基于应力测试的港口门座起重机金属机构剩余寿命估算分析  

Estimation and analysis of residual life of metal mechanism of portal crane based on stress test

作　　者：李福森 贾华龙 王晓敏 王旭虹 刘东 Li Fushen;Jia Hualong;Wang Xiaomin;Wang Xuhong;Liu Dong

机构地区：[1]国家起重运输机械质量监督检验中心,北京100007

出　　处：《起重运输机械》2020年第5期45-48,共4页Hoisting and Conveying Machinery

摘　　要：以某港口门座起重机为研究对象,采用疲劳寿命估算方法,从材料的S-N曲线出发,考虑各种影响因素,结合实测应力谱,按照线性累积损伤理论及修正Miner法则,进行金属结构的疲劳寿命估算,再结合起重机的结构件劣化状态,无损检测等技术手段进行综合分析,估算出起重机的安全使用寿命,为门座起重机疲劳剩余寿命评估提供有效可行的方法,对准确估算门座起重机金属结构疲劳剩余寿命提供科学的数据。Taking portal crane in a port as the research subject,adopting the fatigue life estimation method,based on the S-N curve of the material,considering various influencing factors,and combining with the measured stress spectrum,the fatigue life estimation of the metal structure is carried out in line with the linear cumulative damage theory and the modified Miner’s rule.Then,combined with the deterioration state of structural members of cranes,nondestructive testing and other technical means,the safe service life of the crane is estimated,which provides an effective and feasible method for evaluating the fatigue residual life of portal crane and scientific data for accurately estimating the fatigue residual life of metal structures of portal cranes.

关 键 词：应力测试 门座起重机 金属结构 剩余寿命 

分 类 号：TH213.4[机械工程—机械制造及自动化]