Rapid online detection and performance recovery device for steel rails

Abstract

The invention discloses a rapid online detection and performance recovery device for steel rails. The rapid online detection and performance recovery device comprises a data acquisition system, a master control system, a rapid heat treatment system and a steel rail grinding system. The master control system is connected with a locomotive control system, the data acquisition system, the rapid heat treatment system and the steel rail grinding system. The data acquisition system comprises a main horizontal contour photoelectric sensor, an edge contour photoelectric sensor, a hardness gauge A, an auxiliary horizontal contour photoelectric sensor and a hardness gauge B. The steel rail grinding system comprises a pre-grinding machine, a grinding machine, a rough polishing machine and a fine polishing machine. The rapid heat treatment system comprises a flat plate type quenching induction coil, a water gun, a flat-plate-type tempering induction coil and a water tank. By carrying out rapid grinding and polishing for the surface deformation of the steel rails, the hardness, strength, smoothness and glossiness of the steel rails are recovered; by adopting rapid induction heating quenching and tempering, the softening effect that the surface hardness is reduced due to cyclic loading and repeated elasticoplastic deformation of rail treads is overcome, and maintenance efficiency is high.

Description

technical field [0001] The invention belongs to railway rail wear and repair technology, in particular to a rapid on-line detection and recovery device for rails. Background technique [0002] Steel rails are exclusive roads for rail vehicles. The upper surface of the rails is a key working part, called the "tread". When the wheels pass by, they are subjected to localized large pressure, shear force and sliding-rolling wear, and are subjected to complex fatigue loads. In particular, so-called "corrugation" causes local wear and microplastic deformation of the surface. Moreover, it has been exposed to the atmospheric environment for many years, subjected to atmospheric corrosion and corrosion of dew, fog, salt spray, and rainwater. At the same time, it has to withstand slag, sand, coal dust, and other harsher corrosive substances in many special road sections such as stations and freight yards. Erosion and the harsh service environment will cause local damage to the tread su...

AI Technical Summary

Problems solved by technology

[0004] At present, methods such as manual grinding and track replacement are generally used. Not only the maintenance efficiency is low, the cost is high, and the waste is large, but also seriously affects the operation of the train.

The grinding system under development does not have the function of rapid heat treatment, cannot restore the hardness and strength of the rail, and cannot solve the complete repair of the rail function

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