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Drilling tool

A technology of drilling tools and bits, which is applied in the direction of drill pipes, drill pipes, drilling equipment, etc. It can solve problems such as drill drop accidents, bolt damage, and bolt looseness, and achieve reliable connection and reduce the occurrence of drill drop accidents.

Inactive Publication Date: 2013-11-27
CHINA COAL MINE CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the drilling process, due to the vibration of the drilling tool, the bolts are easy to loosen, causing the bolts to be damaged by the shear force, and the drill drop accident occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see image 3 and Figure 4 As shown, an embodiment of the present invention is a drilling tool, comprising a drill rod 10 and a drill bit 20 connected with the drill rod, the drill rod 10 and the drill bit 20 respectively have flange connection disks 11 and 21;

[0029] At least two openings 12 and 22 are respectively opened on the flange connection plates 11 and 21 of the drill pipe and the drill bit, and the opening directions of the openings face away from the center of the flange connection plate; At least two pin holes are respectively opened on the flange connection plate of the drill bit; the flange connection plate 11 of the drill pipe is opposite to the flange connection plate 21 of the drill bit, and the flange connection plate of the drill pipe The opening 12 and the pin hole on the drill bit correspond to the opening 22 and the pin hole on the flange connection plate of the drill bit; an I-shaped card 30 is arranged in the corresponding opening; the I-shape...

Embodiment 2

[0035] The difference between this embodiment and Embodiment 1 is that the drill bit is not directly connected to the drill rod, but is connected to the drill rod through a drill bit guide.

[0036] see Image 6 and Figure 7 As shown, the drill tool of this embodiment includes a drill rod 10, a drill bit guide 50 connected with the drill rod, and a drill bit 20 connected with the drill bit guide 50; the drill rod and the drill bit respectively have flanges connecting plate; the upper and lower ends of the drill guide also have flange connecting plates respectively; 11 shown in the figure is the flange connecting plate of the drill pipe; the flange connecting plate of the drill pipe, the drill guide and the drill bit At least two openings are respectively opened on the upper parts, and the opening directions of the openings are facing away from the center of the flange connection plate; Figure 8 12 shown in the middle is the opening on the flange connection plate of the dri...

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Abstract

The invention discloses a drilling tool, and relates to the technical field of a drilling machine, aiming at solving the technical problems of realizing reliable connection and reducing drill fall-off accidents. The drilling tool comprises a drill rod and a drill bit connected with the drill rod, wherein flange connection plates of the drill rod and the drill bit are respectively provided with at least two openings and at least two pin holes; the flange connection plates of the drill rod and the drill bit are in butt joint; the openings and the pin holes which are arranged on the flange connection plate of the drill rod correspond to those arranged on the flange connection plate of the drill bit; the corresponding openings are respectively provided with an I-shaped block; the flange connection plates of the drill rod and the drill bit are connected with each other by the I-shaped blocks; and pin shafts used for transferring torque pass through the corresponding pin holes. The drilling tool is applicable to construction of large holes in large and medium-sized projects or other projects of mines.

Description

technical field [0001] The invention relates to the technical field of drilling rigs, in particular to a drilling tool of a vertical well drilling rig. Background technique [0002] At present, the connection structure of drilling tools for vertical shaft drilling rigs is usually connected by flange bolts. see figure 1 and figure 2 As shown, the flange connection plate 1 of the drill pipe and the flange connection plate 2 of the drill bit are connected by bolts 3 . During the drilling process, due to the vibration of the drilling tool, it is easy to loosen the bolts, causing the bolts to be damaged by shearing force, resulting in a drill drop accident. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide a drilling tool which is reliable in connection and can reduce the occurrence of drilling accidents. [0004] In order to solve the above-mentioned technical problems, the technical scheme adopted in the present i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/04
Inventor 蔡鑫史基盛丁明郑翔鳎朱冬林
Owner CHINA COAL MINE CONSTR GRP
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