| 摘要 |
<p>PURPOSE:To aim at the miniaturization of a hose reel by making the delivery and winding quantities of a hydraulic hose smaller than that of a telescopic motion stroke in a telescopic boom. CONSTITUTION:In this mobile crane, a rear end of a second boom 6 housed in a first boom 2 constituting a telescopic boom B is constituted so as to be projected to the rear from a rear end of the first boom 2, and a hose guide means 14 is installed in the rear end of the first boom 2 so as to be situated at the more lower side than the rear end of the second boom 6 when the telescopic boom B is most contracted. In addition, a flexible hydraulic hose 9 delivered from a hose reel 12 set up on a swivel base frame is bypassed to the hose guide means 14 from the underside and than it is connected to an expansion cylinder 11 installed in the telescopic boom B, whereby the delivery and winding quantities of the hydraulic hose 9 can be made smaller than that of a telescopic motion stroke, so that miniaturization for the hose reel is well promoted.</p> |
