Wind power blade shaft sleeve
By setting a limit groove and sealing plug on the wind power blade sleeve, the rotation problem between the wind power blade sleeve and the blade is solved, which improves the connection reliability and simplifies the assembly process.
Patent Information
- Application Number
- CN202422346252.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-25
AI Technical Summary
There is a lack of a circumferential limit structure between the wind power blade shaft sleeve and the wind power blade, resulting in poor connection reliability and easy rotation.
The limit groove is set on the outer wall of the left end of the nut sleeve body for fitting with the resin of the wind power blade, limiting the rotation of the nut sleeve body with respect to the wind power blade, and a sealing plug is set at the inner end of the cavity to prevent the resin from flowing into the internal thread section, combining the annular chamfered surface design of the inner thread section and the rotation shaft to achieve reliable connection.
It effectively avoids the rotation of the nut sleeve body relative to the wind power blade, improves the connection reliability, and simplifies the assembly process of the wind power blade and the wind turbine shaft.
Smart Images
Figure CN223076025U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind power blade accessories, and more specifically, to a wind power blade bushing. Background Art
[0002] The wind power blade bushing is a connecting piece for being embedded at the inner end of a wind power blade. A middle part of the inner side of the wind power blade bushing is provided with an internal thread section for threadedly connecting with an outer end of a bolt radially fixed on a rotating shaft of a wind turbine generator to radially fix the nut sleeve body to the rotating shaft of the wind turbine generator. However, in the prior art, after the wind power blade bushing is embedded in the wind power blade, since there is no circumferential limiting structure between the wind power blade bushing and the wind power blade, it is easy to cause the situation that the wind power blade bushing rotates relative to the wind power blade, that is, there is a defect of poor connection reliability between the wind power blade bushing and the wind power blade. Summary of the Invention
[0003] The technical problem to be solved by the utility model is to provide a wind power blade bushing, which can effectively avoid the situation that the nut sleeve body rotates relative to the wind power blade, thereby improving the connection reliability between the nut sleeve body and the wind power blade.
[0004] The utility model provides a wind power blade bushing, including a nut sleeve body in a long tubular structure for being embedded at the inner end of a wind power blade. A middle part of the inner side of the nut sleeve body is provided with an internal thread section for threadedly connecting with an outer end of a bolt radially fixed on a rotating shaft of a wind turbine generator to radially fix the nut sleeve body to the rotating shaft of the wind turbine generator. An inner side of the right end of the nut sleeve body forms a cavity for allowing resin for manufacturing the wind power blade to flow in. An inner end of the cavity is connected with one end of the internal thread section. An embedding area for embedding a sealing plug is formed at the inner end of the cavity. The sealing plug is used for blocking the resin for manufacturing the wind power blade from flowing into the internal thread section. A limiting groove is arranged on an outer wall of the left end of the nut sleeve body for being embedded with the resin for manufacturing the wind power blade to limit the rotation of the nut sleeve body relative to the wind power blade.
[0005] After arranging the limiting groove on the outer wall of the left end of the nut sleeve body, the limiting groove can be embedded with the resin for manufacturing the wind power blade to limit the rotation of the nut sleeve body relative to the wind power blade, thereby effectively avoiding the situation that the nut sleeve body rotates relative to the wind power blade, and improving the connection reliability between the nut sleeve body and the wind power blade.
[0006] In a possible implementation manner, a necking portion is formed at the connection between the inner end of the embedding area and one end of the internal thread section. The necking portion is used to abut against the sealing plug and support the sealing plug. After the necking portion is provided at the connection between the inner end of the embedding area and one end of the internal thread section, after the sealing plug is inserted into the embedding area, the sealing plug can finally abut against the necking portion, so that the limiting and supporting effects on the sealing plug can be achieved, that is, the reliable assembly of the sealing plug with the nut sleeve body can be realized.
[0007] In a possible implementation manner, the inner peripheral wall of the cavity gradually expands from the inside to the outside in the radial direction of the nut sleeve body and forms an arc surface. After adopting this structure, since the inner peripheral wall of the cavity gradually expands from the inside to the outside in the radial direction of the nut sleeve body and forms an arc surface, it is convenient for the resin used to manufacture the wind turbine blade to flow into the cavity. After the resin is cured, it can be embedded and fixed together with the cavity. And since the nut sleeve body is embedded in the inner end of the wind turbine blade, after the resin is cured, the nut sleeve body can be reliably embedded and fixed together with the wind turbine blade.
[0008] In a possible implementation manner, an annular chamfer surface is provided at the other end of the internal thread section. The annular chamfer surface is used to cooperate with the outer end of the bolt radially fixed on the rotating shaft of the wind turbine generator for guiding so as to facilitate the outer end of the bolt to be screwed into the internal thread section. After the annular chamfer surface is provided at the other end of the internal thread section, when the nut sleeve body is threadedly connected with the outer end of the bolt radially fixed on the rotating shaft of the wind turbine generator, the annular chamfer surface can cooperate with the outer end of the bolt radially fixed on the rotating shaft of the wind turbine generator for guiding so as to facilitate the outer end of the bolt to be screwed into the internal thread section, that is, it can make the threaded connection between the nut sleeve body and the bolt convenient, and also can facilitate the assembly of the wind turbine blade and the rotating shaft of the wind turbine generator. Brief Description of the Drawings
[0009] Figure 1 is the front view structural schematic diagram of the present utility model;
[0010] Figure 2 is the sectional view structural schematic diagram of the present utility model. Detailed Embodiments
[0011] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.
[0012] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0013] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.
[0014] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0015] See Figure 1-2 As shown, an axle sleeve for a wind power blade is disclosed in the embodiments of the present application, which includes a nut sleeve body 1 with a long tubular structure. The nut sleeve body 1 is used for being embedded in the inner end of the wind power blade; an internal thread section 11 is arranged in the middle of the inner side of the nut sleeve body 1. The internal thread section 11 is used for being threadedly connected with the outer end of a bolt radially fixed on the rotating shaft of the wind power generation unit to radially fix the nut sleeve body 1 to the rotating shaft of the wind power generation unit; a cavity 12 for the resin for manufacturing the wind power blade to flow into is formed inside the right end of the nut sleeve body 1. The inner end of the cavity 12 is connected with one end of the internal thread section 11. An embedding area 13 for embedding a sealing plug is formed at the inner end of the cavity 12. The sealing plug is used for blocking the resin for manufacturing the wind power blade from flowing into the internal thread section 11; a limiting groove 14 is arranged on the outer wall of the left end of the nut sleeve body 1. The limiting groove 14 is used for being embedded with the resin for manufacturing the wind power blade to limit the relative rotation of the nut sleeve body 1 with respect to the wind power blade.
[0016] A reduced diameter portion 15 is formed at the connection between the inner end of the embedding area 13 and one end of the internal thread section 11. The reduced diameter portion 15 is used for abutting against the sealing plug and realizing the support for the sealing plug. After the reduced diameter portion is arranged at the connection between the inner end of the embedding area and one end of the internal thread section, after the sealing plug is loaded into the embedding area, the sealing plug can finally abut against the reduced diameter portion, so that the limiting and supporting effects on the sealing plug can be realized, that is, the reliable assembly of the sealing plug with the nut sleeve body can be achieved.
[0017] The inner peripheral wall of the cavity 12 gradually expands from the inside to the outside in the radial direction of the nut sleeve body 1 and forms an arc surface; after adopting this structure, since the inner peripheral wall of the cavity gradually expands from the inside to the outside in the radial direction of the nut sleeve body and forms an arc surface, it is convenient for the resin used to manufacture the wind turbine blade to flow into the cavity. After the resin is cured, it can be embedded and fixed with the cavity. And since the nut sleeve body is pre-buried in the inner end of the wind turbine blade, after the resin is cured, the nut sleeve body can be reliably embedded and fixed with the wind turbine blade.
[0018] An annular chamfered surface 16 is provided at the other end of the internal thread section 11. The annular chamfered surface 16 is used to cooperate and guide with the outer end of the bolt radially fixed on the rotating shaft of the wind turbine generator so as to facilitate the outer end of the bolt to be screwed into the internal thread section 11; by providing the annular chamfered surface at the other end of the internal thread section, when the nut sleeve body is threadedly connected with the outer end of the bolt radially fixed on the rotating shaft of the wind turbine generator, the annular chamfered surface can cooperate and guide with the outer end of the bolt radially fixed on the rotating shaft of the wind turbine generator so as to facilitate the outer end of the bolt to be screwed into the internal thread section, that is, it can make the threaded connection between the nut sleeve body and the bolt convenient, and also can facilitate the assembly of the wind turbine blade and the rotating shaft of the wind turbine generator.
[0019] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A wind turbine blade bushing, comprising a nut sleeve body (1) in the shape of a long tubular structure, and the nut sleeve body (1) is used for being embedded in the inner end of the wind turbine blade; a middle part inside the nut sleeve body (1) is provided with an internal thread section (11), and the internal thread section (11) is used for being in threaded connection with the outer end of a bolt radially fixed on the rotating shaft of the wind turbine generator set to radially fix the nut sleeve body (1) to the rotating shaft of the wind turbine generator set; characterized in that: An inner side of the right end of the nut sleeve body (1) forms a cavity (12) for allowing resin for manufacturing a wind power blade to flow in. An inner end of the cavity (12) is connected to one end of the internal thread section (11). An installation area (13) for embedding a sealing plug is formed at the inner end of the cavity (12). The sealing plug is used to block the resin for manufacturing the wind power blade from flowing into the internal thread section (11). A limiting groove (14) is provided on an outer wall of the left end of the nut sleeve body (1). The limiting groove (14) is used to engage with the resin for manufacturing the wind power blade to limit the rotation of the nut sleeve body (1) relative to the wind power blade.
2. The wind power blade bushing according to claim 1, wherein: A necking portion (15) is formed at a connection position between the inner end of the installation area (13) and one end of the internal thread section (11). The necking portion (15) is used to abut against the sealing plug and support the sealing plug.
3. The wind power blade bushing according to claim 1 or 2, characterized in that: An inner peripheral wall of the cavity (12) gradually expands from inside to outside in a radial direction of the nut sleeve body (1) and forms an arc surface.
4. The wind power blade bushing according to claim 1, wherein: An annular chamfer surface (16) is provided at the other end of the internal thread section (11). The annular chamfer surface (16) is used to cooperate and guide with an outer end of a bolt radially fixed on a rotating shaft of a wind power generation set so that the outer end of the bolt can be screwed into the internal thread section (11).