| 摘要 |
<p>PROBLEM TO BE SOLVED: To cover a load-carrying platform or the like over a long period by certainly preventing damage to a hood sheet.SOLUTION: A hood sheet opening/closing device 1 comprises: a pair of guide rails 2 laid with a setting interval right and left; a plurality of frames 3 hung across the right and left guide rails 2, and rotatably supporting rollers capable of rolling along the right and left guide rails in the lower end; a plurality of X-shaped link mechanisms 4 openably/closably connected to right and left sides of a pair of frames 3 adjacent to each other in the back-and-forth direction; a flexible hood sheet 5 stretched over the plurality of frames 3; and drive means 6 moving the frames 3 along the guide rails 2. Here, the link mechanism 4 is formed by supporting a pair of nearly Z-shaped cross bars 41 rotatably to each other in an intermediate part. When moving the frames 3 forward through the drive means 6 and folding the hood sheet 5 to open an upper part, an interval by an excursion x of the cross bar 41 is formed between the frames 3, 3.</p> |
