DUN Guo-qiang,YANG Yong-zhen,DING Yu-cheng,et al.Design and Test of the Swing Seed Plate Feed for Soybean Breeding[J].Soybean Science,2019,38(05):779-785.[doi:10.11861/j.issn.1000-9841.2019.05.0779]
摆盘式大豆育种排种器的设计及试验
- Title:
- Design and Test of the Swing Seed Plate Feed for Soybean Breeding
- Keywords:
- Soybean; EDEM; Quick-return characteristics; Seed metering device; Bench test
- 文献标志码:
- A
- 摘要:
- 为提高摆盘式大豆小区育种排种器的作业效率，通过理论分析的方法，对排种盘直径、型孔直径以及排种盘摆动频率进行理论分析，得到最佳的参数范围。将曲柄摇杆机构的急回特性用于排种器的设计中，利用EDEM仿真试验的方法，验证排种器的排种性能，根据理论研究得到的参数，制造样机并进行台架试验。结果表明：样机台架试验的合格率的平均值为83.04%，重播指数的平均值为2.26%，漏播指数的平均值为14.7%，符合《中耕作物精密播种机产品质量分等》要求。排种器的设计中利用曲柄摇杆机构的急回特性，使摆动速度快时进行排种，摆动速度慢时进行充种，既保证了排种工作的稳定性又提高了排种器的作业效率。
- Abstract:
- In order to improve the operation efficiency of the swing seed plate feed for field plot experiment, the theoretical analysis method is used to analyze the diameter of the seed tray. It obtained the diameter of the hole, the swing frequency of the seeding disc, and the optimal parameter range. The quick return characteristics of the crank rocker mechanism were used in the design of the seed metering device. The EDEM simulation test method was used to verify the seeding performance of the seed metering device. The parameters were obtained by theoretical research, manufacturing prototypes and bench tests. The results showed that the average yield of the prototype bench test was 83.04%, the average value of the replay index was 2.26%, and the average value of the missed broadcast index was 14.7%. The results met the requirements of ‘Quality classification of medium tillage crop precision seeder’. In the design of the seed metering device, the quick return characteristic of the crank rocker mechanism was adopted, so that the seeding speed was fast when the seeding was performed. When the swinging speed was slow, the seeding was performed, thereby the stability of the seeding work was ensured and the operation effectiveness of the seed metering device was improved.
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