4UZL-1型甘薯联合收获机薯块交接输送机构设计  

Design of potato connecting and conveying mechanism for 4UZL-1 type sweet potato combine harvester

作　　者：申海洋 王冰 胡良龙 王公仆 纪龙龙 沈公威 吴腾 Shen Haiyang;Wang Bing;Hu Lianglong;Wang Gongpu;Ji Longlong;Shen Gongwei;Wu Teng(Nanjing Institute of Agricultural Mechanization,Ministry of Agriculture and Rural Affairs,Nanjing 210014,China;School of Mechanical Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]农业农村部南京农业机械化研究所,南京210014 [2]南京工程学院机械工程学院,南京211167

出　　处：《农业工程学报》2020年第17期9-17,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划(2016YFD0701604);国家现代农业甘薯产业技术体系建设专项(CSRS-10-B18)。

摘　　要：为了解决4UZL-1型甘薯联合收获机作业过程中损失率大、伤薯率高等问题,该研究在分析4UZL-1型甘薯联合收获机整机结构的基础上开展薯块交接输送机构设计。以薯块交接输送过程中伤薯率和损失率为主要评价指标,在单因素试验基础上运用Box-Benhnken试验方法,以挖掘输送机构角度、刮板链输送角度、挖掘输送机构速度、刮板链输送速度为试验因素,对4UZL-1型甘薯联合收获机薯块交接输送机构工作参数进行四因素三水平试验研究,建立了评价指标对各因素的多元回归模型,分析了各因素对作业质量的影响,并得到了最优结构和作业参数。试验结果表明:各因素对损失率从大到小的影响顺序为刮板链输送角度、挖掘输送机构速度、刮板链输送速度、挖掘输送机构角度;各因素对伤薯率从大到小的影响顺序为挖掘输送机构速度、挖掘输送机构角度、刮板链输送速度、刮板链输送角度;当机器前进速度为1 m/s,挖掘输送机构角度为20°、刮板链输送角度为68°、挖掘输送机构速度为1.2 m/s、刮板链输送速度0.67 m/s时,薯块损失率为1.12%、损伤率为0.94%,与预测值相比,误差分别为3.4%和1.1%。研究结果可为甘薯联合收获机的结构完善和作业参数优化提供参考。Sweet potato is an important food crop and energy crop.In order to solve the problems of larger loss rate and high damage rate of 4UZL-1 sweet potato combine harvester during the operation process,a potato connection and conveying mechanism was designed based on the analysis of the structure of 4UZL-1 sweet potato combine harvester and characteristics of domestic sweet potato planting models in this paper.The potato connection and conveying mechanism was mainly composed of a depth limiting mechanism,a digging conveying mechanism,an arc grid conveying mechanism and a scraper chain conveying mechanism.The working parameters were obtained through the kinematic and mechanical analysis of the working process of the mechanism.Aiming at the main evaluation indexes of potato damage rate and loss rate during the transfer and transportation,the Box-Benhnken test was presented on the basis of single-factor test.The angle of the digging conveyor,the conveyor angle of the scraper chain,the conveyor speed of the digging and the conveyor speed of the scraper chain were selected as testing factors.The multiple regression model of evaluation index to each factor was established,and the influence of each factor on operation quality was analyzed,and the optimal structure and operation parameters were obtained.The results showed that the order of the significance influence of factors on potato loss rate from large to small was that the conveyor angle of the scraper chain,the conveyor speed of the digging conveyor,the conveyor speed of the scraper chain and the angle of the digging conveyor.The order of the factors influencing on potato damage rate from large to small was the conveyor speed of the digging,the angle of the digging conveyor,the conveyor speed of the scraper chain and the conveyor angle of the scraper chain.When the forward speed of the machine was 1 m/s,the angle of the digging conveyor was 20°,the conveyor angle of the scraper chain was 68°,the conveyor speed of the digging was 1.2 m/s,and the conveyor speed of the

关 键 词：农业机械 设计 优化 甘薯联合收获机 交接输送机构 响应曲面 

分 类 号：S225.71[农业科学—农业机械化工程]