CN106337591A - Novel pendulum-type eddy current damping tuned mass vibration absorber - Google Patents
Novel pendulum-type eddy current damping tuned mass vibration absorber Download PDFInfo
- Publication number
- CN106337591A CN106337591A CN201610870649.8A CN201610870649A CN106337591A CN 106337591 A CN106337591 A CN 106337591A CN 201610870649 A CN201610870649 A CN 201610870649A CN 106337591 A CN106337591 A CN 106337591A
- Authority
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- China
- Prior art keywords
- permanent magnet
- conductor plate
- current damping
- type eddy
- pendulum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
Abstract
The invention discloses a novel pendulum-type eddy current damping tuned mass vibration absorber, comprising a frame connected with a structure to be damped, a rigid suspender having the upper end articulated to the top of the frame, and a permanent magnet arranged at the bottom of the rigid suspender, wherein a mass block is articulated to the body of the rigid suspender above the permanent magnet; a conductor plate for conducting electricity is arranged at the bottom of the frame; the upper surface of the conductor plate is an arc surface, and when the permanent magnet swings to any position, the clearance between the permanent magnet and the conductor plate is not changed. By changing the installation position of the permanent magnet and increasing the damping coefficient via the lever principle, the eddy current damping effect is strengthened. The clearance between the permanent magnet and the conductor plate is constant, so that the damping coefficient is not reduced and the damping effect is not influenced. The vibration absorber is simple in installation and maintenance.
Description
Technical field
The invention belongs to structures under wind, seismic resistance field, specifically related to a kind of novel pendulum-type eddy-current damping tuning quality subtracts
Shake device.
Background technology
The mainstream technology of suppression heavy construction structure vibration is still that reliability highest passively controls at present, and principal mode has
Tuning mass bumper (tuned mass damper, abridge tmd) and various energy-consumption dampers etc..The tune of suppression level vibration
Humorous mass bumper is generally divided into guide rail spring and two kinds of pendulum-type.Because guide rail support mass has stiction, therefore greatly
Type tuning mass bumper typically adopts pendulum-type, and (such as Taiwan 101 mansion, its mass weighs 660 tons；Shanghai Center Building,
Its mass weighs 1000 tons).
(for example Taiwan 101 is big mostly to adopt Effects of Viscous Fluid Damper before the damping element of pendulum-type tuning mass bumper
Tall building).Chen Zheng has invented clearly permanent-magnet type eddy current tuned mass damper (patent cn101761146b), because it does not have workflow
Body, is not in contact between damped part, thus the mechanical connection complexity eliminating viscous damper is led with initial frictional is excessive
The low problem of vibration damping sensitivity causing, existing a large amount of case histories at home, including being applied to 1000 tons of Shanghai Center Building
In pendulum-type tuning mass bumper.
Chinese patent 201310080464.3 discloses a kind of pendulum-type eddy current tuned mass damper device, including frame
The long adjuster of frame, cable wire, rope, mass, permanent magnet adjusting bracket, permanent magnet, copper coin, magnetic conduction iron plate, copper coin and magnetic conduction iron plate are adjusted
Section frame, stop and limited displacement damper, mass is bolted by steel plate and makes, by steel cable suspended on framework, rope
Long adjuster is adjusted to the length of cable wire, and permanent magnet adjusting bracket is arranged on mass bottom, and magnetic conduction iron plate is superimposed on copper coin
Bottom, copper coin and magnetic conduction iron plate are bolted on copper coin and magnetic conduction iron plate adjusting bracket, and this copper coin and magnetic conduction iron plate are adjusted
Frame is arranged on architecture basics, and stop is arranged on mass bottom periphery, and limited displacement damper one end connects on the stopper, separately
On the architecture basics attached below of one end.This invention has life-span length, and whole tmd structural friction is almost nil, and sensitivity is high
The advantages of.However, it adopts linkage to adjust the gap of permanent magnet and copper coin, undoubtedly increased the complexity of total
And coefficient of friction, some lost superiority of pendulum-type eddy-current damping tuning mass bumper, and linkage is to tuning
The frequency of mass bumper also can produce impact.
And, the eddy current tuned mass shock absorber of the prior art including above-mentioned patent all has following defects that
1. as shown in Figure 1, 2, permanent magnet 7 is installed on mass 3 bottom, is joined directly together with mass 3, and conductor plate 8 is located at
Permanent magnet 7 lower section keeps certain interval with permanent magnet 7.When angle of oscillation increases, the overall lifting of mass 3, and then drive permanent magnet 7
Lifting, permanent magnet 7 is increased with conductor plate 8 gap, leads to eddy current effect to weaken, eddy-current damping coefficient strongly reduces, and reduces
The damping property of device.
2. because the gap between mass 3 and conductor plate 8 is little, the mounting process of permanent magnet 7 is poor, between so little
Permanent magnet 7 is installed in gap, staff is difficult to operate.And the magnetic of permanent magnet 7 is big, also increases installation difficulty.
Content of the invention
For the problems referred to above, the present invention is intended to provide one kind can not only ensure shock absorber damped coefficient in the course of the work
Do not decline moreover it is possible to increase the pendulum-type eddy-current damping tuning mass bumper of damped coefficient.
The technical scheme of solve problem of the present invention is: a kind of novel pendulum-type eddy-current damping tuning mass bumper, including
The framework being connected with structure to be damped, is also included upper end and is articulated with the rigid hanger of frame roof, is arranged at and rigidly hangs
The permanent magnet of bar bottom；
It is hinged with mass on rigid hanger shaft above permanent magnet；
Described base of frame is provided with for conductive conductor plate；
The upper surface of described conductor plate is cambered surface, has gap, and permanent magnet swings to arbitrarily between permanent magnet and conductor plate
During position, the gap between permanent magnet and conductor plate is constant.
In such scheme, when structure produces vibration due to wind shake or earthquake, due to inertia, it is hinged on rigid hanger
Mass contrary with framework (structure) swaying direction.Because mass is generally skyscraper or structure 1～2% matter itself
Amount, the phase difference with structure motion itself during its motion, the motion to structure has inhibition, can effectively reduce structure
The Oscillation Amplitude of body and acceleration.The mechanical energy of structure vibration causes mass to swing by rigid hanger, and then drives forever
Magnet produces electromagnetic induction with conductor plate, produces current vortex in conductor plate, and current vortex produces and permanent magnet magnetic field pole itself again
Property contrary electromagnetic field, this two opposite polarity electromagnetic fields hinder mutually motion, produce eddy-current damping effect.Mass is put
The dynamic heat energy being converted into current vortex heating, heat energy passes through the conduction such as air and consumes.Mass acts in eddy-current damping effect
Under, swing speed is more and more slower, angle less and less until stop.In above procedure, energy during structure vibration finally turns
Turn to the heat energy of current vortex heating, realize power consumption effect, reach vibration damping purpose.
Described mass can be formed by steel plate stacking, is connected with each other, steel plate number is by required quality
Size determines.
Rigid hanger in swing process, gap remained constant between permanent magnet and conductor plate, when pivot angle is very big, energy
Enough ensure that damped coefficient does not decline.The mode that clearance constant can be kept has multiple, pendulum radiuses such as according to permanent magnet, will
The cambered surface of conductor plate is designed, and is always ensured that the working face of permanent magnet swings to the gap phase all with conductor plate for any position
With.
The pendulum length of mass can be adjusted by adjusting the articulated position of mass and rigid hanger, thus adjusting vibration damping
Frequency.
Can by increase described permanent magnet to mass and the pin joint of rigid hanger distance, using lever principle Lai
Increase damped coefficient so that effectiveness in vibration suppression is more preferable.
Further, described rigid hanger bottom is connected with permanent magnet installing plate, and this permanent magnet installing plate lower surface is provided with
Extend to the chute at permanent magnet installing plate two ends, permanent magnet is provided with can be with the projection of chute cooperation, and permanent magnet can be from permanent magnet
The either end insertion chute of installing plate, and can fix after sliding in chute.
In this further improved scheme, the mounting means of permanent magnet, using by the way of the grafting of chute two ends, can drop
Low installation difficulty.And traditional mode is little due to the gap between mass and conductor plate, permanent magnet mounting process is poor.
Preferably, described permanent magnet installing plate is provided with a plurality of chute, and every chute is equipped with two permanent magnets, and forever
The n pole of magnet, s pole are spaced on same working face, and an extremely outside permanent magnet side of n is that a s is extremely outside forever
Magnet.By optimizing the arrangement mode of permanent magnet, to obtain maximum damped coefficient.
In a kind of specific scheme, described rigid hanger is provided with four, hinged with four angles of mass respectively.
For optimizing magnetic circuit, between conductor plate and base of frame, it is provided with magnetic conductive board.
Described magnetic conductive board is pure iron or mild steel.
Preferably, the interstice coverage between described permanent magnet and conductor plate is 2～50mm.
Pass through oscillating bearing between described rigid hanger and frame roof hinged, pass through between rigid hanger and mass to close
Bearings are hinged.
Described conductor plate material is copper or aluminium or aluminium alloy.
The remarkable result of the present invention is:
1. change permanent magnet installation site, increase damped coefficient using lever principle, strengthen eddy-current damping effect.
2. rigid hanger is in swing process, and the gap remained constant between permanent magnet and conductor plate, even if pivot angle is very big
When it is also possible to ensure damped coefficient do not decline, do not affect damping.
3., using by the way of the grafting of chute two ends, reducing installation difficulty, safeguard more just for the mounting means of permanent magnet
Prompt.
Brief description
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 structure chart when static for the current vortex tmd of prior art.
Fig. 2 is the structure chart of the current vortex tmd swing state of prior art.
Fig. 3 is structure chart when current vortex tmd of the present invention is static.
Fig. 4 is the structure chart of current vortex tmd swing state of the present invention.
Fig. 5 is the partial view in Fig. 3.
Fig. 6 is the stereogram of permanent magnetism mounting structure.
In figure: 1- framework, 2- rigid hanger, 3- mass, 4- permanent magnet installing plate, 5- chute, 6- is raised, 7- permanent magnetism
Body, 8- conductor plate, 9- magnetic conductive board, 10,11- oscillating bearing.
Specific embodiment
As illustrated in figures 3-6, a kind of novel pendulum-type eddy-current damping tuning mass bumper, including with structure to be damped
Body phase connect framework 1, be articulated with the rigid hanger 2 at framework 1 top by oscillating bearing 10, be arranged at rigid hanger 2 bottom
Permanent magnet 7.
Oscillating bearing 11 is crossed on rigid hanger 2 shaft above permanent magnet 7 and is hinged with mass 3.Described rigid hanger 2
It is provided with four, hinged with four angles of mass 3 respectively.
Described framework 1 bottom is provided with for conductive conductor plate 8.Conductor plate 8 material is copper or aluminium or aluminium alloy.Described
The upper surface of conductor plate 8 is cambered surface.There is gap between permanent magnet 7 and conductor plate 8, and when permanent magnet 7 swings to optional position, forever
Gap between magnet 7 and conductor plate 8 is constant.Preferably, the interstice coverage between described permanent magnet 7 and conductor plate 8 be 2～
50mm.
Described rigid hanger 2 bottom is connected with permanent magnet installing plate 4, and this permanent magnet installing plate 4 lower surface is provided with and extends to
The chute 5 at permanent magnet installing plate 4 two ends.Permanent magnet 7 is provided with can be with the projection 6 of chute 5 cooperation.Permanent magnet 7 can be from permanent magnet
The either end insertion chute 5 of installing plate 4, and can fix after sliding in chute 5.
In a kind of preferred scheme, described permanent magnet installing plate 4 is provided with a plurality of chute 5, and every chute 5 is equipped with two
Individual permanent magnet 7.And the n pole of permanent magnet 7, s pole are spaced on same working face, an extremely outside permanent magnet side of n is
The extremely outside permanent magnet of one s.
It is provided with magnetic conductive board 9 between conductor plate 8 and framework 1 bottom.Magnetic conductive board 9 is pure iron or mild steel.
The pendulum length of mass 3 in said structure, can be adjusted by adjusting the articulated position of mass 3 and rigid hanger 2,
Thus adjusting the frequency of vibration damping.Arrive the distance of mass 3 and the pin joint of rigid hanger 2 by increasing described permanent magnet 4, utilize
Lever principle is increasing damped coefficient so that effectiveness in vibration suppression is more preferable.
Assume the present invention prior art shown in Fig. 1,2 for the structure compared with, have identical permanent magnet, conductor plate and
Gap.And set permanent magnet 7 and be directly installed on the damped coefficient that mass 3 bottom can produce as c0If, then using this specially
The structure of profit, the damped coefficient c of tmd1For:
L in formula (1)0Arrive the distance of oscillating bearing 11, l for oscillating bearing 101Arrive the distance of permanent magnet 7 for oscillating bearing 10.
It can be deduced that installation site due to changing permanent magnet 7 from formula (1), using lever principle, damped coefficient can be changed,
Thus improving effectiveness in vibration suppression.
When structure produces vibration due to wind shake or earthquake, due to inertia, it is hinged on the mass 3 on rigid hanger 2
Contrary with framework 1 swaying direction.Because mass 3 be generally skyscraper or structure 1～2% mass itself, its motion when and
The phase difference of structure motion itself, the motion to structure has inhibition, can effectively reduce the Oscillation Amplitude of structure
And acceleration.The mechanical energy of structure vibration causes mass 3 to swing by rigid hanger 2, and then drives permanent magnet 4 and conductor
Plate 8 produces electromagnetic induction, produces current vortex in conductor plate 8, and current vortex produces contrary with polarity of the magnetic field of permanent magnet 7 itself again
Electromagnetic field, this two opposite polarity electromagnetic fields hinder mutually motion, produce eddy-current damping effect.Mass 3 swings conversion
The heat energy generating heat for current vortex, heat energy passes through the conduction such as air and consumes.Mass 3, under the effect of eddy-current damping effect, is put
Dynamic speed is more and more slower, angle less and less until stop.In above procedure, energy during structure vibration is eventually converted into electricity
The heat energy of eddy-current heating, realizes power consumption effect, reaches vibration damping purpose.
Claims (9)
1. a kind of novel pendulum-type eddy-current damping tuning mass bumper, including the framework being connected with structure to be damped
(1) it is characterised in that: also include upper end and be articulated with the rigid hanger (2) at framework (1) top, be arranged at rigid hanger (2) bottom
Permanent magnet (7)；
Rigid hanger (2) shaft above permanent magnet (7) is hinged with mass (3)；
Described framework (1) bottom is provided with for conductive conductor plate (8)；
The upper surface of described conductor plate (8) is cambered surface, has gap between permanent magnet (7) and conductor plate (8), and permanent magnet (7) pendulum
When moving optional position, the gap between permanent magnet (7) and conductor plate (8) is constant.
2. novel pendulum-type eddy-current damping tuning mass bumper according to claim 1 it is characterised in that: described rigidity
Suspension rod (2) bottom is connected with permanent magnet installing plate (4), and this permanent magnet installing plate (4) lower surface is provided with and extends to permanent magnet installation
The chute (5) at plate (4) two ends, permanent magnet (7) is provided with the projection (6) that can coordinate with chute (5), and permanent magnet (7) can be from permanent magnetism
Either end insertion chute (5) of body installing plate (4), and can fix after sliding in chute (5).
3. novel pendulum-type eddy-current damping tuning mass bumper according to claim 1 it is characterised in that: described permanent magnetism
Body installing plate (4) is provided with a plurality of chute (5), and every chute (5) is equipped with two permanent magnets (7), and the n of permanent magnet (7)
Pole, s pole are spaced on same working face, and an extremely outside permanent magnet side of n is the extremely outside permanent magnet of a s.
4. novel pendulum-type eddy-current damping tuning mass bumper according to claim 1 it is characterised in that: described rigidity
Suspension rod (2) is provided with four, hinged with four angles of mass (3) respectively.
5. novel pendulum-type eddy-current damping tuning mass bumper according to claim 1 it is characterised in that: conductor plate
(8) it is provided with magnetic conductive board (9) and framework (1) bottom between.
6. novel pendulum-type eddy-current damping tuning mass bumper according to claim 5 it is characterised in that: described magnetic conduction
Plate (9) is pure iron or mild steel.
7. novel pendulum-type eddy-current damping tuning mass bumper according to claim 1 it is characterised in that: described permanent magnetism
Interstice coverage between body (7) and conductor plate (8) is 2～50mm.
8. novel pendulum-type eddy-current damping tuning mass bumper according to claim 1 it is characterised in that: described rigidity
Pass through oscillating bearing (10) between suspension rod (2) and framework (1) top hinged, pass through between rigid hanger (2) and mass (3) to close
Bearings (11) are hinged.
9. novel pendulum-type eddy-current damping tuning mass bumper according to claim 1 it is characterised in that: described conductor
Plate (8) material is copper or aluminium or aluminium alloy.
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| CN201610870649.8A CN106337591B (en) | 2016-09-30 | 2016-09-30 | A kind of novel pendulum-type eddy-current damping tuning mass bumper |
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| CN201610870649.8A CN106337591B (en) | 2016-09-30 | 2016-09-30 | A kind of novel pendulum-type eddy-current damping tuning mass bumper |
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| CN106337591B CN106337591B (en) | 2019-01-11 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989130A (en) * | 2017-05-09 | 2017-07-28 | 同济大学 | A kind of half active mono-pendulum type eddy current tuned mass damper |
| CN107268822A (en) * | 2017-06-19 | 2017-10-20 | 同济大学 | A kind of current vortex liquid condenser |
| CN107355509A (en) * | 2017-08-10 | 2017-11-17 | 东南大学 | A kind of current vortex vibration absorber using lever principle |
| CN107762229A (en) * | 2017-11-21 | 2018-03-06 | 山东大学 | The current vortex dissipative damping device of controlled level and torsional direction |
| CN107974929A (en) * | 2018-01-02 | 2018-05-01 | 湖南省潇振工程科技有限公司 | Miniature tuned mass damper |
| CN108221874A (en) * | 2017-12-25 | 2018-06-29 | 洛阳水利勘测设计有限责任公司 | A kind of large-sized aqueduct and construction method using inertia compensation system antidetonation |
| CN110056241A (en) * | 2019-05-28 | 2019-07-26 | 广州大学 | A kind of three-dimensional lever damper |
| CN111021568A (en) * | 2019-11-29 | 2020-04-17 | 中国电力科学研究院有限公司 | Tuned mass damper for controlling eddy current through vibration of fan tower |
| CN112343196A (en) * | 2020-10-10 | 2021-02-09 | 广东省建筑设计研究院有限公司 | Multistage variable damping damper |
| CN113167067A (en) * | 2018-11-07 | 2021-07-23 | 毛雷尔工程有限公司 | Mass damper for damping structural vibrations, structure having such a mass damper and method for adjusting the natural frequency of a mass damper |
| CN113719578A (en) * | 2021-08-27 | 2021-11-30 | 华北水利水电大学 | Damping vibration absorber |
| CN113863526A (en) * | 2021-09-18 | 2021-12-31 | 湖南省潇振工程科技有限公司 | Pendulum type inerter tuned mass eddy current damper |
| CN115419183A (en) * | 2022-08-31 | 2022-12-02 | 湖南省潇振工程科技有限公司 | Tuned mass damper and damper frequency modulation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989130A (en) * | 2017-05-09 | 2017-07-28 | 同济大学 | A kind of half active mono-pendulum type eddy current tuned mass damper |
| CN107268822A (en) * | 2017-06-19 | 2017-10-20 | 同济大学 | A kind of current vortex liquid condenser |
| CN107355509B (en) * | 2017-08-10 | 2019-07-30 | 东南大学 | A kind of current vortex vibration absorber using lever principle |
| CN107355509A (en) * | 2017-08-10 | 2017-11-17 | 东南大学 | A kind of current vortex vibration absorber using lever principle |
| CN107762229A (en) * | 2017-11-21 | 2018-03-06 | 山东大学 | The current vortex dissipative damping device of controlled level and torsional direction |
| CN108221874A (en) * | 2017-12-25 | 2018-06-29 | 洛阳水利勘测设计有限责任公司 | A kind of large-sized aqueduct and construction method using inertia compensation system antidetonation |
| CN107974929A (en) * | 2018-01-02 | 2018-05-01 | 湖南省潇振工程科技有限公司 | Miniature tuned mass damper |
| CN107974929B (en) * | 2018-01-02 | 2018-12-21 | 湖南省潇振工程科技有限公司 | Miniature tuned mass damper |
| CN113167067A (en) * | 2018-11-07 | 2021-07-23 | 毛雷尔工程有限公司 | Mass damper for damping structural vibrations, structure having such a mass damper and method for adjusting the natural frequency of a mass damper |
| CN110056241A (en) * | 2019-05-28 | 2019-07-26 | 广州大学 | A kind of three-dimensional lever damper |
| CN110056241B (en) * | 2019-05-28 | 2020-12-08 | 广州大学 | Three-dimensional lever type damper |
| CN111021568A (en) * | 2019-11-29 | 2020-04-17 | 中国电力科学研究院有限公司 | Tuned mass damper for controlling eddy current through vibration of fan tower |
| CN112343196A (en) * | 2020-10-10 | 2021-02-09 | 广东省建筑设计研究院有限公司 | Multistage variable damping damper |
| CN112343196B (en) * | 2020-10-10 | 2022-05-17 | 广东省建筑设计研究院有限公司 | Multistage variable damping attenuator |
| CN113719578A (en) * | 2021-08-27 | 2021-11-30 | 华北水利水电大学 | Damping vibration absorber |
| CN113863526A (en) * | 2021-09-18 | 2021-12-31 | 湖南省潇振工程科技有限公司 | Pendulum type inerter tuned mass eddy current damper |
| CN113863526B (en) * | 2021-09-18 | 2022-11-25 | 湖南省潇振工程科技有限公司 | Pendulum type inerter tuned mass eddy current damper |
| CN115419183A (en) * | 2022-08-31 | 2022-12-02 | 湖南省潇振工程科技有限公司 | Tuned mass damper and damper frequency modulation method |
| CN115419183B (en) * | 2022-08-31 | 2023-10-20 | 湖南省潇振工程科技有限公司 | Tuned mass damper and damper frequency modulation method |
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