牵引式山地果园运输机驱动绳轮摩擦磨损  

Friction and wear behaviors of driving rope wheel system in the traction type mountain orchard transporter

作　　者：李善军[1,2,3,4,5] 侯剑锋 万强 乔安国 李卫民 辛智强 刘兴 张子豪 Li Shanjun;Hou Jianfeng;Wan Qiang;Qiao Anguo;Li Weimin;Xin Zhiqiang;Liu Xing;Zhang Zihao(College of Engineering,Huazhong Agricultural University,Wuhan 430070,China;China Agriculture(Citrus)Research System,Wuhan 430070,China;Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River,Ministry of Agriculture and Rural Affairs,Wuhan 430070,China;National R&D Center for Citrus Preservation,Wuhan 430070,China;Citrus Mechanization Research Base,Ministry of Agriculture and Rural Affairs,Wuhan 430070,China;Wuhan Ligeng Orchard Machinery Corporation Limited,Wuhan 430070,China;Wuhan Teinso Technology Corporation Limited,Wuhan 430000,China)

机构地区：[1]华中农业大学工学院,武汉430070 [2]国家现代农业(柑橘)产业技术体系,武汉430070 [3]农业农村部长江中下游农业装备重点实验室,武汉430070 [4]国家柑橘保鲜技术研发专业中心,武汉430070 [5]农业农村部柑橘全程机械化科研基地,武汉430070 [6]武汉励耕果园机械有限公司,武汉430070 [7]武汉腾索科技有限公司,武汉430000

出　　处：《农业工程学报》2021年第2期71-78,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划(2020YFD1000101);现代农业(柑橘)产业技术体系建设专项资金项目(CARS-26);柑橘全程机械化科研基地建设项目(农计发[2017]19号);湖北省农业科技创新行动项目。

摘　　要：为探究牵引式山地果园运输机驱动绳轮系统的摩擦磨损机理,该研究首先利用Adams软件建立绳轮系统模型,在各因素水平允许范围内进行单因素试验,再进行台架试验分析不同因素对绳轮接触处摩擦磨损的影响。仿真模型计算结果表明,从连接负载端开始,各完整缠绕圈所在槽道受到的摩擦力沿钢丝绳方向呈现逐渐减小趋势,与多槽轮的磨损形貌分析结果一致,且槽道上容易发生的失效形式为塑性变形和微动磨损。单因素试验结果显示,圈数从2/3增加到4/5,受力最大处摩擦力减小48.66%,各槽道受力标准差由102.97 N减小到46.53 N,受力更加均衡;多槽轮中心距越小或轮径越大,各完整缠绕圈的槽道受力越均衡;同一多槽轮上的槽距和槽壁角度对摩擦的影响很小。台架正交试验的多槽轮磨损率分析结果表明,较大的中心距,较小的预紧力,较多的圈数可以缓解磨损。研究结果可为后续对驱动绳轮系统的优化提供参考。A system of driving rope wheel is the main driving part of a traction-type transporter for mountainous orchards.Specifically,a steel wire rope is winded alternately on two fixed multi-groove wheels in turn,and then the rope is tensioned after connecting into a closed loop in the system of driving rope wheel for the traction-type transporter.One multi groove wheel is connected with the power source,and another is fixed independently to the bodies which define the frame of a transporter.As such,the system of the driving rope wheel can provide the driving force for the orchard transporter,with a large working load,long working time,and serious wear.In this study,a systematic investigation was made to analyze the influence of variable factors on the tribological behavior at the dual contact region between a wire rope and pulley,in order to explore the friction and wear mechanism of a driving rope wheel system.A dynamic contact model of a rope and friction pulley was established using an ADAMS platform,where a series of comparative models were obtained by tailoring the parameters of each factor.A bench test was also carried out to verify the effectiveness of the mathematical model and numerical simulation of a driving rope wheel system.A tension sensor,electronic balance,and three-dimensional microscope system were used to quantify the force of steel wire rope,the wear amount,and wear morphology of multi-groove wheels.The simulation results showed that the complete winding can bear most of the friction force during contact.Starting from the load end of the connection,the friction force on the grooves at each complete winding circle decreased along the steel wire rope direction.The wear morphology of multi-groove wheels showed that the friction force of each groove also decreased along the direction of steel wire rope,where the failure mode of the groove was plastic deformation and wear mode.The number of winding circle increased from 2/3 to 4/5,compared with the calculation of the model.The friction force at the maxim

关 键 词：摩擦 仿真模型 磨损 果园运输机 驱动绳轮 台架试验 

分 类 号：S229.1[农业科学—农业机械化工程]