Forming structure for main beam, main beam and wind turbine generator set

Abstract

The present invention discloses a forming structure for a main beam, a main beam and a wind turbine generator set, and relates to the technical field of wind turbine generator sets. The forming structure includes a top sealing plate, a bottom sealing plate, and a plurality of connecting plates. The top sealing plate is arranged opposite to the bottom sealing plate, the bottom of the top sealing plate has a first special-shaped snap-in surface, and the top of the bottom sealing plate has a second special-shaped snap-in surface; the top and bottom surfaces of the connecting plates are both special-shaped surfaces, and a plurality of the connecting plates are stacked in sequence; the top surface of the connecting plate at the top is adapted to and abuts against the first special-shaped snap-in surface, and the bottom surface of the connecting plate at the bottom is adapted to and abuts against the second special-shaped snap-in surface. The technical solution of the present invention avoids chordal misalignment and the problem of rich resin, and does not require the use of specific expansion tooling and expansion processes, thereby reducing production costs.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine generator sets, and in particular to a molding structure for a main beam, a main beam and a wind turbine generator set. Background Art

[0002] In the current existing technology, the main beam is made by splicing the pultruded plates and stacking them layer by layer. It is necessary to use a specific expansion tool and expansion process to compact the pultruded plates. The pultruded plates made in this way are prone to chordal misalignment, resulting in the problem of resin-rich beam edges of the pultruded plates. In addition, the production process requires the use of specific expansion tools and expansion processes, which increases production costs. Summary of the invention

[0003] The main purpose of the present invention is to propose a molding structure for the main beam, the main beam and the wind turbine generator set, aiming to solve the problem of chordal misalignment between pultruded plates in the prior art, resulting in resin richness, and the need to use specific expansion tooling and expansion processes during the production process, thereby increasing the production cost.

[0004] To achieve the above object, the present invention proposes a forming structure for a main beam, the forming structure comprising:

[0005] A top sealing plate and a bottom sealing plate, wherein the top sealing plate is arranged opposite to the bottom sealing plate, the bottom of the top sealing plate has a first special-shaped clamping surface, and the top of the bottom sealing plate has a second special-shaped clamping surface;

[0006] A plurality of connecting plates, wherein the top and bottom surfaces of the connecting plates are both shaped surfaces, and the connecting plates are stacked in sequence;

[0007] The top surface of the connecting plate at the top is adapted to and abuts against the first special-shaped clamping surface, and the bottom surface of the connecting plate at the bottom is adapted to and abuts against the second special-shaped clamping surface.

[0008] In one embodiment, the top of the connecting plate has a first connecting surface, and the bottom has a second connecting surface, and the shape of the first connecting surface of any connecting plate matches the shape of the second connecting surface of the connecting plate adjacent thereto;

[0009] The first connection surface at the top is adapted to and abuts against the first special-shaped clamping surface, and the second connection surface at the bottom is adapted to and abuts against the second special-shaped clamping surface.

[0010] In one embodiment, the molding structure includes a first preset shape, a second preset shape, and a third preset shape, and the shape of the first connecting surface is one of the first preset shape, the second preset shape, or the third preset shape.

[0011] In one embodiment, when the first connecting surface is in the first preset shape, the first connecting surface is in an upwardly protruding triangular shape.

[0012] In one embodiment, when the first connecting surface is in the second preset shape, the first connecting surface is in an “S” shape.

[0013] In one embodiment, when the first connecting surface is in the third preset shape, the first connecting surface is in an upwardly convex arc shape.

[0014] In one embodiment, a shape of the first connection surface is the same as or different from a shape of the second connection surface.

[0015] In one embodiment, the top surface of the top sealing plate has a first supporting surface, the bottom surface of the bottom sealing plate has a second supporting surface, and the first supporting surface and the second supporting surface are parallel to each other.

[0016] In addition, in order to solve the above-mentioned problem, the present invention further proposes a main beam, which includes a plurality of the above-mentioned forming structures, and the plurality of the forming structures are connected in a matrix distribution.

[0017] In addition, to solve the above-mentioned problem, the present invention further proposes a wind turbine generator set, which includes fan blades and a main beam as described above, and a plurality of the fan blades are arranged in sequence and spaced apart along the circumference of the main beam.

[0018] The technical solution of the present invention is composed of a plurality of said connecting plates stacked, and the top and bottom plates are respectively provided with the top sealing plate and the bottom sealing plate. The top and bottom of the said connecting plate both adopt special profiled cross-sections, and the special profiled shapes are used for clamping, thereby fundamentally avoiding sliding between two adjacent said connecting plates, and also avoiding sliding between the connecting plate and the top sealing plate and the bottom sealing plate, thereby avoiding chordal misalignment and the problem of resin richness. And there is no need to adopt specific expansion tooling and expansion process, thus reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 An exploded view of a first embodiment of a molding structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the top sealing plate in the molding structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the bottom sealing plate in the molding structure of the present invention;

[0023] Figure 4 It is a structural schematic diagram of a connecting plate in the molding structure of the present invention;

[0024] Figure 5 An exploded view of a second embodiment of the molding structure of the present invention;

[0025] Figure 6 It is an exploded view of the third embodiment of the molding structure of the present invention.

[0026] Description of Figure Numbers:

[0027] 1. Main beam; 10. Top sealing plate; 11. First special-shaped snap-in surface; 12. First supporting surface; 20. Bottom sealing plate; 21. Second special-shaped snap-in surface; 22. Second supporting surface; 30. Connecting plate; 31. First connecting surface; 32. Second connecting surface.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The present invention proposes a molding structure, which includes a top sealing plate 10, a bottom sealing plate 20, and multiple connecting plates 30. The top sealing plate 10 is arranged opposite to the bottom sealing plate 20, the bottom of the top sealing plate 10 has a first special-shaped clamping surface 11, and the top of the bottom sealing plate 20 has a second special-shaped clamping surface 21; the top surface and the bottom surface of the connecting plate 30 are both special-shaped surfaces, and multiple connecting plates 30 are stacked in sequence, wherein the top surface of the connecting plate 30 located at the top abuts against the first special-shaped clamping surface 11, and the bottom surface of the connecting plate 30 located at the bottom abuts against the second special-shaped clamping surface 21.

[0033] Please refer to Figure 1 The forming structure is used to make the main beam 1, and the main beam 1 is formed by connecting multiple forming structures in sequence. Specifically, first, according to the width of the main beam 1, several bottom sealing plates 20 are taken and spliced ​​to form the bottom layer of the main beam 1, and then the corresponding number of connecting plates 30 is calculated according to the height requirement of the main beam 1, and multiple connecting plates 30 are stacked layer by layer, and finally a top sealing plate 10 is set on the top of each connecting plate 30, so that the final height corresponds to the height of the main beam 1.

[0034] In this embodiment, please refer to Figure 2 , 3 4. The forming structure is formed by stacking a plurality of connecting plates 30 from bottom to top, and the connecting plates 30 include a top surface and a bottom surface, and both the top surface and the bottom surface of the connecting plates 30 are irregular surfaces. Therefore, when the plurality of connecting plates 30 are stacked, the top and bottom surfaces of any two adjacent connecting plates 30 can be mutually engaged through the irregular shapes, so as to prevent the two connecting plates 30 from sliding.

[0035] Furthermore, in this embodiment, the top sealing plate 10 has a first special-shaped snap-fit ​​surface 11 at the bottom, and among the stacked multiple connecting plates 30, the top surface shape of the connecting plate 30 located at the top matches the shape of the first special-shaped snap-fit ​​surface 11, thereby ensuring that the top sealing plate 10 and the adjacent connecting plates 30 are mutually clamped. Similarly, the top of the bottom sealing plate 20 has a second special-shaped snap-fit ​​surface 21, and among the stacked multiple connecting plates 30, the bottom surface shape of the connecting plate 30 located at the bottom matches the shape of the second special-shaped snap-fit ​​surface 21, thereby ensuring that the bottom sealing plate 20 and the adjacent connecting plates 30 are mutually clamped. This prevents the top sealing plate 10 and the bottom sealing plate 20 from sliding.

[0036] The technical solution of the present invention is composed of a plurality of said connecting plates 30 stacked, and the top sealing plate 10 and the bottom sealing plate 20 are respectively arranged on the top and the bottom. The top and the bottom of the said connecting plate 30 are both specially shaped cross-sections, and the special-shaped shapes are used for clamping, thereby fundamentally avoiding sliding between two adjacent said connecting plates 30, and also avoiding sliding between the connecting plate 30 and the top sealing plate 10 and the bottom sealing plate 20, thereby avoiding chordal misalignment and the problem of rich resin. And there is no need to use specific expansion tooling and expansion process, which reduces production costs.

[0037] Further, as another embodiment, the top surface of the connecting plate 30 is defined as the first connecting surface 31, and the bottom surface of the connecting plate 30 is defined as the second connecting surface 32. When multiple connecting plates 30 are stacked, the upper connecting plate 30 of the two adjacent connecting plates 30 is defined as the upper connecting plate 30, and the lower connecting plate 30 is defined as the lower connecting plate 30, then the second connecting surface 32 of the upper connecting plate 30 and the first connecting surface 31 of the lower connecting plate 30 abut against each other.

[0038] In this embodiment, the shape of the second connecting surface 32 of the upper connecting plate 30 is set to be the same as the shape of the first connecting surface 31 of the lower connecting plate 30, so that when they abut against each other, the two connecting surfaces can be completely fitted together to avoid a gap between them, thereby further improving the tightness of the connection between them.

[0039] In addition, the edge side walls of the connecting plate 30 are vertical surfaces, and the edge side walls of the top sealing plate 10 and the bottom sealing plate 20 are also vertical surfaces. The top surface of the top sealing plate 10 and the bottom surface of the bottom sealing plate 20 are both horizontal support surfaces, which are the first support surface 12 and the second support surface 22, respectively. The support surface is used to provide a mounting surface for other external structures, or to be supported on an external structure. After the top sealing plate 10, multiple connecting plates 30, and the bottom sealing plate 20 are stacked, the molding structure can form a columnar structure with a flat outer surface, and then the multiple molding structures can be spliced ​​to form the main beam 1. Specifically, the multiple molding structures are sequentially arranged in a matrix distribution along the longitudinal direction and the axial direction, and are closely abutted to form the main beam 1.

[0040] Specifically, as another embodiment, the first connecting surface 31 can be set to a variety of different shapes, including a first preset shape, a second preset shape and a third preset shape in this embodiment.

[0041] The first connection surface 31 may be any one of the first preset shape, the second preset shape or the third preset shape. As can be seen from the above, in order to ensure that the top surface of the upper connection plate 30 and the bottom surface of the lower connection plate 30 are completely fitted together, the top surface of the upper connection plate 30 and the bottom surface of the lower connection plate 30 may be kept in the same shape.

[0042] Furthermore, the top surface and the bottom surface of the same connecting plate 30 may have the same or different shapes. For example, the top surface of the connecting plate 30 may have the first preset shape, and the bottom surface may have the first preset shape, the second preset shape, or the third preset shape.

[0043] In this embodiment, the same shape is used as an example for description, wherein the first preset shape may be a triangle shape, the second preset shape may be an "S" shape, and the third preset shape may be an arc shape.

[0044] Please refer to Figure 1 When the first preset shape is adopted, the top of the connecting plate 30 is convex upward, and the top portion of the convex portion is pointed, so that its cross section is triangular. Correspondingly, the bottom of the connecting plate 30 is also convex upward. Since the bottom surface of the connecting plate 30 is convex upward, that is, the bottom of the connecting plate 30 is concave upward, forming the same triangular shape as when the top surface is convex.

[0045] Please refer to Figure 5 When the second preset shape is adopted, the top of the connecting plate 30 has a plurality of upwardly protruding bumps, and a groove is formed between two bumps, thereby forming a structure similar to a snake or "S" shape. Correspondingly, the bottom of the connecting plate 30 also has a plurality of upwardly protruding bumps. Similarly, the upward protrusion of the bottom of the connecting plate 30 means that the bottom of the connecting plate 30 is upwardly concave.

[0046] Please refer to Figure 6 When the third preset shape is adopted, the top of the connecting plate 30 is convex upward, and the surface is a smooth arc surface. Correspondingly, the top of the connecting plate 30 is also formed into a smooth arc surface convex shape upward, that is, the bottom of the connecting plate 30 is concave upward to form an arc-shaped concave shape.

[0047] In order to solve the above problem, the present invention further proposes a wind turbine generator set, which includes blades and a main beam 1 as described above, wherein a plurality of blades are sequentially spaced apart along the circumference of the main beam 1 .

[0048] The forming structure is used to make the main beam 1, and the main beam 1 is formed by connecting a plurality of forming structures in sequence. Specifically, firstly, a plurality of bottom sealing plates 20 are spliced ​​according to the width of the main beam 1 to form the bottom layer of the main beam 1, and then a corresponding number of connecting plates 30 are calculated according to the height requirement of the main beam 1, and a plurality of connecting plates 30 are stacked layer by layer, and finally a top sealing plate 10 is arranged on the top of each connecting plate 30, so that the final height corresponds to the height of the main beam 1.

[0049] After the main beam 1 is manufactured, the fan blades can be connected to the main shaft to achieve wind-driven rotation for power generation.

[0050] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A forming structure for a main beam, characterized in that: The molding structure comprises: A top sealing plate (10) and a bottom sealing plate (20), wherein the top sealing plate (10) and the bottom sealing plate (20) are arranged opposite to each other, the bottom of the top sealing plate (10) has a first special-shaped snap-fit ​​surface (11), and the top of the bottom sealing plate (20) has a second special-shaped snap-fit ​​surface (21); A plurality of connecting plates (30), wherein the top surface and the bottom surface of the connecting plates (30) are both profiled surfaces, and the plurality of connecting plates (30) are stacked in sequence; The top surface of the connecting plate (30) at the top is adapted to and abuts against the first special-shaped snap-fit ​​surface (11), and the bottom surface of the connecting plate (30) at the bottom is adapted to and abuts against the second special-shaped snap-fit ​​surface (21).

2. The molding structure according to claim 1, characterized in that: The connecting plate (30) has a first connecting surface (31) at the top and a second connecting surface (32) at the bottom, and the shape of the first connecting surface (31) of any connecting plate (30) is compatible with the shape of the second connecting surface (32) of the connecting plate (30) adjacent thereto; The first connection surface (31) at the top is adapted to and abuts against the first special-shaped clamping surface (11), and the second connection surface (32) at the bottom is adapted to and abuts against the second special-shaped clamping surface (21).

3. The molding structure according to claim 2, characterized in that: The molding structure comprises a first preset shape, a second preset shape and a third preset shape, and the shape of the first connecting surface (31) is one of the first preset shape, the second preset shape or the third preset shape.

4. The molding structure according to claim 3, characterized in that: When the first connecting surface (31) is in the first preset shape, the first connecting surface (31) is in the shape of a triangle protruding upward.

5. The molding structure according to claim 3, characterized in that: When the first connecting surface (31) is in the second preset shape, the first connecting surface (31) is in an "S" shape.

6. The molding structure according to claim 3, characterized in that: When the first connecting surface (31) is in the third preset shape, the first connecting surface (31) is in the shape of an upwardly convex arc.

7. The molding structure according to claim 2, characterized in that: The shape of the first connecting surface (31) is the same as or different from the shape of the second connecting surface (32).

8. The molding structure according to claim 1, characterized in that: The top surface of the top sealing plate (10) has a first supporting surface (12), and the bottom surface of the bottom sealing plate (20) has a second supporting surface (22), and the first supporting surface (12) and the second supporting surface (22) are parallel to each other.

9. A main beam, characterized in that: The main beam (1) comprises a plurality of the shaped structures according to any one of claims 1 to 8, and the plurality of shaped structures are connected in a matrix distribution.

10. A wind turbine generator set, characterized in that: The wind turbine generator set comprises blades and a main beam (1) as claimed in claim 9, wherein a plurality of the blades are sequentially spaced apart along the circumference of the main beam (1).

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