农机触土部件减粘脱附研究现状与展望

Research Status and Prospects of Reducing Adhesion and Facilitating Detachment on Ground-contact Components of Agricultural Machinery

摘要:

农机触土部件的土壤粘附问题是制约农业机械作业质量、生产效率与服役寿命的关键瓶颈,随着农业装备向大型化、复式化、高速化发展,对其减粘脱附性能的要求愈发苛刻。本文系统分析了土壤粘附的形成机理及其影响 因素,重点综述了振动、气动、加热、结构优化、表面技术及仿生设计等减粘脱附技术在旋耕刀、开沟器、深松铲、挖掘铲、镇压轮、移栽器等农机触土部件相关研究及应用的国内外现状,剖析了当前研究存在的不足,并从粘附失效理论构建、高性能涂层材料研发、仿生结构创新设计等方面展望了未来研究方向,以期为农机触土部件减粘脱附技术的创新突破与工程应用提供理论参考和技术借鉴。

Abstract:

Agricultural machinery serves as the backbone of modern agricultural production, as its operational performance and reliability directly impact national food security. As the mechanization of agriculture and the upgrading of agricultural equipment continue to advance, there is an increasing demand for enhanced performance in soil-engaging component, such as plowshares, tillage tools, and trenchers. Soil adhesion during operation leads to increased resistance and energy consumption, resulting in irregular furrowing, inadequate soil breakup, and uneven compaction, ultimately diminishing operational quality and efficiency. Thus, addressing soil adhesion in soil-engaging component is essential for maximizing the performance potential of agricultural equipment. The mechanisms of soil adhesion formation and the factors influencing it were systematically analyzed. A comprehensive review of the current state of research, both domestically and internationally, on technologies for reducing adhesion and facilitating detachment in agricultural machinery was provided. These included vibration, pneumatic methods, heating techniques, structural optimization, surface treatments, and biomimetic designs. Despite significant advancements in research aimed at reducing soil adhesion on agricultural machinery, current technologies still had considerable room for improvement to meet the high-quality development demands of agricultural equipment in China. While vibration, pneumatic, thermal, and structural adhesion reduction techniques showed effectiveness, they often require additional power sources or auxiliary systems, complicating machinery design and increasing energy consumption. Furthermore, many of these techniques were optimized for specific soil conditions, lacking comprehensive studies on their adaptability across diverse soil types and moisture levels. Surface engineering technologies, while capable of producing coatings with excellent initial adhesion reduction properties, often suffered from performance degradation due to wear and mechanical impacts during actual operations. Existing research tended to focus too heavily on optimizing single properties of coatings, with insufficient attention to the synergistic enhancement of wear resistance and anti-adhesion capabilities. Additionally, biomimetic approaches, though promising, often lack universal design models that can adapt to various conditions, and they required further exploration of cost implications and complexity in manufacturing processes. The operational conditions for soil-engaging component were harsh, and understanding the complex mechanisms of soil adhesion was vital for enhancing their adhesion reduction and detachment performance. Future research should focus on dynamic, multi-field coupling studies of soil-component interfaces, the development of specialized low-energy adhesion reduction materials, and the transition from static to dynamic biomimetic designs, fostering innovative, cost-effective solutions that ensure high reliability.