Optimized Design And Movement Simulation Of Container Crane Stay Bar System

Quayside container crane is a special crane for loading container ships at container quayside.With the development of world shipping,the transport fleets have a large-scale trend.Panama,super panama transport fleets are widely used.In order to adapt to the rapid increace of traffic volume and ship upsizing trend for loading and unloading speed of urgent need,quayside container crane is developing in efficient, the large-scale direction,the size and weight inevitably developed as a result.In the design of quayside container crane,how to rational use of materials,reduce the dead weight,decrease of the wheelload,improve safety and product quality,reduce cost, have important theoretical significance and economic value.Boom is the main component that bears the moving load,improving its bearing capacity and reduces weight is most important.On the other hand,with the container fleets large-scale trend and technical progress,the main parameters of the container crane rise,thus make more and more container cranes use double backstay bars form in design.For double bars,beacause double backstay bars stmcturedue is indeterminate structure,of the calculation of its internal force and deformation of the structure is more complex than solving single backstay bars.The design of container crane is mainly referring to existing similar type.There is seldom change in parameters such as thickness,which caused many unnecessary waste.And in the container cranes structure design,CAD soft auxiliary checking tools which are not made full use of. Paper acorrding to container crane characteristics,based on APDL parameterized modeling of the finite element analysis software ANSYS,focuses on the forestay hoisting position,boom structure size and weight in multi-objective optimization design and analysis,thereby to make force ditribution reasonable prior to satisfy the intensity and rigidity condition,and reduce its weight.Considering there are too much variables in the boom and forestay,optimization is carried out twice in this paper.First,use optimal gradient method to do sensitivity analysis of design variables. Filter the design variables in referrence to the results of the analysis.And for the sensitive variables use First-Order method again to optimize design.In order to comply with engineering practice,the optimal results are rounded.Stays bar system design of container crane rely on experience design method, which is not efficient or prospective.For instance,interference occurs in manufactured staybar system while the boom is luffing and the inside and outside forestay is folding.Through the analysis of the forestay in the process of luffing motion,its general trajectory parameters are available.Interference check is preceded based on the optimization results and SolidWorks parameterized modeling.