Positional parameter testing experiment table for front suspension with double cross arms

Abstract

The invention discloses a positional parameter testing experiment table for a front suspension with double cross arms. The length of a retractable upper / lower cross arm, the length of a kingpin, the position and the length of a steering knuckle arm, the length of a steering transverse draw bar, a kingpin caster angle and a camber angle are adjusted to set values by the experiment table; a wheel upward / downward jumping movement table moves vertically, so that relations between the upward / downward jumping amount of wheels and the variable quantity of the kingpin caster angle, between the upward / downward jumping amount of the wheels and the variable quantity of a kingpin inclination angle, between the upward / downward jumping amount of the wheels and the variable quantity of wheelspan and between the upward / downward jumping amount of the wheels and the variable quantity of a toe-in angle are obtained; the relation between the variable quantity of the position of a gear rack and the change of corners of the wheels is obtained by moving a steering engine; and data of three displacement sensors are transmitted into an upper computer, so that a required relational graph is obtained, and the data are stored and then are displayed on an interface. The positional parameter testing experiment table for the front suspension with the double cross arms has the advantages that the relations between the variable quantity of the camber angle and the upward / downward jumping amount of the wheels, between the variable quantity of the kingpin caster angle and the upward / downward jumping amount of the wheels, between the variable quantity of the toe-in angle and the upward / downward jumping amount of the wheels and between the variable quantity of the wheelspan and the upward / downward jumping amount of the wheels can be measured respectively; and the relation between the variable quantity of the position of the steering gear rack and the variable quantity of a steering angle is obtained.

Description

technical field [0001] The invention relates to the field of automobile engineering, in particular to an experimental bench system for testing positioning parameters of a double-wishbone front suspension. Background technique [0002] The suspension system is an important part of the car, and the performance of the car suspension is an important factor affecting the ride comfort, handling stability and driving speed of the car. Therefore, the only way to improve the performance of the suspension is to design a new type of suspension, optimize the original suspension, and make the performance of the suspension reach the optimum state. [0003] According to the structural characteristics of the guiding mechanism, automobile suspension can be divided into two categories: non-independent suspension and independent suspension. Among the independent suspensions, the outstanding advantage of the double-wishbone suspension lies in the flexibility of the design. The position of the ...

AI Technical Summary

Problems solved by technology

In order to visually demonstrate the influence of the suspension guide mechanism on the change of the wheel alignment parameters, an experimental equipment with convenient adjustment of mechanism parameters and suitable for testing and analysis of the motion parameters of the double-wishbone front suspension guide mechanism is designed, and there is no similar product at present.

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