CN106930908B - Variable-pitch bearing assembly - Google Patents
Variable-pitch bearing assembly Download PDFInfo
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- CN106930908B CN106930908B CN201710366530.1A CN201710366530A CN106930908B CN 106930908 B CN106930908 B CN 106930908B CN 201710366530 A CN201710366530 A CN 201710366530A CN 106930908 B CN106930908 B CN 106930908B
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- web plate
- pin shaft
- sleeve
- pitch bearing
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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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
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention belongs to the technical field of variable pitch transmission parts of wind generating sets, and particularly relates to a variable pitch bearing assembly. The variable-pitch bearing assembly comprises a fixed seat assembly, a first web plate, a second web plate and a variable-pitch bearing, wherein the outer ring of the variable-pitch bearing is fixed on a hub, the inner ring of the variable-pitch bearing is connected with a blade, and the hub and the blade are respectively arranged on two sides of the variable-pitch bearing; the fixing seat assembly is used for installing an actuator hinge joint, and a plurality of surfaces which are attached to the first web blade side and the second web hub side are arranged on the supporting structure. The beneficial effects are as follows: the fixing seat is of a simple supporting beam structure to the two ends of the pin shaft, the stress condition of the pin shaft is improved, the fixing seat can use cheap castings, and other parts are simple in structure and low in cost; the support structure is arranged between the first web plate and the second web plate, so that the connection rigidity of the first web plate and the second web plate to the fixing seat is enhanced, and the undesired deformation is reduced.
Description
Technical Field
The invention belongs to the technical field of variable pitch transmission parts of wind generating sets, and particularly relates to a variable pitch bearing assembly.
Background
The variable pitch type wind generating set achieves the purpose of adjusting the generating power of the wind generating set and controlling wind load by changing the pitch angle of blades. The hydraulic pitch technology is increasingly applied to the pitch wind generating set due to the advantages of high reliability, good dynamic response and the like. The hydraulic pitch system of the invention CN204755199 is characterized in that the pitch actuator is a crank block mechanism, a pin shaft penetrates through eccentric holes of inner and outer webs, and the inner and outer webs are connected to an inner ring of a pitch bearing. When the pitch motion is performed, the actuator pushes and pulls the pin shaft, the pin shaft transmits driving force through the inner web plate and the outer web plate, and the inner ring of the pitch bearing is driven to rotate relative to the outer ring, so that the pitch motion is completed. However, the invention CN204755199 has the following problems: the pin shaft is a cantilever beam, has poor bearing capacity and needs to be manufactured by a forging piece; the dimension of the pin shaft penetrating through the inner web plate and the outer web plate in the length direction is large and high in cost. Patent WO2015090655A1 discloses a technical scheme of a variable pitch bearing assembly, concentric circular holes are formed in eccentric positions of an inner web plate and an outer web plate, a step pin shaft penetrates through the concentric circular holes in the inner web plate and the outer web plate from the outer side, and an actuator is connected to the step pin shaft. The step pin shaft has the defects of cantilever beam, poor stress, complex structure and high cost.
Disclosure of Invention
The invention provides a variable-pitch bearing assembly for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
the variable pitch bearing assembly comprises a fixed seat assembly, a first web plate, a second web plate and a variable pitch bearing, wherein an outer ring of the variable pitch bearing is fixed on a hub, an inner ring of the variable pitch bearing is connected with blades, and the hub and the blades are respectively arranged on two sides of the variable pitch bearing; the first web plate is connected to the hub side of the inner ring of the variable-pitch bearing; the second web is connected to the blade side of the inner ring of the variable-pitch bearing; the fixed seat assembly is used for installing an actuator hinge joint, and is arranged on one side of the rotation axis of the variable-pitch bearing, and the bottom surface of the fixed seat assembly is attached to the hub side of the first web plate; the fixing seat assembly, the first web plate and the second web plate are connected together through a plurality of connecting bolts, a supporting structure is arranged around the connecting bolts, and a plurality of surfaces attached to the blade side of the first web plate and the hub side of the second web plate are arranged on the supporting structure.
Further, the fixed seat assembly comprises a fixed seat and a pin shaft; the bottom surface of the fixed seat is provided with a plurality of threaded holes; the middle part of the fixed seat is provided with a hinge joint accommodating groove; the hinge joint accommodating groove is internally provided with a first groove surface and a second groove surface which are parallel to the bottom surface of the fixed seat; the first groove surface is arranged on the hub side, a first pin shaft hole is formed in the first groove surface, and the first pin shaft hole penetrates through the top of the fixing seat; the second groove surface is arranged on the blade side, a second pin shaft hole is formed in the second groove surface, and the first pin shaft hole is coaxial with the second pin shaft hole; taking a vertical plane of the axis of the first pin shaft hole as a split surface, and splitting a fixing seat at the hinge joint accommodating groove, wherein the cross section of the fixing seat is C-shaped; one end of the pin shaft is arranged in the first pin shaft hole, and the other end of the pin shaft is arranged in the second pin shaft hole; the hinge joint of the actuator is arranged between the first groove surface and the second groove surface of the hinge joint accommodating groove and hinged on the pin shaft.
Further, through holes are formed in the positions, corresponding to the bottom surfaces of the fixing seats, of the first web plate and the second web plate, and the connecting bolts sequentially penetrate through the through holes in the second web plate and the first web plate and are screwed into the threaded holes in the fixing seats.
Further, the supporting structure comprises an inner sleeve and an outer sleeve, the inner sleeve and the outer sleeve are cylindrical structural members with two open ends, the inner sleeve is contained in the outer sleeve, an annular gap is formed between the inner sleeve and the outer sleeve, connecting bolts are distributed in the annular gap, one ends of the inner sleeve and the outer sleeve are attached to the blade sides of the first web, and the other ends of the inner sleeve and the outer sleeve are attached to the hub sides of the second web.
Further, bearing structure includes the supporting cushion, and a plurality of through-holes along the supporting cushion direction of height have been seted up to the inside of supporting cushion, and connecting bolt passes the through-hole, and the one end of supporting cushion is laminated with the blade side of first web, and the other end of supporting cushion is laminated with the wheel hub side of second web.
Further, bearing structure includes the baffle sleeve, and the baffle sleeve comprises outside sleeve and baffle, and outside sleeve is both ends open-ended tubular structure spare, is provided with the baffle that extends to outside sleeve both ends on the length in outside sleeve inside, and a plurality of through-holes are kept apart to the baffle with outside sleeve, and connecting bolt passes the through-hole, and the laminating of the blade side of baffle sleeve one end and first web, the laminating of the hub side of baffle sleeve other end and second web.
Further, bearing structure includes a set of little sleeve, and little sleeve is both ends open-ended tubular structure spare, and little sleeve hole is greater than connecting bolt diameter, and every connecting bolt passes a little sleeve, and little telescopic one end is laminated with the blade side of first web, and little telescopic other end is laminated with the wheel hub side of second web.
The beneficial effects of the invention are as follows: the fixing seat is of a simple supporting beam structure to the two ends of the pin shaft, the stress condition of the pin shaft is improved, the fixing seat can use cheap castings, and other parts are simple in structure and low in cost; the support structure is arranged between the first web plate and the second web plate, so that the connection rigidity of the first web plate and the second web plate to the fixing seat is enhanced, and the undesired deformation is reduced.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic view of a portion of an impeller embodying the present invention;
FIG. 3 is a schematic view of the structure of the fixing base of the present invention;
FIG. 4 is a perspective cross-sectional view of the fixing base of the present invention;
FIG. 5 is a cross-sectional view of the fixing base of the present invention at the joint receiving slot;
FIG. 6 is a schematic view of a first embodiment of a support structure according to the present invention;
FIG. 7 is a schematic view of a second embodiment of a support structure according to the present invention;
FIG. 8 is a schematic view of a third embodiment of a support structure according to the present invention;
fig. 9 is a schematic structural view of a fourth embodiment of the support structure of the present invention.
In the figure, 1 fixing base assembly, 1.1 fixing base, 1.1.1 fixing base bottom surface, 1.1.2 screw holes, 1.1.3 articulated joint holding tank, 1.1.4 first groove surface, 1.1.5 second groove surface, 1.1.6 first pin shaft hole, 1.1.7 fixing base top, 1.1.8 second pin shaft hole, 1.2 round pin axle, 2 first web, 3 second web, 4 pitch bearing, 5 connecting bolt, 6 wheel hub, 7 blade, 8 bearing structure, 9 executor, 9.1 articulated joint, 10 inner skleeve, 11 outer sleeve, 12 supporting cushion block, 13 baffle sleeve, 13.1 outside sleeve, 13.2 baffle, 14 little sleeve.
Detailed Description
The invention is further illustrated below with reference to examples.
Example 1
Figures 1-6 illustrate an embodiment of the present invention. The invention discloses a variable-pitch bearing 4 assembly, which comprises a fixed seat assembly 1, a first web plate 2, a second web plate 3 and a variable-pitch bearing 4, wherein an outer ring of the variable-pitch bearing 4 is fixed on a hub 6, an inner ring of the variable-pitch bearing 4 is connected with a blade 7, and the hub 6 and the blade 7 are respectively arranged on two sides of the variable-pitch bearing 4; the first web plate 2 is connected to the hub 6 side of the inner ring of the pitch bearing 4; the second web plate 3 is connected to the blade 7 side of the inner ring of the pitch bearing 4; the fixed seat assembly 1 is used for installing an actuator 9 hinge joint 9.1, the fixed seat assembly 1 is arranged on one side of the rotation axis of the variable-pitch bearing 4, and the bottom surface of the fixed seat assembly 1 is attached to the side of the first web plate 2 hub 6; the fixing seat assembly 1, the first web plate 2 and the second web plate 3 are connected together through a plurality of connecting bolts 5, a supporting structure 8 is arranged around the connecting bolts 5, and a plurality of surfaces which are attached to the blade 7 side of the first web plate 2 and the hub 6 side of the second web plate 3 are arranged on the supporting structure 8.
Further, the fixing base assembly 1 comprises a fixing base 1.1 and a pin shaft 1.2; the bottom surface 1.1.1 of the fixing seat is provided with a plurality of threaded holes 1.1.2; the middle part of the fixed seat 1.1 is provided with a hinge joint accommodating groove 1.1.3; the hinge joint accommodating groove 1.1.3 is internally provided with a first groove surface 1.1.4 and a second groove surface 1.1.5 which are parallel to the bottom surface 1.1.1 of the fixed seat; the first groove surface 1.1.4 is arranged on the side of the hub 6, a first pin shaft hole 1.1.6 is formed in the first groove surface 1.1.4, and the first pin shaft hole 1.1.6 penetrates through the top 1.1.7 of the fixing seat; the second groove surface 1.1.5 is arranged on the blade 7 side, a second pin shaft hole 1.1.8 is formed in the second groove surface 1.1.5, and the first pin shaft hole 1.1.6 is coaxial with the second pin shaft hole 1.1.8; taking the vertical plane of the axis of the first pin shaft hole 1.1.6 as a split surface, splitting the fixed seat 1.1 at the position of the hinge joint accommodating groove 1.1.3, wherein the section shape of the fixed seat 1.1 is C-shaped; one end of the pin shaft 1.2 is arranged in the first pin shaft hole 1.1.6, and the other end of the pin shaft 1.2 is arranged in the second pin shaft hole 1.1.8; the joint 9.1 of the actuator 9 is arranged between the first groove surface 1.1.4 and the second groove surface 1.1.5 of the joint receiving groove 1.1.3 and is articulated to the pin 1.2.
Further, through holes are formed in the positions, corresponding to the threaded holes 1.1.2 in the bottom surface 1.1.1 of the fixing seat, of the first web plate 2 and the second web plate 3, and the connecting bolts 5 sequentially penetrate through the through holes in the second web plate 3 and the first web plate 2 and are screwed into the threaded holes 1.1.2 in the fixing seat 1.1.
Further, the supporting structure 8 comprises an inner sleeve 10 and an outer sleeve 11, the inner sleeve 10 and the outer sleeve 11 are cylindrical structural members with two open ends, the inner sleeve 10 is contained in the outer sleeve 11, an annular gap is formed between the inner sleeve 10 and the outer sleeve 11, the connecting bolts 5 are distributed in the annular gap, one ends of the inner sleeve 10 and the outer sleeve 11 are attached to the blade 7 side of the first web 2, and the other ends of the inner sleeve 10 and the outer sleeve 11 are attached to the hub 6 side of the second web 3.
Example two
Figures 1, 2, 3, 4, 5, 7 are one embodiment of the present invention. The invention discloses a variable-pitch bearing 4 assembly, which comprises a fixed seat assembly 1, a first web plate 2, a second web plate 3 and a variable-pitch bearing 4, wherein an outer ring of the variable-pitch bearing 4 is fixed on a hub 6, an inner ring of the variable-pitch bearing 4 is connected with a blade 7, and the hub 6 and the blade 7 are respectively arranged on two sides of the variable-pitch bearing 4; the first web plate 2 is connected to the hub 6 side of the inner ring of the pitch bearing 4; the second web plate 3 is connected to the blade 7 side of the inner ring of the pitch bearing 4; the fixed seat assembly 1 is used for installing an actuator 9 hinge joint 9.1, the fixed seat assembly 1 is arranged on one side of the rotation axis of the variable-pitch bearing 4, and the bottom surface of the fixed seat assembly 1 is attached to the side of the first web plate 2 hub 6; the fixing seat assembly 1, the first web plate 2 and the second web plate 3 are connected together through a plurality of connecting bolts 5, a supporting structure 8 is arranged around the connecting bolts 5, and a plurality of surfaces which are attached to the blade 7 side of the first web plate 2 and the hub 6 side of the second web plate 3 are arranged on the supporting structure 8.
Further, the fixing base assembly 1 comprises a fixing base 1.1 and a pin shaft 1.2; the bottom surface 1.1.1 of the fixing seat is provided with a plurality of threaded holes 1.1.2; the middle part of the fixed seat 1.1 is provided with a hinge joint accommodating groove 1.1.3; the hinge joint accommodating groove 1.1.3 is internally provided with a first groove surface 1.1.4 and a second groove surface 1.1.5 which are parallel to the bottom surface 1.1.1 of the fixed seat; the first groove surface 1.1.4 is arranged on the side of the hub 6, a first pin shaft hole 1.1.6 is formed in the first groove surface 1.1.4, and the first pin shaft hole 1.1.6 penetrates through the top 1.1.7 of the fixing seat; the second groove surface 1.1.5 is arranged on the blade 7 side, a second pin shaft hole 1.1.8 is formed in the second groove surface 1.1.5, and the first pin shaft hole 1.1.6 is coaxial with the second pin shaft hole 1.1.8; taking the vertical plane of the axis of the first pin shaft hole 1.1.6 as a split surface, splitting the fixed seat 1.1 at the position of the hinge joint accommodating groove 1.1.3, wherein the section shape of the fixed seat 1.1 is C-shaped; one end of the pin shaft 1.2 is arranged in the first pin shaft hole 1.1.6, and the other end of the pin shaft 1.2 is arranged in the second pin shaft hole 1.1.8; the joint 9.1 of the actuator 9 is arranged between the first groove surface 1.1.4 and the second groove surface 1.1.5 of the joint receiving groove 1.1.3 and is articulated to the pin 1.2.
Further, through holes are formed in the positions, corresponding to the threaded holes 1.1.2 in the bottom surface 1.1.1 of the fixing seat, of the first web plate 2 and the second web plate 3, and the connecting bolts 5 sequentially penetrate through the through holes in the second web plate 3 and the first web plate 2 and are screwed into the threaded holes 1.1.2 in the fixing seat 1.1.
Further, the supporting structure 8 comprises a supporting cushion block 12, a plurality of through holes are formed in the supporting cushion block 12 along the height direction of the supporting cushion block 12, the connecting bolts 5 penetrate through the through holes, one end of the supporting cushion block 12 is attached to the blade 7 side of the first web plate 2, and the other end of the supporting cushion block 12 is attached to the hub 6 side of the second web plate 3.
Example III
Figures 1, 2, 3, 4, 5, 8 are one embodiment of the present invention. The invention discloses a variable-pitch bearing 4 assembly, which comprises a fixed seat assembly 1, a first web plate 2, a second web plate 3 and a variable-pitch bearing 4, wherein an outer ring of the variable-pitch bearing 4 is fixed on a hub 6, an inner ring of the variable-pitch bearing 4 is connected with a blade 7, and the hub 6 and the blade 7 are respectively arranged on two sides of the variable-pitch bearing 4; the first web plate 2 is connected to the hub 6 side of the inner ring of the pitch bearing 4; the second web plate 3 is connected to the blade 7 side of the inner ring of the pitch bearing 4; the fixed seat assembly 1 is used for installing an actuator 9 hinge joint 9.1, the fixed seat assembly 1 is arranged on one side of the rotation axis of the variable-pitch bearing 4, and the bottom surface of the fixed seat assembly 1 is attached to the side of the first web plate 2 hub 6; the fixing seat assembly 1, the first web plate 2 and the second web plate 3 are connected together through a plurality of connecting bolts 5, a supporting structure 8 is arranged around the connecting bolts 5, and a plurality of surfaces which are attached to the blade 7 side of the first web plate 2 and the hub 6 side of the second web plate 3 are arranged on the supporting structure 8.
Further, the fixing base assembly 1 comprises a fixing base 1.1 and a pin shaft 1.2; the bottom surface 1.1.1 of the fixing seat is provided with a plurality of threaded holes 1.1.2; the middle part of the fixed seat 1.1 is provided with a hinge joint accommodating groove 1.1.3; the hinge joint accommodating groove 1.1.3 is internally provided with a first groove surface 1.1.4 and a second groove surface 1.1.5 which are parallel to the bottom surface 1.1.1 of the fixed seat; the first groove surface 1.1.4 is arranged on the side of the hub 6, a first pin shaft hole 1.1.6 is formed in the first groove surface 1.1.4, and the first pin shaft hole 1.1.6 penetrates through the top 1.1.7 of the fixing seat; the second groove surface 1.1.5 is arranged on the blade 7 side, a second pin shaft hole 1.1.8 is formed in the second groove surface 1.1.5, and the first pin shaft hole 1.1.6 is coaxial with the second pin shaft hole 1.1.8; taking the vertical plane of the axis of the first pin shaft hole 1.1.6 as a split surface, splitting the fixed seat 1.1 at the position of the hinge joint accommodating groove 1.1.3, wherein the section shape of the fixed seat 1.1 is C-shaped; one end of the pin shaft 1.2 is arranged in the first pin shaft hole 1.1.6, and the other end of the pin shaft 1.2 is arranged in the second pin shaft hole 1.1.8; the joint 9.1 of the actuator 9 is arranged between the first groove surface 1.1.4 and the second groove surface 1.1.5 of the joint receiving groove 1.1.3 and is articulated to the pin 1.2.
Further, through holes are formed in the positions, corresponding to the threaded holes 1.1.2 in the bottom surface 1.1.1 of the fixing seat, of the first web plate 2 and the second web plate 3, and the connecting bolts 5 sequentially penetrate through the through holes in the second web plate 3 and the first web plate 2 and are screwed into the threaded holes 1.1.2 in the fixing seat 1.1.
Further, the supporting structure 8 comprises a partition plate 13.2 sleeve 13, the partition plate 13.2 sleeve 13 is composed of an outer sleeve 13.1 and a partition plate 13.2, the outer sleeve 13.1 is a cylindrical structural member with two open ends, the partition plate 13.2 extending to the two ends of the outer sleeve 13.1 in length is arranged in the outer sleeve 13.1, the partition plate 13.2 isolates the outer sleeve 13.1 from a plurality of through holes, connecting bolts 5 penetrate through the through holes, one end of the partition plate 13.2 sleeve 13 is attached to the blade 7 side of the first web 2, and the other end of the partition plate 13.2 sleeve 13 is attached to the hub 6 side of the second web 3.
Example IV
Figures 1, 2, 3, 4, 5, 9 are one embodiment of the present invention. The invention discloses a variable-pitch bearing 4 assembly, which comprises a fixed seat assembly 1, a first web plate 2, a second web plate 3 and a variable-pitch bearing 4, wherein an outer ring of the variable-pitch bearing 4 is fixed on a hub 6, an inner ring of the variable-pitch bearing 4 is connected with a blade 7, and the hub 6 and the blade 7 are respectively arranged on two sides of the variable-pitch bearing 4; the first web plate 2 is connected to the hub 6 side of the inner ring of the pitch bearing 4; the second web plate 3 is connected to the blade 7 side of the inner ring of the pitch bearing 4; the fixed seat assembly 1 is used for installing an actuator 9 hinge joint 9.1, the fixed seat assembly 1 is arranged on one side of the rotation axis of the variable-pitch bearing 4, and the bottom surface of the fixed seat assembly 1 is attached to the side of the first web plate 2 hub 6; the fixing seat assembly 1, the first web plate 2 and the second web plate 3 are connected together through a plurality of connecting bolts 5, a supporting structure 8 is arranged around the connecting bolts 5, and a plurality of surfaces which are attached to the blade 7 side of the first web plate 2 and the hub 6 side of the second web plate 3 are arranged on the supporting structure 8.
Further, the fixing base assembly 1 comprises a fixing base 1.1 and a pin shaft 1.2; the bottom surface 1.1.1 of the fixing seat is provided with a plurality of threaded holes 1.1.2; the middle part of the fixed seat 1.1 is provided with a hinge joint accommodating groove 1.1.3; the hinge joint accommodating groove 1.1.3 is internally provided with a first groove surface 1.1.4 and a second groove surface 1.1.5 which are parallel to the bottom surface 1.1.1 of the fixed seat; the first groove surface 1.1.4 is arranged on the side of the hub 6, a first pin shaft hole 1.1.6 is formed in the first groove surface 1.1.4, and the first pin shaft hole 1.1.6 penetrates through the top 1.1.7 of the fixing seat; the second groove surface 1.1.5 is arranged on the blade 7 side, a second pin shaft hole 1.1.8 is formed in the second groove surface 1.1.5, and the first pin shaft hole 1.1.6 is coaxial with the second pin shaft hole 1.1.8; taking the vertical plane of the axis of the first pin shaft hole 1.1.6 as a split surface, splitting the fixed seat 1.1 at the position of the hinge joint accommodating groove 1.1.3, wherein the section shape of the fixed seat 1.1 is C-shaped; one end of the pin shaft 1.2 is arranged in the first pin shaft hole 1.1.6, and the other end of the pin shaft 1.2 is arranged in the second pin shaft hole 1.1.8; the joint 9.1 of the actuator 9 is arranged between the first groove surface 1.1.4 and the second groove surface 1.1.5 of the joint receiving groove 1.1.3 and is articulated to the pin 1.2.
Further, through holes are formed in the positions, corresponding to the threaded holes 1.1.2 in the bottom surface 1.1.1 of the fixing seat, of the first web plate 2 and the second web plate 3, and the connecting bolts 5 sequentially penetrate through the through holes in the second web plate 3 and the first web plate 2 and are screwed into the threaded holes 1.1.2 in the fixing seat 1.1.
Further, the supporting structure 8 includes a group of small sleeves 14, the small sleeves 14 are cylindrical structural members with two open ends, the inner holes of the small sleeves 14 are larger than the diameters of the connecting bolts 5, each connecting bolt 5 passes through one small sleeve 14, one end of each small sleeve 14 is attached to the blade 7 side of the first web 2, and the other end of each small sleeve 14 is attached to the hub 6 side of the second web 3.
The present invention is not limited to the above embodiments, and any person who makes the technical solution with the same or similar to the present invention in the light of the present invention should be known to fall within the scope of the present invention.
The technology, shape, and construction parts of the present invention, which are not described in detail, are known in the art.
Claims (1)
1. The variable pitch bearing assembly comprises a fixed seat assembly, a first web plate, a second web plate and a variable pitch bearing, and is characterized in that an outer ring of the variable pitch bearing is fixed on a hub, an inner ring of the variable pitch bearing is connected with blades, and the hub and the blades are respectively arranged on two sides of the variable pitch bearing; the first web plate is connected to the hub side of the inner ring of the variable-pitch bearing; the second web is connected to the blade side of the inner ring of the variable-pitch bearing; the fixed seat assembly is used for installing an actuator hinge joint, and is arranged on one side of the rotation axis of the variable-pitch bearing, and the bottom surface of the fixed seat assembly is attached to the hub side of the first web plate; the fixing seat assembly, the first web plate and the second web plate are connected together through a plurality of connecting bolts, a supporting structure is arranged around the connecting bolts, and a plurality of surfaces which are attached to the blade side of the first web plate and the hub side of the second web plate are arranged on the supporting structure;
the fixed seat assembly comprises a fixed seat and a pin shaft; the bottom surface of the fixed seat is provided with a plurality of threaded holes; the middle part of the fixed seat is provided with a hinge joint accommodating groove; the hinge joint accommodating groove is internally provided with a first groove surface and a second groove surface which are parallel to the bottom surface of the fixed seat; the first groove surface is arranged on the hub side, a first pin shaft hole is formed in the first groove surface, and the first pin shaft hole penetrates through the top of the fixing seat; the second groove surface is arranged on the blade side, a second pin shaft hole is formed in the second groove surface, and the first pin shaft hole is coaxial with the second pin shaft hole; taking a vertical plane of the axis of the first pin shaft hole as a split surface, and splitting a fixing seat at the hinge joint accommodating groove, wherein the cross section of the fixing seat is C-shaped; one end of the pin shaft is arranged in the first pin shaft hole, and the other end of the pin shaft is arranged in the second pin shaft hole; the hinge joint of the actuator is arranged between the first groove surface and the second groove surface of the hinge joint accommodating groove and is hinged on the pin shaft;
the first web plate and the second web plate are provided with through holes at positions corresponding to the threaded holes on the bottom surface of the fixing seat, and the connecting bolts sequentially penetrate through the through holes on the second web plate and the first web plate and are screwed into the threaded holes on the fixing seat;
the supporting structure comprises an inner sleeve and an outer sleeve, wherein the inner sleeve and the outer sleeve are cylindrical structural members with openings at two ends, the inner sleeve is contained in the outer sleeve, an annular gap is formed between the inner sleeve and the outer sleeve, connecting bolts are distributed in the annular gap, one ends of the inner sleeve and the outer sleeve are attached to the blade sides of the first web, and the other ends of the inner sleeve and the outer sleeve are attached to the hub sides of the second web;
or the supporting structure comprises a supporting cushion block, a plurality of through holes are formed in the supporting cushion block along the height direction of the supporting cushion block, connecting bolts penetrate through the through holes, one end of the supporting cushion block is attached to the blade side of the first web plate, and the other end of the supporting cushion block is attached to the hub side of the second web plate;
or the supporting structure comprises a baffle sleeve, the baffle sleeve consists of an outer sleeve and a baffle, the outer sleeve is a cylindrical structural member with two open ends, the inside of the outer sleeve is provided with a baffle which extends to the two ends of the outer sleeve in length, the baffle isolates the outer sleeve from a plurality of through holes, connecting bolts penetrate through the through holes, one end of the baffle sleeve is attached to the blade side of the first web, and the other end of the baffle sleeve is attached to the hub side of the second web;
or the supporting structure comprises a group of small sleeves, the small sleeves are cylindrical structural members with two open ends, the inner holes of the small sleeves are larger than the diameters of the connecting bolts, each connecting bolt penetrates through one small sleeve, one end of each small sleeve is attached to the blade side of the first web, and the other end of each small sleeve is attached to the hub side of the second web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710366530.1A CN106930908B (en) | 2017-05-23 | 2017-05-23 | Variable-pitch bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710366530.1A CN106930908B (en) | 2017-05-23 | 2017-05-23 | Variable-pitch bearing assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106930908A CN106930908A (en) | 2017-07-07 |
| CN106930908B true CN106930908B (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710366530.1A Active CN106930908B (en) | 2017-05-23 | 2017-05-23 | Variable-pitch bearing assembly |
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| CN204755199U (en) * | 2015-07-27 | 2015-11-11 | 北京三力新能科技有限公司 | Hydraulic pressure becomes oar bearing assembly |
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| US20150056078A1 (en) * | 2013-08-22 | 2015-02-26 | General Electric Company | Pitch bearing assembly with stiffener |
| EP2933476B1 (en) * | 2014-04-17 | 2017-03-08 | Siemens Aktiengesellschaft | Reinforced pitch bearing of a wind turbine |
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| CN103221685A (en) * | 2010-11-26 | 2013-07-24 | 维斯塔斯风力系统有限公司 | A pitch system for a wind turbine |
| CN202746116U (en) * | 2012-06-25 | 2013-02-20 | 华锐风电科技(集团)股份有限公司 | Impeller |
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| CN106930908A (en) | 2017-07-07 |
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