Underground coal mine bottom plate anchor rod drill stabilizing device

Abstract

The invention discloses an underground coal mine bottom plate anchor rod drill stabilizing device which comprises a bottom frame (1), a working component (2), an upper frame (3) and a device positioning component (4). The upper frame is fixedly installed on the bottom frame. The working component is installed on the bottom frame and comprises a body (21), front-back guiding through grooves (22), front-back positioning and locking nuts (23), left-right guiding through grooves (24), left-right positioning and locking nuts (25), a drilling machine mounting frame (26) and a drilling machine (27). The device positioning component comprises positioning supporting bidirectional telescopic hydraulic cylinders (41) and a control valve group (42), and two positioning supporting bidirectional telescopic hydraulic cylinder bodies are vertically and fixedly installed in the middle portion, in the front-back direction, of the upper frame or the bottom frame in a bilateral symmetry mode. The underground coal mine bottom plate anchor rod drill stabilizing device is simple in structure, reverse supporting force can be provided in the drilling process, the roadway bottom plate is drilled rapidly, accordingly, the installation speed of anchor rods is improved integrally , and the requirement for fast roadway formation is met.

Description

technical field [0001] The invention relates to a drilling device, in particular to a coal mine bottom plate anchor rod stabilizing device suitable for drilling and bolt support for roadway bottom plates in coal mines, and belongs to the technical field of underground support equipment. 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 and geological structure,...

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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