Spiral ventilation radiating brake drum

Abstract

The invention relates to a spiral ventilation radiating brake drum which comprises a brake drum body. A brake friction face is arranged in the middle of the brake drum body, 4-10 rows of radiating holes series evenly distributed spirally are formed in the brake friction face, each row of radiating hole series comprises 4-8 radiating holes, and each row of radiating hole series are arranged linearly in the cross section of the brake drum body. The brake drum is light in weight, reduces the steps in the radiating process aspect of the existing brake drum, reduces production cost and greatly improves the braking capability foremost.

Description

technical field [0001] The invention belongs to automobile brake parts, in particular to a novel brake drum with ventilation and fast heat dissipation. Background technique [0002] In the drum brake system of a car, the brake of the vehicle is achieved by friction between the friction plate in the brake and the brake drum. During the long-distance downhill braking of the car, the heat of the brake drum is not easy to dissipate, and the temperature will rapidly increase. If the temperature rises, the brakes will fail if the temperature is too high, causing major traffic accidents. Therefore, many vehicles are also equipped with a water tank for dripping water from the brake drum to cool down, but this increases the weight of the vehicle. The brake drums in the prior art are generally iron castings. The disadvantages are that the inner and outer surfaces are smooth, which makes it difficult to increase the braking force, the brakes are not sensitive enough, and it is not eas...

AI Technical Summary

Problems solved by technology

[0002] In the drum brake system of a car, the brake of the vehicle is achieved by friction between the friction plate in the brake and the brake drum. During the long-distance downhill braking of the car, the heat of the brake drum is not easy to dissipate, and the temperature will rapidly increase. If the temperature rises, the brakes will fail if the temperature is too high, causing major traffic accidents. Therefore, many vehicles are equipped with a water tank for dripping water from the brake drum to cool down, but this increases the weight of the vehicle.

The brake drums in the prior art are generally cast iron. The disadvantage is that the inner and outer surfaces are smooth, which makes it difficult to increase the braking force, the brake is not sensitive enough, and it is not easy to dissipate heat. When it meets water at high temperature, it is easy to produce cracks

However, due to the use of oblique ribs, when the brake drum rotates, it will inevitably produce a certain amount of wind resistance, which is not conducive to the entry and discharge of air, and its heat dissipation effect is poor.

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