| 摘要 |
PROBLEM TO BE SOLVED: To provide an outrigger device capable of extending and contracting a plurality of stages of outrigger beams while suppressing an increase in the number of parts. SOLUTION: This outrigger device 1 comprises a single expansion cylinder 5 provided along a tip side beam 4 and a body side beam 3 to extend and contract the tip side beam 4 and body side beam 3. One end side of a cylinder body 5a of the expansion cylinder 5 is fixed to an outrigger box 2, and the other end side of an expansion rod 5b is fixed to the tip side beam 4 located at the foremost part when extended. COPYRIGHT: (C)2008,JPO&INPIT
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