| 摘要 |
PROBLEM TO BE SOLVED: To improve water supply workability to a chemical liquid tank, in a work vehicle which supplies a chemical liquid to a spray nozzle of a chemical liquid spraying portion from the chemical liquid tank mounted on a traveling machine body through a power spray pump, and sprays that.SOLUTION: A work vehicle is mounted with an engine, a chemical liquid tank collecting a chemical liquid, and a supply pump for supplying water to the chemical liquid tank on a traveling machine body. A throttle lever is provided, which sets and holds engine rotation speed. The supply pump is driven by the power of the engine, and the engine rotation speed is changed by the operation of the throttle lever. The work vehicle is equipped with a supply pump switch which turns on/off the supply pump, and a control device which executes rotation speed limiting control limiting an engine rotation speed Nmax to a pump rated speed N2 lower than the maximum rotation speed N1, while the supply pump switch is turned on.SELECTED DRAWING: Figure 16 |
