Transmission shaft braking wet multi-disc brake for driving axle

Abstract

The invention belongs to the technical field of coal mine trackless auxiliary transportation devices, and in particular relates to a transmission shaft braking wet multi-disc brake. The brake comprises an inner shell, a middle shell, an outer shell and a supporting shaft, wherein a hollow piston is arranged in the middle shell; a friction pair is arranged in an inner hole of the piston and consists of a plurality of circular steel sheets which are fixedly connected in the inner hole of the piston through splines along the radial direction at equal intervals, and a plurality of circular friction sheets which are fixedly connected to the excircle of the supporting shaft through splines and positioned among the steel sheets; a certain gap is reserved between each steel sheet and each friction sheet; high pressure oil is injected into a cavity at the front end of the piston, so that the piston moves, a large gap is formed between each steel sheet and each friction sheet, and braking is released; and when the oil returns to a hydraulic system or the hydraulic system fails, a braking system eliminates the gap between each steel sheet and each friction sheet through a spring, braking moment is generated, and moving parts are completely immersed in lubricating oil. The brake is suitable for a transportation device requiring long-time braking.

Description

Technical field [0001] The invention belongs to the technical field of trackless auxiliary transportation devices for coal mines, and specifically relates to a drive shaft braking wet multi-disc brake. Background technique [0002] At present, the brake system of the domestic coal industry trackless auxiliary equipment—explosion-proof rubber-tyred vehicles generally uses wet multi-disc brakes. Wet brakes can be divided into wheel-side brake type, half-shaft brake type, and wheel-side brake type according to their installation position. The brake is mostly installed on the wheel hub, and the entire brake is sealed in the structural space of the tire. Therefore, the heat dissipation condition of the tire is poor. The brake works for a long time, and the temperature rises easily, which leads to the decrease of braking efficiency and the occurrence of oil leakage. Semi-axle brake type wet brakes are often integrated in the axle housing. Due to the large heat dissipation area, the low...

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Problems solved by technology

[0002] At present, the braking system of the trackless auxiliary equipment in the domestic coal industry—explosion-proof rubber-tyred vehicles generally adopts wet multi-disc brakes. The brakes are mostly installed on the wheel hub, and the entire brake is sealed in the structural space of the tire, so the heat dissipation conditions of the tire are poor, and the brake works for a long time, and the temperature is very easy to rise rapidly, resulting in a decrease in braking performance and oil leakage. The half-shaft brake type wet brake is often integrated in the axle housing. Due to the large heat dissipation area, the temperature of the lubricating fluid and working fluid is low, and the thermal stability of the brake is good. However, this integrated built-in brake will make the maintenance and adjustment of the brake not very convenient

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