CN110686071A - Planet carrier supporting structure and gear box - Google Patents
Planet carrier supporting structure and gear box Download PDFInfo
- Publication number
- CN110686071A CN110686071A CN201911156419.5A CN201911156419A CN110686071A CN 110686071 A CN110686071 A CN 110686071A CN 201911156419 A CN201911156419 A CN 201911156419A CN 110686071 A CN110686071 A CN 110686071A
- Authority
- CN
- China
- Prior art keywords
- planet carrier
- bearing
- ring
- connecting part
- bearings
- 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
- 238000007789 sealing Methods 0.000 claims description 32
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
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- 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
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- 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
-
- 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
- F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a planet carrier supporting structure and a gear box, belonging to the technical field of mechanical transmission, wherein a planet carrier comprises a main body part, a first connecting part arranged at one end of the main body part and a second connecting part arranged at the other end of the main body part, and the outer diameter of the first connecting part is larger than that of the second connecting part; the planet carrier supporting structure comprises a shell, a transparent cover and a pair of bearings, wherein the shell surrounds the radial outer side of the planet carrier; the transparent cover is sleeved on the first connecting part and is fixedly connected with the shell; the pair of bearings is arranged on the second connecting part and positioned on the inner side of the shell. The gearbox comprises a planet carrier support structure as described above. Through all setting up a pair of bearing on the second connecting portion of planet frame for the axial dimension of bearing reduces, and has left out a bearing frame, and then has alleviateed weight and volume, has reduced manufacturing cost, makes compact structure, simple to operate.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to a planet carrier supporting structure and a gear box.
Background
Wind power is used as a renewable energy source, has strong advantages for power generation, and has the advantages of low construction cost, small occupied area, convenience in maintenance and the like compared with thermal power generation, solar energy, hydraulic power generation and other energy sources. In the wind driven generator, the gear box is a key component of the wind driven generator, and with the rapid development of the wind power generation industry, the high-power wind driven generator is more and more favored.
The existing gear box of the high-power wind driven generator generally adopts a structure of two-stage planetary gear trains and a final-stage parallel speed-increasing stage, the whole weight of the gear box is generally more than 50 tons, wherein the weight of the planetary carrier is several tons, and the weight and the volume are very large. In the conventional structure, as shown in fig. 1, two bearings 20 are respectively disposed at the left and right ends of the planet carrier 10 to support the planet carrier 10, so that two bearing seats need to be disposed on the box body 30, and since the shaft diameter of the left end of the planet carrier 10 is large, the size of the required bearing 20 is also very large, and it needs to be customized, the cost is very high, and a large space is also occupied.
Disclosure of Invention
The invention aims to provide a planet carrier supporting structure and a gear box, and aims to solve the technical problems that in the prior art, a planet carrier and a bearing occupy large space, are heavy and are high in cost.
As the conception, the technical scheme adopted by the invention is as follows:
a planet carrier supporting structure comprises a main body part, a first connecting part and a second connecting part, wherein the first connecting part is arranged at one end of the main body part, the second connecting part is arranged at the other end of the main body part, and the outer diameter of the first connecting part is larger than that of the second connecting part; the planet carrier support structure includes:
the shell surrounds the radial outer side of the planet carrier;
the transparent cover is sleeved on the first connecting part and is fixedly connected with the shell;
and a pair of bearings disposed on the second connection portion and located inside the housing.
The inner side of the shell is provided with a flange, the second connecting portion is provided with a bulge, the outer ring of the bearing located on the inner side is abutted to the flange, and the inner ring of the bearing located on the inner side is abutted to the bulge.
The bearing comprises a shell, a bearing body and a first limiting plate, wherein the bearing body is provided with an outer ring and an inner ring, the outer ring is provided with a first connecting portion, the first limiting plate is connected with the shell and is abutted to the outer ring of the bearing, the second connecting portion is connected with the second limiting plate and is abutted to the inner ring of the bearing, and the inner ring is located on the outer side of the bearing.
The bearing assembly further comprises a spacer ring, wherein the spacer ring is located between the two bearings and is abutted to the outer ring of the bearing.
The bearing comprises two bearings and also comprises a distance ring, wherein the distance ring is positioned between the two bearings and is abutted to the inner ring of each bearing.
The shell comprises an upper shell and a lower shell, the upper shell surrounds the radial outer side of the first connecting portion, and the lower shell surrounds the radial outer side of the second connecting portion and is matched with the bearing.
The transparent cover is fixedly connected with the upper shell and is in sealing connection with the first connecting part.
The transparent cover is provided with a plurality of sealing cavities from the outer side to the inner side, each sealing cavity is internally provided with a sealing ring, a groove is formed in the position, corresponding to the sealing ring, of the first connecting portion, and the sealing ring is clamped in the groove.
The sealing plate is sleeved on the first connecting portion and connected with the outer side of the transparent cover.
A gearbox comprising a planet carrier support structure as described above.
The invention has the beneficial effects that:
the invention provides a planet carrier supporting structure, wherein a shell surrounds the radial outer side of a planet carrier, a transparent cover supports a first connecting part of the planet carrier, and a bearing supports a second connecting part of the planet carrier; because the external diameter of the first connecting portion of planet carrier is greater than the external diameter of second connecting portion, through all setting up a pair of bearing on the second connecting portion of planet carrier for the axial dimension of bearing reduces, and has left out a bearing frame, and then has lightened weight and volume, has reduced manufacturing cost, makes compact structure, simple to operate.
Drawings
FIG. 1 is a cross-sectional view of a prior art gearbox;
FIG. 2 is a cross-sectional view of a gearbox provided by an embodiment of the present invention;
FIG. 3 is an enlarged view at A of FIG. 2;
fig. 4 is an enlarged view at B of fig. 2;
FIG. 5 is a cross-sectional view of a carrier of a gearbox provided in accordance with an embodiment of the present invention.
In the figure:
10. a planet carrier; 20. a bearing; 30. a box body;
11. a main body portion; 12. a first connection portion; 13. a second connecting portion;
21. an upper housing; 22. a lower housing;
3. a transparent cover; 31. sealing the cavity;
4. a bearing;
5. a sealing plate;
61. a first limit plate; 62. a second limiting plate;
71. a space ring; 72. a distance ring;
8. a planet wheel;
9. a ring gear.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 2 to 5, an embodiment of the invention provides a gearbox comprising a planet carrier support structure for providing support to a planet carrier. The planet carrier comprises a main body part 11, a first connecting part 12 arranged at one end of the main body part 11 and a second connecting part 13 arranged at the other end of the main body part 11, wherein the outer diameter of the first connecting part 12 is larger than that of the second connecting part 13. The planet carrier supporting structure comprises a shell, a transparent cover 3 and a bearing 4, wherein the shell surrounds the radial outer side of the planet carrier, the transparent cover 3 is sleeved on the first connecting portion 12 and is fixedly connected with the shell, and the pair of bearings 4 is arranged on the second connecting portion 13 and is positioned on the inner side of the shell. Since many of the components are axisymmetric in structure, only half portions are shown in the drawings for simplicity.
The shell surrounds the radial outer side of the planet carrier, the transparent cover 3 supports the first connecting part 12 of the planet carrier, and the bearing 4 supports the second connecting part 13 of the planet carrier; because the external diameter of the first connecting portion 12 of planet carrier is greater than the external diameter of the second connecting portion 13, through all setting up a pair of bearing 4 on the second connecting portion 13 of planet carrier for the axial dimensions of bearing 4 reduces, and has left out a bearing frame, and then has lightened weight and volume, has reduced manufacturing cost, makes compact structure, simple to operate.
The casing is the components of a whole that can function independently structure, including upper casing 21 and lower casing 22, and upper casing 21 encircles in the radial outside of first connecting portion 12, and lower casing 22 encircles in the radial outside of second connecting portion 13 and cooperates with bearing 4. The upper shell 21 and the lower shell 22 are arranged, so that the installation and the disassembly are convenient, the weight of a single part is reduced, and the space is fully utilized.
The transparent cover 3 is fixedly connected with the upper shell 21 and is hermetically connected with the first connecting part 12. The first connecting portion 12 is exposed outside the upper case 21 through the transparent cover 3 for assembly with other components. Through sealing connection between lid 3 and first connecting portion 12, prevent in dust or the impurity gets into the casing, also avoid the inside lubricating oil of casing to reveal.
A plurality of sealing cavities 31 are formed in the transparent cover 3 from the outer side to the inner side, a sealing ring is arranged in each sealing cavity 31, a groove is formed in the position, corresponding to the sealing ring, of the first connecting portion 12, and the sealing ring is clamped in the groove. The plurality of sealing cavities 31 form a multi-layer seal, and have a better sealing effect. In the present embodiment, three seal cavities 31 are opened from the outside to the inside of the transparent cover 3. At least one sealing ring is arranged in each sealing cavity 31, and two sealing rings are arranged in some sealing cavities 31.
In order to enhance the sealing performance, the sealing plate 5 is further included, and the sealing plate 5 is sleeved on the first connecting portion 12 and connected with the outer side of the transparent cover 3 to prevent larger dust or impurities from entering the sealing cavity 31.
Since the bearing 4 is provided on the second connecting portion 13 of the carrier, the upper case 21 fitted with the first connecting portion 12 does not need to be provided with a bearing housing, thereby simplifying the structure and reducing the weight.
Two bearings 4 are arranged along the axial direction of the second connecting portion 13, one bearing 4 is located on the inner side, the other bearing 4 is located on the outer side, and the two bearings 4 are arranged back to back. A flange is provided on the inner side of the housing, a protrusion is provided on the second connecting portion 13, the outer ring of the bearing 4 located on the inner side abuts against the flange, and the inner ring of the bearing 4 located on the inner side abuts against the protrusion. The flange is matched with the bulge to limit the bearing 4 at the inner side. Specifically, a flange is provided on the lower case 22, and a projection is provided circumferentially around the outer periphery of the second connecting portion 13.
The planet carrier supporting structure further comprises a first limiting plate 61 and a second limiting plate 62, the first limiting plate 61 is connected with the shell and is abutted to the outer ring of the bearing 4 located on the outer side, and the second limiting plate 62 is connected with the second connecting portion 13 and is abutted to the inner ring of the bearing 4 located on the outer side. The first limit plate 61 is matched with the second limit plate 62 to limit the bearing 4 at the outer side.
The shapes of the first limiting plate 61 and the second limiting plate 62 can be set according to actual conditions, and can be annular, or a segment of circular arc, which is not limited herein.
The planet carrier support structure further comprises a spacer ring 71, and the spacer ring 71 is located between the two bearings 4 and is abutted against the outer ring of the bearing 4 so as to limit the outer ring of the bearing 4.
The spacer 71 is annularly fitted around the second connecting portion 13, the outer peripheral surface of the spacer 71 abuts against the housing, and the inner diameter of the spacer 71 does not affect the rotation of the roller of the bearing 4. The spacer 71 serves as a positioning function so that the two bearings 4 have a certain interval therebetween in the axial direction.
The planet carrier support structure further comprises a distance ring 72, the distance ring 72 being located between the two bearings 4 and abutting against the inner ring of the bearing 4 to limit the inner ring of the bearing 4.
The distance ring 72 is annularly fitted to the second connecting portion 13, an inner peripheral surface of the distance ring 72 abuts against the second connecting portion 13, and an outer diameter of the distance ring 72 does not affect rotation of the roller of the bearing 4. The distance ring 72 serves for positioning so that there is a certain axial spacing between the two bearings 4. The distance ring 72 is matched with the distance ring 71 to limit the inner ring and the outer ring of the bearing 4, so that the bearing 4 is stably installed.
The gearbox further comprises a planet wheel 8 and a gear ring 9, the planet wheel 8 is rotatably arranged on the planet carrier, the gear ring 9 is fixedly connected with the shell, and the planet wheel 8 is meshed with the gear ring 9. Specifically, the planet gears 8 are arranged on the main body portion 11, the gear ring 9 is arranged between the upper shell 21 and the lower shell 22, the gear ring 9 is connected with the upper shell 21 through bolts, and the gear ring 9 is connected with the lower shell 22 through bolts, so that the mounting and the dismounting are convenient.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A planet carrier supporting structure comprises a main body part (11), a first connecting part (12) arranged at one end of the main body part (11) and a second connecting part (13) arranged at the other end of the main body part (11), wherein the outer diameter of the first connecting part (12) is larger than that of the second connecting part (13); characterized in that the planet carrier support structure comprises:
the shell surrounds the radial outer side of the planet carrier;
the transparent cover (3) is sleeved on the first connecting part (12) and is fixedly connected with the shell;
and a pair of bearings (4) provided on the second connection portion (13) and located inside the housing.
2. Planet carrier support structure according to claim 1, characterised in that the housing is provided with a flange on the inside, that the second connecting portion (13) is provided with a projection against which the outer ring of the bearing (4) on the inside abuts, and that the inner ring of the bearing (4) on the inside abuts.
3. Planet carrier support structure according to claim 1, further comprising a first limit plate (61) and a second limit plate (62), the first limit plate (61) being connected with the housing and abutting against the outer ring of the bearing (4) located outside, the second limit plate (62) being connected with the second connection portion (13) and abutting against the inner ring of the bearing (4) located outside.
4. Planet carrier support structure according to claim 1, further comprising a spacer (71), the spacer (71) being located between the two bearings (4) and abutting the outer ring of the bearings (4).
5. Planet carrier support structure according to claim 1, characterised in that it further comprises a distance ring (72), which distance ring (72) is located between the two bearings (4) and abuts against the inner ring of the bearings (4).
6. Planet carrier support structure according to any one of claims 1 to 5, characterised in that the housing comprises an upper housing (21) and a lower housing (22), the upper housing (21) surrounding the radially outer side of the first connection portion (12), the lower housing (22) surrounding the radially outer side of the second connection portion (13) and cooperating with the bearing (4).
7. Planet carrier support structure according to claim 6, characterized in that the transparent cover (3) is fixedly connected with the upper housing (21) and sealingly connected with the first connection portion (12).
8. The planet carrier supporting structure according to claim 7, wherein the transparent cover (3) has a plurality of sealing cavities (31) formed from the outer side to the inner side, each sealing cavity (31) has a sealing ring disposed therein, and the first connecting portion (12) has a groove disposed at a position corresponding to the sealing ring, and the sealing ring is clamped in the groove.
9. The planet carrier support structure according to claim 7, further comprising a sealing plate (5), wherein the sealing plate (5) is sleeved on the first connecting portion (12) and connected with the outer side of the transparent cover (3).
10. Gearbox, characterized in that it comprises a planet carrier support according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156419.5A CN110686071A (en) | 2019-11-22 | 2019-11-22 | Planet carrier supporting structure and gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156419.5A CN110686071A (en) | 2019-11-22 | 2019-11-22 | Planet carrier supporting structure and gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110686071A true CN110686071A (en) | 2020-01-14 |
Family
ID=69117361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911156419.5A Pending CN110686071A (en) | 2019-11-22 | 2019-11-22 | Planet carrier supporting structure and gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110686071A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022222624A1 (en) * | 2021-04-21 | 2022-10-27 | 采埃孚(天津)风电有限公司 | Planetary carrier and gear box |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191532A (en) * | 2007-12-17 | 2008-06-04 | 南京高速齿轮制造有限公司 | Hybrid driving type wind motor increasing gear case |
| CN202140547U (en) * | 2011-07-06 | 2012-02-08 | 重庆齿轮箱有限责任公司 | Gear case planet wheel supporting structure |
| CN102678900A (en) * | 2011-03-16 | 2012-09-19 | 诺迈士科技有限公司 | Gear box, seal, and cover arrangements |
| CN202579055U (en) * | 2012-05-03 | 2012-12-05 | 南京高速齿轮制造有限公司 | Speed-increasing gearbox for high-power wind driven generator |
| WO2015003706A1 (en) * | 2013-07-12 | 2015-01-15 | Schaeffler Technologies Gmbh & Co. Kg | Bearing arrangement for a planetary gearbox of a wind turbine |
| CN110185783A (en) * | 2019-06-26 | 2019-08-30 | 南京高速齿轮制造有限公司 | The low speed end structure of epicyclic gearbox |
| CN210978492U (en) * | 2019-11-22 | 2020-07-10 | 南京高速齿轮制造有限公司 | Planet carrier supporting structure and gear box |
-
2019
- 2019-11-22 CN CN201911156419.5A patent/CN110686071A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191532A (en) * | 2007-12-17 | 2008-06-04 | 南京高速齿轮制造有限公司 | Hybrid driving type wind motor increasing gear case |
| CN102678900A (en) * | 2011-03-16 | 2012-09-19 | 诺迈士科技有限公司 | Gear box, seal, and cover arrangements |
| US20120238402A1 (en) * | 2011-03-16 | 2012-09-20 | Christopher James Blockley | Gear box, seal, and cover arrangements |
| CN202140547U (en) * | 2011-07-06 | 2012-02-08 | 重庆齿轮箱有限责任公司 | Gear case planet wheel supporting structure |
| CN202579055U (en) * | 2012-05-03 | 2012-12-05 | 南京高速齿轮制造有限公司 | Speed-increasing gearbox for high-power wind driven generator |
| WO2015003706A1 (en) * | 2013-07-12 | 2015-01-15 | Schaeffler Technologies Gmbh & Co. Kg | Bearing arrangement for a planetary gearbox of a wind turbine |
| CN110185783A (en) * | 2019-06-26 | 2019-08-30 | 南京高速齿轮制造有限公司 | The low speed end structure of epicyclic gearbox |
| CN210978492U (en) * | 2019-11-22 | 2020-07-10 | 南京高速齿轮制造有限公司 | Planet carrier supporting structure and gear box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022222624A1 (en) * | 2021-04-21 | 2022-10-27 | 采埃孚(天津)风电有限公司 | Planetary carrier and gear box |
| US12098767B2 (en) | 2021-04-21 | 2024-09-24 | Zf Wind Power (Tianjin) Co., Ltd. | Planetary carrier and gear box |
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Effective date of registration: 20200507 Address after: 211100 No. 30 Houjiao Road, High-tech Park, Jiangning District, Nanjing City, Jiangsu Province Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100 No. 30 Houjiao Road, High-tech Park, Jiangning District, Nanjing City, Jiangsu Province Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. |