| 摘要 |
PROBLEM TO BE SOLVED: To correct a trouble of a shaft such as twist caused by functioning nonconstant speed conversion means in a rice transplanter having a rotary planting device.SOLUTION: A planting device 8 comprises a rotary case 36, and a pair of scraping units 37 attached thereto. The rotary case 36 includes a sun gear 92, intermediate gears 93, and planetary gears 94, and the sun gear 94 is fixed to a planting central shaft 91. Power is transmitted from a planting transmission shaft 87 to the planting central shaft 91 by third bevel gears 98 and 99. The third bevel gears 98 and 99 are defined as nonconstant speed conversion gears, so that acceleration is applied to the planting central shaft 91. |
