Multi-section brake shoe for drum brake

Abstract

The invention discloses a multi-stage brake shoe for a drum brake, which comprises a brake shoe body detachably connected with a brake disc; the brake shoe body includes a driving shoe and a driven shoe, one end of the driving shoe and a driving shoe The brake shoe body is connected by a hydraulic or cam mechanism, and the other end of the driving shoe is connected by a driven shoe, so that the driven shoe and the driving shoe can be opened and closed synchronously; The mounting plate of the brake bottom plate is used to install the friction plate; a return spring in the same direction as the two is also connected between the driving shoe and the driven shoe, which is used for the return of the brake shoe after it is opened; by improving the brake The structural design of the hoof and the friction plate enables the friction plate to brake evenly, which greatly improves the service life of the brake and ensures a good braking effect of the brake. The braking effect of the shoe brake is not good, and the cost of using the brake is high.

Description

Technical field [0001] The invention relates to the technical field of vehicle brakes, in particular to a multi-section brake shoe for drum brakes. Background technique [0002] Brake is a device that has the functions of slowing down, stopping or maintaining a stopped state of moving parts (or moving machinery). It is a mechanical part that stops or decelerates moving parts in machinery, commonly known as brakes and brakes. The brake is mainly composed of a frame, a brake and a control device. Some brakes are also equipped with automatic adjustment devices for the brake gap. In order to reduce the braking torque and structural size, the brakes are usually installed on the high-speed shaft of the equipment, but large equipment with high safety requirements should be installed near the equipment On the low-speed shaft of the working part. [0003] Among the vehicle brakes, there is a type of brake that adopts the open-shoe drum brake. The open-shoe brake is mainly divided into two...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned problems and provide a multi-stage brake shoe for drum brakes. By improving the structural design of the brake shoe and adopting a multi-stage brake shoe transmission structure, the brake shoe The friction plate on the brake pad can evenly perform friction braking with the brake drum, which greatly improves the service life of the brake shoe, and ensures that the brake adopting the brake shoe with the structure of the present invention has a good braking effect, and its structure is simple to install and It is easy to maintain, and solves the problems of poor braking effect and high brake use cost of existing large-scale vehicle brakes

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