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<p>Long-distance soil delivery required for wide-row ridge cultivation challenges the directional filling capabilities of machines. In this regard, a wall-diversion integration is proposed that enables spiral drive interact with envelope boundaries to improve lateral particle mass transfer. The envelope configuration with convergent moldboard causes gathered particles to be accelerated cyclically, while the spiral rototiller cooperates with radial fender to guide particles in a directional manner for lateral throwing. The DEM-MBD interaction simulation with heterogeneous clay tillage layers shows that compared with the conventional cultivator, such integrated earth cultivator with the optimal degree of envelope enhances the soil disturbance rate and kinetic energy by 13.52% and 78.37%, resulting in an increase in the lateral mass accumulation rate and accessible delivery distance of 100.11% and 15.69%. Field experiments address the effects of critical operating variables on ridging performance. The ridging height is thus improved by 53.43% without expanding tillage power consumption, while exhibiting a more substantial ridge filling profile. This provides direct evidence for promoting ridge accumulation by optimizing lateral mass transfer capacities.</p>

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A particle diversion approach that enables spiral drive to interact with envelope boundaries for promoting soil mass transfer

  • 期刊论文

  • 发表日期：

    2025年6月9日

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  • Biao Zhang,
  • Weimin Shen,
  • Yingying Zhu,
  • Jing Chen

摘要

Long-distance soil delivery required for wide-row ridge cultivation challenges the directional filling capabilities of machines. In this regard, a wall-diversion integration is proposed that enables spiral drive interact with envelope boundaries to improve lateral particle mass transfer. The envelope configuration with convergent moldboard causes gathered particles to be accelerated cyclically, while the spiral rototiller cooperates with radial fender to guide particles in a directional manner for lateral throwing. The DEM-MBD interaction simulation with heterogeneous clay tillage layers shows that compared with the conventional cultivator, such integrated earth cultivator with the optimal degree of envelope enhances the soil disturbance rate and kinetic energy by 13.52% and 78.37%, resulting in an increase in the lateral mass accumulation rate and accessible delivery distance of 100.11% and 15.69%. Field experiments address the effects of critical operating variables on ridging performance. The ridging height is thus improved by 53.43% without expanding tillage power consumption, while exhibiting a more substantial ridge filling profile. This provides direct evidence for promoting ridge accumulation by optimizing lateral mass transfer capacities.