Tool driving or impacting – Advance causing or controlling means – Driven flexible member causes advance
Patent
1997-09-16
1999-11-23
Vo, Peter
Tool driving or impacting
Advance causing or controlling means
Driven flexible member causes advance
173141, B23Q 500
Patent
active
059882980
ABSTRACT:
A drilling device has a drilling mast and a movable drifter thereon with a drill rod stabilizing device for stabilizing drill rods in position during drilling. The stabilizer travels along the mast along with the drifter, and includes a locking arm that automatically opens and closes the stabilizer to allow passage of drill rods into an out of the drill line from storage, while supporting the drill rods during drilling. In a substantially vertical drilling position, the stabilizer is moved downwardly by gravity, and upwardly by the drifter's drive chain, which is retained in contact with the stabilizer by a pick-up link on the drive chain contacting stop blocks on the stabilizer. In a substantially horizontal drilling position, the stabilizer is moved in a return direction by the pick-up link and stop block combination. The stabilizer is advanced in the opposite direction by the drifter's pick-up link, which is retained in contact with the stabilizer by a pair of spaced-apart rollers on the stabilizer that frictionally contact and retain the pick-up link and stabilizer together.
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Cheng Eugene Y. T.
Land, III J. George
Calve James P.
Ingersoll-Rand Company
Selko John J.
Ussai Mark A.
Vo Peter
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