Research On Lightweighting Of Civil Aviation Baggage Transfer Vehicle

Civil aviation electric baggage transporter is an important part of oil-to-electricity conversion project of the airport ground special equipment,mainly used to ensure the transportation of baggage.During the conversion,the chassis,body and other mechanical structures of the oil transporter are continued.For safety reasons,the mechanical structures of oil transporter are often thicker and heavier.Under the level of the most recent battery technology,the application of electric transporter,in the actual work,is limited of consideration of battery life.A light electric baggage transporter has become an important development direction of the current special equipment oil-to-electricity conversion project.Using ANSYS Workbench software,this paper makes finite element analysis on the conveyor frame of baggage transporters,then obtains the stress analysis and deformation sub-analysis under typical operating conditions,and carries on the strength verification.After that,lightweight analysis is applied on conveyor frame.Based on the optimization simulation results,combined with the engineering reality,the redesign is carried out,and the static analysis of the design results are carried out to verify the feasibility of the optimization results.The maximum stress of the conveyor frame increased from the original 94.74 MPa to176.71 MPa,and the weight reduced from 760 kg to 660 kg,a decrease of 13.2%.The same method was used to optimize the lightweight size of the frame.The maximum stress of the frame increased from 119.71 Mpa to 136.69 Mpa,and the weight reduced from 381 kg to 320 kg,a reduction of 16.1%.Finally,according to the optimization results,random vehicle vibration analysis performed to verify the feasibility of the optimization scheme.Perform a modal analysis on the entire vehicle,find the first 15 natural frequencies,and calculate the power spectral density of the conveyor vehicle acceleration.According to the modal analysis results and power spectral density to perform random vibration analysis on the conveyor vehicle.The rear wheel cover has a maximum equivalent stress of 119 Mpa,which meets vehicle design requirements.During the process of optimization: before the optimization,conveyor frame and vehicle frame meet the strength design requirements and have a larger lightweight margin.After the optimization,the thickness of the conveyor frame and vehicle frame reduced,and the qualityof the whole vehicle reduced as well.Reduced vehicle mass by 4.3%.But the strength of the optimized vehicle still meets the design requirements.During the vehicle random vibration simulation,it is found that the optimized frame can effectively avoid the occurrence of large vibration and resonance phenomenon,the disguised amount is small,the maximum deformation position is on the tail part.Finally,the overall strength meets the design requirements.It shows that this optimization schemes is effective and provides theoretical support for the lightweighting of civil aviation electric baggage conveyor transporter and the lighting of other civil aviation electric special vehivles.