A test apparatus and test method for a vehicle variable damping shock absorber.

Abstract

The present invention relates to the field of damping shock absorbers, specifically to a testing device and a testing method for vehicle variable damping shock absorbers, comprising a detection mechanism, which is used for detecting and processing the tensile rebound performance of the damping shock absorber; a clamping mechanism, which is used for limiting and fixing multiple and different types of damping shock absorbers; a control panel is fixedly installed at the bottom of the clamping mechanism, the detection mechanism is arranged directly above the clamping mechanism, and the outer side of the detection mechanism is fixedly connected to the control panel; wherein the detection mechanism includes a rod support seat, and the testing device and the testing method for vehicle variable damping shock absorbers, through the continued contraction of the No. 1 hydraulic rod, the entire support panel will move downward together, and the above-mentioned not only plays the role of fastening the larger damping shock absorber, but also plays the role of connecting the moving platform and the support panel to each other, making preparations for the subsequent damping frequency response and linear displacement.

Description

Technical Field

[0001] This invention relates to the field of damping shock absorber technology, specifically to a testing device and testing method for a vehicle variable damping shock absorber. Background Technology

[0002] Shock absorbers are a crucial component in automobiles, and their performance directly impacts a vehicle's comfort, handling stability, and safety. Currently, most domestically produced cars, including those manufactured using imported technology or through Sino-foreign joint ventures, such as the Santana, Audi, Fukang, and Buick, primarily use traditional, non-variable damping shock absorbers, making them unsuitable for various road conditions and usage scenarios.

[0003] The existing testing devices for variable damping vibration dampers have the following problems: 1. The existing testing devices can only test and process damping vibration dampers of the same type. When testing damping vibration dampers with changes in size, it is necessary to change the device or the fixture, which reduces work efficiency; 2. In addition, friction is generated between the damping vibration damper and the clamping device during the clamping process. If the clamping is not done properly, the friction will increase, which will further reduce the measurement accuracy. Summary of the Invention

[0004] The present invention provides a testing device and testing method for a vehicle variable damping shock absorber to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a testing device for a vehicle variable damping shock absorber, comprising a testing mechanism for detecting and processing the tensile rebound performance of the damping shock absorber;

[0006] A clamping mechanism for limiting and fixing multiple and different types of damping shock absorbers;

[0007] A control panel is fixedly installed at the bottom of the clamping mechanism, and the detection mechanism is located directly above the clamping mechanism. The outer side of the detection mechanism is fixedly connected to the control panel.

[0008] The detection mechanism includes a rod support base, which is symmetrically connected to both ends of the control panel. A hydraulic rod is fixedly installed inside the rod support base. A connecting block is fixedly connected to the top of the hydraulic rod. A movable stage is fixedly connected to the inner end of the connecting block. The movable stage is positioned directly above the clamping mechanism. A light rod is sleeved inside the movable stage. The light rod is fixedly installed on the top of the control panel.

[0009] Preferably, the clamping mechanism includes a first limiting rod, which passes through the top of the control panel and extends into it. The bottom of the first limiting rod is fitted with a slanted insert rod, which passes laterally through the inside of the control panel. A top block is fixedly connected to the top of the slanted insert rod, and a manual push plate is fixedly connected to the top of the top block.

[0010] Preferably, the top of the first limiting rod is fitted with a snap-fit ​​sleeve, the top of the snap-fit ​​sleeve is fixedly connected to a placement panel, a rotator is fixedly installed at the center of the bottom of the placement panel, and the bottom of the rotator is fixedly connected to the top of the control panel.

[0011] Preferably, a central fixing seat is fixedly installed at the center of the top of the placement panel, and dampers are symmetrically arranged on both sides of the central fixing seat. The dampers are installed on the top of the placement panel by fasteners. A clamping component is arranged on the outside of the dampers, and an external block is fixedly connected to the outside of the clamping component. A curved insert is fixedly connected to the end of the external block away from the clamping component. A fixing sleeve is inserted into the bottom of the curved insert, and the fixing sleeve is fixedly connected to the top of the control panel.

[0012] Preferably, the outer side of the moving platform is provided with a slot, a second hydraulic rod is fixedly installed at the top of the inner cavity of the slot, a sliding plate is fixedly connected to the bottom end of the second hydraulic rod, the sliding plate is slidably adapted to the inside of the slot, a compensating folding plate is fixedly connected to the bottom of the sliding plate, and a double-headed rod is fixedly connected to the inner end of the compensating folding plate.

[0013] Preferably, the clamping mechanism includes a support panel, the outer side of which is fixedly connected to an outer block, a support and a limiting member are fixedly installed on the top of the support panel, a hollow sleeve is fixedly connected to the outer side of the support, and a first magnet is fixedly connected inside the hollow sleeve.

[0014] Preferably, an extension rod is fixedly connected to the bottom of the mobile platform, a first Z-plate is fixedly connected to the bottom of the extension rod, a second Z-plate is fixedly connected to the top of the inner cavity of the first Z-plate, threaded rods are threaded to both ends of the second Z-plate, insert rods are inserted to both ends of the first Z-plate, a return spring is fixedly connected to the outer side of the insert rod, the end of the return spring away from the insert rod is fixedly connected to the inner side of the first Z-plate, and a second magnet is fixedly connected to the end of the insert rod away from the return spring.

[0015] Preferably, the limiting component includes an internal threaded sleeve, which is fixedly connected to the top of the support panel. An external threaded sleeve is connected to the internal thread of the internal threaded sleeve. A nut is fixedly connected to the top of the external threaded sleeve. A plug rod is slidably adapted inside the external threaded sleeve. A leak-proof telescopic piece and an elastic ring are fixedly connected to the outside of the plug rod. The top of the leak-proof telescopic piece is fixedly connected to the bottom end of the external threaded sleeve.

[0016] Preferably, the support panel has an internal groove, and the end of the elastic ring away from the plug rod is fixedly connected to the top of the internal groove cavity. A pressure block is slidably adapted inside the internal groove. The inner side of the pressure block is adapted to damping compression. An outer patch block is fixedly connected to the side of the pressure block away from damping. A bottom inclined rod is compressively adapted to the top of the outer patch block. A disc is fixedly connected to the top of the bottom inclined rod. A push plate is compressively adapted to the top of the disc. A bearing is fixedly connected to the end of the push plate away from the disc. The bearing is compressively adapted to the outer side of the external threaded sleeve.

[0017] A test method for a vehicle variable damping shock absorber includes the following steps:

[0018] Step 1: Initial limiting. The first limiting rod is pressed by the inclined insert rod. The first limiting rod, which is pressed, will extend from the top of the control panel and insert into the snap-fit ​​sleeve. The snap-fit ​​sleeve is fixedly connected to the bottom of the placement panel to achieve limiting treatment of the placement panel and the damping circumferential direction.

[0019] Step 2: Preparatory work. As the first hydraulic rod continues to retract, the entire support panel will move downwards together. This achieves the fastening of the large-sized damping shock absorber and connects the moving platform to the support panel, preparing for the subsequent damping frequency response and linear displacement.

[0020] Step 3: Impact absorption. The hydraulic oil is squeezed and compressed by the plug rod. The compressed hydraulic oil then wraps around the pressure block, outer block, and bottom inclined rod to lubricate the three components, reduce friction and energy loss. At the same time, the damping absorbs the impact force between the three components during the test, reduces vibration transmission, and increases the damping detection accuracy.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. As the first hydraulic rod continues to retract, the entire support panel moves downwards along with it. This not only serves to secure the large damping shock absorber, but also connects the moving platform to the support panel, preparing for subsequent damping frequency response and linear displacement.

[0023] 2. The pressure block, which is being squeezed, passes through the built-in groove, thereby reinforcing the outer side of the damper. This reinforcement reduces frictional error between the two components, thus preventing any impact on measurement accuracy.

[0024] 3. The compressed hydraulic oil will wrap the pressure block, the outer block and the bottom inclined rod respectively, thereby lubricating the three of them, reducing friction and energy loss. At the same time, when the damping is tested, it will absorb the impact force between the three of them, reduce vibration transmission and increase the damping detection accuracy. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of a test device for a vehicle variable damping shock absorber according to the present invention.

[0026] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the detection mechanism of the present invention.

[0028] Figure 4 This is a front view schematic diagram of the clamping mechanism of the present invention.

[0029] Figure 5 This is a rear view schematic diagram of the clamping mechanism of the present invention.

[0030] Figure 6 For the present invention Figure 5 A magnified structural diagram of point A in the middle.

[0031] Figure 7 This is a schematic diagram of the clamping component of the present invention.

[0032] Figure 8 This is a schematic diagram of the full cross-sectional structure of the clamping component of the present invention.

[0033] Figure 9 For the present invention Figure 8 A magnified structural diagram at point B in the middle.

[0034] Figure 10 For the present invention Figure 8 A magnified structural diagram at point C.

[0035] Figure 11 This is a schematic diagram of the structure of the limiting component of the present invention.

[0036] Figure 12 This is a longitudinal full-section structural diagram of the limiting member of the present invention.

[0037] Figure 13 For the present invention Figure 12A magnified structural diagram at point D.

[0038] Figure 14 This is a schematic diagram of the transverse full-section structure of the limiting member of the present invention.

[0039] In the diagram: 1. Control panel; 2. Detection mechanism; 3. Clamping mechanism; 21. Rod support; 22. Hydraulic rod No. 1; 23. Connecting block; 24. Moving table; 25. Smooth rod; 31. Limit rod No. 1; 32. Inclined insert rod; 33. Top block; 34. Manual push plate; 35. Snap-fit ​​sleeve; 36. Placement panel; 37. Rotator; 38. Center fixed seat; 39. Damping; 30. Clamping assembly; 301. External block; 302. Bending insert rod; 303. Fixed sleeve; 304. Hole and slot; 305. Hydraulic rod No. 2; 306. Slide plate; 307. Compensating folding plate; 308. Double-headed rod; 1 1. Support panel; 12. Support; 13. Limiting component; 14. Hollow sleeve; 15. Magnet No. 1; 16. Extension rod; 17. Z-plate No. 1; 18. Z-plate No. 2; 19. Threaded rod; 10. Inserting rod; 101. Return spring; 102. Magnet No. 2; 131. Internal threaded sleeve; 132. External threaded sleeve; 133. Nut; 134. Bearing; 135. Push plate; 136. Plug rod; 137. Leak-proof telescopic plate; 138. Elastic ring; 139. Internal groove; 130. Pressure block; 1301. External patch block; 1302. Bottom inclined rod; 1303. Disc. Detailed Implementation

[0040] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1 to 14 The present invention provides a technical solution: such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes a testing mechanism 2, which is used to test the tensile rebound performance of the damping shock absorber.

[0042] Clamping mechanism 3, which is used for limiting and fixing multiple and different types of damping shock absorbers;

[0043] The bottom of the clamping mechanism 3 is fixedly mounted with a control panel 1, and the detection mechanism 2 is located directly above the clamping mechanism 3. The outer side of the detection mechanism 2 is fixedly connected to the control panel 1.

[0044] The detection mechanism 2 includes a rod support 21, which is symmetrically connected to both ends of the control panel 1. A first hydraulic rod 22 is fixedly installed inside the rod support 21. A connecting block 23 is fixedly connected to the top of the first hydraulic rod 22. A moving platform 24 is fixedly connected to the inner end of the connecting block 23. The moving platform 24 is located directly above the clamping mechanism 3. A light rod 25 is sleeved inside the moving platform 24. The light rod 25 is fixedly installed on the top of the control panel 1.

[0045] The clamping mechanism 3 includes a first limiting rod 31, which is inserted through the top of the control panel 1 and extends into it. The bottom of the first limiting rod 31 is fitted with a slanted insert rod 32, which is inserted laterally into the control panel 1. The top of the slanted insert rod 32 is fixedly connected to a top block 33, and the top of the top block 33 is fixedly connected to a manual push plate 34. The top of the first limiting rod 31 is fitted with a snap-fit ​​sleeve 35, and the top of the snap-fit ​​sleeve 35 is fixedly connected to a placement panel 36. A rotator 37 is fixedly installed at the center of the bottom of the placement panel 36, and the bottom of the rotator 37 is fixedly connected to the top of the control panel 1. A center fixing seat 38 is fixedly installed at the center of the top of the placement panel 36, and dampers 39 are symmetrically arranged on both sides of the center fixing seat 38. The dampers 39 are installed on the top of the placement panel 36 by fasteners. By activating the rotator 37, the placement panel 36 connected to its top will rotate 90 degrees, causing the semi-circular surface of the placement panel 36 to face outwards and directly towards the operator. Then, the damper 39 is installed on the placement panel 36 using fasteners. After that, the rotator 37 is activated again, causing the placement panel 36 to rotate to its initial position. Then, the operator manually pushes the manual push plate 34 inwards, causing the top block 33 connected to its bottom end to insert the inclined insert rod 32 into the interior of the control panel 1 and press against the first limit rod 31. The pressed first limit rod 31 will extend from the top of the control panel 1 and insert into the snap-fit ​​sleeve 35, which is fixedly connected to the bottom of the placement panel 36, thereby limiting the circumferential movement of the placement panel 36 and the damper 39. The damper 39 is a small damping shock absorber.

[0046] A clamping assembly 30 is provided on the outer side of the damper 39. An external block 301 is fixedly connected to the outer side of the clamping assembly 30. A curved insert rod 302 is fixedly connected to the end of the external block 301 away from the clamping assembly 30. A fixing sleeve 303 is inserted into the bottom of the curved insert rod 302. The fixing sleeve 303 is fixedly connected to the top of the control panel 1. A slot 304 is opened on the outer side of the moving platform 24. A second hydraulic rod 305 is fixedly installed at the top of the cavity of the slot 304. A slide plate 306 is fixedly connected to the bottom end of the second hydraulic rod 305. The slide plate 306 slides and adapts to the inside of the slot 304. A compensating folding plate 307 is fixedly connected to the bottom of the slide plate 306. A double-headed rod 308 is fixedly connected to the inner end of the compensating folding plate 307.

[0047] like Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the clamping mechanism 3 includes a support panel 11. The outer side of the support panel 11 is fixedly connected to the outer block 301. A support 12 and a limiting member 13 are fixedly installed on the top of the support panel 11. A hollow sleeve 14 is fixedly connected to the outer side of the support 12. A first magnet 15 is fixedly connected inside the hollow sleeve 14. An extension rod 16 is fixedly connected to the bottom of the moving platform 24. A first Z-plate 17 is fixedly connected to the bottom of the extension rod 16. A second Z-plate 18 is fixedly connected to the top of the inner cavity of the first Z-plate 17. Threaded rods 19 are threaded to both ends of the second Z-plate 18. Threaded rods 19 are threaded to both ends of the first Z-plate 17. Each component is fitted with a through rod 10. A return spring 101 is fixedly connected to the outer side of the through rod 10. The end of the return spring 101 away from the through rod 10 is fixedly connected to the inner side of the first Z-plate 17. A second magnet 102 is fixedly connected to the end of the through rod 10 away from the return spring 101. Alternatively, a larger damping shock absorber can be placed inside the central fixed seat 38. Then, the support panel 11 is passed through the top of the damper 39 and the damping shock absorber, respectively. The height of the support panel 11 can be adjusted using the bending insert 302 and the fixing sleeve 303. The bending insert 302 has a friction locking mechanism. Then, the... The movement of hydraulic rod 22 causes the connecting block 23, connected to its top, to move the moving platform 24 downwards. The extension rod 16, fixed to the bottom of the moving platform 24, then moves the Z-plate 17 downwards. The interior of the Z-plate 17 is connected to the Z-plate 18. Therefore, when the insert rods 10, inserted at both ends of the Z-plate 17, move to a position level with the center of the hollow sleeve 14, the threaded rod 19 rotates forward. This causes the Z-plate 18 and the larger damping shock absorber to be connected via the threaded rod 19. Simultaneously, as the insert rods 10 move... When the position is level with the center of the hollow sleeve 14, the second magnet 102, which is fixedly connected to the outer end of the insertion rod 10, will attract the first magnet 15 inside the hollow sleeve 14. Then the insertion rod 10 will compress the return spring 101 and insert into the interior of the hollow sleeve 14. As the first hydraulic rod 22 continues to contract, the entire support panel 11 will move downwards. This not only serves to secure the large damping shock absorber, but also connects the moving platform 24 to the support panel 11, preparing for the subsequent damping frequency response and linear displacement.

[0048] like Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, the limiting member 13 includes an internal threaded sleeve 131, which is fixedly connected to the top of the support panel 11. An external threaded sleeve 132 is threadedly connected to the inside of the internal threaded sleeve 131. A nut 133 is fixedly connected to the top of the external threaded sleeve 132. A plug rod 136 is slidably fitted inside the external threaded sleeve 132. A leak-proof telescopic piece 137 and an elastic ring 138 are fixedly connected to the outside of the plug rod 136. The top of the leak-proof telescopic piece 137 is fixedly connected to the bottom end of the external threaded sleeve 132. An internal groove 139 is provided inside the support panel 11. One end of the elastic ring 138 away from the plug rod 136 is fixedly connected to the top of the inner cavity of the internal groove 139. The elastic ring 138 fixedly connected to the outside of the plug rod 136... 8 is elastic, which prevents the hydraulic oil from being squeezed and converging. Simultaneously, the leak-proof telescopic piece 137, fixedly connected to the outside of the plug rod 136, compensates for the distance the plug rod 136 extends into the inner groove 139. A pressure block 130 is slidably fitted inside the inner groove 139. The inner side of the pressure block 130 is pressed against the damper 39. An outer patch block 1301 is fixedly connected to the side of the pressure block 130 away from the damper 39. Before activating the first hydraulic rod 22, the nut 133 needs to be rotated forward, causing the external threaded sleeve 132 connected to its bottom to move spirally downward along the internal threaded sleeve 131. The outer side of the external threaded sleeve 132 is connected to the push plate 13 by a bearing 134. Since the five components are connected, the other end of the pressing plate 135 will press the disc 1303 downwards. The pressed disc 1303, along with the bottom inclined rod 1302, will insert downwards into the inner groove 139 and press the outer patch 1301. The other side of the outer patch 1301 is fixedly connected to the pressure block 130. Therefore, the pressure block 130 will pass through the inner groove 139, thereby performing a pressing and reinforcing treatment on the outside of the damping 39. The reinforcement treatment reduces the frictional error between the two, thereby avoiding affecting the measurement accuracy. The top of the outer patch 1301 is fitted with the bottom inclined rod 1302, and the top of the bottom inclined rod 1302 is fixedly connected to the disc 1303. The top of the disc 1303... The extrusion adapter is equipped with a pressing plate 135. A bearing 134 is fixedly connected to the end of the pressing plate 135 away from the disc 1303. The bearing 134 is extruded onto the outside of the external threaded sleeve 132. Furthermore, before rotating the nut 133 in the forward direction, the second hydraulic rod 305 can be activated, causing the slide plate 306 connected to its bottom end to move downwards along the slot 304. The bottom of the slide plate 306 is connected to a compensating baffle 307, so the compensating baffle 307 moves downwards and compresses the plug rod 136. The compressed plug rod 136 then penetrates into the inner groove 139, which is filled with hydraulic oil. Therefore, the hydraulic oil is compressed and squeezed by the plug rod 136.The compressed hydraulic oil then wraps around the pressure block 130, the outer padding block 1301, and the bottom inclined rod 1302, thereby lubricating them, reducing friction and energy loss. Simultaneously, during testing, the damper 39 absorbs the impact force between the three components, reducing vibration transmission and increasing the accuracy of damping detection.

[0049] In use, the present invention is as follows: First, the rotator 37 is activated, causing the placement panel 36 connected to its top to rotate 90 degrees, so that the semi-circular surface of the placement panel 36 faces outward and directly towards the operator. Then, the damper 39 is installed on the placement panel 36 using fasteners. Next, the rotator 37 is activated again, causing the placement panel 36 to rotate to its initial position. Then, the operator manually pushes the manual push plate 34 inward, so that the top block 33 connected to its bottom end will insert the inclined insert rod 32 into the interior of the control panel 1 and press the first limit rod 31. The first limit rod 31, which is pressed, will extend from the top of the control panel 1 and insert into the snap-fit ​​sleeve 35, which is fixedly connected to the bottom of the placement panel 36. Thus, the placement panel 36 and the damper 39 are limited in the circumferential direction.

[0050] Alternatively, a larger damping shock absorber can be placed inside the central fixed seat 38, and then the support panel 11 can be passed through the top of the damper 39 and the damping shock absorber respectively. Then, the first hydraulic rod 22 is activated, so that the connecting block 23 connected to its top will move downward along with the moving platform 24. The extension rod 16 fixedly connected to the bottom of the moving platform 24 will move downward along with the first Z-plate 17. The interior of the first Z-plate 17 is connected to the second Z-plate 18. Therefore, when the inserting rods 10 inserted at both ends of the first Z-plate 17 move to the center of the hollow sleeve 14... When the two sides are in the same position, the threaded rod 19 is rotated in the forward direction, so that the second Z-plate 18 and the larger damping shock absorber are connected through the threaded rod 19. At the same time, when the insertion rod 10 moves to the position where it is level with the center of the hollow sleeve 14, the second magnet 102 fixedly connected to the outer end of the insertion rod 10 will attract the first magnet 15 inside the hollow sleeve 14. Then the insertion rod 10 will compress the return spring 101 and insert into the interior of the hollow sleeve 14. Therefore, as the first hydraulic rod 22 continues to contract, the entire support panel 11 will move downward together.

[0051] Before activating the first hydraulic rod 22, the nut 133 needs to be rotated forward, causing the external threaded sleeve 132 connected to its bottom to move spirally downward along the internal threaded sleeve 131. The outer side of the external threaded sleeve 132 is connected to the push plate 135 through the bearing 134. Therefore, the other end of the push plate 135 will press the disc 1303 downward. The pressed disc 1303 will then insert the bottom inclined rod 1302 downward into the inner groove 139 and press the outer patch 1301. The other side of the outer patch 1301 is fixedly connected to the pressure block 130. Therefore, the pressure block 130 will pass through the inner groove 139 and perform compression reinforcement on the outer side of the damper 39. Additionally, the second hydraulic rod 305 can be activated, causing the slide plate 306 connected to its bottom end to move downwards along the slot 304 for a certain distance. The bottom of the slide plate 306 is connected to the compensation baffle 307, so the compensation baffle 307 will move downwards and squeeze the plug rod 136. The compressed plug rod 136 will then penetrate into the interior groove 139, which is filled with hydraulic oil. Therefore, the hydraulic oil will be squeezed and compressed by the plug rod 136. Subsequently, the compressed hydraulic oil will wrap around the pressure block 130, the outer patch block 1301, and the bottom inclined rod 1302 respectively.

[0052] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made by those skilled in the art based on the above concepts without creative effort shall fall within the scope of protection of the present invention.

Claims

1. A testing device for a vehicle variable damping shock absorber, characterized in that, include: Testing agency (2), which is used to test the tensile rebound performance of damping shock absorbers; Clamping mechanism (3) is used for limiting and fixing multiple and different types of damping shock absorbers; The bottom of the clamping mechanism (3) is fixedly installed with a control panel (1), and the detection mechanism (2) is located directly above the clamping mechanism (3). The outer side of the detection mechanism (2) is fixedly connected to the control panel (1). The detection mechanism (2) includes a rod support (21), which is symmetrically connected to both ends of the control panel (1). A hydraulic rod (22) is fixedly installed inside the rod support (21). A connecting block (23) is fixedly connected to the top of the hydraulic rod (22). A moving platform (24) is fixedly connected to the inner end of the connecting block (23). The moving platform (24) is located directly above the clamping mechanism (3). A light rod (25) is sleeved inside the moving platform (24). The light rod (25) is fixedly installed on the top of the control panel (1). The movable platform (24) has a slot (304) on its outer side. A second hydraulic rod (305) is fixedly installed at the top of the cavity of the slot (304). A sliding plate (306) is fixedly connected to the bottom end of the second hydraulic rod (305). The sliding plate (306) is slidably adapted to the inside of the slot (304). A compensating folding plate (307) is fixedly connected to the bottom of the sliding plate (306). A double-headed rod (308) is fixedly connected to the inner end of the compensating folding plate (307). The clamping mechanism (3) includes a support panel (11), the outer side of the support panel (11) is fixedly connected to the outer block (301), and the top of the support panel (11) is fixedly installed with a support (12) and a limiting member (13). The limiting member (13) includes an internal threaded sleeve (131), which is fixedly connected to the top of the support panel (11). An external threaded sleeve (132) is threadedly connected to the inside of the internal threaded sleeve (131). A nut (133) is fixedly connected to the top of the external threaded sleeve (132). A plug rod (136) is slidably fitted inside the external threaded sleeve (132). A leak-proof telescopic piece (137) and an elastic ring piece (138) are fixedly connected to the outside of the plug rod (136). The top of the leak-proof telescopic piece (137) is fixedly connected to the bottom of the external threaded sleeve (132). The support panel (11) has an internal groove (139). The end of the elastic ring (138) away from the plug rod (136) is fixedly connected to the top of the internal cavity of the internal groove (139). A pressure block (130) is slidably fitted inside the internal groove (139). The inner side of the pressure block (130) is pressed and fitted with the damper (39). An external patch block (13) is fixedly connected to the side of the pressure block (130) away from the damper (39). 01), the top of the outer patch block (1301) is fitted with a bottom inclined rod (1302), the top of the bottom inclined rod (1302) is fixedly connected to a disc (1303), the top of the disc (1303) is fitted with a push plate (135), the end of the push plate (135) away from the disc (1303) is fixedly connected to a bearing (134), and the bearing (134) is fitted to the outside of the external threaded sleeve (132).

2. The testing device for a vehicle variable damping shock absorber according to claim 1, characterized in that: The clamping mechanism (3) includes a first limiting rod (31), which is inserted through the top of the control panel (1) and extends into its interior. The bottom of the first limiting rod (31) is fitted with a sloping insert rod (32), which is inserted laterally into the interior of the control panel (1). The top of the sloping insert rod (32) is fixedly connected to a top block (33), and the top of the top block (33) is fixedly connected to a manual push plate (34).

3. The testing device for a vehicle variable damping shock absorber according to claim 2, characterized in that: The top of the first limiting rod (31) is fitted with a snap-fit ​​sleeve (35), the top of the snap-fit ​​sleeve (35) is fixedly connected to a placement panel (36), the center of the bottom of the placement panel (36) is fixedly installed with a rotator (37), and the bottom of the rotator (37) is fixedly connected to the top of the control panel (1).

4. The testing device for a vehicle variable damping shock absorber according to claim 3, characterized in that: A central fixing seat (38) is fixedly installed at the center of the top of the placement panel (36). Dampers (39) are symmetrically arranged on both sides of the central fixing seat (38). The dampers (39) are installed on the top of the placement panel (36) by fasteners. A clamping assembly (30) is arranged on the outside of the damper (39). An external block (301) is fixedly connected to the outside of the clamping assembly (30). A curved insert (302) is fixedly connected to the end of the external block (301) away from the clamping assembly (30). A fixing sleeve (303) is inserted into the bottom of the curved insert (302). The fixing sleeve (303) is fixedly connected to the top of the control panel (1).

5. The testing device for a vehicle variable damping shock absorber according to claim 1, characterized in that: The bottom of the moving platform (24) is fixedly connected to an extension rod (16), the bottom of the extension rod (16) is fixedly connected to a first Z-plate (17), the top of the inner cavity of the first Z-plate (17) is fixedly connected to a second Z-plate (18), both ends of the second Z-plate (18) are threadedly connected to threaded rods (19), both ends of the first Z-plate (17) are inserted with insertion rods (10), the outside of the insertion rods (10) is fixedly connected to a reset spring (101), the end of the reset spring (101) away from the insertion rod (10) is fixedly connected to the inside of the first Z-plate (17), and the end of the insertion rod (10) away from the reset spring (101) is fixedly connected to a second magnet (102). A hollow sleeve (14) is fixedly connected to the outside of the support (12), and a magnet (15) is fixedly connected inside the hollow sleeve (14).

6. A test method for a vehicle variable damping shock absorber, used in the test apparatus for the vehicle variable damping shock absorber according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Initial limiting. The first limiting rod (31) is squeezed by the inclined insert rod (32). The first limiting rod (31) under pressure will extend from the top of the control panel (1) and insert into the snap sleeve (35). The snap sleeve (35) is fixedly connected to the bottom of the placement panel (36) to achieve circumferential limiting of the placement panel (36) and the damper (39). Step 2: Laying out the foundation. As the first hydraulic rod (22) continues to contract, the entire support panel (11) will move downwards together. The above achieves the fastening of the large-sized damping shock absorber, and also connects the moving platform (24) and the support panel (11) to each other, preparing for the subsequent damping frequency response and linear displacement. Step 3: Impact absorption. The hydraulic oil is squeezed and compressed by the plug rod (136). The compressed hydraulic oil then wraps around the pressure block (130), the outer block (1301), and the bottom inclined rod (1302) to achieve lubrication between the three, reduce friction and energy loss. At the same time, the damping (39) absorbs the impact force between the three during the test, reduces vibration transmission, and increases the damping detection accuracy.

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