A wind turbine unit cast-in-place concrete anti-cracking foundation

Abstract

The utility model relates to the field of wind turbine erection technology, especially a wind turbine cast-in-place concrete crack resistance foundation, its technical scheme includes: the pivot positioning ring, the inner wall fixed mounting of pivot positioning ring has the outer fixed ring frame, the inner wall of outer fixed ring frame is provided with the positioning fence, the inner wall of positioning fence is provided with the inner fixed ring frame, the surface of inner fixed ring frame and positioning fence all are provided with two groups and set up the plug -in hole of upper and lower, another group the lower position hole of outer fixed ring frame is set up. The utility model discloses adjustable deflection through the adjustable control of two -way positioning block and positioning swivel rod, telescopic link and positioning swivel rod, can adapt to the deformation state that the outer fixed ring frame and inner fixed ring frame occur upper and lower surrounding layer, avoid separating the deformation that positioning fence's inside occurs owing to the pressure that two -way positioning block suffered and make positioning fence cause the damage of crack resistance foundation.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine construction technology, and in particular to a cast-in-place concrete crack-resistant foundation for wind turbines. Background Technology

[0002] The cast-in-place concrete foundation of the wind turbine is the core supporting structure of the wind farm. Its design is mainly to meet the load requirements of the wind turbine, namely gravity, wind load and vibration load. At the same time, the wind power generation area is basically set in complex geological conditions. Therefore, the cast-in-place concrete foundation of the wind turbine needs to adapt to complex geological conditions.

[0003] The patent document with publication number CN220058065U discloses a cast-in-place concrete crack-resistant foundation for onshore wind turbines. During use, the structure between the column and the inner fastening ring is strengthened by tensile components, increasing its tensile, crack, and deformation resistance. The deformation resistance of the enclosure is strengthened by deformation resistance components, enabling it to withstand greater forces and resist deformation. Backfill soil can be filled into the enclosure and column. The foundation base plate can strengthen the bottom stability of the enclosure. The tensile and deformation resistance components connect the enclosure and column into one unit.

[0004] When the above devices are in use, although they use box-shaped foundations and backfill soil to weigh down the cavity to improve seismic performance, the outer layer is made of concrete, which is prone to damage or deformation in hot or cold environments. While concrete can be repaired, the box foundation is still easily deformed by the deformation pressure of the outer layer, which in turn causes the inner layer to deform as well. The above devices do not incorporate crack-resistant and deformation-resistant designs, resulting in poor stability of the concrete crack-resistant foundation.

[0005] Therefore, this application proposes a cast-in-place concrete crack-resistant foundation for wind turbine units. Utility Model Content

[0006] The purpose of this invention is to address the problem in the prior art where crack-resistant and deformation-resistant designs are not incorporated, resulting in poor stability of crack-resistant concrete foundations. This invention proposes a cast-in-place crack-resistant concrete foundation for wind turbine units.

[0007] The technical solution of this utility model is as follows: a cast-in-place concrete crack-resistant foundation for a wind turbine, including a central positioning ring, an outer fixing ring frame fixedly installed on the inner wall of the central positioning ring, a positioning enclosure plate provided on the inner wall of the outer fixing ring frame, an inner fixing ring frame provided on the inner wall of the positioning enclosure plate, two sets of insertion holes arranged vertically on the surfaces of the inner fixing ring frame and the positioning enclosure plate, and a lower hole provided below the other set of outer fixing ring frames; The inner fixing ring frame is provided with a tensile frame inside. Two sets of concave positioning frames arranged vertically are fixedly installed on the surface of the tensile frame. A slide rail is provided on the outer side of the concave positioning frame. A positioning rotating rod is slidably installed inside the slide rail. The upper concave positioning frame is hinged to a bidirectional positioning block through the positioning rotating rod. The lower concave positioning frame is hinged to a telescopic rod inside.

[0008] Optionally, auxiliary springs are fixedly installed between the telescopic rod and the positioning rotating rod, and between the positioning rotating rod and the bidirectional positioning block.

[0009] Optionally, the bidirectional positioning block is internally hinged with a separation positioning block, and spring anti-vibration blocks are fixedly installed at both the upper and lower ends of the separation positioning block.

[0010] Optionally, a bolt plate is fixedly installed at the top of the telescopic rod.

[0011] Optionally, both the bidirectional positioning block and the separation positioning block are adapted to the insertion hole, and the separation positioning block is installed inside the insertion hole above the positioning enclosure.

[0012] Optionally, bolt positioning holes are fixedly installed on the top of the four concave positioning frames, and a telescopic rod is fixedly installed on the top of the concave positioning frames.

[0013] Optionally, a circular push plate is fixedly installed on the top of the telescopic rod. The circular push plate has multiple movable holes inside, and a bolt scale rod is rotatably installed inside the circular push plate through the movable holes.

[0014] Optionally, a sealing plate is inserted into the top of the positioning enclosure, and the top of the sealing plate has positioning holes equal in number to the number of movable holes.

[0015] Optionally, a height mark is provided on one side of the bolt scale rod that passes through the positioning hole, and a sealing sleeve is fixedly installed at the connection between the bolt scale rod and the positioning hole.

[0016] Optionally, a bolt positioning bracket is fixedly installed on the outer side of the central positioning ring, and one end of the bolt plate passing through the insertion hole is adapted to the bolt positioning bracket.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects: 1. The tensile frame is connected to the telescopic rod through the bidirectional positioning block to form a whole, which comprehensively strengthens the load-bearing capacity of the positioning plate in the middle position, making it less prone to cracking and enhancing the overall strength of the crack-resistant foundation. At the same time, the adjustable deflection of the bidirectional positioning block and the positioning rotating rod, and the telescopic rod and the positioning rotating rod can adapt to the deformation state of the upper and lower layers of the outer fixed ring frame and the inner fixed ring frame, and avoid the pressure on the bidirectional positioning block from being transferred to the separation positioning block, which would cause internal deformation of the positioning plate and damage to the crack-resistant foundation. 2. Workers can understand the specific installation status of the crack-resistant foundation after assembly by measuring the height difference between the end of the bolt scale rod that passes through the positioning hole and the sealing plate, which is the difference between the number on the top of the bolt scale rod and the number on the sealing plate. If there is a large error in the counting, it can be understood that the crack-resistant foundation is severely deformed and needs to be dealt with urgently to avoid accidents during the later use of the wind turbine. Attached Figure Description

[0018] Figure 1 A structural schematic diagram of the cast-in-place concrete crack-resistant foundation for a wind turbine is provided. Figure 2 A structural schematic diagram of the bolt positioning bracket of this utility model is provided; Figure 3 A structural schematic diagram of the tensile-resistant frame of this utility model is provided; Figure 4 A schematic diagram of the circular push plate of this utility model is provided; Figure 5 Give Figure 4 Enlarged view of region A in the middle; Figure 6 A structural schematic diagram of the bidirectional positioning block of this utility model is provided; Figure 7 A structural schematic diagram of the external fixing ring frame of this utility model is provided.

[0019] Reference numerals: 1. Central positioning ring; 2. Outer fixing ring frame; 3. Bolt positioning frame; 4. Sealing plate; 5. Positioning insertion hole; 6. Circular push plate; 7. Bolt scale rod; 8. Inner fixing ring frame; 9. Positioning enclosure plate; 10. Insertion hole; 11. Concave positioning frame; 12. Bidirectional positioning block; 13. Telescopic rod; 14. Bolt plate; 15. Slide rail; 16. Positioning rotating rod; 17. Separation positioning block; 18. Spring anti-vibration block; 19. Bolt positioning hole; 20. Lower hole; 21. Tensile frame. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-7As shown, the present invention proposes a cast-in-place concrete crack-resistant foundation for wind turbine units, including a central positioning ring 1. An outer fixing ring frame 2 is fixedly installed on the inner wall of the central positioning ring 1. A positioning enclosure plate 9 is provided on the inner wall of the outer fixing ring frame 2. An inner fixing ring frame 8 is provided on the inner wall of the positioning enclosure plate 9. Two sets of insertion holes 10 arranged vertically are opened on the surfaces of the inner fixing ring frame 8 and the positioning enclosure plate 9. A lower hole 20 is opened below the other set of outer fixing ring frames 2. The inner fixing ring 8 has an anti-tensile frame 21 inside. Two sets of concave positioning frames 11, arranged vertically, are fixedly installed on the surface of each anti-tensile frame 21. A slide rail 15 is provided on the outer side of each concave positioning frame 11. A positioning rotating rod 16 is slidably installed inside the slide rail 15. A bidirectional positioning block 12 is hinged to the upper concave positioning frame 11 via the positioning rotating rod 16. A telescopic rod 13 is hinged to the lower concave positioning frame 11. Auxiliary springs are fixedly installed between the telescopic rod 13 and the positioning rotating rod 16, and between the positioning rotating rod 16 and the bidirectional positioning block 12. A separation positioning block 17 is hinged inside the bidirectional positioning block 12. The positioning plate 9 is inserted between the inner fixing ring 8 and the outer fixing ring 2. During the above process... Compared to the prior art, the installation method of this application is as follows: first, the tensile frame 21 is installed; then, the tensile frame 21 slides down along the inner fixing ring frame 8; the telescopic rod 13 retracts inward along the positioning rotating rod 16 under the limitation of the auxiliary spring; then, the outer fixing ring frame 2 and the inner fixing ring frame 8 are installed in the specified position in a hole-to-hole manner; then, the positioning plate 9 is inserted between the inner fixing ring frame 8 and the outer fixing ring frame 2; finally, the inner fixing ring frame 8, the positioning plate 9, and the outer fixing ring frame 2 are pressed down to the specified position in sequence. At this time, the bidirectional positioning block 12 and the concave positioning frame 11 are located in the cavity of the insertion hole 10. Through the elastic force of the auxiliary spring, the bidirectional positioning block 12 and the concave positioning frame 11 are deflected to the horizontal position. Due to the bidirectional positioning... Both block 12 and telescopic rod 13 can slide on slide rail 15 by means of positioning rotating rod 16. Therefore, the separation positioning block 17 will not be obstructed during deflection. Then, bidirectional positioning block 12 and telescopic rod 13 are inserted into the insertion holes 10 opened inside the inner fixing ring frame 8, positioning plate 9 and outer fixing ring frame 2 in sequence, so that the inner fixing ring frame 8, positioning plate 9 and outer fixing ring frame 2 can be smoothly installed in the specified position, which facilitates the disassembly and repair of the box foundation. Moreover, 22 and tensile frame 21 are connected into a whole by bidirectional positioning block 12 and telescopic rod 13, which comprehensively strengthens the load-bearing capacity of positioning plate 9 located in the middle position, making 31 less prone to cracking and strengthening the overall strength of crack-resistant foundation. At the same time, relying on bidirectional positioning block 12, The adjustable deflection of the positioning rod 16 and the telescopic rod 13 with the positioning rod 16 can adapt to the deformation of the upper and lower layers of the outer fixed ring frame 2 and the inner fixed ring frame 8. Since the separation positioning block 17 is inserted into the inside of the positioning plate 9 and the bidirectional positioning block 12 is located inside the inner fixed ring frame 8, when the outer fixed ring frame 2 or the inner fixed ring frame 8 deforms, the bidirectional positioning block 12 is deflected by the pressure of the outer fixed ring frame 2 or the inner fixed ring frame 8, while the spring anti-vibration block 18 can deflect along the bidirectional positioning block 12 and still be normally inserted into the inside of the positioning plate 9, so as to avoid the separation positioning block 17 transmitting the pressure on the bidirectional positioning block 12, causing the inside of the positioning plate 9 to deform and resulting in damage to the crack-resistant foundation.

[0022] Furthermore, a separation positioning block 17 is hinged inside the bidirectional positioning block 12. Spring anti-vibration blocks 18 are fixedly installed at both the upper and lower ends of the separation positioning block 17. Both the bidirectional positioning block 12 and the separation positioning block 17 are adapted to the insertion hole 10. The separation positioning block 17 is installed inside the insertion hole 10 above the positioning enclosure plate 9. When deflection occurs between the bidirectional positioning block 12 and the separation positioning block 17, the separation positioning block 17 relies on the elasticity of the spring anti-vibration block 18 to buffer the vibration that occurs during the deflection process, thereby improving the stability of the separation positioning block 17 when it self-adapts to deflection.

[0023] like Figure 1 and Figure 6 As shown, a bolt plate 14 is fixedly installed on the top of the telescopic rod 13, and a bolt positioning frame 3 is fixedly installed on the outside of the central positioning ring 1. One end of the bolt plate 14 passes through the insertion hole 10 and is adapted to the bolt positioning frame 3. When the telescopic rod 13 extends into the interior of the outer fixing ring frame 2, the telescopic rod 13 drives the positioning rotating rod 16 to move along the slide rail 15 to directly below the threaded hole of the bolt positioning frame 3. Then, the screws are fixed to the ground along the threaded holes of the bolt positioning frame 3 and the bolt plate 14. Thus, the crack-resistant foundation is positioned by fixing the telescopic rod 13 to the ground, reducing its damage and deformation.

[0024] like Figure 1 and Figure 4 As shown, bolt positioning holes 19 are fixedly installed on the top of the four concave positioning frames 11, telescopic rods 13 are fixedly installed on the top of the concave positioning frames 11, and circular push plates 6 are fixedly installed on the top of the telescopic rods 13. Multiple movable holes are opened inside the circular push plates 6, and bolt scale rods 7 are rotatably installed inside the circular push plates 6 through the movable holes. A sealing plate 4 is inserted into the top of the positioning enclosure 9. The top of the sealing plate 4 has positioning insertion holes 5 with the same number as the movable holes. A height mark is set on the side of the bolt scale rod 7 that passes through the positioning insertion hole 5. A sealing sleeve is fixedly installed at the connection between the bolt scale rod 7 and the positioning insertion hole 5.

[0025] In this embodiment, after the tensile frame 21, outer fixing ring frame 2, inner fixing ring frame 8, and positioning plate 9 are installed accordingly, backfill soil can be poured between the tensile frame 21 and the inner fixing ring frame 8 to improve the stability of the crack-resistant foundation. At the same time, the sealing plate 4 is installed on the top of the positioning plate 9 through the positioning insertion hole 5 along the bolt scale rod 7. At this time, the four sets of bolt scale rods 7 are manually rotated. The bolt scale rods 7 rotate along the concave positioning frame 11. Since the concave positioning frame 11 is restricted by the tensile frame 21, it cannot rotate. Then the bolt scale rods 7 rotate along the circular push plate 6 and drive the circular push plate 6 to be restricted by the telescopic rod 13. The position is lowered until the bottom of the bolt scale rod 7 passes through the bolt positioning hole 19 and abuts against the top of the bidirectional positioning block 12 in a horizontal state. The sealing plate 4 forms the crack-resistant foundation into a whole, which can withstand greater force and is not easily deformed. At the same time, the staff can understand the specific installation status of the crack-resistant foundation after assembly by measuring the height difference between the end of the bolt scale rod 7 that passes through the positioning hole 5 and the sealing plate 4, that is, the number on the top of the bolt scale rod 7 minus the number on the sealing plate 4. If there is a large error in the counting, it can be understood that the crack-resistant foundation is severely deformed and needs to be dealt with urgently to avoid accidents in the later use of the wind turbine.

[0026] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A cast-in-place concrete crack-resistant foundation for a wind turbine generator, comprising a central positioning ring (1), characterized in that: The inner wall of the central positioning ring (1) is fixedly installed with an outer fixing ring frame (2), the inner wall of the outer fixing ring frame (2) is provided with a positioning enclosure plate (9), the inner wall of the positioning enclosure plate (9) is provided with an inner fixing ring frame (8), the surfaces of the inner fixing ring frame (8) and the positioning enclosure plate (9) are provided with two sets of insertion holes (10) arranged vertically, and the other set of the outer fixing ring frame (2) is provided with a lower hole (20) below it. The inner fixed ring frame (8) is provided with an anti-tensile frame (21). Two sets of concave positioning frames (11) arranged vertically are fixedly installed on the surface of the anti-tensile frame (21). A slide rail (15) is provided on the outer side of the concave positioning frame (11). A positioning rotating rod (16) is slidably installed inside the slide rail (15). The upper concave positioning frame (11) is hinged to a bidirectional positioning block (12) through the positioning rotating rod (16). The lower concave positioning frame (11) is hinged to a telescopic rod (13).

2. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 1, characterized in that, Auxiliary springs are fixedly installed between the telescopic rod (13) and the positioning rotating rod (16), and between the positioning rotating rod (16) and the bidirectional positioning block (12).

3. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 2, characterized in that, The bidirectional positioning block (12) is internally hinged with a separation positioning block (17), and spring anti-vibration blocks (18) are fixedly installed at both the upper and lower ends of the separation positioning block (17).

4. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 3, characterized in that, A bolt plate (14) is fixedly installed on the top of the telescopic rod (13).

5. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 4, characterized in that, The bidirectional positioning block (12) and the separation positioning block (17) are both adapted to the insertion hole (10). The separation positioning block (17) is installed inside the insertion hole (10) above the positioning enclosure (9).

6. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 1, characterized in that, The top of each of the four concave positioning frames (11) is fixedly equipped with bolt positioning holes (19), and the top of each concave positioning frame (11) is fixedly equipped with a telescopic rod (13).

7. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 6, characterized in that, A circular push plate (6) is fixedly installed on the top of the telescopic rod (13). The circular push plate (6) has multiple movable holes inside. A bolt scale rod (7) is rotatably installed inside the circular push plate (6) through the movable holes.

8. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 7, characterized in that, A sealing plate (4) is inserted into the top of the positioning enclosure (9), and the top of the sealing plate (4) has positioning holes (5) equal to the number of movable holes.

9. The cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 8, characterized in that, The bolt scale rod (7) has a height mark on one side that passes through the positioning hole (5), and a sealing sleeve is fixedly installed at the connection between the bolt scale rod (7) and the positioning hole (5).

10. A cast-in-place concrete crack-resistant foundation for a wind turbine generator according to claim 4, characterized in that, A bolt positioning frame (3) is fixedly installed on the outside of the central positioning ring (1), and one end of the bolt plate (14) passing through the insertion hole (10) is adapted to the bolt positioning frame (3).

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