随动式残膜回收机起膜捡拾机构设计与试验  

Design and Experiment on Collecting and Removing Device for Profile Modeling Residual Plastic Film Collector

作　　者：王昭宇 陈学庚[1,2] 颜利民 蒋德莉[1] 王明恩 WANG Zhaoyu;CHEN Xuegeng;YAN Limin;JIANG Deli;WANG Ming'en(College of Mechanical and Electrical Engineering,Shihezi University,Shihezi 832003,China;Key Laboratory of Northwest Agricultural Equipment,Ministry of Agriculture and Rural Affairs,Shihezi 832003,China)

机构地区：[1]石河子大学机械电气工程学院,石河子832003 [2]农业农村部西北农业装备重点实验室,石河子832003

出　　处：《农业机械学报》2021年第4期80-90,共11页Transactions of the Chinese Society for Agricultural Machinery

基　　金：兵团重大科技项目(2018AA001/02);自治区研究生科研创新项目(XJ2019G119)。

摘　　要：针对随动式残膜回收机在捡拾地膜过程中存在的杂质壅堵问题,设计了一种新型起膜捡拾机构。通过分析机构起膜过程,确定了起膜轮轮刺高度、起膜轮排列间距等主要结构参数,通过分析机构拾膜过程,确定了机具行进速度和起膜轮转速等工作参数。以起膜轮转速、机具行进速度和起膜轮间距为试验因素,以起膜率、排杂率为响应值,利用Design-Expert 8.0. 5软件进行回归分析和响应面分析,得出各因素对起膜率和排杂率的影响顺序由大到小均为:起膜轮转速、机具行进速度、起膜轮间距,并分别建立了起膜率、排杂率与起膜轮转速、机具行进速度、起膜轮间距的三元二次回归模型。采用非线性优化计算方法进行优化计算,结果表明:当起膜轮转速为26.2 r/min、机具行进速度为1.23 m/s、起膜轮间距为139.95 mm时,起膜率理论值为91.49%,排杂率理论值为92.92%。在起膜捡拾机构参数最优组合下的田间试验表明,起膜率均值为90.45%,排杂率均值为91.30%。It is well known that mulch technology can effectively improve crop yield,but residual mulch will also damage soil structure and cause agricultural pollution. At present,China has developed a variety of residual film recycling machine to solve this problem. Aiming at the problem of impurities congestion in the process of picking up plastic film with the following film recycling machine,a new film picking up mechanism was designed based on the existing types of film recycling machine. The main structural parameters of the height of the working rod of wheel to remove impurities and the spacing of wheel to remove impurities were determined by analyzing the separation process of membrane soil in the mechanism,and through the analysis of the process of picking up the mulch film,the travel speed of the machine and the rotation speed of wheel to remove impurities were determined. The rotating speed of the wheel to remove impurities,the moving speed of the machine and the spacing of the wheel to remove impurities were determined as the main factors of the test. The ratio of membrane to soil separation and the ratio of impurities removal were taken as the response values. Design-Expert 8. 0. 5 was used for regression analysis and response surface analysis,and the influence of various factors on the membrane soil separation ratio and the impurity removal ratio was determined by using this method. The results showed that the degree of influence on the separation ratio of mulched soil and the ratio of impurities discharged both were the rotating speed of the wheel to remove impurities,the moving speed of the machine and the spacing of the wheel to remove impurities. Moreover,a ternary quadratic regression model was established,which contained these factors. The nonlinear optimization method was used to optimize the parameters of the mechanism,the results showed that when the rotating speed of the wheel to remove impurities was 26. 2 r/min,the moving speed of the machine was 1. 23 m/s and the spacing of the wheel to remove im

关 键 词：残膜回收机 起膜捡拾机构 随动式 

分 类 号：S223.5[农业科学—农业机械化工程]