Planetary gear type differential mechanism based on magnetorheological fluid

Abstract

The invention relates to a planetary gear type differential mechanism based on a magnetorheological fluid. The planetary gear type differential mechanism is composed of a differential mechanism group and a magnetorheological device group, wherein the differential mechanism group comprises a differential mechanism left shell, a differential mechanism right shell, a half axle gear, planetary gears and main speed reducer driven gears; the differential mechanism left shell is fixed with the main speed reducer driven gears and a magnetorheological device shell in the magnetorheological device group, and the half axle gear and the planetary gears meshed with the half axle gear are sleeved with sleeves in the differential mechanism left shell and the differential mechanism right shell; the magnetorheological device group comprises magnetorheological device shells, magnetorheological device grids, coils, electric brushes and electric brush boxes; and the magnetorheological device grids are arranged in the magnetorheological device shells, the coils are wound outside the magnetorheological device shells, lead wires of the coils are connected with the electric brushes, the electric brushes and the electric brush boxes are connected and electrified, and the currents are transmitted to the lead wires through the electric brush boxes through the electric brushes. The defects that a friction type differential mechanism lock is high in loss and an adhesion type differential mechanism lock greatly depends on the environment temperature condition are overcome, the magnitude of the internal friction torque of the differential mechanism can be controlled according to actual needs, and the use working condition of the differential mechanism is widened.

Description

technical field [0001] The invention belongs to the technical field of differentials in vehicle transmission systems, and in particular relates to a magneto-rheological fluid-based planetary gear differential, which is suitable for the mechanical structures of automobiles, tractors and other two-wheel or multiple-wheels that require differential self-locking . Background technique [0002] When the car is cornering or driving on roads with different ups and downs on the left and right sides, the left and right driving wheels of the car travel different distances. Rolling reduces tire wear, improves transmission efficiency and component life. [0003] Ordinary planetary gear differentials make differentials through the torque difference between the left and right wheels. In some special cases, the differential needs to be self-locking to get out of trouble. The self-locking principle usually adopted is: by locking the side gears, the side gears cannot rotate relative to the...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a magneto-rheological fluid-based planetary gear differential capable of differential speed and differential self-locking, so as to solve the problem of excessive dependence on the external environment temperature and high wear of the differential in the prior art. And the problem of not being able to adjust the differential torque

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