A wind power mixed tower drum joint connecting device

Abstract

The utility model relates to wind power tower technology field especially is a kind of wind power mixed tower tower section connection device, including connecting piece, the connecting piece is used to splice and assemble several pipe pieces into tower section, the inner wall surface of the pipe piece is equipped with blind hole;The connecting piece includes intermediate pole, two fixed cylinders and two nuts, the fixed cylinder and its corresponding blind hole are communicated;The outer circumferential surface of the fixed cylinder is provided with connecting thread, first clamping plate and second clamping plate are all connected on fixed cylinder by connecting thread thread, and the clamping groove is formed between the first clamping plate and second clamping plate;The reinforcement inside the pipe piece passes through clamping groove, and is clamped by the first clamping plate and second clamping plate, and the relative position between fixed cylinder and reinforcement is adjusted by rotating first clamping plate and second clamping plate;When installing, one end of intermediate pole extends to the inside of blind hole through fixed cylinder and is fixed by nut.The utility model significantly reduces the positioning difficulty and connection difficulty between two pipe pieces.

Description

Technical Field

[0001] This utility model relates to the field of wind power technology, specifically to a wind power hybrid tower section connection device. Background Technology

[0002] In the structural system of a hybrid wind turbine tower (referred to as "hybrid tower"), the connection of the tower segments is the core link that determines the overall structural stability, load-bearing capacity, and safe service life. Hybrid towers typically combine the advantages of concrete (or reinforced concrete) and steel materials. Their tower segments often adopt a segmented prefabricated design (such as concrete segments or steel-concrete composite segments), and modular assembly is achieved through high-precision connection technology. This reduces the difficulty of transportation and hoisting, and can adapt to the complex operating conditions of different wind farms.

[0003] For the concrete tower of a wind turbine hybrid tower, it is assembled and spliced ​​from multiple segments. Generally speaking, a section of the tower consists of four segments. The connection between the segments that make up the tower is the key link to ensure the safety, stability and durability of the tower structure.

[0004] Patent CN215566378U discloses a connection structure for prefabricated tower sections in a wind power hybrid tower. This connection structure uses embedded plates to fix the exposed plates and segments together. During installation, the segment assembly is completed by fixing two corresponding exposed plates together. Although this method does not weaken or damage the connection parts, it still has the following shortcomings in use:

[0005] Because the segments are quite heavy, for example, some segments weigh 4-6 tons, the assembly of the segments requires the use of a crane to align the two segments. When using the connection method described above, each pair of exposed plates must be aligned before the connection can be made. For segments of such weight, the lack of an auxiliary positioning structure makes this extremely difficult. Utility Model Content

[0006] The purpose of this utility model is to provide a wind power hybrid tower section connection device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A wind power hybrid tower section connection device includes a connector for splicing and assembling several segments into a tower, wherein blind holes are provided on the inner wall surface of the segments.

[0009] The connector includes an intermediate rod, two fixed cylinders and two nuts, and the fixed cylinders are connected to their corresponding blind holes;

[0010] The outer circumferential surface of the fixed cylinder is provided with connecting threads, and the first clamping plate and the second clamping plate are both threadedly connected to the fixed cylinder through connecting threads, and a clamping groove is formed between the first clamping plate and the second clamping plate.

[0011] The steel bars inside the segment pass through the clamping groove and are clamped by the first clamping plate and the second clamping plate. The relative position between the fixing cylinder and the steel bars can be adjusted by rotating the first clamping plate and the second clamping plate.

[0012] During installation, one end of the intermediate rod is passed through the fixing cylinder and extended into the blind hole and fixed with a nut. The other end of the intermediate rod plays a positioning role when the two tube segments are spliced.

[0013] Preferably, at least two of the steel bars pass through the clamping groove, and the steel bars are located on both sides of the fixed cylinder.

[0014] Preferably, the intermediate rod includes two rods that are coaxially fixedly connected, and studs are coaxially fixed on the opposite end faces of the two rods, with the nut and studs being matched.

[0015] Preferably, the intermediate rod further includes two frustum sections, the large-diameter ends of the two frustum sections are coaxially fixedly connected, and the two rod bodies are respectively coaxially fixedly connected to the small-diameter ends of the two frustum sections;

[0016] One end of the fixed cylinder has a conical hole corresponding to the frustum portion.

[0017] Preferably, the inner surface of the tapered hole is provided with a locking groove, and the outer periphery of the connection position of the two frustum portions is fixed with a locking protrusion.

[0018] Preferably, one end of the nut is fixedly connected to a washer, the inner diameter of the washer being larger than the diameter of the rod body, and the inner diameter of the washer being smaller than the outer diameter of the fixed cylinder.

[0019] Preferably, the connector, the first clamping plate, and the second clamping plate are all made of stainless steel.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention features a connector consisting of a central rod, two fixed cylinders, and two nuts. When connecting two segments, one end of the central rod is first passed through one of the fixed cylinders and then locked in place with the nut, thus fixing the central rod to one of the segments. At this point, the other end of the central rod protrudes from the side of one of the segments. When moving the other segment using a crane, the other end of the central rod can be used as a positioning end. Combined with the other fixed cylinder, precise positioning between the two segments can be achieved. Finally, the other nut is tightened at the other end of the central rod, significantly reducing the difficulty of positioning and connecting the two segments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the tower section connecting device of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the intermediate rod, nut, first clamping plate and second clamping plate of this utility model;

[0025] Figure 4 This is an exploded structural diagram of the intermediate rod, fixed cylinder, and nut of this utility model.

[0026] In the diagram: 1. Segment; 2. Tower; 3. Blind hole; 4. Connector; 5. Reinforcing bar; 6. Intermediate rod; 7. Fixing cylinder; 8. Nut; 9. Stud; 10. Rod body; 11. Frustum; 12. Locking protrusion; 13. Connecting thread; 14. Locking groove; 15. Washer ring; 16. First clamping plate; 17. Second clamping plate; 18. Clamping groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-4 This utility model provides a technical solution:

[0029] A wind power hybrid tower section connection device includes a connector 4, which is used to splice and assemble several pipe segments 1 into a tower 2. In this embodiment, as shown in the figure, each tower section is assembled and spliced ​​from four pipe segments 1. The number of connectors 4 between each two adjacent pipe segments 1 is not limited here, for example, it can be six or nine.

[0030] In this utility model, a blind hole 3 is provided on the inner wall surface of the tube segment 1; the blind hole 3 is located near the joint between two adjacent tube segments 1; the connecting member 4 includes a middle rod 6, two fixing cylinders 7 and two nuts 8, the two fixing cylinders 7 are respectively fixed in the two adjacent tube segments 1, and the fixing cylinder 7 is connected to the corresponding blind hole 3, that is, the fixing cylinder 7 is located between the blind hole 3 and the joint between the two adjacent tube segments 1; in this way, the two ends of the middle rod 6 can pass through the two fixing cylinders 7 and be threadedly connected to the two nuts 8, thereby achieving the technical purpose of fixing the two tube segments 1 together.

[0031] During installation, one end of the intermediate rod 6 is passed through the fixing cylinder 7 and extended into the blind hole 3 and fixed by the nut 8. The other end of the intermediate rod 6 plays a positioning role when the two tube segments 1 are spliced. Specifically, for example, the two fixing cylinders 7 included in the connector 4 can be positioned as the left fixing cylinder and the right fixing cylinder, and the two segments 1 to be assembled can be divided into the left segment and the right segment. The left fixing cylinder is fixedly connected to the left segment, and the right fixing cylinder is fixedly connected to the right segment. During installation, the left end of the intermediate rod 6 is inserted through the left fixing cylinder and then the left end of the intermediate rod 6 is locked and fixed with the nut 8, so that the intermediate rod 6 is fixed together with the left segment. At this time, the right end of the intermediate rod 6 protrudes from the side of the left segment, so the right end of the intermediate rod 6 can be used as the positioning end. Then, the right segment can be lifted by the crane and moved to the left segment. Since the right end of the intermediate rod 6 is the positioning end, the precise positioning between the two segments 1 can be achieved by inserting the right end of the intermediate rod 6 into the right fixing cylinder. After completion, the other nut 8 is tightened to the right end of the intermediate rod 6 to achieve the fixed connection between the two segments 1.

[0032] In the above solution, by setting the connector 4 to consist of a middle rod 6, two fixing cylinders 7 and two nuts 8, when connecting two segments 1, one end of the middle rod 6 is first passed through one of the fixing cylinders 7 and then locked and fixed by the nut 8, so that the middle rod 6 is fixedly connected to one of the segments 1. At this time, the other end of the middle rod 6 protrudes from the side of one of the segments 1. Then, when moving the other segment 1 with a crane, the other end of the middle rod 6 can be used as the positioning end. With the other fixing cylinder 7, the precise positioning between the two segments 1 can be achieved. Finally, the other nut 8 is tightened at the other end of the middle rod 6, which significantly reduces the positioning difficulty and connection difficulty between the two segments 1.

[0033] The intermediate rod 6 includes two rods 10 that are coaxially fixedly connected. Studs 9 are coaxially fixed on the far ends of the two rods 10, and nuts 8 are matched with studs 9. Furthermore, the intermediate rod 6 also includes two frustums 11. The large-diameter ends of the two frustums 11 are coaxially fixedly connected, and the two rods 10 are coaxially fixedly connected to the small-diameter ends of the two frustums 11 respectively. One end of the fixing cylinder 7 is provided with a tapered hole corresponding to the frustum 11. The setting of the tapered hole here reduces the difficulty of inserting the studs 9 and the fixing cylinder 7, and further reduces the positioning difficulty and connection difficulty between the two tube segments 1.

[0034] In this embodiment, a locking groove 14 is provided on the inner surface of the tapered hole, and a locking protrusion 12 is fixed on the outer periphery of the connection position of the two frustum portions 11. The locking protrusion 12 cooperates with the locking groove 14 to prevent the intermediate rod 6 from rotating together when the nut 8 is tightened.

[0035] A washer 15 is fixedly connected to one end of the nut 8. The inner diameter of the washer 15 is larger than the diameter of the rod 10, and the inner diameter of the washer 15 is smaller than the outer diameter of the fixed cylinder 7.

[0036] The outer circumferential surface of the fixed cylinder 7 is provided with connecting threads 13. The first clamping plate 16 and the second clamping plate 17 are both threadedly connected to the fixed cylinder 7 through the connecting threads 13. In this embodiment, the first clamping plate 16 and the second clamping plate 17 are both annular, and a clamping groove 18 is formed between the first clamping plate 16 and the second clamping plate 17. The clamping groove 18 is also annular. The reinforcing bar 5 inside the pipe segment 1 passes through the clamping groove 18 and is clamped by the first clamping plate 16 and the second clamping plate 17. In addition, the relative position between the fixed cylinder 7 and the reinforcing bar 5 can be adjusted by rotating the first clamping plate 16 and the second clamping plate 17. That is, the position of the fixed cylinder 7 inside the pipe segment 1 can be adjusted to ensure that the end of the fixed cylinder 7 away from the blind hole 3 does not protrude from the side of the pipe segment 1. The advantage of this setting is that no matter how much error there is in the position of the reinforcing bar 5, the position of the fixed cylinder 7 can be adjusted to a suitable position. Furthermore, the first clamping plate 16 and the second clamping plate 17 can increase the connection strength between the fixed cylinder 7, the reinforcing bar 5, and the concrete.

[0037] At least two reinforcing bars 5 pass through the clamping groove 18. In this embodiment, two reinforcing bars 5 are used as an example for illustration. As can be seen from the figure, the two reinforcing bars 5 are located on both sides of the fixing cylinder 7, which makes the fixing cylinder 7 uniformly stressed and has good stability.

[0038] The connector 4, the first clamping plate 16, and the second clamping plate 17 are made of metal, such as stainless steel.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind power hybrid tower section connecting device, comprising a connecting piece for splicing several pipe pieces to assemble a tower, characterized in that, Blind holes are provided on the inner wall surface of the tube segment; The connector includes an intermediate rod, two fixed cylinders and two nuts, and the fixed cylinders are connected to their corresponding blind holes; The outer circumferential surface of the fixed cylinder is provided with connecting threads, and the first clamping plate and the second clamping plate are both threadedly connected to the fixed cylinder through connecting threads, and a clamping groove is formed between the first clamping plate and the second clamping plate. The steel bars inside the segment pass through the clamping groove and are clamped by the first clamping plate and the second clamping plate. The relative position between the fixing cylinder and the steel bars can be adjusted by rotating the first clamping plate and the second clamping plate. During installation, one end of the intermediate rod is passed through the fixing cylinder and extended into the blind hole and fixed with a nut. The other end of the intermediate rod plays a positioning role when the two tube segments are spliced.

2. The wind power hybrid tower section connecting device according to claim 1, characterized in that, At least two of the aforementioned reinforcing bars pass through the clamping groove, and the reinforcing bars are located on both sides of the fixed cylinder.

3. The wind power hybrid tower section connecting device according to claim 1, characterized in that, The intermediate rod includes two rods that are coaxially fixedly connected. Studs are coaxially fixed on the opposite end faces of the two rods, and the nuts and studs are matched.

4. The wind power hybrid tower section connecting device according to claim 3, characterized in that, The intermediate rod also includes two frustum sections, the large-diameter ends of the two frustum sections are coaxially and fixedly connected, and the two rod bodies are respectively coaxially and fixedly connected to the small-diameter ends of the two frustum sections. One end of the fixed cylinder has a conical hole corresponding to the frustum portion.

5. A wind power hybrid tower section connecting device according to claim 4, characterized in that, The inner surface of the tapered hole is provided with a locking groove, and the outer periphery of the connection position of the two frustums is fixed with a locking protrusion.

6. The wind power hybrid tower section connecting device of claim 3, wherein, One end of the nut is fixedly connected to a washer, the inner diameter of which is larger than the diameter of the rod and smaller than the outer diameter of the fixed cylinder.

7. The wind power hybrid tower section connecting device of claim 1, wherein, The connector, the first clamping plate, and the second clamping plate are all made of stainless steel.

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