Method and device for detecting defect of surface of steel rail based on data processing

Abstract

The invention relates to a method and device for detecting a defect of the surface of a steel rail based on data processing. The device comprises four sensors, a sensor bracket (5), a base (6), a railtransport roller (7), the steel rail (8), an encoder bracket (9) and an encoder (10); the four sensors are respectively arranged on four inner corners of the sensor bracket, the Z axes of all the sensors form a 45 degree included angle with the horizontal direction and are intersected at one point; the rail transport roller is fixed on the base and is used for supporting and transporting the steel rail. The method adopts the triangulation distance measurement principle of a linear laser, four line structured light laser sensors are used for collecting steel rail cross section profile data, and the steel rail profile data collected by all the sensors are subjected to coordinate conversion: rotation, translation, graphics splicing, and obtaining of the data splicing calibration value of allthe sensors. The method and devic can significantly improve the production efficiency, reduce the manual participation degree, and reduce the detection leakage rate and the misjudgment rate.

Description

technical field [0001] The invention relates to the technical field of railway rail surface quality detection, in particular to a method and device for detecting defects on the surface of rails based on data processing. Background technique [0002] The reliability of railway infrastructure plays a decisive role in the safe operation of high-speed and heavy-haul railways. As a part of railway infrastructure inspection, rail defect detection plays a key role in preventing derailment events caused by rail fracture and causing major injury accidents. With the development of the manufacturing industry and the introduction of advanced technology, the number of rail fractures caused by internal rail defects has gradually decreased, while the probability of rail fractures caused by rail surface defects has gradually increased. Defects on the surface of rails will not only shorten the service life of the rails, but also aggravate the wear of the wheels, resulting in peeling off blo...

AI Technical Summary

Problems solved by technology

Defects on the surface of rails will not only shorten the service life of the rails, but also aggravate the wear of the wheels, resulting in peeling off blocks, increasing the possibility of train derailment, increasing the maintenance cost of the main railway line, and reducing the density and speed of train traffic. It will also lead to broken rails or derailment, so it is necessary to increase track inspection efforts

Images