A movable cooling device for spraying air after rail head heating

Abstract

The invention discloses a movable air blasting and cooling device for a heated steel rail head, and relates to the field of air blasting and cooling equipment. A plurality of air inlet nozzles are distributed on the top face of a front end air bellow, the top face of a middle end air bellow and the top face of a rear end air bellow. Air bellow cover plates are arranged on the front end air bellow, the middle end air bellow and the rear end air bellow. The middle end air bellow is connected with the rear end air bellow through a connecting rotating device. A supporting guiding wheel is arranged on the rear end face of the rear end air bellow. An installing frame is fixed to the rear end of the rear end air bellow through a connecting plate on the top face of the rear end air bellow. The installing frame is fixedly provided with a thermodetector and a sprayer. The increasing of the distance between the lower surface of an air bellow body and the tread of a steel rail due to bending and hanging down of the heated steel rail head can be reduced through connected rotation structures, the cooling speed of the steel rail head is further stabilized and increased, and the rail head hardening effect is improved. The dead load of the device is reduced, the load of a lead screw of a quenching machine tool is reduced, the service life of rail pieces is prolonged, and the requirement of the turnout rail piece market is better met.

Description

[0001] Technical field: [0002] The invention relates to a movable type rail head heated jet air cooling device, which belongs to the technical field of jet air cooling equipment. [0003] Background technique: [0004] Air spray cooling has the advantages of uniform cooling, small parameter adjustable range, clean working environment, strong resistance to peeling damage on the surface of the rail after cooling, and is not easy to produce abnormal structures. Cooling The effective cooling distance is small, and the air jet cooling device used in actual production is rigidly and fixedly connected to the machine tool as a whole, which leads to a gradual increase in the cooling distance of the heated parabolic curved rail when it enters the bottom of the air jet cooling device. The cooling rate gradually decreases, which has an adverse effect on increasing the hardness of the rail and the depth of the hardened layer. [0005] For a long time, after the rail head is heated, the w...

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Problems solved by technology

[0004] Air spray cooling has the advantages of uniform cooling, small parameter adjustable range, clean working environment, strong resistance to peeling damage on the surface of the rail after cooling, and is not easy to produce abnormal structures. Cooling The effective cooling distance is small, and the air jet cooling device used in actual production is rigidly and fixedly connected to the machine tool as a whole, which leads to a gradual increase in the cooling distance of the heated parabolic curved rail when it enters the bottom of the air jet cooling device. The cooling rate gradually decreases, which has an adverse effect on increasing the hardness of the rail and the depth of the hardened layer

[0005] For a long time, after the rail head is heated, the wind blowing cooling air box is used to cool the heated rail head by connecting the fixed rigid bracket with the quenching machine tool. The increase of the distance between the lower surface will significantly reduce the cooling rate of the rail head, which is not conducive to the quenching and hardening of the rail head

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