Seven-stage adjustable rotary type electrorheological fluid brake

Abstract

The invention provides a seven-stage adjustable rotary type electrorheological fluid brake. The seven-stage adjustable rotary type electrorheological fluid brake mainly comprises a positive pole conducting wire, a negative pole conducting wire, a bearing cap, a bearing, an end closure, conductive rubber, a half round key, a rotating shaft, an insulated shell, a positive pole, a negative pole, a backflow control channel, a small turntable, a middle turntable, a large turntable, electrorheological fluid and a flat key, wherein the installation type of the small turntable, the middle turntable and the large turntable is decided by suffered braking force, when the braking force is large, the stress is not clear and the rotating speed is high, the dual-turntable and three-turntable type is adopted; when the braking force is small, the single-turntable type is adopted; the backflow control channel is used for replacing a throttling control valve, an external electric field is not applied, and the electrorheological fluid is stressed, flows between the upper part and the lower part of the insulated shell through the backflow control channel and is a hydraulic brake; when the external electric field is applied and the high shear rate is adopted, the apparent viscosity of the electrorheological fluid of the backflow control channel changes, so that the sectional area of the electrorheological fluid becomes small till being completely closed; and the electrorheological fluid realizes the effective brake on an engineering system by providing shear force and extrusion force.

Description

technical field [0001] The invention relates to a rotary brake, in particular to a rotary electrorheological fluid brake which realizes seven-level adjustment through three turntables and has a backflow control passage in the insulating shell instead of a throttling control valve, belonging to the technical field of vibration engineering . Background technique [0002] Electrorheological fluid is a suspension formed by dispersing micron-scale polarizable solid particles in a low-viscosity non-polar insulating solvent, which may include starch, silicon powder, aluminum powder, titanium dioxide, zeolite, inorganic non-metallic materials, organic Semiconductor materials, polymer semiconductor materials, stabilizers or surfactants, etc. When no electric field is applied, the properties of the electrorheological fluid are similar to those of ordinary Newtonian fluids; once an electric field is applied, the fluid properties of the electrorheological fluid will change suddenly, an...

AI Technical Summary

Problems solved by technology

In the existing technology, in order to overcome the problems of low yield shear stress of electrorheological fluid and low rheological efficiency under high shear rate, problems such as large volume, complex structure and invariable structure of the brake are often caused.

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