基于ADAMS的玉米精密穴播器的设计与仿真研究

Design and simulation study on the corn precision dibbler based on the ADAMS

针对目前玉米穴播器存在空穴率较高,穴粒数均匀度差等问题,设计了玉米精密穴播器,确定了穴播器主要技术参数,采用精密排种器和鸭嘴强制开启机构,确保播种质量.在ADAMS/View环境下用相对轨迹曲线生成实体的方法,进行了鸭嘴强制开启机构的凸轮设计,进行了仿真研究,测试了鸭嘴的摆角、角速度、角加速度.结果表明:鸭嘴开始播种时快速开启,保持到出土后再逐渐关闭,满足穴播器设计要求.

A corn precision dibbler was designed aiming to solve the problems of high rate of empty seed and asymmetry of seeding,etc.The main technology parameters of dibbler were determined.The precision metering device and compulsive cam opening device were used to ensure the quality of seeding.The duck-beak compulsive opening device was simulated to measure the duck-beaks swing angle,angular velocity and angular acceleration,with the cam of duck-beak compulsive opening device designed based on the relative path curves in the ADAMS/view.The simulation results showed that the dibbler meets the requirement of design.