| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lifting gate and a manufacturing method of a bag body of the lifting gate to be advantageous in terms of costs as well by achieving merits of multiple bags by a single bag. <P>SOLUTION: The lifting gate includes a door body 5 supported at a bottom part 2a of a water channel 2 and turnable between an erected position U on the upstream side and a brought-down position D on the downstream side, and a bag body 12 installed on the downstream side of the door body 5. By the expansion of the bag body 12 by the supply of fluid, the door body 5 is turned to the erected position U. For the bag body 12, a recessed part 12b recessed inwards is formed over the width direction at an outer end face part at a position for roughly equally dividing the inside in the vertical direction, an air permeable ventilation sheet 26 whose one end 26a is fixed to the bottom part of the recessed part 12b and other end 26b is held between the distal ends 12c of the bag body 12 is provided inside the bag body 12, and thus multiple bags 12 (A, B) whose inside is divided into multiple pieces in the vertical direction are attained. <P>COPYRIGHT: (C)2012,JPO&INPIT |
