Abstract:  Aiming at the problem of engineering checking calculation of tapered roller bearing used for pitch and yaw driver gear shaft of wind power, the simple beam algorithm and finite element simulation method were compared and analyzed. Firstly, the compulsory requirements of driver bearing in the wind power specification document were briefly introduced. And two methods of bearing checking, namely simple beam algorithm and finite element simulation were adopted. And the static load safety factor S0 and life L10h of the bearing are calculated through three engineering cases. The checking results were compared with the compulsory requirements. Finally, based on the finite element simulation method, the influences of preloaded quantity on the bearing safety factor, life and maximum shaft deformation were discussed. The results show that the simplified simply supported beam algorithm is not suitable for the verification of the drive gear shaft bearing, because it does not meet the mandatory requirements. The applicability of the finite element method is better. Considering the three factors of safety factor value, bearing life value and gear shaft deformation, it is recommended that the preload of the bearing is selected in the range of 0~0.35.

Key words:  wind power driver; tapered roller bearing; simple beam algorithm; finite element simulation; Romax; preloaded quantity

XU Yan-bo, GUO Yuan-yuan, JIA Song-yang. Checking of gear shaft bearing in design of wind power deflection driver［J］.Journal of Mechanical & Electrical Engineering, 2021,38(9):1160-1166.