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A kind of mine drill pipe with anti-drop drill function

A functional and mining technology, applied in drill pipe, drill pipe, earth-moving drilling, etc., can solve problems such as drill drop and drill pipe joint fracture, and achieve the effect of simple structure, ensuring safety and high reliability

Active Publication Date: 2022-01-28
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects and deficiencies in the prior art, the present invention provides a mining drill pipe with the function of preventing drill pipe from falling out, so as to solve the problem of drill pipe dropout caused by the fracture of the drill pipe joint

Method used

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  • A kind of mine drill pipe with anti-drop drill function
  • A kind of mine drill pipe with anti-drop drill function
  • A kind of mine drill pipe with anti-drop drill function

Examples

Experimental program
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Effect test

Embodiment 1

[0048] This embodiment provides a drill pipe for mining with anti-drilling function, such as figure 1 As shown, it includes a rod body 1 , a male joint 2 and a female joint 3 respectively provided at both ends of the rod body 1 , an anti-drop connecting rod 4 provided in the male joint 2 , and a locking mechanism 5 provided in the female joint 3 .

[0049] Such as figure 2 As shown, the male connector 2 includes a male connector body 21 and a male connector central through hole 22. The male connector body 21 includes a male connector welding end surface 211, a male connector columnar outer wall 212, a male connector shoulder 213, and a male connector necking cone arranged in sequence. Segment 214 and the small end surface 215 of the male joint; the central through hole 22 of the male joint includes sequentially arranged: a first male joint through hole 221 close to the welding end face 211 of the male joint, a second male joint through hole 222 and a diameter close to the mal...

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Abstract

The invention discloses a mining drill pipe with the function of preventing drilling from falling out, which comprises a rod body, a male joint and a female joint respectively arranged at both ends of the rod body, an anti-dropping connecting rod provided in the male joint and a locking lock provided in the female joint. Mechanism; When connecting the drill pipe during drilling construction, the connecting rod is prevented from entering the inner hole of the fixing ring of the locking mechanism. When the male joint is screwed into the female joint to a certain depth, the small end surface of the male joint contacts the variable-section pin of the locking mechanism, and then presses The variable-section pin moves along the drill pipe axis, compresses the spring of the locking mechanism, and presses the bayonet pin of the locking mechanism to move radially; The pin enters the draw-in groove of the anti-falling connecting rod to complete the drilling operation. The invention realizes the axial connection between the anti-dropping connecting rod and the locking mechanism after the thread of the male joint is broken, and can lift the broken part with a deep drill pipe, effectively solving the problem of the drill pipe falling after the existing drill pipe is broken, and ensuring The safety of drilling construction.

Description

technical field [0001] The invention belongs to the field of underground drilling tools for coal mines, and in particular relates to a mining drill pipe with the function of preventing drill drop. Background technique [0002] Drilling is the most commonly used and most effective technical means for coal mine gas control, water damage prevention and ground stress relief, and drill pipe is an indispensable tool for drilling construction. During the drilling construction process, the drill rod transmits the power output by the drilling rig to the drill bit to achieve rock-breaking drilling. During the drilling process, the drill rod is subjected to various complex alternations such as feeding force, pulling force, torque, bending, vibration, friction, etc. Load, fatigue fracture will inevitably occur. [0003] At present, limited by the actual working conditions such as the space size of the underground roadway in the coal mine, the length of a single drill pipe is mainly 1m,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/00E21B17/043E21B17/046
CPCE21B17/00E21B17/043E21B17/046
Inventor 董昌乐王传留田东庄田宏杰朱宁李浩儒马少明居培
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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