步行式甘薯碎蔓还田机的设计与试验
为缓解中国丘陵坡地小田块甘薯碎蔓机械短缺问题,研究设计了步行式甘薯碎蔓还田机。该文在分析整机结构的基础上具体阐述了甘薯碎蔓还田机工作原理,阐明了碎蔓装置、刀座防磨损设计、导向轮调节机构和传动系统等关键部件的设计。甘薯秧蔓粉碎合格率、留茬高度和伤薯率是评价甘薯碎蔓还田机的主要指标,该文在单因素试验基础上运用Box-Benhnken的中心组合试验方法对甘薯碎蔓还田机的工作参数进行试验研究,以刀辊转速、离地间隙、刀片间距进行三因素三水平二次回归正交试验设计。建立了响应面数学模型,分析了各因素对作业质量的影响,同时,对影响因素进行了综合优化。试验结果表明:粉碎合格率影响显著顺序为刀辊转速(29)离地间...
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Published in | 农业工程学报 Vol. 33; no. 16; pp. 8 - 17 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
农业部南京农业机械化研究所,南京,210014
2017
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Subjects | |
Online Access | Get full text |
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Summary: | 为缓解中国丘陵坡地小田块甘薯碎蔓机械短缺问题,研究设计了步行式甘薯碎蔓还田机。该文在分析整机结构的基础上具体阐述了甘薯碎蔓还田机工作原理,阐明了碎蔓装置、刀座防磨损设计、导向轮调节机构和传动系统等关键部件的设计。甘薯秧蔓粉碎合格率、留茬高度和伤薯率是评价甘薯碎蔓还田机的主要指标,该文在单因素试验基础上运用Box-Benhnken的中心组合试验方法对甘薯碎蔓还田机的工作参数进行试验研究,以刀辊转速、离地间隙、刀片间距进行三因素三水平二次回归正交试验设计。建立了响应面数学模型,分析了各因素对作业质量的影响,同时,对影响因素进行了综合优化。试验结果表明:粉碎合格率影响显著顺序为刀辊转速(29)离地间隙(29)刀片间距;留茬高度影响显著顺序为离地间隙(29)刀辊转速(29)刀片间距;伤薯率影响显著顺序为离地间隙(29)刀辊转速(29)刀片间距;田间试验结果表明:最优工作参数组合为刀辊转速为1 950 r/min、离地间隙为25 mm、刀片间隙为40 mm,此时秧蔓粉碎合格率为94.88%、留茬高度为47.08 mm、伤薯率为0.23%,与理论优化值对比误差小于5%。研究结果可为步行式甘薯碎蔓还田机的结构完善和作业参数优化提供参考。 |
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Bibliography: | 11-2047/S agricultural machinery; optimization; design; sweet potato vines crushing machine; response surface methodology Sweet potato is an important food crop and can also be used as raw material for foodstuffs, animal feed and raw materials for renewable energy. Furthermore, research shows that it has anti-cancer effects. As sweet potato vines are long and difficult to be separated. The vines cleaned up before sweet potatoes harvest has a great role in promoting to improve the quality of sweet potato and the sweet potato harvest efficiency. In order to alleviate the shortage of sweet potato vines crushing machine in the hilly areas of China, the walking sweet potato vines crushing machine was designed in this paper. Based on the analysis of the whole structure, we expatiated on the working principle of the sweet potato crushing machine, and analyzed the structure of key components such as crushed parts, anti-wear technology, ground lifting mechanism and transmission mechanism. Before the machine started to w |
ISSN: | 1002-6819 |
DOI: | 10.11975/j.issn.1002-6819.2017.16.002 |