Dimensional measurement method for rail vehicle body

Abstract

The invention relates to a dimensional measurement method for a rail vehicle body. The dimensional measurement method comprises the following steps: a reference adjustment step: placing a laser measuring instrument with an automatic leveling function under a vehicle body, enabling the laser measuring instrument to emit a first vertical reference laser line and a second vertical reference laser line which are perpendicular to each other, and adjusting the first vertical reference laser line and the second vertical reference laser line to respectively align with a longitudinal center line of the vehicle body and a center line of a sleeper beam of the vehicle body; a scale mounting step: arranging a scale on each part of the vehicle body to be measured; and a data reading step: reading the data on the scale radiated by the first vertical reference laser line in the direction of the longitudinal center line of the vehicle body, and reading the data on the scale radiated by the second vertical reference laser line in the direction of the center line of the sleeper beam of the vehicle body. The dimensional measurement method is used for solving the problems that the measurement method in the prior art is inconvenient in operation, is big in the measurement error and is heavy in the task load, so that the task load of the dimensional measurement of the vehicle body is reduced, the operation efficiency is improved, the dimension of the vehicle body can be measured quantitatively, and the measurement accuracy can be improved.

Description

technical field [0001] The invention belongs to the technical field of rail vehicles, and in particular relates to a method for measuring the size of a rail vehicle body. Background technique [0002] At present, during the repair or maintenance of rail vehicles, it is usually necessary to measure the size of the rail vehicle body, including the longitudinal deflection of the car body, the height of the four corners, and the inclination of the car body. Existing measurement methods usually use the horizontal reference measurement method based on U-shaped tubes. Liquid is installed in the U-shaped tubes, and the measured vehicle body size is qualitatively judged by the liquid level difference at both ends of the U-shaped tubes. This measurement method requires manual participation. , it is easy to introduce manual errors, and due to the large size base of the rail vehicle body, the U-shaped water pipe is generally long and difficult to operate, requiring the cooperation of mu...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for measuring the size of a rail vehicle body, which is used to solve the defects of inconvenient operation, large measurement error and heavy task in the prior art, reduce the task of measuring the size of the car body, improve operation efficiency, and enable quantitative measurement Car body size, improve measurement accuracy

Images