Electric automobile four-wheel independent driving and steering execution mechanism and execution method

Abstract

The invention relates to an electric automobile four-wheel independent driving and steering execution mechanism and execution method. The execution mechanism comprises a steering mechanism and a driving mechanism which are installed at the inner side face of a hub; a steering motor and steering reducer assembly in the steering mechanism is fixed to a chassis of an electric automobile, an output shaft of a steering reducer is connected to the axis center of a rotary disc, a lower control arm is connected to the steering motor and steering reducer assembly and a steering knuckle, and the two ends of a connection rod are connected with the rotary disc and the steering knuckle through ball-headed pins; a driving mechanism is installed on the steering knuckle, an output shaft of a driving reducer in the driving mechanism is connected to the hub, and the driving reducer is installed in the hub. According to the electric automobile four-wheel independent driving and steering execution mechanism and execution method, a driving motor drives the hub to rotate, the steering motor controls the hub to steer through all transmission parts, electric automobile four-wheel independent driving and steering are achieved, the reliability and safety of the electric automobile in a medium-high speed driving working condition are improved, the driving force of each wheel can be precisely controlled,and the manipulation stability and steering flexibility of the automobile are greatly improved.

Description

technical field [0001] The invention relates to the field of electric automobile manufacturing, in particular to an electric automobile four-wheel independent drive independent steering actuator and an execution method. Background technique [0002] Due to the need for energy saving and emission reduction, electric vehicles are becoming more and more popular. At present, the driving method of a car still uses a single engine or a single electric motor to provide a power source, which is transmitted to each drive wheel of the car through a mechanical transmission system. Because there is only a single power source, the power distribution basically depends on the mechanical transmission mechanism, so it is impossible to accurately control the driving force of each wheel. In addition, the steering mode of existing automobiles generally adopts the front wheel four-bar linkage mechanism, that is, the two front wheels of the car are deflected in the same direction through the ste...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a four-wheel independently driven independent steering executive mechanism and execution method of an electric vehicle, in which four driving motors respectively drive the rotation of the four wheels of the electric vehicle, and the four steering motors respectively control the four wheels of the electric vehicle. The steering of each wheel solves the problem of easy damage to the lateral steering mechanism under the medium and high-speed driving conditions of the car and the problem of the guide rod being stuck due to large lateral force, and improves the reliability and reliability of the electric vehicle under the medium and high-speed driving conditions. Safety, and can precisely control the driving force of each wheel, greatly improve the steering stability and steering flexibility of the car, and reduce the occurrence of traffic accidents

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