A reinforcing structure for a horizontal joint of a fabricated concrete tower of a wind turbine generator

Abstract

This invention relates to the field of structural reinforcement technology and discloses a reinforcement structure for the horizontal joint of a prefabricated concrete tower for wind turbines. The structure includes a first tower, a second tower mounted on top of the first telescopic tower, and hollow blocks fixedly connected to both the first and second towers. It also includes: several anti-detachment parts arranged in a circular array on two hollow blocks; and several reinforcing parts also arranged in a circular array on two hollow blocks. This invention, by incorporating anti-detachment parts, solves the problem that existing reinforcement structures lack effective anti-detachment limiting mechanisms during use, making it difficult to achieve stable locking of connecting bolts. This makes them vulnerable to the effects of vibration and wind loads during tower operation, leading to loosening of the nuts and causing the horizontal joint reinforcement to loosen and fail, thus affecting the overall structural safety of the tower.

Description

Technical Field

[0001] This invention relates to the field of structural reinforcement technology, specifically a reinforcement structure for the horizontal joint of a prefabricated concrete tower for wind turbine units. Background Technology

[0002] With the rapid advancement of the new energy industry, wind power, as an important component of clean and renewable energy, has seen its industrial scale continuously expand, the single-unit capacity of wind turbines constantly increase, and the tower height also increases accordingly. This places higher demands on the stability and safety of the tower structure. Prefabricated concrete towers, with their advantages of factory prefabrication and on-site assembly, have shown significant advantages in terms of construction cycle, cost control, and structural bearing capacity, and have been widely used in the construction of ultra-high wind turbines. However, the horizontal joints at the splicing points of each tower segment lack continuous steel reinforcement, becoming weak points in the tower structure. The quality of their reinforcement directly affects the operational safety and service life of the entire wind turbine. Therefore, reliable reinforcement structures are needed to reinforce the horizontal joints.

[0003] However, the existing reinforcement structure lacks an effective anti-loosening and limiting mechanism during use, making it difficult to form a stable locking position for the connecting bolts. This is not conducive to resisting the effects of vibration, wind load and other factors during tower operation, which can cause the nuts to loosen due to self-rotation, resulting in the horizontal joint reinforcement loosening and failure, affecting the overall structural safety of the tower. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine. By setting an anti-detachment part, it solves the problem that existing reinforcement structures lack an effective anti-detachment limiting mechanism during use, making it difficult to form a stable locking position for the connecting bolts. This is not conducive to resisting the effects of vibration, wind load and other factors during tower operation, which can cause the nuts to loosen due to self-rotation, resulting in loosening and failure of the horizontal joint reinforcement, and affecting the overall structural safety of the tower.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a reinforcement structure for the horizontal joint of a prefabricated concrete tower for a wind turbine, comprising a first tower, a second tower mounted on the top of the first telescopic tower, and hollow blocks fixedly connected to both the first and second telescopic towers. The structure further includes: several anti-detachment parts arranged in a circular array on two hollow blocks; several reinforcing parts arranged in a circular array on two hollow blocks; and several connecting parts arranged in a circular array. The array is set on two hollow blocks; the anti-detachment part includes an anti-detachment component, which is set on the two hollow blocks; an unlocking component, which is installed on the two hollow blocks; the anti-detachment component includes a rectangular box set below the two hollow blocks, a rectangular slide rod is fixedly connected to the inner wall of the rectangular box, two locking blocks are slidably connected to the outer wall of the rectangular slide rod, a spring damper is fixedly connected between the two locking blocks, and a telescopic protective cover is fixedly connected between the two locking blocks; the telescopic protective cover is set on the outer wall of the spring damper.

[0006] Furthermore, the unlocking component includes a slider slidably connected to the inner wall of the rectangular box. A protrusion is fixedly connected to the left side of the slider, and right-angled trapezoidal blocks are fixedly connected to the right sides of both of the two locking blocks. A cylindrical push rod is fixedly connected to the right side of the protrusion. The right side of the cylindrical push rod slides out of the rectangular box, and an elastic element is provided on the outer wall of the cylindrical push rod. The inclined surface of the inner wall of the protrusion slides in contact with the inclined surface of the outer wall of the two right-angled trapezoidal blocks. The elastic element includes a spring sleeved on the outer wall of the cylindrical push rod. The left side of the spring is fixedly connected to the slider, and the right side of the spring is fixedly connected to the inner wall of the rectangular box.

[0007] Furthermore, the reinforcing part includes an elastic component disposed on the upper hollow block; and a protective component mounted on the upper hollow block. The elastic component includes a top plate disposed above the upper hollow block, with two dampers fixedly connected to the bottom of the top plate. The outer walls of the two dampers are fitted with springs, and the tops of the two springs are fixedly connected to the bottom of the top plate. The dampers are in a fully compressed state, and bolts penetrate the top plate and slide in contact with the inner wall, with the bottom of the bolt head contacting the top of the top plate.

[0008] Furthermore, the protective assembly includes a base plate fixedly connected to the bottom of the two dampers, and two telescopic protective covers are fixedly connected to the top of the base plate. The top of each of the two telescopic protective covers is fixedly connected to the bottom of the top plate. The bottom of the base plate is in contact with the hollow block located on the upper side, and bolts penetrate the base plate and slide in contact with the inner wall.

[0009] Furthermore, the connecting part includes a bolt disposed on two hollow blocks, the outer wall of the bolt slidingly contacting the inner wall of the two hollow blocks, the bolt having an insertion hole, the outer wall of the bolt being threadedly connected to a nut, the outer wall of the bolt being provided with a washer, the inner wall of the washer slidingly contacting the outer wall of the bolt, the washer being provided with a rolling element; the bottom of the washer is in contact with the nut, the outer wall of the rectangular box slidingly contacting the inner wall of the insertion hole, the rolling element including a plurality of grooves formed on the top of the washer, the inner walls of the plurality of grooves being rotatably connected to rolling blocks, and the outer walls of the plurality of rolling blocks being in contact with the hollow block located below.

[0010] The present invention has the following beneficial effects: (1) By setting an anti-detachment part, the present invention can realize the opening and closing of the card block by pressing the unlocking component, which can quickly form a plug-in lock between the rectangular box and the bolt hole, effectively limiting the loosening, slippage and detachment of the bolt at the horizontal joint of the wind turbine tower, resisting the risk of loosening of the connecting parts caused by tower operation vibration and wind load. At the same time, the telescopic protective cover can protect the internal spring damper, avoiding the impact of external dust and water vapor on the elastic locking performance. When disassembling, the limit can also be quickly released by the unlocking component, which is convenient for the later inspection, disassembly and replacement of the structure. (2) By setting up a reinforcing part, the spring generates a continuous axial elastic force during the assembly and locking process, which acts indirectly between the nut and the threaded pair for a long time, so that it always maintains a stable axial preload. This preload can significantly increase the friction torque of the threaded pair contact surface. By increasing the frictional resistance, it can effectively resist the nut from rotating and loosening caused by the vibration of the tower operation. The damper absorbs the vibration impact synchronously, and the telescopic protective cover protects the elastic damping component from outdoor environmental corrosion, and continuously and stably maintains the joint reinforcement and locking effect. (3) By setting up a connecting part, the bolt, nut and washer work together to achieve the overall installation and fixation of the upper and lower hollow blocks and the reinforcing part. The rolling block on the washer can reduce the frictional resistance during locking, making the nut screwing in more smoothly. At the same time, the reserved insertion hole of the bolt can provide a locking position for the anti-detachment part. The connection locking and anti-detachment limiting structure are organically combined to improve the integrity, tightness and assembly convenience of the horizontal joint connection of the wind turbine concrete tower, and ensure the overall structural splicing stability of the tower.

[0011] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the exploded structure of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 This is an exploded structural diagram of the anti-detachment part of the present invention; Figure 4 This is a partial cross-sectional view of the anti-detachment part of the present invention; Figure 5 This is an exploded structural diagram of the connecting part of the present invention; Figure 6 This is a partial cross-sectional view of the reinforcing part of the present invention; Figure 7 For the present invention Figure 2 A magnified structural diagram of A in the diagram.

[0014] The attached diagram lists the components represented by each number as follows: In the diagram: 111, Tower 1; 112, Tower 2; 113, Hollow block; 2, Anti-detachment part; 21, Anti-detachment component; 211, Rectangular box; 212, Rectangular slide bar; 213, Locking block; 214, Spring damper; 215, Telescopic protective cover 1; 22, Unlocking component; 221, Slider; 222, Protrusion; 223, Right-angled trapezoidal block; 224, Cylindrical push rod; 225, Spring 1; 3, Reinforcing part; 31, Elastic component; 311, Top plate; 312, Damper; 313, Spring; 32, Protective component; 321, Base plate; 322, Telescopic protective cover 2; 4, Connecting part; 411, Bolt; 412, Insertion hole; 413, Nut; 414, Washer; 415, Groove; 416, Rolling block. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figures 1-7As shown, the present invention is a reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine, including a first tower 111, a second tower 112 installed on the top of the first telescopic tower 111, and hollow blocks 113 fixedly connected to both the first telescopic tower 111 and the second tower 112. It also includes: anti-detachment parts 2, of which several are arranged in a circumferential array on the two hollow blocks 113; reinforcing parts 3, of which several are arranged in a circumferential array on the two hollow blocks 113; and connecting parts 4, of which several are arranged in a circumferential array on the two hollow blocks 113.

[0017] The anti-detachment component 2 includes an anti-detachment assembly 21, which is disposed on two hollow blocks 113; and an unlocking assembly 22, which is also mounted on the two hollow blocks 113. The anti-detachment assembly 21 includes a rectangular box 211 disposed below the two hollow blocks 113. A rectangular slide rod 212 is fixedly connected to the inner wall of the rectangular box 211. Two locking blocks 213 are slidably connected to the outer wall of the rectangular slide rod 212. A spring damper 214 is fixedly connected between the two locking blocks 213. A telescopic protective cover 215 is fixedly connected between the two locking blocks 213. The telescopic protective cover 215 is fitted onto the outer wall of the spring damper 214. The unlocking assembly 22 includes a slider 221 slidably connected to the inner wall of the rectangular box 211. A protrusion 222 is fixedly connected to the left side of the slider 221. The right sides of the two locking blocks 213 are both fixedly connected to... A right-angled trapezoidal block 223 is attached, and a cylindrical push rod 224 is fixedly connected to the right side of the protrusion 222. The right side of the cylindrical push rod 224 slides out to the outside of the rectangular box 211, and an elastic element is provided on the outer wall of the cylindrical push rod 224. The inclined surface of the inner wall of the protrusion 222 slides in contact with the inclined surface of the outer wall of the two right-angled trapezoidal blocks 223. The elastic element includes a spring 225 sleeved on the outer wall of the cylindrical push rod 224. The left side of the spring 225 is fixedly connected to the slider 221, and the right side of the spring 225 is fixedly connected to the inner wall of the rectangular box 211. By setting the anti-detachment part 2, the rectangular box 211 and the insertion hole 412 of the bolt 411 form a plug-in lock, which can effectively limit the bolt 411 from loosening, slipping and falling out at the horizontal joint of the wind turbine tower, thereby resisting the risk of loosening of the connection caused by tower operation vibration and wind load.

[0018] The reinforcing part 3 includes an elastic component 31, which is disposed on the upper hollow block 113; and a protective component 32, which is mounted on the upper hollow block 113. The elastic component 31 includes a top plate 311 disposed above the upper hollow block 113. Two dampers 312 are fixedly connected to the bottom of the top plate 311. Springs 313 are sleeved on the outer walls of the two dampers 312, and the tops of the two springs 313 are fixedly connected to the bottom of the top plate 311. When the dampers 312 are in a fully compressed state, bolts 411 penetrate the top plate 311 and slide in contact with the inner wall. The bottom of the head of the bolt 411 contacts the top of the top plate 311. 2 includes a base plate 321 fixedly connected to the bottom of two dampers 312. Two telescopic protective covers 322 are fixedly connected to the top of the base plate 321. The top of each telescopic protective cover 322 is fixedly connected to the bottom of the top plate 311. The bottom of the base plate 321 contacts the hollow block 113 located on the upper side. The bolt 411 passes through the base plate 321 and slides in contact with the inner wall. By setting the reinforcing part 3, the spring 313 generates a continuous axial elastic force during the assembly and locking process, which acts between the nut 413 and the threaded pair, so that it always maintains a stable axial preload. This preload can significantly increase the friction torque of the threaded pair contact surface and effectively resist the nut 413 from rotating and loosening due to tower operation vibration.

[0019] The connecting part 4 includes bolts 411 mounted on two hollow blocks 113. The outer wall of the bolts 411 slides in contact with the inner wall of the two hollow blocks 113. The bolts 411 have insertion holes 412. Nuts 413 are threaded onto the outer wall of the bolts 411. A washer 414 is mounted on the outer wall of the bolts 411. The inner wall of the washer 414 slides in contact with the outer wall of the bolts 411. Rolling elements are mounted on the washer 414. The bottom of the washer 414 contacts the nut 413. The rectangular box 211... The outer wall slides in contact with the inner wall of the socket 412. The rolling element includes several grooves 415 formed on the top of the gasket 414. The inner walls of the several grooves 415 are rotatably connected to rolling blocks 416. The outer walls of the several rolling blocks 416 are in contact with the hollow block 113 located on the lower side. By setting the connecting part 4, the upper and lower hollow blocks 113 and the reinforcing part 3 are installed and fixed as a whole. The rolling blocks 416 on the gasket 414 can reduce the frictional resistance during locking, making the nut 413 screw on more smoothly.

[0020] In use, first connect and install tower cylinder 111 and tower cylinder 2 112, ensuring the top of tower cylinder 111 fits snugly against the bottom of tower cylinder 2 112. Align the hollow blocks 113 fixedly connected to tower cylinder 111 and tower cylinder 2 112, and ensure the holes in the two hollow blocks 113 are coaxial. Then, place the reinforcing part 3 on top of the upper hollow block 113 and adjust its position so that the holes in its top plate 311 and bottom plate 321 align with the holes in the upper hollow block 113, while ensuring the lower hollow block 113... The holes are coaxial with the holes of the upper hollow block 113, the top plate 311, and the bottom plate 321. Then, the bolts 411 of the connecting part 4 are sequentially inserted into the aligned top plate 311, the upper hollow block 113, the lower hollow block 113, and the bottom plate 321. Then, the washer 414 is fitted onto the outer wall of the bolt 411, so that the washer 414 is rotatably connected to the rolling block 416 in the several grooves 415 opened on its top and fits against the bottom of the lower hollow block 113. Then, the nut 413 is screwed onto the outer wall of the bolt 411 and initially positioned. During the initial positioning process, bolt 411 will gradually move down, causing top plate 311 to move down synchronously. As top plate 311 moves down, it will squeeze two dampers 312, causing the two dampers 312 to gradually contract. At the same time, spring 313 sleeved on the outer wall of damper 312 is compressed until damper 312 is in a fully compressed state. At this time, the bottom of top plate 311 is in close contact with the top of spring 313, the top of bottom plate 321 is in close contact with the bottom of spring 313, the bottom of bottom plate 321 is in close contact with the top of upper hollow block 113, the top of washer 414 is in close contact with the bottom of lower hollow block 113, the bottom of washer 414 is in close contact with the top of nut 413, and the bottom of bolt head 411 is in close contact with the top of top plate 311. Then, press the cylindrical push rod 224 of the unlocking component 22. After being subjected to force, the cylindrical push rod 224 slides to the left, causing the slider 221 fixedly connected to its left side to move to the left in sync. During the leftward movement of the slider 221, the spring 225 sleeved on the outer wall of the cylindrical push rod 224 is compressed. The spring 225 is in a stretched state. At the same time, the protrusion 222 fixedly connected to the left side of the slider 221 moves to the left in sync with the slider 221. The inclined surface of the inner wall of the protrusion 222 makes sliding contact with the inclined surface of the outer wall of the right-angled trapezoidal block 223 fixedly connected to the right side of the two latches 213. As the protrusion 222 continues to move to the left, the inclined surface of the protrusion 222 will exert a squeezing force on the right-angled trapezoidal block 223, driving the two latches 213 to slide towards each other along the rectangular slide rod 212 fixedly connected to the inner wall of the rectangular box 211. During the sliding of the two latches 213 towards each other, the spring damper fixedly connected between them is compressed. The device 214, and the telescopic protective cover 215 fitted on the outer wall of the spring damper 214 are compressed synchronously until the distance between the two locking blocks 213 is reduced to the size of the insertion hole 412 opened on the adapter bolt 411. Then, the rectangular box 211 of the anti-detachment part 2 is aligned with the insertion hole 412 of the bolt 411 and the rectangular box 211 is inserted into the insertion hole 412. Then, the cylindrical push rod 224 is released, the compressed spring 225 loses its force and retracts to reset, driving the slider 221, the protrusion 222 and the cylindrical push rod 224 to move synchronously to the right until they return to the initial position. At the same time, the compressed spring damper 214 rebounds, generating a reverse force to push the two locking blocks 213 to slide back and forth along the rectangular slide rod 212 until the two locking blocks 213 are reset, realizing the locking and locking, completing the pre-installation and fixing of the anti-detachment part 2 and the connecting part 4, and then completing the installation and fixing of the entire reinforcement structure. When it is necessary to disassemble the reinforcement structure, press the cylindrical push rod 224 in the opposite direction and repeat the pressing action during installation. This will cause the protrusion 222 to squeeze the right-angled trapezoidal block 223, causing the two locking blocks 213 to slide towards each other and disengage from the locking limit of the rectangular box 211. Then, remove the rectangular box 211 from the insertion hole 412 of the bolt 411 to complete the disassembly of the anti-detachment part 2. Next, unscrew the nut 413 on the outer wall of the bolt 411, remove the washer 414 from the outer wall of the bolt 411, and then pull the bolt 411 out from the holes of the top plate 311, the upper hollow block 113, the lower hollow block 113 and the bottom plate 321. Finally, remove the reinforcement part 3 from the top of the upper hollow block 113. By doing so, the connection part 4 and the reinforcement part 3 can be disassembled and maintained.

[0021] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A reinforcement structure for the horizontal joint of a prefabricated concrete tower of a wind turbine, comprising a first tower (111), a second tower (112) installed on the top of the first telescopic tower (111), and hollow blocks (113) fixedly connected to both the first telescopic tower (111) and the second tower (112), characterized in that, Also includes: Anti-detachment part (2), a plurality of anti-detachment parts (2) are provided, and the plurality of anti-detachment parts (2) are arranged in a circumferential array on two hollow blocks (113); A reinforcing part (3) is provided in a plurality of such reinforcing parts (3), and the plurality of such reinforcing parts (3) are arranged in a circular array on two hollow blocks (113); Connecting part (4), a plurality of connecting parts (4) are provided, and the plurality of connecting parts (4) are arranged in a circular array on two hollow blocks (113); The anti-detachment part (2) includes an anti-detachment component (21), which is disposed on two hollow blocks (113); and Unlocking component (22), said unlocking component (22) is mounted on two hollow blocks (113); The anti-detachment component (21) includes a rectangular box (211) disposed below two hollow blocks (113). A rectangular slide rod (212) is fixedly connected to the inner wall of the rectangular box (211). Two locking blocks (213) are slidably connected to the outer wall of the rectangular slide rod (212). A spring damper (214) is fixedly connected between the two locking blocks (213). A telescopic protective cover (215) is fixedly connected between the two locking blocks (213). Among them, the telescopic protective cover (215) is fitted on the outer wall of the spring damper (214).

2. The reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine according to claim 1, characterized in that, The reinforcing part (3) includes an elastic component (31) disposed on the hollow block (113) located on the upper side; and A protective component (32) is mounted on a hollow block (113) located on the upper side.

3. The reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine according to claim 2, characterized in that, The connecting part (4) includes a bolt (411) disposed on two hollow blocks (113). The outer wall of the bolt (411) is in sliding contact with the inner wall of the two hollow blocks (113). The bolt (411) is provided with a socket (412). The outer wall of the bolt (411) is threaded with a nut (413). The outer wall of the bolt (411) is provided with a washer (414). The inner wall of the washer (414) is in sliding contact with the outer wall of the bolt (411). The washer (414) is provided with a rolling element. The bottom of the gasket (414) is in contact with the nut (413), and the outer wall of the rectangular box (211) is in sliding contact with the inner wall of the socket (412).

4. The reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine according to claim 3, characterized in that, The unlocking component (22) includes a slider (221) slidably connected to the inner wall of the rectangular box (211). A protrusion (222) is fixedly connected to the left side of the slider (221). A right-angled trapezoidal block (223) is fixedly connected to the right side of each of the two locking blocks (213). A cylindrical push rod (224) is fixedly connected to the right side of the protrusion (222). The right side of the cylindrical push rod (224) extends slidably to the outside of the rectangular box (211). An elastic element is provided on the outer wall of the cylindrical push rod (224). Among them, the inclined surface of the inner wall of the protrusion (222) slides in contact with the inclined surface of the outer wall of the two right-angled trapezoidal blocks (223).

5. The reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine according to claim 4, characterized in that, The elastic component (31) includes a top plate (311) disposed above the hollow block (113) located on the upper side. Two dampers (312) are fixedly connected to the bottom of the top plate (311). Springs (313) are sleeved on the outer walls of the two dampers (312). The tops of the two springs (313) are fixedly connected to the bottom of the top plate (311). In this case, the damper (312) is in a fully compressed state, the bolt (411) penetrates the top plate (311) and slides in contact with the inner wall, and the bottom of the head of the bolt (411) is in contact with the top of the top plate (311).

6. The reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine according to claim 5, characterized in that, The protective assembly (32) includes a base plate (321) fixedly connected to the bottom of two dampers (312), and two telescopic protective covers (322) fixedly connected to the top of the base plate (321). The top of each of the two telescopic protective covers (322) is fixedly connected to the bottom of the top plate (311). The bottom of the base plate (321) is in contact with the hollow block (113) located on the upper side, and the bolt (411) passes through the base plate (321) and slides in contact with the inner wall.

7. The reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine according to claim 6, characterized in that, The elastic element includes a spring (225) sleeved on the outer wall of the cylindrical push rod (224). The left side of the spring (225) is fixedly connected to the slider (221), and the right side of the spring (225) is fixedly connected to the inner wall of the rectangular box (211).

8. The reinforcement structure for the horizontal joint of the prefabricated concrete tower of a wind turbine according to claim 7, characterized in that, The rolling element includes a plurality of grooves (415) formed on the top of the gasket (414), the inner walls of the plurality of grooves (415) are rotatably connected to rolling blocks (416), and the outer walls of the plurality of rolling blocks (416) are in contact with the hollow block (113) located on the lower side.

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