Method and device for detecting vehicle front wheel angle

Abstract

An automobile front wheel angle test method comprises: respectively fixing a connecting rod on the outer end faces of two front wheels of an automobile; respectively and fixedly connecting a flat plate with the outer end of each connecting rod; connecting the connecting rods with the flat plates axially; respectively arranging a camera at the front of two front wheels and on the flat plates; respectively arranging a laser indicator at the front of the two front wheels, while the laser beams of the laser indicators have cross-type sections; projecting the laser beams on the flat plates; driving the vehicle forward; using cameras to record the projection positions of the laser beams on the flat plates; according to the projection positions of the laser beams on the flat plates, using mathematical method to respectively calculate main pin trim angle, main pin leaning angle, front wheel lateral obliquity angle and front wheel front beam of the two front wheels. The invention further provides a device for realizing the method. The invention can accurately reflect grounding deviation of wheels, having simple structure and operation.

Description

Technical field: [0001] The invention relates to the field of machinery, in particular to vehicles, in particular to a method and device for detecting the angle of a front wheel of an automobile. Background technique: [0002] The car is steered by the front wheels. The caster angle, kingpin inclination angle, front wheel camber angle and the positioning value of the front wheel toe of the front wheel of the wheel may deviate, resulting in heavy steering, vehicle deviation, and abnormal tire wear, affecting the performance of the vehicle and Safety. In the prior art, the device for detecting the angle of the front wheels needs to be tested after lifting the car. However, after the car is lifted, the wheels are not subject to body pressure, which cannot accurately reflect the deviation of the wheels when they touch the ground. At the same time, the structure of the detection device in the prior art Complex and bulky, inconvenient to test. Invention content: [0003] The ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for detecting the angle of the front wheel of an automobile. The method for detecting the angle of the front wheel of the automobile needs to solve the problem that the front wheel angle detection device in the prior art cannot accurately reflect the deviation of the wheel when it hits the ground, and the structure is complex and huge. Test technical issues that are inconvenient

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