Four-upright pillar positioning type base plate and anchor rod drilling device for coal mines

Abstract

The invention discloses a four-upright pillar positioning type base plate and anchor rod drilling device for coal mines. The drilling device comprises a base frame (1), a working component (2), an upper frame (3) and a device positioning component (4), wherein the upper frame is fixedly mounted on the base frame; the working component is mounted on the base frame and comprises a body (21), front and back guide grooves (22), front and back positioning flanges (23), left and right guide grooves (24), left and right positioning flanges (25), a drilling machine mounting rack (26) and a drilling machine (27); and the device positioning component comprises four positioning and supporting bidirectional telescopic hydraulic cylinders (41) and a control valve set (42), and the centers of cylinder bodies of the four positioning and supporting bidirectional telescopic hydraulic cylinders are symmetrically, vertically and fixedly mounted on the diagonal line of the upper frame or the base frame. According to the four-upright pillar positioning type base plate and anchor rod drilling device for the coal mines, a base plate of a tunnel can be rapidly drilled when a reverse support force is supplied during the drilling, so that the mounting speed of the anchor rod is integrally increased, thereby meeting the requirement of rapid tunnel formation.

Description

technical field [0001] The invention relates to a drilling device, in particular to a coal mine four-column positioning bottom plate bolting device suitable for drilling and bolting the bottom plate of a roadway 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, 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 s...

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

Images