Analysis And Research On The Structural Performance Of The Telescopic Boom And Leveling Mechanism Of Aerial Work Platform

Aerial is one of the key equipment for high-altitude construction work,In municipal engineering, industrial installations, ship construction, equipment maintenance and other areas are being more and more applications,With its excellent performance, has become one of the fastest growing private cars of domestic。Firstly, the basic structure of aerial vehicles, classification a brief introduction,And the main difference between the current domestic and foreign technology in aerial vehicles were compared。Then look at the technology gap, the contents of the proposed research topic,That is the main working parts telescopic aerial vehicles to optimize and study of one of its key technologies leveling system。In order to better compare the gap between domestic and foreign technical aspects of aerial vehicles,This paper selects some of the major foreign manufacturers of high-altitude operations conducted technical analysis of typical products,And with the major domestic manufacturers of aerial work a technical comparison of typical products。The second chapter introduces the structure of the first aerial vehicles telescopic arm,And gives its calculation model and have two dangerous working conditions in the model,According to dangerous working conditions on the strength of the telescopic arm has been designed and arm were calculated deformation,Then telescopic boom in ANSYS finite element analysis,Verify the calculation of the theoretical calculation of the stress deformation and boom boom,While the vibration mode analysis carried out boom, the actual design to provide a referenceThe third chapter first Aerial Work bucket leveling mechanism commonly introduced, By leveling mechanism currently used to analyze contrast, gives the advantage of using electro-hydraulic proportional leveling technology,Given the force through MATLAB simulation curves and leveling cylinders leveling cylinder design calculations, provides the basis for the selection of cylinder,Then swap the hydraulic system level institutions were introduced, expounded the basic working principle of the hydraulic systemThe fourth chapter introduces the existence of the dynamic characteristics of existing hydraulic leveling system problems,Then in the model established in AMESim hydraulic leveling system, and gives a solution from the hydraulic aspects of the response time is long, the time lag of the program。This chapter is presented accumulator scheme orifice program, three programs long pipeline plan。And these three programs were AMESim simulation contrast, analysis of the dynamic characteristics of the performance of their respective programs,And gives reasons for selecting accumulator scheme, then according to the model data and field work platform debugging parameters analyzed problems and their solutions.The fifth chapter first formula is deduced based on experience how to select the accumulator, Identified two important parameters accumulator selection: recharge pressure and gas volume,By AMESim simulation platform on how to optimize the choice of these two parameters of the simulation, and finally identified two parameters optimized by simulation results,Through this optimization parameters were selected for the accumulator,That can make the hydraulic system has good stability and speed of response, but also improve the energy efficiency of the hydraulic system and prolong the working life of the accumulator.Finally, the full text of the content of the work were summarized, and follow-up were discussed.