Development and Experiment of Vertical Spiral Cutter for Soil Loosening and Weeding in Camellia oleifera Forest
Abstract
Due to the lack of management, Camellia oleifera forests would encountered problems such as soil compaction and mixed growth of grass and shrubs. In order to achieve integrated operations of soil loosening, weeding, and clearing shrubs in low and intensive Camellia oleifera forests, a vertical spiral machine for soil loosening and weeding was developed. The vertical spiral cutter was designed by analyzing the physical and mechanical characteristics of common weeds and miscellaneous shrubs roots in Camellia oleifera forests, and combined with motion analysis of cutting tools. The root-soil composite model was established by using Hertz-Mindlin bonding contact model, with the goal of reducing power consumption, the parameters of the cutting tool were simulated and optimized, and the disturbance of root-soil composite were analyzed by the optimized cutter. In addition, an actual cutter was manufactured and the soil bin experiment was conducted, and it verified the reliability of the simulation results. The simulation results showed that the disturbance of soil-root complex by the optimized vertical spiral cutter can reach 91.41%, the maximum power consumption when cutting soil alone was 0.16kW and the maximum power consumption when cutting the root-soil composite was 0.77kW. The soil bin experiment results showed that the coefficient of stability of the plowing depth was 92.34%, the soil fragmentation rate was 95.00%, and the root removal rate was 95.30%;the maximum torque measured in the case of cutting soil alone was 7.93N·m and it was 6.57% lower than the simulation value; the actual measured maximum torque was 34.84N·m in the case of cutting the root-soil composite, and it was 4.91% lower than the simulation value; the correctness of the design was verified by the close agreement between the experimental and simulation values. The vertical spiral soil loosening and weeding machine met the requirements for soil loosening, weeding, and irrigation operations in Camellia oleifera forest in hilly and mountainous areas.
Keywords: Camellia oleifera, forest, soil loosening, vertical spiral cutter, discrete element, root-soil composite
Download Full Text:
PDFReferences
LAI Pengying, XIAO Zhihong, LI Peiwang, et al. Research on utilization of Camellia oleifera abel. resources and industrial development status[J]. Biomass Chemical Engineering, 2021 , 55( 1 ) ; 23 -30. (in Chinese)
ZHANG P, WEI T, JIA Z, et al. Effects of straw incorporation on soil organic matter and soil water-stable aggregates content in semiarid regions of Northwest China [J]. PLoS One, 2014, 9(3) : e92839.
HE Zhixiang. The regulation patterns and technology of tree structure in Camellia oleifera [ D]. Changsha; Central South University of Forestry and Technology, 2013. (in Chinese)
LIU Xiaovan, WANG Yi, YE Miao. Study on reconstruction technology of Camellia oleifera abel. low-yield forest [J] . Forest by-Product and Speciality in China, 2023( 1 ) ; 34 -36. (in Chinese)
QI Zhaoxin, YU Dongmei, LIU Yabin, et al. Experimental research on factors affecting shear strength of halophyte root - soil composite systems in cold and arid environments J . Journal of Engineering Geology, 2017, 25 (6 ); 1438 - 1448. (in Chinese)
LD Jinqing, LIU Qihui, LI Zihui, et al. Design and experiment of soil cultivating device of plowshare potato field cultivator [J] .Transactions of the Chinese Society for Agricultural Machinery, 2021 , 52(7) ; 71 -82. (in Chinese)
LI Yali, CAO Zhonghua, ZHAN Xiaomei, et al. Optimal design and test of orchard chisel-type shovel subsoiler [ J]. Transactions of the Chinese Society for Agricultural Machinery, 2021 , 52(Supp. ) : 19 -25. (in Chinese)
LIANG Fang, W ANG Decheng,YOU Yong, et al. Design and experiment of root-cutter with fertilization and reseeding compound remediation machine for grassland [ J]. Journal of Jilin University( Engineering and Technology Edition) , 2022, 52( 1 ) ; 231 - 241. (in Chinese)
ZHANG Xuening, YOU Yong, WANG Decheng, et al. Design and experiment of soil-breaking and root-cutting cutter based on discrete element method[ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2022, 53 (11); 176 - 187. ( in Chinese)
ZIIU Huibin, WU Xian, BAI Lizhen, et al. Development of the biaxial stubble breaking no-tillage device for rice stubble field based on EDEM - ADAMS simulation [J] . Transactions of the CSAE, 2022, 38( 19) ; 10 -22. ( in Chinese)
RAVSHANOV H. Parameters of the furrow cutter with levellers of the combined machine[ C] // E3S Web of Conferences. EDP Science, 2023: 390.
ALIAKBAR S, JOHN M F J, JACKY M A D, et al. Soil translocation by narrow openers with various bent leg geometries[ J]. Biosystems Engineering, 2014, 127: 41 -49.
ZIIAO Shuhong, GAO Lianlong, YUAN Yiwen, et al. Maize straw motion law in subsoiling operation using discrete element method [J ]. Transactions of the CSAE, 2021 , 37(20) : 53 -62. (in Chinese)
DING Zhaojun, BAI Yang. The current and future studies on plant root development and root microbiota[J ]. Science China: Life Sciences, 2021 , 51 ( 10) : 1447 - 1456. (in Chinese)
W ANG Jinwu, GUAN Rui, GAO Pengxiang, et al. Design and experiment of single disc to top cutting device for carrot combine harvester [ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2020, 51(9) : 73 -81. (in Chinese)
С HEN Pinglu, XU Jing, ZHAI Yinmin, et al. Design and experimental study of vertical micro-cultivator for low trees in hilly orchard [J] . Machinery Design & Manufacture, 2021(2) : 299 -303. (in Chinese)
MARIEM A, CHRISTIAN F, TINO D, et al. Parameterising wheat leaf and tiller dynamics for faithful reconstruction of wheat plants by structural plant models [j]. Field Crops Research, 2018, 218 ; 213 -230.
Refbacks
- There are currently no refbacks.
