restrict the flat pin body in the flat pin groove, but there will be a problem of shaking of the flat pin body in the flat pin groove. The breaker will also inevitably have the problem of blank firing. Once the position of the flat pin body in the flat pin groove changes, a step groove will appear on the inner wall of the flat pin groove, which will accelerate the damage of the flat pin body or the cylinder body. Therefore, it is urgent to solve this kind of problem. Summary of the invention

[0004] The technical problems to be solved by the present invention are:

[0005] 1. Solve the problem that the flat pin body shifts in the flat pin groove and accelerates the damage of the flat pin body or cylinder body.

[0006] 2. Solve the problem of how to detect and replace the flat pin body as soon as possible when it is damaged.

[0007] 3. Solve the problem of inconvenient installation of drill rods on site when using breaker hammers.

[0008] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0009] A hydraulic breaker, comprising:

[0010] A lower cylinder body is provided with a flat pin groove, in which a flat pin body for limiting the drill rod is installed, and the length of the flat pin body is greater than or equal to the depth of the flat pin groove;

[0011] Side shells, two groups of side shells are provided and symmetrically distributed on both sides of the lower cylinder body, the two groups of side shells are connected by bolts and the lower cylinder body is clamped on the inner sides of the two groups of side shells, and the opposite sides of the side shells are provided with restraint grooves;

[0012] The cross pin is a telescopic structure and both ends of the cross pin can be freely extended and retracted between the two side shells to enter the constraint groove, and both ends are provided with extrusion inclined surfaces.

[0013] In the above scheme, the cross pin is described in detail. When the flat pin body is damaged, it cannot be discovered immediately, which may cause permanent damage to the cylinder body after the flat pin body is hit by the drill rod, or the flat pin body may be deformed and stuck in the flat pin groove, or the cross pin may be broken, which may cause the cross pin to be stuck or the edge of the pin hole to be damaged. The cross pin includes a clamping part, two telescopic ends slidably matched inside the clamping part, and an elastic body arranged between the two telescopic ends and arranged inside the clamping part;

[0014] The telescopic end is provided with a connecting column located on the outside of the clamping part, the connecting column is located on the side of the telescopic end facing away from the lower cylinder body, the telescopic end is socketed in the constraint groove, the end of the telescopic end is provided with an extrusion slope that gradually deviates outward along the side close to the lower cylinder body, and a pressure expansion part is provided on the side of the clamping part facing the flat pin body. After the pressure expansion part is subjected to the outward extrusion force of the flat pin body, it expands rapidly and drives the two telescopic ends to retract and compress the elastic body.

[0015] In the above scheme, the two telescopic ends are described in detail for maintaining synchronous action, so as to avoid the flat pin body on one side being damaged and the other set of telescopic ends not being telescopic, resulting in the problem that the cross pin cannot automatically fall off. A sinking groove is provided on the side of the clamping part facing the lower cylinder body, and a transmission gear is rotatably installed in the sinking groove. One end of the telescopic end extends into the sinking groove and is connected to a moving plate, and a rack is installed on the moving plate. Both racks are meshed with the transmission gear and are distributed on both sides of the transmission gear.

[0016] The two ends of the elastic body are respectively connected to the corresponding moving plates.

[0017] In the above scheme, the automatic falling off of the cross pin is described in detail, the battery cell and the control module are installed inside the pressing part, the battery cell and the control module are electrically connected, and the side of the pressing part is provided with an open groove, the open groove and the sinking groove are connected and the open groove;

[0018] The pressurized expansion member includes a resistance strain gauge installed on one side of the flat pin body and an airbag body assembled in the pressing part, the resistance strain gauge is connected to the control module via the circuit, the airbag body is installed in the open groove, a partition membrane and a resistance wire embedded in the partition membrane are pre-installed in the airbag body, the partition membrane separates the airbag body into a built-in compartment 1 and a built-in compartment 2, and the resistance wire is electrically connected to the control module via the circuit;

[0019] The resistance strain gauge and the telescopic end are coplanar with one side of the lower cylinder body.

[0020] In the above scheme, the airbag body and the control circuit are connected to form a closed loop, which is described in detail. A through electrode sheet is embedded in the open groove, and the through electrode sheet is electrically connected to the control module. An elastic terminal electrically connected to the internal resistance wire is provided on the airbag body, and the elastic terminal is electrically connected to the through electrode sheet.

[0021] In the above scheme, the connection relationship between the side shell and the lower cylinder body is described in detail. The side of the lower cylinder body is provided with a groove, and a limiting boss is provided on the side shell. The positions of the limiting boss and the groove correspond and match.

[0022] In the above scheme, how to facilitate the replacement of the drill rod at the construction site is described in detail. Four mounting side seats are installed on the side of the side shell body, and a hydraulic cylinder is installed on each mounting side seat. The ends of the four hydraulic cylinders are connected to a lifting frame, and a support ring is provided on the lifting frame. An embracing piece is installed on the support ring, and the embracing piece is used to clamp and fix the drill rod.

[0023] The embracing member comprises a fixing seat, on which an embracing body is slidably matched along the radial direction of the support ring, and a connecting spring is installed on the fixing seat, and the connecting spring is installed on the side of the embracing body facing away from the drill rod;

[0024] A driving member is installed on the lower cylinder body, and the driving member acts on the embracing body to approach the drill rod. The bottom surface of the driving member is provided with a slope surface 1 which is obliquely downwardly arranged along the direction away from the drill rod, and the top surface of the embracing body is provided with a slope surface 2 which is obliquely upwardly arranged along the direction close to the drill rod.

[0025] A method for assembling a hydraulic breaker, the steps are as follows:

[0026] Step 1: Main body assembly

[0027] The side shells are distributed on both sides of the lower cylinder body and fastened by bolts to form the main structure;

[0028] Step 2: Drill rod assembly

[0029] Adjust the axes of the drill rod and the lower cylinder body to coincide with each other, and pass the assembly end of the drill rod through the support ring until it partially enters the lower cylinder body;

[0030] The piston rod of the hydraulic cylinder drives the lifting frame and the supporting ring to move toward the side close to the lower cylinder body, so that the driving member acts on the embracing body to approach the drill rod. The embracing body clamps the flat pin clamping part of the drill rod from both sides, and corrects the angle of the drill rod until the flat pin clamping part and the flat pin groove are in correspondence along the assembly direction;

[0031] The piston rod of the hydraulic cylinder drives the lifting frame and the support ring to move to the side away from the lower cylinder body, and the clasping piece and the flat pin clamping part are completely separated;

[0032] While maintaining the angle, install the assembly end of the drill rod into the lower cylinder along the assembly direction;

[0033] Step 3: Assemble one side of the cross pin

[0034] Before assembling the flat pin body, pre-install a set of transverse pins, adjust the operating column to retract the two telescopic ends into the clamping part until it is smaller than the spacing between the two restraining grooves, fit the clamping part onto the surface of the lower cylinder body, release the operating column, and the telescopic ends enter the restraining grooves;

[0035] Step 4: Flat pin assembly

[0036] Assemble the flat pin body in the flat pin groove and ensure that the force exerted by the flat pin body on the pressing part when it contacts the pressing part is less than the set value;

[0037] Step 5: Assemble the other side of the cross pin

[0038] Adjust the two operating columns on the cross pin to retract the two telescopic ends into the clamping part until the distance is smaller than the spacing between the two restraining grooves. After the clamping part is attached to the surface of the flat pin body and the operating columns are released, the telescopic ends enter the restraining grooves.

[0039] Compared with the prior art, the present invention has the following beneficial effects compared with the previous method of inserting the cross pin structure sideways and opening the hole sideways in the lower cylinder body:

[0040] 1. The present invention uses a cross pin to restrict the flat pin body in the flat pin groove along the length direction of the flat pin body, and the cross pin is assembled from the side shell to the lower cylinder body. Compared with the conventional sideways insertion method, the cross pin can be assembled in the flat pin groove without moving in the groove, and thus will not cause the problem of stepped grooves in the flat pin groove, thus solving the problem of premature damage to the flat pin body or the cylinder body, and ensuring the structural stability and durability of the breaker. At the same time, it can also avoid the problem of opening a cross pin hole on the lower cylinder body and the problem of damage to the cross pin, which may cause damage to the lower cylinder body and affect subsequent construction.

[0041] 2. The present invention adopts a pressure expansion part on the cross pin part, which can apply pressure to the cross pin part when the flat pin body is damaged for the first time. After being compressed, the cross pin part can be ejected outward, so that the telescopic end is disengaged from the constraint groove, thereby avoiding direct damage to the cross pin part. It can also remind the operator that the flat pin body needs to be replaced, effectively solving the problem of the flat pin body being stuck inside the lower cylinder body due to further expansion and damage.

[0042] 3. The present invention is provided with a hydraulic cylinder on the side shell body, and utilizes the hydraulic cylinder to drive the movement of the connecting frame, the supporting ring and other structures to realize the angle correction of the drill rod, which is beneficial for the flat pin clamping area and the flat pin groove to correspond to each other in the upper and lower positions along the assembly direction. By maintaining the angle along the assembly direction, the drill rod is assembled up and down until the flat pin clamping area and the flat pin groove correspond to each other in the front and rear positions, and then the flat pin can be installed. When replacing the drill rod on site, the crushing end of the drill rod is pressed by the crawler track (using the taper of the crushing end), and the assembly end of the drill rod is tilted upward. The mechanical arm is controlled to coincide with the drill rod assembly port of the lower cylinder body of the breaker hammer and the axis of the drill rod, and the assembly end of the drill rod is inserted into the assembly port of the lower cylinder body along the assembly direction with the flat pin clamping area exposed on the outside. Then the crawler track is detached from the crushing end of the drill rod, and the hydraulic cylinder drives the lifting frame and the support ring to approach the lower cylinder body. The driving part acts on the embracing body to clamp the flat pin clamping area to complete the correction of the assembly angle of the flat pin clamping area on the drill rod. After the correction is completed, the crawler track re-presses the crushing end of the drill rod, and then the hydraulic cylinder drives the connecting frame away from the lower cylinder body, so that the embracing body is completely detached from the drill rod. The mechanical arm is controlled to keep the assembly end of the drill rod at this angle and insert it into the assembly port of the lower cylinder body along the assembly direction until the front and rear positions of the flat pin clamping area and the flat pin groove coincide. The flat pin body and the cross pin are installed in sequence to complete the on-site replacement of the drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0044] Figure 2 The cross-sectional structure of the cross pin of the present invention is Figure 1 ;

[0045] Figure 3 The cross-pin member cross-sectional structure of the present invention is Figure 2 ;

[0046] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0047] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0048] Figure 6 is a structural cross-sectional view of the airbag body of the present invention;

[0049] Figure 7 It is a schematic diagram of the structure of the airbag body of the present invention;

[0050] Figure 8 It is a schematic diagram of the pressing part of the present invention relative to the side of the lower cylinder body;

[0051] Fig. 9 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0052] Fig.10 for Fig. 9 A partial enlarged view of point C in the middle;

[0053] Fig.11 The state diagram when the drill rod angle is corrected for the embracing body;

[0054] Fig.12 It is a schematic diagram of the structure of the clasping body;

[0055] Fig.13 A top view of the support ring and fixings;

[0056] Fig.14 It is a horizontal cross-sectional view of the breaker at the flat pin body;

[0057] Fig.15 It is a structural schematic diagram of a fixed seat;

[0058] Fig.16 This is the control principle diagram of the pressurized expansion member.

[0059] In the figure: 10, lower cylinder body; 20, side shell; 21, limit boss; 22, groove; 23, mounting side seat; 24, hydraulic cylinder; 25, support ring; 26, lifting frame; 27, driving member; 28, fixed seat; 281, connecting spring; 282, embracing body; 30, cross pin; 31, clamping part; 311, recessed groove; 312, transmission gear; 313, rack; 314, moving plate; 315, battery cell; 316, control module; 317, opening groove; 32, telescopic end; 33, elastic body; 34, operating column; 40, flat pin body; 50, drill rod; 60, pressurized expansion member; 61, resistive strain gauge; 62, airbag body; 63, separator membrane; 64, resistance wire; 65, through port; 66, through electrode sheet; 67, elastic terminal. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0061] Example 1

[0062] like Figure 1 As shown, a hydraulic breaker hammer comprises:

[0063] The lower cylinder body 10 is provided with a flat pin groove, in which a flat pin body 40 for limiting the drill rod 50 is installed. The length of the flat pin body 40 is greater than or equal to the depth of the flat pin groove, preferably equal to. When greater than, the lengths of the two ends exposed outside need to remain consistent.

[0064] The side shells 20 are provided in two groups and are symmetrically distributed on both sides of the lower cylinder 10. The two groups of side shells 20 are connected by bolts and the lower cylinder 10 is clamped on the inner sides of the two groups of side shells 20. The opposite side of the side shells 20 is provided with a restraining groove, as shown in FIG. Fig.14 As shown;

[0065] The cross pin 30 is a telescopic structure and both ends of the cross pin 30 can be freely extended and retracted between the two side shells 20 to enter the constraint groove, and both ends are provided with extrusion inclined surfaces, and the inclination angle of the extrusion inclined surfaces is 45°-70°.

[0066] In the specific implementation, the cross pin 30 is first installed on the side shell 20 on one side, the flat pin bodies 40 are respectively installed in the corresponding flat pin grooves, and then another group of cross pins 30 are installed to fix the flat pin bodies 40. After fixation, the ends of the flat pin bodies 40 and the cross pins 30 are abutted, and the cross pins 30 are installed between the two side shells 20 close to the lower cylinder body 10, and the extrusion slope at the end of the cross pin 30 is used to realize the surface pressure constraint on the end of the flat pin body 40.

[0067] Example 2

[0068] On the basis of Example 1, Figure 2 As shown, the cross pin 30 includes a clamping portion 31, two telescopic ends 32 that are slidably fitted inside the clamping portion 31, and an elastomer 33 that is arranged between the two telescopic ends 32 and on the inner side of the clamping portion 31; the two telescopic ends 32 are retracted and extended by the elastomer 33, so as to complete the side abutment installation of the cross pin 30.

[0069] The telescopic end 32 is provided with an operating column 34 located outside the pressing portion 31 . The operating column 34 is located on the side of the telescopic end 32 facing away from the lower cylinder body 10 . The telescopic end 32 can be retracted by the operating column 34 , which is convenient for operation.

[0070] The telescopic end 32 is inserted into the constraint groove, and the end of the telescopic end 32 is provided with an extrusion slope that gradually deviates outward along the side close to the lower cylinder body 10. The extrusion slope can act on the constraint groove to realize that the telescopic end 32 enters the constraint groove while also moving the clamping part 31 closer to the lower cylinder body 10.

[0071] Example 3

[0072] On the basis of Example 2, Figures 3 to 8 As shown, a pressure expansion member 60 is provided on one side of the pressing portion 31 facing the flat pin body 40 . After the pressure expansion member 60 is subjected to the outward squeezing force of the flat pin body 40 , it expands rapidly to drive the two telescopic ends 32 to retract and compress the elastic body 33 .

[0073] Once the flat pin body 40 is damaged, the drill rod 50 moves the flat pin body 40 out of the groove under the impact of the piston in the breaker cylinder, acting on the pressurized expansion member 60, causing the pressurized expansion member 60 to expand, overcoming the force of the initial surface of the elastic body 33 that flattens the end of the pin body 40, so as to retract the telescopic end 32 and complete the separation from the constraint groove.

[0074] Example 4

[0075] In the solution of embodiment 3, since the flat pin bodies 40 of the breaker are generally installed in two groups, if one group of the flat pin bodies 40 is damaged, only one of them can be compressed, which easily causes the cross pin 30 to be unable to fall off automatically. The inventor makes the following design:

[0076] like Figure 3 , Figure 5 As shown, a recessed notch 311 is provided on the side of the pressing portion 31 facing the lower cylinder body 10, a transmission gear 312 is rotatably installed in the recessed notch 311, one end of the telescopic end 32 extends into the recessed notch 311 and is connected to a moving plate 314, a rack 313 is installed on the moving plate 314, and two racks 313 are meshed with the transmission gear 312 and are distributed on both sides of the transmission gear 312;

[0077] Two ends of the elastic body 33 are connected to corresponding moving plates 314 respectively.

[0078] When the pressurized expansion member 60 expands under pressure, when overcoming the force of the elastic body 33, it can simultaneously drive the telescopic end 32 to automatically retract, so that the two ends can move synchronously, thereby ensuring that the pressurized expansion member 60 is uniformly stressed and moves uniformly when it leaves the restraining groove.

[0079] Example 5

[0080] In the solution of Example 4, in order to achieve that when the pressing portion 31 is pressed, the pressurized expansion member 60 expands to overcome the force of the elastic body 33 and drives the telescopic end 32 to leave the restraining groove, the inventors make the following improvements:

[0081] like Figure 3 , Figure 4 , Fig.16 As shown, a battery cell 315 and a control module 316 are installed inside the pressing part 31, and the battery cell 315 and the control module 316 are electrically connected. An opening groove 317 is provided on the side of the pressing part 31, and the opening groove 317 is communicated with the sinking groove 311;

[0082] The pressurized expansion member 60 is provided with two ends corresponding to the two flat pin bodies 40 respectively. The pressurized expansion member 60 includes a resistance strain gauge 61 installed on one side relative to the flat pin body 40 and an airbag body 62 assembled in the pressing portion 31. The resistance strain gauge 61 is connected to the control module 316 via a circuit + signal line. The airbag body 62 is installed in the opening groove 317. A partition membrane 63 and a resistance wire 64 embedded in the partition membrane 63 are pre-installed in the airbag body 62. The partition membrane 63 separates the airbag body 62 into a built-in bin 1 and a built-in bin 2. When in use, the built-in bin 1 is at the top and is filled with quicklime, iron powder, aluminum powder, activated carbon and salt (sodium carbonate). The built-in bin 2 is at the bottom and is filled with water. The resistance wire 64 is electrically connected to the control module 316 via a circuit.

[0083] The resistance strain gauge 61 and the telescopic end 32 are coplanar or convex 0.1 mm relative to one side of the lower cylinder body 10;

[0084] Among them, Figure 8 As shown, a through opening 65 is provided on the side of the clamping portion 31 facing the lower cylinder body 10, and the through opening 65 is distributed on both sides of the resistive strain gauge 61. The through opening 65 is used to exert an outward thrust on the lower cylinder body through the through opening 65 after the airbag body 62 is expanded, so as to overcome the force of the elastic body 33.

[0085] like Figure 4 , Figure 6 , Figure 7 As shown, the opening groove 317 is embedded with a through electrode sheet 66, and the through electrode sheet 66 is electrically connected to the control module 316. The airbag body 62 is provided with an elastic terminal 67 electrically connected to the internal resistance wire 64, and the elastic terminal 67 is electrically connected to the through electrode sheet 66. The through electrode sheet 66 can ensure that the internal resistance wire 64 is electrically connected through the elastic terminal 67 after installation, and ensure that the resistance wire 64 can be powered to melt the separation film 63 during operation, so that the pre-filled materials inside the built-in bin 1 and the built-in bin 2 are in contact and chemically reacted, generating a large amount of heat or gas, so that the airbag body 62 expands to push the cylinder body and the moving plate 314 to move, to overcome the initial surface pressure of the elastic body 33 on the flat pin body 40, and to achieve automatic separation from the constraint groove.

[0086] like Fig.13 As shown, the side of the lower cylinder 10 is provided with a groove 22, and the side shell 20 is provided with a limiting boss 21, and the limiting boss 21 and the groove 22 are positioned correspondingly and adapted to facilitate the assembly of the lower cylinder 10 and the side shell 20.

[0087] Example 6

[0088] In the solution of the hydraulic breaker, since the drill rod 50 is heavy and difficult to assemble, especially the drill rod 50 cannot be assembled effectively and quickly at the construction site, the inventor has made the following improvements:

[0089] like Figures 9 to 14 As shown, four mounting side seats 23 are installed on the side of the side shell 20, and a hydraulic cylinder 24 is installed on each mounting side seat 23. The ends of the four hydraulic cylinders 24 are connected to a lifting frame 26, and a support ring 25 is provided on the lifting frame 26. Two sets of symmetrically distributed embracing parts are installed on the support ring 25, and the embracing parts are used to clamp and fix the drill rod 50.

[0090] The embracing member includes a fixing seat 28, such as Fig.15 As shown, the fixing seat 28 is provided with an embracing body 282 which is radially slidably matched with the support ring 25, and a connecting spring 281 is installed on the fixing seat 28. The connecting spring 281 is installed on the side of the embracing body 282 which is away from the drill rod 50;

[0091] A driving member 27 is installed on the lower cylinder body 10, and the driving member 27 acts on the embracing body 282 to approach the drill rod 50, and the bottom surface of the driving member 27 is provided with a slope surface 1 which is obliquely downwardly arranged along the direction away from the drill rod 50, and the top surface of the embracing body 282 is provided with a slope surface 2 which is obliquely upwardly arranged along the direction close to the drill rod 50.

[0092] The hydraulic cylinder 24 drives the lifting frame 26 and the support ring 25 to achieve the movement of approaching the lower cylinder body 10, and the driving member 27 will act on the embracing body 282 to approach the drill rod 50, so that the angle of the flat pin clamping area is corrected to the corresponding position along the assembly direction. After the position corresponds, the angle state is maintained, and the driving member 27 is moved in the reverse direction to completely disengage from the drill rod 50. After disengaging from the drill rod 50, the drill rod 50 is installed inside the lower cylinder body 10 along the assembly direction, and the assembly of the drill rod 50 is completed by the flat pin body 40 and the cross pin member 30. At the construction site, the crawler of the crawler vehicle is used to realize the tilting of the assembly end of the drill rod 50 and the maintenance of the drill rod angle.

[0093] A method for assembling a hydraulic breaker, the steps are as follows:

[0094] Step 1: Main body assembly

[0095] The side housings 20 are distributed on both sides of the lower cylinder body 10 and are fastened by bolts to form a main structure;

[0096] Step 2: Drill rod 50 assembly

[0097] Adjust the axes of the drill rod 50 and the lower cylinder body 10 to be in an overlapping state, and pass the assembly end of the drill rod 50 through the support ring 25 until part of it enters the lower cylinder body 10;

[0098] The piston rod of the hydraulic cylinder 24 drives the lifting frame 26 and the supporting ring 25 to move toward the side close to the lower cylinder body 10, so that the driving member 27 acts on the embracing body 282 to approach the drill rod 50. The embracing body clamps the flat pin clamping part of the drill rod 50 from both sides, and corrects the angle of the drill rod 50 until the flat pin clamping part and the flat pin groove are in the corresponding position along the assembly direction.

[0099] The piston rod of the hydraulic cylinder 24 drives the lifting frame 26 and the support ring 25 to move to the side away from the lower cylinder body 10, and the clasping piece and the flat pin clamping part are completely separated;

[0100] The drill rod 50 is installed into the lower cylinder body 10 along the assembly direction with the assembly end thereof maintained at the angle;

[0101] Step 3: Assemble one side of the cross pin 30

[0102] Before assembling the flat pin body 40, a set of transverse pins 30 are pre-installed, and the operating column 34 is adjusted to retract the two telescopic ends 32 into the clamping portion 31 until it is smaller than the distance between the two restraining grooves, and the clamping portion 31 is attached to the surface of the lower cylinder body 10 to release the operating column 34, and the telescopic ends 32 enter the restraining grooves;

[0103] Step 4: Assembly of flat pin body 40

[0104] Assemble the flat pin body 40 in the flat pin groove, and ensure that the force exerted by the flat pin body 40 on the pressing part 31 when contacting the pressing part 31 is less than a set value;

[0105] Step 5: Assemble the other side of the cross pin 30

[0106] Adjust the two operating columns 34 on the cross pin 30 to retract the two telescopic ends 32 partially into the clamping portion 31 until it is smaller than the spacing between the two restraining grooves. After the clamping portion 31 is attached to the surface of the flat pin body 40 and the operating columns 34 are released, the telescopic ends 32 enter the restraining grooves.

[0107] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A hydraulic breaker, characterized in that: include: A lower cylinder body (10) is provided with a flat pin groove, a flat pin body (40) for limiting the drill rod (50) is installed in the flat pin groove, and the length of the flat pin body (40) is greater than or equal to the depth of the flat pin groove; Side shells (20), two groups of side shells (20) are provided and symmetrically distributed on both sides of the lower cylinder body (10), the two groups of side shells (20) are connected by bolts and the lower cylinder body (10) is clamped on the inner sides of the two groups of side shells (20), and the opposite sides of the side shells (20) are provided with restraint grooves; The cross pin (30) is a telescopic structure and both ends of the cross pin (30) can freely telescope between the two side shells (20) to enter the restraining groove, and both ends are provided with extrusion inclined surfaces.

2. A hydraulic breaker according to claim 1, characterized in that: The cross pin (30) comprises a pressing portion (31), two telescopic ends (32) slidably fitted inside the pressing portion (31), and an elastic body (33) arranged between the two telescopic ends (32) and arranged inside the pressing portion (31); The telescopic end (32) is provided with an operating column (34) located outside the pressing portion (31). The operating column (34) is located on the side of the telescopic end (32) facing away from the lower cylinder body (10). The telescopic end (32) is inserted into the restraining groove. The end of the telescopic end (32) is provided with an extrusion inclined surface that gradually deviates outward along the side close to the lower cylinder body (10).

3. A hydraulic breaker according to claim 2, characterized in that: A pressure expansion member (60) is provided on one side of the pressing portion (31) facing the flat pin body (40). The pressure expansion member (60) rapidly expands after receiving the outward squeezing force of the flat pin body (40) and drives the two telescopic ends (32) to retract and compress the elastic body (33).

4. A hydraulic breaker according to claim 3, characterized in that: A recessed groove (311) is provided on one side of the pressing portion (31) facing the lower cylinder body (10), a transmission gear (312) is rotatably installed in the recessed groove (311), one end of the telescopic end (32) extends into the recessed groove (311) and is connected to a moving plate (314), a rack (313) is installed on the moving plate (314), and two racks (313) are both meshed with the transmission gear (312) and are distributed on both sides of the transmission gear (312); Both ends of the elastic body (33) are respectively connected to corresponding moving plates (314).

5. A hydraulic breaker according to claim 3, characterized in that: A battery cell (315) and a control module (316) are installed inside the pressing portion (31), the battery cell (315) and the control module (316) are electrically connected, and an opening groove (317) is provided on the side of the pressing portion (31), and the opening groove (317) and the sinking groove (311) are in communication; The pressurized expansion member (60) includes a resistance strain gauge (61) installed on one side of the flat pin body (40) and an airbag body (62) assembled in the pressing part (31), the resistance strain gauge (61) is connected to the control module (316) via the circuit, the airbag body (62) is installed in the opening groove (317), a partition membrane (63) and a resistance wire (64) embedded in the partition membrane (63) are pre-installed in the airbag body (62), the partition membrane (63) separates the airbag body (62) into a built-in compartment 1 and a built-in compartment 2, and the resistance wire (64) is electrically connected to the control module (316) via the circuit; A through opening (65) is provided on one side of the pressing portion (31) facing the lower cylinder body (10), and the through opening (65) is distributed on both sides of the resistance strain gauge (61).

6. A hydraulic breaker according to claim 5, characterized in that: The opening groove (317) is embedded with a through electrode sheet (66), and the through electrode sheet (66) is electrically connected to the control module (316). The airbag body (62) is provided with an elastic terminal (67) electrically connected to the internal resistance wire (64), and the elastic terminal (67) is electrically connected to the through electrode sheet (66).

7. A hydraulic breaker according to claim 1, characterized in that: A groove (22) is provided on the side of the lower cylinder body (10), and a limiting boss (21) is provided on the side shell body (20), and the limiting boss (21) and the groove (22) correspond in position and are adapted to each other.

8. A hydraulic breaker according to any one of claims 1 to 7, characterized in that: Four mounting side seats (23) are installed on the side of the side shell (20), and each mounting side seat (23) is installed with a hydraulic cylinder (24). The ends of the four hydraulic cylinders (24) are connected to a lifting frame (26), and a support ring (25) is provided on the lifting frame (26). The support ring (25) is installed with an embracing piece, and the embracing piece is used to clamp and fix the drill rod (50).

9. A hydraulic breaker according to claim 8, characterized in that: The embracing member comprises a fixed seat (28), an embracing body (282) is radially slidably fitted on the fixed seat (28) along the support ring (25), a connecting spring (281) is installed on the fixed seat (28), and the connecting spring (281) is installed on a side of the embracing body (282) facing away from the drill rod (50); A driving member (27) is installed on the lower cylinder body (10), and the driving member (27) acts on the embracing body (282) to approach the drill rod (50). The bottom surface of the driving member (27) is provided with a slope surface 1 which is obliquely arranged downward along a direction away from the drill rod (50), and the top surface of the embracing body (282) is provided with a slope surface 2 which is obliquely arranged upward along a direction close to the drill rod (50).

10. A method for assembling a hydraulic breaker, characterized in that: Here are the steps: Step 1: Main body assembly The side shells (20) are distributed on both sides of the lower cylinder body (10) and are fastened by bolts to form a main structure; Step 2: Assembly of drill rod (50) Adjust the axes of the drill rod (50) and the lower cylinder body (10) to be in an overlapping state, and pass the assembly end of the drill rod (50) through the support ring (25) until a portion of the assembly end of the drill rod (50) enters the lower cylinder body (10); The piston rod of the hydraulic cylinder (24) drives the lifting frame (26) and the supporting ring (25) to move toward the side close to the lower cylinder body (10), so that the driving member (27) acts on the embracing body (282) to approach the drill rod (50), and the embracing body clamps the flat pin clamping part of the drill rod (50) from both sides, and corrects the angle of the drill rod (50) until the flat pin clamping part and the flat pin groove correspond to each other along the assembly direction; The piston rod of the hydraulic cylinder (24) drives the lifting frame (26) and the supporting ring (25) to move to a side away from the lower cylinder body (10), and the clasping piece and the flat pin clamping part are completely separated; The drill rod (50) is installed into the lower cylinder body (10) along the installation direction with the assembly end thereof being completely installed while maintaining the angle; Step 3: Assemble one side of the cross pin (30) Before assembling the flat pin body (40), a set of transverse pins (30) are pre-installed, and the operating column (34) is adjusted to retract the two telescopic ends (32) into the clamping portion (31) until the distance is smaller than the distance between the two restraining grooves, and the clamping portion (31) is attached to the surface of the lower cylinder body (10) to release the operating column (34), and the telescopic ends (32) enter the restraining grooves; Step 4: Assembly of the flat pin body (40) The flat pin body (40) is assembled in the flat pin groove, and it is ensured that the force exerted by the flat pin body (40) on the pressing part (31) when contacting the pressing part (31) is less than a set value; Step 5: Assemble the other side of the cross pin (30) The two operating columns (34) on the cross pin (30) are adjusted to retract the two telescopic ends (32) partially into the pressing portion (31) until the distance is smaller than the distance between the two restraining grooves. After the pressing portion (31) is attached to the surface of the flat pin body (40) and the operating columns (34) are released, the telescopic ends (32) enter into the restraining grooves.

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