A step pin fatigue test device

Abstract

The present invention discloses a step pin fatigue test device, which relates to the field of industrial parts testing equipment, including a central rotating shaft, a plurality of connecting plates are arranged around the outer periphery of the central rotating shaft, a guide plate is arranged between the plurality of connecting plates, and the connecting plate is connected to the central rotating shaft. The present invention places the step pin to be tested in the connecting opening of the conveyor belt, conveys it to the bottom of the central rotating shaft through the conveyor belt, and drives the second limit plate to extend and clamp the pin through the limit claw by the third control motor. In this way, the complex stress conditions of the pin in actual use, such as torsion and bending, can be accurately simulated, so that the test environment is highly consistent with the actual working conditions, greatly improving the accuracy and reliability of the fatigue test results, providing a solid data basis for the quality evaluation of the step pin, effectively guiding the optimization design and production process improvement of the product, reducing the risk of early failure of the product in actual application, and improving the market competitiveness and service life of the product.

Description

Technical Field

[0001] The invention relates to the field of industrial parts testing equipment, in particular to a step pin fatigue testing device. Background Art

[0002] In the field of industrial manufacturing, especially in the mechanical transmission and automobile manufacturing industries, the quality and reliability of the step pin as a key connecting component is directly related to the performance and safety of the entire equipment. With the continuous improvement of modern industry's requirements for product quality and the stringent demands for equipment durability and stability, fatigue performance testing of step pins has become crucial. This is not only related to the competitiveness of the company's products, but also closely linked to production safety, equipment maintenance costs and the sustainable development of the industry, prompting the continuous development and improvement of related test technologies.

[0003] At present, there are many problems with the fatigue test technology of stepped pins. Some test equipment has a single function and can only perform simple axial loading tests, which cannot simulate the complex stress conditions in actual working conditions, such as torsion and bending. The test accuracy of some equipment is low, and it is difficult to accurately measure the tiny deformation and wear of the pin during the fatigue process, resulting in inaccurate assessment of the pin life. Moreover, the existing equipment has a low degree of automation, and requires a lot of manual intervention in sample installation, test process control, and data collection. It is not only inefficient, but also easy to introduce human errors, affecting the reliability and consistency of the test results, and it is difficult to meet the efficient and precise production needs of modern industry.

[0004] Traditional step pin fatigue tests usually involve manually installing the pin on a simple fixture, applying a single-direction axial force through hydraulic or mechanical devices, and performing cyclic loading at a certain frequency and amplitude. During the test, the machine is shut down periodically and simple measuring tools are used to measure and record the wear and deformation of the pin, which lacks real-time and accurate monitoring methods. During the entire test process, the adjustment of equipment parameters is also cumbersome, requiring manual operation of various valves and controllers to change the loading force, frequency, etc., and the test conditions cannot be automatically optimized according to the real-time status of the pin. The test efficiency is low and the data accuracy is difficult to guarantee, making it impossible to comprehensively and accurately evaluate the fatigue performance of the step pin.

[0005] The inadequacy of existing technologies in simulating working conditions results in large deviations between test results and actual usage, which may lead to early failure of products in actual applications, increasing equipment maintenance costs and downtime. The test accuracy is low, and it is impossible to accurately capture the fatigue damage process of the pin, making it difficult to conduct in-depth research on its fatigue mechanism, which is not conducive to the optimal design of the product. The degree of automation is poor, and manual operations are cumbersome and error-prone, which not only consumes a lot of manpower and material resources, but also prolongs the test cycle and reduces production efficiency. It cannot meet the needs of large-scale, high-quality industrial production for rapid and accurate evaluation of the fatigue performance of step pins, hindering the technological progress and development of related industries. Summary of the invention

[0006] Based on this, the purpose of the present invention is to provide a step pin fatigue testing device to solve the technical problems of existing step pin fatigue testing equipment with single function, low precision and insufficient automation.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a step pin fatigue testing device, comprising a central rotating shaft, a plurality of connecting plates are arranged around the outer periphery of the central rotating shaft, a guide plate is arranged between the plurality of connecting plates, the connecting plate is connected to the central rotating shaft, a feeding structure is arranged at one end of the connecting plate away from the central rotating shaft, the feeding structure comprises a control box, a second limit plate is movably arranged on a surface of the control box away from the central rotating shaft, a first limit plate is movably arranged on the top of the second limit plate, a third control motor is arranged in the control box to cooperate with the second limit plate, a third push rod is arranged on one side of the third control motor to cooperate with the second limit plate, a fourth control motor is arranged on one side of the control box to cooperate with the first limit plate, and a fourth push rod is arranged on the fourth control motor to cooperate with the first limit plate.

[0008] By adopting the above technical solution, the step pin can be clamped and pushed out.

[0009] The present invention is further configured such that a pair of limiting claws are rotatably arranged in the groove of the second limiting plate, a rotating connecting piece is arranged on the second limiting plate to cooperate with the limiting claws, and a spring is arranged in the second limiting plate to cooperate with the limiting claws.

[0010] By adopting the above technical solution, the step pin can be clamped while the first limit plate can push the step pin out for subsequent testing.

[0011] The present invention is further configured such that a pair of second push rods are symmetrically arranged on both sides of the central rotating shaft, a first air pump is arranged at the bottom of the second push rods, and a first control motor is arranged on the second push rods to cooperate with the central rotating shaft.

[0012] By adopting the above technical solution, the effect of controlling the height of the central rotating shaft is achieved.

[0013] The present invention is further configured as follows: a mounting plate is provided on one side of the central rotating shaft, a plurality of test blocks are provided on the mounting plate, a slot is opened on the test block, a rotating plate is rotatably provided at the bottom of the slot, a magnetic plate is provided on the rotating plate, a wear test liner is provided on the rotating plate, a control turntable is provided at the bottom of the mounting plate to cooperate with the rotating plate, a rotating rod is rotatably provided on one side of the control turntable, and a second control motor is provided on one side of the first push rod to cooperate with the rotating rod.

[0014] By adopting the above technical solution, the step pin is installed through the magnetic suction plate, and the step pin is tested through the wear test liner.

[0015] The present invention is further configured such that a first push rod is symmetrically arranged at the bottom of the mounting plate, and a second air pump is arranged at the bottom of the first push rod.

[0016] By adopting the above technical solution, the height of the mounting plate is adjusted by the second air pump in cooperation with the first top.

[0017] The present invention is further configured such that a side of the central rotating shaft away from the mounting plate is provided with a plurality of guide grooves in cooperation with a plurality of first limiting plates, and a support frame is provided at the bottom of the guide grooves.

[0018] By adopting the above technical solution, the step pin shaft that has completed the test is output through the guide groove.

[0019] The present invention is further configured such that a conveyor belt is provided at a certain angle at the bottom between the central rotating shaft and the mounting plate, and a connecting opening is provided on the conveyor belt.

[0020] By adopting the above technical solution, samples are provided for testing of the step pin through a conveyor belt.

[0021] In summary, the present invention mainly has the following beneficial effects:

[0022] 1. The present invention places the step pin to be tested at the connection opening of the conveyor belt, conveys it to the bottom of the central shaft, and drives the second limit plate to extend by the third control motor and clamp the pin through the limit claw. Then, according to the test requirements, the first control motor controls the second push rod to adjust the position of the central shaft. In this way, the complex stress conditions of the pin in actual use, such as torsion and bending, can be accurately simulated, so that the test environment is highly consistent with the actual working conditions, greatly improving the accuracy and reliability of fatigue test results, providing a solid data foundation for the quality assessment of the step pin, effectively guiding the optimization design and production process improvement of the product, reducing the risk of early failure of the product in actual application, and improving the market competitiveness and service life of the product;

[0023] 2. After the present invention completes the fatigue test through the step pin, the fourth control motor drives the fourth push rod to push the first limit plate, and the pin is pushed out and falls into the guide groove for collection. The entire test process has a high degree of automation, which reduces manual intervention, reduces human errors, and significantly improves test efficiency. After the test, clean up the debris of the test block, check the wear of each component and perform maintenance, such as lubricating the motor shaft, checking the performance of the push rod, maintaining the air pump, etc., to ensure the long-term stable operation of the equipment, reduce the downtime of equipment failures, improve equipment utilization, reduce the company's equipment maintenance costs and production costs, ensure the continuous and efficient detection of the step pin, and promote the stable development of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the central rotating shaft structure of the present invention;

[0026] Figure 3 It is a partial structural schematic diagram of the present invention;

[0027] Figure 4 For the present invention Figure 3 Bottom view of the structure;

[0028] Figure 5 For the present invention Figure 3 Top view of the structure;

[0029] Figure 6 For the present invention Figure 3 Schematic diagram of the structure from the side.

[0030] In the figure: 1. central shaft; 2. guide plate; 3. feeding structure; 4. connecting plate; 5. first control motor; 6. guide groove; 7. support frame; 8. first air pump; 9. conveyor belt; 10. connecting opening; 11. second air pump; 12. first push rod; 13. test block; 14. slot; 15. second push rod; 16. wear test liner; 17. magnetic plate; 18. rotating plate; 19. mounting plate; 20. control turntable; 21. rotating rod; 22. third push rod; 23. second control motor; 24. third control motor; 25. fourth control motor; 26. fourth push rod; 27. first limit plate; 28. second limit plate; 29. ​​control box; 30. rotating connector; 31. limit claw; 32. spring. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] The following describes an embodiment of the present invention based on its overall structure.

[0033] A step pin fatigue test device, such as Figure 1-6 As shown, it includes a central rotating shaft 1, a plurality of connecting plates 4 are arranged around the outer periphery of the central rotating shaft 1, a guide plate 2 is arranged between the plurality of connecting plates 4, the connecting plate 4 is connected to the central rotating shaft 1, a feeding structure 3 is arranged at one end of the connecting plate 4 away from the central rotating shaft 1, the feeding structure 3 includes a control box 29, a second limiting plate 28 is movably arranged on a surface of the control box 29 away from the central rotating shaft 1, a first limiting plate 27 is movably arranged on the top of the second limiting plate 28, and the second limiting plate 27 is matched with the control box 29. 8 is provided with a third control motor 24, one side of the third control motor 24 is provided with a third push rod 22 in cooperation with the second limit plate 28, one side of the control box 29 is provided with a fourth control motor 25 in cooperation with the first limit plate 27, and the fourth control motor 25 is provided with a fourth push rod 26 in cooperation with the first limit plate 27, the second limit plate 28 is extended by the third control motor 24, and the second limit plate 28 is controlled to clamp the step pin shaft, and at the same time, the first limit plate 27 is controlled to extend by the fourth control motor 25, The step pin held by the second limit plate 28 is pushed out, and in cooperation with it, a mounting plate 19 is provided on one side of the central shaft 1, and a plurality of test blocks 13 are provided on the mounting plate 19, and a slot 14 is provided on the test block 13, and a rotating plate 18 is rotatably provided at the bottom of the slot 14, and a magnetic plate 17 is provided on the rotating plate 18, and a wear test liner 16 is provided on the rotating plate 18, and a control turntable 20 is provided at the bottom of the mounting plate 19 to cooperate with the rotating plate 18, and the control turntable 20 A rotating rod 21 is rotatably arranged on one side, a second control motor 23 is arranged on one side of the first push rod 12 to cooperate with the rotating rod 21, the first push rod 12 is symmetrically arranged on the bottom of the mounting plate 19, and a second air pump 11 is arranged on the bottom of the first push rod 12. In actual use, the step pin shaft is pushed to the slot 14 through the second limit plate 28. At this time, the rotating rod 21 is driven to rotate by the second control motor 23, and then the control turntable 20 is driven to rotate, and then the wear test liner 16 is driven to rotate, and the step pin shaft is friction tested.

[0034] Furthermore, a pair of limiting claws 31 are rotatably arranged in the groove opened in the second limiting plate 28, a rotating connecting piece 30 is arranged on the second limiting plate 28 to cooperate with the limiting claws 31, and a spring 32 is arranged in the second limiting plate 28 to cooperate with the limiting claws 31. The step pin shaft is limited and clamped by the set limiting claws 31, and when the first limiting plate 27 pushes the step pin shaft, the step pin shaft is pushed out, so that the second limiting plate 28 loses its clamping of the step pin shaft.

[0035] A pair of second push rods 15 are symmetrically arranged on both sides of the central rotating shaft 1, a first air pump 8 is arranged at the bottom of the second push rod 15, and a first control motor 5 is arranged on the second push rod 15 to cooperate with the central rotating shaft 1. The movement of the second push rod 15 is controlled by the arranged first control motor 5, thereby controlling the position of the central rotating shaft 1.

[0036] The side of the central rotating shaft 1 away from the mounting plate 19 is provided with a plurality of guide grooves 6 in cooperation with a plurality of first limit plates 27, and a support frame 7 is provided at the bottom of the guide groove 6, and the guide groove 6 is supported by the support frame 7, and the step pin output of the test is completed through the provided guide groove 6.

[0037] Furthermore, a conveyor belt 9 is arranged at a certain angle at the bottom between the central rotating shaft 1 and the mounting plate 19, and a connecting opening 10 is opened on the conveyor belt 9. By placing the step pin shaft to be tested in the connecting opening 10 and conveying it to the bottom of the central rotating shaft 1 through the conveyor belt 9, the second limit plate 28 clamps the step pin shaft, thereby performing subsequent testing operations.

[0038] In actual use, place the step pin fatigue test device in a stable, dry and well-ventilated workplace to ensure that all components are firmly installed without looseness or damage. Check whether the central shaft 1 can rotate flexibly, whether the connection between the connecting plate 4 and the central shaft 1 is tight, whether the guide plate 2 is well fixed, whether the control motors, push rods and limit plates in the feeding structure 3 can work normally, whether the movement of each transmission component is smooth, check whether the test block 13 on the mounting plate 19 and the wear test liner 16, magnetic plate 17 and rotating plate 18 inside are intact, whether the control turntable 20 cooperates with the rotating rod 21 normally, whether the first push rod 12 and the second push rod 15 can be extended and retracted freely, whether the connection and operation of the first air pump 8 and the second air pump 11 are normal, whether the conveyor belt 9 is flat and not damaged, and whether the connecting opening 10 can normally convey the step pin, so as to make full preparations for subsequent test operations;

[0039] Place the step pin to be tested in the connection opening 10 of the conveyor belt 9, start the conveyor belt 9, and convey the step pin to the bottom of the central shaft 1. At this time, the second limit plate 28 is extended under the drive of the third control motor 24, and the limit claw 31 in its groove is opened under the action of the spring 32 to initially clamp the step pin to ensure the accurate position of the pin, and prepare to enter the test phase;

[0040] When the step pin is clamped, the second control motor 23 is started, driving the rotating rod 21 to rotate, and then driving the control turntable 20 to rotate, so that the wear test liner 16 starts to rotate, and the friction test of the step pin is performed. At the same time, according to the test requirements, the movement of the second push rod 15 can be controlled by the first control motor 5 to adjust the position of the central shaft 1, simulate different working conditions, and perform a full range of fatigue tests on the step pin. During the test, pay close attention to the operating status of the equipment and the test status of the pin to ensure the accuracy and safety of the test;

[0041] After the fatigue test of the step pin is completed, the fourth control motor 25 is started, driving the fourth push rod 26 to push the first limit plate 27 out, pushing the step pin out of the second limit plate 28, making it fall into the guide groove 6. Under the action of gravity, the step pin rolls along the guide groove 6 and is finally collected, completing a test cycle. At the same time, the limit claw 31 in the second limit plate 28 is squeezed during the pin push-out process, compressing the spring 32 and shrinking inward, so that the pin can be pushed out smoothly;

[0042] After completing the fatigue test of a batch of step pins, turn off the power of the equipment and clean it thoroughly. Clean the wear debris in the test block 13, check the wear of the wear test liner 16, the magnetic plate 17 and the rotating plate 18, check and maintain the various components in the feeding structure 3, such as lubricating the motor shaft, checking the telescopic performance of the push rod, etc., and check the wear degree of the conveyor belt 9 and the integrity of the connecting opening 10. Maintain the first air pump 8 and the second air pump 11 to ensure that the various performance indicators of the equipment meet the requirements of the next test, extend the service life of the equipment, improve the reliability and stability of the test results, and provide strong guarantees for the quality evaluation of the step pins.

[0043] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A step pin fatigue test device, comprising a central rotating shaft (1), characterized in that: A plurality of connecting plates (4) are arranged around the outer periphery of the central rotating shaft (1), and guide plates (2) are arranged between the plurality of connecting plates (4). The connecting plates (4) are connected to the central rotating shaft (1), and a feeding structure (3) is arranged at one end of the connecting plate (4) away from the central rotating shaft (1). The feeding structure (3) comprises a control box (29), and a second limiting plate (28) is movably arranged on a surface of the control box (29) away from the central rotating shaft (1), and a first limiting plate (27) is movably arranged on the top of the second limiting plate (28). A third control motor (24) is arranged in the control box (29) in cooperation with the second limiting plate (28), and a third push rod (22) is arranged on one side of the third control motor (24) in cooperation with the second limiting plate (28). A fourth control motor (25) is arranged on one side of the control box (29) in cooperation with the first limiting plate (27), and a fourth push rod (26) is arranged on the fourth control motor (25) in cooperation with the first limiting plate (27).

2. A step pin fatigue testing device according to claim 1, characterized in that: A pair of limiting claws (31) are rotatably arranged in the grooves opened in the second limiting plate (28), a rotating connecting piece (30) is arranged on the second limiting plate (28) to cooperate with the limiting claws (31), and a spring (32) is arranged in the second limiting plate (28) to cooperate with the limiting claws (31).

3. A step pin fatigue testing device according to claim 1, characterized in that: A pair of second push rods (15) are symmetrically arranged on both sides of the central rotating shaft (1), a first air pump (8) is arranged at the bottom of the second push rod (15), and a first control motor (5) is arranged on the second push rod (15) in coordination with the central rotating shaft (1).

4. A step pin fatigue testing device according to claim 1, characterized in that: A mounting plate (19) is arranged on one side of the central rotating shaft (1), a plurality of test blocks (13) are arranged on the mounting plate (19), a slot (14) is provided on the test block (13), a rotating plate (18) is rotatably arranged at the bottom of the slot (14), a magnetic attraction plate (17) is arranged on the rotating plate (18), a wear test liner (16) is arranged on the rotating plate (18), a control turntable (20) is arranged at the bottom of the mounting plate (19) in coordination with the rotating plate (18), a rotating rod (21) is rotatably arranged on one side of the control turntable (20), and a second control motor (23) is arranged on one side of the first push rod (12) in coordination with the rotating rod (21).

5. The step pin fatigue testing device according to claim 1, characterized in that: A first push rod (12) is symmetrically arranged at the bottom of the mounting plate (19), and a second air pump (11) is arranged at the bottom of the first push rod (12).

6. A step pin fatigue testing device according to claim 1, characterized in that: A plurality of guide grooves (6) are arranged on the side of the central rotating shaft (1) away from the mounting plate (19) in cooperation with a plurality of first limiting plates (27), and a support frame (7) is arranged at the bottom of the guide groove (6).

7. The step pin fatigue testing device according to claim 1, characterized in that: A conveyor belt (9) is arranged at a certain angle at the bottom between the central rotating shaft (1) and the mounting plate (19), and a connecting opening (10) is provided on the conveyor belt (9).

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