气力集排式油菜精量排种器的排种过程分析  

Analysis of metering process in pneumatic centralized metering device for rapeseed

作　　者：张猛[1] 余佳佳[1] 刘晓辉[1] 廖庆喜[1] 

机构地区：[1]华中农业大学工学院,武汉430070

出　　处：《华中农业大学学报》2012年第1期116-120,共5页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(50875104);教育部高等学校博士学科点专项科研基金项目(20090146110016)

摘　　要：为探明气力集排式油菜精量排种器的排种过程,分析了排种过程中充种、护种、投种等各阶段种子的运动规律,以不同阶段中吸附力的变化为基础,观察了排种器的结构参数和工作参数对排种过程的影响,进而建立了排种器各参数与吸附力之间的关系式以及种子的运动学模型。Through analyzing the metering process of pneumatic centralized metering device for rapeseed, the moving laws of seeds were found during the absorbing, protecting and dropping stages. Based on the variations of absorption forces, the effects of the metering devices with structure parameter and operating parameters on the metering process were analyzed; kinematic model of seed and the rela- tionship between the absorption force and the parameters were established. The research provides theo- retical evidence for the optimal design of metering device.

关 键 词：排种器 油菜 充种 投种 运动学模型 

分 类 号：S223.25[农业科学—农业机械化工程]