FAW J6 assembly of the liberation of the liberation of the general assembly

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First, the braking system structure characteristics: commercial vehicles to ensure safe and reliable, with four sets of brake devices, including the main brake, parking brake (emergency brake), auxiliary brake and Trailer brake. 1, the main brake (brake system). The main brake is what we usually say "foot brake". Commercial vehicle heavy duty vehicle owner for pedal control. Double loop air brake system driven by compressed air. The first loop effect on (in) the rear axle wheel; second loop to front axle wheel. The two circuit is independent of each other, one of the circuit failure, the other circuit can still work to ensure safe driving. 2, parking brake (parking brake system). The parking brake is usually said "hand brake". Spring type energy storage braking device for commercial vehicle heavy duty vehicle parking brake. When the parking brake valve is operated, the compressed air in the energy storage device is released, and the spring pushes the brake arm and the cam under the action of the restoring force. Also called emergency brake. Emergency brake is a brake device which is used to replace the main brake in the main brake control system. Depending on the energy storage spring thrust automatic emergency braking, emergency braking and parking brake the car uses a set of control system, main brake, parking brake and emergency brake actuator -- a set of brake shoes and brake drum. 3, auxiliary brake. Auxiliary brake for engine exhaust brake, engine exhaust pipe is equipped with braking butterfly valve, a driving chamber and valve button (or driving engine exhaust brake indoor switch) control, compressed air driven rotating butterfly valve to achieve the brake, deceleration or steady speed for long downhill. 4, trailer single brake, installed in the tractor trailer or semi trailer used to separate the braking system, with the moving function. When a trailer is required to be separately brake, the trailer is pulled back by a single brake valve handle, and the handle can automatically bounce back to the original position. Two, the overall requirements of the braking system: must have traffic brake, parking brake and emergency brake (must be adjustable) three kinds of functions. Vehicle braking and parking brake control devices must be independent of each other, and the emergency braking and parking brake control. Parking brake must be able to make the vehicle even in the absence of the driver, by means of a mechanical device to lock the brakes, so that it can reliably stop on the ramp. If the braking and emergency braking of any part of the operating device parts failure, must still be able to ensure that the performance requirements of the emergency brake. Trailer off or connected to the pipeline off or leakage, must be able to cause the automatic braking of the trailer.