Rail vehicle wheel pair motor direct driving system

A technology for rail vehicles and wheelsets, which is applied in the direction of transmission driven by electric motors, etc., can solve the problems of reduced motor speed, size and weight restrictions, and difficulty in direct drive of asynchronous motors, and achieves improved transmission efficiency and reduced volume and mass. , The effect of energy saving effect is obvious

Active Publication Date: 2015-03-18
CHANGZHOU CHANGQING TRAFFIC TECH
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AI Technical Summary

Problems solved by technology

The direct drive method does not require a gear transmission device, but the motor speed decreases and the torque increases, the volume and weight of the motor will increase, and the impact on the track and traction motor will increase. On the car body, the motor's Strict size and weight constraints make it difficult to implement direct drives with asynchronous motors

Method used

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  • Rail vehicle wheel pair motor direct driving system
  • Rail vehicle wheel pair motor direct driving system
  • Rail vehicle wheel pair motor direct driving system

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Embodiment 1）

[0028] See figure 1 , The rail vehicle wheel-to-motor direct drive system of this embodiment is mainly composed of a drive motor 1, an elastic coupling 2 and a soft starter 3.

[0029] The driving motor 1 is mainly composed of a casing 11 , a stator 12 , a rotor 13 and a bearing assembly 14 .

[0030] The shell 11 of the drive motor 1 is made up of a support 11-1, a left end cover 11-2 and a right end cover 11-3. The left end cover 11-2 is set on the left side of the machine base 11-1 and is sealed and fixedly connected with the machine base 11-1; the right end cover 11-3 is set on the right side of the machine base 11-1 and is sealed and fixed with the machine base 11-1 connect. The middle of the left end cover 11-2 and the right end cover 11-3 are provided with left and right through circular through holes and inwardly protruding bearing mounts.

[0031] The stator 12 is composed of a stator core and a stator winding. The structure of the stator 12 is basically the same ...

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Abstract

The invention provides a rail vehicle wheel pair motor direct driving system. The system comprises a driving motor, a soft starter and two elastic couplings, and the soft starter is in controlled electrical connection with the driving motor; the driving motor is a permanent magnet synchronous motor with a hollow rotating shaft, the axle of a rail vehicle traverses through the hollow shaft of the driving motor, and then two ends of the axle are fixedly connected with a wheel pair; each of the elastic couplings comprises a driving plate, a pull rod, a rubber ball joint, a driving pin and a connecting bolt, the driving plate is connected with the pull rod through the driving pin, and the rubber ball joint is fixedly arranged in the pull rod; the elastic couplings are fixedly connected with vehicle wheels by allowing the connecting bolts to traverse through the rubber ball joints; and two ends of the rotating shaft of the driving motor are in transmission connection with the elastic couplings respectively. The rail vehicle wheel pair motor direct driving system effectively saves the cost, reduces the noise, improves the transmission efficiency and improves the curve negotiating ability of a bogie; and compared with asynchronous motors with a same capacity, the driving motor has the advantages of greatly reduced size and mass, and obvious energy saving effect.

Description

technical field [0001] The invention relates to a drive system of a rail vehicle, in particular to a rail vehicle wheel set motor direct drive system which directly drives the wheel set of the rail vehicle through a motor. Background technique [0002] The traditional urban subway vehicle driving method usually uses an asynchronous traction motor to drive the vehicle indirectly, that is, the torque generated by the asynchronous traction motor is transmitted to the vehicle wheel set through a gear transmission to drive the vehicle. Due to the use of a reduction gear transmission, the drive system has a complex structure, increased volume, increased weight, high operation and maintenance costs, high operating noise, and low transmission efficiency. Direct drive is to directly connect the motor with the axle, and the torque generated by the motor is directly transmitted to the wheel set of the vehicle without going through the gear transmission device, and the operation of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61C9/44
CPCB61C9/44
Inventor 刘建刚郭海生俞进泽华建峰候汉仲
Owner CHANGZHOU CHANGQING TRAFFIC TECH
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