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Drilling tool

A drilling tool and drill bit technology, applied in drill pipes, drill pipes, drilling equipment, etc., can solve problems such as bolt damage, drill drop accidents, bolt loosening, etc., and achieve the effect of reducing drill drop accidents and reliable connection.

Inactive Publication Date: 2012-04-04
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, a drilling tool according to an embodiment of the present invention includes a drill rod 10 and a drill bit 20 connected to the drill rod, and the drill rod 10 and the drill bit 20 each have flange connection plates 11 and 21;

[0029] At least two openings 12 and 22 are respectively opened on the flange connecting disks 11 and 21 of the drill rod and the drill bit, and the opening direction of the opening faces away from the center of the flange connecting disk; The flange connection plate of the drill bit also has at least two pin holes respectively; 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-shaped card 30 connects the flange connection plates 11 and 21 of the drill rod and the drill bit; a pin shaft 40 for transmitting torque is pierced in the corresponding pin ...

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 guide.

[0036] see Figure 6 and Figure 7 As shown, the drilling tool of this embodiment includes a drill rod 10, a drill guide 50 connected to the drill rod, and a drill bit 20 connected to the drill guide 50; the drill rod and the drill bit each have a flange connecting plate; the upper end and the lower end of the drill guide also have flange connecting plates respectively; 11 shown in the figure is the flange connecting plate of the drill rod; the flange connecting plate of the drill rod, the drill bit guide and the drill bit There are at least two openings on each, and the opening direction of the openings is away from the center of the flange connection plate; Figure 8 Shown in 12 is the opening on the flange connection plate of drill rod; Also offer at least two pin holes respectively on t...

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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 for a shaft drilling rig. Background technique [0002] At present, flange bolt connection is usually used for the drilling tool connection structure of the shaft drilling rig. 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, the bolts are easy to loosen, causing the bolts to be damaged by the shear force, and a drill drop accident occurs. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a drilling tool with reliable connection and capable of reducing drill drop accidents. [0004] In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: ...

Claims

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Application Information

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Patent Type & Authority Applications(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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