A wind turbine anchor bolt foundation partition grouting device and a construction method thereof

Abstract

The application discloses a wind power generator anchor bolt foundation partition grouting device and a construction method thereof and belongs to the technical field of wind power generator anchor bolt foundation construction. The device comprises an outer formwork, an inner formwork and an anchor bolt assembly. The inner formwork is located on the inner side of the outer formwork. The anchor bolt assembly is arranged between the outer formwork and the inner formwork. The lower part of the anchor bolt assembly is provided with a partition grouting mechanism. The outer formwork is connected with a demolding assembly. The outer formwork is provided with an upper anchor plate position adjusting mechanism which is connected with the upper part of the anchor bolt assembly. The position of the upper anchor plate is adjusted in the horizontal direction by the upper anchor plate position adjusting mechanism and is leveled. The upper anchor plate does not need to be repeatedly leveled and fixed. The outer formwork is separated from the concrete by the demolding assembly, time and labor are saved, and the construction convenience is improved. The surrounding of the lower anchor plate is partitioned and grouted by the partition grouting mechanism. The surrounding concrete of the lower anchor plate is densely filled and defects such as honeycomb holes can be prevented.

Description

Technical Field

[0001] This invention relates to a zoned grouting device for wind turbine anchor foundations and its construction method, belonging to the technical field of wind turbine anchor foundation construction. Background Technology

[0002] The foundation of the wind turbine generator set is a concrete structure with an internal anchor bolt assembly. The anchor bolt assembly consists of upper and lower anchor plates and anchor bolts. The upper anchor plate is filled with high-strength grout on the concrete structure. A special mold is used during grouting to ensure the designed shape.

[0003] For example, Chinese patent document CN217267481U discloses a high-strength grouting protection device for wind turbine anchor bolt foundations. The protection device is a rectangular protective frame with an observation hole at the top and a first through hole and a second through hole on each side. The protection device contains an outer mold frame and an inner mold frame, which are annular, with the inner mold frame located inside the outer mold frame. A pre-embedded steel plate is provided between the outer mold frame and the inner mold frame, forming a first gap between the pre-embedded steel plate and the outer mold frame, and a second gap between the pre-embedded steel plate and the inner mold frame. The pre-embedded steel plate is fixed to the outer mold frame by a tightening device.

[0004] This novel high-strength grouting protection device for wind turbine anchor bolt foundations can isolate the grouting area from the external environment, ensuring the overall construction quality of high-strength grouting. Furthermore, it is unaffected by temperature, environmental factors, or other factors during the high-strength grouting process, and the grout is protected from impurities, thus improving the construction speed. However, it still has the following shortcomings:

[0005] First, during grouting, the device can only adjust the position of the upper anchor plate in the horizontal direction, but cannot level the upper anchor plate. This results in the upper anchor plate needing to be repeatedly leveled and fixed during grouting, which is cumbersome and affects construction efficiency.

[0006] Secondly, the concrete will bond with the formwork after it is formed, which makes it time-consuming and laborious to remove the formwork on the outside of the concrete, reducing the convenience of construction.

[0007] Third, the concrete around the lower anchor plate is poured as a whole, which can easily lead to problems such as the concrete around the lower anchor plate not being dense and the appearance of honeycomb holes. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a wind turbine anchor bolt foundation zonal grouting device and its construction method.

[0009] This invention is achieved through the following technical solution:

[0010] A zonal grouting device for wind turbine anchor bolt foundations includes an outer template, an inner template, and an anchor bolt assembly. The inner template is located inside the outer template, and the anchor bolt assembly is disposed between the outer template and the inner template. A zonal grouting mechanism is provided at the lower part of the anchor bolt assembly. A demolding component is connected to the outer template, and an upper anchor plate position adjustment mechanism is provided on the outer template, which is connected to the upper part of the anchor bolt assembly.

[0011] The outer template is divided into two parts, including two semi-circular arc-shaped outer template segments. The cross-sectional shape of the two outer template segments is L-shaped, and multiple wedge-shaped support blocks A are provided at equal intervals on the outer side of the two outer template segments. A demolding component is connected to the middle of the two outer template segments.

[0012] The inner template is arc-shaped, and the cross-sectional shape of the inner template is L-shaped. Multiple wedge-shaped support blocks B are provided at equal intervals on the inner side of the inner template.

[0013] The demolding assembly includes a connecting plate, a fixing block, and a tensioning bolt. The connecting plate is fixed on the outer template, and the middle part of the tensioning bolt is threadedly connected to the fixing block, while one end is rotatably connected to the connecting plate.

[0014] The anchor bolt assembly includes a lower anchor plate and an upper anchor plate, with the upper anchor plate located directly above the lower anchor plate and connected to the lower anchor plate by multiple evenly distributed anchor bolts.

[0015] The upper anchor plate position adjustment mechanism includes a clamping component and multiple position adjustment components. The clamping component is connected to the upper anchor plate, and the multiple position adjustment components are evenly distributed and fixed on the outer template, with the position adjustment components abutting against the clamping component.

[0016] The clamping assembly includes two semi-circular fastening rings. The two arc-shaped ends of the two fastening rings are connected by connecting bolts and nuts. The lower end of the inner circular surface of the two fastening rings is provided with a positioning groove. The diameter of the positioning groove is consistent with the outer diameter of the upper anchor plate, and the length of the positioning groove along the axial direction of the fastening ring is consistent with the thickness of the upper anchor plate. The outer circular surface of the two fastening rings is provided with an adjustment groove along the circumferential direction.

[0017] The position adjustment assembly includes a support frame, a lifting block, and an adjusting bolt. The support frame is fixed on the outer template and has a sliding groove. One end face of the lifting block is in contact with the surface of the support frame. A set bolt is threaded onto the lifting block. One end of the set bolt passes through the sliding groove on the support frame and is slidably connected to the sliding groove. The adjusting bolt is threaded onto the top of the support frame and one end of the adjusting bolt is rotatably connected to the lifting block.

[0018] The grouting mechanism includes an annular grouting groove with a U-shaped cross-section. The U-shaped opening of the grouting groove is in contact with the top surface of the lower anchor plate. Multiple grouting pipes and multiple grout discharge pipes are connected to the top of the grouting groove.

[0019] The grouting trench is divided into four sections. Each section of the grouting trench has a grout discharge sleeve at both ends of the top, and the grout discharge sleeve is threaded to the grout discharge pipe. Each section of the grouting trench has a grouting sleeve at the middle of the top, and the grouting sleeve is threaded to the grouting pipe. Each section of the grouting trench has multiple protective caps at equal intervals in the circumferential direction on the top. The protective caps are connected to the interior of the grouting trench, and multiple holes and slots are evenly distributed on the side wall of the protective caps.

[0020] A construction method for a zoned grouting device for wind turbine anchor bolt foundations includes the following steps:

[0021] Step 1: Concrete foundation construction: According to the design drawings, tie the reinforcing bars, and during the process of tying the reinforcing bars, complete the installation and fixing of the lower anchor plate and anchor bolts in the anchor bolt assembly. Then, erect the formwork and pour the concrete. After the concrete has solidified and reached the design strength, the concrete foundation is obtained.

[0022] Step 2: Install the zonal grouting mechanism: Install the zonal grouting mechanism onto the lower anchor plate and anchor bolts, and connect the zonal grouting mechanism to the pump body at the bottom of the concrete tank;

[0023] Step 3: Install the outer formwork and inner formwork: Install and fix the outer formwork and demolding assembly to the concrete foundation using installation bolts, and then install and fix the inner formwork coaxially to the inside of the outer formwork using installation bolts.

[0024] Step 4: Install the upper anchor plate: Install the clamping assembly onto the upper anchor plate, then thread the upper anchor plate onto the anchor bolt. Use the clamping assembly to adjust the position of the upper anchor plate in the horizontal direction using the multiple position adjustment assembly, and level the upper anchor plate.

[0025] Step 5, Grouting: Pour concrete grout into the gap between the outer and inner formwork. After the concrete grout has solidified, use the demolding components to detach the outer formwork from the concrete, and then detach the inner formwork from the concrete.

[0026] Step 6: Grouting the lower anchor plate: Start the pump and use the zoned grouting mechanism to grout the lower anchor plate in sections, and then the construction is completed.

[0027] In step four, first rotate the set bolt in the position adjustment assembly to finely adjust the upper anchor plate to the required position in the horizontal direction, and then rotate the adjusting bolt in the position adjustment assembly to level the upper anchor plate.

[0028] In step six, during the grouting process of the lower anchor plate, the grouting is stopped when the grout discharged from the grout pipe fills the grout discharge pipe without any air. After the grouting is completed, grout is filled into the grouting pipe and the grout discharge pipe, and the external ports of the grouting pipe and the grout discharge pipe are sealed with waterproof sealant.

[0029] The beneficial effects of this invention are as follows: the upper anchor plate in the anchor bolt assembly is adjusted horizontally by the upper anchor plate position adjustment mechanism, and the upper anchor plate is leveled. The upper anchor plate does not need to be repeatedly leveled and fixed, making the operation simple and improving construction efficiency; after the concrete grout is fixed and formed, the outer formwork is detached from the concrete by the demolding component, saving time and effort and improving construction convenience; the sectional grouting mechanism grouts the area around the lower anchor plate in sections, and the concrete around the lower anchor plate is filled densely, which can prevent defects such as honeycomb holes. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the assembly structure of the device, pump body, and concrete tank of the present invention.

[0031] Figure 2 This is a schematic diagram of the structure of the device of the present invention when it is installed on a concrete foundation;

[0032] Figure 3 This is a schematic diagram of the position adjustment component of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the clamping assembly and the upper anchor plate before assembly of the present invention;

[0034] Figure 5 This is a schematic diagram of the assembly structure of the outer mold section, mounting bolts, and demolding assembly of the present invention;

[0035] Figure 6 This is a schematic diagram of the assembly structure of the anchor bolt assembly and the zoned grouting mechanism of the present invention;

[0036] Figure 7 This is a schematic diagram of the grouting groove of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the four-part grouting groove of the present invention.

[0038] In the diagram: 1-Outer formwork, 100-Outer formwork section, 101-Wedge support block A, 2-Mounting bolt, 3-Connecting plate, 4-Fixing block, 5-Tightening bolt, 6-Inner formwork, 600-Wedge support block B, 7-Upper anchor plate, 8-Anchor bolt, 9-Setting bolt, 10-Support frame, 11-Lifting block, 12-Adjusting bolt, 13-Connecting bolt, 14-Nut, 16-Fastening ring, 160-Positioning groove, 161-Adjusting groove, 17-Pump body, 18-Grouting pipe, 19-Concrete tank, 20-Concrete foundation, 21-Grouting groove, 22-Grouting pipe, 23-Grouting sleeve, 24-Grouting sleeve, 25-Protective cap. Detailed Implementation

[0039] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0040] like Figures 1 to 8 As shown, the wind turbine anchor bolt foundation zoning grouting device of the present invention includes an outer template 1, an inner template 6, and an anchor bolt assembly. The inner template 6 is located inside the outer template 1, and the anchor bolt assembly is installed between the outer template 1 and the inner template 6. A zoning grouting mechanism is installed at the lower part of the anchor bolt assembly. A demolding component is connected to the outer template 1, and an upper anchor plate position adjustment mechanism is installed on the outer template 1, and the upper anchor plate position adjustment mechanism is connected to the upper part of the anchor bolt assembly. In use, the position of the upper anchor plate 7 in the anchor bolt assembly is adjusted horizontally by the upper anchor plate position adjustment mechanism, and the upper anchor plate 7 is leveled. The upper anchor plate 7 does not need to be repeatedly leveled and fixed, making the operation simple and improving construction efficiency. After the concrete grout is fixed and formed, the outer template 1 is detached from the concrete by the demolding component, saving time and effort and improving construction convenience. The zoning grouting mechanism performs grouting in zones around the lower anchor plate, and the concrete around the lower anchor plate is filled densely, which can prevent defects such as honeycomb voids.

[0041] The outer formwork 1 is divided into two semi-circular arc-shaped outer formwork segments 100. Both segments 100 have an L-shaped cross-section, and multiple wedge-shaped support blocks A101 are welded at equal intervals to the outer sides of each segment. A demolding assembly is connected to the middle of each segment. The wedge-shaped support blocks A101 increase the rigidity of the outer formwork 1, preventing deformation caused by concrete expansion during solidification. Dividing the outer formwork 1 into two semi-circular arc-shaped segments 100 and connecting the demolding assembly at the middle of each segment facilitates demolding.

[0042] The inner template 6 is arc-shaped with an L-shaped cross-section, and multiple wedge-shaped support blocks B600 are welded at equal intervals on the inner side of the inner template 6. The multiple wedge-shaped support blocks B600 increase the rigidity of the inner template 6 and prevent deformation of the inner template 6 due to the expansion of concrete during the solidification process.

[0043] The demolding assembly includes a connecting plate 3, a fixing block 4, and a tension bolt 5. The connecting plate 3 is fixedly welded to the outer template 1. The middle part of the tension bolt 5 is threadedly connected to the fixing block 4, and one end is rotatably connected to the connecting plate 3.

[0044] The anchor bolt assembly includes a lower anchor plate and an upper anchor plate 7. The upper anchor plate 7 is located directly above the lower anchor plate, and the upper anchor plate 7 is connected to the lower anchor plate by multiple evenly distributed anchor bolts 8.

[0045] The upper anchor plate position adjustment mechanism includes a clamping component and four position adjustment components. The clamping component is connected to the upper anchor plate 7, and the four position adjustment components are evenly distributed and fixed on the outer template 1, with the position adjustment components abutting against the clamping component.

[0046] The clamping assembly includes two semi-circular fastening rings 16. The two arc-shaped ends of the two fastening rings 16 are connected by connecting bolts 13 and nuts 14. A positioning groove 160 is formed at the lower end of the inner circular surface of each of the two fastening rings 16. The diameter of the positioning groove 160 is the same as the outer diameter of the upper anchor plate 7, and the length of the positioning groove 160 along the axial direction of the fastening ring 16 is the same as the thickness of the upper anchor plate 7. An adjustment groove 161 is formed circumferentially on the outer circular surface of the two fastening rings 16. For example... Figure 4 As shown, during use, the upper anchor plate 7 is positioned on the clamping assembly using the positioning groove 160. After the upper anchor plate 7 is held in place by the two fastening rings 16, the nut 14 on the connecting bolt 13 is tightened to fix the upper anchor plate 7 inside the two fastening rings 16. The width of the adjusting groove 161 is equal to the diameter of the end of the set bolt 9 furthest from the bolt head.

[0047] The position adjustment assembly includes a support frame 10, a lifting block 11, and an adjusting bolt 12. The support frame 10 is fixedly welded to the outer template 1, and a sliding groove is provided on the support frame 10. One end face of the lifting block 11 is in contact with the surface of the support frame 10, and a set bolt 9 is threadedly connected to the lifting block 11. One end of the set bolt 9 passes through the sliding groove on the support frame 10, and the set bolt 9 is slidably connected to the sliding groove. The adjusting bolt 12 is threadedly connected to the top of the support frame 10, and one end of the adjusting bolt 12 is rotatably connected to the lifting block 11. In use, the set bolt 9 is slidably connected to the sliding groove, that is, the diameter of the threaded section of the set bolt 9 is the same as the width of the sliding groove. The end of the set bolt 9 away from the lifting block 11 is inserted into the adjusting groove 161 and abuts against the fastening ring 16. One end face of the lifting block 11 is in contact with the surface of the support frame 10 to prevent the lifting block 11 from rotating around the adjusting bolt 12; one end of the adjusting bolt 12 is rotatably connected to the lifting block 11 to prevent the lifting block 11 from rotating around the set bolt 9; ultimately, the lifting block 11 can only move up and down along the length of the slide.

[0048] The sectional grouting mechanism includes an annular grouting groove 21 with a U-shaped cross-section. The U-shaped opening of the grouting groove 21 is flush with the top surface of the lower anchor plate. Multiple grouting pipes 18 and multiple grout discharge pipes 22 are connected to the top of the grouting groove 21. In use, the upper ends of the grouting pipes 18 and grout discharge pipes 22 pass through the gap between the outer template 1 and the upper anchor plate 7, or the gap between the inner template 6 and the upper anchor plate 7.

[0049] The grouting groove 21 is divided into four sections. Each section of the grouting groove 21 has a grout discharge sleeve 24 at both ends of its top, and the grout discharge sleeve 24 is threadedly connected to the grout discharge pipe 22. Each section of the grouting groove 21 has a grouting sleeve 23 at the middle position of its top, and the grouting sleeve 23 is threadedly connected to the grouting pipe 18. Each section of the grouting groove 21 has multiple protective caps 25 at equal intervals in the circumferential direction on its top. The protective caps 25 are connected to the interior of the grouting groove 21, and multiple holes and slots are evenly distributed on the side wall of the protective caps 25.

[0050] A construction method for a zoned grouting device for wind turbine anchor bolt foundations includes the following steps:

[0051] Step 1: Concrete Foundation Construction: According to the design drawings, tie the reinforcing bars, and during the reinforcement tying process, complete the installation and fixing of the lower anchor plate and anchor bolt 8 in the anchor bolt assembly. Then, erect the formwork and pour the concrete. After the concrete has solidified to the design strength, the concrete foundation 20 is obtained. During the construction of the concrete foundation 20, threaded sleeves can be pre-embedded in the concrete. The threaded sleeves are used to connect with the installation bolts 2, which facilitates the installation and fixing of the outer formwork 1, the demolding assembly, and the inner formwork 6 onto the concrete foundation 20.

[0052] Step 2: Install the zonal grouting mechanism: Install the zonal grouting mechanism onto the lower anchor plate and anchor bolt 8, and connect the zonal grouting mechanism to the pump body 17 at the bottom of the concrete tank 19.

[0053] Step 3: Install the outer formwork and inner formwork: Install and fix the outer formwork 1 and the demolding assembly onto the concrete foundation 20 using the installation bolts 2 respectively. Then, install and fix the inner formwork 6 coaxially to the inside of the outer formwork 1 using the installation bolts 2.

[0054] Step 4: Install the upper anchor plate: Install the clamping assembly onto the upper anchor plate 7, then thread the upper anchor plate 7 onto the anchor bolt 8. Use the clamping assembly to adjust the position of the upper anchor plate 7 in the horizontal direction using the multiple position adjustment assembly, and level the upper anchor plate 7. In use, the upper anchor plate 7 is placed between the two fastening rings 16, with the lower end face of the fastening rings 16 flush with the bottom surface of the upper anchor plate 7. The connecting bolts 13 are inserted into the slots at both ends of the fastening rings 16. The two fastening rings 16 are connected and tightened by the nuts 14 and the connecting bolts 13, fixing the upper anchor plate 7 between the two fastening rings 16. By rotating the set bolt 9, one end of the set bolt 9 is inserted into the adjustment slot 161 on the outside of the fastening ring 16. The horizontal position of the upper anchor plate 7 is finely adjusted by rotating the set bolt 9. Then, the adjusting bolt 12 is rotated. As the adjusting bolt 12 rotates, it drives the lifting block 11 to move up and down. As the lifting block 11 moves up and down, it drives the set bolt 9 to move up and down. Thus, the edge of the fastening rings 16 is adjusted up and down by the set bolt 9, thereby achieving the effect of leveling the upper anchor plate 7, preventing the upper anchor plate 7 from tilting, and quickly leveling and fixing the upper anchor plate 7 without the need for repeated leveling and fixing. The operation is simple and can improve construction efficiency.

[0055] Step 5, Grouting: Pour concrete grout into the gap between the outer formwork 1 and the inner formwork 6. After the concrete grout has solidified, use the demolding assembly to detach the outer formwork 1 from the concrete, and then detach the inner formwork 6 from the concrete. Grouting is then performed into the gap between the outer formwork 1 and the inner formwork 6 to form a cavity between the grouting groove 21 and the lower anchor plate. After the concrete grout has solidified, remove the mounting bolts 2 at the bottom of the outer formwork 1 and the inner formwork 6. Then, rotate the tension bolt 5 to gradually move it away from the upper anchor plate 7. As the tension bolt 5 moves, it pulls the connecting plate 3, thereby causing the outer formwork 1 to move outward and detach from the concrete through the connecting plate 3, completing the demolding of the outer formwork 1.

[0056] Before pouring concrete grout into the gap between the outer formwork 1 and the inner formwork 6, clean the surface of the formwork and concrete foundation that will come into contact with the grout, ensuring that there is no loose gravel, oil, dust, grout, or wax.

[0057] The levelness of the upper anchor plate 7 shall not exceed 1.5 mm before grouting and shall not exceed 2 mm after grouting. After grouting, the grout shall be tightly bonded to the upper anchor plate 7 and the anchor bolt 8, and shall bear the load evenly after gaining strength. The levelness of the upper anchor plate 7 must be strictly measured and remeasured before grouting construction, after grouting construction, and before hoisting the fan.

[0058] Step Six: Grouting of Lower Anchor Plates: Start pump body 17 and grout the lower anchor plates in sections through the sectional grouting mechanism to complete the construction. The grout inside concrete tank 19 is injected into grouting pipe 18 through pump body 17, and then injected into grouting trench 21 through grouting pipe 18. The function of grout discharge pipe 22 is to remove air from the grouting area in grouting trench 21 during grouting and to ensure that the grout fully fills all corners. Grouting is stopped when the grout discharged from grout discharge pipe 22 fills the grout discharge pipe and is free of air. After grouting, fill grouting pipe 18 and grout discharge pipe 22 with grout and waterproof seal the external ports of the pipes. By pre-installing the grouting groove 21 on the lower anchor plate and grouting in sections, with each section of the grouting groove 21 connected to a grouting pipe 18 in the middle and a grout discharge pipe 22 at both ends, compared with the existing construction method of integrally pouring concrete around the lower anchor plate, defects formed around the lower anchor plate 20 during concrete pouring can be eliminated. In addition, the top of the U-shaped grouting groove 21, which is inverted on the lower anchor plate, has a round hole and a protective cap 25. On the one hand, it can ensure that concrete does not enter the interior of the U-shaped grouting groove 21 when pouring concrete into the gap between the outer formwork 1 and the inner formwork 6. On the other hand, when pressure grouting is performed into the grouting groove 21, the grout material will flow out from the hole groove on the side wall of the protective cap 25 to fill the defects formed when the concrete is poured on the upper side of the grouting groove 21.

[0059] Once grouting begins, it must be carried out continuously without interruption to prevent the formation of faults, the accumulation of air bubbles, and the absence of grout. The grouting material flows freely from the grouting pipe 18 from the mixing point to the grouting point until all the grout is discharged, and the grouting time should be shortened as much as possible.

[0060] In step four, first rotate the set bolt 9 in the position adjustment assembly to finely adjust the upper anchor plate 7 to the required position in the horizontal direction, and then rotate the adjusting bolt 12 in the position adjustment assembly to level the upper anchor plate 7.

[0061] In step six, during the grouting process of the lower anchor plate, the grouting ends when the grout discharged from the grout discharge pipe 22 fills the grout discharge pipe without any air. After the grouting is completed, grout is filled into the grouting pipe 18 and the grout discharge pipe 22, and the external ports of the grouting pipe 18 and the grout discharge pipe 22 are sealed with waterproof sealant.

Claims

1. A zoned grouting device for wind turbine anchor bolt foundations, characterized in that: It includes an outer template (1), an inner template (6), and an anchor bolt assembly. The inner template (6) is located inside the outer template (1). The anchor bolt assembly is located between the outer template (1) and the inner template (6). The lower part of the anchor bolt assembly is provided with a partitioned grouting mechanism. The outer template (1) is connected to a demolding component. The outer template (1) is provided with an upper anchor plate position adjustment mechanism, and the upper anchor plate position adjustment mechanism is connected to the upper part of the anchor bolt assembly. The anchor bolt assembly includes a lower anchor plate and an upper anchor plate (7). The upper anchor plate (7) is located directly above the lower anchor plate, and the upper anchor plate (7) is connected to the lower anchor plate by multiple evenly distributed anchor bolts (8). The upper anchor plate position adjustment mechanism includes a clamping component and multiple position adjustment components. The clamping component is connected to the upper anchor plate (7), and the multiple position adjustment components are evenly distributed and fixed on the outer template (1), with the position adjustment components abutting against the clamping component. The clamping assembly includes two semi-circular fastening rings (16). The two arc-shaped ends of the two fastening rings (16) are connected by connecting bolts (13) and nuts (14). The lower end of the inner circular surface of the two fastening rings (16) is provided with a positioning groove (160). The diameter of the positioning groove (160) is consistent with the outer diameter of the upper anchor plate (7), and the length of the positioning groove (160) along the axial direction of the fastening ring (16) is consistent with the thickness of the upper anchor plate (7). The outer circular surface of the two fastening rings (16) is provided with an adjustment groove (161) along the circumferential direction. The partitioned grouting mechanism includes a ring-shaped grouting groove (21), the cross-sectional shape of the grouting groove (21) is U-shaped, and the U-shaped opening end of the grouting groove (21) is in contact with the top surface of the lower anchor plate. The top of the grouting groove (21) is connected to multiple grouting pipes (18) and multiple grout discharge pipes (22). The grouting groove (21) is divided into four sections. Each section of the grouting groove (21) has a grout discharge sleeve (24) at both ends of the top, and the grout discharge sleeve (24) is threaded to the grout discharge pipe (22). Each section of the grouting groove (21) has a grouting sleeve (23) at the middle position of the top, and the grouting sleeve (23) is threaded to the grouting pipe (18). Each section of the grouting groove (21) has multiple protective caps (25) at equal intervals in the circumferential direction at the top. The protective caps (25) are connected to the interior of the grouting groove (21), and multiple holes and slots are evenly distributed on the side wall of the protective caps (25).

2. The wind turbine anchor bolt foundation zoning grouting device as described in claim 1, characterized in that: The outer template (1) is divided into two parts, including two semi-circular outer template sections (100). The cross-sectional shape of the two outer template sections (100) is L-shaped, and multiple wedge-shaped support blocks A (101) are provided at equal intervals on the outer side of the two outer template sections (100). Demolding components are connected to the middle of the two outer template sections (100). The inner template (6) is arc-shaped, and the cross-sectional shape of the inner template (6) is L-shaped. Multiple wedge-shaped support blocks B (600) are provided at equal intervals on the inner side of the inner template (6).

3. The wind turbine anchor bolt foundation zoning grouting device as described in claim 1, characterized in that: The demolding assembly includes a connecting plate (3), a fixing block (4), and a tensioning bolt (5). The connecting plate (3) is fixed on the outer template (1). The middle part of the tensioning bolt (5) is threadedly connected to the fixing block (4), and one end is rotatably connected to the connecting plate (3).

4. The wind turbine anchor bolt foundation zonal grouting device as described in claim 1, characterized in that: The position adjustment assembly includes a support frame (10), a lifting block (11), and an adjusting bolt (12). The support frame (10) is fixed on the outer template (1), and a sliding groove is provided on the support frame (10). One end face of the lifting block (11) is in contact with the surface of the support frame (10). A set bolt (9) is threadedly connected to the lifting block (11). One end of the set bolt (9) passes through the sliding groove on the support frame (10), and the set bolt (9) is slidably connected to the sliding groove. The adjusting bolt (12) is threadedly connected to the top of the support frame (10), and one end of the adjusting bolt (12) is rotatably connected to the lifting block (11).

5. A construction method for a wind turbine anchor bolt foundation zonal grouting device as described in any one of claims 1 to 4, characterized in that: Includes the following steps: Step 1: Concrete foundation construction: According to the design drawings, tie the steel bars, and during the steel bar tying process, complete the installation and fixing of the lower anchor plate and anchor bolt (8) in the anchor bolt assembly. Then, erect the formwork and pour the concrete. After the concrete solidifies to the design strength, the concrete foundation (20) is obtained. Step 2: Install the zonal grouting mechanism: Install the zonal grouting mechanism onto the lower anchor plate and anchor bolt (8), and connect the zonal grouting mechanism to the pump body (17) at the bottom of the concrete tank (19); Step 3: Install the outer formwork and inner formwork: Install and fix the outer formwork (1) and the demolding assembly onto the concrete foundation (20) using the installation bolts (2), and then install and fix the inner formwork (6) coaxially to the inside of the outer formwork (1) using the installation bolts (2); Step 4: Install the upper anchor plate: Install the clamping assembly onto the upper anchor plate (7), then pass the upper anchor plate (7) onto the anchor bolt (8). Use the clamping assembly to adjust the position of the upper anchor plate (7) in the horizontal direction and level the upper anchor plate (7). Step 5, Grouting: Pour concrete grout into the gap between the outer formwork (1) and the inner formwork (6). After the concrete grout has solidified, use the demolding assembly to remove the outer formwork (1) from the concrete, and then remove the inner formwork (6) from the concrete. Step 6, Grouting of the lower anchor plate: Start the pump body (17) and grout the lower anchor plate in sections through the sectional grouting mechanism to end the construction.

6. The construction method of the wind turbine anchor bolt foundation zonal grouting device as described in claim 5, characterized in that: In step four, first rotate the set bolt (9) in the position adjustment assembly to finely adjust the upper anchor plate (7) to the required position in the horizontal direction, and then rotate the adjusting bolt (12) in the position adjustment assembly to level the upper anchor plate (7); In step six, during the grouting process of the lower anchor plate, the grouting ends when the grout discharged from the grout pipe (22) fills the grout pipe without air. After the grouting is completed, grout is filled into the grouting pipe (18) and the grout discharge pipe (22), and the external ports of the grouting pipe (18) and the grout discharge pipe (22) are sealed with waterproof sealant.

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