| 摘要 |
PROBLEM TO BE SOLVED: To improve maintenance of a shutter part for adjusting the amount of a fertilizer dropped in a fertilizer distributor with which the fertilizer is dropped from the bottom of a hopper to an application system below the hopper and sprayed. SOLUTION: The shutter part is composed of a stationary plate at the bottom of the hopper, a shutter plate that rotates approximately around the central part of the stationary plate as the rotational center and a bush that stick them fast and is also the central member of the rotation of the shutter plate. When the shutter plate is rotated beyond the ordinary range of the rotation of spray operation, a connection part between the shutter plate and the bush at the central part of the rotation is separated and a fixed space is secured between the stationary plate and the shutter plate and the fertilizer entered into the sliding part of the shutter is readily removed. COPYRIGHT: (C)2006,JPO&NCIPI
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