A tool for secondary grouting formwork of wind turbine foundation pier

Abstract

This utility model discloses a secondary grouting formwork tool for wind turbine foundation piers, relating to the field of wind power foundation construction technology. It includes an arc-shaped template unit, a height-adjustable support, and a ring clamp. The outer plate of the arc-shaped template unit has grooves at both ends of its inner wall, and an adjusting rod is slidably installed on the inner wall of each groove. A primary inner plate is slidably installed on the side of the adjusting rod, and a secondary inner plate and a tertiary inner plate are provided on the side wall of the primary inner plate. Grooves are provided on the inner walls of the outer plate, primary inner plate, secondary inner plate, and tertiary inner plate. In this utility model, the nested structure of the outer plate of the arc-shaped template unit with the primary, secondary, and tertiary inner plates, combined with the screw drive adjustment of the adjusting rod, allows for flexible adaptation to wind turbine foundation piers of different diameters. This eliminates the need for custom-made templates for specific specifications, reducing initial equipment procurement investment and simplifying inventory management.

Description

Technical Field

[0001] This utility model relates to the field of wind power foundation construction technology, specifically a secondary grouting formwork tool for wind turbine foundation piers. Background Technology

[0002] In the construction process of wind power projects, the secondary grouting of the wind turbine foundation is regarded as a crucial process to ensure the stability of wind turbine installation. The construction quality of this process is not only directly related to the safety of the wind turbine in long-term operation, but also the cornerstone of the stable output of the entire wind power generation system.

[0003] However, traditional formwork tools mostly use rigid templates of fixed size. These templates must be customized according to the different diameters of wind turbine foundation piers to match specific construction needs. This customization model not only significantly increases the procurement cost of equipment, putting construction units under considerable economic pressure in the initial investment, but also makes inventory management extremely complicated because each specification of template can only be applied to a specific foundation pier. Furthermore, it cannot flexibly adapt to construction scenarios with multiple specifications. Once a wind turbine foundation pier of a different size is encountered, the template must be redesigned and remade, which not only wastes a lot of time and resources, but may also delay the project progress and affect the overall construction efficiency.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this utility model is to provide a secondary grouting formwork tool for wind turbine foundation piers to solve the problems mentioned in the background art.

[0006] To solve the above technical problems, this utility model provides a secondary grouting formwork tool for wind turbine foundation piers, including an arc-shaped template unit, a height adjustment support and an annular clamp. The upper and lower ends of the inner wall of the outer plate of the arc-shaped template unit are provided with sliding grooves, and an adjustment rod is slidably installed on the inner wall of each of the two sliding grooves.

[0007] A primary inner plate is slidably installed on the side end of the adjusting rod. A secondary inner plate is provided on the side wall of the primary inner plate. A tertiary inner plate is provided on the side wall of the secondary inner plate. The inner walls of the outer plate, the primary inner plate, the secondary inner plate, and the tertiary inner plate are all provided with sliding grooves and are slidably connected by the adjusting rod. Tongue and groove splicing strips are fixedly installed on both sides of the outer plate.

[0008] The adjusting rod has a sliding column 1 slidably installed on the inner wall of the slide groove. An inner connecting rod is fixedly installed on the outer wall of the sliding column 1. Another sliding column 1 is fixedly installed on the side end of the inner connecting rod. An outer connecting rod is slidably installed on the outer wall of the inner connecting rod. Sliding columns 2 are fixedly installed at both ends of the outer connecting rod. A lead screw is rotatably installed at the center connection of the inner connecting rod, and the outer wall of the lead screw is fixedly connected to the inner wall of the outer connecting rod.

[0009] Furthermore, the screw of the height adjustment support is slidably connected to the inner wall of the ear plate, and the screw is threadedly connected to the outer wall at the bottom of the ear plate. A base plate is fixedly installed at the bottom of the screw, and fixing bolts are fixedly installed at the four corners of the base plate. The adjustment rod realizes the relative displacement between the outer plate, the first-level inner plate, the second-level inner plate, and the third-level inner plate through the sliding cooperation between the sliding column and the sliding groove.

[0010] Furthermore, the outer panel, the first-level inner panel, the second-level inner panel, and the third-level inner panel form a nested wrapping structure; in the contracted state, the inner walls of the first-level inner panel, the second-level inner panel, and the third-level inner panel are all flush with the inner wall of the outer panel.

[0011] Furthermore, the hoop body of the annular clamp abuts against the outer wall of the outer plate, and a clamping plate is fixedly installed on the inner wall of the hoop. The inner wall of the clamping plate can clamp and abut against the tongue and groove joint strips of two adjacent outer plate side walls. An ear plate is fixedly installed on the outer wall of the hoop. Connecting grooves are opened at both the upper and lower ends of the tongue and groove joint strips, and adjacent tongue and groove joint strips can be fixedly connected by screws.

[0012] Furthermore, the number of ear plates is six, the spacing angle between the six ear plates is 60 degrees, and the tongue and groove joint sidewall is provided with a sealing strip, which is removable and replaceable.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the nested structure of the outer plate of the arc-shaped template unit with the first-level inner plate, the second-level inner plate and the third-level inner plate, and the adjustment of the screw drive of the adjusting rod, it can flexibly adapt to the wind turbine foundation platform of different diameters. There is no need to customize exclusive templates for specific specifications, which reduces the initial investment in equipment procurement and simplifies inventory management.

[0015] 2. The clamping plate of the ring clamp and the tongue and groove joint abut against each other, together with the connecting groove and sealing strip of the tongue and groove joint, which not only enhances the overall rigidity of the formwork splicing, but also avoids the problem of grout leakage in traditional formwork joints;

[0016] 3. The height adjustment support ensures that the template does not shift or deform under grouting pressure through precise adjustment of the screw and adjusting nut and tightening of the fixing bolt, further guaranteeing the quality of secondary grouting construction and laying the foundation for the long-term stable operation of the blower. Attached Figure Description

[0017] Figure 1 A front structural diagram of a secondary grouting formwork support tool for a wind turbine foundation pier;

[0018] Figure 2 This is a schematic diagram of the adjusted structure of a secondary grouting formwork tool for a wind turbine foundation pier.

[0019] Figure 3 A schematic diagram of the enlarged structure of a ring clamp for a secondary grouting formwork tool for a wind turbine foundation pier;

[0020] Figure 4 This is a schematic diagram of the unfolded structure of an arc-shaped template unit of a secondary grouting formwork tool for a wind turbine foundation pier.

[0021] Figure 5 This is an enlarged schematic diagram of the adjusting rod structure of a secondary grouting formwork support tool for a wind turbine foundation pier.

[0022] In the diagram: 1. Arc-shaped template unit; 11. Outer panel; 12. Primary inner panel; 13. Secondary inner panel; 14. Tertiary inner panel; 15. Slide groove; 16. Tongue and groove joint; 17. Connecting groove; 18. Adjusting rod; 181. Slide column one; 182. Slide column two; 183. Outer connecting rod; 184. Inner connecting rod; 185. Screw rod; 2. Height adjustment support; 21. Base plate; 22. Fixing bolt; 23. Screw rod; 24. Adjusting nut; 3. Ring clamp; 31. Clamp body; 32. Ear plate; 33. Clamping plate. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-5This utility model provides a technical solution: a secondary grouting formwork tool for a wind turbine foundation pier, comprising an arc-shaped template unit 1, a height-adjustable support 2, and an annular clamp 3. The inner walls of the outer plate 11 of the arc-shaped template unit 1 are provided with grooves 15 at both ends, and adjusting rods 18 are slidably installed on the inner walls of both grooves 15. A primary inner plate 12 is slidably installed on the side of the adjusting rod 18, a secondary inner plate 13 is provided on the side wall of the primary inner plate 12, and a tertiary inner plate 14 is provided on the side wall of the secondary inner plate 13. The inner walls of the outer plate 11, primary inner plate 12, secondary inner plate 13, and tertiary inner plate 14 are all provided with grooves 15 and are slidably connected by the adjusting rods 18. Through the coordinated transmission of the sliding column 181, inner connecting rod 184, outer connecting rod 183, and lead screw 185 of the adjusting rod 18, precise expansion and contraction of multiple plates along the grooves 15 are achieved. Tongue-and-groove splicing strips 16 are fixedly installed on both sides of the outer plate 11, providing a foundation for subsequent annular splicing and simplifying the assembly process. The sliding column 181 is slidably installed on the inner wall of the slide groove 15. An inner connecting rod 184 is fixedly installed on the outer wall of the sliding column 181. Through the rigid connection between the inner connecting rod 184 and the sliding column 181, and in conjunction with the lead screw 185 for transmission and guidance of the slide groove 15, the expansion and contraction displacement of the first-stage inner plate 12, the second-stage inner plate 13, and the third-stage inner plate 14 is controllable, ensuring the dimensional accuracy of the grouting space. Another sliding column 181 is fixedly installed on the side end of the inner connecting rod 184, and the outer wall of the inner connecting rod 184 is slidably installed. There is an outer connecting rod 183, and sliding columns 182 are fixedly installed at both ends of the outer connecting rod 183. A lead screw 185 is rotatably installed at the center connection of the inner connecting rod 184, and the outer wall of the lead screw 185 is fixedly connected to the inner wall of the outer connecting rod 183, forming a linkage mechanism of rotating the lead screw 185, extending and retracting the connecting rod, and sliding the plate. At the same time, the outer plate 11 and the multi-level inner plate are connected at multiple points through the adjusting rod 18. Combined with the mechanical properties of the arc structure, the overall rigidity of the template is improved, and deformation under grouting pressure is avoided.

[0025] Please see Figures 1-5 This utility model provides a technical solution: a secondary grouting formwork tool for a wind turbine foundation pier, including a ring clamp 31 whose clamp body 31 abuts against the outer wall of the outer plate 11 and provides radial pressure. A clamping plate 33 is fixedly installed on the inner wall of the clamp body 31. The inner wall of the clamping plate 33 can clamp and abut against the tongue and groove joint strips 16 of the side walls of two adjacent outer plates 11 and form a lateral limit. The ring structure of the clamp body 31 can integrate multiple arc-shaped template units 1 into a whole, effectively dispersing the grouting pressure and avoiding displacement caused by uneven force on a single template. An ear plate 32 is fixedly installed on the outer wall of the clamp body 31. The ear plate 32 provides a precise connection point for the height adjustment support 2.

[0026] Please see Figures 1-5This utility model provides a technical solution: a secondary grouting formwork support tool for a wind turbine foundation, including a screw 23 of a height adjustment support 2 that is slidably connected to the inner wall of an ear plate 32. The sliding fit between the screw 23 and the ear plate 32 is matched with an adjusting nut 24 threadedly connected to the bottom outer wall of the ear plate 32. The formwork height can be finely adjusted through threaded transmission. A base plate 21 is fixedly installed at the bottom of the screw 23. Fixing bolts 22 are fixedly installed at the four corners of the base plate 21. The base plate 21 is rigidly connected to the foundation foundation through the four corner fixing bolts 22 to form a stable support system and prevent the formwork from shifting due to vibration or pressure during the grouting process.

[0027] Please see Figures 1-5 This utility model provides a technical solution: a secondary grouting formwork tool for a wind turbine foundation pier, including a tongue and groove joint strip 16 with connecting grooves 17 at both ends. The connecting grooves 17 provide precise points for screw fixing. Adjacent tongue and groove joint strips 16 can be fixedly connected by screws, which can make the tongue and groove joint strips 16 of adjacent formwork fit tightly, reduce joint gaps, and reduce the risk of grout leakage.

[0028] Please see Figures 1-5 This utility model provides a technical solution: a secondary grouting formwork tool for a wind turbine foundation pier, comprising six ear plates 32, with a spacing angle of 60 degrees between the six ear plates 32, so that the supporting force of the height adjustment support 2 is evenly distributed on the annular formwork, avoiding formwork deformation caused by localized force concentration.

[0029] Please see Figures 1-5 This utility model provides a technical solution: a secondary grouting formwork tool for a wind turbine foundation pier, comprising an adjusting rod 18 that achieves relative displacement between the outer plate 11, the first-level inner plate 12, the second-level inner plate 13, and the third-level inner plate 14 through the sliding engagement of the sliding column 181 and the sliding groove 15. The sliding engagement of the sliding column 181 and the sliding groove 15 also provides precise guidance for the expansion and contraction of the plate, avoiding jamming or displacement during the adjustment process.

[0030] Please see Figures 1-5 This utility model provides a technical solution: a secondary grouting formwork tool for a wind turbine foundation pier, comprising an outer plate 11, a primary inner plate 12, a secondary inner plate 13, and a tertiary inner plate 14 in a nested structure. This structure makes the formwork compact after shrinking, effectively reducing storage space occupation, reducing handling difficulty, and improving tool turnover efficiency. In the shrunken state, the inner walls of the primary inner plate 12, the secondary inner plate 13, and the tertiary inner plate 14 are flush with the inner wall of the outer plate 11, which can avoid unevenness of the inner wall caused by the nesting of the plates and ensure a smooth grouting layer surface.

[0031] Working principle: First, based on the target diameter of the wind turbine foundation pier, the screw 185 of the adjusting rod 18 in the rotating arc-shaped template unit 1 drives the outer connecting rod 183 to slide along the inner connecting rod 184, thereby causing the sliding column 181 and sliding column 182 to move within the sliding grooves 15 on the inner walls of the outer plate 11, the first-level inner plate 12, the second-level inner plate 13, and the third-level inner plate 14, respectively. This causes the inner plates, which are nested and wrapped in layers, to extend or retract relative to the outer plate 11 to adapt to the diameter of the grouting space. Then, multiple adjusted arc-shaped template units 1 are placed around the foundation pier, aligning the tongue and groove joints 16 of adjacent templates. The joints are then fixed with screws through the connecting grooves 17 at the upper and lower ends of the tongue and groove joints 16. At the same time, the detachable sealing strips on the side walls of the tongue and groove joints 16 enhance the sealing effect. Finally, the hoop 31 of the annular clamp 3 is fitted onto the template. On the outside of the board, the hoop 31 abuts against the outer wall of the outer board 11, and the clamping plate 33 on the inner wall holds the tongue and groove splice 16 of the adjacent template, realizing the stability and sealing of the ring splice of the template. The six ear plates 32 distributed at 60 degrees on the outer wall of the hoop 31 are used to connect with the screw 23 of the height adjustment support 2. The overall height of the template can be adjusted by rotating the adjusting nut 24 at the bottom of the screw 23. Then, the fixing bolts 22 at the four corners of the base plate 21 are used to fasten the support to the surface of the foundation platform to ensure the stability of the structure during construction. After the grouting is completed and the grout reaches the specified strength, the fixing bolts 22, adjusting nuts 24, ring hoop 3 and tongue and groove splice 16 are removed in sequence. The arc-shaped template units 1 are separated and the adjusting rod 18 is rotated to shrink the inner plate to be flush with the inner wall of the outer board 11 for easy storage and turnover.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A secondary grouting formwork tool for a wind turbine foundation pier, comprising an arc-shaped template unit (1), a height-adjustable support (2), and a ring clamp (3), characterized in that: The outer plate (11) of the arc-shaped template unit (1) has grooves (15) at both the upper and lower ends of the inner wall, and an adjusting rod (18) is slidably installed on the inner wall of each of the two grooves (15). The adjusting rod (18) is slidably mounted with a first-level inner plate (12), the side wall of the first-level inner plate (12) is provided with a second-level inner plate (13), the side wall of the second-level inner plate (13) is provided with a third-level inner plate (14), the inner walls of the outer plate (11), the first-level inner plate (12), the second-level inner plate (13) and the third-level inner plate (14) are all provided with sliding grooves (15), and are slidably connected by the adjusting rod (18), and tongue and groove splicing strips (16) are fixedly installed on both sides of the outer plate (11); The first slide column (181) of the adjusting rod (18) is slidably installed on the inner wall of the slide groove (15). An inner connecting rod (184) is fixedly installed on the outer wall of the first slide column (181). Another slide column (181) is fixedly installed on the side end of the inner connecting rod (184). An outer connecting rod (183) is slidably installed on the outer wall of the inner connecting rod (184). Slide columns (182) are fixedly installed at both ends of the outer connecting rod (183). A lead screw (185) is rotatably installed at the center connection of the inner connecting rod (184), and the outer wall of the lead screw (185) is fixedly connected to the inner wall of the outer connecting rod (183).

2. The secondary grouting formwork tool for wind turbine foundation piers as described in claim 1, characterized in that: The hoop (31) of the ring clamp (3) abuts against the outer wall of the outer plate (11). A clamping plate (33) is fixedly installed on the inner wall of the hoop (31). The inner wall of the clamping plate (33) can be clamped and abutted against the tongue and groove joint strips (16) of the side walls of two adjacent outer plates (11). An ear plate (32) is fixedly installed on the outer wall of the hoop (31).

3. The secondary grouting formwork tool for wind turbine foundation piers as described in claim 2, characterized in that: The screw (23) of the height adjustment support (2) is slidably connected to the inner wall of the ear plate (32). The screw (23) is threaded with an adjusting nut (24) on the outer wall at the bottom of the ear plate (32). A base plate (21) is fixedly installed at the bottom of the screw (23). Fixing bolts (22) are fixedly installed at the four corners of the base plate (21).

4. The secondary grouting formwork tool for wind turbine foundation piers as described in claim 3, characterized in that: The tongue and groove joint (16) has connecting grooves (17) at both the top and bottom ends, and adjacent tongue and groove joints (16) can be fixedly connected by screws.

5. The secondary grouting formwork tool for wind turbine foundation piers as described in claim 4, characterized in that: The number of ear plates (32) is six, and the interval angle between the six ear plates (32) is 60 degrees.

6. The secondary grouting formwork tool for wind turbine foundation piers as described in claim 5, characterized in that: The adjusting rod (18) achieves relative displacement between the outer plate (11), the first-level inner plate (12), the second-level inner plate (13), and the third-level inner plate (14) through the sliding engagement of the sliding column (181) and the sliding groove (15).

7. The secondary grouting formwork tool for wind turbine foundation piers as described in claim 6, characterized in that: The tongue and groove joint (16) is provided with a sealing strip on its side wall, and the sealing strip is removable and replaceable.

8. The secondary grouting formwork tool for wind turbine foundation piers as described in claim 7, characterized in that: The outer panel (11), the first-level inner panel (12), the second-level inner panel (13), and the third-level inner panel (14) form a nested wrapping structure; in the contracted state, the inner walls of the first-level inner panel (12), the second-level inner panel (13), and the third-level inner panel (14) are flush with the inner wall of the outer panel (11).

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