The spring brake air chamber is part of the car braking system. It is generally installed on the drive axle of the car, and its function is to provide braking torque for the car. There are two typical types of brake air chambers, one is a double-diaphragm spring brake air chamber, and the other is a combined spring brake air chamber. Their uses and principles are different.
Spring Brake Chamber Type
The purpose of double diaphragm spring brake air chamber is composed of two independent diaphragm air chambers, which are independently operated by the components of the service brake and parking brake or emergency brake, which are used to provide braking force for the wheels. power.
The combined spring brake air chamber is used to provide braking force to the wheels and 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 is used for emergency braking and parking brake. The moving part and the diaphragm braking part work completely independently.
Spring brake air chamber principle
1. Working principle of double diaphragm spring brake chamber
During service braking, the compressed air enters cavity a through port 11, acts on diaphragm b, and compresses spring c, push rod d pushes out, and the pressure acting on the diaphragm acts on the adjusting arm through the connecting rod, which produces an impact on the wheel. Braking torque.
During parking and emergency braking, the manual valve makes the compressed air in the E cavity completely or partially released through the 12 ports, and the energy storage spring g also releases the energy completely or partially, through the diaphragm f, the push rod kd and the brake The adjusting arm acts on the wheel brakes.
When driving normally, place the loosening bolt h in hole A and tighten it with a nut. When mechanical loosening is required, place the loosening bolt in the tray i, rotate it 90 degrees, and then unscrew the loosening bolt to achieve manual connection when there is no compressed air. Except for braking.
2. Working principle of combined spring brake air chamber
When the service is braked, the compressed air from the foot brake valve enters the A cavity through the 11th port, acts on the diaphragm, and compresses the spring C to push out the piston e, and the force acting on the diaphragm d acts on the diaphragm d through the push rod b. On the brake adjustment arm, braking torque is generated on the wheels.
During parking braking and emergency braking, the hand brake valve makes the compressed air in the B cavity fully or partially release its energy through 12 ports, and generates braking torque on the wheels through the piston e, the push rod b, and the brake adjustment arm.
Unscrew the loosening bolt g to mechanically loosen the parking brake part, which is used to manually connect and remove the brake in the absence of compressed air.
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