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A Method for On-Line Repair of Commutator After Spark Fault of DC Motor

A DC motor and commutator technology, applied in the field of metal processing, can solve problems such as commutator surface burns, difficult to solve spark faults, commutator surface finish and concentricity cannot be guaranteed, and achieve the effect of personal safety guarantee

Active Publication Date: 2021-06-22
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After this method, the surface finish and concentricity of the commutator cannot be guaranteed, and it is difficult to solve the spark fault when the commutator surface is severely burnt or a ring fire fault occurs

Method used

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  • A Method for On-Line Repair of Commutator After Spark Fault of DC Motor
  • A Method for On-Line Repair of Commutator After Spark Fault of DC Motor
  • A Method for On-Line Repair of Commutator After Spark Fault of DC Motor

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with accompanying drawing:

[0032] Explanation: The following devices and tools are used in the examples:

[0033] Turning device: a simple turning tool holder composed of a carriage 1, a tool holder 2 connected to the carriage 1, and a tool 3 on the carriage 2; a support frame 4 is connected to the lower end surface of the carriage 1 by bolts; Frame 4 is fixedly connected with the site by means of bolts or welding.

[0034] Saw-toothed scraper: consists of splint 1 5, splint 2 6, saw blade 7 between splint 1 5 and splint 2 6, and a handle 8 that is welded or bolted to splint 1 5 or / and splint 2 6.

[0035] Grinder: consists of a fixed plate 9, a grinding layer 10 connected to the fixed plate 9 by embedding or bonding, and a handle 11 connected to the upper surface of the fixed plate 9 by welding or bolts; the working surface of the grinding layer 10 The shape matches the shape of the workpiece pr...

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Abstract

A method for on-line repairing of the commutator after a spark fault of a DC motor: use a millivolt meter to find the zero potential point when the motor is stopped; fix the turning device for processing at the processing site; turn the entire surface of the commutator under electrification Processing until the accuracy requirements are met; cleaning the falling objects in the commutator groove when the motor is stopped; thinning the mica sheet with a sawtooth scraper when the motor is stopped; grinding the surface of the commutator in a charged state; dismantling The processing chip device fixed on the site; the motor runs without load under the rated voltage state; it is put into normal operation. The present invention finds the zero potential point of the commutator, and under the conditions of electrification of the motor and human-machine insulation, after turning and grinding the surface of the motor commutator online, not only can the surface finish of the processed commutator meet the requirements, but also make the motor The service life of the utility model can be increased from about half a year to more than two years, and personal safety is guaranteed.

Description

technical field [0001] The invention relates to a metal processing method, which specifically belongs to an online repair method for a DC motor spark fault, and is especially suitable for an online commutator processing method for a large and medium-sized DC motor spark abnormal fault. Background technique [0002] In industrial enterprises, with the wide application of AC frequency conversion technology, more and more large and medium-sized motors, especially the main production line of steel rolling, began to use AC variable frequency speed regulation motors that are easy to maintain. However, due to the advantages of good starting performance and wide and smooth speed regulation characteristics of DC motors, they occupy a certain position in many occasions with high transmission performance requirements. They are still widely used in steel rolling production enterprises, and there are still many large and medium-sized DC motors in steel rolling production lines. The reali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R43/14H02K15/00
CPCH01R43/14H02K15/00
Inventor 陈光全李继伟陈俭张子立胡文华罗明辉芦威刘旭刚陈志平
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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