| 摘要 |
PURPOSE: A multistage opening and closing type movable weir is provided to prevent the opening caused by malfunction and to minimize maintenance by being fixed spontaneously in case of closure. CONSTITUTION: In a multistage opening and closing type movable weir, a fixing rack(200) and a rack guide(210) are installed to the outside of a rail(13), and a link cam(100) inserted to two sides of a roller is installed to make contact with the fixing rack and the rack guide and fitted to a coupling pin(12), and the link cam is coupled to a fixing groove, which is formed in a rod(11) of a hydraulic cylinder, by a hinge pin(101), and the coupling pin is fitted to a long groove formed in the rod. |
