| 摘要 |
PROBLEM TO BE SOLVED: To provide a fertilizer distributor equipped with a shutter opening control device keeping a degree of shutter opening to be constant when a distribution operation is temporarily interrupted and restarted and independently carrying out the opening of the shutter by shutter opening switch with retaining the degree of shutter opening. SOLUTION: In the fertilizer distributor, a control box equipped with the shutter opening control device is installed nearby a driver and the degree of shutter opening is brought to be arbitrary set. The shutter opening operation is independently carried out without changing a set value of the degree of shutter opening when the distribution operation is interrupted and restarted after a while by installing the shutter opening switch which can independently control the shutter opening operation with keeping the set value of the degree of shutter opening. Therefore, the set amount of fertilizer is distributed and more accurate distribution is carried out without generating variation in amounts of distribution. COPYRIGHT: (C)2004,JPO
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