| 摘要 |
PURPOSE:To set the location of floors or the scope of the audience seats freely by carrying out the drawing-out of the movable floors, the conversion of stroke, or the movement of the whole body, so as to set the desired floors or the approaching rate of the floors to the event opening area, the disposition of the height, and the scope of field of vision, suitable to an optimum visivility condition. CONSTITUTION:A pair of the left side and the right side base boards 1 furnishing rollers 2 at the bottom and standing struts 3 at the upper side are assembled with beams of a lateral rack form. Plural movable floors 5 are combined to be housed in nest forms in order while the interval of the base boards 1 and the heights of the struts 3 in every movable floor 5 are made different. When the movable floors 5 in each step are made in a plain surface 5a at the former half with the movable floors of one step and two line, and in a high floor surface 5b at the latter half, or when the latter half is made in the plain surface 5c of a housing tank, the plain floor surface 5 of the desired step is disposed by superposing on the higher floor surface of the front side and the rear side, or on the housing tank floor surface, by a half stroke operation. Moreover, a stack loading device E and the stopper device are provided on the base board 1 to set a desired drawing-out stroke respectively.
|
