Ring drilling rig

Details Ring drilling rig Ring drilling rig

E - Fixed Constructions

21

B

255/35

E21B 19/081 (2006.01) E21B 7/02 (2006.01)

Patent

CA 1050527

ABSTRACT A ring drilling rig for rock drilling has a feed beam for a rock drill. The feed beam is mounted in a holder on the distal end of an arm that is mounted on a support. The support is tiltable about a transverse horizontal axis. The arm is swingable 360° about a longitudinal axis to which it is perpendicular. The feed beam and its holder are pivotable about an axis that is parallel with the axis about which the arm swings. The feed beam is axially displaceable in its holder.

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