Three-working surface rotary type damper based on magnetorheological fluid

Abstract

The invention relates to a three-working surface rotary type damper based on magnetorheological fluid. The cylindrical surface and two end surfaces of a rotor are used as working surfaces; under the condition of not increasing the size of the rotor, the outer surface of the rotor is effectively utilized, and the working area of the rotor is increased. The three-working surface rotary type damper consists of excitation coils, the magnetorheological fluid, a back end cover, the rotor, an outer casing, magnetism isolating coils , screws, a sealing ring, bearings, a cover and a front end cover, wherein the outer casing and the two end covers form a stator of the damper, the sealing ring is arranged between the rotor and the stator, the magnetorheological fluid fills a cavity between the rotor and the stator, the magnetism isolating coils are arranged between the end covers and the outer casing, the excitation coils are wound in the end covers, and the two groups of excitation coils generate magnetic fields with opposite directions. The three-working surface rotary type damper has the advantages that when the damper is energized, the rotor of the damper does magnetic induction line cutting movement; the cylindrical surface and the two end surfaces of the rotor are used as the working surfaces, so the working surfaces of the damper rotor are obviously increased; the structure is compact, the components are simple, and the processing and assembly are easy.

Description

technical field [0001] The invention relates to a damper, in particular to a three-working surface rotary damper based on magneto-rheological fluid. Background technique [0002] Magnetorheological fluid has broad application prospects in many engineering fields such as vibration reduction and vibration suppression, mechanical transmission, precision machining and sealing due to its superior rheological properties. An important branch of technical research. [0003] At present, magnetorheological dampers can be divided into linear magnetorheological dampers and rotary magnetorheological dampers according to their working methods. The research on linear magneto-rheological damper is earlier, and the research on its structure design and mechanical model is relatively mature. However, some applications, such as rehabilitation robots, variable speed and transmission systems, etc., require the damper to provide a controllable damping torque of continuous rotation. Therefore, th...

AI Technical Summary

Problems solved by technology

Some rotary magneto-rheological dampers use the cylindrical surface of the rotor as the working surface. Although increasing the axial and radial dimensions of the rotor can increase the output torque of the damper, this structure fails to take advantage of the end surface of the rotor.

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