Lattice wind turbine tower

Abstract

The utility model provides a kind of lattice type wind generator tower, including tower column and foundation, tower column includes inclined section and vertical section, foundation includes anchor cage and foundation steel strand assembly;The axial direction of inclined section and the axial direction of vertical section form included angle, the inside of inclined section is equipped with tower column steel strand;The axial direction of anchor cage is parallel with the axial direction of vertical section, and the both ends of vertical section are connected with inclined section and anchor cage respectively;Foundation steel strand assembly includes foundation steel strand and the first fixed part and second fixed part connected in the both ends of foundation steel strand;The extension direction of foundation steel strand is parallel with tower column steel strand, and tower column steel strand is connected with the first fixed part, and anchor cage is connected with the second fixed part.The utility model designs the lower end of tower column into vertical section, so that anchor cage can also be installed vertically, reduce the radius of the pit for pre-buried anchor cage, reduce cost.Foundation steel strand assembly does not change the extension direction of tower column steel strand, guarantees the tension of tower column steel strand.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine generators, and in particular to a lattice-type wind turbine generator tower. Background Technology

[0002] With the rapid development of the wind power industry, obtaining higher-quality wind resources has become a key R&D objective in the development process, leading to increasingly higher requirements for the tower height of wind turbines. Under the dual pressure of economics and safety, lattice towers, with their advantages of high material utilization, high stress efficiency, highly industrialized construction, and a complete supply chain, have become a cost-effective tool for major turbine manufacturers to seize market share.

[0003] A lattice-type tower consists of tower columns and foundations. The tower columns are fixed to the ground by the foundations, and the interior of the tower columns contains diagonal steel strands that connect to the foundations. The connection between the tower columns and the foundations typically uses an anchor cage structure or a prestressed steel strand structure. The anchor cage structure consists of an upper anchor plate, a lower anchor plate, and anchor bolts, and is mainly used for steel tower foundation connections. The prestressed steel strand structure consists of sleeves and conversion devices, and is mostly used for concrete tower foundation connections.

[0004] For lattice towers that use anchor cage structures to fix tower columns, the steel strands inside the tower columns need to be riveted to the foundation. However, both the tower columns and the steel strands are set at an angle, and the anchor bolts that achieve the connection function cannot be bent. Therefore, the existing anchor cage structures are generally laid out with the same tilt angle as the tower columns.

[0005] In existing technologies, construction workers need to dig pits in the ground to pre-embed anchor bolt cage structures. Placing the anchor bolt cage structure at an angle will increase the excavation radius compared to placing it vertically, thus increasing costs. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the defect that the foundation of the lattice wind turbine tower in the prior art requires an excessively large excavation radius on the ground, which leads to increased costs, and to provide a lattice wind turbine tower.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] A lattice-type wind turbine tower includes a tower column and a foundation. The tower column includes an inclined section and a vertical section, and the foundation includes an anchor cage and a foundation steel strand assembly.

[0009] The axial direction of the inclined section and the axial direction of the vertical section form an angle. The interior of the inclined section is provided with tower column steel strands extending along the axial direction of the inclined section. The axial direction of the anchor cage is parallel to the axial direction of the vertical section. The first axial end of the vertical section is connected to the inclined section, and the second axial end of the vertical section is connected to the first axial end of the anchor cage.

[0010] The base steel strand assembly includes a base steel strand, a first fixing part and a second fixing part, wherein the first fixing part is connected to the first axial end of the base steel strand, and the second fixing part is connected to the second axial end of the base steel strand.

[0011] The extension direction of the foundation steel strand is parallel to the extension direction of the tower column steel strand, and both ends of the foundation steel strand pass through the anchor bolt cage; the tower column steel strand is connected to the first fixing part, and the second axial end of the anchor bolt cage is connected to the second fixing part.

[0012] In this solution, the above-mentioned setup combines two existing methods for connecting the tower and the foundation. By designing the lower end of the tower as a vertical section, the anchor cage connected to the vertical section can also be installed vertically, thereby reducing the radius of the pit used for pre-embedding the anchor cage and lowering costs. The foundation steel strand assembly connects to the inclined tower steel strand without changing the extension direction of the tower steel strand, ensuring the tension of the tower steel strand and improving the structural stability of the wind turbine.

[0013] Preferably, the first fixing part includes a first steel strand anchor plate and a first steel strand anchor head. The first steel strand anchor head is located on the side of the first steel strand anchor plate away from the second fixing part and abuts against the first steel strand anchor plate. One end of the foundation steel strand facing the tower column passes through the first steel strand anchor plate and the first steel strand anchor head. The first steel strand anchor head locks the first axial end of the foundation steel strand.

[0014] The extension direction of the tower column steel strand is perpendicular to the end face of the first steel strand anchor plate in its thickness direction, and the tower column steel strand is connected to the first steel strand anchor plate.

[0015] In this scheme, the first steel strand anchor head can restrict the movement of the first steel strand anchor plate toward the tower steel strand, and the tower steel strand in turn restricts the movement of the first steel strand anchor plate away from the tower steel strand, so as to fix the position of the first steel strand anchor plate, thereby ensuring the tension of the foundation steel strand assembly on the tower steel strand, ensuring the tension of the tower steel strand, and improving the structural stability of the wind turbine.

[0016] Preferably, the anchor cage includes a first anchor cage anchor plate, a second anchor cage anchor plate, and an anchor cage anchor bolt. The first anchor cage anchor plate and the second anchor cage anchor plate are spaced apart along the axial direction of the anchor cage, and the two ends of the anchor cage anchor bolt are respectively connected to the first anchor cage anchor plate and the second anchor cage anchor plate.

[0017] The first fixing part is located on the side of the first anchor cage anchor plate away from the second anchor cage anchor plate;

[0018] The lattice-type wind turbine tower also includes a first positioning component, which is fixed to the anchor plate of the first anchor cage. The first positioning component has a first positioning hole for the foundation steel strand to pass through, and the first positioning hole is through both ends of the anchor cage in the axial direction.

[0019] In this design, the first positioning hole is used to position the first axial end of the foundation steel strand assembly relative to the anchor cage, preventing the foundation steel strand from swaying during tensioning or casting, optimizing the force transmission path, reducing bending stress in the foundation steel strand, and improving structural reliability. The first positioning assembly is fixed to the anchor cage, eliminating the need for additional support structures and reducing material usage and weight.

[0020] Preferably, the first positioning component is disposed on the end face of the first anchor cage anchor plate away from the second anchor cage anchor plate;

[0021] The first positioning component includes a first positioning bracket, a second positioning bracket, a third positioning bracket, and a fourth positioning bracket;

[0022] The first positioning bracket and the second positioning bracket are spaced apart, and the third positioning bracket and the fourth positioning bracket are spaced apart. The two ends of the third positioning bracket are respectively connected to the first positioning bracket and the second positioning bracket, and the two ends of the fourth positioning bracket are respectively connected to the first positioning bracket and the second positioning bracket. The first positioning bracket, the second positioning bracket, the third positioning bracket and the fourth positioning bracket form the first positioning hole.

[0023] In this design, the spacing and connection method of the positioning brackets provide a rigid guide frame, ensuring the stability of the base steel strand under dynamic loads, preventing fretting wear, and extending service life. The design of multiple positioning brackets surrounding the first positioning hole is simple, low-cost, and easy to install.

[0024] Preferably, the second fixing part includes a second steel strand anchor plate and a second steel strand anchor head. The second steel strand anchor head is located on the side of the second steel strand anchor plate away from the first fixing part. The end of the foundation steel strand away from the tower column passes through the second steel strand anchor plate and the second steel strand anchor head. The second steel strand anchor head locks the second axial end of the foundation steel strand.

[0025] The anchor cage includes a first anchor cage anchor plate, a second anchor cage anchor plate, and an anchor cage anchor bolt. The first anchor cage anchor plate and the second anchor cage anchor plate are spaced apart along the axial direction of the anchor cage. The two ends of the anchor cage anchor bolt are respectively connected to the first anchor cage anchor plate and the second anchor cage anchor plate.

[0026] The vertical section is connected to the first anchor cage anchor plate, and the second steel strand anchor plate is connected to the second anchor cage anchor plate.

[0027] In this design, the second steel strand anchor head restricts the movement of the second steel strand anchor plate away from the tower column, and the second anchor cage anchor plate further restricts the movement of the second steel strand anchor plate towards the tower column, thereby fixing the position of the second steel strand anchor plate. This further ensures the tension of the foundation steel strand assembly on the tower column steel strand, guarantees the tensioning of the tower column steel strand, and improves the structural stability of the wind turbine.

[0028] Preferably, the second fixing part is located on the side of the second anchor cage anchor plate away from the first anchor cage anchor plate;

[0029] The lattice-type wind turbine tower also includes a second positioning component, which is fixed to the anchor plate of the second anchor cage. The second positioning component has a second positioning hole through which the foundation steel strand passes, and the second positioning hole is through both ends of the anchor cage in the axial direction.

[0030] In this design, the second positioning hole is used to position the second axial end of the foundation steel strand assembly relative to the anchor cage, preventing the foundation steel strand from swaying during tensioning or casting, optimizing the force transmission path, reducing bending stress in the foundation steel strand, and improving structural reliability. The second positioning assembly is fixed to the anchor cage, eliminating the need for additional support structures and reducing material usage and weight.

[0031] Preferably, the second positioning component includes a fifth positioning bracket and a sixth positioning bracket, which are spaced apart. The fifth positioning bracket, the sixth positioning bracket, and the portion of the second anchor cage anchor plate located between the fifth positioning bracket and the sixth positioning bracket form the second positioning hole.

[0032] In this solution, only two positioning brackets are needed to form the second positioning hole with the second anchor bolt cage anchor plate. The structure is simple and requires less material, which satisfies the positioning requirements and reduces the cost of parts.

[0033] Preferably, the second steel strand anchor plate and the second anchor cage anchor plate have a first gap in the axial direction of the anchor cage;

[0034] At least a portion of the second positioning component is disposed within the first gap, and the second positioning component abuts against the end face of the second steel strand anchor plate on the axial direction of the anchor cage away from the anchor plate of the second anchor cage.

[0035] In this design, the first gap allows the second positioning component to be embedded therein and abut against the second steel strand anchor plate, enabling the second positioning component to perform both positioning and support functions simultaneously, thus reducing the need for additional support components.

[0036] Preferably, the base steel strand assembly further includes a sleeve, which covers the outer periphery of the base steel strand and is disposed between the first steel strand anchor plate and the second steel strand anchor plate. The sleeve and the second steel strand anchor plate have a second gap in the axial direction of the anchor cage. The height of the second gap in the axial direction of the anchor cage is greater than or equal to the height of the first gap in the axial direction of the anchor cage.

[0037] In this solution, the above-mentioned arrangement is used to prevent interference between the sleeve and the second positioning component.

[0038] Preferably, the first steel strand anchor plate is provided with a first through hole for the tower steel strand to pass through, and the lattice wind turbine tower further includes a fastener, which is provided on the side of the first steel strand anchor plate facing the second steel strand anchor plate. The fastener includes a connecting section and an abutting section, and the abutting section is connected to the end of the connecting section facing the second steel strand anchor plate.

[0039] The fastener is provided with a second through hole for the tower column steel strand to pass through. The outer peripheral surface of the tower column steel strand abuts against the inner wall surface of the second through hole. The connecting section extends into the first through hole. The outer peripheral surface of the connecting section abuts against the inner wall surface of the first through hole. The end face of the abutting section away from the second steel strand anchor plate abuts against the end face of the first steel strand anchor plate facing the second steel strand anchor plate.

[0040] In this solution, the fasteners lock the tower steel strands onto the first steel strand anchor plate through an interference fit with the tower steel strands and the first steel strand anchor plate, making the connection method simple.

[0041] Preferably, the fastener includes a first fastener unit and a second fastener unit that are independent of each other, and the first fastener unit and the second fastener unit are spliced ​​together along the circumference of the fastener to form the second through hole.

[0042] In this solution, the first fastener unit and the second fastener unit can be spliced ​​together circumferentially on site, enabling rapid installation under conditions of no field of vision, reducing installation difficulty, and is especially suitable for narrow spaces, where only small operating holes need to be made on the vertical section.

[0043] Preferably, the abutting section of the first fastener unit has a first recess at one end facing the second steel strand anchor plate, and the abutting section of the second fastener unit has a second recess at one end facing the second steel strand anchor plate.

[0044] The lattice-type wind turbine tower also includes a locking component, which is located on the side of the fastener facing the second steel strand anchor plate. The locking component has a third through hole for the tower steel strand to pass through, and the outer peripheral surface of the tower steel strand abuts against the inner wall surface of the third through hole.

[0045] The locking member has a first mating part and a second mating part at the end away from the second steel strand anchor plate. The outer peripheral surface of the first mating part abuts against the inner wall surface of the first recess, and the outer peripheral surface of the second mating part abuts against the inner wall surface of the second recess.

[0046] In this solution, the locking element is used to fix the relative positions of the first fastener unit and the second fastener unit to ensure that the fastener formed by the first fastener unit and the second fastener unit can clamp the tower column steel strand.

[0047] Preferably, the first recess and the second recess form an annular recess, and the first mating portion and the second mating portion form an annular mating portion, wherein the annular mating portion is sandwiched between the outer peripheral surface of the tower column steel strand and the inner wall surface of the annular recess.

[0048] In this design, the recess and the mating part are designed as rings, which reduces the difficulty of alignment and improves installation efficiency. Furthermore, the ring-shaped mating part and the ring-shaped recess form a complete circular clamping area, ensuring that the tower column steel strands are coaxial with the fasteners and preventing eccentric loading.

[0049] The positive and progressive effects of this utility model are as follows: This utility model combines two existing methods for connecting the tower column and the foundation. By designing the lower end of the tower column as a vertical section, the anchor cage connected to the vertical section can also be installed vertically, thereby reducing the radius of the pit used for pre-embedding the anchor cage and lowering costs. The foundation steel strand assembly is connected to the inclined tower column steel strand without changing the extension direction of the tower column steel strand, ensuring the tension of the tower column steel strand and improving the structural stability of the wind turbine. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of the tower column and foundation in one embodiment of the present invention.

[0051] Figure 2 This is a partial structural diagram of the tower column and foundation in an embodiment of the present invention.

[0052] Figure 3 This is a schematic diagram of the structure of a basic steel strand according to an embodiment of the present invention.

[0053] Figure 4 This is a bottom view of the structure of the tower column and foundation in one embodiment of the present invention.

[0054] Figure 5 This is a schematic diagram of the structure of the tower steel strand and the first steel strand anchor plate in one embodiment of the present invention.

[0055] Explanation of reference numerals in the attached figures:

[0056] Tower Column 1

[0057] Inclined section 11

[0058] Vertical segment 12

[0059] 13 steel strands for tower columns

[0060] Basic 2

[0061] Anchor Cage 3

[0062] First anchor cage anchor plate 3

[0063] Second anchor cage anchor plate 32

[0064] Anchor cage anchor 33

[0065] Basic steel strand assembly 4

[0066] Basic steel strand 41

[0067] First fixing part 42

[0068] First steel strand anchor plate 421

[0069] First through hole 4211

[0070] First steel strand anchor head 422

[0071] Second fixing part 43

[0072] Second steel strand anchor plate 431

[0073] Second steel strand anchor head 432

[0074] Sleeve 5

[0075] First positioning component 6

[0076] First positioning hole 61

[0077] First positioning bracket 62

[0078] Second positioning bracket 63

[0079] Third positioning bracket 64

[0080] Fourth positioning bracket 65

[0081] Second positioning component 7

[0082] Second positioning hole 71

[0083] Fifth positioning bracket 72

[0084] Sixth positioning bracket 73

[0085] First gap 81

[0086] Second gap 82

[0087] Fastener 9

[0088] Second through hole 91

[0089] Connecting section 92

[0090] Section 93

[0091] First fastener unit 94

[0092] Second fastener unit 95

[0093] Locking component 10

[0094] Third through hole 101

[0095] First recess 102

[0096] Second recess 103

[0097] First Coordination Section 104

[0098] Second Coordination Unit 105 Detailed Implementation

[0099] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0100] like Figure 1 As shown in the figure, this embodiment discloses a lattice wind turbine tower, which includes a tower (not shown in the figure), a tower column 1 and a foundation 2.

[0101] The tower's axis is parallel to the vertical direction. The upper end of the tower connects to the wind turbine's drive chain, and the lower end connects to tower column 1. Tower column 1 is generally inclined relative to the horizontal plane. The upper end of tower column 1 connects to the tower, and the lower end connects to foundation 2. There are multiple tower columns 1, spaced apart circumferentially along the tower. The upper ends of all tower columns 1 are connected to the same tower, and the lower ends of each tower column 1 are individually connected to their corresponding foundation 2. Foundation 2 needs to be buried underground to ensure structural strength.

[0102] like Figure 1The tower column 1 includes an inclined section 11 and a vertical section 12. The upper end of the inclined section 11 is connected to the tower cylinder, and the lower end of the inclined section 11 is connected to the first axial end (i.e., the upper end) of the vertical section 12. The inclined section 11 is inclined relative to the horizontal plane, and the vertical section 12 is perpendicular to the horizontal plane. Specifically, the axis of the inclined section 11 forms an angle with the vertical plane, and the axis of the vertical section 12 is parallel to the vertical direction. The axial directions of the inclined section 11 and the vertical section 12 form an angle to convert the inclined axis of the tower column 1 into a vertical axis.

[0103] The inclined section 11 and the vertical section 12 can be formed by bending the same cylinder, or the inclined section and the vertical section 12 can be formed separately and then the two parts of the structure can be spliced ​​together by welding and other processes.

[0104] Furthermore, such as Figure 1 As shown, the foundation 2 includes an anchor cage 3, the axis of which is parallel to the axis of the vertical section 12. The second axial end (i.e., the lower end) of the vertical section 12 is connected to the first axial end (i.e., the upper end) of the anchor cage 3. The inclined section 11 and the vertical section 12 are fixed to the ground by the anchor cage 3.

[0105] Specifically, such as Figure 1 As shown, the anchor cage 3 includes a first anchor cage anchor plate 31, a second anchor cage anchor plate 32, and anchor cage anchors 33. The first anchor cage anchor plate 31 and the second anchor cage anchor plate 32 are spaced apart along the axial direction of the anchor cage 3. The first anchor cage anchor plate 31 is located above the second anchor cage anchor plate 32. The two ends of the anchor cage anchors 33 are connected to the first anchor cage anchor plate 31 and the second anchor cage anchor plate 32, respectively. A connecting flange is provided on the outer circumferential surface of the lower end of the vertical section 12. The vertical section 12 is placed on the first anchor cage anchor plate 31 and connected to the first anchor cage anchor plate 31 through the connecting flange.

[0106] Since the axis of the vertical section 12 is parallel to the vertical direction, the axis of the anchor cage 3 is also parallel to the vertical direction. This allows the anchor cage 3 to be installed vertically on the ground, reducing the radius of the pit used to embed the anchor cage 3, lowering costs, and improving economic efficiency. Specifically, the excavation radius of the pit can be reduced by L*tanθ, where L is the vertical distance between the first anchor cage anchor plate 31 and the second anchor cage anchor plate 32, and θ is the angle formed between the axis of the inclined section 11 and the horizontal plane.

[0107] like Figure 1 and Figure 2 As shown, both the inclined section 11 and the vertical section 12 are cylindrical components. The interior of the inclined section 11 is provided with tower steel strands 13 extending along the axial direction of the inclined section 11. The foundation 2 also includes a foundation steel strand assembly 4. The upper end of the foundation steel strand assembly 4 can extend into the interior of the tower column 1 to connect with the tower steel strands 13.

[0108] Specifically, such as Figures 1-3 As shown, the base steel strand assembly 4 includes a base steel strand 41, a first fixing part 42, a second fixing part 43, and a sleeve 5. The first fixing part 42 is connected to the first axial end (i.e., the upper end) of the base steel strand 41, and the second fixing part 43 is connected to the second axial end (i.e., the lower end) of the base steel strand 41. The sleeve covers the outer periphery of the base steel strand 41 and is disposed between the first fixing part 42 and the second fixing part 43 to protect the base steel strand 41.

[0109] The first fixing part 42 includes a first steel strand anchor plate 421 and a first steel strand anchor head 422. The first steel strand anchor head 422 is located on the side of the first steel strand anchor plate 421 away from the second fixing part 43 and abuts against the first steel strand anchor plate 421. The end of the foundation steel strand 41 facing the tower column 1 passes through the first steel strand anchor plate 421 and the first steel strand anchor head 422, and the first steel strand anchor head 422 locks the first axial end of the foundation steel strand 41. The second fixing part 43 includes a second steel strand anchor plate 431 and a second steel strand anchor head 432. The second steel strand anchor head 432 is located on the side of the second steel strand anchor plate 431 away from the first fixing part 42. The end of the foundation steel strand 41 away from the tower column 1 passes through the second steel strand anchor plate 431 and the second steel strand anchor head 432, and the second steel strand anchor head 432 locks the second axial end of the foundation steel strand 41. The sleeve is located between the first steel strand anchor plate 421 and the second steel strand anchor plate 431, and the sleeve can be made of materials such as PE (polyethylene).

[0110] like Figure 1 As shown, in this embodiment, the extension direction of the foundation steel strand 41 is parallel to the extension direction of the tower steel strand 13. Both ends of the foundation steel strand 41 pass through the anchor cage 3. The tower steel strand 13 is connected to the first fixing part 42, and the second axial end of the anchor cage 3 is connected to the second fixing part 43. The foundation steel strand assembly 4 is connected to the inclined tower steel strand 13 without changing the extension direction of the tower steel strand 13, ensuring the tension of the tower steel strand 13 and improving the structural stability of the wind turbine.

[0111] Specifically, such as Figure 1 As shown, the first fixing part 42 is located on the side of the first anchor cage anchor plate 31 away from the second anchor cage anchor plate 32, that is, both the first steel strand anchor plate 421 and the first steel strand anchor head 422 extend into the interior of the tower column 1. The extension direction of the tower column steel strand 13 is perpendicular to the end face of the first steel strand anchor plate 421 in its thickness direction. The tower column steel strand 13 is connected to the first steel strand anchor plate 421, and the second steel strand anchor plate 431 is connected to the second anchor cage anchor plate 32.

[0112] In this embodiment, the first steel strand anchor head 422 restricts the movement of the first steel strand anchor plate 421 toward the tower steel strand 13, and the tower steel strand 13 further restricts the movement of the first steel strand anchor plate 421 away from the tower steel strand 13, thereby fixing the position of the first steel strand anchor plate 421. The second steel strand anchor head 432 restricts the movement of the second steel strand anchor plate 431 away from the tower 1, and the second anchor cage anchor plate 32 further restricts the movement of the second steel strand anchor plate 431 toward the tower 1, thereby fixing the position of the second steel strand anchor plate 431. This embodiment, by limiting the axial ends of the foundation steel strand assembly 4, ensures the tension of the foundation steel strand assembly 4 on the tower steel strand 13, ensuring the tension of the tower steel strand 13, and improving the structural stability of the wind turbine.

[0113] This embodiment combines two existing methods for connecting the tower column 1 and the foundation 2. While ensuring the tension of the tower column steel strand 13, it reduces the radius of the pit used for pre-embedding the foundation 2, thereby reducing costs.

[0114] like Figure 4 As shown, the lattice-type wind turbine tower also includes a first positioning component 6 and a second positioning component 7. The first positioning component 6 and the second positioning component 7 are respectively located at the two ends of the axial direction of the foundation steel strand assembly 4 to further limit the position of the foundation steel strand assembly 4 relative to the anchor cage 3, prevent the foundation steel strand assembly 4 from swinging during tensioning or pouring, optimize the force transmission path, reduce the bending stress of the foundation steel strand 41, and improve the structural reliability.

[0115] like Figure 4 As shown, the first positioning component 6 is fixed to the anchor plate 31 of the first anchor cage. The first positioning component 6 has a first positioning hole 61 through which the foundation steel strand 41 passes. The first positioning hole 61 extends through both ends of the anchor cage 3 in the axial direction, and the outer peripheral surface of the sleeve 5 abuts against the inner wall surface of the first positioning hole 61. The first positioning hole 61 is used to position the first axial end of the foundation steel strand component 4 relative to the anchor cage 3, preventing the foundation steel strand 41 from swinging during tensioning or casting, optimizing the force transmission path, reducing the bending stress of the foundation steel strand 41, and improving structural reliability. The first positioning component 6 is fixed to the anchor cage 3, eliminating the need for additional support structures, thus reducing material usage and weight.

[0116] Specifically, the first positioning component 6 includes a first positioning bracket 62, a second positioning bracket 63, a third positioning bracket 64, and a fourth positioning bracket 65. The first positioning bracket 62 and the second positioning bracket 63 are spaced apart, as are the third positioning bracket 64 and the fourth positioning bracket 65. Both ends of the third positioning bracket 64 are connected to the first positioning bracket 62 and the second positioning bracket 63, respectively, and both ends of the fourth positioning bracket 65 are connected to the first positioning bracket 62 and the second positioning bracket 63, respectively. The first positioning bracket 62, the second positioning bracket 63, the third positioning bracket 64, and the fourth positioning bracket 65 form a first positioning hole 61. The spaced arrangement and connection method of the positioning brackets provide a rigid guide frame, ensuring that the foundation steel strand 41 remains stable under dynamic loads, preventing fretting wear of the foundation steel strand 41, and extending its service life. The design of multiple positioning brackets forming the first positioning hole 61 is simple, low-cost, and easy to install.

[0117] In other alternative embodiments, a small gap may exist between the outer peripheral surface of the sleeve 5 and the inner wall surface of the first positioning hole 61 to prevent excessive movement of the first axial end of the base steel strand assembly 4.

[0118] like Figure 4 As shown, the second positioning component 7 is fixed to the anchor plate 32 of the second anchor cage. The second positioning component 7 has a second positioning hole 71 through which the foundation steel strand 41 passes. The second positioning hole 71 is through both ends of the anchor cage 3 in the axial direction. The second positioning hole 71 is used to position the second axial end of the foundation steel strand component 4 relative to the anchor cage 3, preventing the foundation steel strand 41 from swinging during tensioning or casting, optimizing the force transmission path, reducing the bending stress of the foundation steel strand 41, and improving structural reliability. The second positioning component 7 is fixed to the anchor cage 3, eliminating the need for additional support structures, thus reducing material usage and weight.

[0119] Specifically, the second positioning component 7 includes a fifth positioning bracket 72 and a sixth positioning bracket 73, which are spaced apart. The fifth positioning bracket 72, the sixth positioning bracket 73, and the portion of the second anchor cage anchor plate 32 located between the fifth positioning bracket 72 and the sixth positioning bracket 73 form a second positioning hole 71. In this embodiment, only two positioning brackets are used to form the second positioning hole 71 with the second anchor cage anchor plate 32. The structure is simple and requires less material, which satisfies the positioning requirements while reducing the cost of parts.

[0120] In other alternative embodiments, the second positioning component 7 may also adopt, for example, the positioning structure consisting of four positioning brackets as in the first positioning component 6, or the first positioning component 6 may also adopt, for example, the positioning structure formed by two positioning brackets cooperating with the first anchor bolt cage anchor plate 31 as in the second positioning component 7. Preferably, the positioning hole size formed by at least one of the first positioning component 6 and the second positioning component 7 matches the outer circumferential size of the sleeve to effectively restrict the movement of the foundation steel strand assembly 4 on the horizontal plane.

[0121] In this embodiment, both the first positioning hole 61 and the second positioning hole 71 are formed by multiple structures, allowing for high flexibility in arrangement. In other alternative embodiments, the first positioning component 6 and / or the second positioning component 7 can also be a flat plate structure, and the first positioning hole 61 and / or the second positioning hole 71 can be a through hole directly machined on the flat plate.

[0122] In this embodiment, both the first positioning component 6 and the second positioning component 7 are located on the outside of the anchor cage 3. That is, the first positioning component 6 is located at the end of the first anchor cage anchor plate 31 away from the second anchor cage anchor plate 32, and the second positioning component 7 is located at the end of the second anchor cage anchor plate 32 away from the first anchor cage anchor plate 31. This facilitates the fixing of the first positioning component 6 and the second positioning component 7 on the anchor cage 3 and reduces the installation difficulty.

[0123] In other alternative embodiments, the first positioning component 6 and / or the second positioning component 7 may also be located in the area between the first anchor cage anchor plate 31 and the second anchor cage anchor plate 32, as long as the above-mentioned effect can be achieved.

[0124] Furthermore, such as Figure 1 and Figure 4 As shown, the second fixing part 43 is located on the side of the second anchor cage anchor plate 32 away from the first anchor cage anchor plate 31, that is, both the second steel strand anchor head 432 and the second steel strand anchor plate 431 are located on the side of the second anchor cage anchor plate 32 away from the first anchor cage anchor plate 31. The second steel strand anchor plate 431 and the second anchor cage anchor plate 32 have a first gap 81 in the axial direction of the anchor cage 3. The fifth positioning bracket 72 and the sixth positioning bracket 73 are located in the axial direction of the anchor cage 3 between the second anchor cage anchor plate 32 and the second steel strand anchor plate 431, and part of the structure of the fifth positioning bracket 72 and part of the structure of the sixth positioning bracket 73 are located within the first gap 81. The two ends of the portion of the fifth positioning bracket 72 and the portion of the sixth positioning bracket 73 located within the first gap 81 abut against the second anchor cage anchor plate 32 and the second steel strand anchor plate 431 in the axial direction of the anchor cage 3, respectively. The first gap 81 allows the second positioning component 7 to be embedded therein and abut against the second steel strand anchor plate 431, so that the second positioning component 7 can simultaneously perform the dual functions of positioning and support, reducing the need for additional support components.

[0125] Furthermore, the second steel strand anchor plate 431 and the second anchor cage anchor plate 32 are parallel to each other on one end face in the axial direction of the anchor cage 3, and both are parallel to the horizontal plane. Therefore, the fifth positioning bracket 72 and the sixth positioning bracket 73 can be selected from conventional flat plate structures, which are easy to process and have low cost. The second steel strand anchor plate 431 has a larger contact area with the second positioning component 7, resulting in better stability.

[0126] In other alternative embodiments, the second steel strand anchor plate 431 may also be positioned differently, for example, perpendicular to the extension direction of the base steel strand 41.

[0127] In this embodiment, only a portion of the second positioning components 7 are disposed within the first gap 81 to be sandwiched between the second steel strand anchor plate 431 and the second anchor cage anchor plate 32. In other alternative embodiments, it is also possible that all the second positioning components 7 are located within the first gap 81, for example, if the size of the second steel strand anchor plate 431 is designed to be too large, or if the structure or position of the second positioning components 7 changes.

[0128] Furthermore, such as Figure 1 As shown, the sleeve and the second steel strand anchor plate 431 have a second gap 82 in the axial direction of the anchor cage 3. The height of the second gap 82 in the axial direction of the anchor cage 3 is greater than or equal to the height of the first gap 81 in the axial direction of the anchor cage 3, so as to prevent the sleeve from interfering with the second positioning component 7.

[0129] In this embodiment, the vertical height of the second gap 82 is specifically 15mm to provide sufficient space for the second positioning component 7. In other alternative embodiments, the vertical height of the second gap 82 can be designed to be other vertical dimensions according to actual conditions, as long as the above requirements are met.

[0130] like Figure 5As shown, the lattice-type wind turbine tower also includes a fastener 9. A first through hole 4211 for the tower column steel strand 13 to pass through is provided on the first steel strand anchor plate 421. The fastener 9 is located on the side of the first steel strand anchor plate 421 facing the second steel strand anchor plate 431. The fastener 9 has a second through hole 91 for the tower column steel strand 13 to pass through. The outer circumferential surface of the tower column steel strand 13 abuts against the inner wall surface of the second through hole 91. Through the interference fit between the second through hole 91 and the tower column steel strand 13, the positions of the fastener 9 and the tower column steel strand 13 are fixed. The fastener 9 includes a connecting section 92 and an abutting section 93. The abutting section 93 is connected to the end of the connecting section 92 facing the second steel strand anchor plate 431. The connecting section 92 extends into the first through hole 4211, and its outer peripheral surface abuts against the inner wall surface of the first through hole 4211. The end face of the abutting section 93 away from the second steel strand anchor plate 431 abuts against the end face of the first steel strand anchor plate 421 facing the second steel strand anchor plate 431. Through the interference fit between the connecting section 92 and the first through hole 4211, the position of the fastener 9 and the first steel strand anchor plate 421 is fixed. The fastener 9, through the interference fit with the tower column steel strand 13 and the first steel strand anchor plate 421, locks the tower column steel strand 13 onto the first steel strand anchor plate 421, resulting in a simple connection method.

[0131] Furthermore, such as Figure 5 As shown, the fastener 9 in this embodiment includes a first fastener unit 94 and a second fastener unit 95 that are independent of each other. The first fastener unit 94 and the second fastener unit 95 are spliced ​​together circumferentially along the fastener 9 to form a second through hole 91. The first fastener unit 94 and the second fastener unit 95 can be spliced ​​together circumferentially on site to clamp the tower steel strand 13, eliminating the need for slow movement from the end of the tower steel strand 13. This enables rapid installation under conditions of no visibility, reduces installation difficulty, and ensures controllable installation accuracy. It is especially suitable for narrow spaces, where only small operating holes (e.g., waist holes) need to be opened on the vertical section 12.

[0132] Furthermore, such as Figure 5As shown, the lattice-type wind turbine tower also includes a locking member 10. The locking member 10 is located on the side of the fastener 9 facing the second steel strand anchor plate 431. The locking member 10 has a third through hole 101 through which the tower steel strand 13 passes. The outer peripheral surface of the tower steel strand 13 abuts against the inner wall surface of the third through hole 101. Through the interference fit between the tower steel strand 13 and the third through hole 101, the position of the tower steel strand 13 and the locking member 10 is fixed. The first fastener unit 94 has a first recess 102 at one end of its abutting section 93 facing the second steel strand anchor plate 431, and the second fastener unit 95 has a second recess 103 at one end of its abutting section 93 facing the second steel strand anchor plate 431. The locking member 10 has a first mating part 104 and a second mating part 105 at one end away from the second steel strand anchor plate 431. The outer peripheral surface of the first mating part 104 abuts against the inner wall surface of the first recess 102, and the outer peripheral surface of the second mating part 105 abuts against the inner wall surface of the second recess 103. The locking member 10 is used to fix the relative position of the first fastener unit 94 and the second fastener unit 95 to ensure that the fastener 9 formed by the first fastener unit 94 and the second fastener unit 95 can clamp the tower column steel strand 13.

[0133] In this embodiment, the first recess 102 and the second recess 103 form an annular recess. The locking member 10, facing the fastener 9, forms a first mating part 104 and a second mating part 105. The first mating part 104 and the second mating part 105 form an annular mating part, which is sandwiched between the outer circumferential surface of the tower steel strand 13 and the inner wall surface of the annular recess. This embodiment designs the recess and mating part as annular, reducing the difficulty of alignment and improving installation efficiency. Furthermore, the annular mating part and the annular recess form a complete circular clamping area, ensuring that the tower steel strand 13 is coaxial with the fastener 9 and avoiding eccentric loading.

[0134] In other alternative embodiments, the first recess 102 and the second recess 103 may also be groove structures, and the first mating part 104 and the second mating part 105 may be protrusions of corresponding shapes. The locking between the first fastener unit 94 and the second fastener unit 95 is achieved through the mating between the groove and the protrusion.

[0135] In other alternative embodiments, the fastener 9 can also be an integral structure without separate first fastener unit 94 and second fastener unit 95. In this state, there is no need to further design the locking member 10. The fastener 9 gradually moves from the end of the tower steel strand 13 (towards the foundation 2) toward the first steel strand anchor plate 421 until it is inserted into the first through hole 4211.

[0136] Based on the structure of tower column 1 and foundation 2 described above, the assembly process of tower column 1 and foundation 2 is briefly described below:

[0137] The foundation steel strand 41 is inserted into the sleeve. The first axial end of the foundation steel strand 41 is then sequentially inserted into the first steel strand anchor plate 421 and the first steel strand anchor head 422, and the first steel strand anchor head 422 secures the first axial end of the foundation steel strand 41. The second axial end of the foundation steel strand 41 is then sequentially inserted into the second steel strand anchor plate 431 and the second steel strand anchor head 432, and the second steel strand anchor head 432 secures the second axial end of the foundation steel strand 41, thus completing the assembly of the foundation steel strand assembly 4.

[0138] First, level the second anchor cage anchor plate 32. Then, pass the foundation steel strand assembly 4 through the second anchor cage anchor plate 32. Install the second positioning component 7 between the second anchor cage anchor plate 32 and the second steel strand anchor plate 431. Then, temporarily fix the first axial end of the foundation steel strand assembly 4 using the tooling bracket. Next, assemble the remaining parts of the anchor cage 3 (anchor cage anchor 33 and the first anchor cage anchor plate 31). According to the position of the foundation steel strand assembly 4, set the first positioning component 6. Then, remove the tooling bracket to fix the position of the foundation steel strand assembly 4 relative to the anchor cage 3.

[0139] Connect the vertical section 12 and the first anchor plate 31 of the anchor cage to first fix the positions of the inclined section 11 and the vertical section 12 relative to the anchor cage 3. Then, pass the tower steel strand 13 through the first through hole 4211 on the first steel strand anchor plate 421, pull the tower steel strand 13 at the lower end of the first steel strand anchor plate 421, and temporarily clamp the tower steel strand 13 with a clamping fixture. Then, clamp the tower steel strand 13 by cooperating with the first fastener unit 94 and the second fastener unit 95. Insert the connecting section 92 of the fastener 9 into the first through hole 4211, and then lock the first fastener unit 94 and the second fastener unit 95 with the locking member 10, thereby realizing the connection between the tower 1 and the foundation 2.

[0140] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown by the device or component in actual use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0141] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A lattice-type wind turbine tower, comprising a tower column and a foundation, characterized in that, The tower column includes an inclined section and a vertical section, and the foundation includes an anchor cage and a foundation steel strand assembly; The axial direction of the inclined section and the axial direction of the vertical section form an angle. The interior of the inclined section is provided with tower column steel strands extending along the axial direction of the inclined section. The axial direction of the anchor cage is parallel to the axial direction of the vertical section. The first axial end of the vertical section is connected to the inclined section, and the second axial end of the vertical section is connected to the first axial end of the anchor cage. The base steel strand assembly includes a base steel strand, a first fixing part and a second fixing part, wherein the first fixing part is connected to the first axial end of the base steel strand, and the second fixing part is connected to the second axial end of the base steel strand. The extension direction of the foundation steel strand is parallel to the extension direction of the tower column steel strand, and both ends of the foundation steel strand pass through the anchor bolt cage; the tower column steel strand is connected to the first fixing part, and the second axial end of the anchor bolt cage is connected to the second fixing part.

2. The lattice-type wind turbine tower as described in claim 1, characterized in that, The first fixing part includes a first steel strand anchor plate and a first steel strand anchor head. The first steel strand anchor head is located on the side of the first steel strand anchor plate away from the second fixing part and abuts against the first steel strand anchor plate. The end of the foundation steel strand facing the tower column passes through the first steel strand anchor plate and the first steel strand anchor head. The first steel strand anchor head locks the first axial end of the foundation steel strand. The extension direction of the tower column steel strand is perpendicular to the end face of the first steel strand anchor plate in its thickness direction, and the tower column steel strand is connected to the first steel strand anchor plate.

3. The lattice-type wind turbine tower as described in claim 2, characterized in that, The anchor cage includes a first anchor cage anchor plate, a second anchor cage anchor plate, and an anchor cage anchor bolt. The first anchor cage anchor plate and the second anchor cage anchor plate are spaced apart along the axial direction of the anchor cage. The two ends of the anchor cage anchor bolt are respectively connected to the first anchor cage anchor plate and the second anchor cage anchor plate. The first fixing part is located on the side of the first anchor cage anchor plate away from the second anchor cage anchor plate; The lattice-type wind turbine tower also includes a first positioning component, which is fixed to the anchor plate of the first anchor cage. The first positioning component has a first positioning hole for the foundation steel strand to pass through, and the first positioning hole is through both ends of the anchor cage in the axial direction.

4. The lattice-type wind turbine tower as described in claim 3, characterized in that, The first positioning component is located on the end face of the first anchor cage anchor plate away from the second anchor cage anchor plate; The first positioning component includes a first positioning bracket, a second positioning bracket, a third positioning bracket, and a fourth positioning bracket; The first positioning bracket and the second positioning bracket are spaced apart, and the third positioning bracket and the fourth positioning bracket are spaced apart. The two ends of the third positioning bracket are respectively connected to the first positioning bracket and the second positioning bracket, and the two ends of the fourth positioning bracket are respectively connected to the first positioning bracket and the second positioning bracket. The first positioning bracket, the second positioning bracket, the third positioning bracket and the fourth positioning bracket form the first positioning hole.

5. The lattice-type wind turbine tower as described in claim 2, characterized in that, The second fixing part includes a second steel strand anchor plate and a second steel strand anchor head. The second steel strand anchor head is located on the side of the second steel strand anchor plate away from the first fixing part. The end of the foundation steel strand away from the tower column passes through the second steel strand anchor plate and the second steel strand anchor head. The second steel strand anchor head locks the second axial end of the foundation steel strand. The anchor cage includes a first anchor cage anchor plate, a second anchor cage anchor plate, and an anchor cage anchor bolt. The first anchor cage anchor plate and the second anchor cage anchor plate are spaced apart along the axial direction of the anchor cage. The two ends of the anchor cage anchor bolt are respectively connected to the first anchor cage anchor plate and the second anchor cage anchor plate. The vertical section is connected to the first anchor cage anchor plate, and the second steel strand anchor plate is connected to the second anchor cage anchor plate.

6. The lattice-type wind turbine tower as described in claim 5, characterized in that, The second fixing part is located on the side of the second anchor cage anchor plate away from the first anchor cage anchor plate; The lattice-type wind turbine tower also includes a second positioning component, which is fixed to the anchor plate of the second anchor cage. The second positioning component has a second positioning hole through which the foundation steel strand passes, and the second positioning hole is through both ends of the anchor cage in the axial direction.

7. The lattice-type wind turbine tower as described in claim 6, characterized in that, The second positioning component includes a fifth positioning bracket and a sixth positioning bracket, which are spaced apart. The fifth positioning bracket, the sixth positioning bracket, and the portion of the second anchor cage anchor plate located between the fifth positioning bracket and the sixth positioning bracket form the second positioning hole.

8. The lattice-type wind turbine tower as described in claim 7, characterized in that, The second steel strand anchor plate and the second anchor cage anchor plate have a first gap in the axial direction of the anchor cage; At least a portion of the second positioning component is disposed within the first gap, and the second positioning component abuts against the end face of the second steel strand anchor plate on the axial direction of the anchor cage away from the anchor plate of the second anchor cage.

9. The lattice-type wind turbine tower as described in claim 8, characterized in that, The basic steel strand assembly also includes a sleeve, which covers the outer periphery of the basic steel strand and is disposed between the first steel strand anchor plate and the second steel strand anchor plate. The sleeve and the second steel strand anchor plate have a second gap in the axial direction of the anchor cage. The height of the second gap in the axial direction of the anchor cage is greater than or equal to the height of the first gap in the axial direction of the anchor cage.

10. The lattice-type wind turbine tower as described in claim 5, characterized in that, The first steel strand anchor plate is provided with a first through hole for the tower steel strand to pass through. The lattice wind turbine tower also includes a fastener. The fastener is located on the side of the first steel strand anchor plate facing the second steel strand anchor plate. The fastener includes a connecting section and an abutting section. The abutting section is connected to the end of the connecting section facing the second steel strand anchor plate. The fastener is provided with a second through hole for the tower column steel strand to pass through. The outer peripheral surface of the tower column steel strand abuts against the inner wall surface of the second through hole. The connecting section extends into the first through hole. The outer peripheral surface of the connecting section abuts against the inner wall surface of the first through hole. The end face of the abutting section away from the second steel strand anchor plate abuts against the end face of the first steel strand anchor plate facing the second steel strand anchor plate.

11. The lattice-type wind turbine tower as described in claim 10, characterized in that, The fastener includes a first fastener unit and a second fastener unit that are independent of each other. The first fastener unit and the second fastener unit are spliced ​​together along the circumference of the fastener to form the second through hole.

12. The lattice-type wind turbine tower as described in claim 11, characterized in that, The first fastener unit has a first recess at one end of the abutting section facing the second steel strand anchor plate, and the second fastener unit has a second recess at one end of the abutting section facing the second steel strand anchor plate. The lattice-type wind turbine tower also includes a locking component, which is located on the side of the fastener facing the second steel strand anchor plate. The locking component has a third through hole for the tower steel strand to pass through, and the outer peripheral surface of the tower steel strand abuts against the inner wall surface of the third through hole. The locking member has a first mating part and a second mating part at the end away from the second steel strand anchor plate. The outer peripheral surface of the first mating part abuts against the inner wall surface of the first recess, and the outer peripheral surface of the second mating part abuts against the inner wall surface of the second recess.

13. The lattice-type wind turbine tower as described in claim 12, characterized in that, The first recess and the second recess form an annular recess, and the first mating part and the second mating part form an annular mating part. The annular mating part is sandwiched between the outer peripheral surface of the tower column steel strand and the inner wall surface of the annular recess.

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