Semi-active tuned mass damper device for suppressing vibrations of a floating marine structure

Abstract

The application relates to the technical field of vibration control of floating ocean structures, in particular to a semi-active tuned mass control device for inhibiting vibration of a floating ocean structure, which comprises a counterweight, the one-side surface of which is provided with a connecting ring, and the lower end outer surface of which is semispherical; a tuning unit, which comprises a first ball head sleeve, a first ball head steel pole, an extension assembly, a first spring damper, a second ball head steel pole and a second ball head sleeve; and an auxiliary tuning unit, which is arranged below the counterweight and comprises a supporting disc, an arc groove opened in the one-side surface of the supporting disc, a supporting piece connected to one side of the supporting disc, a second spring damper connected to one side of the supporting piece and a driving piece connected to one end of the second spring damper. According to the device, the working state of the device can be adjusted in real time according to different vibration degrees of the floating ocean wind turbine, so that better vibration control effect can be realized, and the device is safe and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration control of floating ocean structures, and particularly relates to a semi-active tuned mass damper device for suppressing vibration of a floating ocean structure. BACKGROUND

[0002] With the development of energy and construction technology, ocean structures gradually move from the near sea to the deep sea. In the rapid development of wind power generation, offshore wind farms have more development potential and advantages than onshore wind farms. The wind speed, wind conditions and low-frequency noise in the marine environment are more suitable for the power output and operation of wind power equipment. At the same time, the energy supply of offshore equipment can also be solved nearby. Compared with fixed pile wind turbines, floating ocean wind turbines represented by pontoons, semi-submersibles and tension leg platforms are more suitable for deep sea environments in terms of economy, structural reliability and applicability. When the floating ocean wind turbine is operating, the base part is located underwater at a certain depth, which can effectively avoid the splash zone. However, the floating wind turbine is affected by the combined effects of wind and wave height changes. In addition to wind-induced vibration, the change in buoyancy of the structure caused by wave motion, wind blowing on the blades and drag operation will also generate overturning bending moments on the structure. Therefore, effective control of the vibration generated thereby can further provide a safe and stable use environment for the equipment and prolong the service life of the equipment.

[0003] Passive control, active control and semi-active control in vibration control have been widely used in ocean structures. However, the frequency of passive control devices is generally fixed, and the working state of the device cannot be adjusted in real time according to the actual vibration response of the structure, which is prone to control failure. Active control relies on actuators to apply energy to offset the dynamic response of the structure, which requires a large amount of mechanical energy to achieve the purpose of energy dissipation and vibration reduction, and the device is relatively complex. Therefore, in the complex marine environment, the use of a single vibration control technology has strong limitations for vibration control of floating ocean wind turbines, resulting in poor vibration control effect. SUMMARY

[0004] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification of the present application to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the problems existing in the prior art, the present application is proposed.

[0006] Therefore, the purpose of the present application is to provide a semi-active tuned mass damper device for suppressing vibration of a floating ocean structure, which aims to solve the problem that the existing floating ocean wind turbine uses a single vibration control technology, which has strong limitations for vibration control of the floating ocean wind turbine, resulting in poor vibration control effect.

[0007] To solve the above technical problems, the application provides the following technical scheme: a semi-active tuned mass control device for inhibiting vibration of a floating ocean structure, comprising a counterweight provided with a connecting ring on one side surface and having a semispherical outer surface at a lower end; a tuning unit connected to a side wall of the counterweight and comprising not less than three first ball head sleeves arranged uniformly in a circumferential direction on a surface of the side wall of the counterweight, a first ball head steel rod matched with the first ball head sleeves, an extension assembly connected to one end of the first ball head steel rod, a first spring damper arranged at one end of the extension assembly, a second ball head steel rod arranged at one end of the first spring damper, and a second ball head sleeve matched with the second ball head steel rod; and an auxiliary tuning unit arranged below the counterweight and comprising a support disc, an arc slot arranged on one side surface of the support disc, a support member connected to one side of the support disc, a second spring damper connected to one side of the support member, and a driving member connected to one end of the second spring damper.

[0008] As a preferred scheme of the semi-active tuned mass control device for inhibiting vibration of a floating ocean structure, the extension assembly comprises a limiting rod, a sliding groove arranged on one side surface of the limiting rod, a limiting groove arranged on one side of the limiting rod and communicating with the sliding groove, a rack arranged on one side of an inner wall of the limiting groove, a moving rod arranged in the sliding groove, and a clamping member arranged on one side of an outer wall of the moving rod, one end of the moving rod being connected to one end of the first ball head steel rod.

[0009] As a preferred scheme of the semi-active tuned mass control device for inhibiting vibration of a floating ocean structure, the clamping member comprises a gear arranged on one side surface of the moving rod, an arc-shaped limiting plate arranged on one side of the gear, two second fixed columns arranged on one side of the arc-shaped limiting plate, a clamping plate rotatably connected to an outer wall of the second fixed column, a spring connected to the clamping plate and the arc-shaped limiting plate, a screw nut arranged between the two clamping plates, a screw rod connected to the screw nut and penetrating through the arc-shaped limiting plate, and a first motor connected to one end of the screw rod, the gear and the rack being engaged with each other.

[0010] As a preferred scheme of the semi-active tuned mass control device for inhibiting vibration of a floating ocean structure, the support member comprises not less than three first concave plates arranged uniformly in a circumferential direction on one side surface of the support disc, a support arm arranged in an aperture of the first concave plate, and a second concave plate arranged on one end of an outer side of the support arm.

[0011] As a preferred solution of the semi-active tuned mass damper for inhibiting vibration of a floating marine structure, the driving member comprises a driving plate, not less than three track through-slots uniformly opened on one side surface of the driving plate, track columns slidably connected with inner walls of the track through-slots, a sliding plate connected with one end of the track columns, a cross slide rail plate arranged on one side of the driving plate, four limiting slide grooves opened in the cross slide rail plate, and four limiting track slots opened on one side surface of the cross slide rail plate, the limiting track slots being communicated with the limiting slide grooves, and the outer wall of the sliding plate being slidably connected with the inner wall of the limiting slide groove.

[0012] As a preferred solution of the semi-active tuned mass damper for inhibiting vibration of a floating marine structure, the driving member further comprises a driving column penetrating through the cross slide rail plate and connected with one side surface of the driving plate, one end of the driving column being connected with a second motor, and one side of the second motor being provided with a cross support frame.

[0013] As a preferred solution of the semi-active tuned mass damper for inhibiting vibration of a floating marine structure, the cross support frame, the cross slide rail plate and the second ball head sleeve are all connected with the inner wall of the tower.

[0014] As a preferred solution of the semi-active tuned mass damper for inhibiting vibration of a floating marine structure, the anti-falling unit arranged on one side of the counterweight comprises a fixed plate, fixed blocks arranged on one side of both ends of the fixed plate, a through groove opened on one side surface of the fixed block, rotating shafts rotatably connected in through holes opened on both sides of the through groove, a first circular groove and a second circular groove respectively opened on both sides of the fixed block, and the first circular groove and the second circular groove being communicated with the through groove.

[0015] As a preferred solution of the semi-active tuned mass damper for inhibiting vibration of a floating marine structure, the anti-falling unit further comprises a circular plate arranged in the first circular groove and connected with the rotating shafts, an arc-shaped convex plate, a limiting column and a centrifugal shaft arranged on one side surface of the circular plate, a clamping plate rotatably connected with the centrifugal shaft, a limiting hole opened on one side surface of the clamping plate, an irregular clamping plate arranged on the inner wall of the limiting hole, a clamping rack arranged on the outer wall of the clamping plate, a rack plate arranged on one side of the fixed block, an annular rack arranged on the inner wall of the through hole of the rack plate, and both ends of the cable being respectively connected with the outer walls of the rotating shafts.

[0016] As a preferred solution of the semi-active tuned mass damper for inhibiting vibration of a floating marine structure, a clockwork is arranged in the second circular groove, one end of the clockwork being connected with the outer wall of the rotating shaft, and the cable is penetrated into the through hole of the connecting ring.

[0017] The beneficial effects of the present application: realize the vibration control of the floating offshore wind turbine in six directions of surge, sway, heave, pitch, roll and yaw, the device is set in the wind turbine, which can not be disturbed by external wind, wave and flow; under the action of marine environmental load, according to the different degree of vibration of the wind turbine vibration form, the working state of the device is adjusted in real time, so as to realize better vibration control effect; by adding the anti-falling unit on the upper part of the counterweight block, the safety performance of the device under extreme working conditions is further ensured, the damage to the structure is reduced, and the whole device is more safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0019] Figure 1 It is the overall structure of the present application.

[0020] Figure 2 It is the structure diagram of the tuning unit of the present application.

[0021] Figure 3 It is the structure diagram of the present application Figure 2 at B.

[0022] Figure 4 , 5 It is the structure diagram of the auxiliary tuning unit of the present application.

[0023] Figure 6 It is the structure diagram of the anti-falling unit of the present application.

[0024] Figure 7 It is the structure diagram of the present application Figure 6 at A.

[0025] Figure 8 It is the structure diagram of the anti-falling unit of the present application.

[0026] Figure 9 It is the side view of the anti-falling unit of the present application. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0028] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details set forth in this description. In other instances, well-known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of the present application.

[0029] Second, the "one embodiment" or "an embodiment" appearing in the specification herein indicates a specific feature, structure, or characteristic included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification herein does not all refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments.

[0030] Third, the present application is described in detail in conjunction with the schematic drawings, and in the detailed description of the embodiments of the present application, the sectional view of the device structure is partially enlarged without the general proportion for the convenience of illustration, and the schematic drawings are only examples, which should not limit the scope of protection of the present application herein. In addition, the three-dimensional spatial dimensions of length, width, and depth should be included in actual production.

[0031] Embodiment 1

[0032] Reference Figures 1-3 For the first embodiment of the present application, a semi-active tuned mass control device for suppressing the vibration of a floating offshore structure is provided, and through the device, the working state of the device can be adjusted in real time according to different degrees of vibration received by the floating offshore wind turbine, so as to achieve better vibration control effect and safety and reliability.

[0033] Specifically, the counterweight 100 is provided with a connecting ring 101 on one side surface, and the outer surface of the lower end is semispherical.

[0034] The tuning unit 200 is connected to the side wall of the counterweight 100 and includes at least three first ball head sleeves 201 uniformly arranged on the surface of the side wall of the counterweight 100, a first ball head steel rod 202 matched with the first ball head sleeve 201, an extension assembly 203 connected to one end of the first ball head steel rod 202, a first spring damper 204 arranged at one end of the extension assembly 203, a second ball head steel rod 205 arranged at one end of the first spring damper 204, and a second ball head sleeve 206 matched with the second ball head steel rod 205.

[0035] The auxiliary tuning unit 300 is arranged below the counterweight 100 and includes a support disc 301, an arc groove 302 opened on one side surface of the support disc 301, a support piece 303 connected to one side of the support disc 301, a second spring damper 304 connected to one side of the support piece 303, and a driving piece 305 connected to one end of the second spring damper 304.

[0036] The counterweight 100 is arranged inside the fan tower, at the top end, or inside the nacelle, and the mass thereof is required to reach a certain proportion of the overall mass. The counterweight 100 is processed to form a partition, and the mass block can be divided into a plurality of small mass blocks by the partition. According to the specific requirements, the required number of small mass blocks is filled to change the system mass and facilitate the pre-adjustment of the frequency parameters. The mass of the counterweight 100 arranged can generate a reverse swing motion with the floating offshore wind turbine structure in the five directions of surge, sway, heave, roll, and pitch, generate an opposite inertia force acting on the main structure, thereby consuming vibration energy to achieve vibration control of the main structure. In order to facilitate the swing motion, the bottom is made into a curved surface.

[0037] The tuning unit 200 is used to limit the displacement of the counterweight 100 in each motion direction, prevent the counterweight 100 from exceeding the safe range when swinging, and impact the inner wall of the fan tower. At the same time, the first spring damper 204 arranged can provide motion damping and elastic restoring force for the counterweight 100, so that the counterweight 100 makes a reverse swing within a certain range, and transmits the reverse force to the fan main structure. The spherical hinge connecting device composed of the first ball head sleeve 201, the first ball head sleeve 201, the second ball head steel rod 205, and the second ball head sleeve 206 makes the motion direction of the counterweight 100 unrestricted. When the counterweight 100 responds to the longitudinal, lateral, longitudinal, lateral, and bowing motions of the fan main structure to make a reverse motion, the spherical hinge can make the first spring damper 204 only stretch or contract along the axial direction, which is beneficial to the work of the first spring damper and can help the counterweight 100 to swing in multiple directions. The telescopic assembly 203 is arranged, so that when the counterweight 100 needs to be adjusted in the vertical direction, it is not limited.

[0038] Further, the telescopic assembly 203 includes a limiting rod 203a, a sliding groove 203b opened on one side surface of the limiting rod 203a, a limiting groove 203c opened on one side of the limiting rod 203a and communicating with the sliding groove 203b, a rack 203d arranged on one side of the inner wall of the limiting groove 203c, a moving rod 203e arranged in the sliding groove 203b, and a clamping piece 203f arranged on one side of the outer wall of the moving rod. One end of the moving rod 203e is connected to one end of the first ball head steel rod 202.

[0039] Specific, one end of the limiting rod 203a is fixedly connected with one end of the first spring damper 204, one end of the moving rod 203e is fixedly connected with the first ball head steel rod 202, the inner wall of the sliding groove 203b of the limiting rod 203a is slidably connected with the outer wall of the moving rod 203e, and the opposite outer side wall of the moving rod 203e is provided with a protruding strip which is matched with the clamping groove provided on the opposite inner side wall of the sliding groove 203b, so as to better limit the moving rod 203e, and the limiting groove 203c provides movement space for the clamping piece 203f; the clamping piece 203f is provided, so that the moving rod 203e can move when needed, and then can be fixed, and no longer stretch.

[0040] Further, the clamping piece 203f includes a gear 203f-2 provided on one side of the outer surface of the moving rod 203e, an arc-shaped limiting plate 203f-3 provided on one side of the gear 203f-2, two second fixed columns 203f-4 provided on one side of the arc-shaped limiting plate 203f-3, a clamping plate 203f-5 rotatably connected to the outer wall of the second fixed column 203f-4, a spring 203f-6 connected to the clamping plate 203f-5 and the arc-shaped limiting plate 203f-3, a screw nut 203f-7 provided between the two clamping plates 203f-5, a screw rod 203f-8 connected to the screw nut 203f-7 and penetrating through the arc-shaped limiting plate 203f-3, and a first motor 203f-9 connected to one end of the screw rod 203f-8, and the gear 203f-2 is meshed with the rack 203d.

[0041] Specifically, the moving rod 203e is fixedly connected with a fixed shaft on the outer wall of one side close to the limiting groove 203c, the fixed shaft is rotatably connected with the gear 203f-2, the gear 203f-2 is meshed with the rack 203d, so that when the moving rod 203e moves, the gear 203f-2 is driven to move on the rack 203d, the arc-shaped limiting plate 203f-3 is close to the gear 203f-2, the two second fixed columns 203f-4 are rotatably connected with the clamping plate 203f-5, so that the clamping plate 203f-5 can limit the rotation of the gear 203f-2 when needed, the spring 203f-6 is provided, so that when the clamping plate 203f-5 is not subjected to external force, the spring 203f-6 can limit the movement of the gear 203f-2; the first motor 203f-9 drives the screw rod 203f-8 to rotate, and then the screw nut 203f-7 is displaced, so that the outer side wall of the screw nut 203f-7 presses the two clamping plates 203f-5, so that the clamping plates 203f-5 are away from the gear 203f-2, and finally the limitation of the movement of the gear 203f-2 is removed.

[0042] Embodiment 2

[0043] Reference Figures 1-5For the second embodiment of the present application, which is based on the first embodiment, the difference is that the height of the counterweight 100 can be adjusted by the auxiliary tuning unit 300, thereby changing the force angle and the length of the swing arm of the tuning unit 200, so that the counterweight 100 changes the three-dimensional damping and elastic recovery effect of the tuning unit 200 on the counterweight 100 at different heights, thereby achieving adjustment of the oscillation amplitude to change the energy consumption of the device, and then adjusting the damping effect of the device on the main structure of the wind turbine in different working conditions of the floating offshore wind turbine.

[0044] Specifically, the support member 303 includes not less than three first concave plates 303a circumferentially and uniformly arranged on one side surface of the support disc 301, a support arm 303b arranged in the gap of the first concave plate 303a, and a second concave plate 303c arranged on the outer side of one end of the support arm 303b.

[0045] The support disc 301 provides a place for the counterweight 100 to oscillate and bears the gravity load of the counterweight. In order to facilitate the oscillation of the counterweight 100, the surface thereof is made into a corresponding arc surface, and the curvature radius thereof is greater than that of the bottom arc surface of the counterweight 100 and slightly extends outward, thereby providing a support surface for the counterweight 100 when it oscillates and preventing the counterweight 100 from falling off the support disc 301. In order to facilitate the oscillation of the counterweight 100 on the support disc 301, the lower surface of the counterweight 100 and the upper surface of the support disc 301 can be made of asbestos, carbon-based friction materials, or other wear-resistant non-metallic materials to better cope with the corrosive marine environment, increase the service life of the device, and reduce the damage to the structural members.

[0046] The support member 301 is arranged to adjust the height of the support disc 301, thereby adjusting the height of the counterweight 100. Specifically, the lower surface of the support disc 301 is provided with four first concave plates 303a arranged in a circumferential array, and a gap is arranged below the first concave plates 303a, which can satisfy the rotational movement of the upper end of the support arm 303b in the gap and is connected by a movable pin. The second concave plate 303c is provided with a gap above it, which can satisfy the rotational movement of the lower end of the support arm 303b in the gap and is connected by a movable pin. The second concave plate 303c is fixedly connected to the upper side of the second spring damper 304, and the second spring damper 304 is arranged to provide damping and elastic recovery force in the vertical damping device to complete the vibration control of the heaving motion of the wind turbine.

[0047] Further, the driving member 305 comprises a driving plate 305a, not less than three track through slots 305b evenly opened in the side surface of the driving plate 305a, track columns 305c in sliding connection with the inner wall of the track through slots 305b, sliding plates 305d connected to one end of the track columns 305c, a cross slide rail plate 305e arranged on one side of the driving plate 305a, four limiting sliding grooves 305f opened in the cross slide rail plate 305e, and four limiting track slots 305g opened on the side surface of the cross slide rail plate 305e, the limiting track slots 305g being in communication with the limiting sliding grooves 305f, and the outer wall of the sliding plates 305d being in sliding connection with the inner wall of the limiting sliding grooves 305f.

[0048] The driving member 305 further comprises a driving column 305h penetrating through the cross slide rail plate 305e and connected to the side surface of the driving plate 305a, one end of the driving column 305h being connected with a second motor 305i, and one side of the second motor 305i being provided with a cross support frame 305j.

[0049] The cross support frame 305j, the cross slide rail plate 305e and the second ball head sleeve 206 are all connected to the inner wall of the tower drum 400.

[0050] Specifically, the driving member 305 provides power for the support member 303, four through track through slots 305b evenly arranged in a circumferential direction are opened on the upper surface of the driving plate 305a, and are in a circular arc shape, and the four track through slots 305b are all provided with track columns 305c in sliding connection with the inner wall thereof, when the driving plate 305a rotates, the inner side wall of the track through slot 305b will push the track column 305c to move, thereby pushing the support member 303 to move; the cross slide rail plate 305e provides support for the support member 303 and provides a movement track for the track column 305c, limiting sliding grooves 305f and limiting track slots 305g are opened on the four support arms thereof, the limiting track slots 305g are arranged above the limiting sliding grooves 305f and are in communication therewith, the inner wall of the limiting sliding groove 305f is in sliding connection with the outer wall of the sliding plate 305d, can limit the sliding plate 305d, the outer wall of the track column 305c is in sliding connection with the inner wall of the limiting track slot, and the lower end of the track column 305c is fixedly connected to the upper surface of the sliding plate 305d; the second motor 305i is a stepping motor, the output end thereof is fixedly connected with the driving column 305h, the driving column 305h drives the driving plate 305a to rotate, and the cross support frame 305j provides support for the second motor 305i.

[0051] In the specific implementation process, a double-axis inclination sensor is arranged on the upper surface of the counterweight 100, the amplitude of the swing of the counterweight 100 is detected, when the swing amplitude of the counterweight 100 is about to exceed the set dangerous value, information is transmitted to the controller, the controller is connected with the first motor 203f-9 and the second motor 305i, and the controller determines whether to start the first motor 203f-9 and the second motor 305i by judging the information.

[0052] In summary, the second motor 305i is started to drive the driving column 305h to rotate, and then drive the driving plate 305a to rotate. When the driving plate 305a rotates, the inner side wall of the track through slot 305b pushes the track column 305c to move, and then pushes the support piece 303 to shrink inwardly or open outwardly, so as to realize the up-down movement of the support disc 301, and then realize the up-down movement of the counterweight 100. Finally, the counterweight 100 changes the damping and elastic recovery effect of the tuning unit 100 on the counterweight 100 in the horizontal and vertical directions under different height conditions, so as to realize the adjustment of the swing amplitude, and then adjust the damping effect of the device on the main structure of the wind turbine under different working conditions of the floating offshore wind turbine.

[0053] Embodiment 3

[0054] With reference to Figure 1 and 6 ~9, which is a third embodiment of the present application, based on the second embodiment, the difference is that the setting of the anti-falling unit 500 is linked to the counterweight 100, which can prevent the counterweight 100 from swinging too fast and causing structural imbalance and damage to the tuning unit 200, and can also prevent the counterweight from falling.

[0055] Specifically, the anti-falling unit 500 is arranged on one side of the counterweight 100, and includes a fixed plate 501, a fixed block 502 arranged on one side of the outer wall of both ends of the fixed plate 501, a through groove 503 opened on one side surface of the fixed block 502, a rotating shaft 504 rotatably connected in the through hole opened on both sides of the through groove 503, a first circular groove 505 and a second circular groove 506 respectively opened on both sides of the fixed block 502, and the first circular groove 505 and the second circular groove 506 are communicated with the through groove 503.

[0056] The anti-falling unit 500 further includes a circular plate 507 arranged in the first circular groove 505 and connected with the rotating shaft 504, an arc-shaped convex plate 508, a limiting column 509 and a centrifugal shaft 518 arranged on one side surface of the circular plate 507, a clamping plate 510 rotatably connected with the centrifugal shaft 518, a limiting hole 511 opened on one side surface of the clamping plate 510, an irregular clamping plate 512 arranged on the inner wall of the limiting hole 511, a clamping rack 513 arranged on the outer wall of the clamping plate 510, a rack plate 514 arranged on one side of the fixed block 502, an annular rack 515 arranged on the inner wall of the through hole opened in the rack plate 514, and two rotating shafts 504 respectively connected with both ends of a cable 517.

[0057] A spring 516 is arranged in the second circular groove 506, one end of the spring 516 is connected with the outer wall of the rotating shaft 504, and the cable 517 penetrates into the through hole opened in the connecting ring 101.

[0058] Wherein, the fixed plate 501 is fixedly connected at both ends on the inner wall of the fan tower drum, the fixed block 502 is fixed on the lower surface of the fixed plate 501 and is located at both ends, the through slot 503 opened at the lower end of the fixed block 502 is used for accommodating the cable 517, the rotating shaft 504 is arranged, the cable 517 can be wound, the spring 516 and the circular plate 507 are fixedly connected at both ends of the rotating shaft 504 respectively, when the cable 517 is pulled, the rotating shaft 504 rotates, the spring 516 stores power, when the cable 517 is not forced, the spring 516 drives the rotating shaft 504 to rotate reversely, the cable 517 is wound, the rotating shaft 504 in the two fixed blocks 502 winds the two ends of the cable 517, and the cable 517 penetrates into the connecting ring 101; the cable 517 is pulled by the counterweight 100, so that the cable 517 pulls the rotating shaft 504 to rotate, and then drives the plate 507 to rotate; when the circular plate 507 rotates too fast, the clamping plate 510 generates centrifugal force under the action of the centrifugal shaft 518, then the clamping rack 513 is clamped with the annular rack 515, the clamping plate 512 abuts against the outer wall of the limiting column 509, finally the rotation of the rotating shaft 504 is limited, and the cable 517 is fixed.

[0059] In conclusion, the counterweight 100 is linked by the setting of the anti-falling unit 500, the swinging of the counterweight 100 is prevented from being too fast, the structure is prevented from being unbalanced, the tuning unit 200 is prevented from being damaged, and the falling of the counterweight is also prevented.

[0060] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various example embodiments are by way of illustration only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily understand that many modifications can be made (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be changed, or omitted, without materially affecting the operation of the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functions and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the example embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described in this disclosure, but extends to any embodiments that would still fall within the scope of the appended claims.

[0061] Furthermore, in the interest of providing a concise description of illustrative embodiments, not all features of an actual implementation can be described (that is, those not relevant to the presently contemplated best mode of practicing the application, or those not necessary for an understanding of the application).

[0062] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application, not to limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure, characterized by: The utility model relates to a tuning device for a tuning fork, which comprises a weight block (100) with a connecting ring (101) on one side surface and a semispherical lower end surface, a tuning unit (200) connected to the side wall of the weight block (100), an auxiliary tuning unit (300) arranged below the weight block (100), and a driving unit (305) connected to the second spring damper (304). The tuning unit (200) comprises not less than three first ball head sleeves (201) arranged uniformly on the side wall surface of the weight block (100), a first ball head steel rod (202) matched with the first ball head sleeve (201), an extension assembly (203) connected to one end of the first ball head steel rod (202), a first spring damper (204) arranged at one end of the extension assembly (203), a second ball head steel rod (205) arranged at one end of the first spring damper (204), and a second ball head sleeve (206) matched with the second ball head steel rod (205). The auxiliary tuning unit (300) comprises a support disc (301), an arc groove (302) opened on one side surface of the support disc (301), a support piece (303) connected to one side of the support disc (301), a second spring damper (304) connected to one side of the support piece (303), and a driving unit (305) connected to one end of the second spring damper (304). The driving unit (305) comprises a driving plate (305a), not less than three track through grooves (305b) opened uniformly on one side surface of the driving plate (305a), a track column (305c) slidingly connected with the inner wall of the track through groove (305b), a sliding plate (305d) connected to one end of the track column (305c), a cross slide rail plate (305e) arranged on one side of the driving plate (305a), four limiting slide grooves (305f) opened in the cross slide rail plate (305e), and four limiting track grooves (305g) opened on one side surface of the cross slide rail plate (305e), the limiting track grooves (305g) being communicated with the limiting slide grooves (305f), and the outer wall of the sliding plate (305d) being slidingly connected with the inner wall of the limiting slide grooves (305f). The track through groove (305b) is in the shape of a circular arc. The extension assembly (203) comprises a limiting rod (203a), a slide groove (203b) opened on one side surface of the limiting rod (203a), a limiting groove (203c) opened on one side of the limiting rod (203a) and communicated with the slide groove (203b), a rack (203d) arranged on one side of the inner wall of the limiting groove (203c), a moving rod (203e) arranged in the slide groove (203b), and a clamping piece (203f) arranged on one side of the outer wall of the moving rod (203e), one end of the moving rod (203e) being connected with one end of the first ball head steel rod (202).

2. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 1, characterized in that: ​ 3. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 2, characterized in that: The engaging piece (203f) comprises a gear (203f-2) arranged on one side of the outer surface of the moving rod (203e), an arc-shaped limiting plate (203f-3) arranged on one side of the gear (203f-2), two second fixing columns (203f-4) arranged on one side of the arc-shaped limiting plate (203f-3), a clamping plate (203f-5) rotationally connected to the outer wall of the second fixing column (203f-4), a spring (203f-6) connected to the clamping plate (203f-5) and the arc-shaped limiting plate (203f-3), a screw rod nut (203f-7) arranged between the two clamping plates (203f-5), a screw rod (203f-8) connected to the screw rod nut (203f-7) and penetrating through the arc-shaped limiting plate (203f-3), and a first motor (203f-9) connected to one end of the screw rod (203f-8), wherein the gear (203f-2) is engaged with the gear rack (203d).

4. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 3, characterized in that: The support piece (303) comprises not less than three first concave plates (303a) circumferentially and uniformly arranged on one side surface of the support disc (301), a support arm (303b) arranged in the gap of the first concave plate (303a), and a second concave plate (303c) arranged on the outer side of one end of the support arm (303b).

5. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 4, characterized in that: The driving piece (305) further comprises a driving column (305h) penetrating through the cross rail plate (305e) and connected to one side surface of the driving plate (305a), one end of the driving column (305h) is connected with a second motor (305i), and one side of the second motor (305i) is provided with a cross support frame (305j).

6. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 5, characterized in that: The cross support frame (305j), the cross rail plate (305e) and the second ball head sleeve (206) are all connected to the inner wall of the tower drum (400).

7. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 5 or 6, characterized in that: The anti-falling unit (500) is arranged on one side of the counterweight block (100) and comprises a fixed plate (501), fixed blocks (502) are arranged on one side of the outer wall of both ends of the fixed plate (501), a through groove (503) is formed in the side surface of one side of the fixed block (502), rotating shafts (504) are rotationally connected in the through holes formed in the inner walls of both sides of the through groove (503), a first circular groove (505) and a second circular groove (506) are respectively formed in both sides of the fixed block (502), and the first circular groove (505) and the second circular groove (506) are communicated with the through groove (503).

8. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 7, characterized in that: The anti-falling unit (500) further comprises a circular plate (507) arranged in the first circular groove (505) and connected with the rotating shaft (504), one side surface of the circular plate (507) is provided with an arc-shaped convex plate (508), a limiting column (509) and a centrifugal shaft (518), the centrifugal shaft (518) is rotatably connected with a clamping plate (510), one side surface of the clamping plate (510) is provided with a limiting hole (511), the inner wall of the limiting hole (511) is provided with an irregular clamping plate (512), the outer wall of the clamping plate (510) is provided with a clamping gear (513), one side of the fixed block (502) is provided with a gear plate (514), the annular gear (515) is arranged on the inner wall of the through hole of the gear plate (514), and the outer walls of the two rotating shafts (504) are respectively connected with two ends of a cable (517).

9. A semi-active tuned mass damper device for suppressing vibrations of a floating marine structure according to claim 8, characterized in that: A spring (516) is arranged in the second circular groove (506), one end of the spring (516) is connected with the outer wall of the rotating shaft (504), and the cable (517) penetrates the through hole of the connecting ring (101).

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