MW250-315 Electromagnetic Drum Brake Hengyang Heavy Industry Asbestos Free Liner

Structure and working principle

The brake is composed of a magnetic yoke, excitation coil, spring, brake disc, armature, spline sleeve, installation screws, etc. The brake is installed at the rear end of the flange plate (or motor) of the equipment; The transmission shaft is connected to the spline sleeve and the brake disc.

When the excitation coil of the brake is connected to the rated voltage (DC), the electromagnetic force pulls on the armature to separate (release) the armature from the brake disc. At this time, the transmission shaft runs or starts normally with the brake disc. When the transmission system is separated or powered off, the brake is also powered off at the same time. At this time, the spring is applied to the armature, forcing the brake disc to produce Friction torque between the armature and the flange, so that the transmission shaft stops quickly. When the heat dissipation environment of the brake is poor and the transmission shaft operates continuously for a long time, if conditions permit, the voltage can be maintained to convert to 70% -80% of the rated voltage after the brake operates to reduce heating.

A Machine element that stops or decelerates moving parts in a machine. Commonly known as brakes or brakes. The Qiandai electromagnetic brake mainly consists of a brake frame, brake components, and control devices. Some electromagnetic brakes are also equipped with automatic adjustment devices for the clearance of brake components.

Some electromagnetic brakes have been standardized and serialized, and are manufactured by professional factories for selection. Qiandai electromagnetic brake is an ideal automatic actuator in modern industry, mainly used for transmitting power and controlling motion in mechanical transmission systems. It has the advantages of compact structure, simple operation, sensitive response, long service life, reliable use, and easy to achieve remote control.

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