YWZ9-400/E50A ELECTRO HYDRAULIC And DRUM BRAKE

How much do you know about electro-hydraulic drum brakes?

A typical drum brake is mainly composed of bottom plate, brake drum, brake shoe, wheel cylinder (brake cylinder), return spring and positioning pin.
The bottom plate is installed in the fixed position of the axle. It is immobile. It is equipped with a brake shoe, a wheel cylinder, a return spring and a positioning pin, and bears the rotating torque when braking.

Each drum has a pair of brake shoes with friction pads. The brake drum is installed on the wheel and rotates with the wheel. It is made of cast iron and looks like a drum.

When the vehicle brakes, the piston of the wheel cylinder pushes the brake shoe to press the brake drum, and the brake drum is slowed down by friction, forcing the wheel to stop rotating.

The rear wheel drum brake structure is shown in the following figure, which is a wheel cylinder type unbalanced brake.
In the brake, the rotating part is the brake drum, which is connected with the wheel by bolts and rotates with the wheel;

The fixing piece is a brake bottom plate 10, which is mounted on the flange at the end of the rear axle beam. The brake bottom plate is equipped with brake parts such as brake shoe 3 and wheel brake cylinder assembly 

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