Radial extrusion type magnetorheological fluid brake

Abstract

The invention discloses a radial extrusion type magnetorheological fluid brake, and belongs to the field of hydraulic resistance brakes. On the basis of an existing device, a right guiding magnetic brake outer shell, a pressurization device, a coil fixing ring, pressurization channels, a right magnet exciting coil and a separation magnet ring are added to the brake, wherein the right guiding magnetic brake outer shell is arranged on the right of a left guiding magnetic brake outer shell, a gap is reserved between the right guiding magnetic brake outer shell and the left guiding magnetic brake outer shell, and the pressurization device is arranged on the outer circumference of the right guiding magnetic brake outer shell; a magnetorheological fluid gap is formed between a driving shaft and the right guiding magnetic brake outer shell, the other magnetorheological fluid gap is formed between the driving shaft and the left guiding magnetic brake outer shell, and a left magnet exciting coil, the right magnet exciting coil and the separation magnet ring are arranged in the gap formed between the right guiding magnetic brake outer shell and the left guiding magnetic brake outer shell; and the left magnet exciting coil and the right magnet exciting coil are fixed through the coil fixing ring, the pressurization channels are respectively arranged on the right guiding magnetic brake outer shell, the coil fixing ring and the separation magnet ring. The radial extrusion type magnetorheological fluid brake is simple in assembling and compact in structure, provides large braking torque, meanwhile enhances device reliability, and reduces energy consumption.

Description

technical field [0001] The invention relates to a magnetorheological fluid brake, in particular to a radial extrusion magnetorheological fluid brake, which belongs to the field of hydraulic resistance brakes. Background technique [0002] Magnetorheological fluid is a new type of magnetic functional material, which is composed of base fluid, magnetic particles and dispersant. When there is no external magnetic field, it behaves as a Newtonian fluid with good performance; under the action of an external magnetic field, it exhibits mechanical properties similar to solids, and this viscosity change is continuous and reversible, that is, once the magnetic field is removed, it becomes fluid again liquid. Due to the continuous, reversible, rapid and easy-to-control characteristics of magnetorheological effects, magnetorheological fluids have been more and more widely used in machinery and other related fields. [0003] The magnetorheological fluid brake is an important branch of...

AI Technical Summary

Problems solved by technology

In the above two methods, increasing the number of brake discs in the former will increase the processing difficulty of the brake, and the structure is not compact enough; in the process of increasing the excitation current, when the magneto-rheological fluid reaches magnetic saturation, the brake The torque will not increase, the effect is not obvious, and the durability is not enough, and the energy consumption is large

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