Disc type titanium alloy synchronous belt wheel motor

Abstract

The invention relates to a special motor for a locomotive of a motor train unit and a disc type titanium alloy synchronous belt wheel motor. The disc type titanium alloy synchronous belt wheel motor comprises a stator, a rotor, a motor rotary shaft, a motor housing, a front end cover, a rear end cover and a synchronous belt wheel, the stator is fixed on the inner side of the front end cover, and the rotor is fixed on the motor rotary shaft. As improvement, one end face of a thrust bearing is fixed on the front end cover; the other end face of the thrust bearing is tightly attached to the outer end face of one side of an inner hole of a rotor frame; the rear end cover is provided with a bearing rear cover; the bearing rear cover is fixed on the rear end cover through a screw; the inner end of the bearing rear cover extends into a rear cover bearing hole in the rear end cover and abuts against a rear bearing; a supporting component is fixed on the front end cover through a screw; the inner end of a component adjusting ring on the supporting component extends into a front cover bearing hole in the front end cover and abuts against a front bearing; a bearing without an inner ring is arranged between the outer end of the supporting component and the synchronous belt wheel; a thick titanium alloy hard wear-resisting layer is compounded on the surface of the supporting circle of an outer bearing of the supporting component.

Description

technical field [0001] The invention relates to a special electric motor for EMU locomotives, which has double strict requirements on size, space and service life, and in particular relates to a disc-type titanium alloy synchronous pulley motor. Background technique [0002] High-speed EMUs have special strict requirements on the motor performance of the traction system, such as high torque, low noise, bending moment resistance, and efficient heat dissipation. For this reason, most developed countries in Europe and the United States use disc motors. The motors currently used have a rated power of only 0.01-3kW and a starting torque of only 1.8-2.0 times the rated torque, so their application is greatly limited. After searching the patent literature, the patent No. 94228082.2 was found for the invention patent of "disk-type external-rotating double-rotor motor", which uses the magnetic poles formed by stacking strips of equal width and different lengths to form a disc-type in...

AI Technical Summary

Problems solved by technology

Therefore, in order to allow the motor shaft to withstand the bending moment, the diameter of the motor shaft has to be doubled, which eventually leads to a series of disadvantages: the linear speed of the motor bearing is also doubled, its internal friction is doubled, and the heat generated by the internal friction is doubled Big

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