by the brake drum and the brake shoe composition. When braking, the brake shoe round flared outwardly, friction with the inner surface of the rotating wheel brake drum forces the brake drum and the wheel deceleration until it stops rotating.
1. The drum brakes advantage
· drum brakes have good self-brake effect, forceful, general large vehicles or the use of drum brakes.
– lower cost, the first drum brake for braking systems, manufactured at a low technical level.
2. The drum brake disadvantages
· brakes (BrakeLining) sealed within the brake drum, the debris produced by wear can affect the contact surface thereby affecting the braking performance.
· relatively poor thermal performance, the brake shoe and the brake drum in the high temperatures generated during braking complex prone to deformation, causing brake fading phenomenon shaking and vibration, will cause decreased braking efficiency.
· brake clearance should be adjusted, and more sealing parts, so that maintenance is not easy.
3. What drum brake is
· Today, most family cars have been popular for the front and rear disc brakes, only a small part of the family cars still use Qianpanhougu brakes.
4. The drum brake technical principle
drum brake works Figuratively, one may use a cup to describe.
brake drums like a cup, when you rotate five fingers into the cup, the finger is the brake pads, as long as your fingers will be out one, rubbing the inner wall of the cup, the cup will stop rotating.
The drum brake on the vehicle by the brake is simply put pumps, pistons, brake pads and the drum composition, braking by the brake cylinder of the high-pressure brake oil pushes the piston of two crescent-shaped brake shoe applying a force, press it against the inner wall of tympanic, frictionally prevent rotation of the brake drum so as to achieve a braking effect.