气吸双层滚筒式精量排种器设计与试验

doi:10.13733/j.jcam.issn.2095-5553.2021.10.04

摘要/Abstract

摘要： 为降低播种动力消耗,提高播种质量,适应杂交水稻精量育秧播种农艺要求,设计一种气吸双层滚筒式排种器。阐述该排种器的工作原理、关键部件结构及参数设计,通过对排种过程的种子进行受力分析,确定播种质量与滚筒转速以及吸孔负压的关系。选取合格率和重播率为试验指标,振动频率、滚筒转速以及滚筒负压参数作为试验因素进行中心复合试验。试验结果表明:当振动频率为51.8 Hz、滚筒转速为8 r/min及滚筒负压参数3.4 kW时,平均合格率为93.21%,平均重播率为3.97%,该排种器能够满足播种要求。

关键词: 气吸双层滚筒, 育秧播种, 排种器, 中心复合试验

Abstract: In order to reduce the power consumption, improve the sowing quality, and meet the agronomic requirements of precision seedling raising and sowing of hybrid rice, an independent airway type doublelayer air suction roller seedling raising and seeding device was designed in this paper. The working principle of the seeding device, the structure of key components, and parameter design were described. The relationship between seeding quality, cylinder speed, and suction hole negative pressure was determined by force analysis of seeds in the process of seeding. The central composite test was carried out with qualified rate and repetition rate as experimental indexes and vibration frequency, drum speed, and drum negative pressure parameters as test factors. The results showed that the average qualified rate was 93.21%, the average replanting rate was 3.97% when the vibration frequency was 51.8 Hz, the roller speed was 8 r/min, and the negative pressure parameter was 3.4 kW. The seed sowing device can satisfy the requirements of hybrid rice seedling and sowing.

Key words: double layer airsuction cylinder, seeding for nursing, seed sowing device, central composite facecentered design

中图分类号:

S223.2

纪要, 张文毅, 刘宏俊, 顾义兵, 范静, . 气吸双层滚筒式精量排种器设计与试验[J]. 中国农机化学报, 2021, 42(10): 22-28.

Ji Yao, Zhang Wenyi, Liu Hongjun, Gu Yibing, Fan Jing. . Design and experiment of doublelayer roller precision seed sowing device[J]. Journal of Chinese Agricultural Mechanization, 2021, 42(10): 22-28.

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