Three-dimensional Design And Performance Analysis Of Large-tonnage Bridge Crane Structure Parameterization

As the economic power of my country continuously growing, the industrialproduction scare expanding, the material handing and large equipmentmanufacturing in production process increase the demand of crane with highrequirement of demand and performance. The large scale, specialization,modularity, combination, light weight and diversity of the crane become thedevelopment trend. While the current state is that the design method used bymost enterprises is still two-dimensional graphic design. This method has heavyworkload and large repetition, waste time and energy, has less intuitive in designprocess and hard to find mistake. With the continuous improvement of thescience and technology, the three-dimensional computer aided design softwaresbecome the essential tool in design. It is easy to find the mistake and clear to seethe whole structure and uses advanced finite element method with numericalanalysis. All this advantages make the design have shorter cycle, lower cost andhigh quality.Using overhead crane as study object, this paper study the overhead cranebased on parameterized design method and computer aided design, researchingthe modular structure of the combination and parametric modeling ofmechanical properties. In combination with Access Database technology andstructure modularity technology, this paper establish the parameterized designsystem for large-tonnage overhead crane using Solidworks in Visual Basicprogramming language environment. It realizes the three-dimensionalparameterized modeling and finite element analysis for the structure of theoverhead crane. The designers only need to input necessary design parametersinto the visual interface, then the system will establish the three-dimensionalmodel and detect automatically whether the assembly is under interference.After the assembly meet the requirements, put it into Workbench of ANSYS, dostatic analysis firstly and check the static strength and static stiffness. Throughmodel analysis gets the natural frequency and figure modes, use which to avoidthe resonance of the structure. Then, study the transient dynamic analysis for bridge structure dynamic response of the impact load which is happens when theoverhead crane lift the full load, and get the change curve of the displacementchanging over time and the maximum displacement. Finally, do the stabilityanalysis for the main beam structure of the overhead crane and get the localbuckling form. The analysis system of parametric design and performanceanalysis developed by this study, can get the rational design of crane structurerapidly.The studies in this paper shorten the design cycle; improve the quality ofproduct and save the cost. It has certain value in engineering application.