A performance testing device for magnetorheological fluid damper

Abstract

The present invention provides a performance testing device for a magnetorheological fluid damper. The performance testing device for a magnetorheological fluid damper comprises a base, a plurality of support columns are symmetrically fixedly mounted on the top of the base, a same operating table is fixedly mounted on the top of the plurality of support columns, a mounting seat and two first mounting frames are fixedly mounted on the top of the operating table; an adjustment mechanism, the adjustment mechanism is arranged on the two first mounting frames; a first limiting mechanism, the first limiting mechanism is arranged on the mounting seat. The performance testing device for a magnetorheological fluid damper provided by the present invention has the advantage of being able to perform performance tests on a plurality of magnetorheological fluid dampers at the same time, which is conducive to improving the test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of damper production and processing, and in particular to a performance testing device for a magnetorheological fluid damper. Background Art

[0002] Rheological fluid damper is a kind of intelligent damper that has emerged in recent years. The research on the shock absorption technology of magnetorheological fluid damping shock absorber has become one of the current hot topics. It is a damping controllable device, and the medium filled inside is magnetorheological fluid. The main components of magnetorheological fluid are magnetic particles of micron or nanometer size, carrier fluid and stabilizer. The working principle of magnetorheological fluid damper is to obtain magnetic fields of different intensities by adjusting the current in the excitation coil, thereby changing the flow characteristics of magnetorheological fluid in the damping channel.

[0003] During the production and processing of rheological fluid dampers, in order to ensure product quality, factory quality inspectors will conduct random inspections on the produced rheological fluid dampers and use performance testing equipment to perform performance tests on the products. However, the performance testing equipment currently used by quality inspectors can only test one rheological fluid damper at a time. When performing large-scale sampling tests, quality inspectors need to spend a lot of time operating the tests, which results in a large workload and slow test efficiency.

[0004] Therefore, it is necessary to provide a new performance testing device for magnetorheological fluid damper to solve the above technical problems. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a performance testing device for magnetorheological fluid dampers which can perform performance tests on a plurality of magnetorheological fluid dampers at the same time and is conducive to improving the testing efficiency.

[0006] In order to solve the above technical problems, the performance testing device of the magnetorheological fluid damper provided by the present invention includes: a base, a plurality of support columns are symmetrically fixedly installed on the top of the base, a same operating table is fixedly installed on the top of the plurality of support columns, a mounting seat and two first mounting frames are fixedly installed on the top of the operating table; an adjusting mechanism, the adjusting mechanism is arranged on the two first mounting frames; a first limiting mechanism, the first limiting mechanism is arranged on the mounting seat.

[0007] Preferably, the adjustment mechanism includes two threaded rods, a slide plate, two guide rods, four fixed blocks, two first motors and a tensile testing mechanism, the two threaded rods are respectively rotatably mounted on the two first mounting frames, the bottom ends of the two threaded rods respectively extend out of the two first mounting frames, the slide plate is threadedly sleeved on the two threaded rods, the two guide rods are both slidably mounted on the slide plate, the four fixed blocks are respectively fixedly mounted on the two ends of the two guide rods, the four fixed blocks are respectively fixedly connected to the corresponding two first mounting frames, the two first motors are respectively fixedly mounted on the two first mounting frames, the output shafts of the two first motors are fixedly mounted with first couplings, the top ends of the two first couplings are respectively fixedly connected to one end of the two threaded rods, and the tensile testing mechanism is arranged on the slide plate.

[0008] Preferably, the tensile testing mechanism comprises a second mounting frame, a rotating shaft, a mounting plate, a plurality of cylinders, a second motor, a plurality of plug blocks, a groove block, a mounting plate, two first electric telescopic rods, two limit blocks and a second limit mechanism, the second mounting frame is fixedly mounted on the top of the slide, the rotating shaft is rotatably mounted on the top of the second mounting frame, the mounting plate is fixedly mounted on the bottom end of the rotating shaft, a plurality of the cylinders are fixedly mounted on the mounting plate, the plurality of the cylinders are distributed in a circular array, the second motor is fixedly mounted on the top of the second mounting frame, and a plurality of the cylinders are fixedly mounted on the output shaft of the second motor. A second coupling, the bottom end of the second coupling is fixedly connected to the top end of the rotating shaft, a plurality of plug blocks are respectively fixedly mounted on the top ends of the plurality of cylinder output rods, the groove block is sleeved on one of the plug blocks, the mounting plate is fixedly mounted on the bottom end of the groove block, the two first electric telescopic rods are symmetrically fixedly mounted on the top of the mounting plate, the two limit blocks are respectively fixedly mounted on the top ends of the two first electric telescopic rod output rods, the ends of the two limit blocks close to each other both penetrate the groove block and are clamped with the corresponding plug blocks, and the second limit mechanism is arranged on the mounting plate.

[0009] Preferably, the first limiting mechanism includes a plurality of slide grooves, a plurality of second mounting blocks, a plurality of third electric telescopic rods and a plurality of second limiting plates, the slide grooves are opened at the top of the mounting seat, a plurality of second mounting blocks are fixedly mounted on the top of the mounting seat, a plurality of third electric telescopic rods are respectively fixedly mounted on the plurality of second mounting blocks, a plurality of second limiting plates are respectively fixedly mounted on the top ends of the plurality of third electric telescopic rod output rods, and the bottom ends of the plurality of second limiting plates extend into the corresponding plurality of slide grooves.

[0010] Preferably, the second limiting mechanism includes multiple first mounting blocks, multiple second electric telescopic rods and multiple first limiting plates, multiple first mounting blocks are fixedly mounted on the bottom of the mounting plate, multiple second electric telescopic rods are respectively fixedly mounted on the multiple first mounting blocks, and multiple first limiting plates are respectively fixedly mounted on the top ends of the output rods of the multiple second electric telescopic rods.

[0011] Preferably, a protective box is fixedly installed on the top of the operating table, and a meter-controlled cylinder controller and a control switch are fixedly installed on one side of the protective box. The meter-controlled cylinder controller is compatible with the multiple cylinders, and the control switch is compatible with the first motor and the second motor.

[0012] Preferably, a through opening is provided on the slide plate, and the through opening is adapted to be matched with output rods of the plurality of cylinders.

[0013] Preferably, the two first mounting frames are each provided with a through slot, and the two through slots are adapted to the two threaded rods and the slide plate.

[0014] Preferably, placement plates are fixedly mounted on both sides of the base, and placement baskets are placed on both placement plates.

[0015] Preferably, the protection box is made of transparent acrylic material, a plurality of hinges are fixedly installed on one side of the protection box, a same box door is fixedly installed on the plurality of hinges, the box door is adapted to the protection box, and an observation window is provided on the box door.

[0016] Compared with the related art, the performance testing device for the magnetorheological fluid damper provided by the present invention has the following beneficial effects:

[0017] The present invention provides a performance testing device for a magnetorheological fluid damper:

[0018] Through the provided base, multiple support columns and operating table, a stable device frame can be formed, which is convenient for installing components. Through the two first motors in the adjustment mechanism, the output shaft drives the corresponding threaded rod to rotate during operation, and the slide plate can be driven to rise to adjust the height of the tensile test mechanism, which is suitable for performance testing of magnetorheological fluid dampers of different heights. Through the cylinder in the tensile test mechanism, the output rod can drive the mounting plate to reciprocate during operation, and the telescopic performance test of multiple magnetorheological fluid dampers after being fixed can be performed. Compared with the traditional single test device, this test can effectively improve the test efficiency;

[0019] By setting the first limit mechanism in conjunction with the second limit mechanism, after simple operation, multiple magnetorheological fluid dampers that need to be tested can be fixed to facilitate subsequent tensile testing. The protective box set in conjunction with the box door can shield the components from falling dust. At the same time, closing the box door during testing can also prevent defective magnetorheological fluid dampers from breaking and injuring people, which is conducive to safe testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a front cross-sectional structure of a preferred embodiment of a performance testing device for a magnetorheological fluid damper provided by the present invention;

[0021] Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG.

[0022] Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B shown in FIG.

[0023] Figure 4 for Figure 1 An enlarged schematic diagram of the structure of part C shown in FIG.

[0024] Figure 5 for Figure 1 An enlarged structural diagram of part D shown in FIG.

[0025] Figure 6 for Figure 1 An enlarged structural diagram of part E shown in FIG.

[0026] Figure 7 It is a structural schematic diagram of the first mounting frame in the present invention;

[0027] Figure 8 It is a schematic diagram of the main structure of the present invention.

[0028] Numbers in the figure: 1. base; 2. support column; 3. operating table; 4. mounting seat; 5. first mounting frame; 6. threaded rod; 7. slide plate; 8. guide rod; 9. fixing block; 10. first motor; 11. second mounting frame; 12. rotating shaft; 13. mounting plate; 14. cylinder; 15. second motor; 16. plug block; 17. groove block; 18. mounting plate; 19. first electric telescopic rod; 20. limit block; 21. first mounting block; 22. second electric telescopic rod; 23. first limit plate; 24. slide groove; 25. second mounting block; 26. third electric telescopic rod; 27. second limit plate; 28. protective box; 29. ​​meter-controlled cylinder controller; 30. control switch; 31. magnetorheological fluid damper body. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0030] Please refer to Figure 1-Figure 8 ,in, Figure 1 A schematic diagram of a front cross-sectional structure of a preferred embodiment of a performance testing device for a magnetorheological fluid damper provided by the present invention; Figure 2 for Figure 1 An enlarged structural diagram of part A shown in FIG. Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B shown in FIG. Figure 4 for Figure 1 An enlarged schematic diagram of the structure of part C shown in FIG. Figure 5 for Figure 1 An enlarged structural diagram of part D shown in FIG. Figure 6 for Figure 1 An enlarged structural diagram of part E shown in FIG. Figure 7 It is a structural schematic diagram of the mounting frame in the present invention; Figure 8 The main structural diagram of the present invention. The performance test device of the magnetorheological fluid damper comprises: a base 1, a plurality of support columns 2 are symmetrically fixedly installed on the top of the base 1, a same operating table 3 is fixedly installed on the top of the plurality of support columns 2, a mounting seat 4 and two first mounting frames 5 are fixedly installed on the top of the operating table 3; an adjustment mechanism, the adjustment mechanism is arranged on the two first mounting frames 5; a first limiting mechanism, the first limiting mechanism is arranged on the mounting seat 4, and a stable device frame can be formed by the arranged base 1, the plurality of support columns 2 and the operating table 3, which is convenient for installing components.

[0031] The adjusting mechanism comprises two threaded rods 6, a slide plate 7, two guide rods 8, four fixed blocks 9, two first motors 10 and a tensile testing mechanism. The two threaded rods 6 are rotatably mounted on the two first mounting frames 5 respectively. The bottom ends of the two threaded rods 6 extend out of the two first mounting frames 5 respectively. The slide plate 7 is threadedly sleeved on the two threaded rods 6. The two guide rods 8 are slidably mounted on the slide plate 7. The four fixed blocks 9 are respectively fixedly mounted on the two ends of the two guide rods 8. The four fixed blocks 9 are respectively fixedly connected to the corresponding two first mounting frames 5. The two first motors 10 are respectively fixedly mounted on the two first mounting frames 5. The output shafts of the two first motors 10 are fixedly mounted with first couplings. The top ends of the two first couplings are respectively fixedly connected to one end of the two threaded rods 6. The tensile testing mechanism is arranged on the slide plate 7. Through the two first motors 10 in the adjusting mechanism, the output shaft drives the corresponding threaded rod 6 to rotate during operation, and the slide plate 7 can be driven to rise and adjust the height of the tensile testing mechanism, which is suitable for performance testing of magnetorheological fluid dampers of different heights.

[0032] The tensile testing mechanism includes a second mounting frame 11, a rotating shaft 12, a mounting plate 13, a plurality of cylinders 14, a second motor 15, a plurality of plug blocks 16, a groove block 17, a mounting plate 18, two first electric telescopic rods 19, two limit blocks 20 and a second limit mechanism, the second mounting frame 11 is fixedly mounted on the top of the slide 7, the rotating shaft 12 is rotatably mounted on the top of the second mounting frame 11, the mounting plate 13 is fixedly mounted on the bottom end of the rotating shaft 12, a plurality of the cylinders 14 are fixedly mounted on the mounting plate 13, and the plurality of the cylinders 14 are distributed in a circular array, the second motor 15 is fixedly mounted on the top of the second mounting frame 11, a second coupling is fixedly mounted on the output shaft of the second motor 15, the bottom end of the second coupling is fixedly connected to the top end of the rotating shaft 12, a plurality of plug blocks 16 are fixedly mounted on the output shaft of the second motor 15, and the bottom end of the second coupling is fixedly connected to the top end of the rotating shaft 12, and a plurality of plug blocks 16 are fixedly mounted on the output shaft of the second motor 15. They are respectively fixedly mounted on the top ends of the output rods of the plurality of cylinders 14, the groove block 17 is sleeved on one of the plug blocks 16, the mounting plate 18 is fixedly mounted on the bottom end of the groove block 17, the two first electric telescopic rods 19 are symmetrically fixedly mounted on the top of the mounting plate 18, the two limit blocks 20 are respectively fixedly mounted on the top ends of the output rods of the two first electric telescopic rods 19, the ends of the two limit blocks 20 close to each other both penetrate the groove block 17 and are clamped with the corresponding plug blocks 16, the second limit mechanism is arranged on the mounting plate 18, by stretching the cylinder 14 in the test mechanism, the output rod can drive the mounting plate 18 to reciprocate during operation, and the telescopic performance test of the plurality of fixed magnetorheological fluid dampers can be performed, and this test can effectively improve the test efficiency compared with the traditional single test device.

[0033] The first limiting mechanism includes a plurality of slide grooves 24, a plurality of second mounting blocks 25, a plurality of third electric telescopic rods 26 and a plurality of second limiting plates 27. The slide grooves 24 are arranged at the top of the mounting seat 4. The plurality of second mounting blocks 25 are fixedly mounted on the top of the mounting seat 4. The plurality of third electric telescopic rods 26 are respectively fixedly mounted on the plurality of second mounting blocks 25. The plurality of second limiting plates 27 are respectively fixedly mounted on the top ends of the output rods of the plurality of third electric telescopic rods 26. The bottom ends of the plurality of second limiting plates 27 extend into the corresponding plurality of slide grooves 24. By coordinating the first limiting mechanism with the second limiting mechanism, a plurality of magnetorheological fluid dampers to be tested can be fixed after a simple operation, so as to facilitate subsequent tensile testing.

[0034] The second limiting mechanism includes multiple first mounting blocks 21, multiple second electric telescopic rods 22 and multiple first limiting plates 23. The multiple first mounting blocks 21 are fixedly mounted on the bottom of the mounting plate 18, the multiple second electric telescopic rods 22 are respectively fixedly mounted on the multiple first mounting blocks 21, and the multiple first limiting plates 23 are respectively fixedly mounted on the top ends of the output rods of the multiple second electric telescopic rods 22.

[0035] A protective box 28 is fixedly installed on the top of the operating table 3, and a meter-controlled cylinder controller 29 and a control switch 30 are fixedly installed on one side of the protective box 28. The meter-controlled cylinder controller 29 is compatible with the multiple cylinders 14, and the control switch 30 is compatible with the first motor 10 and the second motor 15. The protective box 28 is set in conjunction with the box door to shield the components from falling dust. At the same time, closing the box door during testing can also prevent defective magnetorheological fluid dampers from collapsing and injuring people, which is conducive to safe testing.

[0036] The slide plate 7 is provided with a through opening, and the through opening is adapted to be matched with the output rods of the plurality of cylinders 14 .

[0037] The two first mounting frames 5 are each provided with a through slot, and the two through slots are adapted to the two threaded rods 6 and the slide plate 7 .

[0038] Placement plates are fixedly mounted on both sides of the base 1, and placement baskets are placed on the two placement plates.

[0039] The protection box 28 is made of transparent acrylic material. A plurality of hinges are fixedly installed on one side of the protection box 28. A same box door is fixedly installed on the plurality of hinges. The box door is adapted to the protection box 28 and an observation window is provided on the box door.

[0040] The working principle of the performance testing device for the magnetorheological fluid damper provided by the present invention is as follows:

[0041] When using this device to test the magnetorheological fluid damper to be tested, the personnel first open the box door, and then adjust the height of the mounting plate 18 according to the height of the magnetorheological fluid damper to be tested. The two first motors 10 can be started during adjustment. The two first motors 10 run synchronously, and the output shafts will drive the corresponding threaded rods 6 to rotate. The rotation of the threaded rods 6 will drive the slide plate 7 to move. After the slide plate 7 is adjusted to an appropriate height, the first motor 10 can be turned off. In this way, the height of the magnetorheological fluid damper to be tested is adjusted, which is suitable for performance testing of magnetorheological fluid dampers of different heights. After the adjustment is completed, the two ends of the magnetorheological fluid damper are aligned and placed between the corresponding two first limit plates 23 and the two second limit plates 27 in turn, and then the personnel start the corresponding The second electric telescopic rod 22 and the third electric telescopic rod 26, the corresponding second electric telescopic rod 22 and the third electric telescopic rod 26 are extended when the output rod is extended, which will push the corresponding first limit plate 23 and the second limit plate 27 to approach each other, and then the corresponding two first limit plates 23 and the two second limit plates 27 will fit with the two ends of the magnetorheological fluid damper to clamp and fix them. After fixing multiple magnetorheological fluid dampers in this way, the table-controlled cylinder controller 29 is operated to set the number of operations of the cylinder 14. After the setting is completed, it is started. When the cylinder 14 is running, the output rod retracts, and the mounting plate 18 rises accordingly. The piston rod of the magnetorheological fluid damper will be pulled out, and the output rod of the cylinder 14 extends out to push the mounting plate 18 down, and the magnetorheological fluid damper The piston rod is then reset, and after the cylinder 14 has run the number of times set by the meter-controlled cylinder controller 29, the cylinder 14 will stop running. The stretching and reset tests are repeated multiple times in sequence to test whether the telescopic performance of the magnetorheological fluid damper is qualified, and multiple magnetorheological fluid dampers can be tested at the same time, which can effectively improve the test efficiency. During the test, the cylinders 14 with different cylinder diameters can be replaced according to actual needs for the stretching test. When replacing the cylinder 14, the personnel can first start the first electric telescopic rod 19, and the first electric telescopic rod 19 runs to retract the output rod. The limit block 20 moves accordingly and disengages from the slot on the plug block 16, and the plug block 16 loses its limit. Then the personnel can start the cylinder 14 to retract its output rod. After the output rod of the cylinder 14 retracts, then Start the second motor 15. When the second motor 15 is running, the output rod will drive the rotating shaft 12 and the mounting plate 13 to rotate slowly, and the position of the cylinder 14 can be adjusted accordingly. When the cylinder 14 of a suitable cylinder diameter is adjusted to the through position, the second motor 15 can be turned off, and then the cylinder 14 is started. The corresponding output rod of the cylinder 14 extends out, which will drive the corresponding plug block 16 to be inserted into the groove block 17. Then the personnel starts the first electric telescopic rod 19. The output rod of the first electric telescopic rod 19 extends out to drive the limit block 20 to reset. After the limit block 20 is reset, it will be inserted into the slot on the plug block 16 to limit and fix it. According to this operation, the replacement of the cylinder 14 can be completed. The cylinder 14 can be replaced according to actual needs, which is convenient for conducting telescopic performance tests with different tensile strengths.

[0042] It is worth noting that the circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0043] Compared with the related art, the performance testing device for the magnetorheological fluid damper provided by the present invention has the following beneficial effects:

[0044] The present invention provides a performance testing device for a magnetorheological fluid damper. A stable device frame can be formed by a base 1, a plurality of support columns 2 and an operating table 3, which are convenient for installing components. Two first motors 10 in an adjusting mechanism can drive the corresponding threaded rod 6 to rotate when the motor is in operation, and can drive a slide plate 7 to rise and adjust the height of a tensile testing mechanism, which is suitable for performance testing of magnetorheological fluid dampers of different heights. The output rod can drive a mounting plate 18 to reciprocate when the motor is in operation through a cylinder 14 in the tensile testing mechanism, and can perform telescopic performance testing on a plurality of magnetorheological fluid dampers that are fixed. Compared with a traditional single testing device, this test can effectively improve the testing efficiency. By cooperating with a first limiting mechanism and a second limiting mechanism, a plurality of magnetorheological fluid dampers that need to be tested can be fixed after a simple operation, which is convenient for subsequent tensile testing. A protective box 28 can be provided to cooperate with a box door, so that the components can be shielded from falling dust. At the same time, by closing the box door during testing, defective magnetorheological fluid dampers can be prevented from breaking and injuring people, which is beneficial for safety testing.

[0045] It should be noted that the device structure and drawings of the present invention mainly describe the principles of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. However, on the premise that technical personnel in this field understand the principles of the above invention, they can clearly know the details of its power mechanism, power supply system and control system.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A performance testing device for a magnetorheological fluid damper, characterized in that: include: A base, a plurality of support columns are symmetrically fixedly installed on the top of the base, a same operating table is fixedly installed on the top of the plurality of support columns, a mounting seat and two first mounting frames are fixedly installed on the top of the operating table; An adjustment mechanism, wherein the adjustment mechanism is arranged on the two first mounting frames; a first limiting mechanism, wherein the first limiting mechanism is arranged on the mounting seat; The adjusting mechanism comprises two threaded rods, a slide plate, two guide rods, four fixed blocks, two first motors and a tensile testing mechanism, the two threaded rods are rotatably mounted on the two first mounting frames respectively, the bottom ends of the two threaded rods extend out of the two first mounting frames respectively, the slide plate is threadedly sleeved on the two threaded rods, the two guide rods are slidably mounted on the slide plate, the four fixed blocks are respectively fixedly mounted on the two ends of the two guide rods, the four fixed blocks are respectively fixedly connected to the corresponding two first mounting frames, the two first motors are respectively fixedly mounted on the two first mounting frames, the output shafts of the two first motors are fixedly mounted with first couplings, the top ends of the two first couplings are respectively fixedly connected to one end of the two threaded rods, and the tensile testing mechanism is arranged on the slide plate; The tensile testing mechanism includes a second mounting frame, a rotating shaft, a mounting plate, a plurality of cylinders, a second motor, a plurality of plugs, a groove block, a mounting plate, two first electric telescopic rods, two limit blocks and a second limit mechanism. The second mounting frame is fixedly mounted on the top of the slide plate, the rotating shaft is rotatably mounted on the top of the second mounting frame, the mounting plate is fixedly mounted on the bottom end of the rotating shaft, a plurality of cylinders are fixedly mounted on the mounting plate, and the plurality of cylinders are distributed in a circular array. The second motor is fixedly mounted on the top of the second mounting frame, a second coupling is fixedly mounted on the output shaft of the second motor, the bottom end of the second coupling is fixedly connected to the top end of the rotating shaft, a plurality of plugs are respectively fixedly mounted on the top ends of the output rods of the plurality of cylinders, the groove block is sleeved on one of the plugs, the mounting plate is fixedly mounted on the bottom end of the groove block, the two first electric telescopic rods are symmetrically fixedly mounted on the top of the mounting plate, the two limit blocks are respectively fixedly mounted on the top ends of the output rods of the two first electric telescopic rods, the ends of the two limit blocks close to each other both penetrate the groove block and are clamped with the corresponding plugs, and the second limit mechanism is arranged on the mounting plate.

2. The performance testing device for a magnetorheological fluid damper according to claim 1, characterized in that: The first limiting mechanism includes a plurality of slide grooves, a plurality of second mounting blocks, a plurality of third electric telescopic rods and a plurality of second limiting plates, the slide grooves are arranged at the top of the mounting seat, a plurality of second mounting blocks are fixedly mounted on the top of the mounting seat, a plurality of third electric telescopic rods are respectively fixedly mounted on the plurality of second mounting blocks, a plurality of second limiting plates are respectively fixedly mounted on the top ends of the plurality of output rods of the third electric telescopic rods, and the bottom ends of the plurality of second limiting plates extend into the corresponding plurality of slide grooves.

3. The performance testing device for a magnetorheological fluid damper according to claim 1, characterized in that: The second limiting mechanism includes multiple first mounting blocks, multiple second electric telescopic rods and multiple first limiting plates, multiple first mounting blocks are fixedly mounted on the bottom of the mounting plate, multiple second electric telescopic rods are respectively fixedly mounted on the multiple first mounting blocks, and multiple first limiting plates are respectively fixedly mounted on the top ends of the output rods of the multiple second electric telescopic rods.

4. The performance testing device for a magnetorheological fluid damper according to claim 1, characterized in that: A protective box is fixedly installed on the top of the operating table, and a meter-controlled cylinder controller and a control switch are fixedly installed on one side of the protective box. The meter-controlled cylinder controller is compatible with the multiple cylinders, and the control switch is compatible with the first motor and the second motor.

5. The performance testing device for a magnetorheological fluid damper according to claim 1, characterized in that: The slide plate is provided with a through opening, and the through opening is adapted to the output rods of the plurality of cylinders.

6. The performance testing device for a magnetorheological fluid damper according to claim 1, characterized in that: The two first mounting frames are each provided with a through slot, and the two through slots are adapted to the two threaded rods and the slide plate.

7. The performance testing device for a magnetorheological fluid damper according to claim 1, characterized in that: Placement plates are fixedly mounted on both sides of the base, and placement baskets are placed on the two placement plates.

8. The performance testing device for a magnetorheological fluid damper according to claim 4, characterized in that: The protection box is made of transparent acrylic material. A plurality of hinges are fixedly installed on one side of the protection box. The same box door is fixedly installed on the plurality of hinges. The box door is adapted to the protection box and an observation window is provided on the box door.

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