Design And Simulation Of Electro-Hydraulic Driving Automatic Hook Of Crane On Vessel

As an important deck machinery,marine cranes play an irreplacable role in the transportation of cargo between ships and ships,between ships and ports as well as supplies of military ships.In general,the hook used in the ship does not have the automatic unloading function,in the release of the buoy and other work in the process of manual stripping,while the ship vulnerable to wind,waves,flow and other external environment,resulting in roll or pitch,and further increase the risk of working environment.Therefore,it is very important to design the hook with automatic unloading function,which can protect the safety of the relevant staff and improve work efficiency.In this chapter,the design scheme of the automatic hook is determined by the mechanism system which uses the electric-liquid system as the driving unit and the handle as the execution unit.Through the analysis of the structure of the hook,the alloy steel,ductile iron and structural steel are selected as the hook material and the size of the automatic unloading hook is determined.After the design of the hook structure and the components of the hook,in order to more clearly understand the unloading hook movement process,the kinematic simulation of the opening and closing process of the tool is carried out.For the strength analysis of the hook,set the external static load as 4900N,and use Adams for kinematics analysis,to obtain the maximum dynamic load as 10900N.Based on the Ansys analysis of the gripper,the bearing platform and the thrusting rod,the finite element analysis of the overall structure of the hook is carried out.By examining the stress and deformation of the hook structure and the deformation in both directions of X(gripper open and closed direction)and Y(gravity direction),verify the rationality of structural design and material selection.In order to further increase the flexibility of the hook,use response surface module to optimize the design of automatic hook to reduce the quality of hook.At the same time,the fatigue analysis of the hook is carried out to further enhance the reliability of the ship hook.Through this paper,not only the automatic hook is designed,but also the strength analysis,the optimization design and the fatigue analysis are carried out,which laid a solid foundation for the design research and application of hook.