| 摘要 |
PURPOSE: An overhead crane is provided to prevent safety accidents because a girder stopper is manipulated on the ground and to increase income of fishermen by preventing frequent malfunction in advance. CONSTITUTION: An overhead crane comprises a driving rail, a hoist, a girder driving preventing stopper(9), a supporting rod, and a shaft for fixing a girder driving preventing stopper(10). A girder having the hoist is moved on the driving rail. The hoist is horizontally moved inside the girder with I-beam and winds up a chain to lift aquatic products. The supporting rod allows the girder driving preventing stopper to rotate on the ground. |
