CN106594238B - Dual-support output structure of wind power yaw gearbox - Google Patents
Dual-support output structure of wind power yaw gearbox Download PDFInfo
- Publication number
- CN106594238B CN106594238B CN201611236426.2A CN201611236426A CN106594238B CN 106594238 B CN106594238 B CN 106594238B CN 201611236426 A CN201611236426 A CN 201611236426A CN 106594238 B CN106594238 B CN 106594238B
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- China
- Prior art keywords
- box body
- roller bearing
- driving gear
- output shaft
- self
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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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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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
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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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
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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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 invention relates to a double-support output structure of a wind power yaw gearbox, which comprises a middle box body of the wind power yaw gearbox, an output shaft and a driving gear, and is characterized in that the output structure is also provided with a support lower box body with a meshing window, the meshing window is a fan-shaped opening, the support lower box body envelops the driving gear, and the driving gear of the driving gear is exposed from the meshing window; the output shaft penetrates through the driving gear, the output shaft positioned at one side of the driving gear is supported on the middle box body through a self-aligning roller bearing, a double-framework oil seal is arranged between the self-aligning roller bearing and the driving gear, the output shaft positioned at the other side of the driving gear is supported on the lower supporting box body through a cylindrical roller bearing, and a nilos sealing cover is arranged between the cylindrical roller bearing and the driving gear; the self-aligning roller bearing is lubricated by lubricating oil provided by an oil filling port of the middle box body, and the cylindrical roller bearing is lubricated by grease provided by an oil nozzle of the supporting lower box body.
Description
Technical Field
The invention relates to an output supporting structure of a gear reduction box, in particular to a double-support output structure of a wind power yaw gearbox.
Technical Field
The wind power yaw gearbox has the main function of adjusting the direction of the engine room by meshing and driving the output gear with the rotating gear in the fan, and finally enabling the fan engine room to always aim at the wind direction so as to maximally utilize the wind power. The diameter of the rotating gear is generally 2000-3000 mm, and the diameter of the yaw gear box output gear is generally 200-300 mm, so that the output gear can drive a relatively huge rotating gear to bear huge bearing pressure. And the fan on the high tower is often impacted by strong wind, and at the moment, the output gear in the yaw gearbox is required to play a role of reverse braking, and the bearing of the output structure by the high-strength load is certainly a high-difficulty challenge. Furthermore, the high-lying nacelle must also take into account the compactness of the structure and assembly of the components inside the nacelle. For the above reasons, a reasonable and safe support for the output structure of the yaw gearbox would be of great importance. The chinese patent No. cn201410304838.X provides a low-speed shaft support structure of a wind power gearbox, in which the downwind end of the low-speed shaft is supported by a pair of tapered roller bearings, and the downwind end is supported by a pair of spline pairs. Chinese patent No. CN201320121970.8 discloses a novel output mechanism of a wind power gear box, the output shaft is supported by a single-row cylindrical roller bearing and a cone roller bearing group, and the cone roller bearing group is configured by a large cone roller bearing and a small cone roller bearing. Chinese patent No. CN201320244864.9 discloses a wind power gear box output stage structure convenient for maintenance on the tower, the rear end of the output shaft extends out of the rear box body, and a front end bearing and a rear end bearing are respectively installed between the output shaft and the walls of the front end bearing hole and the rear end bearing hole of the rear box body. Chinese patent No. CN201110406672.9 provides a gear box, in which the output shaft is supported in a sub-box body through an output shaft bearing, and the sub-box body is detachable and disposed on the box body.
From the above, the bearing design of the output end is relatively single, and especially for a yaw gearbox on a fan, the form of single-side support of the output shaft is mainly considered. In a certain sense, the structure is relatively simple and easy to assemble, but for a yaw gearbox on a fan, the safety of the structure cannot be guaranteed, and the output end is easily caused to bear insufficient load, so that the output shaft is blocked after being deviated and cannot be transmitted or even broken. While some gearboxes provide better strength on the output structure support, the tightness or lubricity at the output structure is generally ignored. In view of the foregoing, there is a general need in the art for a more rational construction that effectively changes the state of the art.
Disclosure of Invention
The invention aims at: aiming at the problems in tightness or lubricity in the prior art, the double-support output structure of the wind power yaw gearbox is provided.
The purpose of the invention is realized in the following way: the double-support output structure of the wind power yaw gear box comprises a middle box body of the wind power yaw gear box, an output shaft and a driving gear, and is characterized in that the output structure is also provided with a support lower box body with a meshing window, the meshing window is a fan-shaped opening, the support lower box body envelops the driving gear, and driving teeth of the driving gear are exposed from the meshing window; the output shaft penetrates through the driving gear, the output shaft positioned at one side of the driving gear is supported on the middle box body through a self-aligning roller bearing, a double-framework oil seal is arranged between the self-aligning roller bearing and the driving gear, the output shaft positioned at the other side of the driving gear is supported on the lower supporting box body through a cylindrical roller bearing, and a nilos sealing cover is arranged between the cylindrical roller bearing and the driving gear; the self-aligning roller bearing is lubricated by lubricating oil provided by an oil filling port of the middle box body, and the cylindrical roller bearing is lubricated by grease provided by an oil nozzle of the supporting lower box body.
In the invention, the outer ring of the self-aligning roller bearing is limited at the spigot of the middle box body by Kong Dang, the inner ring is limited at the shaft shoulder of the output shaft by a round nut, and the cylindrical roller bearing is limited by the shaft shoulder of the output shaft and the spigot of the lower box body.
In the invention, the outer side of the supporting point of the cylindrical roller bearing for supporting the lower box body is provided with the grease cavity, and the three grease nozzles are uniformly distributed on the periphery of the grease cavity.
In the invention, the self-aligning roller bearing seat of the middle box body is of an I-shaped structure, the meshing window is a sector opening which occupies 1/2 circle of the supporting lower box body, the supporting lower box body is positioned on the middle box body corresponding to the self-aligning roller bearing seat, an eccentric ring is arranged outside the supporting lower box body, and after the driving gear is self-aligned by the eccentric ring, the wind power yaw gear box is fixed on the yaw adjusting mechanism box body of the fan through the mounting bolt of the eccentric ring.
The invention has the advantages that: because the cylindrical roller bearing and the self-aligning roller bearing are respectively arranged on two sides of the output shaft gear, the cylindrical roller bearing is positioned on the side of a far driving source, the cylindrical roller bearing is positioned on the side of a near driving source through the seam allowance of the lower box body and the shaft shoulder of the output shaft, and the self-aligning roller bearing is positioned on the side of a near driving source and is positioned by the middle box body, the Kong Dang and the round nut, so that the bearing is guaranteed to have better stability under high load. The bearing capacity of the selected bearing group forms of the cylindrical roller bearing and the self-aligning roller bearing is much larger than that of the tapered roller bearing group or the needle roller bearing group, and the bearing capacity of the bearing group on the output shaft is greatly improved by matching with the design of the bearing at the two ends of the output shaft gear.
The self-aligning roller bearing seat in the middle box body has the advantages that the self-aligning roller bearing seat in the middle box body is of an I-shaped structure, materials are reduced, the bearing capacity is improved, meanwhile, positioning support is provided for the double-framework oil seal and the self-aligning roller bearing, an I-shaped long spigot is arranged for positioning with the lower box body, the sealing performance is improved, and the danger of oil leakage is reduced. The lower box body is provided with a gear meshing window, the opening angle of the meshing window is 1/2 of the circumference of the lower box body, and the structure of the output shaft gear except the meshing part is coated in the lower box body, so that the tooth part of the output shaft gear is protected. The locating ring is arranged at the mounting bolt hole of the lower box body and is located with the spigot of the lower box body, and the locating ring is matched with the bolt hole of the lower box body to form an opening, so that the eccentricity of the lower box body is adjusted by adjusting the tightening strength of the mounting bolt, and the meshing side gap of the gear on the output shaft is adjusted.
The invention has the advantages that the Nilos sealing cover is arranged at the compression position of the cylindrical roller bearing and the shaft shoulder, and the cylindrical roller bearing and the compression force of the shaft shoulder of the output shaft are used for fixing the cylindrical roller bearing so as to prevent external dust from entering and prevent internal lubricating grease from leaking, and the structure is compact. The self-aligning roller bearing is characterized in that a double-framework oil seal is arranged between the self-aligning roller bearing and the output shaft gear, the self-aligning roller bearing is positioned through a spigot of the middle box body and internal oil pressure, and an O-shaped ring is arranged at a joint of the middle box body and the planetary part so as to prevent oil in the box body from leaking. Especially the glib is arranged on the lower box body and is arranged on the gear side of the far output shaft of the cylindrical roller bearing, and the number of the glib is three, so that the lubricating grease can be conveniently and rapidly replaced.
According to the invention, the bearing supporting positions are reasonably designed on the two sides of the output shaft, and the proper bearing group combination is selected, so that the bearing capacity of the output shaft under high load is improved. Through well box, lower box and the reasonable structural design of eccentric ring, improve the positioning accuracy and the job stabilization nature of bearing. And the structures and positions of the sealing system and the lubricating system are reasonably configured so as to improve the service lives of the output shaft and the integral gear box.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a right side end schematic view of the embodiment of fig. 1.
In the figure: 1. planetary part assembly; 2. a drive gear; 3. an oil filling port; 4. a middle box body; 5. supporting the lower box body; 6. an eccentric ring; 7. a nipple; 8. cylindrical roller bearings; 9. a nilos sealing cover; 10. double-skeleton oil seal; 11. a self-aligning roller bearing; 12. kong Dang; 13. a round nut; 14. an output shaft.
Detailed Description
The drawings disclose, without limitation, the basic structure of an embodiment of the invention, and the invention is further described below in conjunction with the drawings.
As can be seen from fig. 1 and 2, the wind power yaw gearbox comprises a middle box body 4 of the wind power yaw gearbox, an output shaft 14 of the planetary part device 1 and a driving gear 2, wherein the output structure is also provided with a supporting lower box body 5 containing a fan-shaped opening, the supporting lower box body 5 envelops the driving gear 2, and driving teeth of the driving gear 2 are exposed from a meshing window; the output shaft 14 penetrates through the driving gear 2, the output shaft 14 positioned on one side of the driving gear 2 is supported on the middle box body 4 through a self-aligning roller bearing 11, a double-framework oil seal 10 is arranged between the self-aligning roller bearing 11 and the driving gear 2, the output shaft 14 positioned on the other side of the driving gear 2 is supported on the lower supporting box body 5 through a cylindrical roller bearing 8, and a nilos sealing cover 9 is arranged between the cylindrical roller bearing 8 and the driving gear 2; the self-aligning roller bearing 11 is lubricated by lubricating oil provided by the oil filling port 3 of the middle box body, and the cylindrical roller bearing 8 is lubricated by grease provided by the oil nozzle 7 of the supporting lower box body 5.
In this embodiment, the outer ring of the self-aligning roller bearing 11 is limited at the spigot of the middle box 4 by Kong Dang, the inner ring is limited at the shoulder of the output shaft 14 by the round nut 13, and the cylindrical roller bearing 8 is limited by the shoulder of the output shaft 14 and the spigot of the supporting lower box 5.
In this embodiment, the outer side of the supporting point of the cylindrical roller bearing 8 of the lower supporting box 5 is provided with a grease cavity, and three grease nozzles 7 are uniformly distributed on the periphery of the grease cavity.
In this embodiment, the bearing seat of the aligning roller bearing 11 of the middle box 4 is in an i-shaped structure, the meshing window is a sector opening occupying 1/2 circle of the supporting lower box, the supporting lower box 5 is positioned on the middle box 4 corresponding to the aligning roller bearing seat, the eccentric ring 6 is further arranged outside the supporting lower box 5, and after the driving gear 2 is aligned by the eccentric ring 6, the wind power yaw gearbox is fixed on the yaw adjusting mechanism box of the fan through the mounting bolt of the eccentric ring 6.
In use, the driving source transmits power to the output shaft 14 through the planetary gear assembly 1 in the speed reducing system, so that the driving gear 2 on the output shaft 14 of the yaw gearbox is driven to rotate, and the direction change of the engine room is finally realized through the meshing transmission of the driving gear 2 on the output shaft 14 and the yaw rotating gear of the fan. The output shaft 14 is the largest part that is carried throughout the gearbox, supported for rotation mainly by two bearings.
In use, the positions of the two bearings are accurately positioned respectively through the supporting lower box body 5, the middle box body 4, the shaft shoulder of the output shaft 14, the hole baffle 12 and the round nut 13, so that the looseness of the bearings is effectively prevented, and the transmission stability is influenced. The planetary part 1 and the aligning roller bearing 11 are lubricated by lubricating oil, in the working process of the gear box, oil in the gear box oscillates, the double-framework oil seal 10 arranged between the aligning roller bearing 11 and the driving gear 2 is positioned by means of the spigot of the middle box 4 and the oil pressure, and an O-shaped ring is arranged at the joint of the middle box 4 and the planetary part 1, so that the sealing performance of the lubricating oil is effectively ensured. The drive gear 2 is respectively supported on both sides, and the cylindrical roller bearing 8 is lubricated by grease. The outside of the supporting point of the cylindrical roller bearing 8 for supporting the lower box body 5 is provided with a grease cavity, three grease nozzles 7 are uniformly distributed on the periphery of the grease cavity, grease is injected into the lower box body 5 through one of the grease nozzles 7, and old grease is extruded through the other two grease nozzles 7 to realize replacement. The Nilos seal 9 sealing cover arranged at the compression position of the cylindrical roller bearing 8 and the shaft shoulder is compact in structure and good in sealing performance, and can effectively seal the cylindrical roller bearing in a dustproof mode and prevent lubricating grease from leaking. The installation side clearance needs to be considered in the meshing between the yaw gearbox and the fan rotating gear, so that an eccentric ring 6 is arranged at the installation bolt hole of the lower box body 5, and the eccentric ring 6 and the bolt hole of the lower box body 5 are matched to form a hole. In actual operation, the tightness of the adjusting mounting bolts can control the eccentric amount of the supporting lower box body 5, so as to adjust the mounting side gap of the driving gear 2.
Claims (1)
1. The double-support output structure of the wind power yaw gear box comprises a middle box body of the wind power yaw gear box, an output shaft and a driving gear, and is characterized in that the output structure is also provided with a support lower box body with a meshing window, the meshing window is a fan-shaped opening, the support lower box body envelops the driving gear, and driving teeth of the driving gear are exposed from the meshing window; the output shaft penetrates through the driving gear, the output shaft positioned at one side of the driving gear is supported on the middle box body through a self-aligning roller bearing, a double-framework oil seal is arranged between the self-aligning roller bearing and the driving gear, the output shaft positioned at the other side of the driving gear is supported on the lower supporting box body through a cylindrical roller bearing, and a nilos sealing cover is arranged between the cylindrical roller bearing and the driving gear; the self-aligning roller bearing is lubricated by lubricating oil provided by an oil filling port of the middle box body, and the cylindrical roller bearing is lubricated by grease provided by an oil nozzle of the supporting lower box body;
the outer ring of the self-aligning roller bearing is limited at the spigot of the middle box body by Kong Dang, the inner ring of the self-aligning roller bearing is limited at the shaft shoulder of the output shaft by a round nut, and the cylindrical roller bearing is limited by the shaft shoulder of the output shaft and the spigot of the lower box body;
the outer side of the supporting point of the cylindrical roller bearing for supporting the lower box body is provided with a grease cavity, and three grease nozzles are uniformly distributed on the periphery of the grease cavity;
the self-aligning roller bearing seat of the middle box body is of an I-shaped structure, the meshing window is a sector opening occupying 1/2 circle of the supporting lower box body, the supporting lower box body is positioned on the middle box body corresponding to the self-aligning roller bearing seat, an eccentric ring is further arranged outside the supporting lower box body, and after the driving gear is aligned by the eccentric ring, the wind power yaw gearbox is fixed on a yaw adjusting mechanism box body of the fan through a mounting bolt of the eccentric ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236426.2A CN106594238B (en) | 2016-12-28 | 2016-12-28 | Dual-support output structure of wind power yaw gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236426.2A CN106594238B (en) | 2016-12-28 | 2016-12-28 | Dual-support output structure of wind power yaw gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594238A CN106594238A (en) | 2017-04-26 |
| CN106594238B true CN106594238B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611236426.2A Active CN106594238B (en) | 2016-12-28 | 2016-12-28 | Dual-support output structure of wind power yaw gearbox |
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| Country | Link |
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| CN (1) | CN106594238B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859733A (en) * | 2017-10-17 | 2018-03-30 | 太原重工股份有限公司 | Yawing reducer output device |
| CN109915586A (en) * | 2019-02-28 | 2019-06-21 | 江苏泰隆减速机股份有限公司 | A kind of bearing lubrication leakproof speed reducer |
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|---|---|---|---|---|
| CN201129436Y (en) * | 2007-12-17 | 2008-10-08 | 南京高速齿轮制造有限公司 | Output mechanism of wind power generator gear box |
| CN201448196U (en) * | 2009-09-01 | 2010-05-05 | 江苏泰隆减速机股份有限公司 | Wind power generation yawing speed reducing device |
| CN101865279A (en) * | 2010-06-02 | 2010-10-20 | 重庆齿轮箱有限责任公司 | Mechanism for balancing load of planetary gear by flexible pin shaft |
| CN203272744U (en) * | 2013-04-12 | 2013-11-06 | 南京高速齿轮制造有限公司 | Lubricating and sealing structure of wind power generation variable pitch gear case under high centrifugal acceleration working condition |
| CN203867787U (en) * | 2014-04-09 | 2014-10-08 | 南京高速齿轮制造有限公司 | Speed-up gearbox for half-direct-driven wind turbine generator |
| CN104500703A (en) * | 2014-12-26 | 2015-04-08 | 南京高速齿轮制造有限公司 | Output end of wind driven generator yawing and pitch-varying gear box |
| CN105673821A (en) * | 2016-02-26 | 2016-06-15 | 太原重工股份有限公司 | Device and device for assembling bearing pin shaft in wind power gear box |
| CN206439372U (en) * | 2016-12-28 | 2017-08-25 | 南京高速齿轮制造有限公司 | The dual-gripper export structure of wind power yawing gear-box |
-
2016
- 2016-12-28 CN CN201611236426.2A patent/CN106594238B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201129436Y (en) * | 2007-12-17 | 2008-10-08 | 南京高速齿轮制造有限公司 | Output mechanism of wind power generator gear box |
| CN201448196U (en) * | 2009-09-01 | 2010-05-05 | 江苏泰隆减速机股份有限公司 | Wind power generation yawing speed reducing device |
| CN101865279A (en) * | 2010-06-02 | 2010-10-20 | 重庆齿轮箱有限责任公司 | Mechanism for balancing load of planetary gear by flexible pin shaft |
| CN203272744U (en) * | 2013-04-12 | 2013-11-06 | 南京高速齿轮制造有限公司 | Lubricating and sealing structure of wind power generation variable pitch gear case under high centrifugal acceleration working condition |
| CN203867787U (en) * | 2014-04-09 | 2014-10-08 | 南京高速齿轮制造有限公司 | Speed-up gearbox for half-direct-driven wind turbine generator |
| CN104500703A (en) * | 2014-12-26 | 2015-04-08 | 南京高速齿轮制造有限公司 | Output end of wind driven generator yawing and pitch-varying gear box |
| CN105673821A (en) * | 2016-02-26 | 2016-06-15 | 太原重工股份有限公司 | Device and device for assembling bearing pin shaft in wind power gear box |
| CN206439372U (en) * | 2016-12-28 | 2017-08-25 | 南京高速齿轮制造有限公司 | The dual-gripper export structure of wind power yawing gear-box |
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| CN106594238A (en) | 2017-04-26 |
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Effective date of registration: 20190926 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant after: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning Science Park, Jiangning District, Jiangsu, Nanjing Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
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Effective date of registration: 20200515 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. |
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