Analysis of smooth and bearing area of ​​wind turbine gearbox bearings

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Analysis of smooth and bearing area of ​​wind turbine gearbox bearings

Source: China Bearing Network Time: 2013-07-07
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Bearings; one of the thinnest links in all parts of wind turbine gearboxes; proven in practice. Wind turbine gearboxes are subject to variable loads and strong gusts throughout the year; therefore, they are different in depiction, production and protection. Usually gearbox.
Following the continuous development of the fan drawing power; the wind power gearbox is on the premise of satisfactory transmission load; the volume must be able to do as much as possible. 亓 匦胍 匦胍 赡芮幔 赡芮幔 褂 褂 褂 褂 锏 锏 锏 锏 锏 锏 锏 锏 锏 因而 因而 因而 对 对 对 对 对 对 对Performing the necessary use profiling is an important way to ensure the reliability of the gearbox.
How to analyze the use of the bearing; to help improve the reliability of the wind power gearbox; to reach the stoppage time; improve the reliability of the wind turbine gearbox.
First, the smooth analysis of wind turbine gearbox bearings is well known; the input shaft speed of wind turbine gearbox is usually 10-20 rev / min, because the speed is relatively low; the input shaft bearing is also the oil film structure of the planet carrier support bearing is often difficult. Oil film The function is to separate the two metal touch surfaces when the bearing works; to prevent metal and metal from directly hitting the touch. We can introduce a parameter λ to characterize the smoothing effect of the bearing (λ is the ratio of the thickness of the oil film to the sum of the roughness of the two touch surfaces. If λ is greater than 1; clarify that the thickness of the oil film satisfies the separation of the two metal surfaces; the smoothing effect is outstanding, and if λ is less than 1, the thickness of the oil film is not sufficient to completely separate the two metal surfaces; the smoothing effect is not ambiguous. The work of the bearing; the bearing can have the damage shown in Figure 1. Because the wind turbine gearbox usually uses the smooth smooth oil of ISOVG320 viscosity; therefore, if it is found that λ is less than 1; we usually only pass the down bearing raceway and roll The roughness of the sub-section to improve the smoothing effect. Others; when the gearbox is depicted; the planet carrier supports the bearing to prevent one as much as possible Scale too bearing. Ridiculed guide real scratch τ plum governance carp-shaped Yi owe ⑾ purpose word so Ti Lu Qiong Hui Um juvenile scoop Po no cape Jia Luan ≈ upheld armed South boom Minamata really shallow 5 stop play turbulence ji tour sprouts ㄐ latitude.
Second, wind power gearbox bearing bearing area analysis In the working bearing roller usually only a little accept the load together; and this is the area of ​​the roller location we call the bearing bearing area. The bearing receives a large load.笮 笮 笮 笮 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若 若. In theory, as long as the torque is transmitted to the gearbox. In this case; after a brief analysis of the force; we can easily find that the load received by the planet carrier support bearing is relatively small; therefore, the bearing area of ​​the bearing is often compared.菀追(5)蚧.Currently; in the depiction of wind turbine gearboxes, the carrier support bearings usually use two single-row tapered bearings or two full-roller cylindrical bearings. We can reduce the cylindrical roller by properly pre-tightening the tapered roller bearings. The sub-bearing clearance method is used to improve the bearing area. Figure 2 shows the comparison of the bearing area before and after the cut.
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