Novel anchor rod drill bit of anchor cable

Abstract

The invention relates to the field of drilling exploration, in particular to a novel anchor rod drill bit of an anchor cable. The novel anchor rod drill bit comprises an outer drill bit, an inner drill bit and a driven drill ring, wherein the outer drill bit comprises an outer drill rod and a drill bit base body; four connecting rods are arranged between the outer drill rod and the drill bit basebody; gears are rotatably connected on the connecting rods; a limiting slot, a rotating slot and a drilling surface slot are sequentially formed inside the drill bit base body from top to bottom; theinner drill bit comprises an inner drill rod and a drill surface base body; the drill surface base body is fixedly connected to the tail end of the inner drill rod; the inner drill rod is rotatably connected in the outer drill rod; the drill surface base body is rotatably connected in the drill surface slot; a lower meshing gear is arranged on the upper surface of the drill surface base body; thedriven drill ring comprises a drill ring base body and a limiting ring; a rotary column is fixedly connected between the drill ring base body and the limiting ring; the rotary column is rotatably connected in the rotary slot; the limiting ring is rotatably connected in the limiting slot; an upper meshing gear is arranged on the lower surface of the limiting ring; and both the upper meshing gear and the lower meshing gear are engaged with the gears. The drill bit is smooth in drilling, improves drilling efficiency, and brings economic benefits.

Description

technical field [0001] The invention relates to the field of drilling, in particular to a novel cable and bolt drill bit. Background technique [0002] Anchor is the most basic part of roadway support in contemporary coal mines. It binds the surrounding rocks of the roadway together so that the surrounding rock can support itself. Anchor bits are drilling tools used in coal mines to fix anchors. . The roadways of railway tunnels and coal mines are usually supported by bolts. Therefore, efficient, fast and stable anchor bits play an important role. The quality of the bit is directly related to the drilling efficiency and drilling cost. In order to improve work efficiency and ensure drilling quality, the requirements for rock bolt bits are getting higher and higher. [0003] For example, the Chinese invention patent new diamond anchor drill bit with the authorized announcement number CN202970490U includes a threaded rod and a drill body connected to the threaded rod. The thr...

AI Technical Summary

Problems solved by technology

[0004] However, in actual use, it will be found that the rock debris on the inner wall of the drill hole wears the bit base of the rock drill very seriously. , It is prone to the phenomenon that the drill bit is stuck or even the drill bit is broken in the drill hole, which affects the subsequent drilling work, prolongs the construction period, and brings certain economic losses.

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