Apparatus for feeding a drilling machine in extension rod...

Details Apparatus for feeding a drilling machine in extension rod... Apparatus for feeding a drilling machine in extension rod...

E - Fixed Constructions

21

B

E21B 19/20 (2006.01) E21B 19/086 (2006.01) E21C 11/00 (1990.01)

Patent

CA 2085473

A feeding apparatus for a rock drilling machine (8). The feed- ing apparatus comprises a feeding cylinder (5) movable with respect to the feeding apparatus and a connecting cylinder (6) arranged around the feeding cylinder (5) movably in its longitudinal direction. To add a new drill pipe to a drill string, the drilling machine (8) is displaced by means of the connecting cylinder (6) and during the drilling movement by means of the feeding cylinder (5).

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