Design and experiment of a planting mechanism of high-density transplanters for brassica chinensis
At present,there is no mature seedling transplanting mechanism suitable for transplanting multiple rows of closely planted vegetables such as brassica chinensis in China;according to the requirements of close planting and transplanting with small plant spacing,small row spacing and high efficiency,an eight-row synchronous seedling planting mechanism with non-circular gear planetary gear train was designed,and the kinematics simulation and field transplanting experiment were carried out.The kinematics modeling and analysis of non-circular gear planetary gear train were carried out,and the auxiliary analysis and optimization design software of the seedling planting mechanism was developed;the effects of different mechanism parameters on the trajectory of seedlings were analyzed,and a set of mechanism parameters meeting the requirements of small plant spacing transplanting of brassica chinensis were obtained through human-computer interaction;the three-dimensional model of the eight-row synchronous seedling planting mechanism was established,the simulation trajectory was drawn by virtual prototype simulation technology,and the correctness of the three-dimensional design of seedling planting mechanism was verified by comparing with the theoretical trajectory;field transplanting experiments were carried out to verify the feasibility and practicability of the mechanism.The results showed that when the operating speed was 15 r/min and the forward speed was 55 mm/s,the operating plant spacing and row spacing of the eight-row seedling planting mechanism were both 110 mm,the average success rate of seedling planting was 93.9％,the transplanting density was more than 70 plants/m2,and the experimental transplanting efficiency was 240 plants/min,indicating the mechanism's high application value in mechanized close planting and transplanting operation.This study provides a theoretical and experimental basis for the research and development of high-density transplanter seedling planting mechanisms,promotes the mechanized transplanting process of closed planted vegetable pot seedlings,and provides technical support and reference for the further research of dense transplanters.
close plantingseedling planting mechanismplanetary gear trainkinematic analysistransplanting experiment
NETL
NSTL
万方数据
维普
