A connecting structure for precast tower barrel sections of a wind power hybrid tower

Abstract

The present invention discloses a prefabricated tower section connection structure for a wind power hybrid tower, comprising a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are in a Z-shaped structure, wherein a fixed shell is provided on one side of the first connecting plate embedded in a segment, and a fixed seat is fixedly connected to one side of the second connecting plate embedded in the segment, and a rotating cylinder is provided at the center of the fixed seat, and a rotating ring is fixedly connected to the surface of the rotating cylinder, and the rotating ring is rotatably connected to the fixed seat, and a connecting rod is threadedly connected to the center of the rotating cylinder, and a connecting block is provided at one end of the connecting rod, and a clamping hole is provided on the surface of the fixed shell, and the connecting block extends from the clamping hole into the fixed shell and is clamped with the fixed shell, and a fastening bolt assembly is provided on one side of the first connecting plate and the second connecting plate located outside the segment. The present invention relates to the field of wind power technology. This prefabricated tower section connection structure for a wind power hybrid tower solves the problem that most existing connectors adopt a unilateral connection and fixation method, and improves the overall stability after connection.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and in particular to a wind power hybrid tower prefabricated tower section connection structure. Background Art

[0002] A wind turbine tower is the mast of a wind turbine generator system. It primarily supports the wind turbine generator system and absorbs vibrations. Wind turbine towers are commonly constructed of all-steel or prefabricated concrete. Prefabricated concrete towers are mostly assembled in sections or segments. Segmented assembly means each section of the concrete tower is assembled from multiple prefabricated concrete components. Single concrete components are lightweight, compact, and easy to transport. Therefore, when installing a tower using segmented concrete components, adjacent prefabricated components must be connected. High-strength bolts are generally used for this purpose, requiring pre-embedded connectors within the prefabricated components. However, most existing connectors utilize a single-sided connection, where the bolts are located on the inside of the tower and sealed and bonded to the outside surface with rapid-hardening cement. Repeated loads can cause partial detachment of the rapid-hardening cement, impacting the load-bearing capacity and placing higher demands on the shear resistance of existing bolts. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention provides a wind turbine hybrid tower prefabricated tower section connection structure, which solves the problem that most existing connectors use a single-sided connection and fixation method, and improves the overall stability after connection.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wind power hybrid tower prefabricated tower section connection structure, including a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are in a Z-shaped structure, the first connecting plate is embedded in the slice and a fixed shell is provided on one side, the second connecting plate is embedded in the slice and a fixed seat is fixedly connected to the side, a rotating cylinder is provided in the center of the fixed seat, a rotating ring is fixedly connected to the surface of the rotating cylinder, the rotating ring is rotatably connected to the fixed seat, a connecting rod is threadedly connected to the center of the rotating cylinder, a connecting block is provided at one end of the connecting rod, a clamping hole is provided on the surface of the fixed shell, the connecting block extends from the clamping hole into the fixed shell and is clamped with the fixed shell, and a fastening bolt assembly is provided on the side of the first connecting plate and the second connecting plate located outside the slice.

[0005] Preferably, the first connecting plate is fixedly connected to a first connecting sleeve on one side located on the back side of the fixed shell, and the second connecting plate is fixedly connected to a second connecting sleeve on one side located on the back side of the fixing seat.

[0006] Preferably, a hemisphere is provided at one end of the connecting rod, the connecting block is movably connected to the hemisphere, and the surface of the connecting rod near the connecting block is set as a plane.

[0007] Preferably, a first mounting shell is provided on the top of the fixed seat, a second mounting shell is provided on the top of the first mounting shell, a connecting shaft is rotatably connected in the first mounting shell, a worm is provided on the surface of the connecting shaft, a worm wheel is fixedly connected to the surface of the rotating cylinder, and the worm is meshingly connected to the worm wheel.

[0008] Preferably, one end of the connecting shaft passes through the second connecting plate and is fixedly connected to a hexagonal head, a third mounting shell is provided on one side of the first mounting shell, and the connecting shaft is located inside the third mounting shell.

[0009] Preferably, the surface of one side of the first connecting plate outside the slice is provided with bumps, and the bumps are arranged in equidistant rectangles, and the surface of the one side of the second connecting plate outside the slice is provided with grooves adapted to the bumps.

[0010] Preferably, a first mounting hole adapted for a fastening bolt assembly is provided on a side surface of the first connecting plate located outside the segment, and a second mounting hole adapted for a fastening bolt assembly is provided on a side surface of the second connecting plate located outside the segment.

[0011] Preferably, the inner diameters of the first connecting sleeve and the second connecting sleeve are adapted to the diameter of the steel bars in the prefabricated tower section.

[0012] Preferably, the clamping hole is a T-shaped structure.

[0013] The present invention provides a prefabricated tower section connection structure for a wind turbine hybrid tower. It has the following beneficial effects:

[0014] A fixed shell is provided on one side of the first connecting plate embedded in the split sheet, and a second connecting plate is fixedly connected to a fixed seat on one side of the second connecting plate embedded in the split sheet, a rotating cylinder is provided at the center of the fixed seat, a connecting rod is threadedly connected to the center of the rotating cylinder, a connecting block is provided at one end of the connecting rod, a clamping hole is provided on the surface of the fixed shell, the connecting block extends into the fixed shell from the clamping hole and is clamped with the fixed shell, so that the first connecting plate and the second connecting plate are connected at the docking point, and then the fastening bolt assembly located on the outer side of the connecting plate is used to achieve re-tightening, thereby improving the stability of the overall connection; the protrusions provided on the surface of the first connecting plate and the grooves on the surface of the second connecting plate can reduce the shear force of the fastening bolt assembly, thereby ensuring the reliability of the connection using the fastening bolt assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic structural diagram of the first connecting plate of the present invention;

[0017] Figure 3 is a structural schematic diagram of the second connecting plate of the present invention;

[0018] Figure 4 This is a schematic diagram of the connection between the connecting block and the fixed housing of the present invention;

[0019] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle.

[0020] In the figure: 1-first connecting plate, 2-second connecting plate, 3-fixed shell, 4-fixed seat, 5-rotating cylinder, 6-rotating ring, 7-connecting rod, 8-connecting block, 9-fastening bolt assembly, 10-first connecting sleeve, 11-second connecting sleeve, 12-hemispherical body, 13-card hole, 14-first mounting shell, 15-second mounting shell, 16-connecting shaft, 17-worm, 18-worm gear, 19-hexagonal head, 20-third mounting shell, 21-bump, 22-groove, 23-first mounting hole, 24-second mounting hole. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5 The present invention provides a technical solution: a wind power hybrid tower prefabricated tower section connection structure, including a first connecting plate 1 and a second connecting plate 2, the first connecting plate 1 and the second connecting plate 2 are Z-shaped structures, and the bending part is a right angle. The first connecting plate 1 is embedded in the slice and a fixed shell 3 is provided on one side. One side of the fixed shell 3 is flush with the end face of the slice, ensuring that there is no obstruction after connection. The second connecting plate 2 is embedded in the slice and is fixedly connected to a fixed seat 4 on one side. A rotating cylinder 5 is provided at the center of the fixed seat 4. A rotating ring 6 is fixedly connected to the surface of the rotating cylinder 5. The rotating ring 6 is rotatably connected to the fixed seat 4. The center of the rotating cylinder 5 is threadedly connected to a connecting rod 7. The connecting rod 7 One end of the connecting rod 7 is provided with a connecting block 8, and one end of the connecting rod 7 is provided with a hemisphere 12. The connecting block 8 is movably connected to the hemisphere 12. The surface of the connecting rod 7 and the portion close to the connecting block 8 is set to a plane. The surface of the fixed shell 3 is provided with a clamping hole 13. The clamping hole 13 is a T-shaped structure. The connecting block 8 extends into the fixed shell 3 from the clamping hole 13 and is clamped with the fixed shell 3. During installation, the connecting block 8 is inserted into the fixed shell 3 from the upper side of the clamping hole 13 and then moved downward. The plane of the connecting rod 7 is fitted with the lower side of the clamping hole 13, which ensures that the connecting rod 7 does not rotate when the rotating cylinder 5 is rotated, and ensures that the connecting rod 7 can be extended and retracted, thereby realizing connection with the fixed shell 3 by utilizing the connecting block 8.

[0023] A fastening bolt assembly 9 is provided on one side of the first connecting plate 1 and the second connecting plate 2 located outside the segment. A first mounting hole 23 adapted for the fastening bolt assembly 9 is provided on the surface of one side of the first connecting plate 1 located outside the segment. A second mounting hole 24 adapted for the fastening bolt assembly 9 is provided on the surface of one side of the second connecting plate 2 located outside the segment. The fastening bolt assembly 9 adopts high-strength bolts to ensure the reliability of the connection.

[0024] The first connecting plate 1 is fixedly connected to a first connecting sleeve 10 on one side of the back of the fixed shell 3, and the second connecting plate 2 is fixedly connected to a second connecting sleeve 11 on one side of the back of the fixed seat 4. The inner diameters of the first connecting sleeve 10 and the second connecting sleeve 11 are adapted to the diameter of the steel bars in the prefabricated tower section. The first connecting sleeve 10 and the second connecting sleeve 11 are welded to the steel bars in their respective segments, ensuring the reliability of the fixation of the first connecting plate 1 and the second connecting plate 2.

[0025] A first mounting shell 14 is provided on the top of the fixed seat 4, and a second mounting shell 15 is provided on the top of the first mounting shell 14. The setting of the mounting shell ensures the internal cleanliness during the prefabrication process and ensures that it can be rotated and installed later. A connecting shaft 16 is rotatably connected in the first mounting shell 14, and a worm 17 is provided on the surface of the connecting shaft 16. A worm gear 18 is fixedly connected to the surface of the rotating cylinder 5. The worm 17 is meshed with the worm gear 18. One end of the connecting shaft 16 passes through the second connecting plate 2 and is fixedly connected to a hexagonal head 19. A third mounting shell 20 is provided on one side of the first mounting shell 14. The connecting shaft 16 is located inside the third mounting shell 20. By rotating the hexagonal head 19, the connecting shaft 16 can be driven to rotate, thereby driving the rotating cylinder 5 to rotate through the worm gear.

[0026] The first connecting plate 1 is provided with a protrusion 21 on one side surface outside the segment, and the protrusions 21 are arranged in an equidistant rectangular shape. The second connecting plate 2 is provided with a groove 22 adapted to the protrusion 21 on one side surface outside the segment. After installation, the protrusion 21 and the groove 22 engage with each other, thereby reducing the shear force on the fastening bolt assembly 9, improving the stability of the connection, and being able to withstand a certain load.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine hybrid tower prefabricated tower section connection structure, comprising a first connection plate (1) and a second connection plate (2), characterized in that: The first connecting plate (1) and the second connecting plate (2) are in a Z-shaped structure. A fixed shell (3) is provided on one side of the first connecting plate (1) embedded in the slice. A fixed seat (4) is fixedly connected to one side of the second connecting plate (2) embedded in the slice. A rotating cylinder (5) is provided at the center of the fixed seat (4). A rotating ring (6) is fixedly connected to the surface of the rotating cylinder (5). The rotating ring (6) is rotatably connected to the fixed seat (4). A connecting rod (7) is threadedly connected to the center of the rotating cylinder (5). A connecting block (8) is provided at one end of the connecting rod (7). A clamping hole (13) is provided on the surface of the fixed shell (3). The connecting block (8) extends from the clamping hole (13) into the fixed shell (3) and is clamped with the fixed shell (3). A fastening bolt assembly (9) is provided on one side of the first connecting plate (1) and the second connecting plate (2) located outside the slice. A hemisphere (12) is provided at one end of the connecting rod (7), the connecting block (8) is movably connected to the hemisphere (12), the surface of the connecting rod (7) near the connecting block (8) is set as a plane, and the clamping hole (13) is in a T-shaped structure.

2. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 1, characterized in that: The first connecting plate (1) is fixedly connected to a first connecting sleeve (10) on one side located on the back of the fixed housing (3), and the second connecting plate (2) is fixedly connected to a second connecting sleeve (11) on one side located on the back of the fixed seat (4).

3. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 1, characterized in that: A first mounting shell (14) is provided on the top of the fixing seat (4), a second mounting shell (15) is provided on the top of the first mounting shell (14), a connecting shaft (16) is rotatably connected in the first mounting shell (14), a worm (17) is provided on the surface of the connecting shaft (16), a worm wheel (18) is fixedly connected to the surface of the rotating cylinder (5), and the worm wheel (18) is meshed with the worm (17).

4. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 3, characterized in that: One end of the connecting shaft (16) passes through the second connecting plate (2) and is fixedly connected to a hexagonal head (19); a third mounting shell (20) is provided on one side of the first mounting shell (14); and the connecting shaft (16) is located inside the third mounting shell (20).

5. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 1, characterized in that: The first connecting plate (1) is provided with a protrusion (21) on one side of the surface outside the slice, and the protrusions (21) are arranged in an equidistant rectangular shape. The second connecting plate (2) is provided with a groove (22) on one side of the surface outside the slice that is adapted to the protrusion (21).

6. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 1, characterized in that: A first mounting hole (23) adapted for the fastening bolt assembly (9) is provided on a side surface of the first connecting plate (1) located outside the segment, and a second mounting hole (24) adapted for the fastening bolt assembly (9) is provided on a side surface of the second connecting plate (2) located outside the segment.

7. The wind turbine hybrid tower prefabricated tower section connection structure according to claim 2, characterized in that: The inner diameters of the first connecting sleeve (10) and the second connecting sleeve (11) are adapted to the diameter of the steel bars in the prefabricated tower section.

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