| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mobile crane capable of effectively preventing the horizontal deflection of a boom and performing a higher lifting capacity. <P>SOLUTION: The mobile crane has a telescopic boom 5 that is retractably mounted on a travelling vehicle body 1 and the boom 5 is composed of a main boom 5A on the base end side and a sub-boom extensible from the main boom 5A, wherein a tension rope 20 tensed between a base end and a tip of the telescopic boom 5 is provided through a tension mast 10 composed of a left mast 10L whose base end is supported and a right mast 10R to the main boom 5A and the tension mast 10, the left mast 10L is a member that extends diagonally left, the right mast 10R is a member that extends diagonally right, the tension rope 20 is composed of the left rope 20L tensed through the left mast 10L and the right rope 20R tensed through the right mast 10R, and a distance keeping stay 41 that mutually keeps a distance between the left mast 10L and right mast 10R is disposed. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
