Friction brakes use friction torque between friction elements to achieve braking. In order to reduce the braking torque and reduce the size of the brake, it is usually installed on the input shaft of the reducer installed on the high-speed shaft of the machine; some safety brakes are installed on the low-speed shaft to prevent the transmission mechanism from interrupting the shaft. Falling of items.
The brake is mainly composed of brake frame, friction element and brake release. When designing and selecting a brake, it is required to have a large braking torque, sensitive power, good reliability, flexible and simple operation, and long life of friction elements.
According to the working state, the brake can be divided into normally closed and normally open. Normally closed brakes are always in the closed state by the elastic force of the spring or the action of gravity and are only released when the machine is running, while the normally open brakes are the opposite of the normally closed brakes.
According to the working principle, the brake can be divided into mechanical type and electromagnetic type. Mechanical brakes include external holding brakes, internal shoe brakes, band brakes and disc brakes. Most of the brakes have been standardized and produced by specialized factories.
