Underground coal mine roadway bottom plate anchor rod drilling device with self-moving diagonal cross location function

Abstract

The invention discloses an underground coal mine roadway bottom plate anchor rod drilling device with a self-moving diagonal cross location function. The drilling device comprises an underbed (1), a working component (2), an upper frame (3) and a device location component (4); the upper frame is fixedly installed on the underbed, the working component is installed on the underbed and comprises a body (21), front-back guide through grooves (22), front-back location locking nuts (23), left-right guide through grooves (24), left-right location locking nuts (25), a drilling machine installing frame (26) and a drilling machine(27). The device location component comprises top location supporting hydraulic cylinders (41), bottom location supporting hydraulic cylinders (42) and a control valve bank and pump station (43), and the control valve bank and pump station are connected with the top location supporting hydraulic cylinders and the bottom location supporting hydraulic cylinders respectively. On the premise of providing reverse supporting force, the underground coal mine roadway bottom plate anchor rod drilling device with the self-moving diagonal cross location function fast drill a roadway bottom plate, 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 underground self-moving and diagonally cross-positioning roadway floor bolting device suitable for drilling and bolting the bottom plate of the roadway in a coal mine, which belongs to the technology of underground support equipment 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 ...

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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