Device and method for steel rail surface online measurement and laser selective repair

Abstract

The invention discloses a device for steel rail surface online measurement and laser selective repair, which comprises a machine cart arranged on a steel rail, a three-dimensional scanner, a counter, a laser repairing device and a control device, wherein data measurement is processed for a steel rail surface by dint of the three-dimensional scanner mounted below a power engine body; the three-dimensional CAD graph of a to-be-repaired part is acquired through the comparison between the steel rail surface and a standard steel rail surface; and a complete data chain between the three-dimensional CAD graph of the to-be-repaired part and numerical control codes capable of controlling laser head movement is realized by a layering software. According to the invention, steel rail surface abrasion online measurement is associated with laser online repair equipment by the counter; high-precision selective repair is processed to the steel rail surface abrasion by dint of a high-power laser; repair time is saved; hardly-repaired parts such as a steel rail lateral face, a rail head bottom surface and the like are repaired by dint of filler wire laser repair technology; field adaption capacity is strong; working efficiency is high; and the repair of different steel rail abrasion types can be completed.

Description

technical field [0001] The invention belongs to railway rail wear surface repair technology, in particular to a device and method for on-line detection and laser selective repair of rail surface wear. Background technique [0002] Seamless track is the main laying method of railway rails. After running for a long time with high density, heavy load and high speed, various corrugation and side grinding will inevitably appear on the surface of the rail head. These wear and tear will not only reduce the comfort of passengers, increase the noise of wheel and rail, increase the energy consumption of train operation, and even cause rail breakage in serious cases, endangering driving safety. Therefore, how to efficiently and safely repair the worn surface of rails online and improve the service life of rails has become one of the key issues in railway line maintenance. [0003] At present, the main on-line repair methods of rails are grinding and welding. Among them, the rail grin...

AI Technical Summary

Problems solved by technology

The disadvantage of this laser processing device is that it does not combine the data of the worn part of the rail with the movement of the repairing device to form a complete data chain; in addition, the positioning accuracy of the device to be repaired is not enough, and the processing volume is large, so it cannot only repair the parts that need to be repaired. Selective repair of rails, long repair time and low repair efficiency

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