Line full section automatic detection system

Abstract

The invention discloses a line full section automatic detection system which comprises a hand-push type mechanical vehicle with a reference per se, a rotating laser scanning distance measuring device, a positioning device, a data acquisition device, a data analysis and processing device and a power supply device, wherein the rotating laser scanning distance measuring device, the positioning device, the data acquisition device, the data analysis and processing device and the power feeding device are arranged on the hand-push type mechanical vehicle; the rotating laser scanning distance measuring device and the positioning device are respectively connected with the input end of the data acquisition device; the output end of the data acquisition device is connected with the data analysis and processing device; the rotating laser scanning distance measuring device is arranged on a vehicle body beam of the hand-push type mechanical vehicle arranged on a line central line; and the data acquisition device is provided with a synchronous signal generation unit and is used for labelling a time label when acquiring data. Based on the invention, full section automatic detection on rail lines can be realized, and works departments can rapidly, conveniently, repeatedly and accurately measure a line full section without depending on operational vehicles and detecting vehicles and without calibration and dynamic compensation.

Description

technical field [0001] The invention relates to the measurement of the full section of the track in rail transit, in particular to an automatic detection system for the full section of the track. Background technique [0002] Geological deformation, landslides caused by natural disasters (such as heavy rain, mountain torrents, etc.), dynamic impact of running vehicles, falling objects, and abnormal protrusion and lack of facilities, etc., will often cause deformation and encroachment of infrastructure such as tracks, tunnels, and bridges. The appearance of these phenomena seriously threatens the smooth flow and safety of rail transit. In addition, with the rapid development of my country's rail transit industry, the construction and acceptance process of a large number of new lines and renovated lines requires accurate measurement of the full-section dimensions of all lines to guide rectification operations. At the same time, the operating lines also need to be retested dur...

AI Technical Summary

Problems solved by technology

This method has simple equipment and low cost, but has low measurement accuracy and poor automation, and is only applicable to the detection of tunnel body deformation.

For the measurement of tunnel profile and ballast bed section in China, ground instruments or devices are mostly used for measurement, or some parameters are measured by inspection vehicles, such as track inspection vehicles, tunnel limit inspection vehicles, etc., generally using laser-assisted triangular measurement principles. This method is susceptible to vibration and sunlight interference, and the measured section parameters are incomplete. It can only cover the range near the standard limit. It is not suitable for detecting section parameters far from the standard limit, such as the distance between adjacent lines and the side slope of the line. Therefore, it cannot meet the detection of line safety status. And the requirements of practical applications such as oversized cargo transportation

Since these traditional methods cannot guarantee the timeliness and comprehensiveness of detection at the same time, they cannot fundamentally meet the safety status monitoring needs of a large number of busy lines

In recent years, there have also been studies on installing full-section inspection equipment on inspection vehicles or operating vehicles to measure the full-section size. However, due to the vibration of the vehicle body, it is necessary to install gyroscopes and displacement meters to compensate for the vibration posture. The algorithm is complex and the cost is high.

Images