CN115539291A - Fixed assembly in wind generating set blade axle top - Google Patents

Fixed assembly in wind generating set blade axle top Download PDF

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Publication number
CN115539291A
CN115539291A CN202210880658.0A CN202210880658A CN115539291A CN 115539291 A CN115539291 A CN 115539291A CN 202210880658 A CN202210880658 A CN 202210880658A CN 115539291 A CN115539291 A CN 115539291A
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CN
China
Prior art keywords
blade shaft
shaft
deep groove
groove ball
ball bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210880658.0A
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Chinese (zh)
Inventor
张效新
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN202210880658.0A priority Critical patent/CN115539291A/en
Publication of CN115539291A publication Critical patent/CN115539291A/en
Withdrawn legal-status Critical Current

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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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • 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)
  • Wind Motors (AREA)

Abstract

The invention relates to a fixed assembly at the top of a blade shaft of a wind generating set, which comprises a blade shaft sleeve bowl, a blade shaft, a first deep groove ball bearing, a second deep groove ball bearing and a movable joint bolt (namely a wire tightener); the blade shaft sleeve bowl comprises a first shaft sleeve part for directly installing and fixing the blade shaft and a second shaft sleeve part connected with the first shaft sleeve part and extending upwards; the stepped hole comprises a first mounting hole and a second mounting hole which is positioned at the bottom of the first mounting hole and has a larger relative diameter; a first deep groove ball bearing is arranged in the second mounting hole; the inner bearing wall on the first deep groove ball bearing is sleeved with the bottom stepped shaft part of the blade shaft; a second deep groove ball bearing is arranged in the first mounting hole; the inner bearing wall of the second deep groove ball bearing is sleeved with the top stepped shaft part of the blade shaft, and the top of the blade shaft penetrates through the stepped hole and then is exposed and connected through hexagonal nut threads; the fixed assembly at the top of the wind generating set blade shaft ensures the tightness and reliability of the installation and positioning of the top of the wind generating set blade shaft.

Description

Fixed assembly in wind generating set blade axle top
Technical Field
The invention relates to the technical field of wind power generation equipment, in particular to a blade shaft top fixing assembly of a wind generating set.
Background
With the continuous development of clean energy, more and more power enterprises are dedicated to research on wind power generation in which wind generators are common devices.
However, for wind power generators, the blade is an essential accessory of the wind power generator, and researchers find that the mainstream fixing methods of the blade shaft in the prior art include: one of them adopts cantilever beam structure hoist and mount, but the fixed effect of top of this kind of mode blade axle is not good, has influenced blade axle's stability and reliability.
Disclosure of Invention
Based on the structure, the invention provides and designs the fixed assembly at the top of the blade shaft of the wind generating set, which overcomes the problem of untight positioning of the blade shaft pointed out in the background art.
The invention provides a fixed assembly at the top of a blade shaft of a wind generating set, which comprises a blade shaft sleeve bowl, a blade shaft, a first deep groove ball bearing, a second deep groove ball bearing and a movable joint bolt (namely a wire tightener);
the blade shaft sleeve bowl comprises a first shaft sleeve part and a second shaft sleeve part, wherein the first shaft sleeve part is used for directly mounting and fixing a blade shaft, and the second shaft sleeve part is connected with the first shaft sleeve part and extends upwards; the second shaft sleeve part is coaxial with the first shaft sleeve part, and the diameter of the second shaft sleeve part is larger than that of the first shaft sleeve part;
the first shaft sleeve part is provided with a step hole along the inside; the stepped hole comprises a first mounting hole and a second mounting hole which is positioned at the bottom of the first mounting hole and has a larger relative diameter; a first deep groove ball bearing is arranged in the second mounting hole; an inner bearing wall on the first deep groove ball bearing is sleeved with a bottom stepped shaft part of the blade shaft; a second deep groove ball bearing is arranged in the first mounting hole; the inner bearing wall of the second deep groove ball bearing is sleeved with the top stepped shaft part of the blade shaft, and the exposed part of the top of the blade shaft penetrates through the stepped hole and is in threaded connection through a hexagonal nut;
the second shaft sleeve part is provided with a plurality of swing bolts along the circumferential sleeve wall direction; the swing bolt penetrates through a through hole in the second shaft sleeve part along the circumferential sleeve wall of the second shaft sleeve part, and locking nuts are arranged on the inner side of the sleeve wall of the through hole and the outer side of the sleeve wall; and the top of the swing bolt is provided with a through hole for a rope to pass through.
Preferably, as an implementation scheme, the cushion also comprises an inner cushion block and an outer cushion block; the embedded block is arranged between the locking nut positioned on the inner side of the sleeve wall and the inner wall surface of the sleeve wall; the outer cushion block is arranged between the locking nut on the outer side of the sleeve wall and the outer wall surface of the sleeve wall.
Preferably, as an implementation scheme, the inner cushion block and the outer cushion block are Q235 steel structure cushion blocks.
Preferably, as an embodiment, the device further comprises a split pin; the hexagonal nut is further provided with a hole, and the cotter pin penetrates through the hole of the hexagonal nut and is connected with the hexagonal nut through a pin.
Preferably, as an embodiment, the swing bolts are four.
Preferably, as an implementation scheme, the device further comprises a elastic check ring, wherein the elastic check ring is arranged at the inner bearing wall at the top position of the first deep groove ball bearing; the elastic retainer ring is used for positioning and limiting the stepped shaft part of the blade shaft passing through the first deep groove ball bearing.
Preferably, as an embodiment, the lock nut is a hexagonal nut.
The wind generating set blade shaft top fixing assembly provided by the invention has the following beneficial effects:
analyzing the main structure of the wind generating set blade shaft top fixing assembly provided by the embodiment of the invention, the assembly mainly comprises a blade shaft sleeve bowl, a blade shaft, a first deep groove ball bearing, a second deep groove ball bearing, a swing bolt (namely a wire tightener) and the like;
wherein, the top position section step shaft of blade axle has been carried out the bearing by the assembly and has been fixed a position, has reduced the bending force of blade root, has reduced the risk that the blade splits, flies off. Meanwhile, the movable joint bolts between the blade shaft and the blade shaft sleeve bowl can realize a further fixing function, 4 movable joint bolts are arranged on a second shaft sleeve part, and locking nuts are arranged on the second shaft sleeve part along the through holes on the circumferential sleeve wall of the second shaft sleeve part and positioned on the inner side of the sleeve wall of the through holes and the outer side of the sleeve wall; the top of the swing bolt is provided with a through hole for the rope to pass through. Therefore, the steel cable can be adopted to sequentially penetrate through the through holes in the swing bolts at the positions, and then the blade shaft sleeve bowl is tightly positioned on the blade shaft through the steel cable (the connection and the positioning of the blade shaft sleeve bowl and the blade shaft are more tight), so that the front, the back, the left and the right of the blade on the blade shaft can not be displaced and are more stable, and the blade shaft only has the rotation action relative to the blade shaft sleeve bowl.
Drawings
Fig. 1 isbase:Sub>A schematic view ofbase:Sub>A wind turbine generator system blade shaft top fixing assembly provided by an embodiment of the invention, in one marked form, inbase:Sub>A sectional view alongbase:Sub>A-base:Sub>A of fig. 3;
FIG. 2 isbase:Sub>A schematic view ofbase:Sub>A wind turbine generator system blade shaft top fixing assembly provided by an embodiment of the invention, which is in another marked form in section along the direction A-A in FIG. 3;
fig. 3 is a schematic structural diagram of a wind turbine generator system blade shaft top fixing assembly provided by an embodiment of the invention.
Reference numbers: a vane axle sleeve bowl 10; a first boss portion 111; a second boss portion 112; a blade shaft 20; a first deep groove ball bearing 30; a second deep groove ball bearing 40; an eye bolt 50; a hexagonal nut 60; a circlip 70; an inner cushion block 80; an outer cushion block 81; a cotter pin 90.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Example one
As shown in fig. 1 to 3, a blade shaft top fixing assembly of a wind generating set according to a first embodiment of the present invention includes a blade shaft sleeve 10, a blade shaft 20, a first deep groove ball bearing 30, a second deep groove ball bearing 40, and a swing bolt 50 (i.e., a wire grip);
the vane shaft sleeve bowl 10 comprises a first shaft sleeve part 111 for directly installing the fixed vane shaft 20 and a second shaft sleeve part 112 connected with the first shaft sleeve part and extending upwards; the second sleeve portion 112 is coaxial with the first sleeve portion 111, and the diameter of the second sleeve portion 112 is larger than that of the first sleeve portion 111;
the first boss portion 111 is provided with a stepped hole along an inside thereof; the stepped hole comprises a first mounting hole and a second mounting hole which is positioned at the bottom of the first mounting hole and has a larger relative diameter; a first deep groove ball bearing 30 is arranged in the second mounting hole; the inner bearing wall of the first deep groove ball bearing 30 is sleeved with the bottom stepped shaft part of the blade shaft; and a second deep groove ball bearing 40 is arranged in the first mounting hole; the inner bearing wall of the second deep groove ball bearing 40 is sleeved with the top stepped shaft part of the blade shaft, and the exposed part of the top of the blade shaft after penetrating through the stepped hole is in threaded connection through a hexagonal nut 60;
the second collar portion 112 is provided with a plurality of the swing bolts 50 distributed along the circumferential collar wall direction thereof; the swing bolt 50 penetrates through a through hole in the second sleeve part 112 along the circumferential sleeve wall thereof, and locking nuts are arranged on the inner side and the outer side of the perforated sleeve wall; the top of the swing bolt 50 is provided with a through hole for passing a rope.
Analyzing the main structure of the wind generating set blade shaft top fixing assembly provided by the embodiment of the invention, the assembly mainly comprises a blade shaft sleeve bowl 10, a blade shaft 20, a first deep groove ball bearing 30, a second deep groove ball bearing 40, an eyelet bolt 50 (i.e. a turnbuckle) and the like;
wherein, the top position section step shaft of blade axle 20 has been carried out the bearing by the assembly and has been fixed a position, has reduced the bending force of blade root, has reduced the risk that the blade splits, flies out. Meanwhile, the swing bolts 50 between the blade shaft 20 and the blade shaft sleeve 10 can realize further fixing function, 4 swing bolts 50 are arranged on the second shaft sleeve part 112, the second shaft sleeve part 112 is provided with locking nuts along the through holes on the circumferential sleeve wall and positioned on the inner side and the outer side of the perforated sleeve wall; the top of the swing bolt 50 is provided with a through hole for passing a rope. Therefore, the steel cable can be adopted to sequentially pass through the through holes on the swing bolts 50 at the plurality of positions, and then the blade shaft sleeve bowl 10 is tightly positioned on the blade shaft 20 through the steel cable (so that the connection and the positioning of the two are more tight), so that the front, the back, the left and the right of the blade on the blade shaft can not be displaced and are more stable, and the blade shaft only has the rotation action relative to the blade shaft sleeve bowl 10.
Meanwhile, the blades can flexibly adjust the windward angle due to the bearings, so that the blades and the wind wheel are safe and the efficiency is maximized. Meanwhile, the top fixing combination body of the blade shaft of the wind generating set provided by the embodiment of the invention has a more special and firm fastening position mode, so that a heavier blade structure can be borne, and meanwhile, a lighter blade can be selected as the blade, so that the cost of the blade can be saved.
The following detailed description is made of a specific structure and specific technical effects of the wind turbine generator system blade shaft top fixing assembly provided by the first embodiment of the present invention:
preferably, as an embodiment, the swing bolts 50 are four.
Preferably, as an implementation mode, the present invention further includes a circlip 70, where the circlip 70 is disposed at the inner bearing wall at the top position of the first deep groove ball bearing 30; the circlip 70 serves to position and limit the stepped shaft portion of the blade shaft 20 passing through the first deep groove ball bearing 30.
It should be noted that the elastic collar 70 may play a positioning role, specifically, a positioning and limiting role is performed on a stepped shaft portion of the blade shaft 20 passing through the first deep groove ball bearing 30, so as to increase a pre-tightening force.
Preferably, as an embodiment, the lock nut 60 is a hexagonal nut.
Preferably, as an implementation mode, the device further comprises an inner cushion block 80 and an outer cushion block 81; the embedded block 7 is arranged between the locking nut positioned on the inner side of the sleeve wall and the inner wall surface of the sleeve wall; the outer cushion block 81 is disposed between the lock nut on the outer side of the sleeve wall and the outer wall surface of the sleeve wall.
Preferably, as an implementation mode, the inner cushion block 80 and the outer cushion block 81 are both Q235 steel structure cushion blocks.
Preferably, as an embodiment, a cotter 90; the hexagonal nut 60 is further provided with an opening, and the cotter pin 90 penetrates through the opening of the hexagonal nut 60 to be in pin connection with the hexagonal nut 60.
According to the fixing assembly for the top of the blade shaft of the wind generating set, which is provided by the embodiment of the invention, the fixing assembly with a specific structural form can be used for realizing a tight positioning and fixing effect on the blade shaft, so that the assembling reliability and the stability of wind generating equipment are improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It should be noted that the above-mentioned embodiments only express several implementation modes of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (7)

1. A fixed assembly at the top of a blade shaft of a wind generating set is characterized by comprising a blade shaft sleeve bowl, a blade shaft, a first deep groove ball bearing, a second deep groove ball bearing and an eyelet bolt (namely a wire tightener);
the blade shaft sleeve bowl comprises a first shaft sleeve part for directly mounting and fixing a blade shaft and a second shaft sleeve part connected with the first shaft sleeve part and extending upwards; the second shaft sleeve part is coaxial with the first shaft sleeve part, and the diameter of the second shaft sleeve part is larger than that of the first shaft sleeve part;
the first shaft sleeve part is provided with a step hole along the inside; the stepped hole comprises a first mounting hole and a second mounting hole which is positioned at the bottom of the first mounting hole and has a larger relative diameter; a first deep groove ball bearing is arranged in the second mounting hole; the inner bearing wall of the first deep groove ball bearing is sleeved with the bottom stepped shaft part of the blade shaft; a second deep groove ball bearing is arranged in the first mounting hole; the inner bearing wall of the second deep groove ball bearing is sleeved with the top stepped shaft part of the blade shaft, and the exposed part of the top of the blade shaft penetrates through the stepped hole and is in threaded connection through a hexagonal nut;
the second shaft sleeve part is distributed with a plurality of swing bolts along the circumferential sleeve wall direction; the swing bolt penetrates through a through hole in the second shaft sleeve part along the circumferential sleeve wall of the second shaft sleeve part, and locking nuts are arranged on the inner side of the sleeve wall of the through hole and the outer side of the sleeve wall; and the top of the swing bolt is provided with a through hole for a rope to pass through.
2. The wind turbine blade shaft top mount assembly of claim 1, further comprising an inner spacer and an outer spacer; the embedded block is arranged between the locking nut positioned on the inner side of the sleeve wall and the inner wall surface of the sleeve wall; the outer cushion block is arranged between the locking nut on the outer side of the sleeve wall and the outer wall surface of the sleeve wall.
3. The wind turbine blade shaft top mount assembly of claim 2 wherein the inner and outer spacers are each a Q235 steel spacer.
4. The wind turbine blade shaft top mount assembly of claim 1, further comprising a cotter pin; the hexagonal nut is further provided with a hole, and the cotter pin penetrates through the hole of the hexagonal nut and is connected with the hexagonal nut through the pin.
5. Wind park blade shaft top fixing combination according to claim 1, wherein the swing bolts are four.
6. The wind generating set blade shaft top fixing combination as claimed in claim 1, further comprising a circlip provided at an inner bearing wall at a top position of the first deep groove ball bearing; the elastic retainer ring is used for positioning and limiting the stepped shaft part of the blade shaft passing through the first deep groove ball bearing.
7. The wind turbine blade shaft top mount assembly of claim 1, wherein the lock nut is a hex nut.
CN202210880658.0A 2022-07-25 2022-07-25 Fixed assembly in wind generating set blade axle top Withdrawn CN115539291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210880658.0A CN115539291A (en) 2022-07-25 2022-07-25 Fixed assembly in wind generating set blade axle top

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210880658.0A CN115539291A (en) 2022-07-25 2022-07-25 Fixed assembly in wind generating set blade axle top

Publications (1)

Publication Number Publication Date
CN115539291A true CN115539291A (en) 2022-12-30

Family

ID=84723410

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210880658.0A Withdrawn CN115539291A (en) 2022-07-25 2022-07-25 Fixed assembly in wind generating set blade axle top

Country Status (1)

Country Link
CN (1) CN115539291A (en)

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Application publication date: 20221230

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