插秧机后插旋转式宽窄行分插机构设计与优化

Design and Optimization of Backward Rotary Transplanting Mechanism in Wide-Narrow Row Planting

摘要:

论述了两级交错轴斜齿行星轮系后插旋转式宽窄行分插机构的结构特点和工作原理，分析了两级交错轴斜齿行星轮系的角位移关系，对螺旋角的影响进行了分析，在空间坐标系中建立了分插机构的运动学模型，并得到了秧针尖点运动的位移方程。通过开发辅助分析与优化软件对影响参数进行了分析与优化，结合优化结果建立了分插机构虚拟样机模型，通过仿真及实体试验对理论分析进行了验证。结果表明：该分插机构能够应用在步行式插秧机上实现宽窄行插秧作业。

Abstract:

The working characteristics of walking type transplanting mechanism used in wide-narrow row planting was described. According to its characteristics, the planetary gear train with two levels of crisscross shaft was used in walking type transplanting mechanism and a transplanting mechanism used in walking type transplanter was proposed. The structure features and working principle of the wide-narrow row transplanting mechanism was analyzed. The angular displacement and the influence of the gear spiral angle. The kinematic model of the transplanting mechanism was built in the space coordinates system, and the displacement equation of the seedlings tip point was got. The parameters were analyzed and optimized by programming. The virtual model of the proposed transplanting mechanism was built with the optimization parameters. The theory model was verified by simulation and experiment. This transplanting mechanism could realize wide-narrow row rice. 