Design and experimental research on the sweet potato seedling transplanting mechanism of the planetary gear train with deformed elliptical gear transmission

Bingliang Ye, Yuxuan Ye, Haili Zhou, Gaohong Yu, Xiong Zhao, Bin Deng

Abstract


Aiming at the lack of suitable machines for sweet potato seedling transplanting in China, and according to the agronomic requirements for the horizontal insertion method of sweet potato seedling, a new sweet potato seedling transplanting mechanism of planetary gear train was proposed based on the non-uniform transmission of deformed elliptical gear. The working principle of the transplanting mechanism was analyzed, and the kinematics modeling and analysis of the mechanism were carried out. The study established the numerical objectives of the transplanting mechanism and applied the theory of membership function to establish a mathematical model for the parameter-guided optimization design of the transplanting mechanism. The parameter-guided optimization design software was developed to obtain a set of optimal mechanism parameters that satisfied the motion trajectory of sweet potato transplanting and the posture of the transplanting arm. Based on the optimized parameters, the structure of the transplanting mechanism was designed, and a virtual prototype of the mechanism was created, whereby a virtual motion simulation of the transplanting mechanism was conducted to verify the correctness of the kinematics model and design of the mechanism. The high-speed photographic kinematics test of the mechanism prototype and sweet potato seedling transplanting tests were conducted to test the mechanism’s kinematic characteristics and transplanting performance. The test results show that the test trajectory of the mechanism and test posture of the transplanting arm are almost consistent with the theoretical and simulation trajectory, meeting the agronomic requirements of the horizontal insertion method of sweet potato seedling; And when the rotary speed of the mechanism are 20 r/min and 30 r/min, the average success ratios of sweet potato seedlings transplanting are 90% and 82%, respectively, which prove the application feasibility of the mechanism in the practical machines.
Keywords: sweet potato seedling transplanter, transplanting mechanism, deformed elliptical gear transmission, kinematics analysis, membership function, optimization design
DOI: 10.25165/j.ijabe.20241703.8543

Citation: Ye B L, Ye Y X, Zhou H L, Yu G H, Zhao X, Deng B. Design and experimental research on the sweet potato seedling transplanting mechanism of the planetary gear train with deformed elliptical gear transmission. Int J Agric & Biol Eng, 2024; 17(3): 91-99.

Keywords


sweet potato seedling transplanter, transplanting mechanism, deformed elliptical gear transmission, kinematics analysis, membership function, optimization design

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References


Oladejo A O, Ma H L, Qu W J, Zhou C S, Wu B G, Yang X. Influence of ultrasound pretreatments on diffusion coefficients, texture and colour of osmodehyd rated sweet potato （Ipomea batatas）. International Journal of Food Science & Technology, 2017; 52（4）: 888–896.

Wijewardana C, Reddy K R, Shankle M W, Meyers S, Gao W. Low and high-temperature effects on sweet potato storage root initiation and early transplant establishment. Scientia Horticulturae, 2018; 240: 38–48.

Li H, He T F, Liu H, Shi S, Wang B Q, Zhou J L, et al. Efficacy of sweet potato transplanting machine for different cultivation systems in Northern China. Agriculture, 2022; 12（8）: 1184.

Shao Y Y, Xuan G T, Hou J L, Hu Z C, Wang Y X, Liu Y. Design and simulation of sweet potato mulched transplanting mechanism with “boat”-shape. 2018 ASABE Annual International Meeting, Detroit: ASABE, 2018; Paper No. 1801104.

Bao G C, Wang G P, Hu L L, Yang W, Shen H Y, Xu X W, et al. Design and optimization of the height self-adjusting device for sweet potato combined harvesters. Transactions of the CSAE, 2023; 39（2）: 24–33. （in Chinese）

Yan W, Hu M, Li K, Wang J, Zhang W. Design and Experiment of Horizontal Transplanter for Sweet Potato Seedlings. Agriculture, 2022; 12（5）: 675.

Yang Q Z, Xu L, Shi X Y, Ibrar A, Mao H P, Hu J P, et al. Design of seedlings separation device with reciprocating movement seedling cups and its controlling system of the full-automatic plug seedling transplanter. Computers and Electronics in Agriculture, 2018; 147: 131–145.

Yan W, Zhang W Y, Hu M J, Ji Y, Li K, Qi B. Present situation of research and expectation on plant mechanization of sweet potato in China and abroad. Journal of Chinese Agricultural Mechanization, 2018; 39（2）: 12–16. （in Chinese）

Fujimura H. Japanese agricultural machinery situation and the role of institute of agricultural machinery. AMA - Agricultural Mechanization in Asia, Africa and Latin America, 2017; 48（2）: 88–91.

Liu Z D, Lyu Z Q, Zheng W X, Wang X. Trajectory control of two-degree-of-freedom sweet potato transplanting robot arm. IEEE Access, 2022; 10: 26294–26306.

Zhu B B, Lv Z Q. Design of transplanting machine for nude seedling with belt. Journal of Agricultural Mechanization Research, 2018; 40（6）: 120–123, 161. （in Chinese）

Deng B. Design and experiment of transplanting mechanism of modified elliptical gear planetary gear system for sweet potato seedlings. MS dissertation. Hangzhou: Zhejiang Sci-Tech University, 2022; 71p. （in Chinese）

Wu G W, An X F, Yan B X, Li L W, He Y F, Meng Z J. Design and experience of automatic transformer for sweet potato naked seedlings based on pretreatment seedling belt. Transactions of the CSAM, 2022; 53（S1）: 99–109. （in Chinese）

Wu G W, Wang S J, Zhang A Q, Xiao Y J, Li L W, Yin Y X, et al. Optimized design and experiment of a self-covering furrow opener for an automatic sweet potato seedling transplanting machine. Sustainability, 2023; 15（17）: 13091.

Hu L L, Wang G P, Ling X Y, Wang B, Wang B K, You Z Y. Mechanical properties of sweet potato vine and stalk during harvest. Transactions of the CSAE, 2015; 31（9）: 45–49. （in Chinese）

Ao M, Yu G H, Wang L, Sun L, Zhao J. Optimization synthesis of hybrid six-bar mechanism with non-circular gear constraints. Journal of Mechanical Design, 2023; 145（6）: 064502.

Tong Z P, Yu G H, Zhao X, Liu P F, Ye B L. Design of vegetable pot seedling pick-up mechanism with planetary gear train. Chinese Journal of Mechanical Engineering, 2020; 33（4）: 95–105.

Liu J G, Tong Z P, Yu G H, Zhao X, Zhou H L. Design of a noncircular gear mechanism with twice unequal amplitude transmission ratio. Journal of Mechanisms and Robotics, 2022; 14（5）: 054501.

Ye B L, Zeng G J, Deng B, Yang C L, Liu J K, Yu G H. Design and tests of a rotary plug seedling pick-up mechanism for vegetable automatic transplanter. Int J Agric & Biol Eng, 2020; 13（3）: 70–78.

Yin J J, Wang Z L, Zhou M L, Wu L N, Zhang Y. Optimized design and experiment of the three-arm transplanting mechanism for rice potted seedlings. Int J Agric & Biol Eng, 2021; 14（5）: 56–62.

Yu Y X, Liu J K, Ye B L, Yu G H, Jin X J, Sun L, et al. Design and experimental research on seedling pick-up mechanism of planetary gear train with combined non-circular gear transmission. Chinese Journal of Mechanical Engineering, 2019; 32（1）: 1–13.

Wang L, Sun L, Huang H M, Yu Y X, Yu G H. Design of clamping-pot-type planetary gear train transplanting mechanism for rice wide–narrow-row planting. Int J Agric & Biol Eng, 2021; 14（2）: 62–71.

Zhao X, Ye J, Chu M Y, Dai L, Chen J N. Automatic scallion seedling feeding mechanism with an asymmetrical high-order transmission gear train. Chinese Journal of Mechanical Engineering, 2020; 33（1）: 148–161.

Chen J N, Zhang P H, Wang Y, Xia X D, Jiang C Q. Multi-objective parameter optimization and experiment of rotary seedling planting mechanism. Transactions of the CSAM, 2015; 46（5）: 46–53. （in Chinese）

Ye B L, Jin X J, Yu G H, Li L, Gao Y, Hao Z. Parameter modification guiding optimization design and tests of a rotary transplanting mechanism for rice plug seedlings. Applied Engineering in Agriculture, 2015; 31（6）: 863–873.

Yu C N, Ye J, Jia J M, Zhao X, Chen Z W, Chen J N. Design, synthesis, and experiment of foot-driven lower limb rehabilitation mechanisms. Journal of Mechanisms and Robotics, 2021; 14（2）: 021001.

Zhu Z F, Wu G H, Ye B L, Zhang Y C. Reverse design and tests of vegetable plug seedling pick-up mechanism of planetary gear train with non-circular gears. Int J Agric & Biol Eng, 2023; 16（2）: 96–102.




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