CN205207445U - A novel seal structure for becoming oar bearing or driftage bearing - Google Patents
A novel seal structure for becoming oar bearing or driftage bearing Download PDFInfo
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- CN205207445U CN205207445U CN201521018237.9U CN201521018237U CN205207445U CN 205207445 U CN205207445 U CN 205207445U CN 201521018237 U CN201521018237 U CN 201521018237U CN 205207445 U CN205207445 U CN 205207445U
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- grease proofing
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- lip
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Abstract
The utility model discloses a novel seal structure for becoming oar bearing or driftage bearing, outer lane and inner circle on the bearing, this novel seal structure still include the sealing washer, and sealing washer left side lower part branch is equipped with the installation root, and the upper right part of sealing washer is equipped with dust lip, is equipped with grease proofing lip A, grease proofing lip B and grease proofing lip C on the sealing washer. The mounting groove that has with the installation of the corresponding interference fit of installation root is opened to the outer lane, and the outer lane lies in mounting groove position department and has a mounting groove side column circles in, and opens the seal groove that has with grease proofing lip A, the corresponding interference fit of grease proofing lip B. Install in between outer lane and the inner circle time when sealing washer cooperation, dust lip just in time with the sealing contact face B upper portion in close contact with of inner circle, grease proofing lip C just in time with the sealing contact face A upper portion in close contact with of mounting groove side column. The utility model discloses reduce or stop sealed oil leak fat phenomenon, improve fan operation's reliability, and reduce seal wear, has avoided leading to seal failure because of the material sclerosis.
Description
Technical field
The utility model relate to wind-driven generator pitching bearing, driftage bearing sealing configuration, particularly relate to a kind of for pitch variable bearings or driftage bearing novel sealing structure.
Background technique
The sealing configuration enclosed between inner ring at pitch variable bearings or driftage bearing China and foreign countries is very important parts, and sealing configuration commonly used by existing wind-driven generator pitching driftage bearing is the sealing of lips sagittal plane, and be referred to as the sealing of Y type, domestic and international bearing producer is all in use.The major defect of prior art is when there is seal failure, occurs that grease is revealed, and produces many harmful effects.The leakage of pitch variable bearings grease can pollute engine room inside, blade; Grease is leaked to electric elements may cause short circuit or fire.The leakage of driftage bearing grease can reduce driftage braking clamp clamping force and cause the fan yaw system failure.The grease of pitch variable bearings or driftage bearing is revealed rear bearing inside and is lacked lubricating grease, and raceway will be caused to wear and tear to be increased, and bearing can be caused further to shift to an earlier date actual effect.
The dominant failure mode of prior art is as follows: when Internal and external cycle there will be larger radial displacement, and this can cause the laminating decreased effectiveness sealed, and occurs the situation that grease is revealed.After seal lip interference fit long term wear, sealability reduces, and will increase the possibility of leakage of oil fat.When ambient temperature is too low (lower than-20 DEG C), seal ring was because losing efficacy after material hardening.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of novel sealing structure for pitch variable bearings or driftage bearing, this novel sealing structure replaces existing Y type sealing configuration, reduces or stops oil leak fat phenomenon, improves the reliability of fan operation.And meet when Internal and external cycle there will be larger radial and axial displacement sealability without larger change; Reduce sealing wear; Avoid causing seal failure because of material hardening.
The purpose of this utility model is achieved through the following technical solutions:
For pitch variable bearings or driftage bearing a novel sealing structure, comprise the outer ring on bearing and inner ring, described outer ring is sealing contact surface A near the plane of inner ring, and the plane of described inner ring near outer ring is sealing contact surface B.This novel sealing structure also comprises seal ring, and described seal ring bottom left section is provided with installation root, and seal ring upper right portion is provided with dust excluder lips, and seal ring upper right portion, right end portion and lower right-most portion respectively correspondence are provided with grease proofing lip A, grease proofing lip B and grease proofing lip C.Described outer ring has the mounting groove that interference fit corresponding with installing root is installed, and outer ring is positioned at mounting groove position and has mounting groove side column, described inner ring has the seal groove with grease proofing lip A, the corresponding interference fit of grease proofing lip B.When seal ring coordinate be installed between outer ring and inner ring time, described dust excluder lips just in time with the sealing contact surface B top close contact of inner ring, described grease proofing lip C just in time with the sealing contact surface A top close contact of mounting groove side column.
In order to realize the utility model better, form side column seal groove between the installation root of described seal ring and grease proofing lip C, this side column seal groove coordinates airtight connection with mounting groove side column.
Further technological scheme is: the corresponding grease proofing lip B in seal groove notch place of described inner ring is provided with sphenoid surface; When seal ring cooperation is installed between outer ring and inner ring, described grease proofing lip part B is placed in seal groove, grease proofing lip B remainder and sphenoid surface close contact; Or when seal ring cooperation is installed between outer ring and inner ring, described grease proofing lip B is all placed in seal groove.
As preferably, described seal ring left end portion projection is provided with afterbody, described outer ring has the step with afterbody corresponding matching.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) seal ring of the present utility model has dust excluder lips, and the sealing contact surface of this dust excluder lips and inner ring forms interference fit, prevents the impurity such as rainwater, salt solution, dust from entering bearing.Grease proofing lip A, B of seal ring contact with the seal groove of inner ring and form interference fit, prevent the impurity such as rainwater, salt solution, dust from entering bearing and prevent the leakage of bearing race internal lubrication fat simultaneously.The protruding arc-shaped of root of seal ring or the installation root of reversed acanthoid, install root and be pressed in axial mounting groove from upper-end surface, outer ring, can effectively prevent seal ring from coming off from groove.
(2) this novel sealing structure replaces existing Y type sealing configuration, reduces or stops oil leak fat phenomenon, improves the reliability of fan operation.And meet when Internal and external cycle there will be larger radial and axial displacement sealability without larger change; Reduce sealing wear; Avoid causing seal failure because of material hardening.
Accompanying drawing explanation
Fig. 1 is the structural representation that pitch variable bearings installs seal ring;
Fig. 2 is the structural representation that seal ring installed by driftage bearing;
Fig. 3 is that the utility model seal ring coordinates the structural representation after installing with outer ring, inner ring;
Fig. 4 is the structural representation of the utility model seal ring.
Wherein, the name corresponding to the reference character in accompanying drawing is called:
10-wheel hub, 11-outer ring, 12-inner ring, 13-blade, 14-bolt A, 15-bolt B, 16-seal ring, 17-steel ball, 18-retainer, 20-tower cylinder, 21-outer ring, 22-inner ring, 23-cabin, 24-bolt C, 25-bolt D, 26-seal ring, 27-steel ball, 1-outer ring, 2-inner ring, 3-seal ring, 31-installs root, 32-afterbody, 33-dust excluder lips, the grease proofing lip C of 34-grease proofing lip A, 35-grease proofing lip B, 36-, 37-side column seal groove, 4-seal groove, 5-mounting groove, 6-gap, 7-mounting groove side column, 8-sphenoid surface.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment
For ensureing sealability and high reliability, guarantee wind electricity pitch variable bearings, driftage bearing working life of more than 20 years.The utility model is in seal lip and install with lasso and fit form is all different from traditional Y type seals.As shown in Figure 1 to 4, a kind of for pitch variable bearings or driftage bearing novel sealing structure, comprise the outer ring 1 on bearing and inner ring 2, outer ring 1 is sealing contact surface A near the plane of inner ring 2, and the plane of inner ring 2 near outer ring 1 is sealing contact surface B.This novel sealing structure also comprises seal ring 3, seal ring 3 bottom left section is provided with installs root 31, seal ring 3 upper right portion is provided with dust excluder lips 33, and seal ring 3 upper right portion, right end portion and lower right-most portion respectively correspondence are provided with grease proofing lip A34, grease proofing lip B35 and grease proofing lip C36; Outer ring 1 has the mounting groove 5 that interference fit corresponding with installing root 31 is installed, and outer ring 1 is positioned at mounting groove 5 position and has mounting groove side column 7, inner ring 2 has the seal groove 4 with grease proofing lip A34, the corresponding interference fit of grease proofing lip B35; When seal ring 3 coordinate be installed between outer ring 1 and inner ring 2 time, dust excluder lips 33 just in time with the sealing contact surface B top close contact of inner ring 2, grease proofing lip C36 just in time with the sealing contact surface A top close contact of mounting groove side column 7.
As shown in Figure 1, this sealing configuration is installed on the structural representation on pitch variable bearings, the outer ring 11 of pitch variable bearings is connected with wheel hub 10 by bolt A, the inner ring 12 of pitch variable bearings is connected with blade 13 by bolt B 15, steel ball 17 and fender bracket 18 are installed between outer ring 11 and inner ring 12, the corresponding steel ball 17 of fender bracket 18 is arranged, seal ring 16 (i.e. the utility model sealing configuration is installed at marginal position place between outer ring 11 and inner ring 12, also namely as Fig. 3, seal ring 3 in 4 structures), can this novel sealing structure be installed on pitch variable bearings by above-mentioned mounting type, when Internal and external cycle there will be larger radial and axial displacement, sealability is without larger change, and sealing effect is better, reduce or stop sealing and leak fat phenomenon, reduce sealing wear, avoid and cause seal failure because of material hardening.
As shown in Figure 2, this sealing configuration is installed on the structural representation on driftage bearing, the outer ring 21 of driftage bearing is connected with cabin 23 by bolt C24, the inner ring 22 of driftage bearing is connected with tower cylinder 20 by bolt D25, steel ball 27 is installed between outer ring 21 and inner ring 22, seal ring 26 (i.e. the utility model sealing configuration is installed at marginal position place between outer ring 21 and inner ring 22, also namely as Fig. 3, seal ring 3 in 4 structures), this novel sealing structure can be installed on driftage bearing by above-mentioned mounting type, when Internal and external cycle there will be larger radial and axial displacement, sealability is without larger change, and sealing effect is better, reduce or stop sealing and leak fat phenomenon, reduce sealing wear, avoid and cause seal failure because of material hardening.
As shown in Figure 4, form side column seal groove 37 between the installation root 31 of seal ring 3 and grease proofing lip C36, this side column seal groove 37 coordinates airtight connection with mounting groove side column 7.Installing root 31 is pressed in axial mounting groove 5 from upper-end surface, outer ring, can effectively prevent seal ring 3 from coming off from groove.
As shown in Figure 3, the corresponding grease proofing lip B35 in seal groove 4 notch place of inner ring 2 is provided with sphenoid surface 8, and this sphenoid surface 8 contributes to the better erection of grease proofing lip B35 in seal groove 4.When seal ring 3 cooperation is installed between outer ring 1 and inner ring 2, grease proofing lip B35 part is placed in seal groove 4, grease proofing lip B35 remainder and sphenoid surface 8 close contact; Or when seal ring cooperation is installed between outer ring and inner ring, described grease proofing lip B is all placed in seal groove.
As shown in Figure 4, seal ring 3 left end portion projection is provided with afterbody 32, outer ring 1 has the step with afterbody 32 corresponding matching.
Existing structure is single radial fit formula sealing configuration, and seal lip name radial interference amount 2mm, when larger radial displacement (more than 1mm) appears in Internal and external cycle, the laminating decreased effectiveness of sealing causes sealability to decline.The utility model adopts multi-direction formula sealing configuration, can effectively reduce Internal and external cycle and occur the harmful effect that larger radial and axial displacement brings.Can not therefore there is obvious reduction in sealability.
Existing Y type sealing configuration voltage endurance capability is 2-2.5Bar (greasing test), and the voltage endurance capability of the utility model sealing configuration reaches more than 4Bar (greasing test), and sealability has obvious lifting.
Existing Y type sealing configuration sealing contact lip region needs to reach roughness Ra 0.8, reduces sealing wear.Need to adopt high-precision numerically controlled lathe to process for reaching such requirement.The sealing configuration sealing contact lip region of the present invention's design only needs to reach roughness Ra 1.6, can meet usage requirement.Reduce the demand to process equipment precision.
The existing Y type sealing configuration seal ring life-span (to occur that large size leaks fat for life span) is generally 1-3, and the seal ring life-span of the utility model sealing configuration reaches more than 5 years, and sealing life significantly increases.The utility model ensure that sealability and high reliability, guarantees wind electricity pitch variable bearings, driftage bearing working life of more than 20 years.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. one kind for pitch variable bearings or driftage bearing novel sealing structure, comprise the outer ring (1) on bearing and inner ring (2), described outer ring (1) is sealing contact surface A near the plane of inner ring (2), the plane of described inner ring (2) near outer ring (1) is sealing contact surface B, it is characterized in that: also comprise seal ring (3), described seal ring (3) bottom left section is provided with installs root (31), seal ring (3) upper right portion is provided with dust excluder lips (33), seal ring (3) upper right portion, right end portion and lower right-most portion respectively correspondence are provided with grease proofing lip A (34), grease proofing lip B (35) and grease proofing lip C (36), described outer ring (1) has and the mounting groove (5) installed root (31) corresponding interference fit and install, outer ring (1) is positioned at mounting groove (5) position and has mounting groove side column (7), described inner ring (2) has the seal groove (4) with grease proofing lip A (34), grease proofing lip B (35) corresponding interference fit, when seal ring (3) cooperation is installed between outer ring (1) and inner ring (2), described dust excluder lips (33) just in time with the sealing contact surface B top close contact of inner ring (2), described grease proofing lip C (36) just in time with the sealing contact surface A top close contact of mounting groove side column (7).
2. according to according to claim 1 for pitch variable bearings or driftage bearing novel sealing structure, it is characterized in that: form side column seal groove (37) between the installation root (31) of described seal ring (3) and grease proofing lip C (36), this side column seal groove (37) coordinates airtight connection with mounting groove side column (7).
3., according to the novel sealing structure for pitch variable bearings or driftage bearing described in claim 1 or 2, it is characterized in that: the corresponding grease proofing lip B (35) in seal groove (4) the notch place of described inner ring (2) is provided with sphenoid surface (8).
4. according to according to claim 3 for pitch variable bearings or driftage bearing novel sealing structure, it is characterized in that: described seal ring (3) left end portion projection is provided with afterbody (32) described outer ring (1) having the step with afterbody (32) corresponding matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018237.9U CN205207445U (en) | 2015-12-10 | 2015-12-10 | A novel seal structure for becoming oar bearing or driftage bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018237.9U CN205207445U (en) | 2015-12-10 | 2015-12-10 | A novel seal structure for becoming oar bearing or driftage bearing |
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| CN205207445U true CN205207445U (en) | 2016-05-04 |
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| CN201521018237.9U Active CN205207445U (en) | 2015-12-10 | 2015-12-10 | A novel seal structure for becoming oar bearing or driftage bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917137A (en) * | 2017-12-12 | 2018-04-17 | 洛阳新能轴承制造有限公司 | A kind of water proof type pitch variable bearings |
| CN110454506A (en) * | 2019-09-11 | 2019-11-15 | 新天绿色能源股份有限公司 | A kind of bearing seal structure of wind-driven generator |
| CN110864046A (en) * | 2019-12-27 | 2020-03-06 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Claw type bearing sealing structure |
| CN111894992A (en) * | 2020-08-06 | 2020-11-06 | 中国铁建重工集团股份有限公司 | Engineering machine, main bearing and sealing element |
| 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 |
-
2015
- 2015-12-10 CN CN201521018237.9U patent/CN205207445U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917137A (en) * | 2017-12-12 | 2018-04-17 | 洛阳新能轴承制造有限公司 | A kind of water proof type pitch variable bearings |
| CN110454506A (en) * | 2019-09-11 | 2019-11-15 | 新天绿色能源股份有限公司 | A kind of bearing seal structure of wind-driven generator |
| CN110864046A (en) * | 2019-12-27 | 2020-03-06 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Claw type bearing sealing structure |
| CN111894992A (en) * | 2020-08-06 | 2020-11-06 | 中国铁建重工集团股份有限公司 | Engineering machine, main bearing and sealing element |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211124 Address after: 610306 1st floor, building 5, 143 Xiabei street, Chengxiang Town, Qingbaijiang District, Chengdu City, Sichuan Province Patentee after: CHENGDU TIANMA PRECISION MACHINERY Co.,Ltd. Address before: 610000 No. 143, Xiabei street, Chengxiang Town, Qingbaijiang District, Chengdu, Sichuan Patentee before: TIANMA (CHENGDU) RAILWAY BEARING Co.,Ltd. |
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| TR01 | Transfer of patent right |