Device for detecting service life of automobile gear

Abstract

The utility model relates to the field of automobile gear detection, and discloses a device for detecting the service life of an automobile gear, which comprises an operating platform, one end of the top of the operating platform is rotatably connected with a stand column, the top of the stand column is of a cavity structure, the side wall of the stand column is provided with a fixing mechanism for fixing the automobile gear, and the other end of the top of the operating platform is provided with a connecting plate. A rotating shaft is rotationally connected to the middle of the top of the connecting plate, convex blocks are fixed to the two symmetrical sides of the side wall of the rotating shaft, the side wall of the rotating shaft is sleeved with a load gear, the two symmetrical sides of the top of the load gear are each provided with two grooves in a penetrating mode, the two grooves are matched with the two convex blocks correspondingly, and the two symmetrical sides of the side wall of the rotating shaft are each provided with a limiting mechanism used for limiting the load gear; a first motor is fixed to the bottom of the connecting plate, an output shaft of the first motor is fixed to the rotating shaft, and a first moving mechanism for moving the connecting plate is arranged on the top of the operation table. According to the utility model, automobile gears with different diameters can be detected, equipment does not need to be replaced, and the detection cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive gear testing technology, and in particular to a device for testing the service life of automotive gears. Background Technology

[0002] Automotive gears are key components in the automotive transmission system, responsible for transmitting the power generated by the engine to the wheels. They are generally made of high-strength steel or alloy materials to enhance their wear resistance and load-bearing capacity. In the modern automotive industry, as an important part of the transmission system, the service life of gears directly affects the performance and safety of the entire vehicle. With the continuous development of automotive technology, the performance requirements for gears are becoming increasingly higher. Therefore, effective gear service life testing technology is particularly important.

[0003] Traditional testing equipment can only test gears of specific types or specifications, and cannot be applied to gears of different specifications or types. This limits its application in the diverse automotive manufacturing industry. If different specifications of gears need to be tested on the production line or during maintenance, the testing equipment usually needs to be replaced or adjusted, which increases the complexity and cost of operation. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for detecting the service life of automotive gears.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for detecting the service life of automotive gears includes an operating platform. A column is rotatably connected to one top end of the operating platform. The top of the column has a hollow structure. A fixing mechanism for securing the automotive gear is provided on the side wall of the column. A connecting plate is provided at the other top end of the operating platform. A rotating shaft is rotatably connected to the middle of the top of the connecting plate. Protrusions are fixed to both symmetrical sides of the side wall of the rotating shaft. A load gear is sleeved on the side wall of the rotating shaft. Two grooves are formed through both symmetrical sides of the top of the load gear, and each groove is adapted to one of the two protrusions. A limiting mechanism for restricting the load gear is provided on both symmetrical sides of the side wall of the rotating shaft. A first motor is fixed to the bottom of the connecting plate. The output shaft and rotating shaft of the motor are fixed. The top of the operating table is equipped with a first moving mechanism for moving the connecting plate. An infrared scanner is installed on the top of the operating table, and a second moving mechanism is installed on the top of the operating table for moving the infrared scanner. One end of the top of the operating table is fixed to a support plate, and an ultrasonic flaw detector is fixed to the inner side wall of the support plate. During use, the device can fix automotive gears of different diameters through the fixing mechanism. In conjunction with the first moving mechanism, it drives the matching load gear to move, so that the load gear and the automotive gear are in a meshing state. This operation method can detect automotive gears of different diameters without changing equipment, thus reducing detection costs.

[0007] As a further embodiment of this utility model, the fixing mechanism includes a hydraulic push rod disposed within a cavity and fixed to a column. A circular seat is fixed to the output end of the hydraulic push rod. Multiple arc-shaped plates are fixed in a circular pattern at equal intervals on the outer wall of the column. Multiple first connecting rods are disposed on the outer wall of the column, one end of each first connecting rod being rotatably connected to the column, and the other end of each first connecting rod being rotatably connected to the multiple arc-shaped plates. Multiple second connecting rods are rotatably connected in a circular pattern at equal intervals on the outer wall of the circular seat, and one end of each second connecting rod is rotatably connected to the multiple arc-shaped plates. Driving the hydraulic push rod causes the circular seat to rise or fall, and in conjunction with the multiple first and second connecting rods, causes the multiple arc-shaped plates to move away from or closer to each other, so that the multiple arc-shaped plates are tightly fitted to the inner wall of the automotive gear. This operation method can provide internal support and fixation for different automotive gears without the need to replace equipment, thus reducing testing costs.

[0008] As a further embodiment of this utility model, the limiting mechanism includes limiting posts. A sliding groove is provided on the side wall of the rotating shaft, and the groove has a constricted opening structure. A circular slider is slidably connected to the inner side wall of the sliding groove. The limiting posts are fixed to the surface of the circular slider. A spring is provided inside the sliding groove, and both ends of the spring are fixed to the rotating shaft and the circular slider, respectively. Pressing the two limiting posts causes the two circular sliders to move closer to each other along the inner side walls of the two sliding grooves until the two limiting posts are completely inside the two sliding grooves. At this time, both springs are in a compressed state. A load gear adapted to the vehicle gear to be tested is fitted on the side wall of the rotating shaft, so that both protrusions are embedded in the two grooves. When the load gear contacts the connecting plate, the two limiting posts are no longer restricted. Under the reaction force of the two springs, the two limiting posts are pushed out of the two sliding grooves, limiting the load gear and thus completing the fixing of the load gear. The load gear can be removed by reversing the operation. This operation method facilitates the installation or removal of the load gear.

[0009] As a further embodiment of this utility model, the first moving mechanism includes four support plates, all of which are fixed to the top of the operating table. The four support plates are arranged in pairs, and the same first lead screw is rotatably connected to the inner side wall of each pair of support plates. One end of each of the two first lead screws passes through the outer side wall of the two support plates. A first lead screw nut is fitted onto the side wall of each of the two first lead screws, and the two first lead screw nuts are respectively adapted to the two first lead screws. The two first lead screw nuts are respectively fixed to the bottom ends of the connecting plate. A third motor is fixed to the outer side wall of one of the support plates, and the output shaft of the third motor is fixed to one of the first lead screws. A synchronous pulley is fitted onto one end of each of the two first lead screws. A synchronous belt is provided on the top of the operating table, and the two ends of the synchronous belt are respectively fitted onto the inner side wall of the two synchronous pulleys. The third motor drives one of the first lead screws to rotate, which, together with the synchronous belt and the two synchronous pulleys, drives the other first lead screw to rotate. The two first lead screws rotate simultaneously, which, together with the two first lead screw nuts, drives the connecting plate to move, thereby driving the load gear to gradually approach the vehicle gear to be detected, until the load gear and the vehicle gear mesh.

[0010] As a further embodiment of this utility model, the second moving mechanism includes a U-shaped frame, which is fixed to one end of the top of the operating table and located directly above the column. A sliding rod is fixed to the inner side wall of the U-shaped frame, and a second lead screw is rotatably connected to the inner side wall of the U-shaped frame. The second lead screw and the sliding rod are arranged in parallel. A second lead screw nut is sleeved on the side wall of the sliding rod, and the second lead screw nut and the second lead screw are adapted to each other. The second lead screw nut is fixed to the infrared scanner. A second motor is fixed to the outer side wall of one end of the U-shaped frame, and the output shaft of the second motor is fixed to the second lead screw. The second motor drives the second lead screw to rotate, which in turn drives the infrared scanner to move in conjunction with the sliding rod and the second lead screw nut. During the movement of the infrared scanner, the scanning results of the outline of the car gear to be detected, as well as the position and size parameters of the opening, can be transmitted to the computer program via optical signals to build a model. The inner diameter, outer diameter, and through hole parameters of the car gear in the model are compared with those of a standard gear. If the errors are all within the standard range, the detection result is passed. If any error is outside the standard range, the detection result is failed.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. During use, this device can fix automotive gears of different diameters through a fixing mechanism, and drive the matching load gear to move in conjunction with the first moving mechanism, so that the load gear and the automotive gear are in a meshing state. This operation method can detect automotive gears of different diameters without changing equipment, thus reducing detection costs.

[0013] 2. By pre-cutting two grooves on the top of the load gear to fit with two protrusions, and cooperating with the limiting mechanism, when inspecting automotive gears of different diameters, the load gear that matches it can be quickly replaced. The operation is simple, saves time, and improves work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a device for detecting the service life of automotive gears proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the first moving mechanism of a device for detecting the service life of automotive gears proposed in this utility model.

[0016] Figure 3 This is an exploded view of the rotating shaft, load gear, protrusion, spring, circular slider, and limiting post of a device for detecting the service life of automotive gears proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the fixing mechanism of a device for detecting the service life of automotive gears proposed in this utility model;

[0018] Figure 5 This is a schematic diagram of the second moving mechanism of a device for detecting the service life of automotive gears proposed in this utility model.

[0019] In the diagram: 1. Operating platform; 2. U-shaped frame; 3. Support plate; 4. First lead screw; 5. Synchronous pulley; 6. Synchronous belt; 7. First lead screw nut; 8. Connecting plate; 9. Rotating shaft; 10. First motor; 11. Third motor; 12. Load gear; 13. Groove; 14. Protrusion; 15. Slide groove; 16. Spring; 17. Circular slider; 18. Limiting post; 19. Column; 20. Hydraulic push rod; 21. Arc plate; 22. First connecting rod; 23. Second connecting rod; 24. Circular seat; 25. Slide rod; 26. Second lead screw; 27. Second lead screw nut; 28. Second motor; 29. ​​Infrared scanner; 30. Support plate; 31. Ultrasonic flaw detector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1 - Figure 5A device for testing the service life of automotive gears includes an operating table 1. A column 19 is rotatably connected to one end of the top of the operating table 1. The top of the column 19 has a hollow structure, and a fixing mechanism for fixing the automotive gear is provided on the side wall of the column 19. A connecting plate 8 is provided at the other end of the top of the operating table 1. A rotating shaft 9 is rotatably connected to the middle of the top of the connecting plate 8. Protrusions 14 are fixed symmetrically on both sides of the side wall of the rotating shaft 9. A load gear 12 is sleeved on the side wall of the rotating shaft 9. Two grooves 13 are symmetrically formed on both sides of the top of the load gear 12, and the two grooves 13 are respectively adapted to the two protrusions 14. The two protrusions 14 are embedded in the two grooves 13, ensuring correct meshing between the load gear 12 and the automotive gear to be tested. This design effectively prevents the relative position between the load gear 12 and the automotive gear from shifting during the testing process, thereby ensuring the accuracy of the test. Simultaneously, it allows the load gear 12 to be stably connected to the rotating shaft 9. This forms a good force transmission path. Symmetrical limiting mechanisms for the load gear 12 are provided on both sides of the sidewall of the rotating shaft 9. A first motor 10 is fixed to the bottom of the connecting plate 8, and the output shaft of the first motor 10 is fixed to the rotating shaft 9. A first moving mechanism for moving the connecting plate 8 is provided on the top of the operating table 1. An infrared scanner 29 is provided on the top of the operating table 1, and a second moving mechanism for moving the infrared scanner 29 is provided on the top of the operating table 1. One end of the top of the operating table 1 is fixed to the support plate 30, and an ultrasonic flaw detector 31 is fixed to the inner sidewall of the support plate 30. During use, this device can fix automotive gears of different diameters through the fixing mechanism, and, in conjunction with the first moving mechanism, drive the load gear 12 that is compatible with it to move, so that the load gear 12 and the automotive gear are in a meshing state. This operation method can detect automotive gears of different diameters without changing equipment, reducing detection costs.

[0022] Reference Figure 1 and Figure 4In a preferred embodiment, the fixing mechanism includes a hydraulic push rod 20, which is disposed within the cavity and fixed to the column 19. A circular seat 24 is fixed to the output end of the hydraulic push rod 20. Multiple arc-shaped plates 21 are equidistantly and circularly fixed to the outer wall of the column 19. Multiple first connecting rods 22 are disposed on the outer wall of the column 19, with one end of each first connecting rod 22 rotatably connected to the column 19 and the other end rotatably connected to the arc-shaped plates 21 respectively. Multiple second connecting rods 23 are equidistantly and circularly rotatably connected to the outer wall of the circular seat 24. The first connecting rods 22 and the second connecting rods 23 are capable of... The coordinated movement of multiple arc-shaped plates 21 allows them to move away from or towards each other, ensuring that the multiple arc-shaped plates 21 can fit tightly against the inner wall of the automotive gear. This coordinated movement is key to achieving rapid adjustment. Furthermore, one end of each of the multiple second connecting rods 23 is rotatably connected to the multiple arc-shaped plates 21, driving the hydraulic push rod 20 to raise or lower the circular seat 24. This, in conjunction with the multiple first connecting rods 22 and the second connecting rods 23, causes the multiple arc-shaped plates 21 to move away from or towards each other, ensuring that the multiple arc-shaped plates 21 fit tightly against the inner wall of the automotive gear. This operation method allows for the internal support and fixation of different automotive gears without the need to replace equipment, reducing testing costs.

[0023] Reference Figure 2 and Figure 3 In a preferred embodiment, the limiting mechanism includes a limiting post 18. A groove 15 is formed on the side wall of the rotating shaft 9, and the groove 15 has a constricted opening. A circular slider 17 is slidably connected to the inner side wall of the groove 15. The limiting post 18 is fixed to the surface of the circular slider 17. A spring 16 is provided inside the groove 15. The limiting post 18 can extend out of the groove 15 under the reaction force of the spring 16, thereby limiting and fixing the load gear 12. This design ensures that the load gear 12 will not loosen or shift during rotation and detection, ensuring the stability and reliability of the detection. The two ends of the spring 16 are respectively fixed to the rotating shaft 9 and the circular slider 17. Pressing the two limiting posts 18 causes the two circular sliders 17 to move along the two... The inner walls of the two slides 15 are brought close together until the two limiting posts 18 are completely inside the two slides 15. At this time, the two springs 16 are in a compressed state. A load gear 12 adapted to the automotive gear to be tested is sleeved on the side wall of the rotating shaft 9, so that the two protrusions 14 are embedded in the two grooves 13. When the load gear 12 contacts the connecting plate 8, the two limiting posts 18 are no longer restricted. Under the reaction of the two springs 16, the two limiting posts 18 are pushed out of the two slides 15 to limit the load gear 12, thus completing the fixation of the load gear 12. The load gear 12 can be removed by reversing the operation. This operation method facilitates the installation or removal of the load gear 12.

[0024] Reference Figure 1 and Figure 2 In a preferred embodiment, the first moving mechanism includes four support plates 3, all fixed to the top of the operating table 1. The four support plates 3 are arranged in pairs, and the same first lead screw 4 is rotatably connected to the inner sidewall of each pair of support plates 3. One end of each of the two first lead screws 4 passes through the outer sidewall of one of the two support plates 3. A first lead screw nut 7 is fitted onto the sidewall of each of the two first lead screws 4, and the two first lead screw nuts 7 are respectively adapted to the two first lead screws 4. The two first lead screw nuts 7 are fixed to the bottom ends of the connecting plate 8. A third motor 11 is fixed to the outer sidewall of one of the support plates 3, and the output shaft of the third motor 11 is fixed to one of the first lead screws 4. A synchronous pulley 5 is fitted onto one end of each of the two first lead screws 4. A timing belt 6 is installed on the top of the platform 1, and the two ends of the timing belt 6 are respectively sleeved on the inner sidewalls of two timing pulleys 5. The design of the two timing pulleys 5 and the timing belt 6 allows the two first lead screws 4 to rotate simultaneously, thereby ensuring that the movement of the connecting plate 8 is consistent, ensuring precise contact between the load gear 12 and the vehicle gear to be tested, and avoiding errors caused by uncoordinated movement. The third motor 11 drives one of the first lead screws 4 to rotate, which, together with the timing belt 6 and the two timing pulleys 5, drives the other first lead screw 4 to rotate. The two first lead screws 4 rotate simultaneously, which, together with the two first lead screw nuts 7, drives the connecting plate 8 to move, thereby driving the load gear 12 to gradually approach the vehicle gear to be tested, until the load gear 12 and the vehicle gear mesh.

[0025] Reference Figure 1 and Figure 5 In a preferred embodiment, the second moving mechanism includes a U-shaped frame 2, which is fixed to one end of the top of the operating table 1 and located directly above the column 19. A slide rod 25 is fixed to the inner wall of the U-shaped frame 2, and a second lead screw 26 is rotatably connected to the inner wall of the U-shaped frame 2. The second lead screw 26 and the slide rod 25 are arranged in parallel. A second lead screw nut 27 is sleeved on the side wall of the slide rod 25, and the second lead screw nut 27 is adapted to the second lead screw 26. The second lead screw nut 27 is fixed to the infrared scanner 29. A second motor 28 is fixed to the outer wall of one end of the U-shaped frame 2, and the output of the second motor 28 is... The output shaft and the second lead screw 26 are fixed, and the second motor 28 drives the second lead screw 26 to rotate. In conjunction with the slide rod 25 and the second lead screw nut 27, the infrared scanner 29 is moved. During the movement of the infrared scanner 29, the scanning results of the outline of the car gear to be inspected, as well as the position and size parameters of the opening, are transmitted to the computer program via light signals to build a model. The inner diameter, outer diameter, and through hole parameters of the car gear in the model are compared with those of the standard gear. If the errors are all within the standard range, the inspection result is passed. If any error is outside the standard range, the inspection result is failed.

[0026] The working principle of this embodiment is as follows: During use, the automotive gear to be tested is fitted onto the outer surface of the column 19. The distance between multiple arc-shaped plates 21 is adjusted according to the inner diameter of the automotive gear. During adjustment, the hydraulic push rod 20 drives the circular seat 24 to rise or fall. This, in conjunction with multiple first connecting rods 22 and second connecting rods 23, causes the multiple arc-shaped plates 21 to move away from or closer to each other, ensuring a tight fit between the arc-shaped plates 21 and the inner wall of the automotive gear. This operation method allows for internal support and fixation of different automotive gears without requiring equipment replacement, reducing testing costs. After fixation, the two limiting posts 18 are pressed, causing the two circular sliders 17 to move closer to each other along the inner walls of the two sliding grooves 15. Until the two limiting posts 18 are completely inside the two sliding grooves 15, both springs 16 are in a compressed state. A load gear 12 adapted to the automotive gear to be tested is fitted on the side wall of the rotating shaft 9, so that the two protrusions 14 are embedded in the two grooves 13. When the load gear 12 contacts the connecting plate 8, the two limiting posts 18 are no longer restricted. Under the reaction of the two springs 16, the two limiting posts 18 are pushed out of the two sliding grooves 15 to limit the load gear 12, thus completing the fixation of the load gear 12. The reverse operation can remove the load gear 12. This operation method facilitates the installation or removal of the load gear 12. During testing, the power switch of the third motor 11 is turned on. The third motor 11 drives one of the first lead screws 4 to rotate, which, in conjunction with the timing belt 6 and two timing pulleys 5, drives the other first lead screw 4 to rotate. Both first lead screws 4 rotate simultaneously, which, in conjunction with the two first lead screw nuts 7, drives the connecting plate 8 to move. This, in turn, causes the load gear 12 to gradually approach the vehicle gear to be tested until the load gear 12 meshes with the vehicle gear. At this point, the power switch of the first motor 10 is turned on, driving the first motor 10 to drive the rotating shaft 9 to rotate. This, in conjunction with the two protrusions 14 and the groove 13, drives the load gear 12 to rotate, which in turn drives the vehicle gear to be tested to rotate. During this rotation, the power switch of the second motor 28 is turned on, driving the second motor 28 to drive the second lead screw 26 to rotate, in conjunction with the slide rod 25 and the second... The lead screw nut 27 drives the infrared scanner 29 to move. During the movement of the infrared scanner 29, the scanning results of the outline of the car gear to be inspected, as well as the position and size parameters of the opening, are transmitted to the computer program via light signals to build a model. The inner diameter, outer diameter, and through hole parameters of the car gear in the model are compared with the standard gear. If the errors are all within the standard range, the inspection result is passed. If any error is outside the standard range, the inspection result is failed. At the same time, the power switch of the ultrasonic flaw detector 31 is turned on. The ultrasonic flaw detector 31 is used to detect whether there are cracks, sand holes, air holes, or other hidden defects inside the car gear to be inspected, thereby determining whether the car gear to be inspected is qualified and improving the accuracy of the inspection results.

[0027] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for detecting the service life of a car gear, comprising an operating table (1), characterized in that, The top of the operating table (1) is rotatably connected to a column (19). The top of the column (19) is a hollow structure. The side wall of the column (19) is provided with a fixing mechanism for fixing the car gear. The other end of the top of the operating table (1) is provided with a connecting plate (8). The top middle of the connecting plate (8) is rotatably connected to a rotating shaft (9). The side wall of the rotating shaft (9) is fixed with protrusions (14) on both sides. The side wall of the rotating shaft (9) is fitted with a load gear (12). The top two sides of the load gear (12) are symmetrically provided with two grooves (13), and the two grooves (13) are respectively adapted to the two protrusions (14). The rotating shaft (9) has symmetrical limiting mechanisms on both sides of its sidewall for limiting the load gear (12). The bottom of the connecting plate (8) is fixed with a first motor (10), and the output shaft of the first motor (10) is fixed with the rotating shaft (9). The top of the operating table (1) is provided with a first moving mechanism for moving the connecting plate (8). The top of the operating table (1) is provided with an infrared scanner (29). The top of the operating table (1) is provided with a second moving mechanism for moving the infrared scanner (29). One end of the top of the operating table (1) is fixed to a support plate (30). An ultrasonic flaw detector (31) is fixed to the inner sidewall of the support plate (30).

2. The device for detecting the service life of a gear for an automobile according to claim 1, wherein The fixing mechanism includes a hydraulic push rod (20), which is disposed in the cavity and fixed to the column (19). The output end of the hydraulic push rod (20) is fixed with a circular seat (24). Multiple arc plates (21) are fixed at equal intervals in a circular shape on the outer wall of the column (19). Multiple first connecting rods (22) are disposed on the outer wall of the column (19). One end of each of the multiple first connecting rods (22) is rotatably connected to the column (19), and the other end of each of the multiple first connecting rods (22) is rotatably connected to the multiple arc plates (21). Multiple second connecting rods (23) are rotatably connected at equal intervals in a circular shape on the outer wall of the circular seat (24), and one end of each of the multiple second connecting rods (23) is rotatably connected to the multiple arc plates (21).

3. The device for detecting the service life of a gear for an automobile according to claim 1, wherein The limiting mechanism includes a limiting post (18), a sliding groove (15) is provided on the side wall of the rotating shaft (9), and the sliding groove (15) has a constricted structure. A circular slider (17) is slidably connected to the inner side wall of the sliding groove (15). The limiting post (18) is fixed to the surface of the circular slider (17). A spring (16) is provided inside the sliding groove (15), and the two ends of the spring (16) are fixed to the rotating shaft (9) and the circular slider (17) respectively.

4. The device for detecting the service life of a gear for an automobile according to claim 1, wherein The first moving mechanism includes four support plates (3), all four support plates (3) are fixed to the top of the operating table (1), and the four support plates (3) are in pairs. The inner side wall of each pair of support plates (3) is rotatably connected to the same first lead screw (4), and one end of the two first lead screws (4) passes through the outer side wall of the two support plates (3). The side wall of the two first lead screws (4) is fitted with a first lead screw nut (7), and the two first lead screw nuts (7) are respectively adapted to the two first lead screws (4). The two first lead screw nuts (7) are respectively fixed to the bottom ends of the connecting plate (8). A third motor (11) is fixed to the outer side wall of one of the support plates (3), and the output shaft of the third motor (11) is fixed to one of the first lead screws (4).

5. The device for detecting the service life of a gear for an automobile according to claim 4, wherein One end of each of the two first lead screws (4) is fitted with a synchronous pulley (5), and a synchronous belt (6) is provided on the top of the operating table (1), with the two ends of the synchronous belt (6) respectively fitted on the inner sidewalls of the two synchronous pulleys (5).

6. The device for detecting the service life of automotive gears according to claim 1, characterized in that, The second moving mechanism includes a U-shaped frame (2), which is fixed to one end of the top of the operating table (1) and is located directly above the column (19). A slide rod (25) is fixed to the inner side wall of the U-shaped frame (2). A second lead screw (26) is rotatably connected to the inner side wall of the U-shaped frame (2). The second lead screw (26) and the slide rod (25) are arranged in parallel. A second lead screw nut (27) is sleeved on the side wall of the slide rod (25). The second lead screw nut (27) is adapted to the second lead screw (26). The second lead screw nut (27) is fixed to the infrared scanner (29). A second motor (28) is fixed to the outer side wall of one end of the U-shaped frame (2). The output shaft of the second motor (28) is fixed to the second lead screw (26).

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