Rear-axle assembly with overlapping of torsion-beam main beam, upper-plate side beam and lower-plate side beam and manufacture method thereof

Abstract

The invention relates to the field of manufacture of vehicle parts and particularly relates to a rear-axle assembly with a torsion-beam main beam, an upper-plate side beam and a lower-plate side beam. The invention aims at designing a rear-axle assembly with overlapping of the torsion-beam main beam, the upper-plate side beam and the lower-plate side beam. The invention mainly overcomes the prior art, manufactures and designs a longitudinal-arm twisting-beam type suspension torsion beam utilizing hydraulic formation. The longitudinal-arm twisting-beam type suspension torsion beam is characterized in that the original reinforced plates are omitted and the side beams are metallized by using an upper plate and a lower plate. The rear-axle assembly with the torsion-beam main beam and the upper-plate side beam and the lower-plate side beam is realized by the following technical scheme. The rear-axle assembly comprises the main beam, the side beams, wheel connecting installation plates and auxiliary-spring installation brackets, wherein the main beam is a closed beam; a U-shaped section reinforcing groove is integrally arranged at the bottom part of the main beam; the main beam is connected on the side beams in an occlusive manner and is connected to the side beams; and the left side beam or the right side beam comprises a side-beam upper plate and a side-beam lower plate which are covered mutually to form a side-beam hollow groove.

Description

technical field [0001] The invention relates to the field of vehicle parts manufacturing, in particular to a preparation method for a rear axle assembly with a torsion beam main girder and upper and lower plate side beams and the rear axle assembly with the torsion beam main girder overlapping the upper and lower plate side girders. to make. Background technique [0002] The car is one of the modern technologies that we cannot live without. It facilitates our transportation and road traffic, and the torsion beam suspension in the chassis is a type of rear suspension of the car, which is balanced by a torsion beam The left and right wheels jump up and down to reduce the shaking of the vehicle and keep the vehicle stable. Although some manufacturers claim that their cars are equipped with a torsion beam semi-independent suspension, the torsion beam is still a type of non-independent suspension. The torsion beam has an independent suspension. Type torsion beam and non-independ...

AI Technical Summary

Problems solved by technology

[0005] However, the suspension system of the semi-independent structure also has the following disadvantages: poor load-bearing performance, weak anti-rolling ability, poor shock absorption performance, and limited comfort

The torsional beam generates torsional stress and shear stress, and there is a higher stress at the welded joint, which allows the load on the rear bearing to be limited by the strength of the torsion beam; in order to ensure driving stability, the joint points of the elastic bushings of the longitudinal swing arms on both sides are stressed Complicated; the wheels on both sides interact with each other; poor comfort; constantly carry out extreme design, eliminate various stresses caused by load bearing, and disperse stress, which is the shortcoming we have been trying to overcome

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