曲柄摇杆复合平行四边新型栽植机构的设计与试验

Optimum design and experiment of crank-rocker and parallelogram linkage mechanism of pot seedling transplanter

提出了一种新型栽植机构,建立了该机构栽植点的位移、速度、加速度方程。据此在Visual Basic 6.0平台上开发了该机构运动学分析程序,并分析该机构主要参数对其运动特性的影响,建立了轨迹平缓度和环扣尺寸与机构参数的关系,应用MATLAB和Pro/E对机构进行参数优化。与常用偏心轮栽植机构相比,文中设计的栽植机构轨迹路径更短,有利于提高效率。田间移栽试验结果表明,该机构在单行移栽作业中性能稳定,完全可以满足作业要求。

This paper proposes a new transplanting mechanism combined crank-rocker with parallelogram linkage and de- rived the expresssions of its displacement,velocity and acceleration. A kinematic analysis program were developed baser on Vi- sual Basic 6.0 Platform. It also described the equations of the track smoothness and becket sizes parameters. Optimization were conducted by MATLAB and Pro/E. Comparing with common used eccentric transplanting mechanism,the proposed mechanism had shorter trajectory length and higher efficiency. Transplanting experiments showed that this transplanting mechanism is able to fulfill practical operation requirements.