A friction plate return mechanism and an air pressure disc brake with the mechanism

Abstract

The purpose of the present invention is to provide a friction plate return mechanism with simple structure and without affecting the braking force of the friction plate and an air pressure disc brake with the return mechanism. The friction plate return mechanism of the present invention is composed of an air pipe, two friction plates that are relatively arranged and movable relative to each other, and a brake disc located between the two friction plates; One side of the rotor is the intake section extending along the moving direction of the friction plate, and the side of the ventilation pipeline facing the brake disc is the air outlet section; the air pipe extends from the outer side of the friction plate to the intake section of the ventilation pipeline. The air storage tank in the pneumatic disc brake of the present invention is connected with the air inlet of the brake distribution valve, the air outlet of the brake distribution valve is connected with the brake air chamber, the brake distribution valve is controlled by the brake pedal, and the compressed air To drive the caliper, thereby driving the friction plate to move relatively to achieve braking; the key is that the air intake end of the air pipe of the friction plate return mechanism is connected with the exhaust gas outlet of the brake distribution valve.

Description

technical field [0001] The invention belongs to the technical field of automobile chassis brake application, and in particular relates to a brake system of an automobile. Background technique [0002] With the development of technology, pneumatic disc brakes are increasingly used in large commercial vehicles to replace traditional drum brakes. Compared with drum brakes, air disc brakes have better stability and thermal decay performance. But the only shortcoming is that the return of the friction plate of the pneumatic disc brake adopts natural return, and the friction plate is returned by the rotation of the brake disc. There is no active return structure, which will cause the following problems: There is always dragging between the friction plate and the brake disc, which will cause a series of problems such as friction plate wear, noise, and increased fuel consumption. [0003] In order to solve the above problems, technicians have added a return mechanism for the frict...

AI Technical Summary

Problems solved by technology

But the only shortcoming is that the return of the friction plate of the pneumatic disc brake adopts natural return, and the friction plate is returned by the rotation of the brake disc. There is no active return structure, which will cause the following problems: There is always dragging between the friction plate and the brake disc, which will cause a series of problems such as friction plate wear, noise, and increased fuel consumption

[0003] In order to solve the above problems, technicians have added a return mechanism for the friction plate on the air disc brake, mainly using springs to control the return of the friction plate, such as the patent No. 201510437414. Its friction plate active return method", and the "air pressure disc brake automatic return device" disclosed in the patent No. 201420665802.X, etc., but this method increases the brake air chamber required for braking The air pressure (because of the elastic force of the return spring to overcome), and the assembly of the air disc brake is more complicated, so it is difficult to popularize and use

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