CN218817591U - Four-point contact ball pitch-variable bearing with double rows of sealing rings rotating along with inner ring - Google Patents
Four-point contact ball pitch-variable bearing with double rows of sealing rings rotating along with inner ring Download PDFInfo
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- CN218817591U CN218817591U CN202223112098.9U CN202223112098U CN218817591U CN 218817591 U CN218817591 U CN 218817591U CN 202223112098 U CN202223112098 U CN 202223112098U CN 218817591 U CN218817591 U CN 218817591U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model belongs to the technical field of the bearing, a double sealing washer is all along with inner circle pivoted four point contact ball becomes oar bearing is proposed. The four-point contact ball variable pitch bearing with double rows of sealing rings rotating along with an inner ring comprises a bearing outer ring, a bearing inner ring, a steel ball, a retainer, an upper row of sealing rings and a lower row of sealing rings; the upper row of sealing rings and the lower row of sealing rings are of structures which rotate along with the bearing inner ring, namely, sealing ring mounting grooves for mounting the upper row of sealing rings and the lower row of sealing rings are formed in the outer diameter surface of the bearing inner ring; the inner diameter surface of the bearing outer ring is provided with a sealing ring attaching lip matched with the upper row of sealing rings and the lower row of sealing rings. The utility model discloses effectively avoid fan connecting piece and sealing washer position to interfere, solved the problem of sealed difficult change.
Description
Technical Field
The utility model belongs to the technical field of the bearing, concretely relates to double sealing washer is all along with inner circle pivoted four-point contact ball becomes oar bearing, is applicable to wind-powered electricity generation and becomes oar system.
Background
With the continuous development of the wind power industry, the power of a wind power generator is continuously increased, and the scale of a fan is increased; the scale of a pitch bearing which is one of main core parts of the wind power pitch bearing is correspondingly increased, one of upper and lower rows of sealing rings of the traditional wind power pitch bearing is arranged on a non-mounting surface of an inner ring of the pitch bearing and rotates along with the inner ring, and the other sealing ring is arranged on a non-mounting surface of an outer ring and rotates along with the outer ring; along with the increase of the scale of the pitch bearing, if a traditional pitch bearing sealing structure (one is rotated along with the inner ring and the other is rotated along with the outer ring) is still used, the non-mounting surface of the outer ring of the partial machine type pitch bearing and a fan connecting piece can interfere with the position of a sealing ring on the non-mounting surface of the outer ring, so that the difficulty of replacing the sealing ring is high, and even the cost for replacing the machine is very high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problem, the utility model aims at providing a double sealing washer all becomes oar bearing along with inner circle pivoted four-point contact ball.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a four-point contact ball pitch-variable bearing with double rows of sealing rings rotating along with an inner ring comprises a bearing outer ring, a bearing inner ring, a steel ball, a retainer, an upper row of sealing rings and a lower row of sealing rings; the upper row of sealing rings and the lower row of sealing rings are of structures which rotate along with the bearing inner ring, namely, sealing ring mounting grooves for mounting the upper row of sealing rings and the lower row of sealing rings are formed in the outer diameter surface of the bearing inner ring, the sealing ring mounting grooves matched with the upper row of sealing rings are arranged close to the upper end surface of the bearing inner ring, and the sealing ring mounting grooves matched with the lower row of sealing rings are arranged close to the lower end surface of the bearing inner ring; the inner diameter surface of the bearing outer ring is provided with a sealing ring attaching lip used for being matched with the upper row of sealing rings and the lower row of sealing rings, the sealing ring attaching lip matched with the upper row of sealing rings is arranged close to the upper end surface of the bearing inner ring, and the sealing ring attaching lip matched with the lower row of sealing rings is arranged close to the lower end surface of the bearing inner ring.
And the upper row of sealing rings, the lower row of sealing rings and the corresponding sealing ring attaching lips are in tight fit.
The utility model provides a double sealing washer all becomes oar bearing along with inner circle pivoted four-point contact ball adopts above-mentioned technical scheme, has effectively solved the difficult problem of changing of partial wind turbine generator system change oar bearing seal circle.
Drawings
Fig. 1 is a schematic cross-sectional view of the present invention.
Fig. 2 is the structural schematic diagram of the outer ring and the sealing ring laminating lip of the utility model.
Fig. 3 is the structure diagram of the groove for installing the inner ring and the sealing ring of the present invention.
In the figure: 1. the bearing comprises a bearing outer ring 2, a bearing inner ring 3, a steel ball 4, a retainer 5, an upper row of sealing rings 6, a lower row of sealing rings 7, a sealing ring mounting groove 8 and a sealing ring attaching lip.
Detailed Description
The invention is described in connection with the accompanying drawings and the specific examples:
as shown in fig. 1, a four-point contact ball pitch-variable bearing with double rows of sealing rings rotating along with an inner ring comprises a bearing outer ring 1, a bearing inner ring 2, a steel ball 3, a retainer 4, an upper row of sealing rings 5 and a lower row of sealing rings 6; the outer diameter of the bearing inner ring 2 is provided with a sealing ring mounting groove 7 close to the edges of the upper end surface and the lower end surface; the inner diameter of the bearing outer ring 1 is provided with a sealing ring attaching lip 8 corresponding to the outer ring sealing ring mounting groove near the edges of the upper end surface and the lower end surface; the method is characterized in that: the mounting notches of the upper and lower rows of sealing rings are positioned on the inner ring of the bearing; the upper row of sealing ring attaching lips and the lower row of sealing ring attaching lips are located on the outer ring of the bearing, after the outer ring of the bearing, the inner ring, the steel ball and the retainer are assembled, the upper row of sealing rings and the lower row of sealing rings are respectively arranged in the mounting grooves, close to the upper end face edge and the lower end face edge, of the outer diameter of the inner ring, and the sealing lips are respectively pressed into the sealing ring attaching lips on the upper end face edge and the lower end face edge of the inner diameter of the outer ring, so that the upper row of sealing rings and the lower row of sealing rings rotate along with the inner ring of the bearing.
With reference to fig. 2 and 3, the upper and lower rows of sealing rings are embedded into the mounting grooves 7 of the bearing inner ring 2 through mounting, the sealing lips are pressed into the sealing ring attaching lips 8 corresponding to the bearing outer ring 1, when the bearing operates, the upper and lower rows of sealing ring mounting grooves of the bearing inner ring drive the upper and lower rows of sealing rings to rotate along with the bearing inner ring, compared with the traditional variable-pitch bearing sealing structure (one is rotated along with the inner ring, and the other is rotated along with the outer ring), the upper and lower rows of sealing rings of the variable-pitch bearing have no position interference with the upper and lower end faces of the bearing outer ring, and the problem that part of the sealing rings of the variable-pitch bearing of the wind turbine generator set is not easy to replace is effectively solved.
Claims (2)
1. A four-point contact ball variable pitch bearing with double rows of sealing rings rotating along with an inner ring comprises a bearing outer ring, a bearing inner ring, steel balls, a retainer, an upper row of sealing rings and a lower row of sealing rings; the method is characterized in that: the upper-row sealing rings and the lower-row sealing rings are of structures rotating along with the bearing inner ring, namely sealing ring mounting grooves for mounting the upper-row sealing rings and the lower-row sealing rings are formed in the outer diameter surface of the bearing inner ring, the sealing ring mounting grooves matched with the upper-row sealing rings are arranged close to the upper end surface of the bearing inner ring, and the sealing ring mounting grooves matched with the lower-row sealing rings are arranged close to the lower end surface of the bearing inner ring; the bearing inner race is characterized in that a sealing ring attaching lip matched with an upper row of sealing rings and a lower row of sealing rings is arranged on the inner diameter surface of the bearing outer race, the sealing ring attaching lip matched with the upper row of sealing rings is arranged close to the upper end surface of the bearing inner race, and the sealing ring attaching lip matched with the lower row of sealing rings is arranged close to the lower end surface of the bearing inner race.
2. The four-point contact ball variable pitch bearing with the double-row sealing rings rotating along with the inner ring according to claim 1, characterized in that: and the upper row of sealing rings, the lower row of sealing rings and the corresponding sealing ring attaching lips are in tight fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223112098.9U CN218817591U (en) | 2022-11-23 | 2022-11-23 | Four-point contact ball pitch-variable bearing with double rows of sealing rings rotating along with inner ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223112098.9U CN218817591U (en) | 2022-11-23 | 2022-11-23 | Four-point contact ball pitch-variable bearing with double rows of sealing rings rotating along with inner ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218817591U true CN218817591U (en) | 2023-04-07 |
Family
ID=87253050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223112098.9U Active CN218817591U (en) | 2022-11-23 | 2022-11-23 | Four-point contact ball pitch-variable bearing with double rows of sealing rings rotating along with inner ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218817591U (en) |
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2022
- 2022-11-23 CN CN202223112098.9U patent/CN218817591U/en active Active
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