A special fixture for shaft repair

Abstract

The application discloses a special clamp for shaft repair, which comprises a clamping mechanism, a butt joint mechanism and a locking mechanism. The clamping mechanism comprises a clamping block, a guide part and a driving part arranged on the clamping block, a follow-up part arranged on the driving part and a cutting groove arranged on the clamping block. The butt joint mechanism comprises a strip-shaped block arranged on the clamping block, a plug-in part arranged on the strip-shaped block, a sliding part arranged on the follow-up part, a butt joint part arranged on the sliding part and a reset part arranged on the follow-up part. The locking mechanism comprises an unlocking part arranged on the butt joint part and a locking part arranged on the follow-up part. Through the arrangement of the clamping mechanism, the butt joint mechanism and the locking mechanism, the staff can more uniformly extrude the drum shaft through the clamping block, and the staff does not need to twist a plurality of bolts, so that the staff is more convenient.

Description

Technical Field

[0001] This invention relates to the field of shaft clamping technology, and in particular to a special clamping tool for shaft repair. Background Technology

[0002] The lifting drum is the main transmission mechanism on the electric shovel. It is the output shaft of a two-stage spur gear reducer. There is a gear on one side that meshes with the upper end and is fitted with the drum shaft. The drum shaft and the drum are connected by an interference fit with an interference of 0.20mm. A double-row tapered roller bearing is installed at each end of the shaft. The drum reciprocates under the drive of the motor, thereby driving the lifting wire rope to perform the lifting mechanism action.

[0003] The lifting mechanism is prone to damage to the drum bearing during frequent reciprocating motion. Damage to the drum bearing can easily cause wear on the shaft mounting surface, damaging the drum shaft. Due to the large mass of the drum itself and the large interference fit between the shaft and the drum, replacing the drum shaft is very difficult. The drum shaft can be repaired. During repair, a metal repair agent is applied to the side wall of the drum shaft, then clamped with a clamping block and fixed with bolts. When fixing with bolts, if the bolts are not rotated simultaneously, the clamping block will exert an uneven pressure on the metal repair agent, resulting in uneven solidification of the drum shaft side wall. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problem that existing shaft repair fixtures have the problem that when the clamping blocks are tightened with bolts, the clamping blocks will cause uneven compression of the metal repair agent, resulting in unevenness of the side wall of the drum shaft after solidification, the present invention is proposed.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a special clamp for shaft repair, comprising: a clamping mechanism including a clamping block, a guide portion and a driving portion disposed on the clamping block, a follower portion disposed on the driving portion, and a groove disposed on the clamping block; a docking mechanism including a strip block disposed on the clamping block, an insertion portion disposed on the strip block, a sliding portion disposed on the follower portion, a docking portion disposed on the sliding portion, and a reset portion disposed on the follower portion; and a locking mechanism including an unlocking portion disposed on the docking portion and a locking portion disposed on the follower portion.

[0007] As a preferred embodiment of the shaft repair fixture of the present invention, the guide portion includes a first base and a second base disposed on the clamping block, a guide rod disposed on the first base, and a through opening disposed on the second base.

[0008] As a preferred embodiment of the shaft repair fixture of the present invention, the driving unit includes a fixing block disposed on the clamping block, a threaded rod disposed on the fixing block, a turntable disposed on the threaded rod, and a handle disposed on the turntable.

[0009] As a preferred embodiment of the shaft repair fixture of the present invention, the following part includes a chamber disposed on the driving part, a following rod disposed on the threaded rod, a pull rod disposed on the following rod, and a following block disposed on the pull rod.

[0010] As a preferred embodiment of the shaft repair fixture of the present invention, the insertion part includes a first insertion block on the strip block, a second insertion block disposed on the first insertion block, and a slot and an arc surface disposed on the second insertion block.

[0011] As a preferred embodiment of the shaft repair fixture of the present invention, the sliding part includes a groove disposed on the follower block and a slider disposed inside the groove.

[0012] As a preferred embodiment of the shaft repair fixture of the present invention, the docking part includes a locking block disposed on the slider, a docking groove and an inclined surface disposed on the locking block, and an insertion port disposed on the fixing block.

[0013] As a preferred embodiment of the shaft repair fixture of the present invention, the reset part includes an extension plate disposed on the follower block and a spring piece disposed on the extension plate.

[0014] As a preferred embodiment of the shaft repair fixture of the present invention, the unlocking part includes a guide plate disposed inside the cavity, an unlocking block disposed on the locking block, and an inclined groove disposed on the unlocking block.

[0015] As a preferred embodiment of the shaft repair fixture of the present invention, the locking part includes a locking block disposed inside the cavity and a cross-section disposed on the second insertion block.

[0016] The beneficial effects of this invention are as follows: With the clamping mechanism, after the worker applies metal repair agent to the side wall of the drum shaft, the two clamping blocks can be aligned. When the worker squeezes the two clamping blocks, the relative positions of the two clamping blocks are prevented from shifting. With the alignment mechanism, the worker only needs to turn the handle to manually squeeze the clamping blocks, eliminating the need to turn multiple bolts for alignment. With the locking mechanism, when the second insert block is inside, the restriction on the locking block is released, and the locking block restricts the second slot. Simultaneously, turning the handle can pull the strip block to move, completing the squeezing of the drum shaft. When rotated to a certain extent, the restriction on the second insert block is also released, facilitating the worker to separate the two clamping blocks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is a schematic diagram of the overall structure of the shaft repair fixture of the present invention.

[0019] Figure 2 This is a partial structural diagram of the fixing block of the shaft repair fixture of the present invention.

[0020] Figure 3 This is a schematic diagram of the separation structure of the guide rod and the second base of the shaft repair fixture of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the shaft repair fixture of the present invention.

[0022] Figure 5 This invention provides a special clamp for shaft repair. Figure 4 Enlarged structural diagram at point A in the middle.

[0023] Figure 6 This is an enlarged schematic diagram of the clamping block of the special fixture for shaft repair of the present invention.

[0024] Figure 7 This is a top view of the groove cutting structure of the special fixture for shaft repair of the present invention.

[0025] Figure 8 This is a schematic diagram of the docking structure between the clamping block and the second insert block of the special clamp for shaft repair of the present invention. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0030] Example 1

[0031] Reference Figure 1 - Figure 7 A special clamp for shaft repair is provided, including a clamping mechanism 100, which includes a clamping block 101, a guide part 102 and a drive part 103 disposed on the clamping block 101, a follower part 104 disposed on the drive part 103, and a groove 105 disposed on the clamping block 101.

[0032] There are two clamping blocks 101, and the inner walls of the two clamping blocks 101 are semi-circular.

[0033] Specifically, when the two clamping blocks 101 come into contact, they form a complete circle.

[0034] The clamping block 101 has a groove 105 at its end, and the groove 105 is adjacent to the inner wall of the clamping block 101.

[0035] Specifically, when the two clamping blocks 101 are joined together, the two grooves 105 form a storage groove, and the inclined side of the groove 105 forms an acute angle with the inner wall of the clamping block 101. When the two clamping blocks 101 are joined together, the metal repair agent that is easily squeezed can enter the interior of the groove 105.

[0036] Furthermore, the guide portion 102 includes a first base 102a and a second base 102b disposed on the clamping block 101, a guide rod 102c disposed on the first base 102a, and a through opening 102d disposed on the second base 102b.

[0037] One clamping block 101 is equipped with a first base 102a, and the other clamping block 101 is equipped with a second base 102b.

[0038] Among them, a guide rod 102c is installed at one end of the first base 102a adjacent to the second base 102b.

[0039] In this case, the second base 102b has a through opening 102d at one end adjacent to the first base 102a.

[0040] Specifically, there are two first bases 102a and two second bases 102b. The two first bases 102a are located at the top and bottom of one clamping block 101, respectively, and the two second bases 102b are located at the top and bottom of another clamping block 101, respectively.

[0041] Specifically, when the two clamping blocks 101 are docked, the guide rod 102c is inserted into the through hole 102d. By setting the guide rod 102c and the through hole 102d, the movement path of the two clamping blocks 101 during docking can be more stable, thus ensuring the stability of the compression.

[0042] Furthermore, the drive unit 103 includes a fixing block 103a disposed on the clamping block 101, a threaded rod 103b disposed on the fixing block 103a, a turntable 103c disposed on the threaded rod 103b, and a handle 103d disposed on the turntable 103c.

[0043] One of the clamping blocks 101 has a fixing block 103a installed on its outer side wall.

[0044] Among them, the threaded rod 103b is rotatably connected to the center position of the fixed block 103a.

[0045] The end of the threaded rod 103b away from the fixed block 103a is connected to the turntable 103c.

[0046] The end of the turntable 103c away from the threaded rod 103b is connected to the handle 103d.

[0047] Furthermore, the follower 104 includes a chamber 104a disposed on the drive 103, a follower rod 104b disposed on the threaded rod 103b, a pull rod 104c disposed on the follower rod 104b, and a follower block 104d disposed on the pull rod 104c.

[0048] The fixed block 103a is provided with a chamber 104a.

[0049] The center of the follower rod 104b is threaded onto the side wall of the threaded rod 103b.

[0050] Specifically, when the threaded rod 103b rotates, the threaded rod 103b can drive the follower rod 104b to move on the threaded rod 103b.

[0051] Both ends of the follower rod 104b are connected to the pull rod 104c.

[0052] The end of the pull rod 104c away from the follower rod 104b extends into the interior of the chamber 104a and is connected to the follower block 104d.

[0053] Specifically, the dimensions of the end of the follower block 104d are adapted to the dimensions of the end of the chamber 104a, making the follower block 104d more stable when moving.

[0054] Operation Process: After prolonged use, the drum shaft wears down, reducing its diameter. To minimize replacement costs, the drum shaft needs repair. Workers apply a metal repair agent to the sidewalls of the drum shaft. Then, two clamping blocks 101 are placed around the drum shaft, allowing the guide rod 102c to be inserted into the through-hole 102d. Workers push the two clamping blocks 101 closer together. During this docking process, excess metal repair agent is squeezed out between the two clamping blocks 101. Some of the metal repair agent enters the groove 105, while some is discharged from both ends of the clamping blocks 101. Workers scrape off the discharged metal repair agent. Once the metal repair agent has solidified, the two clamping blocks 101 are separated, and the repaired drum shaft is polished for future use.

[0055] Example 2

[0056] Reference Figure 1 - Figure 8 The difference between this embodiment and the first embodiment is that the docking mechanism 200 includes a strip block 201 disposed on the clamping block 101, an insertion part 202 disposed on the strip block 201, a sliding part 203 disposed on the follower part 104, a docking part 204 disposed on the sliding part 203, and a reset part 205 disposed on the follower part 104.

[0057] Among them, a strip block 201 is installed on the outer wall of the clamping block 101, and the strip block 201 is located between the two first bases 102a.

[0058] Furthermore, the insertion part 202 includes a first insertion block 202a on the strip block 201, a second insertion block 202b disposed on the first insertion block 202a, and a slot 202c and an arc surface 202d disposed on the second insertion block 202b.

[0059] Among them, the first insert block 202a is installed at one end of the strip block 201 near the second base 102b.

[0060] The second insert 202b is installed at the end of the first insert 202a that is away from the strip block 201.

[0061] The second insert 202b has slots 202c on both sides.

[0062] The second insert 202b has an arc surface 202d located away from the first insert 202a.

[0063] Furthermore, the sliding part 203 includes a groove 203a disposed on the follower block 104d, and a slider 203b disposed inside the groove 203a.

[0064] Among them, the end of the follower block 104d away from the pull rod 104c is provided with a slide groove 203a.

[0065] The slide 203a has a slider 203b inside it.

[0066] Specifically, the end face of the groove 203a is convex to prevent the slider 203b from detaching from the inside of the groove 203a.

[0067] Specifically, there are two sliders 203b, and both sliders 203b are located inside the groove 203a.

[0068] Furthermore, the docking part 204 includes a locking block 204a disposed on the slider 203b, a docking groove 204b and a slope 204c disposed on the locking block 204a, and an insertion port disposed on the fixing block 103a.

[0069] One end of the slider 203b extends to the outside of the groove 203a and connects to the card block 204a.

[0070] There are two card blocks 204a, and a docking groove 204b and an inclined surface 204c are formed on the adjacent side of the two card blocks 204a.

[0071] Specifically, the docking groove 204b is located between the slide groove 203a and the inclined surface 204c.

[0072] In this case, a socket is provided at one end of the fixing block 103a adjacent to the strip block 201.

[0073] Specifically, the insertion port and the chamber 104a are interconnected.

[0074] Furthermore, the reset part 205 includes an extension plate 205a disposed on the follower block 104d, and a spring piece 205b disposed on the extension plate 205a.

[0075] Among them, the follower block 104d is equipped with an extension plate 205a at one end adjacent to the strip block 201.

[0076] Specifically, there are two extension plates 205a, which are located at the top and bottom of the follower block 104d, respectively.

[0077] Among them, the two extension plates 205a are connected to the opposite side of the spring piece 205b, and the end of the spring piece 205b away from the extension plate 205a is connected to the locking block 204a.

[0078] Operation process: To facilitate the operator's squeezing of the two clamping blocks 101, when the two clamping blocks 101 are aligned, and the guide rod 102c is located inside the through-hole 102d, the strip block 201 drives the first insert block 202a, and the first insert block 202a drives the second insert block 202b through the insertion hole into the interior of the chamber 104a. At this time, the arc surface 202d on the second insert block 202b squeezes the inclined surface 204c, causing the two clamping blocks 204a to move away from each other, thus locking... Block 204a drives slider 203b to move inside groove 203a. Locking block 204a causes spring 205b to retract. When the second insert block 202b enters the mating groove 204b, spring 205b returns to its original position, causing locking blocks 204a to move closer together, thus engaging the second insert block 202b. At this time, the operator rotates handle 103d, which drives turntable 103c to rotate. Turntable 103c then drives threaded rod 103... When threaded rod 103b rotates, due to the restriction of pull rod 104c, follower rod 104b moves on the side wall of threaded rod 103b. Follower rod 104b moves away from clamping block 101. Follower rod 104b drives pull rod 104c. Pull rod 104c drives follower block 104d to move inside chamber 104a. Follower block 104d drives slider 203b. Slider 203b drives clamping block 204a. Clamping block 204a drives... The second insert 202b moves, which drives the first insert 202a. The first insert 202a drives the strip rod, which drives one clamping block 101 to move closer to the other clamping block 101, squeezing the metal repair agent on the side wall of the drum shaft. When the two clamping blocks 101 are in complete contact, the excess metal repair agent on the side wall of the drum shaft is squeezed into the groove 105 or the outside of the clamping block 101. At this time, stop rotating the handle 103d and wait for the metal repair agent to solidify.

[0079] Example 3

[0080] Reference Figure 1 - Figure 8 The difference between this embodiment and the previous embodiment is that: the locking mechanism 300, the unlocking part 301 provided on the docking part 204, and the locking part 302 provided on the follower part 104.

[0081] Furthermore, the unlocking part 301 includes a guide plate 301a disposed inside the chamber 104a, an unlocking block 301b disposed on the locking block 204a, and a slanted groove 301c disposed on the unlocking block 301b.

[0082] The guide plate 301a is installed on the inner wall of the chamber 104a, and the guide plate 301a is located on the side adjacent to the strip plate.

[0083] Among them, the unlocking block 301b is installed on the side of the card block 204a away from the docking groove 204b.

[0084] Specifically, when the locking block 204a moves the slider 203b, the locking block 204a moves the unlocking block 301b together, but the unlocking block 301b does not contact the extension plate 205a.

[0085] Among them, the unlocking block 301b has an inclined groove 301c on the side adjacent to the guide plate 301a.

[0086] Specifically, the inclined surface 204c of the inclined groove 301c is close to the top of the unlocking block 301b. When the second inserting block 202b docks with the locking block 204a, the follower block 104d drives the locking block 204a to move laterally, so that the guide plate 301a can be inserted into the interior of the inclined groove 301c.

[0087] Furthermore, the locking part 302 includes a locking block 302a disposed inside the chamber 104a, and a cross-section 302b disposed on the second insertion block 202b.

[0088] There are two locking blocks 302a, which are installed on the two inner walls of the chamber 104a respectively, and the two locking blocks 302a are facing each other.

[0089] Specifically, when the locking block 204a is not docked with the second insertion block 202b, the two locking blocks 204a are in contact with each other. At this time, the locking block 302a is located inside the docking groove 204b. At this time, the locking block 204a is blocked by the locking block 302a, and even if the handle 103d is turned, the locking block 204a cannot move.

[0090] Among them, the second insert block 202b has cut surfaces 302b on both sides of the side walls adjacent to the locking block 302a.

[0091] Specifically, when the second insert block 202b is located inside the docking groove 204b, the second insert block 202b is not blocked by the locking block 302a. When the two clamping blocks 101 are in full contact, the locking block 302a is not in contact with the first insert block 202a. When the second insert block 202b is located inside the docking groove 204b, the two clamping blocks 204a are not in contact with each other.

[0092] Operating Procedure: After the metal repair agent solidifies, the operator needs to separate the two clamping blocks 101 and grind the drum shaft. The operator then rotates the handle 103d in the reverse direction, causing the threaded rod 103b to rotate in the reverse direction. This causes the follower rod 104b to move to the side adjacent to the clamping block 101. The follower rod 104b drives the pull rod 104c, which in turn drives the follower block 104d to move inside the chamber 104a. The follower block 104d drives the slider 203b, which in turn drives the locking block 204a. The second insert block 202b is driven, which in turn causes the first insert block 202a to disengage from the inside of the insertion port. The first insert block 202a then drives the strip block 201, which in turn drives the clamping block 101. The clamping block 101 then drives the guide rod 102c to disengage from the inside of the through-hole 102d. As the locking block 302a gradually comes into contact with the locking block 204a, the guide plate 301a enters the interior of the inclined groove 301c. The guide plate 301a presses against the inclined groove 301c, and the guide plate 301a causes the unlocking block 301b to move. When the two locking blocks 204a move away from each other, the locking block 204a causes the spring 205b to retract again. The operator can then pull a clamping block 101, which in turn moves a strip block 201. This strip block 201 then moves a first insert block 202a, which in turn moves a second insert block 202b out of the chamber 104a. At this point, the operator rotates the handle 103d in the forward direction, causing the follower block 104d to move the locking block 204a. A causes the unlocking block 301b to separate from the guide plate 301a. At this time, the spring piece 205b returns to its original position, causing the two locking blocks 204a to move closer to each other. When one side of the locking block 302a contacts the inner wall of the docking groove 204b, the follower block 104d cannot continue to move, making it convenient for the staff to repair the drum shaft next time. When the second insert block 202b is inside the docking groove 204b, the distance between the two docking blocks increases and they do not contact the locking block 302a. The follower block 104d can only continue to move when the handle 103d is turned.

[0093] Repair approach:

[0094] The design concept is to use the shoulder on the drum shaft as the reference surface and make two semi-circular clamping blocks 101. The inner diameter of the clamps is guaranteed to be an interference fit of 0.04-0.06mm with the inner diameter of the bearing. After applying metal repair agent to the side wall of the drum shaft, clamping blocks 101 are used to press and fix it. After the repair agent solidifies, clamping blocks 101 are removed and the drum shaft is polished. After polishing, the bearing can be installed.

[0095] Ensure that the machining error between the clamping block 101 and the shaft shoulder mating surface is less than 0.02mm, the machining error between the clamping block 101 and the bearing mounting surface is less than 0.02mm, the inner diameter of the clamping block 101 is 289mm, the machined shaft diameter and the bearing inner diameter are interfered by 0.06mm-0.10mm, and the surface roughness of each surface of the clamping block 101, including the end face, is less than 6.3μm.

[0096] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0097] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0098] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0099] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A special fixture for shaft repair, characterized in that: include, The clamping mechanism (100) includes a clamping block (101), a guide portion (102) and a drive portion (103) disposed on the clamping block (101), a follower portion (104) disposed on the drive portion (103), and a groove (105) disposed on the clamping block (101). The docking mechanism (200) includes a strip block (201) disposed on the clamping block (101), an insertion part (202) disposed on the strip block (201), a sliding part (203) disposed on the follower part (104), a docking part (204) disposed on the sliding part (203), and a reset part (205) disposed on the follower part (104). The locking mechanism (300) includes an unlocking part (301) provided on the docking part (204) and a locking part (302) provided on the follower part (104). The drive unit (103) includes a fixing block (103a) disposed on the clamping block (101), a threaded rod (103b) disposed on the fixing block (103a), a turntable (103c) disposed on the threaded rod (103b), and a handle (103d) disposed on the turntable (103c). The follower part (104) includes a chamber (104a) disposed on the drive part (103), a follower rod (104b) disposed on the threaded rod (103b), a pull rod (104c) disposed on the follower rod (104b), and a follower block (104d) disposed on the pull rod (104c). The plug-in part (202) includes a first plug (202a) on the strip block (201), a second plug (202b) disposed on the first plug (202a), and a slot (202c) and an arc surface (202d) disposed on the second plug (202b). The sliding part (203) includes a groove (203a) disposed on the follower block (104d) and a slider (203b) disposed inside the groove (203a). The docking part (204) includes a locking block (204a) disposed on the slider (203b), a docking groove (204b) and a slope (204c) disposed on the locking block (204a), and an insertion port disposed on the fixing block (103a).

2. The shaft repair fixture as described in claim 1, characterized in that: The guide part (102) includes a first base (102a) and a second base (102b) disposed on the clamp (101), a guide rod (102c) disposed on the first base (102a), and a through opening (102d) disposed on the second base (102b).

3. The shaft repair fixture as described in claim 2, characterized in that: The reset part (205) includes an extension plate (205a) disposed on the follower block (104d) and a spring piece (205b) disposed on the extension plate (205a).

4. The shaft repair fixture as described in claim 3, characterized in that: The unlocking part (301) includes a guide plate (301a) disposed inside the chamber (104a), an unlocking block (301b) disposed on the locking block (204a), and a slanted groove (301c) disposed on the unlocking block (301b).

5. The shaft repair fixture as described in claim 4, characterized in that: The locking part (302) includes a locking block (302a) disposed inside the chamber (104a) and a cross-section (302b) disposed on the second insert (202b).

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