A brake is a device that has the function of decelerating, stopping or maintaining a stopped state of moving parts (or moving machinery). It is a mechanical part that stops or slows down the moving parts in the machine. Commonly known as brakes and brakes. The brake is mainly composed of frame, brake parts and control device. Some brakes are also equipped with automatic adjustment devices for brake clearance. In order to reduce the braking torque and structural size, the brake is usually installed on the high-speed shaft of the equipment. However, large equipment with higher safety requirements (such as mine hoists, elevators, etc.) should be installed on the low-speed shaft close to the working part of the equipment. superior.