Authors

Abstract

Aiming to address the limited space and the inapplicability of large harvesting equipment in Chinese greenhouses, a small electric double-row leek harvester was designed. This machine is capable of cutting, clamping, transporting, and collecting leeks simultaneously. A reciprocating cutting device was employed to accommodate varying row spacings. To make the machine suitable for small greenhouse environments, the parameters of the torsion clamping conveyor belt were optimized to reduce the overall size. Through theoretical analysis of the clamping and conveying system, the cutting mechanism, and the parameters for coordinated clamping-cutting operations, the structural design and working parameters were determined. A prototype was developed, and field experiments were conducted. The results showed that when the machine's forward speed was 0.3 m/s, the linear speed of the cutting knife was 0.66 m/s, and the conveyor belt speed was 0.42 m/s, the average damage rate was 4.87%, meeting the requirements for mechanized leek harvesting. This study provides a reference for the design of leek harvesters.

Abstract in English

针对中国设施温室空间小、大型收获设备不适应等问题，设计了小型电动双行韭菜收获机，可一次性完成韭菜切割、夹持、输送、装框作业。采用往复式切割装置适应不同行距韭菜切割，优化扭转夹持输送带参数，减小整机尺寸，适应温室小空间作业。通过对夹持输送装置、切割装置以及夹持-切割协同作业参数进行理论分析，确定了夹持输送装置、切割装置的结构、工作参数。试制样机并进行了田间试验，试验结果表明，当机器前进速度为0.3 m/s，割刀线速度为0.66 m/s、输送带速度为0.42 m/s时，平均作业损失率为4.87%，满足韭菜机械化收获要求。本研究旨为韭菜收获机的设计提供参考。