A connection structure of a rotary multi-layer gear tower and its installation method

Abstract

The present invention relates to a connection structure of a rotary multi-layer gear tower and an installation method thereof. A connection structure of a rotary multi-layer gear tower, the rotary multi-layer gear tower comprising a first tower, a second tower and M third towers, M being an integer greater than or equal to 0, when M=0, the first tower and the second tower are connected by a connection structure, when M>0, the first tower and the third tower on the top layer, the adjacent third tower, and the second tower and the third tower on the bottom layer are connected by a connection structure; the connection structure comprises an inner connection assembly and an outer connection assembly, the inner connection assembly comprising a plurality of staggered inner upper tooth blocks and inner lower tooth blocks, the outer connection assembly comprising a plurality of staggered outer upper tooth blocks and outer lower tooth blocks, the inner upper tooth blocks and the outer upper tooth blocks being connected, and the inner lower tooth blocks and the outer lower tooth blocks being connected.

Description

Technical Field

[0001] The present invention relates to the technical field of tower construction, and in particular to a connection structure of a rotary multi-layer gear tower and an installation method thereof. Background Art

[0002] With the increasing demand for global energy restructuring, wind power has gained widespread application as a clean energy source. Wind turbine towers are a crucial component of wind turbines, supporting the blades and drivetrain and withstanding wind loads. As the global wind power industry continues to grow, demands for increasingly diverse and efficient tower heights, structures, and materials are being met to meet the demands of higher-power wind turbines with longer blades. Therefore, wind turbine tower design not only involves considerations of material, structure, and cost, but also of overall durability and stability.

[0003] In recent years, the height of wind turbine towers and the power of wind turbines have increased significantly. Research teams and companies in various countries are constantly exploring innovative designs and new materials to adapt to the rapid development of wind power industry technology. The main research on wind turbine towers focuses on the load-bearing performance, material selection, manufacturing process and installation methods of the tower. In addition, as wind turbines develop towards high power, the optimization of tower structure and the lightweighting of materials have become important research directions. Traditional tower structures are mostly steel cylinders, but with the increase in height and cost, new tower structures have gradually been proposed, such as steel-concrete structure towers and multi-section assembled towers. The current mainstream forms of wind turbine towers can be divided into steel towers, concrete towers and steel-concrete structure towers. Each tower type has its own unique advantages and applicability.

[0004] Steel towers are the most traditional and common tower type, primarily manufactured from low-carbon steel. They offer excellent strength and toughness, making them suitable for large-scale mass production. Their advantages lie in their stable material, ease of construction, and high installation efficiency. However, when heights exceed 100 meters, the weight and manufacturing difficulty of steel towers increase significantly, leading to higher construction costs. Furthermore, steel towers are relatively weak in corrosion resistance in harsh climates (such as salt spray corrosion in coastal areas), requiring anti-corrosion treatment.

[0005] Concrete towers are primarily used for ultra-tall wind turbines and are cast from reinforced concrete. Their advantages include low construction costs and suitability for localized construction, particularly by utilizing local sand and gravel resources. Furthermore, concrete towers are superior to steel towers in corrosion resistance and stability. However, they are also heavy, particularly requiring a high foundation, and require a long construction period. Currently, the use of precast concrete tower splicing technology is increasing to improve construction efficiency and adapt to complex terrain.

[0006] Steel-concrete towers combine the advantages of steel and concrete structures, typically using steel for the upper portion and concrete for the lower portion. This design leverages the durability of concrete and the high strength of steel to enhance the tower's overall stability and wind resistance. This design is particularly suitable for tall towers, but its design and construction are complex and relatively costly.

[0007] As wind turbine towers grow taller, composite materials are gaining increasing attention. Composite materials, characterized by their lightness, high strength, and corrosion resistance, can reduce tower weight while increasing height and load-bearing capacity. However, composite materials are relatively expensive to manufacture and complex to form and maintain, and are still in the experimental and promotional stages.

[0008] The current design direction of wind turbine towers mainly focuses on the following aspects: First, the increase in height. As the length of wind turbine blades increases and the installed capacity increases, the tower height is gradually increased to obtain stronger wind energy resources. Secondly, the structural optimization design, such as using prestressed technology to improve the bending resistance of the tower, or improving the wind resistance by optimizing the cross-sectional shape of the tower. Lightweighting of materials is another key design focus. By using high-strength materials or composite materials, the tower's own weight can be reduced, thereby reducing costs. In addition, modular and assembly designs have also been proposed to achieve convenient transportation and installation, improve installation efficiency and reduce total costs.

[0009] Traditional tower connections typically utilize flange connections. These traditional connection methods present the following challenges: They offer a single installation method, limited construction flexibility, and difficulty adapting to complex design requirements and construction conditions. Under long-term tower design conditions and operational maintenance, wind-induced vibration or environmental factors can cause loosening and damage to connecting components, reducing overall tower stability and durability. Traditional rigid connectors age, making disassembly, repair, and replacement difficult. The stability, flexibility, and durability of traditional connection structures restrict the advancement of tower height. Summary of the Invention

[0010] The purpose of the present invention is to provide a connection structure of a rotating multi-layer gear tower and its installation method. The tower connection structure realizes the nested connection of the inner and outer tower layers by rotating the gear meshing structure.

[0011] The purpose of the present invention can be achieved by the following technical solutions:

[0012] A connection structure of a rotating multi-layer gear tower, wherein the rotating multi-layer gear tower comprises a first tower, a second tower and M third towers, where M is an integer greater than or equal to 0.

[0013] When M=0, the first tower and the second tower are connected by a connecting structure; when M>0, the first tower and the third tower on the uppermost layer, the adjacent third tower, and the second tower and the third tower on the lowermost layer are connected by a connecting structure;

[0014] The connection structure includes an inner connection component and an outer connection component.

[0015] The inner layer connection component includes a plurality of staggered inner layer upper tooth blocks and inner layer lower tooth blocks, and the outer layer connection component includes a plurality of staggered outer layer upper tooth blocks and outer layer lower tooth blocks, the inner layer upper tooth blocks and outer layer upper tooth blocks are connected, and the inner layer lower tooth blocks and outer layer lower tooth blocks are connected.

[0016] Furthermore, the inner upper tooth block and the inner lower tooth block have the same number of tooth blocks, and the outer upper tooth block and the outer lower tooth block have the same number of tooth blocks.

[0017] Furthermore, the number of the inner upper tooth blocks, the inner lower tooth blocks, the outer upper tooth blocks and the outer lower tooth blocks is n, and n is greater than and equal to 2.

[0018] Furthermore, the n inner and upper gear blocks are equidistantly distributed along the inner diameter of the wall of the first tower or the third tower;

[0019] The n inner lower layer gear blocks are equidistantly distributed along the inner diameter of the first tower or the third tower wall;

[0020] The n outer upper gear blocks are equidistantly distributed along the inner diameter of the second tower or the third tower wall;

[0021] The n outer lower layer gear blocks are equidistantly distributed along the inner diameter of the wall of the second tower or the third tower.

[0022] Furthermore, the centers of the inner upper gear blocks and the inner lower gear blocks are staggered relative to the center of the first tower or the third tower by an angle of 180° / n.

[0023] Furthermore, the centers of the outer upper gear blocks and the outer lower gear blocks are staggered relative to the center of the second tower or the third tower by an angle of 180° / n.

[0024] Furthermore, the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block are arc-shaped prism protruding structures.

[0025] The average thickness of each of the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block is 100-150 mm, and the average width is 150-200 mm.

[0026] Furthermore, the connection structure further comprises fixing bolts, and a plurality of bolt holes are provided on the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block.

[0027] The inner upper tooth block and the outer upper tooth block are fixedly connected by fixing bolts passing through bolt holes, and the inner lower tooth block and the outer lower tooth block are fixedly connected by fixing bolts passing through bolt holes.

[0028] Furthermore, in the above, the diameter of the fixing bolt is 30 to 50 mm.

[0029] As a preferred technical solution, the number of the fixing bolts can be selected according to the needs of the actual project.

[0030] Furthermore, the first tower, the second tower and the third tower are each provided with a plurality of connection holes.

[0031] The inner upper tooth block and the inner lower tooth block are fixed on the first tower or the third tower through the pre-tightening bolts passing through the connection holes.

[0032] The outer upper tooth block and the outer lower tooth block are fixed to the second tower or the third tower by passing pre-tightening bolts through the connection holes.

[0033] Furthermore, the material of the inner upper tooth block and the inner lower tooth block is the same as the inner wall of the first tower or the third tower;

[0034] The material of the outer upper tooth block and the outer lower tooth block is the same as the inner wall of the second tower or the third tower.

[0035] As a preferred technical solution, the material of the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block is preferably Q345NQR high-strength weathering steel with fatigue resistance.

[0036] Furthermore, the inner diameter of the first tower is 3 to 4 meters.

[0037] The first tower and the second tower have a floor height of 20m to 30m.

[0038] The present invention also provides a method for installing a rotary multi-layer gear tower, which is installed using the above-mentioned connection structure of the rotary multi-layer gear tower. The specific steps are as follows:

[0039] S1. First, vertically place the third tower and the second tower together on the foundation, with the third tower located inside the second tower;

[0040] S2. Lift the third tower from the inside, bring the inner connection assembly close to the outer connection assembly, and adjust the angle of the third tower so that the inner upper gear block is aligned with the outer upper gear block;

[0041] S3. Lift the third tower, pass the inner upper gear block through the gap between the two adjacent outer lower gear blocks and approach the outer upper gear block, and rotate the third tower to align the inner upper gear block with the outer lower gear block;

[0042] S4. Raise the third tower again, pass the inner upper gear block through the gap between the two adjacent outer upper gear blocks, and bring the inner lower gear block closer to the outer upper gear block. Rotate the third tower to align the inner upper gear block with the outer upper gear block, and the inner lower gear block with the outer lower gear block, so that the third tower is connected to the second tower to form a double-layer gear tower.

[0043] S5. Repeat steps S1 to S4 to sequentially build the remaining third tower and the first tower to obtain a rotary multi-layer gear tower.

[0044] In addition, the present invention also provides a method for installing a rotary multi-layer gear tower, which is installed using the above-mentioned connection structure of the rotary multi-layer gear tower. The specific steps are as follows:

[0045] First, install the second tower vertically on the foundation, then hoist the third tower from the outside and vertically install it. Adjust the angle of the third tower so that the inner lower gear block is aligned with the outer lower gear block, and the inner upper gear block is aligned with the outer upper gear block. Then, slowly lower the third tower to connect it with the second tower to form a double-layer gear tower.

[0046] Repeat the above steps to build the remaining third tower and the first tower in sequence to obtain a rotating multi-layer gear tower.

[0047] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0048] 1. The present invention uses an innovative connection component design to achieve different installation methods. For example, you can choose to place the two tower layers together on the foundation first, then lift the inner tower layer from the inside to the corresponding height and connect it to the outer tower layer. You can also install the outer tower layer on the foundation first and then lift the inner tower layer from the outside, which improves the flexibility of tower installation.

[0049] 2. The inner and outer towers of the present invention are connected by double-layer gear blocks. If a tower layer is severely damaged or aged after long-term use, the corresponding tower layer can be replaced. Unlike traditional hard connections, this design makes later disassembly, maintenance, and replacement more convenient.

[0050] 3. At the junction of the inner and outer towers, the double-layer tooth blocks create a larger cross-sectional area. When bending forces are applied, the deformation of the component is reduced, thereby improving the bending resistance. Properly increasing the distance between the two layers of tooth blocks can increase the area of ​​increased cross-sectional area, further improving the bending resistance.

[0051] 4. The present invention enables the tooth block to be anchored to the inner wall of the tower, so as to enhance the strength and stability of the connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the overall structure of the rotary double-layer gear tower in the present invention;

[0053] Figure 2 Schematic diagram of splicing two adjacent tower layers in the present invention;

[0054] Figure 3 Schematic diagram of the overall structure of the first tower in the present invention;

[0055] Figure 4 Schematic diagram of the structure of the inner layer connection component in the present invention;

[0056] Figure 5 Schematic diagram of the overall structure of the second tower in the present invention;

[0057] Figure 6 is a cross-sectional view of the second tower in the present invention;

[0058] Figure 7 Schematic diagram of the structure of the outer layer connection component in the present invention;

[0059] Figure 8 This is a schematic diagram of the angle of the tooth block of the inner layer connection component in the present invention;

[0060] Figure 9 This is a schematic diagram of the angle of the tooth block of the outer layer connection assembly of the present invention;

[0061] Figure 10 This is a schematic diagram of the actual splicing of two adjacent inner and outer layers of the tower tube according to the present invention;

[0062] Figure 11 Schematic diagram of the connection between the inner upper tooth block and the outer upper tooth block in the present invention;

[0063] Figure 12 This is a schematic diagram of the connection between the inner lower gear block and the outer lower gear block in the present invention;

[0064] Figure 13 This is a schematic diagram of the overall structure of the rotary three-layer gear tower in the present invention;

[0065] Figure 14Schematic diagram of the overall structure of the third tower in the present invention;

[0066] Explanation of the accompanying figures: 1. First tower, 2. Second tower, 3. Inner connecting assembly, 4. Outer connecting assembly, 31. Inner upper tooth block, 32. Inner lower tooth block, 41. Outer upper tooth block, 42. Outer lower tooth block, 5. Fixing bolt, 6. Bolt hole, 7. Third tower. DETAILED DESCRIPTION

[0067] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0068] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0069] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0071] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0072] Example 1

[0073] This embodiment provides a connection structure of a rotating multi-layer gear tower, wherein the rotating multi-layer gear tower includes a first tower 1, a second tower 2 and M third towers 7, where M is an integer greater than or equal to 0.

[0074] When M=0, the first tower 1 and the second tower 2 are connected by a connecting structure; when M>0, the first tower 1 and the uppermost third tower 7, the adjacent third tower 7, and the second tower 2 and the lowermost third tower 7 are connected by a connecting structure;

[0075] The connection structure includes an inner connection component 3 and an outer connection component 4.

[0076] The inner layer connection component 3 includes a plurality of staggered inner layer upper tooth blocks 31 and inner layer lower tooth blocks 32, and the outer layer connection component 4 includes a plurality of staggered outer layer upper tooth blocks 41 and outer layer lower tooth blocks 42. The inner layer upper tooth blocks 31 and the outer layer upper tooth blocks 41 are connected, and the inner layer lower tooth blocks 32 and the outer layer lower tooth blocks 42 are connected.

[0077] In this embodiment, the inner upper tooth block 31 and the inner lower tooth block 32 have the same number of tooth blocks, and the outer upper tooth block 41 and the outer lower tooth block 42 have the same number of tooth blocks.

[0078] In this embodiment, the number of the inner upper tooth block 31 , the inner lower tooth block 32 , the outer upper tooth block 41 and the outer lower tooth block 42 is n, and n is greater than and equal to 2.

[0079] In this embodiment, n inner and upper gear blocks 31 are equidistantly distributed along the inner diameter of the first tower 1 or the third tower 7;

[0080] The n inner lower layer gear blocks 32 are equidistantly distributed along the inner diameter of the first tower 1 or the third tower 7;

[0081] The n outer upper gear blocks 41 are equidistantly distributed along the inner diameter of the wall of the second tower 2 or the third tower 7;

[0082] The n outer lower layer gear blocks 42 are equidistantly distributed along the inner diameter of the wall of the second tower tube 2 or the third tower tube 7 in the circumferential direction.

[0083] In this embodiment, the centers of the inner upper tooth block 31 and the inner lower tooth block 32 are offset from each other by an angle of 180° / n relative to the center of the first tower 1 or the third tower 7 .

[0084] In this embodiment, the centers of the outer upper gear block 41 and the outer lower gear block 42 are offset from each other by 180° / n relative to the center of the second tower 2 or the third tower 7 .

[0085] In this embodiment, the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block are arc-shaped prism protruding structures.

[0086] The average thickness of each of the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block is 100-150 mm, and the average width is 150-200 mm.

[0087] In this embodiment, the connection structure further includes fixing bolts 5, and a plurality of bolt holes 6 are provided on the inner upper tooth block 31, the inner lower tooth block 32, the outer upper tooth block 41 and the outer lower tooth block 42.

[0088] The inner upper tooth block 31 and the outer upper tooth block 41 are fixedly connected by fixing bolts 5 passing through bolt holes 6 , and the inner lower tooth block 32 and the outer lower tooth block 42 are fixedly connected by fixing bolts 5 passing through bolt holes 6 .

[0089] In this embodiment, the diameter of the fixing bolt is 30-50 mm.

[0090] In this embodiment, the number of the fixing bolts can be selected according to the needs of the actual project.

[0091] In this embodiment, the first tower 1, the second tower 2 and the third tower 7 are each provided with a plurality of connection holes.

[0092] The inner upper gear block 31 and the inner lower gear block 32 are fixed to the first tower 1 or the third tower 7 through the connection holes by pre-tightening bolts.

[0093] The outer upper gear block 41 and the outer lower gear block 42 are fixed to the second tower 2 or the third tower 7 by means of pre-tightening bolts passing through the connection holes.

[0094] In this embodiment, the material of the inner upper tooth block and the inner lower tooth block is the same as the inner wall of the first tower 1 or the third tower 7;

[0095] The material of the outer upper gear block and the outer lower gear block is the same as the inner wall of the second tower 2 or the third tower 7 .

[0096] In this embodiment, the material of the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block is preferably Q345NQR high-strength weathering steel with fatigue resistance.

[0097] In this embodiment, the inner diameter of the first tower is 3 to 4 meters.

[0098] The first tower and the second tower have a floor height of 20m to 30m.

[0099] Example 2

[0100] See also Figure 1 This embodiment provides a connection structure of a rotary double-layer gear tower, wherein the rotary double-layer gear tower includes a first tower 1 and a second tower 2, and the connection structure includes an inner connection component 3 and an outer connection component 4.

[0101] The inner layer connection component 3 includes a plurality of staggered inner layer upper tooth blocks 31 and inner layer lower tooth blocks 32, and the outer layer connection component 4 includes a plurality of staggered outer layer upper tooth blocks 41 and outer layer lower tooth blocks 42. The inner layer upper tooth blocks 31 and the outer layer upper tooth blocks 41 are connected, and the inner layer lower tooth blocks 32 and the outer layer lower tooth blocks 42 are connected.

[0102] In this embodiment, the inner upper tooth block 31 and the inner lower tooth block 32 have the same number of tooth blocks, and the outer upper tooth block 41 and the outer lower tooth block 42 have the same number of tooth blocks.

[0103] In this embodiment, the number of the inner upper tooth block 31 , the inner lower tooth block 32 , the outer upper tooth block 41 and the outer lower tooth block 42 is four.

[0104] In this embodiment, the four inner upper gear blocks 31 are equidistantly distributed along the inner diameter of the wall of the first tower 1;

[0105] The four inner lower gear blocks 32 are equidistantly distributed along the inner diameter of the wall of the first tower 1;

[0106] The four outer upper gear blocks 41 are equidistantly distributed along the inner diameter of the wall of the second tower 2;

[0107] The four outer lower layer gear blocks 42 are equidistantly distributed along the inner diameter of the wall of the second tower 2 in the circumferential direction.

[0108] In this embodiment, the centers of the inner upper tooth blocks 31 and the inner lower tooth blocks 32 are staggered by 45° relative to the center of the first tower 1, and the number of single-layer tooth blocks n corresponds to 180° / n.

[0109] The centers of the outer upper tooth blocks 41 and the outer lower tooth blocks 42 are staggered by 45° relative to the center of the second tower 2 , and the number n of single-layer tooth blocks corresponds to 180° / n.

[0110] In this embodiment, the inner upper tooth block 31, the inner lower tooth block 32, the outer upper tooth block 41 and the outer lower tooth block 42 are arc-shaped prism protruding structures.

[0111] Each of the inner upper tooth block 31 , the inner lower tooth block 32 , the outer upper tooth block 41 and the outer lower tooth block 42 has an average thickness of 120 mm and an average width of 170 mm.

[0112] In this embodiment, the connection structure further includes fixing bolts 5, and a plurality of bolt holes 6 are provided on the inner upper tooth block 31, the inner lower tooth block 32, the outer upper tooth block 41 and the outer lower tooth block 42.

[0113] The inner upper tooth block 31 and the outer upper tooth block 41 are fixedly connected by fixing bolts 5 passing through bolt holes 6 , and the inner lower tooth block 32 and the outer lower tooth block 42 are fixedly connected by fixing bolts 5 passing through bolt holes 6 .

[0114] In this embodiment, the diameter of the fixing bolt 5 is 39 mm.

[0115] In this embodiment, each of the inner upper tooth block 31, the inner lower tooth block 32, the outer upper tooth block 41 and the outer lower tooth block 42 is provided with 12 bolt holes 6, which are evenly distributed in the circumferential direction. The single-layer tooth block has a total of 48 bolt holes 6, and the double-layer tooth block has a total of 96 bolt holes 6.

[0116] In this embodiment, the first tower 1 and the second tower 2 are both provided with a plurality of connection holes.

[0117] The inner upper gear block 31 and the inner lower gear block 32 are fixed to the first tower 1 through the pre-tightening bolts passing through the connection holes.

[0118] The outer upper gear block 41 and the outer lower gear block 42 are fixed to the second tower 2 by pre-tightening bolts passing through the connection holes;

[0119] In this embodiment, the material of the inner upper tooth block 31 and the inner lower tooth block 32 is the same as the inner wall of the first tower 1;

[0120] The material of the outer upper gear block 41 and the outer lower gear block 42 is the same as that of the inner wall of the second tower 2 .

[0121] In this embodiment, the material of the inner upper tooth block 31, the inner lower tooth block 32, the outer upper tooth block 41 and the outer lower tooth block 42 is preferably Q345NQR high-strength weathering steel with fatigue resistance.

[0122] In this embodiment, the inner diameter of the first tower 1 is 3.6 m, the inner diameter of the second tower 2 is 4 m, and the wall thickness of the first tower 1 and the second tower 2 is 30 mm;

[0123] The first tower 1 and the second tower 2 have a floor height of 30 m.

[0124] Example 3

[0125] This embodiment provides a method for installing a rotating double-layer gear tower that is lifted from the inside. The specific steps are as follows:

[0126] First, place the first tower 1 and the second tower 2 vertically on the foundation, with the first tower 1 located inside the second tower 2; then lift the first tower 1 from the inside, so that the inner connecting assembly 3 is close to the outer connecting assembly 4, and then adjust the angle of the connecting assembly so that the inner upper gear block 31 is aligned with the outer upper gear block 41; lift the first tower 1, and the inner upper gear block 31 passes through the gap between the two adjacent outer lower gear blocks 42 and approaches the outer upper gear block 41, and rotate the first tower 1 45 degrees clockwise or counterclockwise. Tube 1, so that the inner upper tooth block 31 is aligned with the outer lower tooth block 42; lift the first tower tube 1 again, the inner upper tooth block 31 passes through the gap between the two adjacent outer upper tooth blocks 41 and the inner lower tooth block 32 is close to the outer upper tooth block 41, rotate the first tower tube 1 45°, so that the inner upper tooth block 31 is aligned with the outer upper tooth block 41, and the inner lower tooth block 32 is aligned with the outer lower tooth block 42, and reinforced with fixing bolts 5 to realize the installation method of lifting the first tower tube 1 from the inside.

[0127] Example 4

[0128] This embodiment provides a method for installing a rotating double-layer gear tower by hoisting from the outside. The specific steps are as follows:

[0129] First, install the second tower 2 vertically on the foundation, then hoist the first tower 1 from the outside and vertically install it; adjust the angle of the first tower 1 so that the inner lower gear block 32 is aligned with the outer lower gear block 42, and the inner upper gear block 31 is aligned with the outer upper gear block 41; then slowly lower the first tower 1 and reinforce it with fixing bolts 5 to realize the installation method of hoisting the first tower 1 from the outside.

[0130] Example 5

[0131] This embodiment provides a connection structure of a rotating three-layer gear tower, wherein the rotating multi-layer gear tower includes a first tower 1, a second tower 2, and a third tower 7, wherein the first tower 1 and the third tower 7, as well as the second tower 2 and the third tower 7, are connected by a connection structure;

[0132] The connection structure includes an inner connection component 3 and an outer connection component 4.

[0133] The inner layer connection component 3 includes a plurality of staggered inner layer upper tooth blocks 31 and inner layer lower tooth blocks 32, and the outer layer connection component 4 includes a plurality of staggered outer layer upper tooth blocks 41 and outer layer lower tooth blocks 42. The inner layer upper tooth blocks 31 and the outer layer upper tooth blocks 41 are connected, and the inner layer lower tooth blocks 32 and the outer layer lower tooth blocks 42 are connected.

[0134] In this embodiment, the inner upper tooth block 31 and the inner lower tooth block 32 have the same number of tooth blocks, and the outer upper tooth block 41 and the outer lower tooth block 42 have the same number of tooth blocks.

[0135] In this embodiment, the number of the inner upper tooth block 31 , the inner lower tooth block 32 , the outer upper tooth block 41 and the outer lower tooth block 42 is four.

[0136] In this embodiment, the four inner upper gear blocks 31 are equidistantly distributed along the inner diameter of the first tower 1 or the third tower 7;

[0137] The four inner lower gear blocks 32 are equidistantly distributed along the inner diameter of the first tower 1 or the third tower 7;

[0138] The four outer upper gear blocks 41 are equidistantly distributed along the inner diameter of the wall of the second tower tube 2 or the third tower tube 7;

[0139] The four outer lower gear blocks 42 are equidistantly distributed along the inner diameter of the wall of the second tower tube 2 or the third tower tube 7 in the circumferential direction.

[0140] In this embodiment, the centers of the inner upper gear block 31 and the inner lower gear block 32 are offset from each other by 45° relative to the center of the first tower 1 or the third tower 7 .

[0141] In this embodiment, the centers of the outer upper gear block 41 and the outer lower gear block 42 are offset from each other by 45° relative to the center of the second tower 2 or the third tower 7 .

[0142] In this embodiment, the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block are arc-shaped prism protruding structures.

[0143] The average thickness of each of the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block is 120 mm, and the average width is 170 mm.

[0144] In this embodiment, the connection structure further includes fixing bolts 5, and a plurality of bolt holes 6 are provided on the inner upper tooth block 31, the inner lower tooth block 32, the outer upper tooth block 41 and the outer lower tooth block 42.

[0145] The inner upper tooth block 31 and the outer upper tooth block 41 are fixedly connected by fixing bolts 5 passing through bolt holes 6 , and the inner lower tooth block 32 and the outer lower tooth block 42 are fixedly connected by fixing bolts 5 passing through bolt holes 6 .

[0146] In this embodiment, the diameter of the fixing bolt is 39 mm.

[0147] In this embodiment, each of the inner upper tooth block 31, the inner lower tooth block 32, the outer upper tooth block 41 and the outer lower tooth block 42 is provided with 12 bolt holes 6, which are evenly distributed in the circumferential direction. The single-layer tooth block has a total of 48 bolt holes 6, and the double-layer tooth block has a total of 96 bolt holes 6.

[0148] In this embodiment, the first tower 1, the second tower 2 and the third tower 7 are each provided with a plurality of connection holes.

[0149] The inner upper gear block 31 and the inner lower gear block 32 are fixed to the first tower 1 or the third tower 7 through the connection holes by pre-tightening bolts.

[0150] The outer upper gear block 41 and the outer lower gear block 42 are fixed to the second tower 2 or the third tower 7 by means of pre-tightening bolts passing through the connection holes.

[0151] In this embodiment, the material of the inner upper tooth block and the inner lower tooth block is the same as the inner wall of the first tower 1 or the third tower 7;

[0152] The material of the outer upper gear block and the outer lower gear block is the same as the inner wall of the second tower 2 or the third tower 7 .

[0153] In this embodiment, the material of the inner upper tooth block, the inner lower tooth block, the outer upper tooth block and the outer lower tooth block is preferably Q345NQR high-strength weathering steel with fatigue resistance.

[0154] In this embodiment, the inner diameter of the first tower 1 is 3.2 m, the inner diameter of the third tower 7 is 3.6 m, the inner diameter of the second tower 2 is 4 m, and the wall thickness of the first tower 1, the third tower 7 and the second tower 2 is 30 mm;

[0155] The first tower 1 and the second tower 2 have a floor height of 30 m.

[0156] Example 6

[0157] This embodiment provides a method for installing a rotating three-layer gear tower that is lifted from the inside. The specific steps are as follows:

[0158] First, place the third tower 7 and the second tower 2 vertically on the foundation, with the third tower 7 located inside the second tower 2; then lift the third tower 7 from the inside, so that the inner connecting assembly 3 is close to the outer connecting assembly 4, and then adjust the angle of the connecting assembly so that the inner upper gear block 31 is aligned with the outer upper gear block 41; lift the third tower 7, so that the inner upper gear block 31 passes through the gap between the two adjacent outer lower gear blocks 42 and approaches the outer upper gear block 41, and rotate the third tower 7 45 degrees clockwise or counterclockwise so that the inner upper gear block 31 is aligned with the outer lower gear block 4 2; lift the third tower 7 again, the inner upper gear block 31 passes through the gap between the two adjacent outer upper gear blocks 41 and brings the inner lower gear block 32 close to the outer upper gear block 41, rotate the third tower 7 45°, align the inner upper gear block 31 with the outer upper gear block 41, align the inner lower gear block 32 with the outer lower gear block 42, and use the fixing bolts 5 to reinforce, so as to realize the installation method of lifting the third tower 7 from the inside; after lifting the second tower by the above method, repeat the above operation to build the first tower 1 to obtain a rotary three-layer gear tower.

[0159] Example 7

[0160] This embodiment provides a method for installing a rotating three-layer gear tower by hoisting from the outside. The specific steps are as follows:

[0161] First, install the second tower 2 vertically on the foundation, then lift the third tower 7 from the outside and vertically; adjust the angle of the third tower 7 so that the inner lower gear block 32 is aligned with the outer lower gear block 42, and the inner upper gear block 31 is aligned with the outer upper gear block 41; then slowly lower the third tower 7 and reinforce it with fixing bolts 5 to realize the installation method of lifting the third tower 7 from the outside; after lifting the second tower by the above method, repeat the above operation to lift the first tower 1 to obtain a rotating three-layer gear tower.

[0162] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A connection structure of a rotary multi-layer gear tower, characterized in that: The rotary multi-layer gear tower comprises a first tower (1), a second tower (2) and M third towers (7), wherein the first tower (1) is located above the M third towers (7), and the second tower (2) is located below the M third towers (7), where M is an integer greater than or equal to 0. When M=0, the first tower (1) and the second tower (2) are connected via a connecting structure; when M>0, the first tower (1) and the third tower (7) on the uppermost layer, the adjacent third towers (7), and the second tower (2) and the third tower (7) on the lowermost layer are all connected via a connecting structure; The connection structure comprises an inner connection component (3) and an outer connection component (4), The inner layer connection assembly (3) includes a plurality of staggered inner layer upper layer tooth blocks (31) and inner layer lower layer tooth blocks (32), and the outer layer connection assembly (4) includes a plurality of staggered outer layer upper layer tooth blocks (41) and outer layer lower layer tooth blocks (42), the inner layer upper layer tooth blocks (31) and the outer layer upper layer tooth blocks (41) are connected, and the inner layer lower layer tooth blocks (32) and the outer layer lower layer tooth blocks (42) are connected; The number of tooth blocks of the inner upper tooth block (31), the inner lower tooth block (32), the outer upper tooth block (41) and the outer lower tooth block (42) is n, and n is greater than and equal to 2; The n inner and upper tooth blocks (31) are equidistantly distributed along the outer diameter of the first tower (1) and the third tower (7); The n inner lower layer tooth blocks (32) are equidistantly distributed along the outer diameter of the first tower (1) and the third tower (7); The n outer upper layer tooth blocks (41) are equidistantly distributed along the inner diameter of the wall of the second tower (2) and the third tower (7); The n outer lower layer tooth blocks (42) are equidistantly distributed along the inner diameter of the wall of the second tower (2) and the third tower (7).

2. The connection structure of a rotary multi-layer gear tower according to claim 1, characterized in that: The inner upper tooth block (31) and the inner lower tooth block (32) have the same number of tooth blocks, and the outer upper tooth block (41) and the outer lower tooth block (42) have the same number of tooth blocks.

3. The connection structure of a rotary multi-layer gear tower according to claim 1, characterized in that: The centers of the inner upper tooth block (31) and the inner lower tooth block (32) are offset from each other by 180° / n relative to the center of the first tower (1) or the third tower (7).

4. The connection structure of a rotary multi-layer gear tower according to claim 1, characterized in that: The centers of the outer upper tooth block (41) and the outer lower tooth block (42) are offset from each other by 180° / n relative to the center of the second tower (2) or the third tower (7).

5. The connection structure of a rotary multi-layer gear tower according to claim 1, characterized in that: The connection structure further comprises a fixing bolt (5), and a plurality of bolt holes (6) are provided on the inner upper tooth block (31), the inner lower tooth block (32), the outer upper tooth block (41) and the outer lower tooth block (42). The inner upper tooth block (31) and the outer upper tooth block (41) are fixedly connected by means of fixing bolts (5) passing through bolt holes (6), and the inner lower tooth block (32) and the outer lower tooth block (42) are fixedly connected by means of fixing bolts (5) passing through bolt holes (6).

6. The connection structure of a rotary multi-layer gear tower according to claim 1, characterized in that: The first tower (1), the second tower (2) and the third tower (7) are each provided with a plurality of connection holes. The inner upper tooth block (31) and the inner lower tooth block (32) are fixed to the first tower (1) and the third tower (7) by means of pre-tightening bolts passing through the connection holes. The outer upper tooth block (41) and the outer lower tooth block (42) are fixed to the second tower (2) and the third tower (7) by means of pre-tightening bolts passing through the connection holes.

7. A method for installing a rotating multi-layer gear tower, characterized in that: The connection structure of the rotary multi-layer gear tower described in any one of claims 1 to 6 is used for installation, and the specific steps are as follows: S1. First, vertically place the third tower (7) and the second tower (2) together on a foundation, with the third tower (7) located inside the second tower (2); S2, then hoist the third tower (7) from the inside, so that the inner connecting assembly (3) and the outer connecting assembly (4) are close to each other, and adjust the angle of the third tower (7) so that the inner upper gear block (31) and the outer upper gear block (41) are aligned in angle; S3, lifting the third tower (7), the inner upper gear block (31) passes through the gap between two adjacent outer lower gear blocks (42) and approaches the outer upper gear block (41), and the third tower (7) is rotated so that the inner upper gear block (31) is aligned with the outer lower gear block (42); S4, lift the third tower (7) again, the inner upper gear block (31) passes through the gap between the two adjacent outer upper gear blocks (41) and the inner lower gear block (32) is brought close to the outer upper gear block (41), rotate the third tower (7), align the inner upper gear block (31) with the outer upper gear block (41), and align the inner lower gear block (32) with the outer lower gear block (42), so that the third tower (7) is connected to the second tower (2), forming a double-layer gear tower; S5. Repeat steps S1 to S4 to sequentially build the remaining third tower (7) and the first tower (1) to obtain a rotary multi-layer gear tower.

8. A method for installing a rotating multi-layer gear tower, characterized in that: The connection structure of the rotary multi-layer gear tower described in any one of claims 1 to 6 is used for installation, and the specific steps are as follows: First, the second tower (2) is vertically installed on the foundation, and then the third tower (7) is hoisted from the outside and then vertically installed; the angle of the third tower (7) is adjusted so that the inner lower gear block (32) is aligned with the outer lower gear block (42), and the inner upper gear block (31) is aligned with the outer upper gear block (41); then the third tower (7) is slowly lowered to connect with the second tower (2), thereby forming a double-layer gear tower; Repeat the above operation to sequentially build the remaining third tower (7) and the first tower (1) to obtain a rotary multi-layer gear tower.

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