A wheel hub motor directly driving the wheel of an urban rail train
A wheel hub motor and urban rail technology, which is applied to the transmission device driven by the motor, electric components, electromechanical devices, etc., can solve the problems of reduction gear loss, large volume, and inability to reduce weight, so as to eliminate magnetic loss and increase effective power Effect
Active Publication Date: 2021-12-21
CHENGDU UNIVERSITY OF TECHNOLOGY
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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.
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[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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The invention discloses a hub motor for directly driving the wheel of an urban rail motor vehicle. A radial plane air gap perpendicular to the rotation axis of the rotor disc is formed between the rotor disc and the stator armature disc. When the motor vehicle is running due to the vibration of the vehicle, when the rotor disk and the stator armature disk produce radial displacement, the thickness of the axial air gap between the stator and rotor of the motor will not change, and the rotor magnetic pole disk can still surround and parallel to the stator armature disk. The axis of the pivot disk rotates to keep the hub motor working normally; and a pair of magnetic suspension bearing mechanisms are used to instantly adapt to the displacement change between the rotor disk and the stator armature disk, and the magnetic suspension bearing is controlled by the magnetic suspension bearing gap adjustment component. The gap between the inner and outer magnetic steel sleeves is adjusted instantaneously to continue to support the rotor disk to continue to run around the axis parallel to the stator armature disk, and the hub motor can still work normally, continuously, smoothly and safely. In addition, it is designed with special large-section special-shaped teeth and grooves, which can be embedded with coil winding wires with large current-carrying capacity.
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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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