Structural Analysis And Optimization For A SPSL1214 Scissor Aerial Work Platform

Scissor aerial work platform is a kind of aerial work vehicle which can realize vertical lifting and falling.At present,its maximum working height can reach 22 meters,and it is widely used in aerial work.The scissor aerial work platform is mainly composed of chassis,scissor lifting device and upper loading platform.The structure of a scissor aerial work platform is compact and simple in structure and easy to control.The scissor lifting device realizes the purpose of vertical lifting and falling through the scissor movement of each arm,as a result that the scissor aerial work platform can be applied to the indoor and outdoor narrow space to complete various inspection,installation,maintenance,logistics and so on.In order to improve the performance of scissor aerial platform,this paper analyzes and optimizes the structure of scissor aerial platform by finite element method,all details of this paper are as follows:The research object in this paper is a kind of scissor aerial work platform and the type of it is SPSL1214.At first,the mathematical model of the scissor lifting device is built and its theoretical calculation is carried out to obtain the hydraulic cylinder thrust and the hinge point force.Secondly,based on APDL parametric modeling language of ANSYS software,the parametric finite element model of the whole scissor aerial platform is built.Through calculation,the finite element analysis results of the hydraulic cylinder thrust and the hinge point force of the scissor arms are obtained,and compared with the theoretical calculation results,these two results have good consistency.Then,the stress test of the arms with various typical working conditions is carried out,and the stress test results are basically consistent with the finite element analysis results.Finally,the finite element method is used to analyze the fatigue life of the parametric finite element model of the whole machine,and the corresponding structure of the scissor arms is optimized according to the analysis results.After the improvement,the service life of the scissor aerial platform is effectively improved.The research results of this paper provide a reliable calculation basis for the design and development of the scissor aerial platform.The method adopted in this paper shortensthe design cycle of the product and has important practical significance.