Design and Optimization Tests of Reverse Spin-throwing Cyperus edulis Starting Device
Abstract
Aiming at the problems of high leakage rate, easy congestion and difficult soil fragmentation in the root system, which lead to difficulties in subsequent sorting and separation and low efficiency of combined harvesting. The discrete element simulation method was applied to establish the root-tuber-soil discrete element model of Cyperus edulis, the mechanism of the interaction between root-tuber-soil of Cyperus edulis on the fragmentation of the root-soil annulus of Cyperus edulis was analyzed, and a reverse spin-throw type starting device was designed. The results showed that the optimum combination of parameters for the reverse rotary tiller was as follows: phase angle of 61°, installation spacing of 150mm, soil fragmentation rate of 94.10%, buried fruit rate of 1.39%, under the same parameter settings with ordinary rotary tiller combination for field verification test, the results showed that buried fruit rate was reduced by 13.33%, soil fragmentation rate was increased by 3.15%, which met the technical requirements of Chinese Cyperus edulis mechanized harvesting standards, the research results can provide a theoretical reference basis for further improvement of Cyperus edulis harvesting equipment development.
Keywords: Cyperus edulis, discrete element simulation, starting device, design
Download Full Text:
PDFReferences
ZHANG Xuekun. Report on the research and development progress of my country’s Cyperus edulis industry [ J ]. China Rural Science and Technology, 2019(4) ; 67 -69. (in Chinese)
ZHANG Bin, LIU Jing, FAN Zhongxue et al. Research progress on mechanized seeding and harvesting technology and equipment of Cyperus edulis in saline-alkali land [J ]. Shandong Agricultural Sciences, 2019, 51(4) ; 144 -148. (in Chinese)
HUANG Minghua, WANG Xuehua, PANG Zhenyu. The research status and prospect of Cyperus serrata [ J ]. Crop Research, 2013, 27(3) : 293 -295, 301. (in Chinese)
LU Zhanyuan, LIU Не, ZHANG Jianzhong, et al. The current situation, problems and suggestions of the development of Cyperus esculentus industry[J]. Modern Agriculture, 2019(6) : 11 , 13. (in Chinese)
YANG Zhenle. Characteristics and research progress of Cyperus edulis[ J]. Northern Horticulture, 2017 ( 17) ; 192 -201. (in Chinese)
YANG Fan, ZHU Wenxue. The status quo and prospect of research on Cyperus esculentus[ J]. Cereals and Oils, 2020, 33(7) ; 4-6. (in Chinese)
RAHMAN S, CHEN Y. Laboratory investigation of cutting forces and soil disturbance resulting from different manure incorporation tools in a loamy sand soil [ J ] - Soil & Tillage Research, 2001 , 58(1 —2): 19 -29.
LIU J, CHEN Y, KUSHWAHA R L. Effect of tillage speed and straw length on soil and straw movement by a sweep [J]. Soil & Tillage Research, 2010, 109( 1 ) : 9 - 16.
FANG Huimin, JI Changying, AHMED Ali Tagar et al. Simulation analysis of straw displacement in straw — soil — rotary cutter system J ]. Transactions of the Chinese Society for Agricultural Machinery, 2016, 47 ( 1 ) : 60 -67. (in Chinese)
DING Weimin, WANG Yaohua, PENG Songzhi. Performance analysis of forward and reverse rotary tillers and comparative test of soil cutting torque[ J]. Journal of Nanjing Agricultural University, 2001 , 28( 1 ) ; 113-1 17. ( in Chinese)
HE Xaioning, ZHANG Xuejun, ZHAO Zhuang, et al. Design and experiments of oil soya bean lowering resistance excavation device based on discrete element method[J]. Transactions of the Chinese Society for Agricultural Machinery, 2021 , 52( 12) ; 124 -133. (in Chinese)
GUO Jun, JI Changying, FANG Huimin, et al. Experimental analysis on the displacement of soil and straw after rotary tillage by forward and reverse rotation[J]. Transactions of the Chinese Society for Agricultural Machinery, 2016, 47 (5 ) : 21 -26. ( in Chinese)
SUN Jivu, WANG Yueming, MA Yunhai, et al. DEM simulation of bionic subsoilers (tillage depth >40 cm) with drag reduction and lower soil disturbance characteristics[ J]. Advances in Engineering Software, 2018, 119 ; 30 -37.
QI Jiangtao, AN Shiguan, KAN Za, et al. Discrete element-based calibration of simulation parameters of Cyperus esculent us L. (tiger nut) planted in sandy soil [ J ] - Journal of Food Processing and Preservation, 2021 , 45(7) ; 15631.
PELLEW A. Advanced soil mechanics[ J ]. Geotechnical Engineering, 2009, 162(3) : 189 - 190.
UCGUL M, FIELKE J M, SAUNDERS C. 3D DEM tillage simulation: validation of a hysteretic spring (plastic) contact model for a sweep tool operating in a cohesionless soilL [J] - Soil & Tillage and Research, 2014, 144( 1 ) ; 220 -221.
BECHERT D W, BRUSE M, HAGE W, et al. Experiments on drag-reducing surfaces and their optimization with an adjustable geometryl [J ]. Journal of Fluid Mechanics, 1997, 338: 59 -87.
FANG Huimin, JI Changying, FARMAN Ali Chandio, et al. Analysis of soil dynamic behavior during rotary tillage based on distinct element method[ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2016, 47 (3 ): 22 - 28. (in Chinese)
GAO Yulan. Simulation optimization and experimental research of reverse-rotating straw return machine based on discrete element method[D]. Hefei: Anhui Agricultural University, 2019. (in Chinese)
Refbacks
- There are currently no refbacks.
