Hydraulic support for thin seam mining

Abstract

The invention relates to the technical field of coal mining, and discloses a hydraulic support for thin seam mining.The hydraulic support comprises a base, wherein front upright posts are fixedly mounted at the middle end of the top surface of the base, rear upright posts are fixedly mounted at the rear end of the top surface of the base, a top beam is fixedly mounted at the tops of the front upright posts and the rear upright posts, and a shield beam is fixedly connected to the back of the top beam, The bottom of the shield beam is movably connected with the base, a pushing jack is movably mounted at the middle of the base, a base gap bridge is fixedly mounted at the front end of the top surface of the base, ejection grooves are formed in the bottom of the front end of the base, movable ejection columns are movably connected to the top walls of the ejection grooves in a sleeving manner, and rotating wheels are movably mounted at the bottom of the movable ejection columns. A telescopicdriving device is movably mounted at the middle of the base gap bridge, a push rod can be prevented from being bent by arranging the rotating pushing jack, long service life of the push rod can be guaranteed, besides, the base is lifted up through the telescopic driving device and the movable ejection columns to move conveniently, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a hydraulic support for thin coal seam development. Background technique [0002] Nowadays, the mining of coal mine resources is very wide, and the mining of different coal seams will be applied to hydraulic supports, which use their own structural characteristics to withstand the mine pressure of the mining coal seam, and need to move after mining a section to realize the support of the next section. When mining coal mines, moving the hydraulic support needs to ensure that the movement is consistent and fast and convenient. However, there are some problems with the existing hydraulic supports, especially when mining thin coal seams: [0003] The base of the hydraulic support is a large piece with a large bottom surface area, and the resistance it receives when moving will be very large, resulting in too slow movement and affecting work efficiency, and the thin coal seam itse...

AI Technical Summary

Problems solved by technology

[0003] The base of the hydraulic support is a large piece with a large bottom surface area, and the resistance it receives when moving will be very large, resulting in too slow movement and affecting work efficiency, and the thin coal seam itself is softer than the thick coal seam, so It will greatly increase the resistance when moving, and some soft coal will be stuck in the gap of the base, and the chemical reaction in it for a long time will affect the base and reduce the service life; at the same time, due to the mining of different sections of the coal seam It cannot be controlled to be horizontal, so when moving the hydraulic support, there may be a height difference between the scraper conveyor connected to the front end of the hydraulic jack and the rear end base. This height difference will cause the extension end of the hydraulic jack and the hydraulic end The bending angle will greatly reduce the service life of the hydraulic jack, and there will be safety hazards, and the contraction of the hydraulic jack will be affected by the bending and slow down when moving, affecting work efficiency

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