| 摘要 |
PROBLEM TO BE SOLVED: To provide a detector for the row seedling width designed to accurately detect the width of each row seedling of a connected seedling group P even when corner parts of the connected seedling group P are greatly deficient. SOLUTION: The detector for the row seedling width is equipped with (i) a pair of length measuring arms 11 and 11' axially supporting base ends 11c and 11c' so as to freely rotate, (ii) springs 14 and 14' urging the length measuring arms 11 and 11' in the direction to close the arms, (iii) length measuring arm extending rods 18 and 18' having base ends located oppositely to the length measuring arms 11 and 11' and tips kept freely slidable in a state thereof directed to the side of a row seedling separating mechanism D and supported, (iv) potentiometers 17 and 17' detecting the rotation angle of the length measuring arms 11 and 11' and (v) an operation part detecting a signal from the potentiometers 17 and 17' and computing the width of each row seedling Pn sandwiched between the tips 11b and 11b' of the length measuring arms 11 and 11'. The pair of the length measuring arms 11 and 11' have the tips 11b and 11b' kept in a mutually opposite state and arranged left and right in the transporting direction of a transporting mechanism B for connected seedling group. The length measuring arm extending rods 18 and 18' are urged in the direction of the row seedling separating mechanism D with springs 19 and 19'. COPYRIGHT: (C)2004,JPO&NCIPI
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