Rotary ring bearing structure

Abstract

A slewing bearing structure comprises:an outer ring (4) having first and second circumferential outer grooves formed on an inner circumferential surface in parallel;an inner ring (5) provided on an inner side of said outer ring section and having first and second circumferential inner grooves formed on an outer circumferential surface in parallel in correspondence to said first and second circumferential outer grooves of said outer ring section (4);a first row (6) of rolling elements provided in said first circumferential outer groove of said outer ring (4) and said first circumferential inner groove of said inner ring (5); and a second row (7) of rolling elements provided in said second circumferential outer groove of said outer ring (4) and said second circumferential inner groove of said inner ring ( 5 ) ,wherein said inner ring (5) rotates via said first and second rolling element rows (6, 7) around a rotation axis in a relatively opposite direction to said outer ring (4),wherein said outer ring (4) includesa first outer ring section (8) provided with said first circumferential outer groove; anda second outer ring section (9) provided with said second circumferential outer groove;wherein said inner ring (5) includesa first inner ring section (11) provided with said first circumferential inner groove; anda second inner ring section (12) provided with said second circumferential inner groove,wherein said slewing bearing structure further comprises a first pair of side plates (13), each plate of said first pair being fitted to a side circumferential surface of said first and second outer ring sections (8, 9), respectively, and / or a second pair of side plates (13'), each plate of said second pair being fitted to a side circumferential surface of said first and second inner ring sections (11, 12), respectively.

Description

technical field [0001] The invention relates to a rotating ring bearing structure, in particular to a double row rotating ring bearing structure. Background technique [0002] In order to protect the global environment, it is desired to use natural energy that is less burdensome to the environment. As a natural energy source, wind energy has a promising future. A windmill generator is a rotating machine that converts wind energy into electricity. As shown in FIG. 1 , the wind turbine generator includes a support tower, a wind turbine base 102 rotatably supported by the support tower, and an impeller base (rotor head) 103 rotatably supported by the wind turbine base 102 . A plurality of wings (three wings in this example) 104A, 104B, 104C are rotatably supported (the pitch can be freely changed) by the rotor head 103 via rotating ring bearings 105A, 105B, 105C, respectively. As shown in FIG. 2 , the rotating ring bearing 105B is formed by a non-rotating outer ring 106 on t...

AI Technical Summary

Problems solved by technology

Although it is described that the preload amount gradually increases with the insertion of rollers, it does not describe the preload amount for each row

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