Structural Design,Analysis And Optimization Of The Metro Door System Comprehensive Test-bed

The metro door system as the key components of urban rail vehicle,its performance directly determines the operation of the train.In order to ensure the design of the door system performance can meet the requirements,need to test door system performance.But at present both at home and abroad in the door system performance testing test,only one-way single point and one-way multi-point loading,cannot bidirectional loading and tilt simulation.In order to fill this gap,according to the features and performance requirements of detection of metro vehicle passenger compartment door,design a comprehensive test-bed for metro door system performance testing from the view of economy,the feasibility.This paper first according to the design index and function of the test-bed,put forward the technical scheme of the tilt simulation mechanism,loading mechanism,drive and control system of the test-bed,and focus on the design of the tilt simulation mechanism.Combined with the principle of the parallel mechanism,put forward four schemes of tilt simulation mechanism,discusses and analyzes the mechanical characteristics and motion characteristics,the design scheme of the mechanism is determined,and completed the necessary mechanism kinematics analysis.Secondly,according to the overall scheme of the test-bed,the three-dimensional design is completed by using CATIA software,and completed institutions frame design include the tilt simulation mechanism and a bidirectional loading mechanism,loading and deformation resistance of closed mechanism.In order to realize bidirectional loading,put forward the design scheme of the deformable door frame and complete the three-dimensional design.In order to make the whole mechanical system safe and reliable,the key components of the test-bed are selected and the static strength is theoretical analyzed.Finally,using ANSYS and HyperMesh finite element analysis software,the static strength analysis of the key components of the test-bed is completed by finite element method,the strength analysis results meet the requirements and verify the feasibility of the design.And designed the bidirectional coordinated loading connection device with size optimization and topology optimization.After optimization,the design meets the strength requirements and the quality is reduced,which can achieve the purpose of lightweight design.