Flange connecting structure of wind power generation tower drum

Abstract

The utility model discloses a wind power generation tower drum flange connecting structure which comprises a lower flange and an upper flange, the upper flange is arranged at the top end of the lower flange, supporting plates are fixed to the inner wall of the lower flange and the inner wall of the upper flange respectively, fixing pieces are arranged in the supporting plates, groove blocks are arranged at the top ends of the fixing pieces, and the groove blocks are arranged in the groove blocks. And a connecting rod is fixed to the outer wall of the groove block, a sleeve is fixed to the outer wall of the supporting plate at the top end, and an inserting rod is inserted into the sleeve. By arranging a fixing piece matched with a bolt and a nut between the supporting plates, preliminary connection of the lower flange and the upper flange is achieved, meanwhile, through the synergistic effect of a groove block, an inserting rod, a connecting groove rod and other assemblies, the nut can be further tightly sleeved with the groove block, a groove matched with the nut in shape is formed in the groove block, the nut can be effectively limited, and the service life of the nut is prolonged. The risk that the nut is loosened due to the fact that the nut is subjected to external force such as wind for a long time is greatly reduced, and the stability of the flange connecting portion of the tower drum is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of wind power tower technology, specifically a flange connection structure for wind power towers. Background Technology

[0002] In the field of wind power generation, the tower is a key structure supporting the wind turbine, and its safety and stability are of paramount importance. The tower is usually composed of multiple sections connected by flanges. The flange connection of the existing wind power towers generally adopts the method of direct fixing with bolts and nuts. During long-term operation, under the influence of repeated wind force and equipment vibration, the nuts are difficult to be effectively restrained and are prone to loosening. Once the nuts loosen, it will not only reduce the stability of the tower connection, but may even cause major safety accidents such as tower tilting and collapse in severe cases.

[0003] To ensure the safe operation of wind power equipment, staff need to regularly check and maintain the nuts for looseness. However, since wind farms are usually widely distributed, with a large number of towers, and the towers are often located in remote areas with inconvenient transportation, frequent maintenance work not only consumes a lot of manpower, material resources and time, but also affects the normal power generation efficiency of wind power equipment and increases power generation costs. Utility Model Content

[0004] The purpose of this utility model is to provide a flange connection structure for wind power generation towers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flange connection structure for a wind power generation tower, comprising a lower flange and an upper flange, wherein the upper flange is provided at the top of the lower flange, and a support plate is fixed to the inner wall of both the lower flange and the upper flange. A fixing member is provided inside the support plate, and a groove block is provided at the top of the fixing member. A connecting rod is fixed to the outer wall of the groove block, and a sleeve is fixed to the outer wall of the support plate at the top. An insert rod is inserted into the sleeve, and the top of the insert rod is connected to the connecting rod. A driving member is provided at the bottom of the insert rod.

[0006] Preferably, the support plate has a through hole inside, and a limiting groove is formed on the outer wall of the support plate at the bottom.

[0007] Preferably, the fastener includes a bolt that passes through the bottom end of the support plate and extends to the top of the support plate. A limit block is fixed to the outer wall of the bolt and is inserted into the inside of a limit groove. A nut is threaded onto the top end of the bolt.

[0008] Preferably, the interior of the groove block forms a groove that matches the shape of the nut, and a circular through hole is provided at the center of the groove.

[0009] Preferably, the driving component includes a connecting groove rod, which is threaded to the bottom outer wall of the insertion rod. A rhomboid block is fixed to the outer wall of the connecting groove rod, and a support rod is rotatably connected to the bottom end of the connecting groove rod. The outer wall of the support rod is connected to the bottom support plate.

[0010] Preferably, the connecting groove rod has a through hole inside, and the inner wall of the through hole is threaded to engage with the thread on the outer wall of the insert rod.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By setting fasteners with bolts and nuts between the support plates, the lower flange and the upper flange are initially connected. At the same time, the synergistic effect of the slotted block, the insert rod, the connecting slot rod and other components can further tighten the slotted block onto the outside of the nut. The groove inside the slotted block that matches the shape of the nut can effectively limit the nut, greatly reducing the risk of the nut loosening due to long-term exposure to wind and other external forces. This significantly improves the stability of the tower flange connection and ensures the safety of wind power equipment operation.

[0013] The limiting block in the fastener cooperates with the limiting groove opened on the outer wall of the support plate to prevent the bolt from rotating during installation, simplifying the tightening operation of the bolt and nut. The diamond block design on the outer wall of the connecting groove rod makes it easy for users to rotate it with tools, thereby easily realizing the up and down movement of the insertion rod and completing the fixing of the groove block to the nut.

[0014] The sleeve limits the insertion rod, ensuring the stability of the slot block during movement and preventing it from shifting. The connecting slot rod and the insertion rod are connected by threads to enable the insertion rod to move up and down. The support rod provides support for the connecting slot rod. All components cooperate and work together to ensure the reliability of the connection structure, optimize the overall structural layout, and extend the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A detailed view of the connection structure from the front;

[0017] Figure 3 for Figure 2 Top view of the connection structure between the middle groove block and the connecting rod;

[0018] Figure 4 for Figure 2 Detailed top view of the connection structure between the connecting slot block and the rhombus block;

[0019] Figure 5 for Figure 2 A top-down view of the connection structure details.

[0020] In the diagram: 1. Lower flange, 2. Upper flange, 3. Support plate, 4. Bolt, 5. Limiting block, 6. Nut, 7. Groove block, 8. Connecting rod, 9. Sleeve, 10. Insert rod, 11. Connecting groove rod, 12. Diamond block, 13. Support rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution for a flange connection structure of a wind power generation tower: a flange connection structure for a wind power generation tower includes a lower flange 1 and an upper flange 2. The upper flange 2 is provided at the top of the lower flange 1. Support plates 3 are fixed to the inner walls of both the lower flange 1 and the upper flange 2. The support plates 3 can connect the lower flange 1 and the upper flange 2 through fasteners. Fasteners are provided inside the support plates 3. The top of the fasteners is provided with a groove block 7. The groove block 7 is used to fix the nut 6 to prevent loosening over time. A connecting rod 8 is fixed to the outer wall of block 7. The connecting rod 8 is used to connect the slot block 7 and the insertion rod 10. A sleeve 9 is fixed to the outer wall of the top support plate 3. The sleeve 9 is used to limit the insertion rod 10. The insertion rod 10 is inserted into the sleeve 9. The bottom end of the insertion rod 10 cooperates with the connecting slot rod 11 to pull the insertion rod 10 downward. The top end of the insertion rod 10 is connected to the connecting rod 8. A driving component is provided at the bottom end of the insertion rod 10. A through hole is opened inside the support plate 3. A limiting groove is opened on the outer wall of the bottom support plate 3.

[0023] The fastener includes a bolt 4, which passes through the bottom end of the support plate 3 and extends to the top of the support plate 3. After passing through the support plate 3, the bolt 4 can be fixed inside the support plate 3 by a nut 6. A limit block 5 is fixed to the outer wall of the bolt 4. The limit block 5 is used to limit the bolt 4 to prevent it from rotating. The limit block 5 is inserted into the inside of the limit groove. The top end of the bolt 4 is threaded with a nut 6. The inside of the groove block 7 forms a groove that matches the shape of the nut, and a circular through hole is opened at the center of the groove.

[0024] The driving component includes a connecting groove rod 11, which is threaded to the bottom outer wall of the insertion rod 10. When the connecting groove rod 11 rotates, it can pull the insertion rod 10 downward. A rhombus block 12 is fixed to the outer wall of the connecting groove rod 11. The rhombus block 12 allows the user to rotate the connecting groove rod 11 using tools. A support rod 13 is rotatably connected to the bottom end of the connecting groove rod 11. The support rod 13 is used to provide support for the connecting groove rod 11, and the outer wall of the support rod 13 is connected to the bottom support plate 3. A through hole is opened inside the connecting groove rod 11, and the inner wall of the through hole is threaded to engage with the thread on the outer wall of the insertion rod 10.

[0025] Working principle: When a wind power tower flange connection structure is first used, after the upper flange 2 is placed on top of the lower flange 1, the bolt 4 is inserted from the bottom support plate 3 and extends to the top support plate 3. Then, the user rotates the nut on the outer wall of the bolt 4 and tightens it. After tightening, the groove block 7 is moved downward. When moving, the insert rod 10 moves downward inside the sleeve 9 to limit the groove block 7. When the groove block 7 is fitted onto the outer wall of the nut 6, the bottom end of the insert rod 10 is in contact with the top end of the connecting groove rod 11. After aligning them, the connecting groove rod 11 is rotated. When the connecting groove rod 11 rotates, the thread on its inner wall engages with the thread on the outer wall of the insert rod 10, pulling the insert rod 10 downward. When pulled, the groove block 7 moves downward and is completely fitted onto the outer wall of the nut 6. When the connecting groove rod 11 is rotated, the user can use a tool to rotate the diamond block 12 to drive the connecting groove rod 11 to rotate. After the groove inside the groove block 7 limits the nut 6, it can effectively prevent the nut 6 from loosening.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flange connection structure for a wind power generation tower, comprising a lower flange (1) and an upper flange (2), wherein the upper flange (2) is provided at the top of the lower flange (1), characterized in that, The inner walls of the lower flange (1) and the upper flange (2) are both fixed with support plates (3). The support plates (3) are provided with fasteners. The top of the fasteners is provided with a groove block (7). The outer wall of the groove block (7) is fixed with a connecting rod (8). The outer wall of the support plates (3) is fixed with a sleeve (9). The sleeve (9) is inserted with a plug rod (10). The top of the plug rod (10) is connected to the connecting rod (8). The bottom of the plug rod (10) is provided with a driving component.

2. The wind power generation tower flange connection structure according to claim 1, characterized in that, The support plate (3) has a through hole inside, and a limiting groove is provided on the outer wall of the support plate (3) at the bottom.

3. The wind power generation tower flange connection structure according to claim 1, characterized in that, The fastener includes a bolt (4), which passes through the bottom end of the support plate (3) and extends to the top of the support plate (3). A limit block (5) is fixed to the outer wall of the bolt (4), and the limit block (5) is inserted into the inside of the limit groove. A nut (6) is threaded to the top of the bolt (4).

4. The wind power generation tower flange connection structure according to claim 1, characterized in that, The groove (7) has a groove inside that matches the shape of the nut, and a circular through hole is provided at the center of the groove.

5. The wind power generation tower flange connection structure according to claim 1, characterized in that, The driving component includes a connecting groove rod (11), which is threaded to the bottom outer wall of the insert rod (10). A rhombus block (12) is fixed to the outer wall of the connecting groove rod (11). A support rod (13) is rotatably connected to the bottom end of the connecting groove rod (11), and the outer wall of the support rod (13) is connected to the bottom support plate (3).

6. The wind power generation tower flange connection structure according to claim 5, characterized in that, The connecting groove rod (11) has a through hole inside, and the inner wall of the through hole is threaded to engage with the thread on the outer wall of the insert rod (10).

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