Displacement amplification type tuned mass inertia damper for fan blades and installation method thereof

Abstract

A displacement-amplifying tuned mass inertia damper for fan blades and its installation method, comprising a tuned mass inertia damper, a fan blade, a steel wire rope and a Class A component. The tuned mass inertia damper amplifies the tiny displacement generated by the vibration of the fan blade by using the lever principle through a displacement-amplifying vibration-damping mechanism, drives the inertia disk to reciprocate vertically on the screw, so that the inertia disk and the vibration-damping control spring generate damping force and elastic force. At the same time, when the blade speed changes, the centripetal force generated by the tuned mass inertia damper along the line connecting the blade tip to the blade root and the gravity of the inertia disk along the screw direction also change accordingly, thereby effectively controlling the displacement generated by the vibration of the fan blade and achieving energy dissipation and vibration reduction. In addition, in the direction perpendicular to the line connecting the blade tip and the blade root, the damping force generated by the rotation of the inertia disk when the fan blade vibrates can effectively suppress the inertia effect of the overall structure of the damper, thereby further improving the efficiency of energy dissipation and vibration control.

Description

Technical Field

[0001] The invention relates to a vibration reduction control technology for a fan structure, and in particular to a vibration reduction control technology for a displacement amplification type tuned mass inertia damper for a fan blade. Background Art

[0002] As the global demand for clean energy continues to increase, wind power generation, as an important form of renewable energy, is rapidly expanding in both installed capacity and single-unit capacity. As the core component of the wind power generation system, the size of wind turbine blades is also increasing, which not only improves the efficiency of wind energy capture, but also increases the structural flexibility and sensitivity to horizontal loads, resulting in more obvious vibration problems. This will not only affect the stable operation of wind turbines, but may also cause blade fatigue damage, structural failure, and even the collapse of the entire wind turbine generator set, seriously threatening the safe operation of the wind farm. Traditional wind turbine blade vibration reduction technology mainly relies on active control systems or passive dampers. Although active control systems can achieve active control of vibration, they require continuous input of external energy, and the control system is complex and costly. Especially when the wind turbine blades rotate at high speed, the supply of external energy and the stability of the control system face severe challenges. The tuned mass inertial damper (TMDI), as a passive damper, can generate an inertial force in the opposite direction of blade vibration through its internal inertial element and mass block. This inertial force and the vibration generated by the blade offset each other, thereby reducing the vibration of the blade.

[0003] Under the action of complex and changeable environmental loads, wind turbine blades are prone to vibration problems. However, current technologies are still limited in utilizing displacement caused by structural vibration, and have failed to effectively transform the adverse factors generated by the structure to enhance the effectiveness of the vibration reduction device, such as the patented technology "A tall vibration reduction chimney with an inertia device" (patent application number: 2020115755813). As a commonly used mechanism, levers can achieve displacement amplification, force direction change and balance through the rational use of the lever principle, thereby improving the working efficiency and use effect of mechanical devices. Combining the characteristics of tuned mass inertia dampers and the universal applicability of the lever principle, in order to more effectively reduce the vibration of the blades and produce a damper with greater damping force, a displacement amplification tuned mass inertia damper applied to wind turbine blades is proposed based on the displacement amplification effect of the lever. Summary of the invention

[0004] The object of the present invention is to provide a displacement amplification type tuned mass inertia damper for fan blades and a mounting method thereof.

[0005] The present invention relates to a displacement-amplifying tuned mass inertia damper for fan blades and an installation method thereof. The displacement-amplifying tuned mass inertia damper for fan blades comprises a tuned mass inertia damper 6, a fan blade 3, a steel wire rope 1 and a class A component 4, and is characterized in that the tuned mass inertia damper 6 comprises a shell 618, an alloy limiting device, a coordinated distribution system, and a displacement-amplifying vibration-damping mechanism. The shell 618 is a cylinder, and an upper annular cover plate 601 and a lower annular cover plate 619 with a class B component 2 attached thereto are welded to the upper and lower parts respectively; the alloy limiting device is composed of an alloy limiting cylinder 602, which is welded to the inner side of the shell 618 through a No. II fixing rod 612, and an anti-collision rubber ring 603 is attached to the lower part of the alloy limiting cylinder 602; the coordinated distribution system welds a No. 1 connecting rod spherical hinge support 609 with an alloy buckle 7 on the upper connecting rod through three No. III fixing rods 615. and the coordination distribution ring 616, and then weld the 8-way No. 2 connecting rod spherical hinge support 610 below the coordination distribution ring 616, and finally weld it to the inner side of the shell 618 through the No. Ⅰ fixing rod 611; the displacement amplification type vibration reduction mechanism is composed of a stainless steel support ring 614 equipped with a sliding rod type movable hinge support 5, an L-shaped groove rod 613, an inertia disk 606, a vibration reduction control spring 607 and a square fixed steel plate 608; one end of the L-shaped groove rod 613 is welded to the No. 2 connecting rod spherical hinge support 610, and the other end passes through the alloy limit device and is connected in turn with the No. 1 long screw 604 equipped with a long nut 605 and an inertia disk 606, the No. Ⅵ fixing rod 617, the vibration reduction control spring 607 and the square fixed steel plate 608, and finally is pasted on the lower annular cover plate; then the tuned mass inertia damper 6 is connected to the fan blade 3 through the wire rope 1 and the Class A component 4 to form a whole.

[0006] The installation method of the displacement amplification type tuned mass inertia damper for fan blades of the present invention comprises the following steps:

[0007] Step (1): Based on the outer shell 618, eight sets of II-number fixing rods 612 are used to weld the eight alloy limit cylinders 602 on the inner side, and then the coordination distribution ring 616 is welded to the outer shell 618 with I-number fixing rods 611;

[0008] Step (2): Install the coordination distribution system, weld the No. 1 connecting rod spherical hinge support 609 to the center of the coordination distribution ring 616 through the No. III fixing rod 615, and weld 8 inverted No. 2 connecting rod spherical hinge supports 610 at its lower part;

[0009] Step (3): Install the slide bar type movable hinge support 5. Weld the slide bar type movable hinge support 5 on the coordinated distribution ring 616 installed in step (1). Connect the annular upper blade support 502 and the groove fixed support 503 together with the screw 504 and the ring nut 505. Install the spherical slide bar 501 in the semicircular slide groove 506.

[0010] Step (4): Install the displacement amplification type vibration reduction mechanism. First, put the anti-collision rubber ring 603 on the No. 1 long screw 604 in sequence, weld the inertia plate 606 with the long nut 605 and the anti-collision rubber ring 603, and then stick the sliding rod type movable hinge support 5 in step (3) into the groove of the L-shaped groove rod 613, one end of which is respectively welded to the connecting rods of the 8 inverted No. 2 connecting rod spherical hinge supports 609, and the other end is connected to the No. 1 long screw 604, the No. VI fixing rod 617 and the vibration reduction control spring 607, and finally stick it on the lower annular cover plate 619 through the square fixing steel plate 608;

[0011] Step (5): After the 8-way displacement amplification vibration reduction mechanism is installed in sequence according to steps 2 to 4, the lower annular cover plate 619 is welded to the outer shell.

[0012] Step (6): Select a steel wire rope 1 of a certain length, tie one end to the stainless steel pull ring 620 and fix it with an alloy buckle 7, and tie the other end to the type A component 4 installed on the blade tip.

[0013] Step (7): Connect the Class B component (2) to the lower annular cover plate 619 with bolts, and then fasten it to the fan blades 3 via the wire rope 1 to form a whole.

[0014] The present invention has the following advantages over the prior art:

[0015] 1. The displacement amplification type tuned mass inertia damper for fan blades of the present invention is easy to connect and install. After the components are assembled in sequence, they only need to be welded on the inner side of the shell, which is simple to operate and easy to construct.

[0016] 2. The displacement amplification tuned mass inertial damper for wind turbine blades of the present invention combines the synergistic interaction of an external tuned mass damper and an internal tuned mass inertial damper, and plays a role in bidirectional vibration reduction control in the vertical and horizontal directions on the displacement generated by blade vibration.

[0017] 3. The displacement-amplification tuned mass inertia damper for fan blades of the present invention, the displacement-amplification vibration reduction mechanism of the damper cleverly uses the lever principle to effectively amplify the tiny displacement generated by the blade, drive the inertia disk to reciprocate along the screw, so that the inertia disk and the vibration control spring installed at the bottom of the inertia disk generate damping force and elastic force in the opposite direction of blade vibration, thereby dissipating energy and reducing blade vibration. In the direction perpendicular to the blade tip and the blade root, when the blade vibrates, the inertia force generated by the rotation of the inertia disk can effectively suppress the inertia effect of the overall structure of the damper, thereby further improving the efficiency of energy dissipation and vibration control. In addition, the vibration control spring is installed on the lower annular cover plate and connected to the No. 1 long screw, which not only plays a role in stabilizing the displacement-amplification vibration reduction mechanism, but also enhances the movement amplitude of the inertia disk and the energy dissipation of the displacement-amplification vibration reduction mechanism through its elastic restoring force. The damper significantly improves the efficiency of vibration control through multi-directional and multi-faceted vibration control design.

[0018] 4. The displacement amplification type tuned mass inertia damper for fan blades of the present invention introduces an L-shaped slotted rod structure equipped with a sliding rod type movable hinge support in the design of the displacement amplification type vibration reduction mechanism. This structure not only undertakes the core function of displacement amplification, but also eliminates the arc trajectory generated by the movement of the L-shaped slotted rod itself through the innovative design of slotting thereon. This design further optimizes the performance of the vibration reduction mechanism.

[0019] 5. The displacement amplification type tuned mass inertia damper for wind turbine blades of the present invention can not only be effectively applied to the vibration reduction control of wind turbine blades, but also has wide applicability and can be applied to the vibration reduction control in other structures, such as wind turbine cabins, tall structures, steel structures, and frame structures.

[0020] 6. The displacement amplification tuned mass inertia damper for fan blades of the present invention has a clear design concept and a wide range of applications. Through multi-directional coordination and multi-faceted vibration reduction control strategies, the limited space inside the fan blades is efficiently utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the combination of the displacement amplification type tuned mass inertia damper for wind turbine blades of the present invention in a wind turbine blade. Figure 2 This is a schematic diagram of the internal combination of the displacement amplification type tuned mass inertia damper for the fan blade of the present invention and the combination after the force transmission device is completed. Figure 3 1-1 is a cross-sectional view of a displacement amplification type tuned mass inertia damper for a fan blade according to the present invention, Figure 4 The figure is a detailed diagram of the sliding rod and each connecting component of the L-shaped slot rod of the displacement amplification type tuned mass inertia damper for the fan blade of the present invention. Figure 5This is a detailed diagram of the adhesive connection (type A component) between the blade and the device of the displacement amplification type tuned mass inertia damper for the fan blade of the present invention. Figure 6 This is a detailed diagram of the bolt connection (type B component) on the lower annular cover plate of the displacement amplification type tuned mass inertia damper for fan blades of the present invention, wherein: 1: wire rope, 2: type B component, 3: fan blade, 4: type A component, 5: sliding rod type movable hinge support, 6: displacement amplification type tuned mass inertia damper, 7: alloy buckle, 601: upper annular cover plate, 602: alloy limit cylinder, 603: anti-collision rubber ring, 604: No. 1 long screw, 605: long nut, 606: inertia disk, 607: vibration reduction control spring, 608: square fixed steel plate, 609: No. 1 connecting rod spherical hinge support, 610: No. 2 connecting rod spherical hinge support, 611: No. I fixing rod, 612: No. II fixing rod, 613: L-shaped groove rod, 614: stainless steel support ring, 615: No. III fixing rod, 616: coordination distribution ring, 617: No. VI fixing rod, 618: shell, 619: lower annular cover plate, 620: stainless steel pull ring, 201: No. 2 screw rod, 202: hexagonal nut, 401: anti-friction rubber pad, 402: annular plate fixing support, 501: spherical sliding rod, 502: annular upper knife edge support, 503: groove fixing support, 504: screw, 505: ring nut, 506: semicircular slide groove, 507: anti-collision buffer rubber pad, 508: lubricant. DETAILED DESCRIPTION

[0022] like Figure 1 to Figure 5As shown, the present invention is a displacement amplification type tuned mass inertia damper for fan blades and an installation method thereof. The present invention is a displacement amplification type tuned mass inertia damper for fan blades, comprising a tuned mass inertia damper 6, a fan blade 3, a wire rope 1 and a type A component 4. The tuned mass inertia damper 6 comprises a shell 618, an alloy limiting device, a coordinated distribution system, and a displacement amplification type vibration reduction mechanism. The shell 618 is a cylinder, and an upper annular cover plate 601 and a lower annular cover plate 619 with a type B component 2 are welded on the upper and lower parts respectively; the alloy limiting device is welded to the inner side of the shell 618 by an alloy limiting cylinder 602 through a No. II fixing rod 612, and an anti-collision rubber ring 603 is pasted under the alloy limiting cylinder 602; the coordinated distribution system welds the No. 1 connecting rod spherical hinge support 60 with an alloy buckle 7 on the upper connecting rod through three No. III fixing rods 615 9 and the coordination distribution ring 616 are connected, and then the 8-way No. 2 connecting rod spherical hinge support 610 is welded below the coordination distribution ring 616, and finally welded to the inner side of the shell 618 through the No. Ⅰ fixing rod 611; the displacement amplification type vibration reduction mechanism is composed of a stainless steel support ring 614 equipped with a sliding rod type movable hinge support 5, an L-shaped groove rod 613, an inertia disk 606, a vibration reduction control spring 607 and a square fixed steel plate 608; one end of the L-shaped groove rod 613 is welded to the No. 2 connecting rod spherical hinge support 610, and the other end passes through the alloy limit device and is connected in turn with the No. 1 long screw 604 equipped with a long nut 605 and an inertia disk 606, the No. Ⅵ fixing rod 617, the vibration reduction control spring 607 and the square fixed steel plate 608, and finally pasted on the lower annular cover plate; then the tuned mass inertia damper 6 is connected to the fan blade 3 through the wire rope 1 and the Class A component 4 to form a whole.

[0023] like Figure 2 , Figure 4 As shown, the slide rod type movable hinge support 5 is pasted into the L-shaped groove rod 613 and then fixed on the stainless steel support ring 614. By using the lever principle, the tiny displacement caused by the vibration of the fan blade is significantly amplified in the vertical direction to accelerate the reciprocating motion of the inertia disk, so that the inertia disk and the vibration control spring installed at the bottom generate a damping force and an elastic force opposite to the vibration direction of the blade, thereby significantly improving the energy dissipation and vibration reduction effect; in the direction perpendicular to the blade tip and the blade root, when the fan blade vibrates, the inertia force generated by the rotation of the inertia disk can effectively suppress the inertia effect of the overall structure of the damper, thereby further improving the efficiency of energy dissipation and vibration control.

[0024] like Figure 2 , Figure 3 , Figure 4As shown, the slide bar type movable hinge support 5 is composed of a spherical slide bar 501, an annular upper blade support 502, a groove fixed support 503, a screw 504, an annular nut 505, a semicircular slide groove 506, and an anti-collision buffer rubber pad 507 from top to bottom. Lubricant 508 is added to the semicircular slide groove 506 to increase the effective movement of the spherical slide bar 501 and avoid the potential arc movement trajectory of the L-shaped groove rod 613.

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, with the No. 1 connecting rod spherical hinge support 609 as the center, eight No. 2 connecting rod spherical hinge supports 610 are welded at evenly spaced intervals along the coordination distribution ring 616. This design not only evenly distributes the tiny displacements produced by the blades, but also enables the tuned mass inertia damper to operate efficiently and coordinatedly.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the displacement amplification type vibration reduction mechanism is evenly distributed along the inner wall of the shell 618, and its position corresponds one-to-one with the eight No. 2 connecting rod spherical hinge supports 610 welded on the coordination distribution ring 616, thereby realizing multi-directional and multi-damping vibration reduction control.

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, the inertia disk 606 is a thin disk with a diameter twice that of the alloy limiting cylinder 602 . A long nut 605 is welded at the central circular hole and can move along the No. 1 long screw 604 .

[0028] The displacement-amplifying tuned mass inertial damper has good versatility and scalability, and can be applied to a variety of structural systems after proportionally adjusting its size, such as wind turbine blades, wind turbine towers, wind turbine cabins, tall structures, steel structures, and frame structures.

[0029] like Figure 1 , Figure 2As shown, the present invention combines a tuned mass damper 6, a steel wire rope 1 and various components and other key components into an integrated vibration reduction system, which is tightly connected to the fan blades, and is intended to jointly resist the adverse effects of external excitation on the fan blades and achieve efficient vibration reduction. Specifically, the tuned mass inertia damper 6, as a passive vibration reduction control means, can not only effectively reduce the vibration of the fan blades during the rotation of the fan blades, but also use its inertial force during vibration to effectively reduce the tiny displacement effect generated by the blade vibration. In addition, the damper can be widely used in various large and tall structures due to its simple structure and convenient installation. The damper is innovatively configured with 8 groups of identical displacement amplification vibration reduction mechanisms, which are evenly distributed along the inner wall of the outer shell 618 and coordinatedly distributed through the upper spherical hinge support. When the fan blades produce a small vibration displacement, the L-shaped slot rod is supported on the stainless steel support ring. With the help of the lever principle, the displacement of the support rods of different lengths on the L-shaped slot rod can be amplified, and the inertia disk is driven to reciprocate along the screw in the vertical direction, so that the vibration control spring installed at the bottom produces an elastic force opposite to the vibration direction of the blade. At the same time, as the rotation speed of the blade changes, the centripetal force generated by the damper along the line connecting the blade tip to the blade and the gravity of the inertia disk along the screw direction also change accordingly. This dynamic adjustment effectively increases or decreases the elastic force of the vibration control spring and adjusts the small displacement of the blade, thereby effectively dissipating energy and reducing the vibration of the blade. In addition, in the direction perpendicular to the blade tip and the blade root, when the blade vibrates, the inertial force generated by the rotation of the inertia disk can effectively suppress the inertial effect of the overall structure of the damper, thereby further improving the efficiency of energy dissipation and vibration control. More importantly, the entire device itself constitutes a tuned mass damper, which is connected to the damper through the Class B components (such as Figure 6 The blades are firmly connected to the bearings (as shown in the figure) to form a multi-directional and multi-damping vibration reduction system. This comprehensive design not only fully utilizes the synergy of each component, but also significantly improves the vibration reduction efficiency.

[0030] like Figure 4 The figure shows the installation connection diagram of the sliding rod type movable hinge support and the L-shaped slot rod of the displacement amplification vibration reduction mechanism. The lever principle is used to set a fulcrum on the short arm of the L-shaped slot rod, thereby forming an unequal arm lever structure. This design enables the blade-driven support rod movement to further amplify the tiny displacement generated by the blade, thereby stimulating the inertia effect of the inertia disk and effectively reducing the vibration of the blade. In addition, the L-shaped slot rod is innovatively designed as a groove structure. This feature can effectively offset the displacement generated by the L-shaped slot rod itself during movement, thereby avoiding unnecessary collision with the alloy limit cylinder.

[0031] like Figure 1 to Figure 5 As shown, the installation method of the displacement amplification type tuned mass inertia damper for fan blades of the present invention comprises the following steps:

[0032] Step (1): Based on the outer shell 618, eight sets of No. II fixing rods 612 are used to weld eight upper alloy limit cylinders 602 on the inner side, and then the coordination distribution ring 616 is welded to the outer shell 618 using No. I fixing rods 611;

[0033] Step (2): Install the coordination distribution system, weld the No. 1 connecting rod spherical joint 609 support to the center of the coordination distribution ring 616 through the No. III fixing rod 615, and weld 8 inverted No. 2 connecting rod universal spherical joint 609 supports at its lower part;

[0034] Step (3): Install the slide bar type movable hinge support 5. Weld the slide bar type movable hinge support 5 on the coordinated distribution ring 616 installed in step (1). Connect the annular upper knife edge support 502 and the groove fixed support 503 together with the screw 504 and the ring nut 505. Install the spherical slide bar 501 in the semicircular slide groove 506.

[0035] Step (4): Install the displacement amplification type vibration reduction mechanism. First, put the anti-collision rubber ring 603 on the No. 1 long screw 604 in sequence, weld the inertia plate 606 with the long nut 605 and the anti-collision rubber ring 603, and then stick the sliding rod type movable hinge support 5 in step (3) into the groove of the L-shaped groove rod 613, one end of which is respectively welded to the connecting rods of the 8 inverted No. 2 connecting rod spherical hinge 609 supports, and the other end is connected to the No. 1 long screw 604, the No. VI fixing rod 617 and the vibration reduction control spring 607, and finally stick it on the lower annular cover plate 619 through the square fixing steel plate 608;

[0036] Step (5): After the 8-way displacement amplification type vibration reduction mechanism is installed in sequence according to steps 2 to 4, the lower annular cover plate 619 is welded to the outer shell;

[0037] Step (6): select a steel wire rope 1 of a certain length, fasten one end to the stainless steel pull ring 620 and fix it with an alloy buckle 7, and fasten the other end to the type A component 4 installed on the blade tip;

[0038] Step (7): Connect the Class B component to the lower annular cover plate 619 with bolts, and then fasten it to the blade 3 via the wire rope 1 to form a whole.

[0039] The present invention is based on the principle of lever. The damper is connected to the tip of the wind turbine blade through a steel wire rope, and is integrated with the blade into a complete vibration reduction system with the help of a series of components. In this system, the tiny displacement caused by the vibration of the wind turbine blade is transmitted through the spherical hinge support, and the displacement is further amplified according to the principle of lever using an L-shaped slot rod installed on a stainless steel support ring. This design causes the inertia disk in the displacement amplification vibration reduction mechanism to reciprocate along the No. 1 long screw, so that the elastic restoring force generated by the vibration reduction control spring installed on the lower annular cover plate can effectively suppress the displacement caused by the vibration of the wind turbine blade, thereby achieving vibration reduction and energy dissipation. In addition, the performance of the tuned mass inertia damper is dynamically adjusted with the change of the rotation speed of the wind turbine blade. Specifically, as the rotation speed increases or decreases, the centripetal force generated by the tuned mass inertia damper along the line connecting the blade tip and the fan blade and the gravity of the inertia disk along the screw direction also change, thereby accelerating (or slowing down) the movement speed of the inertia disk. This change not only adjusts the tiny displacement of the fan blade, but also increases (or decreases) the elastic force of the vibration control spring, thereby effectively reducing the structural vibration. The damper has a simple and clear structure, a clear force transmission path, and is easy to design and calculate. At the same time, its construction process is simple and shows a wide range of applicability, providing an innovative solution for vibration control of fan blades and other structures.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A displacement amplification tuned mass inertia damper for a fan blade, comprising a tuned mass inertia damper (6), a fan blade (3), a steel wire rope (1) and a type A component (4), characterized in that: The tuned mass inertia damper (6) comprises a shell (618), an alloy limit device, a coordinated distribution system, and a displacement amplification type vibration reduction mechanism; the shell (618) is a thin-walled cylinder, and an upper annular cover plate (601) and a lower annular cover plate (619) with a Class B component (2) attached thereto are welded on the upper and lower parts respectively; the alloy limit device is an alloy limit tube (602) welded to the inner side of the shell (618) through a No. II fixing rod (612), and an anti-collision rubber ring (603) is attached below the alloy limit tube (602); the coordinated distribution system connects the No. 1 connecting rod spherical hinge support (609) with an alloy buckle (7) welded on the upper connecting rod and the coordinated distribution ring (616) through three No. III fixing rods (615), and then eight No. 2 connecting rod spherical hinge supports (610) are welded below the coordinated distribution ring (616), and finally through The No. Ⅰ fixing rod (611) is welded to the inner side of the housing (618); the displacement amplification type vibration reduction mechanism is composed of a stainless steel support ring (614) equipped with a sliding rod type movable hinge support (5), an L-shaped groove rod (613), an inertia disk (606), a vibration reduction control spring (607) and a square fixed steel plate (608); one end of the L-shaped groove rod (613) is welded to the No. 2 connecting rod spherical hinge support (610), and the other end passes through the alloy limit device and is connected in sequence to the No. 1 long screw rod (604) equipped with a long nut (605) and an inertia disk (606), the No. Ⅵ fixing rod (617), the vibration reduction control spring (607) and the square fixed steel plate (608), and finally is glued to the lower annular cover plate; then the tuned mass inertia damper (6) is connected to the fan blade (3) through the steel wire rope (1) and the Class A component (4) to form a whole.

2. The displacement amplification type tuned mass inertia damper for wind turbine blades according to claim 1, characterized in that: The slide bar type movable hinge support (5) is pasted into the L-shaped groove rod (613) and then fixed on the stainless steel support ring (614).

3. The displacement amplification type tuned mass inertia damper for wind turbine blades according to claim 1, characterized in that: The slide bar type movable hinge support (5) is composed of a spherical slide bar (501), an annular upper blade support (502), a groove fixed support (503), a screw (504), an annular nut (505), a semicircular slide groove (506), and an anti-collision buffer rubber pad (507) from top to bottom. Adding lubricant (508) to the semicircular slide groove (506) can increase the effective movement of the spherical slide bar (501) and avoid the potential arc movement trajectory of the L-shaped groove bar (613).

4. The displacement amplification type tuned mass inertia damper for wind turbine blades according to claim 1, characterized in that: With the No. 1 connecting rod spherical hinge support (609) as the center, eight No. 2 connecting rod spherical hinge supports (610) are welded evenly and equidistantly around the coordination distribution ring (616).

5. The displacement amplification type tuned mass inertia damper for wind turbine blades according to claim 1, characterized in that: The displacement amplification type vibration reduction mechanism is evenly distributed along the inner wall of the outer shell (618), and its position corresponds one-to-one with the eight No. 2 connecting rod spherical hinge supports (610) welded on the coordination distribution ring (616), thereby realizing multi-directional multi-damping vibration reduction control.

6. The displacement amplification type tuned mass inertia damper for wind turbine blades according to claim 1, characterized in that: The inertia disk (606) is a thin disk with a diameter twice that of the alloy limiting cylinder (602). A long nut (605) is welded at the central circular hole and can move along the No. 1 long screw (604).

7. The installation method of the displacement amplification type tuned mass inertia damper for wind turbine blades according to claim 3 is characterized in that: The steps are: Step (1): Based on the outer shell (618), eight sets of No. II fixing rods (612) are used to weld eight alloy limit cylinders (602) on the inner side, and then the coordination distribution ring (616) is welded to the outer shell (618) using No. I fixing rods (611); Step (2): Install the coordination distribution system, weld the No. 1 connecting rod spherical hinge support (609) to the center of the coordination distribution ring (616) through the No. III fixing rod (615), and weld 8 inverted No. 2 connecting rod spherical hinge supports (610) at its lower part; Step (3): Install the slide bar type movable hinge support (5), weld the slide bar type movable hinge support (5) on the coordinated distribution ring (616) installed in step (1), connect the annular upper blade support (502) and the groove fixed support (503) together with screws (504) and ring nuts (505), and install the spherical slide bar (501) in the semicircular slide groove (506); Step (4): Install the displacement amplification type vibration reduction mechanism. First, put the anti-collision rubber ring (603) on the No. 1 long screw (604) in sequence, weld the inertia plate (606) with the long nut (605) and the anti-collision rubber ring (603), and then stick the sliding rod type movable hinge support (5) in step (3) into the groove of the L-shaped groove rod (613), one end of which is respectively welded to the connecting rods of the 8 inverted No. 2 connecting rod spherical hinge supports (609), and the other end is connected to the No. 1 long screw (604), the No. VI fixing rod (617) and the vibration reduction control spring (607), and finally stick it on the lower annular cover plate (619) through the square fixing steel plate (608); Step (5): After the 8-way displacement amplification type vibration reduction mechanism is installed in sequence according to steps 2 to 4, the lower annular cover plate (619) is welded to the outer shell; Step (6): Select a steel wire rope (1) of a certain length, tie one end to the stainless steel pull ring (620), and fix it with an alloy buckle (7), and tie the other end to the type A component (4) installed on the blade tip; Step (7): Connect the type B component (2) to the lower annular cover plate (619) with bolts, and then tie it to the fan blade (3) through the steel wire rope (1) to form a whole.

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