Normally closed type explosion-proof wet-type braking system

Abstract

The invention discloses a normally closed type explosion-proof wet-type braking system. The normally closed type explosion-proof wet-type braking system comprises an oil tank, an electric oil pump, a prefill valve, a manual brake valve, a foot brake valve and shaft end wet-type brakes, wherein the electric oil pump, the prefill valve, the manual brake valve, the foot brake valve and the shaft end wet-type brakes are sequentially communicated through an oil pipe; an oil inlet of the electric oil pump communicates with an oil outlet of the oil tank through a first oil absorption filter; an oil port of the prefill valve, an oil port of the manual brake valve and an oil port of the foot brake valve are separately communicated with the oil tank through the oil pipe; brake is performed through releasing the oil pressure on the shaft end wet-type brakes; and the shaft end wet-type brakes comprise a front wheel shaft end wet-type brake and a rear wheel shaft end wet-type brake. The normally closed type explosion-proof wet-type braking system disclosed by the invention is safe in using and simple and reliable in structure.

Description

Technical field [0001] The invention relates to a braking system, in particular to a normally closed explosion-proof wet braking system used for mining vehicles and engineering machinery. Background technique [0002] As the country pays more and more attention to the safety and reliability of mining vehicles and construction machinery, the requirements for the safety and reliability of the braking system are also increasing. Traditional disc brakes and drum brakes, mining vehicles work underground It is easy to produce sparks at times, and it is extremely dangerous in the underground, and the underground environment is relatively narrow. The reliability of traditional disc brakes and drum brakes is insufficient. In this case, the wet brake system has become the best choice for mining vehicle braking so far, but the existing wet brake systems are always open, which are divided into parking brakes and service brakes during use. Two sets of brakes respectively control the central ...

AI Technical Summary

Problems solved by technology

[0002] As the country pays more and more attention to the safety and reliability of mining vehicles and construction machinery, the requirements for the safety and reliability of the braking system are also increasing. Traditional disc brakes and drum brakes, mine vehicles work underground It is easy to generate sparks, and it is extremely dangerous underground, and the underground environment is relatively narrow, and the reliability of traditional disc brakes and drum brakes is insufficient.

In this case, the wet braking system has become the only choice for mining vehicle braking so far, but the existing wet braking systems are all normally open, which are divided into parking brakes and service brakes in use. The two sets of brakes respectively control the central wet brake and the axle end wet brake. When parking on a slope, the manual parking brake is required to control the central wet brake. When the parking brake or the central wet brake fails, the parking brake will not function. and because the current wet brake system includes two sets of wet brakes, it is not only unsafe and unreliable, but also has a relatively complicated structure; in addition, sparks may be generated when the friction plates of traditional wet brakes work. In the coal mine environment, especially the coal mine explosive environment medium, highly prone to explosion

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