a brake drum

Abstract

The invention discloses a brake drum, which comprises a brake drum body provided with an installing part, a transition connecting part and a brake part, wherein one end, far away from the transition connecting part, on the brake part is tightly matched with a hoop ring; an annular reinforcing rib is arranged on the brake part positioned between the hoop ring and the transition connecting part; the annular reinforcing rib is projected out of the outer surface of the brake part and is made into a whole with the brake part; a plurality of first weight reducing grooves are formed in one side surface or two side surfaces of the annular reinforcing rib. Through the matching of the reinforcing rib and the hoop ring, the structure strength and the mechanical property are ensured; the heat radiation effect is good; the occurrence of longitudinal tiny crack and craze crack of the inner wall of the brake drum is avoided; the radial expansion deformation can also be counteracted; the fatigue resistance of the brake drum is improved; meanwhile, the tight holding force of the hoop ring on the brake drum body is realized; the disk of brake drum flying due to fracture is avoided; the service life is prolonged; the use safety is improved; through the first weight reducing grooves, the effect of the annular reinforcing rib is not influenced, the weight of the brake drum can also be reduced, and the light weight of the brake drum is realized.

Description

technical field [0001] The invention belongs to the technical field of automobile brake systems, and in particular relates to a brake drum. Background technique [0002] The braking system is one of the important components of the automobile. At present, in the field of trucks, the traditional integral casting drum brake is widely used. At present, a typical drum brake consists of a brake drum and a brake shoe, and the brake shoe can be in contact with the inner surface of the brake drum. The brake drum is in a rotating state when the car is running. When braking is required, the brake shoe is pressed against the brake drum under the action of the braking force, and the frictional resistance between the brake drum and the brake drum is used to make the driving The car slows down or stops to ensure driving safety. [0003] When the car is heavy-loaded and running at high speed, especially when going down a long or steep slope, the temperature of the inner wall of the brake ...

AI Technical Summary

Problems solved by technology

With the brake drum of this structure, the overall weight of the brake drum is not reduced. After the brake drum is installed on other parts, the burden on other parts will be increased. Moreover, the manufacturing process is complicated, the molding is difficult, the yield rate is low, and the manufacturing cost At the same time, the shape of the brake drum of this structure is complex, and the wall thickness is prone to uneven phenomenon, which leads to poor dynamic balance effect

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