基于Ansys的大型桁架伸缩臂分析及应用

Analysis and application of large truss telescopic boom based on Ansys

由于风电机组更大、更重、更高等特点,且风电场地形复杂,故对起重安装设备的要求越来越高。专用的轮胎起重机优势明显,轮胎底盘创新构造,桁架伸缩臂兼有履带起重机桁架臂和汽车起重机伸缩臂的优点,吊装参数大,抗风能力强,且结构紧凑。其中,上车采用多级伸缩桁架结构,为了满足转场运输道路限制,采用三方位预应力体系,提升了大长细比类高耸轻柔型桁架结构的系统刚度和强度。文中通过优化分析、缩比模型验证及实体成功应用,形成了新的设计方法,并详细叙述了该方法的性能特点、结构情况、应用效果,为起重机的创新设计提供了参考。

As wind turbines are bigger,heavier and taller,and the terrain of wind farms is complex,the requirements for hoisting and installation equipment are getting higher and higher.The special tire crane has obvious advantages,the tire chassis adopts innovative structure,and the truss telescopic boom has the advantages of both crawler crane truss boom and truck crane telescopic boom,with large hoisting parameters,strong wind resistance and compact structure.Among them,the boarding car adopts multi-stage telescopic truss structure.In order to meet the restrictions of transit transportation roads,a three-orientation prestressed system is adopted,which improves the system stiffness and strength of high-rise and soft truss structures with large slenderness ratio.Through optimization analysis,verification of scale model and successful application,a new design method is put forward,and its performance characteristics,structure and application effect are described in detail,which provides a reference for innovative design of cranes.