CN111502923A - Wind power transmission assembly and wind generating set - Google Patents
Wind power transmission assembly and wind generating set Download PDFInfo
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- CN111502923A CN111502923A CN202010342178.XA CN202010342178A CN111502923A CN 111502923 A CN111502923 A CN 111502923A CN 202010342178 A CN202010342178 A CN 202010342178A CN 111502923 A CN111502923 A CN 111502923A
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- power transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 45
- 238000003825 pressing Methods 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 11
- 238000012423 maintenance Methods 0.000 abstract description 12
- 238000010248 power generation Methods 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 16
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- F03D15/00—Transmission of mechanical power
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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
- F03D1/0691—Rotors characterised by their construction elements of the hub
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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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
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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
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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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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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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- 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
- Y02E10/728—Onshore wind turbines
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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)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a wind power transmission assembly and a wind generating set, and relates to the technical field of wind power generation. The wind power transmission assembly comprises a main shaft and a hub; the main shaft and the hub are of an integral structure. The wind generating set comprises blades, a gear box and the wind power transmission assembly, wherein the blades are arranged on a hub, and a main shaft is in transmission connection with a power input end of the gear box. The wind power transmission assembly and the wind generating set provided by the invention solve the technical problems that the connection reliability of the main shaft and the hub is low and regular maintenance is required in the prior art.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a wind power transmission assembly and a wind generating set.
Background
The hub of the wind turbine generator is mainly used for connecting blades of the generator to form a wind wheel, so that wind energy is converted into mechanical energy of rotating moment, and the mechanical energy bears the moment and force load of the blades in all directions. The main shaft of the unit is connected with the hub of the wind wheel, on one hand, the rotating torque of the wind wheel is transmitted to the gear box and then to the generator, so that the mechanical energy is converted into electric energy, and the power generation operation is realized; on the other hand, the main shaft needs to bear the moment and force load in all directions transmitted from the wind wheel, and the reliable operation of the fan is ensured. At present, a main shaft and a hub of a wind turbine generator are usually assembled through two parts needing to be assembled, the main shaft and the hub are fixedly assembled together through bolts, and the main shaft and the hub are positioned through a spigot. However, when the hub and the spindle are assembled, some connecting structures and positioning structures are necessarily specially designed on the hub and the spindle, meanwhile, fasteners such as bolts are also needed, the connection reliability is low, and regular maintenance is needed.
In view of this, a wind power transmission assembly and a wind generating set are urgently needed, and the problems can be solved.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a wind power transmission assembly to solve the technical problems that in the prior art, the connection reliability of a main shaft and a hub is low, and regular maintenance is required.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a wind power transmission assembly, which comprises a main shaft and a hub;
the main shaft and the hub are of an integral structure.
In any of the above technical solutions, further, the main shaft and the hub are integrally formed, welded or glued.
In any one of the above technical solutions, further, the spindle has a first pressing surface, the hub has a second pressing surface, and the first pressing surface can be pressed against the second pressing surface.
In any of the above technical solutions, further, the main shaft and the hub are in smooth transition.
In any one of the above technical solutions, further, one end of the main shaft, which is far away from the hub, is provided with a first mounting portion, and the first mounting portion is used for being in transmission connection with a gear box.
In any of the above technical solutions, further, the main shaft is provided with at least one second mounting portion, and the second mounting portion is used for mounting a bearing;
when the quantity of second installation department is a plurality of, it is a plurality of the second installation department is followed the axis direction interval arrangement of main shaft.
In any one of the above technical solutions, further, the second mounting portion is provided with a shoulder, and the shoulder is used for axially limiting the bearing.
In any of the above technical solutions, further, the hub is provided with at least one mounting opening, and the mounting opening is used for mounting a blade;
the number of the mounting openings is multiple, and the mounting openings are arranged around the circumferential direction of the hub at intervals.
In any one of the above technical solutions, further, a hub web is arranged on the inner side of the mounting opening, a plurality of stretcher through holes are formed in the hub web, the stretcher through holes are arranged around the hub web at intervals in the circumferential direction, and the stretcher through holes are used for mounting bolt stretchers.
In any of the above technical solutions, further, the hub is provided with at least one manhole, and the manhole is used for people to come in and go out of the hub.
In any of the above technical solutions, further, the manhole is disposed at a side of the hub close to the spindle.
A second object of the present invention is to provide a wind park to alleviate at least one of the above technical problems.
The invention provides a wind generating set which comprises blades, a gear box and the wind power transmission assembly, wherein the blades are arranged on a hub, and a main shaft is in transmission connection with a power input end of the gear box.
The invention has the beneficial effects that:
the invention provides a wind power transmission assembly which comprises a main shaft and a hub, wherein the main shaft and the hub are of an integral structure. Compared with the prior art in which the connection between the main shaft and the hub needs to be realized through fasteners such as bolts, the main shaft and the hub in the wind power transmission assembly are of an integral structure, and the wind power transmission assembly does not need to be assembled through connecting pieces such as bolts, nuts and gaskets, i.e., the main shaft and the hub do not need to be provided with a connecting structure and a positioning structure specially used for assembly, so that the structure is simplified, the weight is reduced, and the cost is reduced. In addition, the main shaft and the hub in the wind power transmission assembly do not need to be assembled in a matched mode through fasteners, so that the fasteners do not need to be maintained regularly, the fasteners do not need to be loosened after being used for a long time, and the connection reliability is improved.
The invention provides a wind generating set which comprises blades, a gear box and the wind power transmission assembly, wherein the blades are arranged on a hub, and a main shaft is in transmission connection with a power input end of the gear box, so that at least one technical effect can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a first schematic view of a wind power transmission assembly provided by an embodiment of the present invention;
FIG. 2 is a second schematic view of a wind power transmission assembly provided in an embodiment of the present invention;
FIG. 3 is a first cross-sectional view of a wind power transmission assembly provided by an embodiment of the present invention;
FIG. 4 is a second cross-sectional view of a wind power transmission assembly provided by an embodiment of the present invention;
fig. 5 is a third schematic view of a wind power transmission assembly according to an embodiment of the present invention.
Icon: 10-a main shaft; 11-a first compression surface; 12-a first mounting portion; 13-a second mounting portion; 20-a hub; 21-a second compression surface; 22-a mounting port; 23-a hub web; 131-a shoulder; 24-manhole; 221-a threaded hole; 231-stretcher through hole; 232-web maintenance hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
The hub of the wind turbine generator is mainly used for connecting blades of the generator to form a wind wheel, so that wind energy is converted into mechanical energy of rotating moment, and meanwhile, the hub also bears the moment and force load of the blades in all directions. The main shaft of the unit is connected with the hub of the wind wheel, on one hand, the rotating torque of the wind wheel is transmitted to the gear box and then to the generator, so that the mechanical energy is converted into electric energy, and the power generation operation is realized; on the other hand, the main shaft needs to bear the moment and force load in all directions transmitted from the wind wheel, and the reliable operation of the fan is ensured.
In most of wind turbine generators used at present, a main shaft and a hub are fixedly assembled through fasteners such as bolts, and when loads borne by the main shaft and the hub respectively have deviation, the requirement on the load resistance of the joint of the main shaft and the hub is high. In addition, in order to install the bolts, a special installation structure and a special positioning structure are required to be arranged on the main shaft and the hub, for example, a threaded hole, a flange surface or a positioning spigot is required to be arranged, so that the manufacturing process is complex. In addition, if bolt fixing is adopted, along with the prolonging of the service life of the main shaft and the hub, the bolt connection part can be loosened, and regular maintenance is needed to ensure that the main shaft and the hub are reliably connected.
In view of the above problems, the present embodiment provides a wind power transmission assembly, which is an integral structure formed by the main shaft 10 and the hub 20, so as to solve the above problems that the connection reliability is low and regular maintenance is required.
As shown in fig. 1 to 5, the wind power transmission assembly provided by the present embodiment includes a main shaft 10 and a hub 20; the main shaft 10 is of unitary construction with the hub 20.
Compared with the prior art in which the main shaft 10 and the hub 20 are fixedly matched through bolts, the main shaft 10 and the hub 20 in the wind power transmission assembly are of an integral structure, the load borne by the hub 20 can be directly transmitted to the main shaft 10, the rotating torque generated by the hub 20 is also directly transmitted to the main shaft 10, transition through other parts is not needed in the transmission process, the connection reliability is improved, and the bearing capacity of the main shaft 10 and the hub 20 is improved. Meanwhile, a connecting structure and a positioning structure specially used for assembly are not required to be arranged on the main shaft 10 and the hub 20, so that the processes of manufacturing the main shaft and the hub are reduced, and the manufacturing process is simplified. In addition, since the spindle 10 and the hub 20 in this embodiment do not require a fastener such as a bolt to be assembled, regular maintenance of the fastener is not required, and there is no fear of loosening of the fastener due to long-term use.
Preferably, the transition between the main shaft 10 and the hub 20 is smooth. Specifically, the main shaft 10 and the hub 20 are in uniform and smooth transition, so that sudden change of the cross section is avoided, the force flow of the whole stress is transferred more smoothly, stress concentration is reduced, and the reliability of the transition position between the main shaft 10 and the hub 20 is improved. Wherein, the smooth transition between the main shaft 10 and the hub 20 comprises: the inner wall of the main shaft 10 and the inner wall of the hub 20 are in smooth transition, and the outer wall of the main shaft 10 and the outer wall of the hub 20 are in smooth transition, so that an integral structure is formed.
As shown in fig. 1 to 5, in the present embodiment, the spindle 10 has a first pressing surface 11, the hub 20 has a second pressing surface 21, and the first pressing surface 11 can be pressed against the second pressing surface 21.
Specifically, a first pressing surface 11 is arranged at one end, away from the gear box, of the main shaft 10, and the first pressing surface 11 is in a closed ring shape. At the same time, a second pressing surface 21 is provided on the side of the hub 20 facing the spindle 10, and the second pressing surface 21 is also in the shape of a closed ring. The first pressing surface 11 can be pressed on the second pressing surface 21, and at the joint of the first pressing surface 11 and the second pressing surface 21, the spindle 10 and the hub 20 are in smooth transition, so that an integral structure is formed.
There are various manufacturing methods for the spindle 10 and the hub 20, and the following examples are given:
the first mode is as follows: the main shaft 10 is integrally formed with the hub 20. That is, when the main shaft 10 and the hub 20 are manufactured, the main shaft 10 and the hub 20 are formed by a single piece of material, and the formed main shaft 10 and the hub 20 have no joint gap and are a complete integral structure, i.e. the main shaft 10 and the hub 20 are taken as a single part. Such as by stamping, injection molding, or casting, which may all form the spindle 10 and hub 20 as a unitary structure.
The second mode is as follows: the main shaft 10 and the hub 20 are formed by welding. In practical use, the first pressing surface 11 of the spindle 10 is pressed against the second pressing surface 21 of the hub 20, and then the spindle is circumferentially welded around the joint of the first pressing surface 11 and the second pressing surface 21, so that the spindle 10 and the hub 20 form an integral structure. At this time, the weld between the main shaft 10 and the hub 20 is disposed around the circumferential direction of the main shaft 10. After the welding is accomplished, can also polish the welded area to improve the smoothness, can also carry out anticorrosive treatment through the mode of soaking the material simultaneously, prolong this wind-powered electricity generation transmission assembly's life.
The third mode is as follows: the main shaft 10 and the hub 20 are molded by gluing. Namely, an adhesive is coated on the first pressing surface 11 of the spindle 10, an adhesive is coated on the second pressing surface 21 of the hub 20, then the first pressing surface 11 and the second pressing surface 21 are in press fit, and the spindle 10 and the hub 20 are connected into an integral structure through the adhesive. During pressing, the adhesive is pressed by the pressing force between the spindle 10 and the hub 20 and can be squeezed out from between the first pressing surface 11 and the second pressing surface 21. And after the main shaft 10 is bonded with the hub 20, removing the redundant adhesive.
The main shaft 10 and the hub 20 are made of QT400 material, but the main shaft and the hub are not limited to QT400 material, and may be made of other materials as long as the main shaft 10 and the hub 20 are ensured to form an integral structure.
With continued reference to fig. 1-5, preferably, the end of the main shaft 10 remote from the hub 20 is provided with a first mounting portion 12, and the first mounting portion 12 is used for being in driving connection with a gearbox.
Specifically, the main shaft 10 is configured as a stepped shaft, that is, the main shaft 10 has a large end with a larger diameter and a small end with a smaller diameter, the large end is connected with the hub 20 to form an integral structure, and the small end is used for being in transmission connection with a power input end of the gearbox. Here, the small end is the first mounting portion 12. Meanwhile, the joint of the small end and the large end is in rounded transition.
The main shaft 10 is a hollow shaft, has high flexibility, and is more suitable for transmitting torque.
With continued reference to fig. 1-5, the main shaft 10 is preferably provided with at least one second mounting portion 13, the second mounting portion 13 being for mounting a bearing. That is, the second mounting portion 13 is a smooth closed annular surface extending around the circumference of the main shaft 10, and the inner ring of the bearing can be sleeved on the second mounting portion 13, so that the bearing can be mounted on the main shaft 10.
With continued reference to fig. 1-5, preferably, the number of the second mounting portions 13 is multiple, and the multiple second mounting portions 13 are arranged at intervals along the axial direction of the main shaft 10.
In the present embodiment, the number of the second mounting portions 13 is two, wherein one second mounting portion 13 is disposed at an end close to the hub 20, and the other second mounting portion 13 is disposed at an end close to the gear case. That is, two bearings can be mounted on the main shaft 10, thereby improving the support performance.
With continued reference to fig. 1-5, the second mounting portion 13 is preferably provided with a shoulder 131, the shoulder 131 being used to axially retain the bearing.
In the present embodiment, a shoulder 131 is provided on one of the second mounting portions 13 facing the hub 20, and the shoulder 131 is a raised strip protruding from the annular surface of the second mounting portion 13. When the inner ring of the bearing is sleeved on the annular surface, the inner ring of the bearing can abut against one end surface of the shoulder 131 far away from the hub 20, so that the inner ring is limited along the axial movement of the spindle 10, and the bearing is ensured to be stably mounted on the spindle 10.
In practical use, the middle part of the main shaft 10 is further provided with a shaft sleeve, and one end of the main shaft 10 facing the gear box is provided with a bearing cover. With the second mounting portion 13 near the hub 20 as the left mounting portion and the second mounting portion 13 near the gear box as the right mounting portion, the bearing mounted on the left mounting portion is the first bearing and the bearing mounted on the right mounting portion is the second bearing. The inner ring of the first bearing is axially limited through a shoulder 131, and the outer ring of the first bearing is axially limited through a shaft sleeve; the inner ring of the second bearing is axially limited through the shaft sleeve, and the outer ring of the second bearing is axially limited through the bearing cover.
Of course, the present invention is not limited to the above-described arrangement, and may be any arrangement as long as torque can be stably transmitted to the main shaft 10.
When the number of the second installation parts 13 is one, the second installation parts are used for a semi-direct-drive wind generating set or a wind generating set, and can also be used for a double-fed set or a direct-drive set. When the number of the second installation parts 13 is two, the second installation parts are used for direct-drive or semi-direct-drive or double-feed wind generating sets or wind generating sets.
With continued reference to fig. 1, 2 and 5, it is preferred that the hub 20 be provided with at least one mounting opening 22, the mounting opening 22 being for mounting a blade. The mounting opening 22 is provided with a plurality of threaded holes 221 uniformly distributed at intervals in the circumferential direction around the mounting opening 22, the threaded holes 221 are used for being mounted and fixed with an outer ring of a variable pitch bearing, so that the blades are fixedly mounted relative to the mounting opening 22 through the variable pitch bearing, the blades can drive the hub 20 to rotate when rotating, and the main shaft 10 rotates along with the hub 20 at the same rotating speed.
With continued reference to fig. 1-5, preferably, the number of mounting ports 22 is multiple, and the multiple mounting ports 22 are spaced around the circumference of the hub 20.
In the present embodiment, the number of the mounting ports 22 is three, and one blade is mounted to one mounting port 22, so that three blades can be mounted in total. Of course, the number of the mounting openings 22 is not limited to three, and may be one or two.
Wherein, when the number of the mounting openings 22 is one, the mounting openings are single-blade wind generating sets or wind generating sets. When the number of the mounting openings 22 is two, the mounting openings are double-blade wind turbines or wind turbine generators. When the number of the mounting openings 22 is three, the mounting openings are three-blade wind generating sets or wind generating sets.
With continued reference to fig. 1-5, preferably, the inner side of the mounting opening 22 is provided with a hub web 23, the hub web 23 is provided with a plurality of tensioner through holes 231, the plurality of tensioner through holes 231 are arranged at intervals around the circumference of the hub web 23, and the tensioner through holes 231 are used for mounting the bolt tensioner.
Specifically, the hub web 23 is a closed annular surface structure, and the hub 20 and the blade are installed to be strengthened by the hub web 23, so that the reliability of the joint of the hub 20 and the blade is improved. A plurality of tensioners are arranged at intervals around the circumference of the hub web 23 by holes 231. The stretcher passing holes 231 are kidney-shaped holes, and the number of the stretcher passing holes 231 is eleven. Meanwhile, a web maintenance hole 232 is further provided on the hub web 23 for performing structural maintenance on the hub web 23 to ensure that the hub web 23 has sufficient strength to enhance the installation of the blade.
With continued reference to fig. 1-5, it is preferred that the hub 20 be provided with at least one manhole 24, the manhole 24 being used for ingress and egress of personnel into and out of the hub. Specifically, when maintenance operations are required on the hub 20 or installation and maintenance operations of components within the hub 20 are required, an operator can gain access to the interior of the hub 20 through the manhole 24. After the maintenance and installation operations are completed, the operator exits the manhole 24. In this embodiment, the number of manholes 24 is three, and three manholes 24 are arranged at intervals of 120 degrees, so as to ensure that there are always suitable manholes 24 at different postures of the hub 20, so that an operator can conveniently get in and out of the hub 20.
As shown in fig. 1, in the present embodiment, the manhole 24 is provided on the hub 20 at a side close to the spindle 10, which is more convenient for an operator to enter and exit.
The embodiment also provides a wind generating set, which comprises blades, a gear box and the wind power transmission assembly, wherein the blades are arranged on the hub 20, and the main shaft 10 is in transmission connection with the power input end of the gear box.
Specifically, the blades rotate under the action of wind force, and further drive the hub 20 to rotate, and the main shaft 10 rotates synchronously with the hub 20. The rotation of the main shaft 10 can transmit torque to a power input end of the gearbox, and the torque is transmitted to the generator through the gearbox, and the generator generates electricity.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A wind power transmission assembly, characterized by comprising a main shaft (10) and a hub (20);
the main shaft (10) and the hub (20) are of an integral structure.
2. Wind power transmission assembly according to claim 1, characterized in that the main shaft (10) and the hub (20) are integrally formed, welded or glued.
3. A wind power transmission assembly according to claim 2, characterized in that the main shaft (10) has a first pressing surface (11) and the hub (20) has a second pressing surface (21), the first pressing surface (11) being pressable against the second pressing surface (21).
4. Wind power transmission assembly according to claim 1, characterized in that the transition between the main shaft (10) and the hub (20) is smooth.
5. The wind power transmission assembly according to claim 1, characterized in that one end of the main shaft (10) away from the hub (20) is provided with a first mounting portion (12), and the first mounting portion (12) is used for being in transmission connection with a gear box.
6. Wind power transmission assembly according to claim 1 or 5, characterized in that the main shaft (10) is provided with at least one second mounting portion (13), the second mounting portion (13) being used for mounting a bearing;
when the number of the second installation parts (13) is multiple, the second installation parts (13) are arranged at intervals along the axial direction of the main shaft (10).
7. Wind power transmission assembly according to claim 1, characterized in that the hub (20) is provided with at least one mounting opening (22), the mounting opening (22) being used for mounting a blade;
when the number of the mounting openings (22) is multiple, the multiple mounting openings (22) are arranged around the circumference of the hub (20) at intervals.
8. The wind power transmission assembly according to claim 7, characterized in that a hub web (23) is arranged on the inner side of the mounting opening (22), a plurality of stretcher through holes (231) are arranged on the hub web (23), the plurality of stretcher through holes (231) are arranged at intervals around the circumference of the hub web (23), and the stretcher through holes (231) are used for mounting bolt stretchers.
9. The wind power transmission assembly of claim 1 wherein the hub is provided with at least one manhole for ingress and egress of personnel to and from the hub.
10. The wind power transmission assembly of claim 9, wherein the manhole is provided on a side of the hub near the main shaft.
11. A wind power plant comprising a blade, a gearbox and a wind power transmission assembly according to any of claims 1 to 10, said blade being mounted to said hub (20) and said main shaft (10) being drivingly connected to a power input of said gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342178.XA CN111502923A (en) | 2020-04-27 | 2020-04-27 | Wind power transmission assembly and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342178.XA CN111502923A (en) | 2020-04-27 | 2020-04-27 | Wind power transmission assembly and wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111502923A true CN111502923A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010342178.XA Pending CN111502923A (en) | 2020-04-27 | 2020-04-27 | Wind power transmission assembly and wind generating set |
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| CN (1) | CN111502923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113803216A (en) * | 2021-10-28 | 2021-12-17 | 中国船舶重工集团海装风电股份有限公司 | Wind generating set |
| CN114382664A (en) * | 2021-12-20 | 2022-04-22 | 山东中车风电有限公司 | Wind generating set casting main shaft |
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| CN114382664A (en) * | 2021-12-20 | 2022-04-22 | 山东中车风电有限公司 | Wind generating set casting main shaft |
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