In the modern automobile industry, the brake system is one of the core components to ensure driving safety. As a key component of the drum brake system, the performance of the brake shoe directly affects the braking effect and driving safety of the vehicle. With the continuous expansion of the global automobile market, the demand for brake shoes is also growing, especially in the field of commercial vehicles and heavy machinery, where its importance is more prominent.
Working Principle of Brake Shoe
Brake shoes are usually installed in drum brake systems. When the driver steps on the brake pedal, the hydraulic system pushes the brake shoes to expand outward, so that they are in close contact with the inner wall of the brake drum, and the friction slows down the rotation of the wheel, thereby achieving the braking effect. Compared with disc brake systems, drum brake systems are more common in heavy vehicles because of their simpler structure, stronger braking force, and lower cost.
Materials and Performance of Brake Shoes
The performance of brake shoes depends largely on their manufacturing materials. Traditional brake shoes are mostly made of asbestos materials, but as asbestos is harmful to human health, it has been banned in most countries. Modern brake shoes are mainly made of semi-metal, ceramic or organic composite materials, which not only have excellent wear resistance and high temperature resistance, but also can reduce braking noise and dust pollution.
Semi-metal brake shoes are widely used in heavy vehicles due to their high strength and good heat dissipation performance; ceramic brake shoes are gradually becoming a popular choice in the passenger car market due to their low noise and long life; organic composite brake shoes are still in the market in some economical vehicles due to their environmental protection and comfort.
Maintenance and replacement of brake shoes
The degree of wear of brake shoes directly affects the braking effect, so regular inspection and maintenance are essential. Generally speaking, when the thickness of the brake shoes drops below 2 mm, they need to be replaced in time, otherwise it may lead to longer braking distance and even cause safety accidents. In addition, the installation quality of the brake shoes also directly affects their performance. It is recommended that professional technicians replace them to ensure the reliability of the braking system.
With the continuous advancement of automobile technology, the materials and manufacturing processes of brake shoes are also continuously optimized. In the future, more efficient and environmentally friendly brake shoes will become the mainstream of the market, providing stronger protection for global road traffic safety.
