Head block and container crane comprising such head block

Details Head block and container crane comprising such head block Head block and container crane comprising such head block

B - Operations, Transporting

66

C

B66C 11/16 (2006.01)

Patent

CA 2635527

A hoisting frame or head block (1) for a container crane (17), comprises a frame structure (8) provided with two pairs of cable sheaves (5) which pairs are at a distance from each other in the longitudinal direction of the frame structure (8), connecting means (9) for connecting a secondary hoisting frame or spreader (2, 3) to the frame structure (8), a drive mechanism (12) for displacing the cable sheaves (5) of each pair with respect to each other in the transverse direction of the frame structure (8) between a small mutual rest position distance respectively a large mutual rest position distance, as well as rest position stabilisation means for stabilising the rest positions of the sheaves of each pair. The drive mechanism (12) is carried out for bringing the cable sheaves (5) of each pair at at least a minimal or at least a maximal mutual distance which is smaller respectively larger than the small respectively large mutual rest positions distances, and in that the rest position stabilisation means are activated upon displacing the cable sheaves (5) of each pair between said minimal respectively maximal mutual distances and said small respectively large mutual rest position distances.

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