A fatigue testing mechanism for air spring shock absorbers

Abstract

This utility model belongs to the technical field of testing mechanisms, specifically a fatigue testing mechanism for an air spring shock absorber. It includes a base plate, with a testing mechanism mounted on top of the base plate. The testing mechanism includes a fixing component, comprising a fixing plate fixedly attached to the top of the base plate. A rectangular block is rotatably connected to the side wall of the fixing plate via a first rotating shaft. A pair of sliding grooves are formed on the side wall of the rectangular block, and a sliding block is slidably connected within the sliding grooves. A clamping block is fixedly attached to the side wall of the sliding block. An L-shaped block is fixedly attached to the side wall of the fixing plate, and a first motor is fixedly attached to the vertical side wall of the L-shaped block. The output end of the first motor is driven by a first rotating shaft. This invention solves the problem that after the shock absorber is fixed, it cannot be adjusted, and the shock absorber is subjected not only to vertical forces but also to forces in other angular directions, making it impossible to comprehensively evaluate its performance during testing.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing mechanisms, specifically a fatigue testing mechanism for an air spring shock absorber. Background Technology

[0002] Air spring shock absorbers are vibration damping devices that operate on the principle of air elasticity and are widely used in automotive suspension systems. They absorb vibrations during vehicle operation by compressing and extending air springs, providing a comfortable ride. Because air spring shock absorbers are repeatedly subjected to mechanical stress during use, fatigue testing is necessary to assess their reliability and durability in long-term use, ensuring the safety and stability of the vehicle.

[0003] In existing technologies, once the shock absorber is fixed, it cannot be adjusted. The shock absorber is subjected not only to forces in the vertical direction but also to forces in other angular directions, making it impossible to fully evaluate its performance during testing.

[0004] Therefore, this utility model provides a fatigue testing mechanism for an air spring shock absorber. Utility Model Content

[0005] To overcome the shortcomings of existing technology and solve the problem that once the shock absorber is fixed, it cannot be adjusted, and the shock absorber is subjected to forces not only in the vertical direction but also in other angular directions, making it impossible to fully evaluate its performance during testing.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A fatigue testing mechanism for an air spring shock absorber, comprising a base plate, a testing mechanism disposed on the top of the base plate, the testing mechanism comprising:

[0007] The fixing assembly includes a fixing plate fixed to the top of the base plate, a rectangular block rotatably connected to the side wall of the fixing plate via a first rotating shaft, a pair of sliding grooves provided on the side wall of the rectangular block, a sliding block slidably connected in the sliding grooves, a clamping block fixed to the side wall of the sliding block, an L-shaped block fixed to the side wall of the fixing plate, a first motor fixed to the vertical side wall of the L-shaped block, the output end of the first motor being drivenly connected to the first rotating shaft, and an adjustment assembly for adjusting the position of the pair of clamping blocks provided on the side wall of the rectangular block.

[0008] Loading components are mounted on a fixed plate for compressing spring shock absorbers.

[0009] Preferably, the adjustment assembly includes a fixing block fixed to the side wall of a rectangular block, a bidirectional threaded rod rotatably connected to the fixing block through a first rotating hole, a clamping block threadedly connected to the vertical threaded rod through a threaded hole, and a knob fixed to one end of the threaded rod.

[0010] Preferably, the loading component includes a support block fixed to the side wall of the fixed plate, a second motor fixed to the side wall of the support block, a drive rod provided at the output end of the second motor, and a first gear fixed to the end of the drive rod away from the motor.

[0011] Preferably, a second rotating shaft is rotatably connected to the support block through a second rotating hole, a second gear is fixedly connected to the second rotating shaft, the first gear and the second gear are meshed together, a rotating disk is fixedly connected to both ends of the second rotating shaft, a rectangular groove is opened on the side wall of the rotating disk, and an electric push rod is fixedly connected to the groove wall of the rectangular groove.

[0012] Preferably, the telescopic end of the electric actuator is fixedly connected to a sliding block, the sliding block is slidably connected in a rectangular groove, a circular block is fixedly connected to the side wall of the sliding block, and a connecting rod is rotatably connected to the circular block.

[0013] Preferably, the fixed plate has a rectangular hole, an I-shaped block is slidably connected in the rectangular hole, a pressure plate is fixedly connected to the side wall of the I-shaped block, a force sensor is provided on the side wall of the I-shaped block, and a third rotating shaft is rotatably connected to the I-shaped block through a third rotating hole, with both ends of the third rotating shaft fixedly connected to the side walls of a pair of connecting rods respectively.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The fatigue testing mechanism for an air spring shock absorber described in this utility model starts a first motor, which rotates a rectangular block to adjust the angle of the shock absorber, thereby simulating different working conditions of the shock absorber in actual use. This solves the problem in the prior art where the shock absorber cannot be adjusted after being fixed, and the shock absorber is subjected not only to vertical forces but also to forces in other angular directions, making it impossible to fully evaluate its performance during testing.

[0016] 2. The fatigue testing mechanism for an air spring shock absorber described in this utility model can precisely control the up-and-down movement of the I-shaped block through a second motor and gear transmission, ensuring the accuracy and stability of the applied load. The extension and retraction of the electric push rod can precisely control the position of the sliding block, and the distance of the reciprocating movement of the I-shaped block can be adjusted to simulate different road conditions. It can also test shock absorbers of different lengths. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the second motor in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping block in this utility model;

[0021] Figure 4 This is a schematic diagram of the electric actuator in this utility model;

[0022] In the diagram: 1. Base plate; 2. Fixing plate; 3. Rectangular block; 4. Sliding groove; 5. Sliding block; 6. Clamping block; 7. L-shaped block; 8. First motor; 9. Fixing block; 10. Bidirectional threaded rod; 11. Knob; 12. Support block; 13. Second motor; 14. Drive rod; 15. First gear; 16. Second rotating shaft; 17. Second gear; 18. Rotating disk; 19. Rectangular groove; 20. Electric actuator; 21. Sliding block; 22. Circular block; 23. Connecting rod; 24. Rectangular hole; 25. I-shaped block; 26. Pressure plate; 27. Force sensor; 28. Third rotating shaft; 29. ​​First rotating shaft. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 4 As shown, a fatigue testing mechanism for an air spring shock absorber according to an embodiment of the present invention includes a base plate 1, a testing mechanism on the top of the base plate 1, and a fixing component including a fixing plate 2 fixedly attached to the top of the base plate 1. A rectangular block 3 is rotatably connected to the side wall of the fixing plate 2 via a first rotating shaft. A pair of sliding grooves 4 are provided on the side wall of the rectangular block 3. A sliding block 215 is slidably connected in the sliding grooves 4. A clamping block 6 is fixedly attached to the side wall of the sliding block 215. An L-shaped block 7 is fixedly attached to the side wall of the fixing plate 2. A first motor 8 is fixedly attached to the vertical side wall of the L-shaped block 7. The output end of the first motor 8 is drivenly connected to a first rotating shaft 29. An adjustment component for adjusting the position of the pair of clamping blocks 6 is provided on the side wall of the rectangular block 3.

[0025] Loading components are set on fixed plate 2 for compressing spring shock absorbers.

[0026] The adjustment assembly includes a fixed block 9 fixed to the side wall of a rectangular block 3, a bidirectional threaded rod 10 rotatably connected to the fixed block 9 through a first rotating hole, a clamping block 6 threadedly connected to the vertical threaded rod through a threaded hole, and a knob 11 fixed to one end of the threaded rod.

[0027] During operation, the first motor 8 is started, and the rotation of the motor drives the rectangular block 3 to rotate, adjusting the angle of the shock absorber to simulate different working conditions of the shock absorber in actual use. This solves the problem in the existing technology that the shock absorber cannot be adjusted after being fixed, and the shock absorber is subjected not only to vertical force but also to force in other angular directions, making it impossible to fully evaluate its performance during testing.

[0028] The loading component includes a support block 12 fixed to the side wall of the fixed plate 2, a second motor 13 fixed to the side wall of the support block 12, a drive rod 14 provided at the output end of the second motor 13, and a first gear 15 fixed to the end of the drive rod 14 away from the motor.

[0029] A second rotating shaft 16 is rotatably connected to the support block 12 through a second rotating hole. A second gear 17 is fixedly connected to the second rotating shaft 16. The first gear 15 is meshed with the second gear 17. Rotating disks 18 are fixedly connected to both ends of the second rotating shaft 16. A rectangular groove 19 is opened on the side wall of the rotating disk 18. An electric push rod 20 is fixedly connected to the groove wall of the rectangular groove 19.

[0030] The telescopic end of the electric actuator 20 is fixedly connected to a sliding block 215, which is slidably connected in the rectangular groove 19. A circular block 22 is fixedly connected to the side wall of the sliding block 215, and a connecting rod 23 is rotatably connected to the circular block 22.

[0031] A rectangular hole 24 is provided on the fixed plate 2. An I-shaped block 25 is slidably connected in the rectangular hole 24. A pressure plate 26 is fixedly connected to the side wall of the I-shaped block 25. A force sensor 27 is provided on the side wall of the I-shaped block 25. A third rotating shaft 28 is rotatably connected to the I-shaped block 25 through a third rotating hole. The two ends of the third rotating shaft 28 are respectively fixed to the side walls of a pair of connecting rods 23.

[0032] During operation, the up-and-down movement of the I-shaped block 25 can be precisely controlled through the second motor 13 and gear transmission to ensure the accuracy and stability of the applied load. The extension and retraction of the electric push rod 20 can precisely control the position of the sliding block 215, and the reciprocating distance of the I-shaped block 25 can be adjusted to simulate different road conditions and to test shock absorbers of different lengths.

[0033] Working principle: The fixed plate 2 is fixed to the top of the base plate 1, providing stable support for the entire testing mechanism. The rectangular block 3 is rotatably connected to the fixed plate 2 via the first rotating shaft, allowing it to rotate on the fixed plate 2 to adapt to different angle testing requirements. The side wall of the rectangular block 3 has a pair of sliding grooves 4, and a sliding block 215 is slidably connected within the sliding grooves 4. The sliding block 215 can slide within the sliding grooves 4 to adjust the position of the clamping block 6. The two ends of the bidirectional threaded rod 10 are respectively connected to the two clamping blocks 6. By rotating the bidirectional threaded rod 10, the positions of the two clamping blocks 6 can be adjusted simultaneously. By rotating the knob 11, the position of the clamping block 6 can be precisely adjusted to ensure that the clamping block 6 can be firmly fixed to the bottom of the shock absorber. The first motor 8 drives the first rotating shaft 29 to rotate, thereby driving the shock absorber to adjust its angle.

[0034] The second motor 13 is started, and the drive rod 14 drives the first gear 15 to rotate. The first gear 15, through meshing, drives the second gear 17 to rotate. The rotation of the second gear 17 drives the two rotating disks 18 to rotate via the second rotating shaft 16. This, in turn, moves the connecting rod 23 via the circular block 22, thereby raising and lowering the I-shaped block 25 via the third rotating shaft 28. This achieves a reciprocating compression effect on the top of the shock absorber. The position of the sliding block 215 can be controlled by the electric push rod 20, which adjusts the reciprocating distance of the I-shaped block 25 to simulate different road conditions and to test shock absorbers of different lengths. Through the force sensor, the change in the force exerted by the shock absorber on the force sensor 27 after the shock absorber reciprocates can be observed, thus detecting its fatigue. As the test progresses, the internal material of the shock absorber may gradually develop micro-cracks or wear, leading to a decrease in its mechanical properties. At this time, when the same force is applied, the reaction force of the shock absorber may change, achieving the detection effect.

[0035] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fatigue testing mechanism for an air spring shock absorber, comprising a base plate (1), characterized in that: A testing mechanism is provided on the top of the base plate (1), and the testing mechanism includes: The fixing assembly includes a fixing plate (2) fixed to the top of the base plate (1), a rectangular block (3) rotatably connected to the side wall of the fixing plate (2) via a first rotating shaft, a pair of sliding grooves (4) provided on the side wall of the rectangular block (3), sliding blocks (21) (5) slidably connected in the sliding grooves (4), clamping blocks (6) fixed to the side wall of the sliding blocks (21) (5), an L-shaped block (7) fixed to the side wall of the fixing plate (2), a first motor (8) fixed to the vertical side wall of the L-shaped block (7), the output end of the first motor (8) being driven connected to the first rotating shaft (29), and an adjustment assembly for adjusting the position of the pair of clamping blocks (6) provided on the side wall of the rectangular block (3). Loading components are set on the fixed plate (2) for compressing the spring shock absorber.

2. The fatigue testing mechanism for an air spring shock absorber according to claim 1, characterized in that: The adjustment assembly includes a fixed block (9) fixed to the side wall of a rectangular block (3), a bidirectional threaded rod (10) rotatably connected to the fixed block (9) through a first rotating hole, a clamping block (6) threadedly connected to the vertical threaded rod through a threaded hole, and a knob (11) fixed to one end of the threaded rod.

3. The fatigue testing mechanism for an air spring shock absorber according to claim 1, characterized in that: The loading assembly includes a support block (12) fixed to the side wall of the fixed plate (2), a second motor (13) fixed to the side wall of the support block (12), a drive rod (14) provided at the output end of the second motor (13), and a first gear (15) fixed to the end of the drive rod (14) away from the motor.

4. The fatigue testing mechanism for an air spring shock absorber according to claim 3, characterized in that: The support block (12) is rotatably connected to a second rotating shaft (16) through a second rotating hole. A second gear (17) is fixedly connected to the second rotating shaft (16). The first gear (15) meshes with the second gear (17). Rotating disks (18) are fixedly connected to both ends of the second rotating shaft (16). A rectangular groove (19) is opened on the side wall of the rotating disk (18). An electric push rod (20) is fixedly connected to the groove wall of the rectangular groove (19).

5. The fatigue testing mechanism for an air spring shock absorber according to claim 4, characterized in that: The telescopic end of the electric actuator (20) is fixedly connected to a sliding block (21)(5), the sliding block (21)(5) is slidably connected in a rectangular groove (19), a circular block (22) is fixedly connected to the side wall of the sliding block (21)(5), and a connecting rod (23) is rotatably connected to the circular block (22).

6. The fatigue testing mechanism for an air spring shock absorber according to claim 5, characterized in that: The fixed plate (2) has a rectangular hole (24), and an I-shaped block (25) is slidably connected in the rectangular hole (24). A pressure plate (26) is fixedly connected to the side wall of the I-shaped block (25). A force sensor (27) is provided on the side wall of the I-shaped block (25). A third rotating shaft (28) is rotatably connected to the I-shaped block (25) through a third rotating hole. The two ends of the third rotating shaft (28) are respectively fixed to the side walls of a pair of connecting rods (23).

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