How to brake the double board

There are two kinds of double-plate brakes, one is push-pull brake and the other is friction brake. When pushing and pulling the brake, the driver pushes and pulls the hand brake handle, and the lever of the hand brake handle can push and pull the brake to the wheel to stop the wheel from rotating, thus achieving the braking effect. Friction braking is a braking method based on brake and brake friction system. The brake will combine the braking friction system to each wheel, thus generating a certain friction force, and the brake will squeeze the wheel through external force to achieve the purpose of braking. Million car purchase subsidy