A fan hub reinforcement structure

Abstract

The utility model discloses a fan wheel hub reinforcing structure relates to fan wheel hub technical field, including fan wheel hub, the outer surface of fan wheel hub is equipped with three groups of fan blade installation port, and three groups fan blade installation port are annular and equidistance distribution, the inside of fan wheel hub is equipped with with three groups fan blade installation port annular array axle coaxial arrangement's main shaft connecting port, three groups fan blade installation port outer surface all are equipped with reinforcing ring, still include the installation port association reinforcing assembly of sliding installation in three groups fan blade installation port outer surface, the utility model discloses a fan wheel hub, fan blade installation port, main shaft connecting port, reinforcing ring and installation port association reinforcing assembly are set up, solved the problem that traditional fan wheel hub fan blade installation port independent setting easy to appear stress concentration, type change too big and fatigue damage, reached the effect of the advantage that can flexible adjustment reinforcing position, strengthen adjacent fan blade installation port association intensity and disperse local stress.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine hub technology, specifically a wind turbine hub reinforcement structure. Background Technology

[0002] In wind power generation equipment, the wind turbine hub is the core component connecting the fan blades and the main shaft, and its structural strength directly affects the operational stability and service life of the wind turbine.

[0003] Traditional wind turbine hubs typically have independent flanged mounting ports for the blades. When the wind turbine is running, the blades are subjected to strong wind loads, which can easily lead to localized stress concentration and excessive deformation at the mounting ports. In particular, the lack of interconnected reinforcement structures between adjacent mounting ports makes it difficult for them to work together to resist the loads. This can easily lead to fatigue damage after long-term use, increasing maintenance costs and safety hazards. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a wind turbine hub reinforcement structure that has the advantages of flexible adjustment of the reinforcement position, strengthening the correlation strength of adjacent fan blade mounting openings, and dispersing local stress. This solves the problems of stress concentration, excessive deformation, and fatigue damage that are easily caused by the independent setting of fan blade mounting openings in traditional wind turbine hubs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wind turbine hub reinforcement structure, including a wind turbine hub, the outer surface of which has three sets of fan blade mounting openings, and the three sets of fan blade mounting openings are distributed in a ring at equal intervals. The inside of the wind turbine hub has a main shaft connection port coaxially arranged with the ring array shaft of the three sets of fan blade mounting openings. The outer surface of each of the three sets of fan blade mounting openings is fitted with a reinforcing ring. The structure also includes a mounting opening associated reinforcement component that is slidably installed on the outer surface of the three sets of fan blade mounting openings.

[0006] As a preferred embodiment of this utility model, the mounting port-associated reinforcement component includes a reinforcement member, which is slidably mounted on the outside of the reinforcement ring, and a connecting post is sleeved between each pair of opposite reinforcement members. The connecting post is used to tighten and fix the pair of opposite reinforcement members.

[0007] In a preferred embodiment of this invention, a limiting slide bar is fixedly connected to the side of the reinforcing member near the reinforcing ring, and a sliding groove is provided on the outer surface of the reinforcing ring to slide with the limiting slide bar, wherein the limiting slide bar has a trapezoidal cross-section.

[0008] As a preferred embodiment of this utility model, positioning holes are provided at both ends of the limiting slide bar on the side away from the reinforcing ring. Positioning bolts are threaded into the internal parts of the positioning holes, and the positioning bolts are fixed by friction with the inner wall of the sliding groove through the positioning holes.

[0009] As a preferred embodiment of this utility model, one end of the connecting post is threadedly connected to one of the sets of reinforcing members, and the other end is rotatably engaged with the surface of an adjacent reinforcing member. The surface is provided with a threaded groove and threadedly connected to a threaded sleeve located at the end of the connecting post. After the threaded sleeve is twisted, it is used to tighten the bottom reinforcing member and the top reinforcing member to move closer to each other for reinforcement.

[0010] As a preferred embodiment of this utility model, a hexagonal sleeve block is fixedly installed on the center of the surface of the connecting column, and the hexagonal sleeve block is used to cooperate with an external wrench to twist the connecting column.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model solves the problems of stress concentration, excessive deformation and fatigue damage that are easily caused by the independent setting of the fan hub and fan blade mounting port in traditional fan hubs and fan blades by setting up a reinforcement component that connects the fan hub, fan blade mounting port, main shaft connection port, reinforcement ring and mounting port. It achieves the advantages of flexible adjustment of reinforcement position, strengthening of the connection strength of adjacent fan blade mounting ports and dispersion of local stress.

[0013] 2. This utility model sets up a mounting port-connected reinforcement component. Two sets of closely spaced reinforcement components can be tightened together by connecting columns to ensure that the strength between each set of closely spaced fan blade mounting ports is increased, thereby enhancing the structural strength. It can also connect the flange strength of two sets of adjacent fan blade mounting ports to enhance variable force.

[0014] 3. By setting a limiting slide bar and a sliding groove, the limiting slide bar allows each set of reinforcement components to slide and change the connection position on the outer surface of the reinforcing ring. Subsequently, the position of the structural reinforcement can be adjusted, enhancing the adaptability of the structure during later installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded structural diagram of the reinforcement component associated with the installation port of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the reinforcement component of this utility model;

[0018] Figure 4 This is a schematic diagram of the main structure of this utility model.

[0019] In the diagram: 1. Fan hub; 2. Fan blade mounting port; 4. Main shaft connection port; 5. Reinforcing ring; 51. Sliding groove; 52. Limiting slide bar; 53. Positioning bolt; 531. Positioning hole; 6. Reinforcing component; 61. Connecting column; 62. Hexagonal sleeve; 621. Threaded sleeve. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0024] Example 1

[0025] Reference Figure 1-4 The first embodiment of this utility model adopts the following technical solution, including a fan hub 1, with three sets of fan blade mounting ports 2 on the outer surface of the fan hub 1, and the three sets of fan blade mounting ports 2 are distributed in a ring at equal distances. The inside of the fan hub 1 is provided with a main shaft connection port 4 coaxially arranged with the ring array shaft of the three sets of fan blade mounting ports 2. The outer surface of each of the three sets of fan blade mounting ports 2 is fitted with a reinforcing ring 5. It also includes a mounting port association reinforcement component that is slidably installed on the outer surface of the three sets of fan blade mounting ports 2. The mounting port association reinforcement component includes a reinforcement member 6, which is slidably installed on the outside of the reinforcing ring 5. A connecting post 61 is fitted between each pair of opposite reinforcement members 6. The connecting post 61 is used to tighten and fix the pair of opposite reinforcement members 6.

[0026] Specifically, the two sets of close-to-each-other reinforcement members 6 can be tightened together by the connecting column 61 to ensure that the strength between each set of close-to-each-other fan blade mounting openings 2 is increased, thereby enhancing the structural strength. It can also link the strength of the flange openings of the two sets of adjacent fan blade mounting openings 2 to enhance the variable force.

[0027] Example 2

[0028] In the second embodiment of this utility model, the following technical solution is adopted: the reinforcing member 6 is fixedly connected to the side of the reinforcing ring 5 with a limiting slide bar 52. The outer surface of the reinforcing ring 5 is provided with a sliding groove 51 that slides with the limiting slide bar 52. The limiting slide bar 52 has a trapezoidal cross-section. Both ends of the limiting slide bar 52 away from the reinforcing ring 5 are provided with positioning holes 531. The positioning holes 531 are threadedly connected to the inside of the positioning holes 531. The positioning bolts 53 are fixed by friction with the inner wall of the sliding groove 51 through the positioning holes 531.

[0029] Specifically, the limiting slide bar 52 allows each set of reinforcement parts 6 to slide and change the connection position on the outer surface of the reinforcing ring 5, and then the position adjustment of the structural reinforcement can be carried out to enhance the adaptability of the structure during later installation. The positioning hole 531, together with the positioning bolt 53, allows the positioning bolt 53 to rotate and press against the inner wall of the sliding groove 51, thereby fixing the position of the limiting slide bar 52. Then, the position of the reinforcement parts 6 is fixed by the limiting slide bar 52.

[0030] Example 3

[0031] The third embodiment of this utility model adopts the following technical solution: one end of the connecting post 61 is threadedly connected to one of the sets of reinforcing members 6, and the other end is rotatably engaged with the surface of the adjacent reinforcing member 6. The surface is provided with a threaded groove and threadedly connected to a threaded sleeve 621 located at the end of the connecting post 61. After the threaded sleeve 621 is twisted, it is used to tighten the bottom reinforcing member 6 and the top reinforcing member 6 to move closer to each other for reinforcement. A hexagonal sleeve block 62 is fixedly installed in the middle of the surface of the connecting post 61. The hexagonal sleeve block 62 is used to cooperate with an external wrench to twist the connecting post 61.

[0032] Specifically, since the top end of the reinforcing member 6 is threadedly connected to the top end of the connecting post 61, and the bottom end can be rotated by the screw sleeve 621 to bring the two sets of reinforcing members 6 fitted on the surface of the connecting post 61 closer to each other, the two sets of adjacent reinforcing members 6 can be pulled by the reinforcing ring 5 to pull the flange on their respective fan blade mounting port 2, so that the strength of their flanges is related to increase the structural strength. The hexagonal sleeve 62 can be easily turned by the user with a wrench to drive the connecting post 61 to rotate. Then, by rotating the connecting post 61, the connecting post 61 is brought closer to the top reinforcing member 6. At the same time, the bottom reinforcing member 6 can be pulled upward and tightened with the top reinforcing member 6 by turning the screw sleeve 621, thus completing the installation to strengthen the structural strength.

[0033] Working principle:

[0034] First, reinforcing rings 5 ​​are fitted onto the outer surface of each blade mounting opening 2 of the wind turbine hub 1 to provide basic support. The reinforcing member 6 slides with the sliding groove 51 of the reinforcing ring 5 through the trapezoidal limiting slide bar 52, which can flexibly adjust the relative position of adjacent reinforcing members 6. After adjustment, the positioning bolt 53 is screwed into the positioning hole 531 and pressed against the inner wall of the sliding groove 51 to fix the position of the reinforcing member 6. Then, the adjacent reinforcing members 6 are connected by the connecting column 61. One end of the connecting column 61 is threaded to the top reinforcing member 6, and the other end is inserted into the bottom reinforcing member 6. The bottom reinforcing member 6 can be moved closer to the top by twisting the screw sleeve 621. At the same time, the connecting column 61 is further pulled closer by twisting the hexagonal sleeve block 62 with a wrench. Finally, the reinforcing member 6 drives the reinforcing ring 5 to tighten the flange structure of the corresponding blade mounting opening 2, so that the originally independent blade mounting opening 2 is strongly correlated, local stress is dispersed, and the deformation resistance and structural stability of the wind turbine hub 1 are enhanced.

[0035] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0036] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0037] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wind turbine hub reinforcement structure, comprising a wind turbine hub (1), wherein the outer surface of the wind turbine hub (1) is provided with three sets of blade mounting ports (2), and the three sets of blade mounting ports (2) are distributed in a ring at equal intervals; the interior of the wind turbine hub (1) is provided with a main shaft connection port (4) coaxially arranged with the ring array shaft of the three sets of blade mounting ports (2); and a reinforcing ring (5) is fitted on the outer surface of each of the three sets of blade mounting ports (2), characterized in that: It also includes mounting port association reinforcement components that are slidably mounted on the outer surface of the three sets of fan blade mounting ports (2).

2. The wind turbine hub reinforcement structure according to claim 1, characterized in that: The mounting port associated reinforcement component includes a reinforcement member (6), which is slidably mounted on the outside of the reinforcement ring (5), and a connecting post (61) is sleeved between each pair of opposite reinforcement members (6), which is used to tighten and fix the pair of opposite reinforcement members (6).

3. The wind turbine hub reinforcement structure according to claim 2, characterized in that: The reinforcing member (6) is fixedly connected to a limiting slide bar (52) on the side near the reinforcing ring (5). The outer surface of the reinforcing ring (5) is provided with a sliding groove (51) that slides with the limiting slide bar (52). The limiting slide bar (52) has a trapezoidal cross-section.

4. The wind turbine hub reinforcement structure according to claim 3, characterized in that: The limiting slide bar (52) has positioning holes (531) at both ends on the side away from the reinforcing ring (5). The positioning holes (531) are threaded with positioning bolts (53), and the positioning bolts (53) are fixed by friction with the inner wall of the sliding groove (51) through the positioning holes (531).

5. The wind turbine hub reinforcement structure according to claim 2, characterized in that: One end of the connecting post (61) is threadedly connected to one of the sets of reinforcing members (6), and the other end is rotatably engaged with the surface of the adjacent reinforcing member (6). The surface is provided with a threaded groove and is threadedly connected to a threaded sleeve (621) located at the end of the connecting post (61). After the threaded sleeve (621) is twisted, it is used to tighten the bottom reinforcing member (6) and the top reinforcing member (6) to move closer to each other for reinforcement.

6. The wind turbine hub reinforcement structure according to claim 2, characterized in that: A hexagonal sleeve block (62) is fixedly installed on the middle part of the surface of the connecting column (61). The hexagonal sleeve block (62) is used to cooperate with an external wrench to twist the connecting column (61).

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