Adjusting device and adjusting method for kingpin caster angle of double wish-bone arm type front suspension system

Abstract

The invention relates to an adjusting device of a kingpin caster angle of a double wish-bone arm type front suspension system, which comprises at least one adjusting inserting piece (3) which is inserted and fixed between attaching surfaces wherein an upper swinging arm shaft is connected a fixed bracket (5) of a frame. Connecting points comprises front connecting points and rear connecting pints; when the inserting piece (3) is inserted into the front connecting points, the kingpin caster angle is reduced, and when the inserting piece (3) is inserted into the rear connecting points, the kingpin caster angle is increased. By setting the inserting piece, the kingpin caster angle is adjusted within the design requirements, thereby the errors of processing technique is made up, and vehicles retain the capability of linear running or quick restoration of a steering wheel after steering in the process of running.

Description

technical field [0001] The invention relates to a device and method for adjusting caster angle of a kingpin of a double-wishbone front suspension. Background technique [0002] In the non-independent leaf spring front suspension system, the kingpin inclination angle of the front axle is generally not adjustable, and the change of the kingpin caster angle is mainly achieved by changing the relative position of the leaf spring support and the kingpin during vehicle design. After the front axle is installed, the caster angle of the kingpin is a definite value, and its accuracy can only be guaranteed by the processing technology. If the caster angle of the actual vehicle has a large error from the design value, some models can use a spring between the leaf spring and the axle bracket. Add wedges to change the caster angle. [0003] In the field of passenger cars, the front suspension is basically an independent suspension. The kingpin is only a virtual axis, but it is still a m...

AI Technical Summary

Problems solved by technology

[0003] In the field of passenger cars, the front suspension is basically an independent suspension. The kingpin is only a virtual axis, but it is still a main positioning parameter of the front wheel. A large error from the design value will cause the vehicle to deviate or have a poor alignment effect. Difference

Because the main pin of this suspension is only a virtual axis, it is difficult to adjust

Therefore, in most models, especially those with MacPherson independent suspension, there is no adjustment device for the caster angle of the kingpin, and the angle of the kingpin is mainly guaranteed by the machining accuracy of the parts.

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