Manufacturing method of disc type synchronous belt wheel motor

Abstract

The invention relates to a special motor for a locomotive of a motor train unit and a manufacturing method of a disc type synchronous belt wheel motor. The disc type 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, wherein a lead window is formed in the outer wall of the motor housing; the front end cover and the rear end cover are fixedly connected to the front end face and the rear end face of the motor housing respectively; the stator is fixed on the inner side surface of the front end cover; the rotor is fixed on the motor rotary shaft; the motor rotary shaft is supported on the front end cover and the rear end cover through a front bearing and a rear bearing; 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 manufacturing method comprises the following steps of preparation of a special clamp, rough machining, thermal treatment and accurate grinding, wherein a supporting component is arranged on the front end cover of the motor, a copper alloy hard wear-resisting layer is arranged on the surface of the supporting circle of an outer bearing of the supporting component, rough machining and laser spraying are carried out before accurate grinding, and the ultra-strong wear resistance is achieved.

Description

technical field [0001] The invention relates to a special electric motor for an EMU locomotive, which has double strict requirements on size, space and service life, and in particular relates to a manufacturing method of a disc-type 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...

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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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