| In recent years,aerial vehicles have been widely used in some fields of aerial operation,such as architecture,gardens,fire fighting,shipbuilding,airports and so on.For aerial vehicles,one of the most basic safety performance indicators is stability.The dangerous accidents caused by the loss of stability in the working process are everywhere,which not only causes serious damage to the working vehicle itself,but also poses a great threat to the life of the staff.Therefore,the most important task for aerial vehicle is to solve its stability problem.This paper studies and analyzes the stability of a straight arm aerial vehicle developed by a company,and puts forward some concrete measures to improve the stability of the aerial vehicle.The 3D model of aerial vehicle is drawn by using 3D drawing software SOLIDWORKS first,and the necessary simplification of the model is carried out on this basis,and then according to the national standard.With the help of ADAMS simulation software,the dangerous working conditions of aerial vehicle are simulated.Dangerous working conditions include maximum height working condition,maximum horizontal extension working condition,maximum underground extension height working condition.The calculation conditions are divided into horizontal plane,inclined plane and horizontal operation.The software is used to extract the centroid moving track of each component and the supporting reaction force of the ground to each tire,so as to judge the stability of the working vehicle.Basis Through simulation and comparison,the reasonable weight quality is determined according to the problem of insufficient stability of the whole machine.After topological optimization and lightweight design of the telescopic arm by ABAQUS software,the model is reconstructed by reverse reconstruction method.By properly increasing the weight of the counterweight and optimizing the topology of the telescopic arm,the volume of the telescopic arm is reduced to 70%,and the stress and deformation of the telescopic arm are within an acceptable range.The ground support to the four tires can also reach 1300 N.minimum While improving the stability of the working vehicle,the use of materials is reduced.It not only helps to improve energy efficiency,but also plays an important role in reducing production costs. |
