Wind driven generator tower verticality detection device

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind driven generator tower verticality detection device which comprises a semi-ring support, a rotating assembly, a telescopic assembly and a measuring assembly, the semi-ring support is sleeved on the outer wall of the top of a tower, the rotating assembly is installed on the semi-ring support, and the telescopic assembly is installed on the measuring assembly. The rotating assembly moves in the circumferential direction of a gear ring of the semi-ring support through a first gear, the telescopic assembly is arranged above the rotating assembly and telescopically moves on the rotating assembly through a gear and rack mechanism, and the measuring assembly is connected with the end, extending out of the outer side of the semi-ring support, of the telescopic assembly. The method is not limited by a wind field environment, can rapidly and accurately detect the verticality of the tower drum, and can continuously detect the verticality of the tower drum in the operation process of a wind driven generator.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, specifically relating to a wind turbine tower verticality detection device. Background Technology

[0002] The wind turbine tower is an important supporting structure for wind turbines. The tower is usually a tall column structure. Affected by construction quality and environmental factors such as wind force and ground settlement during use, the tower may tilt and deform. The vertical deviation of the tower will be further increased, and the centrifugal force and noise generated when the wind turbine rotates will be significantly increased, which will affect the operation of the wind turbine.

[0003] To ensure the stable operation of wind turbines, the verticality of the tower is crucial. Currently, the main methods for detecting the verticality of wind turbine towers include the total station prism-free method, theodolite projection method, and three-dimensional laser scanning method. These methods all require setting up multiple observation points at a considerable distance from the tower and installing instruments to observe the tower. The detection process is time-consuming and labor-intensive, and the detection accuracy is affected by factors such as the wind field environment, human factors, and weather. Furthermore, the tower cannot be continuously monitored during the operation of the wind turbine. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a wind turbine tower verticality detection device to solve the problems of the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wind turbine tower verticality detection device is installed on the top of the tower and includes a semi-ring bracket, a rotating component, a telescopic component, and a measuring component. The semi-ring bracket is sleeved on the outer wall of the top of the tower. The rotating component is installed on the semi-ring bracket and moves circumferentially along the toothed ring of the semi-ring bracket via a first gear. The telescopic component is located above the rotating component and moves telescopically on the rotating component via a gear and rack mechanism. The measuring component is connected to the end of the telescopic component that extends outward from the semi-ring bracket.

[0007] A further improvement of this utility model is that the measuring component includes a windshield, an inclination sensor, a plumb bob, and a laser rangefinder. The windshield is fixedly connected to the lower end of the telescopic component extending out of the semi-circular support. The inclination sensor is set on the upper wall of the windshield. The end of the plumb line of the plumb bob is connected to the center of the upper wall of the windshield. The laser rangefinder is fixedly connected to the lower end of the plumb bob.

[0008] A further improvement of this invention is that the laser beam X emitted by the laser rangefinder remains vertically downward and illuminates the ground.

[0009] A further improvement of this utility model is that the toothed ring is fixedly connected to the lower part of the semi-ring bracket, a ring rail is provided above the toothed ring, two parallel rolling grooves are respectively opened on both sides of the ring rail, and a T-shaped platform extends above the ring rail.

[0010] A further improvement of this utility model is that the rotating component includes a revolution platform, which is installed on a ring rail. A T-shaped groove is provided in the middle of the side of the revolution platform near the center of the semi-ring support. The T-shaped groove is inserted into and slidably connected to the T-shaped platform. A movable groove is provided in the lower part of the side of the revolution platform near the center of the semi-ring support. The movable groove is connected to the T-shaped groove and is sleeved on both sides of the ring rail.

[0011] A further improvement of this invention is that two rows of rollers are provided on the two side walls of the movable groove, and the rollers are in rolling connection with the rolling groove.

[0012] A further improvement of this utility model is that the rotating assembly further includes a first gear and a first motor. The first motor is mounted on the rotating platform, and the output shaft of the first motor passes through the rotating platform and is connected to the first gear. The output shaft of the first motor is rotatably connected to the rotating platform, and the first gear meshes with the gear ring.

[0013] A further improvement of this utility model is that the telescopic component includes a second gear, a second motor, a rack and pinion, and a limiting boss. The second motor is installed at the end of the revolution platform away from the semi-ring support. The second gear is connected to the output shaft of the second motor. The rack is positioned above the revolution platform and meshes with the second gear. The limiting boss is positioned above the revolution platform. Slider blocks are symmetrically arranged inside the upper and lower sides of the limiting boss. Sliding grooves are symmetrically opened on the upper and lower surfaces of the rack. The rack passes through the limiting boss, and the sliders are slidably connected to the sliding grooves.

[0014] A further improvement of this utility model is that two semi-ring brackets are provided, and the two semi-ring brackets are connected end to end. One end of the semi-ring bracket is provided with multiple limiting rods extending outward, and the other end of the semi-ring bracket is provided with multiple limiting holes. The limiting rod on one semi-ring bracket corresponds one-to-one with the limiting hole on the other semi-ring bracket. The limiting rod of one semi-ring bracket is inserted into the limiting hole of the other semi-ring bracket, and the two semi-ring brackets form a complete ring.

[0015] A further improvement of this invention is that the two semi-ring brackets are fixedly connected at the connection point by bolts.

[0016] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0017] This utility model provides a wind turbine tower verticality testing device. The device is mounted on the outer wall of the tower top via a semi-ring bracket. This design makes the device compact and facilitates installation and disassembly at the top of the wind turbine tower. A rotating component moves circumferentially along the toothed ring of the semi-ring bracket via a first gear. This design allows the measuring component to perform testing at any position on the tower, greatly improving the flexibility and accuracy of the testing. A telescopic component moves telescopically on the rotating component via a gear and rack mechanism, further enhancing the device's flexibility and allowing the measuring component to reach different heights on the tower for testing. The measuring component is connected to the end of the telescopic component extending beyond the semi-ring bracket. This design ensures that the measuring component can directly contact the outer wall of the tower for accurate verticality measurement. The precise transmission of the gear and rack mechanism and the first gear also ensures stability and accuracy during the measurement process.

[0018] Furthermore, since this invention is installed on the tower, the measuring component can quickly and accurately detect the verticality of the tower by means of the toothed ring on the semi-ring bracket without setting up an observation point far away from the tower. It is not limited by the wind field environment, reduces the constraints of human factors and weather factors, and is not affected by wind field environment.

[0019] Furthermore, this invention can continuously monitor the verticality of the tower during the operation of the wind turbine and obtain tower deformation information in a timely manner, which is beneficial for the long-term maintenance of the tower. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a wind turbine tower verticality detection device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the rotating assembly described in this utility model;

[0023] Figure 3 This is an exploded view of the semi-ring support structure described in this utility model;

[0024] Figure 4 This is a partially enlarged view of one end of the semi-ring support structure described in this utility model.

[0025] Figure 5 This is a partially enlarged view of the other end of the semi-ring support structure described in this utility model.

[0026] Figure 6 This is a cross-sectional view of the rotating assembly described in this utility model;

[0027] Figure 7 This is a schematic diagram of the revolution platform described in this utility model;

[0028] Figure 8 This is a schematic diagram of the telescopic component described in this utility model;

[0029] Figure 9 This is a cross-sectional view of the telescopic component described in this utility model;

[0030] Figure 10 This is a cross-sectional view of the measuring component described in this utility model;

[0031] Figure 11 This is a schematic diagram of the internal structure of the tilt sensor described in this utility model;

[0032] Figure 12 This is a schematic diagram illustrating the principle of the tower verticality detection device in this utility model for calculating the tower verticality.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Tower; 11. Ground; 12. Measuring surface; 2. Semi-ring support; 21. Limiting rod; 22. Limiting hole; 23. Gear ring; 231. Limiting block; 232. Limiting groove; 24. Ring rail; 241. Rolling groove; 242. T-shaped platform; 3. Rotating assembly; 31. First gear; 32. First motor; 33. Revolutionary platform; 331. T-shaped groove; 332. Moving groove; 4. Telescopic assembly; 41. Second gear; 42. Second motor; 43. Spur rack; 431. Slide groove; 44. Limiting boss; 441. Slider; 5. Measuring assembly; 51. Windshield; 52. Tilt sensor; 521. Housing; 522. Center electrode; 523. First electrode; 524. Second electrode; 525. Electrolyte; 53. Plumb bob; 54. Laser rangefinder. Detailed Implementation

[0035] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0042] The accompanying drawings show various structural schematic diagrams according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged and may have been omitted for clarity. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0043] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0044] Example 1

[0045] See Figures 1-12 This utility model provides a wind turbine tower verticality detection device. The device is installed on the tower 1 and includes a semi-ring bracket 2, a rotating component 3, a telescopic component 4, and a measuring component 5. The semi-ring bracket 2 is sleeved on the outer wall of the top of the tower 1. The rotating component 3 is installed on the semi-ring bracket 2 and moves circumferentially along the toothed ring 23 of the semi-ring bracket 2 via a first gear 31. The telescopic component 4 is located above the rotating component 3 and moves telescopically on the rotating component 3 via a gear and rack mechanism. The measuring component 5 is connected to one end of the telescopic component 4 that extends outward from the semi-ring bracket 2.

[0046] Furthermore, two semi-ring brackets 2 are provided, connected end to end. One end of each semi-ring bracket 2 has multiple outwardly extending limiting rods 21, and the other end has multiple limiting holes 22. The limiting rods 21 on one semi-ring bracket 2 correspond one-to-one with the limiting holes 22 on the other semi-ring bracket 2. The limiting rods 21 of one semi-ring bracket 2 are inserted into the limiting holes 22 of the other semi-ring bracket 2. The two semi-ring brackets 2 form a complete ring. The two semi-ring brackets 2 are fixedly connected at the connection point by bolts. The toothed ring 23 is fixedly connected to the semi-ring bracket. At the lower part of the ring bracket 2, one end of the toothed ring 23 is provided with an outwardly extending limiting block 231, and the other end of the toothed ring 23 is provided with a limiting groove 232. The limiting block 231 on one toothed ring 23 corresponds to the limiting groove 232 on the other toothed ring 23. The limiting block 231 of one toothed ring 23 is inserted into the limiting groove 232 of the other toothed ring 23. The two toothed rings 23 are fixedly connected at the connection point by bolts. A ring rail 24 is provided above the toothed ring 23. Two parallel rolling grooves 241 are respectively provided on both sides of the ring rail 24. A T-shaped platform 242 extends above the ring rail 24.

[0047] Furthermore, the rotating assembly 3 includes a first gear 31, a first motor 32, and a revolution platform 33. The revolution platform 33 is mounted on the ring rail 24. A T-shaped groove 331 is formed in the middle of the side of the revolution platform 33 near the center of the semi-ring support 2. The T-shaped groove 331 is inserted into and slidably connected to the T-shaped platform 242. A movable groove 332 is formed in the lower part of the side of the revolution platform 33 near the center of the semi-ring support 2. The movable groove 332 communicates with the T-shaped groove 331. The movable groove 332 is fitted on both the inner and outer sides of the ring rail 24. There are two movable grooves 332. Two rows of rollers 333 are provided on the side wall. The rollers 333 are tactilely connected to the rolling groove 241. The first motor 32 is mounted on the rotary table 33. The output shaft of the first motor 32 passes through the rotary table 33 and is connected to the first gear 31. The output shaft of the first motor 32 is rotatably connected to the rotary table 33. The first gear 31 meshes with the gear ring 23. When the first motor 32 is started, the rotary table 33 moves circumferentially along the semi-ring support 2 through the meshing action of the first gear 31 and the gear ring 23, so that measurements can be taken at different circumferential positions of the tower 1.

[0048] Furthermore, the telescopic assembly 4 includes a second gear 41, a second motor 42, a rack 43, and a limiting boss 44. The second motor 42 is installed on the side of the revolution platform 33 away from the semi-ring bracket 2. The second gear 41 is connected to the output shaft of the second motor 42. The rack 43 is positioned above the revolution platform 33 and meshes with the second gear 41. The limiting boss 44 is positioned above the revolution platform 33. Slider blocks 441 are symmetrically arranged inside the upper and lower sides of the limiting boss 44. Sliding grooves 431 are symmetrically opened on the upper and lower surfaces of the rack 43. The rack 43 passes through the limiting boss 44. The sliders 441 are slidably connected to the sliding grooves 431. When the second motor 42 is started, the rack 43 moves telescopically above the revolution platform 33 through the transmission with the second gear 41.

[0049] Furthermore, the measuring component 5 includes a windshield 51, an inclination sensor 52, a plumb bob 53, and a laser rangefinder 54. The windshield 51 is fixedly connected to the lower end of the rack 43 extending outward from the semi-ring bracket 2. The inclination sensor 52 is located on the upper wall of the windshield 51. The end of the plumb line of the plumb bob 53 is connected to the center of the upper wall of the windshield 51. The plumb bob 53 is always vertically downward under the action of gravity. The windshield 51 can prevent the plumb bob 53 from being disturbed by the wind. The support frame 512 can prevent the plumb bob 53 from swaying significantly. The laser rangefinder 54 is fixedly connected to the lower end of the plumb bob 53. The laser emitted by the laser rangefinder 54, together with the plumb bob 53, remains vertically downward and illuminates the ground 11.

[0050] Furthermore, the tilt sensor 52 includes a housing 521, a central electrode 522, a first electrode 523, and a second electrode 524. The central electrode 522 is located in the middle of the housing 521, and the first electrode 523 and the second electrode 524 are symmetrically arranged on both sides of the central electrode 522. The housing 521 is filled with an electrolyte 525. When the housing 521 is tilted at a certain angle to the horizontal plane, the electrical signal between the first electrode 523, the central electrode 522, and the second electrode 524 immersed in the electrolyte 525 changes, thereby obtaining the tilt angle of the housing 521 relative to the horizontal plane. The specific liquid pendulum tilt sensor is prior art and will not be described in detail.

[0051] Example 2

[0052] This utility model provides a wind turbine tower verticality detection device. In use, a semi-ring bracket 2 is installed on the outer wall of the top of the tower 1. The installation plane of the semi-ring bracket 2 is defined as the measuring surface 12. The second motor 42 is started, and the rack 43 extends away from the center of the tower 1 until the distance from the laser rangefinder 54 to the central axis of the tower 1 is greater than the bottom radius of the tower 1, so as to prevent the laser beam X emitted by the laser rangefinder 54 from being blocked by the lower part of the tower 1. This position is the first measurement position. The height Hn of this position relative to the ground 11 is measured. Simultaneously, the angle between the measuring surface 12 and the horizontal plane at this position is measured by the tilt sensor 52. The first motor 32 is started, and the rotating component 3 moves circumferentially along the semi-ring bracket 2, thereby causing the measuring component 5 to measure the nth circumferential position on the measuring surface 12, obtaining the height Hn of the nth circumferential position relative to the ground 11 and the angle between the measuring surface 12 of the nth circumferential position and the horizontal plane. Where n = 1, 2, 3, ..., N, N ≥ 4, for Taking the average value will give the angle between the measuring surface 12 and the horizontal plane. ,Right now By averaging Hn, we can obtain the height Ht of the center Pt of the measuring surface 12 from the ground 11, that is... Define the vertical line extending from the center of ground 11 and perpendicular to ground 11 as the absolute vertical line L. Given the diameter Dt of the measuring surface 12, the height difference between the highest and lowest points on the measuring surface 12 can be calculated, which is the verticality. , Given the distance between the center Pt of the measuring surface 12 and the center Pb of the ground 11, which is also the height H of the tower 1, the angle between the line connecting Pt and Pb and the absolute vertical line 13, i.e., the inclination, can be calculated. , The detection device does not require setting up observation points far from the tower 1, is not limited by the wind field environment, and can quickly and accurately detect the verticality of the tower 1. At the same time, it can continuously detect the verticality of the tower 1 during the operation of the wind turbine, and can obtain the deformation information of the tower 1 in a timely manner, which is beneficial to the long-term maintenance of the tower 1.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications made to the technical solutions based on the technical concept proposed by this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A device for detecting the verticality of a wind turbine tower, characterized in that, The device is installed on the top of the tower (1) and includes a semi-ring bracket (2), a rotating component (3), a telescopic component (4) and a measuring component (5). The semi-ring bracket (2) is fitted on the outer wall of the top of the tower (1). The rotating component (3) is installed on the semi-ring bracket (2). The rotating component (3) moves circumferentially along the toothed ring (23) of the semi-ring bracket (2) through a first gear (31). The telescopic component (4) is located above the rotating component (3). The telescopic component (4) moves telescopically on the rotating component (3) through a gear and rack mechanism. The measuring component (5) is connected to one end of the telescopic component (4) that extends out of the outer side of the semi-ring bracket (2).

2. The wind turbine tower verticality detection device according to claim 1, characterized in that, The measuring component (5) includes a windshield (51), an inclination sensor (52), a plumb bob (53), and a laser rangefinder (54). The windshield (51) is fixedly connected to the lower end of the telescopic component (4) extending out of the semi-circular bracket (2). The inclination sensor (52) is set on the upper wall of the windshield (51). The end of the plumb line of the plumb bob (53) is connected to the center of the upper wall of the windshield (51). The laser rangefinder (54) is fixedly connected to the lower end of the plumb bob (53).

3. The wind turbine tower verticality detection device according to claim 2, characterized in that, The laser beam X emitted by the laser rangefinder (54) remains vertically downward and illuminates the ground (11).

4. The wind turbine tower verticality detection device according to claim 1, characterized in that, The toothed ring (23) is fixedly connected to the lower part of the semi-ring bracket (2). A ring rail (24) is provided above the toothed ring (23). Two parallel rolling grooves (241) are opened on both sides of the ring rail (24). A T-shaped platform (242) extends above the ring rail (24).

5. The wind turbine tower verticality detection device according to claim 4, characterized in that, The rotating assembly (3) includes a rotating platform (33), which is installed on the ring rail (24). A T-shaped groove (331) is provided in the middle of the side of the rotating platform (33) near the center of the semi-ring support (2). The T-shaped groove (331) is inserted into and slidably connected to the T-shaped platform (242). A movable groove (332) is provided in the lower part of the side of the rotating platform (33) near the center of the semi-ring support (2). The movable groove (332) is connected to the T-shaped groove (331). The movable groove (332) is sleeved on both sides of the ring rail (24).

6. The wind turbine tower verticality detection device according to claim 5, characterized in that, The two side walls of the moving groove (332) are provided with two rows of rollers (333), and the rollers (333) are tumblingly connected to the rolling groove (241).

7. The wind turbine tower verticality detection device according to claim 5, characterized in that, The rotating assembly (3) also includes a first gear (31) and a first motor (32). The first motor (32) is mounted on a rotating platform (33). The output shaft of the first motor (32) passes through the rotating platform (33) and is connected to the first gear (31). The output shaft of the first motor (32) is rotatably connected to the rotating platform (33). The first gear (31) meshes with the gear ring (23).

8. The wind turbine tower verticality detection device according to claim 5, characterized in that, The telescopic assembly (4) includes a second gear (41), a second motor (42), a rack (43), and a limiting boss (44). The second motor (42) is installed at one end of the revolution platform (33) away from the semi-ring bracket (2). The second gear (41) is connected to the output shaft of the second motor (42). The rack (43) is set above the revolution platform (33) and meshes with the second gear (41). The limiting boss (44) is set above the revolution platform (33). Slider blocks (441) are symmetrically arranged inside the upper and lower sides of the limiting boss (44). Sliding grooves (431) are symmetrically opened on the upper and lower surfaces of the rack (43). The rack (43) passes through the limiting boss (44), and the slider (441) is slidably connected to the sliding groove (431).

9. A wind turbine tower verticality detection device according to claim 4, characterized in that, Two semi-ring brackets (2) are provided, and the two semi-ring brackets (2) are connected end to end. One end of the semi-ring bracket (2) is provided with multiple limiting rods (21) extending outward, and the other end of the semi-ring bracket (2) is provided with multiple limiting holes (22). The limiting rod (21) on one semi-ring bracket (2) corresponds one-to-one with the limiting hole (22) on the other semi-ring bracket (2). The limiting rod (21) of one semi-ring bracket (2) is inserted into the limiting hole (22) of the other semi-ring bracket (2), and the two semi-ring brackets (2) form a complete ring.

10. A wind turbine tower verticality detection device according to claim 9, characterized in that, The two semi-ring brackets (2) are fixedly connected at the joint by bolts.

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