A wind power pile foundation leveling device

Abstract

This invention provides a wind turbine foundation leveling device, comprising a plurality of telescopic anchors evenly distributed around the wind turbine foundation. The telescopic anchors, used for supporting and leveling the wind turbine foundation, include a telescopic component and an anchor head. The telescopic component adjusts the length of the anchor, with one end connected to the wind turbine foundation and the other end connected to the anchor head. The anchor head is fixedly connected to the ground and is a retractable umbrella-shaped anchor head. This invention can improve the horizontal and vertical bearing capacity of wind turbine foundations and achieve leveling of the wind turbine foundations.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind power pile foundation technology, and in particular to a wind power pile foundation leveling device. Background Technology

[0002] Offshore wind turbine foundations undergo displacement and deformation under prolonged wind, wave, and current coupled loads, resulting in increased rotation angles. Although redundancy is provided during construction, deformation exceeding allowable displacement and rotation angles may still occur during long-term use, shortening the service life of the offshore wind turbine foundations. Therefore, to ensure the normal operation of offshore wind turbine foundations throughout their service life and extend their service life, a wind turbine foundation leveling device is proposed.

[0003] Utility model patent CN207944474U discloses a leveling device for monopile foundations in offshore wind power equipment. The offshore wind power equipment utilizes multiple underwater thrusters to simultaneously drive an active drive ring, causing it to rotate around its own axis. This, in turn, drives a push rod to rotate around its own axis under the action of bevel gears. Furthermore, under the influence of a synchronous rotation structure, the push rod rotates while simultaneously making axial feed motion, ultimately driving the leveling blocks to move linearly. The simultaneous movement of multiple leveling blocks eventually returns the axis of the monopile foundation to its initial position, achieving the leveling action. However, the aforementioned leveling device has a relatively complex structure and can only be used for leveling monopile foundations after they have tilted. Utility Model Content

[0004] The purpose of this utility model is to provide a wind turbine pile foundation leveling device to overcome the defects in the existing technology, which can improve the horizontal and vertical bearing capacity of the wind turbine pile foundation and realize the leveling of the wind turbine pile foundation.

[0005] To achieve the above objectives, this utility model provides a wind turbine pile foundation leveling device, comprising a plurality of expansion anchors evenly distributed around the wind turbine pile foundation;

[0006] The telescopic anchor is used to support and level the wind turbine pile foundation. It includes a telescopic component and an anchor head. The telescopic component is used to adjust the length of the telescopic anchor. One end of the component is connected to the wind turbine pile foundation, and the other end is connected to the anchor head. The anchor head is used to fix the anchor to the ground. The anchor head is a retractable umbrella-type anchor head.

[0007] This invention involves arranging several telescopic anchors around a wind turbine pile foundation. Each telescopic anchor includes a telescopic component and an anchor head, which are connected. The anchor head is inserted into the ground at an angle, and the telescopic component is connected to the wind turbine pile foundation. The telescopic anchors can improve the horizontal and vertical bearing capacity of the wind turbine pile foundation, support the wind turbine pile foundation, and reduce the tilting of the wind turbine pile foundation.

[0008] When the wind turbine pile foundation tilts, the expansion joint moves in the direction of the tilt. Under the action of the ground soil and the expansion joint, the anchor head set on the expansion anchor that is away from the tilt direction of the wind turbine pile foundation opens, which increases the friction between the anchor head and the ground soil, improves the pull-out resistance of the wind turbine pile foundation, and prevents the wind turbine pile foundation from tilting further.

[0009] When the tilt of the wind turbine pile foundation is small, the expansion anchors set in the tilt direction of the wind turbine pile foundation support the wind turbine pile foundation, and the anchor heads set on the expansion anchors opposite the tilt direction of the wind turbine pile foundation open to connect with the ground, pull the wind turbine pile foundation to prevent it from tilting further, and use the ground soil to provide reaction force for leveling and prevent the wind turbine pile foundation from becoming unstable.

[0010] When the wind turbine foundation has a significant tilt, the expansion anchors installed along the tilt direction are extended, while those opposite the tilt direction are shortened. This adjusts the wind turbine foundation to be perpendicular to the ground, increasing its stability. Furthermore, the direction of movement of the wind turbine foundation can be freely adjusted by choosing the location and angle of the expansion anchors. After leveling, concrete can be used to securely connect the wind turbine foundation to the ground, as well as the anchor heads, thus re-establishing a fixed connection between the wind turbine foundation and the ground.

[0011] Optionally, the anchor head includes a first hoop, a first connecting rod, a second connecting rod, and a second hoop connected in sequence, wherein the first hoop and the second hoop are both fixedly mounted on the telescopic assembly;

[0012] The first connecting rod is provided in multiple ways, and each of the first connecting rods is slidably connected to the first hoop. The plurality of second connecting rods are provided in multiple ways, and each of the first connecting rods is rotatably connected to its corresponding second connecting rod. The plurality of second connecting rods are slidably connected to the second hoop.

[0013] When the anchor head is inserted into the ground, the first connecting rod slides to the upper part of the first hoop, and the second connecting rod slides to the upper part of the second hoop, so that the anchor head is retracted as much as possible to reduce the installation resistance of the anchor head.

[0014] When the wind turbine foundation tilts, the expansion joint moves in the direction of tilt. Under the interaction of the ground soil and the expansion joint, the anchor head on the expansion anchor, which is opposite to the tilt direction of the wind turbine foundation, opens, increasing the friction between the anchor head and the ground soil. This improves the pull-out resistance of the wind turbine foundation and prevents it from tilting further. Furthermore, the first connecting rod is connected to the middle of the second connecting rod; that is, when the anchor head opens, the outermost end of the second connecting rod extends beyond the outermost end of the first connecting rod, further increasing the friction between the ground soil and the anchor head.

[0015] Optionally, the first hoop is provided with a first sliding groove, and the first connecting rod is provided with a first slider that matches the first sliding groove.

[0016] When the anchor head is inserted into the ground, the first connecting rod slides to the upper part of the first sliding groove, causing the anchor head to contract to its minimum and reducing the installation resistance of the anchor head; when the wind turbine pile foundation tilts, the first connecting rod on the anchor head that is away from the tilt direction of the wind turbine pile foundation gradually slides to the lower part of the first sliding groove, causing the anchor head to open to its maximum and increasing the friction between the anchor head and the ground soil.

[0017] Optionally, the second hoop is provided with a second sliding groove, and the second connecting rod is provided with a second slider that matches the second sliding groove.

[0018] When the anchor head is inserted into the ground, the second connecting rod slides to the lower part of the second sliding groove, reducing the installation resistance of the anchor head; when the wind turbine pile foundation tilts, the second connecting rod on the anchor head that is away from the tilt direction of the wind turbine pile foundation gradually slides to the upper part of the second sliding groove, so that the anchor head opens to the maximum and the friction between the anchor head and the ground soil increases.

[0019] Optionally, the anchor head may also include a conical seat disposed at the end of the expansion joint away from the pile foundation, so as to facilitate the insertion of the anchor head into the soil.

[0020] Optionally, the telescopic assembly includes a first support rod, a sleeve, and a second support rod connected in sequence;

[0021] The first support rod is movably sleeved on the outside of the sleeve, the sleeve is threadedly connected to the second support rod, and the anchor head is set on the second support rod.

[0022] The first and second hoop rings are mounted on the second support rod. The first support rod is movably sleeved on the outside of the sleeve, and the sleeve is threadedly connected to the second support rod. Both the first and second support rods are fixed. Rotating the first sleeve keeps the distance between the first support rod and the first sleeve constant, while changing the distance between the first sleeve and the second support rod. This adjusts the distance between the first and second support rods, thereby changing the length of the telescopic assembly and achieving length adjustment of the telescopic anchor. Furthermore, the telescopic assembly is detachable and easily retrievable.

[0023] When the first sleeve and the second support rod are connected by threads, a certain margin is ensured for secondary leveling if the wind power pile foundation tilts later.

[0024] Optionally, the inner wall of the first support rod is provided with a groove, and the sleeve is provided with a protrusion at the corresponding position, the protrusion sliding in the groove.

[0025] The first support rod has an opening at one end near the sleeve, and the opening of the first support rod is movably fitted onto the sleeve. An annular groove is provided on the inner wall of the opening of the first support rod, and a protrusion is provided at the corresponding position of the sleeve. The protrusion slides in the groove.

[0026] Optionally, the expansion joint is welded to the pile foundation.

[0027] Optionally, several of the aforementioned telescopic anchors are evenly arranged around the wind turbine pile foundation.

[0028] Beneficial effects:

[0029] 1. This utility model arranges several telescopic anchors around the wind turbine pile foundation. The telescopic anchor includes a telescopic component and an anchor head. The telescopic component and the anchor head are connected. The anchor head is inserted into the ground at an angle. The telescopic component is connected to the wind turbine pile foundation. The telescopic anchor can improve the horizontal and vertical bearing capacity of the wind turbine pile foundation, support the wind turbine pile foundation, and reduce the tilt of the wind turbine pile foundation.

[0030] When the wind turbine pile foundation tilts, the expansion joint moves in the direction of the tilt. Under the action of the ground soil and the expansion joint, the anchor head set on the expansion anchor that is away from the tilt direction of the wind turbine pile foundation opens, which increases the friction between the anchor head and the ground soil, improves the pull-out resistance of the wind turbine pile foundation, and prevents the wind turbine pile foundation from tilting further.

[0031] When the tilt of the wind turbine pile foundation is small, the expansion anchors set in the tilt direction of the wind turbine pile foundation support the wind turbine pile foundation, and the anchor heads set on the expansion anchors opposite the tilt direction of the wind turbine pile foundation are connected to the ground to hold the wind turbine pile foundation and prevent it from tilting further. The ground soil provides reaction force to level it and prevent the wind turbine pile foundation from becoming unstable.

[0032] When the wind turbine foundation has a significant tilt, the expansion anchors installed along the tilt direction are extended, while those opposite the tilt direction are shortened. This adjusts the wind turbine foundation to be perpendicular to the ground, increasing its stability. Furthermore, the direction of movement of the wind turbine foundation can be freely adjusted by choosing the location and angle of the expansion anchors. After leveling, concrete can be used to securely connect the wind turbine foundation to the ground, as well as the anchor heads, thus re-establishing a fixed connection between the wind turbine foundation and the ground.

[0033] 2. The anchor head of this utility model includes a first hoop ring, a first connecting rod, a second connecting rod, and a second hoop ring connected in sequence, wherein the first hoop ring and the second hoop ring are both fixedly mounted on the telescopic assembly;

[0034] The first connecting rod is provided in multiple ways, and each of the first connecting rods is slidably connected to the first hoop. The plurality of second connecting rods are provided in multiple ways, and each of the first connecting rods is rotatably connected to its corresponding second connecting rod. The plurality of second connecting rods are slidably connected to the second hoop.

[0035] When the anchor head is inserted into the ground, the first connecting rod slides to the upper part of the first hoop, and the second connecting rod slides to the upper part of the second hoop, so that the anchor head is retracted as much as possible to reduce the installation resistance of the anchor head.

[0036] When the wind turbine foundation tilts, the expansion joint moves in the direction of tilt. Under the interaction of the ground soil and the expansion joint, the anchor head on the expansion anchor, which is opposite to the tilt direction of the wind turbine foundation, opens, increasing the friction between the anchor head and the ground soil. This improves the pull-out resistance of the wind turbine foundation and prevents it from tilting further. Furthermore, the first connecting rod is connected to the middle of the second connecting rod; that is, when the anchor head opens, the outermost end of the second connecting rod extends beyond the outermost end of the first connecting rod, further increasing the friction between the ground soil and the anchor head. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a structural diagram of the wind turbine pile foundation leveling device disclosed in this utility model;

[0039] Figure 2 This is a front view of the telescopic component in the wind turbine pile foundation leveling device disclosed in this utility model.

[0040] Figure label:

[0041] label name label name 1 Wind power pile foundation 221 First hoop 2 Expansion anchor 222 First sliding groove 21 Telescopic components 223 First connecting rod 211 First support rod 224 Second hoop 212 First sleeve 225 Second sliding groove 213 Second support rod 226 Second connecting rod 22 Anchor head 227 Conical seat

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0045] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] See Figure 1 and 2 According to an embodiment of the present invention, a wind turbine pile foundation leveling device includes a plurality of telescopic anchors 2 evenly distributed around the wind turbine pile foundation 1.

[0047] The telescopic anchor 2 is used to support and level the wind turbine pile foundation 1. It includes a telescopic component 21 and an anchor head 22. The telescopic component 21 is used to adjust the length of the telescopic anchor 2. One end of the component is connected to the wind turbine pile foundation 1, and the other end is connected to the anchor head 22. The anchor head 22 is used to fix the anchor to the ground. The anchor head 22 is a retractable umbrella-type anchor head.

[0048] Specifically, this invention involves arranging several telescopic anchors 2 around the wind turbine foundation 1. Each telescopic anchor 2 includes a telescopic component 21 and an anchor head 22, which are connected. The anchor head 22 is inserted into the ground at an angle. The telescopic component 21 is connected to the wind turbine foundation 1. The telescopic anchors 2 can improve the horizontal and vertical bearing capacity of the wind turbine foundation 1, support the wind turbine foundation 1, and reduce the tilting of the wind turbine foundation 1. In this embodiment, the anchor head 22 is inserted into the ground at a 45° angle.

[0049] When the wind turbine pile foundation 1 tilts, the expansion joint 21 moves in the tilting direction of the wind turbine pile foundation 1. Under the action of the ground soil and the expansion joint 21, the anchor head 22 set on the expansion anchor 2 that is away from the tilting direction of the wind turbine pile foundation 1 opens, which increases the friction between the anchor head 22 and the ground soil, improves the pull-out resistance of the wind turbine pile foundation 1, and prevents the wind turbine pile foundation 1 from tilting further.

[0050] When the tilt of the wind turbine pile foundation 1 is small, the expansion anchor 2 set in the tilt direction of the wind turbine pile foundation 1 supports the wind turbine pile foundation 1. The anchor head 22 set on the expansion anchor 2 opposite to the tilt direction of the wind turbine pile foundation 1 opens and connects to the ground, pulling the wind turbine pile foundation 1 to prevent it from tilting further. The ground soil provides reaction force to level it and prevent the wind turbine pile foundation 1 from becoming unstable.

[0051] When the wind turbine foundation 1 has a large tilt, the expansion anchor 2 installed in the tilt direction of the wind turbine foundation 1 is extended, and the expansion anchor 2 installed away from the tilt direction of the wind turbine foundation 1 is shortened, adjusting the wind turbine foundation 1 to be perpendicular to the ground, increasing the stability of the wind turbine foundation 1. Furthermore, the direction of movement of the wind turbine foundation 1 can be freely adjusted by freely choosing the position and angle of the expansion anchor 2. After leveling is completed, concrete can be used to fix the wind turbine foundation 1 to the ground, and to fix the anchor head 22 to the ground, thereby re-establishing a fixed connection between the wind turbine foundation 1 and the ground.

[0052] In this embodiment, a total of four sets of expansion anchors 2 are provided, evenly distributed in the four directions of the wind turbine pile foundation 1. The number of expansion anchors 2 can be adjusted according to requirements.

[0053] See Figure 2 In some embodiments of this utility model, the anchor head 22 includes a first hoop 221, a first connecting rod 223, a second connecting rod 226 and a second hoop 224 connected in sequence, and the first hoop 221 and the second hoop 224 are both fixedly mounted on the telescopic assembly 21.

[0054] The first connecting rod 223 is provided in multiple ways, and each of the first connecting rods 223 is slidably connected to the first hoop 221. The second connecting rod 226 is provided in multiple ways, and each of the first connecting rods 223 is rotatably connected to its corresponding second connecting rod 226. The second connecting rod 226 is slidably connected to the second hoop 224.

[0055] When the anchor head 22 is inserted into the ground, the first connecting rod 223 slides to the upper part of the first hoop 221, and the second connecting rod 226 slides to the upper part of the second hoop 224, so that the anchor head 22 is retracted as much as possible to reduce the installation resistance of the anchor head 22.

[0056] When the wind turbine foundation 1 tilts, the expansion joint 21 moves in the tilting direction of the wind turbine foundation 1. Under the action of the ground soil and the expansion joint 21, the anchor head 22 set on the expansion anchor 2 away from the tilting direction of the wind turbine foundation 1 opens, increasing the friction between the anchor head 22 and the ground soil, improving the pull-out resistance of the wind turbine foundation, and preventing the wind turbine foundation 1 from tilting further. Furthermore, the first connecting rod 223 is connected to the middle of the second connecting rod 226. That is, when the anchor head 22 opens, the outermost end of the second connecting rod 226 extends beyond the outermost end of the first connecting rod 223, further increasing the friction between the ground soil and the anchor head 22.

[0057] In this embodiment, eight sets of the first connecting rod 223 and the second connecting rod 226 are provided, and they remain in a retracted state during the piling and installation of the anchor head 22. The number of the first connecting rod 223 and the second connecting rod 226 can be adjusted according to requirements.

[0058] See Figure 2 In some embodiments of this utility model, the first hoop 221 is provided with a first sliding groove 222, and the first connecting rod 223 is provided with a first slider that matches the first sliding groove 222.

[0059] When the anchor head 22 is inserted into the ground, the first connecting rod 223 slides to the upper part of the first sliding groove 222, causing the anchor head 22 to contract to its minimum, reducing the installation resistance of the anchor head 22; when the wind turbine pile foundation 1 tilts, the first connecting rod 223 on the anchor head 22 facing away from the tilt direction of the wind turbine pile foundation 1 gradually slides to the lower part of the first sliding groove 222, causing the anchor head 22 to open to its maximum, increasing the friction between the anchor head 22 and the ground soil.

[0060] In this embodiment, the number of first sliding grooves 222 corresponds to the number of first connecting rods 223, and there are eight sets. The number of first sliding grooves 222 can be adjusted according to requirements.

[0061] See Figure 2 In some embodiments of this utility model, the second hoop 224 is provided with a second sliding groove 225, and the second connecting rod 226 is provided with a second slider that matches the second sliding groove 225.

[0062] When the anchor head 22 is inserted into the ground, the second connecting rod 226 slides to the lower part of the second sliding groove 225, reducing the installation resistance of the anchor head 22; when the wind turbine pile foundation 1 tilts, the second connecting rod 226 on the anchor head 22 facing away from the tilt direction of the wind turbine pile foundation 1 gradually slides to the upper part of the second sliding groove 225, so that the anchor head 22 opens to the maximum, and the friction between the anchor head 22 and the ground soil increases.

[0063] In this embodiment, the number of second sliding grooves 225 corresponds to the number of second connecting rods 226, and there are eight sets. The number of second connecting rods 226 can be adjusted according to requirements.

[0064] See Figure 2 In some embodiments of this utility model, the anchor head 22 further includes a conical seat 227 disposed at the end of the telescopic component 21 away from the pile foundation, so as to facilitate the insertion of the anchor head 22 into the soil.

[0065] See Figure 2 In some embodiments of this utility model, the telescopic component 21 includes a first support rod 211, a sleeve 212, and a second support rod 213 connected in sequence.

[0066] The first support rod 211 is movably sleeved on the outside of the sleeve 212, the sleeve 212 is threadedly connected to the second support rod 213, and the anchor head 22 is disposed on the second support rod 213.

[0067] The first hoop 221 and the second hoop 224 are mounted on the second support rod 213. The first support rod 211 is movably sleeved on the outside of the sleeve 212, and the sleeve 212 is threadedly connected to the second support rod 213. Both the first support rod 211 and the second support rod 213 are fixed. Rotating the first sleeve 212 keeps the distance between the first support rod 211 and the first sleeve 212 constant, while changing the distance between the first sleeve 212 and the second support rod 213. This adjusts the distance between the first support rod 211 and the second support rod 213, thereby changing the length of the telescopic component 21 and achieving length adjustment of the telescopic anchor 2. Furthermore, the telescopic component 21 is detachable and easily retrievable.

[0068] When the first sleeve 212 and the second support rod 213 are threaded together, a certain margin is ensured for secondary leveling if the wind power pile foundation 1 tilts later.

[0069] See Figure 1 In some embodiments of this utility model, the inner wall of the first support rod 211 is provided with a groove, and the sleeve 212 is provided with a protrusion at the corresponding position, and the protrusion slides in the groove.

[0070] The first support rod 211 has an opening at one end near the sleeve 212. The opening of the first support rod 211 is movably sleeved on the sleeve 212. An annular groove is provided on the inner wall of the opening of the first support rod 211. A protrusion is provided at the corresponding position of the sleeve 212. The protrusion slides in the groove.

[0071] See Figure 1 In some embodiments of this utility model, the telescopic component 21 is welded to the pile foundation.

[0072] Since the tilt angle of the wind turbine pile foundation 1 is generally within 2° under extreme conditions, the expansion anchor 2 has little impact on the welding effect between the expansion component 21 and the pile foundation when leveling the wind turbine pile foundation 1.

[0073] See Figure 1 and 2 The specific workflow of a wind turbine pile foundation leveling device includes the following steps:

[0074] S1. Several expansion anchors 2 are arranged around the wind turbine pile foundation 1. The expansion anchor 2 includes an expansion component 21 and an anchor head 22, and the expansion component 21 and the anchor head 22 are connected.

[0075] S2. The anchor head 22 is inserted into the ground at an angle, and the telescopic component 21 is connected to the wind turbine pile foundation 1.

[0076] S3. When the inclination of the wind turbine pile foundation 1 is small, the expansion anchor 2 set in the inclination direction of the wind turbine pile foundation 1 supports the wind turbine pile foundation 1, and the anchor head 22 set on the expansion anchor 2 away from the inclination direction of the wind turbine pile foundation 1 opens to prevent the wind turbine pile foundation 1 from continuing to tilt.

[0077] When the wind turbine pile foundation 1 is tilted at a large degree, the telescopic anchor 2 set in the tilt direction of the wind turbine pile foundation 1 is extended, and the telescopic anchor 2 that is away from the tilt direction of the wind turbine pile foundation 1 is shortened, so that the wind turbine pile foundation 1 is adjusted to be perpendicular to the ground.

[0078] According to the design specification for wind turbine foundations of offshore wind farm projects NB / T 10105-2018, when the tilt angle of wind turbine pile 1 is within 0.5°, the expansion anchor 2 set in the tilt direction of wind turbine pile 1 supports wind turbine pile 1, and the anchor head 22 set on the expansion anchor 2 away from the tilt direction of wind turbine pile 1 opens to prevent wind turbine pile 1 from tilting further.

[0079] When the tilt angle of the wind turbine pile foundation 1 exceeds 0.5°, the telescopic anchor 2 set in the tilt direction of the wind turbine pile foundation 1 is extended, the telescopic anchor 2 that is away from the tilt direction of the wind turbine pile foundation 1 is shortened, and the wind turbine pile foundation 1 is adjusted to be perpendicular to the ground.

[0080] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A wind turbine pile foundation leveling device, characterized in that, Includes several expansion anchors (2) evenly distributed around the wind turbine pile foundation (1); The telescopic anchor (2) is used to support and level the wind turbine pile foundation (1). It includes a telescopic component (21) and an anchor head (22). The telescopic component (21) is used to adjust the length of the telescopic anchor (2). One end of the component is connected to the wind turbine pile foundation (1), and the other end is connected to the anchor head (22). The anchor head (22) is used to fix the anchor head to the ground. The anchor head (22) is a retractable umbrella-type anchor head.

2. The wind turbine pile foundation leveling device according to claim 1, characterized in that, The anchor head (22) includes a first hoop (221), a first connecting rod (223), a second connecting rod (226), and a second hoop (224) connected in sequence. The first hoop (221) and the second hoop (224) are both fixedly mounted on the telescopic assembly (21). The first connecting rod (223) is provided in multiple ways, and each of the first connecting rods (223) is slidably connected to the first hoop (221). The plurality of second connecting rods (226) is provided in multiple ways, and each of the first connecting rods (223) is rotatably connected to its corresponding second connecting rod (226). The plurality of second connecting rods (226) are slidably connected to the second hoop (224).

3. The wind turbine pile foundation leveling device according to claim 2, characterized in that, The first hoop (221) is provided with a first sliding groove (222), and the first connecting rod (223) is provided with a first slider that matches the first sliding groove (222).

4. The wind turbine pile foundation leveling device according to claim 2, characterized in that, The second hoop (224) is provided with a second sliding groove (225), and the second connecting rod (226) is provided with a second slider that matches the second sliding groove (225).

5. The wind turbine pile foundation leveling device according to claim 1, characterized in that, The anchor head (22) also includes a conical seat (227) disposed at the end of the telescopic assembly (21) away from the wind turbine pile foundation (1).

6. The wind turbine pile foundation leveling device according to any one of claims 1-5, characterized in that, The telescopic assembly (21) includes a first support rod (211), a sleeve (212), and a second support rod (213) connected in sequence; The first support rod (211) is movably sleeved on the outside of the sleeve (212), the sleeve (212) is threadedly connected to the second support rod (213), and the anchor head (22) is set on the second support rod (213).

7. The wind turbine pile foundation leveling device according to claim 6, characterized in that, The inner wall of the first support rod (211) is provided with a groove, and the sleeve (212) is provided with a protrusion at the corresponding position, and the protrusion slides in the groove.

8. The wind turbine pile foundation leveling device according to any one of claims 1-5, characterized in that, The expansion joint (21) is welded to the pile foundation.

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