| 摘要 |
<p>PURPOSE:To obtain a device for holding a line member of a telescopic boom, of which length at the time of shrinkage is shorter than the telescopic motion stroke of the telescopic boom and which can obtain the stroke as same as the telescopic motion stroke of the boom. CONSTITUTION:An oil feeding hose 29 is held by each boom member of a line member holding device 29 formed of a first line member holding means 21, which is extended for fixation in the fore and aft direction of a base end boom member 15a, a second line member holding means 25, which is extended for fixation in the fore and aft direction of a tip boom member 15c, and intermediate line member holding means 22, 23, 24, which are positioned between the first line member holding means 21 and the second line member holding means 25 freely to be slid in the fore and aft direction in relation to both the first and second holding means. Full length of the line member holding device 20 at the time of shrinkage can be thereby set at 1/2+alpha, which is shorter than the telescopic motion stroke S.</p> |
