The Research On Vibration Of Steering Bridge Of All Terrain Crane

With the continuous progress of science and technology,the national overall strength has increased constantly,developing vigorously the domestic infrastructure , crane is an essential special vehicles in the domestic infrastructure,as a worker of crane Industry,who deeply understand that there is a gap between domestic and foreign crane technology。Based on the years of work experience,Summarizing and analyzing the crane industry technical advantages and disadvantages at home,believing that the research on the vibration of the vehicle drive axle need to be further in depth.In the first chapter, introducing the crane technology development status at home and abroad, profound understanding that the research on steering drive axle in domestic crane industry is exile. Because the impact of high frequency shift, large force and the other factors,especially for the high.powered drive axle, compared with developed countries, the research on the vibration of the vehicle drive axle is not ripe. By the tool of ADAMS/View, selected the steering drive axle of a 3.axis crane as the basis for building the prototype model,builded the prototype model. In order to conduct more in.depth,established a three.axis vehicle model vehicles,it is not only analysing the drive axle but also further analysing the impact on the vehicle.After building the virtual prototype,in order to analyze the capacity of bearing the load of vehicle driving axle,adding the same incentive to each vehicle axle,simulation results show that the load of each axle distributed uneven,the distance during axles need more careful design.Then select the vehicle during axle as the research object,analyzed the change of kingpin inclination tires, tire camber and ire toe angle,discussed in depth the tire which was impact on the vehicle steering performance when steering.In order to be closer to Ackermann Theorem,select the as the steering linkage as research object,simulated and analyzed the force of steering linkage tie rod,based on the result of simulation,optimized the steering linkage and the optimization results is more ideal.As for the crane,whose driving cycle is more complex, and whose working surface is not flat。When it is given Irregular load,it is easy to arouse torsional mode, bending mode, different modes to the bending and torsional bending combination mode of the bridge shell of crane。In order to get the vibration of vehicle steering axle under various conditions,simulated and analyzed natural frequency of finite element model of steering axle structure In the unload state,and also got the corresponding structural vibration mode diagram under it's natural frequency。The results show that it's r natural frequency of 5.orde mode is far greater than the incentives of road,so that the incentives of road couldn't lead to resonance of steering drive axle,it's design could need requirements and more reasonable.In finally,summarizes the main work of thesis,because the complexity of steering axle,couldn't analyze it's all aspects。Based on the research of thesisi,advised some reasonable proposals for the future research on steering drive axle.