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Through in-depth research, this paper presents the first railway rescue crane 2888t · m elliptic cross-section boom design, and boom assembly for the program launched on the detailed design. After checking the traditional theory after verification, with powerful finite element analysis software ANSYS Workbench for boom three-dimensional solid modeling and mechanical properties checked. And through the use of its modeling, structural analysis and optimization of these three seamless interface between modules, the boom the finite element optimization. First, the thesis of domestic railway construction and railway rescue crane made some presentations and contrast, by comparing it leads to the significance of this thesis. Depth study of the structure and the railroad boom truck crane jib crane rescue and fully digest the basis of two key technologies, proposed railway rescue 2888t · m telescopic boom crane three categories elliptical cross section design. Secondly, the paper Elliptic boom section for a detailed design. Each boom assembly local structure have been well thought out. The load, through careful study of the various railway rescue crane working conditions and load cases, identified 12 kinds of typical conditions. Condition is determined, they will have been calculated as part of the boom assembly critical dimension parameters. Again, in the conditions and parameters determined, the paper crane traditional theoretical calculations. Harsh conditions imposed load on the jib crane checking calculations strength, stiffness and stability. As the traditional theoretical calculations sketchy, various simplifying a lot, calculation accuracy is not high, especially at the local stress slider is difficult to calculate, so this paper, the railroad boom crane rescue the finite element analysis, is currently used in a limited maturity element analysis tool-ANSYS Workbench. Established in ANSYS Workbench assembly jib assembly model, and through meshing, loading, solving and post-processing steps of a complete finite element analysis of 2888t · m jib crane rail rescue two of the most harsh working conditions were mechanics analysis. Finally, in the finite element check is passed, through the study found, the boom strength rigidity there is still much room. Therefore, in order to improve the crane lifting performance, this paper carried out in-depth finite element structural optimization. Checking in finite element structural analysis, the factors that influence the performance of the crane lifting key size parameters, these parameters will be optimized as optimization variables, and finally to the crane used to meet the performance under the premise of the lightest weight.
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