Synchronous motor slip ring surface online repairing device and repairing method

Abstract

The invention discloses a synchronous motor slip ring surface online repairing device and method, and relates to the technical field of synchronous motor repairing. The repairing device comprises a fixed support, a millstone mounting frame, a millstone, a millstone pressing-in unit and a spring. The fixed support is connected with a brush rod; the millstone mounting frame is mounted on the fixed support; the millstone is mounted on the millstone mounting frame in a penetrating manner; the millstone mounting frame is hinged to the millstone pressing-in unit; the spring is connected between the millstone pressing-in unit and the millstone mounting frame; and the millstone pressing-in unit presses the end face of the millstone on the surface of a slip ring through the spring. During repairing, the repairing device instead of a brush holder of a synchronous motor is installed on the brush rod, the millstone pressing-in unit presses the millstone on the surface of the slip ring through the tension of the spring, the synchronous motor is started, the millstone can polish the surface of the slip ring, and online repairing is achieved. The problem of long consumed time for surface repair of the slip ring of the synchronous motor of the existing finishing mill is solved.

Description

technical field [0001] The invention relates to the technical field of synchronous motor repair, in particular to an online repair device and repair method mainly used for the slip ring surface of a synchronous large motor in the iron and steel industry. Background technique [0002] During the use of the slip ring of the synchronous motor of the high-end finishing mill, due to the chipping of the carbon brush and insufficient mechanical centering accuracy, the oxide film of the slip ring was not well established, and there was a groove problem in long-term operation. After increasing production and speed, the carbon brush appeared longer The ignition phenomenon of the flame tongue, after the power outage, entered the internal inspection of the finishing mill, and found that the slip ring had micro-linear grooves, many small air holes, and small raised spots, the surface of the slip ring was not smooth, and when the motor was running at high speed, carbon The brush vibrates ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an online repair device and repair method for the slip ring surface of a synchronous motor. This device and repair method can solve the time-consuming problem of the existing finishing mill synchronous motor slip ring surface repair

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