Grease lubrication wind power compound planetary gearbox for bearings

Abstract

The invention relates to the technical field of wind power gearboxes, and relates to a grease-lubricated wind power composite planetary gearbox for bearings, which includes a box body, an NW planetary gear train and a fixed shaft, and is characterized in that the journals on both sides of the planetary frame are respectively supported by first and bearing bearings. In the inner holes of the front box and the rear box, there are first and second seals on both sides of the first bearing, and third and fourth seals on both sides of the second bearing; the two sides of the planetary wheel are respectively supported by the first and second sealed bearings In the holes on the two side walls of the planet carrier; the third and fourth sealed bearings at both ends of the final stage drive wheel are respectively supported in the inner holes of the large and small end covers; the fifth and sixth sealed bearings are respectively supported on the large and small end covers on both sides of the output gear shaft The inner hole of the small end cover; the sealed bearing is a contact radial sealed bearing, which has two types of single lip and double lip; the seal is a rotary shaft lip or car seal. Beneficial effects: the bearing runs reliably, so the reducer has a long service life and low noise.

Description

【Technical field】 [0001] The invention relates to the technical field of wind power gearboxes, and relates to a wind power composite planetary gearbox with grease lubrication for bearings. The novelty lies in that the rolling bearings in the box are lubricated with bearing grease and the meshing pairs of gears are lubricated with gear oil. 【Background technique】 [0002] Gearbox is one of the three core technologies of wind turbines. The executives of a large domestic company claim that the wind power gearbox produced has reached the satellite level and can guarantee normal operation for 20 years. [0003] However, "Development and Technical Analysis of Wind Power Gearboxes" (Mechanical Transmission 2008.06) pointed out that domestic gearboxes have been shut down for overhaul for less than 3 years. [0004] The present invention is the innovation of following background technology: [0005] "Compound Planetary Gearbox for Wind Turbine with Turbine Blades and Generator" (ZL...

AI Technical Summary

Problems solved by technology

[0015] (3) "Maintenance and maintenance of wind turbine gearbox bearings": "Operators boarded the plane and found that there were 2mm2 scaly iron filings and a large amount of metal powder in the filter; after the high-speed shaft bearing was damaged, the gear shifted, resulting in the tooth surface of the planet carrier. Damage due to abnormal meshing

[0041] The lower the speed, the longer the grease change interval

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