Swing crane has swing frames with rollers on a carrier at the foundation column to give a positive cable feed and wide swing crane rotating tower rotations without cable contact

摘要

The swing crane has at least two swing frames (8) on a carrier in the foundation column (1), with cable rollers over each other for at least two cable strands to pass between them. The swing axes of the frames at the carrier are as close as possible to the rotary axis of the crane rotating tower (2), so that the cables are in alignment. In the start position, the frames are in a mirror image setting, symmetrical to the carrier.