How does the handbrake work?
Handbrakes For small cars, some are behind the gearbox, where there is a brake disc at the point where it is connected to the drive shaft, similar to a disc brake (and of course drum type), and then the tension is transmitted through the cable. Realize parking brake.
After pulling the handbrake, it uses a hydraulic auxiliary cylinder to push the hydraulic cylinder under the car to move, and then drives the valve. (The reason why this design is for the cab not to hear the sound of the air), then after the valve is actuated, Brake drive shaft, the car only brakes the drive shaft. When the brake drive shaft is completed, if it is an ordinary truck, the cable is pulled by the hand brake lever to achieve long-term braking. If it is a high-grade truck, such as Volvo The electric control is used. When you push the handbrake, there is actually an electric boring machine that has started. After the air brake is completed, he pulls the cable and locks it. Of course, there is also a direct pull brake.