Motor train unit traction motor

A technology for traction motors and EMUs, applied to electric components, electromechanical devices, electrical components, etc., can solve the problems that the ventilation structure is not suitable for intercity EMUs, increase ventilation and heat dissipation efficiency, prolong the life of the motor insulation system, and reduce maintenance cost effect

Active Publication Date: 2021-03-12
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the problem that the ventilation structure of the existing self-ventilating traction motor is not suitable for intercity EMUs, and provides a traction motor for EMUs in order to adapt to the trend of extending the maintenance period of the EMU and reducing the maintenance cost

Method used

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  • Motor train unit traction motor
  • Motor train unit traction motor
  • Motor train unit traction motor

Examples

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Embodiment Construction

[0029] A traction motor for an EMU, comprising a barrel-shaped machine base 1 (that is, the transmission end of the machine base is open and the non-drive end is not open), the stator core 2 is shrink-fitted in the machine base 1, and the rotor 3 is installed on the rotor 3. The fan 4 at the transmission end of the shaft, and the end cover 5 at the transmission end; the air inlet is opened on the top of the non-transmission end of the frame 1, the air outlet is opened on the side of the end cover 5 of the transmission end, and the rotor 3 is punched with uniform holes in the circumferential direction of the core yoke. Ventilation holes in the cloth; the stator core 2 is punched with evenly distributed ventilation holes in the circumferential direction of the yoke. Such as Figure 4 As shown, the stator core 2 is shrunk into the base 1, and the top of the non-drive end of the base 1 is provided with an air inlet. The internal air path consists of three parts: stator core air p...

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Abstract

The invention relates to a traction motor, in particular to a motor train unit traction motor. The problem that a ventilation structure of an existing self-ventilation traction motor is not suitable for an intercity motor train unit is solved. The traction motor is provided with a three-way ventilation structure. The motor adopts a split type junction box, and the three-phase cable is detachable under the condition that the cable gland is free of disassembly. High-capacity convex oil drainage cavities are formed in the two ends of the motor, and the service life of the bearing can be greatly prolonged under the normal grease supplementing condition. A compact sensor support with a detection window is arranged at the non-transmission end of the motor, the installation gap between a sensor probe and a speed measuring gear is convenient to check, an inner sinking type installation hole is adopted, an inner sinking type protective cover plate is matched, the axial assembly size of the sensor support is shortened, and the maintenance operation space of the non-transmission end of the motor is increased. Dust removal holes and stepped protective cover plates are arranged at the bottoms of the transmission end and the non-transmission end of the base to prevent water accumulation in the motor and timely remove foreign matters in the motor.

Description

technical field [0001] The invention relates to a traction motor, in particular to a traction motor for an EMU. Background technique [0002] Intercity EMU is a fast passenger rail transit mode between cities. The development space prospect of intercity EMU is getting wider and wider. [0003] Due to the structure of the intercity EMU, the line ramp and the quality limitations of the inverter power supply, it is determined that the traction motor must have the characteristics of high power density, high temperature rise margin, and easy maintenance. At present, the traction motors of intercity EMUs adopt two structural forms: forced ventilation and self-ventilation. Considering the advantages of small weight and simple structural arrangement, self-ventilated motors will become the mainstream direction in the future. Since the cooling effect of self-ventilated motors is worse than that of forced ventilation, the design of its ventilation structure is particularly important...

Claims

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Application Information

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IPC IPC(8): H02K9/06H02K1/20H02K1/32H02K5/04H02K5/10H02K5/16H02K5/20H02K5/22H02K11/21H02K11/25
CPCH02K9/06H02K1/20H02K1/32H02K5/225H02K5/04H02K5/10H02K5/20H02K5/161H02K11/21H02K11/25
Inventor 李广李世杰张婷赵宇坤郭岚岚
Owner CRRC YONGJI ELECTRIC CO LTD
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