摘要
针对南方水田泥脚深致作业机械行驶通过性差的问题,以高地隙动力底盘(离地间隙为1100~1500 mm)为研究对象,通过牵引性能试验,研究水田动力底盘的沉陷特性。在载荷800~1100 kg条件下,以车轮载荷和滑移率为试验变量,以车轮沉陷系数、驱动系数和挂钩牵引力系数为试验指标,建立了高地隙底盘沉陷模型。结果表明,模型中挂钩牵引力系数与驱动系数成正比,与沉陷系数成反比;利用田间试验获得该模型修正参数,修正系数为–0.30~–0.19,与载荷呈正相关,拟合值与田间试验值的误差小于5%。
Aiming at the problems of deep muddy feet and poor driving performance of working machinery in southern paddy fields,the subsidence characteristics of paddy field dynamic chassis wheels were studied through traction performance test with an example of high clearance chassis,whose ground clearance is 1100-1500 mm.Under the heavy load of 800-1100 kg,the wheel load and slip rate were taken as test variables,and the wheel subsidence coefficient,driving coefficient and hook traction coefficient were taken as test indexes.The subsidence model of high ground clearance chassis is established.The results show that the hook traction coefficient of the wheel is directly proportional to the driving coefficient and inversely proportional to the subsidence coefficient,respectively.The field test was used to obtain the correction parameter of the model,which was positively correlated with the load and in the range of–0.3 to–0.19.It is lead to the error between the fitted value and the measured value in the field test is less than 5%.
作者
林伟
石毅新
蒋蘋
胡文武
LIN Wei;SHI Yixin;JIANG Ping;HU Wenwu(College of Mechanical and Electrical Engineering,Hunan Agricultural University,Changsha,Hunan 410128,China;Yiyang Vocational Technical College,Yiyang,Hunan 413055,China)
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第5期623-628,共6页
Journal of Hunan Agricultural University(Natural Sciences)
基金
科技部重点研发计划项目(2017YFD0700903–2)
湖南省科学技术厅重点研发计划项目(2018NK2063、2019NK2141)
湖南省教育厅项目(18C0166)。
关键词
高地隙底盘
牵引性能
沉陷预估
挂钩牵引力
high ground clearance chassis
traction performance
subsidence model
hook traction force
