Connection between the land and water side of a crane jib arm has facing concave and convex slide plate middle parts, with compensatng mass and sheet metal plate

摘要

The middle part of the slide plates (1,2) face each other with concave and convex surfaces. A compensating mass (5) and a sheet metal plate are positioned between at least one of the plates and a support (8,9). Between one of the side plates and the cast mass or the support is a container-crane for one of the slide plates and metal plate.(12)