General Overhead Crane Structure Theory Modeling Cad System Development

At present, the market has all kinds of mechanical CAD software, the crane is no exception. However, the software has its own focus, and each has its distinctive features and advantages, did not set a variety of specialized functions in one system software, particularly in the crane industry, the demand for the software category more urgent. The bridge crane having a large market, therefore, developing bridge crane CAD system software is imminent.Through all parts of the analysis of the common bridge crane CAD system software functions and features, the software is divided into the following components: Input Module, geometry calculation module, structural analysis and theoretical modeling, optimization design module, visual design module, 2D graphics module of parameters, three-dimensional modeling modules, structural calculations brochures modules, such as finite element analysis module. The paper is researched on the importation of modules, structural analysis and theoretical modeling and 2D graphics module parameters. In the importation of modules, to provide data files and dialog two input methods, structural analysis and theoretical modeling module, through the preparation of a series of the function of structural calculations and checking to determine the objective function and constraints for the optimal design module; In two-dimensional parameters graphics, SCR generated by an order document interface, then calls the driver AutoCAD drawings.In this paper, the Windows operating system, VC++ language development tools, AutoCAD graphics support software, completed the bridge Crane part of the CAD system software development. In the design of the software, Will the newly revised "Crane design specifications" to limit state law and positioning accuracy / improve the level of control system / static stiffness introduction of a crane structural design, calculation and optimization of procedures through the results can be drawn limit state law than the allowable stress design showing a More economic and practical advantages of saving energy and reducing consumption of the crane is of great significance, should be vigorously applied.In this paper, the ideas and methods can be applied to other types of cranes in the CAD system software development, which could be all kinds of cranes CAD system software into complete crane CAD system software, to meet greater market demand.