An electromagnetic heating temperature control device for the following wheel pairs in a low temperature environment

Abstract

The invention relates to an electromagnetic heating temperature control device for a train wheel in a low-temperature environment. The electromagnetic heating temperature control device is characterized by comprising an eddy current induction detector (5), an electromagnetic heating temperature control actuator (1), an excitation power supply (2) and an electromagnetic heater, wherein the electromagnetic heater comprises a shaft type electromagnetic heater (3) and a disc type electromagnetic heater (4); the shaft type electromagnetic heater (3) is arranged above a wheel shaft in a non-contactmanner; the disc type electromagnetic heater (4) is arranged on one side of the wheel surface of the wheel in a non-contact manner; and the electromagnetic heating temperature control actuator (1) sends a command to the excitation power supply (2), and the excitation power supply (2) controls the shaft type electromagnetic heater (3) and the disc type electromagnetic heater (4) to carry out electromagnetic heating on the wheel shaft and the wheel according to the received command respectively. Compared with the prior art, the device has the advantages of being simple in structure, high in adaptability, accurate and reliable in control, wide in application range and the like.

Description

technical field [0001] The invention relates to the field of train operation safety guarantee equipment, in particular to an electromagnetic heating temperature control device for lower wheel pairs in a low temperature environment. Background technique [0002] The number of trains running in low-temperature areas in my country is increasing, and it is facing the test of vehicle operation safety in low-temperature environments. According to the statistics of my country's heating regulations, the extreme minimum temperature in some areas and in history, the extreme temperature is -53.3 ℃ ~ 46.4 ℃, and the lowest temperature in 15 provinces and municipalities in the country is lower than -20 ℃. The mechanical properties of steel wheel sets at low temperature are different from those at normal temperature, which causes the yield strength, ultimate strength and impact toughness of steel materials to decrease, which makes the failure strength of steel components, the failure sect...

AI Technical Summary

Problems solved by technology

[0007] At present, the heating method of steel components at home and abroad is still generally heated by electric heating coil (resistance wire), and the heat is transferred to the object through contact conduction. One of the disadvantages is that only the heat close to the surface of the object is transferred to the material, and the heat on the outside is large. Part of it is lost to the air, there is heat conduction loss, low efficiency, and causes the temperature of surrounding components or the environment to rise; the second is the low power density, in some places that require deep internal, uniform and stable temperature, and can control the temperature heating according to environmental conditions The most important thing is that it is difficult to achieve contact heating for high-speed rotating wheels

Another way to heat electrical appliances and equipment is to set up a closed box and heat it with an infrared heating device, which is useless for high-speed rotating wheel sets

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