| 摘要 |
PROBLEM TO BE SOLVED: To stably feed required electric power even when engine speed is reduced. SOLUTION: This crane device includes: an engine generator 1 having a main generator 12 driven by an engine to feed driving electric power 15 and an auxiliary generator 13 driven by the engine to feed auxiliary electric power 16; and a switching unit 5 changing over and feeding either one of the driving electric power 15 and the auxiliary electric power 16 to the auxiliary machine installation 6 of the crane device. A controller 7 controls the engine speed of the engine generator 1 and the switching unit 5 according to the operating condition of the crane device. COPYRIGHT: (C)2009,JPO&INPIT
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