农业机械学报2025，Vol.56Issue(7)：72-81,10.DOI:10.6041/j.issn.1000-1298.2025.07.006
小麦小区育种脱粒装置优化设计与试验
Optimal Design and Test of Wheat Plot Breeding Threshing Device
摘要
Abstract
In order to solve the problem of high grain breakage rate and unthreshed grain rate of the existing wheat plot breeding threshing machine under the condition of multi-panicle threshing,a plot breeding and threshing system based on grain-tooth combined threshing element was proposed.Combined with the structure and working principle of the breeding threshing system,the contact mechanical analysis of wheat threshing separation and the structural design of threshing components were carried out.A discrete element model of flexible hollow stems of wheat was constructed,and the effects of the forward inclination angle,ridge width and ridge height of threshing component on the threshing performance of wheat breeding were explored by taking the unthreshed rate and breakage rate of grains as evaluation indexes.The Box-Behnken analysis method was used to construct a regression model of wheat threshing loss,and the optimal structural parameters of the grain-tooth combined threshing component were determined,with front bevel angle of 56°,ridge width of 13.9 mm and ridge height of 3.4 mm.The prototype trial production and test verification showed that when the drum speed was 800 r/min and the feeding amount was 15 ears/time,the unthreshed grain rate of wheat grains was 0.71％and grain breakage rate was 0.14％.The effectiveness and superiority of the grain-tooth combined threshing system designed in wheat multi-panicle breeding and threshing operation were verified.关键词
小麦/小区育种/脱粒装置Key words
wheat/plot breeding/threshing device分类
农业科技引用本文复制引用
陈黎卿,朱俊文,刘策,张春岭,张浩天,蔡增宾..小麦小区育种脱粒装置优化设计与试验[J].农业机械学报,2025,56(7):72-81,10.基金项目
国家现代农业产业技术体系项目(CARS-03-44) （CARS-03-44）
