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A Swingable Asymmetric Rock Hole Reaming Drilling Tool

An asymmetric, rock hole technology, used in drill bits, drilling equipment, earthwork drilling, etc., can solve problems such as local hole reaming in rock mass

Inactive Publication Date: 2018-01-09
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a swingable asymmetric rock hole reaming drilling tool, which solves the problem of local reaming in rock mass

Method used

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  • A Swingable Asymmetric Rock Hole Reaming Drilling Tool
  • A Swingable Asymmetric Rock Hole Reaming Drilling Tool
  • A Swingable Asymmetric Rock Hole Reaming Drilling Tool

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Embodiment Construction

[0022] The present invention will be described in detail below in combination with specific embodiments.

[0023] The swingable asymmetric rock hole reaming drilling tool of the present invention, when it encounters the rock surface at the bottom of the hole, the inclined surface drilling tool will open the drill bit while cutting the rock under spinning, and gradually expand the range of cutting rock; After opening, with the spinning of the drill bit, the drill bit will continue to maintain a larger diameter rock cutting range, forming a section of drill hole with enlarged diameter, so as to achieve the purpose of bottom expansion (local reaming).

[0024] like Figure 1 to Figure 3 As shown, the drilling tool consists of a cutting layer 1, a base 2 and a base 3. The cutting layer 1 is composed of needle-like or flaky cemented carbide impregnated in the carcass, and is inlaid on the upper slope of the base 2 through screws 4 (the inlaying method can be grooved on the edge of...

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Abstract

The invention discloses a swinging asymmetrical rock hole bottom-enlarging drilling tool. A cutting layer is inlaid or welded on the upper bevel of a base; the bottom of the base is provided with a semi-circular disc tenon; the semi-circular disc tenon is arranged in a mortise of the base and is rotationally articulated with the base through an articulated screw hole at the center of circle of the semi-circular disc tenon by using an articulated screw; the base with the cutting layer can rotate; a hollow hole is formed in the base; one end of the hollow hole is communicated with the mortise, and the other end of the hollow hole is communicated with a cooling water channel in a drilling rod; a water diversion hole is formed in the base; and one end of the water diversion hole is a water inlet positioned at the edge of the disc tenon, and the other end of the water diversion hole is connected with a water outlet hole in the cutting layer. The drilling tool disclosed by the invention can be widely applied to design and construction of rock bottom-enlarged anchor rods and rock bottom-enlarged piles.

Description

technical field [0001] The invention belongs to the technical field of civil engineering equipment and mining engineering equipment, and relates to a swingable and asymmetric rock hole bottom reaming drilling tool. Background technique [0002] As we all know, the pull-out force of the enlarged head anchor (the anchor includes the anchor cable, the same below) is much greater than that of the equal-diameter anchor, and the bearing capacity of the expanded-bottom pile is also much greater than that of the equal-diameter pile. The realization of enlarged head bolt and bottom expansion pile is important to solve the problem of local reaming at the bottom of the hole. At present, the local reaming in the soil has been fully realized, but there is no report on the realization of the local reaming in the rock mass. [0003] Partial reaming in rocks, especially the three small bolts in coal mines ("three small" refers to small-diameter drill bits, small-diameter bolt holes, and sm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/32E21B10/46E21B10/60
Inventor 邹正盛郑清洁王树仁琚晓冬秦莞臻顿志林
Owner HENAN POLYTECHNIC UNIV