Friction dry type power-losing electromagnetic brake

Abstract

The invention discloses a friction dry type power-losing electromagnetic brake comprising magnet yoke components, an armature, a friction plate and a motor driving shaft, wherein elastic devices are symmetrically arranged at the upper part and the lower part of the outer side of the motor driving shaft, the magnet yoke components are arranged outside the two elastic devices, magnet exciting coilsare arranged in the magnet yoke components, the left end of each magnet yoke component is provided with a spline housing on the motor driving shaft, the friction plate is arranged outside the left endof the spline housing, the left end of a friction block is provided with a fixed member on the motor driving shaft, and the friction plate is fixedly connected with the spline housing. In operation of the friction dry type power-losing electromagnetic brake, when the magnet exciting coils are in power failure, due to the action of a spring, a support rod pushes the armature to the friction plate,so that the armature and the friction plate extrude and rub with each other, thus being favorable for the friction plate to slow down to stop rotation, and being favorable for rapid braking of the brake; the equipment is simple and compact in structure, has functions of low heat radiation and low noise, can effectively reduce the loss of the friction plate and can prolong the service life of thefriction plate.

Description

technical field [0001] The invention relates to the technical field of mechanical brakes, in particular to a friction dry type de-energized electromagnetic brake. Background technique [0002] Electromagnetic power-off brakes are widely used in metallurgy, construction, chemical industry, food, machine tools, printing, packaging and other machinery, and in occasions such as braking when power is off (prevention of danger). This kind of brake has the advantages of compact structure, convenient installation, wide adaptability, low noise, high working frequency, sensitive action, reliable braking, etc. It is an ideal automatic actuator. [0003] At present, the existing frictional dry-type de-energized electromagnetic brakes in our country adopt multi-spring circular arrangement in their braking mechanisms, and the springs are placed in the yoke body. The transmission of the braking torque adopts the meshing structure of the inner and outer gears of the spur column. The frict...

AI Technical Summary

Problems solved by technology

As a result, the working surfaces of multiple compression springs are in direct contact with the plane of the armature plate, resulting in poor uniformity of the working gap between the armature plate and the friction plate after adjustment, resulting in increased wear on one side of the friction plate, which has long caused the brake The effect becomes worse, which affects the service life of the friction plate

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