Design of the up-film transplanter and kinematic analysis of its planting devices

This is to be applied into up-film transplanting of tobacco and cotton. In this article, the zero-velocity planting, motion simulation and trajectory of the transplanter designed were analyzed, which ensures it with low leakage rate of plantation, high-leveled upright degree and smaller damage of mulch-film. Parameters which influence trajectories and spacing were optimized. According to the kinematic analysis and relationship among parameters, the conclusion P_2max ≤ 246.09 mm was reached by changing the transmission ratio, when wheel diameter D₁ = 492 mm, swing diameter of dibble D₂ =470 mm and the number of dibble k=6. The ideal spacing P₂ =220 mm was finally achieved and the number of dibble should be decreased when the planting distance is over 246 mm.