Regarding the question of how the brake works, we must first understand its braking system. So how does the brake's braking system work and function?
A simple schematic diagram of the hydraulic braking system can be used to illustrate the working principle of the braking system. A metal brake drum with an inner circular surface as the working surface is fixed on the wheel hub and rotates with the wheel.
On the stationary brake floor, there are two support pins that support the lower ends of the two arc-shaped brake shoes.
The outer surface of the brake shoe is provided with friction linings. The brake floor is also provided with a hydraulic brake wheel cylinder, and an oil pipe 5 is used to communicate with the hydraulic brake master cylinder mounted on the frame. The piston 3 in the master cylinder can be operated by the driver through a brake pedal mechanism.
When the driver depresses the brake pedal and the piston compresses the brake fluid, the wheel cylinder piston presses the brake shoes against the brake drum under the action of hydraulic pressure, so that the brake drum reduces the rotation speed or remains stationary.
The resistance torque that must be applied to stop or decelerate the mechanical running parts is called braking torque. The braking torque is the basis for the design and selection of the brake, and its size is determined by the type of machinery and work requirements.
The performance of the friction material (braking parts) used on the brake directly affects the braking process, and the main factors affecting its performance are the operating temperature and temperature rise rate. The friction material should have a high and stable friction coefficient and good abrasion resistance.
Friction materials are divided into two types of metal and non-metal. The former are commonly used in cast iron, steel, bronze and powder metallurgy friction materials, while the latter are leather, rubber, wood and asbestos.