Hydraulic limited slip differential

Abstract

The invention discloses a hydraulic limited slip differential, which comprises a housing, a planetary gear train and a hydraulic limited slip mechanism, wherein the hydraulic limited slip mechanism comprises a limited slip friction pair, a hydraulic device and an oil conveying disc, and the hydraulic limited slip mechanism is arranged at one side or two sides of the planetary gear train; the planetary gear train, the limited slip friction pair and the hydraulic device are arranged in the housing; the tooth back of the half axle gear of the planetary gear train is separated from the limited slip friction pair by the housing, and the driving friction plate of the limited slip friction pair is connected with the housing by spline teeth; the driven friction plate of the limited slip friction pair is connected with the half axle gear at the same side through spline teeth, and the hydraulic device comprises an annular oil cylinder and an annular piston; the annular oil cylinder is separatedfrom the limited slip friction pair by the annular piston, and the oil conveying disc is arranged on the neck journal of the housing; and an oil sink is arranged on the oil conveying disc and is communicated with the annular oil cylinder. The invention has the advantages that: when in work, the reaction force of the friction pair on the annular piston only acts on the housing of the differential and does not affect other external parts, and the work is smooth.

Description

technical field [0001] The invention relates to a hydraulic limited-slip differential, which is mainly used in automobiles, agricultural transport vehicles, wheeled engineering machinery and other wheeled machinery, and belongs to the fields of mechanical engineering and vehicle engineering. Background technique [0002] The differential of the vehicle drive axle is an important part of the vehicle power transmission system. The ordinary differential is mainly composed of planetary gears, cross shafts, half shaft gears and housings. The function of the differential is to realize the differential speed when the wheel speeds on both sides of the drive axle are inconsistent (such as when the vehicle is turning), so as to avoid wheel slippage and reduce driving resistance and tire wear. But the disadvantage of this kind of ordinary differential is that the differential speed is not bad. If the friction inside the differential is ignored, the driving force of the driving wheels o...

AI Technical Summary

Problems solved by technology

However, the pressure of the limited-slip friction pair of the friction-plate type active limited-slip differential that appears at present is mostly driven by the motor or hydraulic force, and is applied from the outside of the differential case through the thrust bearing, which will undoubtedly cause vibration and At the same time, the pressure of the limited-slip friction pair will produce a reaction force on the support structure outside the shell, causing deformation of the support structure, and fatigue cracks will appear after long-term use

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