Rock drilling machine

Details Rock drilling machine Rock drilling machine

1976-12-09

1978-07-25

Hafer, Robert A.

Tool driving or impacting

Power paths to plural tools from single drive

173164, 408124, E21B 100

Patent

active

041024095

ABSTRACT:
A rock drilling machine, e.g. for drilling with a diamond core bit, has a first power rotated chuck for gripping the drill string. The first chuck can be swung offset the drilling axis into a position to grip an input shaft of a reduction gearing coupled to a second chuck. The first chuck and its motor can thus rotate also the second chuck which is used for example for drilling down a borehole lining pipe. The two chucks are mounted on a common slide that is power feedable back and forth along a feed beam or mast.

REFERENCES:
patent: 1513388 (1924-10-01), Greve
patent: 2552234 (1951-05-01), Thibodeav
patent: 2942499 (1960-06-01), Macy
patent: 3517574 (1970-06-01), Glatfelter
patent: 3741322 (1973-06-01), Wolters

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