Disassembling device

Abstract

The utility model provides a disassembling device. The disassembling device comprises a supporting assembly, a fixing assembly and an adjusting piece. The first end of the supporting assembly is detachably assembled on the fixing assembly, and the second end of the supporting assembly is used for being connected to the gear end face of a shaft tooth assembly in a clamped mode. The adjusting piece is arranged in the fixing assembly in a penetrating mode, connected with the center shaft of the shaft tooth assembly and used for driving the center shaft of the shaft tooth assembly and the gear to move relatively. The disassembling device disclosed by the utility model is simple in structure, low in cost and convenient to operate; during disassembly, the product to be disassembled does not need to be taken out from the box body or the shell, and only the supporting assembly needs to be put in, so that the use is convenient; and the universality is high, and interference to-be-disassembled parts of different structures can be adapted by simply modifying the size of the disassembling device in the embodiment.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembling devices, in particular to a disassembling device. Background Art

[0002] During the assembly process of the gear assembly with different speed ratios in the reduction box of the car, there is interference fit. Due to the limited space for the arrangement of some shaft systems and surrounding parts, the gear assembly cannot be disassembled in the box. However, during the production and maintenance of automobile transmissions, all-in-one electric drives or hybrid transmissions, the gear assembly with interference fit needs to be disassembled for replacement.

[0003] At present, the industry often uses simple pullers, presses, heating equipment and other disassembly devices for disassembly, which have the advantage of high efficiency. However, these disassembly devices are complex in structure, high in cost, large in size, and there is a risk of damaging the shaft teeth during the disassembly process. Utility Model Content

[0004] The utility model provides a disassembling device to solve the problems of complex structure, high cost and poor applicability of the existing disassembling device.

[0005] A disassembly device comprises a supporting assembly, a fixing assembly and an adjusting piece; the first end of the supporting assembly is detachably mounted on the fixing assembly, and the second end of the supporting assembly is used to be clamped on the gear end face of a shaft-tooth assembly; the adjusting piece is passed through the fixing assembly and connected to the central axis of the shaft-tooth assembly, so as to drive the central axis of the shaft-tooth assembly and the gear to move relative to each other.

[0006] Preferably, the support assembly comprises at least two support arms; the first ends of the support arms are detachably mounted on the fixing assembly, and the second ends of at least two of the support arms are clamped on the gear end face of the shaft-tooth assembly in an annular manner.

[0007] Preferably, the support arm includes a main arm arranged along the axial direction of the shaft-tooth assembly, a limiting portion extending from the first end of the main arm along the radial direction of the shaft-tooth assembly, and a clamping portion extending inward from the second end of the main arm along the radial direction of the shaft-tooth assembly; the main arm is inserted into the fixing assembly, the limiting portion is detachably mounted on the fixing assembly, and the clamping portion is clamped on the gear end face of the shaft-tooth assembly.

[0008] Preferably, the clamping portion includes a first body and a second body extending inwardly from one side of the first body along the radial direction of the shaft gear assembly; the distance between the second body and the fixing assembly is smaller than the distance between the first body and the fixing assembly.

[0009] Preferably, the fixing assembly comprises a support plate and a limit member, wherein the limit member is arranged on a side of the support plate away from the shaft-tooth assembly; the first end of the support assembly passes through the support plate and is detachably assembled in the limit member.

[0010] Preferably, the support plate is provided with a mounting groove and an adjustment hole, and the adjustment hole is located on the inner side of the mounting groove; the first end of the support assembly is inserted into the mounting groove, and the adjustment member is installed in the adjustment hole.

[0011] Preferably, the support plate comprises a support body and two support end portions extending in opposite directions from opposite sides of the support body along the radial direction of the shaft gear assembly; each of the support end portions is provided with a mounting groove, and the support body is provided with the adjustment hole.

[0012] Preferably, the mounting groove is a step groove.

[0013] Preferably, a limiting groove and an avoidance hole are provided on the limiting member; the avoidance hole is located on the inner side of the limiting groove; the first end of the supporting assembly is detachably assembled in the limiting groove, and the adjusting member is inserted into the avoidance hole.

[0014] Preferably, the adjusting member includes a threaded rod, a positioning portion extending from a first end of the threaded rod along the axial direction of the threaded rod, and a connecting portion extending from a second end of the threaded rod along the axial direction of the threaded rod; the threaded rod is inserted into the fixing assembly, the positioning portion is used to connect with the central axis of the shaft-tooth assembly, and the connecting portion is used to cooperate with a tightening tool.

[0015] The disassembly device provided by the embodiment of the utility model includes a supporting assembly, a fixing assembly and an adjusting piece; when in use, the first end of the supporting assembly is first detachably assembled on the fixing assembly, and the supporting assembly can move inside the fixing assembly, and then the second end of the supporting assembly is clamped on the gear end face of the shaft-tooth assembly; finally, the adjusting piece is inserted into the fixing assembly and connected to the central axis of the shaft-tooth assembly, and the adjusting piece is rotated, and the adjusting piece moves along the axial direction of the shaft-tooth assembly, which can drive the central axis of the shaft-tooth assembly and the gear to move relative to each other, so as to drive the supporting assembly to lift the gear of the shaft-tooth assembly, thereby improving the disassembly efficiency.

[0016] The disassembly device in this example has a simple structure, low cost, and easy operation, and is often used in the assembly of transmissions or electric drive systems in automobiles. When disassembling, the product to be disassembled does not need to be taken out of the box or shell, and it only needs to ensure that the supporting components can be put in, which is easy to use. It can be used for both spline interference and inner and outer diameter sleeve interference parts to be disassembled, and has a wide range of applicable scenarios. It has strong versatility, and for interference parts to be disassembled with different structures, the size of the disassembly device in this example can be simply modified to adapt to the application. The portable design makes it more convenient to use and is suitable for different scenarios, such as defective product repair, sample trial production, and other limited conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is an isometric view of a disassembly device in one embodiment of the utility model;

[0019] Figure 2 is a cross-sectional view of a disassembly device in one embodiment of the utility model;

[0020] Figure 3 This is an isometric view of a disassembly device in one embodiment of the utility model when in use;

[0021] Figure 4 It is a cross-sectional view of a disassembling device in one embodiment of the utility model when in use.

[0022] in,

[0023] 1. Support assembly; 11. Support arm; 111. Main body arm; 112. Limiting portion; 113. Clamping portion; 1131. First main body; 1132. Second main body;

[0024] 2. Fixing assembly; 21. Support plate; 211. Mounting slot; 212. Adjustment hole; 22. Limiting member; 221. Limiting slot; 222. Avoidance hole;

[0025] 3. Adjusting part; 31. Threaded rod; 32. Positioning part; 33. Connecting part. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The utility model embodiment provides a disassembly device, referring to Figure 1-4 The disassembly device includes a supporting component 1, a fixing component 2 and an adjusting member 3; the first end of the supporting component 1 is detachably assembled on the fixing component 2, and the second end of the supporting component 1 is used to be clamped on the gear end face of the shaft-tooth component; the adjusting member 3 is penetrated in the fixing component 2 and connected to the central axis of the shaft-tooth component, and is used to drive the central axis of the shaft-tooth component and the gear to move relative to each other.

[0030] Among them, the shaft-gear assembly is the object that needs to be disassembled, which specifically includes the center shaft and the gear sleeved outside the center shaft. During the assembly process, the gear and the center shaft have an interference fit.

[0031] As an example, the disassembly device includes a support component 1, a fixed component 2 and an adjustment member 3; when in use, the first end of the support component 1 is first detachably assembled on the fixed component 2, and the support component 1 can move in the fixed component 2, and then the second end of the support component 1 is clamped on the gear end face of the shaft gear component; finally, the adjustment member 3 is inserted into the fixed component 2 and connected to the central axis of the shaft gear component, and the adjustment member 3 is rotated, and the adjustment member 3 moves along the axial direction of the shaft gear component, which can drive the central axis of the shaft gear component and the gear to move relative to each other, so as to drive the support component 1 to lift the gear of the shaft gear component and improve the disassembly efficiency. The relative movement of the central axis and the gear of the shaft gear component includes two situations. The first situation is: the fixed component 2 remains stationary, the support component 1 clamps the gear end face of the shaft gear component and does not move, and the adjustment member 3 pushes the central axis of the shaft gear component to move downward, so that the central axis of the shaft gear component moves downward relative to the gear of the shaft gear component, and the gear of the shaft gear component is separated from the central axis. The second situation is: the central axis of the shaft-tooth assembly is stationary, the end of the adjustment member 3 abuts against the central axis of the shaft-tooth assembly, and the fixing member 2 moves upward relative to the adjustment member 3 to drive the supporting member 1 to move upward, thereby driving the gear of the shaft-tooth assembly to move upward, so that the gear of the shaft-tooth assembly moves upward relative to the central axis of the shaft-tooth assembly, thereby realizing the separation of the gear of the shaft-tooth assembly from the central axis.

[0032] Take the disassembly of a common interference fit gear as an example. Figure 3 and Figure 4 , the gear and the center shaft are in an interference fit relationship, the figure shows spline interference, and there are also inner and outer diameter interference fit press fitting. The general process sequence is to first remove the shaft gear assembly from the box body, and then disassemble it by heating or press plate. The disassembly device of this example is used in the following order: insert the second end of the support assembly 1 into one side of the gear end face by using the gap between the gear and the matching surface, and clamp the gear end face; insert the first end of the support assembly 1 into the fixed assembly 2 to fix the support assembly 1; hold the fixed assembly 2 by hand, insert the adjustment member 3 into the fixed assembly 2, and slowly screw it in until the lower end of the adjustment member 3 fits with the end face of the center shaft; observe to ensure that there is a gap between the support assembly 1 and the gear tooth top, and connect with the gear end face, slowly tighten the adjustment member 3 until the gear is completely separated from the center shaft system spline, loosen the adjustment member 3, first remove the gear, and then remove the fixed assembly 2 and the support assembly 1. Among them, the adjustment member 3 can be screwed on the fixed assembly 2 in advance, but a certain stroke should be reserved to prevent the adjustment member 3 from failing to position the center shaft end face of the shaft gear assembly. The support assembly 1 can be placed in a tilted angle as long as it does not collide with the surroundings; after contacting the end face of the gear, the gap can be used to adjust the vertical position to about 90°.

[0033] The disassembly device in this example has a simple structure, low cost, and convenient operation, and can be applied to the assembly of transmissions or electric drive systems in automobiles. When disassembling, the product to be disassembled does not need to be taken out of the box or shell, and it only needs to ensure that the support assembly 1 can be put in, which is easy to use. Whether it is a spline interference or an inner and outer diameter sleeve interference part to be disassembled, it can be used, and it has a wide range of applicable scenarios. It has strong versatility, and for interference parts to be disassembled with different structures, the size of the disassembly device in this example can be simply modified to adapt it. The portable design makes it more convenient to use and is suitable for different scenarios, such as defective product repair, sample trial production, and other limited conditions.

[0034] In one embodiment, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 The support assembly 1 includes at least two support arms 11; the first ends of the support arms 11 are detachably assembled on the fixing assembly 2, and the second ends of at least two support arms 11 are annularly spaced and clamped on the gear end face of the shaft gear assembly.

[0035] As an example, the support assembly 1 includes at least two support arms 11; when installed, the second ends of at least two support arms 11 are clamped on the gear end face of the shaft gear assembly in an annular interval. Specifically, the second end of the support arm 11 is inserted into one side of the gear end face using the gap between the gear and the mating surface, and the gear end face is clamped; then the first end of the support arm 11 is detachably assembled on the fixing assembly 2 to achieve fixed positioning of the support assembly 1; when disassembling, the shaft gear assembly does not need to be taken out of the box or shell, and only the support arm 11 needs to be placed in, which is convenient to use.

[0036] In this example, the number of support arms 11 can be set according to actual needs, as long as the support arms 11 are evenly spaced around the circumference of the shaft-gear assembly. When there are two support arms 11, the two support arms 11 are symmetrically arranged with the center line of the shaft-gear assembly as the symmetry axis. When the shaft-gear assembly is disassembled, the forces of the two support arms 11 on the gears of the shaft-gear assembly are balanced to avoid damage to the gears of the shaft-gear assembly.

[0037] In one embodiment, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 The support arm 11 includes a main arm 111 arranged along the axial direction of the shaft-tooth assembly, a limiting portion 112 extending from the first end of the main arm 111 along the radial direction of the shaft-tooth assembly, and a clamping portion 113 extending inwardly from the second end of the main arm 111 along the radial direction of the shaft-tooth assembly; the main arm 111 is inserted into the fixing assembly 2, the limiting portion 112 is detachably mounted on the fixing assembly 2, and the clamping portion 113 is clamped on the gear end face of the shaft-tooth assembly.

[0038] As an example, the support arm 11 includes a main arm 111, a limiting portion 112 and a clamping portion 113; the main arm 111 is arranged along the axial direction of the shaft gear assembly, the limiting portion 112 extends from the first end of the main arm 111 along the radial direction of the shaft gear assembly, and the clamping portion 113 extends inwardly from the second end of the main arm 111 along the radial direction of the shaft gear assembly. The limiting portion 112 may extend inwardly from the first end of the main arm 111 along the radial direction of the shaft gear assembly, or may extend outwardly from the first end of the main arm 111 along the radial direction of the shaft gear assembly. The main arm 111 is inserted into the fixing assembly 2 and can move in the fixing assembly 2; the limiting part 112 is detachably mounted on the fixing assembly 2 and is used to limit the position of the support arm 11; the clamping part 113 is clamped on the gear end face of the shaft gear assembly, so that the support arm 11 is conveniently inserted into one side of the gear end face by using the clearance between the gear and the matching surface (2-3mm larger than the thickness of the clamping part 113), and the gear end face is clamped, which facilitates the separation of the interference fit gear and the central shaft. Among them, the support arm 11 is made of metal, and the medium carbon steel can be subjected to surface heat treatment.

[0039] For example, when there are two support arms 11, the main arm 111 has a trapezoidal cross-section, the limiting portion 112 is a semicircular structure, and the clamping portion 113 is a semicircular thin-walled structure; the two semicircular thin-walled structures are easy to clamp and disassemble; even if the interference fit of the shaft-tooth assembly is too large, the two semicircular thin-walled structures are similar to circular structures in that they are subjected to force and will not cause damage to the product or device; and the assembly is wear-resistant and has an easy-to-replace design, so it can be quickly replaced after long-term use and wear.

[0040] In one embodiment, referring to Figure 4 The clamping portion 113 includes a first body 1131 and a second body 1132 extending inward from one side of the first body 1131 along the radial direction of the shaft gear assembly; the first body 1131 is connected to the second end of the body arm 111; the distance between the second body 1132 and the fixing assembly 2 is smaller than the distance between the first body 1131 and the fixing assembly 2.

[0041] As an example, the clamping portion 113 includes a first body 1131 and a second body 1132; the first body 1131 extends inward from the second end of the body arm 111 along the radial direction of the shaft-tooth assembly, and the second body 1132 extends inward from one side of the first body 1131 along the radial direction of the shaft-tooth assembly; the distance between the second body 1132 and the fixed assembly 2 is smaller than the distance between the first body 1131 and the fixed assembly 2; the second body 1132 is arranged in this way so that it can be close to the lower end face of the gear and can effectively avoid the weak area of ​​the tooth top of the gear to ensure that the tooth top is not damaged.

[0042] In one embodiment, referring to Figure 1 , Figure 2 and Figure 4 The fixing assembly 2 includes a support plate 21 and a limit member 22 , wherein the limit member 22 is arranged on a side of the support plate 21 away from the shaft-tooth assembly; the first end of the support assembly 1 passes through the support plate 21 and is detachably assembled in the limit member 22 .

[0043] As an example, the fixing assembly 2 includes a support plate 21 and a stopper 22. The stopper 22 is arranged on the side of the support plate 21 away from the shaft gear assembly. The stopper 22 contacts the upper surface of the support plate 21 and ensures that the first end of the support assembly 1 can leak out 2-3mm. The first end of the support assembly 1 passes through the support plate 21 and is detachably assembled in the stopper 22. The support plate 21 remains stationary, and the support assembly 1 can move in the support plate 21 along the axial and radial directions of the shaft gear assembly; the stopper 22 limits the radial movement of the support assembly 1 along the shaft gear assembly. This arrangement facilitates the installation of the disassembly device on the shaft gear assembly.

[0044] In one embodiment, referring to Figure 1 , Figure 2 and Figure 4 The support plate 21 is provided with a mounting groove 211 and an adjustment hole 212 , and the adjustment hole 212 is located on the inner side of the mounting groove 211 ; the first end of the support assembly 1 is penetrated into the mounting groove 211 , and the adjustment member 3 is installed in the adjustment hole 212 .

[0045] As an example, a mounting groove 211 and an adjustment hole 212 are provided on the support plate 21, and the adjustment hole 212 is located on the inner side of the mounting groove 211; the first end of the support assembly 1 is inserted into the mounting groove 211, and the adjustment member 3 is installed in the adjustment hole 212; specifically, the two support arms 11 are pre-clamped in the mounting grooves 211 corresponding to the two ends of the support plate 21 to keep the support plate 21 fixed, and the support arms 11 can move axially and radially along the shaft-tooth assembly in the mounting groove 211 of the support plate 21, but the axial movement of the shaft-tooth assembly is limited; hold the support plate 21 by hand, and slowly screw the adjustment member 3 into the adjustment hole 212 of the support plate 21 until the lower end of the adjustment member 3 is positioned on the central axis end face of the shaft-tooth assembly. During disassembly, the second end of the support arm 11 is inserted into one side of the gear end face by using the clearance between the gear and the mating surface, and the gear end face is clamped. The adjustment member 3 is rotated, and the adjustment member 3 moves along the axial direction of the shaft gear assembly, which can drive the central axis of the shaft gear assembly and the gear to move relative to each other, so as to drive the support assembly 1 to lift the gear of the shaft gear assembly, thereby improving the disassembly efficiency. Among them, the adjustment hole 212 is a threaded hole, and the adjustment member 3 is a threaded member, and the two are transmitted by thread. This design has a simple structure, stable and reliable clamping, and the appropriate thread specifications and sizes can be selected according to different interference amounts.

[0046] In one embodiment, referring to Figure 1 , Figure 2 and Figure 4The support plate 21 includes a support body and two support ends extending from opposite sides of the support body in opposite directions along the radial direction of the shaft gear assembly; each support end is provided with a mounting groove 211, and the support body is provided with an adjustment hole 212.

[0047] As an example, the support plate 21 includes a support body and two support ends, and the two support ends extend in opposite directions from opposite sides of the support body along the radial direction of the shaft gear assembly; the support body is a rectangular structure, and the support ends are semicircular structures. The two cooperate to make the support plate 21 have a waist-shaped structure, and it is made of metal material, and the medium carbon steel can be subjected to surface heat treatment; each support end is provided with a mounting groove 211, and the support body is provided with an adjustment hole 212. This arrangement makes the adjustment member 3 located in the middle of the two support arms 11, so that the two support arms 11 can be driven to move simultaneously through the adjustment member 3, so as to ensure that the force of the two support arms 11 to lift the gears of the shaft gear assembly is balanced, thereby avoiding damage to the gears of the shaft gear assembly.

[0048] In one embodiment, referring to Figure 2 and Figure 4 , the mounting groove 211 is a step groove.

[0049] As an example, the mounting groove 211 is a step groove. Along the axial direction of the step groove, the inner diameter of the groove on the side close to the limit member 22 is larger than the inner diameter of the groove on the side away from the limit member 22. The groove opening of the step groove on the side close to the limit member 22 extends to the outer wall of the support plate 21, and an air avoidance structure is formed on the side surface of the support plate 21 close to the limit member 22. When the support arm 11 is installed in the mounting groove 211, the air avoidance structure can provide positioning for the support arm 11, and the thickness of the air avoidance structure can limit the stroke of the support arm 11.

[0050] In one embodiment, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 The limiting member 22 is provided with a limiting groove 221 and an avoidance hole 222; the avoidance hole 222 is located on the inner side of the limiting groove 221; the first end of the support assembly 1 is detachably assembled in the limiting groove 221, and the adjustment member 3 is penetrated in the avoidance hole 222.

[0051] As an example, a limiting groove 221 and an avoidance hole 222 are provided on the limiting member 22; the avoidance hole 222 is located on the inner side of the limiting groove 221; the first end of the support assembly 1 is detachably assembled in the limiting groove 221, which can limit the left and right movement of the support assembly 1; the adjustment member 3 is inserted into the avoidance hole 222 to avoid hindering the rotation of the adjustment member 3. In this example, the limiting member 22 is a thin-walled member of a rectangular structure, made of metal material, and medium carbon steel can be subjected to surface heat treatment; using the limiting groove 221 to position the support arm 11 is simple and reliable.

[0052] In one embodiment, referring to Figure 1 , Figure 2 and Figure 4 The adjusting member 3 includes a threaded rod 31, a positioning portion 32 extending from a first end of the threaded rod 31 along the axial direction of the threaded rod 31, and a connecting portion 33 extending from a second end of the threaded rod 31 along the axial direction of the threaded rod 31; the threaded rod 31 is inserted into the fixing assembly 2, the positioning portion 32 is used to connect with the central axis of the shaft-tooth assembly, and the connecting portion 33 is used to cooperate with a tightening tool.

[0053] As an example, the adjustment member 3 includes a threaded rod 31, a positioning portion 32 and a connecting portion 33; the threaded rod 31 is inserted into the fixing assembly 2, and is specifically threadedly connected to the adjustment hole 212 of the support plate 21; the positioning portion 32 is extended from the first end of the threaded rod 31 along the axial direction of the threaded rod 31, and is used to connect with the central axis of the shaft gear assembly; the connecting portion 33 is extended from the second end of the threaded rod 31 along the axial direction of the threaded rod 31, and is used to cooperate with the tightening tool, and the specific connecting portion 33 is a square prism, which is clearance-matched with the commonly used tightening sleeve. The use of the adjustment member 3 to drive the support arm 11 to fit and press has a simple structure, is easy to clamp and disassemble, and the positioning of the lower end of the adjustment member 3 can be adapted according to the actual shape of the shaft gear assembly.

[0054] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A disassembly device, characterized in that: It includes a supporting component, a fixing component and an adjusting component; The first end of the support assembly is detachably mounted on the fixing assembly, and the second end of the support assembly is used to be clamped on the gear end face of the shaft-tooth assembly; The adjusting member is disposed inside the fixing assembly and connected to the central axis of the shaft-tooth assembly, and is used to drive the central axis of the shaft-tooth assembly and the gear to move relative to each other.

2. The disassembling device according to claim 1, characterized in that: The support assembly includes at least two support arms; The first end of the support arm is detachably mounted on the fixing assembly, and the second ends of at least two of the support arms are annularly spaced and clamped on the gear end surface of the shaft-tooth assembly.

3. The disassembling device according to claim 2, characterized in that: The support arm comprises a main body arm arranged along the axial direction of the shaft gear assembly, a limiting portion extending from a first end of the main body arm along the radial direction of the shaft gear assembly, and a clamping portion extending inwardly from a second end of the main body arm along the radial direction of the shaft gear assembly; The main body arm is inserted into the fixing assembly, the limiting portion is detachably mounted on the fixing assembly, and the clamping portion is clamped on the gear end face of the shaft-tooth assembly.

4. The disassembling device according to claim 3, characterized in that: The clamping portion includes a first body and a second body extending inwardly from one side of the first body along the radial direction of the shaft gear assembly; The distance between the second body and the fixing component is smaller than the distance between the first body and the fixing component.

5. The disassembling device according to claim 1, characterized in that: The fixing assembly comprises a support plate and a limiter, wherein the limiter is arranged on a side of the support plate away from the shaft-tooth assembly; The first end of the support assembly passes through the support plate and is detachably assembled in the limiting member.

6. The disassembling device according to claim 5, characterized in that: The support plate is provided with a mounting groove and an adjustment hole, and the adjustment hole is located inside the mounting groove; The first end of the support assembly is inserted into the installation slot, and the adjustment member is installed in the adjustment hole.

7. The disassembling device according to claim 6, characterized in that: The support plate includes a support body and two support end portions extending in opposite directions from opposite sides of the support body along the radial direction of the shaft gear assembly; each of the support end portions is provided with a mounting groove, and the support body is provided with the adjustment hole.

8. The disassembling device according to claim 7, characterized in that: The mounting groove is a step groove.

9. The disassembling device according to claim 5, characterized in that: The limiting member is provided with a limiting groove and an avoidance hole; the avoidance hole is located on the inner side of the limiting groove; The first end of the support assembly is detachably assembled in the limiting groove, and the adjustment member is inserted into the avoidance hole.

10. The disassembling device according to claim 1, characterized in that: The adjusting member comprises a threaded rod, a positioning portion extending from a first end of the threaded rod along the axial direction of the threaded rod, and a connecting portion extending from a second end of the threaded rod along the axial direction of the threaded rod; The threaded rod is inserted into the fixing assembly, the positioning portion is used to connect with the central axis of the shaft-tooth assembly, and the connecting portion is used to cooperate with a tightening tool.

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