CN103016275B - A kind of sliding bearing formula wind driven generator unit yaw system and friction plate replacing options - Google Patents
A kind of sliding bearing formula wind driven generator unit yaw system and friction plate replacing options Download PDFInfo
- Publication number
- CN103016275B CN103016275B CN201210470772.2A CN201210470772A CN103016275B CN 103016275 B CN103016275 B CN 103016275B CN 201210470772 A CN201210470772 A CN 201210470772A CN 103016275 B CN103016275 B CN 103016275B
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- bearing
- friction plate
- supporting plane
- bearer ring
- sliding bearing
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- 244000309464 bull Species 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 7
- 238000013016 damping Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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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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Abstract
The invention discloses a kind of sliding bearing formula wind driven generator unit yaw system, for connecting fan tower cylinder and frame, comprise bearing bull gear, bearer ring, bearing shaft is to supporting plane friction plate, the radial supporting plane friction plate of bearing, off-course brake and driftage driving mechanism, wherein: described its lower end of bearing bull gear is connected with tower cylinder upper end, its upper end is by the bearing shaft that is connected with it lower end to supporting plane friction plate frames, the gearwheel of its side engages with the driftage driving mechanism be fixed in frame, its opposite side to be coordinated with the circumference of bearer ring by radial supporting plane friction plate of bearing of being connected with it and slides, described bearer ring upper end is connected to frame lower end, and off-course brake is connected to bearer ring lower end and acts on bearing bull gear, and entirety has simply, the practical and feature that cost is low, and can reduce off-course brake quantity, the invention also discloses the friction plate replacing options of said system, friction plate adopts combining form simultaneously, convenient installation and replacing.
Description
Technical field
The present invention relates to technical field of wind power, particularly, relate to a kind of sliding bearing formula wind driven generator unit yaw system and friction plate replacing options.
Background technique
At present, the yaw system of large-scale wind power generating set adopts rolling type driftage bearing mostly.The cost compare of rolling type driftage bearing itself is high.Meanwhile, when adopting rolling type driftage bearing, yaw system must configure the off-course brake of a greater number, to ensure that unit makes cabin can ensure certain dimensional orientation transfixion when not doing yawing rotation.In addition, also need when unit does yawing rotation to apply certain yaw damping moment, to ensure that unit energy does stable yawing rotation.Meanwhile, the axis of rolling promises configuration automatic lubricating system to ensure the lubrication of rolling element.
Summary of the invention
Main purpose of the present invention is to provide a kind of simple, practical and sliding bearing formula wind driven generator unit yaw system that cost is low.
Another object of the present invention is the friction plate replacing options providing a kind of said system, makes the replacing of friction plate simple and efficient.
For achieving the above object, the present invention takes following technological scheme:
A kind of sliding bearing formula wind driven generator unit yaw system, for connecting fan tower cylinder and frame, comprise bearing bull gear, bearer ring, bearing shaft is to supporting plane friction plate, the radial supporting plane friction plate of bearing, off-course brake and driftage driving mechanism, wherein: described its lower end of bearing bull gear is connected with tower cylinder upper end, its upper end is by the bearing shaft that is connected with it lower end to supporting plane friction plate frames, the gearwheel of its side engages with the driftage driving mechanism be fixed in frame, its opposite side to be coordinated with the circumference of bearer ring by radial supporting plane friction plate of bearing of being connected with it and slides, described bearer ring upper end is connected to frame lower end, and off-course brake is connected to bearer ring lower end and acts on bearing bull gear.
Further, described bearing bull gear is inverted L shape, its inverted L shape lower end is connected to above the top flange of tower cylinder, slide by coordinating with the circumference of bearer ring with the radial supporting plane friction plate of its bearing be connected in the side of its inverted L shape upper flange, and described off-course brake acts on the lower end surface of inverted L shape upper flange.
Further, described bearer ring is several decile segmental arcs.
Further, described off-course brake adopts hydraulic brake, and hydraulic brake is multiple, and each hydraulic brake is the half of conventional driftage hydraulic brake, is evenly distributed on the lower end of bearer ring.
Further, described driftage driving mechanism bottom is provided with small gear, and it is engaged with bearing bull gear by the small gear of bottom.
Further, described sliding bearing is external driving sliding bearing or interior drive-type sliding bearing.
Further, the sliding bearing be made up of to supporting plane friction plate and the radial supporting plane friction plate of bearing bearing bull gear, bearer ring, bearing shaft is without cunning dynamic bearing.
Further, described each connection all adopts bolton Placement.
Further, described bearer ring upper end is connected to frame lower end through seam by described bolt.
The friction plate replacing options of above-mentioned sliding bearing formula wind driven generator unit yaw system is: without the need to by frame and be positioned at cabin in frame and can realize the replacing of friction plate from when tower cylinder top is hung, and is specially:
(1) described bearing shaft to the replacing options of supporting plane friction plate is:
When suitably unclamping the connecting bolt of off-course brake, with Special jack by frame local jack-up, namely replaceable.
(2) replacing options of the radial supporting plane friction plate of described bearing is:
The stay bolt replacement bearing ring of suitable quantity and the connecting bolt of frame is utilized to be put down by bearer ring, namely replaceable.
The present invention is owing to taking above technological scheme, and it has the following advantages:
1, yaw system adopts the driftage bearing that slides to replace traditional rolling driftage bearing, by contrast, can replace expensive rolling driftage bearing, the cost of bearing is reduced significantly with cheap sliding friction pair.
When 2, adopting slip driftage bearing, because sliding bearing itself has certain frictional force, like this, suitably can reduce the braking moment of off-course brake when yawing rotation is not done in cabin.In other words, suitably can reduce off-course brake quantity and can ensure that cabin is in certain dimensional orientation transfixion.Also the damping torque of off-course brake suitably can be reduced when yawing rotation is done in cabin.
3, oil-free lubrication can also be realized without cunning dynamic bearing to run, the requirement of bearing to lubrication greatly be reduced, reduces the requirement to operation maintenance.
4, bearing shaft is all designed to knockdown to supporting plane friction plate, the radial supporting plane friction plate of bearing, can conveniently install and change.
5, because current general friction material can not ensure 20 years working life, thus the present invention not by frame and be positioned at cabin in frame from tower cylinder top is hung when can realize the replacing of friction plate, have the advantages that replacing is simple and efficient.
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is a kind of sliding bearing formula wind driven generator unit yaw system structural representation (external driving) of the present invention;
Fig. 2 is a kind of sliding bearing formula wind driven generator unit yaw system structural representation (interior drive-type) of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, a kind of sliding bearing formula wind driven generator unit yaw system of the present invention, for connecting fan tower cylinder 8 and frame 1, its sliding bearing adopts outer drive form, yaw system comprises bearing bull gear 6, bearing inner ring 2, bearing shaft is to supporting plane friction plate 5, the radial supporting plane friction plate 4 of bearing, off-course brake 3 and driftage driving mechanism 7, wherein: its lower end of bearing bull gear 6 is connected with tower cylinder 8 upper end, its upper end is by the bearing shaft that is connected with it lower end to supporting plane friction plate 5 frames 1, gearwheel outside it engages with the driftage driving mechanism 7 be fixed in frame 1, its inside upper part to be coordinated with the excircle of bearing inner ring 2 by radial supporting plane friction plate 4 of bearing of being connected with it slides, bearing inner ring 2 upper end is connected to frame 1 lower end, and off-course brake 3 is connected to bearing inner ring 2 lower end and acts on bearing bull gear 6.In FIG, the radial supporting plane friction plate 4 of bearing and bearing shaft are fabricated structure to supporting plane friction plate 5, do not mark in detail one by one in figure such as some smallclothes and fastening pieces etc. wherein.
The working principle of above-mentioned yaw system is: bearing bull gear 6 is basic load bearing elements of bearing, be fixed on tower cylinder 8 motionless, driftage driving mechanism 7 engages with bearing bull gear 6 and can drive chassis 1 and the cabin be positioned in frame 1 rotate, during rotation, bearing bull gear 6 upper end by bearing shaft to supporting plane friction plate 5 and frame 1 lower end relative sliding, the thrust load vertically downward such as carrying nacelle weight, bearing bull gear 6 upper inner is by the radial supporting plane friction plate 4 of bearing and bearing inner ring 2 relative sliding being connected to frame 1 lower end, the wind load that balance blower fan bears in horizontal plane, simultaneously, off-course brake 3 can provide enough large braking moment to cabin in cabin during static generator operation, ensure that the rotation around Ta Tong center does not occur under wind load action in cabin.When unit carries out yawing rotation, these off-course brakes 3 can provide very little damping torque, to ensure that unit does stable yawing rotation, only need less driftage driving power partially can meet driving requirement simultaneously.
As improvement of the present invention:
In the above-described embodiments, bearing bull gear 6 can adopt inverted L shape structure, the lower end of its inverted L shape is connected to above the top flange of tower cylinder 8, slide by coordinating with the excircle of bearing inner ring 2 with the radial supporting plane friction plate 4 of its bearing be connected in the inner side of its inverted L shape upper flange, and off-course brake 3 acts on inverted L shape upper flange lower end, above-mentioned connection is all adopted and is bolted connection.Because off-course brake 3 acts on inverted L shape upper flange lower end, when the wind wheel of blower fan is subject to the pitch moment of wind can for frame 1 provide one with the countertorque of equilibrium about pitching axis, ensure that cabin is unlikely to tumble.
In the above-described embodiments, bearing inner ring 2 can be designed to several decile segmental arc, the bearing inner ring 2 being divided into several segmental arc through seam by bolton on the lower end surface of frame 1.Specifically optional 4 or 6 decile segmental arcs, can be convenient for changing the radial supporting plane friction plate 4 of bearing.
In the above-described embodiments, off-course brake 3 can adopt hydraulic brake, hydraulic brake is multiple, and each hydraulic brake is only the half of conventional driftage hydraulic brake, circumferentially multiplely on the lower end surface of bearing inner ring 2 to be uniformly distributed, and with bolt, they to be fixed on bearing inner ring 2 lower end surface.Wherein, the size of the operating oil pressure of off-course brake 3 can be controlled by its control system according to the designing requirement of yaw system.
In the above-described embodiments, driftage driving mechanism 7 bottom is provided with small gear, and it is engaged with outside bearing bull gear 6 by the small gear of bottom.
In the above-described embodiments, the sliding bearing be made up of to supporting plane friction plate 5 and the radial supporting plane friction plate 4 of bearing bearing bull gear 6, bearing inner ring 2, bearing shaft is without cunning dynamic bearing.
The friction plate replacing options of above-mentioned sliding bearing formula wind driven generator unit yaw system is without the need to by frame 1 and be positioned at cabin in frame 1 and can realize the replacing of friction plate from when tower cylinder 8 top is hung, and is specially:
(1) bearing shaft to the replacing options of supporting plane friction plate 5 is:
When suitably unclamping the connecting bolt of off-course brake 3, with Special jack by frame 1 local jack-up, can change one by one.
(2) replacing options of the radial supporting plane friction plate 4 of bearing is:
The stay bolt replacement bearing inner ring 2 of suitable quantity is utilized to be put down by disconnected by bearing inner ring 2 with the connecting bolt of frame 1, namely replaceable.
Embodiment 2
As shown in Figure 2, a kind of sliding bearing formula wind driven generator unit yaw system of the present embodiment, is with the difference of embodiment 1, and its sliding bearing is drive-type structure in adopting, and the bearing inner ring be about to wherein replaces to outer race.Both working principles are all identical.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technological scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a sliding bearing formula wind driven generator unit yaw system, for connecting fan tower cylinder and frame, it is characterized in that, comprise bearing bull gear, bearer ring, bearing shaft to supporting plane friction plate, the radial supporting plane friction plate of bearing, off-course brake and driftage driving mechanism, wherein:
Described its lower end of bearing bull gear is connected with tower cylinder upper end, its upper end is by the bearing shaft that is connected with it lower end to supporting plane friction plate frames, the gearwheel of its side engages with the driftage driving mechanism be fixed in frame, its opposite side to be coordinated with the circumference of bearer ring by radial supporting plane friction plate of bearing of being connected with it and slides, and on described bearer ring, the side only having supporting plane friction plate radial with bearing to coordinate to slide and bearing bull gear coordinate; Described bearer ring upper end is connected to frame lower end, and off-course brake is connected to bearer ring lower end and acts on bearing bull gear;
Described off-course brake adopts hydraulic brake, and hydraulic brake is multiple, is evenly distributed on the lower end of bearer ring.
2. sliding bearing formula wind driven generator unit yaw system according to claim 1, it is characterized in that, described bearing bull gear is inverted L shape, its inverted L shape lower end is connected to above the top flange of tower cylinder, slide by coordinating with the circumference of bearer ring with the radial supporting plane friction plate of its bearing be connected in the side of its inverted L shape upper flange, and described off-course brake acts on the lower end surface of inverted L shape upper flange.
3. sliding bearing formula wind driven generator unit yaw system according to claim 1, is characterized in that, described bearer ring is several decile segmental arcs.
4. sliding bearing formula wind driven generator unit yaw system according to claim 1, is characterized in that, described driftage driving mechanism bottom is provided with small gear, and it is engaged with bearing bull gear by the small gear of bottom.
5. the sliding bearing formula wind driven generator unit yaw system according to any one of claim 1-4, is characterized in that, sliding bearing is external driving sliding bearing or interior drive-type sliding bearing.
6. the sliding bearing formula wind driven generator unit yaw system according to any one of claim 1-4, it is characterized in that, the sliding bearing be made up of to supporting plane friction plate and the radial supporting plane friction plate of bearing bearing bull gear, bearer ring, bearing shaft is without cunning dynamic bearing.
7. the sliding bearing formula wind driven generator unit yaw system according to any one of claim 1-4, is characterized in that, described each connection all adopts bolton Placement.
8. sliding bearing formula wind driven generator unit yaw system according to claim 7, is characterized in that, described bearer ring upper end is connected to frame lower end through seam by described bolt.
9. the friction plate replacing options of sliding bearing formula wind driven generator unit yaw system according to claim 7, it is characterized in that, without the need to by frame and be positioned at cabin in frame and can realize the replacing of friction plate from when tower cylinder top is hung, be specially:
(1) described bearing shaft to the replacing options of supporting plane friction plate is:
When suitably unclamping the connecting bolt of off-course brake, with Special jack by frame local jack-up, namely replaceable;
(2) replacing options of the radial supporting plane friction plate of described bearing is:
The stay bolt replacement bearing ring of suitable quantity and the connecting bolt of frame is utilized to be put down by bearer ring, namely replaceable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210470772.2A CN103016275B (en) | 2012-11-20 | 2012-11-20 | A kind of sliding bearing formula wind driven generator unit yaw system and friction plate replacing options |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210470772.2A CN103016275B (en) | 2012-11-20 | 2012-11-20 | A kind of sliding bearing formula wind driven generator unit yaw system and friction plate replacing options |
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| Publication Number | Publication Date |
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| CN103016275A CN103016275A (en) | 2013-04-03 |
| CN103016275B true CN103016275B (en) | 2015-10-28 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2837818B1 (en) * | 2013-08-13 | 2018-12-05 | Siemens Aktiengesellschaft | Wind turbine with yaw bearing lifting device |
| DK179077B1 (en) * | 2016-03-23 | 2017-10-09 | Envision Energy Denmark Aps | Wind turbine comprising a yaw bearing system |
| DK201670168A1 (en) * | 2016-03-23 | 2017-01-16 | Envision Energy Denmark Aps | Wind turbine comprising a yaw bearing system |
| CN106150905A (en) * | 2016-08-09 | 2016-11-23 | 内蒙古久和能源装备有限公司 | Wind generating set yaw drive system protection device |
| US10612527B2 (en) * | 2017-06-13 | 2020-04-07 | General Electric Company | Methods for refurbishing wind turbines |
| CN110094411B (en) * | 2019-04-24 | 2020-07-03 | 中国船舶重工集团公司第七一九研究所 | Single-point mooring yoke joint structure capable of replacing bearing on sea |
| CN112392672A (en) * | 2019-08-15 | 2021-02-23 | 北京京冶后维风电科技发展有限公司 | Method and system for replacing yaw support sliding block of wind generating set |
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| EP1406012A1 (en) * | 2002-10-04 | 2004-04-07 | Friedrich Prof. Dr.-Ing. Klinger | Bearing and braking system for the nacelle of a wind turbine |
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2012
- 2012-11-20 CN CN201210470772.2A patent/CN103016275B/en active Active
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| CN201326521Y (en) * | 2008-12-24 | 2009-10-14 | 华锐风电科技有限公司 | Slide yaw bearing device of wind turbine |
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| CN103016275A (en) | 2013-04-03 |
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