Atlas Copco Craelius Ab

Gunnar Nord

Sverker Hartwig

Kaj Emanuelsson

Morgan Norling

Mats Kristerson

Carl-Gustav Martinsson

Federico Scolari

Jan Folke Wallenius

A method for driving tunnels, galleries, shafts or the like with a driving device (), including: that a cutting head () rotating around a general axis of rotation (R) and having cutting elements directed essentially radially outwardly is applied against a rock surface to be worked. The rock cutting elements (), are formed on cutting rolls () are brought to roll against the rock side during pressing against the rock and rotation of the cutting head (), and the rock cutting elements during rolling are brought to cut sidewardly arranged grooves in the rock surface at a distance from each other. The invention also concerns a rotatable cutting head and a device and a rig for driving tunnels, galleries, shafts or the like.

Method and device for working rock

A method and rig for driving tunnels, galleries, shafts or the like. The rig has a movable base unit that over a support unit supports a carrying unit which in turn carries a cutting head having outwardly directed cutting elements. The method includes rotating the cutting head around a general axis of rotation and applying the cutting head against a rock surface to be worked. The carrying unit is swung into a first chosen mutual position in respect of the support unit. The support unit is rotated into a second chosen mutual position with respect to the base unit around an axis that is essentially longitudinal with respect to the base unit. An angle of operation of the cutting head is controllable.

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Sollentuna, Sweden

Gunnar Nord