Drilling device of roadway floor anchor rod

Abstract

The invention discloses a drilling device of a roadway floor anchor rod. The drilling device comprises a bottom frame (1), a working part (2), an upper frame (3) and a device positioning part (4); the upper frame is fixedly mounted on the bottom frame; the working part is mounted on the bottom frame and comprises a body (21), a front-back guide mechanism (22), a front-back positioning mechanism (23), a left-right guide mechanism (24), a left-right positioning mechanism (25), a drilling machine mounting frame (26) and a drilling machine (27); the device positioning part comprises a top positioning and supporting hydraulic cylinder (41), a bottom positioning and supporting hydraulic cylinder (42) and a control valve group (43); the control valve group is connected with the top positioning and supporting hydraulic cylinder and the bottom positioning and supporting hydraulic cylinder respectively. The drilling device of the roadway floor anchor rod, disclosed by the invention, is simple in structure and can realize rapid drilling operation on a roadway floor under the condition that a reversed supporting force is provided in a drilling process, so that the mounting speed of the anchor rod is wholly improved; the drilling device is adaptive to the requirements of rapidly forming a roadway.

Description

technical field [0001] The invention relates to a drilling device, in particular to a roadway floor bolt drilling device suitable for supporting the roadway floor by drilling bolts in a coal mine, 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, affected by the geological cycle movement, groundwater pressure and other factors, the surrounding rock is prone to uncoordinated deformation, especially for underground mining in coal mines, roadway roof, floor and two The surrounding rock will deform and move into the roadway. The phenomenon that the floor of the roadway or the goaf is raised upward is called the kick drum. The kick drum is a dynamic phenomenon that often occurs in the well and roadway. , mining impact, mining depth and geological structure, etc., the floor heave volume of some roadways...

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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