Low sluicegate by the waterproof piston and Bridge passing method of ship using the same

摘要

PURPOSE: A low sluice of the waterproof piston type and a bridge passing method of ship using the same are provided to pass a ship even though it is not an on/off type bridge by changing the water level according to the back and forth movement of a piston. CONSTITUTION: A low sluice comprises a lock chamber part(100), a connecting-rod(102), a piston head(103), and a pressure ring(105). The lock chamber part has the upper opened only. The lock chamber part forms a lock chamber(101). The lock chamber has a first and a second gate(110a,110b) at the both side. The connecting-rod is installed at the inside bottom of the lock chamber to move up and down. The piston head includes a compression ring groove(104). The compression ring groove is positioned and fixed on the top of the connecting-rod. The pressure ring is located at a compression ring groove of the piston head.