无拱度桥式起重机主梁挠度模型搭建及其影响因素  

Deflection model establishment of main beam of camber-free bridge crane and influencing factors

作　　者：张璐凡 李雪丽[3] 张海红[1] 马兵 吴军 Zhang Lufan;Li Xueli;Zhang Haihong;Ma Bing;Wu Jun

机构地区：[1]河南工业大学机电学院,郑州450007 [2]卫华集团有限公司,长垣453400 [3]中原工学院机电学院,郑州450007

出　　处：《起重运输机械》2019年第13期79-85,共7页Hoisting and Conveying Machinery

基　　金：面向微电子制造超高加速度宏微运动平台(51705132)

摘　　要：无拱度主梁作为关键部件对起重机有效利用资源、高效自动化及更新换代等关键技术创新具有重要意义。本文以10t-22.5 m桥式起重机主梁为案例,分别采用理论分析和有限元方法搭建无拱度主梁挠度模型。基于挠度模型,分别探究了挠度及对应最大应力随着负载、均布载荷和跨度、宽度及高度的变化规律。更进一步,描述了挠度及对应最大应力对跨度、宽度及高度灵敏度随着负载和均布载荷的变化趋势。最后对主梁挠度理论模型和有限元模型计算结果,变化规律及灵敏度的变化趋势进行比较分析。研究成果为后续形成具有自主知识产权的无拱度桥式起重机的高效生产工艺和相关技术标准提供理论支持。As a key component,the camber-free main beam is of great significance to the key technological innovations of cranes such as effective utilization of resources,high efficiency automation and upgrading.Taking the main beam of 10t-22.5 bridge crane as an example,theoretical analysis and finite element method are respectively used in the paper to establish the deflection model of camber-free main beam.Based on the deflection model,the variation laws of deflection and corresponding maximum stress with load,uniformly distributed load,span,width and height are explored respectively.Furthermore,the variation trend of deflection and corresponding maximum stress sensitivity to span,width and height with load and uniform load is described.Finally,the calculation results of the theoretical model and finite element model of main beam deflection,the change rule and the change trend of sensitivity are compared and analyzed.The research results provide theoretical support for the subsequent formation of high-efficiency production technology and related technical standards of camber-free bridge cranes with independent intellectual property rights.

关 键 词：桥式起重机 无拱度主梁 挠度 有限元方法 

分 类 号：TH215[机械工程—机械制造及自动化]