Circulating type magnetorheological fluid braking system

Abstract

The invention discloses a circulating type magnetorheological fluid braking system. The circulating type magnetorheological fluid braking system comprises a magnetorheological fluid box (1), an oil pump (2), a cooling device (16) and a magnetorheological fluid brake with a U-shaped hoop type magnet exciting coil (12); one of two concentrating flux plates (13) at the two sides of the U-shaped hoop type magnet exciting coil is fixed on the left head face of a bearing pedestal (4) while the other is fixed on the right head face of a connecting plate (14); the magnetorheological fluid box is communicated with a liquid inlet (3) in the magnetorheological fluid brake through the oil pump; a liquid outlet (15) in the magnetorheological fluid brake is communicated with the magnetorheological fluid box through the cooling device. The magnet exciting coil in the circulating type magnetorheological fluid braking system is convenient to disassemble and assemble; the circulating type magnetorheological fluid braking system is convenient to realize the multi-stage regulation of braking force, convenient for the free flow of the magnetorheological fluid, good in radiating effect and suitable for the large-slip frequency power braking field, and the circulating flow of magnetorheological fluid working medium is realized.

Description

technical field [0001] The invention relates to a magnetorheological fluid braking system, in particular to a circulating magnetorheological fluid braking system, which is suitable for the braking fields of machinery and vehicles. Background technique [0002] Magnetorheological Fluids (MRF) is a kind of intelligent material, which is mainly composed of soft magnetic particles, base carrier fluid and surface additives. The soft magnetic particles coated with surface additives are in a suspended state in the base carrier liquid. This suspension is in a free-flowing state (liquid state) when there is no external magnetic field, but under the external magnetic field, the "solidification" phenomenon occurs. It is a viscoplastic fluid (semi-solid) with a certain shear force. Using this unique rheological characteristic, many new devices can be developed. The magnetorheological fluid braking system is a new type of braking technology developed with magnetorheological fluid as the...

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Problems solved by technology

[0003] At present, there are many magnetorheological fluid braking systems at home and abroad, but in the existing magnetorheological fluid braking systems, the working medium of the magnetorheological fluid is sealed inside the device, so that the magnetorheological fluid It is very difficult for the generated heat to dissipate outwards, which results in less braking power; in addition, most of the excitation coils of the existing magneto-rheological fluid braking systems are integral cylindrical structures, and the excitation coils are placed inside the device. Complicated

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