Chinese Journal of Mechanical Engineering >

2020 , Vol. 33 >Issue 4: 63 - 63

DOI: https://doi.org/10.1186/s10033-020-00484-w

Mechanism and Robotics

Design of Vegetable Pot Seedling Pick-up Mechanism with Planetary Gear Train

  • Tong Zhipeng ,
  • Yu Gaohong ,
  • Zhao Xiong ,
  • Liu Pengfei ,
  • Ye Bingliang
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  • 1. Zhejiang Province Key Laboratory of Transplanting Equipment and Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China;
    2. Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou 310018, China

Received date: 2019-12-23

  Revised date: 2020-08-02

  Online published: 2020-11-06

Supported by

Supported by National Key Research and Development Program of China (Grant No. 2017YFD0700800), National Science Foundation of China (Grant Nos. 51775512, 51575496), and Zhejiang Provincial Natural Science Foundation of China (Grant No. LZ16E050003)

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Abstract

It has been challenging to design seedling pick-up mechanism based on given key points and trajectories, because it involves dimensional synthesis and rod length optimization. In this paper, the dimensional synthesis of seedling pick-up mechanism with planetary gear train was studied based on the data of given key points and the trajectory of the endpoint of seedling pick-up mechanism. Given the positions and orientations requirements of the five key points, the study first conducted a dimensional synthesis of the linkage size and center of rotation. The next steps were to select a reasonable solution and optimize the data values based on the ideal seedling trajectory. The link motion was driven by the planetary gear train of the two-stage gear. Four pitch curves of noncircular gears were obtained by calculating and distributing the transmission ratio according to the data. For the pitch curve with two convex points, the tooth profile design method of incomplete noncircular gear was applied. The seedling pick-up mechanism was tested by a virtual prototype and a physical prototype designed with the obtained parameter values. The results were consistent with the theoretical design requirements, confirming that the mechanism meets the expected requirements for picking seedlings up. This paper presents a new design method of vegetable pot seedling pick-up mechanism for an automatic vegetable transplanter.

Key words： Combined incomplete noncircular gear; Mechanism dimension synthesis; Planetary gear train; Seedling pick-up mechanism

Cite this article

Tong Zhipeng , Yu Gaohong , Zhao Xiong , Liu Pengfei , Ye Bingliang . Design of Vegetable Pot Seedling Pick-up Mechanism with Planetary Gear Train[J]. Chinese Journal of Mechanical Engineering, 2020 , 33(4) : 63 -63 . DOI: 10.1186/s10033-020-00484-w

References

[1] R Tao, X L Cheng, F Q Gao. Analysis on the development and status of dry land transplanting mechanization at home and abroad. Agricultural Science & Technology and Equipment, 2016, 3: 40-42. https://doi.org/10.16313/j.cnki.nykjyzb.2016.03.016
[2] Q X Liao, Z Zhang, Q L Hu, et al. Design and trajectory analysis of pneumatic picking-up mechanism for rape paper pot seedling. Transactions of the Chinese Society for Agricultural Machinery, 2017, 48(11): 70-78. (in Chinese)
[3] L H Han, H P Mao, F Kumi, et al. Development of a multi-task robotic transplanting workcell for greenhouse seedlings. Applied Engineering in Agriculture, 2018, 34(2): 335-342. https://doi.org/10.13031/aea.12462.
[4] L Xin, Z J Lv, W Q Wang, et al. Optimal design and development of a double-crank potted rice seedling transplanting mechanism. Transactions of the ASABE, 2017, 60(1): 31-40. https://doi.org/10.13031/trans.11680.
[5] X Jin, D Li, H Ma, et al. Development of single row automatic transplanting device for potted vegetable seedlings. International Journal of Agricultural and Biological Engineering, 2018, 11(3): 67-75. https://doi.org/10.25165/j.ijabe.20181103.3969.
[6] M Z Iqbal. Design of a gear driven hopper type dibbling mechanism for a 2.7 kW two-row pepper transplanter. Daejeon: Chungnam National University, 2019. https://doi.org/10.13140/rg.2.2.31847.80807.
[7] E C Armstrong, W A Hanacek, T A Spinetti. Automatic soil plug loader and feeder. US, 4443151, 1984.
[8] K Tsuga. Development of fully automatic vegetable transplanter. Japan Agricultural Research Quarterly, 2000, 34(1): 21-28.
[9] Q Z Yang, X Li, X Y Shi, 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. https://doi.org/10.1016/j.compag.2018.02.004.
[10] Q Z Yang, G L Huang, X Y Shi, et al. Design of a control system for a mini-automatic transplanting machine of plug seedling. Computers and Electronics in Agriculture, 2020, 169: 105226. https://doi.org/10.1016/j.compag.2020.105226.
[11] Q Z Yang, L Xu, X Y Shi, et al. Design of seedlings separation device with reciprocating movement seedling cups and its controlling system of the full-automatic plug seedling transplanter. Computers & Electronics in Agriculture, 2018, 147: 131-145. https://doi.org/10.1016/j.compag.2018.02.004.
[12] G H Yu, B H Liu, Y Zhao, et al. Kinematic principle analysis of transplanting mechanism with planetary elliptic gears in automatic vegetable transplanter. Transactions of the Chinese Society for Agricultural Machinery, 2011, 42(4): 53-57. https://doi.org/10.1007/s11460-011-0118-2. (in Chinese)
[13] G H Yu, Z W Chen, Y Zhao, et al. Study on vegetable plug seedling pick-up mechanism of planetary gear train with ellipse gears and incomplete non-circular gear. Journal of Mechanical Engineering, 2012, 48(13): 32-39. https://doi.org/10.3901/jme.2012.13.032. (in Chinese)
[14] G H Yu, J P Yu, J H Tong, et al. Design of a conjugate concave-convex non-circular gear mechanism. China Mechanical Engineering, 2016, 27(16): 2155-2159+2165. https://doi.org/10.3969/j.issn.1004-132x.2016.16.005. (in Chinese)
[15] B L Ye, G H Yu, Z W Chen, et al. Kinematics modeling and parameters optimization of seedling pick-up mechanism of planetary gear train with eccentric gear and non-circular gear. Transactions of the Chinese Society for Agricultural Machinery, 2011, 27(12): 7-12. https://doi.org/10.3969/j.issn.1002-6819.2011.12.002. (in Chinese)
[16] X Zhao, M Shen, J N Chen, et al. Kinematic analysis and virtual experiment of rotary pick-up mechanism on cotton transplanter. Transactions of the Chinese Society for Agricultural Machinery, 2014, 30(8): 13-20. https://doi.org/10.3969/j.issn.1002-6819.2014.08.002. (in Chinese)
[17] B L Ye, X J Jin, G H Yu, et al. 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. https://doi.org/10.13031/aea.31.11198.
[18] X Zhao, J N Chen, Y Wang, et al. Reverse design and analysis of rice seedling transplanter with D-shape static trajectory. Transactions of the Chinese Society for Agricultural Machinery, 2012, 28(8): 92-97. https://doi.org/10.3969/j.issn.1002-6819.2012.08.014. (in Chinese)
[19] H Lipkin. A note on Denavit-Hartenberg notation in robotics. In: ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Long Beach, California, USA, September 24-28, 2005: 921-926. https://doi.org/10.1115/detc2005-85460.
[20] J Y Han, W X Qian. On the solution of region-based planar four-bar motion generation. Mechanism and Machine Theory, 2009, 44(2): 457-465. https://doi.org/10.1016/j.mechmachtheory.2008.03.005.
[21] J Y Han, T Yang. A novel synthesis method for three-position motion generation with planar four-bar mechanisms. In: ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Chicago, Illinois, USA, August 12, 2012: 419-426. https://doi.org/10.1115/detc2012-70162.
[22] W X Qian, J Y Han. Solution region analysis and robust penalty method of 4-position rigid-body guidance. Machine Design & Research, 2008, 24(5): 17-21. https://doi.org/10.13952/j.cnki.jofmdr.2008.06.007.
[23] E C Kinzel, J P Schmiedeler, G R Pennock. Kinematic synthesis for finitely separated positions using geometric constraint programming. Journal of Mechanical Design, 2006, 128(5): 1070-1079. https://doi.org/10.1115/1.2216735.
[24] T Yang, J Y Han, L R Ying. A unified synthesis method based on solution regions for four finitely separated and mixed "point-order" positions. Mechanism and Machine Theory, 2011, 46(11): 1719-1731. https://doi.org/10.1016/j.mechmachtheory.2011.06.008.
[25] C H Chiang, J S Chen. An algebraic treatment of Burmester points by means of three basic poles. Mechanism and Machine Theory, 1987, 22(1): 47-53. https://doi.org/10.1016/0094-114x(87)90075-9.
[26] D Mundo. Geometric design of a planetary gear train with non-circular gears. Mechanism and Machine Theory, 2006, 41(4): 456-472. https://doi.org/10.1016/j.mechmachtheory.2005.06.003.
[27] F L Litvin, I Gonzalez-Perez, A Fuentes, et al. Design and investigation of gear drives with non-circular gears applied for speed variation and generation of functions. Computer Methods in Applied Mechanics and Engineering, 2008, 197(45-48): 3783-3802. https://doi.org/10.1016/j.cma.2008.03.001.
[28] X Lian, Y Y Liu, D Z Li, et al. A linkage model and applications of hobbing non-circular helical gears with axial shift of hob. Mechanism and Machine Theory, 2013, 70: 32-44. https://doi.org/10.1016/j.mechmachtheory.2013.07.002.
[29] F Y Zheng, L Hua, X H Han, et al. Linkage model and manufacturing process of shaping non-circular gears. Mechanism and Machine Theory, 2016, 96: 192-212. https://doi.org/10.1016/j.mechmachtheory.2015.09.010.
[30] G H Yu, Z P Tong, L Sun, et al. Novel gear transmission mechanism with twice unequal amplitude transmission ratio. Journal of Mechanical Design, 2019, 141(9): 092304. https://doi.org/10.1115/1.4043019.
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