Double-tube fully-hydraulic braking device with closed wet-type multi-disc brakes for coal mine explosion-proof vehicle

Abstract

The invention belongs to the technical field of braking devices of coal mine auxiliary conveying machinery, in particular to a double-tube fully-hydraulic braking device with closed wet-type multi-disc brakes for a coal mine explosion-proof vehicle. The invention aims to provide an explosion-proof, antipollution, stable, reliable and sensitive brand-new braking system. The braking device comprises a charging valve, wherein an oil feeding opening P of the charging valve is connected with a hydraulic pump, the oil opening A1 and opening A2 of the charging valve are connected with a front brake energy accumulator and a rear brake energy accumulator, and the oil opening SW is communicated with a parking braking oil pipe; the front and rear braking energy accumulators are connected with serial pedal braking valves respectively; the serial pedal braking valves are connected with a front service brake and a rear service brake respectively; parking braking energy accumulators are connected with parking braking valves; and parking braking valves are connected with parking brakes. The braking device meets the conditions for use in a special underground environment, can improve the braking efficiency and working efficiency and safety of the underground explosion-proof vehicle, reduce labor intensity, reduce casualty and accident rates and make underground conveying safer.

Description

technical field [0001] The invention belongs to the technical field of braking devices for mine auxiliary transportation machinery and equipment, and in particular relates to a full hydraulic double-pipe braking device with closed wet-type multi-disc brakes for explosion-proof vehicles in coal mines. , It is developed to meet the requirements of light-duty explosion-proof rubber-wheeled vehicles used in domestic coal mines - explosion-proof modified vehicles of automobiles. It has the characteristics of safety and explosion-proof, sensitive braking, stable and reliable, and meets the requirements of special working conditions in coal mines. Background technique [0002] In recent years, due to its fast and efficient characteristics, my country's trackless auxiliary transportation equipment has attracted more and more attention from coal mining enterprises. In the past ten years, it has formed a certain scale from scratch, from small to large, and has played an important role ...

AI Technical Summary

Problems solved by technology

Restricted by domestic technical and economic conditions, at present, the light transport vehicles used in most domestic mines are non-explosion-proof vehicles, and their braking system still adopts the vacuum-assisted shoe-drum brake system widely used in the automobile industry. Although the shoe-drum brake system It has the advantages of simple structure, low cost, and sufficient supply of accessories. However, due to exposure to the atmosphere, the hub of the ordinary shoe-drum brake is prone to heat during long-distance continuous braking and frequent use of braking, resulting in higher temperatures. Sparks may even be generated, which can easily cause dangers such as brake failure and detonation; and when the vehicle is driving on a road with water in the coal mine underground roadway, the friction pair of the brake is likely to be soaked in water, which can easily cause the vehicle brake to fail, and there is a serious safety hazard

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