Self-moving diagonal positioning drilling device for coal mine roadway base plate anchor rods

Abstract

The invention discloses a self-moving diagonal positioning drilling device for coal mine roadway base plate anchor rods comprising a base frame(1), a working part (2), an upper rack (3) and a device positioning part (4); the upper rack is fixedly installed on the base frame; the working part is installed on the base frame comprising a body(21), a front and rear guide groove (22), a front and rear positioning clamp (23), a left and right guide groove (24), a left and right positioning clamp (25), a driller mounting rack (26) and a driller (27); the device positioning part comprises a top positioning support hydraulic cylinder(41), a bottom positioning support hydraulic cylinder (42), a control valve assembly and a pumping station (43), wherein the control valve assembly and the pumping station are connected with the top positioning support hydraulic cylinder and the bottom positioning support hydraulic cylinder. The drilling device for base plate anchor rods can perform quick drilling on roadway base plates on the premise of providing inverse support force during drilling process to increase overall anchor rod mounting speed which is suitable for quick construction of roadways.

Description

technical field [0001] The invention relates to a drilling device, in particular to a coal mine self-moving and diagonally positioned roadway bottom plate bolt drilling device suitable for drilling and bolting the bottom plate of the 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,...

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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