What is the function of the brake shoe assembly

Release time：

2023-05-18 09:29

What is the function of the brake shoe assembly
What is the function of the brake shoe assembly

The function of the moving shoe assembly is to withstand the thrust of the actuator, the normal and tangential forces of the brake drum, and the support reaction force. It is a friction couple component of a drum brake, which not only has the strength and stiffness required as a component, but also has the highest and stable friction coefficient possible, as well as appropriate wear resistance, heat resistance, heat dissipation, and thermal capacity.

Drum brakes are divided into the following three categories:

1. Wheel cylinder brake, which uses the rotating piston to push the brake shoe open;

2. The cam opening brake uses the rotation of the cam to open the brake shoe. According to the force on the cam, it can be divided into two types: unbalanced and balanced. The former is fixedly connected or integrated with the shaft; The latter cam can float on the shaft, and this structure is rarely used due to its serious drawbacks;

3. Wedge brake, which uses the wedging of the wedge rod to open the brake shoes.

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Essentials of brake pedal operation

1. Slow braking: Press the clutch pedal while releasing the accelerator pedal, push the gear lever to the low gear position, then lift the clutch pedal and quickly place the right foot on the brake pedal. Gradually press the brake pedal according to the required speed and parking distance until it stops.

The working principle of the brake

Use the mutual friction between non rotating components connected to the vehicle body (or frame) and rotating components connected to the wheel (or transmission shaft) to prevent the rotation or tendency of the wheel. A brake is a device that has the function of slowing down, stopping, or maintaining a stopped state of moving parts (or moving machinery). The brake mainly consists of a brake frame, brake components, and control devices, and some brakes are also equipped with automatic adjustment devices for brake component clearances. In order to reduce braking torque and structural dimensions, brakes are usually installed on the high-speed shaft of equipment, but large equipment with high safety requirements (such as mine hoists, elevators, etc.) should be installed on the low-speed shaft near the working part of the equipment.

Disc and drum brake systems for motor vehicles

The function of the car braking system is to slow down or stop the driving car according to the driver's needs, maintain a stable speed for downhill driving, and keep the stopped car in place. According to the timing of the braking system, it can be divided into service braking system, parking braking system, emergency braking system, and auxiliary braking system. According to the braking control energy, the braking system can be divided into manual braking system, power braking system, and servo braking system. According to the transmission mode of braking energy, braking systems can be divided into mechanical, hydraulic, pneumatic, electromagnetic, and combination braking systems. The automotive braking system mainly consists of four parts, namely energy supply device, control device, transmission device, and brake.