| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile crane having a device for storing a ballast assemblable in an upper structure in a wherever possible miniaturized state. SOLUTION: This device for storing the ballast comprises at least three pull-up means vertically movable, connected to a pallet or a base plate supporting the ballast, pulling up the pallet or the base plate in the direction of the upper structure, connecting the pallet or the base plate to the upper structure, or disposed under the gravity of all ballasts to unload the pallet or the base plate from the upper structure. COPYRIGHT: (C)2007,JPO&INPIT
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