Auxiliary spring device adopting torsion bar as elastic element

Abstract

The invention discloses an auxiliary spring device adopting a torsion bar as an elastic element. The device comprises symmetrically arranged frames, a rear axle arranged at the lower parts of the frames and a torsion bar connected with the upper parts of the frames at two sides, a main spring is arranged at one sides of the frames, hinged supports are arranged at two ends of the main spring, a plate spring pressing plate is arranged at the upper part of the main spring, and the plate spring pressing plate is fixedly connected with the rear axle through a plurality of U-shaped bolts; bearing pedestals are arranged at the two ends of the torsion bar, bushings are arranged in the bearing pedestals, and the torsion bar is installed in the bushings. Rocker arms are arranged at the two ends of the torsion bar in a front-back reverse mode, the contact ends of the lower portions of the rocker arms are free ends, the rocker arms do not make contact with the plate spring pressing plate when a vehicle is in a no-load or light-load state, the suspension system only acts on the main spring, and when the vehicle reaches a certain load, the rocker arms make contact with the plate spring pressingplate, and the main spring and the torsion bar jointly act. By the adoption of the mode that the steel plate spring main spring and the torsion rod auxiliary spring are combined, the weight of the auxiliary spring in the suspension system is reduced, so that the unsprung mass is reduced, and the vehicle running smoothness is improved.

Description

technical field [0001] The invention belongs to the technical field of vehicle suspension, in particular to an auxiliary spring device using a torsion bar as an elastic element. Background technique [0002] In the automobile suspension system, the auxiliary spring is used in the rear suspension. It does not work when the vehicle is unloaded or lightly loaded, and only the main spring is loaded; when it is fully loaded, the main and auxiliary springs work at the same time; the purpose of setting the auxiliary spring is Reduce the suspension bias frequency at no-load and light-load conditions to obtain good comfort. [0003] In the prior art, the secondary springs are mostly vertically placed leaf springs, one frame on the left and right sides, and two secondary spring supports on the left and right sides. The disadvantages of the prior art are: heavy weight (two leaf spring auxiliary springs and four auxiliary spring brackets), large unsprung mass, and when the wheels encou...

AI Technical Summary

Problems solved by technology

The disadvantages of the prior art are: heavy weight (two leaf spring auxiliary springs and four auxiliary spring brackets), large unsprung mass, and when the wheels encounter bumps, the suspension system needs a long time to absorb the energy of the vibration , causing the body to shake up and down, affecting the ride comfort of the vehicle

Images