Authors

Abstract

Compared with manual harvesting of L. barbarum, existing large-scale harvesters can improve harvesting efficiency to some extent. However, their intermittent operation mode still restricts overall efficiency. Therefore, this study designed a continuous vibration-based L. barbarum harvesting device. Plackett–Burman experiments indicated that the vibration angle, vibration frequency, and spacing between the upper and lower vibrating rods were the primary factors affecting the harvesting performance. Further parameter optimization experiments were conducted by considering the harvesting rate of ripe fruits, the mis-harvesting rate of unripe fruits, and the damage rate of ripe fruits. The optimal parameter combination was determined as a vibration angle of 46°, a vibration frequency of 9 Hz, and a spacing of 62 mm between the upper and lower vibrating rods. Based on these parameters, performance verification tests were carried out. The results showed that the harvesting rate of ripe fruits reached 85.40%, the mis-harvesting rate of unripe fruits was 4.61%, and the damage rate of ripe fruits was 3.19%. These findings provide technical and equipment support for the development of continuous mechanized harvesting of L. barbarum.

Abstract in Chinese

相较于人工采摘枸杞，现有大型枸杞采收机能够在一定程度上提高采收效率，但受限于其间歇式的作业方式，作业效率仍有待进一步提高，因此，本研究设计了一种枸杞连续采收振动装置。通过Plackett-Burman试验分析表明，影响连续作业采收效果的主要因素为振动角度、振动频率和上下层杆间距。进一步通过参数优化试验，从成熟果实采净率、未熟果误采率和熟果损伤率三个方面对上述关键参数进行优化，确定最优参数组合为：振动角度46°、振动频率9Hz、上下层振动杆间距62mm。基于此对枸杞连续采收振动装置的性能进行试验验证，结果表明，熟果采摘率为85.40%，未熟果误采率为4.61%，熟果损伤率为3.19%，为枸杞连续机械化采收的发展提供了技术与装备支撑。