| 摘要 |
PROBLEM TO BE SOLVED: To facilitate installation and improve work efficiency by providing a cylinder forming means for engaging an engagement means and transforming a plateshaped belt into the bottomed cylinder shape, and a cylinder releasing means for releasing the engagement means and transforming the bottomed cylinder shaped belt into the plate shape. SOLUTION: An engagement means 8 is closed at its lower part by a cylinder forming means 10 such as a fastener hanging or a hook hanging, and a plurality of projections are piled to form a bottom or a ball itself becomes the bottom. Thus, because the belt 4 is of a bottomed cylinder shape, even when conveyed material such as sediment is transported to a vertical portion 2, the material can be transported upward preventing the falling. The upper portion 2b of the vertical portion is provided with a cylinder releasing means 11 for returning the cylindrical belt 4 to the plate-shaped belt 4, such as a fastener releasing means or a hook releasing means for releasing the engagement means 8 such as a fastener and a hook. Thus, since the cylindrical belt 4 is returned to the plate-shaped belt 4, conveyed material 6 such as sediment can be dropped to a general used belt conveyer 15 at the lower part.
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