ANCHORING AND ANTI-CLOGGING DRILL ROD FOR COAL MINE FLOOR
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United States of America Patent
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app pub date -
Jan 25, 2016
filing date -
Jul 26, 2013
priority date (Note) -
Abandoned
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Abstract
An anchoring and anti-clogging drill rod for a coal mine floor and methods thereof are provided. The anchoring and anti-clogging drill rod includes a hollow drill pipe and a hollow sleeve configured inside the hollow drill pipe. A front joint is configured at a front end of the hollow drill pipe. A back joint is configured at a back end of the hollow drill pipe. The hollow sleeve is wound with a spiral connection line in a direction opposite to a rotation direction of the anchoring and anti-clogging drill rod during drilling. A spiral-shaped space is formed between the spiral connection line and an inner chamber of the hollow drill pipe.
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