EFFECTS OF MOISTURE CONTENT ON MECHANICAL CRUSHING PERFORMANCE OF SOYBEAN SEEDS AND ITS APPLICATION IN MECHANIZED HARVESTING

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.