Structural Design And Motion Analysis Of Heavy-Duty AGV

At present,the manufacturing industry is facing huge industrial upgrade pressure,and there is a strong demand for industrial automation and flexible manufacturing systems.Automatic guided vehicles are one of the keys.The thesis performed the analysis and design of the automatic guided vehicle,which bases on the project of Company A and relevant references at home and abroad.Main contents of this paper are as follows:The project called for the design of a heavy-duty automatic guided vehicle for the transport of aircraft parts,which was required to have a maximum load capacity of 50 T.not easily disturbed.At the same time,aircraft parts have strict requirements for smooth transportation,so a modular design wheelset is given,which can adapt to the inclination of the Heavy duty AGVs on the road.The wheelset utilizes a balanced axle frame that allows it to adapt to road inclinations of±4°,adopts differential steering technology,can be rotated ±100°,and comes with its own Lifting capacity,lifting stroke 220 mm,real-time monitoring of each wheel set during lifting and lowering(accuracy 0.1mm).Compensated for each other by multiple hydraulic suspensions with fluid-hydraulic communication to prevent tilting and potholes caused by different lifting speeds.A suitable body structure was designed,hydraulic lifting system and safety devices were selected.The modeling of the automatic guided vehicle was done using 3D modeling software.A static analysis of the frame and wheel sections of the designed heavy-duty automatic guided vehicle was carried out using finite element analysis software,where the frame material The maximum force is 80.743 MPa and the maximum displacement is 3.9284 mm.More,the safety factor n is not less than 2,the overall maximum displacement does not exceed 0.0963 mm,the rigidity and strength of the guide car Meet the requirements.Modal analysis is used to verify the safety of the guided vehicle in operation,to ensure that resonance does not occur and to lay the groundwork for subsequent optimizations.The topological optimization of the frame structure of the automatic guided vehicle is carried out for both acceleration and cornering conditions,and the frame structure is optimized according to the actual conditions.The response surface optimization method is used to optimize the frame crossbeams,longitudinal beams,and Deck size optimized to reduce the maximum equivalent force by 6.92% and increase the maximum displacement by 6.92% overall.5.44%,17.93% mass reduction,which greatly reduces the weight of the frame without reducing the safety of the frame.The movements and modes of the guide car were also analyzed according to the layout of the guide car structure,and the path arrangement and the movement parameters of each wheel set were clarified.relationship between the two,and the form of the motion using in-situ steering was determined.The driving equations were written and simulated accordingly.The results show that the structural design is reasonable and the overall design scheme is feasible.