| 摘要 |
PROBLEM TO BE SOLVED: To stabilize seedling picking operation and planting operation by a non-constant velocity transmission mechanism disposed in a planting transmission path, and meanwhile to effectively prevent or reduce a torque fluctuation caused by the non-constant velocity transmission mechanism.SOLUTION: A rice transplanter comprises a torque leveling mechanism including: a torque action shaft operably connected to a rotary shaft forming a planting transmission path in which a non-constant velocity transmission mechanism is interposed; and an elastic member operationally engaged with the torque action shaft. The torque action shaft has a shaft body operably connected to the rotary shaft and a crank part eccentrically deviated from the shaft body. The elastic member extends or contracts according to movement in which the crank part eccentrically rotates around the axis of the shaft body in accordance with the rotation of the shaft body around the axis, and thus, torque for leveling a torque fluctuation caused by the non-constant velocity transmission mechanism is applied to the torque action shaft.SELECTED DRAWING: Figure 3 |
