Tunnel driving machine slope correcting support system - has drill head with extensible radial protrusions as front support on carrier unit

摘要

The machine (1) for driving a tunnel forward has front and rear bracing, and fron and rear support on its carrier unit, which is connected to the support device so as to swivel about its longitudinal axis. Use is made of the drill head (3) as a front support device, pref. with a series of extensible and retractable or swivelling, support elements (13) mounted on its periphery. These can be in the form of evenly distributed piston-and-cylinder units (14). The rear support is pref. mounted to swivel on the carrier unit (4) about the longitudinal axis of the machine. for correcting slope, this is reliable and compact, even on very large machines.