Track-seam longitudinal dislocation detection device and method thereof

Abstract

The invention discloses a track-seam longitudinal dislocation detection device and a method thereof. The detection device comprises at least two range finding sensors. The range finding sensors are arranged below a steel rail. The range finding sensors are used for detecting a longitudinal distance between a lower surface of the steel rail and the range finding sensors. The range finding sensors are fixedly installed on a sleeper (6) or a pedestal (7) of the track. The detection method comprises the following steps of installing the track-seam longitudinal dislocation detection device; carrying out reference measurement and calculating a reference longitudinal distance difference; carrying out dislocation detection and calculating an instant longitudinal distance difference; and comparing numerical values of the instant longitudinal distance difference and the reference longitudinal distance difference and analyzing the dislocation. In the invention, real-time detection can be realized, a detection process does not influence normal operation of a train and usage is convenient and safe. Through detecting a distance between the sensors at fixing positions and the lower surface of the steel rail, the longitudinal dislocation of the steel rail is determined. A detection result is reliable and precision is high. Dynamic and remote track seam dislocation detection can be realized. And the device and the method are suitable for large-scale batch detection.

Description

technical field [0001] The invention relates to a railway safety detection device, in particular to a detection device and method for longitudinal dislocation of rail joints. Background technique [0002] After more than ten years of development, China's railways have gradually entered the ranks of developed countries with high-speed railways in the world. The process of maintenance mechanization has laid a good foundation for the safety of my country's high-speed railway transportation technology. The process of speed-up transformation has also promoted the development of track detection technology. [0003] With the deepening of the speed-up reconstruction project, the use of ballastless track is becoming more and more extensive. Ballastless track, also known as ballastless track, refers to a track structure that uses an integral foundation such as concrete and asphalt mixture to replace the loose-grained gravel track bed. The sleeper itself is made of poured concrete, a...

AI Technical Summary

Problems solved by technology

This traditional detection method has the following problems: 1) The detection can only be completed after the train is stopped. Generally, the train needs to be stopped at 1-4 in the morning to cooperate with the safety inspection, which greatly affects the efficiency and benefit of railway transportation. very limited use

2) Rely on the experience of engineering personnel to judge whether the track inspection vehicle has a sense of longitudinal vibration when passing the joint, and the measurement accuracy is not high

3) Real-time, dynamic, remote, large-scale batch dislocation detection cannot be realized

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