The spring brake chamber is generally organized by two parts

The spring brake chamber provides braking force for the wheels. It consists of two parts. The diaphragm brake part is used for service braking, the spring brake part is used for emergency braking and parking brake, and the spring brake part and the diaphragm The braking part works completely independently. When braking, the compressed air from the foot brake valve enters the A cavity through port 11!
The spring brake air chamber acts on the diaphragm and compresses the spring C to push out the piston e. The force acting on the diaphragm d acts on the brake adjusting arm through the push rod b to generate braking torque on the wheels. During parking brake and emergency braking, the hand brake valve makes the compressed air in the B cavity completely or partially release its energy through port 12, and generates braking torque on the wheels through piston e, push rod b and brake adjustment arm . Unscrew the loosening bolt g ​​to loosen the parking brake part mechanically, which is used to manually remove the brake without compressed air. The friction between the brake shoe and the brake wheel is used to brake. When the driver steps on the brake, the force from the pedal is transferred from the piston of the brake master cylinder through the brake fluid to the wheel sub-cylinders to expand the friction linings to stop the vehicle from moving forward. When stopping the brakes When, the return spring pulls back the friction plate to its original position. Brake fluid plays a role in force transmission throughout the process.

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