Central steering type independent suspension

Abstract

The invention relates to a central steering type independent suspension suitable for serving as an independent suspension of a commercial vehicle. The suspension comprises a spring, a thrust bearing, a hollow section steel structure, two upper cross arms, a steering knuckle and two lower cross arms, wherein the hollow section steel structure is arranged on the steering knuckle; an air spring is connected with the hollow section steel structure through the thrust spring; when the position of the spring is set, the axis of the spring is connected with a ground imprinting center through a tire; the outer ends of the upper cross arms are connected with the hollow section steel structure through spherical hinges; the outer ends of the two lower cross arms are connected to the steering knuckle through spherical hinges; the inner ends of the upper cross arms and the lower cross arms are connected to a car frame through spherical hinges. The suspension is simple and reasonable in structure; a swing arm on the suspension is flexibly arranged in height, the lateral force on a ball pin of the swing arm is small, the road feel is good, the steering force and the impact force transmitted to a steering wheel are small, and the aligning torque required for wheels in a low-speed state can be reasonably provided.

Description

technical field [0001] The invention relates to a center-steering independent suspension. The independent suspension can realize that the lateral force of the ball pin is small when the vehicle is in a neutral position, and the road feeling is accurate and excellent. It is used as an independent suspension for commercial vehicles. Background technique [0002] The traditional independent suspension design needs to consider the steering performance of the vehicle at low speeds. Usually, the virtual kingpin axis has a certain angle with the tire plane, that is, the inclination angle of the kingpin. This inclination angle can make the wheel deflect and form a righting moment, so that the steering wheel has a "feel". However, due to the inclination angle of the kingpin, the offset distance of the kingpin is reduced, which increases the frictional resistance between the tire and the road surface and accelerates tire wear. At the same time, the steering ball pin produces a large...

AI Technical Summary

Problems solved by technology

However, due to the very small inclination angle of the kingpin, the steering wheel basically has no return to centering performance at low speeds, and cannot maintain the stable straight-line driving performance of the car.

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