Motor applied to oil field

Abstract

The invention relates to the technical field of motors, and discloses a motor applied to an oil field. The motor comprises a motor body. The output shaft of the motor body is in fixed sleeve joint with a collecting ring. A carbon brush is slidably arranged on the surface of the collecting ring. A through hole is arranged in the casing of the motor body. A piston cylinder is inserted into the through hole. According to the motor applied to the oil field, the piston cylinder, a first piston, a cylinder, an iron core, a coil and a permanent magnet are arranged; as the carbon brush wears, a compression spring is continuously released, causing reduced pressure between the carbon brush and the collecting ring; an electromagnet and the permanent magnet are attracted to each other; when the electromagnet and the permanent magnet are close to each other, as the distance is shortened, the attractive force between the electromagnet and the permanent magnet is increased, so as to compensate for insufficient pressure between the carbon brush and the collecting ring due to too long release length of the compression spring; pressure balance between the carbon brush and the collecting ring is maintained; the carbon brush and the collecting ring maintain good contact; and the service life of the motor is increased.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an oil field motor. Background technique [0002] In oilfield exploitation, the electric motor is the most common machine, which provides power for various opening and transportation equipment, and the carbon brush is an important part of the electric motor. It is tightly pressed on the rotating shaft. When the motor rotates, the electric energy is transmitted to the coil through the commutator. The current carbon brushes of the motor have the following problems: [0003] 1. Most of the existing carbon brushes only rely on the spring to provide the pressing force, so that the carbon brush and the collector ring maintain a certain pressure connection, but as the carbon brush wears out, the spring is continuously released, according to Hooke's law After the spring is compressed, during the release process, the elasticity of the spring to the carbon brush will decrease with the incr...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides an electric motor for oil fields, which has the advantage of equalizing the pressure between the carbon brush and the collector ring as the carbon brush wears out, and solves the problem of the carbon brush being damaged during the use of the carbon brush. The pressure between the collector ring changes and affects the use of the motor

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