中文摘要：

为解决共轭凸轮推秧装置结构尺寸过大的问题,提出了等径凸轮推秧装置。该推秧装置由等径凸轮控制推秧杆运动。根据推秧杆农艺要求及椭圆齿轮行星系驱动机构构造了推秧杆的理想运动学曲线,建立了该推秧装置的反求模型。基于VB 6.0编写了其反求设计及仿真软件,得到一组满足农艺要求的参数,包括机构参数和等径凸轮廓线。根据这组参数研制了该推秧装置并进行高速录像试验。理论分析及试验结果表明,该推秧装置能够满足推秧杆的农艺要求,且具有比共轭凸轮推秧装置更小巧的结构尺寸。

英文摘要：

The equal-diameter cam seedling-pushing mechanism was proposed in order to solve the problem that the structure size of conjugate cam seedling-pushing mechanism was too big.In the proposed seedling-pushing mechanism,equal-diameter cam was used to control the motion of seedling-pushing rod.Ideal kinematic curves of seedling-pushing rod were constructed and reverse model of the proposed seedling-pushing mechanism was established according to requirements of planting agriculture as well as driving mechanism with planetary elliptic-gear trains.Then a reverse design and simulation software was compiled based on VB 6.0.A set of optimum parameters including structural parameters as well as pitch curve of equal-diameter cam were obtained through the software,which could meet the requirements of planting agriculture.The seedling-pushing mechanism was developed based on these parameters and testified by high-speed video.Analysis and results of the experiments showed that the proposed seedlingpushing mechanism could meet the requirements of planting agriculture and had a smaller outer dimension compared to conjugate cam seedling-pushing mechanism.