中文摘要：

针对步行式插秧机上传统推秧装置存在的推秧结束时间提前或滞后问题,提出了基于共轭凸轮的推秧装置。根据步行式插秧机椭圆齿轮行星系驱动机构及插秧农艺要求构造了推秧杆的运动学曲线,建立了该推秧装置反求模型,并基于Visual Basic 6.0编写了其反求设计及仿真软件,反求得到一组满足农艺要求的较优参数。根据这组参数对该推秧装置进行结构设计,建立了三维模型并进行虚拟样机仿真,结果表明该装置能很好地满足步行式插秧机的作业要求,而且推秧结束时间准确。

英文摘要：

The seedling-pushing device based on the conjugate cam was proposed aiming at the problems,that ending time of seedling-pushing was advanced or delayed,of the traditional walking-type rice transplanter＇s seedling-pushing device.According to kinematics curves of the seedling-pushing rod which were got from the walking-type rice transplanter＇s driving mechanism with planetary elliptic-gear trains and requirements of planting agriculture,the reverse model of the seedling-pushing device was established.A reverse design and simulation software of this seedling-pushing device was compiled based on Visual Basic 6.0.A set of optimum parameters which met the requirements of planting agriculture were received by the software.The structural design was carried on by using these parameters.Virtual prototype test was performed after finishing the 3-D design of the transplanting mechanism,whose results showed that the seedling-pushing device could meet the working requirements of walking-type rice transplanter and the ending time of seedling-pushing was accurate.