Spreader positioning arrangement for container crane, having horizontal positioning element to compensate for rope differences due to movement of vertical positioning element

摘要

The arrangement includes fixed redirection reels (15a-15d) between a first, vertical positioning element (11a-11d), and second redirection reels (16a-16d) movable through a second, horizontal positioning element (17a-17d) arranged respectively at the four ropes (4a-4d) at a crane part (1). The adjustment of the second, horizontal positioning element results in dependence on the first, vertical positioning element in such way, that a vertical parallel arrangement of the ropes is maintained in each situation.