Optical device for hardening steel rail by using high-power semiconductor laser in running of train

Abstract

The invention relates to the field of optical devices for hardening rails, in particular to an optical device for hardening the steel rail by using high-power semiconductor laser in running of a train. The optical device comprises semiconductor laser diode stacks, a polarization coupling prism, a wavelength coupling prism, a planar reflector, a symmetric ladder lens, a light beam compression lens, a slow-axis collimating lens, an optical working lens assembly and a laser head, wherein through the plurality of semiconductor laser diode stacks with fast-axis collimating lens, the light is coupled into a beam of light and output by using a wavelength coupling principle and a polarization coupling principle. The laser beam is led into the laser head so as to obtain ideal light spots required for hardening the steel rail by laser through light path design of a complete optical system. The device has the advantages of high energy utilization ratio, compact structure, convenient carrying and field application, high controllability, easy operation, low operation and maintenance cost, long service life, uniform energy distribution of light beam, no need of measures such as phosphorization, blackening and the like of the surface of the steel rail and capability of preventing negative effect brought by spraying an absorption layer.

Description

technical field [0001] The invention relates to the field of optical devices for hardening rails, in particular to an optical device for hardening rails by using high-power semiconductor lasers during train operation. Background technique [0002] The railway is an important transportation facility related to the national economy and the people's livelihood, and the steel rail is an important part of the railway track, so the quality of the steel rail is very important. In practical applications, with the increase of train speed, transport capacity and axle load, the friction of the wheels on the rail surface and side surface is very strong, the wear is very serious, and the rate of rail wear and failure is getting faster and faster. The service life and safety of steel rails are very unfavorable. The direct cost of replacing and repairing damaged rails in my country reaches hundreds of millions of RMB each year. In order to improve its wear resistance, we harden the surface ...

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Problems solved by technology

[0003] In view of the above situation, in order to solve the defects of the prior art, the present invention provides an optical device that uses high-power semiconductor laser to harden the rail during train operation, which can effectively solve the problems of short service life and poor wear resistance of the rail

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