| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a door body raising/bringing-down operation device of a floating body type derricking gate, which is capable of forcibly raising/bringing down the door body of the floating body type derricking gate, securing a tension state at all times without loosening a wire rope attached to the door body during the automatic raising/bringing-down operation of the door body, and preventing hindrance in the operation of fully closing the gate. <P>SOLUTION: For a floating body type derricking gate facility for automatically raising/bringing down the door body 25 relative to the fluctuation of a river water level, in the door body raising/bringing-down operation device for forcibly raising the door body 25 and performing a gate closing operation by connecting a wire rope 22 to the distal end of the door body 25 and a winding/unwinding drum 5 and rotating the drum 5, the drive shaft 4 of the drum 5 and the input shaft of a power generator for rotating the drum 5 are connected so as to be connected/opened through a clutch, a spring type tension device for making torque act in a wire winding direction at all times is connected to the drive shaft 4 further, and also a centrifugal brake device for controlling a rotation speed in a wire unwinding direction is connected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
