Rocker arm applying permanent magnet motor

Abstract

The invention discloses a rocker arm applying a permanent magnet motor, and relates to the technical field of rocker arms of coal mining machines. The main points of the technical scheme are that therocker arm comprises a rocker arm body; a cutting part, arranged at one end of the rocker arm body; a connecting part, arranged at the end, deviating from the cutting part, of the rocker arm body, thecutting part and the connecting part being located on the two opposite sides of the rocker arm body, and the connecting part being used for being connected with a coal mining machine; a cutting roller, sleeved outside the cutting roller, and the cutting roller and the cutting part being rotationally connected together; and a permanent magnet motor, arranged in the cutting part. A rotor of the permanent magnet motor directly drives the cutting roller to rotate, the permanent magnet motor can directly output a low rotating speed, the rotor of the permanent magnet motor directly drives the cutting roller, a gear speed reduction structure is not arranged, the production cost is reduced, the gear speed reduction structure is not arranged, and the maintenance frequency and the maintenance difficulty are reduced; maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of the rocker arm of a coal mining machine, more specifically, it relates to a rocker arm using a permanent magnet motor. Background technique [0002] The rocker arm is an important component structure of the coal shearer. There is a cutting drum on the rocker arm, and the coal mining operation is carried out through the cutting drum. During the coal mining process, the cutting drum needs low speed and high torque, so the existing Most of the rocker arms use a three-phase asynchronous motor to transmit power to the cutting drum. [0003] Due to the high output speed of the three-phase asynchronous motor, in order to meet the low speed requirements of the cutting drum, multiple sets of deceleration devices need to be installed in the rocker arm. Usually, multi-stage gear deceleration and planetary gear deceleration are used to achieve deceleration. To provide the required speed for the cutting drum. Howeve...

AI Technical Summary

Problems solved by technology

However, the cost of multi-stage reduction gears and planetary gears is high and failures often occur during use, and the maintenance is cumbersome and costly

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