Mechanical Structure Design Of Experiment Platform For Shipboard Crane Anti-swing Technology And Anti-swing Experimental Study

As a common marine engineering equipment,the shipboard crane has been widely used in marine transportation industry.Due to influence of the complex external loads such as ocean wind,wave and tidal current when the shipboard crane works in the marine environment,and because the lifting sling is a flexible part,the lifting weight of the crane will constantly swing in the operation process.This kind of swinging movement will cause the lifting weight to be suspended again or to strike the cargo and staff on the ship,and even the normal lifting operation cannot be carried out when the sea level is relatively high,which seriously affects the working efficiency and safety of the crane.Therefore,in view of how to reduce the swinging problem of the lifting load,a comprehensive test platform for the anti-swing technology of the shipboard crane is designed to carry out a comprehensive study on the anti-swing technology of the shipboard crane,so as to change the status quo of the continuous swing of the lifting load in the operation of the crane and improve its working efficiency and safety.In the establishment of the model.First,the kinematic model of the experiment platform and the dynamic model of the payload system are established with the Newton Euler method,and then simulation is carried out with the MATLAB software to verify the correctness of the established model.At the same time,the factors affecting the anti-swing effect in the anti-swing process of the lifting system are analyzed,the dimension and stress parameters are provided for mechanical structure design.In the mechanical structure design,the SolidWorks software is used to design and optimize the 3D structure and check the mechanical strength,the stress and the strain of the mechanical parts are analyzed.The design content mainly includes three parts:the main body of the crane and the motion simulation platform.The motion simulation platform uses three electric cylinders to simulate the rolling,pitching and heave motion of the ship.The anti-swing device of the lifting system adopts a mechanical anti-swing design based on the limit of three cables,and three anti-swing cables are used to pull the hook,so as to limit the space position of the lifting weight and realize the purpose of reducing the swing range of the lifting weight.In order to meet the comprehensive experiment of anti-swing technology of shipboard crane,the following innovative design is carried out;the overall structure of the test platform can be quickly disassembled and assembled;the lifting boom is a segmented structure;the angle of the mechanical arm can be adjusted;the constant tension hook structure and so on.Build "The experiment platform for shipboard crane anti-swing technology" for anti-swing experimental study,and eompare the experimental results with the simulation results,the results show that the self-designed experimental platform can well complete relevant experiments with the crane anti-swing technology;The designed anti-swing device has good anti-interference ability and strong robustness,and has good anti-swing effect in practical application.After installing the designed anti-swing device,the anti-swing effect of the swing angle X of the crane payload system can reach more than 61%,the anti-swing effect of the swing angle Y of the crane payload system can reach more than 62%.A shipboard crane equipped with this device can greatly reduce the impact of marine environmental load on the payload system,improve the efficiency and safety of lifting operations.