A gap self-adjusting device for multi-disc wet brake

Abstract

The invention discloses a gap self-regulating device for a multiple-disc wet brake. The gap self-regulating device comprises a lining 1, an elastomer 2, a sliding sleeve 3, a blocking shoulder 4 and a compensation guide pin bolt 5. The elastomer 2 is installed in the lining 1 in an interference mode. The blocking shoulder 4, the sliding sleeve 3 and the elastomer 2 are sequentially installed on the compensation guide pin bolt 5. The lining 1 is fixedly installed on a piston 6 through a shaft retaining ring. The elastomer 2 is installed on the lining 1 in the interference mode. The elastomer 2 is in clearance fit with the sliding sleeve 3 and can be made of various elastic materials, such as a spring pin or a rubber pin. The compensation guide pin bolt 5 is installed on a brake cavity 7.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a gap self-adjusting device for multi-disc wet brakes. Background technique [0002] At present, the wet bridge adopts fully enclosed multi-disc wet brakes, which are widely used in special vehicles with harsh working environments and large braking torques. The multi-disc wet brake is achieved by hydraulically pushing the piston to compress the friction pair to generate braking torque. During the use of the vehicle, frequent braking will cause the friction pair to wear continuously, the brake gap will increase accordingly, and the piston stroke will increase. It will also gradually increase, resulting in a gradual increase in the amount of fluid required for braking, and even causing the piston movement stroke to exceed the set stroke to make the brake ineffective, thereby threatening driving safety. Therefore, it is very important to ensure that the piston maintains a st...

AI Technical Summary

Problems solved by technology

[0003] Generally applicable to the multi-disc wet brake clearance adjustment device, the principle is that the friction between the bush and the spacer is greater than the return force of the piston to provide a stable set brake clearance value. Currently, it is used for clearance adjustment of multi-disc wet brakes. The device relies on the processing interference size between the bushing and the spacer to ensure the friction between the bushing and the spacer. First, the processing parts also need high precision requirements, and secondly, it is difficult to ensure a stable interference by relying on the processing interference size. The interference size will be consumed by long-term wear during repeated use, so that the friction between the bush and the spacer cannot reach a stable value, and a stable compensation gap cannot be provided during the gap compensation process, which may affect the brake normal work and driving risks

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