Drum brake pad 3
Drum brake consists of brake drum and brake shoe. The shape of the brake drum is like a washbasin. It is made of metal with good heat dissipation and rotates with the wheel. The brake shoe is mounted on the fixed brake base plate. Two arc-shaped brake shoe pieces form a circle with a diameter slightly smaller than the brake drum and extend into the brake drum. When braking, the driving mechanism expands the circular brake shoe, and the brake shoe with high friction performance on the surface rubs violently against the inner surface of the brake drum, forcing the brake drum in rotation to slow down gradually until it stops rotating. Friction produces heat. Kinetic energy is converted into heat. The car stops moving.