振动式排种器上稻种有序排列运动分析  

Movement analysis of rice seed embryo ordering in vibration seed-metering device

作　　者：俞亚新[1,2] 张斌[1] 赵匀[1,2] 李建平[1] 

机构地区：[1]浙江大学生物系统工程与食品科学学院,浙江杭州310029 [2]浙江理工大学机械与自动控制学院,浙江杭州310018

出　　处：《浙江大学学报（工学版）》2009年第5期902-906,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(50805134,50575199);国家“十一五”科技支撑计划资助项目(2006BAD28B01);浙江省教育厅基金资助项目(20050781)

摘　　要：针对超级稻机械化育秧时每取秧面积上播1、2颗稻种的要求,研制了振动式稻种胚胎有序排列排种器.分析了稻种在振动板上的运动过程,在导向板段稻种进行有序排列,再在V型槽中形成均匀的种子流.根据稻种表面定向生长茸毛的特性,从理论上分析了稻种在运动过程中胚胎方向沿导向板转向一致的机理,并且经过高速录像验证.对稻种在振动板导向板段、V型槽中的运动进行动力学分析,分别建立了稻种在这两个阶段的运动特征值和运动速度的计算模型.试验结果表明,所设计的排种器能够使85%以上的稻种胚胎方向转向一致,播种速度能够与播种流水线的速度匹配.A vibration seed-metering device for rice seed embryo ordering was developed, which can meet the plant requirement of super-rice （1-2 seedlings per hill）. The guided plate makes the rice seed embryo array during the seeding and the V-shaped groove makes the rice seed slide at the same speed as the seeding tray. According to the property of the seed awn directional growth, the principle of the rice seed rotating to the same direction during moving along the guided plate was analyzed, which were verified by a highspeed video tape recorder. Dynamic characteristics of the rice seed in the guide plate and V-shaped groove on the vibration plate were analyzed, and the movement characteristic value model and the velocity model were established separately. Experimental results showed that above 85% rice seed embryos were ordered, so the seed-metering device can be used as an in-suit pipelining seeder.

关 键 词：稻种 动力学分析 排种器 

分 类 号：S223.2[农业科学—农业机械化工程]