| 摘要 |
PROBLEM TO BE SOLVED: To provide a trolley crane easy to adjust with a simple structure. SOLUTION: Winding drums 1, 2, 3 are pivotally supported on different parts of the trolley underframe 33. Connectors 59, 60, 61 are mounted on a structure 34 having a hook 58. A hoisting rope 35 suspending form the winding drum 1 and a hoisting rope 37 suspending from the winding drum 2 are engaged with the connector 59. A hoisting rope 38 suspending from the winding drum 2 and a hoisting rope 40 suspending from the winding drum 3 are engaged with the connector 60. A hoisting rope 39 suspending from the winding drum 3 and a hoisting rope 36 suspending from the winding drum 1 are engaged with the connector 61. Intervals of the hoisting ropes 35, 37, hoisting ropes 38, 40, and hoisting ropes 36, 39 which are engaged with each of the connectors 59, 60, 61 become larger as closer to the trolley underframe 33. Thereby, tensile force acting on the hoisting ropes 35-40 suppresses a swing of the structure 34 back and forth and left and right . COPYRIGHT: (C)2004,JPO
|
