Active steering and coupling device based on double-row planetary gear trains for automobile front wheels

Abstract

The invention discloses an active steering and coupling device based on double-row planetary gear trains for automobile front wheels. The active steering and coupling device is installed between a steering wheel and a steering gear and comprises a power drive device installed on a shell and a mechanical transmission device installed inside the shell; the power drive device comprises an assistance rotation angle motor, a turbine and a worm meshing with the turbine; the mechanical transmission device comprises a planetary gear train I and a planetary gear train II, wherein the planetary gear train I and the planetary gear train II are arranged in parallel; a sun wheel of the planetary gear train I is coaxial with a sun wheel of the planetary gear train II, and a planet carrier I is fixed to the shell; partial power manually input is transmitted to a gear ring I through an input shaft, then is input into the planetary gear train I through the gear ring I and finally is output to the planetary gear train II from the sun wheel I; partial power of the assistance rotation angle motor is transmitted to a planet carrier II through the turbine and the worm; and the sun wheel II and the planetary gear train II jointly serve as input, and a coupled rotation angle is output outwards through a gear ring II. According to the device, mechanical connection is adopted, machining is convenient, transmission with a variable transmission ratio is realized, and the steering process is safe and flexible.

Description

technical field [0001] The invention belongs to the field of automobile steering systems, and in particular relates to an active steering coupling device for automobile front wheels based on a double-row planetary gear train. Background technique [0002] The steering system is an important part of the car chassis, and its quality directly affects the driver's sense of road and driving safety. With the continuous advancement of automobile technology, the steering system has successively experienced mechanical, hydraulic, electronically controlled hydraulic and electric power. Although it makes the driving easier to a certain extent, because the transmission ratio between the steering wheel and the steering gear is fixed, the steering angle of the car cannot be corrected in a timely manner to make the car turn flexibly at low speeds and stable at high speeds. . [0003] "Active steering technology" means that the car actively applies steering control to the car according to...

AI Technical Summary

Problems solved by technology

Since the active steering system of the wire control type cancels the mechanical connection between the steering wheel and the steering gear, when the system fails, the vehicle may not be able to turn, which is prone to traffic accidents

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