| 摘要 |
PROBLEM TO BE SOLVED: To compactify the operation panel, improve the operability and inhibit wrong operation in the operation panel that is arranged to the roofed operator's cab for an agricultural tractor and controls the motions of the boom in the boom sprayer. SOLUTION: The operation panel 35 is equipped with the operation lever 40 that can be freely inclined toward the four directions and four switches 43, 44, 45, 46 are provided on the top face of the knob 42 of the operation lever 40. A variety of motions of the boom are allocated to individual inclination direction of the operation lever 40 and individual switches 43, 44, 45, 46, the operator allows the boom 20 to execute a desired motion by inclining the operation lever and by selecting and operating the prescribed switches. Thus, the operations for carrying out a variety of motions relating to the boom 20 are concentrated to one operation lever 40.
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