Fastening connecting piece for wind power tower drum and ground foundation

Abstract

The utility model relates to the technical field of wind power tower drum installation, in particular to a fastening connecting piece for a wind power tower drum and a ground foundation, which comprises fastening structures and connecting structures, a tower body is fixedly connected with the ground foundation through the fastening structures, at least two connecting structures are further arranged on the periphery of the tower body, and the connecting structures are connected with the tower body through the fastening structures. The connecting structure is provided with two connecting ends, and the connecting ends are respectively connected with the periphery of the tower body and the top of the ground foundation through connecting pieces; wherein the tower body and the ground foundation are both connected with the connecting piece through a mounting seat, a quick release assembly is arranged between the mounting seat and the connecting piece, the quick release assembly is used for quickly unlocking the connecting piece, and the connecting structure tensions steel cables at the two ends in the mode that the connecting seat is rotated to drive the supporting pieces at the two ends to move relatively. And then the connecting stability between the tower body and the ground foundation is further improved, and the pair of nut semi-rings can be separated by unlocking the second locking piece.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine tower installation technology, and in particular to fastening connections between wind turbine towers and ground foundations. Background Technology

[0002] The wind turbine tower is an important component of a wind turbine generator set. Its main function is to support the wind power generation equipment and ensure its stable operation. The wind turbine tower is located between the wind turbine generator set and the foundation ring, and plays a role in connection and support. It is usually made of steel and has a cylindrical structure.

[0003] The tower body needs to be fixed to the ground foundation using fastening connectors. For example, Chinese Patent Publication No. CN113819008A discloses a wind turbine tower bottom reinforcement structure, including two semi-circular reinforcement ribs that are in close contact with the tower surface. A fastening positioning sleeve is fitted on the top of each reinforcement rib for connecting them, and the fastening positioning sleeve is detachably connected to the reinforcement rib. Each reinforcement rib has a connecting groove with a reinforcement connecting hook, and several anchoring structures are evenly and detachably installed on the reinforcement connecting hook. This invention uses an assembly method to connect and fasten the reinforcement ribs, combined with the surrounding fixation of the fastening positioning sleeve, effectively fixing and positioning the reinforcement ribs. Simultaneously, the sealing and ventilation methods effectively reduce corrosion of the reinforcement ribs, significantly extending the service life of the tower bottom reinforcement structure. Furthermore, the fastening operation can be completed by unidirectional rotation of the reinforcement connector with a limiting nut, resulting in a simple structure and convenient operation.

[0004] In practice, the turnbuckle is connected to the tower body and the ground foundation through steel cables at two connection ends. Considering that the connection ends of the steel cables cannot be quickly separated from the tower body and the ground foundation after connection, it is not convenient to disassemble and replace the steel cables and turnbuckles later, which affects the assembly speed. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, which makes it inconvenient to disassemble and replace the steel cables and turnbuckles, and to propose a fastening connection between the wind turbine tower and the ground foundation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The design includes a fastening connection between the wind turbine tower and the ground foundation, comprising a fastening structure and a connecting structure. The tower body and the ground foundation are fixedly connected by the fastening structure. At least two connecting structures are also provided on the periphery of the tower body. Each connecting structure has two connecting ends, which are connected to the periphery of the tower body and the top of the ground foundation respectively through connecting parts.

[0008] The tower body and the ground foundation are both connected to the connector via mounting bases. A quick-release assembly is provided between the mounting base and the connector, which is used to quickly unlock the connector.

[0009] Furthermore, the fastening structure includes multiple locking bolts. The bottom of the tower body abuts against the top of the ground foundation via a flange seat. The multiple locking bolts are pre-embedded in the ground foundation. The threaded end of the locking bolt passes through the flange seat and is threadedly connected to a fastening nut.

[0010] Furthermore, the connection structure includes a connecting seat and two steel cables. Support members are threaded to both ends of the connecting seat. The two steel cables are located at both ends of the connecting seat. The connecting members are fixedly connected to both ends of the steel cables. The two connecting members are rotatably connected to the support members and the mounting seat respectively through a first locking member.

[0011] Furthermore, the quick-release assembly includes a pair of nut half-rings, which are hinged to rotate between each other. Each pair of nut half-rings has a relief groove at its free end, and a second locking member is rotatably connected to it. The free end of the second locking member is placed in the relief groove, and the free end of the second locking member is also threadedly connected to a butterfly part.

[0012] Furthermore, when the pair of nut half-rings are closed, their inner rings have internal threads that are adapted to the end threads of the first locking member. The pair of nut half-rings are closed and fixed, and are threadedly connected to the threaded end of the first locking member through the internal threads.

[0013] Furthermore, the quick-release assembly also includes a base, which has an annular structure and is fixedly connected to the side of the mounting base. A pair of nut semi-rings are closed and concentrically arranged with the base, and one of the nut semi-rings is fixedly connected to the side of the base.

[0014] The advantages of the fastening connection between the wind turbine tower and the ground foundation proposed in this utility model are as follows: This utility model has a fastening structure and a connecting structure between the tower body and the ground foundation. The fastening structure fixes the tower body and the ground foundation together. After the connection, at least two connecting structures can be symmetrically arranged around the tower body. The connecting structure tightens the steel cables at both ends by rotating the connecting seat to drive the relative movement of the support members at both ends, thereby further improving the stability of the connection between the tower body and the ground foundation. In addition, a pair of nut half-rings can be separated by unlocking the second locking member. After the pair of nut half-rings are separated, the first locking member can be unlocked, and the connection between the steel cable and the tower body or the ground foundation can be directly pulled out, which is beneficial for the subsequent maintenance and replacement of the steel cable and turnbuckle. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the connection structure of this utility model;

[0017] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0018] Figure 4 This is a schematic diagram of the quick-release component of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the nut semi-ring of this utility model.

[0020] In the diagram: 1. Fastening structure; 11. Locking bolt; 2. Connecting structure; 21. Connecting seat; 22. Steel cable; 23. Support component; 24. First locking component; 3. Tower body; 4. Ground foundation; 5. Connecting component; 6. Mounting seat; 7. Quick-release assembly; 71. Nut half-ring; 72. Relief groove; 73. Second locking component; 74. Butterfly-shaped part; 75. Base. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5 The fastening connection between the wind turbine tower and the ground foundation includes a fastening structure 1 and a connecting structure 2. The tower body 3 and the ground foundation 4 are fixedly connected by the fastening structure 1. At least two connecting structures 2 are also provided on the periphery of the tower body 3. Each connecting structure 2 has two connecting ends, and its connecting ends are connected to the periphery of the tower body 3 and the top of the ground foundation 4 respectively through connecting parts 5.

[0023] The tower body 3 and the ground foundation 4 are both connected to the connector 5 via mounting base 6. A quick-release assembly 7 is provided between the mounting base 6 and the connector 5, which is used to quickly unlock the connector 5.

[0024] In some embodiments, the tower body 3 and the ground foundation 4 are connected and fixed by a fastening structure 1, while at least two connecting structures 2 are provided on the periphery of the tower body 3. The connecting structures 2 are used to further improve the stability of the connection between the tower body 3 and the ground foundation 4.

[0025] Furthermore, the fastening structure 1 includes a plurality of locking bolts 11. The bottom of the tower body 3 abuts against the top of the ground foundation 4 through a flange seat. The plurality of locking bolts 11 are pre-embedded in the ground foundation 4. The threaded end of the locking bolt 11 passes through the flange seat and is threadedly connected to a fastening nut.

[0026] Furthermore, the connecting structure 2 includes a connecting seat 21 and two steel cables 22. The two ends of the connecting seat 21 are threadedly connected to support members 23. The two steel cables 22 are located at both ends of the connecting seat 21. The connecting members 5 are fixedly connected to both ends of the steel cables 22. The two connecting members 5 are rotatably connected to the support members 23 and the mounting base 6 respectively through the first locking member 24.

[0027] It should be added that the specific structure between the connecting seat 21 and the two end support members 23 can refer to the turnbuckle structure in the prior art. One end of the two end support members 23 is threadedly connected to the connecting seat 21, and the other end is connected to the steel cable 22 through the first locking member 24.

[0028] In specific operation, the rotating connecting seat 21 drives the two end support members 23 to move relative to each other, and the support members 23 tighten and loosen the steel cable 22 during the relative movement of the steel cable 22.

[0029] Specifically, the first locking member 24 includes a bolt and a nut, and one end of the support member 23 and the connecting member 5 are both ring-shaped or hook-shaped structures for threading the bolt.

[0030] More specifically, the quick-release assembly 7 includes a pair of nut half-rings 71, which are hinged to rotate between each other. Each pair of nut half-rings 71 has a relief groove 72 at its free end, and a second locking member 73 is rotatably connected to it. The free end of the second locking member 73 is placed in the relief groove 72, and the free end of the second locking member 73 is also threadedly connected to a butterfly part 74.

[0031] In this embodiment, the second locking member 73 is a locking bolt, and the butterfly part 74 is a butterfly nut. One end of the locking bolt is provided with a spherical part, which is rotatably connected to one end of one of the nut half-rings 71 through the spherical part. The free end of the locking bolt is placed in the relief groove 72 by rotation. The butterfly part 74 is threadedly connected to the locking bolt and abuts against the side wall of the nut half-ring 71, so that the pair of nut half-rings 71 can be closed and the inner walls of the pair of nut half-rings 71 can form a complete thread line.

[0032] In general, when the pair of nut half rings 71 are closed, their inner rings have internal threads that are compatible with the end threads of the first locking member 24. The pair of nut half rings 71 are closed and fixed, and are threadedly connected to the threaded end of the first locking member 24 through the internal threads.

[0033] Finally, the quick-release assembly 7 also includes a base 75, which has an annular structure and is fixedly connected to the side of the mounting base 6. A pair of nut half-rings 71 are closed and concentrically arranged with the base 75, and one of the nut half-rings 71 is fixedly connected to the side of the base 75.

[0034] In specific operation, a pair of nut half rings 71 are closed and fixed, the first locking member 24 passes through the mounting base 6 and the connecting member 5, and then the first locking member 24 is rotated to make it threadedly connected with the internal threads of the pair of nut half rings 71. After the first locking member 24 is fixed, the steel cable 22 can be stretched and adjusted.

[0035] It should be noted that the threaded hole formed by the closing of a pair of nut half rings 71 is smaller than the central through hole of the base 75. Therefore, after separating the pair of nut half rings 71, the first locking member 24 can be directly pulled out through the central through hole of the base 75.

[0036] Working method: During operation, the tower body 3 rests against the top of the ground foundation 4 through the flange seat at the bottom. Then, the locking bolt 11, which is pre-embedded in the ground foundation 4, passes through the flange seat and is threaded to connect the nut, thereby realizing the connection and fixation between the tower body 3 and the ground foundation 4.

[0037] The two ends of the steel cable 22 are fixedly connected to the connectors 5. The two ends of the connectors 5 are fastened and rotated to the support 23 and the mounting base 6 respectively by the first locking member 24. Then, the rotating connector 21 drives the two ends of the support 23 to move relative to each other. During the relative movement of the support 23, the steel cable 22 is tightened and loosened.

[0038] Finally, when the steel cable 22 and the connecting seat 21 need to be disassembled and maintained, the butterfly part 74 can be rotated to separate it from the second locking part 73. After the second locking part 73 is disengaged from the relief groove 72, a pair of nut half rings 71 can be separated. At this time, the first locking part 24 can be pulled out directly, so that the connecting part 5 is separated from the mounting seat 6.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fastening connection between a wind turbine tower and its ground foundation, comprising a fastening structure (1) and a connecting structure (2), characterized in that: The tower body (3) is fixedly connected to the ground foundation (4) by the fastening structure (1). At least two connecting structures (2) are also provided around the tower body (3). The connecting structure (2) has two connecting ends, and its connecting ends are connected to the outer periphery of the tower body (3) and the top of the ground foundation (4) respectively by connecting parts (5). The tower body (3) and the ground foundation (4) are both connected to the connector (5) via mounting base (6). A quick-release assembly (7) is provided between the mounting base (6) and the connector (5), and the quick-release assembly (7) is used to quickly unlock the connector (5).

2. The fastening connection between the wind turbine tower and the ground foundation according to claim 1, characterized in that: The fastening structure (1) includes multiple locking bolts (11). The bottom of the tower body (3) abuts against the top of the ground foundation (4) through a flange seat. The multiple locking bolts (11) are embedded in the ground foundation (4). The threaded end of the locking bolt (11) passes through the flange seat and is threadedly connected to a fastening nut.

3. The fastening connection between the wind turbine tower and the ground foundation according to claim 1, characterized in that: The connection structure (2) includes a connecting seat (21) and two steel cables (22). The two ends of the connecting seat (21) are threaded with support members (23). The two steel cables (22) are located at both ends of the connecting seat (21). The connecting members (5) are fixedly connected to both ends of the steel cables (22). The two connecting members (5) are rotatably connected to the support members (23) and the mounting seat (6) respectively through the first locking member (24).

4. The fastening connection between the wind turbine tower and the ground foundation according to claim 3, characterized in that: The quick-release assembly (7) includes a pair of nut half-rings (71), which are hinged to rotate. Each pair of nut half-rings (71) has a relief groove (72) at its free end, and a second locking member (73) is rotatably connected to it. The free end of the second locking member (73) is placed in the relief groove (72), and the free end of the second locking member (73) is also threaded with a butterfly part (74).

5. The fastening connection between the wind turbine tower and the ground foundation according to claim 4, characterized in that: When the pair of nut half rings (71) are closed, their inner rings have internal threads that are compatible with the end threads of the first locking member (24). The pair of nut half rings (71) are closed and fixed, and are threadedly connected to the threaded end of the first locking member (24) through the internal threads.

6. The fastening connection between the wind turbine tower and the ground foundation according to claim 5, characterized in that: The quick-release assembly (7) also includes a base (75), which has an annular structure and is fixedly connected to the side of the mounting base (6). A pair of nut half-rings (71) are closed and concentrically arranged with the base (75), and one of the nut half-rings (71) is fixedly connected to the side of the base (75).

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