CN103016275A - Sliding bearing type wind driven generator unit yaw system and friction plate replacement method - Google Patents
Sliding bearing type wind driven generator unit yaw system and friction plate replacement method Download PDFInfo
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- CN103016275A CN103016275A CN2012104707722A CN201210470772A CN103016275A CN 103016275 A CN103016275 A CN 103016275A CN 2012104707722 A CN2012104707722 A CN 2012104707722A CN 201210470772 A CN201210470772 A CN 201210470772A CN 103016275 A CN103016275 A CN 103016275A
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- sliding bearing
- supporting plane
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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 discloses a sliding bearing type wind driven generator unit yaw system, which is used for connecting a blower tower drum and a framework and comprises a bearing large gear ring, a bearing ring, a bearing axial bearing surface friction plate, a bearing radial bearing surface friction plate, a yaw brake and a yaw driving mechanism, wherein the lower end of the bearing large gear ring is connected with the upper end of a tower drum, and the upper end of the bearing large gear ring supports the lower end of a framework through the bearing axial bearing surface friction plate in combining connection with the bearing large gear ring, a large gear on one side of the bearing large gear ring is meshed with the yaw driving mechanism fixed on the framework, and the other side of the bearing large gear ring is in sliding fit with the circumference of a bearing ring via the bearing radial bearing surface friction plate in combining connection with the bearing large gear ring; and the upper end of the bearing ring is connected to the lower end of the framework, and the yaw brake is connected to the lower end of the bearing ring and acts on the bearing large gear ring. The whole sliding bearing type wind driven generator unit yaw system has the characteristics of simplicity, practicality and low cost, and can reduce the number of the yaw brake; and in addition, the invention further discloses a friction plate method of the system, and the friction plates adopts a combination mode and thus are convenient to mount and replace.
Description
Technical field
The present invention relates to the wind power technology field, particularly, relate to a kind of sliding bearing formula wind generating set yaw system and friction plate replacing method.
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.Simultaneously, when adopting rolling type driftage bearing, yaw system must dispose the off-course brake of a greater number, to guarantee that unit makes the cabin can guarantee certain dimensional orientation transfixion when not doing yawing rotation.In addition, when unit is done yawing rotation, also need to apply certain yaw damping moment, do stable yawing rotation to guarantee unit energy.Simultaneously, the axis of rolling is promised the configuration automatic lubricating system to guarantee the lubricated of rolling element.
Summary of the invention
Main purpose of the present invention is to provide a kind of simple, practicality and the low sliding bearing formula wind generating set yaw system of cost.
Another object of the present invention is to provide a kind of friction plate replacing method 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 generating set yaw system, be used for connecting fan tower cylinder and frame, comprise the bearing bull gear, bearer ring, bearing shaft is to the supporting plane friction plate, bearing is the supporting plane friction plate radially, off-course brake and driftage driving mechanism, wherein: its lower end of described 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 one side and the driftage driving mechanism engagement that is fixed on the frame, its opposite side by with its bearing that is connected radially the supporting plane friction plate cooperate slip with the circumference of bearer ring; Described bearer ring upper end is connected to the frame lower end, and off-course brake is connected to the bearer ring lower end and acts on the 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, the side of its inverted L shape upper flange by with its bearing that is connected radially the supporting plane friction plate cooperate slip with the circumference of bearer ring, and described off-course brake acts on the lower end surface of inverted L shape upper flange.
Further, described bearer ring is several five equilibrium segmental arcs.
Further, described off-course brake adopts hydraulic brake, and hydraulic brake is a plurality of, and each hydraulic brake is conventional driftage hydraulic brake half, is evenly distributed on the lower end of bearer ring.
Further, described driftage driving mechanism bottom is provided with small gear, and it is by small gear and the engagement of bearing bull gear of bottom.
Further, described sliding bearing is external driving sliding bearing or interior drive-type sliding bearing.
Further, by bearing bull gear, bearer ring, bearing shaft to supporting plane friction plate and bearing radially the sliding bearing that forms of supporting plane friction plate be without cunning dynamic bearing.
Further, the bolton Placement is all adopted in described each connection.
Further, be connected to the frame lower end through seam by described bolt on the described bearer ring.
The friction plate replacing method of above-mentioned sliding bearing formula wind generating set yaw system is: need not frame and be positioned at the replacing that can realize friction plate in the situation under hanging from tower cylinder top of cabin on the frame, be specially:
(1) described bearing shaft to the replacing method of supporting plane friction plate is:
In the situation of the connecting bolt that suitably unclamps off-course brake, with the local jack-up of frame, namely replaceable with Special jack.
(2) described bearing radially the replacing method of supporting plane friction plate be:
Utilize the stay bolt replacement bearing ring of suitable quantity and the connecting bolt of frame that bearer ring is put down, namely replaceable.
The present invention is owing to take 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 with cheap sliding friction pair expensive rolling driftage bearing, and the cost of bearing is reduced significantly.
2, adopt when sliding the driftage bearing, because sliding bearing itself has certain frictional force, like this, when yawing rotation is not done in the cabin, can suitably reduce the braking moment of off-course brake.In other words, can suitably reduce off-course brake quantity and can guarantee that the cabin is in certain dimensional orientation transfixion.When doing yawing rotation, the cabin also can suitably reduce the damping torque of off-course brake.
3, can also realize the oil-free lubrication operation without cunning dynamic bearing, so that bearing greatly reduces lubricated requirement, reduce the requirement to operation maintenance.
4, bearing shaft to supporting plane friction plate, bearing radially the supporting plane friction plate all be designed to knockdownly, can conveniently install and change.
5, since at present general friction material can not guarantee 20 years working life, so the present invention has the simple and efficient characteristics of replacing frame and the cabin that is positioned on the frame not being hung the replacing that can realize friction plate in the lower situation from tower cylinder top.
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is a kind of sliding bearing formula wind generating set yaw system architecture schematic representation of the present invention.
Fig. 2 is a kind of sliding bearing formula wind generating set yaw system architecture schematic representation of the present invention (interior drive-type).
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of sliding bearing formula wind generating set yaw of the present invention system, be used 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, bearing is supporting plane friction plate 4 radially, off-course brake 3 and driftage driving mechanism 7, wherein: bearing bull gear 6 its lower ends are connected with tower cylinder 8 upper ends, its upper end is by the bearing shaft that is connected with it lower end to supporting plane friction plate 5 frames 1, the gearwheel in its outside and driftage driving mechanism 7 engagement that is fixed on the frame 1, its inside upper part by with its bearing that is connected radially supporting plane friction plate 4 cooperate slip with the excircle of bearing inner ring 2; Bearing inner ring 2 upper ends are connected to frame 1 lower end, and off-course brake 3 is connected to bearing inner ring 2 lower ends and acts on bearing bull gear 6.In Fig. 1, bearing radially supporting plane friction plate 4 and bearing shaft is fabricated structure to supporting plane friction plate 5, does not mark in detail one by one among the figure such as some smallclothes wherein and fastening piece.
The working principle of above-mentioned yaw system is: bearing bull gear 6 is basic load bearing elements of bearing, be fixed on the tower cylinder 8 motionless, driftage driving mechanism 7 and 6 engagements of bearing bull gear can drive chassis 1 and the cabin that is positioned on the frame 1 rotate, during rotation, bearing bull gear 6 upper ends by bearing shaft to supporting plane friction plate 5 and frame 1 lower end relative sliding, the thrust loads vertically downward such as carrying cabin weight, bearing bull gear 6 upper inner are by bearing radially supporting plane friction plate 4 and bearing inner ring 2 relative slidings that are connected to frame 1 lower end, the wind load that the balance blower fan bears in horizontal plane, simultaneously, off-course brake 3 can provide enough large braking moment to the cabin when the static generator operation in cabin, guarantee that the rotation around tower cylinder center does not occur under wind load action in the cabin.These off-course brakes 3 can provide very little damping torque when unit carries out yawing rotation, do stable yawing rotation to guarantee unit, and only needing simultaneously partially, less driftage driving power can satisfy the driving requirement.
As improvement of the present invention:
In the above-described embodiments, bearing bull gear 6 can adopt the inverted L shape structure, the lower end of its inverted L shape is connected to above the top flange of tower cylinder 8, the inboard of its inverted L shape upper flange by with its bearing that is connected radially supporting plane friction plate 4 cooperate slip with the excircle of bearing inner ring 2, and off-course brake 3 acts on inverted L shape upper flange lower end, and above-mentioned connection all adopts bolton to connect.Because off-course brake 3 acts on inverted L shape upper flange lower end, when being subject to the pitch moment of wind, the wind wheel of blower fan can for frame 1 provides a countertorque with equilibrium about pitching axis, guarantee that the cabin is unlikely to tumble.
In the above-described embodiments, bearing inner ring 2 can be designed to several five equilibrium segmental arcs, the bearing inner ring 2 that is divided into several segmental arcs through seam by bolton on the lower end surface of frame 1.Concrete optional 4 or 6 five equilibrium segmental arcs can be convenient for changing radially supporting plane friction plate 4 of bearing.
In the above-described embodiments, off-course brake 3 can adopt hydraulic brake, hydraulic brake is a plurality of, and each hydraulic brake only is conventional driftage hydraulic brake half, on the lower end surface of bearing inner ring 2, along a plurality of even distributions of circumference, and with bolt they are fixed on bearing inner ring 2 lower end surfaces.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 bottoms are provided with small gear, and it is by small gear and the engagement of bearing bull gear 6 outsides of bottom.
In the above-described embodiments, by bearing bull gear 6, bearing inner ring 2, bearing shaft to supporting plane friction plate 5 and bearing radially the sliding bearing that forms of supporting plane friction plate 4 be without cunning dynamic bearing.
The friction plate replacing method of above-mentioned sliding bearing formula wind generating set yaw system is specially for need not frame 1 and be positioned at the replacing that can realize friction plate in the situation under hanging from tower cylinder 8 tops of cabin on the frame 1:
(1) bearing shaft to the replacing method of supporting plane friction plate 5 is:
In the situation of the connecting bolt that suitably unclamps off-course brake 3,, can change one by one frame 1 local jack-up with Special jack.
(2) bearing radially the replacing method of supporting plane friction plate 4 be:
Utilize the interior ring 2 of stay bolt replacement bearing of suitable quantity and the connecting bolt of frame 1 that bearing inner ring 2 is put down by disconnected, namely replaceable.
As shown in Figure 2, a kind of sliding bearing formula wind generating set yaw system of present embodiment is that with embodiment 1 difference its sliding bearing is drive-type structure in adopting, and the bearing inner ring that is about to wherein replaces to outer race.Both working principles are all identical.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. sliding bearing formula wind generating set yaw system, be used for connecting fan tower cylinder and frame, it is characterized in that, comprise that bearing bull gear, bearer ring, bearing shaft are to supporting plane friction plate, bearing radially supporting plane friction plate, off-course brake and driftage driving mechanism, wherein:
Its lower end of described 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 one side and the driftage driving mechanism engagement that is fixed on the frame, its opposite side by with its bearing that is connected radially the supporting plane friction plate cooperate slip with the circumference of bearer ring; Described bearer ring upper end is connected to the frame lower end, and off-course brake is connected to the bearer ring lower end and acts on the bearing bull gear.
2. sliding bearing formula wind generating set yaw according to claim 1 system, 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, the side of its inverted L shape upper flange by with its bearing that is connected radially the supporting plane friction plate cooperate slip with the circumference of bearer ring, and described off-course brake acts on the lower end surface of inverted L shape upper flange.
3. sliding bearing formula wind generating set yaw according to claim 1 system is characterized in that described bearer ring is several five equilibrium segmental arcs.
4. sliding bearing formula wind generating set yaw according to claim 1 system, it is characterized in that described off-course brake adopts hydraulic brake, hydraulic brake is a plurality of, and each hydraulic brake is conventional driftage hydraulic brake half, is evenly distributed on the lower end of bearer ring.
5. sliding bearing formula wind generating set yaw according to claim 1 system is characterized in that described driftage driving mechanism bottom is provided with small gear, and its small gear by the bottom meshes with bearing bull gear.
6. each described sliding bearing formula wind generating set yaw system is characterized in that described sliding bearing is external driving sliding bearing or interior drive-type sliding bearing according to claim 1-5.
7. each described sliding bearing formula wind generating set yaw system according to claim 1-5, it is characterized in that, by bearing bull gear, bearer ring, bearing shaft to supporting plane friction plate and bearing radially the sliding bearing that forms of supporting plane friction plate be without cunning dynamic bearing.
8. each described sliding bearing formula wind generating set yaw system is characterized in that according to claim 1-5, described each connect and all adopt the bolton Placement.
9. sliding bearing formula wind generating set yaw according to claim 8 system is characterized in that, described bearer ring upper end is connected to the frame lower end through seam by described bolt.
10. the friction plate replacing method of sliding bearing formula wind generating set yaw according to claim 8 system, it is characterized in that, need not frame and be positioned at the replacing that can realize friction plate in the situation under hanging from tower cylinder top of cabin on the frame, be specially:
(1) described bearing shaft to the replacing method of supporting plane friction plate is:
In the situation of the connecting bolt that suitably unclamps off-course brake, with the local jack-up of frame, namely replaceable with Special jack;
(2) described bearing radially the replacing method of supporting plane friction plate be:
Utilize the stay bolt replacement bearing ring of suitable quantity and the connecting bolt of frame that bearer ring is put down, namely replaceable.
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| 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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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN103016275A true CN103016275A (en) | 2013-04-03 |
| CN103016275B CN103016275B (en) | 2015-10-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373288A (en) * | 2013-08-13 | 2015-02-25 | 西门子公司 | Wind turbine with yaw bearing lifting device |
| 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 |
| DK201670168A1 (en) * | 2016-03-23 | 2017-01-16 | Envision Energy Denmark Aps | Wind turbine comprising a yaw bearing system |
| DK201670170A1 (en) * | 2016-03-23 | 2017-10-02 | Envision Energy Denmark Aps | Wind turbine comprising a yaw bearing system |
| CN109083816A (en) * | 2017-06-13 | 2018-12-25 | 通用电气公司 | Method for renovating wind turbine |
| CN110094411A (en) * | 2019-04-24 | 2019-08-06 | 中国船舶重工集团公司第七一九研究所 | It is a kind of can marine replacement bearing the hinged header structure of single point mooring's york piece |
| 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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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373288A (en) * | 2013-08-13 | 2015-02-25 | 西门子公司 | Wind turbine with yaw bearing lifting device |
| DK201670168A1 (en) * | 2016-03-23 | 2017-01-16 | Envision Energy Denmark Aps | Wind turbine comprising a yaw bearing system |
| DK201670170A1 (en) * | 2016-03-23 | 2017-10-02 | Envision Energy Denmark Aps | Wind turbine comprising a yaw bearing system |
| DK179077B1 (en) * | 2016-03-23 | 2017-10-09 | Envision Energy Denmark Aps | Wind turbine comprising a yaw bearing system |
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| 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 |
| CN109083816A (en) * | 2017-06-13 | 2018-12-25 | 通用电气公司 | Method for renovating wind turbine |
| CN109083816B (en) * | 2017-06-13 | 2021-10-29 | 通用电气公司 | Method for retrofitting a wind turbine |
| CN110094411A (en) * | 2019-04-24 | 2019-08-06 | 中国船舶重工集团公司第七一九研究所 | It is a kind of can marine replacement bearing the hinged header structure of single point mooring's york piece |
| 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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