| Belt-conveyor system is the most important transport equipment which can carry bulk material. Belt-conveyor Pulley is the key transmission part in Belt-conveyor system. It has two functions, one is transferring power, and another is altering the operation direction of the belt. The design quality of Belt-conveyor Pulley connects with systems security and reliability of the whole conveyor. At present, in our country, the design of the pulley usually adopts the approximate formula, however, pulley that be designed out with such method can not meet the need of manufacture, its security and reliability are difficult to guarantee. While lacking the suitable calculation method of strength and stiffness about the pulley, if we increase the safe coefficient without enough reasons, the pulley become bigger and heavier. However the reliability of the pulley can't be increased.The main content includes the following respects: Firstly, the paper discusses structural design and calculation of the belt conveyor pulley. The related formulas are corrected and a complete design and calculation method are provided. Secondly, geometry modeling is built by bottom-up method, which is processed by the sequence of point, line, surface and solid. The pulley is done by solid units. In order to improving the precision, the mapping grid method is carved up. After disperse the load on the pulley surface, we added the points load on the pulley node. The post processor of the ANSYS software analyzes the stress and strain of each part. Thirdly, this paper introduces how to develop a calculation program by APDL language on the base of ANSYS system, and how to develop the interface of this program by UIDL language, all these program's surfaces were built base on ANSYS system. Finally, the CAD system of the pulley come true, using VC++ language and base on AutoCAD.The design methods and calculation program in the paper are very important to the designer, and can shorten the design cycle and improve working efficiency. |
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