The working principle of the crane brake

Crane brake is a safety equipment to protect the crane, due to the different crane models on the market, which leads to the type of crane brake is also a lot, according to different functions, different roles, different structures, there are many equipment.
1. According to the different functions, it is divided into three kinds: speed regulation, stop use and compound type. The function of the crane speed control brake in the whole working process is to adjust the movement speed of the object. The stop brake works at the end of the working process to stop the movement of the object. Compound brakes have both the first two functions.
2. According to the structural characteristics of the brake parts of the double beam crane, it is divided into block brake, belt brake and disc brake.
3. According to the principle of action, it is divided into two kinds of brakes: normal closing type and normal opening type. The former brake is closed in the normal state, the braking force is generated by a spring or a weight, and an external force must be added to overcome the braking force to open the brake. The latter brake is loosened in the normal state, and an external force is required to close the brake.
4. According to the type of external force applied when the brake is closed or opened by the double-beam crane, the brake is divided into manpower, electromagnetic force, hydraulic pressure, centrifugal force and internal force in the mechanism. Among them, electromagnetic force is used more.
5. According to the type of double-beam crane operation, there are two categories of controlled brakes and automatic brakes. Operating brake The opening and closing of the brake is controlled by an external force applied to the handle or pedal through a lever system. The automatic brake is not controlled by the worker, and is stopped by the force or centrifugal force generated by the heavy load.