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Magnetorheological fluid brake

A magneto-rheological fluid and brake technology, applied in the direction of liquid resistance brakes, brake types, brake actuators, etc., can solve the problem of high calorific value of magneto-rheological fluid brakes, adverse effects on braking stability, and large viscous resistance, etc. problems, to achieve fast braking response, ensure braking stability, and easy regulation

Active Publication Date: 2019-03-22
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this setting method has the problem of large viscous resistance at zero field, which leads to huge energy loss during the continuous driving of the car. adverse effect on stability

Method used

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  • Magnetorheological fluid brake
  • Magnetorheological fluid brake
  • Magnetorheological fluid brake

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The shell has a hollow structure, and the left end cover 104 and the right end cover 105 are arranged in the shell, forming a liquid cavity between them, and the liquid cavity is filled with magnetorheological fluid, and the left brake disc 402 and the right brake disc 403 are concentrically arranged in the liquid cavity Inside, each brake vane 401 is arranged between the left brake disc 402 and the right brake disc 403, and the left brake disc 402 and the right brake disc 403 are fixedly connected to the rotating shaft 406, leaving a gap with the side wall of the liquid chamber , there is a brake disc sleeve sleeved on the transmission shaft 406 between the two to form the actuator 400; the rotating shaft 406 is set through the casing and is rotatably connected to the casing through a sealed bearing;

[0055] Both the driving mechanism 200 and the transmission mechanism 300 are located in the hollow structure, the output end of the driving mechanism is connected to the ...

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Abstract

The invention discloses a magnetorheological fluid brake, and relates to the technical field of magnetorheological fluid brakes. A braking function is realized by retractable brake blades disposed between a left brake disc and a right brake disc, during braking, after the brake blades extend out from brake blade temporary storage slots, the gap between the left brake disc and the right brake discis small, and a magnetic field generated by an electromagnetic coil quickly realizes the braking function. The left brake disc and the right brake disc and a left end cover and a right end cover are provided with large gaps, the viscous resistance in the zero field is small, the heat productivity of the magnetorheological fluid brake during the running of a vehicle is low, the energy loss is reduced, and the braking stability of the magnetorheological fluid brake is further effectively ensured; separating from a hydraulic system, the instantaneous attraction of an electromagnet and the restoring force of a tension spring are counted on to regulate the pop-up and contraction of the brake blades, the decoupling of the magnetorheological fluid brake and a brake pedal is realized, and the realization of brake-by-wire on a new energy vehicle is facilitated.

Description

technical field [0001] The invention relates to the technical field of magnetorheological fluid brakes, in particular to a magnetorheological fluid brake for vehicle braking. Background technique [0002] Magneto-rheological fluid is a new type of intelligent material. When an external magnetic field is applied, a rheological effect occurs, and the initial Newtonian fluid properties instantly show solid-like properties. The magnetorheological process has the advantages of rapid response, reversible effect, low energy consumption, and strong adaptability. Using the precisely adjustable shear stress of magnetorheological fluid, magnetorheological fluid is applied to the automobile braking system, and the braking torque of the brake is adjusted by controlling the current of the magnetic field circuit, which is the magnetorheological fluid brake. [0003] Existing magneto-rheological fluid brakes generally adopt the method of setting the gap between the brake disc rotor and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D57/00F16D65/18F16D121/20F16D125/48
CPCF16D57/002F16D65/18F16D2121/20F16D2125/48
Inventor 王道明方时瑞訾斌钱钧陈无畏邵文彬罗洋均
Owner HEFEI UNIV OF TECH
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