Five-way structure, conversion section connecting structure comprising five-way structure and lattice type tower comprising five-way structure

Abstract

The utility model discloses a five-way structure, a conversion section connecting structure comprising the five-way structure and a lattice type tower. The five-way structure comprises a first connector, a second connector, a third connector and a fourth connector. The first connector and the second connector are obliquely arranged at the top of the fourth connector, and the first connector is located above the second connector. The two third connectors are arranged on the lower portion of the fourth connector side by side, and an included angle exists between the two third connectors. Connecting seams between the connectors are integrally formed in a pouring mode, and connecting holes are formed in the connecting end faces of the connectors. The utility model has the characteristics of compact structure, convenience in disassembly and assembly, high reliability and the like, and is favorable for improving the convenience in installation and maintenance of the high-power wind generating set.

Description

Technical Field

[0001] This utility model belongs to the technical field of conversion connection structure components, specifically relating to a five-way structure and a conversion section connection structure and a lattice tower including the five-way structure. Background Technology

[0002] In recent years, with the development of the wind power industry, the height of wind turbine towers has gradually increased. As an effective solution for low wind speed and high wind shear areas, the conversion section connection structure and lattice tower are being used more and more widely.

[0003] The lower part of the lattice tower consists of a truss structure, the middle structure is a transition section, and the upper part consists of a traditional conical tower. The transition section, as the middle transition structure, is crucial in the design and needs to meet various functional and performance requirements such as strength, installation, transportation, and maintenance.

[0004] The existing tower transition section consists of a central tower column, upper and lower diagonal bracing members, and a bottom five-way connector. However, the existing bottom five-way connector is mainly composed of forged flanges and welded steel plates, which presents the following problems:

[0005] 1) The bottom bracket and the strut need to be connected by flange bolts, which makes installation and maintenance quite difficult;

[0006] 2) The five-way connector adopts a flange and steel plate welded structure, which has many welds, is difficult to weld, and has a high risk of welding quality.

[0007] 3) The number of forged flanges in the five-way connector is relatively large, resulting in high material costs;

[0008] 4) The connection surfaces between the joints in the five-way connector are welded. The welding space is limited, the welding is difficult, and the weld quality risk is high. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a compact, easy-to-assemble and disassemble, and highly reliable five-way structure, as well as a transition section connection structure and a lattice tower including the five-way structure, in order to address the shortcomings of the existing technology.

[0010] To achieve the above objectives, the present invention may adopt the following technical solution:

[0011] A five-way connector structure includes: a first connector, a second connector, a third connector, and a fourth connector; the first connector and the second connector are both inclinedly disposed on the top of the fourth connector, and the first connector is located above the second connector; two third connectors are disposed side by side at the bottom of the fourth connector, and there is an included angle between the two third connectors; the connecting seams between each connector are integrally cast, and each connector has a connecting hole on its connecting end face.

[0012] As a further improvement of this utility model, the connecting end faces of the first connector, the second connector and the third connector all face the same side of the bottom bracket structure.

[0013] As a further improvement of this utility model, the first connector, the second connector, the third connector and the fourth connector are all formed by casting process.

[0014] As a further improvement of this utility model, the connecting hole is an internally threaded hole.

[0015] As a general technical concept, this utility model also provides a transition section connection structure, including a central tower column, an upper diagonal brace, a horizontal cross brace, and the aforementioned five-way connector structure. One end of the upper diagonal brace is connected to the central tower column, and the other end of the upper diagonal brace is connected to the first connector. Both ends of the horizontal cross brace are respectively connected to the third connectors of two adjacent five-way connector structures.

[0016] As a further improvement of this utility model, it also includes a lower inclined support rod, one end of which is connected to the central tower column, and the other end of which is connected to the second joint.

[0017] As a further improvement of this utility model, the connecting end face of the upper inclined brace, the connecting end face of the lower inclined brace, and the connecting end face of the horizontal cross brace are all provided with mounting holes corresponding to the connecting holes. Fasteners are screwed into the connecting holes and mounting holes to achieve a detachable connection between the upper inclined brace and the first joint, a detachable connection between the lower inclined brace and the second joint, and a detachable connection between the horizontal cross brace and the third joint.

[0018] As a further improvement of this utility model, the conversion section connection structure includes at least three five-way structures, and the multiple five-way structures are evenly distributed on the outer periphery of the central tower column.

[0019] As a general technical concept, this utility model also provides a lattice tower, including a truss structure, a conical tower and the aforementioned transition section connection structure, wherein the top of the transition section connection structure is connected to the conical tower and the bottom of the transition section connection structure is connected to the truss structure.

[0020] As a further improvement of this utility model, the top of the central tower column is connected to the conical tower frame, and the fourth joint is connected to the truss structure.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] 1. The five-way connector structure of this utility model is integrally cast at the joints between each joint, eliminating the need for welding and reducing the risk of welding quality problems. At the same time, each joint has a connection hole on its connection end face, which is used to connect to the device to be connected. This eliminates the need for end forged flanges, reducing related material costs. In addition, there is no need to consider welding flanges to joints, reducing the cumbersome welding process. The five-way connector structure of this utility model can meet the strength requirements of the device to be connected, provide user-friendly installation characteristics, facilitate maintenance, and is low in cost and higher in precision.

[0023] 2. The conversion section connection structure of this utility model includes the above-mentioned five-way structure, and therefore also has the above-mentioned advantages.

[0024] 3. The lattice tower of this utility model includes the above-mentioned transition section connection structure, and therefore also has the above-mentioned advantages. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the structural principle of the five-way connector in a specific embodiment of this utility model;

[0026] Figure 2 This is a schematic diagram illustrating the structural principle of the transition section connection structure in a specific embodiment of this utility model;

[0027] Figure 3 This is a partial cross-sectional view of the connection structure of the transition section in a specific embodiment of the present utility model.

[0028] Figure 4 This is a schematic diagram illustrating the structural principle of the lattice tower in a specific embodiment of this utility model;

[0029] Legend: 1. First joint; 2. Second joint; 3. Third joint; 4. Fourth joint; 5. Connecting hole; 6. Bolt; 100. Truss structure; 200. Transition section connection structure; 300. Conical tower; 201. Central tower column; 202. Upper diagonal brace; 203. Lower diagonal brace; 204. Horizontal cross brace. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0031] In the description of this utility model, it should be understood that the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0033] Example 1

[0034] like Figure 1 As shown, the five-way connector structure of this utility model includes: a first connector 1, a second connector 2, a third connector 3, and a fourth connector 4. The first connector 1 and the second connector 2 are both inclinedly positioned on top of the fourth connector 4, with the first connector 1 located above the second connector 2. Two third connectors 3 are arranged side-by-side at the bottom of the fourth connector 4, with an included angle between them. The connection seams between the first connector 1 and the second connector 2, between the first connector 1 and the second connector 2 and the fourth connector 4, between the third connector 3 and the fourth connector 4, and between the two third connectors 3 are all integrally cast. This integral casting ensures that the five connectors are tightly joined, forming a single integrated structure, thereby improving the structural strength and stability of the five-way connector structure. Multiple connection holes 5 are provided on the top connection faces of the first connector 1 and the second connector 2, the connection face of the third connector 3, and the bottom connection face of the fourth connector 4. Fasteners are screwed into the connection holes 5 to connect and fix the five-way connector structure to the device to be connected. It can be understood that the inclination angles of the first connector 1 and the second connector 2, as well as the included angle between the two third connectors 3, can be set according to the installation requirements of the device to be connected to achieve a precise connection.

[0035] In this embodiment, the joints between each connector are integrally cast, eliminating the need for welding and reducing the risk of welding quality issues. Simultaneously, each connector has a connection hole on its end face, allowing connection to the device to be connected. This eliminates the need for end-forged flanges, reducing material costs. Furthermore, the elimination of welding between flanges and connectors simplifies the welding process. This invention's five-way connector structure meets the strength requirements of the connected device while providing user-friendly installation and maintenance, and is also cost-effective and highly precise.

[0036] In this embodiment, the first connector 1, the second connector 2, the third connector 3, and the fourth connector 4 are all formed by casting, while the connecting end faces and connecting holes 5 of the five connectors are machined to ensure installation and connection accuracy. Figure 1 As shown, the connection faces of the first connector 1, the second connector 2, and the third connector 3 all face the same side of the bottom bracket structure to better meet the installation requirements of the wind turbine tower.

[0037] In this embodiment, the connecting hole 5 is an internally threaded hole. The bottom bracket structure and the device to be connected can be connected by threaded bolts, which is convenient to operate and provides a reliable connection without the need to consider deformation and stress relief caused by welding.

[0038] Example 2

[0039] like Figure 2 and Figure 3 As shown, the transition section connection structure of this utility model includes a central tower column 201, an upper diagonal brace 202, a lower diagonal brace 203, a horizontal cross brace 204, and the five-way connector structure in Embodiment 1. The upper end of the upper diagonal brace 202 is connected to the central tower column 201, and the lower end of the upper diagonal brace 202 is connected to the first connector 1; the upper end of the lower diagonal brace 203 is connected to the central tower column 201, and the lower end of the lower diagonal brace 203 is connected to the second connector 2; both ends of the horizontal cross brace 204 are respectively connected to the third connectors 3 of two adjacent five-way connector structures to form a transition section connection structure with a reliable connection and high support strength. It can be understood that the connection between the upper diagonal brace 202, the lower diagonal brace 203 and the central tower column 201 can be achieved through flange connection or by welding fixation.

[0040] Furthermore, such as Figure 3 As shown, the connecting end face of the upper inclined strut 202, the connecting end face of the lower inclined strut 203, and the connecting end face of the horizontal cross strut 204 are all provided with threaded mounting holes corresponding to the connecting hole 5. Bolts 6 are screwed into the connecting hole 5 and the threaded mounting holes to achieve a detachable connection between the upper inclined strut 202 and the first joint 1, a detachable connection between the lower inclined strut 203 and the second joint 2, and a detachable connection between the horizontal cross strut 204 and the third joint 3.

[0041] like Figure 2 As shown, the transition section connection structure includes three five-way connectors, which are evenly distributed around the outer periphery of the central tower column 201 at a 120° angle. In other embodiments, more than three five-way connectors may be provided around the outer periphery of the central tower column 201. These five-way connectors connect each support member to the central tower column 201 to form a whole, thereby obtaining a firmly supported transition section connection structure.

[0042] Example 3

[0043] like Figure 4 As shown, the lattice-type tower of this utility model includes a truss structure 100, a conical tower 300, and a transition section connecting structure 200 as described in Embodiment 2. The top of the transition section connecting structure 200 is connected to the conical tower 300, and the bottom of the transition section connecting structure is connected to the truss structure 100. A wind turbine can be installed on the top of the conical tower 300.

[0044] Specifically, the top of the central tower column 201 is connected to the conical tower 300, and the fourth joint 4 is connected to the truss structure 100, thus realizing the connection between the transition section connection structure 200, the truss structure 100, and the conical tower 300, forming a lattice tower that supports the wind turbine.

[0045] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the spirit and technical essence of the present invention. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the technical solutions of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A five-way connector structure, characterized in that, include: The first joint (1), the second joint (2), the third joint (3), and the fourth joint (4) are arranged at an angle on the top of the fourth joint (4), with the first joint (1) located above the second joint (2); the two third joints (3) are arranged side by side at the bottom of the fourth joint (4), and there is an included angle between the two third joints (3); the connecting seam between each joint is integrally cast, and each joint has a connecting hole (5) on its connecting end face.

2. The five-way connector structure according to claim 1, characterized in that, The connection faces of the first connector (1), the second connector (2) and the third connector (3) all face the same side of the bottom bracket structure.

3. The five-way connector structure according to claim 1, characterized in that, The first connector (1), the second connector (2), the third connector (3) and the fourth connector (4) are all formed by casting.

4. The five-way connector structure according to any one of claims 1 to 3, characterized in that, The connecting hole (5) is an internal threaded hole.

5. A transition section connection structure, characterized in that, It includes a central tower column (201), an upper diagonal brace (202), and a horizontal cross brace (204) and a five-way structure as described in any one of claims 1 to 4. One end of the upper diagonal brace (202) is connected to the central tower column (201), and the other end of the upper diagonal brace (202) is connected to the first joint (1). Both ends of the horizontal cross brace (204) are respectively connected to the third joints (3) of two adjacent five-way structures.

6. The transition section connection structure according to claim 5, characterized in that, It also includes a lower diagonal brace (203), one end of which is connected to the central tower column (201), and the other end of which is connected to the second joint (2).

7. The transition section connection structure according to claim 6, characterized in that, The connecting end face of the upper inclined strut (202), the connecting end face of the lower inclined strut (203), and the connecting end face of the horizontal cross strut (204) are all provided with mounting holes corresponding to the connecting hole (5). Fasteners are screwed into the connecting hole (5) and the mounting hole to achieve a detachable connection between the upper inclined strut (202) and the first joint (1), a detachable connection between the lower inclined strut (203) and the second joint (2), and a detachable connection between the horizontal cross strut (204) and the third joint (3).

8. The transition section connection structure according to claim 5, characterized in that, The transition section connection structure includes at least three five-way structures, and the multiple five-way structures are evenly distributed on the outer periphery of the central tower column (201).

9. A lattice-type tower, characterized in that, It includes a truss structure (100), a conical tower (300), and a transition section connection structure as described in any one of claims 5 to 8, wherein the top of the transition section connection structure is connected to the conical tower (300), and the bottom of the transition section connection structure is connected to the truss structure (100).

10. The lattice tower according to claim 9, characterized in that, The top of the central tower column (201) is connected to the conical tower (300), and the fourth joint (4) is connected to the truss structure (100).

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