Vibration Analysis of Rotary Type Rice Transplanter (Part 2) : Experimental Analysis on Vibration of Planting Mechanism

Experimental analysis was conducted to understand the fundamental vibration of planting parts. The speed of driving shaft was changed, and the characteristics of variation were investigated with respect to the acceleration, the torque of driving shaft and the supporting load of planting parts. The maximum amplitude of acceleration were-40 to 34 [m/s2] in both vertical and horizontal directions, which appeared when the planting fingers acted. The torque of drive shaft, which had no connection with the speed of revolution, were in the range of 6.0 to 7.7 [N• m]. The change of supporting loads showed a similar tendency with that of acceleration. Composing the load in both directions, it was found that large forces acted at the operating time of planting fingers nearly in the vertical direction. •k Keywords•l rotary type rice transplanter, vibration, elliptic planetary gears, planting mechanism, diving torque, supporting load of body