Quay crane and method of hanging the crane on the pier

摘要

PROBLEM TO BE SOLVED: To provide an unloader capable of lengthening the life of a rope by inhibiting a deterioration in the stretched rope, and a roping method for the unloader.SOLUTION: Ropes R1-R4 paid out from drums D1-D4 are looped along a peripheral surface from the downsides of sheaves S1-S4 installed at an end of a boom, stretched toward sheaves S11, S21, S31 and S41 arranged in a trolley 5 from the upsides of the sheaves S1-S4, looped along the peripheral surface from the upsides of sheaves S11, S21, S31 and S41, and stretched downward to be connected to a cargo handling tool 6.SELECTED DRAWING: Figure 2