Reverse Design and Tests of Three-arms Rotary Rice Seedling Transplanting Mechanism
Abstract
In view of the existing problems of the three-arm rice transplanting mechanism, such as the insufficient angle of pushing seedlings, and the partial absolute movement trajectory forward after planting, a reverse design method based on the local motion trajectory was proposed to overcome this problem. Firstly, the relationship between the absolute motion trajectory and relative motion trajectory of the mechanism was analyzed, and combined the existing problems of the original mechanism to preset the return section trajectory of the local standard absolute motion trajectory, the picking-seeding angle to reverse the local relative motion trajectory and key position points of the transplanting mechanism. The non-uniform B-spline curve was used to fit the trajectory. Secondly, a reverse design model for transplanting mechanism was established. A Matlab-based reverse analysis design software for seedling transplanting mechanism was developed to solve the parameters that met the design requirements of the mechanism. At last, the structure of three-arms rotary rice seedling transplanting mechanism was designed, and a physical prototype of the mechanism was manufactured. A virtual kinematic simulation and high-speed photographic kinematics bench test of the seedling transplanting mechanism were carried out to study the motion characteristics of the physical prototype of the mechanism. The results showed that the simulation trajectory, test trajectory and theoretical trajectory were basically the same, and the pushing-seedling angle was increased by more than 9.08°, the return height of the moving trajectory greater than 120mm, the difference between the taking-seedlings and pushing-seedlings’ angle difference and the seedling box’s installation angle was within ±2°, which met the design requirements. The correctness of the design method and design results of the mechanism were verified.
Keywords: rice potted-seedling, transplanting mechanism, three-arms rotary, trajectory reversesolution, parameter optimization
Download Full Text:
PDFReferences
XU Tong. Design and simulation of the rice seedling transplanting mechanism[D]. Yanji: Yanbian University, 2015. (in Chinese)
ZHENG Xin. Design and simulation study of rotation taking and placing rice potted-seedling mechanism[D]. Yanji: Yanbian University, 2015. (in Chinese)
FELEZI M E,VAHABI S, NARIMAN Z N. Pareto optimal design of reconfigurable rice seeding transplanting mechanisms using multi-objective genetic algorithm[J]. Neural Comput. & Applic., 2016, 27(7): 1907–1916.
ZUO Yanjun, CAO Peng, ZHAO Yun, et al. Design and optimization of transplanting mechanism with B-spline non-circular planet gear train for rice pot seedling[J]. Transactions of the CSAE, 2014, 30(15): 10–17. (in Chinese)
SUN Liang, MAO Shimin, ZHAO Yun, et al. Kinematic analysis of rotary transplanting mechanism for wide-narrow row pot seedlings[J]. Transactions of the ASABE, 2016, 59(2): 475–485.
ZHOU Maile,SUN Liang, DU Xiaoqiang, et al. Optimal design and experiment of rice pot seedling transplanting mechanism with planetary bezier gears[J]. Transactions of the ASABE, 2014, 57(6): 1537–1548.
YU Gaohong, HUANG Xiaoyan, YE Bingliang. Principle analysis and parameters optimization of rotary rice pot seedling transplanting mechanism[J]. Transactions of the CSAE, 2013, 29(3): 16–22. (in Chinese)
YE Bingliang, WU Guohuan, YU Gaohong, et al. Optimized design and tests on rice potted seedling transplanting mechanism of planetary gear train with non-circular gears[J]. Transactions of the Chinese Society for Agricultural Machinery, 2017,47(11): 68–73. (in Chinese)
YE Bingliang, YI Weiming, YU Gaohong, et al. Optimization design and test of rice plug seedling transplanting mechanism of planetary gear train with incomplete eccentric circular gear and non-circular gears[J]. Int. J. Agric. Biol. Eng., 2017, 10(6): 43–55.
YE Bingliang, JIN Xuejun, YU Gaohong, et al. Parameter modification guiding optimization design and tests of a rotary transplanting mechanism for rice plug seedlings[J]. Applied Engineeringin Agriculture, 2015, 31(6): 863–873.
YU Gaohong, JIN Ye, CHAN G Shushu, et al. Design and test of clipping-plug type transplanting mechanism of rice plug-seedling[J]. Transactions of the Chinese Society for Agricultural Machinery, 2019, 50(7): 100–108. (in Chinese)
WU Guohuan, YU Gaohong, XIANG Xiaojie, et al. Design and test of rice potted-seedling transplanting mechanism with three transplanting arms[J]. Transactions of the CSAE, 2017, 33(15): 15–22. (in Chinese)
CHEN Jianneng, HUANG Qianze, WANG Ying, et al. Parametric analysis and inversion of transplanting mechanism with planetary non-circular gears for potted-seedling transplanter[J]. Transactions of the CSAE, 2013, 29(8): 18 –26. (in Chinese)
ZHAO Xiong, WANG Chuan, YANG Maoxiang, et al. Reverse design and analysis of automatic seedling pick-up mechanism with non-circular gear planetary train[J]. Transactions of the CSAE, 2015, 31(16): 30–36. (in Chinese)
LI Ge,YING Kongyue, ZHANG Jizhao, et al. Computation method of non-circular gear based on seedling needle tip point’s static trajectory in transplanting mechanism[J]. Journal of Mechanical Engineering, 2016, 52(1): 64–71. (in Chinese)
ZHAO X, CHU M, MA X, et al. Research on design method of non-circular planetary gear train transplanting mechanism based on precise poses and trajectory optimization[J]. Advancesin MechanicalEngineering, 2018, 10(12): 1–12. (in Chinese)
LIU Cailing, WEI Dan, SONG Jiannong, et al. Systematic study on boundary parameters of discrete element simulation of granular fertilizer[J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(9): 82–89. (in Chinese)
YUAN Quanchun, XU Liming, XING Jiejie, et al. Parameter calibration of discrete element model of organic fertilizer particles for mechanical fertilization[J]. Transactions of the CSAE, 2018, 34(18): 21–27. (in Chinese)
YU Qingxu, LIU Yan, CHEN Xiaobing, et al. Calibration and experiment of simulation parameters for Panax notoginseng seeds based on DEM[J]. Transactions of the Chinese Society for Agricultural Machinery, 2020, 51(2): 123 –132. (in Chinese)
HAN Shujie, QI Jiangtao, KAN Za, et al. Parameters calibration of discrete element for deep application of bulk manure in Xinjiang orchard[J]. Transactions of the Chinese Society for Agricultural Machinery, 2021, 52(4): 101–108. (in Chinese)
ZHANG Rongfang, JIAO Wei, ZHOU Jilei, et al. Parameter calibration and experiment of rice seeds discrete element model with different filling particle radius[J]. Transactions of the Chinese Society for Agricultural Machinery, 2020, 51(Supp.1): 227–235. (in Chinese)
LUO Shuai, YUAN Qiaoxia, GOUDA Shaban, et al. Parameters calibration of vermicomposting nursery substrate with discrete element method based on JKR contact model[J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(4): 343–350. (in Chinese)
PENG Fei, WANG Hongying, FANG Fang, et al. Calibration of discrete element model parameters for pellet feed based on injected section method[J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(4): 140–147. (in Chinese)
LIU Wenzheng, HE Jin, LI Hongwen, et al. Calibration of simulation parameters for potato minituber based on EDEM[J]. Transactions of the Chinese Society for Agricultural Machinery, 2018, 49(5): 125–135. (in Chinese)
YE J, ZHAO X, WANG Y, et al. A novel planar motion generation method based on the synthesis of planetary gear train with non-circular gears[J]. Journal of Mechanical Science and Technology, 2019, 33(2): 4939–4949.
SUN Liang, HU Yixiang, XING Ziqin, et al. Motion synthesis of rotary pot seedling transplanting mechanism based on approximate multi-pose[J]. Transactions of the Chinese Society for Agricultural Machinery, 2020, 51(12): 103–111. (in Chinese)
WU Guohuan, YU Gaohong, YE Bingliang, et al. Forward-reverse design method for rice potted-seedling transplanting mechanism with compound planetary gear train[J]. Transactions of the Chinese Society for Agricultural Machinery, 2020, 51(2): 85–93,102. (in Chinese)
HUA Yao. Research of planetary gear train seedling pic-up mechanism based on two-unequal-amplitude transmission ratio[D]. Hangzhou: Zhejiang Sci-Tech University, 2019. (in Chinese)
MUNDO D. Geometric design of a planetary gear train with non-circular gears[J]. Mechanism and Machine Theory, 2006, 41(4): 456–472.
TAN Weiming, LIANG Yanfei, AN Jun, et al. Mathematical model for tooth profile of non-circular in volute gears[J]. Chinese Journal of Mechanical Engineering, 2005, 38(5):75–79. (in Chinese)
LIU Dawei, REN Tingzhi. Creating pitch curve of closed non-circular gear by compensation method[J]. Journal of Mechanical Engineering, 2011,47(13):147–152. (in Chinese)
CHEN Zaigang, SHAO Yimin. Mesh stiffness of a internal spur gear pair with ring gear rim deformation[J]. Mechanism and MachineTheory, 2013,69: 1–12.
Refbacks
- There are currently no refbacks.
