Flange deformation correction tool in tower drum installation process

Abstract

The utility model discloses a flange deformation correction tool in a tower drum installation process in the technical field of offshore construction engineering, which comprises an upper section tower drum flange and a lower section tower drum flange, and a plurality of bolt holes are formed in the top of the upper section tower drum flange and the top of the lower section tower drum flange at equal intervals. Fastening bolts are arranged in the bolt holes corresponding to the tops of the upper section tower drum flange and the lower section tower drum flange, correction guide parts are arranged on the sides, away from the fastening bolts, of the upper section tower drum flange and the lower section tower drum flange, and hydraulic jacks are installed on the sides, away from the fastening bolts, of the correction guide parts. According to the tool, the correction guide component, the hydraulic jack and the fastening bolts are arranged in a matched mode, the hydraulic jack provides thrust in the horizontal direction for the lower section tower drum flange, the upper section tower drum flange and the lower section tower drum flange are made to be aligned with bolt holes under the mutual horizontal force, and the tool is simple and reliable in overall structure and high in efficiency. And installation workers can operate conveniently in the high-altitude tower drum operation process.

Description

Technical Field

[0001] This utility model relates to the technical field of offshore construction engineering, and in particular to a flange deformation correction tool for tower installation process. Background Technology

[0002] In offshore construction engineering, wind turbine towers typically consist of 3-5 steel sections connected by flanges. As wind turbines become increasingly larger, the diameter and weight of the towers also increase, bringing new challenges. These primarily manifest in the following ways: during transportation, the towers are usually placed horizontally on transport jigs. Under their own weight, the flange cross-sections may experience ellipticity deviations, leading to misalignment between the upper and lower tower sections. This makes it difficult to insert the connecting bolts into the corresponding flange holes during tower installation.

[0003] Whenever flange deformation prevents the smooth installation of the tower, a significant amount of time and effort is required to correct the deformed flange. Traditional flange deformation correction methods rely solely on hammering with locating pins or pulling with a hand hoist, which is difficult to operate and prone to bumping and scratching the tower steel, flange hole threads, and flange anti-corrosion coating during the correction process. Based on this, we propose a flange deformation correction tooling for the tower installation process. Utility Model Content

[0004] To improve upon the aforementioned traditional flange deformation correction methods, which rely solely on locating pins for hammering or hand-operated hoists for traction, resulting in significant operational difficulties and the risk of damage to the tower steel, flange threads, and flange anti-corrosion coating during the correction process, this utility model provides a flange deformation correction tooling for the tower installation process.

[0005] This utility model provides a flange deformation correction tooling for tower installation, which adopts the following technical solution:

[0006] A flange deformation correction tooling for tower installation includes an upper tower flange and a lower tower flange. The tops of both the upper and lower tower flanges have several bolt holes spaced at equal intervals. Fastening bolts are installed inside the corresponding bolt holes on the tops of both the upper and lower tower flanges. A correction guide component is provided on the side of the upper and lower tower flanges away from the fastening bolts, and a hydraulic jack is installed on the side of the correction guide component away from the fastening bolts.

[0007] By adopting the above technical solution, the bolt holes on the top of the upper and lower tower flanges can be easily passed through on one side. The hydraulic jack is installed and supported by the alignment guide component. Then, the handle of the hydraulic jack is slowly turned, and the hydraulic jack provides a horizontal thrust to the lower tower flange. After the alignment guide component is subjected to the horizontal thrust, it generates a horizontal tension on the upper tower flange, so that the upper and lower tower flanges are aligned with the bolt holes under the mutual horizontal forces. After the bolt holes of the upper and lower tower flanges can be easily passed through by the fastening bolt, the fastening bolt is then inserted to fix the upper and lower tower flanges. The overall structure of this tooling is simple and reliable, and it is convenient for installation workers to operate during high-altitude tower operations.

[0008] Optionally, the correction guide component includes a guide post, which is inserted into the bolt hole at the top of the upper tower flange. An L-shaped body is connected to the side of the guide post near the center of the upper tower flange. A base is fixed on the side wall of the L-shaped body near the guide post, and the end of the base near the guide post is fixedly connected to the side of the hydraulic jack away from the lower tower flange.

[0009] By adopting the above technical solution, the guide column is set inside the bolt hole at the top of the upper tower flange. The guide column and the base are connected by the L-shaped body, so that the base can be used as a support point for the hydraulic jack to apply thrust.

[0010] Optionally, a corner reinforcing rib is installed at the corner of the L-shaped body near the base.

[0011] By adopting the above technical solutions, the strength and rigidity of the L-shaped main body can be enhanced, the load-bearing capacity of the L-shaped main body can be effectively improved, and deformation of the L-shaped main body can be prevented.

[0012] Optionally, a rubber pad is fixedly connected to the end of the hydraulic jack away from the base.

[0013] By adopting the above technical solution, when the hydraulic jack provides horizontal thrust on the lower tower flange, the rubber gasket is in direct contact with the lower tower flange, thereby protecting the surface of the lower tower flange and preventing damage to the inner wall of the lower tower flange.

[0014] Optionally, the diameter of the guide post is equal to the inner diameter of the bolt hole at the top of the upper tower flange.

[0015] By adopting the above technical solution, it can be ensured that the guide post is inserted into the bolt hole.

[0016] Optionally, the surface of the fastening bolt is coated with a zinc plating layer.

[0017] By adopting the above technical solution, an oxide film is formed on the surface of the fastening bolt, which effectively prevents the fastening bolt from rusting and thus extends the service life of the fastening bolt.

[0018] In summary, this utility model has at least one of the following beneficial effects:

[0019] By coordinating the guide components, hydraulic jacks, and fastening bolts, the hydraulic jacks provide horizontal thrust to the lower tower flange, aligning the bolt holes of the upper and lower tower flanges under mutual horizontal forces. The overall structure of this tooling is simple and reliable, making it easy for installation workers to operate during high-altitude tower work. It solves the problems of existing correction methods being difficult to operate and prone to bumping and scratching the tower flanges during the correction process. Attached Figure Description

[0020] 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 these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 3 This is a partial structural schematic diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the correction and guidance component of this utility model.

[0025] In the diagram: 10. Upper tower flange; 20. Lower tower flange; 30. Correction guide component; 31. Guide column; 32. L-shaped main body; 33. Corner reinforcing rib; 34. Base; 40. Hydraulic jack; 50. Rubber gasket; 60. Fastening bolt. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0027] Please refer to the attached diagram in the instruction manual. Figure 1 and Figure 2This utility model provides an embodiment of a flange deformation correction fixture for tower installation, comprising an upper tower flange 10 and a lower tower flange 20. Both the upper and lower tower flanges 10 and 20 have a plurality of bolt holes spaced evenly at their tops. Each bolt hole on the top of the upper and lower tower flanges 10 and 20 is fitted with a fastening bolt 60. The surface of the fastening bolt 60 is coated with a galvanized layer. This forms an oxide film on the surface of the fastening bolt 60, effectively preventing corrosion and extending its service life.

[0028] Please refer to the attached diagram in the instruction manual. Figure 2 , Figure 3 and Figure 4 A correction guide component 30 is provided on the side of the upper tower flange 10 and the lower tower flange 20 away from the fastening bolts 60. A hydraulic jack 40 is installed on the side of the correction guide component 30 away from the fastening bolts 60. The correction guide component 30 includes a guide post 31, which is inserted into the bolt hole at the top of the upper tower flange 10. An L-shaped body 32 is fixedly connected to the side of the guide post 31 near the center of the upper tower flange 10. A base 34 is fixed to the side wall of the L-shaped body 32 near the guide post 31, and the end of the base 34 near the guide post 31 is fixedly connected to the side of the hydraulic jack 40 away from the lower tower flange 20. The guide post 31 is fixed inside the bolt hole at the top of the upper tower flange 10. The guide post 31 and the base 34 are connected by the L-shaped body 32, so that the base 34 can serve as a support point for the hydraulic jack 40 to apply thrust.

[0029] Please refer to the attached diagram in the instruction manual. Figure 3 and Figure 4 A corner reinforcing rib 33 is fixedly installed at the corner of the L-shaped main body 32 near the base 34. This strengthens the L-shaped main body 32, enhances its strength and rigidity, effectively improves its load-bearing capacity, and prevents deformation. The diameter of the guide post 31 is equal to the inner diameter of the bolt hole at the top of the upper tower flange 10. This ensures that the guide post 31 is inserted into the bolt hole.

[0030] Please refer to the attached diagram in the instruction manual. Figure 2 and Figure 3 A rubber gasket 50 is fixedly connected to one end of the hydraulic jack 40 away from the base 34. When the hydraulic jack 40 provides horizontal thrust on the lower tower flange 20, the rubber gasket 50 is in direct contact with the lower tower flange 20, thereby protecting the surface of the lower tower flange 20 and preventing damage to the inner wall of the lower tower flange 20.

[0031] Working principle: In use, first, ensure that the bolts 60 can pass smoothly through the bolt holes at the top of the upper tower flange 10 and the lower tower flange 20. Next, insert the guide post 31 into the bolt hole of the upper tower flange 10 that needs to be restored. Then, slowly crank the handle of the hydraulic jack 40. The hydraulic jack 40 provides a horizontal thrust to the lower tower flange 20. At this time, the rubber gasket 50 is in direct contact with the lower tower flange 20, thus enabling the lower tower flange 20's inner wall to be repositioned. To protect the lower tower flange 20 from damage, the base 34, under horizontal thrust, drives the guide column 31 to fix the upper tower flange 10, generating horizontal tension through the L-shaped body 32. This aligns the bolt holes of the upper tower flange 10 and the lower tower flange 20 under mutual horizontal forces. Once the bolt holes of the upper tower flange 10 and the lower tower flange 20 can pass smoothly through the fastening bolts 60, the fastening bolts 60 are then inserted to fix the upper tower flange 10 and the lower tower flange 20.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A tower section installation process flange deformation correction tooling comprising an upper tower section flange (10) and a lower tower section flange (20), characterized by: The upper section tower drum flange (10) and the lower section tower drum flange (20) are provided with a plurality of bolt holes at the top in equal intervals, the upper section tower drum flange (10) and the lower section tower drum flange (20) are provided with fastening bolts (60) in the corresponding bolt holes at the top, the upper section tower drum flange (10) and the lower section tower drum flange (20) are provided with correction guiding components (30) on the side away from the fastening bolts (60), and the correction guiding components (30) are provided with hydraulic jacks (40) on the side away from the fastening bolts (60).

2. A tower section installation process flange deformation correction tooling according to claim 1, characterized in that: The correction guiding component (30) comprises a guiding column (31), the guiding column (31) is inserted into the bolt hole at the top of the upper section tower drum flange (10), the guiding column (31) is connected with an L-shaped main body (32) on the side close to the center of the upper section tower drum flange (10), the L-shaped main body (32) is fixed with a base (34) on the side wall on the side close to the guiding column (31), and the base (34) is fixedly connected with the side of the hydraulic jack (40) away from the lower section tower drum flange (20) on the end close to the guiding column (31).

3. A tower section installation process flange deformation correction tooling according to claim 2, characterized in that: The L-shaped main body (32) is provided with a bent corner reinforcing rib (33) at the corner on the side close to the base (34).

4. A tower section installation process flange deformation correction tooling according to claim 2, characterized in that: The hydraulic jack (40) is fixedly connected with a rubber gasket (50) on the end away from the base (34).

5. A tower section installation process flange deformation correction tooling according to claim 2, characterized in that: The diameter of the guiding column (31) is equal to the inner diameter of the bolt hole.

6. A tower section installation process flange deformation correction tooling according to claim 1, characterized in that: The surface of the fastening bolt (60) is coated with a galvanized layer.

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