| 摘要 |
PROBLEM TO BE SOLVED: To prevent a worker from feeling uneasy even when the worker extends an outrigger jack to stably support a traveling body while being on a work platform. SOLUTION: A jack operation control part 52 of a controller 50 operates the each outrigger jack 60 to extend in accordance with operation input when the extension operation input for the each outrigger jack 60 is performed by a first jack operating device 18, operates the each outrigger jack 60 to extend in accordance with the operation input when the extension operation input for the each outrigger jack 60 is performed by a second jack operating device 47, and stops extension operation of the each outrigger jack 60 when a ground contact condition of the each outrigger jack 60 is detected by a ground contact condition detector 67. COPYRIGHT: (C)2005,JPO&NCIPI
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