A rotary magnetorheological damper based on torsional working mode

Abstract

The utility model relates to magnetorheological damper technical field more specifically, and more specifically, it relates to a kind of rotary magnetorheological damper based on torsion mode of operation, including rotationally connected inner rotating component and outer rotating component, and coaxial reverse mechanism is connected between inner rotating component and outer rotating component;The inner rotating component includes fixedly connected first rotating disc and second rotating disc;The outer rotating component includes outer cylinder and coil, and first rotating disc and second rotating disc are all arranged in outer cylinder, and coil is between first rotating disc and second rotating disc and is fixedly connected with outer cylinder;Gap exists between coil and first rotating disc, second rotating disc, and the gap is filled with magnetorheological fluid.The utility model compares with the rotary magnetorheological damper of same type work under shear model, and the damper works in torsion mode, can output greater torque, can realize the gain effect of low energy consumption large torque.

Description

Technical Field

[0001] This utility model relates to the field of magnetorheological damper technology, and more specifically, to a rotating magnetorheological damper based on a torsional working mode. Background Technology

[0002] With the continuous development and improvement of the manufacturing industry, more and more instruments and equipment have higher requirements for vibration reduction performance. Magnetorheological fluids, with their unique magnetorheological effects, have stood out in the field of intelligent vibration reduction and have received widespread attention and research. Among them, magnetorheological fluid damping vibration dampers made based on the properties of magnetorheological fluids are a type of intelligent semi-active vibration damper with simple structure, easy control, low cost, adjustable damping, and low energy consumption, and are one of the most promising intelligent vibration reduction devices. As the application fields of magnetorheological dampers continue to expand, in some application areas, linear magnetorheological dampers are not suitable for systems where the machinery is in rotational motion due to limitations in installation space and force output form, such as wind turbines, automobile engines, seat suspensions, and machine tools. Therefore, rotary magnetorheological dampers, with their advantages of compact structure, wide adjustable range, and relatively simple process, have been widely studied. However, due to the limitations of the maximum magnetostrictive saturation shear yield strength and shear working mode of magnetorheological fluids, the torque of existing traditional rotary magnetorheological dampers is relatively small and cannot meet the actual engineering requirements of high torque. Therefore, it is necessary to propose a high-torque rotary magnetorheological damper. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a rotating magnetorheological damper based on torsional operating mode is provided that can be used under high torque conditions.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A rotating magnetorheological damper based on a torsional working mode includes an inner rotating component and an outer rotating component that are rotatably connected, and a coaxial reversing mechanism is connected between the inner rotating component and the outer rotating component. The inner rotating assembly includes a first rotating disk and a second rotating disk that are fixedly connected; the outer rotating assembly includes an outer cylinder and a coil, the first rotating disk and the second rotating disk are both disposed inside the outer cylinder, and the coil is located between the first rotating disk and the second rotating disk and is fixedly connected to the outer cylinder; There are gaps between the coil and the first rotating disk and the second rotating disk, and the gaps are filled with magnetorheological fluid.

[0005] Preferably, the coaxial reversing mechanism includes a connecting frame, a first bevel gear, a second bevel gear, and a transmission bevel gear. The outer cylinder is coaxially fixed to a sleeve, and the second rotating disk is coaxially fixed to a rotating rod. The rotating rod passes through the sleeve and is rotatably connected to the sleeve. The sleeve and / or the rotating rod are rotatably connected to the connecting frame. The first bevel gear is fixedly connected to the sleeve, the second bevel gear is fixedly connected to the rotating rod, and the transmission bevel gear is rotatably mounted on the connecting frame and meshes with the first bevel gear and the second bevel gear respectively.

[0006] Preferably, the rotating rod passes through the second rotating disk, and the first rotating disk is fixedly connected to the rotating rod by a sealing bolt.

[0007] Preferably, the outer cylinder sidewall is provided with a cable outlet.

[0008] Preferably, both the first rotating disk and the second rotating disk are sealed to the outer cylinder.

[0009] The advantages of this utility model compared with the prior art are as follows: 1. This invention innovatively transforms the force mode of magnetorheological fluid from "shear action" to "torsion + shear action." By controlling the rheological properties of the magnetorheological fluid under torsion through a magnetic field, the generation of damping torque directly depends on the torsional mechanical response of the magnetorheological fluid. This innovation breaks the traditional shear mode and fundamentally optimizes the utilization efficiency of the magnetorheological effect.

[0010] 2. In this invention, during the torsion process, the coil rotates in opposite directions with the upper and lower rotating disks, and the two ends of the magnetic particle chain are subjected to a reverse rotational torque, forming a magnetorheological damper in torsion mode. On the one hand, compared with similar rotating magnetorheological dampers operating in shear mode, this damper, operating in torsion mode, can output a larger torque, achieving a gain effect of low energy consumption and high torque. On the other hand, since the torsion mode does not require increasing the magnetic field strength to compensate for the insufficient torque in shear mode, its energy consumption can be reduced when achieving the same torque output, ultimately achieving a gain effect of "low energy consumption and high torque". Attached Figure Description

[0011] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1-First rotating disk; 2-Second rotating disk; 3-Outer cylinder; 4-Coil; 5-Magnetorheological fluid; 6-Connecting frame; 7-First bevel gear; 8-Second bevel gear; 9-Transmission bevel gear; 10-Rotating rod; 11-Sealing bolt; 12-Outlet; 13-Sleeve. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example: like Figure 1 As shown, a rotating magnetorheological damper based on a torsional working mode includes an inner rotating component and an outer rotating component that are rotatably connected. A coaxial reversing mechanism is connected between the inner rotating component and the outer rotating component, and the coaxial reversing mechanism drives the inner rotating component and the outer rotating component to rotate in opposite directions.

[0016] The inner rotating assembly includes a first rotating disk 1 and a second rotating disk 2 fixedly connected. The outer rotating assembly includes an outer cylinder 3 and a coil 4. Both the first rotating disk 1 and the second rotating disk 2 are disposed inside the outer cylinder 3. The coil 4 is located between the first rotating disk 1 and the second rotating disk 2 and is fixedly connected to the outer cylinder 3. A wire outlet 12 is provided on the side wall of the outer cylinder 3 for supplying power to the coil 4. Specifically, since the outer cylinder 3 is a rotating component, it can be powered via brushes and slip rings. Gaps exist between the coil 4 and both the first rotating disk 1 and the second rotating disk 2, and these gaps are filled with magnetorheological fluid 5. When the inner and outer rotating assemblies rotate in opposite directions, the first rotating disk 1 and the second rotating disk 2 rotate in opposite directions relative to the coil 4. The working area of ​​the magnetorheological fluid is between the coil 4 and the first rotating disk 1 and the second rotating disk 2. The direction of the magnetic particles forming a chain under the magnetic field is perpendicular to the direction of the plate rotation. The coil rotates in the opposite direction to the first rotating disk 1 and the second rotating disk 2. The two ends of the magnetic particle chain are subjected to the opposite rotation torque, forming a torsional magnetorheological damper.

[0017] Preferably, the coaxial reversing mechanism includes a connecting frame 6, a first bevel gear 7, a second bevel gear 8, and a transmission bevel gear 9. The connecting frame 6 supports the entire mechanism. A sleeve 13 is coaxially fixed to the lower end of the outer cylinder 3, and the sleeve 13 is rotatably mounted on the connecting frame 6. A rotating rod 10 is coaxially fixed to the second rotating disk 2. The rotating rod 10 passes through the sleeve 13 and is rotatably connected to the sleeve 13, allowing the second rotating disk 2 to rotate relative to the outer cylinder 3. Preferably, the lower end of the rotating rod 10 is rotatably connected to the connecting frame 6.

[0018] The first bevel gear 7 is fixedly connected to the sleeve 13, the second bevel gear 8 is fixedly connected to the rotating rod 10, and the transmission bevel gear 9 is rotatably mounted on the connecting frame 6 and meshes with the first bevel gear 7 and the second bevel gear 8 respectively.

[0019] When the first bevel gear 7 or the second bevel gear 8 is driven to rotate, under the action of the transmission bevel gear 9, the corresponding second bevel gear 8 or the first bevel gear 7 rotates in the opposite direction, so that the second rotating disk 2 and the outer cylinder 3 rotate in opposite directions on the same axis.

[0020] Preferably, the second bevel gear 8 is a driving bevel gear.

[0021] To facilitate the connection between the first rotating disk 1 and the second rotating disk 2, the upper end of the rotating rod 10 passes through the second rotating disk 2, and the first rotating disk 1 is fixedly connected to the upper end of the rotating rod 10 by a sealing bolt 11.

[0022] To prevent leakage of the magnetorheological fluid, both the first rotating disk 1 and the second rotating disk 2 are sealed to the outer cylinder 3. Preferably, a sealing ring (as per existing structures, not shown in the figure) can be provided between the outer side wall of the first rotating disk 1 and the second rotating disk 2 and the inner wall of the outer cylinder 3.

[0023] Working principle: When the damper is working, the rotation of the second bevel gear 8 drives the coaxial first rotating disk 1 and second rotating disk 2 to rotate in the same direction, simultaneously driving the transmission bevel gear 9 to move. The movement of the transmission bevel gear 9 causes the first bevel gear 7 to rotate in the opposite direction to the movement of the second bevel gear 8. The coil 4 is fixedly connected to the outer cylinder 3, so the coil 4 rotates in the opposite direction to the first rotating disk 1 and the second rotating disk 2. Magnetorheological fluid fills the gap between the coil 4 and the rotating disks. After energization, the magnetic particles in the magnetorheological fluid form chains perpendicular to the rotation direction of the pole plates, and both ends of the magnetic particle chains are simultaneously subjected to opposite rotation, resulting in torsional deformation. Compared with the traditional shearing mode, torsional stress is generated during the torsion process, which leads to deformation of the magnetic particle chains and thus consumes more energy. In the shearing process, since the magnetic particle chains only slide along a plane, they are relatively easy to slide, so the energy consumption is relatively small. Therefore, the damper in the torsion mode can output a larger torque, achieving a gain effect of low energy consumption and high torque.

[0024] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A rotating magnetorheological damper based on a torsional operating mode, characterized in that: It includes an inner rotating component and an outer rotating component that are rotatably connected, and a coaxial reversing mechanism is connected between the inner rotating component and the outer rotating component; The inner rotating assembly includes a first rotating disk (1) and a second rotating disk (2) fixedly connected; the outer rotating assembly includes an outer cylinder (3) and a coil (4), the first rotating disk (1) and the second rotating disk (2) are both disposed inside the outer cylinder (3), and the coil (4) is located between the first rotating disk (1) and the second rotating disk (2) and is fixedly connected to the outer cylinder (3); There are gaps between the coil (4) and the first rotating disk (1) and the second rotating disk (2), and the gaps are filled with magnetorheological fluid (5).

2. The rotating magnetorheological damper based on torsional operating mode according to claim 1, characterized in that: The coaxial reversing mechanism includes a connecting frame (6), a first bevel gear (7), a second bevel gear (8), and a transmission bevel gear (9). The outer cylinder (3) is coaxially fixed to a sleeve (13). The second rotating disk (2) is coaxially fixed to a rotating rod (10). The rotating rod (10) passes through the sleeve (13) and is rotatably connected to the sleeve (13). The sleeve (13) and / or the rotating rod (10) are rotatably connected to the connecting frame (6). The first bevel gear (7) is fixedly connected to the sleeve (13), the second bevel gear (8) is fixedly connected to the rotating rod (10), and the transmission bevel gear (9) is rotatably mounted on the connecting frame (6) and meshes with the first bevel gear (7) and the second bevel gear (8) respectively.

3. A rotating magnetorheological damper based on torsional operating mode according to claim 2, characterized in that: The rotating rod (10) passes through the second rotating disk (2), and the first rotating disk (1) is fixedly connected to the rotating rod (10) by a sealing bolt (11).

4. A rotating magnetorheological damper based on torsional operating mode according to claim 1, characterized in that: The outer cylinder (3) has a cable outlet (12) on its side wall.

5. A rotating magnetorheological damper based on torsional operating mode according to claim 1, characterized in that: The first rotating disk (1) and the second rotating disk (2) are both sealed to the outer cylinder (3).

Images