The final, formatted version of the article will be published soon.
ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Technical Advances in Plant Science
Volume 16 - 2025 |
doi: 10.3389/fpls.2025.1458597
This article is part of the Research Topic Emerging Sustainable and Green Technologies for Improving Agricultural Production View all 17 articles
Design and testing of a posture-adjusting precision metering device for high-speed maize planting
Provisionally accepted- Northwest A&F University, Xianyang, China
This paper describes a new technical method that involves adjusting the seed-filling posture and fluidizing the seed group to improve the capacity of mechanical seed-metering devices for high-speed maize planting. The design of the novel posture-adjusting seed-metering device is presented and its operating principle is described.Then, an analysis of the structural parameters of the core component is presented. Specifically, the influences of the seed posture adjusting efficiency and seed flow distribution characteristics on the seed-filling effect were clarified by EDEM simulation. Subsequently, the high-speed metering performance was optimized and validated by bench testing. The experiment demonstrated that the type A groove had the highest seed posture adjusting efficiency, a more uniform seed flow distribution, and a superior seed-filling effect as compared to the other groove types. The best metering performance was achieved with an opening angle of 21.6° and an opening width of 8.4 mm; this resulted in pass, repeat, and leak rates of 94.8%, 1.3%, and 3.9%, respectively. Within the speed range of 8-14 km/h, the posture-adjusting seed-metering device demonstrated a pass rate of over 94%, a repeat rate below 2.1%, and a leak rate below 3.9%. Further, the designed device had a better high-speed planting capacity than a seed-metering device without a posture-adjusting mechanism.
Keywords: Maize, Seed-metering device, Posture adjustment, Seed flow, High-speed planting
Received: 02 Jul 2024; Accepted: 03 Jan 2025.
Copyright: © 2025 Dong, Gao, Zheng, Zhao, Bi and Huang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Zhouzhou Zheng, Northwest A&F University, Xianyang, China
Pengfei Zhao, Northwest A&F University, Xianyang, China
Yuxiang Huang, Northwest A&F University, Xianyang, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.