Gearbox gearshift mechanism detection device

Abstract

The invention relates to the technical field of new energy automobile gearbox detection, and discloses gearbox gearshift mechanism detection equipment which comprises a detection machine, a clamp and a visual detection module are installed in the detection machine, the clamp comprises two moving clamping jaws, and the contour of each moving clamping jaw is larger than that of a gearbox gearshift mechanism. The internal space of the detection machine is arranged in an L shape, the shifting mechanism is clamped through the moving clamping jaw, the driving source is used for driving the shifting mechanism to rotate circumferentially, the strength detection module and the visual detection module are made to synchronously cover the whole circumferential face, and during strength detection, the telescopic rod periodically abuts against the rotating shifting mechanism along with the cam and is not limited to a single part any more; vulnerable areas such as the periphery of the shifting fork and the cylindrical surface of the connecting shaft are all impacted by loads, full-circumferential-surface shooting and accurate capture of scratches and cracks at deep wrinkles and circumferential stress concentration points are achieved through visual inspection depending on rotation, the quality loopholes of delivery qualification and actual failure are thoroughly solved, and detection is made to be matched with the actual working condition depth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicle gearbox detection, in particular to a gearbox shifting mechanism detection device. BACKGROUND

[0002] At present, some plug-in hybrid drive new energy vehicles will be equipped with gearboxes, and before the new energy vehicle gearbox is shipped, a plurality of detections will be performed, including the detection step of gearbox shifting mechanism detection. In the detection process, the following problems exist.

[0003] In the production process of the gearbox shifting mechanism, strength and appearance detection is the core link to control product quality and avoid subsequent use failure. However, the existing detection technology has many drawbacks and is difficult to meet the complex detection needs of the shifting mechanism.

[0004] Current technology mostly focuses on the detection of partial areas of the shifting mechanism, such as single yoke, specific shaft sections, etc., lacking the ability to cover the entire circumference and all working conditions of the shifting mechanism. The failure risk of the shifting mechanism is not only in fixed positions. Wear on the outer circumference of the yoke, deformation of the cylindrical surface of the connecting shaft, and stress concentration around the shift lever can all cause shifting jamming, power interruption, and other problems. However, traditional detection methods are limited by mechanical structure and detection logic, and can only detect pre-set "key positions" for load application and appearance data collection. Many potential defects in non-pre-set areas, such as cracks in deep wrinkles and circumferential stress concentration points, are easily overlooked, leading to product "factory detection qualification, actual use failure", and quality hidden dangers.

[0005] For large-sized and heavy shifting mechanisms, the "loading-unloading-detection" process of existing detection equipment also has obvious deficiencies. In the loading and unloading process, there is no convenient loading structure suitable for large-sized workpieces, and manual handling is prone to workpiece bumping and positioning deviation, which not only damages the surface precision of the workpiece, but also increases the preparation time before detection. In the detection process, the "power application-data collection" module of the detection mechanism is difficult to meet the full-circumference detection needs of large-sized workpieces. For example, traditional knock-type strength detection can only apply vertical load to the bottom of the workpiece, and cannot simulate the actual working condition of "circumferential cyclic load + complex stress distribution". In terms of operation and maintenance, the equipment structure is complex and lacks modular design, single detection takes a long time, and in the face of batch production, the detection link is prone to become a production capacity bottleneck, slowing down the whole vehicle assembly progress.

[0006] Therefore, the present application provides a gearbox shifting mechanism detection device. SUMMARY

[0007] The present application aims to provide a gearbox shifting mechanism detection device to solve the problems raised in the background art.

[0008] In order to achieve the above object, the present application provides the following technical scheme: a gearbox shifting mechanism detection device, comprising a detection machine, a clamp and a visual detection module are respectively arranged in the detection machine, the clamp comprises two moving clamping jaws, the profile of the moving clamping jaws is larger than the profile of the gearbox shifting mechanism, the internal space of the detection machine is arranged in an L shape, a strength detection module is arranged on the short side of the L shape in the detection machine, the strength detection module and the visual detection module are respectively located on the two sides of the clamp as a center line, the strength detection module comprises a driving source and a plurality of telescopic rods, the telescopic rods are linearly and equidistantly arranged and slidably connected to the inner wall of the detection machine, and the output end of the telescopic rod is matched with the profile shape of the gearbox shifting mechanism.

[0009] Preferably, the moving clamping jaw comprises a circular shell, a rotating chuck and a plurality of inner tooth blocks, the rotating chuck is rotationally connected to the inside of the circular shell, the axial middle part of the rotating chuck forms a retracted disc structure, and the plurality of inner tooth blocks are fixedly connected to the retracted disc surface.

[0010] Preferably, the driving source comprises a motor, a thin shaft and a wide shaft, the motor is fixedly connected to the short side of the L shape in the detection machine, the thin shaft is fixedly connected to the output shaft of the motor and rotationally matched with the inner wall of the detection machine, the wide shaft is rotationally matched with the inner wall of the detection machine, a synchronous belt is transmissionally connected between the wide shaft and the thin shaft, and the wide shaft is located on the side of the detection machine away from the visual detection module.

[0011] Preferably, a plurality of cams are fixedly connected to the surface of the thin shaft, the fixed end of the telescopic rod is always in sliding contact with the outer edge of the cam by gravity, and the surface of the wide shaft is fixedly connected with a rotating gear.

[0012] Preferably, the clamp further comprises a shell, the shell is assembled in the detection machine, a fan gear connecting rod is rotationally connected in the shell, a cylinder one is mounted on the top of the shell, the telescopic shaft of the cylinder one penetrates through the inside of the shell, a connecting plate is fixedly connected to the telescopic shaft of the cylinder one, a push-pull plate is rotationally connected to the two sides of the connecting plate, and the side of the push-pull plate away from the connecting plate is rotationally connected with the corresponding fan gear connecting rod.

[0013] Preferably, the moving clamping jaw further comprises a rack, the rack is fixedly connected to the top of the circular shell and slidably connected to the inside of the shell, and the rack and the fan gear connecting rod are intermeshed.

[0014] Preferably, a through groove is formed in the surface of the circular shell, and the rotating gear is intermeshed with the inner tooth block through the through groove.

[0015] Preferably, a plurality of positioning grooves are formed on the inner wall of the detection machine corresponding to the telescopic rods, and the surfaces of the telescopic rods are fixedly connected with positioning blocks, and the shapes of the positioning blocks and the positioning grooves are matched with each other.

[0016] Preferably, a linear module is installed at the top of the inner cavity of the detection machine, and air cylinders two are symmetrically installed at the sliding ends of the linear module, and the output shafts of the air cylinders two are fixedly connected to the surface of the shell.

[0017] Preferably, a pull-out plate is slidingly connected to the upper part of the L-shaped internal space in the detection machine, an adaptive groove is formed on the surface of the pull-out plate, the adaptive groove and the circular shell are matched with each other, a cross-shaped positioning baseline groove is also formed on the surface of the pull-out plate, an extension section is arranged on the side of the pull-out plate facing the clamp, and the adaptive groove and the positioning baseline groove are arranged outside the extension section.

[0018] Preferably, the visual detection module is electrically connected with an external screen, and the visual detection module displays the detected data parameters on the external screen.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] Full-circumferential cooperative detection, breaking through the local limitation:

[0021] By clamping the gear shifting mechanism with the moving clamp jaw, the gear shifting mechanism is driven to rotate in the circumferential direction by the driving source, so that the strength detection module and the visual detection module synchronously cover the full circumferential surface. During strength detection, the telescopic rods periodically resist the rotating gear shifting mechanism by the cam, so that the detection is no longer limited to a single part, and the outer periphery of the shift fork, the cylindrical surface of the connecting shaft and other vulnerable areas are all subjected to load impact. The visual detection relies on rotation to realize full-circumferential surface shooting, and the scratches and cracks at the wrinkle deep part and the circumferential stress concentration point are accurately captured. The quality loophole of "factory qualified but actual failure" is completely solved, the detection is deeply adapted to the actual working condition, and the qualified rate of the test of the plug-in hybrid electric vehicle transmission machine parts is further increased.

[0022] Adapting to large-size workpieces, optimizing the loading and unloading process:

[0023] For large-size and heavy gear shifting mechanisms, the pull-out plate-clamp linkage loading scheme is designed. The pull-out plate slides outward to create a spacious operation space, the adaptive groove and the cross baseline groove assist in quickly positioning the workpiece, the problems of easy bumping during manual carrying and difficult positioning are solved, the linear module and the air cylinder cooperate to accurately drive the clamp to descend, clamp and reset without manual intervention for complex alignment. Compared with the low-efficiency mode of "hardly inserting workpieces in a narrow space" of the traditional equipment, the time consumption of the loading, positioning and clamping is compressed in this scheme, the surface precision of the workpiece is protected, the risk of equipment collision is avoided, the detection of large-size workpieces is changed from "difficult to perform" to "process-oriented", and the detection of plug-in hybrid electric vehicle transmissions is more efficient.

[0024] Modular clamping structure guarantees full circumference accuracy

[0025] The motion clamping jaw of the present application adopts a "fan gear connecting rod-rack-rotary chuck" modular design: the cylinder drives the connecting plate, which links the fan gear connecting rod through the push-pull plate, and the rack precisely controls the opening and closing of the clamping jaw. The circular shell, the retracted disc and the circumferential tooth block adapt to the profile of the shift mechanism while providing a transmission basis for rotation detection. Compared to the traditional "rigid clamping which is prone to damage and inaccurate positioning" problem, this structure allows large-size workpieces to have both "stable positioning and flexible rotation", providing reliable mechanical support for full-circumference detection, making detection more stable and data more accurate.

[0026] Dynamic strength detection simulates real working conditions:

[0027] The strength detection module discards the traditional "static pressure" logic and uses "cam- telescopic rod + synchronous rotation" dynamic loading: the motor drives the thin shaft to rotate, and the cam pushes the telescopic rod to reciprocate. The wide shaft drives the clamping jaw to rotate through synchronous belts and rotary gears, so that the shift mechanism is continuously exposed to the detection load. This design simulates the complex working conditions of "shift impact and cyclic load superposition" during vehicle driving, and the detection data is more consistent with the actual failure risk. The linear arrangement of the telescopic rods + positioning groove constraint ensures that the load is evenly distributed on the vulnerable area of the circumference, solving the traditional detection "local loading, data distortion" problem, and upgrading the strength detection from "formalization" to "working condition restoration".

[0028] Full-circumference adaptive detection enhances practical value:

[0029] The motion clamping jaw clamps the shift mechanism, and the drive source drives it to rotate circumferentially. The telescopic rods in the strength detection module can be linearly and equidistantly arranged due to the sliding fit with the inner wall of the detection machine. This sliding design makes the telescopic rods easy to disassemble and replace quickly without complex procedures if damaged, reducing maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a front view of the main structure of the present application;

[0031] Figure 2 is a plan view of the cooperation between the clamp and the visual detection module of the present application;

[0032] Figure 3 is a sectional view of the main structure of the present application;

[0033] Figure 4 is an exploded view of the main structure of the present application;

[0034] Figure 5 is a partial view of the cooperation between the motion clamping jaw and the rotary gear of the present application;

[0035] Figure 6 Figure 7 is a partial perspective view of the positioning groove and the positioning block of the present application;

[0036] Figure 7 Figure 6 is a perspective view of the enlarged structure at A in the present application; Figure 6

[0037] Figure 8 Figure 5 is a sectional perspective view of the clamp of the present application;

[0038] Figure 9 Figure 4 is a rear perspective view of the main body structure of the present application;

[0039] Figure 10 Figure 3 is a perspective view of the pull-out plate of the present application.

[0040] In the figure:

[0041] 1, detection machine; 11, pull-out plate; 111, adaptive groove; 112, positioning base groove; 12, linear module; 13, cylinder two; 2, clamp; 21, moving clamp jaw; 211, circular shell; 2111, through groove; 212, rotating chuck; 213, inner tooth block; 214, rack; 22, shell; 23, sector gear connecting rod; 24, cylinder one; 25, connecting plate; 26, push-pull plate; 3, visual detection module; 4, strength detection module; 41, driving source; 411, motor; 412, thin shaft; 413, wide shaft; 42, rotating gear; 43, cam; 44, telescopic rod; 441, positioning groove; 442, positioning block. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0043] It should be noted that the visual detection module 3 only provides visual detection of the gearbox shift mechanism function, the linear module 12 and the cylinder two 13 only provide the function of driving the displacement of the clamp 2, and the working principle and specific structure of the above structure are prior art. Therefore, in view of the universality of the above structure, the specific principle will not be described in detail.

[0044] Please refer to Figures 1 to 10 , the present application provides an embodiment:

[0045] ​A kind of gearbox shift mechanism detection equipment, including detection machine 1, fixture 2 and visual detection module 3 are respectively installed in detection machine 1, fixture 2 includes two movement clamping jaw 21, the profile of movement clamping jaw 21 is greater than the profile of gearbox shift mechanism, the inside space of detection machine 1 is arranged in L type, the short side of L type in detection machine 1 is equipped with strength detection module 4, with fixture 2 as center line, strength detection module 4 and visual detection module 3 are respectively located at its two sides, strength detection module 4 includes drive source 41 and several telescopic rods 44, telescopic rod 44 is linear equidistant arrangement and is slidably connected on the inner wall of detection machine 1, the output end of telescopic rod 44 and the profile shape of gearbox shift mechanism are mutually adapted.

[0046] It should be noted that the moving clamp jaw 21 comprises a circular shell 211, a rotating chuck 212 and a plurality of inner tooth blocks 213, the rotating chuck 212 is rotationally connected to the inside of the circular shell 211, the axial middle part of the rotating chuck 212 forms a retracted disc structure, and the plurality of inner tooth blocks 213 are fixedly connected to the retracted disc surface. The driving source 41 comprises a motor 411, a thin shaft 412 and a wide shaft 413, the motor 411 is fixedly connected to the short side of the L-shaped detection machine 1, the thin shaft 412 is fixedly connected to the output shaft of the motor 411, and the thin shaft 412 is rotationally fitted on the inner wall of the detection machine 1. The wide shaft 413 is rotationally fitted on the inner wall of the detection machine 1, and the wide shaft 413 and the thin shaft 412 are connected by a synchronous belt through a synchronous wheel transmission. The wide shaft 413 is located on the side of the detection machine 1 away from the vision detection module 3, the surface of the thin shaft 412 is fixedly connected with a plurality of cams 43, the fixed end of the telescopic rod 44 is always in sliding contact with the outer edge of the cam 43 by gravity, the surface of the wide shaft 413 is fixedly connected with a rotating gear 42, and the clamp 2 further comprises a shell 22. The shell 22 is assembled in the detection machine 1, and the inside of the shell 22 is symmetrically rotationally connected with a sector gear connecting rod 23. The top of the shell 22 is provided with a cylinder one 24, and the telescopic shaft of the cylinder one 24 penetrates the inside of the shell 22. The telescopic shaft of the cylinder one 24 is fixedly connected with a connecting plate 25, the two sides of the connecting plate 25 are rotationally connected with a push-pull plate 26, and the side of the push-pull plate 26 away from the connecting plate 25 is rotationally connected with the corresponding sector gear connecting rod 23. The circular part of the sector gear connecting rod 23 is rotationally connected to the inner side wall of the shell 22. The moving clamp jaw 21 further comprises a rack 214, which is fixedly connected to the top of the circular shell 211 and is slidingly connected to the inside of the shell 22. The rack 214 and the sector gear connecting rod 23 are in mesh with each other. A through groove 2111 is formed in the surface of the circular shell 211, and the rotating gear 42 is in mesh with the inner tooth block 213 through the through groove 2111. A plurality of positioning grooves 441 are formed in the inner wall of the detection machine 1 corresponding to the telescopic rod 44. The surface of the telescopic rod 44 is fixedly connected with a positioning block 442. The shape of the positioning block 442 is matched with the shape of the positioning groove 441. The inner cavity of the detection machine 1 is provided with a linear module 12, and the sliding end of the linear module 12 is symmetrically provided with a cylinder two 13. The output shaft of the cylinder two 13 is fixedly connected to the surface of the shell 22. The upper part of the L-shaped inner space in the detection machine 1 is slidingly connected with a pull-out plate 11. The surface of the pull-out plate 11 is provided with an adaptive groove 111, which is matched with the shape of the circular shell 211. The surface of the pull-out plate 11 is also provided with a cross-shaped positioning baseline groove 112. The side of the pull-out plate 11 facing the clamp 2 is provided with an extension section, and the adaptive groove 111 and the positioning baseline groove 112 are arranged in the area outside the extension section. The vision detection module 3 is electrically connected with an external screen, and the vision detection module 3 displays the detected data parameters on the external screen.

[0047] Specifically, the operator first pulls out the pull-out plate 11 on the detection machine 1, and uses the slidable design of the pull-out plate 11 to create a spacious operating space.

[0048] Due to the large size and heavy weight of the gearbox shifting mechanism, directly placing it in the narrow space inside the detection machine 1 can cause positioning deviation, inconvenience in operation, and even damage to the equipment / gearbox shifting mechanism. The cross-shaped positioning baseline slot 112 can assist the operator in quickly aligning the gearbox shifting mechanism based on the baseline, achieving rough positioning, reducing the difficulty of subsequent precise clamping of the clamp 2, and solving the pain point of difficult and convenient feeding and preliminary positioning of large-size and heavy gearbox shifting mechanisms.

[0049] It should be noted that if the pull-out plate 11 is not used to place the gearbox shifting mechanism first, the large-size and heavy gearbox shifting mechanism is directly placed inside the detection machine 1, and the operator is difficult to accurately control the placement position due to the limited internal operating space of the equipment, which can cause the gearbox shifting mechanism to collide with the clamp 2 and the inner wall of the equipment. Not only is the positioning time-consuming, but it can also damage the surface of the gearbox shifting mechanism or affect the accuracy of the equipment. Therefore, the feeding and positioning design of the pull-out plate 11 is a necessary prerequisite for the detection of large-size and heavy gearbox shifting mechanisms.

[0050] After completing the preliminary placement of the gearbox shifting mechanism, the linear module 12 is started, the cylinder two 13 of the linear module 12 and the clamp 2 connected thereto are moved as a whole, and the clamp 2 is accurately moved to above the pull-out plate 11 (corresponding to the area above the positioning baseline slot 112).

[0051] Subsequently, the cylinder two 13 is driven to extend, and the extension shaft of the cylinder two 13 drives the clamp 2 to descend, so that the moving jaw 21 of the clamp 2 approaches the gearbox shifting mechanism, preparing for the subsequent clamping action.

[0052] Subsequently, the operator drives the extension shaft of the cylinder one 24 to rise, the extension shaft of the cylinder one 24 drives the connecting plate 25 to move upwards, the push-pull plate 26 connected to the connecting plate 25 on both sides rotates and follows, the push-pull plate 26 pushes the sector gear connecting rod 23 to rotate, and since the sector gear connecting rod 23 is engaged with the rack 214 at the top of the moving jaw 21, when the sector gear connecting rod 23 rotates, the rack 214 is driven to move the circular shell 211 of the moving jaw 21 towards the middle, so that the moving jaw 21 clamps the gearbox shifting mechanism.

[0053] After clamping is completed, the linear module 12 and the cylinder two 13 are driven to cooperate and move, driving the clamp 2 and the clamped gearbox shifting mechanism to reset, so that the clamp 2 falls into the space of the L-shaped long side of the detection machine 1.

[0054] It should be noted that the spatial layout allows the strength detection module 4 and the visual detection module 3 to be symmetrically distributed with the clamp 2 as the center, which not only reasonably utilizes the internal space of the equipment, but also creates conditions for subsequent full circumferential surface detection, and ensures the orderly collaborative work of the functional modules of the equipment.

[0055] Subsequently, the motor 411 of the strength detection module 4 is started, and the motor 411 drives the thin shaft 412 to rotate, and the cam 43 on the surface of the thin shaft 412 rotates synchronously.

[0056] The thin shaft 412 drives the wide shaft 413 to rotate through the synchronous belt, but the wide shaft 413 rotates at a relatively slow speed due to the transmission ratio design of the wide shaft 413 and the thin shaft 412, and the rotating gear 42 on the surface of the wide shaft 413 rotates accordingly.

[0057] The rotating gear 42 is engaged with the internal tooth block 213 on the rotating chuck 212 through the through groove 2111 of the moving jaw 21, drives the rotating chuck 212 and the clamped gearshift mechanism to rotate synchronously, and realizes the dynamic switching of the circumferential surface of the gearshift mechanism.

[0058] In the above process, when the thin shaft 412 rotates, the fixed end of the telescopic rod 44 is constantly pushed by the cam 43 on the surface of the thin shaft 412, the telescopic rod 44 always slides against the outer edge of the cam 43 by relying on gravity, and the contour change of the cam 43 converts the rotary motion into the linear reciprocating motion of the telescopic rod 44, so that the output end of the telescopic rod 44 periodically impacts the circumferential surface of the gearshift mechanism.

[0059] Since the output end of the telescopic rod 44 is matched with the contour of the gearshift mechanism and is linearly and equidistantly arranged, it can fully cover the vulnerable areas of the circumferential surface of the gearshift mechanism (such as the outer circumference of the shift fork and the cylindrical surface of the connecting shaft).

[0060] At the same time, the positioning groove 441 on the inner wall of the detection machine 1 is matched with the positioning block 442 on the surface of the telescopic rod 44, which can constrain the movement track of the telescopic rod 44 and avoid the influence of its swing on the detection accuracy, so as to simulate the strength test of the gearshift mechanism under the cyclic load in the actual working condition and solve the limitation of the traditional detection which can only detect locally.

[0061] Therefore, under the driving of the motor 411, the gearshift mechanism rotates with the rotating chuck 212, realizes that different areas of the circumferential surface are exposed in the impact path of the telescopic rod 44 in turn, and the telescopic rod 44 continuously reciprocates under the action of the cam 43, so that all areas of the circumferential surface of the gearshift mechanism can be subjected to strength detection, covering the full circumferential range that cannot be reached by traditional detection, improving the comprehensiveness and accuracy of detection, and adapting to the demand for full detection of the vulnerable area of the circumferential surface of the large-size gearshift mechanism.

[0062] More importantly, during the strength detection process, the visual detection module 3 continuously works, and since the gearbox shifting mechanism rotates with the rotating chuck 212, the visual detection module 3 can take pictures of the rotating gearbox shifting mechanism from all around, compared with the visual detection blind area (such as the complex structure of the back and side of the gearbox shifting mechanism) that is prone to occur in the traditional fixed visual detection, under the rotating cooperation mode, each area of the surface of the gearbox shifting mechanism enters the visual detection range in turn, and the visual detection module 3 can capture scratches, deformation, cracks and other defects on the surface of the gearbox shifting mechanism, solving the problem of incomplete visual detection of the large gearbox shifting mechanism due to its complex structure and limited detection angle.

[0063] Finally, the visual detection module 3 synchronously transmits the collected image data to the external screen for display, and the operator can monitor the detection process in real time, judge the appearance defects of the gearbox shifting mechanism according to the visual image, and evaluate the strength performance of the gearbox shifting mechanism in combination with the strength detection data, forming a complete detection closed loop from the feeding, clamping and full-circle strength detection of the gearbox shifting mechanism to the visual defect identification, meeting the demand for comprehensive and accurate detection of the large gearbox shifting mechanism, and solving the problem of single detection function and incomplete data feedback of the traditional detection.

[0064] It should be noted that in this text, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the term "includes" "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0065] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A gearbox shift mechanism detection device, comprising a detection machine (1), a clamp (2) and a visual detection module (3) are respectively installed in the detection machine (1), characterized in that: The fixture (2) comprises two moving clamps (21), the profile of the moving clamps (21) is larger than the profile of the gear shift mechanism, the internal space of the detection machine (1) is arranged in an L shape, the short side of the L-shaped internal space of the detection machine (1) is provided with a strength detection module (4), the strength detection module (4) and the visual detection module (3) are located on the two sides of the fixture (2) as the center line, the strength detection module (4) comprises a driving source (41) and a plurality of telescopic rods (44), the telescopic rods (44) are linearly and equidistantly arranged and are slidably connected to the inner wall of the detection machine (1), and the output end of the telescopic rod (44) is matched with the profile shape of the gear shift mechanism.

2. A gear shift mechanism detection apparatus for a gearbox according to claim 1, characterized in that: The moving clamp (21) comprises a circular shell (211), a rotating chuck (212) and a plurality of inner tooth blocks (213), the rotating chuck (212) is rotatably connected to the inside of the circular shell (211), the axial middle part of the rotating chuck (212) is formed into an inner shrink disc structure, and the plurality of inner tooth blocks (213) are fixedly connected to the inner shrink disc surface.

3. A gearbox shift mechanism detection apparatus according to claim 2, characterised in that: The driving source (41) comprises a motor (411), a thin shaft (412) and a wide shaft (413), the motor (411) is fixedly connected to the short side of the L-shaped internal space of the detection machine (1), the thin shaft (412) is fixedly connected to the output shaft of the motor (411) and is rotatably matched with the inner wall of the detection machine (1), the wide shaft (413) is rotatably matched with the inner wall of the detection machine (1), and a synchronous belt is transmissionally connected between the wide shaft (413) and the thin shaft (412), and the wide shaft (413) is located on the side of the detection machine (1) away from the visual detection module (3).

4. A gearbox shift mechanism detection apparatus according to claim 3, characterised in that: A plurality of cams (43) are fixedly connected to the surface of the thin shaft (412), the fixed end of the telescopic rod (44) is always slidably abutted against the outer edge of the cam (43) by gravity, and the surface of the wide shaft (413) is fixedly connected with a rotating gear (42).

5. A gear shift mechanism detection apparatus for a gearbox according to claim 1, characterized in that: The fixture (2) further comprises a shell (22), the shell (22) is assembled in the detection machine (1), a sector gear connecting rod (23) is symmetrically and rotatably connected in the shell (22), a cylinder one (24) is mounted on the top of the shell (22), and the telescopic shaft of the cylinder one (24) penetrates the inside of the shell (22), a connecting plate (25) is fixedly connected to the telescopic shaft of the cylinder one (24), push-pull plates (26) are rotatably connected to the two sides of the connecting plate (25), and the side of the push-pull plate (26) away from the connecting plate (25) is rotatably connected with the corresponding sector gear connecting rod (23).

6. A gearbox shift mechanism detection apparatus according to claim 5, characterised in that: The moving clamp (21) further comprises a rack (214), the rack (214) is fixedly connected to the top of the circular shell (211), and the rack (214) is slidably connected in the shell (22); the rack (214) is meshed with the sector gear connecting rod (23).

7. A gear shift mechanism detection apparatus for a gearbox according to claim 4, characterized in that: A through groove (2111) is formed in the surface of the circular shell (211), and the rotating gear (42) is meshed with the inner tooth block (213) through the through groove (2111).

8. A gear shift mechanism detection apparatus for a gearbox according to claim 1, characterized in that: A plurality of positioning grooves (441) are formed on the inner wall of the detection machine (1) corresponding to the telescopic rods (44), and the surfaces of the telescopic rods (44) are fixedly connected with positioning blocks (442), which are matched with the shapes of the positioning grooves (441).

9. A gear shift mechanism detection apparatus for a gearbox according to claim 5, characterized in that: A linear module (12) is installed on the top of the inner cavity of the detection machine (1), and a cylinder two (13) is symmetrically installed on the sliding end of the linear module (12), and the output shaft of the cylinder two (13) is fixedly connected to the surface of the shell (22).

10. A gear shift mechanism detection apparatus for a gearbox according to claim 1, characterized in that: A pull-out plate (11) is slidingly connected to the upper part of the L-shaped inner space in the detection machine (1), an adaptive groove (111) is formed on the surface of the pull-out plate (11), which is matched with the shape of the circular shell (211), a cross-shaped positioning baseline groove (112) is also formed on the surface of the pull-out plate (11), an extension section is arranged on the side of the pull-out plate (11) facing the clamp (2), and the adaptive groove (111) and the positioning baseline groove (112) are arranged outside the extension section.

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