Authors

Abstract

This study addresses the issue of grain crushing during the mechanical harvesting of soybeans, systematically analyzing the effect of moisture content on its mechanical crushing characteristics. Single-factor and multi-factor orthogonal experimental methods were employed to record the grain crushing process through compression tests combined with high-speed camera technology, allowing for a quantitative analysis of moisture content, loading speed, compression direction, and their interactions. Field experiments were conducted in five different planting areas, The results confirmed that when the moisture content was controlled within the range of 13%-17%, the grain crushing force could be maintained at a stable level between 137N and 182N, At the same time, the crushing rate was reduced to a minimum value of 2.15%±0.43%, generally remaining within a good range of 1.09% to 3.34%. The research findings provide a necessary theoretical basis for improving the design of key components of harvesting machinery.

Abstract in Chinese

本研究针对大豆机械收获过程中的籽粒破碎问题，系统分析含水率对其力学破碎特性的影响，采用单因素试验和多因素正交试验方法，通过压缩试验并结合高速摄像技术记录籽粒破碎过程，对含水率、加载速度、压缩方向及其交互作用进行定量分析。在五个不同种植区域开展田间试验，结果验证当含水率控制在13%-17%范围内时，籽粒压破力能够保持在137N~182N之间的稳定水平，此时破碎率降至最低值2.15%±0.43%，总体维持在1.09%~3.34%的良好范围内。研究结果为改进收获机械关键部件的设计提供了重要的理论依据。