Multi-link linear-guidance independent suspension with 2-RRR expansion compensation mechanisms

Abstract

The invention relates to a multi-link linear-guidance independent suspension with a 2-RRR expansion compensation mechanisms. The multi-link linear-guidance independent suspension comprises a vehicle body, a spring shock absorber system and a knuckle, wherein the spring shock absorber system is respectively connected with the knuckle and the vehicle body, the knuckle is connected with a wheel through a hub unit. The multi-link linear-guidance independent suspension further comprises four suspension branched chains, namely a first upper suspension branched chain, a second upper suspension branched chain, a first lower suspension branched chain and a second lower suspension branched chain, wherein the first upper suspension branched chain and the second upper suspension branched chain form an upper suspension branched chain, the first lower suspension branched chain and the second lower suspension branched chain form a lower suspension branched chain, and each suspension branched chain comprises an inner long link, an outer short link and a 2-RRR mechanism with an expansion compensation function. The multi-link linear-guidance independent suspension has the beneficial effects that a wheel camber angle, a Kingpin inclination angle and caster, left-right wheel track, toe-in (toe-out) and front-back axle base keep unchanged all the time when wheels moves up and down; moreover, the multi-link linear-guidance independent suspension has the outstanding advantages of simple structure, strong designability, convenience in assembly and adjustment and the like.

Description

technical field [0001] The invention relates to an automobile suspension system, in particular to a multi-link linear guide independent suspension with a 2-RRR expansion and contraction compensation mechanism used in a space multi-link independent suspension system. Background technique [0002] Suspension is a general term for devices that ensure the elastic connection between the wheel or axle and the vehicle's load-carrying system (frame or load-bearing body) and can transmit loads, ease shocks, attenuate vibrations, and adjust the position of the vehicle body during driving. Generally, the suspension is mainly composed of three parts: elastic elements, shock absorbers and guide mechanisms. In some cases, a certain component plays two or three roles, such as a leaf spring that also acts as an elastic element and a guiding mechanism. The function of the guide mechanism is to ensure reliable transmission of all forces and moments between the wheel and the body or frame, an...

AI Technical Summary

Problems solved by technology

The suspension branch chains in the above patents [1] and [2] are all RRR kinematic chains, and their bending stiffness is poor along the direction perpendicular to the plane determined by the RRR kinematic chain; the suspension branch chains in patent [3] are RPR kinematic chains , has good stiffness in all directions, and the moving pair is difficult to process, the processing cost is high, and the accuracy is difficult to guarantee

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