A suspension steering device for a hub direct drive electric vehicle

Abstract

The invention discloses a suspension steering device for a hub direct-driving electric vehicle and relates to the field of vehicle suspensions and steering mechanisms. The other end of a first vertical twisted part is connected with one end of a second vertical twisted part. The other end of the second vertical twisted part is fixedly connected with one end of a direction connecting rod which is fixedly arranged on the horizontal beam. A gyropendulum arm is arranged on the direction connecting rod. A gyroscope is arranged on the gyropendulum arm. Damper supports are arranged at the positions, close to a longitudinal suspending arm, of the outer sides of two longitudinal beams of a vehicle frame. An elastic damper is arranged on each damper support. One end of each elastic damper is fixed at the corresponding damper support. The other end of each elastic damper is fixed on the longitudinal suspending arm. The suspension steering device is reasonable in structure design, easy to operate and convenient to use, a large damping stroke can be provided, lateral swinging of wheels is avoided, abrasion of the wheels and a hanging mechanism is avoided, a plurality of groups of driving axles can be used on a vehicle chassis conveniently, a vehicle chasses structure is greatly simplified, and weight is lowered.

Description

Technical field [0001] The invention relates to a suspension steering device for a wheel hub direct-drive electric vehicle, and belongs to the technical field of automobile suspension and steering mechanism. Background technique [0002] In order to match the traditional transmission mode, the drive axle of the existing automobile chassis mostly adopts lateral suspension. The existing electric vehicle also uses this suspension mode. This suspension mode limits the travel of the wheel damping movement and causes the vehicle to move up and down. The occurrence of lateral displacement causes the tire to wear in the lateral direction, and the rotation plane of the wheel cannot be kept perpendicular to the ground plane, resulting in a decrease in driving stability and transmission efficiency; in order to reduce this effect, some models such as McKison suspension and multi-connector have been invented. Rod suspension and other methods, which in turn cause complex mechanisms, increased ...

AI Technical Summary

Problems solved by technology

[0002] In order to cooperate with the traditional transmission method, the drive axle of the existing automobile chassis mostly adopts lateral suspension, and the existing electric vehicle also uses this suspension method. Lateral displacement causes tire wear in the lateral direction, and at the same time, the rotation plane of the wheel cannot be kept perpendicular to the ground plane, resulting in a decrease in driving stability and a decrease in transmission efficiency; in order to reduce this effect, some inventions such as McKison suspension, Rod suspension and other methods, which in turn lead to complex mechanism, increased number of parts, increased cost and weight, decreased reliability, difficult lubrication, and cannot completely solve the wear of parts, especially it is difficult to achieve a large vibration damping stroke

[0003] In traditional wheeled vehicles, the directional stability during driving is guaranteed by the constant speed operation of the wheels on the left and right sides, and is guaranteed by the mechanical constraints of the mechanical differential and the steering gear. The mechanical differential determines the slippage of the wheels on one side When the wheel on the other side loses power; and when the road surface is uneven and the road medium changes, it will inevitably lead to directional instability. At the same time, the load on the left and right sides of the frame or the uneven wear will also cause the driving direction to deviate. Decreased driving safety and smoothness

[0004] In the electric vehicle directly driven by the wheel hub, it is difficult to solve the balance of the driving force and driving current of the wheels on both sides. The traditional electronic differential method cannot overcome the directional instability caused by the impact of the road surface, and cannot adapt to load changes and road conditions. Changes in the medium, so it has not reached the level of practical use

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