a shield blade for drilling underground works.

摘要

A shield blade for drilling underground works, which knives forward rests on a support frame and are guided therein in an interlocking manner and movably in the forward direction, having the guides of the supporting frame part profile which engages at least one longitudinal groove of the blades forward, characterized in that at least at the end turned to the front of the pit, the guides (4, 9) shaped and arranged on the support frame (1) is provided at least one projection cleaning (17) which fits into the longitudinal groove (8) and whose away from the groove bottom surface is configured as surface evacuation of dirt (23, 24) inclined relative to the longitudinal axis of the blades , and inclined relative to the bottom of the slot at a less than 90 ° angle.