Authors

Abstract

With the development of agricultural mechanization and the expansion of fruit tree cultivation, effective harvesting techniques have become crucial for boosting yield and reducing labor costs. This is particularly true in hilly areas with complex terrains where traditional, large-scale harvesting machinery struggles to be effective. This study designed and experimentally validated a portable walnut harvester based on electromagnetic excitation technology, aiming to enhance harvesting efficiency and reduce labor intensity in these areas. The harvester integrates electromagnetic excitation technology with the design of a lightweight, handheld electric cart, optimizing the machine's adaptability and operational flexibility across various terrains. Through field testing, we evaluated the vibration effects of the machine under different branch diameters and impact locations, and optimized the impact parameters using Design-Expert software. Experimental results indicate that the machine can operate effectively at maximum pitch angles while delivering powerful impact forces to harvest walnuts efficiently. Furthermore, by optimizing the vibration frequency and impact location for branches of different diameters, we provided recommended parameters for using the equipment. This study not only demonstrates the potential application of electromagnetic excitation technology in agricultural machinery but also offers a viable mechanized solution for orchards in similarly complex terrains.

Abstract in Chinese

随着农业机械化的发展和果树种植业的扩展，有效的采摘技术成为提升产量和降低劳动成本的关键。尤其在地形复杂的丘陵地区，传统的大型采摘机械难以发挥效用。本研究设计并实验验证了一种基于电磁激励技术的便携式核桃采摘机，旨在提高这些地区的采摘效率并减轻劳动强度。该采摘机结合了电磁激励技术和轻便的手扶式电动推车设计，优化了机械在不同地形下的适应能力和操作灵活性。通过实地测试，我们评估了机器在不同枝杆直径和撞击位置下的激振效果，并采用Design-Expert软件进行了撞击参数的优化。实验结果表明，该机械能在最大俯仰角度下有效操作，同时提供强大的撞击力，有效地采摘核桃。此外，通过对不同直径枝杆的激振频率和撞击位置的优化，提供了设备使用的推荐参数。该研究不仅展示了电磁激励技术在农业机械中的应用潜力，也为类似地形复杂的果园提供了一种可行的机械化解决方案。