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Double-row self-aligning roller bearing and main shaft support device for wind generation equipped with same

A roller bearing and self-aligning technology, applied in the direction of roller bearings, sliding contact bearings, rolling contact bearings, etc., can solve the problems of small deformation energy, easy peeling, and weak substrate adhesion.

Active Publication Date: 2021-04-09
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the DLC film generates a huge internal stress when the film is formed, in addition, it has high hardness and Young's modulus, on the contrary, the deformation energy is extremely small, so the adhesion to the substrate is weak, and it is easy to peel off, etc. shortcoming

Method used

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  • Double-row self-aligning roller bearing and main shaft support device for wind generation equipped with same
  • Double-row self-aligning roller bearing and main shaft support device for wind generation equipped with same
  • Double-row self-aligning roller bearing and main shaft support device for wind generation equipped with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3、 comparative example 1～5

[0087]Drying was carried out after ultrasonic cleaning of the substrate shown in Table 1 with acetone. After drying, it is attached to the UBMS device, and the base layer and a mixed layer are formed under the formation conditions. On it, a DLC film as a surface layer is formed under film formation conditions shown in Table 1 to obtain a test piece having a hard film. Further, the "vacuum" in Table 1 is a vacuum degree in the film formation chamber in the above apparatus. The resulting test piece was supplied to the rolling sliding test using the double cylinder tester shown below. The result is also recorded in Table 1.

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Abstract

Provided are a double-row self-aligning roller bearing and a main shaft support device for wind generation equipped with this roller bearing, wherein frictional wear of a lubrication surface is prevented even when contacting another member under conditions accompanying slipping in a state of poor lubrication, thereby achieving excellent long-term durability. In the double-row self-aligning roller bearing 5 a hard film 18 is a film having structure comprising an underlayer formed directly on a sliding surface of at least one bearing member selected from an inner ring 11, an outer ring 12, and rollers 13a and 13b, a mixed layer formed on the underlayer and mainly comprising WC and DLC, and a surface layer formed on the mixed layer and mainly comprising DLC. The hard layer 18 is used under a condition of sliding contact with another bearing member, with boundary lubrication, and the hydrogen content of the mixed layer is less than 10 at%.

Description

Technical field[0001]The present invention relates to a multi-column automatic calorie roller bearing applied to a bearing high load, for example, a bearing such as a spindle of a wind turbine, and a wind power generating spindle support device including the multi-column automatic calorie roller bearing, in particular A multi-column automatic calorie roller bearings containing diamond carbon are formed on the surface and a wind power generating spindle support device including the multi-column automatic calorie roller bearing.Background technique[0002]The hard carbon film is generally referred to as a diamond carbon (hereinafter, it is rejected as DLC. In addition, the film / layer of DLC is also referred to as DLC film / layer.) Of the hard film. In addition, hard carbon also has a variety of rigid non-crystalline carbon, amorphous carbon, hard non-fixed carbon, I-carbon, diamond carbon, etc., but these terms have not clearly distinguished.[0003]The essence of DLCs using such a ter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C23/08F16C17/10F16C19/38F16C33/12F16C33/58F16C33/66
CPCF16C23/086F16C2206/82F16C2206/04F16C2360/31F16C33/80F16C19/385F16C33/36F16C33/62Y02E10/72F16C17/10F16C23/08F16C33/12F16C33/66F16C33/585F16C19/38
Inventor 中西雅树三上英信
Owner NTN CORP