Multiple-disc type magnetorheological brake

Abstract

The invention relates to a multiple-disc type magnetorheological brake which mainly comprises a transmission shaft, a wheel hub, a drive friction plate group, a driven friction plate group, inner and outer magnetic isolation rings, an exciting coil with a U-shaped iron core, magnetic-conducting side plates and a magnetic isolation casing. A sealing ring is used for sealing magnetorheological fluid between the drive friction plate group and the driven friction plate group; the drive friction plate group and the driven friction plate group are respectively sleeved on the magnetic isolation rings and the wheel hub through splines; the drive friction plate group is separated from the driven friction plate group by the inner magnetic isolation ring and the outer magnetic isolation ring; the exciting coil with the U-shaped iron core is directly spliced in iron core jacks of the magnetic conducting side plates; and the braking torque can be changed through changing the current intensity of the coil. When the braking torque is not enough, the quantity of friction plates can be increased or the quantity of the exciting coil with the U-shaped iron core can be increased to adapt to the big torque braking. The multiple-disc type magnetorheological brake has the advantages that the structure is compact, the braking torque is big, the assembly and the disassembly are convenient, the coil is easily used for radiating the heat, and the number of turns wounded by the coil is more.

Description

technical field [0001] The invention relates to a magneto-rheological brake, in particular to a multi-disk magnetorheological brake suitable for the field of mechanical and vehicle braking. Background technique [0002] The magnetorheological fluid is composed of a base fluid, a magnetic material suspended in the base fluid and a stabilizer. When there is no external magnetic field, it is in a free flowing state; under the action of an external magnetic field, the rheological properties change sharply and become semi-solid, and the change is reversible, continuous, and instantaneous. Because magnetorheological fluid has such superiority It has been more and more widely used in related fields such as machinery. As an application branch of magnetorheological fluid, magnetorheological brakes have the advantages of small size, low energy consumption, large braking torque, and fast dynamic response, which can avoid the insufficient braking torque, low safety and reliability, and...

AI Technical Summary

Problems solved by technology

However, the magnetorheological brakes above all have the problem that once the excitation coil burns out, the magnetorheological brake can only be disassembled to replace the excitation device. Its braking method is single

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