| Mine hoist is the critical equipment in mine transportation. It is an important tool that keeps in touch with underground assignment. Its status is directly related to the normal production and staff security. The traditional static design method is mainly used in domestic hoist design, which causes a larger basic structural parameters and a longer design cycle to make it very difficult to new generation of products and saving materials. We can often see the premature failure of some parts due to some design problems. Therefore, the traditional design method will be faced challenges. The modern design methods which should aim at the international development trend and design a new hoist which have a superior performance are required to meet the needs of mining industry by market competition. However, in the current winding hoist computer-aided design, hoist manufacturers and research institutions also remain in the level of the finite element analysis to individual components, structural parameter optimization, as well as the selection of equipment design and calculation. It is still relatively lacking in research of overall optimization to both the reel structure and the hoist shaft and system analysis of CAD. Due to the main shaft device of winding-type hoist which has complex structure, multi-condition and the larger amount of computing and graphics, we need to make breakthrough and improvement to optimize the research of the whole CAD winding hoist.The main shaft device is a key component of hoist, it plays a very important role in storing wire rope, bearing load and transferring power. According to the theories and practices, reel is the relatively weak component. Currently a calculation of shell strength under the rigid supported wheel cylinder has been researched with more detailed study, when the calculation of the shell and supporting wheel under the elastic support also need to study further.In this paper, through a in-depth analysis of the existing calculation of the stress cylinder shell ,it pointed out the deficiencies in existing formula of the calculation, and applied the theories and perspectives in systems engineering, establish a new flexible support structure, key components reel drum shell, the calculation of the mechanical model of wheel support through the analysis and research of the hoist main shaft equipment as a whole system, a serious and careful theoretical analysis of the stress and deformation of flexible elastic foundation beam theory, the plane stress problem of elasticity and shell bending theory of winding the key components hoist cylinder shell, support wheel and the main shaft device, According to the distortion harmonized conditions of shell and support wheel for a systematic derivation of the formula, formed a more accurate formula for calculating the stress. Based on the modern design methods of object-oriented technology, modular technology and database technology which the idea of software engineering using, which developed the computer-aided design system of winding hoist, and make an adaptive design to the hoist based on the original standard series of products. In the optimization module of the hoist CAD system, the mathematical model is established which aim at a main shaft equipment weight of the lightest and the smallest reel stress between the two rounds of the drum through a multi-constraint condition and thus in line with engineering problems using modern mixed discrete variable optimization design method (MDOD) to design, optimized structural parameters of spindle device and determined the best position to support wheels, so that spindle structure is more reasonable and reliable. Based on the comparison of the advantages and disadvantages in the development model of various professional mechanical CAD, the databases of steel wire rope, electric motors, reducers, couplings, bearings, high strength bolts are established used parametric mapping principle, and optimized the results as input to achieve the automatic generation of the drawings of winding hoist installations. It used object-oriented Visual Basic as language, Windows as an application platform, and AutoCAD as a graphical support system, SQL server as the underlying data supporting system, completed the system integration from program design to the integration of technical design of CAD software. The host language of Software system is the window design language Visual Basic, with SQL Server as the database management system, which have the characterizes of developing fast, the visual process of software design, fully embodying the characteristics of modern software technology. In this paper, computational mechanics model and the optimization mathematical model are established by the research of the new flexible support structure, hoist shaft winding device and its key components of the study and the application of mechanics and optimization theory, it proposed the design methods and optimization ideas of the new hoist drum structure, it also achieved the integration and unity of the program design, standard parts selection calculations, engineering drawings, design of winding hoist CAD design method which has a strong adaptability.The completion of this paper improved the theory of hoist design, made design and calculation more accurate, attained reasonable structure, and made the product safer and more reliable. This paper also made the hoist attain further development of computer-aided design, greatly reduced the workload of the design, reduced the cost of manufacture and use, shortened the cycle of new product development and improved design efficiency, which has great prospects for promoting and using in the hoist industry. The study in this paper can be widely applied to various types of shells containing cylinder mining machinery, engineering machinery, construction machinery and some other areas. The result not only improved the safety and reliability of the product, but also improved product quality and extended the life of the product, which has obvious economical and social benefits.
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