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Totally enclosed main motor

A traction motor, closed-type technology, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of large-scale traction motors, increased noise, etc.

Active Publication Date: 2016-09-28
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a measure, new technical problems such as increased noise due to an increase in the air volume and increased size of the traction motor due to the installation of a cooler will arise.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment approach

[0024] figure 1 It is a longitudinal sectional view of a fully enclosed traction motor according to an embodiment of the present invention. figure 2 yes figure 1 A perspective cutaway view of the cooling fan shown.

[0025] A fully enclosed traction motor (hereinafter referred to as "traction motor") 100 is configured to include: a stator 10 composed of a stator core 3 and a stator coil 8; a rotor 7 disposed inside the stator 10; a frame 2, The frame 2 surrounds the stator 10 and the rotor 7 ; the bracket 1 is arranged on the driving side 60 of the frame 2 ;

[0026] An air duct 21 and an air inlet 20 communicating with an air duct 22 of the frame 2 are formed in the bracket 1 . The suction port 20 is provided along the circumferential direction. In addition, the suction port 20 is provided in a region where the guide 33 is projected toward the bracket 1 .

[0027] An air passage 22 located on the outer peripheral side of the stator core 3 is formed in the frame 2 . A p...

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PUM

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Abstract

A main motor (100) comprises a stator (10), a rotor core (4), an iron core clamp (5), a cooling fan (30), a rotor (7), a frame (2), a bracket (1), and a bearing section (50). The cooling fan (30) comprises: a main plate (31) that partitions the inside and outside of the totally enclosed main motor (100); a plurality of blades (32) provided in the rotation direction of the rotor (7), on the bracket (1) side of the cooling fan (30); and a guide (33) provided on the bracket (1) side of the blades (32). An air intake port (20) is provided in the bracket (1), inside an area formed by projecting the guide (33) on to the bracket (1). The guide (33) is formed such that the air taken in from the air intake port (20) is guided to a rotor shaft (9).

Description

technical field [0001] The invention relates to a fully enclosed traction motor for driving railcars. Background technique [0002] Generally speaking, from the viewpoint of reducing maintenance, fully enclosed traction motors (fully enclosed traction motors) are often used as rotating electric machines for driving railcars. The above-mentioned fully enclosed traction motor mainly includes a cylindrical frame, a bracket that blocks both ends of the frame, a rotor shaft supported by a bearing on the bracket, a rotor core on the rotor shaft, a stator core fixed on the frame, and an installation The stator coil on the stator core is configured to seal the air inside the motor. [0003] In the fully-enclosed traction motor constructed as described above, due to the sealed structure inside the motor, it is impossible to introduce external air into the motor to cool it. Therefore, in order to dissipate the heat inside the motor to the outside, it is necessary Measures such as in...

Claims

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Application Information

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IPC IPC(8): H02K9/06H02K5/128
CPCH02K5/10H02K9/06H02K5/16H02K5/207H02K9/02H02K9/00H02K9/16H02K9/04H02K9/12
Inventor 金子健太
Owner MITSUBISHI ELECTRIC CORP
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