旱地全膜双垄沟残膜回收机关键作业参数试验分析

Analysis of key operating parameters on retrieving machine for film residue from whole plastic film mulching double ridges in arid land

为提高弹齿式旱地全膜双垄沟残膜回收机的拾净率,以起膜齿齿数、起膜齿入土深度、搂膜耙齿齿径和齿数为试验因素,拾净率为试验指标,进行单因素试验;在单因素试验基础上,选取对拾净率影响显著的因素——起膜齿齿数、起膜齿入土深度、搂膜耙齿齿径进行三因素三水平正交试验,并对试验数据进行极差分析,以确定残膜回收机最佳工作性能参数。正交试验结果表明,起膜齿齿数为4个,起膜齿入土深度为50 mm,前、中、后搂膜耙齿齿径分别为10、8和6 mm时,拾净率最高,为93.6%。重复试验结果表明:该机残膜拾净率为93.4%,远高于75%的标准,能满足残膜回收作业质量要求。

To improve net picking rate of spring-tooth type retrieving machine for film residue from whole plastic film mulching double ridges in arid land, number of cutting film teeth, buried depth of cutting film teeth, diameter and number of collecting film teeth were used as experimental factors and net picking rate as experimental indicator to conduct single factor experiment, based on which, number of cutting film teeth, buffed depth of cutting film teeth and diameter of collecting film teeth which have significant effect on net picking rate were chose to conduct three-level orthogonal experiment. The experimental data was analyzed by range analysis to determine the best working performance parameters of the retrieving machine. The results of the orthogonal experiment showed when the number of cutting film teeth was 4, the buried depth of cutting film teeth was 50 mm and diameter combination of front, middle and back collecting film teeth was 10, 8 and 6 mm respectively, the highest net picking rate of 93.6% was obtained. The results of replicated experiments showed the net picking rate was 93.4% （〉75%） which met operating quality requirements of recycling plastic film.