A positioning mechanism of a wind turbine generator system

Abstract

The application discloses a positioning mechanism of a wind generating set, a hub is rotatably arranged on a machine head, blades are fixed on the hub, a main shaft in the machine head is fixedly connected with the hub, a positioning disc is fixed on the main shaft, a lifting assembly is arranged in the machine head, a positioning plate and a positioning wheel are respectively arranged between the lifting assembly and the positioning disc, the main shaft is located between the two positioning wheels, the positioning wheel can roll along the positioning plate, when the blades are positioned, the two positioning wheels are attached to one side of the positioning plate, the machine head is rotatably arranged on the upper end of a supporting rod, a roller and a positioning track are arranged between the machine head and the supporting rod, the roller rolls between the low point position and the high point position of the positioning track, and the roller or the positioning track moves up and down along the supporting rod. Compared with the prior art, the application has the advantages of simple structure, ingenious design, positioning of the machine head and the blades in any position, and determined position of the machine head and the blades after positioning. The blades do not need to be positioned through friction, and damage does not occur in the positioning process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy utilization, in particular to a positioning mechanism of a wind turbine generator. BACKGROUND

[0002] Wind energy and solar energy are inexhaustible, renewable and clean energy. Wind energy and solar energy have the advantages of renewable energy, low power generation cost and no pollution. Wind energy and solar energy are greatly affected by nature. Therefore, in the process of using wind energy, photovoltaic panels are usually used together. When there is sunlight, photovoltaic panels are used to generate electricity. When there is no sunlight and there is wind, wind energy is used to generate electricity. In this way, the advantages of each can be brought into play, and the defects of each can be avoided. Land resources can be saved, natural resources can be fully utilized, power generation efficiency can be improved, and more power can be generated. When wind power generation and solar power generation are combined, the blades of the wind turbine are located above the photovoltaic panels. However, this structure is prone to hot spot effect (under certain conditions, a shaded solar cell component in a series branch will be consumed as a load by the energy generated by other solar cell components with light. The shaded solar cell component will heat up at this time, which is the hot spot effect). Therefore, the common practice is to lower the nose of the wind turbine below the photovoltaic panels when the wind turbine is not generating electricity. The nose is adjusted to a position and hidden between the photovoltaic panels. The blades are adjusted to a horizontal distribution and do not affect the power generation of the photovoltaic panels. When the wind turbine generates electricity, the blades are raised above the photovoltaic panels. Therefore, the nose and the blades need to be positioned during the lowering process to avoid interference between the tail wing and the blades and the photovoltaic panels and to reduce the lowering distance of the nose. In the existing positioning method, the blades need to be positioned by rubbing against other components, which may cause damage to the blades. SUMMARY

[0003] The present application provides a positioning mechanism of a wind turbine generator to solve the technical problem that the blades may be damaged during positioning in the prior art.

[0004] The present application provides a positioning mechanism of a wind turbine generator, comprising a nose, a hub rotatably arranged on the nose, a blade fixed on the hub, a main shaft fixedly connected with the hub in the nose, a positioning disc fixed on the main shaft, a lifting assembly arranged in the nose, a positioning plate and a positioning wheel arranged between the lifting assembly and the positioning disc, respectively, the main shaft being located between the two positioning wheels, the positioning wheels being able to roll along the positioning plate, the two positioning wheels being in contact with one side of the positioning plate when the blade is positioned, the nose being rotatably arranged on the upper end of a support rod, a roller and a positioning track being arranged between the nose and the support rod, the roller rolling between the low point position and the high point position of the positioning track, the roller or the positioning track moving up and down along the support rod.

[0005] Preferably, the two positioning wheels and the main shaft are in a straight line.

[0006] Preferably, the upper end of the positioning plate is provided with two inclined surfaces, and the higher ends of the two inclined surfaces are connected.

[0007] Preferably, the lower end of the machine head is fixed with a cylinder, the positioning track is arranged at the bottom of the cylinder, the support rod is fixed with a driving member for driving the lifting of the roller, and the upper end of the driving member is rotationally connected with the roller.

[0008] Preferably, the positioning track is a spiral track.

[0009] Preferably, the positioning track comprises two guide rails, and the higher ends of the two guide rails are connected, and the lower ends of the two guide rails are connected.

[0010] Preferably, the lifting assembly and the driving member are both electric push rods.

[0011] Preferably, the support rod is fixed with a support seat, and the support seat is slidingly connected with the push rod of the electric push rod on the support rod.

[0012] Preferably, the blades are two, and the blades are in a straight line with the positioning wheels.

[0013] Preferably, the machine head is provided with a tail fin away from the blades.

[0014] Compared with the prior art, when the wind turbine generator set is not working, the driving member pushes the roller to rise before the machine head is lowered, the roller rolls along the positioning track in the rising process, so as to drive the machine head to rotate around the support rod, and when the roller reaches the high point of the positioning track, the rising and rolling are stopped, so as to realize the positioning of the machine head, so as to store the machine head between the two photovoltaic panels. The lifting assembly pushes the positioning plate to rise, the positioning plate pushes the positioning wheel to rotate around the main shaft in the rising process, the positioning wheel rotates around the main shaft while rolling along the positioning plate, when the two positioning wheels are in abutment with the positioning plate, the positioning of the blades is realized, for example, the blades are positioned in a horizontal distribution, so as to reduce the height of the blades and avoid blocking the photovoltaic panel from generating electricity. The present application has the advantages of simple structure, ingenious design, positioning of the machine head and the blades in any position, and fixed position after positioning. The blades do not need to be positioned by friction, and damage will not occur in the positioning process. Thirdly, the cooperation of the positioning wheel and the positioning plate and the cooperation of the roller and the positioning track make the fixing effect of the blades and the machine head of the present application good. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 Structure diagram of the present application;

[0017] Figure 2 Structure diagram of part of the present application;

[0018] Figure 3 Front view of Figure 2

[0019] Structure diagram of cooperation between positioning wheel and positioning plate of the present application; Figure 4

[0020] Another structure diagram of cooperation between positioning wheel and positioning plate of the present application; Figure 5

[0021] Structure diagram of positioning track of the present application; Figure 6

[0022] Enlarged diagram of structure at A in Figure 7 Figure 1

[0023] Figure 8 Actual photograph of blade positioning.

[0024] Reference signs:

[0025] 1. Head, 2. Hub, 3. Blade, 4. Main shaft, 5. Positioning disc, 6. Lifting assembly, 7. Positioning plate, 8. Positioning wheel, 9. Support rod, 10. Roller, 11. Positioning track, 12. Cylinder, 13. Driving member, 14. Support seat, 100. Inclined surface, 200. Positioning groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Reference is made to the drawings Figures 1-3 ​​A positioning mechanism for a wind turbine generator set includes a turbine head 1, a hub 2 rotatably mounted on the turbine head 1, blades 3 fixed on the hub 2, a main shaft 4 fixedly connected to the hub 2 inside the turbine head 1, the main shaft 4 being connected to a generator, a positioning disk 5 fixed on the main shaft 4, a lifting assembly 6 inside the turbine head 1, a positioning plate 7 and a positioning wheel 8 respectively positioned between the lifting assembly 6 and the positioning disk 5, the main shaft 4 being located between the two positioning wheels 8, the lifting assembly 6 pushing the positioning plate 7 closer to the positioning wheel 8, and the positioning wheel 8 rolling along the positioning plate 7 regardless of the angle to which the positioning disk 5 rotates. Specifically, after the positioning plate 7 contacts one of the positioning wheels 8, the positioning disk 5 is rotated by this positioning wheel 8. (See attached diagram) Figure 4 and attached Figure 5 When the two positioning wheels 8 are in contact with one side of the positioning plate 7, the positioning plate 7 restricts the rotation of the positioning disk 5 through the two positioning wheels 8, thus completing the positioning of the blade 3. The machine head 1 is rotatably mounted on the upper end of the support rod 9. A roller 10 and a positioning rail 11 are provided between the machine head 1 and the support rod 9. The roller 10 rolls between the low point and the high point of the positioning rail 11. The roller 10 or the positioning rail 11 moves up and down along the support rod 9. The roller 10 and the positioning rail 11 approach each other and contact the positioning rail 11. When the roller 10 and the positioning rail 11 continue to move towards each other, the roller 10 rolls along the positioning rail 11, driving the positioning rail 11 to rotate around the support rod 9. When the roller 10 rolls to the low point or the high point of the positioning rail 11, the roller 10 stops rolling, and the positioning rail 11 stops rotating, thus completing the positioning of the machine head 1. This structural design ensures that regardless of its initial position before positioning, the blade 3 will be fixed in its predetermined position after being positioned by the positioning wheel 8 and positioning disc 5; that is, the position of the blade 3 is fixed after positioning. Secondly, this positioning method eliminates the need for friction between the blade 3 and other components, preventing damage to the blade 3. This is especially important for the very heavy blades of large wind turbines; if friction were used for positioning, a very large frictional force would be required to rotate the blade 3, which could easily lead to damage. Thirdly, this structural design ensures that regardless of the initial position of the turbine head 1 before positioning, it will be fixed in its predetermined position after being positioned by the roller 10 and positioning track 11; that is, the position of the turbine head 1 is fixed after positioning.

[0028] As another embodiment of the present invention: refer to the appendix Figure 4, two positioning wheels 8 and the main shaft 4 are in a straight line. The lifting assembly 6 drives the positioning plate 7 to move towards the main shaft 4, the positioning plate 7 contacts one positioning wheel 8 on the positioning disc 5, then the positioning wheel 8 pushes the positioning disc 5 to rotate, until the positioning plate 7 contacts two positioning wheels 8, the positioning of the blade 3 is completed. When the positioning wheel 8 pushes the positioning disc 5 to rotate, the positioning wheel 8 rolls along the positioning plate 7. When the lifting assembly 6 drives the positioning plate 7 to move towards the main shaft 4, the positioning plate 7 contacts two positioning wheels 8 on the positioning disc 5, in this case, the blade 3 is in the predetermined position before positioning.

[0029] As another embodiment of the present application: refer to the attached Figure 2 and the attached Figure 4 , the upper end of the positioning plate 7 is provided with two inclined surfaces 100, the higher end of the two inclined surfaces 100 is connected, the diameter of the positioning wheel 8 is greater than the diameter of the main shaft 4, the inclined surface 100 is arranged to facilitate the rotation of the positioning wheel 8 around the main shaft 4.

[0030] As another embodiment of the present application: the lower end of the head 1 is fixed with a cylinder 12, the positioning track 11 is arranged at the bottom of the cylinder 12, the driving member 13 is fixed on the support rod 9 to drive the lifting of the driving roller 10, the upper end of the driving member 13 is rotatably connected with the roller 10. The driving member 13 drives the roller 10 to rise, the roller 10 contacts the positioning track 11, then the roller 10 rolls upwards along the positioning track 11, drives the positioning track 11 to rotate around the support rod 9, when the roller 10 rolls to the high point of the positioning track 11, the roller 10 cannot continue to roll upwards, the positioning track 11 stops rotating, the positioning of the head 1 is completed. Of course, the cylinder 12 can also be fixed on the driving member 13, the roller 10 is rotatably arranged at the lower end of the head 1, when the driving member 13 drives the positioning track 11 to rise, the roller 10 rotates around the support rod 9 by rolling on the positioning track 11, that is, drives the head 1 to rotate around the support rod 9, when the roller 10 rolls to the low point of the positioning track 11, the positioning of the head 1 is completed.

[0031] An embodiment of the positioning track 11: refer to the attached Figure 7 , the positioning track 11 is a spiral track, the spiral track is provided with a positioning groove 200 at the high point, when the roller 10 rolls to the high point, the roller 10 is limited in the positioning groove 200 and cannot continue to roll upwards along the positioning track 11.

[0032] Another embodiment of the positioning track 11: refer to the attached Figure 6The positioning track 11 comprises two guide rails, the higher ends of the two guide rails are connected, and the lower ends of the two guide rails are connected. The roller 10 rises, the roller 10 is in contact with one guide rail, and then the roller 10 rolls upwards along the guide rail, drives the cylinder 12 to rotate around the support rod 9, when the roller 10 rolls to the high point of the guide rail, the roller 10 cannot continue to roll upwards, and the positioning of the machine head 1 is completed. Similarly, the roller 10 can also complete the positioning of the machine head 1 through the other guide rail, when the roller 10 rolls upwards along the other guide rail, the cylinder 12 rotates in the opposite direction around the support rod 9.

[0033] As another embodiment of the application: the lifting assembly 6 and the driving member 13 are both electric push rods, specifically, the electric push rod in the machine head 1 is located below the main shaft 4.

[0034] As another embodiment of the application: the support rod 9 is fixed with a support seat 14, the support seat 14 is in sliding connection with the push rod of the electric push rod on the support rod 9, when the machine head 1 is positioned, the support seat 14 can limit the horizontal movement of the push rod, thereby ensuring the positioning effect of the push rod.

[0035] As another embodiment of the application: the blade 3 is two, the two blades 3 are distributed in a straight line with the positioning wheel 8, when the two positioning wheels 8 are in abutment with the positioning plate 7, the two positioning wheels 8 are horizontally distributed, and the two blades 3 are horizontally distributed.

[0036] Specifically, the tail wing is arranged at the end of the machine head 1 away from the blade 3, when there is wind, the tail wing can adjust the wind-attack angle of the blade 3 according to the wind direction, thereby ensuring that the power generation of the wind power generator is maximized.

[0037] Specifically, the lower end of the support rod 9 is provided with a lifting rod, so as to make the machine head 1 rise and fall.

[0038] When the wind turbine set of the present application is not working, the driving member 13 pushes the roller 10 to go up before the nacelle 1 is lowered, the roller 10 rolls along the positioning track 11 in the process of going up, thus driving the nacelle 1 to rotate around the support pole 9, and the roller 10 stops going up and rolling when it reaches the high point of the positioning track 11, thus realizing the positioning of the nacelle 1, which is convenient for hiding the nacelle 1 between two photovoltaic panels. The lifting assembly 6 pushes the positioning plate 7 to go up, the positioning plate 7 pushes the positioning wheel 8 to rotate around the main shaft 4 in the process of going up, the positioning wheel 8 rolls along the positioning plate 7 while rotating around the main shaft 4, and the positioning of the blade 3 is realized when the two positioning wheels 8 are in abutment with the positioning plate 7, for example, the horizontal distribution of the blade 3, thus reducing the height of the blade 3, avoiding the shading of the photovoltaic panel, and reducing the lowering distance of the nacelle. The present application has simple structure and ingenious design, the nacelle 1 and the blade 3 can be positioned no matter what position they are in, and their positions are determined after positioning. The blade 3 does not need to realize the positioning through friction, and there is no damage in the process of positioning. Thirdly, the cooperation of the positioning wheel 8 and the positioning plate 7, and the cooperation of the roller 10 and the positioning track 11 make the fixing effect of the blade 3 and the nacelle 1 of the present application good.

[0039] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A positioning mechanism for a wind turbine generator set, characterized in that, The device includes a machine head, on which a hub is rotatably mounted. Blades are fixed to the hub. A main shaft inside the machine head is fixedly connected to the hub. A positioning disc is fixed to the main shaft. A lifting assembly is located inside the machine head. A positioning plate and a positioning wheel are respectively positioned between the lifting assembly and the positioning disc. The main shaft is located between the two positioning wheels. The positioning plate is fixed to the lifting assembly. The positioning wheels are rotatably mounted on the positioning disc. The lifting assembly pushes the positioning plate closer to the positioning wheels. After the positioning plate contacts the positioning wheels, the positioning wheels can roll along the positioning plate. During blade positioning, the two positioning wheels are in contact with the same side of the positioning plate. The machine head is rotatably mounted on the upper end of the support rod. A roller and a positioning track are provided between the machine head and the support rod. The roller rolls between the low point and the high point of the positioning track. A cylinder is fixed to the lower end of the machine head. The positioning track is located at the bottom of the cylinder. A drive component for driving the roller to rise and fall is fixed on the support rod. The upper end of the drive component is rotatably connected to the roller. The roller moves up and down along the support rod. The two positioning wheels and the main shaft are arranged in a straight line.

2. The positioning mechanism for a wind turbine generator set according to claim 1, characterized in that, The upper end of the positioning plate is provided with two inclined surfaces, and the higher ends of the two inclined surfaces are connected together.

3. The positioning mechanism for a wind turbine generator set according to claim 2, characterized in that, The positioning track is a spiral track.

4. The positioning mechanism for a wind turbine generator set according to claim 3, characterized in that, The positioning track includes two guide rails, with the higher ends of the two guide rails connected together and the lower ends of the two guide rails connected together.

5. The positioning mechanism for a wind turbine generator set according to claim 4, characterized in that, Both the lifting assembly and the driving component are electric push rods.

6. The positioning mechanism for a wind turbine generator set according to claim 5, characterized in that, A support base is fixed on the support rod, and the support base is slidably connected to the push rod of the electric push rod on the support rod.

7. The positioning mechanism for a wind turbine generator set according to claim 2, characterized in that, There are two blades, and the blades are arranged in a straight line with the positioning wheel.

8. The positioning mechanism for a wind turbine generator set according to claim 1, characterized in that, The nose section away from the blades is equipped with a tail fin.

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