CN110056487A - A kind of slidingtype bearing and its maintaining method for wind-driven generator - Google Patents
A kind of slidingtype bearing and its maintaining method for wind-driven generator Download PDFInfo
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- CN110056487A CN110056487A CN201910192841.XA CN201910192841A CN110056487A CN 110056487 A CN110056487 A CN 110056487A CN 201910192841 A CN201910192841 A CN 201910192841A CN 110056487 A CN110056487 A CN 110056487A
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- China
- Prior art keywords
- sliding surface
- outer ring
- inner ring
- bearing
- slidingtype
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention relates to a kind of slidingtype bearings for wind-driven generator, comprising: outer ring is configured to connect or engage with the wheel hub of wind-driven generator or main bearing seat, and wherein outer ring has the first sliding surface；Inner ring, it is configured to connect or engage with the blade of wind-driven generator or main shaft, wherein inner ring has the second sliding surface associated with the first sliding surface, and wherein outer ring and inner ring are configured such that between the first sliding surface and the second sliding surface allows blade or main shaft to rotate around the central axes of inner ring or outer ring relative to sliding；And the first sliding surface and/or the second sliding surface are connected to be used for externally to the first sliding surface and/or the second sliding surface addition lubricant by one or more lubrication channels, the lubrication channel with outside.Through the invention, it is possible to provide the face formula sliding friction between blade and wheel hub and/or between wheel hub and main shaft contacts, to significantly reduce the contact stress that bearing is subject on unit area, thus improves the service life of bearing.
Description
Technical field
The present invention generally relates to wind power generation fields, in particular to a kind of slidingtype for wind-driven generator
Bearing.Moreover, it relates to a kind of method of slidingtype bearing as maintenance.
Background technique
Clean energy resource is as a kind of new energy, with widely distributed, renewable, environment is dirty compared with conventional fossil fuel
Contaminate the advantages that small.In view of above-mentioned advantage, in recent years, clean energy technology shows the situation of fast development.As clean energy resource
Representative, wind-driven generator using growing.
Two important mechanical parts of wind-driven generator are pitch variable bearings and base bearing.Pitch variable bearings are used for blade and wheel
Hub connects and allows to adjust the change blade angle of blade, and base bearing is for connecting and permitting the main bearing seat of the main shaft of wheel hub and pylon
Perhaps the relative rotation between main shaft and main bearing seat.Currently, pitch variable bearings and base bearing mainly use ball bearing or ball bearing.
However, ball bearing or ball bearing are disadvantageous in that, and since ball bearing is that point contact or line contact, contact stress
Greatly, therefore in its manufacturing process, it is necessary to high-quality steel be used just to can guarantee the satisfactory longevity of bearing with precision process
Life；Moreover, ball bearing there must be preferable leakproofness, the moisture that otherwise invades or dirty bearing life will be significantly affected.
In addition, pitch variable bearings and base bearing the two mechanical parts bear larger load during fan operation, and relatively rotate
Lasting abrasion can be generated, therefore the maintenance work of pitch variable bearings and base bearing may need frequent progress.Using ball axis
Hold or ball bearing in the case where, it is necessary to dismantle and lift by crane entire wheel hub or blade, this brings extreme difficulties and peace to maintenance work
Full hidden danger.
Summary of the invention
From the prior art, the task of the present invention is provide a kind of slidingtype bearing and its dimension for wind-driven generator
Maintaining method can be provided between blade and wheel hub and/or between wheel hub and main shaft by the slidingtype bearing and/or this method
Face formula sliding friction contact thus improve bearing to significantly reduce the contact stress that bearing is subject on unit area
Service life and the manufacture requirement for reducing bearing.
In the first aspect of the present invention, which passes through a kind of slidingtype bearing for wind-driven generator, comprising:
Outer ring is configured to connect or engage with the wheel hub of wind-driven generator or main bearing seat, and wherein outer ring has
There is the first sliding surface；
Inner ring is configured to connect or engage with the blade of wind-driven generator or main shaft, wherein inner ring have with
Associated second sliding surface of first sliding surface, wherein outer ring and inner ring are configured such that the first sliding surface and the second sliding surface
Between allow blade or main shaft to rotate around the central axes of inner ring or outer ring relative to sliding；And
First sliding surface and/or the second sliding surface are connected to by one or more lubrication channels, the lubrication channel with outside
For adding lubricant externally to the first sliding surface and/or the second sliding surface.
It should be noted here that in the present invention, " bearing " not only covers discrete parts of bearings, two portions are also covered
Rotation connection between part, that is to say, that " bearing " both may be constructed such that discrete parts, also may be constructed such that and installation position
Set integration or part of it.In addition, term " outer ring " refers to for " inner ring " in external rotatable parts.One
As for, outer ring have cavity, and inner ring have lug boss corresponding with the cavity, be achieved between outer ring and inner ring
Be rotatably assorted.
It is provided in a preferred embodiment of the invention, outer ring and/or inner ring have one or more detachable segments.It is logical
The preferred embodiment is crossed, the dismountable property in part of bearing may be implemented, to significantly simplify bearing maintenance process.Here, outer ring and
Inner ring is preferably all made of multiple detachable segments, wherein be connected to each other between each segment by bolt or other means or with
Fixed position connection.In maintenance, one or more segments can be removed without dividing blade and wheel hub or wheel hub and main shaft
From so that exempting this is completely separated process and hoisting process.On the contrary, entire maintenance work outside wheel hub and can for example rectify
It is carried out in cover.
It provides in another preferred embodiment of the invention, is disposed with one on the first sliding surface and/or the second sliding surface
Or multiple friction plates.By the preferred embodiment, can be provided by the friction plate of setting respective number and material sliding surface it
Between desired sliding friction contact, that is to say, that adjust the frictional force of sliding contact and reduce inner ring and outer ring itself
Abrasion.
It is provided in another preferred embodiment of the invention, the friction plate is arranged on the second sliding surface.Preferably by this
Scheme can form sliding friction between friction plate of the outer ring with inner ring and contact, and thus be conducive to connect blade or main shaft
The reliable and stable frictional rotation of inner ring, especially can be to avoid the idle running of main shaft or blade.It should be understood that sliding first
Arrangement friction plate is also conceivable on dynamic face, in this case, forms sliding between inner ring and the friction plate of outer ring and rubs
Wipe contact.
It provides, is arranged on the friction plate jagged in another preferred embodiment of the invention.The notch is, for example, X
Shape, S-shaped or O shape, span are, for example, the whole surface across notch.By the way that notch 401 is arranged on friction plate 110, can drop
Low noise reduces contact surface, and plays the role of oil storage.
It is provided in an expansion scheme of the invention, the wheel hub or main bearing seat of outer ring and wind-driven generator are integrally melted into
A part of shape either wheel hub or main bearing seat；And/or
The blade or integrated spindle axis of inner ring and wind-driven generator are melted into a part of shape either blade or main shaft.
By the expansion scheme, it can be achieved that slidingtype bearing is integrated with installation site, sliding shaft thus can be reduced
The installation cost held.It should be understood that in other cases, slidingtype bearing of the invention is also possible to discrete parts.
It is provided in another expansion scheme of the invention, multiple through-holes is provided on outer ring and/or inner ring, wherein passing through
Outer ring or inner ring can be connect or can by inner ring or the multiple of outer ring by the through-hole using using screw with wheel hub or blade
Disassembly segment is connected to each other.By the expansion scheme, it can be achieved that reliably that between installation and each segment of inner ring and outer ring
This is fixed.In other embodiments, other connection types can also be used, such as snapped connection, rivet interlacement, welding.
It is provided in another expansion scheme of the invention, the friction plate has one or more conducts in the following
Basic material:
Polybenzimidazoles (PBI)；
Polyimides (PI)；
Polyamidoimide (PAI)
Polyether-ether-ketone (PEEK)；
Polyphenylene sulfide (PPS)；
Polyphenylene sulphone resin (PPSU)；
Polysulfones (PSU)；
Polyetherimide (PEI)；
Kynoar (PVDF)；
Ethylene chlorotrifluoroethylene (ECTFE)；
Soluble poly tetrafluoroethene (PFA)；
Polytetrafluoroethylene (PTFE) (PTFE)；And
Polyethylene terephthalate (PET).
By the expansion scheme, it can provide basic wearability preferable friction plate.It under the teachings of the present invention, can be with
Select basic material of the other materials as friction plate.
It is provided in another expansion scheme of the invention, the friction plate has one or more conducts in the following
Reinforcing material:
Graphite；
Carbon fiber；And
Glass fibre.
By the expansion scheme, the intensity or wearability of friction plate can be further improved.Under the teachings of the present invention, also
It can choose reinforcing material of the other materials as friction plate.
Provided in a preferred embodiment of the invention, one or more of described friction plate the first sliding surface and/
Or second be arranged such that the friction plate and the first sliding surface and/or the second sliding surface are angled on sliding surface.?
This, friction plate with sliding surface is angled refers to, friction plate is directed to surface and the sliding of specific direction or friction plate
The surface in face is angled.By the expansion scheme, individualized frictional force can be provided in different sliding positions.
It provides in another preferred embodiment of the invention, the friction plate is arranged symmetrically in the circumferential direction of outer ring or inner ring.
By the preferred embodiment, uniform frictional force can be provided in the circumferential direction of outer ring or inner ring.It is arranged symmetrically and for example may include
Friction plate is arranged symmetrically or is evenly distributed on circumferential direction or the circumference of inner ring or outer ring about central axes in couples.
It is provided in another preferred embodiment of the invention, the friction plate is arranged in the recess in the circumferential direction of inner ring or outer ring
It is interior.It is recessed by setting, the friction plate being arranged in recess can be made stronger, prevents friction plate from skidding or fall off.It is recessed
Sunken shape can match with friction plate, and the depth being recessed is lower than the thickness of friction plate, so that a part of friction plate
Expose to provide frictional force.
It is provided in an expansion scheme of the invention, the slidingtype bearing is used as the pitch variable bearings of wind-driven generator
Or base bearing.By connecting portion difference, slidingtype bearing of the invention may be used as pitch variable bearings or the master of sharp generator
Bearing.When being used as pitch variable bearings, which connect blade with wheel hub, and the sliding between outer ring and outer ring connects
Connect the variable pitch angle that can permit adjustment blade；And when being used as base bearing, the slidingtype bearing is by the main shaft of wheel hub and pylon
Main bearing seat connection, and being slidably connected between outer ring and outer ring can permit main shaft and rotate relative to main bearing seat.
In the second aspect of the present invention, foregoing task passes through a kind of for safeguarding the side of slidingtype bearing according to the present invention
Method solves, wherein outer ring and/or inner ring that the sliding shaft is held have one or more detachable segments, this method packet
It includes:
One or more of described detachable segment is removed, wherein removal operation is outside wheel hub and in pod
It executes；
Slidingtype bearing is safeguarded；And
Slidingtype bearing is installed into back in the detachable segment of removal.
The present invention at least has following the utility model has the advantages that (1) is relative to rolling bearing, and slidingtype bearing of the invention is being run
Face contact between inner ring or friction material and outer ring is provided in the process, therefore the contact stress on unit area is low, and in this way
Face contact to parts precision require also not high therefore of the invention slidingtype bearing do not need high-intensitive material and Gao Jiagong
Precision thus reduces bearing cost；(2) relative to rolling bearing, the sliding surface of slidingtype bearing of the invention is to lubrication
It is required that it is not high, do not need ball bearing that expensive sealing ring and lubricating system；(3) for rolling bearing, after damage
It needs to hang lower entire blade or main shaft, pitch variable bearings or base bearing is maintained or replaced, therefore the process is very expensive and endangers
Dangerous higher, for big megawatt of this future developing trend of marine unit, situation is even more so；And in the present invention
Slidingtype bearing occur internal friction piece damage when, a part of detachable segment can be only removed, then to internal structure
It is safeguarded and is replaced, to eliminate aforementioned hoisting process；And since contact stress is smaller, it is however generally that inner ring and outer ring
It is less likely to be damaged, therefore the reliability of slidingtype bearing of the invention and durability are higher；It include especially detachable in outer ring
In the case where segment, the mounting portion (such as wheel hub) of installation outer ring can be influenced as small as possible in maintenance, so that need not both destroy
The mounting portion (wheel hub) of outer ring, need not also remove the attachment (such as blade) of inner ring, and the detachable segment of the outer ring is torn open
Unloading easily to carry out (without carrying out in bearing or in blade) in Bearing outer；(4) in this application, by will in
Circle is configured for installing rotatable equipment (such as blade or main shaft), rotatable equipment can be made uninterruptedly to rotate, this is
Because the surface of inner ring is almost used for sliding friction contact, therefore can utmostly avoid and exposed table compared with outer ring
The associated disturbing factor in face (such as undesirable friction, pressure, dirty attachment), to promote to can be rotated equipment, such as leaf
The accurate angular adjustment of piece realizes more stable and reliable rotation；(5) in this application, by being arranged for adding lubricant
Lubrication channel, the addition of lubricant is easily implemented, without dismantling or destroying bearing；(6) outer ring passes through bolt and wheel
Hub connection, therefore entire friction plate discord hub contacts, can conveniently carry out safeguarding/replacing；(7) it is placed in the friction plate
In the case where in the recess of certain height, the bearing capacity of friction plate and the deformation in reduced thickness direction can be significantly improved,
And fixed by block, cost is lower, and replaceability is more preferable；(8) feelings of the shapes notch such as X-type are provided in the Friction Disk Surface
Under condition, noise can be reduced, reduces contact surface, and play the role of oil storage.
Detailed description of the invention
With reference to specific embodiment, the present invention is further explained with reference to the accompanying drawing.
Fig. 1 shows the first embodiment of slidingtype bearing according to the present invention；
Fig. 2 shows the second embodiments of slidingtype bearing according to the present invention；
Fig. 3 shows the process for safeguarding the method for slidingtype bearing according to the present invention；And
Fig. 4 shows one embodiment of the friction plate of slidingtype bearing according to the present invention.
Specific embodiment
It should be pointed out that each component in each attached drawing may be shown in which be exaggerated in order to illustrate, and it is not necessarily ratio
Example is correctly.In the drawings, identical appended drawing reference is equipped with to the identical component of identical or function.
In the present invention, unless otherwise indicated, " on being arranged in ... ", " being arranged in ... top " and " on being arranged in ... "
Do not exclude the case where there are intermediaries therebetween.In addition, being merely representative of " above being arranged in ... " between two components
Relative positional relationship, and in any case, such as after the reverse line of production, can also be converted to " be arranged in ... it is lower or under
Side ", vice versa.
In the present invention, each embodiment is intended only to illustrate the solution of the present invention, and is understood not to restrictive.
In the present invention, unless otherwise indicated, quantifier "one", " one " and the scene for not excluding element.
It is also noted herein that in an embodiment of the present invention, for it is clear, for the sake of simplicity, might show only one
Sub-unit or component, but those skilled in the art are it is understood that under the teachings of the present invention, it can be according to concrete scene
Need to add required component or component.
It is also noted herein that within the scope of the invention, the wording such as " identical ", " equal ", " being equal to " are not meant to
The two numerical value is absolutely equal, but allows certain reasonable error, that is to say, that the wording also contemplated " substantially phase
Together ", " being essentially equal ", " being substantially equal to ".
In addition, the number of the step of each method of the invention limit the method step execute sequence.Unless special
It does not point out, various method steps can be executed with different order.
It should finally be noted in the present invention, " bearing " not only covers discrete parts of bearings, two portions are also covered
Rotation connection between part, that is to say, that " bearing " both may be constructed such that discrete parts, also may be constructed such that and installation position
Set integration or part of it.
Fig. 1 shows the first embodiment of slidingtype bearing 100 according to the present invention.
In the first embodiment, slidingtype bearing 100 is used as the pitch variable bearings of wind-driven generator.
Slidingtype bearing 100 includes following component, and some of components are optional:
Outer ring 108 is connect with the wheel hub 104 of wind-driven generator, and wherein outer ring 108 has the first sliding surface 111.?
This, outer ring 108 is made of multiple segments 105,106 and 113 detachable (as being herein 3), these detachable segments 105,106
Space for accommodating inner ring 102 is surrounded jointly with 113, in a part of the detachable segment 105,106 and 113 of a portion
Surface forms sliding surface 111.In the present embodiment, outer ring 108 is connect with wheel hub 104 by bolt 109 and by bolt 109
Its detachable segment 105,106 and 113 is connected to each other.For this purpose, in outer ring 108 formed for bolted through-hole (see
Dotted line in outer ring 108).In other embodiments, other connection types can be used, such as snap connection, rivet interlacement, welding
Outer ring 108 is connect with wheel hub 104 and the detachable segment of outer ring 108 is connected to each other.In addition, outer ring 108 can also be with
A part of 104 integral forming of wheel hub either wheel hub 104.
Inner ring 102 is connect with the blade 101 of wind-driven generator, and wherein inner ring 102 has and the first sliding surface 111
Associated second sliding surface 112, wherein outer ring 108 and inner ring 102 are configured such that the first sliding surface 111 and the second sliding
Blade 101 is allowed to rotate around the central axes X of inner ring or outer ring relative to sliding between face 111.Here, outer ring 108 and inner ring 102
Central axes X refer to inner ring 102 or outer ring 108 axis or central axis where straight line.Here, the protrusion of inner ring 102 protrudes into
In outer ring 108 and is formed and can constitute the second sliding surface 112 that sliding friction contacts with the first sliding surface 111.Here, inner ring 102
It is made of single segment, but in other embodiments, inner ring 102 can also be made of multiple detachable segments.In this implementation
In example, inner ring 102 is connect by bolt 103 with blade 101.Bolted through-hole is used for for this purpose, being formed in inner ring 102
(see dotted line in inner ring 102).In other embodiments, other connection types can be used, such as snap connection, rivet interlacement, welding
Etc. inner ring 102 is connect with blade 101 and the detachable segment of inner ring 102 is connected to each other.
One or more lubrication channels 107, the lubrication channel 107 is by the first sliding surface 111 and/or the second sliding surface
112 are connected to for adding lubricant externally to the first sliding surface 111 and/or the second sliding surface 112 with outside.Lubrication channel
107 be, for example, the channel outputed in outer ring 108 or inner ring 102, and the channel leads to sliding surface.Due to sliding friction of the invention
Contact is not necessarily to leakproofness, therefore 107 channels of the lubrication have no substantial effect on operation and the durability of bearing.On the contrary, the profit
Slide-through road 107 will greatly facilitate the addition of lubricant, without dismantling bearing 100.
Optional friction plate 110, is arranged on the second sliding surface 112.It should be noted here that in other embodiments
In, it can also be arranged on the first sliding surface 111.By the way that the friction plate 110 of respective number and material is arranged, sliding can be provided
Desired sliding friction contact between face 111,112, that is to say, that the frictional force of adjustable sliding contact simultaneously reduces inner ring
102 and outer ring 108 itself abrasion.It, can be in outer ring 108 by the way that the friction plate 110 to be arranged on the second sliding surface 112
Sliding friction is formed between the friction plate 110 of inner ring 102 to contact, and is thus conducive to the reliable of the inner ring 102 for connecting blade 101
Stable frictional rotation, especially can be to avoid the idle running of blade 101.It should be understood that being arranged on the first sliding surface 111
Friction plate 110 be also it is conceivable, in this case, between the friction plate 110 of inner ring 102 and outer ring 108 formed sliding
CONTACT WITH FRICTION.Friction plate 110 can have basic material and reinforcing material, and wherein basic material is for example including polybenzimidazoles
(PBI), polyimides (PI), polyamidoimide (PAI), polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), polyphenylsulfone
Resin (PPSU), polysulfones (PSU), polyetherimide (PEI), Kynoar (PVDF), ethylene chlorotrifluoroethylene
(ECTFE), soluble poly tetrafluoroethene (PFA), polytetrafluoroethylene (PTFE) (PTFE) and polyethylene terephthalate (PET),
It can provide basic wearability preferable friction plate 110 by using above-mentioned basic material；Reinforcing material includes graphite, carbon fiber
And glass fibre, by using above-mentioned reinforcing material, the intensity or wearability that can be further improved friction plate 110 are in this hair
Under bright introduction, it is also an option that basic material or reinforcing material of the other materials as friction plate.
Fig. 2 shows the second embodiments of slidingtype bearing 200 according to the present invention.
It is different from the first embodiment, in a second embodiment, slidingtype bearing 100 is used as the main shaft of wind-driven generator
It holds.
Slidingtype bearing 200 includes following component, and some of components are optional:
Outer ring 108 connect with the main bearing seat 204 of wind-driven generator, engages or one of main bearing seat 204
Point, in the present embodiment, outer ring 208 is a part of main bearing seat 204.Outer ring 108 has the first sliding surface 111.Here, outer
Circle 108 is made of multiple segments 105 and 106 detachable (as being herein 2), these detachable segments 105,106 surround jointly
For accommodating the space of inner ring 201, a part of inner surface of the detachable segment 105,106 of a portion forms sliding surface 111.
In the present embodiment, the detachable segment 105,106 of outer ring 108 is connected to each other by bolt 109 and nut 114.For this purpose, outside
It is formed in circle 108 for bolted through-hole (dotted line in circle 108 of regarding sb. as an outsider).In other embodiments, other connections can be used
Mode such as snaps connection, rivet interlacement, welding.
Inner ring 202 connect with the main shaft 201 of wind-driven generator, engages a part of either main shaft 201, at this
In embodiment, inner ring 202 is a part of main shaft 201.Inner ring 202 has second sliding associated with the first sliding surface 111
Face 112, wherein outer ring 108 and inner ring 202 are configured such that opposite between the first sliding surface 111 and the second sliding surface 111
Sliding allows blade 101 to rotate around the central axes X of inner ring 202 or outer ring 108.Here, the central axes X of outer ring 108 and inner ring 102
Straight line where referring to the axis or central axis of inner ring 202 or outer ring 108.Here, the protrusion of inner ring 202 protrudes into outer ring 108
And it is formed and can constitute the second sliding surface 112 that sliding friction contacts with the first sliding surface 111.Here, inner ring 202 is by single segment
It constitutes, but in other embodiments, inner ring 202 can also be made of multiple detachable segments.
One or more lubrication channels 107, the lubrication channel 107 is by the first sliding surface 111 and/or the second sliding surface
112 are connected to for adding lubricant externally to the first sliding surface 111 and/or the second sliding surface 112 with outside.Lubrication channel
107 be, for example, the channel outputed in outer ring 108 or inner ring 202, and the channel leads to sliding surface.Due to sliding friction of the invention
Contact is not necessarily to leakproofness, therefore 107 channels of the lubrication have no substantial effect on operation and the durability of bearing.On the contrary, the profit
Slide-through road 107 will greatly facilitate the addition of lubricant, without dismantling bearing 200.
Optional friction plate 110, is arranged on the second sliding surface 112.It should be noted here that in other embodiments
In, it can also be arranged on the first sliding surface 111.By the way that the friction plate 110 of respective number and material is arranged, sliding can be provided
Desired sliding friction contact between face 111,112, that is to say, that the frictional force of adjustable sliding contact simultaneously reduces inner ring
202 and outer ring 108 itself abrasion.It, can be in outer ring 108 by the way that the friction plate 110 to be arranged on the second sliding surface 112
Sliding friction is formed between the friction plate 110 of inner ring 102 to contact, and is thus conducive to the reliable of the inner ring 102 for connecting blade 101
Stable frictional rotation, especially can be to avoid the idle running of wheel hub.It rubs it should be understood that being arranged on the first sliding surface 111
Pad 110 be also it is conceivable, in this case, between the friction plate 110 of inner ring 202 and outer ring 108 formed sliding rub
Wipe contact.Friction plate 110 can have basic material and reinforcing material, and wherein basic material is for example including polybenzimidazoles
(PBI), polyimides (PI), polyamidoimide (PAI), polyether-ether-ketone (PEEK), polyphenylene sulfide (PPS), polyphenylsulfone
Resin (PPSU), polysulfones (PSU), polyetherimide (PEI), Kynoar (PVDF), ethylene chlorotrifluoroethylene
(ECTFE), soluble poly tetrafluoroethene (PFA), polytetrafluoroethylene (PTFE) (PTFE) and polyethylene terephthalate (PET),
It can provide basic wearability preferable friction plate 110 by using above-mentioned basic material；Reinforcing material includes graphite, carbon fiber
And glass fibre, by using above-mentioned reinforcing material, the intensity or wearability that can be further improved friction plate 110 are in this hair
Under bright introduction, it is also an option that basic material or reinforcing material of the other materials as friction plate.
Fig. 3 shows the process for safeguarding the method 300 of slidingtype bearing according to the present invention, and wherein dotted line frame indicates
Optional step.
In step 302, one or more of detachable segment is removed, wherein removal operation is outside wheel hub and is leading
It is executed in stream cover.Removing detachable segment for example may include: connector, such as spiral shell for removing and detachable segment being connected to each other
Bolt, nut etc.；And remove connector, such as bolt, nut that detachable segment is connected to installed position.
In step 304, slidingtype bearing is safeguarded.Friction of the attended operation for example including replacement slidingtype bearing
Piece or the detachable segment of replacement etc..Attended operation can also include other reparations or part exchanging operation.
In step 306, slidingtype bearing is installed into back in the detachable segment of removal.For this purpose, connector, such as bolt can be used
Or detachable segment is connected to each other and is connected to original place by nut etc..
In optional step 308, lubricant is added to slidingtype bearing by lubrication channel.The addition of lubricant can be regular
Ground carries out.Alternatively, it is also possible to clean the inside of slidingtype bearing by lubrication channel, can be injected thus into lubrication channel clear
Lotion and cleaning solution.
Fig. 4 shows one embodiment of the friction plate 110 of slidingtype bearing according to the present invention.
As shown in figure 4, friction plate 110 is arranged in the recess 402 of the second sliding surface 112.In other embodiments, it rubs
Piece 110 can also be arranged in the recess 402 of the first sliding surface 112.The height of recess 402 is provided so that friction plate 110
A part expose, to provide force of sliding friction.It, can be significant by the way that friction plate 110 to be placed on to the recess 402 of certain height
The bearing capacity of friction plate 110 and the deformation in reduced thickness direction are improved, and can be fixed by block, cost is lower, replaceable
Property is more preferable.
X-shaped notch 401 is provided on friction plate 110.Notch 401 can be across the whole surface of friction plate 110.It should
It points out, the shape of notch 401 and distribution are only exemplary, in other embodiments, other shapes and distribution can be set
Notch 401.By the way that notch 401 is arranged on friction plate 110, noise can be reduced, reduces contact surface, and play the role of oil storage.
The present invention at least has following the utility model has the advantages that (1) is relative to rolling bearing, and slidingtype bearing of the invention is being run
Face contact between inner ring or friction material and outer ring is provided in the process, therefore the contact stress on unit area is low, and in this way
Face contact to parts precision require also not high therefore of the invention slidingtype bearing do not need high-intensitive material and Gao Jiagong
Precision thus reduces bearing cost；(2) relative to rolling bearing, the sliding surface of slidingtype bearing of the invention is to lubrication
It is required that it is not high, do not need ball bearing that expensive sealing ring and lubricating system；(3) for rolling bearing, after damage
It needs to hang lower entire blade or main shaft, pitch variable bearings or base bearing is maintained or replaced, therefore the process is very expensive and endangers
Dangerous higher, for big megawatt of this future developing trend of marine unit, situation is even more so；And in the present invention
Slidingtype bearing occur internal friction piece damage when, a part of detachable segment can be only removed, then to internal structure
It is safeguarded and is replaced, to eliminate aforementioned hoisting process；And since contact stress is smaller, it is however generally that inner ring and outer ring
It is less likely to be damaged, therefore the reliability of slidingtype bearing of the invention and durability are higher；It include especially detachable in outer ring
In the case where segment, the mounting portion (such as wheel hub) of installation outer ring can be influenced as small as possible in maintenance, so that need not both destroy
The mounting portion (wheel hub) of outer ring, need not also remove the attachment (such as blade) of inner ring, and the detachable segment of the outer ring is torn open
Unloading more easily to carry out (without carrying out in bearing or in blade) in Bearing outer；(4) in this application, pass through by
Inner ring is configured for installing rotatable equipment (such as blade or main shaft), and rotatable equipment can be made uninterruptedly to rotate, this
Because compared with outer ring, the surface of inner ring is almost used for sliding friction contact, therefore can utmostly avoid with it is exposed
The associated disturbing factor in surface (such as undesirable friction, pressure, dirty attachment), to promote to can be rotated equipment, such as
The accurate angular adjustment of blade realizes more stable and reliable rotation；(5) in this application, by setting for adding lubrication
The addition of lubricant is easily implemented in the lubrication channel of agent, without dismantling or destroying bearing；(6) outer ring by bolt and
Wheel hub connection, therefore entire friction plate discord hub contacts, can conveniently carry out safeguarding/replacing；(7) it is put in the friction plate
In the case where setting in the recess of certain height, the bearing capacity of friction plate and the change in reduced thickness direction can be significantly improved
Shape, and fixed by block, cost is lower, and replaceability is more preferable；(8) the shapes notch such as X-type is provided in the Friction Disk Surface
In the case where, noise can be reduced, reduces contact surface, and play the role of oil storage.
Although some embodiments of the present invention are described in present specification, those skilled in the art
Member is it is understood that these embodiments are merely possible to shown in example.Those skilled in the art under the teachings of the present invention may be used
To expect numerous variant schemes, alternative solution and improvement project without beyond the scope of this invention.The appended claims purport
It is limiting the scope of the invention, and is covering the method in the range of these claims itself and its equivalents and knot whereby
Structure.
Claims (14)
1. a kind of slidingtype bearing for wind-driven generator, comprising:
Outer ring is configured to connect or engage with the wheel hub of wind-driven generator or main bearing seat, and wherein outer ring has the
One sliding surface；
Inner ring is configured to connect or engage with the blade of wind-driven generator or main shaft, and wherein inner ring has and first
Associated second sliding surface of sliding surface, wherein outer ring and inner ring are configured such that between the first sliding surface and the second sliding surface
Allow blade or main shaft to rotate around the central axes of inner ring or outer ring relative to sliding；And
One or more lubrication channels, the lubrication channel the first sliding surface and/or the second sliding surface are connected to outside with
In externally to the first sliding surface and/or the second sliding surface addition lubricant.
2. slidingtype bearing according to claim 1, wherein outer ring and/or inner ring have one or more detachable sections
Section.
3. slidingtype bearing according to claim 1, wherein being disposed with one on the first sliding surface and/or the second sliding surface
A or multiple friction plates.
4. slidingtype bearing according to claim 3, wherein the friction plate is arranged on the second sliding surface.
5. slidingtype bearing according to claim 3, wherein being arranged on the friction plate jagged.
6. slidingtype bearing according to claim 1, wherein the wheel hub or main bearing seat of outer ring and wind-driven generator are integrated
It is melted into a part of shape either wheel hub or main bearing seat；And/or
The blade or integrated spindle axis of inner ring and wind-driven generator are melted into a part of shape either blade or main shaft.
7. slidingtype bearing according to claim 1, wherein multiple through-holes are provided on outer ring and/or inner ring, wherein
Outer ring or inner ring can be connect with wheel hub or blade by the through-hole or by inner ring or multiple detachable segments of outer ring
It is connected to each other.
8. slidingtype bearing according to claim 3, wherein the friction plate has one or more of the following
As basic material:
Polybenzimidazoles (PBI)；
Polyimides (PI)；
Polyamidoimide (PAI)
Polyether-ether-ketone (PEEK)；
Polyphenylene sulfide (PPS)；
Polyphenylene sulphone resin (PPSU)；
Polysulfones (PSU)；
Polyetherimide (PEI)；
Kynoar (PVDF)；
Ethylene chlorotrifluoroethylene (ECTFE)；
Soluble poly tetrafluoroethene (PFA)；
Polytetrafluoroethylene (PTFE) (PTFE)；And
Polyethylene terephthalate (PET).
9. slidingtype bearing according to claim 3, wherein the friction plate has one or more of the following
As reinforcing material:
Graphite；
Carbon fiber；And
Glass fibre.
10. slidingtype bearing according to claim 3, wherein one or more of described friction plate is in the first sliding surface
And/or second be arranged such that the friction plate and the first sliding surface and/or the second sliding surface are angled on sliding surface.
11. slidingtype bearing according to claim 3, wherein the friction plate symmetrical cloth in the circumferential direction of outer ring or inner ring
It sets.
12. slidingtype bearing according to claim 3, wherein the friction plate is arranged in the circumferential direction of inner ring or outer ring
In recess.
13. slidingtype bearing according to claim 1, wherein the sliding shaft holds the variable pitch for being used as wind-driven generator
Bearing or base bearing.
14. a kind of for safeguarding according to claim 1 to the method for slidingtype bearing described in one of 13, wherein the slidingtype
The outer ring of bearing and/or inner ring have one or more detachable segments, this method comprises:
One or more of described detachable segment is removed, wherein removal operation is held outside wheel hub and in pod
Row；
Slidingtype bearing is safeguarded；And
Slidingtype bearing is installed into back in the detachable segment of removal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192841.XA CN110056487A (en) | 2019-03-14 | 2019-03-14 | A kind of slidingtype bearing and its maintaining method for wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192841.XA CN110056487A (en) | 2019-03-14 | 2019-03-14 | A kind of slidingtype bearing and its maintaining method for wind-driven generator |
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| CN110056487A true CN110056487A (en) | 2019-07-26 |
Family
ID=67317033
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910192841.XA Pending CN110056487A (en) | 2019-03-14 | 2019-03-14 | A kind of slidingtype bearing and its maintaining method for wind-driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963374A (en) * | 2020-08-19 | 2020-11-20 | 中国船舶重工集团海装风电股份有限公司 | Variable pitch system device of wind generating set |
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| CN111963374A (en) * | 2020-08-19 | 2020-11-20 | 中国船舶重工集团海装风电股份有限公司 | Variable pitch system device of wind generating set |
| CN111963374B (en) * | 2020-08-19 | 2021-10-22 | 中国船舶重工集团海装风电股份有限公司 | Variable pitch system device of wind generating set |
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