A testing system for vehicle shock absorber

Abstract

The present invention relates to the field of shock absorber testing technology, and specifically to a testing system for a vehicle shock absorber, comprising a test bench, a shock absorber, a sliding rod and a device top, wherein the sliding rod is fixedly connected between the test bench and the device top, and a positioning fixture assembly is installed at the top end of the test bench and the bottom end of the device top, and two positioning fixture assemblies are symmetrically arranged up and down, and the two positioning fixture assemblies are respectively used to clamp and fix the upper and lower ends of the shock absorber, and the positioning fixture assembly comprises two clamping blocks, and the opposite surfaces of the two clamping blocks are fixedly connected with truncated cone blocks, and the two clamping blocks move the same distance at the same time, and the two clamping blocks move in opposite directions, and also comprises a test plate, and the sliding rod movably penetrates the surface of the test plate. The purpose of the present invention is to solve the problem that it is difficult to ensure that the existing shock absorber is fixed perpendicular to the vibration direction during the fixing process.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorber testing, in particular to a testing system for a vehicle shock absorber. Background Art

[0002] As an important component of automobiles and motorcycles, the main function of shock absorbers is to improve the driving comfort of vehicles and attenuate the vibration of the frame and body. When a car is driving on an uneven road, the spring is compressed or stretched, and the piston of the shock absorber moves up and down accordingly. During the up and down movement of the piston, the oil inside the shock absorber flows through a series of valves to generate damping force, thereby consuming vibration energy and converting it into heat energy and dissipating it into the atmosphere to achieve the purpose of vibration reduction. The working state of the shock absorber has a direct impact on the driving stability of cars and motorcycles and the life of other parts. Therefore, it is very important to keep the shock absorber in good condition.

[0003] The shock absorber test method is to set specific parameters such as frequency, amplitude and period, simulate long-period vibration at different speeds and frequencies, and the condition of constant displacement amplitude to evaluate the stability and reliability of the shock absorber. During the test, it is usually necessary to ensure the verticality of the shock absorber. If the shock absorber is tilted during installation, it will cause eccentric load, making the detected pressure value different from the actual pressure, affecting the accuracy of the test results. It is difficult to ensure that the existing shock absorber is fixed perpendicular to the vibration direction during the fixing process. For this reason, a test system for automotive shock absorbers is designed. Summary of the invention

[0004] The object of the present invention is to provide a testing system for a vehicle shock absorber, so as to solve the problem that it is difficult to ensure that the shock absorber is fixed perpendicular to the vibration direction during the fixing process.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A testing system for a vehicle shock absorber comprises a test bench, a shock absorber, a sliding rod and a device top, wherein the sliding rod is fixedly connected between the test bench and the device top, and positioning fixture assemblies are installed at the top end of the test bench and the bottom end of the device top, and two positioning fixture assemblies are symmetrically arranged up and down, and the two positioning fixture assemblies are respectively used to clamp and fix the upper and lower ends of the shock absorber, and the positioning fixture assembly comprises two clamping blocks, and the opposite surfaces of the two clamping blocks are fixedly connected with truncated cone blocks, and the two clamping blocks move the same distance at the same time, and the two clamping blocks move in opposite directions.

[0007] Preferably, a test plate is also included, the sliding rod movably penetrates the surface of the test plate, a limiting slide groove is provided on the top of the test bench, a first vibration block that can move up and down is installed in the limiting slide groove, the bottom end of the test plate is fixedly connected with a second vibration block, the first vibration block and the second vibration block are vertically arranged opposite each other, the top end of the first vibration block and the bottom end of the second vibration block are fixedly connected with arc-shaped clamping blocks, and the two arc-shaped clamping blocks are respectively clamped with the upper and lower ends of the shock absorber.

[0008] Preferably, the positioning fixture assembly also includes a track plate, a double-threaded rod and two sliding blocks. The double-threaded rod is rotatably connected to the inside of the track plate. The surface of the double-threaded rod has two sections of threads that are wound in opposite directions. The two sliding blocks are respectively located on the threads at both ends of the surface of the double-threaded rod, and the sliding blocks are threadedly connected to the double-threaded rod. The surface of the track plate is provided with a sliding groove for the sliding blocks to slide, and the two sliding blocks are respectively connected to the two clamping blocks.

[0009] Preferably, the clamping block and the sliding block are connected by a telescopic assembly, the track plate in the positioning fixture assembly on the surface of the test bench is fixedly connected to the test bench, the track plate in the positioning fixture assembly on the top surface of the equipment is fixedly connected to the top of the equipment, the surface of the test bench is provided with a first avoidance groove for the telescopic assembly to move left and right, and the surface of the test plate is provided with an avoidance hole for the telescopic assembly to move left and right.

[0010] Preferably, the telescopic assembly includes a telescopic sleeve and a telescopic rod, the telescopic rod and the clamping block are fixedly connected, the telescopic sleeve and the sliding block are fixedly connected, and the surface of each telescopic sleeve is provided with a telescopic groove for the telescopic rod to extend and retract.

[0011] Preferably, the top of the test bench and the bottom of the equipment top are fixedly connected with two support rods, the surface of each support rod is coaxially rotatably connected with a scale disk, the surface of each scale disk has scales distributed in a circular array, the top of the test bench and the bottom of the equipment top are fixedly connected with two pointers, each of the pointers is used in conjunction with a scale disk, and the telescopic sleeve moves the scale disk to rotate synchronously.

[0012] Preferably, the surface of each of the scale disks is rotatably connected to a connecting rod, and the connection position of the connecting rod is away from the center of the scale disk, the surface of each of the telescopic sleeves is fixedly connected to a connecting block, and one end of each of the connecting rods is rotatably connected to a connecting block.

[0013] Preferably, a first rotating arm assembly is installed inside the test bench, and the first rotating arm assembly is used to drive the first vibration block to move up and down. A second rotating arm assembly is installed at the bottom end of the top of the equipment, and the second rotating arm assembly is used to drive the test plate to move up and down.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting the two clamping blocks to move the same distance at the same time, and the two clamping blocks move in opposite directions, the end of the shock absorber is placed in the middle of the two clamping blocks. When the two upper truncated cone blocks are respectively pressed against the left and right sides of the upper circular hole of the shock absorber, and the two lower truncated cone blocks are respectively pressed against the left and right sides of the lower circular hole of the shock absorber, it can be ensured that the shock absorber is installed vertically on the equipment, which is conducive to ensuring that the shock absorber is in a vertical state when installed, and can prevent abnormal test results from occurring when the shock absorber is tilted;

[0016] 2. By setting a telescopic sleeve and a telescopic rod between the clamping block and the sliding block, when the shock absorber is subjected to vibration test, only the clamping block and the telescopic rod move up and down in coordination with the shock absorber vibration, while the track plate, the double-threaded rod, the sliding block and the telescopic sleeve are relatively immovable, which is conducive to preventing the double-threaded rod and the sliding block from vibrating up and down with the clamping block together with the shock absorber, causing the sliding block to slip on the surface of the double-threaded rod, resulting in the clamping block being loosened;

[0017] 3. By setting the scale disk and the pointer and observing whether the indexes of the pointers on the four scale disks are the same, it can be determined whether the shock absorber is set vertically. Including in the process of testing the shock absorber, by observing whether the indexes of the pointers on the four scale disks change, it can be determined whether the shock absorber has a lateral deviation, which is conducive to calibrating the verticality of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the present invention as a whole;

[0019] Figure 2 It is a front view schematic diagram of the overall cutaway structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 For the present invention Figure 2 The enlarged view of point B in the middle;

[0022] Figure 5 It is a schematic diagram of the front view of the structure of the test bench of the present invention;

[0023] Figure 6 It is a front view structural schematic diagram of the positioning fixture assembly of the present invention;

[0024] Figure 7 It is a schematic diagram of the rear view structure of the overall section of the present invention;

[0025] Figure 8For the present invention Figure 7 Enlarged view of point C in the middle;

[0026] Fig. 9 For the present invention Figure 7 The enlarged view of point D in the middle;

[0027] Fig.10 It is a schematic diagram of the side view structure of the test bench of the present invention;

[0028] Fig.11 It is a structural schematic diagram of the first rotating arm assembly of the present invention;

[0029] Fig.12 It is a schematic structural diagram of the second rotating arm assembly of the present invention.

[0030] In the figure: 1. test bench; 2. track plate; 3. first motor; 4. double threaded rod; 5. sliding block; 6. sliding groove; 7. telescopic sleeve; 8. telescopic groove; 9. telescopic rod; 10. clamping block; 11. truncated table block; 12. connecting block; 13. connecting rod; 14. graduated disc; 15. supporting rod; 16. pointer; 17. first avoidance groove; 18. limiting slide groove; 19. first vibration block; 20. first linkage rod; 21. first linkage disc; 22. second motor; 23. second avoidance groove; 24. arc block; 25. shock absorber; 26. sliding rod; 27. equipment top; 28. test plate; 29. ​​avoidance hole; 30. second vibration block; 31. auxiliary connecting block; 32. second linkage rod; 33. second linkage disc; 34. third motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 12 , the present invention provides a technical solution.

[0033] A vehicle shock absorber testing system comprises a test bench 1, a shock absorber 25, a sliding rod 26 and a device top 27, wherein the sliding rod 26 is fixedly connected between the test bench 1 and the device top 27, and a positioning fixture assembly is installed at the top of the test bench 1 and the bottom of the device top 27, and the two positioning fixture assemblies are symmetrically arranged up and down, and the two positioning fixture assemblies are respectively used to clamp and fix the upper and lower ends of the shock absorber 25, and the positioning fixture assembly comprises two clamping blocks 10, and the opposite surfaces of the two clamping blocks 10 are fixedly connected with a truncated cone block 11, and the two clamping blocks 10 move the same distance at the same time, and the two clamping blocks 10 move in opposite directions, and the end of the shock absorber 25 is placed in the middle of the two clamping blocks 10, so that the left clamping block 11 is fixedly connected to the left clamping block 11, and ... The holding block 10 moves to the right, and the clamping block 10 on the right moves to the left, until the two truncated cone blocks 11 respectively press into the left and right sides of the circular hole at the end of the shock absorber 25, thereby fixing the shock absorber 25. Since the displacements of the two clamping blocks 10 are the same when they move, and the upper and lower positioning fixture assemblies are symmetrically arranged, when the upper two truncated cone blocks 11 respectively press into the left and right sides of the upper circular hole of the shock absorber 25, and the lower two truncated cone blocks 11 respectively press into the left and right sides of the lower circular hole of the shock absorber 25, it can ensure that the shock absorber 25 is installed vertically on the equipment, which is conducive to ensuring that the shock absorber 25 is in a vertical state when installed, and can prevent abnormal test results from occurring when the shock absorber 25 is tilted.

[0034] The test bench 1 also includes a test plate 28, a sliding rod 26 movably penetrates the surface of the test plate 28, a limiting slide groove 18 is provided on the top of the test bench 1, a first vibration block 19 which can move up and down is installed in the limiting slide groove 18, a second vibration block 30 is fixedly connected to the bottom end of the test plate 28, the first vibration block 19 and the second vibration block 30 are arranged vertically opposite to each other, the top end of the first vibration block 19 and the bottom end of the second vibration block 30 are fixedly connected with an arc-shaped clamping block 24, the two arc-shaped clamping blocks 24 are respectively clamped with the upper and lower ends of the shock absorber 25, and the vibration test is performed by applying force from the bottom end of the shock absorber 25 by moving the first vibration block 19 up and down, and the vibration test is performed by applying force from the top end of the shock absorber 25 by moving the test plate 28 and the second vibration block 30 up and down, and the vibration amplitude can be controlled to simulate the vibration of the shock absorber 25 when the wheel contacts the ground and the vibration of the shock absorber 25 by the vehicle body.

[0035] The positioning fixture assembly also includes a track plate 2, a double-threaded rod 4 and two sliding blocks 5. The double-threaded rod 4 is rotatably connected to the inside of the track plate 2. The surface of the double-threaded rod 4 has two sections of threads that are wound in opposite directions. The two sliding blocks 5 are respectively located on the threads at both ends of the surface of the double-threaded rod 4, and the sliding blocks 5 are threadedly connected to the double-threaded rod 4. The surface of the track plate 2 is provided with a sliding groove 6 for the sliding blocks 5 to slide. The two sliding blocks 5 are respectively connected to the two clamping blocks 10. Since the sliding blocks 5 are threadedly connected to the double-threaded rod 4, and the two sliding blocks 5 are respectively located on two sections of threads that are wound in opposite directions on the surface of the double-threaded rod 4, by rotating the double-threaded rod 4, the two sliding blocks 5 move toward or away from each other at the same time, and the two sliding blocks 5 move the same distance, ensuring that the shock absorber 25 is in the middle position when being fixed.

[0036] The surface of the track plate 2 is fixedly connected to the surface of the first motor 3, and the output end of the first motor 3 is coaxially fixedly connected to one end of the double-threaded rod 4. By starting the first motor 3, the double-threaded rod 4 is driven to rotate, and the forward and reverse rotation of the double-threaded rod 4 can be controlled.

[0037] The clamping block 10 is connected to the sliding block 5 through a telescopic assembly. The track plate 2 in the positioning fixture assembly on the surface of the test bench 1 is fixedly connected to the test bench 1. The track plate 2 in the positioning fixture assembly on the surface of the equipment top 27 is fixedly connected to the equipment top 27. The surface of the test bench 1 is provided with a first avoidance groove 17 for the telescopic assembly to move left and right. The surface of the test plate 28 is provided with an avoidance hole 29 for the telescopic assembly to move left and right. The telescopic assembly includes a telescopic sleeve 7 and a telescopic rod 9. The telescopic rod 9 is fixedly connected to the clamping block 10. The telescopic sleeve 7 is fixedly connected to the sliding block 5. The surface of each telescopic sleeve 7 is provided with a first avoidance groove 17 for the telescopic assembly to move left and right. The telescopic slot 8 for the telescopic rod 9 is respectively fixedly connected to the test bench 1 and the equipment top 27 by setting two track plates 2. The clamping block 10 is connected with the sliding block 5 by the telescopic sleeve 7, the telescopic rod 9, so that when the shock absorber 25 is subjected to the vibration test, only the clamping block 10 and the telescopic rod 9 move up and down in coordination with the vibration of the shock absorber 25, while the track plate 2, the double-threaded rod 4, the sliding block 5, and the telescopic sleeve 7 are relatively immobile, which is conducive to preventing the double-threaded rod 4 and the sliding block 5 from vibrating up and down with the clamping block 10 together with the shock absorber 25, so that the sliding block 5 slips on the surface of the double-threaded rod 4, resulting in the clamping block 10 being clamped loose.

[0038] A first rotating arm assembly is installed inside the test bench 1, and the first rotating arm assembly is used to drive the first vibration block 19 to move up and down. A second rotating arm assembly is installed at the bottom end of the equipment top 27, and the second rotating arm assembly is used to drive the test plate 28 to move up and down.

[0039] The first rotating arm assembly includes a second motor 22, a first linkage disc 21 and a first linkage rod 20. The second motor 22 is fixedly connected to the surface of the test bench 1. The first linkage disc 21 is rotatably connected to the surface of the test bench 1. The output end of the second motor 22 is coaxially fixedly connected to the first linkage disc 21. One end of the first linkage rod 20 is rotatably connected to the first linkage disc 21, and the connection position is far away from the center of the first linkage disc 21. The other end of the first linkage rod 20 is rotatably connected to the first vibration block 19. The surface of the test bench 1 The surface is provided with a second avoidance groove 23 for the first linkage rod 20 to move. By starting the second motor 22, the first linkage disc 21 is driven to rotate. The rotation of the first linkage disc 21 drives one end of the first linkage rod 20 to make a circular motion. Since the other end of the first linkage rod 20 is connected to the first vibration block 19, and the first vibration block 19 is confined in the limiting slide groove 18 and can only move up and down, when one end of the first linkage rod 20 makes a circular motion, the other end will drive the first vibration block 19 to move up and down along the track of the limiting slide groove 18.

[0040] The second rotating arm assembly includes a third motor 34, a second linkage disc 33, a second linkage rod 32 and an auxiliary connecting block 31. The third motor 34 is fixedly connected to the surface of the equipment top 27, and the second linkage disc 33 is rotatably connected to the surface of the equipment top 27. The output end of the third motor 34 is coaxially fixedly connected to the second linkage disc 33. One end of the second linkage rod 32 is rotatably connected to the second linkage disc 33, and the connection position is far away from the center of the second linkage disc 33. The other end of the second linkage rod 32 is rotatably connected to the auxiliary connecting block 31. The auxiliary connecting block 31 It is fixedly connected to the test plate 28, and a third avoidance groove is provided on the surface of the equipment top 27 for the second linkage rod 32 to move. By starting the third motor 34, the second linkage disc 33 is driven to rotate, and the rotation of the second linkage disc 33 drives one end of the second linkage rod 32 to make a circular motion. Since the other end of the second linkage rod 32 is connected to the auxiliary connecting block 31, and the test plate 28 is limited by the sliding rod 26 to move up and down, when one end of the second linkage rod 32 makes a circular motion, the other end will drive the test plate 28 to move up and down along the surface of the sliding rod 26.

[0041] The top of the test bench 1 and the bottom of the equipment top 27 are fixedly connected to two support rods 15, and the surface of each support rod 15 is coaxially rotatably connected to a scale disk 14, and the surface of each scale disk 14 has a scale distributed in a ring array. The top of the test bench 1 and the bottom of the equipment top 27 are fixedly connected to two pointers 16, and each pointer 16 is used in conjunction with a scale disk 14. The telescopic sleeve 7 moves the scale disk 14 to rotate synchronously. The surface of each scale disk 14 is rotatably connected to a connecting rod 13, and the connection position of the connecting rod 13 is far away from the center of the scale disk 14. The surface of each telescopic sleeve 7 is fixedly connected to a connecting block 12, and each connecting rod 1 One end of each of the four graduated disks 14 is rotatably connected to a connecting block 12. By setting a graduated disk 14 and a pointer 16, when the telescopic sleeve 7 moves, one end of the connecting rod 13 is pulled. The movement of the connecting rod 13 drives the graduated disk 14 to rotate. By observing the rotation angle of the graduated disk 14, the moving distance of the telescopic sleeve 7 can be known. By observing whether the indexes of the pointers 16 on the four graduated disks 14 are the same, it can be determined whether the shock absorber 25 is vertically arranged. In the process of testing the shock absorber 25, by observing whether the indexes of the pointers 16 on the four graduated disks 14 change, it can be determined whether the shock absorber 25 has a lateral deviation, which is conducive to calibrating the verticality of the shock absorber 25.

[0042] The specific scheme is as follows: the upper and lower ends of the shock absorber 25 are respectively placed in the middle of the upper and lower arc-shaped blocks 24, and the upper and lower double-threaded rods 4 are respectively driven to rotate by starting the first motor 3 on the top 27 of the device and the first motor 3 in the test bench 1. The double-threaded rods 4 are rotated to make the two sliding blocks 5 on the double-threaded rods 4 move toward each other, and the movement of the two sliding blocks 5 will respectively drive the two telescopic sleeves 7 to move toward each other, and the two telescopic sleeves 7 respectively drive the two telescopic rods 9 to move toward each other, and the two telescopic rods 9 respectively drive the two clamping blocks 10 to move toward each other, and the two clamping blocks 10 respectively drive the two truncated cone blocks 11 to move toward each other, until the two truncated cone blocks 11 respectively press against the left and right sides of the circular hole at the end of the shock absorber 25, thereby fixing the shock absorber 25;

[0043] During the movement of the telescopic sleeve 7, one end of the connecting rod 13 will be pulled to drive the connecting rod 13 to move. Since the other end of the connecting rod 13 is connected to the scale disk 14, the movement of the connecting rod 13 will drive the scale disk 14 to rotate. By observing the rotation angle of the scale disk 14, the moving distance of the telescopic sleeve 7 can be known. When the upper two truncated cone blocks 11 fix the upper end of the shock absorber 25 and the lower two truncated cone blocks 11 fix the lower end of the shock absorber 25, by observing whether the indexes of the pointers 16 on the four scale disks 14 are the same, it can be determined whether the shock absorber 25 is vertically arranged, including in the process of testing the shock absorber 25, by observing whether the indexes of the pointers 16 on the four scale disks 14 change, it can be determined whether the shock absorber 25 has a lateral deviation.

[0044] During the test, the second motor 22 is started to drive the first linkage disc 21 to rotate. The rotation of the first linkage disc 21 drives one end of the first linkage rod 20 to make a circular motion. Since the other end of the first linkage rod 20 is connected to the first vibration block 19, and the first vibration block 19 is limited in the limiting slide groove 18 and can only move up and down, when one end of the first linkage rod 20 makes a circular motion, the other end will drive the first vibration block 19 to move up and down along the track of the limiting slide groove 18. When the first vibration block 19 moves up and down, it will drive the arc block 24, the bottom end of the shock absorber 25, the clamping block 10, the truncated table block 11, and the telescopic rod 9 to move up and down, so as to test the durability of the shock absorber 25.

[0045] During the test, by starting the third motor 34, the second linkage disc 33 is driven to rotate. The rotation of the second linkage disc 33 drives one end of the second linkage rod 32 to make a circular motion. Since the other end of the second linkage rod 32 is connected to the auxiliary connecting block 31, and the test plate 28 is limited by the sliding rod 26 to only move up and down, when one end of the second linkage rod 32 makes a circular motion, the other end will drive the test plate 28 to move up and down along the surface of the sliding rod 26. When the test plate 28 moves up and down, it will drive the second vibration block 30 to move up and down. The up and down movement of the second vibration block 30 will drive the top of the shock absorber 25 to move up and down. The rest is the same as the up and down movement of the first vibration block 19. The durability of the shock absorber 25 is tested. By controlling the speed of the second motor 22, it can be used to make the up and down movement of the lower end of the shock absorber 25 simulate the vibration when the wheel contacts the ground. By controlling the speed of the third motor 34, it can be used to make the up and down movement of the upper end of the shock absorber 25 simulate the vibration of the vehicle body.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle shock absorber testing system, comprising a test bench (1), a shock absorber (25), a sliding rod (26) and a device top (27), characterized in that: The sliding rod (26) is fixedly connected between the test bench (1) and the top of the device (27); the top of the test bench (1) and the bottom of the top of the device (27) are both installed with positioning fixture assemblies; the two positioning fixture assemblies are symmetrically arranged up and down; the two positioning fixture assemblies are respectively used to clamp and fix the upper and lower ends of the shock absorber (25); the positioning fixture assembly includes two clamping blocks (10); the opposite surfaces of the two clamping blocks (10) are fixedly connected with a truncated cone block (11); the two clamping blocks (10) move the same distance at the same time, and the two clamping blocks (10) move in opposite directions; It also includes a test plate (28), the sliding rod (26) movably penetrates the surface of the test plate (28), a limit slide groove (18) is provided on the top of the test table (1), a first vibration block (19) that can move up and down is installed in the limit slide groove (18), the bottom end of the test plate (28) is fixedly connected to a second vibration block (30), the first vibration block (19) and the second vibration block (30) are arranged vertically opposite to each other, the top end of the first vibration block (19) and the bottom end of the second vibration block (30) are both fixedly connected to arc-shaped clamping blocks (24), and the two arc-shaped clamping blocks (24) are respectively clamped to the upper and lower ends of the shock absorber (25); The positioning fixture assembly also includes a track plate (2), a double-threaded rod (4) and two sliding blocks (5); the double-threaded rod (4) is rotatably connected to the inside of the track plate (2); the surface of the double-threaded rod (4) has two sections of threads wound in opposite directions; the two sliding blocks (5) are respectively located on the threads at both ends of the surface of the double-threaded rod (4); the sliding blocks (5) are threadedly connected to the double-threaded rod (4); the surface of the track plate (2) is provided with a sliding groove (6) for the sliding blocks (5) to slide; the two sliding blocks (5) are respectively connected to the two clamping blocks (10); The clamping block (10) and the sliding block (5) are connected via a telescopic assembly, the track plate (2) in the positioning fixture assembly on the surface of the test bench (1) is fixedly connected to the test bench (1), the track plate (2) in the positioning fixture assembly on the surface of the device top (27) is fixedly connected to the device top (27), the surface of the test bench (1) is provided with a first avoidance groove (17) for the telescopic assembly to move left and right, and the surface of the test plate (28) is provided with an avoidance hole (29) for the telescopic assembly to move left and right; The telescopic assembly comprises a telescopic sleeve (7) and a telescopic rod (9), the telescopic rod (9) and the clamping block (10) are fixedly connected, the telescopic sleeve (7) and the sliding block (5) are fixedly connected, and the surface of each telescopic sleeve (7) is provided with a telescopic groove (8) for the telescopic rod (9) to be telescoped. The top of the test bench (1) and the bottom of the equipment top (27) are both fixedly connected with two support rods (15), the surface of each support rod (15) is coaxially rotatably connected with a scale disk (14), the surface of each scale disk (14) has scales distributed in a ring array, the top of the test bench (1) and the bottom of the equipment top (27) are both fixedly connected with two pointers (16), each of the pointers (16) is used in conjunction with a scale disk (14), and the telescopic sleeve (7) moves the scale disk (14) to rotate synchronously; The surface of each of the graduated disks (14) is rotatably connected to a connecting rod (13), and the connection position of the connecting rod (13) is away from the center of the graduated disk (14). The surface of each of the telescopic sleeves (7) is fixedly connected to a connecting block (12), and one end of each of the connecting rods (13) is rotatably connected to a connecting block (12).

2. A vehicle shock absorber testing system according to claim 1, characterized in that: A first rotating arm assembly is installed inside the test bench (1), and the first rotating arm assembly is used to drive the first vibration block (19) to move up and down. A second rotating arm assembly is installed at the bottom end of the device top (27), and the second rotating arm assembly is used to drive the test plate (28) to move up and down.

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