Method of constructing a vibration damping blade assembly

Abstract

The embodiment of the application provides a construction method of a vibration suppression blade assembly, comprising: a connecting position setting step, setting a connecting position on a blade root section of a blade body; a vibration suppression device mounting step, providing a vibration suppression device, the vibration suppression device comprising a spoiler and a connecting piece connected with the spoiler, setting the spoiler on a blade tip section on the blade body, the blade tip section being oppositely arranged with the blade root section on two ends of the blade body; and a binding step, connecting the connecting piece away from one side of the spoiler with the connecting position. Through the connecting position setting step, the vibration suppression device can be stably connected with the blade body, the vibration suppression device is fixed on the blade body through the blade root section and the blade tip section, it is ensured that the vibration suppression device can rotate with the blade body, the vibration suppression device can be convenient for following the blade body to change the pitch, the connecting piece is prevented from being broken during the pitch change, the installation process of the vibration suppression device is reduced, and the installation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of wind power technology, and in particular to a construction method for a vibration damping blade assembly. Background Technology

[0002] With the continuous development of technology, people have higher requirements for the safety and lifespan of wind turbine generators. Whether it is a wind turbine generator set located on land or onshore, after the blades are hoisted into the tower, the blades have unequal chord lengths from the blade root to the blade tip, and there are twist angles in the cross sections of the blades. This causes the blades to flutter under the action of wind when the wind turbine generator set is stopped. Flutter can cause fatigue damage to the blades and seriously affect their service life.

[0003] Therefore, a new construction method for vibration damping blade assemblies is urgently needed. Summary of the Invention

[0004] This application provides a construction method for a vibration damping blade assembly, which aims to suppress the flutter problem of blades under wind force when the wind turbine is shut down.

[0005] This application provides a construction method for a vibration-damping blade assembly, including: a step of setting a connection position, wherein a connection position is set on the blade root section of the blade body; a step of installing a vibration-damping device, wherein a vibration-damping device is provided, the vibration-damping device including a baffle and a connector connected to the baffle, the baffle being sleeved on the blade tip section of the blade body, the blade tip section and the blade root section being disposed opposite to each other at both ends of the blade body; and a binding step, wherein the side of the connector away from the baffle is connected to the connection position.

[0006] By adopting the above scheme and setting the connection position step, the vibration damping device can be stably connected to the blade body. The vibration damping device is fixed to the blade body through the blade root section and blade tip section, ensuring that the vibration damping device can rotate with the blade body. This facilitates the vibration damping device to follow the blade body's pitch change, prevents the connecting parts from breaking during pitch change, reduces the installation steps of the vibration damping device, and improves installation efficiency.

[0007] Optionally, the step of setting the connection position includes: connecting an anchoring structure to the blade root section of the blade body; providing a binding member having a first free end and a second free end, inserting the first free end into the anchoring structure and then connecting it to the second free end.

[0008] By adopting the above scheme, the ring structure enclosed by the first and second free ends can be flexibly adjusted through the setting of the binding member, which facilitates the fixing of the connector. Secondly, the rigidity of the binding member is lower than that of the anchoring structure, which can provide a certain elastic redundancy, reduce vibration wear that occurs during long-term fixing of the connector, and extend the service life of the connector.

[0009] Optionally, the step of connecting the anchoring structure at the blade root of the blade body includes: placing the blade body horizontally with the windward side facing upward; providing a connecting pipe, connecting the connecting pipe to the windward side and fixing it to form the anchoring structure.

[0010] By adopting the above scheme, the blade body can be placed horizontally, which facilitates the setting of the connection structure on the blade body and the subsequent connection between the blade body and the contour. Secondly, the setting of the connecting tube makes it easy to pass the binding component through it, and the length and shape of the connecting tube can be adjusted according to the specific implementation situation. For example, if an arc-shaped connecting tube is used and the center of the arc-shaped connecting tube is oriented towards the blade tip, the wear of the binding component at the anchoring structure can be significantly reduced and the service life can be extended.

[0011] Optionally, the step of providing a connecting pipe, connecting the connecting pipe to the windward surface and fixing it to form the anchoring structure includes: placing the connecting pipe in a first region of the windward surface, wherein the minimum distance between the first region and the end face of the blade root segment facing away from the blade tip segment is greater than or equal to 5 cm and the maximum distance is less than or equal to 25 cm; covering the connecting pipe with fiberglass cloth and injecting resin into the fiberglass cloth, the connecting pipe and the blade body and curing it to form the anchoring structure.

[0012] By adopting the above scheme, the setting of the first area can allow the connecting pipe to avoid the original fixed structure on the blade root section, such as the rain guard ring, thus preventing mutual interference.

[0013] Optionally, the step of connecting the anchoring structure to the blade root section of the blade body includes: providing two or more anchoring rings; and spacing the two or more anchoring rings and threading them onto the blade root flange of the blade root section.

[0014] By adopting the above solution and setting the anchoring ring, the rigid structure on the original blade body can be directly utilized, reducing the need for additional structure installation, reducing procedures, and improving efficiency.

[0015] Optionally, after the vibration damping device installation step and before the binding step, the construction method further includes: providing an avoidance through hole on the rain shield ring of the blade body, wherein the avoidance through hole and the connection position are arranged opposite to each other in the axial direction of the blade body; and extending the side of the connector away from the turbulence member through the avoidance through hole and toward the blade root section.

[0016] By adopting the above solution and setting the clearance through hole, the connector can pass through the rain guard ring through the clearance through hole, which prevents the connector from being worn due to the connector going around the outside of the rain guard ring.

[0017] Optionally, after the vibration damping device installation step and before the binding step, the construction method further includes: folding back and winding the portion of the connector located in the clearance through hole away from the blade tip section to form a slip knot, the slip knot being able to abut against the surface of the rain shield ring away from the blade tip section, and being able to be pulled open when an external force is applied to the connector along the axial direction.

[0018] By adopting the above scheme, the addition of a swivel knot can provide additional fixing capacity for the connection between the connector and the connection position. When the anchoring structure detaches, the connector can abut against the blade root section side through the swivel knot to prevent the vibration damping device from falling off.

[0019] Optionally, the construction method further includes fixing the portion of the connector located on both sides of the rainproof ring along the axial direction to the blade body.

[0020] By adopting the above solution and fixing the connector to the blade body, the movement of the connector relative to the clearance through hole can be reduced, thus reducing the wear of the connector at the clearance through hole.

[0021] Optionally, the construction method further includes: reinforcing the connector with tape around the threshold lengths on both sides of the rainproof ring, wherein the threshold length on the leaf tip side is at least 20cm and the threshold length on the leaf root side is at least 5cm.

[0022] By adopting the above solution and reinforcing it with winding, the strength of the connector at the through hole can be improved, preventing the connector from wearing and breaking, and extending the service life of the vibration damping device.

[0023] Optionally, the binding step may be followed by a hoisting step, in which the vibration damping blade assembly is hoisted onto the tower.

[0024] Optionally, the hoisting step includes: position adjustment, stopping the vibration damping blade assembly at a preset position; determining the tail blade, based on the positions of the vibration damping blade assembly, the tower, and the main hoisting mechanism, determining that the blade body of the vibration damping blade assembly that is the last to detach from the preset position during the hoisting process is the tail blade; fixing and hoisting the tail blade, connecting the tail blade to the auxiliary hoisting mechanism, and using the main hoisting mechanism and the auxiliary hoisting mechanism to hoist the vibration damping blade assembly, so that the hub of the vibration damping blade assembly is connected to the tower.

[0025] By adopting the above scheme, the main hoisting mechanism and the auxiliary hoisting mechanism can be set up to make the vibration damping blade assembly be raised evenly, preventing the tail blade from being abutted in a preset position alone, which would cause blade damage.

[0026] Optionally, after the hoisting step, the method further includes: a tightening of the connector step, wherein after the blade body completes the pitch change, the connector is disassembled from the connection position, the connector is moved a preset distance to the blade root section, and then the connector is reconnected to the connection position.

[0027] By adopting the above solution and setting the tightening step, the connector that is kept in a loose state can be tightened, preventing the connector from having too much redundancy, which would cause the connector to swing too much on the blade body and cause damage to the connector and the blade body.

[0028] Optionally, the step of fixing and hoisting the tail blade further includes: using the main hoisting mechanism to drive the vibration damping blade assembly away from the preset position along the tower extension direction, and using the auxiliary hoisting mechanism to drive the tail blade away from the preset position along the tower extension direction; when the rising height of the vibration damping blade assembly is greater than the length of the tail blade, the auxiliary hoisting mechanism controls the tail blade to rotate to be parallel to the tower extension direction.

[0029] By adopting the above scheme and setting up the auxiliary hoisting mechanism, the tail blade can be rotated evenly to be parallel to the extension direction of the tower, preventing the tail blade from swinging too much and causing a safety accident.

[0030] Optionally, the step of fixing and hoisting the tail blade further includes: installing the protective plate onto the tail blade, using the fixing strap of the auxiliary hoisting mechanism to surround the protective plate, the connector and the tail blade, and locking the fixing strap.

[0031] By adopting the above solution, the connection between the hoisting mechanism and the tail blade can be strengthened by the setting of the connecting plate, and the tail blade can be protected, reducing the damage to the tail blade caused by the fixing strap.

[0032] Optionally, the protective plate includes a first protective plate and a second protective plate. The step of fixing the tail blade further includes: installing the first protective plate to the leading edge of the tail blade, installing the second protective plate to the trailing edge of the tail blade, driving the connector away from the contact area between the first protective plate and the second protective plate and the tail blade, and then locking the fixing strap.

[0033] By adopting the above solution, the first and second protective plates can effectively cover the main load-bearing parts, the leading and trailing edges, of the fixing belt on the tail blade, ensuring that the tail blade is not damaged. After the tail blade is connected to the protective plate, sufficient area is reserved for the connecting piece to pass through, which facilitates the passage of the connecting piece and prevents the connecting piece from pressing against the tail blade when the fixing belt is locked, causing direct rigid confrontation between the connecting piece and the tail blade, resulting in damage to the tail blade.

[0034] Optionally, the steps of fixing and hoisting the tail blade further include: setting up a guy rope and connecting the guy rope to the protective plate.

[0035] By adopting the above solution, the installation of guy ropes can provide protection during the hoisting process and prevent the protective plates from falling and causing injury.

[0036] Optionally, the step of fixing and hoisting the tail blade further includes: after the tail blade is parallel to the extension direction of the tower, loosening the fixing strap to separate the fixing strap and the protective plate from the tail blade.

[0037] Using the above scheme, after the tail blade is rotated to be parallel to the tower's extension direction, the auxiliary hoisting mechanism completes its work, separating the protective plate from the tail blade. Subsequent hoisting is then completed solely by the main hoisting mechanism.

[0038] Compared with the prior art, the construction method of the vibration damping blade assembly in this application, by setting the connection position step, enables the vibration damping device to be stably connected to the blade body, and the vibration damping device is fixed to the blade body through the blade root section and the blade tip section, ensuring that the vibration damping device can rotate with the blade body, so that the vibration damping device can follow the blade body to change pitch, preventing the connecting parts from breaking when changing pitch, and reducing the installation steps of the vibration damping device, thus improving the installation efficiency. Attached Figure Description

[0039] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0040] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of this application;

[0041] Figure 2 This is a flowchart of a construction method according to an embodiment of this application;

[0042] Figure 3 yes Figure 2 The flowchart of the step one for setting the connection bit in the illustrated embodiment is shown.

[0043] Figure 4 yes Figure 2 The flowchart of the installation steps of the vibration damping device in the embodiment shown is a flowchart of one embodiment;

[0044] Figure 5 This is a flowchart of a construction method according to another embodiment of this application;

[0045] Figure 6 yes Figure 5 The flowchart of the hoisting steps in the embodiment shown is shown in the figure.

[0046] Figure 7This is a schematic diagram of the blade body and vibration damping device according to an embodiment of this application;

[0047] Figure 8 This is a schematic diagram of the blade body and vibration damping device according to another embodiment of this application;

[0048] Figure 9 This is a schematic diagram of the blade body and vibration damping device according to another embodiment of this application;

[0049] Figure 10 This is a schematic diagram of the structure at the leaf root segment according to an embodiment of this application;

[0050] Figure 11 This is a schematic diagram of the structure at the leaf root segment according to another embodiment of this application;

[0051] Figure 12 This is a schematic diagram of the blade body and vibration damping device according to another embodiment of this application.

[0052] In the attached image:

[0053] 100. Vibration damping blade assembly; 200. Tower; 10. Blade body; 101. Blade root section; 102. Blade tip section; 20. Vibration damping device; 201. Turbator; 202. Connector; 30. Connection position; 31. Connecting pipe; 32. Anchor ring; 33. Binding piece; 34. Slip knot; 40. First zone; 50. Rain guard ring; 51. Clearance through hole; 60. Blade root flange; 70. Fixing strap; 80. Guard plate; 801. First guard plate; 802. Second guard plate; 90. Guy rope.

[0054] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0055] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0056] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the construction method for the vibration damping blade assembly of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] To better understand this application, the following will be combined with... Figures 1 to 12 The construction method for the vibration damping blade assembly according to the embodiments of this application will be described in detail.

[0058] like Figure 1 , Figure 2 and Figure 7 As shown in the figure, this application embodiment provides a construction method for a vibration damping blade assembly 100, including:

[0059] S010, Step 30: Set connection position 30 on the blade root section 101 of the blade body 10.

[0060] S020, Installation steps of vibration damping device 20: Vibration damping device 20 is provided. Vibration damping device 20 includes a turbulence-disrupting element 201 and a connecting element 202 connected to the turbulence-disrupting element 201. The turbulence-disrupting element 201 is sleeved onto the blade tip section 102 on the blade body 10. The blade tip section 102 and the blade root section 101 are disposed opposite to each other at both ends of the blade body 10.

[0061] S030, Binding step: Connect the side of the connector 202 away from the spoiler 201 to the connection position 30.

[0062] Optionally, the spoiler 201 is a spoiler structure connected to the blade tip section 102, and can be a spoiler sleeve, spoiler cable, etc. The connector 202 can be one of a connecting rope, connecting cable, connecting belt, or connecting strip. In any case, multiple connecting positions 30 can be provided circumferentially along the blade root section 101.

[0063] By setting the connection position 30, the vibration damping device 20 can be securely connected to the blade body 10. The vibration damping device 20 is fixed to the blade body 10 through the blade root section 101 and the blade tip section 102, ensuring that the vibration damping device 20 can rotate with the blade body 10. This facilitates the vibration damping device 20 to follow the pitch change of the blade body 10, prevents the connecting piece 202 from breaking during pitch change, and reduces the installation steps of the vibration damping device 20, thereby improving installation efficiency.

[0064] like Figure 3 and Figure 10 As shown, in some embodiments, step S010 further includes:

[0065] S011, An anchoring structure is connected to the blade root section 101 of the blade body 10.

[0066] S012. A binding member 33 is provided, which has a first free end and a second free end. The first free end is inserted into the anchoring structure and then connected to the second free end.

[0067] Optionally, the anchoring structure can be ring-shaped, perforated, etc., with the first free end passing through the anchoring structure and then connecting to the second free end, using methods such as knot connection or adhesive bonding. The binding element 33 can be any of the following: binding rope, binding cable, binding strap, or binding strip. The anchoring structure can be multiple, depending on the number of connection positions 30, and can be spaced out on the leeward side, leading edge, and trailing edge.

[0068] With the binding member 33, firstly, the ring structure enclosed by the first free end and the second free end can be flexibly adjusted, which facilitates the fixing of the connector 202. Secondly, the rigidity of the binding member 33 is lower than that of the anchoring structure, which can provide a certain elastic redundancy, reduce vibration wear that occurs during long-term fixing of the connector 202, and extend the service life of the connector 202.

[0069] like Figure 3 and Figure 10 As shown, in some embodiments, step S011 includes: providing a connecting pipe 31, connecting the connecting pipe 31 to the windward side and fixing it to form the anchoring structure.

[0070] Optionally, prior to providing the connecting pipe 31, the blade body 10 may be placed horizontally with the windward side facing upward.

[0071] By placing the blade body 10 horizontally, it is easy to set the connecting structure on the blade body 10 and facilitate the subsequent connection of the blade body 10 with the contour. Secondly, by setting the connecting tube 31, it is easy to pass the binding member 33 through it, and the length and shape of the connecting tube 31 can be adjusted according to the specific implementation situation. For example, an arc-shaped connecting tube 31 can be used, and the center of the arc-shaped connecting tube 31 is oriented towards the blade tip section 102. Preferably, the center of the arc-shaped connecting tube 31 is located within the projection of the connecting member 202 on the blade body 10, which can significantly reduce the wear of the binding member 33 at the anchoring structure and extend its service life.

[0072] like Figure 3 , Figure 8 and Figure 10As shown, in some embodiments, a connecting pipe 31 is provided. The step of connecting and fixing the connecting pipe 31 to the windward side to form an anchoring structure includes: placing the connecting pipe 31 in a first region 40 on the windward side, wherein the minimum distance between the first region 40 and the end face of the blade root segment 101 facing away from the blade tip segment 102 is greater than or equal to 5 cm and the maximum distance is less than or equal to 25 cm. Fiberglass cloth is covered on the connecting pipe 31, and resin is poured into and cured on the fiberglass cloth, the connecting pipe 31, and the blade body 10 to form an anchoring structure.

[0073] The setting of the first area 40 allows the connecting pipe 31 to avoid the original fixed structure on the blade root section 101, such as the rainproof ring 50, to prevent mutual interference. The setting of the fiberglass cloth allows the connecting pipe 31 to be firmly connected to the blade root section 101.

[0074] It is understood that step S011, which includes providing a connecting pipe 31, connecting the connecting pipe 31 to the windward side, and fixing it to form the anchoring structure, is only one optional embodiment.

[0075] like Figure 3 , Figure 9 and Figure 11 As shown, in some other embodiments, step S011 may further include: providing two or more anchoring rings 32; and spacing the two or more anchoring rings 32 and threading them onto the blade root flange 60 of the blade root section 101.

[0076] By setting the anchoring ring 32, the rigid structure on the original blade body 10 can be directly utilized, reducing the installation of additional structures, reducing procedures, and improving efficiency. Furthermore, setting two or more anchoring rings 32 can increase the load-bearing range of the binding member 33 on the anchoring ring 32 and strengthen the connection strength between the anchoring ring 32 and the binding member 33.

[0077] like Figure 4 and Figure 10 As shown, in some embodiments, after step S020 and before step S030, the construction method further includes:

[0078] S021. An avoidance through hole 51 is provided on the rainproof ring 50 of the blade body 10. The avoidance through hole 51 and the connection position 30 are arranged opposite to each other in the axial direction of the blade body 10. The side of the connector 202 away from the turbulence member 201 passes through the avoidance through hole 51 and extends towards the blade root section 101.

[0079] Optionally, multiple clearance holes 51 may be provided corresponding to the anchoring structure.

[0080] By setting the clearance through hole 51, the connector 202 can pass through the rainproof ring 50 through the clearance through hole 51, preventing the connector 202 from being worn due to the connector 202 going around the outside of the rainproof ring 50.

[0081] like Figure 4 and Figure 10 As shown, in some embodiments, after step S020 and before step S030, the construction method further includes: S022. Folding back the portion of the connector 202 located away from the blade tip section 102 in the clearance through hole 51 and forming a slip knot 34. The slip knot 34 can abut against the surface of the rain shield ring 50 away from the blade tip section 102, and the slip knot 34 can be pulled open when an external force is applied to the connector 202 along the axial direction.

[0082] Optionally, the diameter of the swivel 34 on the connector 202 is larger than the diameter of the clearance through hole 51. Not limited to, multiple swivels 34 may be provided on the connector 202. Not limited to, applying an axial force away from the blade tip section 102 to the connector 202 can open the swivel 34.

[0083] By setting the swivel knot 34, additional fixing capacity can be provided for the connection between the connector 202 and the connection position 30. When the anchoring structure is detached, the connector 202 can abut against the blade root section 101 side through the swivel knot 34 to prevent the vibration damping device 20 from falling off.

[0084] In some embodiments, the construction method further includes fixing the portion of the connector 202 located axially on both sides of the rainproof ring 50 to the blade body 10.

[0085] Optionally, the portion of the connector 202 located axially on both sides of the rain shield ring 50 can be bonded to the blade body 10 with fiberglass cloth.

[0086] By fixing the connector 202 to the blade body 10, the movement of the connector 202 relative to the clearance through hole 51 can be reduced, thus reducing the wear of the connector 202 at the clearance through hole 51.

[0087] like Figure 4 As shown, in some embodiments, the construction method further includes: S023, reinforcing the connector 202 with tape wrapped around the threshold length on both sides of the rainproof ring 50, wherein the threshold length on the leaf tip side is at least 20cm and the threshold length on the leaf root section 101 side is at least 5cm.

[0088] Alternatively, the tape may be either electrical tape or fiberglass tape.

[0089] By reinforcing the connection by wrapping, the strength of the connector 202 at the avoidance through hole 51 can be improved, preventing the connector 202 from wearing and breaking, and extending the service life of the vibration damping device 20.

[0090] like Figure 5 and Figure 6As shown, in some embodiments, step S030 is followed by step S040, a hoisting step, in which the vibration damping blade assembly 100 is hoisted onto the tower 200. Step S040 includes:

[0091] S041. Position adjustment: Stop the vibration damping blade assembly 100 at the preset position.

[0092] S042. Determine the tail blade. Based on the positions of the vibration damping blade assembly 100, the tower 200, and the main hoisting mechanism, determine that the last blade body 10 in the vibration damping blade assembly 100 to leave the preset position during the hoisting process is the tail blade.

[0093] S043. Fix and hoist the tail blade, connect the tail blade to the auxiliary hoisting mechanism, and use the main hoisting mechanism and the auxiliary hoisting mechanism to hoist the vibration damping blade assembly 100 so that the hub of the vibration damping blade assembly 100 is connected to the tower 200.

[0094] Optionally, the preset position can be, for example, the position where the blade assembly is placed before the wind turbine generator is hoisted. The main hoisting mechanism and auxiliary hoisting mechanism can be cranes. The main hoisting mechanism can be connected to the hub of the vibration-damping blade assembly 100.

[0095] During hoisting, the vibration damping blade assembly 100 needs to be installed on the tower 200 parallel to the extension direction of the tower 200. Before hoisting, the vibration damping blade assembly 100 is placed horizontally in the preset position. Therefore, the main hoisting mechanism is set on one side of the vibration damping blade assembly 100. When the main hoisting mechanism drives the vibration damping blade assembly 100 to rise, the part closer to the main hoisting mechanism is lifted first, and the part farther away from the main hoisting mechanism is lifted later. As the rising height changes, the vibration damping blade assembly will naturally droop and be parallel to the extension direction of the tower 200. Since the vibration damping blade assembly 100 has a Y-shaped structure, the stress of the tail blade that is lifted last in the preset position is relatively large. By setting up the auxiliary hoisting mechanism, the tail blade can follow the speed of the vibration damping blade assembly 100 and move away from the preset position to rise, preventing the tail blade from being abutted alone in the preset position, which would cause blade damage.

[0096] like Figure 5 As shown, in some embodiments, after step S040, the method further includes: S050, tightening the connector 202 step. After the blade body 10 completes the pitch change, the connector 202 is disassembled from the connection position 30. After the connector 202 is moved a preset distance to the blade root section 101, the connector 202 is connected to the connection position 30.

[0097] The preset distance can be one-tenth to one-third of the length of connector 202, regardless of the location.

[0098] By setting the step of tightening the connector 202, the connector 202, which is maintained in a loose state, can be tightened to prevent the connector 202 from having too much redundancy, which would cause the connector 202 to swing too much on the blade body 10, resulting in damage to the connector 202 and the blade body 10.

[0099] In some embodiments, step S043, fixing and hoisting the tail blade, further includes: driving the vibration damping blade assembly 100 away from the preset position along the extension direction of the tower 200 by the main hoisting mechanism, and driving the tail blade away from the preset position along the extension direction of the tower 200 by the auxiliary hoisting mechanism; when the rising height of the vibration damping blade assembly 100 is greater than the length of the tail blade, the auxiliary hoisting mechanism controls the tail blade to rotate to be parallel to the extension direction of the tower 200.

[0100] The auxiliary hoisting mechanism ensures that the tail blade rotates evenly to be parallel to the extension direction of the tower 200, preventing the tail blade from swinging excessively and causing safety accidents.

[0101] like Figure 12 As shown, in some embodiments, S043, the step of fixing the tail blade and the hoisting step, further includes: installing the guard plate 80 onto the tail blade, using the fixing strap 70 of the auxiliary hoisting mechanism to surround the guard plate, the connector 202 and the tail blade, and locking the fixing strap 70.

[0102] Regardless of location, the protective plate 80 can be made of fiberglass or metal and fits with the leading and trailing edges of the blade body 10 at the wrapping location. Also regardless of location, the side of the protective plate 80 that fits against the blade body 10 can be covered with a flexible material to protect the blade body 10 during the hoisting of the tail blade. Specifically, the flexible material extends beyond the edge of the protective plate 80 along the length of the blade body 10. Specifically, the flexible material can be made of foam or rubber, etc.

[0103] The connection plate helps strengthen the connection between the hoisting mechanism and the tail blade, protects the tail blade, and reduces damage to the tail blade caused by the fixing strap 70 binding.

[0104] In some embodiments, the protective plate 80 includes a first protective plate 801 and a second protective plate 802. The step of fixing the tail blade further includes: installing the first protective plate 801 to the leading edge of the tail blade, installing the second protective plate 802 to the trailing edge of the tail blade, driving the connector 202 away from the contact area between the first protective plate 801 and the second protective plate 802 and the tail blade, and then locking the fixing strap 70.

[0105] By setting the first guard plate 801 and the second guard plate 802, the main load-bearing parts of the fixing belt 70 on the tail blade, the leading edge and the trailing edge, can be effectively covered to ensure that the tail blade is not damaged. After the tail blade is connected to the guard plate 80, a sufficient area can be reserved for the connector 202 to pass through, so that the connector 202 can pass through easily. This prevents the guard plate 80 from pressing the connector 202 against the tail blade when the fixing belt 70 is locked, so that the connector 202 and the tail blade directly and rigidly resist each other, causing damage to the tail blade.

[0106] In some embodiments, step S043, the step of fixing the tail blade and hoisting, further includes: setting up a guy rope 90 and connecting the guy rope 90 to the guard plate 80.

[0107] The guy rope 90 provides protection during hoisting, preventing the guard plate 80 from falling and causing safety injuries or damage to the blades. Secondly, it can also pull the guard plate 80 to facilitate its detachment from the blade body 10 when the guard plate 80 is separated.

[0108] In some embodiments, step S043, fixing the tail blade and hoisting it, further includes: after the tail blade is parallel to the extension direction of the tower 200, loosening the fixing strap 70 to separate the fixing strap 70 and the protective plate 80 from the tail blade.

[0109] After the tail blade rotates to be parallel to the extension direction of the tower 200, the auxiliary hoisting mechanism completes its work, separating the protective plate 80 from the tail blade. Subsequent hoisting is then completed solely by the main hoisting mechanism.

[0110] Compared with the prior art, in the construction method of the vibration damping blade assembly 100 of the present application, the above-mentioned scheme is adopted. By setting the connection position 30 step, the vibration damping device 20 can be stably connected to the blade body 10. The vibration damping device 20 is fixed to the blade body 10 through the blade root section 101 and the blade tip section 102, ensuring that the vibration damping device 20 can rotate with the blade body 10. This facilitates the vibration damping device 20 to follow the blade body 10 pitch change, prevents the connecting piece 202 from breaking during pitch change, and reduces the installation steps of the vibration damping device 20, thereby improving installation efficiency.

[0111] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A construction method for a vibration damping blade assembly (100), characterized in that, include: In the step of setting the connection position (30), the connection position (30) is set on the blade root section (101) of the blade body (10), and the anchoring structure is connected to the blade root section (101) of the blade body (10); a binding member (33) is provided, the binding member (33) having a first free end and a second free end, the first free end is inserted into the anchoring structure and then connected to the second free end; The vibration damping device (20) installation steps include providing a vibration damping device (20), which includes a baffle (201) and a connector (202) connected to the baffle (201). The baffle (201) is disposed on the tip section (102) of the blade body (10), and the tip section (102) and the root section (101) are disposed opposite to each other at both ends of the blade body (10). An avoidance through hole (51) is provided on the rainproof ring (50) of the blade body (10), and the avoidance through hole (51) and the connection position (30) are arranged opposite to each other in the axial direction of the blade body (10). The connector (202) extends through the clearance hole (51) on the side opposite to the spoiler (201) and toward the blade root section (101); In the binding step, the side of the connector (202) facing away from the spoiler (201) is connected to the connection position (30); The step of connecting the anchoring structure to the blade root section (101) of the blade body (10) includes: providing a connecting pipe (31), connecting the connecting pipe (31) to the windward side and fixing it to form the anchoring structure; or, providing two or more anchoring rings (32), and setting two or more anchoring rings (32) at intervals and threadedly connecting them to the blade root flange (60) of the blade root section (101); Alternatively, after the vibration damping device (20) installation step and before the binding step, the construction method further includes: folding back and winding the portion of the connector (202) located away from the blade tip section (102) in the clearance through hole (51) to form a slip knot (34), the slip knot (34) being able to abut against the surface of the rain shield ring (50) away from the blade tip section (102), and the slip knot (34) being able to be pulled open when an external force is applied to the connector (202) along the axial direction.

2. The construction method according to claim 1, characterized in that, The step of providing the connecting pipe (31), connecting the connecting pipe (31) to the windward side and fixing it to form the anchoring structure includes: The connecting tube (31) is placed in the first area (40) of the windward side, and the minimum distance between the first area (40) and the end face of the leaf root segment (101) away from the leaf tip segment (102) is greater than or equal to 5cm and the maximum distance is less than or equal to 25cm. Fiberglass cloth is covered on the connecting pipe (31), and resin is injected and cured on the fiberglass cloth, the connecting pipe (31) and the blade body (10) to form the anchoring structure.

3. The construction method according to claim 1, characterized in that, The construction method also includes: The portion of the connector (202) located on both sides of the rain shield ring (50) in the axial direction is fixed to the blade body (10).

4. The construction method according to claim 3, characterized in that, The construction method further includes: reinforcing the connector (202) with tape wrapped around the threshold length on both sides of the rainproof ring (50), wherein the threshold length on the leaf tip side is at least 20cm and the threshold length on the leaf root segment (101) side is at least 5cm.

5. The construction method according to any one of claims 2-4, characterized in that, The binding step is followed by: The hoisting process involves hoisting the vibration damping blade assembly (100) onto the tower (200).

6. The construction method according to claim 5, characterized in that, The hoisting steps include: Position adjustment, stopping the vibration damping blade assembly (100) at a preset position; The tail blade is determined based on the positions of the vibration damping blade assembly (100), the tower (200) and the main hoisting mechanism. During the hoisting process, the blade body (10) that is the last to leave the preset position in the vibration damping blade assembly (100) is determined to be the tail blade. Fix the tail blade and hoist it. Connect the tail blade to the auxiliary hoisting mechanism. Use the main hoisting mechanism and the auxiliary hoisting mechanism to hoist the vibration damping blade assembly (100) so that the hub of the vibration damping blade assembly (100) is connected to the tower (200).

7. The construction method according to claim 6, characterized in that, Following the hoisting step, the following is also included: In the step of tightening the connector (202), after the blade body (10) completes the pitch change, the connector (202) is disassembled from the connection position (30), the connector (202) is moved a preset distance to the blade root section (101), and then the connector (202) is connected to the connection position (30).

8. The construction method according to claim 6, characterized in that, The step of fixing and hoisting the tail blade also includes: The main hoisting mechanism drives the vibration damping blade assembly (100) away from the preset position along the extension direction of the tower (200), and the auxiliary hoisting mechanism drives the tail blade away from the preset position along the extension direction of the tower (200). When the rising height of the vibration damping blade assembly (100) is greater than the length of the tail blade, the auxiliary hoisting mechanism controls the tail blade to rotate to be parallel to the extension direction of the tower (200).

9. The construction method according to claim 8, characterized in that, The steps of fixing and hoisting the tail blade also include: Install the guard plate (80) onto the tail blade, use the fixing strap (70) of the auxiliary hoisting mechanism to wrap around the guard plate, connector (202) and tail blade, and lock the fixing strap (70).

10. The construction method according to claim 9, characterized in that, The protective plate component (80) includes a first protective plate (801) and a second protective plate (802). The step of fixing the tail blade further includes: Install the first guard plate (801) to the leading edge of the tail blade, install the second guard plate (802) to the trailing edge of the tail blade, drive the connector (202) away from the contact area between the first guard plate (801) and the second guard plate (802) and the tail blade, and then lock the fixing strap (70).

11. The construction method according to claim 9, characterized in that, The steps of fixing and hoisting the tail blade also include: Install a guy rope (90) and connect the guy rope (90) to the guard plate (80).

12. The construction method according to claim 9, characterized in that, The step of fixing and hoisting the tail blade also includes: After the tail blade is parallel to the extension direction of the tower (200), the fixing strap (70) is loosened, so that the fixing strap (70) and the guard plate (80) are separated from the tail blade.

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