Authors

Abstract

Traditional furrow openers used for corn planting in saline-alkali soils often face challenges such as high resistance, excessive soil disturbance, and unstable furrow depth, all of which negatively affect planting quality. This study presents an optimized design of a double-disk furrow opener for precision corn planting under saline-alkali conditions. The structure and working principle of the opener were described, and its force mechanism analyzed. Key structural parameters, including disk diameter, disk angle, and convergence angle of the disk points, were identified, with furrow resistance and furrow depth stability selected as evaluation indicators. Using a Box-Behnken design combined with EDEM simulation, the soil-machine interaction model was established, followed by variance analysis. The optimal parameters were determined as a disk diameter of 344 mm, disk angle of 12.9°, and convergence angle of 58.4°. Under these conditions, the operating resistance of the furrow opener was 370.234 N, and the furrow depth stability coefficient reached 93.87%. The results provide a theoretical basis for reducing furrow resistance and improving planting stability and efficiency in saline-alkali soils.

Abstract in Chinese

针对盐碱地玉米播种中，传统开沟器易出现工作阻力大、土壤扰动明显、开沟深度不稳定等问题，进而影响播种质量，本文对盐碱地玉米精量播种机双圆盘开沟器展开优化设计。首先，明确双圆盘开沟器的结构组成与工作原理，通过力学分析推导其受力机制；其次，确定关键参数圆盘直径、圆盘夹角、圆盘聚点位置，以开沟作业阻力和开沟深度稳定性系数为评价指标，采用Box-Behnken设计方法结合EDEM离散元仿真软件构建盐碱土-开沟器互作模型，开展仿真试验并进行方差分析；确定最优结构参数组合为：圆盘直径 344mm、圆盘夹角12.9°、圆盘聚点位置58.4°，此时开沟器作业阻力为370.234N，开沟深度稳定性系数为93.87%。本研究为降低盐碱地播种作业阻力、提升播种稳定性和效率提供了理论依据。