| 机械气力组合式玉米精密排种器 |
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| 引用本文： | 刘佳,崔涛,张东兴,杨丽,史嵩.机械气力组合式玉米精密排种器[J].农业机械学报,2012,43(2):43-47. |
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| 作者姓名： | 刘佳 崔涛 张东兴 杨丽 史嵩 |
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| 作者单位： | 中国农业大学工学院,北京,100083 |
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| 基金项目： | 国家公益性行业(农业)科研专项经费资助项目(200903059);国家现代玉米产业技术体系建设项目(nycytx-02);农业部土壤-机器-植物系统技术重点实验室资助项目 |
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| 摘 要： | 结合机械内充种式排种器的结构特点和气吹式排种器的单粒留种原理,设计了一种机械气力组合式玉米精密排种器。阐述了其基本结构和工作原理,对关键部件进行了设计计算,并对工作压力、重播指数、漏播指数、粒距合格率等性能指标进行了台架试验。试验结果表明,该排种器工作气压低、粒距合格率高,能够适应高速作业需求。
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| 关 键 词： | 玉米 精密排种器 机械气力组合式 设计 试验 |
Mechanical-pneumatic Combined Corn Precision Seed-metering Device |
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| Liu Ji,Cui Tao,Zhang Dongxing,Yang Li and Shi Song.Mechanical-pneumatic Combined Corn Precision Seed-metering Device[J].Transactions of the Chinese Society of Agricultural Machinery,2012,43(2):43-47. |
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| Authors: | Liu Ji Cui Tao Zhang Dongxing Yang Li and Shi Song |
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| Institution: | Liu Jia Cui Tao Zhang Dongxing Yang Li Shi Song(College of Engineering,China Agricultural University,Beijing 100083,China) |
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| Abstract: | A mechanical-pneumatic combined corn precision seed-metering device was designed based on the structure of mechanical inside-filling seed-metering device and the single-seed reserving principle of the pneumatic seed-metering device.The basic structure and the working principle were expounded here.The critical components were designed based on the calculation.It’s performance such as working air pressure,seed overlap index,missing index and seed allocation eligible rates was investigated under laboratory.Experiment results indicated that this device had superior eligible rates of the seed individual spacing,low working air pressure and high speed adoptability. |
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| Keywords: | Corn Precision seed-metering device Mechanical-pneumatic combination Design Experiment |
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