| 摘要 |
PURPOSE:To carry out excellent rolling control even at high-speed traveling, by setting sensor floats for controlling rolling at both left and right side parts vertically shakably around rear supports positioned at the same horizontal shaft center and arranging the rear support in the vicinity of a seedling planting part. CONSTITUTION:The lateral width and the length of sensor floats 9A and 9B and auxiliary floats 10A and 10B are lessened as much as possible to reduce resistance of muddy water and a rice transplanter is constituted not to produce muddy push even at high-speed traveling. A sensor float 11 is set between the auxiliary floats 10A and 10B vertically shakably around rear supports X. All the rear supports X are positioned near the rear end and arranged in a horizontal line on the same horizontal shaft center P2. Shallow dent parts 12 are formed at the rear ends of the floats 9A, 9B, 10A and 10B and planting positions are set in the dent parts 12. Consequently, application of resistance to soil contact parts backward from the rear supports is reduced.
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