Independent steering device for rail-mounted four-wheel-drive electric automobile

Abstract

The invention belongs to the technical field of automobile steering devices and particularly relates to an independent steering device for a rail-mounted four-wheel-drive electric automobile. The independent steering device comprises an annular component, a main steering base frame and a hub assembly, wherein the main steering base frame is linked with the annular component in a sliding manner, amain steering mechanism is arranged on the main steering base frame, the main steering base frame can be driven to slide along the annular component by the main steering mechanism and is linked with the hub assembly through a damping assembly; and the hub assembly comprises an auxiliary steering mechanism and a rotatable hub, the hub is linked with the auxiliary steering mechanism, and the hub canrotate through the auxiliary steering mechanism. According to the independent steering device, the problems of independent steering, sensitivity and smoothness of the electric automobile are solved,the structures including a steering transverse tie lever, a steering node arm and the like of a traditional steering system are omitted, an auxiliary steering motor drives an auxiliary steering gear to drive a steering part so as to realize small steering of vehicle wheels, and the main steering motor drives the whole double wishbone suspension frame system to rotate so as to realize large steering.

Description

technical field [0001] The invention belongs to the technical field of automobile steering devices, and in particular relates to an independent steering device for a rail-type four-wheel drive electric vehicle. Background technique [0002] Automobile steering system is a key component of the vehicle, which not only affects the driving comfort, but also is an important part of driving safety. The traditional dual-steering system is gradually unable to respond due to slow response, inflexible steering, small corners, and poor directional stability when driving at high speeds. To meet people's increasingly higher requirements for vehicle active safety, an efficient steering system is urgently needed to achieve good vehicle steering safety. Judging from the research status at home and abroad, four-wheel independent drive electric vehicles are mainly driven by hub motors. Since the hub motor is installed inside the wheel, the unsprung mass of the car is increased, which makes t...

AI Technical Summary

Problems solved by technology

Since the hub motor is installed inside the wheel, the unsprung mass of the car is increased, which makes the ride comfort and handling of the vehicle worse. In addition, the power and torque of the hub motor are generally smaller than that of the wheel motor, and the car's power is not as good as that of the wheel motor. , and the use of wheel side motor drive, if not properly designed, will also increase the unsprung mass, and at the same time it is difficult to realize four-wheel independent drive and four-wheel independent steering at the same time from the structure

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