CN104482178A - Sealing device between center shaft and gear box end cover - Google Patents
Sealing device between center shaft and gear box end cover Download PDFInfo
- Publication number
- CN104482178A CN104482178A CN201410823497.7A CN201410823497A CN104482178A CN 104482178 A CN104482178 A CN 104482178A CN 201410823497 A CN201410823497 A CN 201410823497A CN 104482178 A CN104482178 A CN 104482178A
- Authority
- CN
- China
- Prior art keywords
- central shaft
- end cap
- oil seal
- end cover
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
Abstract
The invention relates to a sealing device between a center shaft and a gear box end cover. The center shaft is supported in a center shaft hole of the end cover through a bearing; an oil seal is arranged between the center shaft and the center shaft hole of the end cover. The sealing device is characterized in that the oil seal comprises two oil seals; an inner oil seal close to the bearing is positioned on a spigot; an outer oil seal close to the end part of the end cover is limited through a hole block; a distance ring is arranged between the inner oil seal and the outer oil seal; the periphery of the distance ring is provided with a grease injection slot; a channel which is communicated with a grease injection port is formed in the end cover; the end point of the channel is communicated with the grease injection slot.
Description
Technical field
The present invention relates to a kind of seal arrangement, especially a kind of input end seal arrangement for wind driven generator yaw or variable propeller gearbox.
Background technique
Along with developing rapidly of global renewable energy sources market, wind-power electricity generation becomes energy industry new growth point gradually, has possessed the ability of catching up with and surpassing other generating means, has worldwide presented the gesture of fast development.
Driftage and variable propeller gearbox are all one of vitals of wind-driven generator, and its effect is used to the angle regulating engine rooms of wind power generators and blade, makes it adapt to the change of wind direction or wind-force, thus more effectively utilizes wind energy.Because operating mode is relatively more severe, inconvenient maintenance, adds that installing space is narrow and small, and variable propeller gearbox has strict requirement to reliability, lubrication, sealing and installation.At present, the bearing on the input end input shaft of variable propeller gearbox generally adopts two pass oil sealing sealing.This seal lubrication device at gear-box, due between twice oil sealing without effectively lubricating, oil seal lip wearing and tearing in outside are very fast easily lost efficacy; In addition, because input end rotating speed is higher, outer side seal is without the easy frictional heat of effectively lubricating, and heat conducts to bearing by central gear, easily causes bearing running hot retainer distortion ultimate failure.
At present, adopt in the middle of dual-oil seal at the input end of driftage or variable propeller gearbox and separate with distance ring, and by the external side seal lubrication of lubricant grease, be not seen in report.
Summary of the invention
The object of the invention is to: two pass oil sealing need be equipped with for the variable propeller gearbox of existing wind-driven generator or the sealing of Yaw gearbox input end, lubricating fitting, but fail to solve the lubrication of outer side seal, often outer side seal is prior to inner side oil seal failure, and bring unnecessary heat to whole system due to outer side seal dry friction, have problems such as causing bearing running hot inefficacy, provide a kind of have new sealing, lubricating system for going off course or wind-driven generator wheel-box partially sealed of variable propeller gearbox.
The object of the present invention is achieved like this: the seal arrangement between a kind of central shaft and gear box end cover, central shaft by bearings in the central shaft hole of end cap, oil sealing is provided with between central shaft and the central shaft hole of end cap, it is characterized in that, described oil sealing comprises twice oil sealing, the inner oil seal closing on bearing is positioned seam, the outer oil seal passing hole gear closing on end cap end is spacing, distance ring is provided with between interior outer oil seal, distance ring periphery is provided with greasing slotted eye, end cap is provided with the passage of linking up with grease inlet, and terminal and the greasing slotted eye of passage are linked up.
In the present invention: described bearing is deep groove ball bearing, described oil sealing is skeleton-type oil seal; The lip of lubricant oil in gear-box to deep groove ball bearing and inner oil seal provides lubrication, and the lip that the grease of injection is outer oil seal provides lubrication.
In the present invention: central shaft hole refers to the inwall in the cylindricality cofferdam concentric with central shaft arranged on end cap, and the space between cylindricality cofferdam outer wall and end cap and lubricant reservoir are linked up, and described outer wall is at least supported in end cap by three equally distributed stiffening ribs.
In the present invention: described passage of linking up with grease inlet is passed the passage in stiffening rib and cylindricality cofferdam by end cap outer wall.
The invention has the advantages that: because inner oil seal is positioned seam, outer oil seal passing hole gear is spacing, distance ring is provided with between interior exterior seal ring, namely change in the past outside oil sealing without effectively fixing, effectively prevent in running and cause the drawback of seal failure because oil sealing inner ring is wriggled, a stable chamber can be formed again between interior outer oil seal.Because the chamber between inside and outside twice oil sealing fills full grease by passage, substantially improve the lubrication effect of outer side seal, decrease the dry grinding of outer side seal and the heat of generation, extend the working life of oil sealing.
The present invention be advantageous in that: because central shaft hole is the cylindricality cofferdam concentric with central shaft arranged on end cap, its outer wall is at least supported in end cap by three equally distributed stiffening ribs, oil sealing and bearing are placed in cylindricality cofferdam, not only compact structure, reasonable stress, and the relative contact extending end cap and central shaft amasss, and makes central shaft run more steady.Lubrication.
Accompanying drawing explanation
Fig. 1 is a kind of example structure schematic diagram that the present invention relates to.
Fig. 2 is the enlarged view of the a-quadrant in Fig. 1.
Fig. 3 is the distance ring structural representation that the present invention relates to.
In figure: 1, end cap, 2, central shaft, 3, hole gear, 4, outer oil seal, 5, distance ring, 6, bearing, 7, passage, 8, inner oil seal, 9, seam, 10, greasing slotted eye, 11, stiffening rib, 12, cylindricality cofferdam.
Embodiment
Accompanying drawing discloses the concrete structure of a kind of embodiment that the present invention relates to without limitation, is further described the present invention below in conjunction with accompanying drawing.
From Fig. 1 Fig. 2: central shaft 2 of the present invention is supported in by bearing 6 in the central shaft hole of end cap 1, oil sealing is provided with between the central shaft hole of central shaft 2 and end cap 1, described oil sealing comprises inside and outside twice oil sealing, the inner oil seal 8 closing on bearing 6 is positioned seam 9, outer oil seal 4 passing hole of closing on end cap 1 end is kept off 3 spacing, be provided with distance ring 5 between inner oil seal 8 and outer oil seal 4, end cap 1 is provided with the passage 7 of linking up with grease inlet, and terminal and the greasing slotted eye 10 of passage are linked up.
In the present embodiment: described bearing 6 is deep groove ball bearing, and described inner oil seal 8 and outer oil seal 4 are skeleton-type oil seal; In actual motion, the lip of the lubricant oil in gear-box to deep groove ball bearing and inner oil seal 8 provides lubrication, and the grease of injection provides lubrication for the lip of outer oil seal 4.
In the present embodiment: central shaft hole refers to the inwall in the cylindricality cofferdam 12 concentric with central shaft 2 arranged on end cap, space between cylindricality cofferdam 12 outer wall and end cap 1 and lubricant reservoir are linked up, and described outer wall is at least supported in end cap 1 by three equally distributed stiffening ribs 11.
As seen from Figure 2, distance ring 5 periphery is provided with greasing slotted eye 10, and the grease injected by passage 7 can enter chamber between inner oil seal 8 and outer oil seal 4 by greasing slotted eye 10.
During concrete enforcement: the passage that described passage 7 of linking up with grease inlet can be linked up with the greasing slotted eye 10 of distance ring 5 through stiffening rib 11 and cylindricality cofferdam 12 by the outer wall of end cap 1.
Claims (4)
1. the seal arrangement between central shaft and gear box end cover, central shaft by bearings in the central shaft hole of end cap, oil sealing is provided with between central shaft and the central shaft hole of end cap, it is characterized in that, described oil sealing comprises twice oil sealing, the inner oil seal closing on bearing is positioned seam, the outer oil seal passing hole gear closing on end cap end is spacing, distance ring is provided with between interior outer oil seal, distance ring periphery is provided with greasing slotted eye, end cap is provided with the passage of linking up with grease inlet, and terminal and the greasing slotted eye of passage are linked up.
2. the seal arrangement between central shaft according to claim 1 and gear box end cover, is characterized in that: described bearing is deep groove ball bearing, and described oil sealing is skeleton-type oil seal; The lip of lubricant oil in gear-box to deep groove ball bearing and inner oil seal provides lubrication, and the lip that the grease of injection is outer oil seal provides lubrication.
3. the seal arrangement between central shaft according to claim 1 and 2 and gear box end cover, it is characterized in that: central shaft hole refers to the inwall in the cylindricality cofferdam concentric with central shaft arranged on end cap, space between cylindricality cofferdam outer wall and end cap and lubricant reservoir are linked up, and described outer wall is at least supported in end cap by three equally distributed stiffening ribs.
4. the seal arrangement between central shaft according to claim 3 and gear box end cover, is characterized in that: described passage of linking up with grease inlet is passed the passage in stiffening rib and cylindricality cofferdam by end cap outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823497.7A CN104482178A (en) | 2014-12-26 | 2014-12-26 | Sealing device between center shaft and gear box end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823497.7A CN104482178A (en) | 2014-12-26 | 2014-12-26 | Sealing device between center shaft and gear box end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104482178A true CN104482178A (en) | 2015-04-01 |
Family
ID=52756756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410823497.7A Pending CN104482178A (en) | 2014-12-26 | 2014-12-26 | Sealing device between center shaft and gear box end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104482178A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114201A (en) * | 2018-10-22 | 2019-01-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of labyrinth seal structure and gear box structure |
| CN110425093A (en) * | 2019-08-29 | 2019-11-08 | 南京高速齿轮制造有限公司 | A kind of wind power generating set barring gear |
| CN111379841A (en) * | 2018-12-27 | 2020-07-07 | 新疆金风科技股份有限公司 | Transmission, sealing structure thereof and wind generating set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241791Y (en) * | 2008-07-11 | 2009-05-20 | 天津减速机股份有限公司 | Paddle-changeable gear reduction machine for wind power generation |
| CN201810755U (en) * | 2010-10-25 | 2011-04-27 | 重庆齿轮箱有限责任公司 | Marine gear box and oil seal structure thereof |
| CN202901238U (en) * | 2012-09-30 | 2013-04-24 | 广西新方向化学工业有限公司 | High pressure pump output shaft oil sealing structure |
| CN204512378U (en) * | 2014-12-26 | 2015-07-29 | 南京高速齿轮制造有限公司 | Seal arrangement between central shaft and gear box end cover |
-
2014
- 2014-12-26 CN CN201410823497.7A patent/CN104482178A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241791Y (en) * | 2008-07-11 | 2009-05-20 | 天津减速机股份有限公司 | Paddle-changeable gear reduction machine for wind power generation |
| CN201810755U (en) * | 2010-10-25 | 2011-04-27 | 重庆齿轮箱有限责任公司 | Marine gear box and oil seal structure thereof |
| CN202901238U (en) * | 2012-09-30 | 2013-04-24 | 广西新方向化学工业有限公司 | High pressure pump output shaft oil sealing structure |
| CN204512378U (en) * | 2014-12-26 | 2015-07-29 | 南京高速齿轮制造有限公司 | Seal arrangement between central shaft and gear box end cover |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114201A (en) * | 2018-10-22 | 2019-01-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of labyrinth seal structure and gear box structure |
| CN111379841A (en) * | 2018-12-27 | 2020-07-07 | 新疆金风科技股份有限公司 | Transmission, sealing structure thereof and wind generating set |
| CN110425093A (en) * | 2019-08-29 | 2019-11-08 | 南京高速齿轮制造有限公司 | A kind of wind power generating set barring gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |
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| RJ01 | Rejection of invention patent application after publication |