A full complement spherical roller bearing for wind power
A technology of spherical rollers and rollers, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of large starting torque, large stress concentration, and small load bearing capacity
Active Publication Date: 2017-06-06
SHANDONG KAIMEIRUI BEARING TECH CO LTD
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- Application Information
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Problems solved by technology
Due to structural design reasons, the spherical roller bearing of this design has disadvantages such as large stress concentration at the rib 21 position of the inner ring, easy cracking at the rib position, small load bearing capacity, and large starting torque.
Method used
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Embodiment Construction
[0016] Specific embodiments of the present invention are described with reference to the accompanying drawings.
[0017] as attached figure 2 Shown: its parts of bearing of the present invention comprise outer ring 1, inner ring 2, roller 3, cage 4.
[0018] as attached figure 2 to attach Figure 5 As shown: the axial section of the cage 4 is a "7" profile, which is formed by one-piece stamping. The inner diameter distribution circle D1 of the cage is much smaller than the roller distribution center circle D2, and the diameter difference (D2-D1) is 0.5~ 0.7 times the roller diameter, the optimal diameter difference is 0.6 times the roller diameter. The inner diameter 44 of the small end of the cage extends to the inner side of the bearing along the normal direction of the nominal contact angle a to form a cone, and then extends outward along the inner end surface of the roller 3 to 0.2 to 0.3 times the roller rotation axis 34 The diameter (D) is optimally 0.25 times the ...
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A full-complement spherical roller bearing used for wind electricity is disclosed. The full-complement spherical roller bearing comprises following components: an inner ring, an outer ring, rollers and retainers. The inner ring is provided with two roller paths. The outer-ring roller path is a spherical surface. The rollers are symmetric spherical rollers. The full-complement spherical roller bearing is characterized in that: the retainers are formed by stamping cold-roll steel sheets with good quality; outlines of axial cross sections of the stamped retainers are 7-shaped; the retainers comprises roller installation holes, process chamfers, raised platforms, roller installation grooves, and other parts; a plurality of specific critical structures and parameters are optimized and designed; and through tests, the full-complement spherical roller bearing has advantages of high carrying capacity, long service lifetime, low pull-in torque, low energy consumption, high safety, and the like.
Description
technical field [0001] The invention relates to the technical field of bearings, in particular to a structural type of a full complement spherical roller bearing for wind power. Background technique [0002] Spherical roller bearings are mainly used in the main shaft of wind power equipment. The function of the main shaft of wind turbines is to support the hub and blades and transmit torque for the speed increaser. Spindle bearings mainly bear radial force and require good self-aligning performance, anti-vibration performance and smooth operation. Generally, spherical roller bearings with brass solid cages are used, such as figure 1 Shown: It is composed of outer ring 1, inner ring 2, roller 3, and brass solid cage 4. Due to structural design reasons, the spherical roller bearing of this design has disadvantages such as large stress concentration at rib 21 of the inner ring, easy cracking at the rib position, small load bearing capacity, and large starting torque. Content...
Claims
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IPC IPC(8): F16C33/46F16C33/34
Inventor 燕敬祥张士玉於先桥丁喜荣任庆华冯冰王天齐
Owner SHANDONG KAIMEIRUI BEARING TECH CO LTD