Multi-disc brake

Abstract

The invention discloses a multi-disc brake, and relates to a vehicle brake. The multi-disc brake is provided with a left brake, a right brake and a piston bracket, wherein the left brake is provided with a planet wheel carrier, left movable friction sheets, left static friction sheets, a left piston, an internal tooth ring and a left return spring; external teeth of the left static friction sheets are connected with the internal teeth of the internal tooth ring; internal teeth of the left movable friction sheets are connected with external teeth of the planet wheel carrier; external teeth of the piston bracket are connected with the internal teeth of the internal tooth ring; the left piston is arranged at the left edge of the piston bracket; and the left return spring is respectively connected with the piston bracket and the left piston. The right brake is provided with a right piston, right static friction sheets, right movable friction sheets, an internal tooth ring, an internal tooth ring bracket and a right return spring; external teeth of the right static friction sheets are connected with internal teeth of the piston bracket; internal teeth of the right movable friction sheets are connected with external teeth of the fixed bracket; the total number of the right static friction sheets is one more than that of the right movable friction sheets; the right piston is arranged at the right edge of the piston bracket; the right return spring is respectively connected with the piston bracket and the right piston; and the internal tooth ring bracket is relatively static to a bridge shell.

Description

technical field [0001] The present invention relates to a vehicle brake, in particular to a multifunctional wet multi-disc braking device applicable to various vehicles including industrial vehicles. Background technique [0002] At present, the types of brakes in my country's construction machinery field mostly use caliper disc brakes. Although caliper disc brakes have stable braking performance, can withstand the influence of temperature, water immersion and vehicle speed to a certain extent, and have better resistance to recession, etc. Generally, there is only one piece of brake disc, which has the disadvantages of small friction area, high pressure per unit area, poor heat dissipation conditions, easy ablation, and short service life. With the continuous development of the construction machinery industry, the requirements for braking performance are getting higher and higher. In recent years, the multi-disc wet disc brake adopted by foreign countries has been more and mo...

AI Technical Summary

Problems solved by technology

[0003] Most domestic wet multi-disc brakes achieve braking through the braking half shaft (such as Chinese patent ZL200720311907.5), but in the case of meeting the design requirements, in actual use, the braking half shaft will experience half shaft fatigue fracture conditions, and cause the vehicle to be unable to brake and cause accidents, especially in the field of construction machinery with more complicated working conditions

Fatigue damage is generally caused by poor working conditions and frequent braking. The traditional solution is to increase the diameter of the half shaft, replace the material of the half shaft, and change the heat treatment process of the half shaft. However, this method not only increases the manufacturing cost, but also The increase range of fatigue stress is also relatively limited, and this phenomenon cannot be effectively controlled, causing certain safety hazards to the operator.

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