Compressive strength detection device for automobile gear parts

Abstract

The invention discloses an automobile gear fitting compressive strength detection device, and relates to the technical field of compressive strength detection, the automobile gear fitting compressive strength detection device comprises a bottom plate and a moving shaft rotatably arranged on the bottom plate; the fixed shaft is slidably mounted on the bottom plate through a sliding plate; the linear driving structure is mounted between the sliding plate and the bottom plate; the base is installed on the bottom plate through a support, and a cavity is formed in the base; the pressure regulating gear is rotationally arranged in the base and is coaxially and fixedly arranged with the movable shaft; the adjusting rack is meshed with the pressure adjusting gear and is mounted in the cavity in a sliding manner; the pressure regulating cavity is arranged on the base and is communicated with the cavity; the pressure regulating plate is elastically and slidably arranged in the pressure regulating cavity through an elastic piece; the driving part is used for intermittently driving the pressure regulating plate to rise; pressure fluctuation of the cavity is regulated through vertical reciprocating motion of the pressure regulating plate, stress cycle characteristics of an automobile transmission gear under different working conditions are simulated, a result is closer to a real service state through dynamic detection, and the problem that static limit testing and dynamic requirements are disjointed is solved.

Description

Technical Field

[0001] This invention relates to the field of compressive strength testing technology, specifically to a device for testing the compressive strength of automotive gear parts. Background Technology

[0002] In the field of mechanical transmission, gears are core transmission components, and the strength of their teeth directly determines the reliability and service life of the transmission system. Traditional gear tooth strength testing methods generally adopt a constant pressure increasing loading mode - by gradually or continuously increasing the pressure value (such as continuous pressurization by hydraulic / pneumatic loading devices) until the teeth show failure characteristics (such as cracks or fractures), and the ultimate pressure value is used as the basis for strength evaluation.

[0003] While this testing logic can determine the static load limit of gears, it has significant limitations. Firstly, in actual operation, the loads on gears exhibit dynamic fluctuations. Taking automotive transmission gears as an example, torque increases sharply during vehicle acceleration, impact loads change abruptly during gear shifts, and loads decrease during idling, forming an alternating "high-low-high" stress cycle. Constant pressure increase testing only simulates a unidirectional pressure increase process and cannot reproduce the key characteristics of "pressure fluctuations and stress alternation" in actual operating conditions, leading to discrepancies between the test results and the actual service conditions. Secondly, during constant pressure increase, micro-defects inside the gear teeth (such as casting porosity and heat treatment cracks) experience stress concentration due to continuous pressure increase. However, a single pressure increase path tends to fix the defect propagation path, potentially masking complex failure modes under multi-directional stress. For example, in actual operating conditions, alternating loads may induce lateral expansion of defects, while constant pressure increase testing may underestimate their harmfulness due to the single expansion of defects along the pressure direction. Summary of the Invention

[0004] The technical solution of this invention is to provide a device for testing the compressive strength of automotive gear components. By adjusting the pressure fluctuation of the cavity through the reciprocating motion of the pressure regulating plate, the stress cycle characteristics of automotive transmission gears under different working conditions are simulated. Dynamic testing makes the results closer to the actual service state, solving the problem of the disconnect between static limit testing and dynamic requirements.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for testing the compressive strength of automotive gear parts, comprising a base plate;

[0006] The rotating shaft is mounted on the base plate.

[0007] Fixed axis, slidably mounted on the base plate via a sliding plate;

[0008] A linear drive structure is installed between the slide plate and the base plate to drive the fixed axis to move relative to the base plate and adjust the distance between the fixed axis and the moving axis;

[0009] The base is mounted on the base plate by a bracket and has an internal cavity.

[0010] The pressure adjusting gear is rotatably mounted inside the base and is fixed coaxially with the moving shaft;

[0011] The adjusting rack meshes with the pressure adjusting gear and is slidably mounted in the cavity;

[0012] The pressure regulating chamber is located on the base and is connected to the cavity body;

[0013] The pressure regulating plate is elastically slidably disposed in the pressure regulating chamber via an elastic element;

[0014] The drive unit is used to intermittently drive the pressure regulating plate to rise.

[0015] As a further aspect of the present invention, the driving unit includes:

[0016] The pressure regulating cam is located at the bottom of the pressure regulating chamber.

[0017] The pressure adjusting shaft is fixedly installed at the bottom of the pressure adjusting plate and abuts against the concave and convex surfaces of the pressure adjusting cam;

[0018] The voltage regulating motor is mounted on the base plate via a bracket and is used to drive the voltage regulating cam to rotate.

[0019] As a further aspect of the present invention, the linear driving structure includes:

[0020] The telescopic rod is mounted on the base plate at its fixed end via a bracket.

[0021] The fine-tuning rod is threaded onto the free end of the telescopic rod.

[0022] The fine-tuning motor is fixedly mounted on the slide plate via a connecting bracket, and the output shaft of the fine-tuning motor is fixed to the fine-tuning rod.

[0023] As a further embodiment of the present invention, both the sliding plate and the base plate are equipped with sliding sleeves and lifting motors. Each sliding sleeve is slidably provided with a sliding rod. A top plate and a support plate are respectively installed at both ends of the sliding rod. Both the top plate and the support plate are provided with clearance grooves. The output shaft of the lifting motor is fixedly installed with the support plate.

[0024] As a further embodiment of the present invention, each of the trays is fixedly installed with a limiting sleeve, and a limiting shaft is elastically slidably provided inside the limiting sleeve by an elastic element.

[0025] As a further embodiment of the present invention, it also includes a testing cabinet, the base plate being installed inside the testing cabinet, and the testing cabinet also being provided with a conveying structure and a material handling structure, the conveying structure being used for intermittent conveying of workpieces, and the material handling structure being used for reciprocating transfer of workpieces between the conveying structure and the base plate.

[0026] As a further embodiment of the present invention, the material handling structure includes a frame, a mounting plate slidably mounted on the frame via a track, a clamping part disposed below the mounting plate, and a lifting structure installed between the clamping part and the mounting plate.

[0027] As a further embodiment of the present invention, the clamping part includes a clamping plate, and telescopic motors are provided at both ends of the bottom of the clamping plate. A clamping component is installed at the output end of the telescopic motor. A connecting plate is slidably provided on the clamping plate through an elastic component.

[0028] As a further embodiment of the present invention, the detection cabinet is equipped with a display panel, a controller, and an alarm device.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. This invention regulates the pressure fluctuation of the cavity by adjusting the reciprocating motion of the pressure regulating plate, simulating the "high-low-high" stress cycle characteristics of automotive transmission gears under different operating conditions such as acceleration, shifting, and idling. For example, when the pressure regulating plate rises, the cavity pressure increases, corresponding to a sudden increase in torque during acceleration, and when it falls, the pressure decreases, corresponding to a drop in idle load. Compared with traditional constant boost, which only simulates the unidirectional pressure increase process, dynamic detection makes the test results close to the actual service state of the gears, solving the core problem of the disconnect between static limit testing and dynamic requirements.

[0031] 2. Fluctuating alternating pressure induces multi-directional stress concentration in micro-defects within the teeth (such as casting porosity and heat treatment cracks), driving the defects to expand in multiple dimensions, including laterally and longitudinally. For example, the lateral expansion of defects induced by alternating loads in actual working conditions may be underestimated in traditional constant pressure testing due to the single pressure path leading to a single expansion of defects along the pressure direction. However, this invention, by inducing complex failure modes through pressure fluctuations, allows for the quantitative assessment of such risks, significantly improving the detection sensitivity of early defects such as microcracks and porosity. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the overall internal structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the base plate and its connection structure of the present invention. Figure 1 ;

[0036] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0037] Figure 5 This is a schematic diagram of the base plate and its connection structure of the present invention. Figure 2 ;

[0038] Figure 6 This is a schematic diagram of the base and its connection structure of the present invention;

[0039] Figure 7 This is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0040] Figure 8 This is an exploded structural diagram of the base and its connection relationship of the present invention;

[0041] Figure 9 This is a schematic diagram of the skateboard and its connection structure according to the present invention;

[0042] Figure 10 This is a schematic diagram of the overall structure of the material handling and unloading structure of the present invention;

[0043] Figure 11 This is a schematic diagram of the overall exploded structure of the material handling and unloading structure of the present invention;

[0044] The attached diagram lists the components represented by each number as follows:

[0045] 1. Testing cabinet; 10. Base plate; 11. Moving shaft; 12. Fixed shaft; 13. Base; 14. Bracket; 15. Cavity; 16. Pressure adjusting gear; 17. Adjusting rack; 18. Pressure adjusting chamber; 19. Pressure adjusting plate; 2. Drive unit; 21. Pressure adjusting cam; 22. Pressure adjusting shaft; 23. Pressure adjusting motor; 3. Linear drive structure; 31. Telescopic rod; 32. Fine-tuning rod; 33. Fine-tuning motor; 34. Connecting frame; 4. Sliding sleeve; 4 1. Lifting motor; 42. Slide rod; 43. Top plate; 44. Support plate; 45. Clearance groove; 51. Limit sleeve; 52. Limit shaft; 6. Unloading structure; 61. Frame; 62. Mounting plate; 63. Lifting structure; 64. Clamping plate; 7. Clamping part; 71. Telescopic motor; 72. Clamping component; 73. Connecting plate; 8. Display panel; 81. Controller; 82. Alarm device; 83. Conveying structure; 9. Slide plate. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1-11 The present invention provides a technical solution: a device for testing the compressive strength of automotive gear parts, comprising a base plate 10.

[0048] The rotating shaft 11 is rotatably mounted on the base plate 10; the gear to be tested is mounted on the rotating shaft 11.

[0049] The fixed shaft 12 is slidably mounted on the base plate 10 via the slide plate 9; it is used to mount the pressure measuring element that matches the gear to be tested; that is, the testing gear that meshes with the gear to be tested is mounted on the fixed shaft 12.

[0050] The linear drive structure 3, installed between the slide plate 9 and the base plate 10, is used to drive the fixed shaft 12 to move relative to the base plate 10, adjusting the distance between the fixed shaft 12 and the moving shaft 11. The linear drive structure 3, through the slide plate 9, drives the fixed shaft 12 to move relative to the moving shaft 11, adjusting the distance between them. This facilitates the installation and removal of the detection gear and the gear to be tested, avoiding mutual interference and reducing the difficulty of assembly and disassembly. Furthermore, adjusting the distance between the fixed shaft 12 and the moving shaft 11 can also adjust the overlap coefficient of the detection gear and the gear to be tested, used to measure the compressive strength of gears with different overlap coefficients. This allows for finding a range with uniform load distribution, significantly reducing the risk of tooth surface fatigue, crushing, or fracture, and extending gear life.

[0051] The base 13 is mounted on the base plate 10 via the bracket 14, and has a cavity 15 inside;

[0052] The pressure adjusting gear 16 is rotatably mounted in the base 13 and is coaxially fixed with the moving shaft 11;

[0053] The adjusting rack 17 meshes with the pressure adjusting gear 16 and is slidably installed in the cavity 15;

[0054] The pressure regulating chamber 18 is mounted on the base 13 and is connected to the cavity 15;

[0055] The pressure regulating plate 19 is elastically slidably disposed in the pressure regulating cavity 18 via an elastic element;

[0056] Drive unit 2 is used to intermittently drive the pressure regulating plate 19 to rise;

[0057] Initial loading phase

[0058] After the precision installation of the testing gear and the gear to be tested is completed, gas is injected into the cavity 15 through the reserved gas valve. As the gas continues to enter, the pressure inside the cavity 15 gradually increases, pushing the sliding adjustment rack 17 to produce displacement. This displacement is converted into the rotation of the gear to be tested through the transmission chain of the pressure adjusting gear 16-moving shaft 11, until its teeth rigidly collide with the teeth of the testing gear. At this time, the gear to be tested stops rotating and enters the load-bearing state.

[0059] Fluctuation pressure control

[0060] When the pressure regulating plate 19 rises (power source from drive unit 2), the volume connecting the pressure regulating chamber 18 and the cavity 15 decreases, and the pressure inside the cavity 15 relatively increases; when the pressure regulating plate 19 falls (power source from the elastic element and the pressure of the gas inside the cavity 15), the volume connecting increases, and the pressure relatively decreases; this pressure fluctuation is converted into an alternating load borne by the teeth of the gear under test through the transmission path of the adjusting rack 17, the pressure regulating gear 16, and the fixed shaft 12.

[0061] In summary, by controlling the pressure regulating plate 19 to move up and down reciprocally, the load on the gear teeth under test can fluctuate within a certain range. This is used to simulate the "high-low-high" stress cycle characteristics of automotive transmission gears during acceleration (sudden increase in torque), shifting (sudden change in impact load), and idling (load drop). Applying fluctuating pressure can better simulate this dynamic load condition, making the test results closer to the actual stress state of the gear in actual use, thereby more accurately evaluating the strength performance of the gear teeth under actual working conditions.

[0062] The pressure fluctuation of the cavity 15 is regulated by the reciprocating motion of the pressure regulating plate 19, simulating the "high-low-high" stress cycle characteristics of automotive transmission gears under different working conditions such as acceleration, shifting, and idling. For example, when the pressure regulating plate 19 rises, the pressure in the cavity 15 increases, corresponding to a sudden increase in torque during acceleration, and when it falls, the pressure decreases, corresponding to a drop in idle load. Compared with traditional constant boost, which only simulates the unidirectional pressure increase process, this embodiment makes the test results close to the actual service state of the gears, solving the core problem of the disconnect between static limit testing and dynamic requirements.

[0063] Fluctuating alternating pressure induces multi-directional stress concentration in micro-defects within the tooth (such as casting porosity and heat treatment cracks), driving the defects to expand in multiple dimensions, including laterally and longitudinally. For example, in actual working conditions, the lateral expansion of defects induced by alternating loads may be underestimated in traditional constant pressure testing due to the single pressure path leading to unidirectional expansion along the pressure direction. However, this embodiment quantifies and assesses such risks by inducing complex failure modes through pressure fluctuations, significantly improving the detection sensitivity of early defects such as microcracks and porosity.

[0064] As a further aspect of the present invention, the driving unit 2 includes:

[0065] The pressure regulating cam 21 is rotatably located at the bottom of the pressure regulating chamber 18.

[0066] The pressure adjusting shaft 22 is fixedly installed at the bottom of the pressure adjusting plate 19 and abuts against the concave and convex surfaces of the pressure adjusting cam 21;

[0067] The voltage regulating motor 23 is mounted on the base plate 10 via the bracket 14 and is used to drive the voltage regulating cam 21 to rotate.

[0068] The pressure regulating motor 23 drives the pressure regulating cam 21 to rotate through the output shaft. When the convex surface rotates to contact the pressure regulating shaft 22, the convex surface profile pushes the pressure regulating shaft 22 to rise vertically, and simultaneously drives the pressure regulating plate 19 to move upward. The volume of the pressure regulating chamber 18 and the cavity 15 decreases, and the pressure in the cavity 15 increases due to volume compression. When the concave surface rotates to contact the pressure regulating shaft 22, the pressure regulating plate 19 descends under the combined action of the gas pressure in the cavity 15 and the elastic element. The pressure regulating shaft 22 then falls back and re-abuts the top of the cam, forming a reciprocating cycle of "rising-falling".

[0069] Adjusting the speed of the pressure regulating motor 23 can change the rotation speed of the pressure regulating cam 21, thereby controlling the pressure fluctuation frequency (such as simulating the torque change rate during car acceleration / deceleration); the profile design of the convex and concave surfaces of the pressure regulating cam 21 (such as involute or constant velocity spiral) can optimize the linearity of pressure rise / fall, making the pressure fluctuation curve more in line with actual working conditions (such as the transient characteristics of shifting impact load).

[0070] As a further aspect of the present invention, the linear drive structure 3 includes:

[0071] The telescopic rod 31 is fixedly mounted on the base plate 10 via a bracket 14.

[0072] The fine-tuning rod 32 is threaded onto the free end of the telescopic rod 31.

[0073] The fine-tuning motor 33 is fixedly mounted on the slide plate 9 via the connecting bracket 34, and the output shaft of the fine-tuning motor 33 is fixedly connected to the fine-tuning rod 32.

[0074] The fine-tuning motor 33 drives the fine-tuning rod 32 to rotate through the output shaft, realizing the conversion of rotational motion into linear motion using the principle of threaded transmission: when the fine-tuning rod 32 rotates, its threaded connection with the free end of the telescopic rod 31 generates axial displacement, which pushes the slide plate 9 to move along the base plate 10 through the connecting frame 34. This displacement directly adjusts the axial distance between the moving shaft 11 and the fixed shaft 12, realizing the continuous adjustment of the overlap coefficient between the gear to be tested and the gear being tested, and meeting the requirements for accurate simulation of gear meshing characteristics under different working conditions; by adjusting the overlap coefficient in real time, the compressive strength characteristics of the gear under different meshing states can be systematically studied;

[0075] When it is necessary to replace the gear to be tested, the telescopic rod 31 drives the connecting frame 34 to move, so that the slide plate 9 pulls the fixed shaft 12 to move away from the moving shaft 11, so as to realize the quick separation of the gear to be tested and the test gear, making it convenient to take out the gear to be tested and replace the new gear.

[0076] As a further embodiment of the present invention, a sliding sleeve 4 and a lifting motor 41 are installed on both the sliding plate 9 and the base plate 10. A sliding rod 42 is slidably provided on each sliding sleeve 4. A top plate 43 and a support plate 44 are respectively installed at both ends of the sliding rod 42. A clearance groove 45 is provided on both the top plate 43 and the support plate 44. The output shaft of the lifting motor 41 is fixedly installed on the support plate 44.

[0077] During the dynamic testing of automotive gear strength, the gap between the gear and the testing device can cause a detection hysteresis effect: when the pressure adjusting cam 21 applies an alternating load, the gap causes a delay in the response of the gear contact state, affecting the accuracy of gear strength testing. In order to suppress the hysteresis, the traditional solution uses an overfit / interference fit to enhance the axial constraint, but this leads to a sudden increase in gear disassembly force, causing operational safety hazards and reduced efficiency.

[0078] The lifting motor 41 drives the support plate 44 to rise through the output shaft. The support plate 44 drives the top plate 43 to rise through the slide rod 42. When the top plate 43 contacts the detection gear (or the gear to be detected), it pushes the detection gear (or the gear to be detected) to move axially relative to the fixed shaft 12 (or the moving shaft 11), which facilitates the disassembly of the detection gear (or the gear to be detected).

[0079] As a further embodiment of the present invention, each of the pallets 44 is fixedly installed with a limiting sleeve 51, and a limiting shaft 52 is elastically slidably arranged inside the limiting sleeve 51 through an elastic element; when the pallet 44 rises, the limiting sleeve 51 drives the limiting shaft 52 to rise, and when the limiting shaft 52 contacts the bottom plate 10 or the sliding plate 9, the limiting shaft 52 stops moving and compresses the elastic element to play a buffering role.

[0080] As a further embodiment of the present invention, it also includes a testing cabinet 1, with a base plate 10 installed inside the testing cabinet 1. The testing cabinet 1 is also provided with a conveying structure 83 and a material handling structure 6. The conveying structure 83 is used for intermittent conveying of the workpiece, and the material handling structure 6 is used for reciprocating transfer of the workpiece on the conveying structure 83 and the base plate 10.

[0081] The interior of testing cabinet 1 is sealed, which improves testing safety;

[0082] The conveying structure 83 can send the gear to be tested into the testing cabinet 1, and the unloading structure 6 can move the conveying structure 83 onto the base plate 10; and can also move the gear that has been tested on the base plate 10 onto the conveying structure 83 and send it out of the testing cabinet 1 by the conveying structure 83; thus completing the automated testing.

[0083] As a further embodiment of the present invention, the unloading structure 6 includes a frame 61, a mounting plate 62 is slidably mounted on the frame 61 via a track, a clamping part 7 is provided below the mounting plate 62, and a lifting structure 63 is installed between the clamping part 7 and the mounting plate 62.

[0084] The mounting plate 62 moves on the frame 61 and can reciprocate above the conveying structure 83 and the base plate 10, which facilitates the loading and unloading of the gears to be inspected.

[0085] The lifting structure 63 is used to drive the clamping part 7 to move up and down, so that the clamping part 7 can clamp the gear to be tested or after the test is completed.

[0086] As a further embodiment of the present invention, the clamping part 7 includes a clamping plate 64, and telescopic motors 71 are provided at both ends of the bottom of the clamping plate 64. A clamping member 72 is installed at the output end of the telescopic motor 71. A connecting plate 73 is slidably provided on the clamping plate 64 through an elastic member.

[0087] The telescopic motor 71 drives the clamping parts 72 to move closer or further apart, thereby clamping or releasing the gears; while the elastically sliding connecting plate 73 is located between the clamping plate 64 and the lifting structure 63, which can play a buffering role to avoid squeezing the gears and causing damage to them.

[0088] As a further embodiment of the present invention, the detection cabinet 1 is equipped with a display panel 8, a controller 81, and an alarm device 82.

Claims

1. A device for testing the compressive strength of automotive gear components, comprising a base plate (10), characterized in that: The movable shaft (11) is rotatably mounted on the base plate (10); A fixed axis (12) is slidably mounted on a base plate (10) via a sliding plate (9); A linear drive structure (3) is installed between the slide plate (9) and the base plate (10) to drive the fixed shaft (12) to move relative to the base plate (10) and adjust the distance between the fixed shaft (12) and the moving shaft (11); The base (13) is mounted on the base plate (10) via a bracket (14) and has a cavity (15) inside. The pressure regulating gear (16) is rotatably mounted in the base (13) and is fixed coaxially with the moving shaft (11); The adjusting rack (17) meshes with the pressure adjusting gear (16) and is slidably installed in the cavity (15); The pressure regulating chamber (18) is set on the base (13) and communicates with the cavity (15); The pressure regulating plate (19) is elastically slidably disposed in the pressure regulating cavity (18) by means of an elastic element; The drive unit (2) is used to intermittently drive the pressure regulating plate (19) to rise.

2. The compressive strength testing device for automotive gear components according to claim 1, characterized in that: The drive unit (2) includes: The pressure regulating cam (21) is rotatably located at the bottom of the pressure regulating chamber (18). The pressure adjusting shaft (22) is fixedly set at the bottom of the pressure adjusting plate (19) and abuts against the concave and convex surfaces of the pressure adjusting cam (21); A pressure regulating motor (23) is mounted on the base plate (10) via a bracket (14) and is used to drive the pressure regulating cam (21) to rotate.

3. The compressive strength testing device for automotive gear parts according to claim 1, characterized in that: The linear drive structure (3) includes: The telescopic rod (31) is fixed at one end and mounted on the base plate (10) via a bracket (14). The fine-tuning rod (32) is threaded onto the free end of the telescopic rod (31); The fine-tuning motor (33) is fixedly mounted on the slide plate (9) via the connecting bracket (34), and the output shaft of the fine-tuning motor (33) is fixed to the fine-tuning rod (32).

4. The compressive strength testing device for automotive gear parts according to claim 1, characterized in that: Sliding sleeves (4) and lifting motors (41) are installed on the sliding plate (9) and the base plate (10). Each sliding sleeve (4) is slidably provided with a sliding rod (42). A top plate (43) and a support plate (44) are respectively installed at both ends of the sliding rod (42). Both the top plate (43) and the support plate (44) are provided with clearance grooves (45). The output shaft of the lifting motor (41) is fixedly installed with the support plate (44).

5. The compressive strength testing device for automotive gear parts according to claim 4, characterized in that: Each of the pallets (44) is fixedly installed with a limiting sleeve (51), and a limiting shaft (52) is elastically slidably provided inside the limiting sleeve (51) through an elastic element.

6. The compressive strength testing device for automotive gear parts according to claim 1, characterized in that: It also includes a testing cabinet (1), the base plate (10) is installed inside the testing cabinet (1), and the testing cabinet (1) is also provided with a conveying structure (83) and a material handling structure (6). The conveying structure (83) is used for intermittent conveying of workpieces, and the material handling structure (6) is used for reciprocating transfer of workpieces on the conveying structure (83) and the base plate (10).

7. The compressive strength testing device for automotive gear parts according to claim 6, characterized in that: The material handling structure (6) includes a frame (61), on which an mounting plate (62) is slidably mounted via a track. A clamping part (7) is provided below the mounting plate (62), and a lifting structure (63) is installed between the clamping part (7) and the mounting plate (62).

8. The compressive strength testing device for automotive gear parts according to claim 7, characterized in that: The clamping part (7) includes a clamping plate (64), and telescopic motors (71) are provided at both ends of the bottom of the clamping plate (64). A clamping component (72) is installed at the output end of the telescopic motor (71). A connecting plate (73) is slidably provided on the clamping plate (64) through an elastic component.

9. The compressive strength testing device for automotive gear parts according to claim 6, characterized in that: The detection cabinet (1) is equipped with a display panel (8), a controller (81), and an alarm device (82).

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