Optimization of the key position parameters for tractor steering wheel based on a driver’s arm muscle load analysis  

作　　者：Hongmei Xu Hao Yang Yujun Shang Yinpei Zhang Zhangfen Liu Qichao Wang Guozhong Zhang 

机构地区：[1]College of Engineering,Huazhong Agricultural University,Wuhan 430070,China [2]Key Laboratory of Agricultural Equipment in Mid-lower Reaches of the Yangtze River,Ministry of Agriculture and Rural Affairs,Huazhong Agricultural University,Wuhan 430070,China

出　　处：《International Journal of Agricultural and Biological Engineering》2023年第5期236-247,共12页国际农业与生物工程学报（英文）

基　　金：supported by National Natural Science Foundation of China(Grant No.51875230,52175232).

摘　　要：Steering wheel is the most frequently used manual device in tractors,whose position directly affects the handling comfort of the driver and fatigue degree of the arm muscles.In this study,the biomechanical modelling software AnyBody was used for an inverse kinetics analysis of the rotation process of tractor steering wheel,calculate the muscle activation degree of the driver’s arm and compare it with the calculated results of surface EMG tests to verify the reliability of the biomechanical model.Based on the biomechanical model,the effects of three position parameters(steering wheel inclination,front-back distance,and upper-lower height)on the activation degree of the driver’s arm muscles were evaluated.The results demonstrated that steering wheel inclination has the most significant effect on the degree of muscle activation,followed by the upper-lower height and then front-back distance.Considering the interaction among factors,a regression orthogonal test was designed,and the test results revealed that the minimum muscle activation(1.2887)can be obtained with the steering wheel inclination of 31°,front-back distance of 431 mm and upper-lower height of 375 mm.The findings can provide a reference for optimizing the structure and position parameters of tractor steering wheels.

关 键 词：TRACTOR steering wheel driver’s arm biomechanical characteristics position parameter optimization 

分 类 号：S22[农业科学—农业机械化工程]