A device for changing the dynamic stiffness of a gantry or overhanging structure

摘要

Apparatus for changing the dynamic stiffness and / or damping of a gantry or overhanging structure with a gantry (1) or stand (5) sliding on the frame (8), the gantry (1) or stand (5) is flexibly connected to at least one other movable element. Between the frame (8) and the portal (1) or stand (5) or between two movable parts of the structure are ropes (10) connected by at least one end firmly to the first part and at least one second end to the second part of the portal or overhanging construction. The ropes (10) form at least one pair, one rope (10) guided in the opposite direction to the other rope (10).