正负压气吸式精量排种器设计与试验
Design and test of positive and negative pressure air-suction seed-metering device
赵晓顺 1侯壮壮 1史文琴 2于华丽 1李颖 3赵达卫 1李新领1
作者信息
- 1. 河北农业大学 机电工程学院,河北 保定 071001
- 2. 河北省平山县农业机械化学校,河北 平山 050400
- 3. 张家口市农机技术推广站,河北 张家口 075000
- 折叠
摘要
为了更好地适配非圆小籽粒种子的播种,解决机械式排种器易伤种,对种子尺寸适应性差的问题,设计了 1 种正负压气吸式精量排种器.根据农艺要求对排种器整体进行了设计;同时以小麦为研究对象,通过单因素试验,分析了吸种负压、排种器转速以及投种高度 3 个因素对排种器性能的影响;通过响应面试验,得到了较优的参数组合:吸种负压为-3.5 kPa,排种器转速为 19 r/min,投种高度为 180 mm;对最优参数下精量排种器进行台架试验,结果表明,合格率为 80.62%,重播率为 9.22%,漏播率为 10.16%.符合JB/T—10293-2013《单粒(精密)播种机技术条件》的要求.
Abstract
In order to solve the problems of seed damage and poor adaptability to seed size of the mechanical seed metering device,an air-suction precision seed metering device was designed.The seed metering device was designed according to the agronomic requirements.Wheat seed was applied for experiments.The single factor test was employed to analyze the effects of negative pressure of seed suction,rotation speed and seeding height on the performance of the seed metering device.And the optimal parameter combination was obtained through the response surface experiments:negative pressure of seed suction was-3.5 kPa;rotaion speed was 19 r/min;and seeding height was 180 mm.The optimized parameters were used for the test,and the final results were as follows:the qualified rate was 80.62%;the replay rate was 9.22%;and the missed rate was 10.16%.Our results suggested that the air-suction precision seed metering device meets the requirements of JB/T—10293-2013 Technical conditions of single seed(precision)seeder.
关键词
气吸式排种器/精量播种/正负压组合/单因素试验/响应面试验Key words
air-suction seed-metering device/precision seeding/positive and negative pressure combination/single factor test/response surface test引用本文复制引用
基金项目
中央引导地方科技发展资金项目(236Z7202G)
河北省重点研发计划项目(213227215D)
张家口市科技重大专项项目(2311012HC)
出版年
2024
国家科技期刊平台
NSTL
万方数据