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Method for placing under-wedge pad strip on rotor coil of large motor

A technology of under-wedge spacers and rotor coils is applied to the field of placing under-wedge spacers on the rotor coils of large motors, which can solve the problems of not easy to tap, slow motor production work efficiency, large copper slot wedge resistance, etc. The effect of resistance and easy operation

Active Publication Date: 2013-12-18
上海电气集团上海电机厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the copper slot wedge has a lot of resistance during the process of knocking in, and it is not easy to be tightened, so it is time-consuming and laborious, and the production efficiency of the motor is slow.

Method used

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  • Method for placing under-wedge pad strip on rotor coil of large motor
  • Method for placing under-wedge pad strip on rotor coil of large motor

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Embodiment Construction

[0016] In order to better understand the technical solution of the present invention, a detailed description will be given below through specific embodiments and in conjunction with the accompanying drawings.

[0017] The method for placing under-wedge pads on the rotor coil of a large-scale motor of the present invention, under-wedge pads is composed of three sections with the same length, and the method of the present invention comprises the following steps:

[0018] Steps for preliminary installation of copper slot wedges (see figure 1 ), first push the copper slot wedge to the middle of the coil slot, so that the front end of the copper slot wedge is located at the center of the length of the rotor core, and then use the support bolt 1 to lock the rotor coil 3 through the dovetail block 2, and the locked position It should be close to the copper slot wedge; the tightening torque when tightening the rotor coil 3 is 70Nm, and a layer of bakelite pad 4 should be placed at the...

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Abstract

The invention discloses a method for placing an under-wedge pad strip on a rotor coil of a large motor. The under-wedge pad strip consists of three sections with the same length. The method comprises the following steps of preliminarily installing a copper slot wedge, determining the thickness of the under-wedge pad strip, processing the thickness and size of the middle section of the under-wedge pad strip, formally installing the copper slot wedge, and placing under-wedge pad strips on both sides. The method for placing the under-wedge pad strip on the rotor coil of the large motor disclosed by the invention has the advantages of convenience in operation, and simplicity and easiness in implementation, and the resistance for placing the under-wedge pad strip can be reduced.

Description

technical field [0001] The invention relates to a production method of a motor, in particular to a method for disposing under-wedge pads on the rotor coil of a large motor. Background technique [0002] In the production process of the motor, especially in the process of embedding the rotor coil, it is usually necessary to place the slot bottom pad in the coil slot first, and then place the copper slot wedge in the coil slot after the rotor coil is embedded in the coil slot to align the coil. To seal the slot, it is also necessary to place a pad under the wedge between the top turn of the rotor coil and the copper slot wedge, so that the rotor coil is fixed in the coil slot without loosening. [0003] In the prior art, the copper slot wedges of the rotor and the under-wedge pads are generally segmented, so that the under-wedge pads are more convenient to arrange and place. And the length of the rotor iron core of this large motor is 1300mm, and its rotor copper slot wedge s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/487H02K15/02
Inventor 滕文江
Owner 上海电气集团上海电机厂有限公司