Authors

Abstract

For a peanut picking device with a feeding rate greater than 5 kg/s, the problem of low picking rate and high damage rate will occur during the picking process. A discrete element model is developed to determine the range of values of the main influencing factors affecting the peanut picking device. A three-factor, three-level orthogonal combination test was carried out with feeding volume, drum speed, and peanut picking gap as test factors to investigate the effects of the main influencing factors on the quality of peanut picking operation of the peanut picking device. The results of the field trials showed that the best results were achieved at the optimum combination of drum speed of 508 r·min-1, peanut picking gap of 22 mm, and feeding volumes of 6.3 kg/s. At this time, the peanut picking rate was 99.17%, and the peanut breakage rate was 0.91, meeting the standard technical requirements for mechanized peanut harvesting. The study results provide a theoretical basis for further enhancing the development of peanut combine harvesting equipment.

Abstract in Chinese

针对喂入量大于5kg/s的摘果装置在摘果过程中会产生摘果装置摘净率低、破损率高的问题。建立离散元模型，确定影响花生摘果装置的主要影响因素的取值范围。以喂入量、滚筒转速、摘果间隙为试验因素开展三因素三水平正交组合试验，探究主要影响因素对摘果装置摘果作业质量的影响。田间试验验证，结果表明，在最优参数组合滚筒转速为508r·min-1，摘果间隙为36mm，喂入量为6.3kg/s时，摘果作业效果最佳，此时摘果率为99.17%，破损率为0.91，满足花生机械化收获标准技术要求。研究结果为进一步提升花生联合收获机具研发提供了理论依据