| 摘要 |
PROBLEM TO BE SOLVED: To provide a front visual confirmation device when a wheel crane runs having sufficient visibility while reducing cost using a convex mirror. SOLUTION: The convex mirror 12 is attached to an upper face position of a telescopic boom 5 confirmed visually from an eye point 7 of a driver's cab 4 in such a way that at least a part of its reflection face 12a is positioned on an outer side of a side face 5b on the opposite side to the driver's cab of the telescopic boom when viewed in a plane. When the wheel crane 1 runs, a front part of the wheel crane can be visually confirmed by indirect visibility through the convex mirror 12 from the eye point 7 of the driver's cab. COPYRIGHT: (C)2006,JPO&NCIPI
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