tower cranes with the boom and the jib stay.

摘要

tower cranes with a boom (4) and the counterweight flotation jib stay (5), without any tool mountable and demountable and demontierter transport position on the road expansion, which is at the lower end of the tower (3), a drehlagerung (2). the boom (4) and (5) to jib stay horizontal axes traverse.in the anchorage (8, 8a) of the boom (4) and the jib stay (5) is a pulley (9) is used. in arbeitsstellung of the crane, the bottles (10, 11) of the flaschenzugs (9) directly connected. the pulley (9) on the end of an already existing continued seiltriebs actuated.