Design Of Spider-type Aerial Work Platform And Its Structure Analysis And Optimization

Aerial work platforms are special equipment that carry operators and equipment to a specific location to complete high-altitude operations.They are commonly used in shipping,construction,electric power,and firefighting fields.With the advancement of urbanization,new application scenarios such as hotels,stadiums,airports,entertainment plazas,farms,forest fields and golf courses are increasingly demanding aerial work platforms.Considering the application scenarios comprehensively,the goal of this project is to design a spider-type hybrid boom aerial work platform with a maximum platform height of 20 m.In the actual application process,the force of the boom and the outrigger structure is complicated,and may be twisted,deformed,fractured,strength failure or resonance,etc.Therefore,this project comprehensively utilizes the methods of theoretical analysis and numerical simulation,takes the spider-type hybrid boom aerial work platform as the research object,and conducts systematic research on the static and dynamic design theory,dynamic analysis,and optimization design of the boom system.A telescopic spider leg is proposed,and the stability of the whole machine when the leg is working is studied.Firstly,according to the structural characteristics of the spider-type hybrid boom aerial work platform,the mapping model of the upper and lower arms of the folding arm and the analytical verification model of the boom mechanics are established,and the statics analytical verification is completed.Study the dynamic characteristics of the hybrid arm system,establish the mathematical model of the total kinetic energy and total potential energy of the hybrid arm system,and derive the dynamic equation of the hybrid arm system,which can accurately predict the vibration characteristics of the boom system.Vibration suppression lays the foundation.Secondly,the static and dynamic characteristics of the boom system are studied,and the finite element model of the telescopic boom system under two dangerous conditions is established to solve the stress distribution and total deformation of the boom structure under these two conditions.The stiffness meets the requirements.The first 6 vibration modes of the boom are extracted,and the analysis shows that it is not easy to resonate,which verifies the correctness of the theoretical model.Thirdly,the response surface method is used to establish the system response mathematical model of the boom,and the optimal design parameter solution set of the telescopic boom is obtained.The optimization results show that the total weight of the boom using the optimal parameter solution set is reduced by 28%,which provides an important theoretical reference for the lightweight,safe,and economical boom system.Finally,propose a retractable spider-type outriggers,and a stability verification model based on the Outrigger reaction and stability coefficients was established.The Matlab platform was used to process the two models to explore the stability of the whole machine during the rotation and luffing of the vehicle.The law of influence.The results show that the designed outrigger fully meets the stability requirements of the whole machine when working.