A dual-crank drive McPherson suspension-by-wire independent steering system

Abstract

The invention provides a double-crank transmission Macphersan wiring control independent steering system which comprises a frame, wheels, an axle, a Macphersan suspension connecting rod guide mechanism, a steering motor and a space double-crank transmission mechanism. The system has the beneficial effects of being beneficial for manipulation stability of a vehicle and high in universality. The space double-crank mechanism is adopted, motor output power is transferred to a knuckle efficiently, and the knuckle can rotate around a main hinge pin line to achieve steering. By adjusting the length of a connecting rod, the wheel rotating amount caused by wheel hopping is reduced, kinds of key parts are reduced greatly, and the batch manufacturing cost is reduced. The system has the beneficial effects of being large in independent steering angle range of the wheels, simple in structure, reliable in work, convenient to assemble and low in cost.

Description

technical field [0001] The invention relates to the field of steer-by-wire vehicles, in particular to a steer-by-wire independent steering system that adopts double crank transmission and is used for MacPherson suspension. Background technique [0002] The traditional steering system transmits the steering action of the driver operating the steering wheel to the steering wheels through the steering mechanism. At the same time, the steering trapezoidal mechanism ensures a certain functional relationship between the inner and outer wheel angles during steering. The wire-controlled independent steering system uses control signals to replace the steering wheel and the steering wheel. The original mechanical connection between the inner and outer wheels is independently controlled by their respective control signals. The advantage of the wire-controlled independent steering system is that through computer control, each steering wheel can be turned independently, thereby improving...

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Problems solved by technology

[0004] Chinese patent CN 203126938 U also uses MacPherson suspension, but there are certain defects in this solution, that is, the steel cable has certain elasticity, and the wheel may swing due to the stretching and shortening of the steel cable during driving. This is very dangerous for a moving car

There is also the Chinese patent CN 203126939 U. Although the motor and the motor reducer are integrated on the main pin, the original long power transmission chain is canceled, and sufficient space is provided for the elastic components of the suspension system. However, the solution There are also certain defects, that is, the motor and reducer are integrated on the kingpin, which increases the unsprung mass and increases the relative dynamic load of the wheels, which is extremely unfavorable for the handling stability of the car

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