An eddy current damping device

Abstract

The application provides an eddy current damping device. The eddy current damping device comprises a power consumption amplification component and a power consumption component. The power consumption amplification component comprises a diversion body, a power consumption amplification block and a power consumption guide. The diversion body is provided with a conical part arranged along the axial direction of the diversion body. The power consumption guide is fixedly arranged perpendicularly to the central axis of the diversion body. The power consumption amplification block is slidably arranged on the conical surface of the conical part and the power consumption guide. The moving part of the power consumption component is connected with the power consumption amplification block. The application has the advantages of guaranteeing the damping effect under the condition of large damping force requirement, compact structure, low cost and the like.

Description

Technical Field

[0001] This invention relates to the field of damper technology, and more particularly to an eddy current damping device. Background Technology

[0002] Eddy current damping devices are widely used in vibration reduction of structures such as buildings and bridges due to their advantages of being fluid-free, highly reliable, and durable. The basic principle of eddy current damping devices is that when a conductor plate is placed in a changing magnetic field or moves within a magnetic field cutting magnetic lines of force, the conductor plate generates an induced current, which in turn generates heat energy. Through the eddy current effect, the eddy current damping device converts kinetic energy into electrical energy, which is then dissipated as heat energy, thus producing a damping effect and achieving seismic reduction. However, when existing eddy current damping devices are used for vibration reduction of large structures requiring very large damping forces, a large number of energy-dissipating magnets are needed. This results in a complex structure, a large footprint, heavy weight, high cost, and cumbersome operation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an eddy current damping device that ensures vibration reduction and energy dissipation effect when large damping force is required, and has a compact structure and low cost.

[0004] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows:

[0005] An eddy current damping device includes an energy-dissipating amplification component connected to the structure to be damped, and an energy-dissipating component disposed on the outer periphery of the energy-dissipating amplification component. The energy-dissipating amplification component includes a steering body, an energy-dissipating amplification block, and an energy-dissipating guide. The steering body has a tapered portion arranged along the axial direction of the steering body, and the energy-dissipating guide is fixedly disposed perpendicular to the central axis of the steering body. The opposite sides of the energy-dissipating amplification block are slidably disposed on the conical surface of the tapered portion and the energy-dissipating guide, respectively. The moving part of the energy-dissipating component is connected to the energy-dissipating amplification block.

[0006] As a further improvement to the above technical solution:

[0007] The axial energy dissipation amplification ratio of the energy dissipation amplification component is the ratio of the axial output force of the eddy current damping device to the magnetic resistance generated by the energy dissipation component. The axial energy dissipation amplification ratio M of the energy dissipation amplification component and the half-cone angle α of the tapered part satisfy M=tanα, 45°≤α<90°.

[0008] The energy-consuming amplifier block is slidably disposed on one side of the conical part and has a conical mating part with the same taper as the conical part. A guide component is provided between the conical mating part and the conical part and arranged along the generatrix of the conical part.

[0009] The moving part of the energy-consuming component is an energy-consuming magnet, and the fixed part of the energy-consuming component is a conductor plate; the connecting line between the energy-consuming magnet and the energy-consuming amplifying block, as well as the conductor plate, are arranged perpendicular to the central axis of the deflector.

[0010] Along the radial direction of the conical portion, a limiting magnet is provided on the outer periphery of the energy-dissipating magnet. The magnetic poles of the limiting magnet and the energy-dissipating magnet are opposite each other. The initial distance between the limiting magnet and the energy-dissipating magnet is the sum of the preset maximum vibration reduction displacement and the distance of the repulsive force generated between the magnets.

[0011] Each of the energy-consuming components includes at least two energy-consuming units, which are arranged at intervals along the outer periphery of the steering body; the number of energy-consuming amplifying blocks is the same as the number of energy-consuming units, and the moving parts of the energy-consuming units are connected to the energy-consuming amplifying blocks in a one-to-one correspondence.

[0012] The energy dissipation amplification components are at least two sets, arranged along the axial direction of the steering body. The steering body of one of the outermost energy dissipation amplification components is connected to the external structure to be damped. The tops of adjacent conical parts are arranged opposite each other and connected to each other by connecting rods. The bottom surfaces of adjacent conical parts are in contact with each other. The number of energy dissipation components is the same as the number of energy dissipation amplification components, and the two are set in a one-to-one correspondence.

[0013] The energy-consuming amplifying blocks corresponding to the adjacent conical portions arranged opposite each other at the top are slidably mounted on the same energy-consuming guide.

[0014] The eddy current damping device also includes a support protective sleeve. The fixing part of the energy dissipation component and the energy dissipation guide are installed on the inner side wall of the support protective sleeve. The energy dissipation amplification component is arranged along the axial direction of the support protective sleeve. The bottom surface of the tapered part connected to the structure to be damped is provided with a movable ear plate that passes through the end face of the support protective sleeve. The other end face of the support protective sleeve is provided with a fixed ear plate.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] When the structure to be damped vibrates, the present invention moves the steering body of the energy dissipation amplification component along the vibration direction of the structure to be damped. At this time, the energy dissipation amplification block slides along the conical surface of the conical part of the steering body. Simultaneously, the energy dissipation amplification block moves radially along the steering body under the guidance of the energy dissipation guide, thereby driving the moving part of the energy dissipation component connected to the energy dissipation amplification block to move along the vibration direction perpendicular to the structure to be damped, thereby cutting the magnetic field to generate eddy currents and damping force, and achieving effective vibration reduction and energy dissipation.

[0017] The conical portion of the steering body in this invention changes the energy dissipation direction of the energy-dissipating components from the vibration direction along the structure to the vibration direction perpendicular to the structure. This change in the arrangement direction of the energy-dissipating components from the vibration direction to a direction perpendicular to the vibration direction significantly reduces the axial arrangement space of the damper. Furthermore, the conical portion increases the arrangement space of the energy-dissipating components; multiple components can be arranged circumferentially along the conical portion according to vibration reduction requirements. This greatly increases the number of energy-dissipating components in the case of limited axial space, thereby significantly improving the energy dissipation and vibration reduction capability of the damper. This invention effectively solves the problems of numerous energy-dissipating components, large space occupation, and high cost when the damping force requirement is high. It ensures the vibration reduction and energy dissipation effect of the damper under high damping force requirements, while greatly saving the arrangement space and cost of the damper. It is applicable to the vibration reduction of large structures with high damping force requirements.

[0018] Simultaneously, the magnetic reluctance generated by the energy-dissipating component cutting magnetic field lines is fed back to the steering body. The energy-dissipating force generated by this magnetic reluctance is then redirected through the conical portion of the steering body and amplified into the axial output force of the eddy current damping device, thereby suppressing the vibration displacement of the structure to be damped. This significantly increases the damping energy received by the structure relative to the energy dissipation energy generated by the energy-dissipating component. The magnetic reluctance generated by the radial movement of the energy-dissipating component in this invention is amplified by the conical portion, thus better suppressing vibration. Compared to existing dampers, this significantly improves the energy dissipation and vibration reduction effect while maintaining the same energy dissipation power. Attached Figure Description

[0019] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0020] Figure 1 This is the front view of Embodiment 1 of the present invention.

[0021] Figure 2 yes Figure 1 A sectional view of AA.

[0022] Figure 3 This is a schematic diagram illustrating the energy consumption amplification principle of the eddy current damping device of the present invention.

[0023] Figure 4 This is a schematic diagram of the eddy current damping device of the present invention under pressure.

[0024] Figure 5 This is a schematic diagram of the eddy current damping device of the present invention under tension.

[0025] Figure 6 This is a schematic diagram of the present invention in a specific application.

[0026] Figure 7 This is the front view of Embodiment 2 of the present invention.

[0027] The labels in the diagram represent:

[0028] 1. Energy-consuming component; 11. Energy-consuming unit; 111. Energy-consuming magnet; 112. Conductor plate; 113. Magnetic plate; 2. Energy-consuming amplification component; 21. Steering body; 211. Conical part; 22. Energy-consuming amplification block; 221. Conical mating part; 23. Energy-consuming guide; 3. Limiting magnet; 4. Structure to be vibration-damped; 41. Bridge; 5. Support protective sleeve; 6. Moving ear plate; 7. Fixed ear plate; 8. Foundation support. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection of the present invention.

[0030] Example 1

[0031] Figure 1 and Figure 2 An embodiment of the eddy current damping device of the present invention is shown. The eddy current damping device includes an energy dissipation amplification component 2 and an energy dissipation component 1. The energy dissipation amplification component 2 is connected to the structure 4 to be damped, and the energy dissipation component 1 is disposed on the outer periphery of the energy dissipation amplification component 2. The energy dissipation amplification component 2 includes a steering body 21, an energy dissipation amplification block 22, and an energy dissipation guide 23. The steering body 21 has a tapered portion 211, which is arranged along the axial direction of the steering body 21. The energy dissipation guide 23 is fixedly disposed perpendicular to the central axis of the steering body 21. The opposite sides of the energy dissipation amplification block 22 are respectively slidably disposed on the tapered surface of the tapered portion 211 and the energy dissipation guide. The moving part of the energy dissipation component 1 is connected to the energy dissipation amplification block 22.

[0032] When the structure 4 to be vibration-damped vibrates, the steering body 21 of the energy-dissipating amplification component 2 moves along the vibration direction of the structure 4 to be vibration-damped. At this time, the energy-dissipating amplification block 22 slides along the conical surface of the conical part 211 of the steering body 21. Simultaneously, the energy-dissipating amplification block 22 moves radially along the steering body 21 under the guidance of the energy-dissipating guide 23, thereby driving the moving part of the energy-dissipating component 1 connected to the energy-dissipating amplification block 22 to move along the vibration direction perpendicular to the structure 4 to be vibration-damped, thereby cutting the magnetic field to generate eddy currents and damping force, and achieving effective vibration reduction and energy dissipation.

[0033] The steering body 21 of this invention features a tapered portion 211, which changes the energy dissipation direction of the energy-dissipating component 1 from the vibration direction along the structure 4 to a direction perpendicular to the vibration direction of the structure 4. This changes the arrangement direction of the energy-dissipating component 1 from the vibration direction to a direction perpendicular to the vibration direction, significantly reducing the axial arrangement space of the damper. Furthermore, the tapered portion 211 increases the arrangement space of the energy-dissipating component 1, allowing multiple energy-dissipating components 1 to be arranged circumferentially along the tapered portion 211 according to vibration reduction requirements. This greatly increases the number of energy-dissipating components 1 in the case of limited axial space, thereby significantly improving the energy dissipation and vibration reduction capability of the damper. This invention effectively solves the problems of a large number of energy-dissipating components 1, large space occupation, and high cost when the damping force requirement is high. It ensures the vibration reduction and energy dissipation effect of the damper when the damping force requirement is high, while greatly saving the arrangement space and cost of the damper. It is applicable to the vibration reduction of large structures with high damping force requirements.

[0034] Simultaneously, the magnetic resistance generated by the energy-dissipating component 1 cutting the magnetic field lines is fed back to the steering body 21. The energy-dissipating force generated by this magnetic resistance is then converted in direction by the tapered portion 211 of the steering body 21 and amplified into the axial output force of the eddy current damping device, thereby suppressing the vibration displacement of the structure 4 to be damped. This significantly increases the damping energy received by the structure 4 compared to the energy dissipation energy generated by the energy-dissipating component 1. The magnetic resistance generated by the radial movement of the energy-dissipating component 1 in this invention is amplified by the tapered portion 211, thus better suppressing vibration. Under the same energy dissipation power, its energy dissipation and vibration reduction effect is significantly improved compared to existing dampers.

[0035] like Figure 3 As shown, the axial energy dissipation amplification ratio of the energy dissipation amplification component 2 is the ratio of the axial output force of the eddy current damping device to the magnetic resistance generated by the energy dissipation component 1. The axial energy dissipation amplification ratio M of the energy dissipation amplification component 2 and the semi-cone angle α of the conical part 211 satisfy M = tanα, 45° ≤ α < 90°. Therefore, the axial output force of the damper is directly proportional to the cone angle of the conical part 211. The larger the cone angle of the conical part 211, the greater the axial output force of the damper and the greater the dissipated vibration energy; conversely, the smaller the axial output force of the damper and the smaller the dissipated vibration energy. The angle of the semi-cone angle α can be selected according to the actual energy dissipation requirements; when 45° ≤ α < 90°, it has an energy dissipation amplification effect.

[0036] Furthermore, a tapered fitting part 221 is provided on one side of the tapered portion 211 where the energy-dissipating amplifying block 22 slides. The tapered fitting part 221 has the same taper as the tapered portion 211. While ensuring that the energy-dissipating amplifying block 22 moves along the tapered surface of the tapered portion 211, it can also move perpendicular to the axial direction of the steering body 21, ensuring reliable and effective operation of the damper. At the same time, a guide component is provided between the tapered fitting part 221 and the tapered portion 211. The guide component is arranged along the generatrix of the tapered portion 211, ensuring that the energy-dissipating amplifying block 22 moves along the generatrix of the tapered portion 211 while ensuring the effective transmission of the energy-dissipating force.

[0037] In this embodiment, the tapered portion 211 is a cone. In other embodiments, any form of the tapered portion 211 that can achieve energy amplification should be within the protection scope of this invention. For example, the tapered portion 211 can also be a pyramid, an elliptical cone, etc.

[0038] like Figure 1 As shown, the moving part of the energy-consuming component 1 is an energy-consuming magnet 111, and the fixing part of the energy-consuming component 1 is a conductor plate 112; the connecting line between the energy-consuming magnet 111 and the energy-consuming amplifying block 22, as well as the conductor plate 112, are arranged perpendicular to the central axis of the steering body 21. Its layout is compact and occupies little space. In other embodiments, the moving part of the energy-consuming component 1 can also be a conductor plate 112, and the fixing part of the energy-consuming component 1 can also be an energy-consuming magnet 111.

[0039] Furthermore, along the radial direction of the conical portion 211, a limiting magnet 3 is provided on the outer periphery of the energy-dissipating magnet 111. The magnetic poles of the limiting magnet 3 and the energy-dissipating magnet 111 are opposite each other. The initial distance between the limiting magnet 3 and the energy-dissipating magnet 111 is the sum of the preset maximum vibration damping displacement and the distance at which the repulsive force is generated between the magnets. This ensures that when the energy-dissipating magnet 111 moves within the preset maximum vibration damping displacement, it will generate a repulsive force with the limiting magnet 3; when the energy-dissipating magnet 111 moves within the preset maximum vibration damping displacement, it will not generate a repulsive force with the limiting magnet 3, thus not affecting the vibration damping and energy dissipation effect of the energy-dissipating component 1.

[0040] This invention utilizes the repulsive force generated by the limiting magnet 3 and the energy-dissipating magnet 111 to control the energy-dissipating magnet 111 to continue moving within a certain range when moving to a preset maximum vibration displacement, thus preventing the energy-dissipating magnet 111 from detaching. Simultaneously, the movement of the energy-dissipating magnet 111 within a certain range can cut magnetic field lines and dissipate vibration energy. Therefore, the setting of the limiting magnet 3 ensures that the damper will not be damaged when moving to the preset vibration displacement and can effectively dissipate vibration reduction energy, greatly improving the safe and reliable operation of the damper in extreme environments. Furthermore, it has a simple structure, small footprint, and low cost.

[0041] Furthermore, the energy-dissipating component 1 also includes a magnetically conductive plate 113, which is disposed at the position of the conductor plate 112 to reduce magnetic resistance while maintaining a constant magnetic potential. The magnetically conductive material can be a steel plate or iron plate with good magnetic permeability. In other embodiments, the energy-dissipating magnet 111 can also be a permanent magnet made of other materials.

[0042] like Figure 2 As shown, each energy-consuming component 1 of the present invention is provided with six energy-consuming units 11, which are arranged at intervals along the outer periphery of the steering body 21. The number of energy-consuming amplifying blocks 22 is the same as the number of energy-consuming units 11, i.e., six. The energy-consuming magnets 111 of the energy-consuming units 11 are connected to the energy-consuming amplifying blocks 22 in a one-to-one correspondence. The structure is compact, occupies little space, and has good energy consumption and vibration reduction effects. In other embodiments, the number of energy-consuming units 11 can be adjusted according to energy consumption requirements, such as three or four energy-consuming units 11 in each energy-consuming component 1.

[0043] This invention allows for adjustment of the damping coefficient and damping force of the damper by setting the number of energy-dissipating units 11 on the outer periphery of the steering body 21. An increase in the number of energy-dissipating units 11 is directly proportional to an increase in the damping coefficient and damping force; for example, when the number of energy-dissipating units 11 on the outer periphery of the steering body 21 increases from two sets to four sets, the damping coefficient and damping force also double. This invention, without increasing the size and space of the damper, fully utilizes the characteristic structure of the conical surface of the conical portion 211 to achieve flexible adjustment of the damping coefficient and damping force, which greatly improves the vibration reduction and energy dissipation effect of the damper.

[0044] like Figure 1 As shown, in this embodiment, there are eight sets of energy-dissipating amplification components 2, arranged along the axial direction of the steering body 21. The steering body 21 of one of the outermost energy-dissipating amplification components 2 is connected to the structure 4 to be damped; the tops of adjacent conical portions 211 are arranged opposite each other, and the tops of adjacent conical portions 211 are connected to each other by a connecting rod; the bottom surfaces of adjacent conical portions 211 are in contact with each other; the number of energy-dissipating components 1 is the same as the number of energy-dissipating amplification components 2, and they are arranged in a one-to-one correspondence. In other embodiments, the number of energy-dissipating amplification components 2 can be adjusted according to energy consumption requirements; for example, the energy-dissipating amplification components 2 can also be set as follows: Figure 4 and Figure 5 It can be set to two groups, or three, four, etc.

[0045] This invention allows for adjustment of the damping coefficient and damping force of the damper by setting the number of energy-dissipating amplification components 2. Furthermore, the increase in the number of energy-dissipating amplification components 2 is directly proportional to the increase in both the damping coefficient and damping force. For example, when the number of energy-dissipating amplification components 2 is increased from two sets to four sets, both the damping coefficient and damping force double. This invention achieves flexible adjustment of the damping coefficient and damping force, significantly improving the vibration reduction and energy dissipation effect of the damper.

[0046] As can be seen, the present invention achieves flexible adjustment of the damping coefficient and damping force by setting the number of energy-dissipating units 11 on the outer periphery of the steering body 21 and the number of energy-dissipating amplification components 2 along the axial direction of the steering body 21. For example, if two sets of energy-dissipating amplification components 2 are set, with each set containing six energy-dissipating units 11, then the damper has twelve energy-dissipating units 11 for energy dissipation. If the damping coefficient is 1, then adding two more sets of energy-dissipating amplification components 2 along the axial direction of the damper will increase the damping coefficient to 2. Therefore, the present invention fully utilizes the limited space of the damper and maximizes the damping and energy-dissipating capacity of the damper.

[0047] Preferably, the energy-dissipating amplifying blocks 22 corresponding to adjacent tapered portions 211 arranged opposite each other at the top are slidably mounted on the same energy-dissipating guide 23, which further saves the axial arrangement space and cost of the damper. In other embodiments, the energy-dissipating amplifying blocks 22 corresponding to adjacent tapered portions 211 may also be provided with separate energy-dissipating guides 23.

[0048] In this embodiment, the energy-consuming guide 23 is a guide rail; in other embodiments, any guide structure that can ensure the energy-consuming amplifying block 22 moves radially along the steering body 21 should be within the protection scope of this invention, such as guide column sliders, drive pistons, etc.

[0049] like Figure 4 As shown, when the damper is compressed, the tapered portion 211 of the present invention moves to the right along the axial direction of the damper. At this time, the space between the right side of the energy-dissipating guide 23 and the tapered portion 211 increases, and the energy-dissipating amplifying block 22 at this location moves closer to the axis of the steering body 21 due to the restriction of the guide components on both sides; the space between the left side of the energy-dissipating guide 23 and the tapered portion 211 decreases, and the energy-dissipating amplifying block 22 at this location moves away from the axis of the steering body 21. At this time, the energy-dissipating magnet 111 cuts the magnetic field and dissipates energy as the energy-dissipating amplifying block 22 moves.

[0050] Similarly, such as Figure 5 As shown, when the damper is under tension, the energy dissipation amplification block 22 on the right side of the energy dissipation guide 23 moves away from the axis of the steering body 21, while the energy dissipation amplification block 22 on the left side of the energy dissipation guide 23 moves closer to the axis of the steering body 21, thereby achieving energy dissipation and vibration reduction.

[0051] In this embodiment, the eddy current damping device also includes a support protective sleeve 5. The fixing part of the energy dissipation component 1, the energy dissipation guide 23, and the limiting magnet 3 are all installed on the inner side wall of the support protective sleeve 5; the energy dissipation amplification component 2 is arranged along the axial direction of the support protective sleeve 5; the bottom surface of the tapered part 211 connecting the structure to be damped 4 is provided with a movable ear plate 6, which passes through the end face of the support protective sleeve 5 and connects to the structure to be damped 4; the other end face of the support protective sleeve 5 is provided with a fixed ear plate 7, which is connected to the fixed structure. Its connection is convenient and its structure is simple.

[0052] Figure 6 An embodiment of the present invention in a specific application is shown. The present invention can be applied to a bridge vibration reduction system, which includes a bridge 41, a foundation support 8, and an eddy current damping device as described above. The structure to be damped 4 is the bridge 41, the fixed structure is the foundation support 8, and the eddy current damping device is connected between the bridge 41 and the foundation support 8. The conical portion 211 of the steering body 21 is arranged along the direction of vibration reduction of the bridge 41. The bridge vibration reduction system of the present invention also has the above-mentioned advantages, and its layout is simple and compact, occupies little space, and has low cost.

[0053] In this embodiment, the direction of vibration reduction for the bridge 41 is horizontal. The conical portions 211 are arranged horizontally, and the bottom surface of the conical portions 211 is connected to the bridge 41 via movable ear plates 6. The eddy current damping device is arranged horizontally, which can effectively reduce the vibration of the bridge 41 in the horizontal direction. In other embodiments, if the direction of vibration reduction is vertical, the eddy current damping device can also be arranged vertically, and the conical portions 211 are arranged vertically.

[0054] Example 2

[0055] Figure 7 Another embodiment of the eddy current damping device of the present invention is shown. This embodiment is basically the same as that of embodiment 1, except that the bottom surface of the tapered part 211 of this embodiment directly bears the force of the structure 4 to be damped, and no force transmission components such as ear plates are provided. Its structure is compact and low cost.

[0056] In this embodiment, the vibration reduction direction of the structure 4 to be vibration-damped is vertical, and the tapered portion 211 is arranged vertically. The bottom surface of the tapered portion 211 is in direct contact with the structure 4 to be vibration-damped, which allows the vibration displacement to be directly transmitted to the energy-dissipating amplification component 2 and the energy-dissipating component 1, thereby achieving effective vibration reduction and energy dissipation. In other embodiments, if the vibration reduction direction is horizontal, the tapered portion 211 can also be arranged horizontally.

[0057] In this embodiment, the energy dissipation amplification component 2 is configured as one set; the energy dissipation unit 11 is configured as two sets, with the two sets of energy dissipation units 11 arranged opposite to each other on the outer periphery of the steering body 21 of the energy dissipation amplification component 2; the energy dissipation amplification block 22 is also configured as two, with each energy dissipation amplification block 22 corresponding to one energy dissipation unit 11. In other embodiments, the number of energy dissipation units 11 and energy dissipation amplification components 2 can also be set according to the actual vibration reduction requirements.

[0058] In this embodiment, the energy-dissipating amplification blocks 22 arranged opposite to each other are slidably mounted on the same energy-dissipating guide 23. In other embodiments, the energy-dissipating amplification blocks 22 may also be provided with separate energy-dissipating guide 23;

[0059] Taking the structure to be vibration-damped 4 as bridge 41 and the fixed structure as the base support 8 as an example, the flat end of the conical part 211 directly bears the weight of bridge 41. When bridge 41 generates vertical vibration, the energy-dissipating amplification block 22 moves away from the axis of the steering body 21 after being subjected to force through the energy-dissipating guide 23. At this time, the energy-dissipating magnet 111 transversely cuts the magnetic field lines to generate magnetic resistance. The magnetic resistance is fed back to the steering body 21. Then, the energy-dissipating force generated by the magnetic resistance is converted into the energy-dissipating direction through the conical part 211 of the steering body 21 and amplified into an axial force output, thereby causing the vibration of bridge 41 to gradually decrease and achieving excellent vibration reduction and energy dissipation effect.

[0060] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An eddy current damping device, characterized in that, The device includes an energy-dissipating amplification component connected to the structure to be vibration-damped, and an energy-dissipating component disposed on the outer periphery of the energy-dissipating amplification component. The energy-dissipating amplification component includes a steering body, an energy-dissipating amplification block, and an energy-dissipating guide. The steering body has a tapered portion arranged along the axial direction of the steering body, and the energy-dissipating guide is fixedly disposed perpendicular to the central axis of the steering body. The opposite sides of the energy-dissipating amplification block are slidably disposed on the conical surface of the tapered portion and the energy-dissipating guide, respectively. The moving part of the energy-dissipating component is connected to the energy-dissipating amplification block. The moving part of the energy-dissipating component is an energy-dissipating magnet, and the fixed part of the energy-dissipating component is a conductor plate. The connecting line between the energy-dissipating magnet and the energy-dissipating amplification block, as well as the conductor plate, are arranged perpendicular to the central axis of the steering body. Each of the energy-consuming components includes at least two energy-consuming units, which are arranged at intervals along the outer periphery of the steering body; the number of energy-consuming amplifying blocks is the same as the number of energy-consuming units, and the moving parts of the energy-consuming units are connected to the energy-consuming amplifying blocks in a one-to-one correspondence; there are at least two sets of energy-consuming amplifying components, which are arranged along the axial direction of the steering body, and the steering body of one of the outermost energy-consuming amplifying components is connected to the external structure to be damped; the tops of adjacent conical portions are arranged opposite each other and connected to each other by connecting rods; the bottom surfaces of adjacent conical portions are in contact with each other; the number of energy-consuming components is the same as the number of energy-consuming amplifying components, and the two are arranged in a one-to-one correspondence.

2. The eddy current damping device according to claim 1, characterized in that, The axial energy dissipation amplification ratio of the energy dissipation amplification component is the ratio of the axial output force of the eddy current damping device to the magnetic reluctance generated by the energy dissipation component. The axial energy dissipation amplification ratio M of the energy dissipation amplification component is related to the semi-cone angle of the tapered portion. satisfy , .

3. The eddy current damping device according to claim 1, characterized in that, The energy-consuming amplifier block is slidably disposed on one side of the conical part and has a conical mating part with the same taper as the conical part. A guide component is provided between the conical mating part and the conical part and arranged along the generatrix of the conical part.

4. The eddy current damping device according to any one of claims 1 to 3, characterized in that, Along the radial direction of the conical portion, a limiting magnet is provided on the outer periphery of the energy-dissipating magnet. The magnetic poles of the limiting magnet and the energy-dissipating magnet are opposite each other. The initial distance between the limiting magnet and the energy-dissipating magnet is the sum of the preset maximum vibration reduction displacement and the distance of the repulsive force generated between the magnets.

5. The eddy current damping device according to any one of claims 1 to 3, characterized in that, The energy-consuming amplifying blocks corresponding to the adjacent conical portions arranged opposite each other at the top are slidably mounted on the same energy-consuming guide.

6. The eddy current damping device according to any one of claims 1 to 3, characterized in that, It also includes a support protective sleeve, the fixing part of the energy dissipation component and the energy dissipation guide are installed on the inner side wall of the support protective sleeve, the energy dissipation amplification component is arranged along the axial direction of the support protective sleeve, the bottom surface of the conical part connected to the structure to be vibration damped is provided with a movable ear plate that passes through the end face of the support protective sleeve; the other end face of the support protective sleeve is provided with a fixed ear plate.

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