Motion Analysis for Vegetable Potted Seedling Pick-Up Mechanism with Double Crank Geared Linkages

Abstract:

The semi-automatic feeding mechanism of vegetable transplanter was nacelle basket type which is available with manual feeding for transplanting vegetable potted seedlings. However, the efficiency is lower to meet the needs. To improve it, a new design of the potted seedling pick-up mechanism with double crank geared five-bar linkages model was expounded for automatic seedling picking. The kinematics model of the pick-up mechanism was established by mathematical analysis method. The influence of the structural parameters on the motion trajectory and relative velocity of the seedling pick-up arm cusp was investigated. The design of optimization objective for picking vegetable potted seedling was proposed. Meanwhile, the optimal parameter combination of the pick-up mechanism was obtained by using MATLAB based on the objective. With it, when the seedlings pot were being pulled out, the path of the seedling pick-up arm inserting was straightly and more perpendicular to potted seedling. Furthermore, the velocity of seedling taking and dropping cusps were relatively lower in order to meet the speeds demand of seedling picking up with seedling feeding in automatic way.

• Periodical: Applied Mechanics and Materials (Volume 529)
• Pages: 218-223
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.529.218
• Online since: June 2014
• Authors: Chuan Hua Yang, Xian Fa Fang, Xin Jin, Zhong Jun Liu, Jun Liu, Yu Hui Guo
• Keywords: Geared Linkage Mechanism, Kinematics, Parameter Optimization, Seedling Pick-Up Mechanism, Vegetable Potted-Seedling Transplanter

References

[1] C. J. Han, W. Z. Yang, and X. J. Zhang: Dedign and test of automatic feed system for tray seedlings transplanter. Transactions of the Chinese Society of Agricultural Engineering, Vol. 29 (2013), pp.51-61.

[2] Y. Z. Gao, J. L. Wang, and C. H. Li. Analysis of problems and measures for dryland seedling transplanting mechanization in China. Journal of Shenyang Agricultural University, Vol. 35 (2004), pp.145-147.

[3] J. L. Wang, Y. Z. Gao, and C. H. Li. Status and development trend of transplanting mechanization for dry land production. Chinese Agricultural Mechanization, Vol. 6 (2003): pp.12-14.

[4] J. Feng, G. Qin, and W. T. Song. The Kinematic analysis and design criteria of the dibble-type transplanters. Transactions of the Chinese Society for Agricultural Machinery, Vol. 33 (2002): pp.48-50.

[5] L. He, J. Q. Xu, and N. Zhou. Kinematics Analysis of Transplanting Mechanism with Non-circular Planetary Gears. Transactions of the Chinese Society for Agricultural Machinery, Vol. 38 (2007): pp.74-77.

[6] G. H. Yu, B. H. Liu, and Y. Zhao. Kinematic Principle Analysis of Transplanting Mechanism with Planetary Elliptic Gears in Automatic Vegetable Transplanter. Transactions of the Chinese Society for Agricultural Machinery, Vol. 42 (2011): pp.53-57.

[7] G. H. Yu, Z. W. Chen, and Y. Zhao. Study on Vegetable Plug Seedling Pick-up Mechanism of Planetary Gear Train with Ellipse Gears and Incomplete Non-circular Gear. Journal of Mechanical Engineering, Vol. 48 (2012): pp.32-39.

DOI: 10.3901/jme.2012.13.032

[8] B. L. Ye, G. H. Yu, and Z. W. Chen. Kinematics modling and parameters optimization of seedling pick-up mechinasim of planetary gear with eccentric gear and non-cicular gear. Transactions of the Chinese Society of Agricultural Engineering, Vol. 27 (2011).

[9] S. L. Zhou, H. J. Zou, and Y. N. Yao. Analysis od Types of Hybrid Input Five-Bar Mechanism. Journal of Shanghai Jiaotong University, Vol. 35 (2001): pp.1045-1048.