Dismounting tool for inner sleeve and outer sleeve of breaking hammer

Abstract

A dismounting tool for an inner sleeve and an outer sleeve of a breaking hammer is characterized in that the dismounting tool comprises an outer sleeve threaded clamping plate, an inner sleeve threaded clamping plate, a stress screw, a cover plate and a fixing screw, when the outer sleeve threaded clamping plate is installed at a preset position, preset gaps are formed between the two sides of the outer sleeve threaded clamping plate and the inner wall of a front cylinder body, and a cut edge is arranged on the periphery of the outer sleeve threaded clamping plate; the outer sleeve threaded clamping plate can be fixedly connected with the cover plate through the fixing screw rod, the outer sleeve threaded clamping plate can be in threaded connection with the stress screw rod, and the inner sleeve threaded clamping plate can be in threaded connection with the stress screw rod. The outer sleeve threaded clamping plate is transversely plugged into the front cylinder body from the lower opening of the front cylinder body, the installation depth is greatly reduced, installation is easy, operation is easy and convenient, and a preset gap facilitates overturning installation of the outer sleeve threaded clamping plate. The outer sleeve threaded clamping plate is directly clamped and fixed to the outer sleeve through the cover plate and the fixing screw rod, installation of the stress screw rod is facilitated, the outer sleeve threaded clamping plate is not prone to deflection, and the outer sleeve threaded clamping plate and the stress screw rod are not prone to loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of breaker hammers, in particular to a tool for disassembling inner and outer jackets of breaker hammers. Background Art

[0002] Hydraulic breaker is mainly used in conjunction with main machines such as excavators. In actual work, the piston of the hydraulic breaker accelerates to hit the drill rod, and the drill rod collides with the target object to achieve the effect of breaking the target object.

[0003] The inner and outer sleeves of a hydraulic breaker are consumable parts of the hydraulic breaker. The inner and outer sleeves of a hydraulic breaker are located inside the front cylinder, between the drill rod and the front cylinder. As the inner and outer sleeves are often rubbed by the drill rod, they will gradually wear and become thinner, which will affect the use of the hydraulic breaker and need to be replaced in time. The combination of the inner and outer sleeves and the front cylinder has high requirements, and generally adopts an interference fit, so it is difficult to disassemble.

[0004] The disassembly scheme generally adopted in practice is: the inner and outer sleeves are cut into small pieces by gas cutting and disassembled, but gas cutting can easily damage the front cylinder body and affect the subsequent use of the breaker; or the front cylinder body is transported back to the factory and the inner sleeve is pressed out by a press. This scheme requires the entire front cylinder body to be disassembled and transported, and the overall cost is relatively high.

[0005] The utility model now with application number 202121561213.3 discloses a welding-free disassembly tool for the inner and outer bushings of a breaker hammer. The disassembly tool includes a screw, an upper nut seat, and a lower nut seat arranged inside the front cylinder body. An upper stopper is arranged at the lower end of the upper nut seat, and a lower stopper is arranged at the lower end of the lower nut seat. An annular groove for placing the upper stopper is arranged under the inner bushing.

[0006] There are two steps to dismantle the inner and outer bushings inside the front cylinder body: the first step is to dismantle the outer bushing inside the lower end of the front cylinder body, put the lower nut seat and the lower block into the front cylinder body from the upper opening of the front cylinder body, adjust the placement of the lower block so that the lower end of the lower block contacts the upper end surface of the outer bushing, insert the screw from the lower opening of the front cylinder body, make the screw and the lower nut seat screw together, use a tool to limit the lower nut seat and then continuously rotate the force rod to make the screw continue to rise inside the front cylinder body until the upper end of the screw exceeds the upper opening of the front cylinder body, fix the front cylinder body and knock it with external force to make the outer bushing and the front cylinder body fit together. Separation; the second step is to remove the inner sleeve in the middle of the front cylinder body, put the upper nut seat and the upper block into the front cylinder body from the upper opening of the front cylinder body, adjust the placement of the upper block so that the upper block is located in the annular groove opened on the inner wall of the inner sleeve, and make the lower end of the upper block contact with the lower section of the annular groove, insert the screw from the lower opening of the front cylinder body, so that the screw and the upper nut seat are screwed together, use a tool to limit the upper nut seat and continuously rotate the force rod to make the screw continue to rise inside the front cylinder body until the upper end of the screw exceeds the upper opening of the front cylinder body, fix the front cylinder body and knock it with external force to separate the inner sleeve from the front cylinder body.

[0007] The above solution has the following problems:

[0008] When installing the disassembly tool, it is inconvenient to adjust and place the component because the position where the component is to be installed is too deep and the space in the front cylinder is limited, which greatly increases the difficulty of installing the disassembly tool;

[0009] During installation, it is necessary to use another tool to fix the lower nut seat or the upper nut seat, but the space in the strong cylinder is limited, and the operator's operable space is too small, which greatly increases the difficulty of fixing the upper nut seat and the lower nut seat, and increases the difficulty of using the disassembly tool. In addition, when the screw is knocked, the disassembly tool is easy to loosen, resulting in difficulty in applying force to the screw, resulting in low disassembly efficiency. Summary of the invention

[0010] In view of the above problems, the utility model provides a disassembly tool which is simple and convenient to install, not prone to loosening, and has high disassembly efficiency.

[0011] A tool for disassembling inner and outer sleeves of a breaker hammer, characterized in that it includes an outer sleeve threaded clamp, an inner sleeve threaded clamp, a force-bearing screw, a cover plate and a fixing screw. When the outer sleeve threaded clamp is installed in a preset position, there is a preset gap between the two sides of the outer sleeve threaded clamp and the inner wall of the front cylinder body. A cutting edge is arranged around the outer sleeve threaded clamp. The outer sleeve threaded clamp can be fixedly connected to the cover plate through the fixing screw. The outer sleeve threaded clamp can be threadedly connected to the force-bearing screw. The inner sleeve threaded clamp can be threadedly connected to the force-bearing screw.

[0012] In the above-mentioned breaker inner and outer jacket disassembly tool, the cutting edge setting enables the outer jacket threaded clamping plate to be laterally inserted into the front cylinder body from the lower opening of the front cylinder body, greatly reducing the installation depth of the outer jacket threaded clamping plate. The preset gap facilitates the outer jacket threaded clamping plate to be flipped over and installed on the upper end surface of the outer jacket, thereby facilitating the installation of the outer jacket threaded clamping plate; the cover plate and the fixing screw can play the role of fixing the outer jacket threaded clamping plate, and can clamp the outer jacket threaded clamping plate on the outer jacket. The outer jacket threaded clamping plate can be fixed without additional tools, thereby facilitating the installation of the force-bearing screw. At the same time, the outer jacket threaded clamping plate is not easy to deflect, and the outer jacket threaded clamping plate and the force-bearing screw are not easy to loosen.

[0013] In the above-mentioned breaker inner and outer jacket disassembly tool, a cover plate through hole is provided on the cover plate, a clamping plate threaded hole is provided on the outer jacket threaded clamping plate, the fixing screw is fixed to the outer jacket threaded clamping plate through the clamping plate threaded hole, and the cover plate is installed on the fixing screw through the cover plate through hole and fixed by a fixing member.

[0014] In this way, the cover plate, the fixing screw rod and the outer sleeve threaded clamping plate are fixedly connected.

[0015] In the above-mentioned inner and outer casing disassembly tool for a breaker hammer, the outer peripheral wall of the outer casing thread clamping plate is partially recessed inward to form a recessed area, and the recessed area extends to one side of the outer casing thread clamping plate.

[0016] In the prior art, when the outer bushing needs to be removed, it is difficult to adjust the position due to the small space in the front cylinder body, resulting in installation difficulties. The solution of this patent reduces the volume of the outer sleeve thread clamp, making the overall shape of the outer sleeve thread clamp closer to a trapezoid, which is convenient for the outer sleeve thread clamp to be flipped in a limited space and avoid getting stuck during the flipping process.

[0017] In the above-mentioned inner and outer jacket disassembly tool for a breaker hammer, the end edge of the outer jacket threaded clamping plate in the extending direction of the recessed area is rounded. The setting of the rounded corner further reduces the volume of the outer jacket threaded clamping plate, is more conducive to the flipping installation of the outer jacket threaded clamping plate, and avoids jamming; and the rounded corner can just improve the overall structural strength of the outer jacket threaded clamping plate.

[0018] In the above-mentioned inner and outer jacket disassembly tool of the breaker, the cutting edges are arranged on both sides of the outer jacket threaded clamping plate, the distance L1 between the two cutting edges is smaller than the inner diameter L2 of the outer jacket, a threaded hole 1 is arranged on the outer jacket threaded clamping plate, the force-bearing screw is threadedly connected with the outer jacket threaded clamping plate through the threaded hole 1, and the force-bearing surface of the force-bearing screw can be against the piston. The setting of the cutting edges and the thread facilitates the installation and use of the outer jacket threaded clamping plate; the piston of the breaker is used as the power source, and there is no need to disassemble the front cylinder body and carry it to other places to disassemble the outer jacket, which can reduce the disassembly and transportation of the breaker as much as possible, making the disassembly tool simple and convenient to use, and effectively improving the disassembly efficiency.

[0019] In the above-mentioned inner and outer sleeve disassembly tool for a breaker hammer, the inner sleeve threaded clamp is provided with a second threaded hole, the force-bearing screw is threadedly connected to the inner sleeve threaded clamp through the second threaded hole, and the force-bearing surface of the force-bearing screw can abut against the piston. The setting of the thread facilitates the installation and use of the inner sleeve threaded clamp; the piston of the breaker hammer is used as the power source, and the disassembly is simple and convenient, which effectively improves the disassembly efficiency.

[0020] In the above-mentioned inner and outer jacket disassembly tool for a breaker hammer, the thread on the threaded hole one or the threaded hole two is a trapezoidal thread, and the thread on the force-bearing screw is a trapezoidal thread. The trapezoidal thread has the characteristics of high strength, high reliability, strong tensile torque resistance, good anti-loosening performance, and can withstand high pressure and high vibration loads, making the overall structure more solid and durable.

[0021] In the above-mentioned inner and outer sleeve disassembly tool for a breaker hammer, an inner sleeve mounting portion is provided on the inner wall of the front cylinder body, the inner sleeve rests on the inner sleeve mounting portion, an axially through positioning notch is opened on the inner sleeve mounting portion, and a positioning protrusion corresponding to the positioning notch is arranged around the inner sleeve threaded clamping plate, and the positioning notch and the positioning protrusion are fitted together.

[0022] The cooperation of the positioning notch and the positioning protrusion plays a role in limiting and fixing the inner sleeve threaded clamp. When the force-bearing screw and the inner sleeve threaded clamp are screwed together, the outer sleeve threaded clamp can be fixed without additional tools, which is convenient for the installation of the force-bearing screw and prevents the inner sleeve threaded clamp from loosening when the inner sleeve is disassembled, making it convenient to apply force to the force-bearing screw, which is beneficial to the conduction of force, improves the disassembly efficiency, and increases the safety of the disassembly tool; and the positioning notch and the positioning protrusion can play a certain guiding role, which is beneficial for installing the inner sleeve threaded clamp to the specified position; installing the inner sleeve threaded clamp on the upper end face of the inner sleeve is relatively close to the installation entrance, which is convenient for installation and makes the overall installation of the disassembly tool more concise.

[0023] In the above-mentioned inner and outer sleeve disassembly tool for a breaker hammer, the positioning notches are arranged symmetrically about the axis of the inner sleeve, and the positioning protrusions are also arranged accordingly, and the top of the positioning protrusion is an arc-shaped guide surface. When disassembling the inner sleeve, the inner sleeve threaded clamp can evenly apply force to the inner sleeve, which is convenient for force transmission, conducive to the disassembly of the inner sleeve, and can improve the disassembly efficiency. The arc-shaped guide surface prevents the inner sleeve threaded clamp from getting stuck during the installation process.

[0024] In the above-mentioned inner and outer casing disassembly tool for a breaker hammer, a through hole is provided at the end of the force-bearing screw rod, through which a tool such as a stick can be passed, and force is applied to the stick to rotate the force-bearing screw rod, which is more conducive to the installation and disassembly of the force-bearing screw rod and makes the disassembly tool more convenient and labor-saving to use.

[0025] The utility model provides a tool for disassembling inner and outer jackets of a breaker hammer, which has the advantages that:

[0026] First, the outer sleeve threaded clamping plate is inserted into the front cylinder body from the lower opening of the front cylinder body horizontally, and the installation depth is greatly reduced, which is easy to install and simple and convenient to operate.

[0027] Second, the outer sleeve threaded plate and the inner sleeve threaded plate are effectively fixed. When the force-bearing screw is screwed with the outer sleeve threaded plate and the inner sleeve threaded plate, no additional tools are needed. At the same time, the outer sleeve threaded plate and the inner sleeve threaded plate are not easy to deflect and are not easy to loosen with the force-bearing screw. It is conducive to applying force to the force-bearing screw, facilitating the transmission of force, so that the disassembly tool can remove the outer sleeve and the inner sleeve from the front cylinder body faster, thereby improving the disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the installation of the outer casing thread clamping plate of the inner and outer casing disassembly tool of the utility model of the breaker hammer;

[0029] Figure 2 It is a schematic diagram of the installation of the inner sleeve threaded clamping plate of the inner sleeve and outer sleeve disassembly tool of the utility model of the breaker hammer;

[0030] Figure 3 The utility model is a tool for removing the inner and outer jacket of a breaker hammer. Figure 1 Partial magnification;

[0031] Figure 4 It is a rear view of the front cylinder body described in the inner and outer sleeve removal tool of the breaker hammer of the utility model;

[0032] Figure 5 It is a rear view of the inner and outer jacket disassembly tool of the utility model of a breaker hammer;

[0033] Figure 6 It is a schematic diagram of the outer casing thread clamping plate of the inner and outer casing disassembly tool of the utility model of the breaker hammer;

[0034] Figure 7 It is the cross-sectional view CC of the inner and outer jacket disassembly tool of the breaker hammer of the utility model;

[0035] Figure 8 It is a schematic diagram of the cover plate of the inner and outer jacket disassembly tool of the breaker hammer of the utility model;

[0036] Fig. 9 The cross-sectional view DD of the inner and outer jacket disassembly tool of the breaker hammer of the utility model;

[0037] Fig.10 It is a schematic diagram of the inner sleeve threaded clamping plate of the inner and outer sleeve disassembly tool of the utility model of the breaker hammer;

[0038] Fig.11It is the cross-sectional view EE of the inner and outer sleeve disassembly tool of the breaker hammer of the utility model.

[0039] In the figure, 1. outer sleeve threaded clamp, 11. cover plate, 111. cover plate through hole, 12. fixing screw, 13. cutting edge, 14. clamp plate threaded hole, 15. fixing part, 16. recessed area, 17. threaded hole one, 2. inner sleeve threaded clamp, 21. threaded hole two, 22. positioning protrusion, 3. force-bearing screw, 31. force-bearing surface, 32. through hole, 4. front cylinder body, 41. preset gap, 42. outer sleeve, 43. inner sleeve, 44. inner sleeve mounting part, 441. positioning notch, 5. piston. DETAILED DESCRIPTION

[0040] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0041] like Figure 1 , Figure 2 and Figure 6 As shown, a tool for disassembling inner and outer jackets of a breaker hammer comprises an outer jacket threaded clamping plate 1, an inner jacket threaded clamping plate 2, a force-bearing screw 3, a cover plate 11 and a fixing screw 12. When the outer jacket threaded clamping plate 1 is installed at a preset position, a preset gap 41 is provided between the two sides of the outer jacket threaded clamping plate 1 and the inner wall of the front cylinder body 4. A cutting edge 13 is provided around the outer jacket threaded clamping plate 1. The outer jacket threaded clamping plate 1 can be fixedly connected to the cover plate 11 through the fixing screw 12. The outer jacket threaded clamping plate 1 can be threadedly connected to the force-bearing screw 3. The inner jacket threaded clamping plate 2 can be threadedly connected to the force-bearing screw 3. A through hole 32 is provided at the end of the force-bearing screw 3.

[0042] The setting of the cutting edge 13 enables the outer sleeve threaded card plate 1 to be inserted into the front cylinder body 4 horizontally, and the preset gap 41 facilitates the outer sleeve threaded card plate 1 to be turned over and installed to the specified position, which is convenient for the installation of the outer sleeve threaded card plate 1; the cover plate 11 and the fixing screw 12 can play the role of fixing the outer sleeve threaded card plate 1, and can fix the outer sleeve threaded card plate 1 on the outer sleeve 42, so as to prevent the outer sleeve threaded card plate 1 from swinging during installation and use, and facilitate the application of force to the force-bearing screw 3, which is conducive to the conduction of force, improves the disassembly efficiency, and increases the safety of the disassembly tool; the outer sleeve threaded card plate 1 and the inner sleeve threaded card plate 2 are both threadedly connected with the force-bearing screw 3, and the installation method is simple and convenient. Tools such as sticks can be used to pass through the through hole 32, and the force-bearing screw 3 can be rotated by applying force to the stick, which is more conducive to the installation and disassembly of the force-bearing screw 3, making the disassembly tool more convenient and labor-saving to use.

[0043] like Figure 1 , Figure 3 and Figures 6 to 9As shown, the cover plate 11 is provided with a cover plate through hole 111, the outer sleeve threaded clamping plate 1 is provided with a clamping plate threaded hole 14, the fixing screw 12 is fixed to the outer sleeve threaded clamping plate 1 through the clamping plate threaded hole 14, the cover plate 11 is installed on the fixing screw 12 through the cover plate through hole 111 and is fixed by the fixing member 15, the outer peripheral wall of the outer sleeve threaded clamping plate 1 is partially recessed inward to form a recessed area 16, and the recessed area 16 extends to one side of the outer sleeve threaded clamping plate 1. The end edge of the outer sleeve threaded clamping plate 1 in the extending direction of the recessed area 16 is rounded, the outer sleeve threaded clamping plate 1 is arranged on the upper end surface of the outer sleeve 42, the cutting edge 13 is arranged on both sides of the outer sleeve threaded clamping plate 1, and the distance L1 between the two cutting edges 13 is less than the inner diameter L2 of the outer sleeve 42, and the outer sleeve threaded clamping plate 1 is provided with a threaded hole 17, the force-bearing screw 3 is threadedly connected with the outer sleeve threaded clamping plate 1 through the threaded hole 17, and the force-bearing surface 31 of the force-bearing screw 3 can abut against the piston 5.

[0044] like Figure 2 , Figures 4 and 5 and Figures 10-11 As shown, a second threaded hole 21 is provided on the inner sleeve threaded clamping plate 2, and the force-bearing screw 3 is threadedly connected to the inner sleeve threaded clamping plate 2 through the second threaded hole 21. The force-bearing surface 31 of the force-bearing screw 3 can abut against the piston 5. The inner wall of the front cylinder body 4 has an inner sleeve 43 abutting against the inner sleeve mounting portion 44, and an axial through positioning notch 441 is provided on the inner sleeve mounting portion 44. A positioning protrusion 22 corresponding to the positioning notch 441 is provided on the periphery of the inner sleeve threaded clamping plate 2, and the top of the positioning protrusion 22 is an arc-shaped guide surface. The positioning notch 441 and the positioning protrusion 22 are fitted together, and the inner sleeve threaded clamping plate 2 is arranged on the upper end surface of the inner sleeve 43. Two positioning notches 441 are symmetrically arranged about the axis of the inner sleeve 43, and two positioning protrusions 22 are also correspondingly arranged.

[0045] The removal of the outer sleeve 42 and the inner sleeve 43 inside the front cylinder body is divided into two steps: the first step is to remove the outer sleeve 42 inside the lower end of the front cylinder body 4, remove the drill rod and the fixing pin of the outer sleeve 42, and insert the outer sleeve threaded clamping plate 1 into the empty space between the outer sleeve 42 and the inner sleeve 43 of the front cylinder body 4 from the lower opening of the front cylinder body 4, then turn over the outer sleeve threaded clamping plate 1 and set it on the upper end surface of the outer sleeve 42, and then install the fixing screw 12 through the clamping plate threaded hole 14 to prevent rotation, and then set the upper cover plate 11 on the lower end surface of the outer sleeve 42, so that the fixing screw 12 passes through the cover plate through hole 111 and the cover plate is fixed using the fixing member 15, the fixing member 15 is a nut, the force-bearing screw 3 is screwed with the outer sleeve threaded clamping plate 1 through the threaded hole 17, the force-bearing surface 31 of the force-bearing screw 3 pushes the piston 5, and the breaker hammer is started to make the piston 5 hit the force-bearing surface 31 to remove the outer sleeve 42 from the front cylinder body 4;

[0046] The second step is to disassemble the inner sleeve 43 in the middle of the front cylinder body 4, remove the front cylinder body 4 from the middle cylinder body, remove the fixing pin of the inner sleeve 43, put the inner sleeve threaded clamping plate 2 into the inner sleeve mounting part 44 of the front cylinder body 4 from the upper mouth of the front cylinder body 4, the positioning notch 442 cooperates with the positioning protrusion 22, the inner sleeve threaded clamping plate 2 presses against the inner sleeve 43, the force-bearing screw rod 3 is screwed with the inner sleeve threaded clamping plate 2 through the threaded hole 21, and the front cylinder body 4 is installed back on the middle cylinder body. The rotation depth of the force-bearing screw rod 3 is adjusted so that the force-bearing surface 31 of the force-bearing screw rod 3 presses against the piston 5, and the breaker hammer is started to make the piston 5 hit the force-bearing surface 31 to remove the inner sleeve 43 from the front cylinder body 4.

[0047] like Figure 1 , 2 As shown in FIGS. 7 and 11, the threads on the threaded hole 17, the threaded hole 21 and the force-bearing screw 3 are all trapezoidal threads. The trapezoidal thread has the characteristics of high strength, high reliability, strong tensile torque resistance, etc., making the overall structure more solid and durable.

[0048] The above examples are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this project to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the utility model should be included in the protection scope of the utility model.

Claims

1. A tool for removing inner and outer jackets of a breaker hammer, characterized by: The invention comprises an outer sleeve threaded clamping plate (1), an inner sleeve threaded clamping plate (2), a force-bearing screw (3), a cover plate (11) and a fixing screw (12); when the outer sleeve threaded clamping plate (1) is installed at a preset position, a preset gap (41) is provided between two sides of the outer sleeve threaded clamping plate (1) and the inner wall of the front cylinder body (4); a cutting edge (13) is provided around the outer sleeve threaded clamping plate (1); the outer sleeve threaded clamping plate (1) can be fixedly connected to the cover plate (11) via the fixing screw (12); the outer sleeve threaded clamping plate (1) can be threadedly connected to the force-bearing screw (3); and the inner sleeve threaded clamping plate (2) can be threadedly connected to the force-bearing screw (3).

2. The inner and outer casing removal tool for a breaker hammer according to claim 1, characterized in that: The cover plate (11) is provided with a cover plate through hole (111), the outer sleeve threaded clamping plate (1) is provided with a clamping plate threaded hole (14), the fixing screw (12) is fixed to the outer sleeve threaded clamping plate (1) through the clamping plate threaded hole (14), and the cover plate (11) is mounted on the fixing screw (12) through the cover plate through hole (111) and fixed by a fixing member (15).

3. The inner and outer sleeve removal tool for a breaker hammer according to claim 2, characterized in that: The outer peripheral wall of the outer sleeve thread clamping plate (1) is partially recessed inwards to form a recessed area (16), and the recessed area (16) extends to one side of the outer sleeve thread clamping plate (1).

4. The inner and outer sleeve removal tool for a breaker hammer according to claim 3, characterized in that: The end edge of the outer sleeve threaded clamping plate (1) in the extending direction of the recessed area (16) is rounded.

5. The inner and outer sleeve removal tool for a breaker hammer according to claim 4, characterized in that: The cutting edges (13) are arranged on both sides of the outer sleeve threaded clamping plate (1), and the distance L1 between the two cutting edges (13) is smaller than the inner diameter L2 of the outer sleeve (42). The outer sleeve threaded clamping plate (1) is provided with a threaded hole 1 (17), and the force-bearing screw rod (3) is threadedly connected to the outer sleeve threaded clamping plate (1) through the threaded hole 1 (17), and the force-bearing surface (31) of the force-bearing screw rod (3) can abut against the piston (5).

6. The inner and outer sleeve removal tool for a breaker hammer according to claim 5, characterized in that: The thread on the threaded hole 1 (17) is a trapezoidal thread, and the thread on the force-bearing screw rod (3) is a trapezoidal thread.

7. The inner and outer casing removal tool for a breaker hammer according to claim 1, characterized in that: The inner sleeve threaded clamping plate (2) is provided with a second threaded hole (21), and the force-bearing screw rod (3) is threadedly connected to the inner sleeve threaded clamping plate (2) via the second threaded hole (21), and the force-bearing surface (31) of the force-bearing screw rod (3) can abut against the piston (5).

8. The inner and outer sleeve removal tool for a breaker hammer according to claim 7, characterized in that: The thread on the second threaded hole (21) is a trapezoidal thread, and the thread on the force-bearing screw rod (3) is a trapezoidal thread.

9. The inner and outer casing removal tool for a breaker hammer according to claim 7, characterized in that: The inner wall of the front cylinder body (4) is provided with an inner sleeve mounting portion (44), the inner sleeve (43) abuts against the inner sleeve mounting portion (44), an axially penetrating positioning notch (441) is provided on the inner sleeve mounting portion (44), and a positioning protrusion (22) corresponding to the positioning notch (441) is provided on the periphery of the inner sleeve threaded clamping plate (2), and the positioning notch (441) and the positioning protrusion (22) are fitted and installed.

10. The inner and outer casing removal tool for a breaker hammer according to claim 9, characterized in that: A plurality of positioning notches (441) are symmetrically arranged about the axis of the inner sleeve (43), and a plurality of positioning protrusions (22) are correspondingly arranged. The top of the positioning protrusion (22) is an arc-shaped guide surface.

11. The inner and outer sleeve removal tool for a breaker hammer as claimed in claim 1 or 2 or 3 or 4 or 5 or 7 or 9 or 10, characterized in that: A through hole (32) is provided at the end of the force-bearing screw rod (3).

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