CN209621531U - A kind of wind driven generator principal shaft and main axle structure - Google Patents
A kind of wind driven generator principal shaft and main axle structure Download PDFInfo
- Publication number
- CN209621531U CN209621531U CN201920371413.9U CN201920371413U CN209621531U CN 209621531 U CN209621531 U CN 209621531U CN 201920371413 U CN201920371413 U CN 201920371413U CN 209621531 U CN209621531 U CN 209621531U
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- China
- Prior art keywords
- main shaft
- shaft body
- driven generator
- mounting portion
- wind driven
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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
Abstract
The utility model discloses a kind of wind driven generator principal shafts, including main shaft body, one end of the main shaft body is provided with flange, the shaft shoulder is provided on the main shaft body, arc transition between the flange and the shaft shoulder, the first mounting portion for installing base bearing is provided on the main shaft body, the other end of the main shaft body is equipped with the second mounting portion for installing gear-box tensioner, and at least side of the first mounting portion or/and the second mounting portion is provided with release of radial load slot on the main shaft body.The invention also discloses a kind of wind driven generator principal shaft structures, including base bearing, gear-box tensioner and wind driven generator principal shaft as described above, the gear-box tensioner interference fit is installed on second mounting portion of described main shaft body one end, and the base bearing interference fit is installed on the first mounting portion of the main shaft body.The main shaft and main axle structure of the utility model all have the advantages that improving intensity, service life.
Description
Technical field
The utility model relates generally to technical field of wind power generating equipment, refers in particular to a kind of wind driven generator principal shaft and main shaft knot
Structure.
Background technique
Wind driven generator principal shaft is the key component of wind-driven generator transmission system, main shaft and base bearing and gear-box tensioner
By interference fit connection between set, there is very big edge stress in the intersection of interference and non-interference and concentrate, due to wind-force
Phenomena such as generating set bears biggish alternating load in operation, and main shaft interference edge is easy to appear fretting wear, fatigue, it is long
Time operation even will appear fatigue fracture.
Utility model content
The technical problems to be solved in the utility model is that for technical problem of the existing technology, this is practical new
Type provides the wind driven generator principal shaft and main axle structure that a kind of structure is simple, can be improved intensity and service life.
In order to solve the above technical problems, the utility model proposes technical solution are as follows:
A kind of wind driven generator principal shaft, including main shaft body, one end of the main shaft body are provided with flange, the main shaft
It is provided with the shaft shoulder on ontology, arc transition between the flange and the shaft shoulder is provided with for installing on the main shaft body
First mounting portion of base bearing, the other end of the main shaft body are equipped with the second mounting portion for installing gear-box tensioner,
At least side of the first mounting portion or/and the second mounting portion is provided with release of radial load slot on the main shaft body.
As a further improvement of the above technical scheme:
Release of radial load slot on the main shaft body in the setting of at least side of the first mounting portion is the first release of radial load slot,
The first release of radial load slot extends to first mounting portion so that the edge of base bearing is in hanging shape.
The first release of radial load slot is provided in the two sides of the first mounting portion on the main shaft body.
On the main shaft body in the second mounting portion side be arranged release of radial load slot be the second release of radial load slot, second
Release of radial load slot extends to second mounting portion so that the edge of gear-box tensioner is in hanging shape.
The section of the release of radial load slot is in arc-shaped.
Arc transition point between the flange and the shaft shoulder includes the sequentially connected transition arc structure of multistage.
The invention also discloses a kind of wind driven generator principal shaft structure, including base bearing, gear-box tensioner and such as
The upper wind driven generator principal shaft, the gear-box tensioner interference fit are installed on second peace of described main shaft body one end
In dress portion, the base bearing interference fit is installed on the first mounting portion of the main shaft body.
As a further improvement of the above technical scheme:
The base bearing both ends and the edge of main shaft body interference fit are in arc transition.
One end of the gear-box tensioner and the edge of main shaft body interference fit are in arc transition.
It is provided with axle sleeve on the main shaft body of the base bearing two sides, is provided on the main shaft body of the base bearing side
The locking nut being connect with the axle sleeve, for carrying out axial limiting to base bearing.
Compared with the prior art, the advantages of the utility model are:
The wind driven generator principal shaft of the utility model, in the first mounting portion or/and the second mounting portion on main shaft body
At least side release of radial load slot that is provided with annular, can be avoided or reduces main shaft body and each assembly parts (including base bearing and
Gear-box tensioner etc.) interference fit installation when, in the edge stress that the intersection of interference and non-interference generates, make stress to unloading
Carry slot transfer, change main shaft interfering surfaces stress distribution, thus avoid or reduce main shaft interference edge appearance fretting wear,
Phenomena such as tired, the service life of lifting spindle ontology.
The utility model wind driven generator principal shaft, in the design of each section of carry out spron of main shaft body and arc transition,
The fatigue resistance for improving entire main shaft body effectively improves main shaft body whole design intensity, improves its service life.
The wind driven generator principal shaft structure of the utility model is arranged at the edge of main shaft body and each assembly parts interference fit
Spron, and the edge of each assembly parts is arranged to arc transition (being also overhang structure), change main shaft body and is interference fitted table
The stress distribution in face shifts stress to spron, reduces interference edge stress.In the premise for not changing the main shaft body diameter of axle
Under, main shaft body is improved by integrated optimization by structures such as the above spron, overhang structure and multi-section circular arc transition
Fretting Fatigue Strength solves main shaft fatigue bottleneck problem, i.e., does not increase main shaft body radial dimension and cost and solve main shaft
Tired bottleneck problem greatly reduces the size and cost of driving chain of wind driven generator system.
Detailed description of the invention
Fig. 1 is the main axle structure schematic diagram of the utility model.
Fig. 2 is the enlarged drawing in Fig. 1 at A.
Fig. 3 is the partial enlarged view in Fig. 1 at arc transition part.
Fig. 4 is the structural schematic diagram of the utility model main axle structure.
Fig. 5 is the partial enlarged view in Fig. 4 at B.
Figure label indicates: 1, main shaft body；101, flange；102, the shaft shoulder；103, arc transition part；104, the first peace
Dress portion；105, the second mounting portion；106, release of radial load slot；1061, the first release of radial load slot；1062, the second release of radial load slot；2,
Base bearing；3, axle sleeve；4, locking nut；5, gear-box tensioner.
Specific embodiment
The utility model is further described below in conjunction with Figure of description and specific embodiment.
As shown in Figure 1 to Figure 3, the wind driven generator principal shaft of the present embodiment, including main shaft body 1, one end of main shaft body 1
It is provided with flange 101, the other end of main shaft body 1 is equipped with the second mounting portion 105 for installing gear-box tensioner 5, main shaft
Ontology 1 is being provided with the shaft shoulder 102, arc transition between flange 101 and the shaft shoulder 102, main shaft body 1 on 101 one end of flange
On be provided with the first mounting portion 104 for installing base bearing 2, in the first mounting portion 104 or/and the second peace on main shaft body 1
At least side in dress portion 105 is provided with the release of radial load slot 106 of annular.The wind driven generator principal shaft of the utility model, in main shaft
The release of radial load slot 106 of annular is provided on ontology 1 in at least side of the first mounting portion 104 or/and the second mounting portion 105,
It can be avoided or reduce main shaft body 1 and each assembly parts (including base bearing 2 and gear-box tensioner 5 etc.) interference fit is installed
When, it in the edge stress that the intersection of interference and non-interference generates, shifts stress to spron, changes 1 interference of main shaft body
The stress distribution on surface, so that phenomena such as avoiding or reducing the fretting wear of 1 interference edge of main shaft body appearance, fatigue, is promoted
The service life of main shaft body 1.
In the present embodiment, it is in the release of radial load slot 106 that at least side of the first mounting portion 104 is arranged on main shaft body 1
First release of radial load slot 1061, the first release of radial load slot 1061 extends to the first mounting portion 104 so that the edge of base bearing 2 is in outstanding
Empty shape, as shown in Fig. 2, the structure of other side is identical with this.Specifically, the section of the first release of radial load slot 1061 is in arc-shaped
Or U-shaped shape or other shapes.In addition, being in the release of radial load slot 106 that the side of the second mounting portion 105 is arranged on main shaft body 1
Second release of radial load slot 1062, the second release of radial load slot 1062 extend to the second mounting portion 105 so that gear-box tensioner 5 side
Edge is in hanging shape, and specific structure is referring to shown in Fig. 2.
In the present embodiment, the arc transition part 103 between flange 101 and the shaft shoulder 102 includes the sequentially connected mistake of multistage
Cross arc structure.Since 101 side of flange can be passed to certain alternating load and certain deformation is born, deformation can be through circular arc mistake
It crosses part 103 to transmit to 2 side of base bearing, the intersection being interference fitted so as to cause base bearing 2 can also have certain stress
It concentrates, and arc transition part 103 is arranged to the sequentially connected transition arc structure of multistage, effectively can uniformly divide deformation
Cloth avoids concentrating on a certain part and making phenomena such as fretting wear, fatigue is locally present, improves main shaft in transition arc structure
The rigidity of ontology 1.
The wind driven generator principal shaft of the utility model, in 1 each section of progress release of radial load slot 106 of main shaft body and circular arc mistake
The design crossed improves the fatigue resistance of entire main shaft body 1, effectively improves 1 whole design intensity of main shaft body, improves it
Service life.
As shown in Figure 4 and Figure 5, the invention also discloses a kind of wind driven generator principal shaft structure, including base bearing 2,
Gear-box tensioner 5 and wind driven generator principal shaft as described above, the interference fit of gear-box tensioner 5 are installed on main shaft body 1
On second mounting portion 105 of one end, the interference fit of base bearing 2 is installed on the first mounting portion 104 of main shaft body 1, base bearing 2
It is provided with axle sleeve 3 on the main shaft body 1 of two sides, is provided with the locking connecting with axle sleeve 3 on the main shaft body 1 of 2 side of base bearing
Nut 4, for carrying out axial limiting to base bearing 2.The wind driven generator principal shaft structure of the utility model equally has master as above
Advantage described in axis, simple structure and reasonable design.
As shown in figure 5, the edge of 2 both ends of base bearing and the interference fit of main shaft body 1 is in arc transition in the present embodiment,
So as to avoid 2 both ends of base bearing from contacting with main shaft body 1 in line, the concentration of stress is further avoided.In addition, other interference
The edge that one end of the component (such as gear-box tensioner 5) of assembly and main shaft body 1 are interference fitted also is in arc transition.
The wind driven generator principal shaft structure of the utility model is set at the edge that main shaft body 1 is interference fitted with each assembly parts
Release of radial load slot 106 is set, and the edge of each assembly parts is arranged to arc transition (being also overhang structure), changes main shaft body 1
It is interference fitted the stress distribution on surface, shifts stress to release of radial load slot 106, reduces interference edge stress.Do not changing master
Under the premise of 1 diameter of axle of shaft body, pass through the above release of radial load slot 106, overhang structure and the isostructural collection of multi-section circular arc transition
At optimization, the Fretting Fatigue Strength of main shaft body 1 is improved, main axle structure fatigue bottleneck problem is solved, i.e., does not increase main shaft sheet
1 radial dimension of body and cost and solve main axle structure fatigue bottleneck problem, greatly reduce driving chain of wind driven generator system
Size and cost.
Although the utility model has been disclosed with preferred embodiment as above, it is not intended to limit the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above
Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, all contents without departing from technical solutions of the utility model, according to the utility model technical spirit to the above reality
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model protection.
Claims (10)
1. one end of a kind of wind driven generator principal shaft, including main shaft body (1), the main shaft body (1) is provided with flange
(101), it is provided with the shaft shoulder (102) on the main shaft body (1), circular arc mistake between the flange (101) and the shaft shoulder (102)
It crosses, the first mounting portion (104) for installing base bearing (2), the main shaft body (1) is provided on the main shaft body (1)
The other end be equipped with the second mounting portion (105) for installing gear-box tensioner (5), which is characterized in that the main shaft body
(1) at least side of the first mounting portion (104) or/and the second mounting portion (105) is provided with release of radial load slot (106) on.
2. wind driven generator principal shaft according to claim 1, which is characterized in that in the first peace on the main shaft body (1)
The release of radial load slot (106) of at least side setting in dress portion (104) is the first release of radial load slot (1061), and first radial direction is unloaded
It carries slot (1061) and extends to first mounting portion (104) so that the edge of base bearing (2) is in hanging shape.
3. wind driven generator principal shaft according to claim 2, which is characterized in that in the first peace on the main shaft body (1)
The two sides in dress portion (104) are provided with the first release of radial load slot (1061).
4. wind driven generator principal shaft according to claim 1 or 2 or 3, which is characterized in that on the main shaft body (1) in
The release of radial load slot (106) of the side setting of second mounting portion (105) is the second release of radial load slot (1062), the second release of radial load
Slot (1062) extends to second mounting portion (105) so that the edge of gear-box tensioner (5) is in hanging shape.
5. wind driven generator principal shaft according to claim 1 or 2 or 3, which is characterized in that the release of radial load slot (106)
Section be in arc-shaped.
6. wind driven generator principal shaft according to claim 1 or 2 or 3, which is characterized in that the flange (101) with it is described
Arc transition part (103) between the shaft shoulder (102) includes the sequentially connected transition arc structure of multistage.
7. a kind of wind driven generator principal shaft structure, which is characterized in that including base bearing (2), gear-box tensioner (5) and such as right
It is required that wind driven generator principal shaft described in any one of 1 to 6, gear-box tensioner (5) interference fit is installed on described
On second mounting portion (105) of main shaft body (1) one end, base bearing (2) interference fit is installed on the main shaft body (1)
The first mounting portion (104) on.
8. wind driven generator principal shaft structure according to claim 7, which is characterized in that base bearing (2) both ends and institute
The edge of main shaft body (1) interference fit is stated in arc transition.
9. wind driven generator principal shaft structure according to claim 7 or 8, which is characterized in that the gear-box tensioner (5)
One end and the main shaft body (1) interference fit edge be in arc transition.
10. wind driven generator principal shaft structure according to claim 7 or 8, which is characterized in that base bearing (2) two sides
Main shaft body (1) on be provided with axle sleeve (3), be provided with and the axle sleeve on the main shaft body (1) of base bearing (2) side
(3) locking nut (4) connected, for carrying out axial limiting to base bearing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371413.9U CN209621531U (en) | 2019-03-22 | 2019-03-22 | A kind of wind driven generator principal shaft and main axle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920371413.9U CN209621531U (en) | 2019-03-22 | 2019-03-22 | A kind of wind driven generator principal shaft and main axle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209621531U true CN209621531U (en) | 2019-11-12 |
Family
ID=68457474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920371413.9U Active CN209621531U (en) | 2019-03-22 | 2019-03-22 | A kind of wind driven generator principal shaft and main axle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209621531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235745A (en) * | 2022-07-08 | 2022-10-25 | 中国航发沈阳发动机研究所 | Method for improving fatigue strength of working blade of high-pressure turbine |
| WO2023071041A1 (en) * | 2021-10-29 | 2023-05-04 | 新疆金风科技股份有限公司 | Shaft structure, wind turbine shaft system, and wind turbine |
-
2019
- 2019-03-22 CN CN201920371413.9U patent/CN209621531U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071041A1 (en) * | 2021-10-29 | 2023-05-04 | 新疆金风科技股份有限公司 | Shaft structure, wind turbine shaft system, and wind turbine |
| CN115235745A (en) * | 2022-07-08 | 2022-10-25 | 中国航发沈阳发动机研究所 | Method for improving fatigue strength of working blade of high-pressure turbine |
| CN115235745B (en) * | 2022-07-08 | 2023-06-02 | 中国航发沈阳发动机研究所 | Method for improving fatigue strength of working blade of high-pressure turbine |
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