| 摘要 |
PROBLEM TO BE SOLVED: To discharge a water/foam mixed solution quickly after the arrival at fire sites by eliminating outrigger extending, jack landing and tower/ladder erecting processes. SOLUTION: In the water cannon car for high lift work which completes preparations for discharge via a foam mixed solution adjusting process S1, the outrigger extending process S3, the jack landing process S4, the tower/ladder erecting process S5 and a nozzle extending process S6 with the start of the discharge and discharges the solution, a changeover switch operation process S2 is provided between the foam mixed solution adjusting process and the outrigger extending process while a short circuit 10 is so arranged as to directly reach the nozzle extending process S6 from the changeover switch operation process S2 in parallel with the outrigger extending process, the jack landing process and the tower/ladder erecting process when a changeover switch of the changeover switch operation process is turned ON.
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