农机化研究2025，Vol.47Issue(7)：72-79,8.DOI:10.13427/j.issn.1003-188X.2025.07.010
水田行株间同步高效除草装置的设计与试验
Design and Test of the Synchronous and Efficent Weeding Device between Rows and Inter-plants in Paddy Fields
摘要
Abstract
To reduce the environmental problems caused by chemical weeding and improve the weeding rate of mechani-cal weeding devices,a rear mounted mechanical weeding device was designed that can synchronously and efficiently re-move weeds between rows and inter-plants.This device utilized a parallelogram four point suspension on the chassis of a rice transplanter,and transmitted power to the weeding components between rows and inter-plants through a gearbox.The inter row components of the weed control device buried weeds or cut the roots of weed stems and brought them out of the soil through active rotation;The weeding components between inter-plants rotate inward through toothed spokes to pick out weeds or drove them out of the soil and into the rows,where they were cut by inter row cutting tools.By utilizing the mechanical properties of soil and the root system differences of paddy plants,a model of key components between rows was established.The movement trajectory and coverage of paddy fields were analyzed using kinematic software.At the same time,the resistance to soil penetration and soil damage were analyzed using finite element software.The blade tooth structure of the inter row weeding component was determined to be a curved blade with a rotation radius of 160 mm,the total number of 6 blades,and a tooth width of 40 mm;The working rotation radius of the inter plant components was 95 mm,the height was 190 mm,and the center distance of the cutterhead was 219 mm.The field test results showed that the designed weed control device can fully stir the soil,with an average weed control rate of 85.26%and an average seedling damage rate of 4.48%.The experimental results met the expectations and met the requirements of agronomy.关键词
水田/行间除草部件/株间除草部件/运动学仿真/有限元仿真Key words
paddy field/rows weeding components/inter-plants weeding components/kinematics simulation/finite el-ement simulation分类
农业科技引用本文复制引用
吴康豪,徐豪聪,陈东顺,纪科辉,孙良,俞高红..水田行株间同步高效除草装置的设计与试验[J].农机化研究,2025,47(7):72-79,8.基金项目
国家重点研发计划项目(2022YFD2001802) （2022YFD2001802）
浙江省重点研发计划项目(2022C02006) （2022C02006）
