Mine drill stem

Abstract

The invention discloses a mine drill stem. A plurality of mine drill stem components are connected together to form the mine drill stem, each mine drill stem component comprises a hollow body, both ends of the hollow body are provided with an external taper thread and an internal taper thread which are quenched under high frequency and matched with each other, and the joint faces of the external taper thread and the internal taper thread are tapered faces. The mine drill stem component has a simple structure, and is convenient to produce in batches; because drilling stem connection does not need welding, the environment is protected, moreover, the connected parts cannot be easily broken, and thereby the service life of the drill stem is greatly prolonged; the overall rigidity of the drill stem is high, the drill stem can resist wear, cannot leak water and gas, and can be prevented from being bent and broken by external force in the process of drilling, and thereby the service life of the drill stem is further prolonged; since the drill stem components are connected together through the screw threads, the drill stem components can be conveniently assembled and disassembled completely or partially, which is favorable for the maintenance and replacement of the drill stem; practice proves that the welded parts can be broken and the welded drill stem needs to be replaced when the welded drill stem is hundreds of meters long, however, the non-welded drill stem disclosed by the invention cannot be bent and broken when the footage is up to 8000 meters.

Description

technical field [0001] The invention belongs to the technical field of drilling tools, in particular to a mining drill pipe. Background technique [0002] The drill rod is a rod-shaped or tubular part that transmits power to the drill bit and enters the drill hole with the drill bit. Generally, coal mining enterprises drill deep holes and require high power drilling rigs, and the drill pipes are mostly made of thin-walled seamless pipes. Falling off, salvaging drilling tools, repairing or replacing drill pipes, etc. have seriously affected production efficiency. Therefore, coal mine production enterprises need more durable drill pipes that are easy to repair or replace. [0003] With the development of science and technology, the drill pipes used by most coal mining enterprises now include male button drill pipes, intermediate connecting rods, and female button drill pipes. Buckle the drill pipe. The drill pipe obviously has many shortcomings, such as the drill pipe is we...

AI Technical Summary

Problems solved by technology

The drill pipe obviously has many shortcomings, such as the drill pipe is welded, which is not easy to repair or replace the drill pipe; at the same time, the welding is not environmentally friendly, and the weld is prone to breakage, which affects the service life of the drill pipe and increases the maintenance of the drill pipe times, reducing the production efficiency of coal mining enterprises

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