A permanent magnet motor system

Abstract

This application relates to the field of motor heat dissipation, in particular to a permanent magnet motor system, which includes a permanent magnet motor body, a temperature detection module, a cooling module, a PLC control module, and a switch module; the temperature detection module includes a The heat conduction shell on the bearing of the magneto body and the temperature sensor are connected to the PLC control module; the wind cooling module includes a fan arranged in the cooling chamber, and a switch module is arranged between the fan and the output shaft; the return module includes a fan arranged in the drive chamber Drain tubes on the wall. The application has the effect: the PLC control module controls the power on and off of the electromagnet on the suction piece. There is a reset part between the suction piece and the suction block. When the bearing temperature is lower than the preset temperature, the PLC control module controls the electromagnet to power off. The reset part is used to reset the suction block to realize the automatic connection between the rotating shaft and the output shaft. disconnect.

Description

technical field [0001] The present application relates to the field of motor heat dissipation, in particular to a permanent magnet motor system. Background technique [0002] With the development of power electronics technology, servo motors have been widely used in all walks of life. Its working principle is to convert the received electrical signal into angular displacement or angular velocity output on the servo motor shaft. It is easy to control, small in size and light in weight. , the output power and torque are large, and it is convenient to adjust the speed. It has been widely used in recent years, but because the motor needs to rotate at high speed during output, the temperature of the bearing will rise rapidly. If it is a servo motor, the encoder of the servo motor will also be affected by heat conduction. And heat up, causing damage to bearings and encoders. [0003] In the related technology, the Chinese utility model patent with the application number 201721188...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that: during the general use of the motor, the bearing temperature of the motor generally cannot exceed 85°C, but in the actual working process, the bearing temperature is generally above 60°C, especially in summer, Bearing temperature often exceeds the specified temperature limit, otherwise it is likely to cause damage to the bearing. In this application, only relying on the heat dissipation holes on the end cover to dissipate heat from the high temperature bearing, the heat dissipation effect is obviously insufficient

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