摘要
油菜割晒机是一种有许多输入和输出变量的复杂动态系统,可以用数学模型对油菜割晒机输送和铺放相关因素进行描述。分析了油菜的生物形态、割晒时油菜的成熟度、输送和铺放机构结构参数之间的关系以及排禾口因素对油菜割晒作业铺放质量的影响。给出了铺放质量与机器前进速度以及输送装置、排禾口部分参数之间的关系。田间试验表明,油菜株高在1.3～1.7m,黄熟期比较适宜于割晒作业。拨禾轮圆周线速度与前进速度的比值宜控制在1.1～1.5,输送带速度与前进速度的比值宜控制在3.2～5.0,横向拨动装置对输送带上油菜秸秆的作用节奏和作用速度与输送带输送速度相互协调时,油菜割晒作业总损失率≤1%,油菜茎秆铺放角≤30°,铺放角度差≤15°,铺放质量达到要求。
The rape windrower was a dynamic system that including many input and output variables.Windrow quality mathematical model was used to describe the correlation of windrowing and transporting.An analysis on the relationship of biological morphology,the maturity when rape windrowing,the structure parameters of transporting mechanism and windrowing mechanism were given.The effect degree of exhaust straw port on windrow quality during the winding was analyzed.The correlations of windrow quality with the velocity of machine moving,transportin device parameter and exhaust straw port parameters were made.The results of field test showed that rape in the height of 1.3-1.7 meters,and in the yellow ripe stage was much suitable for cutting.The ratio of reel pad peripheral speed and machine moving speed should be chosen in the range of 1.1-1.5.The ratio of conveyor belt speed and machine moving speed should be chosen in the range of 3.2-5.0.The working rhythm and speed of stalk on the conveyor belt controlled by the transverse stir device must be coordination with transporting speed of the conveyor belt.Under those conditions that mentioned above,the windrower could get the total loss of windrowing was less than 1%,the windrowing angle of rape stalk was less than 30°,the windrowing angle difference was less than 15°,and the windrowing quality could meet the requirements of the agronomy.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2012年第2期45-48,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
2007年农业部公益性行业(农业)科研专项经费资助项目(3-85)
油菜现代产业技术体系建设项目(nycytx-00519)
关键词
收获
数学模型
因素化
油菜割晒机
作业质量
harvesting
mathematical model
factorization
rape windrower
windrow quality
