伸缩钉齿式残膜捡拾机参数优化及试验

Parameter Optimization and Test of Telescopic Nail Tooth Type Residual Film Pick-up Machine

针对国内残膜回收机捡拾率不高以及卸膜困难等问题,设计了一种伸缩钉齿式残膜捡拾机。首先,阐述该机的整体结构和工作原理,根据理论分析及前期试验确定以滚筒转速X_(1)、捡拾齿入土深度X_(2)及卸膜转速X_(3)为试验因素,把残膜捡拾率Y_(1)与卸膜率Y_(2)作为目标响应值;然后,通过Design-expert软件对目标响应值进行数据分析,得到影响残膜捡拾率Y_(1)的显著顺序为滚筒转速X_(1)>捡拾齿入土深度X_(2)>卸膜转速X_(3),影响卸膜率Y_(2)的显著顺序为卸膜转速X_(3)>捡拾齿入土深度X_(2)>滚筒转速X_(1)。试验验证表明:当滚筒转速X_(1)为135 r/min、捡拾齿入土深度X_(2)为81 mm、卸膜转速X_(3)为390 r/min时,此时残膜捡拾率Y_(1)为87.56%,卸膜率Y_(2)为90.05%,试验值与优化结果的相对误差分别为1.53%、1.65%,均小于5%。试验结果可为残膜回收捡拾机械的设计提供理论依据。

At present,in view of the low pick-up rate of the domestic residual film recovery machine and the difficulty of unloading the film,a retractable nail-tooth residual film pick-up machine has been designed.First explain the overall structure and working principle of the machine.According to theoretical analysis and preliminary tests,it was determined that the drum speed X_(1),the pick-up tooth depth X_(2)and the film unloading speed X_(3) were the test factors,and the residual film pick-up rate Y_(1)and film unloading rate Y_(2)were the target values,and the design-expert data processing software was used to target it.Based on the response surface optimization analysis,the significant order that affected the residual film pick-up rate Y_(1)was:drum speed X_(1)>picking tooth depth X_(2)>unloading film rotation speed X_(3),and the significant order affecting film unloading rate Y_(2)was:unloading film rotation speed X_(3)>picking tooth penetration depth X_(2)>drum rotation speed X_(1),and the test was verified:when the drum rotation speed X_(1)was 135 r/min,the picking tooth penetration depth X_(2)was 81 mm,and the film unloading rotation speed X_(3) was 390 r/min,the residual film was picked up at this time The rate Y_(1)was 87.56%,and the film unloading rate Y_(2)was 90.05%.The relative errors between the test value and the optimized result were 1.53% and 1.65%,which were both less than 5%.The test results provide a theoretical basis for the design of residual film recovery and picking machinery.