CN116446711A - Self-resetting energy-consumption amplifying type eddy current damper based on combined pull rod - Google Patents
Self-resetting energy-consumption amplifying type eddy current damper based on combined pull rod Download PDFInfo
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- 239000002131 composite material Substances 0.000 claims 2
- 238000013016 damping Methods 0.000 abstract description 13
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- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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Abstract
The invention provides a self-resetting energy-consumption amplifying type eddy current damper based on a combined pull rod, which comprises a connecting assembly, a rotary matching assembly and a magnetic eddy current assembly, wherein the connecting assembly comprises a first connecting piece and a second connecting piece; the rotary matching assembly comprises two rotary parts and two connecting rods, each rotary part is provided with a connecting end and a rotating end, one end of each connecting rod is respectively hinged to the first connecting part or the second connecting part, and the other end of each connecting rod is correspondingly hinged to the connecting end of each rotary part; the magnetic vortex assembly comprises first magnetic pieces and second magnetic pieces, wherein the first magnetic pieces are respectively arranged at two rotating ends, and the second magnetic pieces are arranged on the connecting assembly at intervals and correspond to the first magnetic pieces. The invention provides a self-resetting energy-consumption amplifying type eddy current damper based on a combined pull rod, and aims to solve the problems that a vibration damper in the prior art is limited in energy consumption, inconvenient to adjust damping force and does not have self-resetting capability.
Description
Technical Field
The invention relates to the technical field of dampers, in particular to a self-resetting energy-consumption amplifying type eddy current damper based on a combined pull rod.
Background
With the development of the economy of China, the whole electricity consumption requirement of China is larger and larger, and in order to realize long-distance and large-span power transmission, the height of the power high-rise structure is also higher and higher. However, under the action of natural disasters such as strong wind and earthquake, the power towering structure is easy to vibrate, and particularly for an ultra-high voltage transmission tower, if the structure vibrates too much, bolts are loosened, members are fatigued and even damaged, and collapse of the transmission tower can be caused to cause paralysis of the whole transmission line. Therefore, it is necessary to install a certain vibration damping device on the power towering structure to consume vibration energy, thereby reducing the vibration response of the structure and prolonging the life of the power towering structure.
According to the working principle, the structural vibration control can be roughly divided into: passive control, active control, semi-active control, and hybrid control. The passive control system has the most wide application, and has a simple structure and does not depend on external energy sources, so that the application scene is greatly increased. The common passive control device mainly comprises a viscoelastic damper, a viscous damper, a friction damper, an eddy current damper and the like, and the conventional passive control device solves the problem of vibration of the conventional structure to a certain extent, but still has the following problems:
1. the energy consumption material used by the traditional viscoelastic damper is mainly high molecular polymer such as rubber, and the performance of the energy consumption material is reduced at the extreme temperature of the outdoor, so that the energy consumption requirement cannot be met, and the energy consumption material is not suitable for vibration control of an electric power high-rise structure;
2. the viscous damper is easy to leak due to the fact that the pressure in the chamber is high, and viscosity of viscous liquid of the damper is reduced under the outdoor extremely low-temperature condition, so that energy consumption capacity of the viscous damper is greatly reduced, and the viscous damper is not suitable for vibration control of an electric power high-rise structure;
3. the traditional friction damper requires larger positive pressure, is extremely easy to cause damage of friction materials, and requires multiple maintenance in the later period, so that the traditional friction damper is not suitable for vibration control of an electric power high-rise structure;
4. the traditional eddy current damper has limited energy consumption, inconvenient damping force adjustment and no self-resetting capability, so that the residual deformation of the structure after earthquake is obvious, and the long-term use of the structure is affected.
Disclosure of Invention
The invention provides a self-resetting energy-consumption amplifying type eddy current damper based on a combined pull rod, and aims to solve the problems that the energy consumption of a vibration damper is limited, the damping force is inconvenient to adjust and the self-resetting capability is not available in the traditional technology.
Aiming at the problems existing in the prior art, the invention provides a self-resetting energy-consumption amplifying type eddy current damper based on a combined pull rod, which comprises the following components:
the connecting assembly comprises a first connecting piece and a second connecting piece which are arranged at intervals, wherein the first connecting piece and the second connecting piece are both used for being connected with a structural object, and the first connecting piece and the second connecting piece are arranged to be mutually close to or far away from each other along with the vibration of the structural object;
the rotary matching assembly comprises two rotary pieces and two connecting rods, wherein the two rotary pieces are connected to the connecting assembly in a rotary mode and are arranged in a partially laminated mode, each rotary piece is provided with a connecting end close to the other rotary piece and a rotating end far away from the other rotary piece, one end of each connecting rod is hinged to the first connecting piece or the second connecting piece respectively, and the other end of each connecting rod is hinged to the connecting end of each rotary piece correspondingly; the method comprises the steps of,
the magnetic vortex assembly comprises first magnetic pieces and second magnetic pieces, the first magnetic pieces are respectively arranged at two rotating ends, the second magnetic pieces are arranged on the connecting assembly at intervals and correspond to the first magnetic pieces, one of the first magnetic pieces and the second magnetic piece is set as a conductor, the other one of the first magnetic piece and the second magnetic piece is set as a magnet, the magnetic vortex assembly is used for generating electric vortex according to the relative movement of the first magnetic piece and the second magnetic piece, and then radiating, energy consumption and vibration reduction are realized through the resistance effect of the conductor.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, each rotating piece is provided with a rotating center, and the linear distance between the rotating end of each rotating piece and the rotating center is larger than that between the corresponding connecting end and the rotating center.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, each rotating piece comprises a diamond-like rotating piece, the connecting end of each diamond-like rotating piece is provided with two adjacent and equal first adjacent edges, the rotating end is provided with two adjacent and equal second adjacent edges, the first adjacent edges and the second adjacent edges are arranged in parallel, and the length of the first adjacent edges is smaller than that of the second adjacent edges.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, the diagonal intersection point of the diamond-like rotary piece coincides with the rotation center.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, the connecting assembly comprises the elastic piece arranged between the first connecting piece and the second connecting piece, and the elastic piece is used for enabling the first connecting piece and the second connecting piece to be restored to the original positions after being mutually close to or far away from each other along with the vibration of the structural object.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, the elastic piece comprises a spring, elastic ribs or an SMA rod.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, the elastic piece comprises four SMA rods which are respectively connected with the first connecting piece and the second connecting piece, the four SMA rods are respectively arranged on two sides of the first connecting piece and the second connecting piece, and the rotating plate and the connecting rod are both positioned in gaps formed by the four SMA rods.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, the connecting assembly comprises a rotating shaft arranged between the first connecting piece and the second connecting piece and protection plates respectively arranged at two ends of the rotating shaft, the two rotating pieces are both connected to the rotating shaft in a rotating mode, and the second magnetic pieces are respectively arranged at the end portions of the protection plates.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, the first magnetic piece is a permanent magnet, the second magnetic piece is a conductor plate, the permanent magnet is square, and the conductor plate is correspondingly arc-shaped.
According to the self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod, one permanent magnet is arranged on two sides of each rotating end, four conductor plates are correspondingly arranged and are respectively arranged at two ends of two protection plates, and the thickness of each permanent magnet is changed, so that the distances between the permanent magnet and the corresponding conductor plates are equal.
The self-resetting energy-consumption amplification type eddy current damper based on the combined pull rod provided by the invention has the advantages that the first connecting piece and the second connecting piece of the connecting assembly can be directly connected with the structures such as the power transmission tower through bolts, and the installation is convenient and simple; the rotary matching assembly adopts the principle of lever motion, and when the first connecting piece and the second connecting piece move along with the vibration of the structure, the first magnetic piece and the second magnetic piece can generate relative displacement, so that the purpose of vibration reduction and energy consumption is achieved by generating electric vortex; because the non-contact structure is adopted, the first magnetic part and the second magnetic part are not contacted with each other, oil leakage or component abrasion and other phenomena are avoided, the post-maintenance is convenient and quick, and the economic efficiency is remarkable.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first sectional view of a self-resetting energy-consuming amplifying type eddy current damper based on a combined pull rod;
FIG. 2 is a schematic diagram of a second cross-sectional structure of the self-resetting energy-consuming amplifying type eddy current damper based on the combined pull rod;
FIG. 3 is a schematic top view of a self-resetting energy-dissipation amplifying type eddy current damper based on a combined pull rod;
FIG. 4 is a schematic side view structure of a self-resetting energy-consuming amplifying type eddy current damper based on a combined pull rod;
fig. 5 is a schematic structural diagram of the self-resetting energy-consumption amplifying type eddy current damper based on the combined pull rod when the invention is applied to a power transmission tower;
reference numerals: 10: self-resetting energy-consumption amplifying type eddy current damper based on combined pull rod; 100: a connection assembly; 110: a first connector; 120: a second connector; 130: an SMA rod; 140: a rotation shaft; 150: a protective plate; 200: a rotating mating assembly; 210: a rotating member; 211: a connection end; 212: a rotating end; 220: a connecting rod; 300: a magnetic eddy current assembly; 310: a first magnetic member; 311: a permanent magnet; 320: a second magnetic member; 321: and a conductor plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The self-resetting energy-consumption amplifying type eddy current damper 10 based on the combined pull rod provided by the invention is described below with reference to fig. 1 to 5.
In order to solve the problems of limited energy consumption, inconvenient damping force adjustment and no self-resetting capability of the vibration damper in the prior art, the invention provides a self-resetting energy consumption amplification type eddy current damper 10 based on a combined pull rod, which comprises a connecting assembly 100, a rotary matching assembly 200 and a magnetic eddy current assembly 300.
The connection assembly 100 includes a first connection member 110 and a second connection member 120 that are disposed at intervals, wherein the first connection member 110 and the second connection member 120 are both used for connecting with a structure, and the first connection member 110 and the second connection member 120 are disposed so as to be capable of approaching to or separating from each other along with vibration of the structure; referring to fig. 5, the average height of the extra-high voltage transmission tower in the power high-rise structure exceeds 100 meters, the extension arm length of the cross arm is generally about 50 meters, the structure of the tower body is large at the top and small at the bottom, and the main load is concentrated at the upper part of the tower, so that the amplitude of the tower top is generally maximum. When the self-resetting energy-consumption amplifying type eddy current damper 10 based on the combined pull rod is used, the electric eddy current damper needs to be connected between two vertical arms at the top end of the extra-high voltage transmission tower through the first connecting piece 110 and the second connecting piece 120. When the extra-high voltage transmission tower vibrates under the action of external force, the first connecting piece 110 and the second connecting piece 120 are close to or far away from each other under the drive of two vertical arms of the extra-high voltage transmission tower;
the rotary matching assembly 200 comprises two rotary members 210 and two connecting rods 220, wherein the two rotary members 210 are rotatably connected to the connecting assembly 100 and are partially overlapped, so that each rotary member 210 has a connecting end 211 close to the other rotary member 210 and a rotating end 212 far from the other rotary member 210; correspondingly, one end of each connecting rod 220 is hinged to the first connecting piece 110 or the second connecting piece 120 respectively, and the other end of each connecting rod 220 is hinged to the connecting end 211 of each rotating piece 210 respectively; when the extra-high voltage transmission tower vibrates under the action of external force, the first connecting piece 110 and the second connecting piece 120 can generate relative motion, so that a pull rod on the extra-high voltage transmission tower is driven to move, and further the two rotating pieces 210 are driven to swing, and the conversion from vibration to displacement is achieved;
the magnetic eddy current assembly 300 includes a first magnetic element 310 and a second magnetic element 320, wherein the first magnetic element 310 is respectively disposed at two rotating ends 212, the second magnetic element 320 is disposed on the connecting assembly 100 at intervals and corresponds to each first magnetic element 310, one of the first magnetic element 310 and the second magnetic element 320 is a conductor, and the other is a magnet. As described above, the two rotating members 210 rotate, and during the rotation of the two rotating members 210, the first magnetic member 310 and the second magnetic member 320 generate relative motion, so that induced eddy currents are generated in the conductor, and the induced eddy currents generate electromagnetic damping to block the relative motion between the first magnetic member 310 and the second magnetic member 320 due to the opposite magnetic field direction of the induced eddy currents and the magnetic field direction of the magnet. Along with the relative movement of the first magnetic element 310 and the second magnetic element 320, the electric vortex is converted into heat energy due to the resistance action of conductors in the two, so that the purposes of vibration reduction and energy consumption are achieved.
Further, each rotating member 210 has a rotation center, and the linear distance from the rotation end 212 of each rotating member 210 to the rotation center is greater than the linear distance from the corresponding connecting end 211 to the rotation center. It should be noted that, the rotating fitting assembly 200 may be equivalently referred to as a lever, where the fulcrum is the rotation center of the lever, and the rotation radius extending from the rotation center is the arm of force. Because the rotation arm of the rotating end 212 is several times that of the connecting end 211, the horizontal displacement of the pull rod can be amplified several times, so that the rotating plate generates larger rotation displacement, and the first magnetic element 310 and the second magnetic element 320 are driven to generate larger relative movement, thereby increasing energy consumption. It should be noted that the rotating force arm of the rotating end 212 may be equal to the rotating force arm of the connecting end 211, so that the eddy current vibration damping effect can still be achieved, and only the rotating force arm is unequal, so that the overall vibration damping effect of the device can be improved.
It should be noted that the shape of the rotating member 210 may be various, such as a rectangular plate, a bar-shaped block, etc., and the magnitude relation of the two rotating arms may be controlled by controlling the position of the rotation center on the rotating member 210. In order to improve the smoothness of rotation and the overall aesthetic property of the device, please refer to fig. 1-2, in the technical solution provided in the present invention, each rotating member 210 is configured as a diamond-like rotating member 210, the connecting end 211 of the diamond-like rotating member 210 has two adjacent and equal first adjacent sides, the rotating end 212 has two adjacent and equal second adjacent sides, the first adjacent sides and the second adjacent sides are disposed in parallel, and the length of the first adjacent sides is smaller than that of the second adjacent sides. Further, in order to ensure the rotation stability of the diamond-like rotary member 210, in the technical solution provided by the present invention, the intersection point of the diagonal lines of the diamond-like rotary member 210 coincides with the rotation center.
Further, the first connecting member 110 and the second connecting member 120 need to move relatively along with the vibration of the structure, and in the technical scheme provided by the invention, the connecting assembly 100 includes an elastic member disposed between the first connecting member 110 and the second connecting member 120, and the main function of the elastic member is to make the damper realize a self-resetting function. When the first connecting piece 110 and the second connecting piece 120 are far away from each other, the elastic piece stretches, and when the external force is removed, the elastic force of the elastic piece overcomes the electromagnetic damping force to do work, so that the rotating piece 210, the first connecting piece 110 and the second connecting piece 120 return to the initial positions again, the structure is self-reset, and residual displacement is avoided. In order to ensure the self-resetting function of the damper, the elastic member must be provided with an initial prestress, and the magnitude of the prestress is greater than that of the electromagnetic damping.
It should be noted that the elastic member may be provided in various manners, such as a spring, a resilient rib, or an SMA rod. In view of the practical problems, referring to fig. 1-4, in the present embodiment, the elastic member includes four SMA rods 130 respectively connected to the first connecting member 110 and the second connecting member 120, the four SMA rods 130 are respectively disposed on two sides of the first connecting member 110 and the second connecting member 120, the rotating member 210 and the connecting rod 220 are disposed in gaps formed by the four SMA rods 130, and the four SMA rods 130 are symmetrically distributed, so that the stress in the damper moving process can be ensured to be uniform. The SMA rod 130 is made of a shape memory alloy (shape memory alloys, abbreviated as SMA) which is a material composed of two or more metal elements having a shape memory effect by thermoelastic and martensitic transformation and inversion thereof. Further, in this embodiment, the SMA rod 130 is made of an iron-based SMA, which has the advantages of low cost, good memory, easy forming, high strength, etc., but has the problems of poor corrosion resistance, large deformation resistance, difficult machining, etc. Therefore, in order to overcome the problems, elements such as chromium (Cr), ni and the like are added in the iron-based SMA to improve the corrosion resistance of the SMA, and elements such as nitrogen (N), vanadium (V) and the like are added to improve the comprehensive performance of the SMA so that the SMA can better play a role in a damper.
Further, the first connecting piece 110 and the second connecting piece 120 are provided as two connecting pieces arranged at intervals in the invention, each connecting piece is provided with two connecting holes, one connecting hole is used for being connected with a structure, the other connecting hole is used for being hinged with a corresponding connecting rod 220, and the two connecting pieces are connected through an SMA rod 130. Specifically, the connection assembly 100 further includes a rotation shaft 140 disposed between the first connection member 110 and the second connection member 120, and protection plates 150 disposed at two ends of the rotation shaft 140, wherein the two rotation members 210 are both rotatably connected to the rotation shaft 140, each second magnetic member 320 is disposed at an end of each protection plate 150, and the protection plates 150 have a certain protection effect on the rotation members 210 and the pull rod, and in this embodiment, two sides of the protection plates 150 are provided with notches, so as to reduce material expenditure on one hand, and improve aesthetic appearance on the other hand.
Specifically, in the technical solution provided in the present invention, the first magnetic element 310 is set as the permanent magnet 311, the second magnetic element 320 is set as the conductor plate 321, and referring to the drawing, the permanent magnet 311 is set as the square, and the conductor plate 321 is set as the arc correspondingly. The arc-shaped conductor plate 321 can cover the entire movement range of the permanent magnet 311, and can reduce material outlay. The positions of the permanent magnet 311 and the conductor plate 321 may be interchanged, and the relative displacement between the two may be generated, which is not limited in the present invention.
The self-resetting energy-consumption amplifying type eddy current damper 10 based on the combined pull rod can change the damping force by changing the number of the permanent magnets 311, and is quite convenient. In an alternative embodiment, each rotating member 210 is provided with a permanent magnet 311, and it should be noted that the distance between the permanent magnet 311 and the conductor plate 321 is equal, so that the forces applied to the two ends of the rotating member 210 are equal, and thus the stability of the movement of the rotating member 210 is ensured. In other alternative embodiments, the number of the permanent magnets 311 may be four, one permanent magnet 311 is disposed on each side of each rotating end, the number of the conductor plates 321 is correspondingly four, and the two permanent magnets are disposed on both ends of the two protection plates 150. In this case, the permanent magnets 311 include thick permanent magnets 311 and thin permanent magnets 311 such that the distance between each permanent magnet 311 and the corresponding conductor plate 321 is equal. In this embodiment, since the whole damper is symmetrically designed, 4 permanent magnets 311 can be driven to overcome electromagnetic damping energy consumption together in the process of relative movement of the first connecting piece 110 and the second connecting piece 120, so that the whole energy consumption of the damper is enlarged by 4 times on the basis of movement displacement amplification, and the energy consumption of the damper is greatly increased.
The self-resetting energy-consumption amplifying type eddy current damper 10 based on the combined pull rod provided by the invention has the following technical advantages:
(1) The self-resetting energy-consumption amplification type eddy current damper 10 based on the combined pull rod utilizes the displacement amplification principle of a lever mechanism to realize the integral displacement response amplification and energy consumption synergy of the damper, so that the damper can consume larger energy under the action of small deformation of the structure;
(2) The self-resetting energy-consumption amplifying type eddy current damper 10 based on the combined pull rod is integrally designed into an assembled structure, and two ends of the connecting assembly 100 can be directly connected with a power transmission tower structure through bolts, so that the installation is convenient and simple;
(3) The self-resetting energy-consumption amplification type eddy current damper 10 based on the combined pull rod adopts a non-contact structure, and has the advantages that the conductor plate 321 is not contacted with a magnet, oil leakage (material), component abrasion and the like are avoided, and the maintenance is convenient and quick, so that the economic efficiency is remarkable;
(4) The self-resetting energy-consumption amplification type eddy current damper 10 based on the combined pull rod can directly change the magnitude of the eddy current damping force by adjusting the number of the permanent magnets 311, and has wider application range;
(5) The self-resetting energy-consumption amplifying type eddy current damper 10 based on the combined pull rod adopts the iron-based SMA rod 130, so that the structure can better realize the self-resetting function and reduce the residual displacement of the structure.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a self-resetting power consumption amplification type current vortex damper based on combination pull rod which characterized in that includes:
the connecting assembly comprises a first connecting piece and a second connecting piece which are arranged at intervals, wherein the first connecting piece and the second connecting piece are both used for being connected with a structural object, and the first connecting piece and the second connecting piece are arranged to be mutually close to or far away from each other along with the vibration of the structural object;
the rotary matching assembly comprises two rotary pieces and two connecting rods, wherein the two rotary pieces are connected to the connecting assembly in a rotary mode and are arranged in a partially laminated mode, each rotary piece is provided with a connecting end close to the other rotary piece and a rotating end far away from the other rotary piece, one end of each connecting rod is hinged to the first connecting piece or the second connecting piece respectively, and the other end of each connecting rod is hinged to the connecting end of each rotary piece correspondingly; the method comprises the steps of,
the magnetic vortex assembly comprises first magnetic pieces and second magnetic pieces, the first magnetic pieces are respectively arranged at two rotating ends, the second magnetic pieces are arranged on the connecting assembly at intervals and correspond to the first magnetic pieces, one of the first magnetic pieces and the second magnetic piece is set as a conductor, the other one of the first magnetic piece and the second magnetic piece is set as a magnet, the magnetic vortex assembly is used for generating electric vortex according to the relative movement of the first magnetic piece and the second magnetic piece, and then radiating, energy consumption and vibration reduction are realized through the resistance effect of the conductor.
2. The composite tie-rod based self-resetting energy-dissipating amplifying type eddy current damper according to claim 1, wherein each of the rotary members has a rotation center, and the linear distance of the rotation end of each rotary member from the rotation center is greater than the linear distance of the corresponding connection end from the rotation center.
3. The self-resetting energy-dissipation amplifying type eddy current damper based on a combined pull rod as set forth in claim 2, wherein each of the rotating members comprises a diamond-like rotating member, the connecting end of each of the diamond-like rotating members has two adjacent and equal first adjacent sides, the rotating end has two adjacent and equal second adjacent sides, the first adjacent sides and the second adjacent sides are arranged in parallel, and the length of the first adjacent sides is smaller than that of the second adjacent sides.
4. A self-resetting energy-dissipating amplifying type eddy current damper based on combined tie rod as claimed in claim 3, wherein the diagonal intersection of said diamond-like shaped rotating member coincides with said center of rotation.
5. The composite tie-rod based self-resetting energy-dissipating amplifying type eddy current damper according to claim 1, wherein the connecting assembly comprises an elastic member provided between the first connecting member and the second connecting member, the elastic member being configured to restore the first connecting member and the second connecting member to an original position after approaching or separating from each other.
6. The self-resetting energy-dissipating amplifying type eddy current damper based on combined tie rod as recited in claim 5, wherein the elastic member comprises a spring, a resilient rib or an SMA rod.
7. The self-resetting energy-dissipation amplification type eddy current damper based on a combined pull rod as set forth in claim 6, wherein the elastic member comprises four SMA rods respectively connected to the first connecting member and the second connecting member, the four SMA rods are respectively arranged on two sides of the first connecting member and the second connecting member, and the rotating plate and the connecting rod are both located in gaps formed by the four SMA rods.
8. The self-resetting energy-consumption-amplifying type eddy current damper based on the combined pull rod as set forth in claim 1, wherein the connecting assembly comprises a rotating shaft arranged between the first connecting piece and the second connecting piece and protection plates respectively arranged at two ends of the rotating shaft, the two rotating pieces are both rotatably connected to the rotating shaft, and the second magnetic pieces are respectively arranged at the end parts of the protection plates.
9. The self-resetting energy-consumption-amplifying type eddy current damper based on combined pull rod as set forth in claim 8, wherein the first magnetic member is a permanent magnet, the second magnetic member is a conductor plate, the permanent magnet is square, and the conductor plate is correspondingly arc-shaped.
10. The self-resetting energy-consumption amplifying type eddy current damper based on the combined pull rod as set forth in claim 9, wherein one permanent magnet is arranged on two sides of each rotating end, the number of the conductor plates is four correspondingly, the conductor plates are arranged at two ends of the two protection plates separately, and the thickness of each permanent magnet is changed, so that the distances between the permanent magnets and the corresponding conductor plates are equal.
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| CN202310243193.2A CN116446711A (en) | 2023-03-14 | 2023-03-14 | Self-resetting energy-consumption amplifying type eddy current damper based on combined pull rod |
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| CN202310243193.2A CN116446711A (en) | 2023-03-14 | 2023-03-14 | Self-resetting energy-consumption amplifying type eddy current damper based on combined pull rod |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020177045A1 (en) * | 2019-03-04 | 2020-09-10 | 大连理工大学 | Axial displacement amplification-type eddy current damper |
| WO2021051372A1 (en) * | 2019-09-20 | 2021-03-25 | 大连理工大学 | Self-reset tuned mass damper based on eddy current and shape memory alloy technology |
| CN114753514A (en) * | 2022-04-11 | 2022-07-15 | 北京工业大学 | Displacement amplification type E-shaped steel damper, node and construction method of node |
| CN115288314A (en) * | 2022-08-18 | 2022-11-04 | 北京工业大学 | Multi-stage energy consumption self-resetting damping device |
| CN115538835A (en) * | 2022-11-03 | 2022-12-30 | 北京工业大学 | Self-resetting rotary amplification friction energy dissipation damper |
-
2023
- 2023-03-14 CN CN202310243193.2A patent/CN116446711A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020177045A1 (en) * | 2019-03-04 | 2020-09-10 | 大连理工大学 | Axial displacement amplification-type eddy current damper |
| WO2021051372A1 (en) * | 2019-09-20 | 2021-03-25 | 大连理工大学 | Self-reset tuned mass damper based on eddy current and shape memory alloy technology |
| CN114753514A (en) * | 2022-04-11 | 2022-07-15 | 北京工业大学 | Displacement amplification type E-shaped steel damper, node and construction method of node |
| CN115288314A (en) * | 2022-08-18 | 2022-11-04 | 北京工业大学 | Multi-stage energy consumption self-resetting damping device |
| CN115538835A (en) * | 2022-11-03 | 2022-12-30 | 北京工业大学 | Self-resetting rotary amplification friction energy dissipation damper |
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