CN204386808U - Middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure - Google Patents
Middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure Download PDFInfo
- Publication number
- CN204386808U CN204386808U CN201420661831.9U CN201420661831U CN204386808U CN 204386808 U CN204386808 U CN 204386808U CN 201420661831 U CN201420661831 U CN 201420661831U CN 204386808 U CN204386808 U CN 204386808U
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- China
- Prior art keywords
- blade
- bearing
- coupling shaft
- row conical
- double
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- Expired - Fee Related
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- Y02E10/722—
Abstract
Middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure designed by the utility model, it mainly comprises wheel hub, wheel hub is connected with main shaft, wheel hub is provided with blade connecting bushing, stretch in wheel hub at blade coupling shaft through blade connecting bushing, between blade coupling shaft and blade connecting bushing, be provided with first set double-row conical bearing near blade connecting end, inside double-row conical bearing, outer ring is close to and is provided with bearing protecgulum, and inner blade coupling shaft is provided with fastening round nut; Outside is provided with oil sealing.The second cover double-row conical bearing is provided with near wheel hub connecting end between blade coupling shaft and blade connecting bushing, be close to outside double-row conical bearing and be provided with bearing bonnet, blade coupling shaft inside double-row conical bearing is provided with bearing inner race briquetting, blade connecting bushing inwall inside double-row conical bearing is provided with bearing outer ring and fixes briquetting, the blade coupling shaft inside bearing inner race briquetting is provided with fastening round nut.
Description
Technical field
The utility model relates to wind turbine equipment field, especially a kind of middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure.
Background technique
The means of fixation of deep groove ball bearing, single-row tapered roller bearing, selfaligning roller bearing and angular contact bearing combination is adopted at the blade coupling shaft two ends of current middle-size and small-size pitch-controlled wind-driven generator, because blade when blower fan operates has larger centrifugal force (the larger centrifugal force of power of fan is larger), and blade coupling shaft has again the power that (passive) forces rotation when becoming oar.When blade coupling shaft two ends all adopt deep groove ball bearing, though there is no axial float, the responsive to axial force of (during blade rotary) centrifugal force and gravity cannot be born and occur damaging phenomenon very soon.When blade coupling shaft two ends all adopt single-row tapered roller bearing, although (during vane rotary) centrifugal force, gravity and bidirectional axial force effect can be born according to calculating, but correctly cannot adjust the axial clearance of tapered roller bearing during assembling,, there is the dumb or blade axial float (and bearing premature breakdown) of vane propeller-changing in performance tension or cross loose phenomenon (axial clearance is too large or too little).When adopting selfaligning roller bearing and combine with paired mounting angular contact bearing, during initial installation, between bearings at both ends, axial clearance is determined, but the gap of angular contact bearing self is larger, blade occurs that under the effect of passive paddle changing power certain blade first becomes oar, and it is asynchronous to cause Three-blade to become oar, blower fan cannot normally run.
Summary of the invention
The purpose of this utility model is deficiency in order to solve above-mentioned technology and provides a kind of blade coupling shaft to rotate flexibly and the middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure of long service life.
In order to achieve the above object, middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure designed by the utility model, it mainly comprises wheel hub, wheel hub is connected with main shaft, wheel hub is provided with blade connecting bushing, stretch in wheel hub at blade coupling shaft through blade connecting bushing, first set double-row conical bearing is provided with near blade connecting end between blade coupling shaft and blade connecting bushing, inside double-row conical bearing, outer ring is close to and is provided with bearing protecgulum, and inner blade coupling shaft is provided with fastening round nut; Outside is provided with oil sealing.The second cover double-row conical bearing is provided with near wheel hub connecting end between blade coupling shaft and blade connecting bushing, be close to outside double-row conical bearing and be provided with bearing bonnet, blade coupling shaft inside double-row conical bearing is provided with bearing inner race briquetting, blade connecting bushing inwall inside double-row conical bearing is provided with bearing outer ring and fixes briquetting, the blade coupling shaft inside bearing inner race briquetting is provided with fastening round nut.
Described two cover double-row conical bearings are installation form back-to-back, and the axial clearance of the bearing installed back-to-back is adjusted by cone spacer, can adjust span between two bearings before installation according to the requirement of product by spacer.
The middle-size and small-size wind-driven generator pitching blade connecting axle structure that the utility model obtains, adopt the blade connecting end of blade coupling shaft to adopt a set of double-row conical roller bearing, the bearing combined connecting structure adopting second to overlap double-row conical bearing with wheel hub connecting end, primarily of fan blade coupling shaft, two compositions such as cover double-row conical bearing, blade coupling shaft bearing sleeve etc.The blade connecting end of blade coupling shaft adopts a set of double-row conical bearing, and double-row conical bearing inner ring round nut is fixed, and determines the axial clearance of bearing, can bear radial force and bidirectional axial force; With the blade coupling shaft of wheel hub connecting end install second overlap double-row conical bearing, radial force and two-way end thrust can be born; Double-row conical bearing inner ring round nut is fixed, the friction tight annulus in outer ring coordinates fixing with wheel hub seam, realize blade coupling shaft axially without play, there will not be the independent rotation of certain blade (under change oar moment loading), one group of bearing combination of radial force and bi-directional axial thrust can be born again.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present utility model.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
Embodiment 1.
As shown in Figure 1, the middle-size and small-size wind-driven generator pitching blade connecting axle structure that the present embodiment describes, it mainly comprises wheel hub 12, and wheel hub 12 is connected with main shaft 13; Wheel hub 12 is provided with blade connecting bushing 3, blade coupling shaft 1 stretches in wheel hub 12 through blade connecting bushing 3, first set double-row conical bearing 4 is provided with near blade connecting end between blade coupling shaft 1 and blade connecting bushing 3, be close to inside double-row conical bearing 4 and be provided with bearing protecgulum 5, outside is provided with oil sealing 2; The second cover double-row conical bearing 8 is provided with near wheel hub 12 connecting end between blade coupling shaft 1 and blade connecting bushing 3, be close to outside double-row conical bearing 8 and be provided with bearing bonnet 7, blade coupling shaft 1 inside the second cover double-row conical bearing 8 is provided with bearing inner race briquetting 9, blade connecting bushing 3 inwall inside double-row conical bearing 8 is provided with bearing outer ring and fixes briquetting 10, the blade coupling shaft 1 inside bearing inner race briquetting 9 is provided with fastening round nut 11.
Described two double-row conical bearings 4 and 8 are installation form back-to-back.
Claims (2)
1. a middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure, it mainly comprises wheel hub, and wheel hub is connected with main shaft; Wheel hub is provided with blade connecting bushing, blade coupling shaft stretches in wheel hub through blade connecting bushing, it is characterized in that being provided with first set double-row conical bearing near blade connecting end between blade coupling shaft and blade connecting bushing, be close to inside double-row conical bearing and be provided with bearing protecgulum, outside is provided with oil sealing; The second cover double-row conical bearing is provided with near wheel hub connecting end between blade coupling shaft and blade connecting bushing, be close to outside double-row conical bearing and be provided with bearing bonnet, blade coupling shaft inside the second cover double-row conical bearing is provided with bearing inner race briquetting, blade connecting bushing inwall inside the second cover double-row conical bearing is provided with bearing outer ring and fixes briquetting, the blade coupling shaft inside bearing inner race briquetting is provided with fastening round nut.
2. middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure according to claim 1, is characterized in that two described cover double-row conical bearings are installation form back-to-back, and be provided with cone spacer between back-to-back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420661831.9U CN204386808U (en) | 2014-11-07 | 2014-11-07 | Middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420661831.9U CN204386808U (en) | 2014-11-07 | 2014-11-07 | Middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204386808U true CN204386808U (en) | 2015-06-10 |
Family
ID=53359534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420661831.9U Expired - Fee Related CN204386808U (en) | 2014-11-07 | 2014-11-07 | Middle-size and small-size wind-driven generator passive paddle changing blade connecting axle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204386808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119298A (en) * | 2016-11-29 | 2018-06-05 | 西门子公司 | Wind turbine |
-
2014
- 2014-11-07 CN CN201420661831.9U patent/CN204386808U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119298A (en) * | 2016-11-29 | 2018-06-05 | 西门子公司 | Wind turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20161107 |