摘要
腰绳作为大吨位履带起重机起臂主要构件,其长度、安装位置对履带起重机臂架的挠度有着重要影响。根据臂架柔性系统力学变化特性,提出基于虚拟样机技术的履带起重机腰绳设计方法。建立腰绳和履带起重机臂架系统虚拟样机柔性动力学模型,通过有腰绳状态3种不同方案和无腰绳状态臂架系统分析,获得起臂工况下臂架系统挠度变化情况。实例计算结果表明:基于虚拟样机技术设计的腰绳可有效减小臂架起臂挠度,大幅改善臂架应力情况,有效降低大吨位履带起重机作业风险,具有较好的工程应用价值。
As the main hoisting component of large-tonnage crawler crane, the Auxiliary bracing＇s length and installation position has important influence for the deflection of the crawler crane＇s boom. According to the characteristic of the flexible boom system, the design method of the Auxiliary bracing for the large-tonnage crawler crane would be given based on the virtual prototype technology. The flexible dynamic model of the boom would be built with an auxiliary bracing. Then three schemes with auxiliary bracing and boom with no auxiliary bracing are analyzed to get the deflection of the boom system under the boom-hoisting condition, Results indicated that the design method would reduce effectively the deflection, significantly improve the boom＇s stress situation and decrease the risk of the large tonnage crawler crane.
出处
《机械设计与制造》
北大核心
2016年第9期19-22,共4页
Machinery Design & Manufacture
基金
国家自然科学基金项目(51275070)
关键词
履带起重机
腰绳设计
大吨位
虚拟样机技术
Crawler Crane
Auxiliary Bracing
Large-Tonnage
Virtual Prototype Technology
