液压挖掘机履带行走装置的合理预张紧力  

Reasonable pre-tension research of crawler traveling gear of hydraulic excavator

作　　者：刘汉光[1,2] 王国强 孟东阁[1] 赵寰宇[3] 

机构地区：[1]江苏徐州工程机械研究院,江苏徐州221004 [2]徐工集团高端工程机械智能制造国家重点实验室,江苏徐州221004 [3]吉林大学机械科学与工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2018年第2期486-491,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2016YFC0802910);国家科技支撑计划项目(2015BAF07B02)

摘　　要：针对液压挖掘机履带行走装置的合理预张紧力进行了分析研究。在多体动力学软件RecurDyn中建立了挖掘机的虚拟样机模型,并通过实验测得了在直行、原地转向以及差速转向3种工况下的履带行走装置张紧力的曲线,与仿真结果进行对比,验证了虚拟样机模型的准确。通过对直行、爬坡以及原地转向3种典型工况下的仿真分析,得到了在改变履带行走装置预张紧力情况下,履带行驶时张紧力的变化情况,通过张紧力曲线的标准差来判断其波动情况,进而得到合理的预张紧力与车重的比例系数。The research focuses on the determination of reasonable pre-tension of crawler traveling gear of hydraulic excavator.The virtual prototype model of the excavator was established in the multi-body dynamics software RecurDyn.The pre-tension curves of the crawler traveling gear were obtained by experiments under three working conditions,horizontal straight,pivot steering and differential steering.Experiment results verified the accuracy of the virtual prototype model by comparing with the simulation results.By simulation analysis of three typical working conditions,horizontal straight,climbing,and pivot steering,the changes of the track tension during movement on wheel were obtained with the transformations of pre-tension of the crawler driving device.According to the judgment of the fluctuations based on the standard deviation of the tension curves,the reasonable proportional coefficient between the pre-tension and vehicle weight is received.

关 键 词：机械工程 液压挖掘机 虚拟样机仿真 预张紧力 

分 类 号：U469[机械工程—车辆工程]