摘要
Abstract
In this paper,three calculation methods are put forward for the force calculation of the rope arrangement mechanism of hydraulic cylinder of a 25t truck crane.According to the connection mode of hydraulic cylinder rope arrangement mechanism(telescopic hydraulic cylinder between booms and rope arrangement pulley),the force calculation formula was derived,and a finite element model of boom system was established.The pulley was simplified as two beams rotating around the center,and the rope arrangement between pulleys adopts node coupling mode,so as to take deformation into account and accurately calculate the force between booms.A dynamic simulation model of multi-body system was established,and the dynamic analysis,analytical calculation and finite element analysis were compared,and the obtained analysis results were consistent.The force difference between rigid and geometrically nonlinear deformation of hydraulic cylinder and rope row was analyzed,and the axial force difference between single cylinder bolt and hydraulic cylinder rope row was compared,which can serve as a reference for the design and calculation of telescopic boom rope row crane.关键词
汽车起重机/液压缸绳排/单缸插销/有限元/变形Key words
truck crane/hydraulic cylinder rope arrangement/single cylinder bolt/finite element method/deformation分类
交通工程
