Design and experiment of a vegetable plug seedling planting mechanism combining non-circular gear system and multi-link

Authors

  • Lei Wang 1. Faculty of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China 2. Provincial Key Laboratory of Agricultural Intelligent Sensing and Robotics, Zhejiang Province, Hangzhou 310018, China
  • Zhiwen Lin 1. Faculty of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
  • Zhihan Zhou 1. Faculty of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
  • Gaohong Yu 1. Faculty of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China 2. Provincial Key Laboratory of Agricultural Intelligent Sensing and Robotics, Zhejiang Province, Hangzhou 310018, China
  • Zeyu Yang 1. Faculty of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
  • Xuefu Yu 3. Zhejiang Changshan Mingrui Electromechanical Co., Ltd, Quzhou 324200, China
  • Bingliang Ye 1. Faculty of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China 2. Provincial Key Laboratory of Agricultural Intelligent Sensing and Robotics, Zhejiang Province, Hangzhou 310018, China

DOI:

https://doi.org/10.25165/ijabe.v18i3.9229

Keywords:

vegetable plug seedling transplanter, seedling planting mechanism, solution region synthesis, planetary noncircular gear train, five-bar mechanism

Abstract

To meet the requirements of low damage and high seedling-standing of vegetable plug seedlings during mechanical transplanting, a new seedling planting mechanism combining non-circular gear system and multi-link was developed, which consisted of a five-bar seedling pushing mechanism with the planetary gear train of non-circular gears and a cam linkage seedling supporting mechanism. Based on the agronomic requirements for transplanting vegetable plug seedlings, the design requirements and the poses of four key points of the seedling pushing mechanism were determined. The mechanism solution region synthesis method was applied to conduct precise four poses synthesis of the five-bar seedling pushing mechanism. Based on four key pose points and five additional positions of the seedling pushing trajectory, the angular variation curve of the connecting rod relative to the planetary carrier was derived through cubic B-spline curve fitting. Subsequently, the kinematics analysis of the seedling pushing mechanism was performed to complete continuous motion discrimination and determine the parameters of the five-bar seedling pushing mechanism. The kinematics model of the planetary gear train with non-circular gears was established, and the pitch curve design for each gear was undertaken to fulfill the design of the seedling pushing mechanism. According to the motion law of the seedling pushing mechanism and the seedling planting requirements, the kinematics model of the seedling supporting mechanism was established and its parameters were solved. The virtual simulation analysis and prototype experiment of the mechanism confirm that the simulation and test motion trajectory and key poses are basically consistent with the theoretical design results. Moreover, when the rotation speeds of the seedling planting mechanism are 60-80 r/min, the success rates of broccoli and pepper seedling planting all reach over 93%, indicating the correctness of the seedling planting mechanism design and its application feasibility and universality. Keywords: vegetable plug seedling transplanter, seedling planting mechanism, solution region synthesis, planetary noncircular gear train, five-bar mechanism DOI: 10.25165/j.ijabe.20251803.9229 Citation: Wang L, Lin Z W, Zhou Z H, Yu G H, Yang Z Y, Yu X F, et al. Design and experiment of a vegetable plug seedling planting mechanism combining non-circular gear system and multi-link. Int J Agric & Biol Eng, 2025; 18(3): 124–134.

References

Zhang X Y, Bao J, Xu S W. Vegetable monitoring and early warning technology system innovative development for the future. Vegetables, 2023; 7（1）: 1-9. （in Chinese）.

Zhang J, Liu J F, Zhou X Y, Wu J Z, Shen C. Vegetable market analysis in 2022 and outlook for 2023. China Vegetables, 2023; 1（1）: 1-6.

Liao P, Meng Y, Chen Y Q, Weng W A, Chen L, Xing Z P, et al. Potted-seedling machine transplantation simultaneously promotes rice yield, grain quality, and lodging resistance in China: a meta-analysis. Agronomy, 2022; 12（12）: 3003.

Wen Y S, Zhang J X, Tian J Y, Duan D S, Zhang Y, Tan Y Z, et al. Design of a traction double-row fully automatic transplanter for vegetable plug seedlings. Computers and Electronics in Agriculture, 2021; 182（1）: 106017.

Zhou M L, Shan Y Y, Xue X L, Yin D Q. Theoretical analysis and development of a mechanism with punching device for transplanting potted vegetable seedlings. Int J Agric & Biol Eng, 2020; 13（4）: 85-92.

Jin X, Cheng Q, Zhao B, Ji J T, Li M Y. Design and test of 2ZYM-2 potted vegetable seedlings transplanting machine. Int J Agric & Biol Eng, 2020; 13（1）: 101-110.

Yan W, Hu M J, Li K, Wang J, Zhang W Y. Design and experiment of horizontal transplanter for sweet potato seedlings. Agriculture, 2022; 12（5）: 6775.

Ji J T, Cheng Q, Jin X, Zhang Z H, Xie X L, Li M Y. Design and test of 2ZLX-2 transplanting machine for oil peony. Int J Agric & Biol Eng, 2020; 13（4）: 61-69.

Sun L, Xu H C, Zhou Y Z, Shen J H, Yu G H, Hu H F, et al. Kinematic synthesis and simulation of a vegetable pot seedling transplanting mechanism with four exact task poses. Int J Agric & Biol Eng, 2023; 16（2）: 85-95.

Yu G H, Wang L, Sun L, Zhao X, Ye B L. Advancement of mechanized transplanting technology and equipments for field crops. Transactions of the CSAM, 2022; 53（9）: 1-20.

Wu G W, An X F, Yan B G, Li L W, He Y F. Design and experiment of automatic transplanter for sweet potato naked seedlings based on pretreatment seedling belt. Transactions of the CSAM, 2022; 53（S1）: 99-109.

Zhang J Q, Niu Z R, Li T H, Wu Y Q, Xi R, Li Y H, et al. Design and optimization of planting process parameters for 2ZYX-2 type green onion ditching and transplanting machine. Phyton, 2020; 89（1）: 147-166.

He Y F, Zhu Q Z, Fu W Q, Luo C H, Cong Y, et al. Design and experiment of a control system for sweet potato seedling-feeding and planting device based on a pre-treatment seedling belt Journal of Agricultural Engineering, 2022; 53（3）: 1261. Doi: 10.4081/jae.2022.1261.

Zhang Z, Igathinathane C, Flores P, Ampatzidis Y, Liu H, Mathew J, et al. Time effect after initial wheat lodging on plot lodging ratio detection using UAV imagery and deep learning. In: Zhang Z, Liu H, Yang C, et al. （eds）, Unmanned Aerial Systems in Precision Agriculture. Smart Agriculture, Vol 2, Springer, Singapore, 2022; pp.59-72. Doi: 10.1007/978-981-19-2027-1_4.

Javidan S M, Mohammadzamani D. Design, construction and evaluation of semi-automatic vegetable transplanter with conical distributor cup. SN Applied Sciences, 2019; 1（9）: 999.

Chen J N, Huang Q Z, Wang Y, Zhang G F. Kinematics modeling and analysis of transplanting mechanism with planetary elliptic gears for pot seedling transplanter. Transactions of the CSAE, 2012; 28（5）; 6-12. （in Chinese）

Yang W, Tang T, Yu G H, Du C C, Ye B L. Study on mechanism and test of low damage seedling grafting in pot of the ditch seedling planting mechanism. Journal of Chinese Agricultural Mechanization, 2023; 28（5）: 9-15.

Chen C, Bai S, Angeles J. A comprehensive solution of the classic Burmester problem. Transactions of the Canadian Society for Mechanical Engineering, 2008; 32（2）: 137-154.

Bourrelle J, Chen C, Caro S, Angeles J. Graphical user interface to solve the burmester problem. IFToMM World Congress, 2007; pp.1-8. Doi: 10.1201/b15883-9.

Bai S P. Dimensional synthesis of six-bar linkages with incomplete data set. New Trends in Mechanism and Machine Science, Springer International Publishing, 2014; pp.3-11. Doi: 10.1007/978-3-319-09411-3_1.

Wang J, Ting K L, Xue C. Discriminant method for the mobility identification of single degree-of-freedom double-loop linkages. Mechanism and Machine Theory, 2010; 45（5）: 740-755.

Nie L Y, Ding H F, Wang J, Bi S S. Branch graph method for crank judgement of complex multi-loop linkage. Journal of Beijing University of Aeronautics and Astronautics, 2022; 48（10）: 1863-1874.

Gálvez A, Iglesias A. Firefly algorithm for explicit B-spline curve fitting to data points. Mathematical Problems in Engineering, 2013; 2013（1）: 528215.

Dung V T, Tjahjowidodo T. A direct method to solve optimal knots of B-spline curves: An application for non-uniform B-spline curves fitting. PloS one, 2017; 12（3）: e0173857.

Ma J, Lu A E, Chen C, Ma X D, Ma Q C. Full rotatability and singularity of six-bar and geared five-bar linkages. Journal of Mechanisms & Robotics: Transactions of the ASME, 2010; 2（1）: 011011. Doi: 10.1115/1.4000517.

Liu D W, Ren Y T. Creating pitch curve of closed noncircular gear by compensation method. Journal of Mechanical Engineering, 2011; 47（13）: 147-152.

Wang L, Fang Z C, Wang Z T, Sun L, Yu G H, Cui R J. Mixed multi pose synthesis method and applications of unequal velocity planetary gear. China Mechanical Engineering, 2024; 35（12）: 2211-2220.

Ye J, Zhao X, Wang Y, Sun X C. A novel planar motion generaten method based on the synthesis of planetary gear train with noncircular gears. Journal of Mechanical Science and Technology, 2019; 33: 4939-4949.

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Published

2025-06-30

How to Cite

Wang, L., Lin, Z., Zhou, Z., Yu, G., Yang, Z., Yu, X., & Ye, B. (2025). Design and experiment of a vegetable plug seedling planting mechanism combining non-circular gear system and multi-link. International Journal of Agricultural and Biological Engineering, 18(3), 124–134. https://doi.org/10.25165/ijabe.v18i3.9229

Issue

Vol. 18 No. 3 (2025): IJABE

Section

Power and Machinery Systems

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