Apparatus for reaming a tunnel profile, in particular of traffic tunnels

摘要

To ream a tunnel profile or to widen tunnels, a machine is proposed according to the invention which carries on an undercarriage (7) a cutting device (10) which is provided with a vertically pivotable cutting arm (16). The cutting arm (16) is mounted in the cutting-arm bearing (17) on a cutting-arm carrier (18) which is mounted in turn in a step bearing (19) on a lifting member (20) which is preferably likewise pivotable about a pivot axis parallel to the tunnel axis. The entire cutting device (10) is mounted on a slide arrangement (9) which preferably consists of a longitudinal slide and a cross slide.