Integrated the two -freedom hinge chassis of the dual -twist rod vertical arm -type independent suspension

Abstract

The invention discloses a two-degree-of-freedom hinged chassis integrated with a double torsion-bar trailing arm type independent active suspension, comprising a front chassis, a rear chassis and a two-degree-of-freedom hinge mechanism. The front chassis is connected with the rear chassis through the two-degree-of-freedom hinge mechanism. Independent active suspensions are arranged on both sides of the front chassis and the rear chassis, and an upper beam is connected between the independent active suspension and the chassis. The independent active suspension includes two parallel torsion bar springs, both of which are on A one-way clutch is arranged, and the one-way clutches on the two torsion bar springs are engaged with each other. One end of one torsion bar spring is connected with a power source through the one-way clutch, and the other torsion bar spring is connected with a trailing arm through the one-way clutch. The lower end is connected with tires, and the power source and trailing arm are connected with the upper beam. The invention improves the working life of the torsion bar spring and the adjustment range of the body height of the active suspension; realizes that the suspension actively adjusts the body height in two directions and absorbs the vibration in two directions, and improves the passability of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of automobile suspension and chassis, in particular to a two-degree-of-freedom articulated chassis integrating a double torsion bar trailing arm type independent active suspension. Background technique [0002] In the face of complex road surfaces, the key components in the suspension system of the vehicle are subjected to great impact loads, and their fatigue life and reliability have a huge impact on the performance of the vehicle. The torsion bar spring is an important component of the vehicle suspension. , In the actual use process, it is subjected to single or alternate torsional loads, and at the same time, it is subjected to shock and vibration from different road conditions and ground. Its fatigue life and reliability play a vital role in improving the vehicle's maneuverability. . In recent years, in order to improve the vehicle's ability to adapt to different terrains and meet people's needs for th...

AI Technical Summary

Problems solved by technology

[0003] The main failure mode of the torsion bar spring is fatigue fracture, and when the torsion bar spring is subjected to torsion in different directions relative to the initial state, its life will be greatly affected

Most of the existing torsion bar spring passive suspensions are pre-tightened, so that when excited by road surfaces in different directions, the torsion bar spring always maintains a unidirectional twist relative to the initial position; but on the existing active suspension, If the pre-tightening installation method is not used, the torsion bar spring will bear torsion in different directions relative to the initial state, and the pre-tightening installation method will greatly affect the active adjustment range of the vehicle body height

[0004] At the same time, more and more engineering vehicles and off-road vehicles have begun to adopt a multi-degree-of-freedom articulated chassis structure in order to achieve good ground adaptability. This structure can keep the wheels attached to the terrain, obtain sufficient driving force, and improve vehicle passing. However, except for the steering degree of freedom, the existing multi-degree-of-freedom articulated vehicles are passively adapted, and the stability is poor, and they are prone to tipping

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