Working principle of automobile brake

1, the manipulator brake and the brake caliper of the rear wheel are linked by steel wire or similar mechanism. After the handbrake is pulled, the caliper presses the brake pad to realize the parking function.

2. The electronic handbrake is to link the brake caliper of the rear wheel by turning on the parking switch, motor-driven steel wire or similar mechanism, and realize the parking function by pressing the brake pad with the caliper.

3. The hand brake of a small car has a brake disc behind the gearbox, which is similar to a disc brake (of course, there is also a drum brake), and then the tension is transmitted there through a steel cable to realize parking braking.

4. After the handbrake is pulled, it uses a hydraulic slave cylinder to push the hydraulic master cylinder under the car to move, and then drives the air valve, and then brakes the transmission shaft after the air valve moves. The car only brakes the transmission shaft by hand.

5. After the transmission shaft is braked, if it is an ordinary truck, pulling the steel cable of the handbrake lever can achieve long-term braking. If it is a high-end truck, such as Volvo's, use electronic control. When you press the handbrake, an electric traction machine has actually started. After the air brake is completed, he pulls the cable and locks it. Of course, there are also direct brakes.

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Precautions for use

For the most common manipulator brake, first of all, pay attention not to pull it violently every time you stop, especially not to pull it to the head, because excessive stretching of metal or keeping stretching for a long time will accelerate the deformation, which will lead to the braking of the handbrake cable. The correct way is to hold the handbrake until the rear wheel is locked, and then lift the 1-2 grid upward to ensure that the car does not slip.

If you park on a ramp, it is not recommended to fix the car with the hand brake, because doing so will make the hand brake bear excessive braking force and accelerate the wear of the hand brake. The correct way is to fix it with a hand brake after parking, and then find some reliable bricks or other objects to pad under the tires. After the wheels are firmly fixed, release the handbrake to transfer the force to the four wheels, and then pull the handbrake to make the wheels and handbrake bear the same force.