A shock absorber full-range testing device and method

Abstract

This invention relates to the field of shock absorber testing technology, specifically to a shock absorber full-range testing device and method, including an end fixing component, an angle deflection component, and a test drive component. The end fixing component includes a vertical plate, a sliding plate, a sleeve, and a mounting shaft. The sliding plate is slidably connected to the vertical plate. A strip groove is formed on one side of the sliding plate, and an arc groove is formed on one side of the vertical plate. The sleeve passes through the strip groove and the arc groove and is slidably connected to them. The mounting shaft is detachably connected to the sleeve and is used to fix the end of the shock absorber body. The angle deflection component is used to drive the sliding plate to slide. In order to facilitate the adjustment of the angle and stroke of the shock absorber, the present invention uses paired arc grooves in conjunction with the counter-sliding sliding plate to drive the shock absorber to deflect smoothly around its own center, accurately simulating different installation tilt angles of the vehicle and improving the test accuracy. At the same time, by using the hydraulic rod to adjust the rotation radius of the pin, the test stroke of the shock absorber can be flexibly changed to meet diverse test needs.

Description

Technical Field

[0001] This invention relates to the field of shock absorber testing technology, and specifically to a shock absorber full-range testing device and method. Background Technology

[0002] Shock absorbers are a crucial component of a vehicle's suspension system. They primarily generate damping force through internal fluid throttling, absorbing and dissipating vibration energy from the road surface during driving. This effectively suppresses vehicle body and wheel bounce, ensuring smooth ride and handling stability. Current mainstream products include dual-tube hydraulic and single-tube pneumatic types, and various variable-damping intelligent shock absorbers are gradually being adopted. Shock absorber testing is conducted using specialized test bench equipment. A drive mechanism moves the shock absorber back and forth, simulating real vehicle operation, thereby testing the product's dynamic response characteristics and reliability.

[0003] Currently, conventional shock absorber testing devices mostly use fixed fixtures to position the workpiece at both ends, making it difficult to flexibly adjust the testing angle and extension stroke. In vehicle assembly scenarios, different vehicle models require shock absorbers with different installation angles, and vehicles also experience complex operating conditions such as axial travel variations, different movement speeds, operating frequencies, lateral loads, and large-stroke impacts during operation. Traditional fixed installation structures cannot fully reproduce these actual working conditions, making it difficult to comprehensively collect various performance parameters and thus unable to fully assess the overall performance of the shock absorber. Summary of the Invention

[0004] The purpose of this invention is to provide a shock absorber full-range testing device and method, which facilitates the adjustment of the shock absorber's angle and stroke, thereby improving the comprehensiveness and accuracy of the test.

[0005] To achieve this objective, the present invention adopts the following technical solution: A shock absorber full-range testing device is provided, including an end fixing component, an angle deflection component, and a test drive component. The end fixing component includes a vertical plate, a sliding plate, a sleeve, and a mounting shaft. The sliding plate is slidably connected to the vertical plate. A strip groove is formed on one side of the sliding plate, and an arc groove is formed on one side of the vertical plate. The sleeve passes through the strip groove and the arc groove and is slidably connected to them. The mounting shaft is detachably connected to the sleeve and is used to fix the end of the shock absorber body. The angle deflection component is used to drive the sliding plate to slide. The test drive component is used to drive the vertical plate to reciprocate up and down.

[0006] Preferably, in order to meet the testing requirements of shock absorber bodies of different lengths, there are multiple arc grooves and multiple sleeves, with the arc centers of the multiple arc grooves coinciding and evenly distributed.

[0007] Preferably, in order to keep the shock absorber body stationary during rotation, the present invention further includes a frame and a column. The column is fixedly connected to the inner wall of the frame. The number of end fixing components is a pair. The column is slidably connected to one of the upright plates and fixedly connected to the other upright plate. The arc-shaped grooves on the two upright plates have the same arc center and are arranged along the same circumferential trajectory.

[0008] Preferably, considering the need for the two ends of the shock absorber body to deflect synchronously in opposite directions, the angle deflection assembly includes a pair of screws, a pair of worm gears, a pair of worms, a drive shaft, and a first motor. The screws are rotatably connected to the vertical plate and threadedly connected to the sliding plate. The threads on the two screws are in opposite directions. The worm gears are coaxially connected to the screws and mesh with each other. The drive shaft is rotatably connected to the frame, and the first motor is fixedly connected to the frame. The output shaft of the first motor is coaxially connected to the drive shaft, and the drive shaft is coaxially connected to the worms.

[0009] Preferably, in order to enable the drive shaft and the worm to rotate coaxially while sliding relative to each other, a pair of limiting rings are fixedly connected to one end of one of the vertical plates. The limiting rings are slidably connected to the drive shaft and abut against the worm. A protrusion is fixedly connected to the inner wall of the worm, and a sliding groove is opened on one side of the drive shaft. The sliding groove is slidably connected to the protrusion.

[0010] Preferably, in order to realize the upright plate and reciprocating lifting, the test drive assembly includes a turntable, a pin, a rack, a missing gear, and a limit rod. The pin is slidably installed at the eccentric part of the turntable. The rack is fixedly connected to one of the upright plates and slidably connected to the test stand. The rack meshes with the missing gear and the missing gear is rotatably connected to the test stand. The limit rod is fixedly connected to the missing gear. A long groove is opened on one side of the limit rod and slidably connected to the pin.

[0011] Preferably, considering the need to adjust the lifting stroke of the upright plate, the test drive assembly also includes a second motor and a first hydraulic rod. The second motor is fixedly connected to the test stand, the output shaft of the second motor is coaxially connected to the turntable, the first hydraulic rod is fixedly connected to the turntable, the telescopic end of the first hydraulic rod is fixedly connected to the pin, and a limit groove is provided on one side of the turntable, with the limit groove slidingly connected to the pin.

[0012] Preferably, in order to stably fix the shock absorber body, the mounting shaft includes a threaded tube, a nut, and a protrusion. One end of the threaded tube is inserted into the sleeve, the nut is threadedly connected to the threaded tube, and the nut and the sleeve abut against each other. The other end of the threaded tube is inserted into the bushing at the end of the shock absorber body, the protrusion is slidably connected to the threaded tube, and the protrusion abuts against the bushing at the end of the shock absorber body.

[0013] Preferably, in order to make the protrusion abut against the bushing at the end of the shock absorber body, the mounting shaft also includes a spring, a second hydraulic rod and a push block. One end of the spring is fixedly connected to the inner wall of the threaded tube, and the other end of the spring is fixedly connected to the protrusion. The second hydraulic rod is fixedly connected to the threaded tube, and the telescopic end of the second hydraulic rod is fixedly connected to the push block. The push block and the protrusion abut against each other, and the side of the push block near the protrusion has a slope structure.

[0014] This invention also provides a method for testing the entire range of a shock absorber, comprising the following steps: Step 1: Based on the length of the shock absorber body to be tested, insert two threaded tubes into two sleeves respectively and fix them, then put the bushings at both ends of the shock absorber body onto two mounting shafts respectively, and fix them by the protrusions on the mounting shafts abutting against the bushings; Step 2: Through the set angle deflection component, drive the two sliding plates to slide in opposite directions simultaneously, so that the two ends of the shock absorber body deflect in opposite directions respectively; Step 3: Activate the test drive component to drive the rack to slide up and down reciprocally, causing one of the vertical plates to slide back and forth while the other vertical plate remains stationary, thereby achieving the effect of driving the shock absorber to reciprocate and extend; Step 4: Push the pin along the limiting groove through the second hydraulic rod to adjust the pin's rotation radius, and then rotate the turntable to adjust the extension and retraction stroke of the shock absorber body.

[0015] The beneficial effects of this invention are: 1. This invention uses paired arc-shaped grooves in conjunction with a sliding plate that slides in the opposite direction to drive the shock absorber body to rotate smoothly around its own center, accurately simulating different installation tilt angles of the vehicle, improving test accuracy, and the structural layout can ensure that no additional expansion or contraction occurs during the rotation of the shock absorber body, avoiding test data distortion. At the same time, multiple sets of arc-shaped grooves are compatible with shock absorbers of different models and lengths, making the equipment highly versatile.

[0016] 2. This invention adopts a transmission structure combining an electric motor with an eccentric turntable, a gear, and a rack to stably drive the shock absorber body to perform reciprocating telescopic motion, simulating the dynamic load of a real vehicle. Furthermore, by using a hydraulic rod to adjust the rotation radius of the pin, the test stroke of the shock absorber body can be flexibly changed to meet diverse testing needs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0019] Figure 2This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 .

[0021] Figure 4 This is an exploded view of the stand structure of the present invention.

[0022] Figure 5 This is a structural breakdown diagram of the angle deflection component of the present invention.

[0023] Figure 6 yes Figure 4 Enlarged view of the structure at point A in the middle.

[0024] Figure 7 This is the structural decomposition of the test-driven component of the present invention. Figure 1 .

[0025] Figure 8 This is the structural decomposition of the test-driven component of the present invention. Figure 2 .

[0026] Figure 9 This is an exploded view of the mounting shaft structure of the present invention.

[0027] In the picture: 1. End fixing assembly; 10. Vertical plate; 100. Arc groove; 11. Slide plate; 110. Strip groove; 12. Sleeve; 13. Mounting shaft; 130. Threaded pipe; 131. Nut; 132. Protrusion; 133. Spring; 134. Second hydraulic rod; 135. Push block; 14. Limiting ring; 2. Angle deflection assembly; 20. Screw; 21. Worm gear; 22. Worm; 23. Drive shaft; 230. Slide groove; 24. First motor; 25. Protrusion; 3. Test drive assembly; 30. Turntable; 300. Limiting groove; 31. Pin; 32. Rack; 33. Gear missing; 34. Limiting rod; 340. Long groove; 35. Second motor; 36. First hydraulic rod; 4. Shock absorber body; 40. Stand; 41. Column. Detailed Implementation

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figures 1 to 9 As shown: A shock absorber full-range testing device includes an end fixing component 1, an angle deflection component 2, and a test drive component 3. The end fixing component 1 includes a vertical plate 10, a sliding plate 11, a sleeve 12, and a mounting shaft 13. The sliding plate 11 is slidably connected to the vertical plate 10. A strip groove 110 is provided on one side of the sliding plate 11, and an arc groove 100 is provided on one side of the vertical plate 10. The sleeve 12 passes through the strip groove 110 and the arc groove 100 and is slidably connected to them. The mounting shaft 13 is detachably connected to the sleeve 12. The mounting shaft 13 is used to fix the end of the shock absorber body 4. The angle deflection component 2 is used to drive the sliding plate 11 to slide. The test drive component 3 is used to drive the vertical plate 10 to reciprocate up and down.

[0033] When testing the shock absorber body 4, the mounting shaft 13 is first inserted into the sleeve 12, and the bushings at both ends are respectively fitted onto the outer periphery of the two mounting shafts 13 and fixed. Then, the angle deflection component 2 drives the sliding plate 11 to slide horizontally on the upright plate 10. At this time, the sleeve 12 slides in an arc along the arc groove 100 and the strip groove 110, and the two sliding plates 11 move in opposite directions, causing the shock absorber body 4 to deflect around its own center, thereby adjusting it to the angle required for actual installation. Finally, the test drive component 3 drives one of the upright plates 10 to slide up and down reciprocally, and further drives the shock absorber body 4 to perform telescopic movement through the mounting shaft 13, realizing the test operation. This can accurately simulate the multi-dimensional dynamic load of the shock absorber body 4 under multi-angle installation states, improving the comprehensiveness and accuracy of the test.

[0034] like Figures 1 to 5 As shown: There are multiple arc-shaped grooves 100 and multiple sleeves 12. The arc centers of the multiple arc-shaped grooves 100 coincide and are distributed at equal intervals. By opening multiple arc-shaped grooves 100 on the vertical plate 10, it is possible to adapt to the installation requirements of shock absorber bodies 4 of different models and lengths.

[0035] like Figures 1 to 4 As shown: The present invention also includes a platform 40 and a column 41. The column 41 is fixedly connected to the inner wall of the platform 40. The number of end fixing components 1 is a pair. The column 41 is slidably connected to one of the upright plates 10 and fixedly connected to the other upright plate 10. The arc grooves 100 on the two upright plates 10 have the same arc center and are arranged along the same circumferential trajectory.

[0036] One of the upright plates 10 is fixedly connected to the column 41 and remains stationary, while the other upright plate 10 slides along the column 41. Simultaneously, it moves the bushing at the end of the shock absorber body 4 via the mounting shaft 13, thus enabling the testing operation. The arc-shaped grooves 100 of the two upright plates 10 are arranged in pairs, ensuring that the center of the shock absorber body 4 remains at the center of the arc of the arc-shaped groove 100 after installation, preventing expansion and contraction during deflection that could affect the test results.

[0037] like Figures 1 to 6 As shown: The angle deflection assembly 2 includes a pair of screws 20, a pair of worm gears 21, a pair of worms 22, a drive shaft 23, and a first motor 24. The screws 20 are rotatably connected to the vertical plate 10 and threadedly connected to the slide plate 11. The threads on the two screws 20 are in opposite directions. The worm gears 21 are coaxially connected to the screws 20 and mesh with the worms 22. The drive shaft 23 is rotatably connected to the frame 40. The first motor 24 is fixedly connected to the frame 40. The output shaft of the first motor 24 is coaxially connected to the drive shaft 23, and the drive shaft 23 is coaxially connected to the worms 22.

[0038] One of the upright plates 10 has a pair of limiting rings 14 fixedly connected to one end. The limiting rings 14 are slidably connected to the drive shaft 23. The limiting rings 14 and the worm gear 22 abut against each other. The inner wall of the worm gear 22 is fixedly connected to a protrusion 25. A groove 230 is opened on one side of the drive shaft 23. The groove 230 is slidably connected to the protrusion 25.

[0039] The first motor 24 is energized, and its output shaft drives the transmission shaft 23 to rotate, which in turn drives the worm gear 22 to rotate synchronously. Through the meshing transmission between the worm gear 22 and the worm wheel 21, the screw 20 is driven to rotate. Through the threaded transmission between the screw 20 and the slide plate 11, the two slide plates 11 are driven to slide in opposite directions simultaneously, thereby causing the shock absorber body 4 to deflect around the center to a suitable angle. When the vertical plate 10 slides back and forth, the limiting ring 14 pushes the worm gear 22 to slide vertically along the transmission shaft 23 synchronously, so that it always maintains meshing with the worm wheel 21. This ensures that the slide plate 11 can both follow the vertical plate 10 to move for testing and slide relative to the vertical plate 10 to adjust its angle.

[0040] like Figures 1 to 8 As shown: The test drive assembly 3 includes a turntable 30, a pin 31, a rack 32, a missing gear 33, and a limiting rod 34. The pin 31 is slidably mounted on the eccentric part of the turntable 30. The rack 32 is fixedly connected to one of the upright plates 10 and slidably connected to the platform 40. The rack 32 meshes with the missing gear 33 and the missing gear 33 is rotatably connected to the platform 40. The limiting rod 34 is fixedly connected to the missing gear 33. A long groove 340 is provided on one side of the limiting rod 34 and slidably connected to the pin 31.

[0041] The test drive assembly 3 also includes a second motor 35 and a first hydraulic rod 36. The second motor 35 is fixedly connected to the stand 40. The output shaft of the second motor 35 is coaxially connected to the turntable 30. The first hydraulic rod 36 is fixedly connected to the turntable 30. The telescopic end of the first hydraulic rod 36 is fixedly connected to the pin 31. A limit groove 300 is provided on one side of the turntable 30. The limit groove 300 is slidably connected to the pin 31.

[0042] The second motor 35 is energized, and its output shaft drives the turntable 30 to rotate, which in turn drives the pin 31 to rotate. Since the pin 31 is located eccentrically on the turntable 30, when the pin 31 rotates, it drives the gear 33 to reciprocate through the sliding engagement of the long slot 340 with the pin 31. Through the meshing transmission between the gear 33 and the rack 32, the rack 32 reciprocates, thereby driving the upright plate 10 to slide along the platform 40, achieving the extension and retraction test of the shock absorber body 4. Furthermore, by activating the first hydraulic rod 36, its extension end pushes the pin 31 to slide along the limiting slot 300 to a suitable position, thereby adjusting the rotation radius of the pin 31 and also achieving the effect of adjusting the extension and retraction stroke of the shock absorber body 4.

[0043] like Figures 1 to 9 As shown: The mounting shaft 13 includes a threaded tube 130, a nut 131, and a protrusion 132. One end of the threaded tube 130 is inserted into the sleeve 12. The nut 131 is threaded into the threaded tube 130 and abuts against the sleeve 12. The other end of the threaded tube 130 is inserted into the bushing at the end of the shock absorber body 4. The protrusion 132 is slidably connected to the threaded tube 130 and abuts against the bushing at the end of the shock absorber body 4.

[0044] The mounting shaft 13 also includes a spring 133, a second hydraulic rod 134, and a push block 135. One end of the spring 133 is fixedly connected to the inner wall of the threaded tube 130, and the other end of the spring 133 is fixedly connected to the protrusion 132. The second hydraulic rod 134 is fixedly connected to the threaded tube 130, and the telescopic end of the second hydraulic rod 134 is fixedly connected to the push block 135. The push block 135 and the protrusion 132 abut against each other, and the side of the push block 135 near the protrusion 132 has a sloping structure.

[0045] The threaded tube 130 is passed through the sleeve 12 and threadedly connected to the nut 131, so that the nut 131 and the threaded tube 130 abut against both sides of the sleeve 12, thus fixing the mounting shaft 13. Then, the bushing at the end of the shock absorber body 4 is fitted around the threaded tube 130, with the diameter of the threaded tube 130 slightly smaller than the inner diameter of the bushing to prevent installation difficulties due to excessive resistance. Next, the second hydraulic rod 134 is activated, its telescopic end pushing the push block 135 horizontally. Through its inclined structure on one side, the push block 135 abuts against the protrusion 132, causing the protrusion 132 to gradually slide out of the threaded tube 130 and against the inner wall of the bushing, thereby firmly locking the bushing onto the mounting shaft 13 and preventing slippage during testing. At this time, the spring 133 is in a compressed state. After the test is completed, the push block 135 resets, and the spring 133 rebounds, pushing the protrusion 132 to slide back to its original position, facilitating the removal of the shock absorber body 4 from the mounting shaft 13.

[0046] This embodiment also provides a method for testing the entire range of a shock absorber, including the following steps: Step 1: According to the length of the shock absorber body 4 to be tested, insert two threaded tubes 130 into two sleeves 12 and fix them. Then, put the bushings at both ends of the shock absorber body 4 onto two mounting shafts 13. Fix them by having the protrusions 132 on the mounting shafts 13 abut against the bushings. Step 2: Drive the two sliding plates 11 to slide in opposite directions simultaneously through the set angle deflection component 2, so that the two ends of the shock absorber body 4 deflect in opposite directions. Step 3: Make the test drive component 3 work, drive the rack 32 to slide up and down, drive one of the upright plates 10 to slide back and forth, while the other upright plate 10 remains stationary, so as to achieve the effect of driving the shock absorber to reciprocate and extend. Step 4: Push the pin 31 along the limiting groove 300 through the first hydraulic rod 36 to adjust the rotation radius of the pin 31, and then make the turntable 30 rotate to adjust the extension and retraction stroke of the shock absorber body 4.

[0047] In this embodiment, the shock absorber full-range testing device is used by first inserting the threaded tube 130 into the sleeve 12 and locking it with the nut 131. Then, the bushings at both ends of the shock absorber body 4 are placed on the outside of the threaded tube 130. Subsequently, the second hydraulic rod 134 drives the push block 135 to move, and pushes the protrusion 132 out with the help of the inclined surface to press against the inner wall of the bushing, so as to reliably fix the bushing. After the test, the push block 135 is reset, and the spring 133 rebounds and drives the protrusion 132 to retract, so that the workpiece can be quickly disassembled. The size matching between the threaded tube 130 and the bushing reduces the clamping difficulty. The first motor 24 is started, and through the transmission shaft 23, worm 22, worm wheel 21 and screw 20, it drives the two slide plates 11 to slide horizontally in opposite directions along the vertical plate 10. The sleeve 12 moves in an arc shape along the paired arc grooves 100 and strip grooves 110, causing the shock absorber body 4 to deflect and adjust its angle around its own center. The layout of the arc grooves 100 can ensure that the length of the shock absorber body 4 remains unchanged during the deflection process, avoiding interference with the test accuracy. Multiple sets of arc grooves 100 can also adapt to shock absorbers of different specifications and lengths, making it more versatile. After angle adjustment is completed, the second motor 35 is started. The turntable 30 and pin 31, in conjunction with the long slot 340, drive the missing gear 33 to reciprocate. Then, through the meshing of the rack 32 of the missing gear 33, the movable upright plate 10 slides up and down along the column 41. The fixed upright plate 10 remains stationary. Then, through the mounting shaft 13, the shock absorber body 4 performs telescopic movement. At the same time, when the upright plate 10 slides up and down, the limiting ring 14 drives the worm 22 to move vertically along the transmission shaft 23, so that the worm 22 and the worm wheel 21 always remain engaged, ensuring the normal operation of the angle deflection component 2. In addition, the first hydraulic rod 36 can be controlled to adjust the rotation radius of the pin 31, flexibly changing the telescopic stroke of the shock absorber body 4. This accurately simulates the multi-angle installation conditions and stroke of the shock absorber body 4 on a real vehicle, reproduces multi-dimensional dynamic loads, and effectively improves the comprehensiveness and accuracy of the test results.

[0048] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for the purpose of clearly describing the positional relationships and functions of the components.

Claims

1. A shock absorber full-range testing device, characterized in that, The device includes an end fixing assembly (1), an angle deflection assembly (2), and a test drive assembly (3). The end fixing assembly (1) includes a vertical plate (10), a sliding plate (11), a sleeve (12), and a mounting shaft (13). The sliding plate (11) is slidably connected to the vertical plate (10). A strip groove (110) is provided on one side of the sliding plate (11), and an arc groove (100) is provided on one side of the vertical plate (10). The sleeve (12) passes through the strip groove (110) and the arc groove (100) and is slidably connected to them. The mounting shaft (13) is detachably connected to the sleeve (12). The mounting shaft (13) is used to fix the end of the shock absorber body (4). The angle deflection assembly (2) is used to drive the sliding plate (11) to slide. The test drive assembly (3) is used to drive the vertical plate (10) to reciprocate up and down.

2. The shock absorber full-range testing device according to claim 1, characterized in that, The number of arc grooves (100) and the number of sleeves (12) are both multiple, and the arc centers of the multiple arc grooves (100) coincide and are distributed at equal intervals.

3. The shock absorber full-range testing device according to claim 1, characterized in that, It also includes a platform (40) and a column (41), the column (41) being fixedly connected to the inner wall of the platform (40), the number of the end fixing components (1) being a pair, the column (41) being slidably connected to one of the upright plates (10), the column (41) being fixedly connected to the other upright plate (10), and the arc grooves (100) on the two upright plates (10) having the same arc center and being arranged along the same circumferential trajectory.

4. The shock absorber full-range testing device according to claim 3, characterized in that, The angle deflection assembly (2) includes a pair of screws (20), a pair of worm gears (21), a pair of worms (22), a drive shaft (23), and a first motor (24). The screws (20) are rotatably connected to the upright plate (10) and threadedly connected to the slide plate (11). The threads on the two screws (20) are in opposite directions. The worm gears (21) are coaxially connected to the screws (20) and mesh with the worms (22). The drive shaft (23) is rotatably connected to the frame (40). The first motor (24) is fixedly connected to the frame (40). The output shaft of the first motor (24) is coaxially connected to the drive shaft (23), and the drive shaft (23) is coaxially connected to the worms (22).

5. The shock absorber full-range testing device according to claim 4, characterized in that, One of the upright plates (10) is fixedly connected to a pair of limiting rings (14) at one end. The limiting rings (14) are slidably connected to the transmission shaft (23). The limiting rings (14) abut against the worm (22). The inner wall of the worm (22) is fixedly connected to a protrusion (25). A groove (230) is opened on one side of the transmission shaft (23). The groove (230) is slidably connected to the protrusion (25).

6. The shock absorber full-range testing device according to claim 3, characterized in that, The test drive assembly (3) includes a turntable (30), a pin (31), a rack (32), a missing gear (33), and a limiting rod (34). The pin (31) is slidably mounted on the eccentric part of the turntable (30). The rack (32) is fixedly connected to one of the upright plates (10). The rack (32) is slidably connected to the platform (40). The rack (32) meshes with the missing gear (33). The missing gear (33) is rotatably connected to the platform (40). The limiting rod (34) is fixedly connected to the missing gear (33). A long groove (340) is provided on one side of the limiting rod (34). The long groove (340) is slidably connected to the pin (31).

7. The shock absorber full-range testing device according to claim 6, characterized in that, The test drive assembly (3) further includes a second motor (35) and a first hydraulic rod (36). The second motor (35) is fixedly connected to the stand (40). The output shaft of the second motor (35) is coaxially connected to the turntable (30). The first hydraulic rod (36) is fixedly connected to the turntable (30). The telescopic end of the first hydraulic rod (36) is fixedly connected to the pin (31). A limiting groove (300) is provided on one side of the turntable (30). The limiting groove (300) is slidably connected to the pin (31).

8. The shock absorber full-range testing device according to claim 1, characterized in that, The mounting shaft (13) includes a threaded tube (130), a nut (131), and a protrusion (132). One end of the threaded tube (130) is inserted into the sleeve (12). The nut (131) is threaded into the threaded tube (130). The nut (131) abuts against the sleeve (12). The other end of the threaded tube (130) is inserted into the bushing at the end of the shock absorber body (4). The protrusion (132) is slidably connected to the threaded tube (130). The protrusion (132) abuts against the bushing at the end of the shock absorber body (4).

9. A shock absorber full-range testing device according to claim 8, characterized in that, The mounting shaft (13) also includes a spring (133), a second hydraulic rod (134), and a push block (135). One end of the spring (133) is fixedly connected to the inner wall of the threaded tube (130), and the other end of the spring (133) is fixedly connected to the protrusion (132). The second hydraulic rod (134) is fixedly connected to the threaded tube (130), and the telescopic end of the second hydraulic rod (134) is fixedly connected to the push block (135). The push block (135) and the protrusion (132) abut against each other, and the side of the push block (135) near the protrusion (132) is a sloping structure.

10. A method for testing the entire range of a shock absorber as described in any one of claims 1 to 9, characterized in that, The process includes the following steps: Step 1: Based on the length of the shock absorber body (4) to be tested, insert the two threaded tubes (130) into the two sleeves (12) respectively and fix them. Then, put the bushings at both ends of the shock absorber body (4) onto the two mounting shafts (13) respectively, and fix them by the protrusions (132) on the mounting shafts (13) against the bushings. Step 2: By using the angle deflection component (2) set up, the two slide plates (11) are simultaneously driven to slide in opposite directions, so that the two ends of the shock absorber body (4) deflect in opposite directions respectively; Step 3: Make the test drive component (3) work, drive the rack (32) to slide up and down, drive one of the vertical plates (10) to slide back and forth, while the other vertical plate (10) remains stationary, so as to achieve the effect of driving the shock absorber to reciprocate and extend for testing; Step 4: Push the pin (31) along the limiting groove (300) by the second hydraulic rod (134) to adjust the rotation radius of the pin (31), and then make the turntable (30) rotate to achieve the effect of adjusting the extension and retraction stroke of the shock absorber body (4).

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