Device for testing shock absorber

Abstract

The utility model relates to the technical field of shock absorber testing, in particular to a device for testing a shock absorber, a clamping assembly comprises a clamping frame, a second motor and two clamping plates, the two clamping plates clamp a shock absorber body in the clamping frame, the outer end of each clamping plate is provided with a bent rod penetrating through the clamping frame, and the bent rods are connected with the second motor. The outer end of the bent rod is provided with a moving block, the second motor is fixed to one side of the clamping frame, the output end of the second motor is provided with a second rotating shaft, the two clamping assemblies and the rotatable top block are arranged, after detection of one shock absorber body is completed, the first motor is started to rotate the top block by 180 degrees, and then the first motor is started to rotate the top block by 180 degrees. When one shock absorber body is detected, the other shock absorber body can be quickly detected, so that the tedious steps of unloading and re-loading after each detection in the traditional mode are avoided, the time is greatly saved, and the test efficiency of the shock absorber is improved.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber testing technology, specifically to a device for testing shock absorbers. Background Technology

[0002] In order to quickly dampen the vibration of the chassis and body and improve the smoothness and comfort of the car ride, the car suspension system is generally equipped with shock absorbers. The double-acting telescopic shock absorber is widely used in cars.

[0003] During the production process, shock absorbers need to undergo fatigue testing. When using existing testing equipment, after a single test of the shock absorber is completed, it is necessary to unload it and then reload it, which leads to low testing efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a device for testing shock absorbers.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for testing a shock absorber, comprising a test bench and a shock absorber body, wherein a first motor is provided at the lower end of the test bench, a first rotating shaft is provided at the output end of the first motor and passing through the test bench, a top block is provided at the top end of the first rotating shaft, and two clamping components are symmetrically arranged at both ends of the top block;

[0006] The clamping assembly includes a clamping frame, a second motor, and two clamping plates. The two clamping plates clamp the shock absorber body within the clamping frame. The outer ends of the clamping plates are provided with bent rods that penetrate the clamping frame, and the outer ends of the bent rods are provided with moving blocks. The second motor is fixed to one side of the clamping frame. The output end of the second motor is provided with a second rotating shaft. Two screws with reverse thread structures are symmetrically arranged on the second rotating shaft, and the two screws respectively penetrate the two moving blocks.

[0007] The test bench is equipped with a fixed frame and a crossbar on its upper part. Two vertical bars are symmetrically arranged on one side of the fixed frame. The two ends of the crossbar are penetrated by the vertical bars. A pressure plate is provided at the lower end of the crossbar. A sliding groove is provided on one side of the crossbar. A detection motor is provided at the upper end of the fixed frame. A disc is provided at the output end of the detection motor. A drive rod that slides with the sliding groove is provided on the periphery of the disc.

[0008] Once one of the shock absorber bodies has been tested, the first motor is started, which causes the first rotating shaft to rotate 180 degrees with the top block, allowing the other shock absorber body to be tested.

[0009] To facilitate assembly of the top block, the present invention is improved by fixing the top block to the top of the first rotating shaft with screws.

[0010] Furthermore, an improvement of this utility model is that both the drive rod and the vertical rod are cylindrical structures.

[0011] To ensure the service life of the shock absorber body, the improvement of this utility model is that a buffer pad is provided at the lower end of the pressure plate.

[0012] Furthermore, an improvement of this utility model is that the bottom end of the shock absorber body contacts the surface of the test bench.

[0013] Furthermore, an improvement of this utility model is that the first motor, the second motor, and the detection motor are all servo motors.

[0014] Compared with the prior art, the present invention provides a device for testing shock absorbers, which has the following advantages:

[0015] Improved testing efficiency: By setting up two clamping components and a rotatable top block, after one shock absorber body is tested, simply start the first motor to rotate the top block 180 degrees to quickly test the other shock absorber body. This avoids the tedious steps of unloading and reloading after each test in the traditional method, greatly saving time and improving the testing efficiency of shock absorbers.

[0016] Stable clamping of the shock absorber: The clamping assembly adopts a design with a second motor-driven screw with a reverse thread structure, which can precisely control the movement of the two clamping plates and stably clamp the shock absorber body. This ensures that the shock absorber will not shake or shift during the testing process, thus ensuring the accuracy of the test results. Attached Figure Description

[0017] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;

[0019] Figure 3 This utility model Figure 1 The main view;

[0020] Figure 4 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0021] In the diagram: 1. Test bench; 2. First motor; 3. Top block; 4. Clamping frame; 5. Second motor; 6. Second rotating shaft; 7. Screw; 8. Bend rod; 9. Clamping plate; 10. Moving block; 11. Shock absorber body; 12. Fixing frame; 13. Detection motor; 14. Disc; 15. Drive rod; 16. Vertical rod; 17. Horizontal rod; 18. Pressure plate; 19. Slide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 The present invention provides a device for testing a shock absorber, comprising a test bench 1 and a shock absorber body 11. The lower end of the test bench 1 is provided with a first motor 2, the output end of the first motor 2 is provided with a first rotating shaft passing through the test bench 1, the top end of the first rotating shaft is provided with a top block 3, and two clamping components are symmetrically arranged at both ends of the top block 3.

[0024] The clamping assembly includes a clamping frame 4, a second motor 5, and two clamping plates 9. The two clamping plates 9 clamp the shock absorber body 11 within the clamping frame 4. The outer end of each clamping plate 9 is provided with a bent rod 8 that penetrates the clamping frame 4. The outer end of the bent rod 8 is provided with a moving block 10. The second motor 5 is fixed to one side of the clamping frame 4. The output end of the second motor 5 is provided with a second rotating shaft 6. Two screws 7 with reverse thread structure are symmetrically arranged on the second rotating shaft 6, and the two screws 7 respectively penetrate the two moving blocks 10.

[0025] The test bench 1 is provided with a fixed frame 12 and a crossbar 17 above it. Two vertical bars 16 are symmetrically arranged on one side of the fixed frame 12. The two ends of the crossbar 17 are penetrated by the vertical bars 16. The lower end of the crossbar 17 is provided with a pressure plate 18. A sliding groove 19 is provided on one side of the crossbar 17. The upper end of the fixed frame 12 is provided with a detection motor 13. The output end of the detection motor 13 is provided with a disc 14. The periphery of the disc 14 is provided with a drive rod 15 that slides with the sliding groove 19.

[0026] Shock absorber clamping and fixing: The second motor 5 is started, and the second rotating shaft 6 at its output end drives the two screws 7 to rotate. Because the screws 7 have a reverse thread structure, when the screws 7 rotate, the two moving blocks 10, which are respectively inserted through different screws 7, will move in opposite directions due to the action of the threads. The moving blocks 10 are connected to the clamping plates 9 through the bent rods 8, so the movement of the moving blocks 10 will drive the bent rods 8, thereby causing the two clamping plates 9 to move towards or away from each other within the clamping frame 4. When it is necessary to fix the shock absorber body 11, the two clamping plates 9 move towards each other until the shock absorber body 11 placed in the clamping frame 4 is firmly clamped.

[0027] Fatigue testing execution: The testing motor 13 is connected to the designated testing equipment, which records the number of rotations of the disc 14. The testing motor 13 is started, and the disc 14 at the motor output end begins to rotate. The drive rod 15 on the periphery of the disc 14 slides in conjunction with the groove 19 on one side of the crossbar 17. As the disc 14 rotates, the drive rod 15 reciprocates within the groove 19. Because the crossbar 17 is pierced by the vertical rod 16 at both ends, and the lower end of the crossbar 17 is connected to the pressure plate 18, the reciprocating sliding of the drive rod 15 within the groove 19 causes the crossbar 17 to move up and down along the vertical rod 16, thereby causing the pressure plate 18 to reciprocate. During the lifting and lowering process, the pressure plate 18 continuously presses down on the shock absorber body 11 located below. Through multiple pressing operations, fatigue testing of the shock absorber body 11 is achieved.

[0028] Alternating detection switching: After one of the clamped shock absorber bodies 11 completes the detection, the first motor 2 is started. The first shaft at the output end of the first motor 2 rotates. Since the top block 3 is fixed to the top of the first shaft with screws, the top block 3 will rotate with the first shaft. After the first shaft drives the top block 3 to rotate 180 degrees, the other clamping component, which was originally located on one side, will move to the detection position below the pressure plate 18. At this time, the other shock absorber body 11 can be detected without reloading and reloading, thus improving detection efficiency.

[0029] By setting up two clamping components and a rotatable top block 3, after one shock absorber body 11 is tested, the first motor 2 is started to rotate the top block 3 180 degrees, which can quickly test the other shock absorber body 11. This avoids the tedious steps of unloading and reloading after each test in the traditional method, greatly saving time and improving the testing efficiency of shock absorbers.

[0030] The clamping assembly employs a second motor 5 to drive a screw 7 with a reverse thread structure, which can precisely control the movement of the two clamping plates 9, so that they can stably clamp the shock absorber body 11, ensuring that the shock absorber will not shake or shift during the testing process, thus ensuring the accuracy of the test results.

[0031] In this embodiment, the top block 3 is fixed to the top of the first rotating shaft by screws.

[0032] Easy to assemble and maintain: The top block 3 is fixed to the top of the first rotating shaft with screws. This connection method is simple and convenient. Whether it is the assembly of the top block 3 during the installation of the device, or the repair or replacement of the top block 3 in the later stage, it can be easily operated, reducing the difficulty of assembly and maintenance of the device.

[0033] In this embodiment, both the drive rod 15 and the vertical rod 16 are cylindrical structures.

[0034] Optimized component structure: Both the drive rod 15 and the vertical rod 16 are cylindrical structures. During the sliding and support process, the cylindrical structure has relatively small friction and smoother movement, which can ensure the stability of the pressure plate 18 during the lifting process, reduce jamming, and thus improve the stability and reliability of the detection process.

[0035] In this embodiment, a buffer pad is provided at the lower end of the pressure plate 18.

[0036] Protecting the shock absorber: A buffer pad is provided at the lower end of the pressure plate 18. When the pressure plate 18 presses down on the shock absorber body 11, the buffer pad can play a buffering role, avoiding direct hard contact between the pressure plate 18 and the shock absorber body 11, which would cause damage to the surface of the shock absorber. This ensures the service life of the shock absorber and makes the test results more reflective of the true performance of the shock absorber in actual use.

[0037] In this embodiment, the bottom end of the shock absorber body 11 contacts the surface of the test bench 1.

[0038] In this embodiment, the first motor 2, the second motor 5, and the detection motor 13 are all servo motors.

[0039] Precise motor control: The first motor 2, the second motor 5, and the detection motor 13 are all servo motors, which have precise speed and position control capabilities. In this device, it can precisely control the rotation angle of the first rotating shaft to ensure that the top block 3 rotates accurately 180 degrees; precisely control the rotation of the screw 7 of the second motor 5 to achieve precise clamping of the shock absorber by the clamping plate 9; and precisely control the number of rotations of the disc 14 of the detection motor 13 to ensure the accuracy and consistency of the detection and meet the high-precision requirements for fatigue testing of the shock absorber.

[0040] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A device for testing a shock absorber, comprising a test bench (1) and a shock absorber body (11), characterized in that: The lower end of the test bench (1) is provided with a first motor (2), the output end of the first motor (2) is provided with a first rotating shaft penetrating the test bench (1), the top end of the first rotating shaft is provided with a top block (3), and two clamping assemblies are symmetrically arranged at the two ends of the top block (3). The clamping assembly comprises a clamping frame (4), a second motor (5) and two clamping plates (9), the two clamping plates (9) clamp the shock absorber body (11) in the clamping frame (4), the outer ends of the clamping plates (9) are provided with bent rods (8) penetrating the clamping frame (4), the outer ends of the bent rods (8) are provided with moving blocks (10), the second motor (5) is fixed on one side of the clamping frame (4), the output end of the second motor (5) is provided with a second rotating shaft (6), two screw rods (7) with reverse threads are symmetrically arranged on the second rotating shaft (6), and the two screw rods (7) penetrate the two moving blocks (10) respectively. The upper end of the test bench (1) is provided with a fixing frame (12) and a cross rod (17), two vertical rods (16) are symmetrically arranged on one side of the fixing frame (12), the two ends of the cross rod (17) are penetrated by the vertical rods (16), the lower end of the cross rod (17) is provided with a pressing plate (18), one side of the cross rod (17) is provided with a sliding groove (19), the upper end of the fixing frame (12) is provided with a detection motor (13), the output end of the detection motor (13) is provided with a disc (14), and the periphery of the disc (14) is provided with a driving rod (15) in sliding fit with the sliding groove (19).

2. A device for testing shock absorbers according to claim 1, characterized in that: The top block (3) is fixed on the top end of the first rotating shaft by screws.

3. A device for testing shock absorbers according to claim 2, characterized in that: The driving rod (15) and the vertical rod (16) are both cylindrical structures.

4. A device for testing shock absorbers according to claim 3, characterized in that: The lower end of the pressing plate (18) is provided with a buffer pad.

5. A device for testing shock absorbers according to claim 4, characterized in that: The bottom end of the shock absorber body (11) contacts the surface of the test bench (1).

6. A device for testing a shock absorber according to claim 5, characterized in that: The first motor (2), the second motor (5) and the detection motor (13) are all servo motors.

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