| 摘要 |
PROBLEM TO BE SOLVED: To provide an outrigger opening/closing device to be used for a high lift work device.SOLUTION: An opening/closing mechanism has one or more arms 8a, 8b pivotally connected to a column side member 4P with first pivotal shafts 22a, 22b and pivotally connected to an auxiliary leg 10 with second pivotal shafts 23a, 23b, respectively. The arms 8a, 8b have arm extension parts 24 pivotally supporting the second pivotal shafts, where pivotal shaft moving means 27 are formed extending in the longitudinal direction to pivotally support the second pivotal shafts 23a, 23b to be movable between lock positions and unlock positions, respectively. Engaging parts of the arm extension parts 24 and engaged parts of the auxiliary leg 10 construct lock means 25. The second pivotal shafts 23a, 23b, when moved to the lock positions, are non-rotatable, and the second pivotal shafts 23a, 23b, when moved to the unlock positions, are rotatable. |
