Authors

Abstract

To optimize the structure of soybean precision seeder and improve the performance of sowing, a new rotary spoon precision seeder is designed, and the key component structure is designed using numerical calculation methods. Using a combination of bench experiments and field experiments for parameter optimization experiments, a multi factor quadratic orthogonal rotation combination design experiment is adopted. The experimental data is analyzed and processed using Design Expert 8.0.6 software to seek the optimal combination of parameters. The results show that when the working speed is 24.56-33.72 r/min and the forward speed is in the range of 1.31-2.21 m/s, the seeding qualification index is greater than 90% and the coefficient of variation is less than 10%, meeting the requirements of excellent seeding standards. This study uses a rotary spoon seeder to sow soybeans, providing a new idea and reference for the development of precision soybean seeders.

Abstract in Chinese

为优化设计大豆精密排种器结构，提高播种作业性能，设计一种新型转勺式精密排种器，利用数值计算方法设计关键部件结构。利用台架试验与田间试验相结合的方法进行参数优选试验，采用多因素二次正交旋转组合设计试验，运用Design Expert 8.0.6软件分析处理试验数据，寻求最优作业参数组合。结果表明：工作转速24.56~33.72 r/min，前进速度1.31~2.21 m/s范围时，播种合格指数>90%，变异系数<10%，达到播种优等标准要求。该研究利用转勺式排种器播种大豆，为大豆精密排种器的研发提供了创新思路和借鉴参考。