A deformation prevention structure for segmented wind power tower barrels

Abstract

An anti-deformation structure for a segmented wind power tower barrel, which is transversely connected between the two longitudinal edges of the barrel segment body, includes two connecting screws respectively fixed on the two longitudinal edges of the barrel segment body and an adjusting part for connecting the two connecting screws. The adjusting part includes a turnbuckle nut. The threaded holes at both ends of the turnbuckle nut are coaxially threadedly engaged with the corresponding connecting screws respectively. Rotating the turnbuckle nut can achieve the relative movement and the reverse movement of the two connecting screws. An anti-rotation assembly for the turnbuckle nut is arranged at the hollow part in the middle of the turnbuckle nut. During use, by rotating the turnbuckle nut, the precise adjustment of the distance between the two connecting screws can be achieved. Then, through the anti-rotation assembly, it can effectively prevent the turnbuckle nut from rotating in the reverse direction due to the long-term axial tension, thereby avoiding the situation that the distance between the connecting screws changes. This anti-deformation structure has the advantages of simple operation and good anti-deformation effect.

Description

Technical Field

[0001] The present invention relates to an anti-deformation structure for wind power tower sections, belonging to the technical field of anti-deformation of wind power tower sections. Background Art

[0002] Due to the cylindrical structure and large radial dimensions of the wind power tower, it is relatively difficult to directly transport it, and there are significant safety hazards during transportation. To avoid these problems, existing manufacturers usually longitudinally split the cylindrical body into multiple sections in the factory, then stack and transport them, and finally assemble them into a complete cylinder at the installation site for use. The split tower sections are thin and long arc-shaped plates, and due to their large self-weight, they are extremely prone to longitudinal flange deformation and need to be repaired before installation. In severe cases, it may even cause the scrapping of the tower sections.

[0003] The Chinese utility model patent "Authorization Publication No.: CN218439617U; Authorization Publication Date: February 3, 2023; Title: An Anti-Deformation Device for Wind Power Split-Type Towers" provides an anti-deformation structure for wind power tower sections. This anti-deformation structure is transversely connected between the two side edges of the wind power tower section. The anti-deformation structure is a telescopic pull rod, which consists of a connecting part, a snap spring, and an adjusting part. The snap spring is arranged inside the adjusting part, and the protrusion of the snap spring extends out of the positioning hole of the adjusting part from the inside to the outside. When in use, by engaging the protrusion in the positioning hole of the adjusting part with different adjusting holes on the connecting part, the length of the pull rod can be adjusted.

[0004] This anti-deformation device has the following defects: 1. The positioning between the adjusting part and the connecting part is only carried out by the protrusion of the snap spring, and the positioning strength is small, making it difficult to withstand long-term gravity load; 2. There is always a distance between the adjusting holes arranged at intervals on the connecting part, making it difficult to achieve precise control of the length of the pull rod; 3. The length adjustment of the pull rod requires manually axially adjusting the connecting part and the adjusting part in place and then limiting the position. Although the operation method is simple, the operation difficulty is large. Summary of the Invention

[0005] The purpose of the present invention is to address the above technical defects of the existing anti-deformation device for wind power towers and provide a new anti-deformation structure for wind power tower sections. This anti-deformation structure includes connecting screws fixed on the two longitudinal edges of the wind power tower section and a turnbuckle nut for adjusting the distance between the two connecting screws. An anti-rotation component for the turnbuckle nut is arranged in the hollow middle of the turnbuckle nut. When in use, by rotating the turnbuckle nut, the distance between the two connecting screws can be accurately adjusted. Through the anti-rotation component, it can effectively prevent the turnbuckle nut from rotating in the reverse direction due to long-term axial tension, thereby causing a change in the distance between the connecting screws. This anti-deformation structure has the advantages of simple operation and good anti-deformation effect.

[0006] The above technical object of the present invention is achieved by the following technical solutions:

[0007] A deformation prevention structure for a wind power tower cylinder segment, which is horizontally connected between two longitudinal edges of the tower cylinder segment body, includes two connecting screws respectively fixed on the two longitudinal edges of the tower cylinder segment body and an adjusting part for connecting the two connecting screws. The adjusting part includes a turnbuckle nut. The threaded holes at both ends of the turnbuckle nut are respectively in threaded cooperation with the corresponding connecting screws. Rotating the turnbuckle nut can realize the approaching movement and the separating movement of the two connecting screws. An anti-rotation component for the turnbuckle nut is arranged at the hollow part in the middle of the turnbuckle nut.

[0008] By adopting the above technical solutions, a deformation prevention structure for a wind power tower cylinder segment is improved. The deformation prevention structure includes connecting screws fixed on the two longitudinal edges of the wind power tower cylinder segment and a turnbuckle nut for adjusting the distance between the two connecting screws, and an anti-rotation component for the turnbuckle nut is arranged in the middle hollow of the turnbuckle nut. During use, by rotating the turnbuckle nut, the distance between the two connecting screws can be accurately adjusted. Through the anti-rotation component, it can effectively prevent the long-term axial tension from causing the turnbuckle nut to rotate in the reverse direction, thereby causing the change of the distance between the connecting screws. The deformation prevention structure has the advantages of simple operation and good deformation prevention effect.

[0009] The further setting of the present invention is that the anti-rotation component includes a rotating cylinder located in the middle hollow part of the turnbuckle nut. The rotating cylinder is coaxial with the threaded holes at both ends of the turnbuckle nut. The rotating cylinder can freely rotate but cannot axially move in the middle hollow of the turnbuckle nut. Limiting parts are sleeved inside both ends of the rotating cylinder. The limiting parts include a threaded part and a limiting part fixed together. The external thread of the threaded part is in threaded cooperation with the internal thread of the inner hole walls at both ends of the rotating cylinder. A first anti-rotation structure is arranged between the middle part of the limiting part and the end part of the connecting screw. A second anti-rotation structure is arranged between the limiting part and the inner wall of the middle hollow of the turnbuckle nut. The second anti-rotation structure enables the limiting part not to rotate but can axially slide in the middle hollow of the turnbuckle nut.

[0010] By adopting the above technical solutions, the specific structure of the anti-rotation component is defined. The anti-rotation component can realize the docking and separation between the limiting parts at both ends and the connecting screw by rotating the rotating cylinder, and has the advantages of simple operation and good anti-rotation effect.

[0011] The further setting of the present invention is that a limiting sleeve coaxial with the threaded part is arranged on the outer side of the limiting part. The limiting sleeve is slidably sleeved on the positioning ring seat on the connecting screw.

[0012] By adopting the above technical solutions, a limiting sleeve is added to the limiting part. Through the sliding cooperation between the limiting sleeve and the positioning ring seat on the connecting screw, the connecting screw can be guided and limited, and the smooth progress of length adjustment and positioning anti-rotation adjustment can be effectively ensured.

[0013] A further setting of the present invention is that a second anti-rotation structure is also provided between the outer side of the limit sleeve and the hollow inner wall in the middle of the rotating cylinder. The limit sleeve cannot rotate but can axially slide within the hollow middle of the flower basket nut.

[0014] By adopting the above technical solution, the limit sleeve is also designed to be in contact with the hollow inner wall in the middle of the rotating cylinder, which can further improve the guiding and limiting ability of the limit sleeve for the connecting screw.

[0015] A further setting of the present invention is that the threaded part is a cylinder with an external thread.

[0016] By adopting the above technical solution, the threaded part is designed as a hollow cylinder, realizing the light weight of the adjusting component, saving raw materials and facilitating the normal progress of the adjusting action.

[0017] A further setting of the present invention is that the first anti-rotation structure is a limiting prism at the end of the connecting screw and a limiting multi-faceted hole in the middle of the limiting part.

[0018] A further setting of the present invention is that the limit of the rotating cylinder within the hollow middle of the flower basket nut is realized through the cooperation of the sliding groove on the outer ring of the rotating cylinder and the block within the hollow middle of the flower basket nut.

[0019] By adopting the above technical solution, the installation method of the rotating cylinder within the hollow middle of the flower basket nut is defined.

[0020] A further setting of the present invention is that a connecting piece is fixed to the outer end of the connecting screw, and the outer end of the connecting piece is fixed to the longitudinal flange at the two longitudinal edges of the tower barrel segment body.

[0021] A further setting of the present invention is that the connecting piece includes a U-shaped plate part corresponding to the connecting flange and a rod body connecting part connected to the connecting screw. When the U-shaped plate part is embedded in the longitudinal flange, the corresponding rod body connecting parts are coaxial between the two longitudinal edges of the tower barrel segment body.

[0022] By adopting the above technical solution, the connection method between the connecting screw and the two longitudinal edges of the tower barrel segment is defined.

[0023] A further setting of the present invention is that the rod body connecting part and the U-shaped plate part are hinged by a longitudinal pin shaft.

[0024] By adopting the above technical solution, the rod body connecting part and the U-shaped plate part are hinged, reducing the production precision requirements for the connecting piece and effectively reducing the manufacturing cost.

[0025] The main beneficial effects of the present invention are:

[0026] 1. The anti-deformation structure of the present invention includes connecting screws fixed on the two longitudinal edges of the wind power tower barrel segments and a turnbuckle nut for adjusting the distance between the two connecting screws. An anti-rotation component for the turnbuckle nut is provided in the hollow middle of the turnbuckle nut. During use, by rotating the turnbuckle nut, the distance between the two connecting screws can be accurately adjusted. Then, through the anti-rotation component, it can effectively prevent the turnbuckle nut from rotating in the reverse direction due to long-term axial tension, thereby avoiding the situation where the distance between the connecting screws changes. This anti-deformation structure has the advantages of simple operation and good anti-deformation effect.

[0027] 2. In the anti-deformation structure of the present invention, the anti-rotation component can achieve the docking and separation between the two end limit members and the connecting screw by rotating the rotating cylinder, which has the advantages of simple operation and good anti-rotation effect.

[0028] 3. The anti-deformation structure of the present invention adds a limit sleeve to the limit member. Through the sliding fit between the limit sleeve and the positioning ring seat on the connecting screw, the connecting screw can be guided and limited, which can effectively ensure the smooth progress of length adjustment and positioning anti-rotation adjustment.

[0029] 4. The anti-deformation structure of the present invention hinges the rod body connecting part and the U-shaped plate member, reducing the production precision requirements for the connecting parts and effectively reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 It is a schematic structural diagram of the present invention installed on the wind power tower barrel segment body;

[0032] Figure 2 It is a schematic structural diagram of the adjustment part in the present invention;

[0033] Figure 3 is Figure 1 an enlarged view of part A in

[0034] In the figure, 1. Tower barrel segment body; 2. End flange; 3. Longitudinal flange; 31. Positioning ring seat; 32. Limit prism; 4. Adjustment part; 41. Turnbuckle nut; 42. Rotating cylinder; 431. Thread part; 432. Limit part; 433. Limit sleeve; 5. Connecting screw; 61. Rod body connecting part; 62. U-shaped plate member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] As Figure 1 shown, a deformation prevention structure for a wind power tower segment is transversely connected between the two longitudinal edges of the tower segment body 1, and includes two connecting screws 5 respectively fixed on the two longitudinal edges of the tower segment body 1 and an adjusting part 4 for connecting the two connecting screws 5. The adjusting part 4 includes a turnbuckle 41. The threaded holes at both ends of the turnbuckle 41 are in threaded cooperation with the corresponding connecting screws 5 respectively. Rotating the turnbuckle 41 can realize the relative movement and the reverse movement of the two connecting screws 5. An anti-rotation assembly for the turnbuckle 41 is provided at the hollow part in the middle of the turnbuckle 41.

[0038] A connecting piece is fixed at the outer end of the connecting screw 5, and the outer end of the connecting piece is fixed on the longitudinal flange 3 at the two longitudinal edges of the tower segment body 1. The connecting piece includes a U-shaped plate member 62 corresponding to the connecting flange 3 and a rod connecting part 61 connected to the connecting screw 5. When the U-shaped plate member 62 is installed on the longitudinal flange 3, the corresponding rod connecting parts 61 are coaxial between the two longitudinal edges of the tower segment body 1. As an alternative solution, a longitudinal pin shaft can also be used for hinging between the rod connecting part 61 and the U-shaped plate member 62. In this way, the requirement for dimensional accuracy during the production of the connecting piece components can be reduced.

[0039] The anti-rotation assembly includes a rotating cylinder 42 located in the hollow part in the middle of the flower basket nut 41. The rotating cylinder 42 is coaxial with the threaded holes at both ends of the flower basket nut 41. The rotating cylinder 42 can rotate freely but cannot move axially within the hollow part in the middle of the flower basket nut 41. Limiting members are sleeved inside both ends of the rotating cylinder 42. The limiting members include a threaded part 431 and a limiting part 432 fixed together. The external thread of the threaded part 431 is engaged with the internal thread of the inner hole walls at both ends of the rotating cylinder 42. A first anti-rotation structure is provided between the middle part of the limiting part 432 and the end part of the connecting screw 5. A second anti-rotation structure is provided between the limiting part 432 and the inner wall of the hollow part in the middle of the flower basket nut 41. The second anti-rotation structure enables the limiting part 432 not to rotate but to slide axially within the hollow part in the middle of the flower basket nut 41. A limiting sleeve 433 coaxial with the threaded part 431 is provided on the outer side of the limiting part 432. The limiting sleeve 433 is slidably sleeved on the positioning ring seat 31 on the connecting screw 5. A second anti-rotation structure is also provided between the outer side of the limiting sleeve 433 and the inner wall of the hollow part in the middle of the rotating cylinder 42. The limiting sleeve 433 cannot rotate but can slide axially within the hollow part in the middle of the flower basket nut 41. The threaded part 431 is a cylinder with an external thread. The first anti-rotation structure is a limiting prism 32 at the end of the connecting screw 5 and a limiting multi-faceted hole in the middle of the limiting part 432. The limiting of the rotating cylinder 42 within the hollow part in the middle of the flower basket nut 41 is achieved through the cooperation between the chute on the outer circle of the rotating cylinder 42 and the stopper 411 within the hollow part in the middle of the flower basket nut 41.

[0040] Principle of use:

[0041] First, assemble the adjusting part 4 with the two connecting screws 5 (after installation, the limiting part 432 in the adjusting part 4 and the limiting prism 32 on the connecting screw 5 are in a separated state, and the flower basket nut 41 can be rotated freely), and then install the anti-deformation structure assembled by the connecting parts at the outer ends of the two connecting screws 5 on the longitudinal flanges 3 at the two longitudinal edges of the wind turbine tower section body 1.

[0042] By rotating and adjusting the flower basket nut 41, adjust the two connecting screws 5 to the appropriate positions, and then rotate the rotating cylinder 42 to complete the docking between the limiting part 432 in the adjusting part 4 and the limiting prism 32 on the connecting screw 5, thus completing the positioning of the flower basket nut 41.

Claims

1. A deformation prevention structure for a wind power tower barrel segment, which is transversely connected between two longitudinal edges of the tower barrel segment body (1), and includes two connecting screws (5) respectively fixed on the two longitudinal edges of the tower barrel segment body (1) and an adjusting part (4) for connecting the two connecting screws (5), and is characterized in that: The described adjusting part (4) includes a turnbuckle (41). The threaded holes at both ends of the turnbuckle (41) are coaxially threadedly engaged with the corresponding connecting screws (5). Rotating the turnbuckle (41) can achieve the approaching and separating movements of the two connecting screws (5). An anti-rotation assembly for the turnbuckle (41) is provided at the hollow part in the middle of the turnbuckle (41). The anti-rotation assembly includes a rotating cylinder (42) located in the hollow part in the middle of the turnbuckle (41). The rotating cylinder (42) is coaxial with the threaded holes at both ends of the turnbuckle (41). The rotating cylinder (42) can freely rotate but cannot axially move within the hollow part in the middle of the turnbuckle (41). Limiting parts are sleeved inside both ends of the rotating cylinder (42). The limiting parts include a threaded part (431) and a limiting part (432) fixed together. The external thread of the threaded part (431) is engaged with the internal thread of the inner hole wall at both ends of the rotating cylinder (42). A first anti-rotation structure is provided between the middle part of the limiting part (432) and the end of the connecting screw (5). A second anti-rotation structure is provided between the limiting part (432) and the inner wall of the hollow part in the middle of the turnbuckle (41). The second anti-rotation structure enables the limiting part (432) not to rotate but to axially slide within the hollow part in the middle of the turnbuckle (41).

2. The anti-deformation structure of a wind power tower barrel segment according to claim 1, characterized in that: A limiting sleeve (433) coaxial with the threaded part (431) is provided on the outer side of the limiting part (432). The limiting sleeve (433) is slidably sleeved on a positioning ring seat (31) on the connecting screw (5).

3. The anti-deformation structure of a segmented wind power tower barrel according to claim 2, characterized in that: A second anti-rotation structure is also provided between the outer side of the limiting sleeve (433) and the inner wall of the hollow part in the middle of the rotating cylinder (42). The limiting sleeve (433) cannot rotate but can axially slide within the hollow part in the middle of the turnbuckle (41).

4. A deformation prevention structure for a segmented wind power tower barrel according to claim 1, characterized in that: The threaded part (431) is a cylinder with an external thread.

5. The anti-deformation structure of a wind power tower barrel segment according to claim 1, characterized in that: The first anti-rotation structure is a limiting prism (32) at the end of the connecting screw (5) and a limiting multi-faceted hole in the middle of the limiting part (432).

6. The anti-deformation structure of a wind power tower barrel segment according to claim 1, characterized in that: The limiting of the rotating cylinder (42) within the hollow part in the middle of the turnbuckle (41) is achieved through the cooperation of a chute on the outer ring of the rotating cylinder (42) and a stop block (411) within the hollow part in the middle of the turnbuckle (41).

7. The anti-deformation structure of a wind power tower barrel segment according to claim 1, characterized in that: A connecting piece is fixed to the outer end of the connecting screw (5). The outer end of the connecting piece is fixed to a longitudinal flange (3) at the two longitudinal edges of the tower barrel segment body (1).

8. The anti-deformation structure of a wind power tower barrel segment according to claim 7, characterized in that: The connecting piece includes a U-shaped plate part (62) corresponding to the connecting flange (3) and a rod body connecting part (61) connected to the connecting screw (5). When the U-shaped plate part (62) is embedded in the longitudinal flange (3), the rod body connecting parts (61) corresponding to each other are coaxial between the two longitudinal edges of the tower barrel segment body (1).

9. The anti-deformation structure of a wind power tower barrel segment according to claim 8, characterized in that: The rod body connecting part (61) and the U-shaped plate part (62) are hinged by a longitudinal pin shaft.

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