Hengyang Heavy Industry MWZ315-630 DC Electromagnetic Drum Brake Equal Retraction Device

The brake mainly consists of a brake frame, brake components, and control devices. Some brakes are also equipped with automatic adjustment devices for brake component clearances. In order to reduce braking torque and structural dimensions, brakes are usually installed on the high-speed shaft of equipment, but large equipment with high safety requirements (such as mine hoists, elevators, etc.) should be installed on the low-speed shaft near the working part of the equipment.

Some brakes have been standardized and serialized, and are manufactured by professional factories for selection.

Electromagnetic brake

It is mainly matched with series motors. Widely used in metallurgy, construction, chemical, food, machine tools, stages, elevators, ships, packaging and other machinery, as well as in situations such as emergency braking during power outages.

The resistance torque that must be applied to stop or decelerate the mechanical operating components is called the braking torque. The braking torque is the basis for designing and selecting brakes, and its size is determined by the mechanical type and working requirements. The performance of the friction materials (brake components) used on the brake directly affects the braking process, and the main factors affecting its performance are the working temperature and temperature rise rate. Friction materials should have high and stable friction coefficients and good wear resistance. Friction materials are divided into two categories: metallic and non-metallic. The former commonly used include cast iron, steel, bronze, and powder metallurgy friction materials, while the latter includes leather, rubber, wood, and asbestos.

Electromagnetic brake can be divided into electromagnetic powder brake, electromagnetic eddy current brake, electromagnetic friction brake and other forms. In addition, it is further divided into dry single disc electromagnetic brakes, dry multi disc electromagnetic brakes, wet multi disc electromagnetic brakes, and so on. According to the braking method, electromagnetic brakes can be divided into energized braking and deenergized braking.