CN216205792U - Shifting fork assembly checking fixture - Google Patents

Abstract

The utility model relates to a shifting fork assembly checking fixture which comprises a detection device, an end positioning device and a fork opening positioning device, wherein the end positioning device is fixedly arranged and used for positioning or loosening two ends of a shifting fork assembly; the fork opening positioning device is fixedly arranged on one side of the end part positioning device and is used for positioning or loosening a fork opening of the shifting fork assembly; the detection device is fixedly arranged at one end of the fork opening positioning device and used for detecting the size of the fork opening of the shifting fork assembly. The utility model has the advantages of compact structure, capability of positioning a plurality of points of the shifting fork assembly, increased stability of the shifting fork assembly, ensured detection accuracy and ensured quality of the shifting fork assembly.

Description

Shifting fork assembly checking fixture

Technical Field

The utility model relates to the technical field of automobile part detection tools, in particular to a shifting fork assembly detection tool.

Background

The shift fork subassembly is as the important part on the motor transmission, and multiple derailleur such as MT, DCT, AMT all need the fork subassembly to realize the gear shift at present, and the fork subassembly has important influence to the performance of shifting gears, if shift fork structure position has some deviations, can cause defects such as not in place of shifting gears, forms the potential safety hazard. Therefore, fork assembly need detect each critical dimension before the assembly, and examine utensil among the prior art to fork assembly's location unstable, fork assembly rocks easily, influences the degree of accuracy that detects.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a shifting fork assembly checking fixture and aims to solve the problems in the prior art.

The technical scheme for solving the technical problems is as follows:

a shifting fork assembly checking fixture comprises a detection device, an end positioning device and a fork opening positioning device, wherein the end positioning device is fixedly arranged and used for positioning or loosening two ends of a shifting fork assembly; the fork opening positioning device is fixedly arranged on one side of the end part positioning device and is used for positioning or loosening the fork opening of the shifting fork assembly; the detection device is fixedly arranged at one end of the fork opening positioning device and used for detecting the size of the fork opening of the shifting fork assembly.

The utility model has the beneficial effects that: in the detection process, the two ends of the shifting fork assembly are positioned through the end positioning devices, and meanwhile, the fork opening of the shifting fork assembly is positioned through the fork opening positioning devices, so that the stability of the shifting fork assembly is improved, the shifting fork assembly is prevented from being displaced, the detection accuracy is improved, and the detection precision is high; then, the size of the fork opening of the shifting fork assembly is detected through a detection device, and the quality of the shifting fork assembly is guaranteed. The utility model has compact structure, can realize the positioning of a plurality of points of the shifting fork assembly, increases the stability of the shifting fork assembly, ensures the detection accuracy and ensures the quality of the shifting fork assembly.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the fork mouth positioning device comprises a positioning disc and a mounting seat, and the mounting seat is fixedly arranged on one side of the end part positioning device; the positioning disc is vertically and rotatably arranged on the mounting seat and used for positioning or loosening the fork opening of the shifting fork assembly.

When the further scheme is adopted, the beneficial effects are that during detection, firstly, two ends of the shifting fork assembly are fixed through the end positioning device; then, rotate the positioning disk through the mode that technical personnel in the field can think that the positioning disk blocks fork assembly's fork mouth, increase fork assembly's stability, guarantee the degree of accuracy that detects, guarantee fork assembly's quality.

Furthermore, a handle is movably arranged on the mounting seat, the handle can move on the mounting seat along the axial direction of the handle, the handle is rotatably connected with the mounting seat, and one end of the handle is fixedly connected with the positioning disk.

When the further scheme is adopted, the beneficial effects are that during detection, firstly, two ends of the shifting fork assembly are fixed through the end positioning device; then, the staff promotes the positioning disk through the handle and removes to fork assembly's fork mouth in to the positioning disk, then rotates the handle and drives the positioning disk and rotate to the fork mouth that the positioning disk blocked fork assembly, increases fork assembly's stability, guarantees the degree of accuracy that detects, guarantees fork assembly's quality.

Furthermore, both sides of the positioning plate are respectively in a straight line shape.

The beneficial effects of adopting above-mentioned further scheme are simple structure, reasonable in design, the positioning disk can with fork opening joint of fork assembly to fix fork assembly, increase fork assembly's stability.

Furthermore, the end positioning device comprises two positioning mechanisms which are relatively fixedly arranged and are respectively used for positioning or loosening two ends of the shifting fork assembly.

The beneficial effect who adopts above-mentioned further scheme is that when detecting, fix a position fork assembly's both ends respectively through two positioning mechanism, guarantee fork assembly's stability to subsequent detection device detects.

Further, each positioning mechanism comprises an end driving piece and a centering ring, wherein the centering ring is vertically arranged and can move along the axial direction of the centering ring; the end driving part is movably arranged and used for driving the centering rings to move, so that the two centering rings are respectively abutted against or separated from two ends of the shifting fork assembly.

When the further scheme is adopted, the beneficial effects are that when the positioning is carried out, firstly, the two centering rings are respectively driven to be away from each other by the two end driving pieces; then, between the two centering rings, in a manner that will occur to those skilled in the art; and finally, the two centering rings are driven to be close to each other through the two end driving parts respectively, and the two ends of the shifting fork assembly are inserted into the two centering rings to abut against the two ends of the shifting fork assembly, so that the shifting fork assembly is positioned quickly.

Furthermore, each positioning mechanism also comprises a fixed seat, and the fixed seat is fixedly arranged; the centering ring can be mounted on the fixed seat in a way of moving along the axial direction of the centering ring; the end driving part is movably arranged on the fixed seat and is fixedly connected with the centering ring through a push rod.

Adopt above-mentioned further scheme's beneficial effect be simple structure, through fixing base installation centering ring and tip driving piece, easy to assemble.

Furthermore, grooves are formed in the tops of the two fixed seats, and through mounting holes are formed in the ends, close to each other, of the two grooves respectively; the two centering rings are respectively slidably arranged in the two mounting holes, two ends of each centering ring respectively extend out of the corresponding mounting hole, and one ends, far away from each other, of the centering rings are respectively fixedly provided with a stop block; the two end driving parts are respectively movably arranged on one sides of the two grooves far away from each other.

The beneficial effects of adopting above-mentioned further scheme are that simple structure, reasonable in design, the fixing base structure is special, and it effectively cooperates with the dog, can avoid the rigid contact of centering ring and fixing base through the dog, reduces the wearing and tearing of centering ring, extension equipment life.

The fork opening positioning device is fixedly arranged on one side of the end part positioning device, which is far away from the fork opening positioning device, and is used for positioning or loosening the shifting fork assembly.

The beneficial effects of adopting above-mentioned further scheme are that when detecting, fix a position or loosen fork assembly through roof pressure positioner, further improve fork assembly's stability, guarantee the follow-up accuracy that detects of fork assembly.

Furthermore, the jacking and positioning device comprises a jacking and driving part and a spring top, wherein the spring top is vertically arranged and can be vertically and vertically arranged above the end positioning device; the jacking driving piece fixing frame is arranged above the spring top and used for driving the spring top to move up and down so as to press down or loosen the shifting fork assembly.

The beneficial effects of adopting above-mentioned further scheme are that when detecting, reciprocate in order to push down or loosen fork assembly through the drive bullet top of roof pressure driving piece drive, further improve fork assembly's stability, guarantee the follow-up accuracy that detects of fork assembly.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the fork assembly of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a fork assembly; 2. positioning a plate; 3. a mounting seat; 4. a handle; 5. an end drive; 6. a centering ring; 7. a fixed seat; 8. a push rod; 9. a stopper; 10. pressing the driving piece; 11. ejecting; 12. a base plate; 13. positioning seats; 14. an operating handle; 15. a supporting seat; 16. a return spring; 17. a dial indicator; 18. detecting a driving piece; 19. a bracket; 20. and a limiting block.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, the utility model provides a shifting fork assembly checking fixture, which comprises a detection device, an end positioning device and a fork opening positioning device, wherein the end positioning device is fixedly arranged and used for positioning or loosening two ends of a shifting fork assembly 1; the fork opening positioning device is fixedly arranged on one side of the end part positioning device and is used for positioning or loosening a fork opening of the shifting fork assembly 1; the detection device is fixedly arranged at one end of the fork opening positioning device and used for detecting the size of the fork opening of the shifting fork assembly 1. In the detection process, two ends of the shifting fork assembly 1 are positioned through the end positioning device, and meanwhile, a fork opening of the shifting fork assembly 1 is positioned through the fork opening positioning device, so that the stability of the shifting fork assembly 1 is improved, the shifting fork assembly 1 is prevented from being displaced, the detection accuracy is improved, and the detection precision is high; then, detect fork assembly through detection device, guarantee fork assembly 1's quality. The utility model has compact structure, can realize the positioning of a plurality of points of the shifting fork assembly 1, increases the stability of the shifting fork assembly 1, ensures the detection accuracy and ensures the quality of the shifting fork assembly 1.

Example 1

On the basis of the structure, the present embodiment further includes a bottom plate 12, and the detecting device, the end positioning device and the fork positioning device are respectively and fixedly installed on the bottom plate 12. This scheme simple structure through bottom plate 12 with detection device, tip positioner and fork mouth positioner integration in an organic whole, the integrated level is high, convenient to use.

Example 2

On the basis of embodiment 1, in this embodiment, preferably, the bottom plate 12 is a rectangular plate-shaped seat body, and the shape is regular, so that the installation is convenient.

In addition to the embodiments described above, the base 12 may also take other suitable geometries, such as a disc-like structure.

Example 3

On the basis of the above embodiments, in this embodiment, the fork positioning device includes a positioning plate 2 and a mounting seat 3, and the mounting seat 3 is fixedly disposed at a position of the bottom plate 12 corresponding to one side of the end positioning device; the positioning plate 2 is vertically and rotatably arranged on the mounting seat 3 and used for positioning or loosening a fork opening of the shifting fork assembly 1. During detection, firstly, fixing two ends of the shifting fork assembly 1 through end positioning devices; then, rotate positioning disk 2 to positioning disk 2 and block the fork mouth of fork assembly 1 through the mode that technical staff in the field can think, increase fork assembly 1's stability, guarantee the degree of accuracy that detects, guarantee fork assembly 1's quality.

Based on the scheme, the positioning of the positioning plate 2 depends on the friction force of the edge of the positioning plate closely attached to the fork opening of the shifting fork assembly 1.

Example 4

On the basis of embodiment 3, in this embodiment, a handle 4 is installed on the installation base 3, and the handle 4 can move on the installation base 3 along the axial direction of itself, and the specific installation mode is as follows: the mounting seat 3 is provided with a through hole, the handle 4 can move in the through hole along the self axial direction, the handle is rotatably connected with the mounting seat 3, one end of the handle is fixedly connected with the positioning disk 2, and the handle can drive the positioning disk 2 to rotate around the self axial direction. During detection, firstly, fixing two ends of the shifting fork assembly 1 through end positioning devices; then, the staff promotes positioning disk 2 through handle 4 and removes to fork assembly 1's fork mouth to positioning disk 2, then rotates handle 4 and drives positioning disk 2 and rotate to positioning disk 2 and block fork assembly 1's fork mouth, increases fork assembly 1's stability, guarantees the degree of accuracy that detects, guarantees fork assembly 1's quality. This scheme staff's accessible handle 4 operation positioning disk 2, it is easy and simple to handle.

Except the above embodiment, the handle 4 may not be provided, at this time, the rotating shaft is rotatably installed on the installation seat 3, and the positioning disk 2 is coaxially and fixedly sleeved on one end of the rotating shaft and is located in the fork opening of the shifting fork assembly 1. During detection, a worker manually rotates the positioning disc 2 to clamp the positioning disc with the fork opening of the shifting fork assembly 1 so as to fix the shifting fork assembly 1. In comparison, this solution also allows a further positioning of fork assembly 1, but makes it inconvenient to disassemble fork assembly 1 compared to the solution of handle 4.

Example 5

On the basis of embodiment 4, in this embodiment, the handle 4 is preferably a rod-shaped handle, and has a simple structure and is easy and convenient to operate.

Preferably, in this embodiment, a limiting block 20 is fixedly installed at the other end of the handle 4, so as to limit the movement of the handle 4, so as to ensure that the positioning plate 2 can be accurately fed into the fork opening of the fork assembly 1.

In addition to the above embodiments, the handle 4 may also have other upward moving geometries, such as a rod-shaped handle 4 with one end and an arc-shaped handle 4 with the other end, which is convenient for operation but does not affect the rotation and movement of the handle 4.

Example 6

In any one of embodiments 3 to 5, in this embodiment, two sides of the positioning plate 2 are respectively linear, and two ends thereof are arc-shaped. This scheme simple structure, reasonable in design, positioning disk 2 can with fork subassembly 1's fork mouth joint to fix fork subassembly 1, increase fork subassembly 1's stability.

Example 7

On the basis of the above embodiments, in the present embodiment, the end positioning device includes two positioning mechanisms, and the two positioning mechanisms are relatively fixedly disposed on the bottom plate 12 and are respectively used for positioning or releasing two ends of the fork assembly 1. During detection, the two ends of the shifting fork assembly 1 are respectively positioned through the two positioning mechanisms, so that the stability of the shifting fork assembly 1 is ensured, and the detection of a subsequent detection device is facilitated.

Example 8

On the basis of embodiment 7, in the present embodiment, each positioning mechanism includes an end driver 5 and a centering ring 6, and the centering ring 6 is vertically disposed and is movable in the axial direction thereof; the end driving part 5 is movably arranged and used for driving the centering rings 6 to move, so that the two centering rings 6 are respectively abutted against or separated from two ends of the shifting fork assembly 1. When positioning, firstly, the two centering rings 6 are respectively driven to be away from each other by the two end driving pieces 5; then, between the two centering rings 6, in a manner that will occur to those skilled in the art; and finally, driving the two centering rings 6 to be close to each other through the two end driving pieces 5 respectively, and inserting the two ends of the shifting fork assembly 1 into the two centering rings 6 to realize the quick positioning of the shifting fork assembly 1.

Based on the above scheme, the upside that two above-mentioned centering rings 6 are close to one end each other is equipped with the breach, conveniently fixes a position fork assembly 1's both ends, and can hold fork assembly 1 to a certain extent, guarantees fork assembly 1's stability.

Example 9

On the basis of embodiment 8, in this embodiment, each positioning mechanism further includes a fixing seat 7, and the fixing seat 7 is fixedly disposed on the bottom plate 12; the centering ring 6 can be arranged on the fixed seat 7 along the axial direction thereof; the end drive 5 is movably mounted on a fixed seat 7, which is fixedly connected with the centering ring 6 by a push rod 8. This scheme simple structure, through 7 installation centering rings 6 of fixing base and end drive spare 5, easy to assemble.

Example 10

On the basis of embodiment 9, preferably, in this embodiment, the top of the two fixing seats 7 is provided with a groove, one end of the two grooves close to each other is respectively provided with a through mounting hole, the two centering rings 6 are respectively slidably mounted in the two mounting holes, and two ends of the two centering rings respectively extend out of the corresponding mounting holes. In addition; the two end driving pieces 5 are respectively and fixedly arranged at one sides of the two grooves far away from each other. The scheme has the advantages of simple structure and convenience in installation.

Example 11

On the basis of the embodiment 10, the two mounting holes are respectively and fixedly provided with the bushings, the two centering rings 6 are respectively and coaxially and slidably arranged in the two bushings, and the outer walls of the two centering rings are respectively attached to the inner walls of the two bushings. This scheme simple structure, the direct rigid contact of centering ring 6 and fixing base 7 can be avoided to the bush, avoids centering ring 6 to take place wearing and tearing, extends centering ring 6's life, practices thrift the cost.

Example 12

On the basis of any one of embodiments 10 to 11, in this embodiment, a stopper 9 is fixedly installed at one end of the centering ring 6, that is, the stoppers 9 are respectively fixedly installed at the ends of the two centering rings 6 away from each other, and the two push rods 8 respectively penetrate through the two stoppers 9 and are fixedly connected with the two centering rings 6. This scheme simple structure, reasonable in design can avoid centering ring 6 and fixing base 7's rigid contact through dog 9, reduces centering ring 6's wearing and tearing, extension equipment life. During the location, tip driving piece 5 drives centering ring 6 through push rod 8 and removes, and in removing the displacement formation, dog 9 can follow centering ring 6 and remove to its one side striking with the recess, therefore dog 9 can avoid centering ring 6 and fixing base 7 direct striking, protection centering ring 6.

Example 13

In addition to any one of embodiments 8 to 12, in this embodiment, the end driving part 5 includes a positioning seat 13 and an operating handle 14, and the positioning seat 13 is fixed on the fixing seat 7; one end of the operating handle 14 is rotatably connected with the positioning seat 13 and is rotatably connected with one end of the push rod 8 through at least one connecting rod. During operation, the operating handle 14 is rotated, the operating handle 14 pushes and pulls the push rod 8 through the connecting rod, and the push rod 8 drives the stop block 9 and the centering ring 6 to move.

Besides the above embodiments, the end driving part 5 may also be an electric driving part, such as a micro cylinder, which is fixedly installed on the fixing base 7, and a telescopic end of the micro cylinder extends along the axial direction of the push rod 8 and is fixedly connected with one end of the push rod 8. During detection, the micro cylinder stretches and retracts and drives the centering ring 6 to move through the push rod 8.

Example 14

On the basis of the above embodiments, the present embodiment further includes a top pressure positioning device, and the top pressure positioning device is fixedly installed on one side of the end positioning device away from the fork opening positioning device, and is used for positioning or releasing the fork assembly 1. During detection, the shifting fork assembly 1 is positioned or loosened through the jacking positioning device, the stability of the shifting fork assembly 1 is further improved, and the accuracy of subsequent detection of the shifting fork assembly 1 is ensured.

Example 15

On the basis of the embodiment 14, in the embodiment, the jacking and positioning device comprises a jacking and driving part 10 and a spring top 11, wherein the spring top 11 is vertically arranged and can be vertically and vertically arranged above the end positioning device; the top pressure driving piece 10 is fixedly arranged above the spring top 11 and used for driving the spring top 11 to move up and down so as to press down or release the shifting fork assembly 1. During detection, the ejection device 10 drives the ejection device 11 to move up and down to press down or loosen the shifting fork assembly 1, so that the stability of the shifting fork assembly 1 is further improved, and the accuracy of subsequent detection of the shifting fork assembly 1 is guaranteed.

Example 16

On the basis of the embodiment 15, in this embodiment, the pressing and positioning device further includes a supporting seat 15, and the supporting seat 15 is fixedly installed on the bottom plate 12; the jacking driving piece 10 is fixedly arranged at the top of the supporting seat 15, and is convenient to install.

Example 17

On the basis of embodiment 16, in this embodiment, preferably, the supporting seat 15 is preferably an L-shaped seat, the L-shaped seat is formed by splicing a horizontally arranged horizontal part and a vertically arranged vertical part, the lower end of the vertical part is fixedly connected with one end of the horizontal part, and the two are integrally formed, so that the structure is simple; the top pressure driving piece 10 is fixedly arranged on the vertical part of the supporting seat 15. During detection, the horizontal part of the supporting seat 15 supports the corresponding part of the shifting fork assembly 1, and then the ejection 11 is driven by the ejection driving piece 10 to press the shifting fork assembly 1 downwards or move upwards to release the shifting fork assembly 1.

Example 18

On the basis of any one of embodiments 15 to 17, in this embodiment, the pressing driving member 10 includes a positioning seat and an operating handle, and the positioning seat is fixed on the supporting seat 15; one end of the operating handle is rotatably connected with the top of the positioning seat and is rotatably connected with the upper end of the ejection top 11 through at least one connecting rod. When in operation, the operating handle is rotated and pushes and pulls the ejection top 11 through the connecting rod.

Example 19

On the basis of the embodiment 18, preferably, in this embodiment, the elastic ejecting 11 is provided with a recess along the circumferential direction thereof, and the position of the elastic ejecting corresponding to the recess is coaxially and slidably sleeved with the return spring 16, so that the elastic ejecting 11 can be automatically and rapidly returned conveniently, and time and labor are saved.

Example 20

On the basis of the above embodiments, in this embodiment, the detection device includes a detection driving member 18 and two dial indicators 17, and the detection driving member 18 is fixedly mounted on the bottom plate 12 and is used for driving the two dial indicators 17 to move to two sides of the fork opening of the probe detection fork assembly 1 of the two dial indicators 17.

Example 21

On the basis of the embodiment 20, in this embodiment, the detection driving member 18 includes a positioning seat and an operation handle, the positioning seat is fixed on the bottom plate 12; one end of the operating handle is rotatably connected with the top of the positioning seat and is rotatably connected with one end of the connecting rod through at least one connecting rod, and the other end of the connecting rod is fixedly connected with the two dial indicators 17; in addition, the positioning seat is provided with a through hole for the connecting rod to pass through, so that the stability of the connecting rod is improved. When in operation, the operating handle is rotated and pushes and pulls the two dial indicators 17 through the connecting rod and the connecting rod.

Based on above-mentioned scheme, two percentage table 17 accessible supports and connecting rod fixed connection.

Example 22

In addition to the embodiment 21, in this embodiment, in order to increase the stability of the movement of the dial indicator 17, a bracket 19 is further fixedly installed at a position of the bottom plate 12 corresponding to the position between the fork positioning device and the detection driving member 18, and the bracket 19 is slidably connected with the connecting rod, that is, the connecting rod passes through the bracket 19 and is slidably connected with the bracket 19.

The working principle of the utility model is as follows:

firstly, the two centering rings 6 are driven away from each other by the two end drives 5, respectively; then, between the two centering rings 6, in a manner that will occur to those skilled in the art, and the support seat 15 supports the fork assembly 1; finally, the two centering rings 6 are driven to approach each other through the two end driving pieces 5 respectively until the two ends of the shifting fork assembly 1 are inserted into the two centering rings 6, so that the shifting fork assembly 1 is positioned quickly;

secondly, the ejection ejector 11 is driven by the ejection driving piece 10 to move downwards to press the shifting fork assembly 1 downwards;

thirdly, a worker pushes the positioning disc 2 to move to the fork opening of the shifting fork assembly 1 through the handle 4, then rotates the handle 4 and drives the positioning disc 2 to rotate until the positioning disc 2 blocks the fork opening of the shifting fork assembly 1, so that the stability of the shifting fork assembly 1 is improved, the detection accuracy is ensured, and the quality of the shifting fork assembly 1 is ensured;

fourthly, the two dial indicators 17 are driven to move to the two sides of the fork opening of the shifting fork assembly 1 through the detection driving piece 18 so as to detect whether the size of the corresponding position of the shifting fork assembly 1 is qualified or not; when the size of the shifting fork assembly 1 is qualified, taking down the shifting fork assembly 1 according to the reverse sequence and placing the shifting fork assembly in a qualified product area; when the shifting fork assembly 1 is unqualified in size, the shifting fork assembly 1 is taken down according to the reverse sequence and is placed in an unqualified product area.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The utility model provides a utensil is examined to fork assembly which characterized in that: the device comprises a detection device, an end positioning device and a fork opening positioning device, wherein the end positioning device is fixedly arranged and used for positioning or loosening two ends of a shifting fork assembly (1); the fork opening positioning device is fixedly arranged on one side of the end part positioning device and is used for positioning or loosening a fork opening of the shifting fork assembly (1); the detection device is fixedly arranged at one end of the fork opening positioning device and used for detecting the size of the fork opening of the shifting fork assembly (1).

2. The fork assembly testing fixture of claim 1, wherein: the fork opening positioning device comprises a positioning disc (2) and a mounting seat (3), and the mounting seat (3) is fixedly arranged on one side of the end positioning device; the positioning disc (2) is vertically and rotatably mounted on the mounting seat (3) and used for positioning or loosening the fork opening of the shifting fork assembly (1).

3. The fork assembly testing fixture of claim 2, wherein: install handle (4) on mount pad (3), handle (4) can follow self axial displacement on mount pad (3), its with mount pad (3) rotate to be connected, and its one end with positioning disk (2) fixed connection.

4. The fork assembly testing fixture of claim 2, wherein: the two sides of the positioning disc (2) are respectively in a straight line shape.

5. A fork assembly gauge according to any one of claims 1-4, characterized in that: the end positioning device comprises two positioning mechanisms which are oppositely and fixedly arranged and are respectively used for positioning or loosening two ends of the shifting fork assembly (1).

6. The fork assembly testing fixture of claim 5, wherein: each positioning mechanism comprises an end driving piece (5) and a centering ring (6), wherein the centering ring (6) is vertically arranged and can move along the axial direction of the centering ring; the end driving piece (5) is movably arranged and used for driving the centering rings (6) to move, so that the two centering rings (6) are respectively abutted against or separated from two ends of the shifting fork assembly (1).

7. The fork assembly testing fixture of claim 6, wherein: each positioning mechanism further comprises a fixed seat (7), and the fixed seats (7) are fixedly arranged; the centering ring (6) can be mounted on the fixed seat (7) in a way of moving along the axial direction of the centering ring; the end driving part (5) is movably arranged on the fixed seat (7) and is fixedly connected with the centering ring (6) through a push rod (8).

8. The fork assembly testing fixture of claim 6, wherein: the tops of the two fixed seats (7) are provided with grooves, and the ends, close to each other, of the two grooves are respectively provided with a through mounting hole; the two centering rings (6) are respectively arranged in the two mounting holes in a sliding manner, two ends of each centering ring respectively extend out of the corresponding mounting hole, and one ends, far away from each other, of the centering rings are respectively and fixedly provided with a stop block (9); the two end driving parts (5) are respectively movably arranged on one sides of the two grooves far away from each other.

9. A fork assembly gauge according to any one of claims 1-4, characterized in that: the fork opening positioning device is characterized by further comprising a jacking positioning device, wherein the jacking positioning device is fixedly arranged on one side, far away from the fork opening positioning device, of the end portion positioning device and is used for positioning or loosening the shifting fork assembly (1).

10. The fork assembly testing fixture of claim 9, wherein: the jacking positioning device comprises a jacking driving part (10) and a spring top (11), wherein the spring top (11) is vertically arranged and can be vertically and vertically arranged above the end positioning device; the jacking and pressing driving piece (10) is fixedly arranged above the spring jack (11) and used for driving the spring jack (11) to move up and down so as to press down or loosen the shifting fork assembly (1).

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