A rapid detection method for vehicle passage circles with a pressure-regulating liquid spraying device

Abstract

The invention relates to a rapid detection method for a vehicle passage circle with a pressure regulating liquid spray device. The steps are: pre-measurement preparation, field measurement and data analysis. When preparing for the test, install the pressure regulating liquid spray device, and preset the test points according to the structure of the tested vehicle (21) and the right triangle: measuring point A⒀ outside the center of the rear axle, measuring point B⒁ at the outermost front, and measuring point C⒂ inside the center of the rear axle . The pressure regulating liquid spraying device is equipped with pump 1 (3), pump 2 (4) and pressure regulating valve (8). During field measurement, the vehicle (21) to be inspected is positioned and set, the liquid spray device is activated, the liquid is sprayed at a low level to form a trajectory, and data is measured according to the preset measurement points. During data analysis, a right-angled triangle layout is used to calculate the turning radius of the front point on the outside of the inspected vehicle (21), and to determine the circular passability of the vehicle passage of the inspected vehicle (21). The invention has the advantages of simple method, convenient operation, good repeatability of the detection process and wide range of vehicle models to be inspected.

Description

technical field [0001] The invention relates to a rapid detection method for vehicle passage circles with a pressure regulating liquid spraying device used in the technical field of vehicle detection. Background technique [0002] Chinese patent application CN106969923A discloses a vehicle channel circular track testing system and method, and Chinese utility model patent approval CN206832478U discloses a vehicle channel circular track testing system, or uses the ground concentric circle method to judge whether the vehicle under inspection exceeds the channel line Vehicle curve passability, or use the field rotating column method to determine the vehicle curve passability by means of angle distance signal acquisition and trajectory data fitting. The detection and operation defects are: limited space, large error, and too long time , low efficiency, poor test repeatability, high safety risk, difficult to grasp the position of the concentric circle, difficult to control the ins...

AI Technical Summary

Problems solved by technology

[0002] Chinese patent application CN106969923A discloses a vehicle channel circular track testing system and method, and Chinese utility model patent approval CN206832478U discloses a vehicle channel circular track testing system, or uses the ground concentric circle method to judge whether the vehicle under inspection exceeds the channel line Vehicle curve passability, or use the field rotating column method to determine the vehicle curve passability by means of angle distance signal acquisition and trajectory data fitting. The detection and operation defects are: limited space, large error, and too long time , low efficiency, poor test repeatability, high safety risk, difficult to grasp the position of the concentric circle, difficult to control the inspected vehicle, difficult to install and debug the detection device, and high maintenance cost of the detection site

[0003] In the existing technology, on the one hand, the normal-pressure liquid spray trajectory device for vehicle passage circle detection is not conducive to the continuous display and shape maintenance of the trajectory, which brings interference to subsequent parameter measurement

On the other hand, the vehicle under inspection needs to drive dynamically during the detection of the vehicle passage circle, which virtually increases the safety risk and expands the detection error

Images