Lifting Device for Hub of a ۴.۵ MW Wind Turbine

Publish Year: 1402
نوع سند: مقاله کنفرانسی
زبان: English
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ISME31_491

تاریخ نمایه سازی: 10 خرداد 1402

Abstract:

Rotor hub is one of the major components of the windturbine, which is subject to all the blade’s weight andwind loads. This component is utilized to connect therotor blades to the drive train. Lifting of the rotor hubwith hub cover should be carried out by a special tool inworkshop. The lifting tool should be modeled anddesigned according to the specified strength criteria byconducting the finite element (FE) analyses. The toolwas supposed to construct from the low-carbonstructural steel S۳۵۵JR, which is widely used in themanufacture of various structural and mechanicalcomponents. This material is a weldable steel withsuperior mechanical properties. Since the material isregarded as the ductile material, for the purpose of staticstrength analyses, the maximum shear strain energyhypothesis, i.e., von-Mises stress criterion was applied asequivalent stress to survey the failure condition andfinding the safety factor of the designed tool. The rotorhub’s total weight was estimated about ۵۰ tones. Therewere some FE analyses to attain the final modifiedmodel of lifting tool. The investigated models wererevised in such a way that the weak sections werestrengthened and the unnecessary materials (with lowstress values) were removed to reduce the tool’s weight.The final model with total weight of ۶.۵ tones and safetyfactor of ۲.۹ was obtained. The M۴۲-۱۰.۹ bolts withpreload of ۴۴۸ kN were selected according to the bolts’calculations.

Authors

Mohammad Mohebirad

Product Tools Design & Engineering Specialist, R&D Department, MAPNA Generator Engineering andManufacturing Co. (PARS), Karaj;

Eqlima Mahdavi

Head of Product Tools Design & Engineering, R&D Department, MAPNA Generator Engineering and ManufacturingCo. (PARS), Karaj;

Morteza Ghahremanlo

Product Tools Design & Engineering Specialist, R&D Department, MAPNA Generator Engineering andManufacturing Co. (PARS), Karaj;