1MLQS—40/70起垄全铺膜联合作业机性能优化试验

Optimal experiment of performance for the 1MLQS-40/70 combined machine as ridge forming and paving plastic mulch

为了检验并优化自主研制的1MLQS—40/70起垄全铺膜联合作业机作业性能,以采光面机械破损程度、膜边覆土宽度合格率、膜边覆土厚度合格率、地膜漏覆土程度为作业指标,采用三因素三水平进行正交试验。通过极差分析和方差分析,得出土壤升运器前轴与开沟铲安装轴的纵向间距对各试验指标的影响显著;通过综合平衡法对试验数据进行优化分析,得出最优参数组合为:土壤升运器前轴与开沟铲安装轴的纵向间距为30 mm、土壤升运器线速度与机组作业速度的比值为2.5、起垄开沟铲倾角为25°。验证试验表明:该机采光面机械破损程度<1%,膜边覆土宽度合格率>95%,覆土厚度合格率>95%,地膜漏覆土程度<1%。

In order to examine and optimize the working performances of independently developed 1MLQS-40 /70 combined machine with ridge forming and paving plastic mulch,taken the degree of mechanical damage on lighting surface,the qualified rate of soil covered width at film side,the qualified rate of soil covered thickness at film side and the degree of miss covered soil on film for the operation index,adopted the orthogonal test as threefactors and three-levels. Through the range and variance analysis,has obtained the significant effect of longitudinal space beween soil elevator front axle and the furrowing shovel installation axle. Through the comprehensive balance method to carry out the optimal analysis for the experimental data,has obtained the maximal parameter combination as： The longitudinal space between soil elevator front axle and the furrowing shovel installation axle was 30 mm,the ratio of soil lifting elevator speed and working speed of the machine was 2. 5,the angle of furrowing shovel was25°. The validation test showed that degree of mechanical damage on lighting surface was less than1%,the qualified rate of soil covered width at film side was more than 95%,the qualified rate of soil covered thickness at film side was more than 95% and the degree of miss covered soil on film was less than 1%.