Design and Experiment of the Buckwheat Hill-Drop Planter Hole Forming Device

Yu Chen, Yuming Cheng, Jun Chen, Zhiqi Zheng, Chenwei Hu and Jiayu Cao
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Yu Chen: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang‎ 712100, China
Yuming Cheng: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang‎ 712100, China
Jun Chen: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang‎ 712100, China
Zhiqi Zheng: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang‎ 712100, China
Chenwei Hu: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang‎ 712100, China
Jiayu Cao: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang‎ 712100, China

Agriculture, 2021, vol. 11, issue 11, 1-17

Abstract: The hole forming device is an important element of the buckwheat hill-drop planter, and its design level directly affects the seeding quality of the hill-drop planter. A hole forming device with a duckbill structure is widely used in hill-drop planters for wheat, cotton, peanuts, etc. According to the requirements of buckwheat seeding operations, this study designs the components of the duckbill hole forming device. It is determined that the duckbill upper jaw length is 65 mm, the duckbills number is 10, the pressure plate on the spring side length is 90 mm, the duckbill opening size is 8.79 mm, and the duckbill effective opening time is 0.1 s. Through co-simulation analysis of discrete element software EDEM (DEM-Solutions, Edinburgh, United Kingdom) and multi-body dynamics software RecurDyn (FunctionBay, Inc., Seongnam-si, South Korea), it is measured that when the pressure plate on the spring side is directly below the rotation axis of the dibber wheel, the spring compression is 33.3 mm, the pressure on the pressure plate is 95–102.6 N, and the contact time of a single duckbill with the soil is 0.2 s at a speed of 40 r/min. Based on the results of the design and simulation analysis, the large end diameter, small end diameter, original length and wire diameter of the duckbill spring are 36 mm, 26 mm, 60 mm, and 1.8 mm, respectively. An experimental bench for the seeding wheel of a buckwheat hill-drop planter was built, and three wire diameter duckbill springs of 1.6 mm, 1.8 mm and 2.0 mm were tested to verify the simulation and calculation results. The experimental results show that the optimal wire diameter of the duckbill spring is 1.8 mm. Finally, a single factor experiment of the dibber wheel rotation speed was carried out. The experimental results show that when the rotation speed of the dibber wheel is 40–65 r/min, the seeding qualification rate, seeding void hole rate and seeding damage rate of the buckwheat hill-drop planter are ?85.3%, 0, and <0.3%, respectively. This study provides a basis and reference for the hole forming device design of a buckwheat hill-drop planter.

Keywords: buckwheat; dibber wheel; hole forming device; EDEM; RecurDyn; co-simulation; experiment (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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