CN210484409U - Cylindrical roller bearing of wind power speed increasing box - Google Patents

Cylindrical roller bearing of wind power speed increasing box Download PDF

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Publication number
CN210484409U
CN210484409U CN201821999665.8U CN201821999665U CN210484409U CN 210484409 U CN210484409 U CN 210484409U CN 201821999665 U CN201821999665 U CN 201821999665U CN 210484409 U CN210484409 U CN 210484409U
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CN
China
Prior art keywords
inner ring
rolling body
retainer
pocket
wind
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Active
Application number
CN201821999665.8U
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Chinese (zh)
Inventor
肖长春
赵扬
徐猛
田琳
苍施良
马建阳
孙晓旭
杨金雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wafangdian City bearing group wind power Bearing Co.,Ltd.
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Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
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Priority to CN201821999665.8U priority Critical patent/CN210484409U/en
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Abstract

The utility model relates to a be applied to wind-powered electricity generation trade bearing, specifically relate to a wind-powered electricity generation increaser cylinder roller bearing who is used for a last stand wear and tear of wind-powered electricity generation gear box. The rolling bearing comprises an inner ring, an outer ring and a retainer arranged between the inner ring and the outer ring, wherein the inner ring is provided with an inner ring raceway, and a rolling body is arranged in a pocket hole of the retainer; the position of the central point of the rolling body is different from the position of the center of the pocket hole of the cage; the end face of the rolling body adopts a spherical base surface structure, so that the angle change between the rib of the inner ring and the raceway is increased, and the lubrication is increased, so that the abrasion between the inner ring and the moving body is reduced; meanwhile, the eccentric arc pocket structure is adopted for keeping, so that the abrasion between the moving body and the retainer is reduced; the effect of wear resistance of the bearing is achieved as a whole.

Description

Cylindrical roller bearing of wind power speed increasing box
Technical Field
The utility model relates to a be applied to wind-powered electricity generation trade bearing, specifically relate to a wind-powered electricity generation increaser cylinder roller bearing who is used for a last stand wear and tear of wind-powered electricity generation gear box.
Background
The wind power gear box is a very important part in the whole wind turbine, is positioned between a wind turbine main shaft and a generator and has the function of converting the low rotating speed of a wind turbine into the high rotating speed required by the generator. Due to the huge difference between the rotating speed of the wind wheel and the rotating speed of the generator, the gear box becomes an indispensable component in the double-fed wind generating set. In the running process of the wind driven generator, the stress condition of the wind wheel is extremely bad, the wind wheel needs to continuously run under the condition of sudden change, namely load, and various loads borne by the wind wheel are directly transmitted to the gear box through the main shaft. The gear box is loaded badly, and the damage rate is at the top. Thus being different from a common gearbox in design, manufacture and maintenance and ensuring a service life of 20 years.
According to application practices at home and abroad, the bearing is one of the weakest links in all parts of the gear box, so that the parts of the bearing are particularly important in the aspects of structural design, manufacturing and the like. Wherein the wear resistance of the bearings of the gearbox during operation has been an important aspect of research.
Disclosure of Invention
In order to overcome the performance of bearing in complicated operational environment, improve the wearability of bearing, the utility model provides a wind-powered electricity generation acceleration rate case cylindrical roller bearing stand wear and tear.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a cylindrical roller bearing of a wind power speed increasing box comprises an inner ring, an outer ring and a retainer arranged between the inner ring and the outer ring, wherein the inner ring is provided with an inner ring raceway, and a rolling body is arranged in a pocket hole of the retainer; the position of the central point of the rolling body is different from the position of the center of the pocket hole of the cage;
the retainer pocket is divided into a left retainer pocket and a right retainer pocket, and a central point of the left retainer pocket is located at the right position of a radial axis where the rolling body is located; the center point of the right side of the cage pocket is positioned at the left side position of the radial axis where the center point of the rolling body is positioned;
the technical scheme that the centers of the cage pockets and the rolling bodies are not in the same position is adopted, so that the contact between the rolling bodies and the pockets is changed from surface contact into line contact, and the abrasion between the rolling bodies and the cage is reduced;
the end face of the rolling body is in a spherical base surface shape, so that the contact between the inner ring flange and the rolling body is point contact, the contact width between the inner ring flange and the spherical base surface of the rolling body is narrowed, and meanwhile, the angle between the inner ring flange and the raceway is enlarged, so that lubrication is increased, and the abrasion between the inner ring and the rolling body is reduced.
The beneficial effect of adopting above-mentioned technical scheme is:
the end face of the rolling body adopts a spherical base surface structure, so that the angle change between the rib of the inner ring and the raceway is increased, and the lubrication is increased, so that the abrasion between the inner ring and the moving body is reduced; meanwhile, the eccentric arc pocket structure is adopted for keeping, so that the abrasion between the moving body and the retainer is reduced; the effect of wear resistance of the bearing is achieved as a whole.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
Fig. 2 is an enlarged view at I of fig. 1.
Fig. 3 is a schematic view of the structure of the retainer.
FIG. 4 is a schematic view of the rolling elements in the pockets of the cage.
In the figure, 1, a cage pocket 2, a cage pocket left side 3, a cage pocket right side 4, rolling elements 5, a cage pocket right side center point position 6, a cage pocket left side center point position 7, and rolling element center point positions.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in the figure, the cylindrical roller bearing of the wind power speed increasing box comprises an inner ring, an outer ring and a retainer arranged between the inner ring and the outer ring, wherein the inner ring is provided with an inner ring raceway, and a rolling body 4 is arranged in a retainer pocket 1; the position 7 of the center point of the moving body is different from the position of the center of the pocket hole of the retainer;
the cage pocket is divided into a left cage pocket 2 and a right cage pocket 3, and a central point 6 on the left side of the cage pocket is located at the right side of a radial axis where the rolling body is located; the central point 7 on the right side of the cage pocket is positioned on the left side of the radial axis where the central point of the rolling body is positioned;
the technical scheme that the center point of the cage pocket and the center of the rolling body are not in the same position is adopted, so that the contact between the rolling body and the pocket is changed from surface contact into linear contact, and the abrasion between the rolling body and the cage is reduced;
the end face of the rolling body is in a spherical base surface shape, so that the contact between the inner ring flange and the rolling body is point contact, the contact width between the inner ring flange and the spherical base surface of the rolling body is narrowed, and meanwhile, the angle between the inner ring flange and the raceway is enlarged, so that lubrication is increased, and the abrasion between the inner ring and the rolling body is reduced.

Claims (2)

1. The utility model provides a wind-powered electricity generation acceleration rate case cylindrical roller bearing which characterized in that: the rolling bearing comprises an inner ring, an outer ring and a retainer arranged between the inner ring and the outer ring, wherein the inner ring is provided with an inner ring raceway, and a rolling body is arranged in a pocket hole of the retainer; the position of the central point of the rolling body is different from the position of the center of the pocket hole of the cage; the end surface of the rolling body is in the shape of a spherical base surface, and the contact between the inner ring flange and the rolling body is point contact.
2. The cylindrical roller bearing of the wind power speed increasing box according to claim 1, characterized in that: the retainer pocket is divided into a left retainer pocket and a right retainer pocket, and a central point of the left retainer pocket is located at the right position of a radial axis where the rolling body is located; the central point on the right side of the cage pocket is positioned at the left side of the radial axis where the central point of the rolling body is positioned.
CN201821999665.8U 2018-11-30 2018-11-30 Cylindrical roller bearing of wind power speed increasing box Active CN210484409U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821999665.8U CN210484409U (en) 2018-11-30 2018-11-30 Cylindrical roller bearing of wind power speed increasing box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821999665.8U CN210484409U (en) 2018-11-30 2018-11-30 Cylindrical roller bearing of wind power speed increasing box

Publications (1)

Publication Number Publication Date
CN210484409U true CN210484409U (en) 2020-05-08

Family

ID=70508109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821999665.8U Active CN210484409U (en) 2018-11-30 2018-11-30 Cylindrical roller bearing of wind power speed increasing box

Country Status (1)

Country Link
CN (1) CN210484409U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340262A (en) * 2018-11-30 2019-02-15 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Wind power speed-increasing gearbox cylinder roller bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340262A (en) * 2018-11-30 2019-02-15 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Wind power speed-increasing gearbox cylinder roller bearing

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20210114

Address after: 116300 Zhuhua Industrial Park, Wafangdian City, Dalian City, Liaoning Province

Patentee after: Wafangdian City bearing group wind power Bearing Co.,Ltd.

Address before: 116300 Wafangdian Bearing Industrial Park, Dalian City, Liaoning Province

Patentee before: WAFANGDIAN BEARING GROUP NATIONAL BEARING ENGINEERING TECHNOLOGY RESEARCH CENTER Co.,Ltd.

TR01 Transfer of patent right