A new type of concrete wind power tower cylinder connecting device

Abstract

The application relates to the technical field of connecting devices, and discloses a novel concrete wind power tower drum connecting device, which comprises a plurality of tower drum pieces and a conical groove arranged on the lower tower drum pieces, and further comprises: locking parts, the locking parts are provided in plurality, and the locking parts are all arranged on the tower drum pieces; reinforcing parts are arranged on the tower drum pieces; the locking part comprises a rotating assembly, the rotating assembly comprises a placing groove arranged on the tower drum piece, and a fixing block is fixedly connected in the placing groove. Through the arrangement of the locking part, the problems that the existing connecting device is prone to connection loosening, gap enlargement and even bolt falling under the action of long-term wind-induced vibration and alternating fatigue load during use, which leads to the decrease of the tower drum integrity, the aggravation of local stress concentration, the reduction of the structural safety and stability, the frequent maintenance and the substantial shortening of the service life of the tower drum are solved.

Description

Technical Field

[0001] This invention relates to the field of connection device technology, specifically a novel concrete wind turbine tower connection device. Background Technology

[0002] Concrete wind turbine towers are the core support structure of wind turbine generators, mainly used to support the upper equipment such as the nacelle and rotor of the wind turbine, raising the wind turbine to a suitable height to capture more stable and higher-intensity wind energy, thereby improving power generation efficiency and ensuring stable operation of the unit. They are made of high-performance precast concrete, which has greater rigidity, stronger wind vibration resistance, and lower cost compared to traditional steel towers. They are suitable for large-capacity wind turbines and ultra-high hub conditions. Since the height of wind turbine towers generally exceeds 100 meters, production, transportation, and hoisting limitations prevent them from being formed as a whole. They must be made in sections or pieces and then assembled on site. Therefore, reliable connecting devices are required. The connecting devices are responsible for firmly connecting the tower sections into a whole, bearing huge overturning moments, shear forces, and reciprocating wind vibration loads, ensuring the integrity and stability of the structure.

[0003] However, existing connection devices are prone to problems such as loosening of connections, increased gaps, and even bolt detachment during use under long-term wind-induced vibration and alternating fatigue loads. This leads to a decrease in the overall integrity of the tower and an increase in local stress concentration, which not only reduces the structural safety and stability but also requires frequent inspection and maintenance, significantly shortening the service life of the tower. Summary of the Invention

[0004] The purpose of this invention is to provide a novel concrete wind turbine tower connection device. By setting a locking part, it solves the problem that existing connection devices are prone to loosening, increased gaps, and even bolt detachment under long-term wind-induced vibration and alternating fatigue loads during use. This leads to a decrease in the overall integrity of the tower and an increase in local stress concentration, which not only reduces the structural safety and stability but also requires frequent inspection and maintenance, significantly shortening the service life 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 novel concrete wind turbine tower connection device, comprising a plurality of tower sections and conical grooves disposed on the lower sections. It further comprises: a locking part, wherein a plurality of locking parts are disposed and each locking part is mounted on a tower section; a reinforcing part, wherein the reinforcing part is disposed on the tower section; the locking part includes a rotating assembly, wherein the rotating assembly is mounted on the tower section; and an adapter assembly, wherein the adapter assembly is disposed on the rotating assembly; the rotating assembly includes a placement groove formed on the tower section, wherein a fixing block is fixedly connected within the placement groove, and the inner wall of the fixing block... A semicircular block is rotatably connected, and a gear is fixedly connected to the front side of the semicircular block. A rack is provided inside the fixed block, and the bottom of the rack extends outside the fixed block. A pull-back component is provided on the tower plate. The rack meshes with the gear. The pull-back component includes a fixed plate fixedly connected to the bottom of the rack. A connecting rod is fixedly connected to the bottom of the fixed plate. An extension groove is opened on the tower plate. A spring is sleeved on the outer wall of the connecting rod. The top of the spring is fixedly connected to the fixed plate, and the bottom of the spring is fixedly connected to the extension groove. The spring is in its natural state after installation.

[0006] Furthermore, the reinforcing part includes a connecting assembly disposed on the tower plate; and an anti-detachment assembly mounted on the connecting assembly.

[0007] Furthermore, the adapter component includes an adapter block disposed in a placement groove, a second semicircular block disposed within the adapter block, a sliding groove formed on the second semicircular block, a connector disposed on the adapter block, the adapter block being adapted to the fixing block, and the adapter block being fixedly connected to the tower plate located above, the connector including a slider slidably connected to the inner wall of the sliding groove, the slider being fixedly connected to the adapter block, both the sliding groove and the slider being T-shaped and adapted.

[0008] Furthermore, the connecting assembly includes two locking hoops disposed on several tower sections, with bolts disposed on the two locking hoops. An auxiliary component is disposed on the front side of the bolts, and a compression ball is fixedly connected to the rear side of the bolts. The two locking hoops are compatible with each other. The auxiliary component includes an auxiliary block fixedly connected to the front side of the bolts, and the auxiliary block is hexagonal.

[0009] Furthermore, the anti-detachment component includes an elastic plate fixedly connected to the inner wall of the rear locking hoop. The elastic plate has several expansion ports. The compression ball contacts and is adapted to the elastic plate. There are four expansion ports, which are arranged in a circumferential array.

[0010] The present invention has the following beneficial effects: 1. This invention, by setting a locking part, first assembles and fixes the four lower tower sections, then aligns the upper tower section with the lower tower section, using a conical groove for guiding alignment; subsequently, the upper tower section falls, allowing the adapter block to insert into the corresponding placement groove, and pressing the tilted semicircular block one, causing it to rotate around the fixed block, driving the gear to rotate and driving the rack, fixing plate, and connecting rod to move upward, thus stretching the spring; when the adapter block and the fixed block, and semicircular block one and semicircular block two are in contact with each other, the spring retracts and pulls the fixing plate downward, driving semicircular block one to rotate through the rack and gear, pushing semicircular block two to slide along the slide groove with the slider and tilt into the fixed block, forming a limit lock, realizing permanent locking of the upper and lower tower sections, achieving permanent limitation, effectively resisting wind-induced vibration and fatigue load, eliminating the risk of loosening and falling off, and significantly improving the structural safety and service life of wind turbine towers.

[0011] 2. This invention, by setting up a reinforcing part, after the corresponding tower sections are spliced ​​and locked, places a locking hoop on the connection of the tower sections, and then threads the bolts onto the locking hoop. As the bolts are tightened, the extrusion ball gradually presses against the elastic plate, causing the expansion opening on the elastic plate to expand outward and fit tightly against the inner wall of the locking hoop. At the same time, the elastic plate acts in the opposite direction on the extrusion ball, providing a continuous pre-tightening force for the bolts and the locking hoop, thus achieving a connection that prevents loosening and detachment. Relying on the extrusion expansion and reverse tightening to form a double anti-loosening structure, it can effectively counteract the loosening trend caused by wind-induced vibration, avoid bolt loosening and failure, further strengthen the integrity and structural rigidity of the tower connection, and improve the operational reliability of the device.

[0012] 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

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a partial cross-sectional view of the locking part of the present invention; Figure 4 This is a partial cross-sectional view of the rotating assembly of the present invention; Figure 5 This is a partial cross-sectional structural diagram of the reinforcement part of the present invention; Figure 6 For the present invention Figure 2A magnified structural diagram of A in the middle; Figure 7 For the present invention Figure 3 A magnified structural diagram of B in the diagram.

[0015] The attached diagram lists the components represented by each number as follows: In the diagram: 111, tower plate; 112, conical groove; 2, locking part; 21, rotating assembly; 211, placement groove; 212, fixing block; 213, semicircular block one; 214, gear; 215, rack; 216, fixing plate; 217, connecting rod; 218, extension groove; 219, spring; 22, adapter assembly; 221, adapter block; 222, semicircular block two; 223, sliding groove; 224, slider; 3, reinforcing part; 31, connecting assembly; 311, locking clamp; 312, bolt; 313, auxiliary block; 314, extrusion ball; 32, anti-detachment assembly; 321, elastic plate; 322, expansion port. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-7 As shown, the present invention is a novel concrete wind turbine tower connection device, comprising a plurality of tower sections 111 and conical grooves 112 disposed on the plurality of tower sections 111 located below, and further comprising: locking parts 2, wherein a plurality of locking parts 2 are disposed, and the plurality of locking parts 2 are all mounted on the tower sections 111; and reinforcing parts 3, wherein the reinforcing parts 3 are disposed on the tower sections 111. The locking part 2 includes a rotating assembly 21, which is mounted on the tower plate 111; and an adapter assembly 22, which is disposed on the rotating assembly 21. The rotating assembly 21 includes a placement groove 211 formed on the tower plate 111, a fixing block 212 fixedly connected in the placement groove 211, a semi-circular block 213 rotatably connected to the inner wall of the fixing block 212, a gear 214 fixedly connected to the front side of the semi-circular block 213, a rack 215 provided in the fixing block 212, the bottom of the rack 215 extending to the outside of the fixing block 212, a pull-back member provided on the tower plate 111, the rack 215 meshing with the gear 214, the pull-back member including a fixing plate 216 fixedly connected to the bottom of the rack 215, a connecting rod 217 fixedly connected to the bottom of the fixing plate 216, an extension groove 218 formed on the tower plate 111, and a spring 219 sleeved on the outer wall of the connecting rod 217. The top of spring 219 is fixedly connected to the fixing plate 216, and the bottom of spring 219 is fixedly connected to the extension groove 218. After installation, spring 219 is in its natural state. The adapter component 22 includes an adapter block 221 set in the placement groove 211. A semi-circular block 222 is set in the adapter block 221. A sliding groove 223 is opened on the semi-circular block 222. A connector is set on the adapter block 221. The adapter block 221 is adapted to the fixing block 212. The adapter block 221 is fixedly connected to the tower plate 111 located above. The connector includes a slider 224 that is slidably connected to the inner wall of the sliding groove 223. The slider 224 is fixedly connected to the adapter block 221. The sliding groove 223 and the slider 224 are both T-shaped and adapted. By setting the locking part 2, wind-induced vibration and fatigue load can be effectively resisted, eliminating the risk of loose connection and falling off, and significantly improving the safety and service life of the wind turbine tower structure.

[0018] The reinforcing part 3 includes a connecting assembly 31, which is disposed on the tower plate 111; and an anti-detachment assembly 32, which is mounted on the connecting assembly 31. The connecting assembly 31 includes two locking clamps 311 disposed on a plurality of tower plates 111, and bolts 312 are disposed on the two locking clamps 311. An auxiliary component is disposed on the front side of the bolts 312, and a compression ball 314 is fixedly connected to the rear side of the bolts 312. The two locking clamps 311 are compatible with each other. The auxiliary component includes an auxiliary block 31 fixedly connected to the front side of the bolts 312. 3. The auxiliary block 313 is hexagonal. The anti-detachment component 32 includes an elastic plate 321 fixedly connected to the inner wall of the rear locking clamp 311. The elastic plate 321 has several expansion ports 322. The extrusion ball 314 contacts and is adapted to the elastic plate 321. There are four expansion ports 322, which are arranged in a circumferential array. By setting the reinforcement part 3, the loosening tendency caused by wind-induced vibration can be effectively offset, the bolts can be prevented from loosening and failing, the integrity and structural rigidity of the tower connection can be further strengthened, and the reliability of the device operation can be improved.

[0019] In use, first fix the four lower tower plates 111 together, then align the upper tower plate 111 with the lower tower plate 111. During alignment, the conical groove 112 will assist in alignment. Then, it falls downwards, and the moving adapter block 221 will insert into the corresponding placement groove 211. As the moving adapter block 221 moves, it will contact the semi-circular block 213. Since the initial state of the semi-circular block 213 is inclined, it will be squeezed after contacting the semi-circular block 213. As it is squeezed, the semi-circular block 213 will rotate within the fixing block 212. As it rotates, the gear 214 will also move. At this time, the gear 214 will drive the rack 215 to move upwards. When the rack 215 moves, the fixing plate 216, the connecting rod 217, and the spring 219 will also move upwards. When the spring 219 moves upwards, it will... When stretched, the motion adapter 221 and the fixed block 212, as well as the semicircular block 1 213 and the semicircular block 222, will be assembled together. At this time, the spring 219 will pull the fixed plate 216 downward. When the fixed plate 216 moves, the rack 215 will rotate the gear 214. When the gear 214 rotates, the semicircular block 1 213 will move the semicircular block 222 within the adapter 221. While the semicircular block 222 moves, the slider 224 will slide within the groove 223. The continuous movement of the semicircular block 222 will cause it to tilt and slide into the fixed block 212. As the semicircular block 222 tilts, as shown in the figure, it will be restricted within the fixed block 212, and the adapter 221 will not be pulled out. This achieves the effect of permanently locking the two corresponding tower plates 111. After the corresponding tower section 111 is connected, the locking clamp 311 is put on the connection. Then, the bolt 312 is installed on the corresponding locking clamp 311 by thread. As it is tightened, the compression ball 314 will come into contact with the elastic plate 321. After contact, continuous rotation will compress the elastic plate 321. At this time, the expansion port 322 will expand. As it expands, it will come into contact with the inner wall of the locking clamp 311. At this time, the elastic plate 321 will also push the compression ball 314 forward. When pushing, the bolt 312 and the locking clamp 311 will have a certain pre-tightening force, thereby achieving the effect of preventing them from falling off.

[0020] 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 novel concrete wind turbine tower connection device, comprising a plurality of tower sections (111) and conical grooves (112) disposed on the lower plurality of tower sections (111), characterized in that, Also includes: Locking part (2), a plurality of locking parts (2) are provided, and the plurality of locking parts (2) are all installed on the tower plate (111); The reinforcing part (3) is provided on the tower plate (111); The locking part (2) includes a rotating assembly (21) mounted on the tower plate (111); and An adapter component (22) is disposed on the rotating component (21); The rotating assembly (21) includes a placement groove (211) opened on the tower plate (111), a fixing block (212) is fixedly connected in the placement groove (211), a semi-circular block (213) is rotatably connected to the inner wall of the fixing block (212), a gear (214) is fixedly connected to the front side of the semi-circular block (213), a rack (215) is provided on the fixing block (212), the bottom of the rack (215) extends to the outside of the fixing block (212), and a pull-back member is provided on the tower plate (111). Among them, the rack (215) meshes with the gear (214).

2. The novel concrete wind turbine tower connection device according to claim 1, characterized in that, The reinforcing part (3) includes a connecting assembly (31) disposed on the tower plate (111); and Anti-detachment component (32), which is mounted on connection component (31).

3. The novel concrete wind turbine tower connection device according to claim 1, characterized in that, The adapter component (22) includes an adapter block (221) disposed in a placement slot (211), a semi-circular block (222) disposed in the adapter block (221), a sliding groove (223) being provided on the semi-circular block (222), and a connector being provided on the adapter block (221); Among them, the adapter block (221) is adapted to the fixing block (212), and the adapter block (221) is fixedly connected to the tower plate (111) located above.

4. A novel concrete wind turbine tower connection device according to claim 2, characterized in that, The connecting assembly (31) includes two locking clamps (311) disposed on a plurality of tower plates (111), and bolts (312) are disposed on the two locking clamps (311). An auxiliary part is disposed on the front side of the bolts (312), and a compression ball (314) is fixedly connected to the rear side of the bolts (312). Among them, the two locking hoops (311) are compatible.

5. A novel concrete wind turbine tower connection device according to claim 2, characterized in that, The anti-detachment component (32) includes an elastic plate (321) fixedly connected to the inner wall of the rear locking hoop (311), and the elastic plate (321) has a plurality of expansion openings (322). Among them, the extrusion ball (314) is in contact with and adapted to the elastic plate (321), and four expansion ports (322) are provided and distributed in a circular array.

6. A novel concrete wind turbine tower connection device according to claim 1, characterized in that, The pull-back component includes a fixing plate (216) fixedly connected to the bottom of the rack (215), a connecting rod (217) fixedly connected to the bottom of the fixing plate (216), an extension groove (218) is provided on the tower plate (111), a spring (219) is sleeved on the outer wall of the connecting rod (217), the top of the spring (219) is fixedly connected to the fixing plate (216), and the bottom of the spring (219) is fixedly connected to the extension groove (218). The spring (219) is in its natural state after installation.

7. A novel concrete wind turbine tower connection device according to claim 3, characterized in that, The connector includes a slider (224) that is slidably connected to the inner wall of the groove (223), and the slider (224) is fixedly connected to the adapter block (221); The groove (223) and the slider (224) are both T-shaped and adapted to each other.

8. A novel concrete wind turbine tower connection device according to claim 4, characterized in that, The auxiliary component includes an auxiliary block (313) fixedly connected to the front side of the bolt (312). Among them, the auxiliary block (313) is hexagonal.

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