A wind fan blade hoisting device and hoisting method capable of resisting wind and wave

Abstract

The application provides a wind fan blade hoisting device and a hoisting method, which are resistant to wind and waves. The hoisting device comprises a hoisting beam, a supporting leg mechanism, a fastening mechanism and a lifting belt. Hoisting ears at the top of the hoisting beam are connected with a crane of a mounting platform through a steel wire rope. The hoisting beam comprises a longitudinal beam and transverse beams symmetrically arranged on both sides of the longitudinal beam. An adjusting mechanism is arranged below the transverse beams. Each of the transverse beams is provided with the lifting belt, the supporting leg mechanism and the fastening mechanism which are symmetrically arranged. The supporting leg mechanism, the fastening mechanism and the lifting belt are movably connected with the hoisting beam through the adjusting mechanism. The fastening mechanism is matched with the lifting belt to fasten the blade, so that the blade is connected with the hoisting device to form an integral whole. The application has good universality and can be applied to hoisting blades with different sizes. The application is resistant to wind and waves, can prevent damage to the blade during hoisting, and reduces the requirements for the hoisting environment and the hoisting cost.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and more particularly to a wind turbine blade hoisting device resistant to wind and waves. This invention also relates to a method for hoisting wind turbine blades resistant to wind and waves. Background Technology

[0002] In the modular installation of offshore wind turbines, blade hoisting is a crucial step. The blades need to be hoisted using a turbine installation platform, which can be either outrigger-type or bottom-mounted, both fixed to the seabed. The vessels transporting the blades are typically floating transport ships, subject to roll, pitch, and heave movements due to wind, waves, and currents. This results in relative movement between the transport ship and the installation platform.

[0003] Conventional blades are over 100 meters long. During hoisting, slings are typically installed at both the blade root and tip. When the transport ship is moving significantly, the relative movement between the ship and the hoisting equipment makes it difficult to tighten the slings and can easily damage the blade. Therefore, the hoisting environment for retrieving blades from the installation platform's crane is subject to strict requirements, resulting in additional demurrage costs for the entire ship's turbine assembly. Furthermore, after the blade is hoisted from the installation platform, to prevent collisions with the transport ship, the entire blade is often hoisted to the platform deck before the transport tooling is disassembled. After installation, the tooling is then hoisted back to the transport ship. This cumbersome process increases travel time and demurrage costs for the transport ship, reduces hoisting efficiency, and increases overall hoisting costs. Summary of the Invention

[0004] The present invention aims to provide a wind turbine blade hoisting device that is resistant to wind and waves, so as to overcome the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a wind turbine blade hoisting device resistant to wind and waves, comprising a lifting beam, a support leg mechanism, a fastening mechanism, and a sling. The lifting beam has lifting lugs at its four corners, which are connected to a crane on the installation platform via steel wire ropes. The lifting beam is a frame structure, comprising longitudinal beams and symmetrically arranged transverse beams on both sides of the longitudinal beams, with the transverse beams fixedly connected to the longitudinal beams. An adjustment mechanism is provided below each transverse beam, and a sling and symmetrically arranged support leg mechanism and fastening mechanism are provided below each transverse beam. The support leg mechanism, fastening mechanism, and sling are all movably connected to the lifting beam through the adjustment mechanism. The fastening mechanism includes a fastening cylinder and a hand-operated hoist. One end of the fastening cylinder is hinged to the transverse beam, and the other end has a fastening plate. The fastening plate cooperates with the sling to fasten the blade. A hand-operated hoist is also connected to the cylinder body of the fastening cylinder and hinged thereto. The other end of the hand-operated hoist is hinged to the transverse beam, and the fastening cylinders located below the same transverse beam are inclined and opposite to each other.

[0006] Furthermore, in the aforementioned wind turbine blade hoisting device for resisting wind and waves, the adjustment mechanism includes a lifting lug plate fixed below the crossbeam, and the lifting lug plate has two sets of symmetrically arranged rows of holes on both sides, the rows of holes including multiple arrayed mounting holes.

[0007] Furthermore, in the aforementioned wind turbine blade hoisting device designed to withstand wind and waves, one end of the sling is a fixed end connected to the mounting hole via a pin, and the other end is a movable end connected to the mounting hole via an automatic unhooking mechanism. The automatically retractable pin...

[0008] Furthermore, in the aforementioned wind turbine blade hoisting device for resisting wind and waves, the outrigger mechanism includes an outrigger, a diagonal brace, and a lifting cylinder. The diagonal brace is located on the outside of the outrigger and is detachably connected to the outrigger. The upper end of the outrigger and the upper end of the diagonal brace are both inserted into the outside of the lifting lug plate and connected to the mounting hole. The lower end of the outrigger is connected to the lifting cylinder, and the bottom of the lifting cylinder is provided with a foot.

[0009] Furthermore, in the aforementioned wind turbine blade hoisting device for resisting wind and waves, a hinged seat is fitted on the outer side of the support leg, one end of the diagonal brace is hinged to the hinged seat, and the other end is hinged to the mounting hole.

[0010] Furthermore, in the aforementioned wind turbine blade hoisting device for resisting wind and waves, the inner side of the support leg is provided with an elastic anti-collision plate arranged along the length of the support leg, specifically an anti-collision rubber plate, and the anti-collision plate is connected to the support leg through a flange plate.

[0011] Furthermore, in the aforementioned wind turbine blade hoisting device for resisting wind and waves, the support leg mechanisms located on both sides of the longitudinal beam are connected by a connecting frame. The connecting frame includes a connecting beam and a reinforcing beam. The connecting beam is a truss structure arranged parallel to the longitudinal beam, and the reinforcing beam is located on both sides below the connecting beam.

[0012] This invention also provides a method for hoisting wind turbine blades resistant to wind and waves, comprising the following steps:

[0013] S1. Select the appropriate outrigger length and lifting cylinder stroke according to the blade height, adjust the outrigger spacing according to the blade width, and check the load-bearing capacity of each structure and the size of each cylinder according to the weight of the blade.

[0014] S2. The blades are secured to the transport ship using transport fixtures and then transported to the wind farm by the transport ship.

[0015] S3. The crane on the installation platform lifts the lifting device onto the transport ship, places it above the blade, and loosens the wire rope after it is in place; then the outrigger mechanism is fixed to the transport ship.

[0016] S4. Install the slings. Activate the automatic unhooking mechanism of the movable end of the slings on the two crossbeams, and install the movable end of the slings around the bottom of the blades onto the crossbeams.

[0017] S5. Adjust the angle of the fastening cylinder, and then start the fastening cylinder. The fastening cylinder extends the pre-tightening vane.

[0018] S6. The lifting cylinder starts to extend, raises the lifting beam, tensions the slings, and positions the blades in conjunction with the fastening cylinder. Then, the transport fixture for the blades is disassembled.

[0019] S7. Install the blade bolts or other accessories at the blade root end according to the blade installation requirements, then disconnect the support leg mechanism from the transport ship, lift the blade and hoist it onto the wind turbine hub to complete the alignment of the blade and the hub.

[0020] S8. The fastening cylinder retracts, the automatic unhooking mechanism opens, the sling automatically falls off, and the connection between the lifting device and the blade is released.

[0021] S9. The platform crane will lift the lifting device onto the transport ship to install the next blade.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. Adaptable to rough seas: When the transport ship experiences large rolls, pitches, heaves, and swells due to the environment, the lifting device is integrated with the hull and there is no relative movement. Furthermore, the blades are integrated with the lifting device through the slings and fastening mechanism. The rough seas do not affect the tightening of the slings or the lifting of the blades during the lifting process, and the blades are not damaged. This reduces the requirements for the lifting environment, as well as the difficulty and cost of lifting.

[0024] 2. The blades can be transported and disassembled on the transport ship, and can be directly hoisted to the wind turbine hub without the need for an installation platform. Furthermore, there is no need to transfer the blades, which improves hoisting efficiency and reduces hoisting costs.

[0025] 3. It has good versatility and can be adapted to the hoisting of blades of different sizes by adjusting the mechanism. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the wind turbine blade hoisting device for wind and wave resistance of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the wind turbine blade hoisting device for wind and wave resistance of the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the wind turbine blade hoisting device of the present invention on a transport ship;

[0030] In the diagram: 101, blade; 102, transport ship; 100, lifting device;

[0031] 1. Lifting beam; 11. Horizontal beam; 12. Longitudinal beam; 2. Outrigger mechanism; 21. Outrigger; 22. Diagonal brace; 23. Lifting cylinder; 24. Foot seat; 25. Hinge seat; 26. Anti-collision plate; 3. Fastening mechanism; 31. Fastening cylinder; 32. Hand chain hoist; 33. Fastening plate; 4. Lifting strap; 5. Lifting lug; 6. Wire rope; 7. Lifting lug plate; 71. Mounting hole; 8. Automatic unhooking mechanism; 9. Connecting frame; 91. Connecting beam; 92. Reinforcing beam. Detailed Implementation

[0032] 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.

[0033] Example 1

[0034] like Figure 1-3As shown, a wind turbine blade hoisting device 100 resistant to wind and waves includes a lifting beam 1, a support leg mechanism 2, a fastening mechanism 3, and lifting straps 4. The lifting beam 1 has lifting lugs 5 at its four corners, which are connected to a crane on the installation platform via steel wire ropes 6. The lifting beam 1 is a frame structure, including longitudinal beams 12 and symmetrically arranged transverse beams 11 on both sides of the longitudinal beams 12. The transverse beams 11 are fixedly connected to the longitudinal beams 12. An adjustment mechanism is provided below each transverse beam 11. Each transverse beam 11 has a lifting strap 4 and symmetrically arranged support leg mechanisms 2 and fastening mechanisms 3 below it. The support leg mechanisms 2, fastening mechanisms 3, and lifting straps 4 are all movably connected to the lifting beam 1 via the adjustment mechanism. This device is suitable for hoisting blades of different sizes, offering good flexibility and versatility. The fastening mechanism 3 includes a fastening cylinder 31 and a hand-operated hoist 32. One end of the fastening cylinder 31 is hinged to the crossbeam 11, and the other end is provided with a fastening plate 33. The fastening surface of the fastening plate 33 can be provided with an elastic buffer layer to avoid damage to the blade 101 during fastening. The fastening plate 33 cooperates with the sling 4 to fasten the blade 101. The hand-operated hoist 32 is also connected to the cylinder body of the fastening cylinder 31 and is hinged thereto. The hand-operated hoist 32 can also be replaced with a telescopic rod. The other end of the hand-operated hoist 32 is hinged to the crossbeam 11, and the fastening cylinders 31 located below the same crossbeam 11 are inclined and opposite each other. The fastening angle of the fastening cylinder 31 can be adjusted by adjusting the stroke of the hand-operated hoist 32, thereby adapting to the fastening of different blades 101. In use, the crane lifts the lifting device onto the transport vessel 102. The outrigger mechanism 2 can be fixed to the transport vessel 102 with ground anchors, so that there is no relative movement between the lifting device and the transport vessel 102. The lateral, longitudinal, heave, and swaying movements of the transport vessel 102 with the wind, waves, and currents will not affect the connection between the blade and the lifting device. The blade 101 is fastened to the sling 4 and the fastening mechanism 3. The disassembly of the transport tooling is completed on the transport vessel 102. The blade is directly lifted to the wind turbine hub without the need for an installation platform and without the need for blade unloading, which improves the lifting efficiency and reduces the lifting cost.

[0035] Example 2

[0036] Based on the structure of Embodiment 1, such as Figure 1-2 As shown, the adjustment mechanism includes a lug plate 7 fixed below the crossbeam 11. The lug plate 7 has two sets of symmetrically arranged holes on both sides, each set including multiple arrayed mounting holes 71. This adjustment mechanism has a simple structure and good versatility.

[0037] The sling 4 has a fixed end connected to the mounting hole 71 via a pin, and a movable end connected to the mounting hole 71 via an automatic release mechanism 8. The automatic release mechanism 8 can be an automatically retractable pin, thereby automatically controlling the release of the movable end of the sling 4 without manual operation, making it convenient and quick.

[0038] like Figure 1-2As shown, the outrigger mechanism 2 includes outriggers 21, diagonal braces 22, and lifting cylinders 23. The diagonal braces 22 are located on the outside of the outriggers 21 and are detachably connected to them. The diagonal braces 22 provide strength to the outriggers 21. The upper ends of both the outriggers 21 and the diagonal braces 22 are inserted into the outside of the lifting lugs 7 and connected to the mounting holes 71, facilitating easy assembly and disassembly and adjustment. The distance between the two outriggers 21 can be adjusted to accommodate blades 101 of different widths. Furthermore, the lower end of the outriggers 21 is connected to the lifting cylinder 23, which has a base 24 at its bottom. In use, the base 24 is fixed to the transport vessel 104, and the lifting cylinder 23 extends, raising the entire lifting beam. The slings 4 automatically tighten under the weight of the blades 101, which is simple, convenient, and does not damage the blades. It should be noted that different lengths of outriggers 21 can be selected according to the height of the blades 101, either by directly replacing outriggers of different lengths or by using segmented telescopic outriggers.

[0039] In the above structure, such as Figure 1 As shown, a hinge seat 25 is fitted on the outer side of the support leg 21. One end of the diagonal brace 22 is hinged to the hinge seat 25, and the other end is hinged to the mounting hole 71. This hinge seat 25 facilitates the replacement and disassembly of the diagonal brace 22 when replacing support legs 21 of different lengths. Furthermore, an elastic anti-collision plate 26, which can be a rubber anti-collision plate, is provided on the inner side of the support leg 21 along its length. The anti-collision plate 26 is connected to the support leg 21 via a flange plate. The anti-collision plate prevents the blade 101 from being impacted.

[0040] In addition, such as Figure 2 As shown, the outrigger mechanisms 2 located on both sides of the longitudinal beam 12 are connected by a connecting frame 9. Specifically, the connecting frame 9 connects the outriggers 21 at both ends of the longitudinal beam. The connecting frame 9 includes a connecting beam 91 and a reinforcing beam 92. The connecting beam 91 is a truss structure arranged parallel to the longitudinal beam 12, and the reinforcing beams 92 are located on both sides below the connecting beam 91. The connecting frame 9 can improve the connection strength between the lifting beam 1 and the outriggers 21, thereby improving the lifting stability.

[0041] This invention also provides a method for hoisting wind turbine blades resistant to wind and waves, comprising the following steps:

[0042] S1. Select the appropriate length of the support leg 21 and the stroke of the lifting cylinder 23 according to the height of the blade 101. Adjust the support leg spacing according to the width of the blade 101. Check the load-bearing capacity of each structure and the size of each cylinder according to the weight of the blade 101.

[0043] S2, Blade 101 is fixed to transport vessel 102 by transport tooling and transported to wind farm by transport vessel 102;

[0044] S3. The crane on the installation platform lifts the lifting device 100 onto the transport ship and places it above the blade 101. After it is in place, the wire rope 6 is loosened. The outrigger mechanism 3 is fixed on the transport ship 102. The bottom foot 24 of the lifting cylinder 23 can be locked by ground anchor.

[0045] S4. Install sling 4, open the automatic unhooking mechanism 8 of the movable end of sling 4 on the two crossbeams 11, and install the movable end of sling 4 around the bottom of blade 101 onto the crossbeam 11.

[0046] S5. Adjust the angle of the fastening cylinder 31, and then start the fastening cylinder 31. The fastening cylinder 31 extends the pre-tightening vane 101.

[0047] S6. The lifting cylinder 23 starts to extend, lifting the lifting beam 1, and the sling 4 is tensioned. It cooperates with the fastening cylinder 31 to position the blade 101, so that the blade 101 is connected to the lifting device 100 as a whole. Then the transport tooling of the blade 101 is disassembled.

[0048] S7. Install the blade bolts or other accessories at the blade root end according to the installation requirements of blade 101; then release the fixed connection between the outrigger mechanism 2 and the transport ship 102, lift the blade 101 and hoist the blade to the wind turbine hub to complete the alignment of the blade and the hub.

[0049] S8. The fastening cylinder 31 retracts, the automatic unhooking mechanism 8 opens, the sling 4 automatically falls off, and the connection between the lifting device 100 and the blade 101 is released.

[0050] S9. The platform crane lifts the lifting device 100 onto the transport ship 102 to install the next blade 101.

[0051] The entire hoisting process is simple and convenient, improving hoisting efficiency and reducing hoisting difficulty and cost.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wind turbine blade hoisting device resistant to wind and waves, characterized in that: The system includes a lifting beam, outrigger mechanism, fastening mechanism, and slings. The lifting beam has lifting lugs at its four corners, which are connected to the crane on the installation platform via wire ropes. The lifting beam is a frame structure, including longitudinal beams and symmetrically arranged transverse beams on both sides of the longitudinal beams, with the transverse beams fixedly connected to the longitudinal beams. An adjustment mechanism is located below each transverse beam. Each transverse beam has a sling and symmetrically arranged outrigger mechanism and fastening mechanism below it, and the outrigger mechanism, fastening mechanism, and slings are all movably connected to the lifting beam through the adjustment mechanism. The fastening mechanism includes a fastening cylinder and a hand-operated hoist. One end of the fastening cylinder is hinged to the transverse beam, and the other end has a fastening plate. The fastening plate cooperates with the slings to fasten the blades. A hand-operated hoist is also connected to the cylinder body of the fastening cylinder and hinged thereto. The other end of the hand-operated hoist is hinged to the transverse beam, and the fastening cylinders located below the same transverse beam are inclined and opposite each other. The adjustment mechanism includes a lug plate fixed below the crossbeam. The lug plate has two sets of symmetrically arranged holes on both sides. The holes include multiple arrayed mounting holes. One end of the sling is a fixed end connected to the mounting hole via a pin, and the other end is a movable end connected to the mounting hole via an automatic unhooking mechanism; The outrigger mechanism can be fixed on the transport ship, so that the lifting device and the transport ship do not move relative to each other. The outrigger mechanism includes outriggers, diagonal braces, and lifting cylinders. The diagonal braces are located on the outside of the outriggers and are detachably connected to the outriggers. The upper ends of the outriggers and the upper ends of the diagonal braces are inserted into the outside of the lifting lugs and connected to the mounting holes. The lower end of the outriggers is connected to the lifting cylinder, and the bottom of the lifting cylinder is provided with a foot.

2. The wind turbine blade hoisting device for resisting wind and waves according to claim 1, characterized in that: The outer side of the support leg is fitted with a hinge seat, one end of the diagonal brace is hinged to the hinge seat, and the other end is hinged to the mounting hole.

3. The wind turbine blade hoisting device according to claim 1, characterized in that: The inner side of the outrigger is provided with an elastic anti-collision plate arranged along the length of the outrigger, and the anti-collision plate is connected to the outrigger through a flange plate.

4. The wind turbine blade hoisting device for resisting wind and waves according to claim 1, characterized in that: The support leg mechanisms located on both sides of the longitudinal beam are connected by a connecting frame. The connecting frame includes a connecting beam and a reinforcing beam. The connecting beam is a truss structure arranged parallel to the longitudinal beam, and the reinforcing beam is located on both sides below the connecting beam.

5. The blade hoisting method of the wind turbine blade hoisting device according to any one of claims 1 to 4, characterized in that, Includes the following steps: S1. Select the appropriate outrigger length and lifting cylinder stroke according to the blade height, adjust the outrigger spacing according to the blade width, and check the load-bearing capacity of each structure and the size of each cylinder according to the weight of the blade. S2. The blades are secured to the transport ship using transport fixtures and then transported to the wind farm by the transport ship. S3. The crane on the installation platform lifts the lifting device onto the transport ship, places it above the blade, and after it is in place, loosens the wire rope and fixes the outrigger mechanism to the transport ship. S4. Install the slings. Activate the automatic unhooking mechanism of the movable end of the slings on the two crossbeams, and install the movable end of the slings around the bottom of the blades onto the crossbeams. S5. Adjust the angle of the fastening cylinder, and then start the fastening cylinder. The fastening cylinder extends the pre-tightening vane. S6. The lifting cylinder starts to extend, raises the lifting beam, tensions the slings, and positions the blades in conjunction with the fastening cylinder. Then, the transport fixture for the blades is disassembled. S7. Install the blade bolts or other accessories at the blade root end according to the blade installation requirements, then disconnect the support leg mechanism from the transport ship, lift the blade and hoist it onto the wind turbine hub to complete the alignment of the blade and the hub. S8. The fastening cylinder retracts, the automatic unhooking mechanism opens, the sling automatically falls off, and the connection between the lifting device and the blade is released. S9. The platform crane will lift the lifting device onto the transport ship to install the next blade.

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