Stably-placed dustproof hydraulic prop

Abstract

The invention relates to a stably-placed dustproof hydraulic prop. The stably-placed dustproof hydraulic prop comprises a movable prop, a prop body and a valve nozzle, the movable prop is connected with the prop body, the valve nozzle is installed on the movable prop, a dustproof mechanism and two supporting mechanisms are further included, the supporting mechanisms comprise sliding rods, positioning ropes, springs, moving casing pipes, first connecting rods, second connecting rods and two third connecting rods, and the dustproof mechanism comprises a dustproof cover, a first annular air bag,a second annular air bag, a supporting pipe, a gas pipe, a limiting plate and a piston block. According to the stably-placed dustproof hydraulic prop, under the supporting effect of the supporting mechanism, the probability of rolling of the hydraulic prop is decreased, the stability of placement of the hydraulic prop is improved, through the protective effect of the dustproof mechanism, the probability of dust entering the valve nozzle is decreased, and the failure rate of the hydraulic prop is decreased; and compared with an existing dustproof mechanism, according to the dustproof mechanism,when the dustproof cover is taken down, the inner wall of the valve nozzle can further be cleaned, and the amount of the dust entering the inner part of the hydraulic prop is decreased.

Description

technical field [0001] The invention relates to the field of hydraulic equipment, in particular to a stable dust-proof hydraulic prop. Background technique [0002] The hydraulic prop refers to a single retractable prop that uses liquid pressure to generate working resistance and realize lifting and unloading. The hydraulic prop is mainly divided into suspension type, double telescopic suspension type, DN inner injection type and glass fiber reinforced plastic hydraulic prop. The hydraulic prop is made of It is composed of cylinder, live column, valve and other parts, among which the three-purpose valve is the heart of the external injection hydraulic prop, which is composed of a one-way valve, an unloading valve and a safety valve king. The valve is used for unloading and returning the hydraulic prop to the post, and the safety valve ensures that the hydraulic prop has constant resistance characteristics. [0003] The valve nozzle of the hydraulic prop in the prior art is ...

AI Technical Summary

Problems solved by technology

[0003] The valve nozzle of the hydraulic prop in the prior art is exposed to the air for a long time, so that the coal powder in the coal mine is easy to accumulate inside the valve nozzle. During the liquid injection process of the hydraulic prop, the coal powder is easily washed into the interior of the hydraulic prop. It is easy to cause blockage inside the hydraulic prop. Not only that, the shape of the hydraulic prop in the prior art is cylindrical. When the hydraulic prop is square on the ground with a slope, the hydraulic prop is prone to rolling. If the hydraulic prop collides with other objects , causing the hydraulic prop to be easily damaged

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