Hydraulic damper test board

Abstract

The invention relates to the technical field of damper test benches, in particular to a hydraulic damper test bench which comprises a base, the upper end of the base is fixedly connected with a supporting plate, the upper end of the base is fixedly connected with a supporting block, a fixing mechanism is arranged in the supporting block, an air inlet pipe is fixedly connected in the supporting block, and an attaching mechanism is arranged at one end of the air inlet pipe. The laminating mechanism comprises a second sleeve, a third sleeve is fixedly connected to the interior of the second sleeve, a sliding plate is slidably connected to the interior of the third sleeve, the second sleeve is cylindrical and is provided with a notch, a protection mechanism is arranged in the second sleeve, an air bag is fixedly connected to the inner surface of the second sleeve, and a cooling mechanism is arranged on the inner surface of the air bag; a flowing mechanism is arranged in the second sleeve close to the sliding plate; the sliding plate in the second sleeve slides out, the small holes can spray high-pressure gas to form a local cooling area on the hydraulic damper, the water bag and the sleeve form a natural circulation system through the communicating pipe, and cold water supply and hot water replacement are achieved through the siphonic effect.

Description

Technical Field

[0001] The present invention relates to the technical field of damper test benches, and more specifically, to a hydraulic damper test bench. Background Art

[0002] A hydraulic damper test bench is a test device specifically used for testing the performance of hydraulic dampers. It integrates key components such as a hydraulic system, a control system, and a data acquisition and analysis system. It can simulate dynamic or static conditions in the actual working environment to accurately and reliably test hydraulic dampers. The hydraulic damper test bench can comprehensively evaluate various performance indicators of hydraulic dampers, such as damping force, response time, displacement characteristics, etc. These performance indicators are crucial for understanding the actual working ability of hydraulic dampers and optimizing their designs. During the production process of hydraulic dampers, the test bench can be used for quality inspection of finished products. Through high-precision sensors and data acquisition systems, the test bench can real-time monitor and record various performance indicators of the damper, such as deformation, stiffness, damping characteristics, response speed, etc. During the production process, the hydraulic damper test bench can also be used for batch detection of dampers. This can ensure that each product meets the performance requirements, improving production efficiency and product quality.

[0003] The existing test benches may generate dangerous factors such as high pressure and high temperature during the test process. If the operation is improper or the equipment fails, it may cause harm to the operators. The viscosity of the hydraulic oil and the performance of the damper are both affected by temperature. Therefore, maintaining a stable temperature can improve the accuracy of the test. Controlling the humidity of the test environment can prevent the hydraulic damper from being damaged due to excessive temperature during the test. High temperature accelerates the aging of rubber seals, resulting in seal failure and oil leakage and splashing. The high-temperature oxidation of hydraulic oil produces gum deposits, clogging the damping channels. High temperature causes the dissolved air in the oil to precipitate and form cavitation, generating noise and vibration that interfere with the test data. These defects not only affect the reliability of the test results but may also shorten the equipment life. In severe cases, it is necessary to interrupt the test for cooling, reducing the test efficiency. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a hydraulic damper test bench.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: a hydraulic damper test bench, including a base, a support plate is fixedly connected to the upper end of the base, a support block is fixedly connected to the upper end of the base, a fixing mechanism for fixing the hydraulic damper is arranged inside the support block, an air inlet pipe is fixedly connected to the inside of the support block, and a fitting mechanism for wrapping the surface of the non-output end of the hydraulic damper is arranged at one end of the air inlet pipe. The fitting mechanism includes a second sleeve, a third sleeve is fixedly connected to the inside of the second sleeve, a sliding plate is slidably connected to the inside of the third sleeve. The second sleeve is cylindrical and provided with a notch. A protection mechanism for closing the notch of the second sleeve is arranged inside the second sleeve. An airbag is fixedly connected to the inner surface of the second sleeve. A cooling mechanism for cooling the surface of the non-output end of the hydraulic damper is arranged on the inner surface of the airbag. A flow mechanism for circulating water is arranged inside the second sleeve near the sliding plate.

[0006] Preferably, a corrugated pipe is fixedly connected to the upper end of the support block, a movable block is fixedly connected to the upper end of the corrugated pipe, the output end of a hydraulic cylinder is fixedly connected to the upper end of the movable block, and the non-output end of the hydraulic cylinder is installed on the surface of the support plate.

[0007] Preferably, the air inlet pipe is fixedly connected to the support block on its surface, a first fixing block is fixedly connected to one end of the air inlet pipe, a first sliding rod is slidably connected to the inside of the first fixing block, a first hollow groove is opened inside the first sliding rod, a first piston is fixedly connected to one end of the first sliding rod, a rubber block is fixedly connected to the other end of the first sliding rod, and a first sleeve is sleeved outside the first piston.

[0008] Preferably, the fixing mechanism further includes a second piston, the second piston is slidably connected to the inside of the first sleeve, a second sliding rod is fixedly connected to the lower end of the second piston, a second fixing block is fixedly connected to the lower end of the second sliding rod, and a fixing rod is fixedly connected to one end of the second fixing block.

[0009] Preferably, the fitting mechanism includes a first connecting pipe, the first connecting pipe is fixedly connected to the first fixing block, a second connecting pipe is fixedly connected to one end of the first connecting pipe, a second sleeve is fixedly connected to one end of the first connecting pipe, and an airbag is fixedly connected to the inner surface of the second sleeve.

[0010] Preferably, the protection mechanism includes an air outlet pipe, the air outlet pipe is fixedly connected to the inner surface of the second sleeve, and a third sleeve is fixedly connected to the surface of the air outlet pipe.

[0011] Preferably, the protection mechanism further includes a sliding plate, the sliding plate is elastically connected inside the third sleeve through a compression spring, a second hollow groove is opened inside the sliding plate, and small holes are also opened inside the sliding plate.

[0012] Preferably, the cooling mechanism includes a water bag fixedly connected to the surface of the airbag. One end of the water bag is fixedly connected to a first connecting pipe, and one end of the water bag is fixedly connected to a second connecting pipe.

[0013] Preferably, the flow mechanism includes a rotating shaft rotatably connected to the second sleeve. One end of the rotating shaft is fixedly connected to a first fan blade.

[0014] Preferably, the flow mechanism further includes a second fan blade, and the other end of the rotating shaft is fixedly connected to the second fan blade.

[0015] Advantages of the present invention: For a hydraulic damper test bench according to the present invention, through the directional flow of high-pressure gas in a closed pipeline, the first piston is synchronously driven to move upward and the second piston is driven to move downward to form a coupled motion, realizing efficient energy transfer and component coordination, and then driving the rubber block to move upward and cooperating with the fixed rod to move downward to clamp and fix the damper. For a hydraulic damper test bench according to the present invention, when the sliding plate slides out, it will block the notch of the second sleeve, and small holes are provided inside the sliding plate. When the sliding plate slides out, high-pressure gas will be blown out from the small holes. The pores of the small holes are relatively small, and the high-pressure gas blown out from the inside of the small holes will cool down the hydraulic damper and the water bag. For a hydraulic damper test bench according to the present invention, a water bag is provided. When the airbag expands, the water bag will fit the surface of the non-output end of the hydraulic damper, and the water bag fits the surface of the non-output end of the pressure damper to cool down the hydraulic damper during the test. For a hydraulic damper test bench according to the present invention, the high-pressure gas forms a jet effect through the throttling action of the air outlet pipe, driving the first fan blade to drive the second fan blade to rotate to form a turbine structure, converting the gas pressure energy into rotational mechanical energy. The rotation of the second fan blade generates a centrifugal force field, promoting the hot water in the water bag to be discharged radially to the second sleeve. At the same time, the first connecting pipe forms a siphon effect to supplement cold water, constructing a natural circulation system without external pumping, so as to continuously and efficiently cool down the hydraulic damper. Description of the Drawings

[0016] The present invention will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 is the overall structural schematic diagram provided by the present invention; Figure 2 is the connection structural schematic diagram of the support block and the corrugated pipe; Figure 3 is the connection structural schematic diagram of the air inlet pipe and the first fixing block; Figure 4Schematic diagram of the rubber block structure; Figure 5 Schematic diagram of the first sleeve structure; Figure 6 Schematic diagram of the second sleeve structure; Figure 7 Schematic diagram of the sliding plate structure; Figure 8 is Figure 7 Schematic diagram of the enlarged structure of part A shown in; Figure 9 is Figure 7 Schematic diagram of the enlarged structure of part B shown in.

[0018] In the figure: 100, base; 101, support plate; 200, support block; 201, bellows; 202, movable block; 203, hydraulic cylinder; 300, fixing mechanism; 301, intake pipe; 302, first fixing block; 303, first sliding rod; 304, first hollow groove; 305, first piston; 306, rubber block; 307, first sleeve; 308, second piston; 309, second sliding rod; 310, second fixing block; 311, fixing rod; 400, fitting mechanism; 401, first connecting pipe; 402, second connecting pipe; 403, second sleeve; 404, airbag; 500, protection mechanism; 501, outlet pipe; 502, third sleeve; 503, sliding plate; 5031, second hollow groove; 5032, small hole; 600, cooling mechanism; 601, water bag; 602, first connecting pipe; 603, second connecting pipe; 700, flow mechanism; 701, rotating shaft; 702, first fan blade; 703, second fan blade. Detailed implementation manners

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0020] Such as Figures 1 - 9As shown in the figure, a hydraulic damper test bench according to the present invention includes a base 100. A support plate 101 is fixedly connected to the upper end of the base 100. A support block 200 is fixedly connected to the upper end of the base 100. A fixing mechanism 300 for fixing the hydraulic damper is arranged inside the support block 200. An air inlet pipe 301 is fixedly connected to the inside of the support block 200. A fitting mechanism 400 for wrapping the surface of the non-output end of the hydraulic damper is arranged at one end of the air inlet pipe 301. The fitting mechanism 400 includes a second sleeve 403. A third sleeve 502 is fixedly connected to the inside of the second sleeve 403. A sliding plate 503 is slidably connected to the inside of the third sleeve 502. The second sleeve 403 is cylindrical and provided with a notch. A protection mechanism 500 for closing the notch of the second sleeve 403 is arranged inside the second sleeve 403. An airbag 404 is fixedly connected to the inner surface of the second sleeve 403. A cooling mechanism 600 for cooling the surface of the non-output end of the hydraulic damper is arranged on the inner surface of the airbag 404. A flow mechanism 700 for circulating water is arranged near the sliding plate 503 inside the second sleeve 403.

[0021] Specifically, a bellows 201 is fixedly connected to the upper end of the support block 200. A movable block 202 is fixedly connected to the upper end of the bellows 201. The output end of a hydraulic cylinder 203 is fixedly connected to the upper end of the movable block 202. The non-output end of the hydraulic cylinder 203 is installed on the surface of the support plate 101.

[0022] In addition, the surface of the intake pipe 301 is fixedly connected to the support block 200. One end of the intake pipe 301 is fixedly connected to a first fixing block 302. A first sliding rod 303 is slidably connected inside the first fixing block 302. A first hollow groove 304 is formed inside the first sliding rod 303. One end of the first sliding rod 303 is fixedly connected to a first piston 305. The other end of the first sliding rod 303 is fixedly connected to a rubber block 306. A first sleeve 307 is sleeved outside the first piston 305. A second piston 308 is slidably connected inside the first sleeve 307. The lower end of the second piston 308 is fixedly connected to a second sliding rod 309. The lower end of the second sliding rod 309 is fixedly connected to a second fixing block 310. One end of the second fixing block 310 is fixedly connected to a fixing rod 311. When in use, the ring at the lower end of the hydraulic damper is sleeved inside the fixing rod 311 on the second fixing block 310, and the ring at the upper end of the hydraulic damper is sleeved inside the fixing rod 311 on the movable block 202. The fixing structures on the second fixing block 310 and the movable block 202 are the same. High-pressure gas with a constant pressure is introduced into the intake pipe 301. The gas enters the inside of the first fixing block 302 through the intake pipe 301. The high-pressure gas inside the first fixing block 302 enters the first sleeve 307 through the first hollow groove 304. The high-pressure gas enters the middle between the first piston 305 and the second piston 308 inside the first sleeve 307. The high-pressure gas inside the support block 200 will enter the inside of the movable block 202 through the corrugated pipe 201. The fixing structures on the second fixing block 310 and the movable block 202 are the same. Therefore, the fixing structure on the movable block 202 will fix the output end of the hydraulic damper. The hydraulic cylinder 203 drives the movable block 202 to move up and down. The up and down movement of the movable block 202 drives the hydraulic damper to compress and stretch, thereby testing the hydraulic damper.

[0023] Furthermore, the high-pressure gas inside the first fixing block 302 will also enter the inside of the first connecting pipe 401. The high-pressure gas in the first connecting pipe 401 will enter the inside of the airbag 404 through the second connecting pipe 402. The high-pressure gas inside the airbag 404 will be discharged from the air outlet pipe 501. The high-pressure gas discharged from the air outlet pipe 501 will enter the inside of the third sleeve 502. The high-pressure gas will push the first piston 305 to move upward, and the high-pressure gas will push the second piston 308 to move downward. The downward movement of the second piston 308 will drive the second sliding rod 309 to move downward. The downward movement of the second sliding rod 309 will drive the second fixing block 310 to move downward. The downward movement of the second fixing block 310 will drive the fixing rod 311 to move downward. The downward movement of the fixing rod 311 will press the hydraulic damper downward. The upward movement of the first piston 305 will drive the first sliding rod 303 to move upward. The upward movement of the first sliding rod 303 will drive the rubber block 306 to move upward. The upward movement of the rubber block 306 will cooperate with the fixing rod 311 to clamp and fix the damper; through the directional flow of high-pressure gas in the closed pipeline, the upward movement of the first piston 305 and the downward movement of the second piston 308 are synchronously driven to form a coupled movement, realizing the efficient transfer of energy and the coordination of components, and then driving the upward movement of the rubber block 306 to cooperate with the downward movement of the fixing rod 311 to clamp and fix the damper.

[0024] It should be noted that the fitting mechanism 400 includes a first connecting pipe 401. The first connecting pipe 401 is fixedly connected to the first fixing block 302. One end of the first connecting pipe 401 is fixedly connected to a second connecting pipe 402. One end of the first connecting pipe 401 is fixedly connected to a second sleeve 403. The inner surface of the second sleeve 403 is fixedly connected to an airbag 404; the high-pressure gas entering the inside of the third sleeve 502 will enter the inside of the second hollow groove 5031. The high-pressure gas inside the second hollow groove 5031 will push the sliding plate 503 to slide out of the third sleeve 502. The sliding out of the sliding plate 503 will block the notch of the second sleeve 403. The second sleeve 403 is made of copper and has good thermal conductivity. The second sleeve 403 is in a cylindrical shape and is provided with an opening. A hydraulic damper can be placed at the opening of the second sleeve 403. The opening of the second sleeve 403 is provided for the convenience of placing the hydraulic damper in the second sleeve 403; by setting the sliding out of the sliding plate 503 to block the notch of the second sleeve 403, and a small hole 5032 is provided inside the sliding plate 503. When the sliding plate 503 slides out, the high-pressure gas inside it will be blown out. The pores of the small hole 5032 are relatively small, and the high-pressure gas blown out from the inside of the small hole 5032 will cool the hydraulic damper and the water bag 601.

[0025] It is worth mentioning that the protection mechanism 500 includes an air outlet pipe 501, the air outlet pipe 501 is fixedly connected to the inner surface of the second sleeve 403, a third sleeve 502 is fixedly connected to the surface of the air outlet pipe 501, a sliding plate 503 is elastically connected to the inside of the third sleeve 502 through a compression spring, a second hollow groove 5031 is formed inside the sliding plate 503, and a small hole 5032 is also formed inside the sliding plate 503.

[0026] Specifically, the cooling mechanism 600 includes a water bag 601, the water bag 601 is fixedly connected to the surface of the airbag 404, one end of the water bag 601 is fixedly connected to a first communication pipe 602, and one end of the water bag 601 is fixedly connected to a second communication pipe 603; the inside of the water bag 601 and the inside of the second sleeve 403 are filled with water, the water bag 601 is communicated with the second sleeve 403 through the first communication pipe 602, and the water bag 601 is also communicated with the second sleeve 403 through the second communication pipe 603. The first communication pipe 602 is made of rubber and has a certain elasticity. The water bag 601 will fit the surface of the non-output end of the hydraulic damper when the airbag 404 expands. Several water bags 601 are arranged on the surface of the airbag 404, and the water bags 601 are arranged in strips at equal intervals on the surface of the airbag 404; by using the provided water bags 601, the water bags 601 will fit the surface of the non-output end of the hydraulic damper when the airbag 404 expands, and the water bags 601 fit the surface of the non-output end of the pressure damper to cool the hydraulic damper under test.

[0027] Finally, the flow mechanism 700 includes a rotating shaft 701, which is rotatably connected to the second sleeve 403. One end of the rotating shaft 701 is fixedly connected with a first fan blade 702, and the other end of the rotating shaft 701 is fixedly connected with a second fan blade 703. The high-pressure gas in the airbag 404 will be discharged through the air outlet pipe 501 with smaller pores. The discharged high-pressure gas in the air outlet pipe 501 will drive the first fan blade 702 to rotate. The rotation of the first fan blade 702 will drive the rotating shaft 701 to rotate. The rotation of the rotating shaft 701 will drive the second fan blade 703 to rotate. The rotation of the second fan blade 703 will drive the relatively hot water in the water bag 601 to flow out into the second sleeve 403. The cold water inside the second sleeve 403 will flow into the inside of the water bag 601 through the first connecting pipe 602. The second sleeve 403 is made of copper and is arranged with a large contact area with the outside world, so that the second sleeve 403 dissipates heat quickly. Through the high-precision sensors and data acquisition system on the upper end of the support plate 101, the hydraulic damper is detected. The throttling effect of the high-pressure gas passing through the air outlet pipe 501 forms a jet effect, driving the first fan blade 702 to drive the second fan blade 703 to rotate to form a turbine structure, converting the gas pressure energy into rotational mechanical energy. The rotation of the second fan blade 703 generates a centrifugal force field, prompting the hot water in the water bag 601 to be discharged radially into the second sleeve 403. At the same time, the first connecting pipe 602 forms a siphon effect to supplement cold water, constructing a natural circulation system without external pumping, so as to continuously and efficiently cool the hydraulic damper.

[0028] Working principle: For the hydraulic damper with collars provided at both the upper and lower ends, when the present invention is in use, the ring at the lower end of the hydraulic damper is sleeved in the fixing rod 311 on the second fixing block 310, and the ring at the upper end of the hydraulic damper is sleeved in the fixing rod 311 on the movable block 202. The fixing structures on the second fixing block 310 and the movable block 202 are the same. High-pressure gas with a constant pressure is introduced into the inside of the air inlet pipe 301. The gas enters the inside of the first fixing block 302 through the air inlet pipe 301. The high-pressure gas inside the first fixing block 302 enters the first sleeve 307 through the first hollow groove 304. The high-pressure gas enters the middle of the first piston 305 and the second piston 308 inside the first sleeve 307. The high-pressure gas inside the support block 200 will enter the inside of the movable block 202 through the corrugated pipe 201. The fixing structures on the second fixing block 310 and the movable block 202 are the same. Therefore, the fixing structure on the movable block 202 will fix the output end of the hydraulic damper. The hydraulic cylinder 203 drives the movable block 202 to move up and down, and the up and down movement of the movable block 202 drives the hydraulic damper to compress and stretch, so as to test the hydraulic damper.

[0029] The high-pressure gas inside the first fixed block 302 will also enter the inside of the first connecting pipe 401. The high-pressure gas in the first connecting pipe 401 will enter the inside of the airbag 404 through the second connecting pipe 402. The high-pressure gas inside the airbag 404 will be discharged from the air outlet pipe 501. The high-pressure gas discharged from the air outlet pipe 501 will enter the inside of the third sleeve 502. The high-pressure gas will push the first piston 305 upward, and the high-pressure gas will push the second piston 308 downward. The downward movement of the second piston 308 will drive the second sliding rod 309 downward. The downward movement of the second sliding rod 309 will drive the second fixed block 310 downward. The downward movement of the second fixed block 310 will drive the fixed rod 311 downward. The downward movement of the fixed rod 311 will press the hydraulic damper downward. The upward movement of the first piston 305 will drive the first sliding rod 303 upward. The upward movement of the first sliding rod 303 will drive the rubber block 306 upward. The upward movement of the rubber block 306 will cooperate with the fixed rod 311 to clamp and fix the damper. Through the directional flow of high-pressure gas in the closed pipeline, the upward movement of the first piston 305 and the downward movement of the second piston 308 are synchronously driven to form a coupled movement, realizing the efficient transfer of energy and the cooperation of components. Furthermore, the upward movement of the rubber block 306 will cooperate with the downward movement of the fixed rod 311 to clamp and fix the damper.

[0030] The high-pressure gas entering the inside of the third sleeve 502 will enter the inside of the second hollow groove 5031. The high-pressure gas inside the second hollow groove 5031 will push the sliding plate 503 to slide out of the third sleeve 502. The sliding out of the sliding plate 503 will block the notch of the second sleeve 403. The second sleeve 403 is made of copper and has good thermal conductivity. The second sleeve 403 is cylindrical and provided with an opening. A hydraulic damper can be placed at the opening of the second sleeve 403. The opening of the second sleeve 403 is set to facilitate the placement of the hydraulic damper in the second sleeve 403. By setting the sliding plate 503 to slide out and block the notch of the second sleeve 403, and by providing small holes 5032 inside the sliding plate 503, when the sliding plate 503 slides out, the high-pressure gas inside the small holes 5032 will be blown out. The pores of the small holes 5032 are relatively small, and the high-pressure gas blown out from the small holes 5032 will cool the hydraulic damper and the water bag 601.

[0031] The interior of the water bag 601 and the interior of the second sleeve 403 are filled with water. The water bag 601 is connected to the second sleeve 403 through the first connecting pipe 602, and the water bag 601 is also connected to the second sleeve 403 through the second connecting pipe 603. The first connecting pipe 602 is made of rubber and has a certain elasticity. The water bag 601 will fit the surface of the non-output end of the hydraulic damper when the airbag 404 expands. Several water bags 601 are arranged on the surface of the airbag 404, and the water bags 601 are arranged in strips at equal intervals on the surface of the airbag 404. With the arranged water bags 601, the water bags 601 will fit the surface of the non-output end of the hydraulic damper when the airbag 404 expands. The water bags 601 fit the surface of the non-output end of the damper to cool the hydraulic damper under test.

[0032] The high-pressure gas in the airbag 404 will be discharged through the air outlet pipe 501 with smaller pores. The discharged high-pressure gas in the air outlet pipe 501 will drive the first fan blade 702 to rotate. The rotation of the first fan blade 702 will drive the rotating shaft 701 to rotate. The rotation of the rotating shaft 701 will drive the second fan blade 703 to rotate. The rotation of the second fan blade 703 will drive the relatively hot water in the water bag 601 to flow out into the second sleeve 403. The cold water inside the second sleeve 403 will flow into the interior of the water bag 601 through the first connecting pipe 602. The second sleeve 403 is made of copper and is arranged with a large contact area with the outside world, so that the second sleeve 403 dissipates heat quickly. The hydraulic damper is detected through the high-precision sensor and data acquisition system at the upper end of the support plate 101. The throttling effect of the high-pressure gas through the air outlet pipe 501 forms a jet effect, driving the first fan blade 702 to drive the second fan blade 703 to rotate to form a turbine structure, converting the gas pressure energy into rotational mechanical energy. The rotation of the second fan blade 703 generates a centrifugal force field, prompting the hot water in the water bag 601 to be discharged radially into the second sleeve 403. At the same time, the first connecting pipe 602 forms a siphon effect to supplement cold water, constructing a natural circulation system without external pumping, so as to continuously and efficiently cool the hydraulic damper.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic damper test bench, comprising a base (100), wherein the upper end of the base (100) is fixedly connected with a support plate (101), and it is characterized in that: A support block (200) is fixedly connected to the upper end of the base (100). A fixing mechanism (300) for fixing a hydraulic damper is arranged inside the support block (200). An air inlet pipe (301) is fixedly connected inside the support block (200). One end of the air inlet pipe (301) is provided with a fitting mechanism (400) for wrapping the surface of the non-output end of the hydraulic damper. The fitting mechanism (400) includes a second sleeve (403). A third sleeve (502) is fixedly connected inside the second sleeve (403). A sliding plate (503) is slidably connected inside the third sleeve (502). The second sleeve (403) is cylindrical and provided with a notch. A protection mechanism (500) for closing the notch of the second sleeve (403) is arranged inside the second sleeve (403). An airbag (404) is fixedly connected to the inner surface of the second sleeve (403). A cooling mechanism (600) for cooling the surface of the non-output end of the hydraulic damper is arranged on the inner surface of the airbag (404). A flow mechanism (700) for circulating water is arranged inside the second sleeve (403) near the sliding plate (503).

2. The hydraulic damper test bench according to claim 1, characterized in that: A corrugated pipe (201) is fixedly connected to the upper end of the support block (200). A movable block (202) is fixedly connected to the upper end of the corrugated pipe (201). The output end of a hydraulic cylinder (203) is fixedly connected to the upper end of the movable block (202). The non-output end of the hydraulic cylinder (203) is installed on the surface of the support plate (101).

3. The hydraulic damper test bench according to claim 2, characterized in that: The surface of the air inlet pipe (301) is fixedly connected to the support block (200). A first fixing block (302) is fixedly connected to one end of the air inlet pipe (301). A first sliding rod (303) is slidably connected inside the first fixing block (302). A first hollow groove (304) is formed inside the first sliding rod (303). A first piston (305) is fixedly connected to one end of the first sliding rod (303). A rubber block (306) is fixedly connected to the other end of the first sliding rod (303). A first sleeve (307) is sleeved outside the first piston (305).

4. A hydraulic damper test bench according to claim 3, characterized in that: The fixing mechanism (300) further includes a second piston (308). The second piston (308) is slidably connected inside the first sleeve (307). A second sliding rod (309) is fixedly connected to the lower end of the second piston (308). A second fixing block (310) is fixedly connected to the lower end of the second sliding rod (309). A fixing rod (311) is fixedly connected to one end of the second fixing block (310).

5. The hydraulic damper test bench according to claim 4, characterized in that: The fitting mechanism (400) includes a first connecting pipe (401). The first connecting pipe (401) is fixedly connected to the first fixing block (302). A second connecting pipe (402) is fixedly connected to one end of the first connecting pipe (401). A second sleeve (403) is fixedly connected to one end of the first connecting pipe (401). An airbag (404) is fixedly connected to the inner surface of the second sleeve (403).

6. The hydraulic damper test bench according to claim 5, characterized in that: The protection mechanism (500) includes an air outlet pipe (501), the air outlet pipe (501) is fixedly connected to the inner surface of the second sleeve (403), and a third sleeve (502) is fixedly connected to the surface of the air outlet pipe (501).

7. The hydraulic damper test bench according to claim 6, wherein: The protection mechanism (500) further includes a sliding plate (503), the sliding plate (503) is elastically connected to the inside of the third sleeve (502) by a compression spring, a second hollow groove (5031) is formed inside the sliding plate (503), and a small hole (5032) is also formed inside the sliding plate (503).

8. A hydraulic damper test bench according to claim 7, characterized in that: The cooling mechanism (600) includes a water bag (601), the water bag (601) is fixedly connected to the surface of the airbag (404), a first communication pipe (602) is fixedly connected to one end of the water bag (601), and a second communication pipe (603) is fixedly connected to one end of the water bag (601).

9. The hydraulic damper test bench according to claim 8, characterized in that: The flow mechanism (700) includes a rotating shaft (701), the rotating shaft (701) is rotatably connected to the second sleeve (403), and a first fan blade (702) is fixedly connected to one end of the rotating shaft (701).

10. A hydraulic damper test bench according to claim 9, characterized in that: The flow mechanism (700) further includes a second fan blade (703), and a second fan blade (703) is fixedly connected to the other end of the rotating shaft (701).

Images