CN109058300A - A kind of yaw, pitch variable bearings structure and method - Google Patents
A kind of yaw, pitch variable bearings structure and method Download PDFInfo
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- CN109058300A CN109058300A CN201810911639.3A CN201810911639A CN109058300A CN 109058300 A CN109058300 A CN 109058300A CN 201810911639 A CN201810911639 A CN 201810911639A CN 109058300 A CN109058300 A CN 109058300A
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- bearing
- outer ring
- inner race
- yaw
- pitch variable
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a kind of yaws, pitch variable bearings structure and method, it solves the prior art and needs to shut down replacement bearing, the problem of improving cost, with effectively shortening construction period, the beneficial effect of replacement cost is effectively reduced, its scheme is as follows: a kind of yaw, pitch variable bearings structure, including the bearing outer ring set gradually from outside to inside, bearing centre circle and bearing inner race with the gear teeth, bearing inner race and driving tooth engagement, bearing outer ring connects wheel hub or tower, bearing centre circle connects mainframe or blade, bearing centre circle is connect with bearing outer ring by rolling bearing so that bearing centre circle is rotated relative to bearing outer ring, bearing inner race is detachably connected with bearing centre circle.
Description
Technical field
The present invention relates to field of wind power equipment, more particularly to a kind of yaw, pitch variable bearings structure and method.
Background technique
In megawatt-level wind unit, yaw, kernel component of the pitch variable bearings as unit, increasingly by each complete system plant
The attention of family, with sharply riseing for installation amount, yaw, the tooth surface abrasion problem of pitch variable bearings are also increasingly prominent, how to solve
Tooth surface abrasion problem becomes a great problem of the pendulum in face of each complete machine producer.
Continuity, stability and the precision that yaw, pitch variable bearings directly influence yaw, variable pitch acts, however axis
The tooth surface abrasion phenomenon held but is difficult to avoid that, and more seriously, for 3-5 with regard to serious wear, part wears are tight under normal conditions
Weight replace, and replacement bearing can not individually carry out some component because of the limitation of internal structure in industry at present
Replacement, is both needed to complete machine and is dismantled, be embodied in the deficiency in terms of following three:
1) once complete machine is dismantled, result in shutting down, downtime is long, causes complete machine to may not apply to produce, because of bearing
Quality is big, and volume is big, and replacement usually requires a week, to cause huge economic loss, often replacement is to corporate image
Biggish negative effect is generated, the long term growth of enterprise is unfavorable for；
2) complete machine has 3 pitch variable bearings and 1 yaw bearing, and replacement every bearing expense itself needs 6w-8w, that
If if replacing all bearing, economic cost as one can imagine, it is invisible to increase to cause integral replacing cost very high
Business burden；
3) since replacement bearing needs complete machine to be lifted, the weight of complete machine needs the lifting of larger tonnage in 80-100t
Machine is disassembled and installed, and is changed installation and required more manpower, causes human cost and hoisting machine to lease cost big
It is big to improve, it is contemplated that the high disassembly cost of complete machine solves the problems, such as that bearing tooth surface abrasion is very urgent.
4) manpower and material resources that more ventilating fan needs are more, and loop wheel machine equipment is big, and there are some potential safety problemss.
5) mode of other existing replacement bearings, structure setting is complicated, and replacement is same time-consuming and laborious.
Therefore, it is necessary to study a kind of method for improving gear teeth pivoting support tooth surface abrasion.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of yaw, pitch variable bearings structure, tooth can effectively be solved
Influence of the surface wear to blower entirety, after the bearing flank of tooth is worn, without complete machine dismantle, can quickly, efficiently complete axis
Hold the replacement of the gear teeth.
It is a kind of yaw, the concrete scheme of pitch variable bearings structure it is as follows:
It is a kind of yaw, pitch variable bearings structure, including set gradually from outside to inside bearing outer ring, bearing centre circle and with wheel
The bearing inner race of tooth, bearing inner race and driving tooth engagement, bearing outer ring connect wheel hub or tower, and bearing centre circle connects mainframe
Or blade, bearing centre circle is connect with bearing outer ring by rolling bearing so that bearing centre circle is relative to bearing outer ring rotation, axis
Inner ring is held to be detachably connected with bearing centre circle.
When carrying out cabin or blade rotates, sliding tooth engages bearing inner race, and bearing inner race band dynamic bearing centre circle rotates,
And then realize cabin or blade rotation.Due to that bearing inner race gear tooth portions are independent, when gear teeth tooth surface abrasion is serious
When, especially pitch variable bearings initial engagement position serious wear when, bearing inner race can be connected to disassembling bolts, and in rolling bearing
Circle, turns to non-mesh regional for the flank of tooth of serious wear, re-secures bearing inner race, can easily and efficiently realize abrasion
Tooth replacement, due to that can repeat, repeatedly be rotated, the gear teeth of bearing inner race can satisfy the mill of complete machine life cycle management completely
Damage requires, and then thoroughly solves the industry problems of pitch variable bearings tooth surface abrasion.When overall wear occurs for bearing inner race gear tooth portions
Or when well damage, bearing inner race can also be removed, be replaced.
Further, the bearing inner race is connect by connecting bolt with the bearing centre circle, bearing centre circle inner periphery
Direction is uniformly arranged multiple threaded holes, and bearing inner race is equipped with multiple with through-hole that is connecting bolt and cooperate；
Wherein, along the two rows of connection bolts of diametrical direction setting of bearing inner race, connection bolt is set to the bearing inner race gear teeth
Two sides, guarantee connection reliability.
The segmentation that the bearing inner race is integral structure or can splice including multistage, segment end portion be arranged groove or with
Segmented assembly is bearing inner race by the protrusion of groove cooperation, and the structure of multistage assembly facilitates installation, and to yaw bearing, divides
Segment structure is more convenient for replacing.
Washer is set at the bearing inner race connection bolt, and washer is U-shaped washer, and the inner ring of washer and bearing inner race is round
Arc is adapted.
Further, the rolling bearing is multiple rolling elements, adjacent rolling element interval set distance setting.
Further, the bearing inner race is the component with the gear teeth, and the gear teeth are evenly arranged in the inner face of bearing inner race,
Side is stayed to be arranged in the two sides of the bearing inner race gear teeth.
Further, sealing ring is respectively set in the two sides of the bearing centre circle and bearing outer ring junction, in this way in bearing
Closed lubricating place is constituted between outer ring and bearing centre circle.
Further, the gear teeth are set to the center of the bearing inner race inner face.
For overcome the deficiencies in the prior art, the present invention also provides a kind of yaws convenient for safeguarding, pitch variable bearings structure
Method, using a kind of yaw, pitch variable bearings structure；For yaw bearing structure, bearing inner race gear wear is serious, directly
Connect the bearing inner race of replacement pulley teeth；To pitch variable bearings structure, bearing mesh regional is 0-90 ° of range, initial engagement position mill
Usually only 2-3 tooth that be more serious, and wearing is damaged, when serious wear, the bearing arrangement that the application uses only needs to turn
The flank of tooth of serious wear is turned to non-mesh regional, re-secures bearing inner race by dynamic bearing inner ring, and maintenance speed in this way is fast,
It can repeatedly repair, replacement cost is lower, alternatively, re-replacing segmentation to the bearing inner race of segmentation.
For overcome the deficiencies in the prior art, the present invention also provides a kind of yaws, pitch variable bearings structure, including from introversion
Bearing inner race, bearing centre circle and the bearing outer ring with the gear teeth set gradually outside, bearing outer ring and driving tooth engagement, in bearing
Perhaps tower bearing centre circle connection mainframe or blade, bearing centre circle and bearing inner race pass through rolling bearing to circle connection wheel hub
It connects so that bearing centre circle is rotated relative to bearing inner race, bearing outer ring is detachably connected with bearing centre circle.
Further, the bearing outer ring is connect by connecting bolt with the bearing centre circle, bearing centre circle inner periphery
Direction is uniformly arranged multiple threaded holes, and bearing outer ring is equipped with multiple with through-hole that is connecting bolt and cooperate；
Alternatively, along the two rows of connection bolts of diametrical direction setting of bearing outer ring.
Further, the segmentation that the bearing outer ring is integral structure or can splice including multistage.
Further, washer is set at the bearing outer ring connection bolt, washer is U-shaped washer, and outside washer and bearing
The outer ring arc of circle is adapted.
For overcome the deficiencies in the prior art, the present invention also provides a kind of yaws convenient for safeguarding, pitch variable bearings structure
Method, using a kind of yaw, pitch variable bearings structure, for the pitch variable bearings structure of initial engagement position serious wear,
Bearing outer ring is removed, rolling bearing outer ring, the flank of tooth of serious wear is turned into non-mesh regional, is re-secured outside bearing
Circle；For yaw bearing structure, bearing outer ring gear wear is serious, directly replaces the bearing outer ring of pulley teeth；
Alternatively, can directly replace the bearing outer ring segmentation of serious wear to segmented pitch variable bearings structure.
Compared with prior art, the beneficial effects of the present invention are:
1) present invention is applied widely by integrally-built setting, no matter rolling bearing inner ring or bearing outer ring, and also
It is to replace bearing inner race or bearing inner race, it is convenient, fast, and entire construction period is substantially reduced, it avoids because of complete machine
It disassembly and the huge cost of bring and shuts down for a long time, the industry problems that can not be replaced after very good solution tooth surface abrasion,
Conscientiously the safe and reliable operation of bearing is ensured.
2) present invention replaces bearing inner race or bearing outer ring more by the way that bearing inner race and bearing centre circle to be detachably connected
Convenient, original without integral replacing integral bearing, without shutting down the long period, effectively save economic cost.
3) present invention not only facilitates the connection with bearing centre circle by the setting of Novel bearing structure, easy to disassemble, and
Guarantee easy disassembly, guarantee bearing inner race and drives the reliability of tooth engagement.
4) present invention can select the substitute mode different to bearing inner race or bearing outer ring for different situations, not only replace
Speed is fast, and to the bearing inner race or bearing outer ring of segmented, replaces more convenient.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is bearing arrangement schematic diagram of the present invention；
Fig. 2 is A-A diagrammatic cross-section in Fig. 1 of the present invention；
Fig. 3 is the diagrammatic cross-section of 2 axis bearing structure of the embodiment of the present invention；
Wherein, 1. bearing outer ring, 2. rolling elements, 3. sealing rings, 4. bearing centre circles, 5. bearing inner races, 6. connection bolts,
7.U type washer.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this Shen
Please propose it is a kind of yaw, pitch variable bearings structure.
Embodiment 1
In a kind of typical embodiment of the application, as shown in Figure 1, a kind of yaw, pitch variable bearings structure, including from outer
Bearing outer ring 1, bearing centre circle 4 and the bearing inner race 5 with the gear teeth inwardly set gradually, bearing inner race 5 and driving tooth engagement,
Bearing outer ring 1 connects wheel hub, and perhaps tower bearing centre circle 4 connects mainframe or blade, and bearing centre circle 4 and bearing outer ring 1 are logical
It crosses rolling bearing to connect so that bearing centre circle 4 is rotated relative to bearing outer ring 1, bearing outer ring 1 and bearing centre circle 4 pass through rolling element
2 constitute the swing mechanism of bearings, and bearing inner race 5 is detachably connected with bearing centre circle 4, bearing inner race 4 be integral structure or
Including the segmentation that multistage can splice, it is bearing inner race by segmented assembly that groove or the protrusion with groove cooperation, which is arranged, in segment end portion,
The structure of multistage assembly facilitates installation.
When carrying out cabin or blade rotates, sliding tooth engages bearing inner race 5, and bearing inner race 5 is with 4 turns of dynamic bearing centre circle
It is dynamic, and then realize cabin or blade rotation.Due to that 5 gear tooth portions of bearing inner race are independent, when gear teeth tooth surface abrasion
When serious, especially pitch variable bearings initial engagement position serious wear when, bearing inner race can be connected to disassembling bolts, and rotation axis
Inner ring is held, the flank of tooth of serious wear is turned into non-mesh regional, re-secures bearing inner race, can easily and efficiently be realized
Tooth replacement is worn, due to that can repeat, repeatedly be rotated, the gear teeth of bearing inner race can satisfy complete machine life cycle management completely
Wear requirements, and then thoroughly solve the industry problems of pitch variable bearings tooth surface abrasion.When entirety occurs for bearing inner race gear tooth portions
When abrasion or well damage, bearing inner race can also be removed, be replaced.
Wherein, rolling bearing is multiple rolling elements 2, and adjacent rolling element 2 is spaced set distance setting, and rolling element 2 is embedded in
Outside bearing centre circle and inside bearing outer ring.
Bearing inner race 5 is the component with the gear teeth, and the gear teeth are evenly arranged in the inner face of bearing inner race 5, and bearing inner race 5 is taken turns
Side is stayed to be arranged in the two sides of tooth.Sealing ring 3 is respectively set in the two sides of bearing centre circle 4 and 1 junction of bearing outer ring, in this way outside bearing
Closed lubricating place is constituted between circle 1 and bearing centre circle 4.
Bearing inner race 5 is connect by connecting bolt 6 with the bearing centre circle 4, and bearing inner race passes through connection bolt and institute
The bearing centre circle connection stated, bearing centre circle inner circle circumferential direction are uniformly arranged multiple threaded holes, bearing inner race be equipped with it is multiple with connect
The through-hole of bolt cooperation；Along the two rows of connection bolts of diametrical direction setting of bearing inner race, connection bolt is set to bearing inner race wheel
The two sides of tooth guarantee the reliability of connection, and the specification and quantity for connecting bolt are determined according to specific LOAD FOR.
Bearing inner race, which connects, is arranged washer at bolt, washer is U-shaped washer, and the washer is according to the inner ring of bearing inner race 5 circle
Arc is customized.
Embodiment 2
For overcome the deficiencies in the prior art, as shown in figure 3, the present invention also provides a kind of yaw, pitch variable bearings structure,
The structure is external toothing formula bearing arrangement, including bearing inner race 5, the bearing centre circle 4 and with the gear teeth set gradually from inside to outside
Bearing outer ring 1, bearing outer ring 1 and driving tooth engagement, bearing inner race 4 connect wheel hub or tower, and bearing centre circle 4 connects host
Frame or blade, bearing centre circle 4 is connect with bearing inner race 5 by rolling bearing so that bearing centre circle 4 is revolved relative to bearing inner race 5
Turn, bearing outer ring 1 is detachably connected with bearing centre circle 4.
Bearing outer ring 1 is connect by connecting bolt 6 with the bearing centre circle 4, and 4 inner circle circumferential direction of bearing centre circle is uniformly set
Set multiple threaded holes, bearing outer ring 1 is equipped with multiple with through-hole that is connecting bolt 6 and cooperate；
Alternatively, along the two rows of connection bolts 6 of diametrical direction setting of bearing outer ring 1.Bearing outer ring 1 be integral structure or
Person includes the segmentation that multistage can splice.Bearing outer ring 1, which connects, is arranged washer at bolt, washer is U-shaped washer 7, and washer and axis
The outer ring arc of bearing outer-ring is adapted.
For overcome the deficiencies in the prior art, the present invention also provides a kind of yaws convenient for safeguarding, pitch variable bearings structure
Method, using a kind of yaw, pitch variable bearings structure, for the pitch variable bearings structure of initial engagement position serious wear,
Bearing outer ring is removed, rolling bearing outer ring, the flank of tooth of serious wear is turned into non-mesh regional, is re-secured outside bearing
Circle；For yaw bearing structure, bearing outer ring gear wear is serious, directly replaces the bearing outer ring of pulley teeth；
Alternatively, can directly replace the bearing outer ring segmentation of serious wear to segmented pitch variable bearings structure.
To sum up, bearing arrangement provided by the invention, by the way that bearing is divided into outer ring, centre circle and inner ring three parts, well
It solves the problems, such as gear teeth replacement, not only reduces the replacement cost of a whole set of bearing, and eliminate the lifting of complete machine disassembly, fortune
Defeated, cost of labor, it is safer and more reliable, and the replacement cycle is substantially reduced, ensure the normal operation of complete machine.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of yaw, pitch variable bearings structure, which is characterized in that including set gradually from outside to inside bearing outer ring, in bearing
Circle and the bearing inner race with the gear teeth, bearing inner race and driving tooth engagement, bearing outer ring connect wheel hub or tower, bearing centre circle
Connect mainframe or blade, bearing centre circle connect with bearing outer ring by rolling bearing so that bearing centre circle relative to bearing outside
Circle rotation, bearing inner race are detachably connected with bearing centre circle.
2. a kind of yaw according to claim 1, pitch variable bearings structure, which is characterized in that the bearing inner race passes through company
Connecting bolt is connect with the bearing centre circle, and bearing centre circle inner circle circumferential direction is uniformly arranged multiple threaded holes, and bearing inner race is equipped with
It is multiple with connect bolt cooperation through-hole；
Alternatively, along the two rows of connection bolts of diametrical direction setting of bearing inner race.
3. a kind of yaw according to claim 1, pitch variable bearings structure, which is characterized in that the bearing inner race is one whole
Body structure or the segmentation that can splice including multistage.
4. a kind of yaw according to claim 2, pitch variable bearings structure, which is characterized in that the bearing inner race connects spiral shell
Washer is set at bolt, and washer is U-shaped washer, and the inner ring circular arc of washer and bearing inner race is adapted.
5. a kind of method of yaw convenient for safeguarding, pitch variable bearings structure, which is characterized in that appoint using according to claim 1-4
A kind of yaw, pitch variable bearings structure described in one, for the pitch variable bearings structure of initial engagement position serious wear, by bearing
Inner ring is removed, and the flank of tooth of serious wear is turned to non-mesh regional, re-secures bearing inner race by rolling bearing inner ring；For
Yaw bearing structure, bearing inner race gear wear is serious, directly replaces the bearing inner race of pulley teeth.
6. a kind of yaw, pitch variable bearings structure, which is characterized in that including set gradually from inside to outside bearing inner race, in bearing
Circle and the bearing outer ring with the gear teeth, bearing outer ring and driving tooth engagement, bearing inner race connect wheel hub or tower, bearing centre circle
Mainframe or blade are connected, bearing centre circle is connect with bearing inner race by rolling bearing so that bearing centre circle is relative in bearing
Circle rotation, bearing outer ring are detachably connected with bearing centre circle.
7. a kind of yaw according to claim 6, pitch variable bearings structure, which is characterized in that the bearing outer ring passes through company
Connecting bolt is connect with the bearing centre circle, and bearing centre circle inner circle circumferential direction is uniformly arranged multiple threaded holes, and bearing outer ring is equipped with
It is multiple with connect bolt cooperation through-hole；
Alternatively, along the two rows of connection bolts of diametrical direction setting of bearing outer ring.
8. a kind of yaw according to claim 6, pitch variable bearings structure, which is characterized in that the bearing outer ring is one whole
Body structure or the segmentation that can splice including multistage.
9. a kind of yaw according to claim 7, pitch variable bearings structure, which is characterized in that the bearing outer ring connects spiral shell
Washer is set at bolt, and washer is U-shaped washer, and the outer ring arc of washer and bearing outer ring is adapted.
10. a kind of method of yaw convenient for safeguarding, pitch variable bearings structure, which is characterized in that appoint using according in claim 6-9
A kind of yaw, pitch variable bearings structure described in one, for the pitch variable bearings structure of initial engagement position serious wear, by bearing
Outer ring is removed, and the flank of tooth of serious wear is turned to non-mesh regional, re-secures bearing outer ring by rolling bearing outer ring；For
Yaw bearing structure, bearing outer ring gear wear is serious, directly replaces the bearing outer ring of pulley teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911639.3A CN109058300B (en) | 2018-08-10 | 2018-08-10 | Yaw and pitch bearing structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911639.3A CN109058300B (en) | 2018-08-10 | 2018-08-10 | Yaw and pitch bearing structure and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109058300A true CN109058300A (en) | 2018-12-21 |
| CN109058300B CN109058300B (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810911639.3A Active CN109058300B (en) | 2018-08-10 | 2018-08-10 | Yaw and pitch bearing structure and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826865A (en) * | 2019-01-09 | 2019-05-31 | 烟台天成机械有限公司 | A kind of wind power generating set raceway maintenance grease maintenance-free method |
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| CN205638816U (en) * | 2016-05-23 | 2016-10-12 | 湘电风能有限公司 | Aerogenerator unit is with driftage bearing and aerogenerator |
| CN206305796U (en) * | 2016-11-29 | 2017-07-07 | 沈阳航天新光集团有限公司 | Face of cylinder hole processing clamp |
| CN106712328A (en) * | 2016-12-15 | 2017-05-24 | 广东威灵电机制造有限公司 | Stator and motor equipped with stator |
| CN107044487A (en) * | 2017-01-04 | 2017-08-15 | 洛阳新强联回转支承股份有限公司 | A kind of pivoting support of replaceable part tip edge |
| CN206942929U (en) * | 2017-07-19 | 2018-01-30 | 保定中科新能源系统质量检测有限公司 | A kind of Wind turbines yaw brake disc |
| CN207131734U (en) * | 2017-08-10 | 2018-03-23 | 国电联合动力技术有限公司 | A kind of pitch variable bearings of Wind turbines and the pitch-controlled system comprising the pitch variable bearings |
| CN108194275A (en) * | 2018-03-02 | 2018-06-22 | 东方电气风电有限公司 | A kind of wind-driven generator mainframe and tower connection structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109826865A (en) * | 2019-01-09 | 2019-05-31 | 烟台天成机械有限公司 | A kind of wind power generating set raceway maintenance grease maintenance-free method |
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