| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a telescopic boom type working machine for dispensing with increased height of a roller support member for supporting a guide roller provided on the backside of a telescopic boom, preventing ropes from interfering with each other, and allowing concrete placing work to be rapidly performed without using a large extensible cylinder. <P>SOLUTION: This telescopic boom type working machine 1 is structured so that a main hoisting rope 12, wound and rewound by a main hoisting winch 11 disposed on the backside of the rotation center of an upper rotary body 4, and an auxiliary hoisting rope 14, wound and rewound by an auxiliary hoisting winch 13, are led to the boom head 7b side on the backside of the telescopic boom 7, and a third rope 19, wound and rewound by a third winch 18 disposed ahead of the rotation center of the rotary body 4, is led to the boom head 7b side on the front side of the telescopic boom 7. <P>COPYRIGHT: (C)2004,JPO</p> |
