Early warning hydraulic prop device

Abstract

An early warning hydraulic prop device belongs to the technical field of hydraulic prop. The early warning hydraulic prop device is characterized in that the device comprises a top cover assembly, a prop, a mechanical chuck, a hollow hydraulic cylinder, a hydraulic spring chuck, a hollow base, and a early warning reservoir assembly, wherein the lower portion of the top cover assembly is threadedly connected with the upper end of the prop, the mechanical chuck sleeves on the upper portion of the pillar, the bottom flange of the mechanical chuck is connected with the upper end flange of the hollow hydraulic cylinder through a bolt, the bottom flange of the hollow hydraulic cylinder is connected with the upper end flange of the hydraulic spring chuck through a bolt, the bottom flange of the hydraulic spring chuck is connected with the upper end flange of the hollow base through a bolt, the prop penetrates through the hollow chambers of the mentioned members, the sting of the early warning assembly is installed on the outer wall of the hollow hydraulic cylinder through a mounting bracket, and a smell bag is installed on the upper end flange of the hollow hydraulic cylinder through a mounting flange. The early warning hydraulic prop device has the advantages of being adjustable and adaptable, having enhanced safety due to the increased friction with the rock, and reducing the danger of accidents when the early warning hydraulic prop device is used.

Description

technical field [0001] The invention belongs to the technical field of hydraulic props, and in particular relates to an early warning hydraulic prop device. Background technique [0002] At present, in coal mining, mining and tunnel construction at home and abroad, the working face is mostly supported by a single hydraulic prop, which mainly has the following disadvantages: ① The height of the hydraulic prop support in the prior art is limited by the length of the hydraulic cylinder. When the height of the coal mining area changes, it is necessary to use hydraulic props of different heights for support, which has poor versatility; ②The hydraulic props of the prior art lose their supporting capacity after a hydraulic system failure occurs, and the safety is poor; ③When the props are hit by the mine roof When the pressure is applied, there is no early warning function, and the safety protection and emergency response ability of the staff is weak; ④ When the heavy-load impact i...

AI Technical Summary

Problems solved by technology

[0002] At present, in coal mining, mining and tunnel construction at home and abroad, the working face is mostly supported by a single hydraulic prop, which mainly has the following disadvantages: ① The height of the hydraulic prop support in the prior art is limited by the length of the hydraulic cylinder. When the height of the coal mining area changes, it is necessary to use hydraulic props of different heights for support, which has poor versatility; ②The hydraulic props of the prior art lose their supporting capacity after a hydraulic system failure occurs, and the safety is poor; ③When the props are hit by the mine roof When the pressure is applied, there is no early warning function, and the safety protection and emergency response ability of the staff is weak; ④ When the heavy-load impact is applied, the discharge flow of the three-purpose valve in the prior art is limited, which will cause damage to the hydraulic system and poor safety; ⑤ The existing technology does not target The top and bottom of the roadway rock layer are designed with complex shapes and the friction surface of the pillar top cover and the bottom foot is prone to dumping accidents and poor safety; ⑥ The existing technology does not address the impact of rock formation vibration and mining impact during the mining process of the roadway, which easily causes the piston of the hydraulic cylinder to vibrate and generate heat Cause internal leakage, the life of the hydraulic system is shorter

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