CN206874440U - A kind of wind-driven generator main shaft and base bearing attachment structure - Google Patents
A kind of wind-driven generator main shaft and base bearing attachment structure Download PDFInfo
- Publication number
- CN206874440U CN206874440U CN201720796685.4U CN201720796685U CN206874440U CN 206874440 U CN206874440 U CN 206874440U CN 201720796685 U CN201720796685 U CN 201720796685U CN 206874440 U CN206874440 U CN 206874440U
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- Prior art keywords
- base bearing
- main shaft
- bearing
- ring
- base
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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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- Wind Motors (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model provides a kind of wind-driven generator main shaft and base bearing attachment structure, including base bearing, with the main shaft of base bearing inner hole, the bearing block coordinated with main shaft bearing outer-ring, back-up ring before setting base bearing between base bearing and the spindle front shaft shoulder, back-up ring after base bearing is set between the base bearing and locking nut, labyrinth seal is respectively adopted between back-up ring and base bearing drive end bearing bracket and after base bearing between back-up ring and base bearing rear end cap before the base bearing.By improving main shaft shaft shoulder fillet, increase end ring and using labyrinth sealing form, the fatigue rupture of base bearing can be effectively reduced and can guarantee that the lasting effectiveness of bearing lubrication, so as to improve the stability of the service life of base bearing and whole driving-chain.
Description
Technical field
The utility model belongs to technical field of wind power generation, and in particular to a kind of wind-driven generator main shaft connects with base bearing
Binding structure.
Background technology
In the main shaft driving structure using double-row self-aligning roller bearing support, base bearing bears multiple under complex working condition
Load, reduce stress concentration and ensure stable important of the sufficient lubrication to whole driving-chain.Wind driven generator principal shaft
Hold the mechanical rotary body of support, absorption in most of load on blower fan, including radial load, axial load and moment of flexure etc.,
Bearing fatigue abrasion even failure of removal easily occurs.Major safety risks can be not only produced after base bearing damage, and more
Change and bother very much, fan parking overlong time is caused in Renewal process, thus caused energy loss is excessive, greatly increases
The maintenance workload and maintenance cost of owner.
The technological deficiency that presently, there are is mainly：Base bearing ring gear directly contacts with the main shaft shaft shoulder, and small round corner coordinates should
Power is concentrated, and easily causes the main shaft shaft shoulder and base bearing ring gear to damage；Sealed using bearing (ball) cover and main shaft plug felt rug, sealing
Can be poor, it is necessary to frequently change sealing felt rug and fill grease, maintenance workload and maintenance cost are higher.
Utility model content
The utility model provides a kind of wind-driven generator main shaft and base bearing attachment structure, overcomes existing main shaft and master
The problems such as bearing is fragile, and sealing is poor, and maintenance workload is big, and maintenance cost is high.
A kind of wind-driven generator main shaft provided by the utility model and base bearing attachment structure, including base bearing, with master
The main shaft that brearing bore coordinates, the bearing block coordinated with main shaft bearing outer-ring.On the basis of existing technology, the utility model is also made
Go out following improvement：Back-up ring before setting base bearing, transmits the axial direction that base bearing is born between base bearing and the spindle front shaft shoulder
Pressure, effectively reduce the fatigue damage of base bearing.Back-up ring after setting base bearing, leads between base bearing and the base bearing rear end cap
Locking nut is crossed by back-up ring axial locking after base bearing on main shaft, the locking torque for transmitting locking nut axially presses base bearing
Tightly, avoid locking nut from directly contacting with base bearing inner ring to cause to wear.Before the base bearing back-up ring and base bearing drive end bearing bracket it
Between and base bearing after labyrinth seal is respectively adopted between back-up ring and base bearing rear end cap.The labyrinth seal have zero contact,
Without friction, without lubrication, be easy to maintenance and service life it is long the advantages that.
Further, the spindle front shaft shoulder sets Rouno Cormer Pregrinding Wheel.Effectively avoid the main shaft shaft shoulder with main shaft bearing outer-ring in axle
Stress concentration under being acted on to load, while can effectively adjust base bearing clearance.
Further, before the base bearing between back-up ring and base bearing drive end bearing bracket and after base bearing back-up ring with after base bearing
The outlet port of the labyrinth seal used between end cap sets sealing felt rug, seals more abundant.
Further, top wire hole is provided with the base bearing rear end cap, oil seal bolt is set in top wire hole.
Preferably, the base bearing is double self-aligning roller bearings.
The beneficial effects of the utility model：By improving main shaft shaft shoulder fillet, increase end ring and using labyrinth type close
Envelope form, the fatigue rupture of base bearing can be effectively reduced and can guarantee that the lasting effectiveness of bearing lubrication, so as to improve main shaft
The service life and the stability of whole driving-chain held.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the utility model jackscrew scheme of installation.
1st, base bearing, 2, main shaft, 3, bearing block, 4, back-up ring before base bearing, 5, locking nut, 6, back-up ring after base bearing, 7,
Base bearing drive end bearing bracket, 8, base bearing rear end cap, 9, hold-down bolt, 10, felt rug, 11, positioning jackscrew, 12, oil seal bolt.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining
The utility model, it is impossible to be interpreted as the restriction to the specific protection domain of the utility model.
Embodiment
In reference picture 1, a kind of wind-driven generator main shaft and base bearing attachment structure, including base bearing 1, with base bearing 1
The main shaft 2 that hole coordinates, the bearing block 3 coordinated with the outer ring of base bearing 1.The base bearing 1 is double self-aligning roller bearings.The main shaft
Hold between 1 and the 2 anterior shaft shoulder of main shaft set base bearing before back-up ring 4, between the base bearing 1 and base bearing rear end cap 8 set master
Back-up ring 6 after bearing, and compressed by locking nut 5.Before the base bearing between back-up ring 4 and base bearing drive end bearing bracket 7 and main shaft
Hold and labyrinth seal is respectively adopted between rear back-up ring 6 and base bearing rear end cap 8.The base bearing drive end bearing bracket 7 and base bearing rear end cap 8
It is fixedly connected respectively by hold-down bolt 9 with bearing block 3.It is between back-up ring 4 and base bearing drive end bearing bracket 7 and main before the base bearing
The outlet port of the labyrinth seal used after bearing between back-up ring 6 and base bearing rear end cap 8 sets sealing felt rug 10.The main shaft
The 2 anterior shaft shoulders set Rouno Cormer Pregrinding Wheel, while back-up ring 7 sets big chamfering to coordinate with 2 anterior Rouno Cormer Pregrinding Wheel of main shaft before base bearing.
Reference picture 2, top wire hole is provided with the base bearing rear end cap 8, it is urgent in the hold-down bolt 9 of base bearing rear end cap 8
After torque, installation 3 M16 × 80 position jackscrew 11, are held in position the upper surface of jackscrew 11 and the distance h=of base bearing rear end cap 8
37mm, it is ensured that axis system during final assembly maze-type structure will not contact wear, treat to dismantle after the completion of final assembly
Jackscrew 11 is positioned, changes oil seal bolt 12.
Claims (5)
1. a kind of wind-driven generator main shaft and base bearing attachment structure, including base bearing, the main shaft with base bearing inner hole,
The bearing block coordinated with main shaft bearing outer-ring, it is characterised in that：Before base bearing is set between base bearing and the spindle front shaft shoulder
Back-up ring, sets back-up ring after base bearing between base bearing and the base bearing rear end cap, before the base bearing back-up ring with before base bearing
Labyrinth seal is respectively adopted between end cap and after base bearing between back-up ring and base bearing rear end cap.
2. wind-driven generator main shaft according to claim 1 and base bearing attachment structure, it is characterised in that：The main shaft
The anterior shaft shoulder sets Rouno Cormer Pregrinding Wheel.
3. wind-driven generator main shaft according to claim 1 and base bearing attachment structure, it is characterised in that：The main shaft
The labyrinth seal used between brought forward back-up ring and base bearing drive end bearing bracket and after base bearing between back-up ring and base bearing rear end cap
Outlet port sets sealing felt rug.
4. wind-driven generator main shaft according to claim 1 and base bearing attachment structure, it is characterised in that：The main shaft
Hold and top wire hole is provided with rear end cap, oil seal bolt is set in top wire hole.
5. the wind-driven generator main shaft and base bearing attachment structure, its feature according to claim 1-4 any one exist
In：The base bearing is double self-aligning roller bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720796685.4U CN206874440U (en) | 2017-07-04 | 2017-07-04 | A kind of wind-driven generator main shaft and base bearing attachment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720796685.4U CN206874440U (en) | 2017-07-04 | 2017-07-04 | A kind of wind-driven generator main shaft and base bearing attachment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874440U true CN206874440U (en) | 2018-01-12 |
Family
ID=61332499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720796685.4U Active CN206874440U (en) | 2017-07-04 | 2017-07-04 | A kind of wind-driven generator main shaft and base bearing attachment structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980217A (en) * | 2018-09-27 | 2018-12-11 | 杭州前进齿轮箱集团股份有限公司 | A kind of wind power gear case high speed axis bearing cooling device |
-
2017
- 2017-07-04 CN CN201720796685.4U patent/CN206874440U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980217A (en) * | 2018-09-27 | 2018-12-11 | 杭州前进齿轮箱集团股份有限公司 | A kind of wind power gear case high speed axis bearing cooling device |
| CN108980217B (en) * | 2018-09-27 | 2023-10-20 | 杭州前进齿轮箱集团股份有限公司 | High-speed shaft bearing cooling device of wind power gear box |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |