Magnetorheological damper performance detection platform
By introducing a temperature control system into the magnetorheological damper performance testing bench, the damper temperature is precisely controlled using a heat-conducting medium and sensors, solving the problem of inaccurate test results in existing technologies and achieving efficient testing under complex working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN UNIV OF SCI & TECH
- Filing Date
- 2025-09-02
- Publication Date
- 2026-06-12
AI Technical Summary
In the existing technology, the test results of magnetorheological dampers are obtained at room temperature, which makes it difficult to simulate the working state under complex conditions, especially under temperature changes, resulting in low accuracy and reliability of the test results.
A performance testing platform for magnetorheological dampers was designed, equipped with a temperature control system, including a thermal medium storage tank and a heat exchange jacket. The operating temperature of the damper is controlled by heating and cooling devices, heat is transferred by the thermal medium, and a temperature sensor is configured to achieve precise temperature control.
It can simulate the working state of the damper under different ambient temperatures, improve the accuracy and reliability of the test results, and ensure the precision of the test results.
Smart Images
Figure CN224354093U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of testing devices, and in particular relates to a magnetorheological damper performance testing platform. Background Technology
[0002] Magnetorheological dampers have advantages such as compact structure, sensitive response, and continuously adjustable damping force, and have shown significant value in fields such as vehicle suspension systems, vibration reduction of precision platforms, seismic damping of building structures, and vibration reduction of aerospace rotating components.
[0003] Before leaving the factory, magnetorheological dampers need to undergo rheological and tribological property testing to verify their product qualification. However, current testing is conducted at room temperature, which makes it difficult to simulate the working conditions of magnetorheological dampers under complex conditions, especially at high temperatures or under temperature variations. Therefore, the accuracy and reliability of the test results are low. Utility Model Content
[0004] The purpose of this invention is to provide a magnetorheological damper performance testing platform to solve the technical problem of low accuracy and reliability of magnetorheological damper testing results in the prior art.
[0005] To achieve the above objectives, the technical solution of the magnetorheological damper performance testing platform provided by this utility model is as follows:
[0006] A magnetorheological damper performance testing platform includes a fixing structure for fixing the damper housing and a driving structure for driving the damper's rotating shaft to rotate. It is characterized by further including a temperature control system for controlling the damper's operating temperature. The temperature control system includes a heat transfer medium storage tank and a heat exchange jacket. The heat exchange jacket has an installation cavity for installing the damper. The sidewall of the heat exchange jacket is a hollow structure capable of accommodating and allowing the heat transfer medium to flow. A pipeline for circulating the heat transfer medium is connected between the heat exchange jacket and the heat transfer medium storage tank. At least one pipeline is equipped with a circulation pump, and a heating device for heating the heat transfer medium is provided on the pipeline or in the heat transfer medium storage tank.
[0007] As a further improvement, a cooling device for cooling the heat transfer medium is installed on the pipeline or on the heat transfer medium storage tank.
[0008] As a further improvement, the cooling device is an air-cooled cooler, which is installed on the pipeline used to transport the heat transfer medium from the heat transfer medium storage tank to the heat exchange jacket.
[0009] As a further improvement, the heating device is an electric heating rod installed in a heat-conducting medium storage tank.
[0010] As a further improvement, the temperature control system is equipped with a temperature sensor, at least one of which is attached to the surface of the damper being tested during detection.
[0011] As a further improvement, the temperature control system is equipped with a temperature sensor, at least one of which is located at the outlet of the heat transfer medium in the heat exchange jacket and is used to detect the temperature of the heat transfer medium flowing out of the heat exchange jacket.
[0012] As a further improvement, the temperature control system is equipped with a temperature sensor, at least one of which is located in the heat transfer medium storage tank and is used to detect the temperature of the heat transfer medium in the heat transfer medium storage tank.
[0013] As a further improvement, the heat transfer medium is a liquid medium.
[0014] As a further improvement, water is used as the heat transfer medium.
[0015] As a further improvement, the fixed structure includes a fixed bracket with a flange for connecting the damper, the flange being detachably connected to the open end of the heat exchange jacket.
[0016] The beneficial effects are as follows: The magnetorheological damper performance testing platform provided by this utility model is an improvement on the existing technology. This platform utilizes a temperature control system to control the operation of the damper under test at different ambient temperatures, thereby obtaining the working state of the damper under complex conditions, especially at high temperatures, improving the accuracy and reliability of the magnetorheological damper testing results. Furthermore, the temperature control system uses a heat-conducting medium as a medium to transfer heat, resulting in higher control precision and further ensuring the accuracy of the testing results. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the magnetorheological damper performance testing platform of this utility model;
[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective of Embodiment 1 of the magnetorheological damper performance testing platform of this utility model.
[0019] Figure 3 This is a rear view structural schematic diagram of Embodiment 1 of the magnetorheological damper performance testing platform of this utility model.
[0020] Figure 4 This is a schematic diagram of the thermally conductive medium storage box in Embodiment 1 of the magnetorheological damper performance testing platform of this utility model.
[0021] Figure 5 This is a side view of embodiment 1 of the magnetorheological damper performance testing platform of this utility model.
[0022] Figure 6 This is a partially enlarged view from one perspective of Embodiment 1 of the magnetorheological damper performance testing platform of this utility model.
[0023] Figure 7 This is a partially enlarged view from another perspective of Embodiment 1 of the magnetorheological damper performance testing platform of this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Bench; 2. Fixed bracket; 3. Power bracket; 4. Intermediate bracket; 5. Servo motor; 6. Dynamic torque sensor; 7. Coupling; 8. Drive shaft; 9. Flange; 10. Heat transfer medium storage tank; 11. Heat exchange jacket; 12. Supply pipeline; 13. Return pipeline; 14. Circulating pump; 15. Air-cooled cooler; 16. Electric heating rod; 17. Temperature sensor; 18. Vibration sensor; 19. Temperature controller; 20. Protective cover; 21. Electrical box; 22. Sensor bracket; 23. Noise sensor; 24. Industrial control computer. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the embodiments.
[0027] Specific Embodiment 1 of the magnetorheological damper performance testing platform provided by this utility model:
[0028] See appendix Figure 1 and attached Figure 2 The magnetorheological damper performance testing platform includes a frame 1, on which a fixed support 2, a power support 3, and an intermediate support 4 are provided. A servo motor 5 is fixedly installed on the power support 3, and a dynamic torque sensor 6 is fixedly installed on the intermediate support 4. The fixed support 2 is used to fix the variable temperature magnetorheological damper under test.
[0029] The output shaft of the servo motor 5 and the input shaft of the dynamic torque sensor 6 are connected via a coupling 7. The output shaft of the dynamic torque sensor 6 is also connected to a drive shaft 8 via the coupling 7. During operation, the drive shaft 8 is connected to the rotating shaft of the damper. The servo motor 5 drives the shaft of the dynamic torque sensor 6 to rotate, which in turn drives the drive shaft 8 to rotate, ultimately rotating the rotating shaft of the damper. The dynamic torque sensor 6 can detect transient changes in torque during the damper's operation. The servo motor 5 constitutes the drive structure for driving the rotation of the damper's rotating shaft. In other embodiments, the drive structure can also be a hydraulic motor.
[0030] A flange 9 is provided on the fixed bracket 2, and one end of the damper's rotation shaft is fixedly connected to the flange 9 by bolts. The fixed bracket 2 and the flange 9 constitute a fixing structure for fixing the damper housing. In other embodiments, the fixing structure can also be a clamp structure capable of holding the damper.
[0031] The damper is mounted on the fixed bracket 2 from the side of the fixed bracket 2 away from the drive shaft 8. The connection method between the rotating shaft of the damper and the drive shaft 8 is determined according to the structure of the rotating shaft of the damper. In this embodiment, the rotating shaft of the damper and the drive shaft 8 are plugged together. The cross section of the rotating shaft is a non-circular irregular cross section. The drive shaft 8 is provided with a plug hole that matches the shape of the rotating shaft of the damper to transmit rotational power.
[0032] The magnetorheological damper performance testing bench also includes a temperature control system to simulate different operating environments, combined with... Figure 3 The temperature control system mainly includes a heat transfer medium storage tank 10 and a heat exchange jacket 11. A pipeline connects the heat transfer medium storage tank 10 and the heat exchange jacket 11. The heat transfer medium circulates between the heat transfer medium storage tank 10 and the heat exchange jacket 11. When in use, the heat exchange jacket 11 can be fitted over the damper to control the temperature of the damper.
[0033] The heat exchange jacket 11 has a mounting cavity for installing a damper. One axial end of the mounting cavity is open for installing the damper, and the other axial end is closed to increase the contact area with the damper and improve heat exchange efficiency. The sidewall of the heat exchange jacket 11 is a hollow structure capable of accommodating and allowing the flow of the heat transfer medium. This sidewall includes the circumferential wall and the axial end wall of the heat exchange jacket 11. A heat transfer medium inlet and a heat transfer medium outlet, communicating with the hollow inner cavity, are provided on the outer surface of the heat exchange jacket 11. The heat transfer medium inlet and outlet are respectively connected to pipelines.
[0034] Two pipelines connect the heat transfer medium storage tank 10 and the heat exchange jacket 11. One pipeline is a supply pipeline 12 for the heat transfer medium to flow from the heat transfer medium storage tank 10 to the heat exchange jacket 11, and the other pipeline is a return pipeline 13 for the heat transfer medium to flow from the heat exchange jacket 11 to the heat transfer medium storage tank 10. One end of the supply pipeline 12 is connected to the heat transfer medium inlet on the heat exchange jacket 11, and the other end is connected to the lower part of one side of the heat transfer medium storage tank 10. A circulation pump 14 and a cooling device are connected in series on the supply pipeline 12. One end of the return pipeline 13 is connected to the heat transfer medium outlet on the heat exchange jacket 11, and the other end is connected to the top of the heat transfer medium storage tank 10. The pipelines are specifically made of silicone flexible tubing for easy installation and use.
[0035] In this embodiment, the heat transfer medium is a liquid medium, specifically water. Water has a large specific heat capacity, which enables more efficient heat exchange. The circulating pump 14 is specifically a magnetically driven brushless water pump, which can reliably pump water from the heat transfer medium storage tank 10 into the heat exchange jacket 11.
[0036] In this embodiment, the cooling device is an air-cooled cooler 15. The air-cooled cooler 15 has a channel for the flow of the heat transfer medium. The sidewalls of this channel have good thermal conductivity. The air-cooled cooler 15 also has a cooling fan, which is used to accelerate the cooling of the heat transfer medium in the channel. When the heat transfer medium needs to be heated, the cooling fan of the air-cooled cooler 15 can be turned off. The heat transfer medium loses less heat when flowing through the air-cooled cooler 15, making it easy to heat up. When the heat transfer medium needs to be cooled, the air-cooled cooler 15 can be turned on. The heat transfer medium loses more heat when flowing through the air-cooled cooler 15, allowing for rapid cooling.
[0037] See appendix Figure 4 The heat transfer medium storage box 10 is equipped with a heating device. In this embodiment, the heating device is specifically an electric heating rod 16, which has high heating efficiency and is easy to use.
[0038] To control the temperature more accurately and conveniently, temperature sensors 17 are required for the temperature control system. In this embodiment, three temperature sensors 17 are arranged, located in the heat transfer medium storage tank 10, at the heat transfer medium outlet of the heat exchange jacket 11, and attached to the outer surface of the damper during use. The temperature sensor 17 in the heat transfer medium storage tank 10 is installed in the upper turbulent region inside the tank and can monitor the water temperature in the heat transfer medium storage tank 10 in real time and accurately. The temperature sensor 17 at the heat transfer medium outlet of the heat exchange jacket 11 can detect the water temperature after heat exchange, which can represent the simulated ambient temperature of the damper. The temperature sensor 17 on the surface of the damper can directly measure the temperature of the damper.
[0039] The magnetorheological damper performance testing bench also includes a temperature controller 19, see Appendix Figure 5 and in conjunction with the appendix Figure 7 The temperature controller 19 is electrically connected to all three temperature sensors 17, as well as to the electric heating rod 16 and the air-cooled cooler 15. The temperature controller 19 integrates the values obtained from the three temperature sensors 17 to control the opening and closing of the electric heating rod 16 and the air-cooled cooler 15, thereby accurately controlling the water temperature. During use, when the temperature is lower than the set value, the temperature controller 19 controls the air-cooled cooler 15 to close while the electric heating rod 16 opens to heat the circulating water; when the temperature is higher than the set value, the temperature controller 19 controls the air-cooled cooler 15 to open to cool the circulating water, and at this time, it can simultaneously control the electric heating rod 16 to close.
[0040] During the flow of circulating water from the heat transfer medium storage tank 10 to the heat exchange jacket 11, heat loss is inevitable. Therefore, the water temperature in the heat transfer medium storage tank 10 must be slightly higher than the set value. After the circulating water releases heat at the heat exchange jacket 11, its temperature drops, and the detected temperature value is slightly lower than the set value. The temperature sensor 17 located on the surface of the damper directly measures the temperature of the damper, and its temperature value should be equal to or close to the set value. In actual use, the difference between the temperature measured by each temperature sensor 17 and the set value can be obtained through multiple tests. Using three temperature sensors 17 to monitor the water temperature can achieve a faster response and improve testing efficiency.
[0041] The heat exchanger jacket 11 is detachably connected to the flange 9 of the fixed bracket 2. Before testing, the heat exchanger jacket 11 is removed, the damper under test is installed, and then the heat exchanger jacket 11 is reinstalled. After testing, the heat exchanger jacket 11 is removed first, and then the damper under test is removed. In this embodiment, the heat exchanger jacket 11 and the flange 9 are also connected by bolts. In other embodiments, the heat exchanger jacket 11 and the flange 9 can also be connected by snap-fit or magnetic attraction.
[0042] The magnetorheological damper performance testing platform also includes a protective cover 20, which is fixed on the frame 1 and encloses the servo motor 5, dynamic torque sensor 6, and other structures inside. The heat exchange jacket 11 in the temperature control system is located inside the protective cover 20, while the heat transfer medium storage tank 10 is located outside the protective cover 20.
[0043] A vibration sensor 18 is fixedly installed on the inner side of the protective cover 20 to monitor the vibration of the damper under test in real time during the testing process. See also the appendix. Figure 6 and in conjunction with the appendix Figure 7 Two vibration sensors 18 are also installed near the damper being tested. These two vibration sensors 18 are respectively installed on the surface of the damper being tested and on the surface of the fixed bracket 2.
[0044] An electrical box 21 is provided on one side of the protective cover 20 to supply power to various electrical components.
[0045] The test stand 1 is also equipped with a sensor bracket 22, which is located inside the protective cover 20 and is equipped with a noise sensor 23, so that the sensor is directly facing the damper under test, and is used to monitor the noise generated by the damper during the test.
[0046] In addition, an industrial control computer 24 is installed outside the protective cover 20 to set parameters such as the number of tests, temperature, and motor speed. These parameters are set through software in the industrial control computer 24. The signals output by the dynamic torque sensor 6, noise sensor 23, and vibration sensor 18 are all transmitted to the industrial control computer 24. The industrial control computer 24 analyzes, processes, and stores the collected data for subsequent evaluation of the performance of the magnetorheological damper.
[0047] The magnetorheological damper performance testing bench of this invention can simulate an ambient temperature of 20℃-90℃. Moreover, whether the ambient temperature is constant or fluctuating, it can be simulated by the magnetorheological damper performance testing bench, and the temperature control is accurate and efficient.
[0048] Specific Embodiment 2 of the magnetorheological damper performance testing platform provided by this utility model:
[0049] This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the axial ends of the mounting cavity of the heat exchanger are open. One end of the heat exchanger is welded and fixed to the flange. The damper to be tested can be inserted into the heat exchanger from the other end of the heat exchanger and installed on the flange.
[0050] Specific embodiment 3 of the magnetorheological damper performance testing platform provided by this utility model:
[0051] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the heat transfer medium in this embodiment is an oil with a boiling point higher than that of water, thereby obtaining a wider temperature regulation range.
[0052] Specific embodiment 4 of the magnetorheological damper performance testing platform provided by this utility model:
[0053] This embodiment is based on Embodiment 1, but differs from Embodiment 1 in that the heat transfer medium in this embodiment is air and the circulation pump is an air pump.
[0054] Specific embodiment 5 of the magnetorheological damper performance testing platform provided by this utility model:
[0055] This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the temperature control system in this embodiment is equipped with only one temperature sensor, which is attached to the surface of the damper during use.
[0056] Specific embodiment 6 of the magnetorheological damper performance testing platform provided by this utility model:
[0057] This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the temperature control system in this embodiment is equipped with two temperature sensors. One temperature sensor is attached to the surface of the damper during use, and the other temperature sensor is set in the heat transfer medium storage box.
[0058] Specific embodiment 7 of the magnetorheological damper performance testing platform provided by this utility model:
[0059] This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that the heating device is connected in series on the supply pipeline. The heating device has a heating channel through which the heat-conducting medium flows. A heating resistance wire is coiled around the outside of the heating channel. When the heat-conducting medium flows through the heating channel, it will be heated and its temperature will rise.
[0060] Specific embodiment 8 of the magnetorheological damper performance testing platform provided by this utility model:
[0061] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the cooling device in this embodiment is a semiconductor cooling chip installed on the side wall of the heat transfer medium storage box. The semiconductor cooling chip can dissipate the heat of the heat transfer medium in the heat transfer medium storage box, thereby reducing the temperature of the heat transfer medium.
[0062] Specific embodiment 9 of the magnetorheological damper performance testing platform provided by this utility model:
[0063] This embodiment is based on embodiment 1. The difference between this embodiment and embodiment 1 is that no cooling device is set in this embodiment. During the detection process, the heat transfer medium maintains a constant temperature.
[0064] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A magnetorheological damper performance testing platform, comprising a fixing structure for fixing the damper housing and a driving structure for driving the damper's rotating shaft to rotate, characterized in that, It also includes a temperature control system for controlling the operating temperature of the damper. The temperature control system includes a heat transfer medium storage tank and a heat exchange jacket. The heat exchange jacket has an installation cavity for the damper to be installed. The side wall of the heat exchange jacket is a hollow structure that can accommodate the heat transfer medium and allow the heat transfer medium to flow. A pipeline for circulating the heat transfer medium is provided between the heat exchange jacket and the heat transfer medium storage tank. At least one pipeline is equipped with a circulation pump. A heating device for heating the heat transfer medium is provided on the pipeline or in the heat transfer medium storage tank.
2. The magnetorheological damper performance testing platform according to claim 1, characterized in that, Cooling devices for cooling the heat transfer medium are installed on the pipeline or on the heat transfer medium storage tank.
3. The magnetorheological damper performance testing platform according to claim 2, characterized in that, The cooling device is an air-cooled cooler, which is installed on the pipeline used to transport the heat transfer medium from the heat transfer medium storage tank to the heat exchange jacket.
4. The magnetorheological damper performance testing platform according to any one of claims 1-3, characterized in that, The heating device is an electric heating rod installed in a heat-conducting medium storage tank.
5. The magnetorheological damper performance testing platform according to any one of claims 1-3, characterized in that, The temperature control system is equipped with temperature sensors, at least one of which is attached to the surface of the damper being tested during detection.
6. The magnetorheological damper performance testing platform according to any one of claims 1-3, characterized in that, The temperature control system is equipped with temperature sensors, at least one of which is located at the outlet of the heat transfer medium in the heat exchange jacket and is used to detect the temperature of the heat transfer medium flowing out of the heat exchange jacket.
7. The magnetorheological damper performance testing platform according to any one of claims 1-3, characterized in that, The temperature control system is equipped with a temperature sensor, at least one of which is located in the heat transfer medium storage tank and is used to detect the temperature of the heat transfer medium in the heat transfer medium storage tank.
8. The magnetorheological damper performance testing platform according to any one of claims 1-3, characterized in that, The heat transfer medium is a liquid medium.
9. The magnetorheological damper performance testing platform according to claim 8, characterized in that, The heat transfer medium is water.
10. The magnetorheological damper performance testing platform according to any one of claims 1-3, characterized in that, The fixed structure includes a fixed bracket, on which a flange for connecting the damper is provided. The flange is detachably connected to the open end of the heat exchange jacket.