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Hub motor for directly driving urban rail bullet train wheels

A technology for in-wheel motors and urban rails, which is applied to transmission devices, electric components, and electromechanical devices driven by motors, can solve the problems of inability to reduce weight, loss of reduction gears, and huge volume, achieve safe work, eliminate magnetic loss, The effect of increasing the effective power

Active Publication Date: 2020-05-05
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this traditional driving method, due to the huge size and unreduced weight of the brushed DC motor, coupled with the loss of efficiency of the reduction gear, people hope that a hub motor that can directly drive the wheel will appear.

Method used

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  • Hub motor for directly driving urban rail bullet train wheels
  • Hub motor for directly driving urban rail bullet train wheels
  • Hub motor for directly driving urban rail bullet train wheels

Examples

Experimental program
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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. These descriptions are based on the selected motor vehicle wheel with an outer diameter of φ840mm as a model, and the design of the disc-driven hub motor. But it does not limit the application of the present invention to any other types of urban rail trains, and the matching of wheels of motor vehicles with different outer diameters. Popularization and application need to be in accordance with the technical indicators required by the train, such as: the outer diameter of the train wheel; the maximum speed of the train; the voltage of the power supply; the maximum torque required for the train to start (the total mass of the train when the train is the largest passenger load), etc. . Determine the technical parameters of...

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Abstract

The invention discloses a hub motor for directly driving urban rail bullet train wheels. A radial plane air gap perpendicular to the rotating axis of a rotor disc is formed between the rotor disc anda stator armature disc. When radial displacement is generated between the rotor disc and the stator armature disc due to vehicle vibration during operation of a bullet train, the thickness of an axialair gap between a stator and a rotor of the motor is not changed. The rotor magnetic pole disc can still rotate around the axis parallel to the stator armature disc, and normal work of the hub motoris kept. A pair of magnetic suspension bearing mechanisms is applied. The displacement change between the rotor disc and the stator armature disc can be adapted instantly. The gap between the magneticsuspension bearing inner magnetic steel sleeve and the magnetic suspension bearing outer magnetic steel sleeve is instantaneously regulated and controlled through a magnetic suspension bearing gap regulation and control assembly. The rotor disc is continuously supported to continuously operate around the axis parallel to the stator armature disc, and the hub motor can still normally, continuously, stably and safely work. In addition, special large-section special-shaped teeth and grooves are designed, and coil winding wires with very large conduction capacity can be embedded in the special-shaped teeth and grooves.

Description

technical field [0001] The invention relates to a power device for a wheel of an urban rail train, and at the same time relates to the field of a special rare-earth permanent magnet brushless DC motor. Background technique [0002] Today's urban rail trains at home and abroad are powered by DC power grids. Most of the driving methods of the EMUs use DC brushed motors to be hoisted on the vehicle bogies, and the torque from the motors can be transmitted to the wheels through the support of the wheels to the axles (designed with axle-holding bushes) and the pair of reduction gears to achieve The operation of the train. In order to ensure the smooth operation of the train and reduce vibration, a spring system mechanism is arranged between the bogie and the wheel rotating parts of the running part of the vehicle. In this traditional drive mode, due to the huge size and unreduced weight of the brushed DC motor, coupled with the loss of efficiency of the reduction gear, people h...

Claims

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Application Information

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IPC IPC(8): H02K7/00H02K29/00H02K1/27H02K1/28H02K1/16H02K3/493H02K7/09B61C9/46
CPCH02K7/006H02K29/00H02K1/2793H02K1/28H02K1/165H02K3/493H02K7/09B61C9/46H02K2201/03H02K2213/03
Inventor 荆海莲陈旭雯邹雨彤郑珺
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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