Key analysis of fan bearing skills
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Key analysis of fan bearing skills
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The yaw bearing assembly is a guarantee for the wind turbine to track the change of wind direction in time. When the fan starts to deflect, the yaw acceleration ε will have an impact torque M=Iε (I is the cabin inertia). The yaw speed Ω is higher; the acceleration ε is also higher. Large. Because I is very large; this makes the large impact of the original multiplied. Others; if the fan deflects during the movement; the yaw gear will accept a considerable gyro moment; simply form the fatigue failure of the yaw bearing .
According to the force characteristics of the fan bearing; the yaw bearing adopts the four-point contact ball bearing depicted by “zero clearanceâ€; the channel is uniquely depicted and processed; it can accept large axial load and moment load. The yaw gear should be selected appropriately. Data, modulus, tooth surface summing and hardness; to ensure the match between the life and the automatic gear. Together; to adopt a targeted heat treatment; improve the tooth surface strength; make the bearing have excellent wear resistance and resistance Impact.
The fan is exposed in the field; therefore, there is a severe demand for the sealing function of the bearing; it is necessary to optimize the depiction of the sealing method of the bearing; to simulate the sealing function of the bearing; to ensure that the bearing life is the same as the life of the fan. Installed at an altitude of 40m; the cost of assembly and disassembly is expensive; therefore, it is necessary to have very high reliability; usually 20 years of life is required; plus the bearing layout is messy; therefore, computer simulation experiments are necessary before the installation experiment; Bearing drawing parameters are correct.
2, wind blade spindle bearing (24044CC)
The main shaft of the blade is supported by two spherical roller bearings. Because the main shaft of the blade receives a very large load; and the shaft is long; simple deformation; therefore; the bearing needs to have an excellent centering function.
Determine the internal layout parameters of the bearing and the layout of the cage; make the bearing have outstanding functions and longevity.
3. There are many kinds of bearings in the transmission bearing transmission; mainly because the gear oil in the gearbox is smooth. There are more metal particles in the smooth oil; the bearing life is greatly shortened; therefore, a special heat treatment process is required; Compressive stress; the sensitivity of the falling raceway to the particulate impurities; the improvement of the bearing life. Together with the bearing conditions; the re-optimization of the bearing layout; improve the bearing processing technology; further improve the bearing's functional indicators.
4. The generator bearing generator bearing uses cylindrical roller bearing and deep groove ball bearing. After the layout of these two kinds of bearings, the improvement of the processing method, the cleanliness of the production process and the optimization of the associated components, the noise of the bearing oscillation is reduced. The bearing has an outstanding low noise function.
5, bearing installed experimental skills to study the bearing device after the practical function is not only related to the function of the bearing itself; and is also closely related to the bearing device operating conditions; therefore; the cooperation mode of the bearing device, the middle of the device in the middle of the device Discussion; so that the bearing can get better working function in practice.
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