Apparatus for forming long and short holes and setting rock bolt

Details Apparatus for forming long and short holes and setting rock bolt Apparatus for forming long and short holes and setting rock bolt

1991-06-28

1993-09-21

Phan, Hien H.

Hydraulic and earth engineering

Miscellaneous

4052591, 173192, 173 36, 173 52, E21D 2000

Patent

active

052463133

ABSTRACT:
An apparatus for drilling short and long holes and for fitting bolts to the short holes has a generally stationary support positioned adjacent the face and a turret angularly displaceable on the support between two end positions about a longitudinal turret axis. A drill slide longitudinally displaceable on the turret carries a drill having a rotatable stem centered on a drill axis parallel to the turret axis. A drill bit can be fitted to the stem. A bolt slide longitudinally displaceable on the turret adjacent the drill slide carries a bolting unit having a ram centered on a bolt axis. A magazine mounted on the support adjacent the turret has a plurality of seats adapted to hold the bolts and extension rods fittable between the bit and the drill stem, depending on whether the device is to be used for short-hold drilling and bolting or for long-hole drilling. A device on the support can transfer bolts from the magazine to the bolting unit when the turret is in the other end position for short-hole drilling and bolting and can transfer extension rods from the magazine to the drill in the one end position of the turret when the apparatus is used for long-hole drilling. A stinger on the turret is aligned on the drill axis with the drill stem and engageable with the drill bit and with a one of the extension rods engaged between the stem and the bit.

REFERENCES:
patent: 3246705 (1966-04-01), Chappuis
patent: 3965997 (1976-06-01), Hilding et al.
patent: 4158520 (1979-06-01), Prebensen
patent: 4497378 (1985-02-01), Beney et al.

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