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The gantry crane is an important material handling equipment , widely used in bridges , water conservancy , railway stations , ports , power plants and other production areas . With the development of China 's economy , it is not only occupies an important position in the national economy , is also expanding in the field of social production and life . The steel structure design is an important part of the crane system design , reasonable structure design can improve the performance of structural mechanics , improve resource utilization , has important practical significance . In this paper, the actual subject , a production for Jinan Yellow River Bridge, the main bridge lifting steel box girder with single beam gantry crane double hook for the study , the use of large finite element software ANSYS analysis tools , the crane the finite element model , its static strength, stiffness, stability analysis and modal analysis , come to the crane to meet the strength and stiffness requirements . The lifting system is used to achieve material vertical lift , gantry crane basic , is the most important part of the structural characteristics of the lifting mechanism and safety performance will be directly related to the safety and reliability of the whole job . Upgrade part and structural characteristics of the system from single girder gantry crane double hook starting to establish a finite element model of the spreader system to calculate the the spreader system structural strength and stiffness , the structure according to the calculated results of the spreader Department improvement on improved the spreader structure of the checking and improvement program increased to enhance system security . Finally , APDL parametric modeling using simulation software ANSYS optimization toolbox of the main beam of the crane structure optimized design , the weight of the main beam structure optimized to reduce 14.27% , and the main beam optimized static strength , static stiffness and stability checking , validation and reliability of optimization results . The results of this study show that , using ANSYS finite element software for finite element analysis and structural optimization can shorten the design cycle , reduce production costs , this study can provide a reference for similar products in the design and optimization of the actual project object .
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