| 摘要 |
PROBLEM TO BE SOLVED: To provide an unloading device for a tank lorry capable of preventing contamination in a liquid storage tank in a delivery destination, and unloading cargo liquid of the ordered liquid kind as much as the order quantity accurately without excess and shortage.SOLUTION: Concerning a designated unloading hatch 52-m and each of other undesignated unloading hatches 52-m using jointly an unloading port 58-q, during unloading from the unloading hatch 52-m, the liquid level change of each of the other undesignated hatches 52-m is monitored, and when the liquid level of any of the other undesignated hatches 52-m is changed, an abnormality detection signal is outputted, to thereby prevent contamination in an oil storage tank 20-n in a delivery destination. |
