检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]甘肃农业大学机电工程系
出 处:《农业机械学报》2001年第6期34-37,共4页Transactions of the Chinese Society for Agricultural Machinery
摘 要:针对滚轮式小麦覆膜穴播机存在的问题 ,设计了垂直插入式小麦覆膜穴播机。运用平行四杆机构原理 ,实现了成穴器——鸭嘴的直立接种、垂直入土和出土 ;采用地轮传动实现了鸭嘴插入土壤后的接近水平零位移运动 ;鸭嘴采用了定点强制开启投种。理论分析和试验表明 ,该机成穴播种机构设计合理 ,穴粒数合格率较高 ,无空穴 ,成穴器不堵土 ,不挑膜 ,穴孔合理 。A wheat hill drop planter used for perpendicularly inserting film mulching field was developed and its major shortcomings existed in the roller type planter were overcome. By applying parallelogram linkage principle, we developed a new planter that accepted seeds erectly, inserted and pulled out of soil vertically. It also realized near zero horizontal shift of duckbills while it inserted into soil by use of ground wheels and the duckbills were forced opening to seed in the fixed point. The theoretical analysis and experiments show that the planter has advantages in terms of the design; the distance between the hill drop drills is regular; seeding is reliable; the film will not be damaged during seeding; and the seeds can be easily covered with soil.
分 类 号:S223.23[农业科学—农业机械化工程] S512.104.2[农业科学—农业工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.30