Underground coal mine self-moving four-stand-column locating bottom plate anchor rod drilling trolley

Abstract

The invention discloses an underground coal mine self-moving four-column positioning floor bolt drilling trolley, which comprises a bottom frame (1), a working part (2), an upper frame (3) and a device positioning part (4); the upper frame is fixedly installed on on the bottom frame; the working parts are installed on the bottom frame, including the main body (21), the front and rear guide slots (22), the front and rear positioning lock nuts (23), the left and right guide slots (24), the left and right positioning lock nuts (25 ), drilling rig mounting frame (26) and drilling rig (27); device positioning components include positioning support two-way telescopic hydraulic cylinder (41) and control valve group and pumping station (42), four positioning support two-way telescopic hydraulic cylinder cylinder center symmetrical It is fixed vertically on the diagonal position of the upper frame or the lower frame. The coal mine self-moving four-column positioning bottom plate anchor drilling jumbo can provide reverse support force during the drilling process and quickly drill the roadway bottom plate, improve the bolt installation speed, and meet the requirements of rapid roadway formation.

Description

technical field [0001] The invention relates to a drilling trolley, in particular to a coal mine underground self-moving four-column positioning floor bolt drilling trolley suitable for drilling and bolting the roadway floor in a coal mine, which belongs to the underground support equipment technology field. Background technique [0002] Due to the different characteristics of the rock mass at different depths around the roadway and the different stress environments, the surrounding rock is prone to uncoordinated deformation due to factors such as geological periodic movement and groundwater pressure, especially for underground mining in coal mines. The surrounding rock will deform and move into the roadway. The phenomenon that the floor of the roadway or the gob floor rises upwards is called the floor heave. The floor heave is a dynamic phenomenon that often occurs in the mine roadway. It is related to the nature of the surrounding rock. , impact of mining, mining depth an...

AI Technical Summary

Problems solved by technology

[0004] Improve the strength of the surrounding rock of the floor, mainly including floor grouting, floor bolt support, etc. When using bolt support for the floor, it is necessary to drill the floor first. The traditional method needs to be above the drill pipe during the drilling process. Wooden columns or reverse air legs are used to support the roof of the roadway to provide reverse support. However, in order to ensure that the bottom plate of the roadway will not be damaged before the anchor is installed, the anchor must be installed within a certain distance from the excavation face. The size of this distance is related to the nature of the floor rock, and generally should not be greater than 10 meters. At the same time, in order to ensure that the roadway excavation speed is not affected, the bolt installation speed is usually fast, and this traditional drilling method is not only complicated and labor-intensive. The consumption of material resources is large, and the speed of drilling and installing bolts is slow and the efficiency is low, which is not suitable for the requirements of rapid roadway formation

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