| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a boom telescopic device capable of driving both a cylinder pin and a boom pin by simple constitution. <P>SOLUTION: The boom telescopic device 1 includes the cylinder pin 103 slidingly movable along a direction orthogonal to a telescopic expansion direction of a telescopic cylinder 101 for expanding a boom 107, the boom pin 109 slidingly movable along the direction orthogonal to the telescopic expansion direction of the telescopic cylinder 101 for expanding the boom, and a cylinder 113 for driving the cylinder pin 103 and the boom pin 109, and the cylinder 113 is arranged to be moved telescopically along the direction orthogonal to the telescopic expansion direction of the telescopic cylinder 101. <P>COPYRIGHT: (C)2012,JPO&INPIT |
