Electric wheel Macpherson suspension structure capable of adjusting position of main pin axis

Abstract

The invention relates to an electric wheel Macpherson suspension structure capable of adjusting the position of a main pin axis. The Macpherson suspension structure comprises a wheel, a hub motor, a Macpherson suspension and an auxiliary frame. The hub motor is mounted on the wheel. The Macpherson suspension comprises a steering knuckle, a shock absorber and control arms. The steering knuckle is mounted on the hub motor. One end of the shock absorber is connected with a vehicle body through a spherical hinge, and the other end is fixed on the steering knuckle. The control arms comprise a firstcontrol arm and a second control arm. The first control arm and the second control arm are respectively connected with the steering knuckle and the auxiliary frame through spherical hinges, the extension lines of the connecting lines of the centers of the spherical hinges at the two ends of the first control arm and the second control arm are intersected to form a virtual spherical hinge point, and the virtual spherical hinge point is connected with the center of the spherical hinge at one end of the shock absorber to form a virtual main pin axis. Compared with the prior art, the Macpherson suspension structure has the advantages of simple structure, high flexibility, space saving and the like.

Description

technical field [0001] The invention relates to the field of electric vehicle chassis and transmission, in particular to an electric wheel McPherson suspension structure capable of adjusting the axial position of a kingpin. Background technique [0002] In recent years, the investment of the country and enterprises in the field of electric vehicles has been continuously increasing, and there are many driving forms of electric vehicles on the market, mainly including centralized motor drive and distributed motor drive, and distributed drive can be divided into two types: For wheel drive and hub drive. The hub electric wheel assembly is the core power component of the hub-driven electric vehicle. Due to its simple drive system and vehicle structure, large available space, and high transmission efficiency, the torque of each drive wheel can be independently controlled, which is conducive to improving the performance of the vehicle under severe road conditions. The driving perf...

AI Technical Summary

Problems solved by technology

However, since the motor is installed in the driving wheel, the space in the wheel is tight. When the hub drive system is used for steering wheels, it is not conducive to the arrangement of the connection point between the suspension control arm and the steering knuckle.

However, this connection point is closely related to the kingpin offset. Because the connection point cannot extend into the wheel, the kingpin offset is too large. Excessive kingpin offset will cause the wheel to swing back and forth when turning, and the front of the car will be caused by Shifting occurs due to steering, and the direction is unstable when braking, and the phenomenon commonly known as "steering wheel thugs" will also occur

This problem restricts the application of hub electric drive system to a certain extent.

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