CN211423184U - Turntable bearing double-lip sealing mechanism for wind power generation - Google Patents
Turntable bearing double-lip sealing mechanism for wind power generation Download PDFInfo
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- CN211423184U CN211423184U CN202020067373.1U CN202020067373U CN211423184U CN 211423184 U CN211423184 U CN 211423184U CN 202020067373 U CN202020067373 U CN 202020067373U CN 211423184 U CN211423184 U CN 211423184U
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Abstract
The utility model discloses a carousel bearing double-lip sealing mechanism for wind power generation, have bearing inner race, bearing inner circle and double-lip sealing washer, bearing inner race has outer lane terminal surface and outer lane axial plane, bearing inner circle has inner circle terminal surface and inner circle axial plane, and double-lip sealing washer has annular installation handle, dust lip and oil seal lip, sets up the annular first radial slot with annular installation handle matched with on the double-lip sealing washer on the outer lane axial plane, and annular dust lip and oil seal lip are U type structure on the double-lip sealing washer wholly, and dust lip and oil seal lip lean on respectively on the inner circle terminal surface and the inner circle axial plane of bearing inner circle; the double-lip sealing ring is provided with an annular outer retaining shoulder and an inner retaining shoulder, the inner retaining shoulder is provided with an inner annular convex point, an annular second radial groove matched with the inner annular convex point on the double-lip sealing ring is further formed in the outer ring shaft surface, and the inner annular convex point is arranged in the second radial groove. The utility model provides a sealing washer is difficult for droing and has good sealed effect.
Description
Technical Field
The utility model relates to a wind power generation equipment is with becoming oar, driftage bearing field, specifically speaking relate to a carousel bearing double lip sealing mechanism for wind power generation.
Background
With the national emphasis on environmental protection, the clean energy wind power generation technology is continuously developed. The turntable bearing is used as an indispensable key device of a pitch system and a yaw system in wind power generation equipment, is limited by the operating environment in the air, and is very difficult to maintain. Thus, a good turntable bearing seal mechanism can significantly reduce later maintenance and service.
The turntable bearing seal mechanism is generally composed of five major parts, respectively: the bearing comprises a bearing outer ring, a bearing inner ring, a retainer, a rolling body and a sealing element. Wherein when the inner and outer rings of the bearing move relatively, a certain amount of grease can be injected to ensure smooth operation and prevent dry friction, and oil pressure can be generated after a long time, so that the good sealing element can ensure the long-time stable operation of the turntable bearing. And the turntable bearing can be ensured not to have impurities such as sand and dust to enter the bearing when in operation. The prior single-lip sealing structure is not suitable for the turntable bearing at the present stage due to low oil pressure resistant degree and poor dust-proof capability. According to the difference of the installation positions, the annular installation handle is installed in the installation groove on one side of the bearing inner ring or the outer ring, the annular installation handle is provided with a semicircular limiting convex circle and an agnail to prevent the sealing ring from falling off, and the dustproof lip and the oil seal lip of the sealing ring are in interference fit contact with the same axial surface of the other side of the bearing to play a role in sealing. This double lip seal configuration has the following disadvantages: when the turntable bearing operates, because the oil pressure direction of the bearing is the same as the mounting direction of the sealing ring mounting handle, the sealing ring mounting handle can be pushed out of the sealing groove under the condition of overlarge oil pressure, so that the sealing is failed; in addition, the windward angle of the wind blowing to the blade is random, the bearing bears the instantaneous load and generates relative displacement of the inner ring and the outer ring, and the problems that the sealing lip and the matching surface of the sealing ring enter the interior of the bearing and grease leakage occur due to insufficient interference magnitude.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a carousel bearing double lip sealing mechanism for wind power generation that the installation handle of sealing washer is difficult for by sealed slot interior roll-off and have good sealed effect.
In order to solve the technical problem, the utility model discloses carousel bearing double-lip sealing mechanism for wind power generation has bearing inner race, bearing inner race and adorns the double-lip sealing washer between bearing inner race and bearing outer race, bearing inner race has outer lane terminal surface and outer lane axial plane, and bearing inner race has inner circle terminal surface and inner circle axial plane, the double-lip sealing washer has annular installation handle, dust lip and oil seal lip, the outer lane axial plane on set up with annular first radial slot of annular installation handle matched with on the double-lip sealing washer, annular installation handle is arranged in annular first radial slot, annular dust lip and oil seal lip on the double-lip sealing washer are U type structure on the whole, dust lip and oil seal lip lean on respectively on the inner circle terminal surface and the inner circle axial plane of bearing inner race; the double-lip sealing washer has annular outer fender shoulder and interior fender shoulder, and interior fender shoulder has interior annular bump, dust lip and oil seal lip link to each other with outer fender shoulder and interior fender shoulder respectively, outer fender shoulder and interior fender shoulder have outer annular face and interior annular face respectively towards one side of installation handle, the outer lane axial plane on still seted up with the radial slot of annular bump matched with annular second in the double-lip sealing washer, the radial slot inslot of second is arranged in to interior annular bump, outer annular face and interior annular face support respectively and lean on the outer lane axial plane.
As the improvement of the utility model, the position that the dustproof lip of two lip sealing washers and outer fender shoulder are connected has that the cross-section is curved circumference recess.
As a further improvement of the utility model, the outer side surface of the annular oil sealing lip on the double-lip sealing ring is provided with a convex cambered surface.
As a further improvement of the utility model, the upper and lower surfaces of the installation handle are respectively provided with a limit convex circle and an agnail with semicircular cross sections.
The utility model has the advantages that: firstly, after the double-lip sealing ring is installed, under the action of oil pressure in the bearing, the stress direction of the installation handle is inconsistent with the oil pressure direction, and the force generated by interference formed by the semicircular lug boss and the barb of the installation handle is added, so that the installation handle cannot be easily separated from the first radial groove; secondly, the inner annular convex points are clamped in the second radial grooves, the stress of the sealing ring mounting handle is reduced when the double-lip sealing ring is under the action of oil pressure, the sealing ring mounting handle is protected doubly, the oil pressure resistance is improved, and the semicircular limiting convex circle and the barb of the mounting handle, and the outer retaining shoulder and the inner retaining shoulder of the double-lip sealing ring are tightly attached to the axial surface of the outer ring of the bearing to form a plurality of reliable static sealing defense lines; thirdly, the dust lip and the oil seal lip form a U-shaped structure, and the dust lip and the oil seal lip are respectively contacted with two orthogonal surfaces of the inner ring of the bearing, when the inner ring and the outer ring of the bearing are subjected to relative deflection under a limit load, the stress action of the dust lip and the oil seal lip are mutually compensated, so that the dynamic sealing action is more reliable; fourthly, the outer side surface of the oil sealing lip is a convex cambered surface, so that oil pressure from the interior of the bearing can be resisted, and the sealing structure is more reliable; fifthly, a groove is simply installed on the cross section of the bearing, and the inner ring does not need to be processed, so that the sealing effect is prevented from being influenced by sundries and oil sludge accumulated in the groove after the bearing works for a long time, the fault tolerance of the installation of the sealing element is greatly improved, the processing technology is simplified, the manufacturing cost is saved, and meanwhile, the installation and the maintenance are convenient; sixthly, the design of the concave circle at the joint of the dustproof lip and the outer retaining shoulder reduces the difficulty in the installation process, and when the turntable bearing generates displacement of the inner ring and the outer ring in the operation process, the dustproof lip can be attached to the section more effectively. By adopting the structure of the turntable bearing double-lip sealing mechanism for wind power generation, the sealing effect is ideal and the pressure resistance is greatly increased through bench test.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a partially sectional schematic view of a turntable bearing double-lip sealing mechanism for wind power generation in the related art.
Fig. 2 is a schematic partial sectional view of the turntable bearing double-lip sealing mechanism for wind power generation according to the present invention.
Fig. 3 is a schematic view of a partial cross-section of the double-lip seal ring in the double-lip seal mechanism of the turntable bearing for wind power generation of the present invention.
Fig. 4 is a schematic partial sectional view of the dual-lip sealing mechanism of the turntable bearing for wind power generation of the present invention, in which the structure of the dual-lip sealing ring is removed.
Detailed Description
Referring to fig. 1, in the figure, the number 1 is the bearing outer ring, 5 is the bearing inner ring, 2 is the mounting handle of the double-lip seal ring, 3 is the oil seal lip, 4 is the dust lip, and the contact surface of the bearing lip is not provided with a groove. The installation handle of the sealing ring in the sealing mechanism in the prior art is easy to slide out from the sealing groove to cause sealing failure.
Referring to fig. 2-4, the present invention provides a dual-lip sealing mechanism for a turntable bearing for wind power generation, which comprises a bearing outer ring 10, a bearing inner ring 20, and a dual-lip sealing ring 30 installed between the bearing outer ring 10 and the bearing inner ring 20, the bearing outer ring 10 has an outer ring end surface 11 and an outer ring axial surface 12, the bearing inner ring 20 has an inner ring end surface 21 and an inner ring axial surface 22, the double-lip seal ring 30 has an annular mounting shank 31, a dust lip 32 and an oil seal lip 33, the outer ring axial surface 12 is provided with an annular first radial groove 13 which is matched with an annular mounting handle 31 on the double-lip sealing ring 30, the annular mounting handle 31 is arranged in the annular first radial groove 13, the annular dust lip 32 and the oil seal lip 33 on the double-lip sealing ring 30 are of U-shaped structures on the whole, and the dust lip 32 and the oil seal lip 33 are respectively abutted against the inner ring end face 21 and the inner ring axial face 22 of the inner ring 20. The double-lip sealing ring 30 is provided with an annular outer retaining shoulder 34 and an annular inner retaining shoulder 35, the inner retaining shoulder 35 is provided with an inner annular salient point 352, the dust-proof lip 32 and the oil-sealing lip 33 are respectively connected with the outer retaining shoulder 34 and the inner retaining shoulder 35, one sides of the outer retaining shoulder 34 and the inner retaining shoulder 35, facing the mounting handle 31, are respectively provided with an outer annular surface 341 and an inner annular surface 351, the outer ring axial surface 12 is further provided with an annular second radial groove 14 matched with the inner annular salient point 352 on the double-lip sealing ring 30, the inner annular salient point 352 is arranged in the second radial groove 14, and the outer annular surface 341 and the inner annular surface 351 are respectively abutted against the outer ring axial surface 12. The connection position of the dust lip 32 and the outer retaining shoulder 34 of the double-lip sealing ring 30 is provided with a circumferential groove 36 with an arc-shaped section. The outer side surface of the annular oil sealing lip 33 on the double-lip sealing ring 30 is provided with a convex cambered surface 331. The upper and lower faces of the mounting handle 31 are respectively provided with a limiting convex circle 311 and a barb 312 with semicircular sections, and the limiting convex circle 311 and the barb 312 are in interference fit with the first radial groove 13.
Claims (4)
1. The utility model provides a carousel bearing double-lip sealing mechanism for wind power generation, has bearing inner race, bearing inner race and adorns the double-lip sealing washer between bearing inner race and bearing inner race, bearing inner race has outer lane terminal surface and outer lane axial plane, and bearing inner race has inner circle terminal surface and inner circle axial plane, the double-lip sealing washer has annular installation handle, dust lip and seals oil lip, its characterized in that: the outer ring axial surface is provided with an annular first radial groove matched with the annular mounting handle on the double-lip sealing ring, the annular mounting handle is arranged in the annular first radial groove, the annular dust lip and the oil seal lip on the double-lip sealing ring are integrally in a U-shaped structure, and the dust lip and the oil seal lip are respectively abutted against the inner ring end surface and the inner ring axial surface of the bearing inner ring; the double-lip sealing washer has annular outer fender shoulder and interior fender shoulder, and interior fender shoulder has interior annular bump, dust lip and oil seal lip link to each other with outer fender shoulder and interior fender shoulder respectively, outer fender shoulder and interior fender shoulder have outer annular face and interior annular face respectively towards one side of installation handle, the outer lane axial plane on still seted up with the radial slot of annular bump matched with annular second in the double-lip sealing washer, the radial slot inslot of second is arranged in to interior annular bump, outer annular face and interior annular face support respectively and lean on the outer lane axial plane.
2. The double-lip seal mechanism of a slewing bearing for wind power generation according to claim 1, wherein: the position where the dustproof lip of two lip sealing washers is connected with outer fender shoulder has the circumference recess that the cross-section is the arc.
3. The double-lip seal mechanism of a slewing bearing for wind power generation according to claim 1, wherein: the outer side surface of the annular oil sealing lip on the double-lip sealing ring is provided with a raised arc surface.
4. The wind power generation slewing bearing double-lip seal mechanism according to any one of claims 1 to 3, wherein: the upper and lower surfaces of the mounting handle are respectively provided with a limit convex circle and an agnail with semicircular sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020067373.1U CN211423184U (en) | 2020-01-14 | 2020-01-14 | Turntable bearing double-lip sealing mechanism for wind power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020067373.1U CN211423184U (en) | 2020-01-14 | 2020-01-14 | Turntable bearing double-lip sealing mechanism for wind power generation |
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| Publication Number | Publication Date |
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| CN211423184U true CN211423184U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020067373.1U Active CN211423184U (en) | 2020-01-14 | 2020-01-14 | Turntable bearing double-lip sealing mechanism for wind power generation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360881A (en) * | 2020-10-14 | 2021-02-12 | 宁波万丰轴承有限公司 | Deep groove ball bearing |
| CN113638964A (en) * | 2021-08-13 | 2021-11-12 | 三一重能股份有限公司 | Bearing and wind generating set |
| CN114135585A (en) * | 2021-12-09 | 2022-03-04 | 中国铁建重工集团股份有限公司 | Main bearing and sealing structure of heading machine |
-
2020
- 2020-01-14 CN CN202020067373.1U patent/CN211423184U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360881A (en) * | 2020-10-14 | 2021-02-12 | 宁波万丰轴承有限公司 | Deep groove ball bearing |
| CN113638964A (en) * | 2021-08-13 | 2021-11-12 | 三一重能股份有限公司 | Bearing and wind generating set |
| CN114135585A (en) * | 2021-12-09 | 2022-03-04 | 中国铁建重工集团股份有限公司 | Main bearing and sealing structure of heading machine |
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Address after: 112000 No.15, Liaohai North Road, Yinzhou Industrial Park, Tieling City, Liaoning Province Patentee after: Tieling five star sealing Research Institute Co.,Ltd. Address before: 112616 No.15, Liaohai North Road, Yinzhou Industrial Park, Yinzhou District, Tieling City, Liaoning Province Patentee before: TIELING FIVE STAR OIL FILM RUBBER SEALING INSTITUTE |