PURPOSE: A mobile deck supporting device is provided to reduce the time for loading and unloading a deck on a stopper of the supporting device by loading and unloading without controlling of the stopper rotation. CONSTITUTION: A mobile deck supporting device comprises a stopper(2), and a control unit. The stopper supports a deck by rotating around an axis of rotation(21). The control unit is operated along with the deck moving up and down with the stopper. The control unit controls the rotation of the stopper. One end part of a post(1) is mounted at the control unit with a hinge shaft(41). The other is mounted at a shaft(51) along with a link(4). The link rotates while contacting with the deck and is placed at an up and down moving path of the deck. The other part end contacts a holding roller(22) and the link and a hook(5) is operated together by connecting the hook and the link with a rod(6). The hook controls the rotation of the stopper.
