履带驱动轮系统失效机理研究  

Research on Failure Mechanism of Crawler Driving Wheel System

作　　者：刘汉光[1,2] 孟东阁[1] 李海龙[1] 李刚[3] LIU Han-guang MENG Dong-ge LI Hal-long LI Gang(XCMG Research Institute, Xuzhou 221004, Jiangsu, China State Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery of XCMG, Xuzhou 221004, Jiangsu, China School of Mechanical Science and Engineering, Jilin University, Changchun 130022, Jilin, China)

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,吉林长春130022

出　　处：《筑路机械与施工机械化》2017年第6期91-94,共4页Road Machinery & Construction Mechanization

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

摘　　要：为了解决液压挖掘机履带驱动轮连接螺栓易失效的问题,分析了驱动轮连接螺栓在工作过程中的受力状态,证实了失效的根本原因是预紧力不足。应用Hyperworks仿真方法验证了分析结论,提出扭矩控制并增加内齿圈锁紧垫片的螺栓连接改进方案,以提高驱动轮系统可靠性。以上研究方法可以分析评价其他型号液压挖掘机的履带驱动轮连接螺栓的安装扭矩及结构设计安全。In order to address the failure of the connecting bolts of the driving wheel on a hydraulic excavator, the stress state of the connecting bolts in the working process was analyzed, and it was proven that the root cause of the failure was the insufficiency of preload. The analytic results were verified by Hyperworks simulation. The improvement scheme for connecting bolts that combines the torque control method and the increase in internal gear locking pads was put forward to boost the safety and reliability of the driving wheel system. The forementioned research method can be used to evaluate the installation torque and structural design safety of the connecting bolts of other types of hydraulic excavators.

关 键 词：驱动轮系统 连接螺栓 预紧力 失效机理 

分 类 号：TU621[建筑科学—建筑技术科学]