| 摘要 |
PROBLEM TO BE SOLVED: To provide the rotary type planting device of a rice transplanter, which simplifies a backlash-removing mechanism and simultaneously levels the rotation resistance of the rotary case to smoothen high speed planting, in the rotary type planting device to whose rotary case two planting members are attached.SOLUTION: A sun gear, intermediate gears, and planetary gears are arranged in the rotary case. A circumferential cam 28 for removing backlash is disposed on the planetary gear. The circumferential cam 28 for removing the backlash is contacted with a lever 29 and energized with a spring 30. The circumferential cam 28 for removing the backlash has a profile in which the most strong resistance portion 64 and the most weak resistance portion 69 are approximately symmetrically placed. Therefore, the resultant force of the rotation resistances of the two planetary gears corresponding to a pair of planting members is largely not changed. The rotation resistance of the rotary case is thereby leveled to smoothen high speed planting. |
