Maintenance tool

Abstract

The utility model relates to the technical field of mechanical equipment maintenance, in particular to a maintenance tool which comprises a supporting piece, an impact block and a connecting block, the connecting block is located at one end of the supporting piece and used for being connected with a positioning sleeve, and the impact block is arranged on the supporting piece and used for receiving impact force applied externally so as to drive the positioning sleeve to move through the connecting block. The positioning sleeve dismounting device can be suitable for dismounting of various different positioning sleeves, the convenience of dismounting of the positioning sleeve can be improved, and the dismounting of the positioning sleeve is more time-saving and labor-saving.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment maintenance, and in particular to a maintenance tool. Background Art

[0002] At present, the rock drilling and blasting method is mostly used in mining, tunneling and underground rock excavation projects. The hydraulic rotary impactor has become the leading product in rock drilling and blasting projects with its advantages of high efficiency, low cost, cleanliness and safety. The performance of the impact mechanism of the impactor is crucial to the work of the impactor. The impact mechanism of the impactor generally has a bearing locating sleeve installed by interference fit, which is difficult to disassemble.

[0003] At present, there are several methods for disassembling and assembling positioning sleeves, including destructive disassembly, heating disassembly and mechanical disassembly, among which mechanical disassembly is the most commonly used one. Specifically, mechanical disassembly is generally used for the assembly of inner and outer bushings with very small gaps or large weights. Some inner and outer bushings with very small interference, only 0.01-0.02mm, and special materials that cannot be heated are also disassembled and assembled by mechanical disassembly. Among them, mechanical disassembly is mainly carried out by a press. When operating by a press, the press needs to be transported to the equipment site.

[0004] However, due to the large size of the entire press equipment, the site where the impactor is used is generally not convenient for transportation, which makes it time-consuming and labor-intensive to remove the positioning sleeve of the impactor through the press. At the same time, the press also has certain requirements for the size of the product, making it difficult for the press to be used for all impactors and having poor applicability. Utility Model Content

[0005] The present application provides a maintenance tool to solve the problem that removing a positioning sleeve by a press machine is time-consuming, labor-intensive, and has poor applicability.

[0006] In order to solve the above problems, this application adopts the following technical solutions:

[0007] A maintenance tool is used for removing a positioning sleeve, comprising a support member, an impact block and a connecting block. The connecting block is located at one end of the support member and is used to connect with the positioning sleeve. The impact block is arranged on the support member. The impact block is used to receive an impact force applied from the outside to drive the positioning sleeve to move through the connecting block.

[0008] In some possible designs, the support member includes a connecting rod and a first limit block, the impact block is slidably connected to the connecting rod, the first limit block is located at one end of the connecting rod and is used to limit the position of the impact block, and the connecting block is located at one end of the connecting rod away from the first limit block.

[0009] In some possible designs, a first through hole is provided in the middle of the impact block, the connecting rod is inserted into the first through hole, and the inner diameter of the first through hole is greater than the outer diameter of the connecting rod.

[0010] In some possible designs, the support member also includes a second limit block, which is located between the connecting block and the impact block, and the second limit block is used to cooperate with the first limit block to limit the axial movement distance of the impact block in the connecting rod.

[0011] In some possible designs, at least a portion of the connecting rod is provided with external threads, and the second limiting block is threadedly connected to the connecting rod.

[0012] In some possible designs, a cross-sectional dimension of the impact block is larger than a cross-sectional dimension of the second limiting block.

[0013] In some possible designs, the support member further includes a handle disposed on the connecting rod, and the handle is located on a side of the first limiting block away from the second limiting block.

[0014] In some possible designs, the first limiting block and the handle are welded to the connecting rod.

[0015] In some possible designs, the impact block is a cylindrical block.

[0016] In some possible designs, the connecting block is detachably connected to the supporting member.

[0017] In some possible designs, the positioning sleeve is provided with a second through hole, an annular protrusion is provided in the second through hole, and the annular protrusion is provided with at least two positioning grooves penetrating the annular protrusion;

[0018] The connecting block includes a cylinder and at least two positioning protrusions arranged on the cylinder, the outer diameter of the cylinder is less than or equal to the inner diameter of the annular protrusion, the positioning protrusion is adapted to the positioning groove, and the positioning protrusion is used to overlap the end of the annular protrusion away from the impact block after entering the second through hole, so as to pull the positioning sleeve to move when the impact block is subjected to external force.

[0019] Beneficial effects of this application:

[0020] The present application provides a maintenance tool, which realizes the removal of the positioning sleeve by arranging a support member, an impact block and a connecting block, wherein the impact block is located at one end of the support member, and is used to connect with the positioning sleeve to be removed, and the impact block is located on the support member. When removing the positioning sleeve, an impact force is applied to the impact block to move the impact block, thereby driving the support member and the connecting block to move accordingly. The connecting block is connected to the positioning sleeve, and the positioning sleeve can be driven to move through the connecting block, thereby completing the removal of the positioning sleeve. The structure of the entire maintenance tool is simple. Compared with a press, it is not only extremely light in weight, but also relatively small in size. It is less difficult to transport it to the equipment site, which can effectively improve the convenience of removing the positioning sleeve, making the removal of the positioning sleeve more time-saving and labor-saving. At the same time, the maintenance tool can meet the needs of various product sizes, and its scope of application is wider than that of a press. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of the bearing positioning sleeve of an existing impactor;

[0023] Figure 2 A schematic diagram of the structure of the maintenance tool provided in the embodiment of the present application;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of the support member;

[0025] Figure 4 for Figure 2 A schematic diagram of the structure of the connection block in FIG.

[0026] Figure 5 It is a schematic diagram of the front structure of the positioning sleeve;

[0027] Figure 6 It is a schematic diagram of the back structure of the positioning sleeve;

[0028] Figure 7 for Figure 2 A structural diagram of the initial state of the maintenance tool in FIG.

[0029] Figure 8 for Figure 2 A structural diagram of the working status of the maintenance tooling;

[0030] Fig. 9 for Figure 2A structural schematic diagram of another angle of the working state of the maintenance tooling;

[0031] Fig.10 for Fig. 9 A partial enlarged view of the maintenance tooling.

[0032] Description of reference numerals:

[0033] 11-positioning sleeve; 111-positioning groove; 112-annular protrusion;

[0034] 12-motor transmission shaft;

[0035] 13- Sealing;

[0036] 14- bearing;

[0037] 15- Gear;

[0038] 16- stop sleeve;

[0039] 21-connecting block; 211-positioning protrusion; 212-cylinder;

[0040] 22- second limit block;

[0041] 23- Impact block;

[0042] 24-support member; 241-connecting rod; 2411-external thread; 242-first limit block; 243-handle.

[0043] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0045] Secondly, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0046] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0047] At present, the positioning sleeve is generally installed by interference fit, which is difficult to disassemble. The following is an example of an impactor:

[0048] like Figure 1 As shown, the bearing locating sleeve part of the impactor mainly includes a locating sleeve 11, a motor transmission shaft 12, a seal 13, a bearing 14, a gear 15, a stop sleeve 16 and a gear box housing.

[0049] The motor transmission shaft 12 passes through the positioning sleeve 11 and the stop sleeve 16, and is rotatably connected to the positioning sleeve 11 and the stop sleeve 16. The motor transmission shaft 12 is splined with the gear 15, so that the motor transmission shaft 12 can drive the gear 15 to rotate under the drive of the motor, providing a power source for the impactor. One end face of the gear 15 is axially positioned with the end face of the stop sleeve 16, and the other end face of the gear 15 is gap-positioned with one end of the bearing 14, and the other end of the bearing 14 is axially positioned with the positioning sleeve 11.

[0050] In order to ensure a clean working environment for the gear grease, the outer cylindrical surface of the locating sleeve 11 and the gear box housing are interference fit, the inner cylindrical surface of the locating sleeve 11 and the outer cylindrical surface of the motor drive shaft 12 are clearance fit, and are sealed by the seal 13, thereby ensuring that the gear can run smoothly and preventing oil, gas, water, etc. from entering the interior to prevent them from destroying the working environment of the grease and avoiding gear jamming.

[0051] That is, the locating sleeve is connected to the gear box housing by interference fit. Although it is beneficial to ensure a clean working environment for the gear lubricant, it will also make it difficult to remove the locating sleeve, requiring the use of a special press to complete the removal.

[0052] The press has a certain size and weight, which means that it is often time-consuming and labor-intensive to transport the press to the construction site of the impactor. At the same time, the press also has certain requirements for product size, and its scope of application is relatively narrow.

[0053] In order to avoid the above-mentioned problems, the present application provides a maintenance tool, which can effectively solve the problem that the positioning sleeve is difficult to maintain and disassemble due to interference fit. At the same time, the maintenance tool has a simple structure, light weight, easy to move and use, and can be used for the disassembly of positioning sleeves of various specifications, and has a wide range of applications.

[0054] The present application is described in detail below with reference to the accompanying drawings and specific embodiments:

[0055] Figure 2 A schematic diagram of the structure of the maintenance tool provided in the embodiment of the present application; Figure 3 for Figure 2 A schematic diagram of the structure of the support member; Figure 4 for Figure 2 A schematic diagram of the structure of the connection block in FIG. Figure 5 It is a schematic diagram of the front structure of the positioning sleeve; Figure 6 It is a schematic diagram of the back structure of the positioning sleeve; Figure 7 for Figure 2 A structural diagram of the initial state of the maintenance tool in FIG. Figure 8 for Figure 2 A structural diagram of the working status of the maintenance tooling; Fig. 9 for Figure 2 A structural schematic diagram of another angle of the working state of the maintenance tooling; Fig.10 for Fig. 9 A partial enlarged view of the maintenance tooling.

[0056] As shown in the accompanying drawings, this embodiment provides a maintenance tool, including a support member 24 , an impact block 23 and a connecting block 21 .

[0057] The connection block 21 is located at one end of the support member 24, and is used to connect with the positioning sleeve 11 to be removed, so that the positioning sleeve 11 can move with the connection block 21. It can be understood that the positioning sleeve 11 here is just a synonym for the same part, which can be a bushing or other fastener under the same working condition, and this embodiment does not limit it here. The impact block 23 is set on the support member 24, and it can be located at any position of the support member 24. The impact block 23 is used to receive the impact force applied from the outside. After receiving the impact force applied from the outside, the impact block 23 can cause the support member 24 to pull the connection block 21 and the positioning sleeve 11 to move synchronously under the action of the impact force, thereby realizing the removal of the positioning sleeve 11.

[0058] It is understandable that the impact block 23 can be made of any high-strength hard material as long as it can withstand a large impact force and is not easily deformed, and this embodiment does not limit it.

[0059] The impact force applied to the impact block 23 can be provided by manual pushing or by mechanical equipment, such as hammering, as long as sufficient impact force is provided so that the maintenance tool can smoothly pull out the positioning sleeve 11.

[0060] When it is necessary to remove the positioning sleeve 11, connect the connecting block 21 to the positioning sleeve 11, and then apply an impact force to the impact block 23. The direction of the impact force is consistent with the direction of pulling out the positioning sleeve 11. In this way, the positioning sleeve 11 can be pulled out with the help of the impact force applied to the impact block 23, thereby realizing the removal of the positioning sleeve 11.

[0061] This makes the maintenance tool not only simple in structure and easy to install and disassemble, but also smaller in size and easy to carry. It can also be used for the removal of various fasteners in similar working conditions such as impactors and rock drills, and has a wide range of applications.

[0062] In some possible embodiments, the support member 24 includes a connecting rod 241 and a first limit block 242. The impact block 23 is slidably connected to the connecting rod 241 and can move along the axial direction of the connecting rod 241. The first limit block 242 is located at one end of the connecting rod 241 and is used to limit the position of the impact block 23 to prevent the impact block 23 from leaving the first connecting rod 241, that is, the outer diameter of the first limit block 242 is larger than the inner diameter of the impact block 23. The connecting block 21 is located at one end of the connecting rod 241 away from the first limit block 242. While the connecting block 21 is connected to the positioning sleeve 11, it can also prevent the impact block 23 from being separated from the connecting rod 241 from this end.

[0063] It is understandable that the first limit block 242 can be kept at the current position during the use of the maintenance tool to limit the position of the impact block 23 and provide a reverse thrust so that the connecting block 21 can pull the positioning sleeve 11 to move.

[0064] The connecting rod 241 has a certain length so that the impact block 23 has sufficient space to move. Of course, the length of the connecting rod 241 can be designed according to actual conditions, and this embodiment does not limit it.

[0065] Specifically, the first limit block 242 and the connecting rod 241 can be fixedly connected, such as by welding or direct integral molding, or can be detachably connected, such as by bolt connection or clamping, etc., as long as the first limit block 242 can bear the impact force of the impact block 23 without relative displacement with the connecting rod 241.

[0066] Such a configuration enables the impact block 23 to rush toward the first limit block 242 at a certain acceleration, thereby effectively improving the impact effect of the impact block 23 .

[0067] In some possible embodiments, a first through hole is provided in the middle of the impact block 23, and the connecting rod 241 is inserted into the first through hole, and the inner diameter of the first through hole is larger than the outer diameter of the connecting rod 241, so as to reduce the friction between the connecting rod 241 and the impact block 23, and facilitate the reciprocating movement of the impact block 23 along the connecting rod 241.

[0068] In some possible embodiments, the support member 24 also includes a second limit block 22, which is located between the connecting block 21 and the impact block 23, and the second limit block 22 is used to cooperate with the first limit block 242 to limit the axial movement distance of the impact block 23 in the connecting rod 241, so that the impact block 23 can only move between the first limit block 242 and the second limit block 22.

[0069] In some use environments, it may be necessary to apply a large impact force to achieve the removal of the positioning sleeve 11. At this time, the impact block 23 may perform a reverse impact under a large recoil force, and it is easy to collide with the positioning sleeve 11 or the end of the workpiece installed with the positioning sleeve 11. In this example, a second limit block 22 is provided on the connecting rod 241, and the second limit block 22 is located between the impact block 23 and the connecting block 21, so that the moving distance of the impact block 23 in this direction can be limited by the second limit block 22, so as to prevent the impact block 23 from colliding with the positioning sleeve 11 or the end of the workpiece installed with the positioning sleeve 11 under the action of the recoil force, thereby playing a better protective role.

[0070] The installation environment and size of the positioning sleeve 11 to be removed may be different. In order to adapt to the use requirements of different positioning sleeves 11 to be removed, at least a partial area of ​​the connecting rod 241 can be provided with an external thread 2411, and the second limit block 22 is connected to the connecting rod 241 through the external thread 2411. That is, when it is necessary to adjust the distance between the connecting block 21 and the second limit block 22, the second limit block 22 can be directly screwed to move it in the area where the external thread 2411 is provided.

[0071] Among them, the length of the external thread 2411 set on the connecting rod 241 can be selected according to actual needs. It can be a small section close to the connecting block 21, or the entire connecting rod 241 can be set as a screw rod. As long as it can meet the use requirements, this embodiment does not limit it here.

[0072] It is understandable that the second limiting block 22 can be of any shape as long as it can be threadedly connected to the connecting rod 241, and this embodiment does not limit it.

[0073] For example, the second stop block 22 may be a common nut, so there is no need to process the second stop block 22 separately, and the assembly can be performed directly after the other parts are processed.

[0074] When the impact force is applied to the impact block 23, it is mainly applied from the side of the impact block 23 close to the second limit block 22. Therefore, the cross-sectional size of the impact block 23 can be made larger than the cross-sectional size of the second limit block 22, so that the impact block 23 has an exposed portion relative to the second limit block 22, so as to facilitate the application of impact force to the impact block 23 and improve the convenience of use.

[0075] In addition, the impact block 23 may be cylindrical so that the impact block 23 has no sharp edges and corners, thereby improving the safety of use.

[0076] In some possible implementations, the support member 24 further includes a handle 243 disposed on the connecting rod 241, and the handle 243 is located on the side of the first limit block 242 away from the second limit block 22. When removing the positioning sleeve 11, the handle 243 can provide a fulcrum for the staff to hold the maintenance tool.

[0077] It is understandable that the handle 243 can be in any shape as long as it is convenient for the staff to hold it.

[0078] Exemplarily, the side surface of the handle 243 can be configured as a curved surface that fits the human hand to adapt to the normal curvature of the human hand and facilitate the staff to hold it.

[0079] Furthermore, the first limiting block 242 and the handle 243 may be connected to the connecting rod 241 by welding.

[0080] It is understandable that the first limit block 242, the handle 243 and the connecting rod 241 may be connected in other ways, as long as the first limit block 242, the handle 243 and the connecting rod 241 do not undergo relative displacement during use.

[0081] The connecting block 21 and the supporting member 24 can be connected in a detachable manner, such as by snap-fitting or bolting, which is not limited in this embodiment. Such a setting is convenient for replacing connecting blocks 21 of different specifications to meet different usage requirements, and is also convenient for disassembling the second limit block 22 for maintenance.

[0082] In some possible implementations, the impact block 23 is a cylindrical block.

[0083] In some possible embodiments, a second through hole is provided on the positioning sleeve 11, and an annular protrusion 112 is provided in the second through hole, that is, the annular protrusion 112 extends toward the central axis of the positioning sleeve 11, and at least two positioning grooves 111 passing through the annular protrusion 112 are provided on the annular protrusion 112, that is, the annular protrusion 112 is separated by the positioning grooves 111 to form at least two arc-shaped protrusions.

[0084] The connecting block 21 includes a cylinder 212 and at least two positioning protrusions 211 arranged on the cylinder 212. The outer diameter of the cylinder 212 is less than or equal to the inner diameter of the annular protrusion 112, so that the cylinder 212 can smoothly enter and exit the first through hole and can rotate freely relative to the first through hole. The positioning protrusion 211 is adapted to the positioning groove 111, that is, when the connecting block 21 is inserted into the first through hole, the positioning protrusion 211 can be inserted into the positioning groove 111 and move along the positioning groove 111, and the positioning protrusion 211 is used to overlap the end of the annular protrusion 112 away from the impact block 23 after entering the second through hole, so as to pull the positioning sleeve 11 to move when the impact block 23 is subjected to external force.

[0085] It is understandable that the length of the annular protrusion 112 is generally slightly shorter than the depth of the first through hole, so that the positioning protrusion 211 can be engaged with the annular protrusion 112, and after the positioning protrusion 211 overlaps the annular protrusion 112, it will not extend outside the positioning sleeve 11 to avoid collision with other parts and scratching the edge of the positioning sleeve 11.

[0086] In addition, the number and setting positions of the positioning grooves 111 can also be selected according to actual conditions. As long as it can be ensured that the corresponding positioning protrusions 211 can smoothly pull the positioning sleeve 11 to move under the action of impact force after overlapping the end of the annular protrusion 112, the positioning sleeve 11 can be disassembled. This embodiment does not limit it here.

[0087] Exemplarily, two positioning grooves 111 may be arranged opposite to each other, and two positioning protrusions 211 may be arranged correspondingly.

[0088] Specifically, when the positioning sleeve 11 needs to be disassembled, Figure 7 As shown, the positioning protrusion 211 is aligned with the positioning groove 111, and the connecting block 21 is inserted into the second through hole. After the positioning protrusion 211 completely passes through the positioning groove 111, the connecting block 21 is rotated. Figure 8 As shown, the positioning protrusion 211 is staggered with the positioning groove 111, so that the positioning protrusion 211 overlaps the annular protrusion 112, and the connection between the connecting block 21 and the positioning sleeve 11 is completed. At this time, it is only necessary to apply an impact force to the impact block 23 to pull the positioning sleeve 11 to move through the connecting block 21. After the positioning sleeve 11 is disassembled, the connecting block 21 is rotated again to make the positioning protrusion 211 face the positioning groove 111, and the connecting block 21 can be pulled to separate the connecting block 21 from the positioning sleeve 11.

[0089] Such an arrangement enables the positioning sleeve 11 and the connecting block 21 to be directly connected by rotational positioning, without the need to add other positioning parts to assist in the connection, making the use of the maintenance tool more convenient.

[0090] For ease of understanding, the following further describes the method of using the maintenance tooling of this application:

[0091] 1. Align the positioning protrusion 211 with the positioning groove 111 of the positioning sleeve 11 to be removed, and insert the cylinder 212 into the second through hole;

[0092] 2. After the end of the positioning protrusion 211 close to the second limiting block 22 is flush with the end of the annular protrusion 112 away from the second limiting block 22, or the two are opposite and there is a certain distance between them, hold the handle 243 to rotate the connecting rod 241, so that the positioning protrusion 211 and the positioning groove 111 form a certain angle, that is, the positions of the two are staggered;

[0093] 3. Hold the handle 243, move the impact block 23, push the impact block 23 in the direction of pulling out the positioning sleeve 11 with a certain force, or hammer the impact block 23 close to one end of the second limit block 22, so that it moves along the axial direction of the connecting rod 241 and hits the first limit block 242, giving the maintenance tool such as Fig. 9 The impact force in the direction shown is used to pull the positioning sleeve 11 to move, thereby realizing the removal of the positioning sleeve 11.

[0094] To sum up, the maintenance tool of the present application has a simple structure, and the disassembly of the positioning sleeve 11 can be completed with only a few parts. The processing requirements of these parts are not high, the volume is not large, the production difficulty is low, and the cost is not high. At the same time, the connecting block 21 and the positioning sleeve 11 are connected by a rotational positioning method, which is relatively simple to use. In addition, it can be used for the disassembly, maintenance, etc. of fasteners under different working conditions, and has a wide range of applications.

[0095] Those skilled in the art will easily conceive of other implementations of the present application after considering the specification and practicing the technical solutions disclosed herein.

[0096] This application is intended to cover any modifications, uses or adaptive changes of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the technical field that are not disclosed in this application.

[0097] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A maintenance tool for removing a positioning sleeve (11), characterized in that: The invention comprises a support member (24), an impact block (23) and a connection block (21); the connection block (21) is located at one end of the support member (24) and is used to be connected to the positioning sleeve (11); the impact block (23) is arranged on the support member (24); the impact block (23) is used to receive an impact force applied from the outside, so as to drive the positioning sleeve (11) to move through the connection block (21).

2. The maintenance tool according to claim 1, characterized in that: The support member (24) comprises a connecting rod (241) and a first limiting block (242); the impact block (23) is slidably connected to the connecting rod (241); the first limiting block (242) is located at one end of the connecting rod (241) and is used to limit the position of the impact block (23); and the connecting block (21) is located at one end of the connecting rod (241) away from the first limiting block (242).

3. The maintenance tool according to claim 2, characterized in that: A first through hole is provided in the middle of the impact block (23), the connecting rod (241) is inserted into the first through hole, and the inner diameter of the first through hole is greater than the outer diameter of the connecting rod (241).

4. The maintenance tool according to claim 2, characterized in that: The support member (24) further comprises a second limit block (22), wherein the second limit block (22) is located between the connecting block (21) and the impact block (23), and the second limit block (22) is used to cooperate with the first limit block (242) to limit the axial movement distance of the impact block (23) on the connecting rod (241).

5. The maintenance tool according to claim 4, characterized in that: At least a portion of the connecting rod (241) is provided with an external thread (2411), and the second limiting block (22) is threadedly connected to the connecting rod (241).

6. The maintenance tool according to claim 5, characterized in that: The cross-sectional dimension of the impact block (23) is greater than the cross-sectional dimension of the second limiting block (22).

7. The maintenance tool according to claim 5, characterized in that: The support member (24) further comprises a handle (243) arranged on the connecting rod (241), and the handle (243) is located on a side of the first limiting block (242) away from the second limiting block (22).

8. The maintenance tool according to claim 7, characterized in that: The first limiting block (242) and the handle (243) are both welded to the connecting rod (241).

9. The maintenance tool according to any one of claims 1 to 8, characterized in that: The impact block (23) is a cylindrical block.

10. The maintenance tool according to any one of claims 1 to 8, characterized in that: The positioning sleeve (11) is provided with a second through hole, an annular protrusion (112) is provided in the second through hole, and the annular protrusion (112) is provided with at least two positioning grooves (111) penetrating the annular protrusion (112); The connecting block (21) comprises a cylinder (212) and at least two positioning protrusions (211) arranged on the cylinder (212); the outer diameter of the cylinder (212) is less than or equal to the inner diameter of the annular protrusion (112); the positioning protrusion (211) is adapted to the positioning groove (111); the positioning protrusion (211) is used to overlap the end of the annular protrusion (112) away from the impact block (23) after entering the second through hole, so as to pull the positioning sleeve (11) to move when the impact block (23) is subjected to external force.

Images