CN106402166A - Double-row spherical roller bearing double-lip sealing structure and wind driven generator - Google Patents
Double-row spherical roller bearing double-lip sealing structure and wind driven generator Download PDFInfo
- Publication number
- CN106402166A CN106402166A CN201610917939.3A CN201610917939A CN106402166A CN 106402166 A CN106402166 A CN 106402166A CN 201610917939 A CN201610917939 A CN 201610917939A CN 106402166 A CN106402166 A CN 106402166A
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- Prior art keywords
- sealing ring
- sealing
- roller bearing
- spherical roller
- double
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a double-row spherical roller bearing double-lip sealing structure and a wind driven generator, and belongs to the related technical field of wind power equipment. The double-row spherical roller bearing double-lip sealing structure mainly comprises an inner sealing ring; a pressing plate is arranged on the sealing ring; the inner side of the pressing plate is provided with a sealing ring body, a bearing end cover and a double-row spherical roller bearing body; the sealing ring body comprises a sealing ring body top which is connected with one end of a bent waist part, the other end of the bent waist part is in sealing connection with a vertical transition part, and the vertical transition part is connected with the bottom of the sealing ring body; and the lower surface of the bottom of the sealing ring body is provided with a first sealing lip and a second sealing lip. According to the double-row spherical roller bearing double-lip sealing structure and the wind driven generator, by improving a sealing ring body in an existing roller bearing sealing structure, the problems of sealing failure and leakage of the original sealing structure under special working conditions are effectively solved through the double-row spherical roller bearing double-lip sealing structure.
Description
Technical field
The present invention relates to wind power equipment correlative technology field, specifically, it is to be related to a kind of double row spherical roller bearing pair
Lip seal structure and wind-driven generator.
Background technology
Selecting double row spherical roller bearing megawatt wind turbine generator main shaft bearing single bearing structure more.As shown in figure 1, at present
The sealing structure of this bearing mainly adopts the reinforced seal structure of single lip, that is, include inner sealing ring 1-1, on sealing ring 1-1
Portion is pressing plate 1-2, is sealing ring 1-3, bearing (ball) cover 1-4 and double row spherical roller bearing body 1-5 inside pressing plate 1-2.
Because self-aligning roller bearing allows main shaft to move radially in bearing block relatively, when wind wheel is subject to and main shaft off plumb
During load, in rotation process, main shaft can have radial motion by bearing block relatively, when there is radial motion in main shaft, sealing ring 1-3's
The magnitude of interference of lip 1-6 has a direction will be consumed, and its waist 1-7 cannot be carried out radial compensation, then cause sealing to lose
Effect, after seal failure, lubricant grease cannot be flowed in oil-collecting bottle by design requirement, but from sealing ring 1-3 and inner sealing ring
Overflow between 1-1.
Although existing sealing ring carries turn, certain self compensation work can be played with aging to the abrasion of sealing ring
With, but when the pendulum angle of main shaft is larger, the compensation dosage of existing turn is not just much of that, causes oil leak.
For solving the above problems, the magnitude of interference that Some Enterprises adopt the elastic force increasing turn or increase sealing ring lip,
Compensation problem can be solved in a short time, but the life-span of sealing ring can be shortened.Because of high-altitude more than eight or nine ten meters for the fan operation, shut down
Maintenance cost is higher, and the mode solving compensation problem with sacrificing the life-span is difficult to be accepted substantially.
Therefore, common fault and the persistent ailment having become this industry revealed by wind-powered electricity generation industry base bearing oils and fatss, has had influence on unit
The operation in later stage and maintenance.
Content of the invention
The purpose of the present invention is for overcoming above-mentioned the deficiencies in the prior art, providing a kind of double row spherical roller bearing lips close
Seal structure.The present invention by improving so as to the former sealing of effectively solving to the sealing ring in existing roller bearing sealing structure
Structure seal failure and leakage problem under special operation condition.
In order to reach above-mentioned purpose, the present invention adopts the following technical scheme that：
A kind of double row spherical roller bearing two-lid sealing structure, including inner sealing ring, sealing ring top is pressing plate, pressing plate
Inner side is sealing ring, bearing (ball) cover and double row spherical roller bearing body,
Described sealing ring includes sealing ring top, and sealing ring top is connected with one end of bending waist, bends the another of waist
One end and vertical transition part airtight connection, vertical transition part is connected with sealing ring bottom；
The lower surface of sealing ring bottom has the first sealing lip and the second sealing lip.
Preferably, described sealing ring top, bending waist, vertical transition part, sealing ring bottom, the first sealing lip and second
Sealing lip is formed in one.
Preferably, described sealing ring is nitrile rubber material.
Preferably, described sealing ring is hydrogenation nitrile rubber material.
Preferably, there are in described sealing ring bottom two turns, two turns are located at the first sealing lip and second
Above sealing lip.
While said structure scheme is provided, present invention also offers a kind of wind-driven generator, this wind-power electricity generation equipment
There is a main shaft, main shaft is relied on double row spherical roller bearing to be assembled with bearing block and is integrated, wherein, described double row spherical roller bearing
For above-mentioned double row spherical roller bearing two-lid sealing structure.
The invention has the beneficial effects as follows：
(1) existing sealing ring waist is changed to bend waist so as to have larger elastic and compressible amount so that being somebody's turn to do
Sealing ring is provided with certain stroke (i.e. compensation dosage) so that main shaft is when moving radially in bearing radial direction after mounting
Sealing ring has good trackability, and then improves sealing effectiveness.
(2) single bead structure is changed to dual lip configuration so as to many one layer of sealing protections, improves the anti-bias energy of sealing ring
Power.
Brief description
Fig. 1 is the existing double row spherical roller bearing list lip seal structural representation that in the present invention, background section refers to
Figure；
Fig. 2 is the schematic diagram of double row spherical roller bearing two-lid sealing structure provided by the present invention；
Fig. 3 is the structural representation of sealing ring in the present invention；
In figure：
1-1, sealing ring, 1-2, pressing plate, 1-3, sealing ring, 1-4, bearing (ball) cover, 1-5 and double row spherical roller bearing are originally
Body, 1-6, lip, 1-7, waist；
2-1, sealing ring, 2-2, pressing plate, 2-3, sealing ring, 2-4, bearing (ball) cover, 2-5 and double row spherical roller bearing are originally
Body；
2-31, sealing ring top, 2-32, bending waist, 2-33, vertical transition part, 2-34, sealing ring bottom, 2-35, the
One sealing lip, 2-36, the second sealing lip, 2-37, turn.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1：A kind of double row spherical roller bearing two-lid sealing structure, its structure as shown in Figures 2 and 3, including in
Portion sealing ring 2-1, sealing ring 2-1 top is pressing plate 2-2, is sealing ring 2-3, bearing (ball) cover 2-4 and double-row-ball inside pressing plate 2-2
Face roller bearing body 2-5；
Bearing (ball) cover 2-4 is located above sealing ring 2-3.Wherein, sealing ring 2-3 includes integrally formed sealing ring top 2-
31, sealing ring top 2-31 are connected with one end of bending waist 2-32, bend the other end of waist 2-32 and vertical transition part 2-
33 airtight connections, vertical transition part 2-33 is connected with sealing ring bottom 2-34；
The lower surface of sealing ring bottom 2-34 has the first sealing lip 2-35 and the second sealing lip 2-36.
Meanwhile, sealing ring 2-3 can be nitrile rubber or hydrogenation nitrile rubber material.
There are in the 2-34 of sealing ring bottom two turn 2-37, two turn 2-37 are located at the first sealing lip 2- respectively
35 and second above sealing lip 2-36.
The sealing ring of the present invention, after carrying out vulcanizing treatment, is loaded turn 2-37 by two openings, installs bullet
After spring coil, breach is filled with resin glue, and after resin adhesive curing, original two openings form seal form.Compare former single lip Single spring
Two benefits are had, one is that turn will not fall off, two is that turn can not be corroded for coil structures.
The principle of the present invention is：Main shaft when being moved radially, can also protect by the magnitude of interference of two lips of sealing ring 2-3
Hold, have direction bending waist 2-32 can extend or rotate, and another direction because bending waist 2-32 be in compress or
Rotate, so meeting after main shaft moves radially generation, compensate it is ensured that the sealing effectiveness of sealing ring 2-3 to moving radially.
Again because there being the presence of two sealing lips, the anti-bias ability of sealing ring is also greatly increased, so further
Improve sealing effectiveness.
Embodiment 2：A kind of wind-driven generator, this wind-driven generator has main shaft, and main shaft relies on double row spherical roller bearing
It is integrated with bearing block assembling, wherein, described double row spherical roller bearing has the two-lid sealing structure described in embodiment 1.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to embodiment will be apparent from for those skilled in the art, as defined herein general
Principle can be realized without departing from the spirit or scope of the present invention in other embodiments, is not described in detail
The part presenting with partial enlargement, is prior art, and here is not repeated.Therefore, the present invention is not intended to be limited to herein
These shown embodiments, and it is to fit to the wide scope consistent with principles disclosed herein and feature.
Claims (6)
1. a kind of double row spherical roller bearing two-lid sealing structure, including inner sealing ring, sealing ring top is pressing plate, in pressing plate
Side is sealing ring, bearing (ball) cover and double row spherical roller bearing body it is characterised in that
Described sealing ring includes sealing ring top, and sealing ring top is connected with one end of bending waist, the other end of bending waist
With vertical transition part airtight connection, vertical transition part is connected with sealing ring bottom；
The lower surface of sealing ring bottom has the first sealing lip and the second sealing lip.
2. double row spherical roller bearing two-lid sealing structure according to claim 1 is it is characterised in that described sealing ring top
Portion, bending waist, vertical transition part, sealing ring bottom, the first sealing lip and the second sealing lip are formed in one.
3. double row spherical roller bearing two-lid sealing structure according to claim 1 is it is characterised in that described sealing ring is
Nitrile rubber material.
4. double row spherical roller bearing two-lid sealing structure according to claim 1 is it is characterised in that described sealing ring is
Hydrogenation nitrile rubber material.
5. double row spherical roller bearing two-lid sealing structure according to claim 1 is it is characterised in that described sealing ring bottom
There are in portion two turns, two turns are located above the first sealing lip and the second sealing lip.
6. a kind of wind-driven generator, this wind-driven generator has main shaft, and main shaft relies on double row spherical roller bearing to fill with bearing block
Join and be integrated it is characterised in that described double row spherical roller bearing is the biserial sphere rolling described in any one of claim 1-3
Sub- bearing two-lid sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917939.3A CN106402166B (en) | 2016-10-21 | 2016-10-21 | Double-row spherical roller bearing double-lip sealing structure and wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917939.3A CN106402166B (en) | 2016-10-21 | 2016-10-21 | Double-row spherical roller bearing double-lip sealing structure and wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402166A true CN106402166A (en) | 2017-02-15 |
| CN106402166B CN106402166B (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610917939.3A Active CN106402166B (en) | 2016-10-21 | 2016-10-21 | Double-row spherical roller bearing double-lip sealing structure and wind driven generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763218A (en) * | 2017-09-04 | 2018-03-06 | 昆明理工大学 | A kind of elastic seal ring and Circular Sliding sealing device |
| CN111648926A (en) * | 2019-03-04 | 2020-09-11 | 中车株洲电力机车研究所有限公司 | Variable-pitch bearing oil collecting device of wind turbine generator |
| CN113565882A (en) * | 2021-07-30 | 2021-10-29 | 北京曙光航空电气有限责任公司 | Front end cover sealing structure for preventing oil leakage of high-speed generator |
| CN113738767A (en) * | 2021-11-02 | 2021-12-03 | 杭州斯格尔液压机械有限公司 | Rolling bearing pressing plate special for electric automobile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB562456A (en) * | 1943-03-18 | 1944-07-03 | Angus George Co Ltd | Improvements in oil seals |
| US4699526A (en) * | 1985-08-01 | 1987-10-13 | Nok Corporation | Sealing device for bearings |
| US4750748A (en) * | 1985-07-15 | 1988-06-14 | Ihc Holland N.V. | Shaft seal with flexible midportion and garter spring |
| CN201739356U (en) * | 2010-06-22 | 2011-02-09 | 沈阳瑞祥风能设备有限公司 | Sealing structure for slewing bearing of large-scale fan |
| CN103104617A (en) * | 2013-03-04 | 2013-05-15 | 苏州航天特谱风能技术有限公司 | Main bearing sealing system for wind generating set |
| CN206221514U (en) * | 2016-10-21 | 2017-06-06 | 山东中车风电有限公司 | A kind of double row spherical roller bearing two-lid sealing structure and wind-driven generator |
-
2016
- 2016-10-21 CN CN201610917939.3A patent/CN106402166B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB562456A (en) * | 1943-03-18 | 1944-07-03 | Angus George Co Ltd | Improvements in oil seals |
| US4750748A (en) * | 1985-07-15 | 1988-06-14 | Ihc Holland N.V. | Shaft seal with flexible midportion and garter spring |
| US4699526A (en) * | 1985-08-01 | 1987-10-13 | Nok Corporation | Sealing device for bearings |
| CN201739356U (en) * | 2010-06-22 | 2011-02-09 | 沈阳瑞祥风能设备有限公司 | Sealing structure for slewing bearing of large-scale fan |
| CN103104617A (en) * | 2013-03-04 | 2013-05-15 | 苏州航天特谱风能技术有限公司 | Main bearing sealing system for wind generating set |
| CN206221514U (en) * | 2016-10-21 | 2017-06-06 | 山东中车风电有限公司 | A kind of double row spherical roller bearing two-lid sealing structure and wind-driven generator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763218A (en) * | 2017-09-04 | 2018-03-06 | 昆明理工大学 | A kind of elastic seal ring and Circular Sliding sealing device |
| CN111648926A (en) * | 2019-03-04 | 2020-09-11 | 中车株洲电力机车研究所有限公司 | Variable-pitch bearing oil collecting device of wind turbine generator |
| CN113565882A (en) * | 2021-07-30 | 2021-10-29 | 北京曙光航空电气有限责任公司 | Front end cover sealing structure for preventing oil leakage of high-speed generator |
| CN113738767A (en) * | 2021-11-02 | 2021-12-03 | 杭州斯格尔液压机械有限公司 | Rolling bearing pressing plate special for electric automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402166B (en) | 2020-10-30 |
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