| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete pump truck, in which the safety in working is improved by a method wherein a sensor is provided so as not to develop damages or the like of a boom at a work under and overloaded state. SOLUTION: In a concrete pump truck for placing a concrete from a tip hose connected to a docking hose 21 provided at the tip of a bent boom, a load sensor 31 such as a load cell or the like for measuring a load applied during the pulling-round of the tip hose is provided in the neighborhood of the mouthpiece of the docking hose 21 of the concrete pump truck.
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