Performance test board for shock absorber

Abstract

The invention discloses a shock absorber performance test bench, which comprises a test bench main body, a limiting table is movably arranged at the upper end of the test bench main body, a clamping mechanism is arranged on the test bench main body, a conduction mechanism corresponding to the clamping mechanism is arranged at the bottom of the limiting table, and the clamping mechanism comprises a lifting plate, a clamping seat and a lifting frame. A pushing shaft is arranged between the lifting plate and the test board body, a pair of limiting clamping plates is arranged at the top of the clamping base, a transmission ring is arranged at the top of the lifting frame, the conduction mechanism comprises a rotating table and a guide rail frame, a transmission balance shaft is movably clamped in the guide rail frame, and a connecting plate with fixing frames at the two ends is installed at the bottom of the transmission balance shaft. A dynamic simulation tube is movably arranged at the bottom of the fixing frame; compared with the prior art, through cooperative operation of the conduction mechanism and the clamping mechanism, adjustable compression testing of the shock absorber in multiple directions is achieved, the transmission ring arranged in the dynamic simulation pipe is matched with the conical pipe structure, the impact angle and flow speed of gravel and metal particles can be controlled, and the real working condition can be effectively simulated.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorber detection equipment, and specifically relates to a performance test bench for shock absorbers. Background Art

[0002] The shock absorber test bench is a test equipment for detecting the buffering and damping performance of vehicle shock absorbers during operation. The test results can directly check the quality of the shock absorber performance, and it is an indispensable test and detection equipment to ensure the safety and reliability of vehicles.

[0003] The existing shock absorber test benches mainly conduct telescopic tests on the vertical direction of shock absorbers, that is, their tests are mainly for single-direction force. However, in actual use, shock absorbers will be subjected to forces in multiple directions. Therefore, the service life obtained by the existing shock absorber test benches is generally longer than the actual service life. Moreover, in the performance test of motorcycle shock absorbers, especially for off-road motorcycles or models that often drive on harsh road conditions such as sand and gravel, there is no test for piston rod wear caused by environmental factors such as sand particles to ensure the reliability and durability of shock absorbers in complex environments. For this reason, we propose a performance test bench for shock absorbers to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a performance test bench for shock absorbers to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A performance test bench for shock absorbers, including,

[0006] A test bench main body, on the upper end of which a limit table is movably arranged. A clamping mechanism is arranged on the test bench main body, and a conduction mechanism corresponding to the clamping mechanism is arranged at the bottom of the limit table;

[0007] The clamping mechanism includes a lifting plate, a clamping seat and a lifting frame. A pushing shaft is arranged between the lifting plate and the test bench main body. A pair of limit clamping plates are arranged at the top of the clamping seat. A transmission ring is arranged at the top of the lifting frame, and a diversion ring for waste recycling is clamped inside the transmission ring;

[0008] The conduction mechanism includes a rotating table and a guide rail frame with a transmission balance shaft movably clamped inside. A connecting plate with fixed frames at both ends is installed at the bottom of the transmission balance shaft, and a dynamic simulation tube is movably arranged at the bottom of the fixed frame;

[0009] Among them, a transmission ring for simulating material spraying is installed inside the dynamic simulation tube, and the material is composed of irregular metal particles and gravel. When it is necessary to test the shock absorber, it can be clamped between the clamping mechanism and the conduction mechanism, enabling quick positioning of the shock absorber. As the conduction mechanism and the lifting plate start to operate, the shock absorber can be compressed and tested from multiple angles, making it more in line with the actual usage environment, and a relatively accurate service life can be obtained. When the shock absorber is operating and being detected from multiple angles, the dynamic simulation tube can be sleeved outside it, and the gravel and irregular metal particles are randomly transported to the outside of the shock absorber, which can cause bumps and abrasions to its spring and piston connecting rod, simulating the usage environment of off-road models, and thus obtaining multiple sets of data of the shock absorber.

[0010] Preferably, fixing grooves are provided on the guide rail frame, the dynamic simulation tube is movably arranged at the bottom, a limiting top block is arranged between the fixing frames, the limiting top block is connected to the bottom of the transmission balance shaft, and a clamping groove is arranged inside the limiting top block for clamping and positioning one end of the shock absorber, and it can cooperate with the clamping mechanism to clamp and position the shock absorber.

[0011] Preferably, an annular conveying groove is provided inside the transmission ring, a plurality of circular protrusions communicating with the annular transmission groove are uniformly arranged on the inner wall of the transmission ring, and a conical tube made of an elastic material is arranged on the circular protrusion;

[0012] A plurality of swing shafts are installed at the top of the transmission ring, a counterweight ring corresponding to the conical tube is installed at one end of the swing shaft, and the counterweight ring abuts against the circular protrusion to compress the conical tube, reducing the situation of material leakage.

[0013] Preferably, a storage box communicating with the transmission ring is installed on the outer wall of the dynamic simulation tube, a pair of transmission insertion rods are movably clamped on the side wall of the dynamic simulation tube, and a corrugated compression tube is installed between the bottom of the inner wall of the transmission insertion rod and the bottom of the dynamic simulation tube, which plays a role of blocking and guiding during the environmental simulation process, can recycle the materials during the test process. Compared with the traditional open test bench, it can not only shorten the maintenance and cleaning time, but also reduce the material loss.

[0014] Preferably, a hinge shaft is movably arranged at the top of the clamping seat, telescopic rods are installed at both ends of the top of the hinge shaft, a transmission frame is movably arranged on the telescopic rods, a limiting clamping plate is installed at the top of the transmission frame, and a frustum provided with multiple groups of rubber shafts is clamped inside the limiting clamping plate for clamping and positioning the bottom of the shock absorber, effectively avoiding surface scratches caused by traditional rigid clamps.

[0015] Preferably, a telescopic frame installed on the lifting plate is provided at the bottom of the lifting frame, a plurality of compression shafts are installed on the side wall of the lifting frame, and the movable distance of the compression shafts can be adjusted, and the transmission ring is installed at the top of the compression shaft;

[0016] The diversion ring is conical and internally provided with multiple groups of concentric magnetic rings. A fixing ring is installed inside the diversion ring, and a plurality of reset shafts with magnetic blocks clamped thereon are installed on the fixing ring. A blocking ring is connected to the diversion ring. One end of the blocking ring is clamped on the reset shaft and moves with the reset shaft. An annular storage cavity is formed between the blocking ring and the diversion ring, which can recycle materials. Compared with traditional sandblasting treatment, it can save costs.

[0017] Preferably, a sealing clamping ring is provided inside the diversion ring. The sealing clamping ring is elastic and clamped inside the lifting frame. A plurality of swing rods are provided at the top of the sealing clamping ring, and a docking ring is installed at the top of the swing rod. A clamping ring is installed at the top of the docking ring, and the clamping ring is sleeved at the bottom of the shock absorber. The clamping ring can play the role of a lubricant holder.

[0018] Preferably, a plurality of metal rings are provided on the sealing clamping ring, and the metal rings are sleeved on the swing rods and correspond to the positions of the magnetic blocks. By the cooperation of the reset shaft embedded in the diversion ring and the swing rods to generate a magnetic attraction effect to adjust the position of the blocking ring, the collected materials can be tamped.

[0019] Preferably, an annular groove is formed at the top of the clamping ring, and an adsorption ring is clamped inside the annular groove. The cross section of the adsorption ring is "U"-shaped and made of sponge material, which can absorb the excess lubricant in case of leakage of the shock absorber.

[0020] Preferably, a rubber cushion plate is installed on the top of the test bench main body, and the position of the rubber cushion plate corresponds to the lifting plate, which is used to reduce the vibration generated during the test.

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

[0022] 1. Through the coordinated operation of the conduction mechanism and the clamping mechanism, the present invention realizes the adjustable compression test of the shock absorber in the X / Y / Z three-axis directions. The dynamic simulation of the transmission ring inside the tube and the conical tube structure can control the impact angle and flow rate of the gravel and metal particles. Compared with the traditional single-axis test bench, the data acquisition dimension effect is improved, effectively simulating the real working conditions of off-road motorcycles on complex road conditions such as gravel and muddy roads, and the test results have a higher degree of coincidence with the actual vehicle working conditions;

[0023] 2. Through the closed design of the diversion ring and the corrugated compression tube, the present invention can recycle the materials during the test process. Compared with the traditional open test bench, it can not only shorten the maintenance and cleaning time, but also reduce the material loss;

[0024] 3. The present invention adjusts the position of the blocking ring by the magnetic attraction generated by the cooperation of the reset shaft embedded in the diversion ring and the swing rod, which can compact the collected materials. A magnetic ring is provided inside the diversion ring to quickly limit the irregular metal particles, reduce their splashing, and increase the wear of the detection equipment.

[0025] 4. The present invention compresses the conical tube through the weight ring equipped on the transmission ring to reduce leakage. Subsequently, the conical tube can be replaced with different sandblasting tubes according to the actual situation to simulate the wear during high-speed riding, so as to obtain experimental data.

[0026] 5. The present invention can absorb the excess lubricant when the shock absorber leaks through the cooperation of the attachment ring using super-hydrophobic sponge and the diversion ring, reduce its seepage into the clamping mechanism at the bottom, and extend the cleaning and maintenance cycle of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic diagram of the main structure of the test bench of the present invention;

[0029] Figure 3 is a schematic diagram of the clamping mechanism structure of the present invention;

[0030] Figure 4 is a schematic diagram of the lifting frame structure of the present invention;

[0031] Figure 5 is an exploded schematic diagram of the clamping mechanism structure of the present invention;

[0032] Figure 6 is an exploded schematic diagram of the dynamic simulation tube structure of the present invention;

[0033] Figure 7 is of the present invention Figure 6 partial enlarged schematic diagram at position A;

[0034] Figure 8 is a partial sectional view schematic diagram of the transmission ring of the present invention;

[0035] In the figure: 1. Test bench main body; 2. Clamping mechanism; 3. Conduction mechanism; 4. Lifting frame; 5. Clamping ring; 6. Dynamic simulation tube; 11. Limit platform; 21. Lifting plate; 22. Clamping seat; 23. Hinge shaft; 24. Limit clamping plate; 31. Rotary table; 32. Guide rail frame; 33. Transmission balance shaft; 34. Limit top block; 35. Fixed frame; 41. Sealing clamping ring; 42. Transmission ring; 421. Flow guiding ring; 43. Blocking ring; 431. Reset shaft; 44. Docking ring; 51. Adsorption ring; 61. Corrugated compression tube; 62. Storage box; 63. Transmission ring; 64. Swing shaft; 641. Counterweight ring; 65. Conical tube. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a performance test bench for a shock absorber, including

[0038] The test bench main body 1 is movably provided with a limit platform 11 at its upper end, a clamping mechanism 2 is provided on the main body of the test bench main body 1, and a conduction mechanism 3 corresponding to the clamping mechanism 2 is provided at the bottom of the limit platform 11;

[0039] The clamping mechanism 2 includes a lifting plate 21, a clamping seat 22 and a lifting frame 4. A push shaft is provided between the lifting plate 21 and the test bench main body 1. A pair of limit clamping plates 24 are provided at the top of the clamping seat 22. A transmission ring 42 is provided at the top of the lifting frame 4, and a flow guiding ring 421 for waste recycling is clamped inside the transmission ring 42;

[0040] The conduction mechanism 3 includes a rotary table 31 and a guide rail frame 32 with a transmission balance shaft 33 movably clamped inside. A connecting plate with fixed frames 35 provided at both ends is installed at the bottom of the transmission balance shaft 33, and a dynamic simulation tube 6 is movably provided at the bottom of the fixed frame 35;

[0041] Among them, a transmission ring 63 for simulating material spraying is installed inside the dynamic simulation tube 6, and the material is composed of irregular metal particles and gravel. When it is necessary to test the shock absorber, it can be clamped between the clamping mechanism 2 and the conduction mechanism 3, which can quickly limit the position of the shock absorber. As the conduction mechanism 3 and the lifting plate 21 start to operate, the shock absorber can be compressed and tested from multiple angles, making it more in line with the actual usage environment, and a relatively accurate service life can be obtained. When the shock absorber is operating and being detected from multiple angles, the dynamic simulation tube 6 can be sleeved outside it, and the gravel and irregular metal particles are randomly conveyed to the outside of the shock absorber, which can cause knocking and wear on its spring and piston connecting rod, and can simulate the usage environment of off-road models, thereby obtaining multiple sets of data of the shock absorber.

[0042] As Figure 6 shown, in order to limit and clamp the shock absorber, fixing grooves are provided on the guide rail frame 32, the dynamic simulation tube 6 is movably arranged at the bottom, a limiting top block 34 is arranged between the fixing frames 35, the limiting top block 34 is connected to the bottom of the transmission balance shaft 33, and a clamping groove is arranged inside the limiting top block 34 for clamping and limiting one end of the shock absorber, which can cooperate with the clamping mechanism 2 to limit and clamp the shock absorber, facilitating subsequent compression detection. By means of the fixing grooves on the guide rail frame 32, the movement range of the bottom limiting top block 34 can be restricted. During the cooperation and clamping process, after the limiting top block 34 completes the limiting, the limiting top block 34 can move inside the fixing groove following the transmission balance shaft 33, which is also convenient for subsequent detection.

[0043] As Figure 7 and Figure 8 shown, in order to simulate the outdoor environment, an annular conveying groove is provided inside the transmission ring 63, and a plurality of circular ring protrusions communicating with the annular transmission groove are uniformly arranged on the inner wall of the transmission ring 63, and a conical tube 65 made of elastic material is arranged on the circular ring protrusion. The gravel and irregular metal blocks can move inside the annular conveying groove, and as the conduction mechanism 3 operates, they can be evenly mixed together, and the situation of blockage during subsequent discharging can also be reduced;

[0044] A plurality of swing shafts 64 are installed on the top of the transmission ring 63, and a counterweight ring 641 corresponding to the conical tube 65 is installed at one end of the swing shaft 64. The counterweight ring 641 abuts against the circular ring protrusion to compress the conical tube 65, reducing the situation of material leakage. By means of the counterweight ring 641 squeezing the conical tube 65, its opening contracts inward to play a blocking role. During the subsequent operation of the conduction mechanism 3, under the action of inertia, the counterweight ring 641 can shift, enabling the material to enter the gap of the shock absorber during this process. Compared with direct spraying treatment, it is closer to the actual riding environment, and the conical tube 65 can also be replaced with a high-speed nozzle to simulate the impact wear under high-speed driving conditions.

[0045] As Figure 6 shown, in order to reduce the impact of the simulation environment on the external environment, a storage box 62 communicating with the transmission ring 63 is installed on the outer wall of the dynamic simulation tube 6. A pair of transmission insertion rods are movably clamped on the side wall of the dynamic simulation tube 6, and a corrugated compression tube 61 is installed between the bottom of the inner wall of the transmission insertion rod and the bottom of the dynamic simulation tube 6, which is used to play a role of blocking and guiding during the environmental simulation process. By means of the corrugated compression tube 61, it can be sleeved outside the shock absorber, which can play a blocking role, reduce the situation of flying sand and metal particles, and can also divert the debris after impact and collision to the diversion ring 421 for subsequent collection and processing.

[0046] As Figure 5 shown, in order to ensure the stability of clamping, a hinge shaft 23 is movably arranged at the top of the clamping seat 22. Both ends of the top of the hinge shaft 23 are installed with telescopic rods, and a transmission frame is movably arranged on the telescopic rods. The limit clamping plate 24 is installed at the top of the transmission frame. A cone with multiple rubber shafts clamped is arranged inside the limit clamping plate 24, which is used to limit and clamp the bottom of the shock absorber. The cone can be clamped inside the hinge hole of the shock absorber, and the effective contact area can be increased by means of the rubber shafts, reducing the situation of wear and deviation of the hinge ring during the clamping process, and reducing the impact of clamping deviation on the experimental data.

[0047] As Figure 4 and Figure 5 shown, in order to reduce the working intensity of subsequent cleaning and maintenance, a telescopic frame installed on the lifting plate 21 is arranged at the bottom of the lifting frame 4. A plurality of compression shafts are installed on the side wall of the lifting frame 4, and the movable distance of the compression shafts can be adjusted, which can be adjusted according to different proportions of metal particles and sand, reducing the situation of dust flying. The transmission ring 42 is installed at the top of the compression shaft;

[0048] The diversion ring 421 is conical and internally provided with multiple groups of concentric magnetic rings. A fixing ring is installed inside the diversion ring 421, and a plurality of reset shafts 431 with magnetic blocks clamped are installed on the fixing ring. A blocking ring 43 is connected to the diversion ring 421. One end of the blocking ring 43 is clamped on the reset shaft 431 and moves with the reset shaft 431. An annular storage cavity is formed between the blocking ring 43 and the diversion ring 421. The lifting plate 21 can drive the compression shaft at the bottom of the transmission ring 42 to reciprocate slightly, and can stack the metal particles and sand along the inclination angle of the diversion ring 421 into the annular storage cavity formed between the blocking ring 43 and the diversion ring 421, reducing the situation of debris flying during the operation of the equipment and facilitating subsequent cleaning and recovery.

[0049] As Figure 5As shown, a sealing snap ring 41 is provided inside the diversion ring 421. The sealing snap ring 41 is elastic and is clamped inside the lifting frame 4. A plurality of swing rods are provided at the top of the sealing snap ring 41, and a docking ring 44 is installed at the top of the swing rod. A clamping ring 5 is installed at the top of the docking ring 44. The clamping ring 5 is sleeved on the bottom of the shock absorber. The clamping ring 5 can move along with the shock absorber, and can pull the docking ring 44 and the swing rod at the bottom to move, playing a driving role.

[0050] As Figure 5 shown, a plurality of metal rings are provided on the sealing snap ring 41, and the metal rings are sleeved on the swing rods and correspond to the positions of the magnetic blocks. During the movement of the swing rods, under the action of magnetism, the reset shaft 431 can be pulled to move, the blocking ring 43 can move slightly, and the metal particles and grits accumulated inside the annular storage cavity can be tamped and extruded.

[0051] As Figure 5 shown, in order to reduce the accidental situation of lubricant leakage after the shock absorber is tested to the limit, an annular groove is opened at the top of the clamping ring 5, and an adsorption ring 51 is clamped inside the annular groove. The cross-section of the adsorption ring 51 is "U"-shaped and is made of sponge material. The lubricant can flow back along the shock absorber into the adsorption ring 51, and the excess lubricant can also drip onto the diversion ring 421, reducing its entry into the components of the clamping mechanism 2 and reducing the work intensity of subsequent cleaning and maintenance.

[0052] Preferably, a rubber cushion plate is installed on the top of the test bench main body 1, and the position of the rubber cushion plate corresponds to that of the lifting plate 21, which is used to reduce the vibration generated during the test.

[0053] Working principle: Firstly, when it is necessary to test the shock absorber, it can be clamped between the clamping mechanism 2 and the conduction mechanism 3, enabling rapid positioning of the shock absorber. As the conduction mechanism 3 and the lifting plate 21 start to operate, compression tests of the shock absorber can be carried out from multiple angles, making it more in line with the actual usage environment, and a relatively accurate service life can be obtained. When the shock absorber is running and being detected from multiple angles, the dynamic simulation tube 6 can be sleeved outside it, and sand and irregular metal particles are randomly conveyed to the outside of the shock absorber, which can cause knocking and wear on its spring and piston rod, simulating the usage environment of off-road models, thereby obtaining multiple groups of data of the shock absorber. During the positioning process, the clamping ring 5 can be sleeved on the outer wall of the shock absorber, and the end with the clamping ring 5 sleeved is clamped inside the limit clamping plate 24 for auxiliary clamping. The top of the shock absorber can be clamped at the bottom of the limit top block 34. After clamping, the position of the lifting frame 4 can be adjusted so that the docking ring 44 inside it is clamped at the bottom of the clamping ring 5. At this time, the diversion ring 421 and the blocking ring 43 can be located outside the bottom of the shock absorber, and can collect and process the metal particles and sand that fall from the inside of the dynamic simulation tube 6 under the subsequent simulation of the actual riding dust environment, reducing their accumulation in the clamping mechanism 2 after a single test, which requires operators to clean and maintain, affecting the subsequent disassembly and assembly efficiency;

[0054] Then, when detecting the performance of the shock absorber, the rotating table 31 and the transmission balance shaft 33 can be activated, enabling the angle of the shock absorber to tilt 360 degrees outwards. At this time, the lifting plate 21 at the bottom moves, enabling the shock absorber to be compressed under force, and the various data performances of the shock absorber can be detected under the condition of vibration at different angles. Compared with one-way detection, the obtained data is more in line with the actual situation. During the swinging process of the shock absorber, the counterweight ring 641 can drive the swing shaft 64 under the action of inertia, enabling the irregular metal particles and sand to be discharged from the conical tube 65, which can cause wear and impact on the shock-absorbing spring and piston rod outside the shock absorber, and the sand will also adhere to the surface of the piston rod, affecting the sealing gasket, etc. The ratio of the irregular metal particles and sand can be adjusted to determine the service life of the shock absorber for different regions, thereby obtaining values for different regions;

[0055] Finally, the irregular metal particles and gravel fall inside the diversion ring 421 under the action of gravity and accumulate together under the action of the magnetic ring. During the test, the lifting plate 21 can drive the compression shaft at the bottom of the transmission ring 42 to reciprocate slightly, so as to stack the metal particles and gravel along the inclination angle of the diversion ring 421 into the annular storage cavity formed between the blocking ring 43 and the diversion ring 421, reducing the situation of debris flying during the operation of the equipment and facilitating subsequent unified collection and treatment. When the limit is detected, the sealing gasket of the shock absorber may be damaged and oil leakage may occur. The lubricant can be transmitted along the outside of the shock absorber to the sleeved clamping ring 5, and the adsorption ring 51 can block it, reducing its dripping inside the clamping mechanism 2, which is not convenient for subsequent cleaning.

[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance test bench for a shock absorber, characterized in that: including, a test bench main body (1), with a limit table (11) movably arranged at its upper end. A clamping mechanism (2) is arranged on the main body of the test bench main body (1), and a conduction mechanism (3) corresponding to the clamping mechanism (2) is arranged at the bottom of the limit table (11); The clamping mechanism (2) includes a lifting plate (21), a clamping seat (22) and a lifting frame (4). A push shaft is arranged between the lifting plate (21) and the test bench main body (1). A pair of limit clamping plates (24) are arranged at the top of the clamping seat (22). A transmission ring (42) is arranged at the top of the lifting frame (4), and a diversion ring (421) for waste recycling is clamped inside the transmission ring (42); The conduction mechanism (3) includes a rotating table (31) and a guide rail frame (32) with a transmission balance shaft (33) movably clamped inside. A connecting plate with fixed frames (35) at both ends is installed at the bottom of the transmission balance shaft (33), and a dynamic simulation tube (6) is movably arranged at the bottom of the fixed frame (35); Among them, a transmission ring (63) for simulating material spraying is installed inside the dynamic simulation tube (6), and the material is composed of irregular metal particles and gravel.

2. The performance test bench for a shock absorber according to claim 1, characterized in that: Fixed slots are opened on the guide rail frame (32), the dynamic simulation tube (6) is movably arranged at the bottom, a limit top block (34) is arranged between the fixed frames (35), the limit top block (34) is connected to the bottom of the transmission balance shaft (33), and a clamping slot is arranged inside the limit top block (34) for clamping and limiting one end of the shock absorber.

3. The performance test bench for a shock absorber according to claim 1, characterized in that: An annular conveying groove is opened inside the transmission ring (63), and a plurality of circular ring protrusions communicating with the annular transmission groove are uniformly arranged on the inner wall of the transmission ring (63), and a conical tube (65) made of elastic material is arranged on the circular ring protrusion; A plurality of swing shafts (64) are installed at the top of the transmission ring (63), a counterweight ring (641) corresponding to the conical tube (65) is installed at one end of the swing shaft (64), and the counterweight ring (641) abuts against the circular ring protrusion to compress the conical tube (65) to reduce the situation of material leakage.

4. The performance test bench for a shock absorber according to claim 1, characterized in that: A storage box (62) communicating with the transmission ring (63) is installed on the outer wall of the dynamic simulation tube (6). A pair of transmission inserting rods are movably clamped on the side wall of the dynamic simulation tube (6), and a corrugated compression tube (61) is installed between the bottom of the inner wall of the transmission inserting rod and the bottom of the dynamic simulation tube (6) to play a role of blocking and guiding during the environmental simulation process.

5. The performance test bench for a shock absorber according to claim 1, characterized in that: A hinge shaft (23) is movably arranged at the top of the clamping seat (22). Expansion rods are installed at both ends of the top of the hinge shaft (23), and a transmission frame is movably arranged on the expansion rods. The limit clamping plates (24) are installed at the top of the transmission frame, and a frustum with multiple rubber shafts clamped inside is arranged on the inner side of the limit clamping plates (24) for limiting and clamping the bottom of the shock absorber.

6. The performance test bench for a shock absorber according to claim 1, characterized in that: A telescopic frame installed on the lifting plate (21) is arranged at the bottom of the lifting frame (4). A plurality of compression shafts are installed on the side wall of the lifting frame (4), and the movable distance of the compression shafts can be adjusted. The transmission ring (42) is installed at the top of the compression shafts; The flow guide ring (421) is conical and internally provided with multiple groups of concentric magnetic rings. A fixing ring is installed inside the flow guide ring (421), and a plurality of return shafts (431) with magnetic blocks clamped thereon are installed on the fixing ring. A blocking ring (43) is connected to the flow guide ring (421). One end of the blocking ring (43) is clamped on the return shaft (431) and moves with the return shaft (431). An annular storage cavity is formed between the blocking ring (43) and the flow guide ring (421).

7. The performance test bench for a shock absorber according to claim 1, wherein: A sealing clamping ring (41) is provided inside the flow guide ring (421). The sealing clamping ring (41) is elastic and clamped inside the lifting frame (4). A plurality of swing rods are provided at the top of the sealing clamping ring (41), and a docking ring (44) is installed at the top of the swing rod. A clamping ring (5) is installed at the top of the docking ring (44), and the clamping ring (5) is sleeved at the bottom of the shock absorber.

8. The performance test bench for a shock absorber according to claim 7, characterized in that: A plurality of metal rings are provided on the sealing clamping ring (41), and the metal rings are sleeved on the swing rods and correspond to the positions of the magnetic blocks.

9. The performance test bench for a shock absorber according to claim 7, characterized in that: An annular groove is formed at the top of the clamping ring (5), and an adsorption ring (51) is clamped inside the annular groove. The cross section of the adsorption ring (51) is "U"-shaped and is made of sponge material.

10. The performance test bench for a shock absorber according to claim 1, characterized in that: A rubber cushion plate is installed at the top of the test bench main body (1), and the position of the rubber cushion plate corresponds to that of the lifting plate (21) for reducing the vibration generated during the test.

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