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Method for measuring front toe angle of automobile front wheels

A measurement method and technology of toe angle, applied in wheel testing, measuring devices, instruments, etc., can solve problems such as vehicle toe angle measurement services, avoid vehicle wheel loss and safety accidents, improve measurement work efficiency, and measure accurately high degree of effect

Inactive Publication Date: 2018-07-20
NANJING WOYU MECHANICAL & ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the major maintenance and testing centers do not have the measurement service for the toe angle of the car

Method used

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  • Method for measuring front toe angle of automobile front wheels
  • Method for measuring front toe angle of automobile front wheels

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 2 It is a schematic diagram of the measurement principle described in the present invention.

[0025] Such as figure 2 As shown: the left front wheel 1a and the right front wheel 1b are the positions and postures of the front wheels set when the car leaves the factory, because the left front wheel 1a and the right front wheel 1b are mirror images of each other, therefore, at this time, the left front wheel 1a and the right front wheel The toe angle of the wheel 1b is α, and in the subsequent measurement process of the toe angle, a is the threshold value of the front wheel.

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Abstract

The invention discloses a method for measuring the front toe angle of automobile front wheels. The method comprises the steps that (1) the measurement center point of a left front wheel and a right front wheel is determined; (2) the measurement center point and an infrared laser transmitter are used to determine the offset distance of the front wheels; (3) through the offset distance Y read by a camera, the offset distance of the front wheels is further converted into the measurement angle value of the front toe angle of the front wheels; and (4) the measurement angle value is compared with afactory-set threshold of an automobile, and the front toe angle is corrected according to the comparison result. According to the invention, the principle of laser ranging is used to accurately calculate the offset of the front toe angle of the automobile front wheels, which fills the blank of the front toe angle measurement technology of the automobile at home and abroad; the measurement method provided by the invention is simple, and the measurement accuracy is high; the measurement efficiency is effectively improved; and the method provides a strong basis for the precise adjustment of the front toe angle of the automobile, and at the same time can effectively prevent automobile wheel loss and safety accidents.

Description

technical field [0001] The invention relates to a method for measuring the toe angle of a front wheel of an automobile, belonging to the technical field of automobile chassis detection. Background technique [0002] figure 1 It is a schematic diagram of the formation structure of the toe angle of the front wheel according to the present invention. [0003] Such as figure 1 As shown: the structure of the left front wheel 1a and the right front wheel 1b of the car is the same, and they are mirror images of each other. When the left front wheel 1a and the right front wheel 1b are in the correct state, the front parts are synchronously inclined inward slightly, so there is a relative the angle of itself in the state in which it is not tilted inward (vertical state), figure 1 The dotted line in the middle shows the attitude of the front wheels when they are not tilted, that is, the left front wheel 0a in the vertical state and the right front wheel 0b in the vertical state, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26G01M17/013
CPCG01B11/26G01M17/013
Inventor 郑明誉
Owner NANJING WOYU MECHANICAL & ELECTRICAL EQUIP CO LTD
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