Permanent magnet brushless direct current motor

Abstract

The invention belongs to the technical field of motors, and particularly relates to a permanent magnet brushless direct current motor. The permanent magnet brushless direct current motor comprises a motor shell, wherein a rotor assembly is arranged in the motor shell and arranged outside a rotating shaft in a sleeving mode to drive the rotating shaft to rotate around the axis of the rotating shaft; a sliding groove cavity is formed in the lower end face of the motor shell, and mounting plates are arranged on the two sides of the sliding cavity; a T-shaped sliding groove is formed in the bottomend face of the mounting plate, and a plurality of connecting holes are formed in the mounting plate; a fixed base is slidably inserted into the sliding cavity, and the upper end faces of the two sides of the fixed base make sliding contact with the lower surface of the mounting plate; I-shaped sliding strips are arranged on the upper end faces of the two sides of the fixed base, and the upper ends of the I-shaped sliding strips are inserted into the T-shaped sliding groove in a sliding mode; a damping cavity is formed in the fixed base, and a damping spring is arranged in the damping cavityin the vertical direction; an elastic buffer column is inserted into the damping spring; the fixed base is made of a closed-cell foamed aluminum material; and the damping spring arranged in the fixedbase can play a role in buffering and damping the brushless direct current motor.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a permanent magnet brushless DC motor. Background technique [0002] The permanent magnet brushless DC motor system is an electrical transmission control system with the motor as the control object, the controller as the core, and the power electronic power conversion device as the actuator. With the development of motor technology, control theory, digital pulse width modulation technology, new With the advancement of material technology, microelectronics technology and modern control technology, the servo system has experienced the development process from stepping servo to DC servo, and then to the permanent magnet brushless motor servo system. It has become the mainstream direction of motor control technology. With the increase in demand, the performance and service life requirements of permanent magnet brushless motors are also getting higher and higher. [0003] However, the...

AI Technical Summary

Problems solved by technology

[0003] However, the biggest disadvantage of the existing permanent magnet brushless DC motor is that it is difficult to use in an environment with corrosiveness and high vibration frequency. When the motor needs to be repaired, because the motor has been used for a long time and rusted and bonded to the connected parts, it is difficult to quickly repair and replace the motor. At the same time, the service life of the brushless DC motor is easily affected due to the high vibration frequency.

Images