Motor with electromagnetic brake

Abstract

The invention discloses a motor with an electromagnetic brake. The motor comprises a casing, a pair of main brake mechanisms, a pair of auxiliary brake mechanisms and a driving mechanism. The drivingmechanism is arranged at one end in the casing and comprises a rotating shaft, a brake turntable, a driving stator and a driving rotor; each auxiliary brake mechanism comprises a brake pressing block,a first spring, a fixing base and an electromagnet block. Each main braking mechanism comprises a braking chuck, a sliding rod and a first annular electromagnet. According to the invention, through the electromagnetic power-on and power-off and magnetic force change, brake chucks, brake pressing blocks and brake pressing rings effectively carry out bidirectional or multidirectional comprehensivefriction brake on the brake chucks; the braking of the motor brake turntable in the light braking state and the heavy braking state is achieved, the abrasion to a braking disc when hard braking is conducted through magnetic force changes in traditional heavy braking operation is avoided, the service life of the brake turntable is prolonged, and the motor is suitable for popularization.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor with an electromagnetic brake. Background technique [0002] At present, electric motors are a common driving device and are widely used in various electric devices. The electromagnetic brake motor is a kind of motor in which the DC disc brake is installed on the end cover of the non-shaft extension end of the motor. When the brake motor is connected to the power supply, the brake also works at the same time. Due to the action of electromagnetic attraction, the electromagnet attracts the armature and compresses the spring, the brake disc is disengaged from the end cover of the armature, and the motor starts to run. When the power is cut off, the brake electromagnet loses its magnetic attraction, and the spring pushes the armature to press the brake disc. Under the action of friction torque, the motor stops running immediately. [0003] In the patent application publication number...

AI Technical Summary

Problems solved by technology

But it has the following shortcoming: in the above-mentioned application, it has only been explained that the braking of the automobile under the braking state, but because the automobile has two braking states of light braking and heavy braking when braking, and the brake disc will not only contact with the heavy braking under the heavy braking state. Severe friction occurs on the turntable, causing wear of the brake disc, reducing the service life of the brake disc, and easily causing incomplete braking and unstable braking. Stable braking. In the above application, the braking motor drives the actuator to apply thrust to the brake disc to generate braking. In the power-off state of parking, the braking of the locked rotating shaft cannot be achieved. Therefore, the car When parking on a slope, the car will slide due to the driver not pulling the handbrake, which cannot guarantee the safety of the car when parking

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