A pressure brake is a mechanical component that stops or decelerates moving parts in machinery. 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. In order to reduce braking torque and structural dimensions, electromagnetic brakes are usually installed on the high-speed shaft of equipment, but for large equipment with high safety requirements (such as mine hoists, elevators, etc.), they should be installed on the low-speed shaft near the working part of the equipment.

Pressure brakes are divided into short stroke block brakes and long stroke block brakes according to the length of the control device stroke. The magnet of the short stroke block brake is directly installed on the brake arm. During operation, the moving iron core rotates around the pin shaft to achieve the release of the brake; When the magnet loses power, it relies on the main spring to tightly close. This type of brake has a compact structure, with fast closing and releasing actions, but with a large impact force. Long travel block brakes can generate a large release force through the brake lever system, but the braking action is smooth and suitable for various sizes of deceleration equipment.