Tuning inerter damping device for tower drum of wind driven generator

Abstract

The utility model relates to the technical field of vibration damping devices, in particular to a wind driven generator tower tuning inerter vibration damping device which comprises a sliding support, the sliding support is mounted on a rest platform, and a mass block is slidably arranged on the sliding support in the horizontal direction; the counter-force frame assembly is fixedly connected to the rest platform, and an adjustable spring assembly and a liquid inerter damper assembly are connected between the counter-force frame assembly and the mass block; wherein the adjustable spring assembly and the liquid inerter damper assembly can rotate in the horizontal direction relative to the mass block and the reaction frame assembly, the adjustable spring assembly is used for buffering movement of the mass block in the horizontal direction, and the liquid inerter damper assembly is used for absorbing vibration of the mass block. According to the device, the damping effect of the device is improved through the amplification effect of inertial damping, the damping device can achieve balance of strong vibration energy with the small mass size, all the components of the device are supported to be disassembled and assembled, and installation and transportation are convenient.

Description

Technical Field

[0001] The present application relates to the technical field of vibration reduction devices, and in particular to a wind turbine tower tuned inertia vibration reduction device. Background Art

[0002] Vibration has a multifaceted impact on wind turbines (hereinafter referred to as wind turbines), primarily in terms of mechanical fatigue, safe operation, operating efficiency, and maintenance costs. First, vibration can cause mechanical fatigue in wind turbines. Key components such as wind turbine blades, towers, and rotors are susceptible to fatigue cracks and structural damage under long-term vibration. Wind turbine blades, in particular, are long and slender, making them susceptible to vibrations caused by aerodynamic excitation and wind speed fluctuations. Fatigue cracks are more likely to develop in stress-concentrated areas, reducing the wind turbine's service life and potentially leading to serious accidents such as blade breakage.

[0003] In the prior art, vibration reduction and damping devices are installed on the resting platform inside the wind turbine tower or other locations on the top of the tower to achieve the purpose of vibration reduction, such as tuned mass dampers (TMDs), tuned liquid dampers (TLDs), and tuned liquid column dampers (TLCDs). Tuned mass dampers (TMDs) typically use larger mass blocks to absorb vibration energy and are bulky. This not only increases the load-bearing burden on the wind turbine tower and fuselage, potentially requiring a strengthened structural design to withstand the additional weight, but also increases the difficulty of transportation and installation. In addition, the internal space of a wind turbine tower is limited, and large vibration reduction devices may not be installed on the resting platform or may occupy space for other important equipment. Utility Model Content

[0004] The technical problem to be solved by the present invention is that the existing vibration reduction device for balancing large vibration energy is bulky, which increases the load-bearing burden of the wind turbine tower and fuselage, resulting in poor vibration reduction effect.

[0005] To this end, the utility model provides a wind turbine tower tuning inertia vibration reduction device.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A wind turbine tower tuning inertia vibration reduction device, comprising:

[0008] A sliding support, the sliding support being mounted on the rest platform, and a mass block being provided on the sliding support for sliding in a horizontal direction;

[0009] A reaction frame assembly, wherein the reaction frame assembly is fixedly connected to the rest platform, and an adjustable spring assembly and a liquid inertia damper assembly are connected between the reaction frame assembly and the mass block;

[0010] Among them, both the adjustable spring assembly and the liquid inertia damper assembly can rotate horizontally relative to the mass block and the reaction frame assembly. The adjustable spring assembly is used to provide buffering for the horizontal movement of the mass block, and the liquid inertia damper assembly is used to absorb the vibration of the mass block.

[0011] Further, the liquid inertia damper assembly includes a main cylinder, a piston rod, a piston and a spiral tube. The piston is coaxially connected to the piston rod and is located inside the main cylinder. The piston rod is inserted into the main cylinder to drive the piston to move axially along the main cylinder. The piston divides the main cylinder into two independent chambers. The spiral tube is sleeved on the main cylinder, and the two ends of the spiral tube are respectively communicated with the two independent chambers inside the main cylinder. The inside of the main cylinder is filled with damping liquid, and the damping liquid reciprocates between the two independent chambers of the main cylinder and inside the spiral tube. When the mass block is in the natural state, the axis of the main cylinder is arranged along the radial direction of the mass block.

[0012] Further, the liquid inertia damper assembly further includes an auxiliary cylinder coaxially connected to the end of the main cylinder away from the piston rod. The piston rod is coaxially inserted into the main cylinder and extends through the main cylinder into the auxiliary cylinder. The end of the auxiliary cylinder away from the main cylinder is connected to the mass block through a pin shaft, and the end of the piston rod away from the auxiliary cylinder is connected to the reaction frame assembly through a pin shaft.

[0013] Further, the adjustable spring assembly includes an adjusting rotary seat, a spring and a fixed rotary seat. The spring is connected between the fixed rotary seat and the adjusting rotary seat. When the mass block is in the natural state, the axis of the spring is arranged along the radial direction of the mass block. One end of the fixed rotary seat away from the adjusting rotary seat is connected to the mass block through a pin shaft.

[0014] Further, a thread groove is provided on the outer side wall of the adjusting rotary seat, and the spring is embedded in the thread groove.

[0015] Further, the reaction frame assembly includes a reaction seat, a reaction end ear plate and a fixing block. The reaction seat is fixedly installed on the rest platform. The fixing block is rotatably connected to the reaction seat, and the adjusting rotary seat is connected to the fixing block.

[0016] Further, the reaction frame assembly further includes a fixing screw and a plurality of nuts. One end of the fixing screw is connected to the fixing block, and the other end passes through the adjusting rotary seat and is fastened with a nut.

[0017] Further, a plurality of the adjustable spring assemblies, the liquid inertia damper assemblies and the reaction frame assemblies are arranged circumferentially along the sliding support, and the numbers of the adjustable spring assemblies, the liquid inertia damper assemblies and the reaction frame assemblies are the same. One adjustable spring assembly is located between one reaction frame assembly and the mass block, and one liquid inertia damper assembly is located between one reaction frame assembly and the mass block.

[0018] Further, a fixing groove is provided on the sliding bracket, a boss is provided at the bottom of the mass block, the outer diameter of the boss is smaller than the inner diameter of the fixing groove, and the boss is embedded in the fixing groove.

[0019] Further, a plurality of bull's eye bearings are provided on the side wall of the sliding support facing the mass block.

[0020] The beneficial effect of the present utility model is that this application utilizes the amplification effect of the inertia capacitance damping to improve the vibration damping effect of the device. The design of the spiral tube helps to increase the effect of energy consumption. The length, material and inner diameter of the spiral tube will affect the frictional force and viscous resistance when the liquid flows. Thus, even if the mass block has a large displacement, under the action of the inertia capacitance damper, the vibration energy can be absorbed, and there is no need to use a large-volume mass block. This vibration damping device can achieve the balance of strong vibration energy with a small mass and volume, and each component of the device supports disassembly and assembly, and the weight and size of the components can be controlled, which is convenient for installation and transportation, and enhances the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 It is a schematic structural diagram of a tuned inertia capacitance vibration damping device for a wind turbine tower barrel in the present utility model.

[0023] Figure 2 It is a schematic structural diagram of the base in the present utility model.

[0024] Figure 3 It is a schematic structural diagram of the assembly relationship between the mass block and the sliding support in the present utility model.

[0025] Figure 4 It is a schematic structural diagram of the reaction frame assembly in the present utility model.

[0026] Figure 5 It is a schematic structural diagram of the adjustable spring assembly in the present utility model.

[0027] Figure 6 It is a schematic structural diagram of the liquid inertia capacitance damper assembly in the present utility model.

[0028] Figure 7 It is a schematic structural diagram of the tuned inertia capacitance vibration damping device when the mass block is in the natural state in the present utility model.

[0029] Figure 8 It is a schematic structural diagram of the tuned inertia capacitance vibration damping device when the mass block has displacement and rotation in the present utility model.

[0030] In the figure: 1. Base; 11. Sliding support; 12. Bull's-eye bearing; 13. Fixed groove; 14. Fixed hole; 2. Mass block; 21. Boss; 22. Connecting ear plate; 3. Adjustable spring assembly; 31. Adjusting rotary seat; 32. Spring; 33. Fixed rotary seat; 34. Threaded groove; 35. Through hole; 4. Liquid inertia damper assembly; 41. Main cylinder; 42. Sub-cylinder; 43. Piston rod; 44. Piston; 45. Helical tube; 5. Reaction frame assembly; 51. Reaction seat; 52. Reaction end ear plate; 53. Fixed block; 54. Fixed screw; 55. Nut; 56. Rotary bearing. Detailed implementation mode

[0031] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] Refer to Figure 1-8 , a tuned inertia damper device for a wind turbine tower, including a base 1, a mass block 2, an adjustable spring assembly 3, a liquid inertia damper assembly 4, and a reaction frame assembly 5.

[0035] The base 1 includes a sliding support 11 and a bull's-eye bearing 12. A fixing groove 13 is coaxially formed on the sliding support 11. Multiple fixing holes 14 are formed in the middle of the bottom of the fixing groove 13. The fixing holes 14 are threaded holes, which are convenient for fixing the base 1 on the rest platform of the wind turbine tower barrel through bolts. A plurality of bull's-eye bearings 12 are provided. The plurality of bull's-eye bearings 12 are circumferentially arranged on the top of the annular sliding support 11. The bull's-eye bearings 12 are bolted to the annular sliding support 11.

[0036] The mass block 2 is placed on the base 1. A boss 21 is coaxially provided at the lower part of the mass block 2. The outer diameter of the boss 21 is smaller than the inner diameter of the fixing groove 13. The boss 21 is embedded in the fixing groove 13. When the mass block 2 shakes greatly, the bull's-eye bearing 12 can reduce the friction between the mass block 2 and the sliding support 11, and the boss 21 will collide with the inner wall of the annular sliding support 11 to protect the mass block 2 from being thrown out.

[0037] A plurality of connecting ear plates 22 are bolted to the side wall of the mass block 2. In this application, two groups of connecting ear plates 22 are provided. Each group has four connecting ear plates 22. The four connecting ear plates 22 in each group are circumferentially arranged on the outer side wall of the mass block 2 and are on the same horizontal plane in the orthogonal direction. The two groups of connecting ear plates 22 are arranged vertically and oppositely. The connecting ear plate 22 located above is used to be connected to the adjustable spring assembly 3, and the connecting ear plate 22 located below is connected to the liquid inertia damper assembly 4.

[0038] Four adjustable spring assemblies 3, four liquid inertia damper assemblies 4, and four reaction frame assemblies 5 are provided. The four reaction frame assemblies 5 are circumferentially arranged around the sliding support 11. The reaction frame assemblies 5 are fixedly installed on the rest platform. An adjustable spring assembly 3 is connected to a connecting ear plate 22 located above and is located between a reaction frame assembly 5 and the mass block 2. The liquid inertia damper assembly 4 is arranged between the mass block 2 and the reaction seat 51. A liquid inertia damper assembly 4 is connected to a connecting ear plate 22 located below on the mass block 2. The adjustable spring assembly 3 and the liquid inertia damper assembly 4 can rotate horizontally relative to the mass block 2 and the reaction frame assembly 5.

[0039] The adjustable spring assembly 3 includes an adjusting rotary seat 31, a spring 32, and a fixed rotary seat 33. One end of the fixed rotary seat 33 is provided with an earring, and the earring is connected to the connecting ear plate 22 on the mass block 2 through a pin shaft. One end of the spring 32 is sleeved on the fixed rotary seat 33, and the other end is sleeved on the adjusting rotary seat 31. When the spring 32 is in the natural state, the adjusting rotary seat 31 and the fixed rotary seat 33 are coaxially arranged. A thread groove 34 is provided on the outer side wall of the adjusting rotary seat 31, and the spring 32 is embedded in the thread groove 34. On the one hand, the spring 32 can be fixed, and on the other hand, by rotating the adjusting rotary seat 31, the effective number of turns of the spring 32 can be adjusted, so as to achieve the purpose of adjusting the stiffness of the spring 32 and controlling its natural vibration frequency. In other embodiments, a thread groove 34 can also be opened on the outer side wall of the fixed rotary seat.

[0040] It should be noted that the device can control the effective number of turns of the spring 32 between the fixed rotary seat 33 and the adjusting rotary seat 31 by adjusting the engagement length between the spring 32 and the adjusting rotary seat 31, so as to adjust the stiffness of the spring 32 and realize the adjustment of the natural vibration frequency of the device, so that the device reaches the best shock absorption effect. The calculation formula of the spring 32 stiffness is as follows. The effective number of turns N represents the number of turns actually participating in deformation in the spring 32, and is inversely proportional to the spring 32 stiffness. The more the effective number of turns, the smaller the spring 32 stiffness; the fewer the effective number of turns, the greater the spring 32 stiffness.

[0041]

[0042] Where: k represents the spring 32 stiffness; G represents the shear modulus, which is related to the spring 32 material; d represents the diameter of the spring 32 wire; D is the mean diameter of the spring 32, that is, the average diameter of the spring 32; N is the effective number of turns, that is, the number of turns of the spring 32 actually participating in deformation.

[0043] The reaction frame assembly 5 includes a reaction seat 51, a reaction end ear plate 52, a fixing block 53, a fixing screw 54, and a plurality of nuts 55. The reaction seat 51 is connected to the rest platform through a screw. The fixing block 53 is connected to the top of the reaction seat 51 through a rotary bearing 56, and the fixing block 53 can rotate in the horizontal plane. One end of the fixing screw 54 passes through the fixing block 53 and is threadedly connected to the fixing block 53 and fixed with a nut 55. A through hole 35 is coaxially arranged on the adjusting rotary seat 31. The through hole 35 is a threaded hole. The other end of the fixing screw 54 is inserted into the adjusting rotary seat 31 and threadedly connected to the adjusting rotary seat 31 through the threaded hole, and is fastened with a nut 55.

[0044] The liquid inertance damper assembly 4 includes a main cylinder 41, a secondary cylinder 42, a piston rod 43, a piston 44, and a helical tube 45. The main cylinder 41 is threadedly connected to the secondary cylinder 42 coaxially. The piston 44 is located inside the main cylinder 41 and is sealingly arranged with the inner side wall of the main cylinder 41. The piston 44 divides the main cylinder 41 into two chamber spaces. The piston 44 is coaxially connected to the piston rod 43 and can slide axially relative to the main cylinder 41 along with the piston rod 43. The piston rod 43 and the piston 44 are integrally connected. The helical tube 45 is sleeved on the main cylinder 41, and the two ends of the helical tube 45 are respectively communicated with two independent chambers inside the main cylinder 41. The inside of the main cylinder 41 is filled with damping liquid, and the damping liquid reciprocally flows in the two independent chambers of the main cylinder 41 and the helical tube 45. Specifically, a circular hole is radially opened at each end of the main cylinder 41 close to the two ends, and the helical tube 45 connects the two circular holes on the main cylinder 41 through welding. When the piston 44 moves back and forth along the main cylinder 41, one of the cavities will be squeezed, causing the damping liquid to flow along the helical tube 45 to the other cavity.

[0045] A connecting earring is provided at one end of the piston rod 43 away from the main cylinder 41. A reaction end ear plate 52 is connected to the reaction seat 51. The connecting earring on the piston rod 43 and the reaction end ear plate 52 are hinged through a pin shaft, and the piston rod 43 can rotate horizontally relative to the reaction seat 51. An earring is provided at one end of the secondary cylinder 42 away from the main cylinder 41 and is hinged to the lower connecting ear plate 22 on the mass block 2 through a pin shaft.

[0046] When the mass block 2 is in the natural state, the center P point of the mass block 2 coincides with the center of the sliding support 11. Figure 7 The dotted circle in [reference] is a circle centered on the axis of the sliding support 11. The axial direction of the spring 32 is arranged along the radial direction of the mass block 2, and the axial direction of the main cylinder 41 is arranged along the radial direction of the mass block 2.

[0047] The implementation principle of this application is as follows:

[0048] When the main structure is excited externally and starts to vibrate and the vibration frequency is close to the natural vibration frequency of the device, the mass block 2 starts to vibrate. A bull's-eye bearing 12 is provided between the annular sliding support 11 and the mass block 2. Utilizing its spherical rolling characteristics, the mass block 2 can achieve a 360° movement in the horizontal direction. The liquid inertance damper is connected to both the mass block 2 and the reaction frame assembly 5 through ear plates and pin shafts. On the one hand, it can connect the components to each other and play a fixing role, enabling the liquid inertance damper assembly 4 and the adjustable spring assembly 3 to move along with the mass block 2. On the other hand, the existence of the pin shaft allows the liquid inertance damper to rotate along with the mass block 2, driving the piston 44 in the liquid inertance damper to reciprocate in the main cylinder 41 and squeezing the damping liquid in the main cylinder 41 to flow in the helical tube 45.

[0049] Take Figure 7Taking the top view perspective as an example, when the mass block only has translational motion, the mass block moves to the right, driving the rotary bearings on both the upper and lower sides to rotate; the springs on the left side and the upper and lower sides are stretched, and the spring on the right side is compressed. At the same time, the extended parts of the piston rods on the left side and the upper and lower sides become longer, and the piston rod on the right side contracts. When the piston rod moves, it drives the piston to squeeze the damping fluid in the main cylinder to flow in the spiral tube, thereby dissipating energy.

[0050] For example Figure 8 As shown in Figure 8 , when the motion state of the mass block 2 is translational plus rotational, the axis of the mass block 2 moves to point P', and the adjustable spring assembly 3 and the liquid inertia damper move accordingly.

[0051] Among them, during the flow of the damping fluid, the interaction between its internal molecules generates friction, and the viscous resistance converts part of the mechanical energy into heat energy, thereby dissipating the vibration energy. This process mainly depends on the viscosity of the damping fluid and the design of the flow path. The higher the viscosity of the damping fluid, the greater the viscous resistance during flow, and the better the energy dissipation effect. Selecting a damping fluid with an appropriate viscosity can significantly improve the damping effect. The spiral tube 45 makes the liquid flow path longer, increasing the friction and viscous resistance, thereby significantly improving the energy consumption effect. At the same time, changing the inner diameter and material of the spiral tube 45 will affect the friction and viscous resistance when the liquid flows. The smaller the inner diameter of the spiral tube 45 and the higher the surface roughness of the inner surface, the greater the resistance when the liquid flows, thereby increasing the energy consumption. In addition, the larger the area of the piston 44, the more liquid it pushes when moving, and the greater the damping force generated.

[0052] At the same time, the fixed rotating seat 33 of the adjustable spring assembly 3 is connected to the mass block 2 through an ear plate and a pin shaft, and the adjusting rotating seat 31 is connected to the reaction force frame assembly 5 through a fixing screw 54 and a nut 55. The pin shaft and the rotary bearing 56 in the reaction force frame assembly 5 ensure that the adjustable spring assembly 3 can rotate. Threaded grooves 34 for fixing the spring 32 are provided on the surfaces of the fixed rotating seat 33 and the adjusting rotating seat 31. At the same time, the effective number of turns of the spring 32 between the fixed rotating seat 33 and the adjusting rotating seat 31 can be controlled by adjusting the biting length between the spring 32 and the adjusting rotating seat 31, thereby adjusting the stiffness of the spring 32 and realizing the adjustment of the natural vibration frequency of the device. During the vibration process, the spring 32 will be compressed or stretched, thereby generating an elastic restoring force, enabling the mass block 2 to perform a tuning motion along with the vibration of the structure.

[0053] This application utilizes the amplification effect of inerter damping to enhance the vibration damping effect of the device. In addition, in other embodiments, the performance of the device in a low-temperature environment can be improved by adding an appropriate proportion of antifreeze to the damping liquid. The design of the spiral tube 45 helps to increase the effect of energy consumption. The length, material, and inner diameter of the spiral tube 45 affect the frictional force and viscous resistance during liquid flow. In addition, the spiral tube 45 with different inner surface roughnesses of different materials also affects the frictional force. The higher the inner surface roughness, the greater the frictional force during liquid flow, thereby increasing energy consumption.

[0054] This application utilizes the rolling characteristics of the bull's-eye bearing 12, enabling the mass block 2 to move freely 360° in the horizontal direction, thereby controlling horizontal vibrations in all directions.

[0055] All components of the device support disassembly and assembly, allowing the weight and size of the components to be controlled, facilitating installation and transportation, and enhancing the applicability of the device.

[0056] Inspired by the ideal embodiments of the present utility model described above, through the above description, relevant staff can, without departing from the technical idea of the present utility model, make various changes and modifications. The technical scope of the present utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A tuned inertial mass damper device for a wind turbine tower, characterized in that including, a sliding support (11) which is installed on a landing platform, and a mass block (2) is slidably arranged on the sliding support (11) in the horizontal direction; a reaction frame assembly (5) which is fixedly connected to the landing platform, and an adjustable spring assembly (3) and a liquid inertia damper assembly (4) are connected between the reaction frame assembly (5) and the mass block (2); wherein, the adjustable spring assembly (3) and the liquid inertia damper assembly (4) can both rotate relative to the mass block (2) and the reaction frame assembly (5) in the horizontal direction, the adjustable spring assembly (3) is used to provide buffering for the horizontal movement of the mass block (2), and the liquid inertia damper assembly (4) is used to absorb the vibration of the mass block (2).

2. The tuned inertial mass damper device for a wind turbine tower barrel according to claim 1, characterized in that The liquid inertia damper assembly (4) includes a main cylinder (41), a piston rod (43), a piston (44) and a spiral tube (45). The piston (44) is coaxially connected to the piston rod (43) and is located inside the main cylinder (41). The piston rod (43) is inserted into the main cylinder (41) to drive the piston (44) to move axially along the main cylinder (41). The piston (44) divides the main cylinder (41) into two independent chambers. The spiral tube (45) is sleeved on the main cylinder (41), and two end parts of the spiral tube (45) are respectively communicated with the two independent chambers inside the main cylinder (41). The inside of the main cylinder (41) is filled with damping liquid, and the damping liquid reciprocally flows in the two independent chambers of the main cylinder (41) and the spiral tube (45). When the mass block (2) is in a natural state, the axis of the main cylinder (41) is arranged along the radial direction of the mass block (2).

3. The tuned inertia mass damper device for a wind turbine tower according to claim 1, wherein The liquid inertia damper assembly (4) further includes an auxiliary cylinder (42) coaxially connected to one end of the main cylinder (41) away from the piston rod (43). The piston rod (43) is coaxially inserted into the main cylinder (41) and penetrates through the main cylinder (41) and extends into the auxiliary cylinder (42). The end of the auxiliary cylinder (42) away from the main cylinder (41) is connected to the mass block (2) through a pin shaft, and the end of the piston rod (43) away from the auxiliary cylinder (42) is connected to the reaction frame assembly (5) through a pin shaft.

4. The tuned inertial mass damper device for a wind turbine tower according to claim 2, characterized in that, The adjustable spring assembly (3) includes an adjusting rotary seat (31), a spring (32) and a fixed rotary seat (33). The spring (32) is connected between the fixed rotary seat (33) and the adjusting rotary seat (31). When the mass block (2) is in a natural state, the axis of the spring (32) is arranged along the radial direction of the mass block (2). One end of the fixed rotary seat (33) away from the adjusting rotary seat (31) is connected to the mass block (2) through a pin shaft.

5. The tuned inertial mass damper device for a wind turbine tower according to claim 4, characterized in that, A thread groove (34) is arranged on the outer side wall of the adjusting rotary seat (31), and the spring (32) is embedded in the thread groove (34).

6. The tuned inertial mass damper device for a wind turbine tower according to claim 4, characterized in that, The reaction frame assembly (5) includes a reaction seat (51), a reaction end ear plate (52) and a fixing block (53). The reaction seat (51) is fixedly installed on the rest platform. The fixing block (53) is rotatably connected to the reaction seat (51), and the adjusting rotary seat (31) is connected to the fixing block (53).

7. The tuned inertial mass damper device for a wind turbine tower according to claim 6, wherein The reaction frame assembly (5) further includes a fixing screw (54) and a plurality of nuts (55). One end of the fixing screw (54) is connected to the fixing block (53), and the other end passes through the adjusting rotary seat (31) and is fastened with the nut (55).

8. The tuned inertial mass damper device for a wind turbine tower according to claim 1, characterized in that, A plurality of the adjustable spring assemblies (3), the liquid inertia damper assemblies (4) and the reaction frame assemblies (5) are arranged circumferentially along the sliding support (11), and the numbers of the adjustable spring assemblies (3), the liquid inertia damper assemblies (4) and the reaction frame assemblies (5) are the same. One adjustable spring assembly (3) is located between one reaction frame assembly (5) and the mass block (2), and one liquid inertia damper assembly (4) is located between one reaction frame assembly (5) and the mass block (2).

9. The tuned inertial mass damper device for a wind turbine tower according to claim 1, characterized in that, A fixing groove (13) is provided on the sliding support (11). A boss (21) is provided at the bottom of the mass block (2). The outer diameter of the boss (21) is smaller than the inner diameter of the fixing groove (13), and the boss (21) is embedded in the fixing groove (13).

10. The tuned inertial mass damper device for a wind turbine tower according to claim 9, characterized in that, A plurality of bull's eye bearings (12) are provided on the side wall of the sliding support (11) facing the mass block (2).

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