A whole row automatic pick-up device using air force to blow out vegetable plug seedlings
Abstract
Aim of study: To develop a whole row automatic pick-up device using air force to blow out plug seedlings, to avoid the damage to seedlings that the current way of seedling picking by needle insertion induces.
Area of study: Jiangsu Province, China.
Material and methods: We designed a pick-up device which mainly consists of a seedling transporting device, a seedling air loosening device, a seedling clamping device and an automatic control system. The damage rate of seedling was significantly reduced and the success rate of seedling picking was increased by using the new seedling air loosening method and the new designed end-effectors. A prototype of the new pick-up device was produced according to the calculation results, and the performance tests were arranged under actual production conditions in an indoor laboratory.
Main results: The calculation showed that when the diameter of the blowhole in air nozzle is 3.5 mm, and the air pressure is between 0.146 MPa and 0.315 MPa, the seedlings can be blown out successfully. Besides, the clamping strain test showed that the new designed end-effector can meet the requirements of seedling picking. The orthogonal test showed that both the air pressure and water content significantly affected the success ratio. The success ratio reached 96.64% when air pressure was 0.4 MPa, water content was 55%-60% and airflow rate was 100%, what meets the current requirements of transplanting.
Research highlights: This research can provide some references for the automatic transplanting technology.
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References
Chen J, Wu J, Ye J, Fu X, Fang X, 2014. Dynamic modeling and analysis of seven-bar seedling planting mechanism of transplanting machine. Appl Mech Mat 574: 230-238. https://doi.org/10.4028/www.scientific.net/AMM.574.230
Ferrari, 2018. Ferrari Futura automated transplanter [EB/OL]. https://ferraricostruzioni.com/en/tray-planters/8-futura-automated-transplanter.html
Gao G, Wang K, Sun X, 2017. Verification for EDEM simulation of process of jacking tray-seedling by steel needle in grafting machine and parameter optimization. T CSAE 33 (21): 29-35.
Han FQ, Xiao YX, Kubota T, Liu J, 2004. Study on the contraction mechanism of free jet. J Eng Thermophys 25 (3): 421-423.
Han L, Mao H, Miao X, Hu J, Yang X, 2013. Design of automatic picking up seedling end-effector based on mechanical properties of plug seedlings. T CSAM 44 (11): 260-265.
Han L, Mao H, Yan L, Hu J, Huang W, Dong L, 2015. Pincette-type end-effector using two fingers and four pins for picking up seedlings. T CSAM 46 (7): 23-30.
Han L, Mao H, Zhao H, Liu Y, Hu J, Ma G, 2019a. Design of root lump loosening mechanism using air jets to eject vegetable plug seedlings. T CSAE 35 (4): 37-45.
Han L, Kumi F, Mao H, Hu J, 2019b. Design and tests of a multi-pin flexible seedling pick-up gripper for automatic transplanting. Appl Eng in Agr 35 (6): 949-957. https://doi.org/10.13031/aea.13426
Jin X, Li D, Ma H, Ji J, Zhao K, Pang J, 2018. Development of single row automatic transplanting device for potted vegetable seedlings. Int J Agr Biol Eng 11 (3): 67-75. https://doi.org/10.25165/j.ijabe.20181103.3969
Khadatkar A, Mathur SM, Gaikwad BB, 2018. Automation in transplanting: a smart way of vegetable cultivation. Curr Sci 115 (10): 1884-1892. https://doi.org/10.18520/cs/v115/i10/1884-1892
Kumar GVP, Raheman H, 2011. Development of a walk-behind type hand tractor powered vegetable transplanter for paper pot seedlings. Biosyst Eng 110 (2): 189-197. https://doi.org/10.1016/j.biosystemseng.2011.08.001
Liu Y, Mao H, Han L, Xu J, Ma G, 2018. Plug damage detection and parameter optimization of picking up cucumber seedlings from tray cells based on Micro-CT. T CSAE 34 (12): 27-34.
Ma G, Mao H, Bu Q, Han L, Abdul S, Gao F, 2020a. Effect of compound biochar substrate on the root growth of cucumber plug seedlings. Agronomy 10 (8): 1080. https://doi.org/10.3390/agronomy10081080
Ma G, Mao H, Han L, Liu Y, Gao F, 2020b. Reciprocating mechanism for whole row automatic seedling picking and dropping on a transplanter. Appl Eng Agr 36 (5): 751-766. https://doi.org/10.13031/aea.13622
Miao X, Mao H, Han L, Sun H, Yang X, 2013. Analysis of influencing factors on force of picking plug seedlings and pressure resistance of plug seedlings. T CSAM 44 (1): 27-32.
National Bureau of Statistics of China, 2019. http://data.stats.gov.cn/easyquery.htm?cn=C01
Ren Z, Wang W, Feng J, Yu J, 2020. Experimental study on mechanical properties of plug seedlings. J Chin Agr Mechan 41 (04):169-174.
Ryu KH, Kim G, Han JS, 2001. Development of a robotic transplanter for bedding plants. Agr Eng Res 78 (2): 141-146. https://doi.org/10.1006/jaer.2000.0656
Thomas EV, Kumar U, 2017. Kinematic analysis of transplanting mechanisms of selected mechanical rice transplanters. J Agr Eng 54 (3): 1-11.
Ting KC, Giacomelli GA, Shen SJ, 1990. Robot workcell for transplanting of seedlings: part Ⅱ- end-effector development. T ASAE 33 (3): 1013-1017. https://doi.org/10.13031/2013.31431
Tong J, Shi H, Wu C, Ding Y, Zhao X, Wang R, 2019. Simulation and test of seedling pot grabbing by spade end-effector. T CSAM 50 (8): 107-116.
Wang D, Jin X, Ji J, He Z, Yan H, 2016. Design and experiment of fully automatic ejection and picking-up seedlings mechanism of transplanter. J Agr Mechan Res 10 (10): 64-69.
Wang Z, Hu X, 2020. Research on deflection measurement of helicopter blade based on strain gauge method. Chin Meas Test 46 (4): 42-46.
Xiang W, Luo X, Wang Y, 2007. Experiments on pneumatic ordered throwing transplantation of paddy seedling. T CSAM 38 (7): 67-70.
Yang Y, Ting KC, Giacomelli GA, 1991. Factors affecting performance of sliding-needles gripper during robotic transplanting of seedlings. T ASAE 7 (4): 493-498. https://doi.org/10.13031/2013.26251
Ye B, Tang T, Yu G, Yi W, Zhang G, 2019. Dynamic analysis of rotary seedling pick-up mechanism of vegetable transplanting machine with counterweight. T CSAM 50 (8): 117-122．
Zhang Z, Wang J, Zhang W, Zhao X, Liu W, 2011. Kinematic analysis and performance experiment of cantilever cup vegetable transplanter. T CSAE 27 (11): 21-25.
Zhang Z, Cao W, Wang Q, Zhang P, 2013. Development status and prospect of plug seedlings automatic transplanting machine. J Agr Mechan Res 5 (5): 237-241.
Zhao C, Jiang Y, 1998. Gas jet dynamics. Beijing Institute of Technology Press, Beijing, China.
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