Authors

Abstract

In view of Xinjiang cotton fields has caused certain damage to the soil environment. In severe cases, it even affected the germination of seeds and hindered the growth of crop roots. In this paper, a 4SGMS-220 plough layer residual film recovery machine with a ground preparation device is designed. The main part of the machine is composed of a filming mechanism, a conveying mechanism, a soil crushing roller, and a film collecting box. The machine can achieve simultaneous film lifting, film stripping, collecting membrane and suppression operations. In this paper, primary focus is placed on the design of the filming mechanism, while the movement trajectory of the comb teeth and the filming condition are analyzed in detail. In order to obtain the optimal combination of equipment and operating parameters, the equipment traveling speed, the filming device rotational speed, and the comb teeth depth are used as the influencing factors. Furthermore, the residual film recovery rate and impurity rates are employed as test indicators for three-factor three-level response surface experiment and optimization via Design-Expert software. The results indicate that optimal operation is achieved for the machine travel speed of 4.1 km/h, the filming device speed of 106 min-1, and the comb tooth soil penetration depth of 139.2 mm. The residual film recovery rate is equal to 74.32%, while the residual film impurity rate is equal to 7.11%. The difference between the test results and the predicted values is relatively small. Thus, it can be concluded that the optimized model is reliable.

Abstract in Chinese

针对新疆棉田耕层残膜滞留对土壤环境产生了一定破坏、严重时会影响种子发芽和阻碍作物根系生长等问题，该文设计了一种带有整地装置使用的4SGMS-220型耕层残膜回收机。4SGMS-220型耕层残膜回收机由起膜机构、输送机构、碎土辊、镇压辊和集膜箱等组成，可一次性完成起膜、脱膜、集膜、平土及镇压作业。机具重点设计了起膜机构和脱膜机构，并对梳齿的运动轨迹和脱膜条件进行了分析。为得到机具与作业参数的最佳组合，将机具行进速度、起膜辊转速、梳齿入土深度作为影响因素，以残膜回收率和残膜含杂率为试验指标进行三因素三水平响应面试验，利用Design-Expert软件进行优化。结果表明，机具行进速度4.1km/h、起膜辊转速106r/min、梳齿入土深度139.2mm时作业最佳，残膜回收率为74.32%，残膜含杂率为7.11%，试验结果与预测值相差较小，优化模型可靠。