CRANE IMPROVEMENTS

摘要

Aspects of the present invention relate to crane systems and/or hoists. One aspect includes in combination with a pair of runways (14A, 14B) in a crane system, a pair of hoist assemblies (3OA, 30B) moveable on the runways (14A, 14B), a pair of transfer rails (70) selectively disposable transversely to the runways (14A, 14B), the transfer rails (70) including racks for at least a portion of one or both of the hoist assemblies (3OA, 30B) to travel on, a spreader assembly (100) locatable between the hoist assemblies (30A, 30B) and engaging the runways (14A, 14B) and/or the hoist assemblies (30A, 30B) to push the runways (14A, 14B) or hoist assemblies (3OA, 30B) apart during insertion of the transfer rails (70) between the runways (14A, 14B).