Design and experimental study of seed precise delivery mechanism for high-speed maize planter
Design and experimental study of seed precise delivery mechanism for high-speed maize planter
复制标题
高速玉米播种机种子精准输送机构设计与试验研究
DOI：
10.25165/j.ijabe.20181104.2802
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发表时间：
2018-07-01
影响因子：
2.4
通讯作者：
Wang, Mantao
中科院分区：
文献类型：
--
作者：
Liu, Quanwei;Cui, Tao;Wang, Mantao
为提高玉米播种机在高速前进时的种子间距均匀性，研发了一种由电动机驱动的种子精确输送机构，并在实验室进行了评估。该机构旨在将单粒种子从排种器输送到沟内。分析了种子从排种器的排种点到输送带的种子输送腔的运动，基于种子输送时间分析建立了种子精确输送机构中种子运动的数学模型。设计了一个机械样机并开发了相关控制系统。在传统的种管和新研发的种子精确输送机构之间进行了性能对比实验，测试结果表明，当播种机前进速度分别设定为10km/h、12km/h和14km/h时，种子精确输送机构的排种合格指数质量高于传统种管输送机构，且种子精确输送机构的变异系数低于传统种管输送机构。这表明与传统种管输送机构相比，种子精确输送机构显著提高了玉米播种机的种子间距均匀性。
Aiming at improving the seed spacing uniformity of maize planter at high forward speed, a seed precise delivery mechanism driven by electric motor has been developed and evaluated in laboratory. The mechanism was designed to deliver single seed from seed meter to furrow. Seed's movement from the seed release point in a seed meter to the seed delivery cavity in the belt was analyzed, the mathematical model of seed movement in the seed precise delivery mechanism was established based on seed delivery time analysis. A mechanical prototype was designed and associated control system was developed. The performance contrast experiment was conducted between a traditional seed tube and newly developed seed precise delivery mechanism, and test results indicated that the qualities of feed index of the seed precise delivery mechanism were higher than those of the traditional seed tube delivery mechanism, and the coefficients of variation of the seed precise delivery mechanism were lower than those of the traditional seed tube delivery mechanism when the forward speed of planter was set at 10 km/h, 12 km/h and 14 km/h, respectively. It indicated the seed precise delivery mechanism significantly improved seed spacing uniformity of maize planter compared with the traditional seed tube delivery mechanism.