What is China brake chamber?
There are two typical types of China brake chambers, one is a double-diaphragm spring brake chamber, and the other is a combined spring brake chamber. Their uses and principles are different. The purpose of the double diaphragm spring brake air chamber is composed of two independent diaphragm air chambers, which are operated independently by the service brake and the parking brake or emergency brake components. It is used to provide brake power for the wheels. Then another combined spring brake chamber is used for the wheels to provide braking force. 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 brake part work completely independently.
The working principle of the China brake chamber is that when the vehicle brakes, compressed air enters the first air chamber through the air inlet, acts on the diaphragm, moves to the right against the compression spring, and generates braking force acting on the gap. The adjusting arm brakes the wheels. When the pressure in the first chamber decreases, the compression spring pushes the diaphragm and push plate back into place. During parking brake, when the pressure in the second chamber is fully or partially deflated, the compression spring will brake the wheel through the piston and the push rod. When there is no pressure in the second chamber, the braking force is maximum.
Since the braking force comes from mechanical braking, that is, compression spring force, the spring cavity can be used for parking brake. When the brake is released, the pressure in the second chamber increases through the other port. Mechanical release mechanism: In an emergency, the double-chamber air chamber has a mechanical release device with a spring chamber. If the pressure on the other port is zero, use a wrench to loosen the screw to release the parking brake.
The advantages of China brake chamber are as follows:
1. Due to the energy storage effect of the air chamber, the vehicle can maintain a good braking state when the vehicle is parked for a long time.
2. Due to the parking brake function, the parking brake is safer and more reliable.
3. When the tractor is separated from the trailer, the trailer can brake by itself and is in a good braking state.
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