CN107355509A - A kind of current vortex vibration absorber using lever principle - Google Patents
A kind of current vortex vibration absorber using lever principle Download PDFInfo
- Publication number
- CN107355509A CN107355509A CN201710678070.6A CN201710678070A CN107355509A CN 107355509 A CN107355509 A CN 107355509A CN 201710678070 A CN201710678070 A CN 201710678070A CN 107355509 A CN107355509 A CN 107355509A
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- Prior art keywords
- mass
- permanent magnet
- guide rail
- vibration absorber
- lever principle
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
- F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
Abstract
The present invention provides a kind of current vortex vibration absorber using lever principle, and the vibration absorber includes casing (1), connecting screw hole (2), fixed copper coin (3), permanent magnet (4), permanent magnet guide rail (5), support bar (6), mobile copper coin (7), mass (8), mass guide rail (9), spring (10), connecting rod (11), be hinged screw (12), driving bearing pin (13)；When structure is vibrated, energy transfer is carried out by TMD dampers first, reduces structural vibration；Then permanent magnet generation and the motion of mass opposite direction are moved by lever body frenulum by mass, increases the speed of related movement of copper coin and permanent magnet, passed through eddy current damper and carry out non-contact type energy dissipation.The device utilizes lever principle, is effectively increased the speed of related movement of copper coin and permanent magnet, improves damper energy dissipation capacity；Simultaneously by adjusting balance pivot and torque arm length, TMD damperparameters can be adjusted, it is more extensive that device is applicable frequency range.
Description
Technical field
The present invention relates to a kind of current vortex vibration absorber using lever principle, suitable for bridge, building, power transmission tower, sea
The vibration damping control of all kinds of civil engineering structures such as fan.
Background technology
With the constantly improve of China's infrastructure construction, overlength super-span bridge, super-high building structure, high-speed railway
And subterranean railway scale constantly expands.And with the development of civil engineering technology and construction material, civil engineering structure tends to
In structure is light-duty, large span, Super High, form complexity the characteristics of.This class formation is also easy to produce larger change under dynamic load function
Shape and vibration.Vibration, which occurs, for structure can not only make top personnel produce discomfort, excessive deformation and the easy increase knot of vibration
The internal stress of structure, structure durability is reduced, What is more to cause structure to be destroyed, threat to life property safety.
How vibration damping is carried out to civil engineering structure, new challenge is proposed to numerous researchers.Traditional structure vibrates
Control technology is contacted using reinforcement structure, increases component section, to improve the rigidity of structure, reduces structural amplitude, control structure is shaken
It is dynamic.But this can increase the quality of structure, increase the consumption of material, and difficulty of construction can be greatly increased.Therefore, structure is carried out
Vibration control turns into much-talked-about topic in recent years.
Whether need extra power according to control measure, structural vibration control be generally divided into active control, semi- active control,
Passive control and mixing control.Wherein, damper is the core component of control device, and the selection of damper directly affects control energy
The quality of power.Active control device reduces the dynamic respons of structure using additional energy input, although its control effect is good, adapts to
Property it is strong, but technical sophistication, involve great expense, maintenance requirement it is high, engineer applied has larger difficulty.Passive control does not need external energy
Input, mainly change rigidity, the size of damping and quality and its distribution in structural system of structure, Huo Zhegai by designing
Become the bang path of external load, to reach the purpose of control engineering structure response, technology is easy, cheap, practical application energy
Power is strong, and also has preferable effectiveness in vibration suppression.
TMD (Tuned Mass Damper) damping mechanism is：A small quality power is added in principal oscillation system to disappear
Vibrating system.When meeting Damper System response lag in the condition of principal oscillation system response pi/2, the now elastic force of Damper System
To main vibrating system equivalent to viscosity resistance, suppress the displacement of main vibrating system, so as to reduce the vibration of main vibrating system to greatest extent,
Reach the effect of vibration damping.Eddy-current damping is a kind of physical phenomenon based on electromagnetic induction principle.When non-magnetic conductor is in magnetic
When cutting magnetic induction line moves in, consecutive variations will occur for the magnetic flux through conductor.According to Faraday's electromagnetic induction law,
Corresponding induced electromotive force can be produced in conductor, so as to form the electric current of similar vortex, i.e. current vortex.According to Lenz's law, electricity
Vortex can produce a new magnetic field opposite with magnetic field simultaneously, form the damping force for hindering the two relative motion.So
The result of circulation ultimately results in vibrational energy and is consumed by the resistance fuel factor of conductor, and here it is eddy-current damping.At this
During one, conductor plate and the kinetic energy of magnetic field relative motion are first changed into electric energy, then thermal energy consumption is converted into conductor plate, in
It is to play a part of passive energy dissipation.Eddy current damper has good endurance, easy for installation by the way of contactless power consumption
The advantages that, it is used widely.
How eddy-current damping is increased as study hotspot in recent years, and increase is to increase by conductor magnetic flux change speed
The key for adding damper to consume energy, mainly pass through three kinds of effective ways, i.e. increasing magnetic field, increase conductor thickness and increase conductor
The speed of cutting magnetic induction line.Permanent magnet magnetic field intensity is bigger, and not only magnet material is claimed, and can increase declining for magnetic field
The rate of deceleration, the quality that increase copper plate thickness can be given outside device plus, increase design and construction difficulty, moreover, both approaches are equal
Cost can be significantly increased.The present invention effectively improves power consumption effect using the speed of mechanical leverage system increase conductor cutting magnetic induction line
Fruit.
The content of the invention
Technical problem：The problem of excessive is vibrated for existing civil engineering structure, the present invention provides one kind using lever original
The current vortex vibration absorber of reason.Lever principle is borrowed, effectively improves the effectiveness in vibration suppression of current vortex shock absorber, and by adjusting thick stick
Bar position of the fulcrum and torque arm length, the frequency of use scope of vibration absorber can be adjusted.Convenient for installation and maintenance, service life
It is long, Multi-regulation can be achieved, the vibration damping available for civil engineering structure controls.
Technical scheme：To achieve the above object, a kind of current vortex vibration absorber using lever principle of the present invention uses
Technical scheme is：
The vibration absorber includes casing, connecting screw hole, fixed copper coin, permanent magnet, permanent magnet guide rail, support bar, mobile copper
Plate, mass, mass guide rail, spring, connecting rod, be hinged screw, driving bearing pin；Wherein, permanent magnet has two up and down, leads to respectively
Permanent magnet guide rail is crossed to be connected with casing；Mass is connected by mass guide rail with casing；Spring is arranged on mass both sides, set
On mass guide rail；Mass, permanent magnet and casing reserve enough spacing, so that permanent magnet can be led in permanent magnet
On rail slidably；Mass can be on mass guide rail slidably, and fixed copper coin has two pieces, is separately fixed in casing
Top and bottom；Mobile copper coin has two pieces, is separately fixed at the upper and lower part of mass；Connecting rod passes through driving bearing pin respectively
It is hinged with permanent magnet, mass.
The permanent magnet, support bar, mass, connecting rod, be hinged screw, driving bearing pin composition mechanical lever transmission device,
The speed of related movement between permanent magnet and mobile copper coin can effectively be amplified, improve eddy current damper energy dissipation capacity.
The post position is freely adjustable, by adjusting the position of support bar, changes the position of connecting rod central pivot point
And lever arm of force length, the mass parameter of TMD dampers is adjusted, vibration absorber is applicable frequency range more wide
It is general.
All components are mounted in casing, and casing is formed to internals and protected, and greatly extends the vibration absorber
Service life；Also, connecting screw hole is reserved as required in casing, makes device installation more convenient.
Contact position between permanent magnet guide rail and permanent magnet and mass guide rail and mass scribbles lubricant, reduces
Its relative frictional force, reduces the deterioration inside device.
Permanent magnet uses neodymium iron boron, and the material has excellent magnetic property, can produce continual and steady magnetic field.
Permanent magnet guide rail, mass guide rail and connecting rod use non-magnetic material, ensure during each transmission operation not
It is affected by magnetic forces.
Described non-magnetic material is without magnetic aluminum alloy materials, carbon fibre material.
Beneficial effect：
1st, the present invention is amplified using mechanical driving device to conductor cutting magnetic induction line speed, can greatly lift resistance
The operating efficiency of Buddhist nun's device.
2nd, the present invention can control the working frequency of TMD dampers by adjusting post position, make the adjustable of the device
Property is bigger, and adaptability is stronger.
3rd, the present invention is effectively reduced in the device course of work by the coated grapheme material on guide rail or other lubricants
Frictional resistance, reduce device abrasion, effectively increase the service life.
4th, the present invention uses board-like eddy current principle, using contactless power consumption mode, inputs, can lead to without extra power
Cross device itself to control structure in real time, there is simple structure, good endurance, it is easy to maintenance the advantages that.
5th, all productions of vibration absorber of the present invention, assembling can be carried out in factory, avoid the dress of live work high above the ground
With difficult, poor accuracy, improve live efficiency, ensure effectiveness in vibration suppression.Be easy to implement vibration absorber Standardized Design, manufacture with
Installation, improve operating efficiency.
Brief description of the drawings
Fig. 1 is a kind of top view of current vortex vibration absorber using lever principle；
Fig. 2 is a kind of side view of current vortex vibration absorber using lever principle；
Fig. 3 is I-I profile in Fig. 1；
Fig. 4 is II-II profile in Fig. 3；
Fig. 5 is III-III profile in Fig. 3；
Fig. 6 is IV-IV profile in Fig. 3；
Fig. 7 is connecting rod 11 shown in Fig. 3, Fig. 4, be hinged screw 12, the thin portion enlarged drawing of driving bearing pin 13.
Have in figure：Casing 1, connecting screw hole 2, fixed copper coin 3, permanent magnet 4, permanent magnet guide rail 5, support bar 6, mobile copper coin
7th, mass 8, mass guide rail 9, spring 10, connecting rod 11, be hinged screw 12, driving bearing pin 13.
Embodiment
For convenience of those skilled in the art's accurate understanding, the present invention is made further specifically below in conjunction with accompanying drawing
Bright, the content mentioned by embodiment is not limitation of the invention.
Eddy current damper is dissipative damping device made of a kind of damping effect using current vortex, has construction letter
The advantages that list, good endurance, at present, shaking in civil engineering structure is applied mainly as the damping element of tuned mass damper
Dynamic control field.In addition, leverage is simple and easy, by adjusting lever both ends torque arm length, it is possible to achieve borrows permanent magnet
Quality TMD parameters are adjusted；And lever both sides have obvious relative motion, permanent magnet and copper coin can be increased
Speed of related movement, it is effectively increased the energy dissipation capacity of damper.
A kind of current vortex vibration absorber using lever principle of the present invention, mainly include casing 1, connecting screw hole 2, consolidate
Determine copper coin 3, permanent magnet 4, permanent magnet guide rail 5, support bar 6, mobile copper coin 7, mass 8, mass guide rail 9, spring 10, connecting rod
11st, screw 12, driving bearing pin 13 are hinged.As shown in Figure 1,2,3, 4.
The spring 10 is arranged on mass guide rail 9, as shown in Fig. 3,6.It is extensive for providing elasticity for TMD dampers
Multiple power.
The permanent magnet guide rail 5, mass guide rail 9 are fixed on casing 1, and as shown in Fig. 3,5,6, fixed form is optional
Select welding, mechanically connect etc..Permanent magnet guide rail 5 scribbles graphene or other lubricants with mass guide rail 9, reduces permanent magnetism
Frictional force between body guide rail 5 and permanent magnet 4 and mass guide rail 9 and mass 8.
The mass 8 is arranged on mass guide rail 9, and mounting means can be used and is mechanically connected, such as the institute of Fig. 3,4,6
Show.Mass quality can be controlled by adjustment module quantity, and TMD dampers are formed with spring 10, mass guide rail
Main part.
The permanent magnet 4 is arranged on permanent magnet guide rail 5, and mounting means can be used and is mechanically connected, such as the institute of Fig. 3,4,5
Show.Permanent magnet quantity can be controlled by adjustment module quantity, for producing continual and steady magnetic field.
The fixed copper coin 3 is fixed on casing 1；Mobile copper coin 7 is fixed on mass 8, as shown in Figure 3,4.Installation
Mode can be used and is mechanically connected, and copper coin quantity can be controlled by adjusting copper coin module number.
The casing 1 is connected by reserved connecting screw hole 2 with agent structure, by adjusting connected mode, can be achieved vertical
It is and horizontal more flexible to vibration damping, vibration absorber mounting means.As shown in Figure 1, 2.
The support bar 6 is connected with casing 1, increases the rigidity of casing 1, avoids casing 1 from producing local deformation, connected mode can
Using mechanical connection；Support bar 6 is that connecting rod 11 provides hinged support simultaneously, and mechanical lever transmission device is formed with it.As Fig. 3,
4th, shown in 6.
Residing connecting rod 11 is connected by be hinged screw 12 with support bar 6, passes through driving bearing pin 13 and permanent magnet 4 and mass
8 are connected, and realize the linkage of permanent magnet 4 and mass 8.As shown in Fig. 3,4,7.
The following aspects is should be noted in the present embodiment：
First, the device should be arranged on the larger opening position of controlled structural vibration, to ensure that device can play one's part to the full.
2nd, the length and rigidity of spring, and mass quality should be rough according to the basic frequency progress of controlled structure in advance
Selection.
3rd, casing and during internal components designs, enough spacing should be reserved between magnet, mass and casing, are protected
Demonstrate,prove magnet and mass can be on guide rail slidably.
4th, casing should seal closely after installation is complete, and especially in bridge structure, working environment is complicated severe, Ying Bao
It is not affected by the card internals course of work.
It is described above to be full of the preferred embodiment of the present invention, it should be noted that：For those skilled in the art
For, some improvement still can be made under the premise without departing from the principles of the invention, these improvement also should be regarded as the present invention's
Protection domain.
Claims (8)
- A kind of 1. current vortex vibration absorber using lever principle, it is characterised in that：The vibration absorber includes casing (1), connection Screw (2), fixed copper coin (3), permanent magnet (4), permanent magnet guide rail (5), support bar (6), mobile copper coin (7), mass (8), Mass guide rail (9), spring (10), connecting rod (11), be hinged screw (12), driving bearing pin (13)；Wherein, on permanent magnet (4) has Lower two, it is connected respectively by permanent magnet guide rail (5) with casing (1)；Mass (8) passes through mass guide rail (9) and casing (1) Connection；Spring (10) is arranged on mass (8) both sides, is enclosed on mass guide rail (9)；Mass (8), permanent magnet (4) with Casing (1) reserves enough spacing, so that permanent magnet (4) can be on permanent magnet guide rail (5) slidably；Mass (8) Can be on mass guide rail (9) slidably, fixed copper coin (3) has two pieces, the top and bottom being separately fixed in casing (1) Portion；Mobile copper coin (7) has two pieces, is separately fixed at the upper and lower part of mass (8)；Connecting rod (11) passes through driving bearing pin respectively (13) it is be hinged with permanent magnet (4), mass (8).
- A kind of 2. current vortex vibration absorber using lever principle as claimed in claim 1, it is characterised in that：The permanent magnet (4), support bar (6), mass (8), connecting rod (11), be hinged screw (12), driving bearing pin (13) composition mechanical lever transmission dress Put, can effectively amplify the speed of related movement between permanent magnet (4) and mobile copper coin (7), improve eddy current damper power consumption energy Power.
- A kind of 3. current vortex vibration absorber using lever principle as claimed in claim 1, it is characterised in that：The support bar (6) position is freely adjustable, by adjusting the position of support bar (6), changes the position and lever of connecting rod (11) central pivot point Torque arm length, the mass parameter of TMD dampers is adjusted, vibration absorber is applicable frequency range more extensive.
- A kind of 4. current vortex vibration absorber using lever principle as claimed in claim 1, it is characterised in that：All components are equal It is installed in casing (1), casing (1) is formed to internals and protected, and greatly extends the service life of the vibration absorber；And And connecting screw hole (2) is reserved as required in casing (1), make device installation more convenient.
- A kind of 5. current vortex vibration absorber using lever principle as claimed in claim 1, it is characterised in that：Permanent magnet guide rail (5) contact position between permanent magnet (4) and mass guide rail (9) and mass (8) scribbles lubricant, reduces its phase To frictional force, reduce the deterioration inside device.
- A kind of 6. current vortex vibration absorber using lever principle as claimed in claim 1, it is characterised in that：Permanent magnet (4) Using neodymium iron boron, the material has excellent magnetic property, can produce continual and steady magnetic field.
- A kind of 7. current vortex vibration absorber using lever principle as claimed in claim 1, it is characterised in that：Permanent magnet guide rail (5), mass guide rail (9) and connecting rod (11) use non-magnetic material, ensure during each transmission operation not by magnetic force shadow Ring.
- A kind of 8. current vortex vibration absorber using lever principle as claimed in claim 7, it is characterised in that：It is described without magnetic Material is without magnetic aluminum alloy materials, carbon fibre material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678070.6A CN107355509B (en) | 2017-08-10 | 2017-08-10 | A kind of current vortex vibration absorber using lever principle |
| PCT/CN2018/084954 WO2019029198A1 (en) | 2017-08-10 | 2018-04-27 | Eddy current vibration damping device utilizing principle of leverage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678070.6A CN107355509B (en) | 2017-08-10 | 2017-08-10 | A kind of current vortex vibration absorber using lever principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107355509A true CN107355509A (en) | 2017-11-17 |
| CN107355509B CN107355509B (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710678070.6A Active CN107355509B (en) | 2017-08-10 | 2017-08-10 | A kind of current vortex vibration absorber using lever principle |
Country Status (2)
| Country | Link |
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| CN (1) | CN107355509B (en) |
| WO (1) | WO2019029198A1 (en) |
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|---|---|---|---|---|
| CN108425986A (en) * | 2018-04-17 | 2018-08-21 | 中铁大桥科学研究院有限公司 | Drum type brake electric eddy-current damping device, damping adjusting method and bridge vibration-proof structure |
| CN108571552A (en) * | 2018-07-25 | 2018-09-25 | 上海大学 | A kind of adjustable single-degree-of-freedom damper of rigidity |
| CN108797311A (en) * | 2018-07-18 | 2018-11-13 | 武汉理工大学 | A kind of eddy current tuned mass damper and design method for cable way bridge |
| CN109114159A (en) * | 2018-09-27 | 2019-01-01 | 兰州理工大学 | Current vortex vibration absorber and installation method suitable for wind electricity blade |
| CN109184018A (en) * | 2018-10-18 | 2019-01-11 | 大连理工大学 | A kind of multidimensional eddy current tuned mass damper |
| WO2019029198A1 (en) * | 2017-08-10 | 2019-02-14 | 东南大学 | Eddy current vibration damping device utilizing principle of leverage |
| CN109505922A (en) * | 2018-11-26 | 2019-03-22 | 东北大学 | A kind of multistable nonlinear energy trap with piecewise linearity beam and permanent magnetism negative stiffness |
| WO2019119705A1 (en) * | 2017-12-21 | 2019-06-27 | 东南大学 | Eddy current three-dimensional damping device |
| CN110499836A (en) * | 2019-09-20 | 2019-11-26 | 大连理工大学 | Self-resetting tuned mass damper based on current vortex and marmem technology |
| CN110805651A (en) * | 2019-10-28 | 2020-02-18 | 华中科技大学 | Self-adaptive adjusting eddy current damper |
| CN111373172A (en) * | 2017-11-29 | 2020-07-03 | 日本制铁株式会社 | Vortex type vibration damper |
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| WO2021051374A1 (en) * | 2019-09-20 | 2021-03-25 | 大连理工大学 | Coupling beam shear 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 |
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| CN116066512A (en) * | 2023-01-17 | 2023-05-05 | 哈尔滨工程大学 | Vibration damper of inner swinging type eddy current damper of wind turbine tower |
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| WO2019029198A1 (en) * | 2017-08-10 | 2019-02-14 | 东南大学 | Eddy current vibration damping device utilizing principle of leverage |
| CN111373172A (en) * | 2017-11-29 | 2020-07-03 | 日本制铁株式会社 | Vortex type vibration damper |
| WO2019119705A1 (en) * | 2017-12-21 | 2019-06-27 | 东南大学 | Eddy current three-dimensional damping device |
| CN108425986A (en) * | 2018-04-17 | 2018-08-21 | 中铁大桥科学研究院有限公司 | Drum type brake electric eddy-current damping device, damping adjusting method and bridge vibration-proof structure |
| CN108797311A (en) * | 2018-07-18 | 2018-11-13 | 武汉理工大学 | A kind of eddy current tuned mass damper and design method for cable way bridge |
| CN108571552A (en) * | 2018-07-25 | 2018-09-25 | 上海大学 | A kind of adjustable single-degree-of-freedom damper of rigidity |
| CN109114159B (en) * | 2018-09-27 | 2020-05-08 | 兰州理工大学 | Eddy current vibration damper suitable for wind power blade and mounting method |
| CN109114159A (en) * | 2018-09-27 | 2019-01-01 | 兰州理工大学 | Current vortex vibration absorber and installation method suitable for wind electricity blade |
| CN109184018A (en) * | 2018-10-18 | 2019-01-11 | 大连理工大学 | A kind of multidimensional eddy current tuned mass damper |
| CN109184018B (en) * | 2018-10-18 | 2023-12-15 | 大连理工大学 | Multi-dimensional eddy current tuning mass damper |
| CN109505922A (en) * | 2018-11-26 | 2019-03-22 | 东北大学 | A kind of multistable nonlinear energy trap with piecewise linearity beam and permanent magnetism negative stiffness |
| CN109505922B (en) * | 2018-11-26 | 2020-06-05 | 东北大学 | Multistable nonlinear energy trap with piecewise linear beam and permanent magnet negative stiffness |
| US11293175B2 (en) | 2019-09-20 | 2022-04-05 | Dalian University Of Technology | Self-resetting tuned mass damper based on eddy current and shape memory alloy technology |
| US11754140B2 (en) | 2019-09-20 | 2023-09-12 | Dalian University Of Technology | Coupling beam eddy current damper with shear displacement amplification |
| WO2021051374A1 (en) * | 2019-09-20 | 2021-03-25 | 大连理工大学 | Coupling beam shear 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 |
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| CN110499836A (en) * | 2019-09-20 | 2019-11-26 | 大连理工大学 | Self-resetting tuned mass damper based on current vortex and marmem technology |
| CN110805651A (en) * | 2019-10-28 | 2020-02-18 | 华中科技大学 | Self-adaptive adjusting eddy current damper |
| CN111677810B (en) * | 2020-05-27 | 2021-09-21 | 哈尔滨工业大学 | Passive vibration isolation system for optical payload |
| CN111677810A (en) * | 2020-05-27 | 2020-09-18 | 哈尔滨工业大学 | Passive vibration isolation system for optical payload |
| CN114763817A (en) * | 2021-01-14 | 2022-07-19 | 南京理工大学 | Inertial container device with rod type structure |
| CN114763817B (en) * | 2021-01-14 | 2024-04-09 | 南京理工大学 | Inertial container device with rod type structure |
| CN113323989A (en) * | 2021-05-25 | 2021-08-31 | 中国农业大学 | Vibration reduction device for armrest frame of electric mini-tiller and automatic electromagnetic damping optimization method |
| CN113803394A (en) * | 2021-09-16 | 2021-12-17 | 北京航空航天大学 | Isolator based on eddy current effect and method |
| CN116066512A (en) * | 2023-01-17 | 2023-05-05 | 哈尔滨工程大学 | Vibration damper of inner swinging type eddy current damper of wind turbine tower |
| CN116066512B (en) * | 2023-01-17 | 2023-10-24 | 哈尔滨工程大学 | Vibration damper of inner swinging type eddy current damper of wind turbine tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107355509B (en) | 2019-07-30 |
| WO2019029198A1 (en) | 2019-02-14 |
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