Finite Element Analysis And Development Of The Practical Tools For Collapsible Boom Bridge Inspection Vehicle

Bridge inspection vehicles can provide a kind of bridge work platform for bridge inspectionpersonnel in the process of testing, equipped with bridge testing instrument, used for flowingdetection and(or) repairing operations as special purpose vehicle. It can move at any time, safe,fast and efficient to let inspectors into position operation for flow detection or repair operations.When it works, It won’t affect the traffic,and it can move slowly with Not withdraw boom.Simplifying the structure of beam by using the finite element method. Simulating thestructure of turntable, the main arm of the bridge and the vertical arm, telescopic arm, etc.Establishing detailed calculation model.Ensure the safety and reliability of their products by the computer automatically calculation,result analysis, select suitable materials, thickness of the late. This automatic calculation programestablished greatly save computation time, which makes the whole process from manualcalculation model, the mechanics calculation and analysis, the result processing, into a manualreduction model, the computer automatic cycle calculation, the results establish the applicationautomatic extraction, automatic mechanical calculation results and extraction. When comparedwith the traditional method, the new method saves about two-thirds of the time and ensure theaccuracy of the calculation model and the results at the same time.This calculation mainly use the finite element method, Hop on and off using separate analysismodel of synchronous calculation. Save calculation time. Improve the computational efficiency.Vehicle parts (boom and turntable) using professional software， Hypermesh-meshingprofessional software, ANSYS-finite element analysis software, under the vehicle part (auxiliaryframe and leg) mainly use PRO/E post-processing analysis module.Finite element analysis software ANSYS APDL language provides a line by line in theexplanatory programming language tools. Through this language, we realize the automaticassembly model automatic calculation and automatic extraction results.By mechanical test way, Choosing DH5908dynamic testing system, Choosing the key testpoint of the product, carrying on the strain data collection and measuring data after finishingcomparing with calculated values to verify the calculation and analysis results, and correctcalculation model.