air disc brake

Abstract

The invention discloses a pneumatic disc brake, which comprises a main shaft, on which a brake disc and a caliper mounting seat are connected, on which a mounting cylinder is arranged, and a piston is installed in the mounting cylinder, and the piston A protective layer is connected to the end of the piston, and an inner brake pad is connected inside the piston, and a brake pad anti-reverse device capable of protecting the protective layer is arranged between the piston and the inner brake pad. This air disc brake, through the anti-reverse The detection device is used to detect the size of the bayonet pin on the brake pad. Only the matching bayonet pin can correctly make the limit device limit the moving sleeve, so that the brake pad can be installed stably, and the moving sleeve is under the action of the first spring. The bottom will exceed the piston, so that when the brake pad is installed, the circlip can be pre-guided, so that the circlip will not damage the protective layer.

Description

technical field [0001] The invention relates to the technical field of brakes, in particular to a pneumatic disc brake. Background technique [0002] The rotating element in the friction pair of the disc brake is a metal disc that works on the end face, called the brake disc. The friction elements clamp the brake disc from both sides to produce braking. There are many structural forms of the fixed element, and disc brakes can be generally divided into two types: caliper disc brakes and full disc brakes, while air disc brakes use an air chamber as a driving source. [0003] There are two brake pads installed on one brake disc. The one close to the inner side of the car body is pushed by a piston. When the piston is pushed, the end of the brake pad and the forward side first contacts the brake disc, and then automatically brakes tightly. If the installation is reversed (that is, the left and right wheels are installed reversely, or the left and right sides of the same wheel ...

AI Technical Summary

Problems solved by technology

[0003] There are two brake pads installed on one brake disc. The one close to the inner side of the car body is pushed by a piston. When the piston is pushed, the end of the brake pad and the forward side first contacts the brake disc, and then automatically brakes tightly. If the installation is reversed (that is, the left and right wheels are installed reversely, or the left and right sides of the same wheel are installed reversely), it will cause insufficient braking force, affect the braking stability, and there will be certain safety risks. The pin on the chip may touch the leather tube outside the piston and break, and the existing one only has an arrow to distinguish it, but in many cases it is still wrongly installed, resulting in traffic accidents, and the wheel is far away from the brake on the side of the car body The pads are linked through mechanism linkage, so there is no positive and negative, and when the brake pads are installed, the circlip on the brake pads may touch the protective layer outside the piston

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