Blade damper

Abstract

The invention relates to a blade damper which is applied to the field of wind power generation and comprises a supporting frame arranged on the inner surface of a blade, a lead screw is arranged on the supporting frame, the outer edge of the lead screw is in threaded connection with a lead screw nut, a mass unit is arranged on the lead screw nut, and the damper further comprises an adjusting unit used for controlling formation of the mass unit. The blade vibration suppression device has the technical effects that when the blade vibrates, the vibration of the blade is firstly transmitted to the screw rod nut and the mass unit which are arranged on the supporting frame through the supporting frame, and then the mass unit drives the screw rod and the screw rod nut on the supporting frame to move to generate a damping effect so as to suppress the vibration of the blade; and the lead screw can drive the adjusting unit to move while moving, and the stroke of the mass unit is controlled through the adjusting unit, so that the damping effect of the blade is further improved, the amplitude of the blade is effectively reduced, the fatigue load of the blade is reduced, the working effect of the blade is improved, and the service life of the blade is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a blade damper. Background Art

[0002] With the continuous development of wind power technology, the power of wind turbines is getting bigger and bigger, and blades are an important component of wind turbines that convert wind energy into electrical energy.

[0003] The proposal of this application is mainly to solve the common pain points and difficulties of the existing damping technology in the blade market. Particle damping and vibration reduction are used as an example for explanation: Publication No. CN105257485A discloses a wind turbine blade using particle damping and vibration reduction, including a blade body, wherein the body is provided with two upper and lower main beams opposite to each other along the span direction of the blade, and a shear web is provided between the two main beams, and the characteristic is that a plurality of vibration reduction chambers are arranged at equal intervals on the inner side surface of each main beam along the span direction of the blade, and damping particles are filled in the chambers.

[0004] In actual applications, the vibration reduction chamber of the wind turbine blades with particle damping may age, wear or be damaged due to long-term exposure of the blades to harsh environments, causing the damping particles to leak, thereby failing to effectively reduce the blade amplitude, increasing the fatigue load of the blades and seriously affecting the fatigue life of the blades. Summary of the invention

[0005] In order to help solve the problem that the damping particles of wind turbine blades with particle damping and vibration reduction are prone to leakage during long-term use, thereby failing to effectively reduce the blade amplitude, causing the fatigue load of the blade to increase, and seriously affecting the fatigue life of the blade, the present application provides a blade damper, which adopts the following technical solution: it includes a support frame arranged on the inner surface of the blade, the support frame is provided with a screw, the outer edge of the screw is threadedly connected with a screw nut, the screw nut is provided with a mass unit, and the damper also includes an adjustment unit for controlling the stroke of the mass unit.

[0006] In a specific feasible implementation scheme, the mass unit includes a first transmission plate arranged on the lead screw nut, a plurality of first mass blocks are arranged on the first transmission plate, the first transmission plate is connected to the blade through a first limit assembly, the adjustment unit includes a fixed frame arranged on the lead screw nut and coaxially arranged with the lead screw nut, the fixed frame passes through the first transmission plate and is rotatably connected to the first transmission plate, a magnetic steel is arranged on the fixed frame, a conductive ring corresponding to the magnetic steel is provided on the surface of the first transmission plate facing the magnetic steel, a plurality of first flywheel pieces are provided on the surface of the magnetic steel facing away from the conductive ring, and the lead screw passes through the plurality of first flywheel pieces, the magnetic steel and the conductive ring in sequence.

[0007] In a specific feasible implementation scheme, the first limiting assembly includes two first support seats arranged on a support frame, a first sliding rod is provided between the two first support seats, the first sliding rod is arranged parallel to the screw rod, a first linear bearing seat is slidably connected to the first sliding rod, and the first linear bearing seat is arranged on a first transmission plate.

[0008] In a specific implementation scheme, two first compression springs are sleeved on the outer edge of the first sliding rod, and the two first compression springs are respectively located on both sides of the first linear bearing seat.

[0009] In a specific feasible implementation scheme, the mass unit includes a second transmission plate arranged on the screw nut, a plurality of second mass blocks are arranged on the second transmission plate, two second support seats are arranged on the support frame, the screw is rotatably connected between the two support seats, the second transmission plate is connected to the blade through a second limit assembly, the adjustment unit includes a mounting frame arranged on the support frame, a first damping motor is arranged on the mounting frame, the first damping motor is extended from both ends of the rotating shaft of the first damping motor, the rotating shaft of the first damping motor is coaxially connected to the screw at one end facing the screw, a plurality of second flywheel sheets are fixedly sleeved at one end of the rotating shaft of the first damping motor facing away from the screw, and an energy dissipation device for dissipating energy is connected to the first damping motor.

[0010] In a specific feasible implementation scheme, the second limiting assembly includes two third support seats and two fourth support seats arranged on the support frame, a second sliding rod is provided between the two third support seats, a third sliding rod is provided between the two fourth support seats, the second sliding rod and the third sliding rod are arranged parallel to the screw rod and the screw rod is located between the second sliding rod and the third sliding rod, a second linear bearing seat is slidably connected to the second sliding rod, a third linear bearing seat is slidably connected to the third sliding rod, and the second linear bearing seat and the third linear bearing seat are both arranged on the second transmission plate.

[0011] In a specific feasible implementation scheme, the outer edge sleeve of the second sliding rod is provided with two second compression springs, and the two second compression springs are respectively located on both sides of the second linear bearing seat, and the outer edge sleeve of the third sliding rod is provided with two third compression springs, and the two third compression springs are respectively located on both sides of the third linear bearing seat.

[0012] In a specific feasible implementation scheme, the mass unit includes two fifth support seats arranged on the support frame, the screw rod is rotatably connected between the two fifth support seats, the screw rod nut is provided with a transmission frame, the support frame is rotatably connected with a swing frame, the swing frame is respectively provided with a first sliding hole and a second sliding hole, the transmission frame is slidably connected in the first sliding hole, the swing frame is connected to the blade through a third limiting assembly, the adjustment unit includes a second damping motor arranged on the support frame, a connecting shaft is fixedly sleeved at one end of the screw rod facing the second damping motor, a plurality of third flywheel pieces are fixedly sleeved on the outer edge of the connecting shaft, and the end of the connecting shaft facing the second damping motor is coaxially connected to the rotating shaft of the second damping motor.

[0013] In a specific feasible implementation scheme, the third limiting assembly includes a cross bar arranged on a support frame, a mass frame is slidably connected to the cross bar, the mass frame is slidably connected in a second sliding hole, a connecting seat is provided on the mass frame, two sixth supporting seats are provided on the support frame, a fourth sliding rod is provided between the two sixth supporting seats, the fourth sliding rod passes through the connecting seat and is slidably connected to the connecting seat, the screw rod, cross bar and fourth sliding rod are arranged in parallel, and two fourth compression springs are provided on the outer edge of the fourth sliding rod, and the two fourth compression springs are respectively located on both sides of the connecting seat.

[0014] In a specific feasible implementation scheme, a first roller is rotatably connected to the transmission frame, two first slide rails matching the first roller are provided on the surface of the swing frame facing away from the transmission frame, the first roller is rollingly connected between the two first slide rails, and a second roller matching the two first slide rails is rotatably connected to the surface of the mass frame facing the swing frame, the second roller is rollingly connected between the two first slide rails.

[0015] To summarize, the present application has at least the following beneficial technical effects: when the blade vibrates, the vibration of the blade will first be transmitted to the screw nut and the mass unit arranged on the support frame through the support frame, and then the mass unit will drive the screw and the screw nut on the support frame to move to produce a damping effect to suppress the vibration of the blade; and the screw will drive the adjustment unit to move while moving, and the stroke of the mass unit is controlled by the adjustment unit, thereby further enhancing the damping effect of the blade and effectively reducing the amplitude of the blade, so that the fatigue load of the blade is reduced and the working effect and service life of the blade are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0017] Figure 2 It is a schematic diagram of the application scenario of the second embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the present application.

[0019] Figure 4 It is a schematic diagram of the overall structure of Example 3 of the present application.

[0020] Figure numerals: 1, blade; 2, support frame; 3, lead screw; 4, lead screw nut; 5, first transmission plate; 6, first mass block; 7, fixed frame; 8, magnetic steel; 9, conductive ring; 10, first flywheel; 11, first support seat; 12, first linear bearing seat; 13, first compression spring; 14, second transmission plate; 15, second mass block; 16, second support seat; 17, mounting frame; 18, first damping motor; 19, second flywheel; 20, third support seat; 21, fourth support seat; 22, first The second slide bar; 23, the third slide bar; 24, the second linear bearing seat; 25, the third linear bearing seat; 26, the second compression spring; 27, the third compression spring; 28, the fifth support seat; 29, the transmission frame; 30, the swing frame; 31, the first sliding hole; 32, the second sliding hole; 33, the second damping motor; 34, the connecting shaft; 35, the third flywheel; 36, the cross bar; 37, the quality frame; 38, the connecting seat; 39, the sixth support seat; 40, the fourth slide bar; 41, the fourth compression spring; 42, the first slide bar. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-4 This application is described in further detail.

[0022] An embodiment of the present application discloses a blade damper.

[0023] Reference Figure 1 The blade damper includes a support frame 2 arranged on the inner surface of the blade 1. The blade 1 is a hollow structure. A screw rod 3 is arranged on the support frame 2. The outer edge of the screw rod 3 is threadedly connected with a screw nut 4 whose size matches the screw rod 3. A mass unit is arranged on the screw nut 4. The blade damper also includes an adjustment unit for controlling the stroke of the mass unit.

[0024] Therefore, when the blade 1 is shut down or enters the working state, the vibration of the blade 1 will first be transmitted to the screw nut 4 and the mass unit arranged on the support frame 2 through the support frame 2, and then the mass unit will drive the screw 3 and the screw nut 4 on the support frame to move to produce a damping effect to suppress the vibration of the blade 1; and the screw 3 will drive the adjustment unit to move while moving, and the stroke of the mass unit is controlled by the adjustment unit, thereby further enhancing the damping effect of the blade and effectively reducing the amplitude of the blade, so that the fatigue load of the blade is reduced and the working effect and service life of the blade are improved.

[0025] Embodiment 1

[0026] Reference Figure 1 The mass unit includes a first transmission plate 5 arranged on the screw nut 4, the first transmission plate 5 is connected to the blade 1 through a first limit assembly, and a plurality of stacked first mass blocks 6 are bolted to the first transmission plate 5; in the embodiment of the present application, the plurality of first mass blocks 6 are evenly distributed on both sides of the first transmission plate 5, so as to facilitate the distribution of the load of the first transmission plate 5 and improve the stability and balance of the first transmission plate 5 during movement.

[0027] Reference Figure 1 The adjustment unit includes a fixing frame 7 which is bolted to the screw nut 4 and is coaxially arranged with the screw nut 4. The fixing frame 7 passes through the first transmission plate 5 and is rotatably connected with the first transmission plate 5 through a bearing. The bearing supports the fixing frame 7, reduces friction and wear during movement, and ensures that the fixing frame 7 can rotate steadily and smoothly. A magnetic steel 8 is installed on the fixing frame 7. A conductive ring 9 corresponding to the position of the magnetic steel 8 is bolted to the surface of the first transmission plate 5 facing the magnetic steel 8. The conductive ring 9 is made of conductive material. The central axis of the magnetic steel 8 coincides with the central axis of the conductive ring 9. A plurality of stacked first flywheel pieces 10 are bolted to the surface of the magnetic steel 8 facing away from the conductive ring 9. The screw 3 passes through a plurality of first flywheel pieces 10, the magnetic steel 8 and the conductive ring 9 in sequence. The operator can remove the first flywheel piece 10 from the magnetic steel 8 by means of bolt disassembly, so that the number of the first flywheel pieces 10 can be set according to the actual size and model of the blade 1, which is convenient for adjusting the frequency during movement.

[0028] Reference Figure 1 The first limit assembly includes two first support seats 11 that are bolted to the support frame 2 and are arranged opposite to each other. A first slide bar 42 is installed between the two first support seats 11. The first slide bar 42 is arranged parallel to the screw rod 3. A first linear bearing seat 12 is slidably connected to the first slide bar 42. The first linear bearing seat 12 is arranged on the first transmission plate 5. The linear bearing seat adopts the principle of rolling friction and is in point contact with the shaft. Therefore, the friction resistance is small, which helps to reduce the friction and wear between the first slide bar 42 and the first linear bearing seat 12. Two first compression springs 13 are sleeved on the outer edge of the first slide bar 42. The two first compression springs 13 are respectively located on both sides of the first linear bearing seat 12. Therefore, when the blade 1 vibrates, the first transmission plate 5 moves along the direction of the first slide bar 42. The first slide bar 42 guides the first transmission plate 5, reducing the possibility of the first transmission plate 5 being offset. The first transmission plate 5 squeezes the first compression spring 13 during the movement. Through the compression and rebound of the first compression spring 13, the first transmission plate 5 is easy to reset, thereby further improving the damping effect of the blade.

[0029] The implementation principle of the first embodiment of the present application is: when the blade 1 vibrates and causes the screw rod 3 to move, the first transmission plate 5 and the first mass block 6 will drive the screw nut 4 to move along the direction of the screw rod 3, causing the screw nut 4 to rotate, and then the screw nut 4 drives the fixing frame 7 to rotate, thereby driving the magnet 8 to rotate, and the magnet 8 and the conductive ring 9 generate damping by cutting the magnetic lines of flux to control the stroke of the mass unit; thereby further improving the damping effect of the blade and effectively reducing the amplitude of the blade, so that the fatigue load of the blade is reduced and the working effect and service life of the blade are improved.

[0030] Embodiment 2

[0031] Reference Figure 2 When the blade damper is installed and used, the application scenario is to install the support frame 2 on the inner wall of the blade 1 with a hollow structure. Specifically, Figure 2 Schematic diagram of the cross section of blade 1 is shown in FIG.

[0032] Reference Figure 2 and Figure 3 The mass unit includes a second transmission plate 14 bolted to the screw nut 4, and a plurality of stacked second mass blocks 15 are bolted to the second transmission plate 14; two second support seats 16 arranged opposite to each other are bolted to the support frame 2, and the screw 3 is rotatably connected between the two support seats, and the second transmission plate 14 is connected to the blade 1 through a second limit assembly. The adjustment unit includes a mounting frame 17 arranged on the support frame 2, and a first damping motor 18 is mounted on the mounting frame 17, and the first damping motor 18 is extended from both ends of the rotating shaft of the first damping motor 18, and the rotating shaft of the first damping motor 18 is coaxially connected to the screw 3 at one end thereof, and a plurality of stacked second flywheel pieces 19 are fixedly sleeved at one end of the rotating shaft of the first damping motor 18 away from the screw 3, and the operator can set the number of the second flywheel pieces 19 according to the actual size and model of the blade 1, so as to adjust the frequency during movement. The first damping motor 18 is connected to an energy consuming device for consuming energy. The energy consuming device is electrically connected to the first damping motor 18. The first damping motor 18 generates electrical energy when it rotates. The electrical energy can be released through the energy consuming device, thereby optimizing circuit performance and ensuring that the first damping motor 18 can work smoothly.

[0033] Reference Figure 2 and Figure 3The second limit assembly includes two third support seats 20 and two fourth support seats 21 arranged on the support frame 2, a second slide bar 22 is installed between the two third support seats 20, a third slide bar 23 is arranged between the two fourth support seats 21, the second slide bar 22 and the third slide bar 23 are arranged in parallel with the screw rod 3, and the screw rod 3 is located between the second slide bar 22 and the third slide bar 23, which is convenient for balancing the load and improving the stability of the second transmission plate 14 during movement. The second slide bar 22 is slidably connected with a second linear bearing seat 24, and the third slide bar 23 is slidably connected with a third linear bearing seat 25. The second linear bearing seat 24 and the third linear bearing seat 25 are both arranged on the second transmission plate 14. The outer edge of the second slide bar 22 is sleeved with two second compression springs 26, and the two second compression springs 26 are respectively located on both sides of the second linear bearing seat 24, and the outer edge of the third slide bar 23 is sleeved with two third compression springs 27, and the two third compression springs 27 are respectively located on both sides of the third linear bearing seat 25.

[0034] Therefore, when the blade 1 vibrates, the second transmission plate 14 moves in the direction of the second slide bar 22 and the third slide bar 23. The second slide bar 22 and the third slide bar 23 guide the movement direction of the second transmission plate 14, reducing the possibility of position deviation of the second transmission plate 14 and improving the stability of the second transmission plate 14 during the movement. During the movement, the second transmission plate 14 simultaneously squeezes the second compression spring 26 and the third compression spring 27 on the same side. Through the compression and rebound of the second compression spring 26 and the third compression spring 27, the reset time of the second transmission plate 14 is shortened, thereby reducing vibration and improving stability during operation.

[0035] The implementation principle of the second embodiment of the present application is: when the blade 1 vibrates, the second transmission plate 14 and the second mass block 15 drive the screw nut 4 to move in the direction of the screw 3. Due to the threaded connection between the screw 3 and the screw nut 4, the screw nut 4 drives the screw 3 to rotate during its movement. The rotation of the screw 3 drives the first damping motor 18 to start and generate damping. At the same time, the rotating shaft of the first damping motor 18 drives the second flywheel 19 to rotate, thereby further improving the damping effect of the blade.

[0036] Embodiment 3

[0037] Reference Figure 4The mass unit includes two fifth support seats 28 arranged opposite to each other on the support frame 2, the screw rod 3 is rotatably connected between the two fifth support seats 28, the screw rod nut 4 is fixedly connected with a transmission frame 29, and the support frame 2 is rotatably connected with a swing frame 30 through a joint bearing. The joint bearing is a spherical sliding bearing, and its sliding contact surface consists of an inner spherical surface and an outer spherical surface. This structure allows the joint bearing to rotate and swing at any angle during movement. The swing frame 30 is respectively provided with a first sliding hole 31 and a second sliding hole 32, both of which are waist-shaped holes and are vertically arranged. The transmission frame 29 is slidably connected in the first sliding hole 31, and the transmission frame 29 is rotatably connected with a first roller on the surface facing the swing frame 30. Two first slide rails matching the size of the first roller are bolted to the surface of the swing frame 30 away from the transmission frame 29. The two first slide rails are arranged parallel to each other, and the first roller is rollingly connected between the two first slide rails. The swing frame 30 is connected to the blade 1 through a third limiting assembly, and the two first slide rails limit the rolling direction of the first roller. Through the rolling connection between the first roller and the first slide rail, the transmission frame 29 can slide smoothly in the first sliding direction.

[0038] Reference Figure 4 The adjustment unit includes a second damping motor 33 disposed on the support frame 2, and a connecting shaft 34 is coaxially sleeved at one end of the screw rod 3 facing the second damping motor 33. A plurality of third flywheel pieces 35 are fixedly sleeved at the outer edge of the connecting shaft 34. The operator can set the number of the third flywheel pieces 35 according to the actual size and model of the blade 1, so as to facilitate the adjustment of the frequency during movement. The end of the connecting shaft 34 facing the second damping motor 33 is coaxially connected to the rotating shaft of the second damping motor 33. The second damping motor 33 can be connected to an energy dissipation device for dissipating energy with reference to the first damping motor 18.

[0039] Reference Figure 4 The third limiting assembly includes a cross bar 36 arranged on the support frame 2, and a mass frame 37 is slidably connected to the cross bar 36; in the embodiment of the present application, the cross bar 36 passes through the mass frame 37 and a third roller is rotatably connected to the surface of the mass frame 37 facing the cross bar 36, and a second slide rail matching the third roller is bolted to the surface of the cross bar 36 facing the third roller, and the third roller is rollingly connected to the second slide rail, thereby further improving the smoothness of the mass frame 37 when sliding along the cross bar 36, and the number of the third rollers can be set to multiple according to the actual situation on site, thereby further improving the stability of the mass frame 37 when moving.

[0040] Reference Figure 4The mass frame 37 is slidably connected in the second sliding hole 32. The mass frame 37 is rotatably connected to a second roller matching the size of the two first slide rails on the surface facing the swing frame 30. The second roller is rollingly connected between the two first slide rails. The two first slide rails limit the rolling direction of the second roller. Through the rolling connection between the second roller and the first slide rail, the mass frame 37 can slide smoothly in the second sliding hole.

[0041] Reference Figure 4 , the mass frame 37 is bolted with a connection seat 38, the support frame 2 is bolted with two oppositely arranged sixth support seats 39, a fourth slide bar 40 is installed between the two sixth support seats 39, the fourth slide bar 40 passes through the connection seat 38 and is slidably connected with the connection seat 38, the screw rod 3, the cross bar 36 and the fourth slide bar 40 are arranged in parallel, and the outer edge of the fourth slide bar 40 is sleeved with two fourth compression springs 41, and the two fourth compression springs 41 are respectively located on both sides of the connection seat 38. In the embodiment of the present application, buffer pads can be installed on the two surfaces of the mass frame 37 facing the support frame 2 according to actual conditions. The buffer pads can be made of rubber material. When impacted, the buffer pads can quickly absorb energy and convert it into elastic potential energy, play the role of noise reduction, buffering and shock absorption, and reduce the possibility of collision and damage between the mass frame 37 and the support frame 2 during the sliding process.

[0042] Therefore, when the blade 1 vibrates, the connecting seat 38 moves in the direction of the fourth slide bar 40, and the fourth slide bar 40 guides the movement direction of the second transmission plate 14, reducing the possibility of position deviation of the connecting seat 38 and improving the stability of the connecting seat 38 during the movement process. The connecting seat 38 squeezes the fourth compression spring 41 during the movement. Through the compression and rebound of the fourth compression spring 41, the reset time of the connecting seat 38 is shortened, thereby further improving the damping effect of the blade.

[0043] The implementation principle of the third embodiment of the present application is as follows: when the blade 1 vibrates, the mass frame 37 slides in the direction of the cross bar 36 to drive the swing frame 30 to swing, so that the screw nut 4 moves in the direction of the screw 3. Since the screw 3 and the screw nut 4 are threadedly connected, the screw 3 is driven to rotate during the movement of the screw nut 4. The rotation of the screw 3 drives the connecting shaft 34 and the third flywheel 35 to rotate synchronously. The end of the connecting shaft 34 facing away from the screw 3 is coaxially connected to the rotating shaft of the second damping motor 33, driving the second damping motor 33 to move and generate damping, thereby further enhancing the damping effect of the blade.

[0044] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A blade damper, characterized in that: The damper comprises a support frame (2) arranged on the inner surface of a blade (1), a screw rod (3) being arranged on the support frame (2), a screw rod nut (4) being threadedly connected to the outer edge of the screw rod (3), a mass unit being arranged on the screw rod nut (4), and the damper further comprises an adjustment unit for controlling the stroke of the mass unit.

2. The blade damper according to claim 1, characterized in that: The mass unit comprises a first transmission plate (5) arranged on a screw nut (4), a plurality of first mass blocks (6) being arranged on the first transmission plate (5), the first transmission plate (5) being connected to the blade (1) via a first limit assembly, the adjustment unit comprises a fixing frame (7) being arranged on the screw nut (4) and coaxially arranged with the screw nut (4), the fixing frame (7) passing through the first transmission plate (5) and being rotatably connected with the first transmission plate (5), a magnetic steel (8) being arranged on the fixing frame (7), a conductive ring (9) corresponding to the magnetic steel (8) being arranged on the surface of the first transmission plate (5) facing the magnetic steel (8), a plurality of first flywheel pieces (10) being arranged on the surface of the magnetic steel (8) facing away from the conductive ring (9), and the screw (3) passing through the plurality of first flywheel pieces (10), the magnetic steel (8) and the conductive ring (9) in sequence.

3. The blade damper according to claim 2, characterized in that: The first limiting assembly comprises two first support seats (11) arranged on the support frame (2), a first sliding rod (42) is arranged between the two first support seats (11), the first sliding rod (42) is arranged parallel to the screw rod (3), a first linear bearing seat (12) is slidably connected to the first sliding rod (42), and the first linear bearing seat (12) is arranged on the first transmission plate (5).

4. The blade damper according to claim 3, characterized in that: Two first compression springs (13) are sleeved on the outer edge of the first sliding rod (42), and the two first compression springs (13) are respectively located on both sides of the first linear bearing seat (12).

5. The blade damper according to claim 1, characterized in that: The mass unit comprises a second transmission plate (14) arranged on the screw nut (4), a plurality of second mass blocks (15) being arranged on the second transmission plate (14), two second support seats (16) being arranged on the support frame (2), the screw (3) being rotatably connected between the two support seats, the second transmission plate (14) being connected to the blade (1) via a second limit assembly, the adjustment unit comprises a mounting frame (17) arranged on the support frame (2), a first damping motor (18) being arranged on the mounting frame (17), both ends of the rotating shaft of the first damping motor (18) extending from the first damping motor (18), one end of the rotating shaft of the first damping motor (18) facing the screw (3) being coaxially connected to the screw (3), one end of the rotating shaft of the first damping motor (18) facing away from the screw (3) being fixedly sleeved with a plurality of second flywheel pieces (19), and an energy dissipation device for dissipating energy being connected to the first damping motor (18).

6. The blade damper according to claim 5, characterized in that: The second limiting assembly comprises two third support seats (20) and two fourth support seats (21) arranged on the support frame (2); a second slide bar (22) is arranged between the two third support seats (20); a third slide bar (23) is arranged between the two fourth support seats (21); the second slide bar (22) and the third slide bar (23) are arranged in parallel with the screw rod (3), and the screw rod (3) is located between the second slide bar (22) and the third slide bar (23); a second linear bearing seat (24) is slidably connected to the second slide bar (22); a third linear bearing seat (25) is slidably connected to the third slide bar (23); the second linear bearing seat (24) and the third linear bearing seat (25) are both arranged on the second transmission plate (14).

7. The blade damper according to claim 6, characterized in that: The outer edge of the second slide bar (22) is sleeved with two second compression springs (26), and the two second compression springs (26) are respectively located on both sides of the second linear bearing seat (24); the outer edge of the third slide bar (23) is sleeved with two third compression springs (27), and the two third compression springs (27) are respectively located on both sides of the third linear bearing seat (25).

8. The blade damper according to claim 1, characterized in that: The mass unit comprises two fifth support seats (28) arranged on the support frame (2), the screw rod (3) is rotatably connected between the two fifth support seats (28), the screw rod nut (4) is provided with a transmission frame (29), the support frame (2) is rotatably connected with a swing frame (30), the swing frame (30) is respectively provided with a first sliding hole (31) and a second sliding hole (32), the transmission frame (29) is slidably connected in the first sliding hole (31), the swing frame (30) is connected to the blade (1) through a third limit assembly, and the adjustment unit comprises a second damping motor (33) arranged on the support frame (2), one end of the screw rod (3) facing the second damping motor (33) is fixedly sleeved with a connecting shaft (34), the outer edge of the connecting shaft (34) is fixedly sleeved with a plurality of third flywheel pieces (35), and one end of the connecting shaft (34) facing the second damping motor (33) is coaxially connected to the rotating shaft of the second damping motor (33).

9. The blade damper according to claim 8, characterized in that: The third limiting assembly comprises a cross bar (36) arranged on the support frame (2), a mass frame (37) is slidably connected to the cross bar (36), the mass frame (37) is slidably connected in the second sliding hole (32), a connecting seat (38) is provided on the mass frame (37), two sixth supporting seats (39) are provided on the support frame (2), a fourth sliding bar (40) is provided between the two sixth supporting seats (39), the fourth sliding bar (40) passes through the connecting seat (38) and is slidably connected to the connecting seat (38), the screw rod (3), the cross bar (36) and the fourth sliding bar (40) are arranged in parallel, and two fourth compression springs (41) are sleeved on the outer edge of the fourth sliding bar (40), and the two fourth compression springs (41) are respectively located on both sides of the connecting seat (38).

10. The blade damper according to claim 9, characterized in that: The transmission frame (29) is rotatably connected to a first roller, and the swing frame (30) is provided with two first slide rails matching the first roller on a surface facing away from the transmission frame (29), and the first roller is rollingly connected between the two first slide rails. The mass frame (37) is rotatably connected to a surface facing the swing frame (30) and matching the two first slide rails, and the second roller is rollingly connected between the two first slide rails.

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