A motor with electromagnetic brake

Abstract

The invention discloses an electric motor with an electromagnetic brake, which comprises a casing, a pair of main braking mechanisms, a pair of auxiliary braking mechanisms and a driving mechanism. The driving mechanism is placed at one end inside the casing, and the driving mechanism includes a rotating shaft. , a brake turntable, a drive stator and a drive rotor; the auxiliary brake mechanism includes a brake pressure block, a spring one, a fixed seat and an electromagnet block; the main brake mechanism includes a brake chuck, a slide bar and A ring electromagnet. The invention can effectively make the brake chuck, the brake pressure block and the brake pressure ring perform two-way or multi-directional comprehensive friction braking on the brake chuck through the electromagnetic power on and off and the change of the magnetic force, and realize the Braking under the two states of light brake and heavy brake of the motor brake turntable avoids the wear of the brake disc when the traditional heavy brake operation performs hard braking through magnetic force changes, and improves the service life of the brake turntable. It is suitable for promotion .

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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