Finite Element Analysis And Optimization Design Of Mechanical Structure Of Single Rope Dual-drum Winding Hoisting Machine

Mine hoist is widely used in mining industries of coal, nonferrous metal, and ferrous metal and so on. As the key machinery in mining system, mine hoist which is called"throat equipment"bears lifting minerals, materials and equipments. The technical performance of hoist which is paid great attention to has direct influence on mine production efficiency and miner's life safety. As main shaft unit of the key part of hoist, the dynamic forced state, real load spectrum and some design coefficients can't be determined at present and some structures can't be evaluated completely and correctly, so modern design methods are needed urgently to reflect global stress and strain distribution of hoist. Traditional calculation method of the strength and stiffness of main shaft device is analytical method, which ensures structural strength and stiffness by increasing safety coefficient can only calculate roughly and just obtain local stress, displacement, strength and stiffness. However, global structural stress and strain distribution can be calculated quickly, correctly and intuitively by finite element software. Meanwhile, detail optimization can be realized through the use of finite element software, which is non-comparable to traditional calculation method.Study of this paper is as follows:1) The main shaft device of 2JK single rope winding mine hoist is studied in this paper. The modeling, solution and post-processing of the main shaft device are realized by Pro/E, HyperMesh and ANSYS software and so on.2) The optimization of manhole structure which has stress concentration phenomena is analyzed. On the premise of without changing the shape of the manhole of the original structure, the authors calculate it after changing manhole location, then obtain the distribution of the stress surrounding the manhole, which compared with the results of the original structure, it can draw the conclusion that the difference of the stress surrounding the manhole relate to the changing of the distance from the manhole to center,. While changing the shape of manhole, it has analyzed the drums'stresses and strain when separately using the waist-shaped hole, round hole, ladder hole, ellipse hole and sector hole.3) In order to increase the capacity of rope quantity, raise lift height of mine hoist , the method of increasing the length of main shaft and the width of drums is taken.Then the author calculates and analyzes the the force states .Compared with unchanged, the conclusion has certain theoretical guiding significance for the design and application of mine hoist.In this paper some useful conclusions are achieved by finite element simulation and optimization of the main shaft device, which provide a basis for the design of main shaft device and have great significance in engineering application. The results also prove that the use of finite element analysis software can greatly reduce design time, improve the design efficiency and have important engineering value to study lifting equipments by means of finite element analysis software.