To provide an outrigger device capable of being housed and jutting out in a narrow space.
This outrigger device includes: a horizontal outrigger 10; a jack cylinder 20 capable of vertically moving a cylinder 21 relative to the horizontal outrigger 10; cylinder fixing means 31 and 32 for fixing the cylinder 21 in an upward moved state and a downward moved state; and a rod fixing means 33 for fixing a rod 22 in a state of positioning its tip in the middle between the horizontal outrigger 10 and the ground surface. Housing and jutting-out can be performed in the narrow space. Since the jutting-out and the housing of the outrigger device are performed by the expansion and contraction of the jack cylinder 20 and operation of the cylinder fixing means 31 and 32 and the rod fixing means 33, even when weight of the jack cylinder 20 is heavy, the work can be easily performed.
Hiroshi Nakai
Shin Yamauchi