Brakes can be divided into industrial brakes and automobile brakes from the general category. These two categories can be divided into many small categories. Today, let me introduce you to the components of block brakes used in industry:

　　The block brake is composed of a brake shoe, a brake arm, a brake wheel and a brake release.

　　The brake wheel is often installed as a half of the coupling on the rotating shaft of the mechanism. The symmetrically arranged brake arm is hinged with the fixed part of the frame, and the two brake shoes with friction material attached to the inner side are respectively hinged. On the two brake arms, under the action of the upper brake force of the brake release, the pair of brake pads lock the brake wheel in the radial direction to generate a braking torque.

　　When the power is turned on, the iron core of the electromagnetic brake release attracts the armature to press against the push rod, and the push rod pushes the left brake arm to swing to the left, and the main spring is compressed. At the same time, the pressure-relieving auxiliary spring pushes the right brake arm to the right, and the two brake arms drive the brake shoe to separate from the brake wheel, and the mechanism can move. When the power supply is cut off, the iron core loses its magnetism and the attractive force on the armature is eliminated, thus releasing the pressure of the armature on the push rod. Under the action of the main spring tension, the two brake arms retract together to drive the brake pads to hold tightly. The brake wheel generates braking torque; at the same time, the auxiliary spring is compressed. The braking torque is determined by the force of the main spring, and the auxiliary spring ensures the gap between the loosening.

　　The braking performance of the block brake is largely determined by the performance of the brake release.