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<p>Aiming at poor profiling effect and uneven stubble caused by complex terrain of the suspended mower and flattening machine while harvesting alfalfa in hilly and mountainous areas, a profiling mechanism for a suspended mowing and flattening machine was designed, and the profiling performance of the mechanism on undulating, sloping, potholed and raised roads was simulation analyzed by applying multi-body dynamics software RecurDyn. The results show that by coordinating the force of the suspension spring adjustment device and the profiling device, the profiling mechanism can control the ground pressure of the cutting table within 2000&#xa0;N, achieving adaptive adjustment on slopes of ± 30°, undulating roads of 250&#xa0;mm, and raised roads with depressions or protrusions of ± 50&#xa0;mm. The key technical parameters of profiling springs and suspension springs had been precisely calculated, the maximum working load of the profiling spring is 9014&#xa0;N, and that of the suspension spring is 10,290&#xa0;N, meeting the allowable shear stress requirements for Class III loads. The effectiveness of the profiling mechanism was verified by field experiments, and the cutting height was 63.2&#xa0;mm and the flattening rate was 95.1%. The research results can provide theoretical and technical support for the design and optimization of forage harvesting machinery.</p>

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Design and dynamic analysis of the profiling mechanism for suspended mowing and flattening machines in hilly and mountainous areas

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月18日

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  • Jianji Wang,
  • Baolong Geng,
  • Pengfei Li,
  • Jinlong Yang,
  • Keping Zhang

摘要

Aiming at poor profiling effect and uneven stubble caused by complex terrain of the suspended mower and flattening machine while harvesting alfalfa in hilly and mountainous areas, a profiling mechanism for a suspended mowing and flattening machine was designed, and the profiling performance of the mechanism on undulating, sloping, potholed and raised roads was simulation analyzed by applying multi-body dynamics software RecurDyn. The results show that by coordinating the force of the suspension spring adjustment device and the profiling device, the profiling mechanism can control the ground pressure of the cutting table within 2000 N, achieving adaptive adjustment on slopes of ± 30°, undulating roads of 250 mm, and raised roads with depressions or protrusions of ± 50 mm. The key technical parameters of profiling springs and suspension springs had been precisely calculated, the maximum working load of the profiling spring is 9014 N, and that of the suspension spring is 10,290 N, meeting the allowable shear stress requirements for Class III loads. The effectiveness of the profiling mechanism was verified by field experiments, and the cutting height was 63.2 mm and the flattening rate was 95.1%. The research results can provide theoretical and technical support for the design and optimization of forage harvesting machinery.