Stress Analysis of Bearings in Three Wind Power Gearboxes One of the biggest features of a wind turbine gearbox that differs from a normal gearbox is the irregularity of the load it bears. Taking the 1.5MW gearbox currently popular in China as an example, the general nominal power value is 1660KW, but the maximum power value in the load spectrum can generally reach about 5000KW, which is about three times the nominal power value. The reverse maximum power value can generally reach about 2 times the nominal power value, and they are often used to check the safety static load coefficient. In the case where the power value is much larger than the nominal power value, the probability of stress concentration of the bearing is greatly increased. This phenomenon is particularly prominent in the low speed intermediate shaft because the low speed intermediate shaft generally adopts a hollow shaft, the rigidity is relatively poor, and eccentricity is apt to occur. The situation, while eccentricity can exacerbate the occurrence of stress concentration. Figure IV, the intermediate shaft bearing is low when the value of 3 times the nominal power of the maximum force stress distribution roller, we can see that stress concentration is more serious, in order to avoid such stress concentration occurs, Timken ® bearing may This problem is solved by the special repair of the roller, as shown in Fig. 5, which is the stress distribution of the same bearing after the special roller repair under the same working condition. Figure 4: The distribution of the roller stress with the highest force at the 3 times nominal power value of the low speed intermediate shaft bearing Figure 5. Stress distribution of the same bearing after special roller repair under the same working condition The above is mainly for the application characteristics of wind turbine gearboxes. From the aspects of lubrication, bearing bearing area and stress concentration, several points that must be paid attention to in the selection and analysis of wind turbine gearbox bearings are introduced. I hope that this can be avoided. Some problems, thereby improving the reliability of the wind turbine gearbox and reducing the downtime of the wind turbine. Create a minimalist look in the bathroom with this versatile metal shelf. Pure and tasteful design defines this slender holder which goes perfectly in both modern and classic bathrooms. Metal Shelf,Metal Shelving Unit,Heavy Duty Shelving,Metal Rack Kaiping city Pinsen Sanitary ware Co.,Ltd , https://www.corpthen.com
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