Tower hoisting method, tower and wind turbine generator system

Abstract

The application provides a tower hoisting method, a tower and a wind turbine generator unit. The tower hoisting method hoists a tower section to a predetermined position by a tower hoisting tool. The tower hoisting tool comprises an adapter and a sling. The tower hoisting method comprises the following steps: arranging the adapter in a radial through hole on a tower wall of the tower section; connecting the upper end of the sling with a hoisting device to vertically hoist the tower section. During the hoisting process, the lower end of the sling exerts an upward force on the tower section through the adapter. According to the tower hoisting method, the influence of the lateral force of the sling on the tower can be reduced, the deformation of the tower can be avoided, and the safety and stability of the tower hoisting can be improved.

Description

Technical Field

[0001] This invention relates to the field of wind power generation, specifically to a tower hoisting method, a tower installed by the tower hoisting method, and a wind turbine generator set including the tower. Background Technology

[0002] In the field of wind turbine tower installation, traditional methods typically place the lifting points at the top of the tower. With this setup, the slings are inclined to the lifting points on the top surface of the tower, causing the top of the tower to bear significant lateral forces. Because this lateral force is concentrated at the lifting points, the tower is highly susceptible to deformation or even damage in the vicinity of these points during the continuous application of force during installation. This not only affects the structural integrity of the tower and reduces its load-bearing capacity but may also pose a potential threat to the stability and safety of the entire wind turbine generator set. Summary of the Invention

[0003] This invention provides a tower hoisting method that can avoid tower deformation and improve the stability and safety of the hoisting process.

[0004] According to one aspect of the present invention, a tower hoisting method is provided, wherein a tower section is hoisted to a predetermined position using a tower hoisting fixture, the tower hoisting fixture including an adapter and a sling, and the tower hoisting method includes: disposing the adapter in a radial through hole on the tower wall of the tower section; connecting the hoisting equipment to the upper end of the sling, and vertically hoisting the tower section; during the hoisting process, the lower end of the sling applies an upward force to the tower section through the adapter.

[0005] The tower hoisting method further includes: bonding multiple tower sections together with concrete grout to form the tower section, wherein the radial through hole is set on the tower wall of the lowest tower section.

[0006] The tower hoisting method further includes: after bonding multiple tower sections together with concrete grout, connecting adjacent tower sections with connecting bolts or connecting cables, or connecting the multiple tower sections with a first prestressed cable, thereby forming the tower section.

[0007] The tower hoisting method further includes: bonding multiple tower sections together with concrete grout and connecting the multiple tower sections together with a first prestressed cable to form the tower section, wherein the first prestressed cable passes through the multiple tower sections in sequence, and the radial through hole is set on the tower wall of the uppermost tower section.

[0008] The tower hoisting method further includes: hoisting multiple tower sections in sequence, bonding two adjacent tower sections together with concrete grout, and then applying prestress to the multiple tower sections through a second prestressed cable.

[0009] The second prestressed cable is an external prestressed cable, which is installed on the inner side of the tower wall of the multiple tower sections. The lower end of the second prestressed cable is connected to the foundation of the wind turbine generator, and the upper end of the second prestressed cable is connected to the upper end of the uppermost tower section.

[0010] The tower hoisting fixture also includes a sling limiting component, and the tower hoisting method further includes: setting the sling limiting component at the top of the tower section, and using the sling limiting component to keep the sling at a distance from the tower wall.

[0011] The sling limiting assembly includes a mounting part and a limiting part. The limiting part extends laterally from the mounting part and forms a limiting hole. The tower hoisting method further includes: fixing the mounting part to the tower wall before inserting the adapter into the radial through hole, and allowing the lower end of the sling to extend downward through the limiting hole.

[0012] The adapter is a pad or a hollow sleeve, which is disposed between the wall of the radial through hole and the lifting strap, so that the lifting strap passes through the radial through hole and lifts the tower section by applying an upward force to the adapter.

[0013] The adapter is a pin, the end of which can extend out of the radial through hole. The lower end of the sling can be hooked onto the pin, and the tower section is lifted by applying an upward force to the pin.

[0014] The sling includes a first sling and a second sling. The two ends of the pin can extend from the two ends of the radial through hole, and the lower ends of the first sling and the second sling can be hooked onto the two ends of the pin, respectively.

[0015] The pin includes a pin body, a first limiting protrusion disposed at a first end of the pin body, and a second limiting protrusion detachably mounted to a second end of the pin body. The step of disposing the adapter in the radial through hole includes: passing the second end of the pin body through the radial through hole and mounting the second limiting protrusion to the second end of the pin body.

[0016] The pin also includes a sling limiting ring, which is installed on the first limiting protrusion and is used to limit the first sling to the first end of the pin when the lower end of the first sling is sleeved on the first end of the pin. The tower section hoisting method includes: before setting the pin in the radial through hole, lowering the lower end of the first sling to the position corresponding to the radial through hole, and pulling the second end of the pin body into the radial through hole and passing through the radial through hole.

[0017] The tower hoisting fixture also includes a pin support component, which includes a pin support plate and a fixing plate. Before the first sling connected to the pin is lowered to the position corresponding to the radial through hole, the pin support plate is inserted into the radial through hole and arranged horizontally and protruding further outward from the tower wall.

[0018] The tower hoisting fixture also includes a hoisting bracket, which has a first sling connection and a second sling connection. The tower hoisting method further includes connecting the upper end of the first sling to the first sling connection and connecting the upper end of the second sling to the second sling connection.

[0019] The hoisting support includes a hoisting beam and a sling installation fixture. The sling installation fixture includes a connecting plate and a balance frame rotatably mounted on the lower end of the connecting plate. The first sling connection and the second sling connection are respectively located on both sides of the balance frame. The upper end of the connecting plate is mounted on the hoisting beam. The upper end of the first sling is rotatably connected to the first sling connection, and the upper end of the second sling is rotatably connected to the second sling connection.

[0020] According to another aspect of the present invention, a tower is provided, which is installed by the tower hoisting method described above, and the tower wall is provided with the radial through hole, which can cooperate with the adapter.

[0021] According to another aspect of the present invention, a wind turbine generator set is provided, the wind turbine generator set including the tower as described above.

[0022] The tower hoisting method according to the present invention can reduce the impact of the lateral force of the slings on the tower and avoid tower deformation. Furthermore, it makes the hoisting process safer and easier to operate, improving the safety and stability of tower hoisting. Attached Figure Description

[0023] The above and / or other objects and advantages of the present invention will become more apparent from the following description of embodiments in conjunction with the accompanying drawings, wherein: Figure 1 and Figure 2 A schematic diagram is shown of using tower hoisting fixtures to hoist a tower section.

[0024] Figure 3 A diagram showing the internal structure of a tower section is provided.

[0025] Figure 4 This diagram shows the structure after the individual tower sections are hoisted onto the wind turbine generator base; Figure 5 A partial structural schematic diagram using a sling limit assembly is shown.

[0026] Figure 6 A schematic diagram of the sling limiting assembly is shown.

[0027] Figures 7 to 10 A structural schematic diagram is shown, illustrating the pin and its connection to the lifting strap and tower section.

[0028] Figure 11 This is a structural diagram showing the disassembly of the pin and the sling limit assembly.

[0029] Figure 12 A schematic diagram of the pin support component of the present invention installed on the tower wall is shown.

[0030] Figure 13 and Figure 14 A schematic diagram of the structure of the lifting support used in the tower lifting method according to the present invention is shown.

[0031] Figure label name: 10-Lifting bracket, 100-Lifting strap limiting assembly, 110-Installation part, 120-Limiting part, 121-First limiting part, 122-Second limiting part, 130-Limiting hole, 131-First limiting hole, 132-Second limiting hole, 20-Foundation, 200-Lifting strap, 210-First lifting strap, 220-Second lifting strap, 30-Adapter, 300-Pin, 310-Pin body, 320-First limiting protrusion, 330-Second limiting protrusion 340-Sling limiting ring, 350-Pull ring, 400-Pin support, 410-Pin support plate, 420-Fixing plate, 500-First prestressed cable, 600-Second prestressed cable, 60-Sling installation fixture, 61-Connecting plate, 62-Balance frame, 610-First sling connection, 620-Second sling connection, 70-Tower section, 71-Radial through hole, 72-Protruding part, 73-Inner wall, 80-Lifting beam, 81-Lower lifting point. Detailed Implementation

[0032] Exemplary embodiments of the invention will now be described more fully with reference to the accompanying drawings. However, it should not be construed that the embodiments of the invention are limited to those described herein. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0033] Figure 1 and Figure 2 A schematic diagram is shown of using tower hoisting fixtures to hoist a tower section.

[0034] According to an embodiment of the present invention, the tower hoisting method employs tower hoisting fixtures to hoist each tower section 70, such as... Figure 1 and Figure 2 As shown, the tower hoisting fixture includes an adapter 30 and a sling 200 for hoisting the tower section 70 to a predetermined position. The method for hoisting the tower section using the tower hoisting fixture may include: placing the adapter 30 in a radial through-hole 71 on the tower wall of the tower section 70; connecting the hoisting equipment to the upper end of the sling 200 to vertically hoist the tower section 70; during the hoisting process, the lower end of the sling 200 applies an upward force to the tower section 70 through the adapter 30.

[0035] According to an embodiment of this application, by providing a radial through hole 71 on the tower wall and using a connector 30 inserted into the radial through hole 71 to apply an upward force to the tower, instead of setting a lifting point at the top of the tower section 70, damage to the lifting point area at the top of the tower is avoided due to excessive force.

[0036] Furthermore, compared to having the lifting point formed at the top of the tower section 70, by inserting the adapter 30 through the radial through hole 71 and then using the sling 200 for lifting, the possibility of swaying and tilting of the tower section 70 during the lifting process can be reduced. The tower section 70 can maintain a better posture during lifting, which can reduce the impact of unstable factors on the lifting operation, improve the lifting accuracy and efficiency, help to complete the installation operation smoothly, and reduce the construction difficulty and safety risks.

[0037] In addition, each tower section 70 may include multiple tower sections, that is, the tower hoisting tool can hoist multiple tower sections at a time, thereby saving hoisting time and reducing hoisting costs. Figure 1 and Figure 2 The illustration shows a case where each tower section 70 comprises four tower segments, but is not limited to this; each tower section 70 may comprise more or fewer tower segments as needed. In this case, the tower hoisting method according to the invention further includes bonding multiple tower segments together with concrete grout to form the tower section 70.

[0038] like Figure 1As shown, the radial through hole 71 can be set on the tower wall of the lowest tower section. Although the center of gravity is lowered during hoisting, the lateral support of the sling 200 can prevent problems such as the tower section 70 tilting. Furthermore, due to the use of bottom-support hoisting, multiple tower sections do not need to be pre-tightened in the vertical direction; they can be bonded using only concrete grout.

[0039] However, although strong adhesion is not required between multiple tower sections, to ensure a more stable connection, after bonding the multiple tower sections together with concrete grout, adjacent tower sections can be connected together with connecting bolts or cables to form tower segment 70. But the invention is not limited to this; multiple tower sections can also be connected together by first prestressed cables 500 passing through them sequentially, thereby making the overall structure of each tower segment more stable.

[0040] In addition, such as Figure 2 As shown, the radial through hole 71 can also be set on the tower wall of the uppermost tower section. When using this top-hanging method for hoisting, if multiple tower sections are only bonded together with concrete grout, insufficient bonding strength between the sections may cause them to detach during hoisting. Therefore, as... Figure 3 As shown, multiple tower sections can be bonded together with concrete grout, and then connected to each other using first prestressed cables 500 to form a tower segment 70. For example, the first prestressed cable 500 can be an internal cable, which passes through the interior of multiple tower sections in sequence to form the tower segment 70. Furthermore, multiple first prestressed cables 500 can be arranged along the circumference of the tower segment 70.

[0041] After fixing multiple tower sections together to form a tower section 70, the tower sections 70 can be hoisted sequentially using the tower hoisting fixture according to the present invention, and adjacent tower sections 70 are bonded together with concrete grout. Then, prestress is applied to the multiple tower sections 70 using the second prestressed cable 600, such as... Figure 4 As shown.

[0042] According to an embodiment of the present invention, the second prestressing cable 600 is an external prestressing cable. The second prestressing cable 600 is disposed on the inner side of the tower wall, with its upper end fixed to the inner side of the tower wall of the plurality of tower sections 70. The lower end of the second prestressing cable 600 is connected to the foundation 20 of the wind turbine generator, and the upper end of the second prestressing cable 600 is connected to the upper end of the uppermost tower section 70. For example, the upper end of the uppermost tower section 70 may include a protruding portion 72 protruding inward relative to the inner wall of the tower, and the upper end of the second prestressing cable 600 may pass through and connect to this protruding portion 72. In this way, the plurality of tower sections 70 can be fixed to each other and to the foundation 20 of the wind turbine generator.

[0043] Figure 5 A partial structural schematic diagram of hoisting using the sling limiting assembly 100 is shown. Figure 6 A schematic diagram of the sling limiting assembly 100 is shown.

[0044] According to an embodiment of the present invention, the tower hoisting fixture may further include a sling limiting assembly 100, which is used when the radial through hole 71 is formed in the lowest tower section of the corresponding tower segment ( Figure 1 The sling limiting assembly 100 can be used when the sling 200 is on the tower section 70 (as shown in the diagram) or on a relatively lower tower section. The sling limiting assembly 100 can be located at the top of the tower section 70 and can be used to keep the sling 200 at a distance from the tower wall.

[0045] like Figure 6 As shown, the sling limiting assembly 100 may include a mounting portion 110 and a limiting portion 120. The limiting portion 120 extends laterally from the mounting portion 110 and forms a limiting hole 130. The lower end of the sling 200 can extend downward through the limiting hole 130. The limiting hole 130 may include a first limiting hole 131 and a second limiting hole 132. The sling 200 may include a first sling 210 and a second sling 220. The first sling 210 and the second sling 220 can extend downward through the first limiting hole 131 and the second limiting hole 132, respectively. The mounting portion 110 can be detachably mounted to the tower wall. The limiting portion 120 extends laterally from the mounting portion 110. The first limiting hole 131 and the second limiting hole 132 are respectively provided on both sides of the tower wall.

[0046] According to an embodiment of the present invention, before inserting the adapter into the radial through hole 71, the mounting part 110 can be fixed to the tower wall first, and the first sling 210 and the second sling 220 can extend downward through the limiting hole 130. The first limiting hole 131 and the second limiting hole 132 can respectively space the first sling 210 and the second sling 220 from the tower wall by a predetermined distance, preventing interference with the tower wall and enabling the sling 200 to be accurately lowered to the desired position. In addition, the limiting hole 130 can effectively limit the lateral swing of the sling, ensuring that the sling always remains in the predetermined position and avoiding frictional damage caused by contact with the tower wall or other components.

[0047] According to a preferred embodiment of the present invention, the limiting part 120 may be disposed at the upper end of the tower section 70, and the mounting part 110 may include positioning legs extending downward from the limiting part 120. The sling limiting assembly 100 is fixedly connected to the tower wall through the positioning legs. For example, the mounting part 110 may include two positioning legs extending downward from both sides of the limiting part 120, the two positioning legs being horizontally spaced apart from each other to provide stable support for the sling limiting assembly 100. The two positioning legs may be installed on the same side of the tower wall of the tower section 70. For example, the positioning legs may be installed on the inner wall 73 of the tower section 70 to facilitate the installation of the sling limiting assembly 100 by workers on a working platform inside the tower.

[0048] The structure of the limiting part 120 and the mounting part 110 is not limited to Figure 6 In the scenario shown, the limiting part 120 only needs to be configured such that the first limiting hole 131 and the second limiting hole 132 through which the sling passes are spaced a certain distance from the tower wall, and the mounting part 110 only needs to be able to mount the limiting part 120 onto the tower section 70. For example, the shape of the limiting part 120 is not limited to... Figure 6 The frame shape shown can be any other shape including the first limiting hole 131 and the second limiting hole 132 mentioned above. For example, the mounting portion 110 can be located in the area between the first limiting portion 121 and the second limiting portion 122 in a direction perpendicular to the tower wall, and the mounting portion 110 can be attached to the tower section 70 from the top of the tower section 70.

[0049] Furthermore, the dimensions of the first limiting hole 131 and the second limiting hole 132 can be set according to the size of the sling, as long as it ensures that the sling 200 can pass through smoothly. Additionally, protective sleeves can be installed at the points where the sling 200 passes through the first limiting hole 131 and the second limiting hole 132 to reduce friction between the sling 200 and the edge of the limiting hole 130. The sling 200 can be made of high-strength, wear-resistant, and flexible materials, such as specially made polyester fiber slings, whose surface can be treated to enhance wear resistance, or high-strength and corrosion-resistant steel wire rope can be used.

[0050] According to an embodiment of the present invention, the adapter 30 that can be inserted into the radial through hole 71 can be a pad (not shown) or a hollow sleeve (not shown). The pad or hollow sleeve can be disposed between the hole wall of the radial through hole 71 and the sling 200, so that the sling 200 passes through the radial through hole 71 and lifts the tower section 70 by applying an upward force to the adapter 30. That is, the sling 200 can pass through the radial through hole 71, and both ends of the sling 200 are fixed to the lifting equipment. In order to avoid damage to the hole wall of the radial through hole 71 by the force of the sling 200, an adapter 30 such as a pad or a hollow sleeve is provided in the radial through hole 71 to separate the sling 200 from the hole wall of the radial through hole 71.

[0051] However, embodiments of the present invention are not limited thereto; the adapter 30 may also be a pin 300. Figures 7 to 10 The diagram shows an example of using pin 300 as a connector to hoist a tower section, and a structural diagram of pin 300.

[0052] As shown in the figure, the end of the pin 300 can extend from the radial through hole 71, and the lower end of the lifting strap 200 can be hooked onto the pin 300. The tower section 70 is lifted by applying an upward force to the pin 300. The two ends of the pin 300 can extend from the two ends of the radial through hole 71 respectively, and the lower ends of the first lifting strap 210 and the second lifting strap 220 can be hooked onto the two ends of the pin 300 respectively.

[0053] The pin 300 may include a pin body 310, a first limiting protrusion 320 disposed at a first end of the pin body 310, and a second limiting protrusion 330 detachably mounted to a second end of the pin body 310. The step of disposing the adapter 30 in the radial through hole 71 includes: passing the second end of the pin body 310 through the radial through hole 71 and mounting the second limiting protrusion 330 to the second end of the pin body 310.

[0054] As shown in the figure, the first limiting protrusion 320 and the second limiting protrusion 330 protrude outward in the radial direction relative to the pin body 310, and their outer diameters are larger than the inner diameters of the radial through hole 71. After the pin 300 is installed in the radial through hole 71, the sling 200 can be hung on the pin body 310 in the space between the first limiting protrusion 320 and the second limiting protrusion 330 and the tower wall respectively without slipping.

[0055] Furthermore, the first limiting protrusion 320 and the second limiting protrusion 330 may have a circular plate shape, and their diameter is larger than the diameter of the pin body 310. However, the shape of the first limiting protrusion 320 and the second limiting protrusion 330 is not limited to this. For example, the first limiting protrusion 320 and the second limiting protrusion 330 may have regular or other irregular plate shapes such as rectangles or ovals, as long as they can prevent the sling 200 from slipping laterally during hoisting.

[0056] The pin 300 may also include a sling limiting ring 340, which is mounted on the first limiting protrusion 320 and is used to limit the first sling 210 to the first end of the pin 300 when the lower end of the first sling 210 is sleeved on the first end of the pin 300. Here, during the process of lowering the pin 300 using the first sling 210, the pin 300 sleeved on the lower end of the first sling 210 actually only includes the pin body 310 and the first limiting protrusion 320, while the second limiting protrusion 330 is in a detached state to facilitate the insertion of the pin 300 into the radial through hole 71 and then connecting it to the second limiting protrusion 330.

[0057] According to an embodiment, at least one fixing hole may be formed on the first limiting protrusion 320, and the sling limiting ring 340 may be a steel wire rope, which can pass through the fixing hole and connect to the pin 300. When the lower end of the first sling 210 is sleeved on the first end of the pin 300, the steel wire rope can pass through the fixing hole formed on the first limiting protrusion 320 and surround the first sling 210 from the outside to prevent it from detaching from the pin 300. In this way, it can be ensured that the pin 300 will not fall off when the first sling 210 is used to transport the pin 300. In the embodiments of this application, for the convenience of hooking with the pin 300, both the first sling 210 and the second sling 220 are configured as loops. When the first sling 210 is in a slack state, the lower end of the first sling 210 can be threaded from the second end of the pin 300 onto the pin 300, and then the first sling 210 can be pulled to the first end of the pin 300 and constrained at the first end of the pin 300 by the sling limiting ring 340.

[0058] Furthermore, after connecting the first sling 210 and the pin 300 using the sling limit ring 340, the sling limit ring 340 does not need to be removed before the tower hoisting is completed. In this case, such as Figure 7 As shown, when the sling limit ring 340 connects the first sling 210 to the pin 300, it avoids the position that the first sling 210 will occupy during the hoisting process, ensuring that the first sling 210 and the pin 300 are in a roughly vertical state during hoisting. However, the present invention is not limited to this. The sling limit ring 340 can also be made of a flexible material rope. In this case, as long as it can prevent the pin 300 from falling off the first sling 210, the state of the first sling 210 and the pin 300 during hoisting can be disregarded.

[0059] According to an embodiment of the present invention, before the pin 300 is placed in the radial through hole 71, the lower end of the first sling 210 to which the pin 300 is connected can be lowered to a position corresponding to the radial through hole 71, and the second end of the pin body 310 can be pulled into the radial through hole 71 and pass through the radial through hole 71. When the sling limiting assembly 100 is provided, the pin 300 may not be able to pass through or may have difficulty passing through the limiting hole 130; therefore, the first sling 210 can pass through the limiting hole 130 without the pin 300 connected (e.g., ...). Figure 5 (As shown), then the first sling 210 is lowered to a position close to the ground. Workers can then connect the pin 300 to the lower end of the first sling 210 on the ground, and then use hoisting equipment to lift the first sling 210 to the position corresponding to the radial through hole 71 to install the pin 300. When the sling limiting assembly 100 is not set, for example, when the radial through hole 71 is located on the uppermost tower section of the corresponding tower section (e.g.) Figure 2As shown, the pin 300 can be directly connected to the lower end of the first sling 210 and the first sling 210 can be lowered to the position corresponding to the radial through hole 71.

[0060] When pin 300 cannot pass through or has difficulty passing through limiting hole 130, after hoisting one tower section, when disassembling the tower hoisting fixture, it can be done as follows: Figure 11 As shown, after disconnecting the sling limiting assembly 100 and the connection between the pin 300 and the tower section 70, the pin 300 is lifted by the first sling 210. Then, when the pin 300 is lifted to the position of the sling limiting assembly 100, the interference between the two is used to lift the pin 300 together with the sling limiting assembly 100 until it is detached from the tower section 70. Figure 11 As shown.

[0061] In addition, the tower construction platform is usually set inside the tower, that is, the workers operate inside the tower section 70, while the pin 300 is located outside the tower section 70. Furthermore, the radial through hole 71 may be located at a high position above the ground, making it difficult to operate from the outside of the tower section 70. Therefore, the installation of the pin 300 presents certain difficulties.

[0062] Therefore, the pin 300 according to an embodiment of the present invention may further include a pull ring 350 disposed at the second end of the pin body 310. The pull ring 350 functions as follows: after the pin 300 is moved to a predetermined position outside the tower wall by the first lifting strap 210, a worker on the installation platform (not shown) located inside the tower section 70 can use a hook (not shown) or other hooking member to hook the pull ring 350 through the radial through hole 71, so as to smoothly pull the pin body 310 of the pin 300 into the radial through hole 71. The pull ring 350 may have, for example... Figure 5 The pull ring 350 is shaped as shown in the figure, and its two ends can be connected to the second end of the pin body 310 by fastening members (e.g., screws). However, the shape of the pull ring 350 is not limited to this, as long as it can be pulled by a hook and is helpful for inserting the pin body 310 into the radial through hole 71.

[0063] As described above, the second limiting protrusion 330 is detachably connected to the second end of the pin body 310. Therefore, after the pin body 310 is inserted into the radial through hole 71 via the pull ring 350, the pull ring 350 can be removed, and the second limiting protrusion 330 can be installed to the second end of the pin body 310. However, the present invention is not limited thereto. The second limiting protrusion 330 may be formed with a groove or hole that avoids the pull ring 350 from passing through, so that the second limiting protrusion 330 can be installed to the second end of the pin body 310 without removing the pull ring 350. That is, the second limiting protrusion 330 and the pull ring 350 may be misaligned, so that both are installed at the second end of the pin body 310.

[0064] Figure 12 A schematic diagram of the structure of the pin support 400 of the present invention installed on the tower wall is shown.

[0065] The tower hoisting fixture according to an embodiment of the present invention may further include a pin support 400, which provides support for the pin 300. During the installation of the pin 300, the pin 300 is held on the pin support 400 to prevent deviation from the position of the radial through hole 71. The pin support 400 may include a pin support plate 410 and a fixing plate 420. Before lowering the first lifting strap 210 connected to the pin 300 to the position corresponding to the radial through hole 71, the pin support 400 may be installed first, such that the pin support plate 410 is inserted into the radial through hole 71, arranged horizontally and protruding further outward from the tower wall, and fixed to the tower wall by the fixing plate 420. The pin support 400 may be made of high-strength alloy steel, thus having excellent load-bearing capacity and resistance to deformation.

[0066] Furthermore, to better support the pin 300, the width of the outer end of the pin support plate 410 is preferably greater than the width of the radial through hole 71. In this case, the height of the radial through hole 71 can be greater than the width of the pin support plate 410. When installing the pin support 400, the pin support plate 410 can be erected and extended from the inner wall of the tower section 70 through the radial through hole 71 to the outer side. Then, the pin support 400 can be rotated to move the fixing plate 420 to the predetermined installation position and keep it horizontal.

[0067] According to an embodiment of the present invention, in order to install the pin support 400 to the tower section 70, a threaded sleeve can be pre-embedded at a corresponding position on the inner wall of the tower section 70, so that the fixing plate 420 can be detachably installed to the tower section 70 by means of fastening members (e.g., screws).

[0068] According to an embodiment of the present invention, a plurality of radial through holes 71 are formed on the tower section 70. These radial through holes 71 are located at the same height on the tower section 70 and can be uniformly or symmetrically arranged along the circumferential direction of the tower section 70. In this case, when a plurality of pins 300 (adapters 30) are inserted into the tower section 70, the force exerted by the lifting straps 200 on the pins 300 can be more evenly distributed around the circumference of the tower section 70, avoiding localized stress concentration. Furthermore, the uniformly distributed plurality of pins 300, serving as lifting point connectors penetrating the tower wall, can provide multiple reliable connection points for lifting, enhancing the stability of the tower during lifting and reducing the risk of swaying and tilting.

[0069] Figure 13 and Figure 14 A schematic diagram of the structure of the lifting support 10 used in the tower lifting method according to the present invention is shown.

[0070] The tower hoisting fixture of the present invention further includes a hoisting bracket 10, which connects the upper end of the sling 200 to the hoisting equipment described above. The hoisting bracket 10 has a first sling connection portion 610 and a second sling connection portion 620. The corresponding tower section 70 can be hoisted by connecting the upper end of the first sling 210 to the first sling connection portion 610 and the upper end of the second sling 220 to the second sling connection portion 620.

[0071] As shown in the figure, the hoisting support 10 may include a hoisting beam 80 and a sling installation fixture 60. The sling installation fixture 60 includes a connecting plate 61 and a balance frame 62 rotatably mounted on the lower end of the connecting plate 61. The first sling connection part 610 and the second sling connection part 620 are respectively provided on both sides of the balance frame 62. The sling installation fixture 60 can be connected to the hoisting beam 80 by mounting the upper end of the connecting plate 61 on the hoisting beam 80.

[0072] Normally, the lengths of the first sling 210 and the second sling 220 are not guaranteed to be exactly the same, so the forces on the first sling 210 and the second sling 220 will be unbalanced. According to the embodiment of this application, the middle part of the balance frame 62 is rotatably connected to the lower end of the connecting plate 61, which can automatically adjust the tension distribution of the first sling 210 and the second sling 220 to a certain extent, so that the sling 200 can maintain a balanced force state.

[0073] In addition, in order to ensure that the first sling 210 and the second sling 220 are only subjected to force in the vertical direction and to avoid the existence of horizontal component force as much as possible, the upper end of the first sling 210 is rotatably connected to the first sling connection part 610, and the upper end of the second sling 220 is rotatably connected to the second sling connection part 620.

[0074] Multiple lifting points 81 can be set at the lower end of the lifting beam 80. During the lifting operation, the appropriate lifting point 81 can be selected according to the diameter of the tower section 70, so that the lifting sling installation tool 60 can be installed on the corresponding lifting point.

[0075] According to an embodiment of the present invention, the tower hoisting method using the above-described tower hoisting fixture may include the following steps: the sling limiting assembly 100 may be installed at a corresponding position on the tower wall according to the position of the radial through hole 71 (if the radial through hole 71 is formed on the uppermost tower section, the step of installing the sling limiting assembly 100 may be omitted); a suitable lower lifting point 81 may be selected according to the diameter of the tower, and the sling installation fixture 60 may be installed at the corresponding lower lifting point 81; after the sling 200 passes through the sling limiting assembly 100, a pin 300 is connected to the first sling 210, and with the assistance of the sling limiting ring 340, the pin 300 is ensured to be stably suspended on the first sling 210; then, under the support of the pin support member 400, the pin 300 is installed in the radial through hole 71; a second sling 220 is hooked at the second end of the pin 300; then, the hoisting equipment lifts the hoisting beam 80 to achieve the hoisting of the corresponding tower section 70.

[0076] However, the tower hoisting method of the present invention is not limited to the above steps, and the hoisting steps can be adjusted or replaced according to actual needs. For example, the position of the lower hoisting point 81 can be selected first, the hoisting sling installation fixture 60 can be installed, and then the hoisting sling limiting assembly 100 can be installed.

[0077] According to another embodiment of the present invention, a tower can also be provided, which can be installed by the tower hoisting fixture and tower hoisting method described above. The tower wall is provided with the radial through hole described above, which can cooperate with the adapter.

[0078] According to another embodiment of the present invention, a wind turbine generator set may also be provided, which includes the tower described above.

[0079] The tower hoisting method according to the present invention can reduce the impact of the lateral force of the slings on the tower and avoid tower deformation. Furthermore, the tower hoisting method according to the present invention makes the hoisting process safer and easier to operate, improving the safety and stability of tower hoisting.

[0080] The features, structures, or characteristics described in this invention can be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a full understanding of embodiments of the invention. However, those skilled in the art will recognize that the technical solutions of the invention can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of the invention.

Claims

1. A tower hoisting method, wherein a tower section (70) is hoisted to a predetermined position using tower hoisting fixtures, characterized in that, The tower hoisting fixture includes an adapter (30) and a sling (200), and the tower hoisting method includes: The adapter is disposed in the radial through hole (71) on the tower wall of the tower section (70); The tower section (70) is vertically lifted by connecting the hoisting equipment to the upper end of the sling (200). During the lifting process, the lower end of the sling (200) applies an upward force to the tower section (70) through the adapter.

2. The tower hoisting method according to claim 1, characterized in that, The tower hoisting method also includes: Multiple tower sections are bonded together with concrete grout to form the tower section (70), and the radial through hole (71) is provided on the tower wall of the lowest tower section.

3. The tower hoisting method according to claim 2, characterized in that, The tower hoisting method also includes: After multiple tower sections are bonded together with concrete grout, adjacent tower sections are connected to each other by connecting bolts or connecting cables, or by the first prestressed cable (500), thereby forming the tower section (70).

4. The tower hoisting method according to claim 1, characterized in that, The tower hoisting method also includes: Multiple tower sections are bonded together with concrete grout and connected to each other by a first prestressed cable (500) to form the tower section (70). The first prestressed cable (500) passes through the multiple tower sections in sequence, and the radial through hole (71) is set on the tower wall of the uppermost tower section.

5. The tower hoisting method according to any one of claims 1-4, characterized in that, The tower hoisting method also includes: Multiple tower sections (70) are hoisted in sequence, and adjacent tower sections (70) are bonded together with concrete grout. Then, prestress is applied to the multiple tower sections (70) by a second prestressed cable (600).

6. The tower hoisting method according to claim 5, characterized in that, The second prestressed cable (600) is an external prestressed cable, which is set on the inner side of the tower wall of the multiple tower sections (70). The lower end of the second prestressed cable (600) is connected to the foundation (20) of the wind turbine generator set, and the upper end of the second prestressed cable (600) is connected to the upper end of the uppermost tower section (70).

7. The tower hoisting method according to claim 1, characterized in that, The tower hoisting fixture also includes a sling limiting assembly (100), and the tower hoisting method further includes: The sling limiting assembly (100) is provided at the top of the tower section (70) to keep the sling (200) at a distance from the tower wall.

8. The tower hoisting method according to claim 7, characterized in that, The sling limiting assembly (100) includes a mounting portion (110) and a limiting portion (120), the limiting portion (120) extending laterally from the mounting portion (110) and forming a limiting hole (130). The tower hoisting method also includes: Before inserting the adapter into the radial through hole (71), the mounting part (110) is fixed to the tower wall, and the lower end of the sling (200) extends downward through the limiting hole (130).

9. The tower hoisting method according to any one of claims 1-4 and 7 and 8, characterized in that, The adapter is a pad or a hollow sleeve, which is disposed between the wall of the radial through hole (71) and the lifting strap (200), so that the lifting strap (200) passes through the radial through hole (71) and lifts the tower section (70) by applying an upward force to the adapter (30).

10. The tower hoisting method according to any one of claims 1-4 and 7 and 8, characterized in that, The adapter is a pin (300), the end of which can extend out of the radial through hole (71), and the lower end of the sling (200) can be attached to the pin (300) to lift the tower section (70) by applying an upward force to the pin (300).

11. The tower hoisting method according to claim 10, characterized in that, The sling (200) includes a first sling (210) and a second sling (220). The two ends of the pin can extend from the two ends of the radial through hole (71), and the lower ends of the first sling (210) and the second sling (220) can be hooked onto the two ends of the pin (300).

12. The tower hoisting method according to claim 11, characterized in that, The pin (300) includes a pin body (310), a first limiting protrusion (320) disposed at a first end of the pin body (310), and a second limiting protrusion (330) detachably mounted to a second end of the pin body (310). The step of disposing the adapter (30) in the radial through hole (71) includes: The second end of the pin body (310) is passed through the radial through hole (71), and the second limiting protrusion (330) is installed on the second end of the pin body (310).

13. The tower hoisting method according to claim 12, characterized in that, The pin (300) further includes a sling limiting ring (340), which is mounted on the first limiting protrusion (320) and is used to limit the first sling (210) to the first end of the pin (300) when the lower end of the first sling (210) is sleeved on the first end of the pin (300). The method for hoisting the tower section (70) includes: Before placing the pin (300) in the radial through hole (71), the lower end of the first sling (210) is lowered to the position corresponding to the radial through hole (71), and the second end of the pin body (310) is pulled into the radial through hole (71) and passes through the radial through hole (71).

14. The tower hoisting method according to claim 12, characterized in that, The tower hoisting fixture also includes a pin support (400), which includes a pin support plate (410) and a fixing plate (420). Before the first sling (210) connected to the pin (300) is lowered to the position corresponding to the radial through hole (71), the pin support plate (410) is inserted into the radial through hole (71) and arranged horizontally and protruding further outward from the tower wall.

15. The tower hoisting method according to claim 11, characterized in that, The tower hoisting fixture also includes a hoisting bracket (10), which has a first sling connection (610) and a second sling connection (620). The tower hoisting method further includes: connecting the upper end of the first sling (210) to the first sling connection part (610) and connecting the upper end of the second sling (220) to the second sling connection part (620).

16. The tower hoisting method according to claim 15, characterized in that, The hoisting support (10) includes a hoisting beam (80) and a sling installation fixture (60). The sling installation fixture (60) includes a connecting plate (61) and a balance frame (62) rotatably mounted on the lower end of the connecting plate (61). The first sling connection part (610) and the second sling connection part (620) are respectively disposed on both sides of the balance frame (62). The upper end of the connecting plate (61) is mounted on the hoisting beam (80). The upper end of the first sling (210) is rotatably connected to the first sling connection part (610), and the upper end of the second sling (220) is rotatably connected to the second sling connection part (620).

17. A tower, characterized in that, The tower is installed using the tower hoisting method as described in any one of claims 1-16. The tower wall is provided with the radial through hole (71), which can cooperate with the adapter.

18. A wind turbine generator set, characterized in that, The wind turbine generator set includes the tower as described in claim 17.

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