大连理工大学学报2025，Vol.65Issue(3)：270-277,8.DOI:10.7511/dllgxb202503008
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
摘要
Abstract
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Key words
shield machine main bearing/smart hollow roller/mechanical properties/finite element analysis分类
机械工程引用本文复制引用
田光耀,孙伟,孙清超,孙亮..盾构机主轴承智能空心滚子承载特性研究[J].大连理工大学学报,2025,65(3):270-277,8.基金项目
国家重点研发计划资助项目(2020YFB2006801) （2020YFB2006801）
中央高校基本科研业务费专项资金资助项目(DUT21RC(3)083). （DUT21RC(3）
