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Auxiliary connecting device for drill rod assembly for strong mine pressure coal mine

A technology of auxiliary connecting device and drill pipe assembly, which is applied to drill pipe, drill pipe, drilling equipment, etc., can solve the problems of easy damage of drill pipe and scrapped drill pipe, and achieve the effect of not easy to damage, improving service life and convenient connection.

Inactive Publication Date: 2017-10-20
程荣书
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the above technical problems, the present invention provides an auxiliary connection device for drill pipe assemblies in high-pressure coal mines, thereby solving the problem that the tail of the drill pipe is easily damaged when the existing drill pipe is used in high-pressure coal mines, so that the drill pipe is scrapped. The auxiliary connection device for the drill pipe assembly of the strong mine pressure coal mine has achieved the effect of improving the service life of the drill pipe, reducing the production cost of the coal mine, and improving the work efficiency of the workers when the drill pipe is used in the strong mine pressure coal mine.

Method used

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  • Auxiliary connecting device for drill rod assembly for strong mine pressure coal mine
  • Auxiliary connecting device for drill rod assembly for strong mine pressure coal mine
  • Auxiliary connecting device for drill rod assembly for strong mine pressure coal mine

Examples

Experimental program
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Effect test

Embodiment 1

[0025] An auxiliary connecting device for a drill pipe assembly of a high pressure coal mine, characterized in that it comprises a conversion device 2, a drill tail 3, and a connecting device 1 connecting the conversion device 2 and the drill tail 3; the drill tail 3 includes a card hole A4. Hollow tube 5 at the front end of the drill tail, rear end 6 of the drill tail, and stop posts 7; the clamping hole A4 is arranged in the middle of the hollow barrel 5 at the front end of the drill tail; the stop posts 7 are welded to the middle of both sides of the rear end 6 of the drill tail The conversion device 2 includes a front conversion cylinder 8 and a rear conversion cylinder 9; the middle of the front conversion cylinder 8 is provided with a card hole B10; the middle of the rear conversion cylinder 9 is provided with a card hole C11; both ends of the connecting device 1 The connecting body is respectively sleeved into the rear conversion cylinder 9 and the front end hollow cylind...

Embodiment 2

[0027] This embodiment is further optimized based on embodiment 1. Both ends of the connecting device 1 are provided with spring posts 15; the top of the front conversion cylinder 8 is welded with a disassembly device 12; the disassembly device 12 is provided with two spring posts 13 A thimble 14 is provided between the two spring columns 13; the thimble 9 is located directly above the hole B10, so that the conversion device 2 and the drill rod can be easily disassembled.

Embodiment 3

[0029] This embodiment is further optimized based on embodiment 1. The inner diameter of the rear conversion cylinder 9 and the inner diameter of the hollow cylinder 5 at the front end of the drill end are equal to the outer diameter of the connecting body of the connecting device 1, so that the conversion device 2 and the drill tail 3 can rotate coaxially with high precision .

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Abstract

The invention relates to the field of coal mine machinery and provides an auxiliary connecting device for a drill rod assembly for a strong mine pressure coal mine. The auxiliary connecting device comprises a conversion device, a drill tail and a connecting device body for connecting the conversion device with the drill tail; the drill tail comprises a clamping hole A, a drill tail front end hollow cylinder, a drill tail rear end and a baffle column; the clamping hole A is formed in the middle of the drill tail front end hollow cylinder; and the baffle column is welded in the middles of the two sides of the drill tail rear end. The conversion device comprises a front conversion cylinder and a rear conversion cylinder; a clamping hole B is formed in the middle of the front conversion cylinder; a clamping hole C is formed in the middle of the rear conversion cylinder; connecting main bodies of the two ends of the connecting device body are sleeved with the rear conversion cylinder and the drill tail front end hollow cylinder correspondingly to connect the conversion device with the drill tail; and the inner diameter of the front conversion cylinder is different from that of the rear conversion cylinder. The auxiliary connecting device has the effects that the drill tail can be suitable for drill rods of various models and can protect the various drill rods, the coal mine production cost is reduced, and the working efficiency of workers is improved.

Description

Technical field [0001] The invention relates to an auxiliary connecting device used for a drill pipe assembly of a strong underground coal mine, and belongs to the field of coal mine machinery. Background technique [0002] In the prior art, when the drill pipe is used in the coal mine, the tail of the drill pipe is directly inserted into the rotary head of the hand-held drilling rig for use. However, in the strong mine pressure coal mine, due to the excessive pressure, the drill pipe is used for drilling. The shear force of the rod is greater than the shear force experienced in the non-strong mine pressure coal mine, and it is extremely easy to damage the drill teeth at the tail of the drill rod and the hand-held drill head, resulting in the scrap of the drill rod and increasing the production cost of the coal mine. , And affect the work efficiency of workers. Summary of the invention [0003] Based on the above technical problems, the present invention provides an auxiliary con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/04
CPCE21B17/04
Inventor 程荣书
Owner 程荣书