A hydraulic adjustment mechanism for steering wheel toe value

Abstract

The invention discloses a hydraulic toe-in value adjusting mechanism for steering wheels. The hydraulic toe-in value adjusting mechanism for the steering wheels comprises a front axle, a transverse draw bar, the left steering wheel, the right steering wheel and a steering wheel toe-in value adjusting mechanism, wherein the adjusting mechanism comprises the transverse draw bar and a hydraulic mechanism; the transverse draw bar comprises a left transverse draw bar body, a right transverse draw bar body, a left electro-hydraulic servo cylinder and a right electro-hydraulic servo cylinder; and the hydraulic mechanism comprises a constant displacement pump, a stepping motor, a variable pump, a first overflow valve, a second overflow valve, a third overflow valve, four one-way valves and an oil tank. In a running process of a vehicle, the lengths of two ends of the transverse draw bar can be automatically adjusted, so that a toe-in value can be adjusted to be matched with a camber angle, the shortcoming that the lengths of two sides of the transverse draw bar are required to be respectively adjusted manually when the vehicle stops so as to adjust the toe-in value is overcome, and adjustment errors caused by artificial reasons are reduced. The length of the transverse draw bar can be accurately controlled by the electro-hydraulic servo cylinders with MR (magnetic resonance) displacement sensors, linear movement accuracy can be controlled to reach 0.1mm, and the toe-in value adjustment accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to a steering wheel toe value adjusting mechanism and a front axle assembly of a vehicle. Background technique [0002] The toe value of the steering wheel of the vehicle is the positioning parameter of the front wheel, including wheel camber, wheel toe, kingpin inclination, kingpin caster, and is the main parameter affecting tire wear. Under the existing technology, under variable loads such as bus loading and unloading, truck empty load, full load, and steering driving conditions, the matching relationship between the toe value of the steering wheel and the camber angle is destroyed; in addition, during the tire maintenance process, the camber angle is The matching relationship between the toe value and the camber angle required by the static design is constantly destroyed. [0003] The above reasons lead to the change of the matching relationship between the toe val...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of automatically adjusting the lengths of the two ends of the tie rods during the running of the vehicle and realize the matching of the toe-in value and the camber angle, the present invention provides a vehicle front axle assembly with a steering wheel toe-in value adjustment mechanism

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