盾构机主轴承智能空心滚子承载特性研究  

Research on load bearing characteristics of smart hollow rollers of shield machine main bearing

作　　者：田光耀 孙伟[1] 孙清超[1] 孙亮 TIAN Guangyao;SUN Wei;SUN Qingchao;SUN Liang(School of Mechanical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《大连理工大学学报》2025年第3期270-277,共8页Journal of Dalian University of Technology

基　　金：国家重点研发计划资助项目(2020YFB2006801);中央高校基本科研业务费专项资金资助项目(DUT21RC(3)083).

摘　　要：盾构机主轴承是盾构机的关键支撑部件,一旦失效将导致严重的后果.为了有效评估盾构机主轴承的运行状态,可以采用将传感器内置于空心滚子形成智能滚子的方式对主轴承进行实时监测.传统的理论模型不能准确反映真实工况下智能空心滚子的受力状态,因此为了更精确地对智能空心滚子进行分析和监测,需要建立智能空心滚子的力学特性分析模型.在曲梁理论的基础上,结合有限元分析和实验数据,发现智能空心滚子内孔顶点的应变与均布荷载呈正比关系,与空心度呈非线性关系;提出了描述轴向荷载下智能空心滚子荷载与应变关系的解析公式,该公式在智能空心滚子内孔轴向中间位置的应变-荷载-空心度的关系拟合中更为精确.基于该公式和智能空心滚子内应变片采集的应变数据可以对滚子受力进行快速准确的计算,进而评估轴承的寿命.The shield machine main bearing is a key support component of the shield machine,which will lead to serious consequences in case of failure.In order to effectively assess the operating condition of the shield machine main bearing,the main bearing can be monitored in real time by using sensors built into the hollow roller to form a smart roller.The traditional theoretical model cannot accurately reflect the force state of the smart hollow roller under real working conditions,so in order to analyze and monitor the smart hollow roller more accurately,it is necessary to establish an analytical model of the mechanical properties of the smart hollow roller.Based on the curved beam theory,by combining finite element analysis and experimental data,it is found that the strain at the inner hole vertex of the smart hollow roller is directly proportional to the uniform load and presents a nonlinear relationship with the hollowness.An analytical formula describing the relationship between load and strain of the smart hollow roller under axial load is proposed.This formula is more accurate in fitting the relationship among strain,load and hollowness at the axial middle position of the smart hollow roller′s inner hole.Based on this formula and the strain data collected by the strain gauges inside the smart hollow roller,the force on the roller can be quickly and accurately calculated,thereby assessing the life of the bearing.

关 键 词：盾构机主轴承 智能空心滚子 力学特性 有限元分析 

分 类 号：TH133.33[机械工程—机械制造及自动化]