| 摘要 |
PURPOSE: An operation part moving system of a cyclic gantry crane moves swiftly a trolley and a crane, thereby improving the loading and unloading speed and efficiency of a container. CONSTITUTION: A moving system includes a pair of first and second steel wires(60), the trolley(50), the spreader(20), a hoist and an elevator(80). The first and second steel wires(60) are connected with a power source and then form a closed loop moving a gantry crane, are positioned at the lower portion of a hoist(40) and then rotate inside a boom(100). The trolley(50) includes a steel wire holder(52), an unlocker(56), and a wheel(59). The pairs of steel wire holders(52) are formed at the upper portion of the trolley(50) and holds the pair of first(60) or second steel wires(60). The unlocker(56) releases coupling between the steel wire(60) and the holder(52). The wheel(59) rolls on a moving track of the boom(100). The elevator(80) is positioned between the first steel wire(60) and the second steel wire.
|
