Low coal seam coverture type hydraulic support

Abstract

The invention relates to a shield hydraulic support of thin coal seam, comprising roof beam, shield beam, substructure, upright post, balance jack, front connecting bar, back connecting bar, advancing jack and control valve group. Side push jack and long-and-short guide bars are set in roof and shield beams. Side shield plates are set on roof and shield beams. The roof beam is joined with the shield beam and up-and-down ends of balance jack are set on roof and shield beams respectively. Up-and-down ends of upright post are set on the bottom of roof beam and substructure. Upper ends of front and back connecting bars are joined with the back end of shield beam respectively and lower ends of them are joined with the substructure respectively. Advancing jack is set on the substructure. Control valve group is set at the bottom of roof beam and two card holders with eight holes is set at the bottom of roof beam. The component of invention is made of Q460 high intensity steel plate, which is provided with light weight and small cubage. The lifting height of roof beam is among 0.9m-2.0m so that mechanical mining for thin coal seam is realized.

Description

technical field [0001] The invention relates to mine supporting equipment, in particular to a thin coal seam shielding hydraulic support. Background technique [0002] The fully mechanized mining hydraulic support is one of the main equipments in the comprehensive mechanized coal mining face of the coal mine. It is used in conjunction with the shearer and the conveyor. It can move forward by itself and advance the coal mining face. At present, the hydraulic supports used in coal seam mining in mines are made of 16Mn materials, including top beams, shield beams, bases, two columns, front connecting rods, rear connecting rods, push jacks and control valves. group; the rear end of the top beam and the front end of the cover beam are hingedly connected through a hinge shaft; the upper end of the column is installed on the shaft seat on the bottom surface of the top beam through a pin shaft, and is connected in relative rotation with it, and the lower e...

AI Technical Summary

Problems solved by technology

This kind of hydraulic support is suitable for the mining of medium and thick coal seams, but the lifting space of the roof beam of this kind of hydraulic support is small, for the mining height is low, the working space of the working face is narrow, especially the coal seam is deeply buried, the geological conditions are complex, there are many faults, and the mine The thin coal seam with heavy pressure has poor use effect; in addition, the hydraulic pipeline layout of this hydraulic support is messy and irregular, which is easy to cause confusion and inconvenience during actual use

Images