| 摘要 |
PROBLEM TO BE SOLVED: To prevent a platform from being erroneously operated in a horizontal open state when a lifting link mechanism is installed in a cabin, the lifting platform driven to be lifted and lowered by the lifting link mechanism is freely storable in a standing state and the platform can be horizontally opened.SOLUTION: A lifting device includes: a pair of stay arms 5 lifted and lowered by a parallel link; a support shaft 6 fixed to one of the stay arms; a support detachably provided in the other, a pivotal shaft for connecting the support shaft 6 and the support; a lifting platform 10 mounted in the pivotal shaft to be freely derricked; and stay arm lock mechanisms 20 for preventing lowering of the stay arms 5 in the standing state. In the standing state of the platform 10, a lock member 30 of the stay arm lock mechanism 20 is locked by a lock pin 40. |
