INFLUENCE OF EXCITATION POSITION ON MECHANIZED PICKING EFFECT OF CAMELLIA OLEIFERA

ABSTRACT Camellia oleifera oil is easily absorbed by the human body and has a high development prospect in the research and development of new drugs. However, the labor intensity involved in picking has limited the development of the camellia oil industry. Vibratory mechanized harvesting is considered to be an effective way to solve harvesting difficulties. In this study, the whole process of accelerating the mechanical vibration picking is analyzed theoretically, according to different vibration positions (height), and a vibration picking experiment is carried out. The ratio of the optimal excitation location to the years of growth of Camellia oleifera was found to be between 16 and 20. It was observed that with the increase of camellia growing years, this ratio gradually decreased, and its optimal vibration position showed an increasing trend. Further, when the excitation time was greater than 8 s, the fruit removal rate did not continue to increase, but the buds and leaves falling continued to decrease. This study can effectively improve the efficiency of camellia oil fruit picking and reduce the drop-off of camellia buds and leaves.摘要：油茶（Camellia oleifera）籽油易被人体吸收，在新药研发领域拥有较高的开发前景。然而，采摘环节的高强度人工劳动制约了油茶籽油产业的发展。振动机械化采收被认为是解决采摘难题的有效途径。本研究针对不同振动位置（高度），对机械振动采果的全过程开展理论分析，并实施了振动采摘试验。研究发现，最优激振位置与油茶生长年限的比值区间为16至20。观测结果表明，随着油茶生长年限的增加，该比值逐渐降低，而最优振动位置则呈上升趋势。进一步研究显示，当激振时长超过8秒时，果实脱落率不再持续提升，但芽叶脱落量持续减少。本研究可有效提升油茶果采摘效率，同时减少油茶芽叶的脱落。