The principle of using the brake chamber

1. The function of the brake air chamber is to convert the pressure of the compressed air from the brake valve into the mechanical force of the brake air chamber push rod. Commonly used brake chambers are diaphragm type and piston type. The pneumatic brake air chamber is generally composed of a brake chamber shell and a cover, which are connected together by a clamp. There is a brake chamber diaphragm between the shell and the cover, and the diaphragm and the cover are close to each other in the free state. The other side of the diaphragm is in contact with the disc of the push rod, and the other end of the push rod has a connecting fork for connecting the adjusting arm of the brake cam.
2. When the brake pedal is stepped on, the compressed air enters the brake chamber to deform the diaphragm under the action of air pressure, pushes the push rod and drives the adjusting arm, and turns the brake cam to press the shoe against the brake drum to generate a brake. action. When the brake pedal is released, the air in the brake air chamber is discharged to the atmosphere through the exhaust port of the brake valve, and under the action of the diaphragm spring, the push rod and the diaphragm return to release the brake.