Chassis assembly structure with four wheels capable of conducting independent driving and independent steering and control method

Abstract

The invention relates to a chassis assembly structure with four wheels capable of conducting independent driving and independent steering and a control method. The chassis assembly structure comprisesa chassis and the four wheels of an electric vehicle. The inner side faces of hubs of the four wheels are each provided with an independent driving mechanism and an independent steering mechanism, and the four independent steering mechanisms are fixed to the four corners of the chassis correspondingly. Steering motor steering reducer assemblies of the independent steering mechanisms are fixed tothe chassis, and output shafts of steering reducers are connected with the axes of rotating discs. Lower control arms are connected with the steering motor steering reducer assemblies and steering knuckles, and the two ends of connecting rods are connected with the rotating discs and the steering knuckles through ball head screws correspondingly. Vertical columns sleeved with spring dampers are mounted on the steering knuckles, and the upper ends of the vertical columns are connected with a vehicle body of the electric vehicle. The four wheels of the electric vehicle are independently controlled by the independent driving mechanisms and the independent steering mechanisms which are mounted on the inner side faces of the hubs of the four wheels correspondingly. The vehicle driving modes arediversified, steering flexibility is good, and the handling stability and reliability of the vehicle are improved.

Description

technical field [0001] The invention relates to the field of electric vehicle manufacturing, in particular to a four-wheel independent drive independent steering chassis assembly structure and a control 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 steering mec...

AI Technical Summary

Problems solved by technology

In this technical solution, four drive motors respectively drive the rotation of the four wheels of the electric vehicle, and four steering motors respectively control the steering of the four wheels of the electric vehicle, so as to solve the problem that the lateral steering mechanism is easily damaged under the medium and high-speed driving conditions of the vehicle. It can improve the reliability and safety of electric vehicles under medium and high-speed driving conditions, and can accurately control the driving force of each wheel, greatly improving the handling stability and Steering flexibility to reduce traffic accidents

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