Offshore wind power split type impeller air butt joint guiding and locking mechanism
By using a ring array alignment guide structure and a self-locking drive mechanism, the problem of guiding and locking split rotors during high-altitude docking at sea has been solved, achieving precise docking and reliable locking at the blade root, thus improving the efficiency and safety of offshore wind power construction.
Patent Information
- Application Number
- CN202512047283.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-06
AI Technical Summary
When existing split-type impellers are docked at high altitudes at sea, there are problems with guidance and alignment, as well as poor locking reliability, which makes the blades susceptible to wind disturbance, displacement, loosening and slippage.
The alignment guide structure and self-locking drive mechanism are distributed in a ring array. Through the coordinated design of the radial extension and retraction of the correction rod and the hook structure, the active and precise guidance and locking of the blade root are achieved. The worm gear transmission is used to ensure the safety and stability of the docking process.
It achieves precise alignment and reliable locking of the blade roots, reduces equipment investment costs, improves the efficiency and safety of high-altitude operations at sea, and shortens the construction cycle.
Smart Images
Figure CN121474059A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wind power equipment installation and connection technology, and in particular to an aerial docking guidance and locking mechanism for a split-type rotor of an offshore wind turbine. Background Technology
[0002] As offshore wind power develops towards deeper waters and larger scale, the capacity of individual wind turbines is constantly increasing, and the blade length is also getting longer. The transportation and installation of traditional integral impellers face severe challenges: the land transport of ultra-long blades is restricted by transportation such as bridges and tunnels, while offshore installation requires ultra-large crane vessels, which are not only expensive to rent, but also subject to the influence of marine environment such as wind, waves, and currents, resulting in a very short effective working window and significantly extending the construction period. To solve the above problems, split impeller technology has emerged, in which the blades and hub are transported separately and assembled at the top of the tower.
[0003] However, the existing split docking technology has significant drawbacks: First, it is difficult to guide and align at high altitudes. When operating at high altitudes at sea, the blades are easily affected by wind disturbances and may shift or swing, making it difficult to accurately align the mounting bolts at the blade root with the mounting holes at the hub. There is a lack of effective active guidance and centering mechanisms. Second, the locking reliability is poor. There is a lack of locking mechanisms, and the blades are prone to loosening or slipping during the docking process.
[0004] Therefore, it is necessary to provide an aerial docking guidance and locking mechanism for split-type offshore wind turbine rotors to solve the above-mentioned technical problems. Summary of the Invention
[0005] The technical problem solved by this invention is to provide a guide and locking mechanism for aerial docking of split-type offshore wind turbine rotors that is accurate in guidance and alignment, reliable in locking, and reusable.
[0006] To solve the above-mentioned technical problems, the present invention provides an offshore wind turbine split-type rotor aerial docking guidance and locking mechanism, including a fixed cylinder fixedly installed in the hub and a fan blade disposed on one side of the hub. A locking ring is fixedly installed in the root of the fan blade. A mounting base is fixedly installed in the fixed cylinder. A cylinder is slidably installed through the mounting base. The cylinder and the axis of the fixed cylinder coincide. An alignment guidance structure is provided on the fixed cylinder. A plurality of hook structures are provided on the alignment guidance mechanism. A self-locking drive mechanism is installed on the fixed cylinder. The self-locking drive mechanism includes a fixed plate, a first rotating shaft, a first gear, a worm gear, and a worm. The fixed plate is fixedly mounted on the mounting base, the first rotating shaft is rotatably mounted on the fixed plate, the first gear and the worm gear are both fixedly sleeved on the first rotating shaft, the worm gear is rotatably mounted on the fixed plate, and the worm gear meshes with the worm gear. A first toothed plate is fixedly mounted on the outer wall of the cylinder, and the first gear meshes with the first toothed plate.
[0007] Preferably, the mounting base has a circular sliding opening, the cylinder passes through the circular sliding opening and is slidably connected to the inner wall of the circular sliding opening, the inner wall of the circular sliding opening has two square through slots, and two limiting slide bars are fixedly installed on the outer wall of the cylinder. Both limiting slide bars pass through the corresponding square through slots and are slidably connected to the inner wall of the corresponding square through slots. Limiting bolts are threadedly installed at the top and bottom of the end of the limiting slide bar near the mounting base, and a rear limiting block is welded to the end of the limiting slide bar away from the mounting base.
[0008] Furthermore, an avoidance groove is provided on the inner wall of the circular sliding opening, and a bearing plate is fixedly installed on the outer wall of the cylinder. The bearing plate passes through the avoidance groove and is movably connected to the inner wall of the avoidance groove. The upper surface of the bearing plate is treated with a frosting process. A clamping screw is threaded on the top of the mounting base. The bottom end of the clamping screw extends into the avoidance groove and is rotatably fitted with a contact block. The bottom of the contact block contacts the bearing plate.
[0009] Preferably, the alignment guide structure includes a driven block, a lead screw, multiple push-pull rods, multiple fixing boxes, multiple top rods, and multiple straightening rods. The driven block is slidably installed inside the cylinder, the lead screw is rotatably installed inside the cylinder, the lead screw passes through the driven block and is threadedly connected to the driven block, the multiple push-pull rods are rotatably installed on the driven block and are rotationally symmetrically distributed, the multiple fixing boxes are fixedly installed on the outer wall of the cylinder and are rotationally symmetrically distributed, the multiple top rods are slidably installed in their respective fixing boxes, the multiple straightening rods are fixedly installed at the ends of the multiple top rods away from the cylinder, and the ends of the multiple push-pull rods away from the driven block are rotatably connected to their respective top rods.
[0010] Furthermore, a plurality of first balls are movably embedded on the correction rod, and the plurality of first balls are arranged at equal intervals.
[0011] Preferably, a plurality of protrusions are integrally formed on the outer wall of the driven block, and a plurality of first elongated sliding openings are provided on the outer wall of the cylinder. The plurality of protrusions are located in the corresponding first elongated sliding openings and are slidably connected to the inner wall of the corresponding first elongated sliding openings. The end of the push-pull rod near the cylinder is rotatably connected to the protrusion.
[0012] Preferably, a second elongated sliding opening is provided on the outer wall of the fixing box near the mounting base, a connecting block is fixedly installed on the top rod, the connecting block passes through the second elongated sliding opening and is slidably connected to the second elongated sliding opening, and the end of the push-pull rod away from the cylinder is rotatably connected to the connecting block.
[0013] Preferably, each of the hook-and-pull structures includes a hexagonal slide rod, a round block, a second ball bearing, a second toothed plate, a tension spring, a locking rod, and a second gear. The hexagonal slide rod is slidably mounted on the straightening rod. The round block is fixedly mounted on the top end of the hexagonal slide rod. The second ball bearing is movably embedded in the round block. The second toothed plate is fixedly mounted on the bottom end of the hexagonal slide rod. The tension spring is sleeved on the hexagonal slide rod. The top end of the tension spring is fixedly connected to the straightening rod, and the bottom end is fixedly connected to the second toothed plate. The locking rod is rotatably mounted on the straightening rod. The second gear is fixedly sleeved on the locking rod and meshes with the second toothed plate. A locking head is provided at the end of the locking rod away from the top rod, and the locking head is integrally formed with the locking rod.
[0014] Preferably, the corrective rod has a circular groove, the circular block is located in the circular groove, and the height of the circular block is the same as that of the circular groove. Preferably, the straightening rod has a hexagonal sliding hole that coincides with the axis of the circular groove, the hexagonal sliding rod passes through the hexagonal sliding hole and is slidably connected to the inner wall of the hexagonal sliding hole.
[0015] Compared with related technologies, the offshore wind turbine split-type rotor aerial docking guidance and locking mechanism provided by the present invention has the following advantages: This invention achieves active and precise guidance of the fan blade root through a ring-array distribution of alignment guidance structures. During the docking process, multiple correction rods synchronously extend and retract radially, and the first ball bearings on their surfaces generate rolling friction with the inner wall of the locking ring. This not only forces the fan blade root to adjust its posture through a uniform radial correction force, automatically coaxially centering it with the fixing cylinder, but also significantly reduces the resistance of circumferential fine-tuning of the fan blade under wind and wave interference, ensuring rapid and precise alignment of the mounting bolts and the mounting holes of the mounting ring. This active guidance mechanism effectively solves the problems of high interference from the receiving environment and low alignment accuracy at high altitudes at sea. This invention integrates the guiding process with the locking action. While the straightening rod guides the blade root for centering, the second ball bearing of the hook structure contacts the inner wall of the locking ring, triggering the locking rod to automatically rotate 180°, achieving mechanical locking. This design seamlessly connects the end point of guidance with the start point of locking, ensuring that locking occurs immediately upon guidance, resulting in a smooth and efficient operation. Combined with the worm gear transmission of the self-locking drive mechanism, it completely eliminates the risk of blade slippage due to wind or gravity disturbances during docking, greatly improving the safety of high-altitude operations. The core components of this invention (cylinder, alignment guide structure, hook structure, and self-locking drive mechanism) are all detachable and connectable. After guiding, docking, and locking a single fan blade, it can be quickly disassembled and transferred to the next fixed cylinder for reuse. This not only reduces equipment investment costs but also significantly improves the efficiency of guidance and docking, and shortens the time for high-altitude operations at sea. Attached Figure Description
[0016] Figure 1 A schematic diagram of the aerial docking guidance and locking mechanism for the split-type offshore wind turbine rotor provided by the present invention; Figure 2 for Figure 1 The diagram shown illustrates the installation of the mounting base within the fixed cylinder. Figure 3 for Figure 2 A schematic diagram of the components mounted on the mounting base shown; Figure 4 for Figure 3 The diagram shows the structure of the cylinder. Figure 5 for Figure 3 The diagram shows the structure of the self-locking drive mechanism. Figure 6 for Figure 3 The diagram shows the connection between the push-pull rod and the driven block. Figure 7 for Figure 3 A schematic diagram of the components mounted on the mounting box shown; Figure 8 for Figure 7 The diagram shows the structure of the correction rod. Figure 9 for Figure 7 The diagram shows the structure of the hook-and-pull structure. Figure 10 for Figure 3 The diagram shows the structure of the clamping screw; Figure 11 for Figure 3 The diagram shows the positions of the straightening rod and locking rod within the locking ring.
[0017] Numbering on the map: 1. Hub; 2. Mounting base; 3. Cylinder; 4. Fixing plate; 5. First rotating shaft; 6. First gear; 7. Worm gear; 8. Worm; 9. First gear plate; 10. Driven block; 11. Lead screw; 12. Push-pull rod; 13. Fixing box; 14. Top rod; 15. Correcting rod; 16. First ball bearing; 17. Hexagonal slide bar; 18. Circular block; 19. Second ball bearing; 20. Second gear plate; 21. Tension spring; 22. Locking rod; 23. Lock head; 24. Second gear; 25. Clamping screw; 26. Abutting block; 27. Abutting plate; 100. Fixing cylinder; 110. Mounting ring; 200. Fan blade; 210. Locking ring; 1501. Circular groove. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0019] Please refer to the following: Figures 1-11 A split-type offshore wind turbine rotor aerial docking guidance and locking mechanism includes: a fixed cylinder 100 fixedly installed inside a hub 1 and a fan blade 200 disposed on one side of the hub 1. A locking ring 210 is fixedly installed at the root of the fan blade 200. The locking ring 210 is a ring-shaped rigid structure and is the core force-bearing component for docking the fan blade 200 with the fixed cylinder 100. It is used to receive the traction force of the hook structure and the correction force of the alignment guidance structure. Its inner wall is precision machined to ensure contact accuracy during docking. An installation ring 110 for installing the fan blade 200 is rotatably installed inside the fixed cylinder 100. The installation ring 110 has multiple installation holes arranged in a ring array, corresponding one-to-one with the installation bolts for docking and fixing at the root of the fan blade 200. An installation seat is fixedly installed inside the fixed cylinder 100. 2. Mounting base 2 is a plate-shaped load-bearing structure used to provide a stable mounting reference for cylinder 3 and self-locking drive mechanism. Cylinder 3 is slidably mounted through and on mounting base 2. Cylinder 3 is a hollow columnar structure and serves as the mounting carrier for alignment guide structure and hook structure. Its axis coincides with the axis of fixed cylinder 100, providing a reference axis for docking process. At the same time, the extension and retraction of functional components are realized through axial sliding. The fixed cylinder 100 is provided with alignment guide structure for coaxiality correction and circumferential alignment of the root of fan blade 200. Multiple hook structures are provided on the alignment guide mechanism for locking and traction of fan blade 200. The fixed cylinder 100 is equipped with self-locking drive mechanism to provide stable axial driving force to cylinder 3. All structures work together to realize the guiding, docking and locking functions of fan blade 200. The self-locking drive mechanism specifically includes a fixed plate 4, a first rotating shaft 5, a first gear 6, a worm gear 7, and a worm 8. The fixed plate 4 is fixedly mounted on the mounting base 2 by bolts. The first rotating shaft 5 is rotatably mounted on the fixed plate 4 through a shaft seat. The first gear 6 and the worm gear 7 are both fixedly sleeved on the first rotating shaft 5. The worm 8 is rotatably mounted on the fixed plate 4. The worm 8 meshes with the worm gear 7. The worm gear 7 and the worm 8 form a reduction transmission pair. On the one hand, it reduces the transmission speed and increases the output torque to meet the driving force required by the cylinder 3 to pull the fan blade 200. On the other hand, it uses the meshing characteristics of the worm gear to achieve self-locking, preventing the cylinder 3 from moving in the opposite direction due to external forces (such as wind force or the weight of the fan blade) during the docking process, thus ensuring operational safety. A first toothed plate 9 is fixedly installed on the outer wall of the cylinder 3. The first gear 6 meshes with the first toothed plate 9 to convert the rotational motion of the first rotating shaft 5 into the axial linear motion of the cylinder 3. Its tooth surface is hardened to improve wear resistance and load-bearing capacity.
[0020] In this embodiment, a circular sliding opening is provided on the mounting base 2, and the cylinder 3 passes through the circular sliding opening and is slidably connected to the inner wall of the circular sliding opening. Two square through slots are provided on the inner wall of the circular sliding opening, and two limiting slide bars are fixedly installed on the outer wall of the cylinder 3. Both limiting slide bars pass through the corresponding square through slots and are slidably connected to the inner wall of the corresponding square through slots. Their function is to restrict the circumferential rotation of the cylinder 3 and ensure that the cylinder 3 can only slide along the axial direction. Limiting bolts are threaded on the top and bottom of the end of the limiting slide bar near the mounting base 2. The limiting bolts are used to limit the maximum sliding stroke of the cylinder 3 and prevent the cylinder 3 from extending excessively. A rear limiting block is welded to the end of the limiting slide bar away from the mounting base 2.
[0021] In this embodiment, an avoidance groove is provided on the inner wall of the circular sliding opening, and a bearing plate 27 is fixedly installed on the outer wall of the cylinder 3. The bearing plate 27 passes through the avoidance groove and is movably connected to the inner wall of the avoidance groove. The upper surface of the bearing plate 27 is treated with a sanding process to increase the friction with the contact block 26 and serve as a force-bearing carrier for the temporary fixation of the cylinder 3. A clamping screw 25 is threaded on the top of the mounting base 2. The bottom end of the clamping screw 25 extends into the avoidance groove and is rotatably fitted with the contact block 26. The bottom of the contact block 26 contacts the bearing plate 27. The pressure of the clamping screw 25 presses the bearing plate 27, thereby achieving temporary fixation of the cylinder 3. This facilitates position locking during the pre-assembly, debugging, or docking of the mechanism and prevents the cylinder 3 from sliding accidentally.
[0022] In this embodiment, the alignment guide structure includes a driven block 10, a lead screw 11, multiple push-pull rods 12, multiple fixing boxes 13, multiple top rods 14, and multiple straightening rods 15. The driven block 10 is slidably installed inside the cylinder 3. Specifically, multiple protrusions are integrally formed on the outer wall of the driven block 10, and multiple first elongated sliding openings are opened on the outer wall of the cylinder 3. The multiple protrusions are all located in the corresponding first elongated sliding openings and are slidably connected to the inner wall of the corresponding first elongated sliding openings. The lead screw 11 is rotatably installed inside the cylinder 3. The lead screw 11 passes through the driven block 10 and is threadedly connected to the driven block 10. A hexagonal block is welded to the end of the lead screw 11 away from the fan blade 200. An internal hexagonal groove is opened on the hexagonal block. The operator drives the lead screw 11 to rotate by using a suitable crank or other tool, which can drive the driven block 10 to move axially. The end of the pull rod 12 near the cylinder 3 is rotatably connected to the protrusion and is distributed in a rotationally symmetrical manner. Multiple fixing boxes 13 are fixedly installed on the outer wall of the cylinder 3 by bolts and are also distributed in a rotationally symmetrical manner. Multiple push rods 14 are slidably installed on the corresponding fixing boxes 13. Correcting rods 15 are fixedly installed on the ends of the multiple push rods 14 away from the cylinder 3. The push rods 14 are used to drive the correcting rods 15 to achieve radial extension and retraction. One end of the push rod is connected to the push rod 12 and the other end is fixed to the correcting rod 15. It is a force transmission intermediate. The ends of the multiple push rods 12 away from the driven block 10 are rotatably connected to the corresponding push rods 14. The push rods 12 are rigid connecting rod structures used to convert the axial force of the driven block 10 into the radial force of the push rods 14. Both ends of the push rods 12 are rotatably connected to the driven block 10 and the push rods 14 through pins to ensure effective force transmission.
[0023] In this embodiment, a plurality of first balls 16 are movably embedded on the straightening rod 15, and the plurality of first balls 16 are arranged in a straight line with equal spacing. The first balls 16 are wear-resistant steel balls, which are used to convert the sliding friction between the straightening rod 15 and the inner wall of the locking ring 210 into rolling friction. This reduces the resistance when the root of the fan blade 200 is finely adjusted in the circumferential direction, facilitates the alignment of the mounting holes, and avoids wear on the inner wall of the locking ring 210, thus extending the service life of the component.
[0024] In this embodiment, a second elongated sliding opening is provided on the outer wall of the fixed box 13 near the mounting base 2. A connecting block is fixedly installed on the top rod 14. The connecting block passes through the second elongated sliding opening and is slidably connected to the second elongated sliding opening. The end of the push-pull rod 12 away from the cylinder 3 is rotatably connected to the connecting block.
[0025] In this embodiment, each hook-and-pull structure specifically includes a hexagonal slide bar 17, a circular block 18, a second ball bearing 19, a second toothed plate 20, a tension spring 21, a locking rod 22, and a second gear 24. The hexagonal slide bar 17 is slidably mounted on the straightening rod 15, and the circular block 18 is fixedly mounted on the top end of the hexagonal slide bar 17. A circular groove 1501 is provided on the straightening rod 15, and the circular block 18 is located within the circular groove 1501, with the height of the circular block 18 being consistent with that of the circular groove 1501. The rod 15 has a hexagonal sliding hole that coincides with the axis of the circular groove 1501. The hexagonal sliding rod 17 passes through the hexagonal sliding hole and is slidably connected to the inner wall of the hexagonal sliding hole. Its core function is to limit its own circumferential rotation, ensuring that the second toothed plate 20 and the second gear 24 are always precisely meshed, while transmitting axial thrust and tension. The second ball 19 is movably embedded in the round block 18 and is made of wear-resistant steel ball. It is used to reduce the contact friction between the round block 18 and the inner wall of the locking ring 210, so that the locking contact is activated. The movement is smoother and avoids jamming. The second toothed plate 20 is fixedly installed at the bottom end of the hexagonal slide rod 17. The tension spring 21 is sleeved on the hexagonal slide rod 17. The top end of the tension spring 21 is fixedly connected to the straightening rod 15, and the bottom end is fixedly connected to the second toothed plate 20, providing reset power for the hook-pull structure. After docking, the hexagonal slide rod 17 is pulled to reset, thereby driving the locking rod 22 to flip and unlock. The locking rod 22 is rotatably installed on the straightening rod 15, and the second gear 24 is fixedly sleeved on the locking rod 20. On the 2nd, the second gear 24 meshes with the second toothed plate 20 to convert the axial linear motion of the hexagonal slide bar 17 into the rotational motion of the second gear 24. After the locking bar 22 rotates 180°, the round block 18 completely enters the round groove 1501 to achieve locking. The end of the locking bar 22 away from the top bar 14 is provided with a locking head 23, and the locking head 23 is integrally formed with the locking bar 22. After the locking head 23 rotates 180° with the locking bar 22, it is located on the rear side of the locking ring 210.
[0026] In this embodiment: First, assemble the mounting base 2 into the fixing cylinder 100 of the fan blade 200 to be installed. Then, slide the cylinder 3 into the circular sliding port of the mounting base 2. The cylinder 3 is restricted from rotating by the cooperation of the limiting slide bar and the square through groove. Then, rotate the clamping screw 25 to drive the contact block 26 to press down the receiving plate 27. The friction of the frosted surface is used to temporarily fix the cylinder 3 in the designated position. Then, assemble the self-locking drive mechanism, the alignment guide structure and the hook structure in sequence to ensure that the connection of each component is reliable.
[0027] The fan blade 200 is hoisted to one side of the hub 1 using a lifting device, so that the locking ring 210 at the root of the fan blade 200 is aligned with the axis of the fixed cylinder 100. The operator uses a tool to crank the worm gear 8, which drives the meshing worm wheel 7 to rotate, thereby driving the first rotating shaft 5 and the first gear 6 to rotate synchronously. Since the first gear 6 meshes with the first toothed plate 9 on the outer wall of the cylinder 3, the rotation of the first gear 6 is converted into the axial sliding of the cylinder 3, which pushes the cylinder 3 and the alignment guide structure and hook structure mounted on it to extend into the mounting cavity at the root of the fan blade 200 until the lock head 23 on the locking rod 22 completely passes through the locking ring 210.
[0028] By cranking the lead screw 11 with a tool, the lead screw 11 drives the driven block 10 to move axially towards the fan blade 200 via threaded transmission; the driven block 10 maintains smooth sliding through the cooperation of the protrusion and the first long strip slide, while simultaneously driving multiple rotationally symmetrically distributed push-pull rods 12 to swing synchronously; the push-pull rods 12 push the top rod 14 to slide radially outward along the second long strip slide of the fixed box 13 through the connecting block, thereby driving the straightening rod 15 away from the cylinder 3; when the first ball 16 on the straightening rod 15 engages with the locking ring 210 When the inner wall is in contact, the multiple straightening rods 15 are arranged in a ring array, which will apply a uniform radial straightening force to the locking ring 210, forcing the root of the fan blade 200 to adjust its posture so that it is coaxial with the fixed cylinder 100, thus completing automatic centering. The rolling characteristics of the first ball 16 can adapt to the fine adjustment of the fan blade 200, avoiding jamming during the adjustment process. Then the operator adjusts the rotation of the mounting ring 110 inside the fixed cylinder 100 so that the mounting bolt at the root of the fan blade 200 is circumferentially aligned with the mounting hole on the mounting ring 110.
[0029] As the straightening rod 15 approaches the locking ring 210, the second ball bearing 19 on the hook structure first contacts the inner wall of the locking ring 210; under the action of the reverse contact force, the second ball bearing 19 pushes the round block 18 into the circular groove 1501, and at the same time drives the hexagonal slide rod 17 to slide along the hexagonal sliding hole towards the cylinder 3; the hexagonal slide rod 17 drives the second toothed plate 20 at the bottom to move synchronously, and the second toothed plate 20 drives the meshing second gear 24 to rotate, thereby driving the locking rod 22 to flip. During this process, the tension spring 21 is stretched and stores force; when the round block 18 completes its movement... When fully retracted into the circular groove 1501, the locking rod 22 rotates exactly 180°, and the locking head 23 turns to the rear side of the locking ring 210; then the worm gear 8 is rocked in the opposite direction, causing the cylinder 3 to retract towards the hub 1, the locking head 23 hooks onto the locking ring 210 and pulls the fan blade 200 closer to the fixed cylinder 100, the first ball 16 and the second ball 19 roll against the locking ring 210, reducing the traction resistance; the worm gear 8 is continuously rotated until the mounting bolt at the root of the fan blade 200 is fully inserted into the corresponding mounting hole on the mounting ring 110, completing the precise docking.
[0030] After docking, the operator assembles nuts, washers, and other fasteners on the outside of the mounting holes of the mounting ring 110 to securely lock the root of the fan blade 200 to the fixed cylinder 100. Then, the screw 11 is rocked in the opposite direction to retract the driven block 10, and the push-pull rod 12 pulls the top rod 14 and the straightening rod 15 to reset, with the straightening rod 15 moving away from the locking ring 210. At the same time, the tension spring 21 releases its elasticity, pulling the hexagonal slide rod 17 to reset, the second toothed plate 20 drives the second gear 24 to rotate in the opposite direction, the locking rod 22 flips to reset, and the lock head 23 disengages from the locking ring 210. The tightening screw 25 is rotated to disengage the contact block 26 from the abutment plate 27, releasing the temporary fixation of the cylinder 3. Finally, the worm gear 8 is rocked to completely remove the cylinder 3 from the root of the fan blade 200. The bolts are removed to disassemble the core mechanism (cylinder 3, alignment guide structure, hook structure, etc.), and it is lifted off the hub 1 and transferred to the next wind power installation site.
[0031] Because the self-locking drive mechanism uses the meshing transmission of worm gear 7 and worm 8, it has a self-locking characteristic. During the traction docking process, even if the worm 8 is stopped, the cylinder 3 will not move in the opposite direction due to the gravity or wind disturbance of the fan blade 200, ensuring the safety and stability of the docking process.
[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. Offshore wind power split impeller air-to-air interface guide and locking mechanism, including fixedly installed in the hub of the fixed cylinder and set on one side of the hub of the fan, characterized in that the root of the fan is fixedly installed with a locking ring, the fixed cylinder is fixedly installed with a mounting seat, the mounting seat is slidably installed with a cylinder, the cylinder is coaxial with the axis of the fixed cylinder, the fixed cylinder is provided with a positioning guide structure, the positioning guide structure is provided with a plurality of hooking structures, and the fixed cylinder is provided with a self-locking driving mechanism. The self-locking driving mechanism comprises a fixed plate, a first rotating shaft, a first gear, a worm gear and a worm, the fixed plate is fixedly installed on the mounting seat, the first rotating shaft is rotatably installed on the fixed plate, the first gear and the worm gear are fixedly sleeved on the first rotating shaft, the worm is rotatably installed on the fixed plate, the worm is engaged with the worm gear, and the outer wall of the cylinder is fixedly installed with a first toothed plate, and the first gear is engaged with the first toothed plate.
2. The offshore windmill split impeller air docking connection according to claim 1, comprising a guide and locking mechanism, characterized in that, A circular sliding port is formed in the mounting seat, the cylinder penetrates through the circular sliding port and is slidably connected with the inner wall of the circular sliding port, two square through grooves are formed in the inner wall of the circular sliding port, two limiting sliding strips are fixedly installed on the outer wall of the cylinder, the two limiting sliding strips penetrate through the corresponding square through grooves and are slidably connected with the inner walls of the corresponding square through grooves, and the top and bottom of one end of the limiting sliding strip close to the mounting seat are threadedly installed with limiting bolts.
3. The offshore windmill split impeller air-to-air docking guidance and locking mechanism according to claim 2, characterized in that, An avoiding through groove is formed in the inner wall of the circular sliding port, a receiving plate is fixedly installed on the outer wall of the cylinder, the receiving plate penetrates through the avoiding through groove and is movably connected with the inner wall of the avoiding through groove, the upper surface of the receiving plate is treated by sanding process, a clamping screw is threadedly installed on the top of the mounting seat, the bottom end of the clamping screw extends into the avoiding through groove and is rotatably sleeved with a clamping block, and the bottom of the clamping block is in contact with the receiving plate.
4. The offshore windmill split impeller air-to-air docking guidance and locking mechanism, according to claim 1, wherein, The positioning guide structure comprises a driven block, a lead screw, a plurality of push-pull rods, a plurality of fixed boxes, a plurality of jacks and a plurality of correction rods, the driven block is slidably installed in the cylinder, the lead screw is rotatably installed in the cylinder, the lead screw penetrates through the driven block and is threadedly connected with the driven block, a plurality of push-pull rods are rotatably installed on the driven block and are rotationally symmetrically distributed, a plurality of fixed boxes are fixedly installed on the outer wall of the cylinder and are rotationally symmetrically distributed, a plurality of jacks are slidably installed in the corresponding fixed boxes, a plurality of correction rods are fixedly installed at one end of the plurality of jacks away from the cylinder, and one end of the plurality of push-pull rods away from the driven block is rotatably connected with the corresponding jack.
5. The offshore windmill split impeller air-to-air docking guidance and locking mechanism according to claim 4, characterized in that, A plurality of first balls are movably embedded on the correction rod, and the plurality of first balls are arranged at equal intervals.
6. The offshore windmill split impeller air-to-air docking guidance and locking mechanism, according to claim 4, wherein, The outer wall of the driven block is integrally provided with a plurality of protruding blocks, the outer wall of the cylinder is provided with a plurality of first long sliding openings, the plurality of protruding blocks are located in the corresponding first long sliding openings and are in sliding connection with the inner walls of the corresponding first long sliding openings, and one end of the push-pull rod close to the cylinder is in rotary connection with the protruding blocks.
7. The offshore windmill split impeller air-to-air docking guidance and locking mechanism, according to claim 5, wherein, The second long sliding opening is arranged on the outer wall of the side close to the mounting seat, the connecting block is fixedly installed on the ejector rod, the connecting block penetrates through the second long sliding opening and is in sliding connection with the second long sliding opening, and one end of the push-pull rod away from the cylinder is in rotary connection with the connecting block.
8. The offshore windmill split impeller air-to-air docking guidance and locking mechanism, according to claim 5, wherein, The hook-pulling structure comprises a hexagonal sliding rod, a circular block, second rolling balls, a second toothed plate, a tension spring, a lock rod and a second gear, the hexagonal sliding rod is slidably installed on the correction rod, the circular block is fixedly installed at the top end of the hexagonal sliding rod, the second rolling balls are movably embedded in the circular block, the second toothed plate is fixedly installed at the bottom end of the hexagonal sliding rod, the tension spring is sleeved on the hexagonal sliding rod, the top end of the tension spring is fixedly connected with the correction rod, the bottom end is fixedly connected with the second toothed plate, the lock rod is rotatably installed on the correction rod, the second gear is fixedly sleeved on the lock rod, the second gear is engaged with the second toothed plate, and the lock rod is provided with a lock head at the end away from the ejector rod, and the lock head is integrally formed with the lock rod.
9. The offshore windmill split impeller air-to-air docking guidance and locking mechanism according to claim 8, characterized in that, The correction rod is provided with a circular groove, the circular block is located in the circular groove, and the height of the circular block is consistent with the circular groove.
10. The offshore windmill split impeller air-to-air docking guidance and locking mechanism according to claim 9, characterized in that, The correction rod is provided with a hexagonal sliding hole coaxial with the axis of the circular groove, and the hexagonal sliding rod penetrates through the hexagonal sliding hole and is in sliding connection with the inner wall of the hexagonal sliding hole.