Base plate anchor rod drilling trolley for self-moving diagonally positioning tunnel of underground coal mine

Abstract

The invention discloses a base plate anchor rod drilling trolley for self-moving diagonally positioning a tunnel of underground coal mine. The base plate anchor rod drilling trolley comprises a chassis (1), a working part (2), an upper frame (3) and a device positioning part (4), wherein the upper frame is fixedly mounted on the chassis; the working part is mounted on the chassis and comprises a main body (21), a front and back guide through slot (22), a front and back positioning locking nut (23), a left and right guide through slot (24), a left and right positioning locking nut (25), a drilling rig mounting frame (26) and a drilling rig (27); the device positioning part comprises a top positioning support hydraulic cylinder (41), a bottom positioning support hydraulic cylinder (42) and a control valve set and a pump station (43); the control valve set and the pump station are respectively connected with the top positioning support hydraulic cylinder and the bottom positioning support hydraulic cylinder. The base plate anchor rod drilling trolley can be used for quickly drilling a tunnel base plate under the condition of supplying a reverse support force in a drilling process, the mounting speed of the anchor rod is increased and the requirement for quickly forming tunnel is met.

Description

technical field [0001] The invention relates to a drilling trolley, in particular to a coal mine underground self-moving and diagonally positioned roadway floor bolt drilling trolley which is suitable for drilling and bolting the roadway bottom plate in a coal mine, and belongs to underground support equipment technology 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 of min...

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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