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当前位置: 首页 > 文章 > 指夹式精量玉米排种器改进设计与试验 农业机械学报 2015,46 (9) 68-76
Position: Home > Articles > Improved Design and Experiment on Pickup Finger Precision Seed Metering Device Transactions of the Chinese Society for Agricultural Machinery 2015,46 (9) 68-76

指夹式精量玉米排种器改进设计与试验

作  者：
王金武;唐汉;周文琪;杨文盼;王奇
单  位：
东北农业大学工程学院
关键词：
玉米;精量排种器;指夹式;设计;试验
摘  要：
为满足精密播种作业要求,采用夹持充种、振动清种及柔性导种等方式,对指夹式精量玉米排种器进行了改进设计。通过对其工作原理的分析,对关键部件取种指夹、振动区及零速导种带的结构参数进行了优化。为提高排种器作业性能,得出其最佳工作参数,以工作转速和弹簧丝径为试验因素,粒距合格指数、重播指数和漏播指数为试验指标进行二次正交旋转组合设计试验,运用Design-Expert 6.0.10软件进行试验数据处理,建立因素与指标之间数学模型以进一步优化。试验结果表明,弹簧丝径为0.77 mm,排种器转速小于19.2 r/min时,合格指数为86.90%,重播指数为9.62%,漏播指数为3.51%,合格指数比改进前提高13.5%,破损率为0.4%。在此基础上进行排种适应性试验,结果表明指夹式精量玉米排种器对大扁马齿型籽粒具有良好的适应性,满足精密播种农艺要求。
译  名：
Improved Design and Experiment on Pickup Finger Precision Seed Metering Device
作  者：
Wang Jinwu;Tang Han;Zhou Wenqi;Yang Wenpan;Wang Qi;College of Engineering,Northeast Agricultural University;
关键词：
Corn Precision seed metering device Pickup finger Design Experiment
摘  要：
In order to meet the requirements of precision planting,pickup finger precision seed metering device was designed,which can perform operations of seed clamping,seed vibration cleaning and seed flexible guiding. The optimal designs of structural parameters in key components,such as the pickup finger,the vibration cleaning area,and the zero speed guiding belt,were conducted based on the analysis of working principle. To improve the working performance of the metering device and obtain the best operation parameters,the quadratic general rotary unitized design was carried out with the rotational speed of seed meter and the wire diameter of spring as the experiment factors and the seeding qualified index,the relaying seed qualified index and the missing seed qualified index as the experimental indexes.Based on experimental data, a mathematical model was built by using the Design-Expert 6. 0. 10 software,the experimental factors were optimized,and the best combination was achieved. Test results showed that when the spring 's wire diameter was 0. 77 mm and the rotational speeds were less than19. 2 r / min,the seeding qualified index was 86. 90%,the relaying seed qualified index was 9. 62%,the missing seed qualified index was 3. 51%,the improved metering device exceeded the original one by13. 5% in terms of the seeding qualified index,the damage rate of corn seed was 0. 4%. On this basis,metering adaptability test was carried out which proved that the pickup finger seed precision metering device had good adaptability to corn of big flat dent,which met the requirements of precision seed sowing.

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