CN109972762A - A kind of used matter damper of tuner-type electromagnetism - Google Patents
A kind of used matter damper of tuner-type electromagnetism Download PDFInfo
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- CN109972762A CN109972762A CN201910358695.3A CN201910358695A CN109972762A CN 109972762 A CN109972762 A CN 109972762A CN 201910358695 A CN201910358695 A CN 201910358695A CN 109972762 A CN109972762 A CN 109972762A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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Abstract
The invention discloses a kind of tuner-type electromagnetism to be used to matter damper.The invention mainly comprises the ball screw framework being set in outer cylinder, ball screw framework upper end is connect with gearbox and rotary flyweights, and gearbox is fixed by position limit device；Further include the inner cylinder for being set to outer barrel lower end, lower caging device is provided with outside inner cylinder, inner cylinder can move up and down linearly in lower caging device；Inner cylinder upper end and ball screw framework are connected, and ball screw framework is driven to move up and down linearly；It is configured in order coil and permanent magnet from outside to inside in inner cylinder inside lower portions, the magnetizer that can be moved up and down linearly is fixed in permanent magnet, magnetizer reaches outside the lower end of interior barrel and an external barrel, magnetizer lower end is fixed with lower attachment and its connecting plate, and spring is affixed with connecting plate and inner cylinder lower end and is sleeved on outside magnetizer.The present invention is suitable for having the civil engineering structure of relative displacement, such as suspension cable, the junction Loads of Long-span Bridges Ta Liang, at skyscraper relative storey displacement etc..
Description
Technical field
The invention belongs to structural vibration control technology fields, and in particular to a kind of structural vibration control suitable for civil engineering
The tuner-type electromagnetism of system is used to matter damper.
Background technique
In by natural environment under the external actions such as high wind, heavy rain, earthquake, civil engineering structure, which is easy to produce, substantially to shake
It is dynamic, structural damage is generated, so that influencing safety and the comfort of structure, while being likely to reduced the service life of structure.Such as
What mitigates structural vibration problem caused by external influence, becomes the hot spot of domestic and foreign scholars' research.So far, it learns both at home and abroad
Whether person studies and develops numerous structure control techniques, need extra power that can be divided into passively according to the control measure taken
Control, active control, semi- active control and mixing control etc..Structure uniformity is a kind of structure control for not needing extra power
Technology processed can be divided into basic vibration isolation and energy consumption energy-obsorbing and damping two major classes, such as shock isolating pedestal and tuned mass damper.Tuning quality
Damper is one of common vibration absorber, but since the damping property of tuned mass damper is directly proportional to its mass ratio, more
Increase the damping property of structure, the mass ratio of damper must be increased, reduce the performance of tuned mass damper to a certain extent.
Structure Active Control is in structure excited target vibration processes, to apply active controlling force to structure, thus fast using extra power
Fast vibration damping.Semi- active control has the advantages that passive control and adjustability of active control system, becomes civil engineering vibration isolation, subtracts
The important technology of vibration and Study on Vibration Control and engineer application, however since semi- active control needs dedicated sensor and control
Control equipment gives damper input energy, also limits the application of semi- active control technology.
2002, Smith proposed the concept of a kind of " used matter " (Inerter), and its essence is one kind by rotation or to be used to
Property flywheel amplification quality pass through container.Currently, used Quality Research is concentrated mainly on automotive suspension, train suspension etc. and subtracts vibration isolation side
Face.To solve the imbalance of damper resonance, to adaptability and active control and half master of various frequencies and form dynamic excitation
The problem of dynamic extra power supply, domestic and foreign scholars actively develop self energizing semi- active control, damper frequency modulation and adjust damping ratio
And the research of other tuning aspects.Such as the patent No. 201810425253.1, grant number CN108374330A, entitled " half is main
Dynamic electromagnetic resonance tuned mass damper ", including mass block, permanent magnet linear generator and spring.The invention realizes damping
The semi- active control of power real-time, tunable and the recycling multi-functional of vibrational energy, with efficiency of energy collection height, structure is simple, subtracts
The advantages that control performance that shakes is good, applied widely.The patent No. 201810390815.3, grant number CN 108560754A are entitled
" a kind of eddy current tuned mass damper of half active variable mass variable damping ", by the tuning quality damper portion of half active variable mass
Divide, half active power transformation eddy current damping part and control axis part form.The device can convert the vibrational energy of structure to
The vibrational energy of the mechanical energy consumption structure of mass block, while current vortex, current vortex fever are converted by the mechanical energy of mass block
The energy of further consumption s tructure vibration.Patent No. 201820083557.X, grant number CN207974602U, entitled " one kind
Windmill tower frame tuned mass damper ", comprising: bracket, damping block, sunpender and mass block；In the utility model, work as sunpender
When upper end and damping block collide, damping block can effectively consume vibrational energy, increase damping effect.The patent No.
201710463394.8, grant number CN107327038A, a kind of entitled " eddy current tuned mass based on vibration energy regeneration
Damper " is fixed on the permanent magnet of the middle of the base by pedestal, by support, is set in permanent magnet outside and passes through Flexible element
The mass block connecting with pedestal, the invention replace traditional viscous damping with eddy-current damping, can be improved the stabilization of damper
Property and durability, simplify damper design.The patent No. 201720357813.5, grant number CN206737178U, entitled " one
Half active mono-pendulum type tuned mass damper of kind ", is made of mono-pendulum type tuned mass damper and servo-control system.This is practical
The novel accurate adjusting for being able to achieve mono-pendulum type tuned mass damper frequency improves effectiveness in vibration suppression, and installation easy to maintain, durable
Property it is good etc..Above-mentioned tuned mass damper is the ratio between damper quality and structure, realizes mass ratio.When the structure scale of construction
When larger, the quality of required tuned mass damper is also very big；However, being difficult in Practical Project using large volume matter
Amount.In view of the above-mentioned problems, the virtual mass of proposed adoption rotating inertial mass of the present invention, realizes the function that architecture quality ratio is significantly increased
Energy.Meanwhile the present invention realizes that tuner-type electromagnetism is used to the damping change of matter damper by the external resistance value of regulating winding.
Summary of the invention
The purpose of the present invention is not changing tuned mass damper volume and in the case where basic principle, by used matter concept
It is introduced into conventional tune mass damper field, and a kind of used matter damper of tuner-type electromagnetism is provided, on the one hand greatly improves tune
On the other hand the mass ratio of humorous mass damper realizes that tuner-type electromagnetism is used to the damping adjusting of matter damper.
Above-mentioned purpose of the invention is realized by the following technical solutions: the tuner-type electromagnetism is used to matter damper,
Including outer cylinder and its upper attachment and lower attachment, spring；It further includes the ball screw framework for being set to outer barrel,
Ball screw framework upper end axle stretch end is connect by gearbox with rotary flyweights, and gearbox is by being set to gearbox and ball wire
Position limit device between thick stick mechanism is fixed；Further include the inner cylinder for being set to outer barrel lower end, is provided with lower limit outside inner cylinder
Position device, inner cylinder can move up and down linearly in lower caging device；Inner cylinder upper end and ball screw framework are connected, and drive ball
Screw mechanism moves up and down linearly；It is configured in order coil and permanent magnet from outside to inside in inner cylinder inside lower portions, in permanent magnet
It is inside fixed with the magnetizer that can be moved up and down linearly, magnetizer reaches outside the lower end of interior barrel and an external barrel, and magnetizer lower end is solid
It is connected with lower attachment and its connecting plate, the spring is affixed with connecting plate and inner cylinder lower end and is sleeved on outside magnetizer, not
When work, spring, which is in, loosens equilibrium state.
Specifically, the ball screw framework includes ball nut, ball screw, ball, wherein ball nut and inner cylinder
Upper end is connected, and ball screw upper end axle stretch end is connect with gearbox.Ball screw framework selects linear type slider roll guide rail, tool
The standby performance for low frequency linear motion being changed into high speed rotary motion, ball screw framework use stainless steel sealed construction frame
Frame, the anti-foreign matter core circle of end load avoid impacting the movement of lead screw because foreign object is fallen into work, while using self-lubricating
Device avoids noise pollution, it may have long service life, save cost the features such as.
Specifically, the coil is circumscribed with resistance.By adjusting outer connecting resistance, variation of damping ratio is realized.
Specifically, the coil is circumscribed with energy collection unit, the energy collection unit includes RLC resonance circuit, steady
Current voltage device and battery.Coil, permanent magnet and magnetizer can be chosen according to the optimal damping ratio of specific damper,
After terminal increases energy collection unit, the function of vibration damping and mechanical energy conversion electric energy can be realized.
Damper of the invention is a kind of based on electromagnetic damping element " used matter " damper device, it utilizes controlled structure
It is converted into electric energy in the mechanical energy of extraneous effect of vibration, magnetic flux changes in coil, and then generates the i.e. anti-electricity of electromagnetic damping
Kinetic potential；And the effect that larger " rotating inertial mass " is obtained with smaller own wt is realized using gearbox and rotary flyweights device
Fruit.Meanwhile it forms the effect of tuning vibration damping by the property of spring deformation.Tuner-type electromagnetism of the present invention is used to matter damping
The performance that device is capable of effectively lift structure vibration damping control increases to the order of magnitude tuning compared with conventional tune mass damper
The tuning quality of quality device, greatly improved mass ratio；By adjusting outer connecting resistance, variation of damping ratio is realized.It is suitable for having
The civil engineering structure of relative displacement, such as suspension cable, the junction Loads of Long-span Bridges Ta Liang, at skyscraper relative storey displacement etc.；Also have
There is the features such as long service life, damping property is good.When controlled main structure is vibrated by external actions such as earthquake, wind loads,
Tuner-type electromagnetism of the present invention is used to matter damper both ends and relative linear motion occurs, and the straight line switching mechanism through ball-screw will be low
Frequency linear motion is changed into high speed rotary motion, after gearbox, drives rotary flyweights rotation to generate larger used matter, at this
In the process, permanent magnet moves together with magnetizer, and relative motion occurs between permanent magnet and coil at this time, to make magnetic in coil
Flux changes, and induced electromotive force is generated in coil and then generates induced current, according to Lenz's law, induced current be will form
Electromagnetic damping, that is, counter electromotive force inhibits the movement of magnetizer；It is used for tuner-type electromagnetism by gearbox and rotary flyweights device
Matter damper provides used matter coefficient.
In conclusion tuner-type electromagnetism of the invention is used to matter damper compared with existing damper, have following
Advantage:
(1) by introducing used matter concept, the tuning quality of tuning quality device is increased to the order of magnitude, damping greatly improved
Device mass ratio.
(2) realize that tuner-type electromagnetism is used to the damping change of matter damper by the external resistance value of regulating winding.
(3) rotating device is converted using the straight line of ball screw, the linear motion of low frequency is made to be converted to the rotation fortune of high frequency
Dynamic and gearbox and flywheel gear greatly improve the used matter coefficient of electromagnetic damper, promote damper vibration damping performance.
It (4), should when coil terminal uses RLC resonance circuit, electric current of voltage regulation device and battery as energy collection unit
Damper can be achieved at the same time the function of vibration damping and mechanical energy conversion electric energy.
(5) civil engineering structure for being suitable for having relative displacement, such as suspension cable, the junction Loads of Long-span Bridges Ta Liang, high level is built
Build at relative storey displacement etc..
Detailed description of the invention
Fig. 1 is the theory structure schematic diagram of the embodiment of the present invention.
In figure: 1 is upper attachment, and 2 be rotary flyweights, and 3 be the ball screw of ball screw framework, and 4 be ball-screw
The ball nut of mechanism, 5 be outer cylinder, and 6 be coil, and 7 be gearbox, and 8 be position limit device, and 9 be the ball of ball screw framework,
10 be inner cylinder, and 11 be permanent magnet, and 12 be spring, and 13 be magnetizer, and 14 be lower caging device, and 15 be lower attachment, and 16 be company
Fishplate bar.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Referring to Fig. 1, the tuner-type electromagnetism of the present embodiment is used to matter damper, including outer cylinder 5, spring 12,5 both ends of outer cylinder it is upper
Portion's connector 1 and lower attachment 15；It further includes the ball screw framework being set to inside outer cylinder 5, ball screw framework packet
Include ball nut 4, ball screw 3, ball 9.3 upper end of ball screw (i.e. left end in figure) axle stretch end of ball screw framework passes through
Gearbox 7 is connect with rotary flyweights 2, and gearbox 7 is connected by the guide rod 17 being set between gearbox 7 and ball screw framework
It connects, guide rod 17 is fixed in outer cylinder 5 using annular position limit device 8；It further include that be set to 5 interior lower end of outer cylinder (right i.e. in figure
End) inner cylinder 10, the outside of inner cylinder 10 is intermediate to be provided with lower caging device 14, and inner cylinder 10 can be made straight up and down in lower caging device 14
Line movement (the left and right linear motion i.e. in figure) is simultaneously limited in outer cylinder 5 by annular lower caging device 14；10 upper end of inner cylinder with
The ball nut 4 of ball screw framework is connected, and ball nut 4 is driven to move up and down linearly；In 10 inside lower portions of inner cylinder from outer
It is configured in order coil 6 and permanent magnet 11 to interior, the magnetizer 13 that can be moved up and down linearly is fixed in permanent magnet 11, is led
Magnet 13 reaches outside the lower end of inner cylinder 10 and outer cylinder 5, and 13 lower end of magnetizer is fixed with lower attachment 15 and its connecting plate 16,
Spring 12 is affixed with connecting plate 16 and 10 lower end of inner cylinder and is sleeved on outside magnetizer 13, and when not working, spring 12, which is in, to be loosened
Equilibrium state.
Tuner-type electromagnetism of the invention, which is used to matter damper, can be used in inhibiting cable-stayed bridge cable, high building structure, transmission of electricity
The structural vibrations such as transmission tower and ocean workbench.If tuner-type electromagnetism of the present invention, which is used to matter damper, is installed on cable-stayed bridge cable
In, the upper end of device can be fixed on drag-line by upper attachment 1, and lower end is fixed on from the ground by lower attachment 15
On closer support.When cable-stayed bridge cable is vibrated by external interference, cause the ball nut 4 of ball wire rod mechanism along rolling
The axis of ballscrew mechanism moves along a straight line, and then causes ball screw 3 to make rotating motion by ball 9, realizes low frequency
Linear motion is changed into high speed rotary motion, and final ball wire rod mechanism, gearbox 7 and rotary flyweights 2 carry out rotation fortune simultaneously
It is dynamic, to realize the effect for obtaining larger " rotating inertial mass " with smaller rotating mass.Again by permanent magnet 11 and coil 6 it
Between linear relative movement occurs, magnetic flux changes in coil 6, and induced electromotive force is generated in coil 6 and then generates induced electricity
Cable-stayed bridge cable vibration mechanical energy is converted electric energy by stream, while electric energy will form electromagnetic damping i.e. counter electromotive force to inhibit electricity
Motor-driven sub- movement achievees the effect that viscous damping unit in conventional tune mass damper, and spring is in work in this process
Make state, plays tunning effect；Whole system realizes electromagnetic energy-consumption, used matter and spring tuning in passive control process
Multiple action effect.When coil 6 is circumscribed with resistance, the damping change that tuner-type electromagnetism of the present invention is used to matter damper can be realized
Change.When coil 6 is circumscribed with energy collection unit, it is able to achieve the difunctional of damper vibration damping of the present invention and collection of energy；Wherein,
Energy collection unit includes RLC resonance circuit, electric current of voltage regulation device and battery, is a kind of conventional energy collection unit, herein
It repeats no more.
Tuner-type electromagnetism of the present invention is used to matter damper when working on suspension cable, and specific implementation process is: working as suspension cable
When being vibrated by external interference, causes tuner-type electromagnetism of the present invention to be used to matter damper and generate axially opposing displacement, by ball wire
Low-speed rectilinear movement is changed into high speed rotary motion by thick stick mechanism, and tuner-type electromagnetism is used to matter damper and generates electromagnetic damping power and be used to
Matter effect reacts in structure.The vibration mechanical energy of suspension cable is converted into the consumption of electromagnetic damping power, to realize used matter, electromagnetism
The vibration-damping functions such as energy consumption and spring tuning.
It is exemplary embodiments of the invention above, implementation of the invention is without being limited thereto.
Claims (4)
1. a kind of tuner-type electromagnetism is used to matter damper, including outer cylinder and its upper attachment and lower attachment, spring；Its feature
Be: it further includes the ball screw framework for being set to outer barrel, ball screw framework upper end axle stretch end by gearbox with
Rotary flyweights connection, gearbox are fixed by the position limit device being set between gearbox and ball screw framework；Further include
It is set to the inner cylinder of outer barrel lower end, lower caging device is provided with outside inner cylinder, inner cylinder can be made up and down in lower caging device
Linear motion；Inner cylinder upper end and ball screw framework are connected, and ball screw framework is driven to move up and down linearly；In inner cylinder lower part
The inside is configured in order coil and permanent magnet from outside to inside, and the magnetizer that can be moved up and down linearly is fixed in permanent magnet,
Magnetizer reaches outside the lower end of interior barrel and an external barrel, and magnetizer lower end is fixed with lower attachment and its connecting plate, the spring
Affixed with connecting plate and inner cylinder lower end and be sleeved on outside magnetizer, when not working, spring, which is in, loosens equilibrium state.
2. tuner-type electromagnetism according to claim 1 is used to matter damper, it is characterised in that: the ball screw framework includes
Ball nut, ball screw, ball, wherein ball nut and inner cylinder upper end are connected, ball screw upper end axle stretch end and gearbox
Connection.
3. tuner-type electromagnetism according to claim 1 is used to matter damper, it is characterised in that: the coil is circumscribed with resistance.
4. tuner-type electromagnetism according to claim 1 is used to matter damper, it is characterised in that: the coil is circumscribed with energy receipts
Collect unit, the energy collection unit includes RLC resonance circuit, electric current of voltage regulation device and battery.
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Cited By (7)
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|---|---|---|---|---|
| CN110984418A (en) * | 2020-01-13 | 2020-04-10 | 东南大学 | Adjustable ultra-low frequency vertical eddy current tuned mass damper |
| CN113062486A (en) * | 2021-03-26 | 2021-07-02 | 华中科技大学 | Tuned viscous inertial mass damper with electromagnetic damping |
| CN113090702A (en) * | 2021-03-12 | 2021-07-09 | 长安大学 | Composite damping vibration damper |
| CN113294475A (en) * | 2021-04-29 | 2021-08-24 | 江苏大学 | Cylinder cam type reciprocating inertial container device |
| CN114607062A (en) * | 2022-03-24 | 2022-06-10 | 华东交通大学 | Inertial capacity damping adjustable speed type electromagnetic eddy current inertial damper |
| CN115045959A (en) * | 2022-06-15 | 2022-09-13 | 同济大学 | Split type container of being used to of bent cylinder |
| CN115111299A (en) * | 2022-07-11 | 2022-09-27 | 湖南省潇振工程科技有限公司 | Axial tension and pressure asymmetric eddy current damper |
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| CN113090702A (en) * | 2021-03-12 | 2021-07-09 | 长安大学 | Composite damping vibration damper |
| CN113062486A (en) * | 2021-03-26 | 2021-07-02 | 华中科技大学 | Tuned viscous inertial mass damper with electromagnetic damping |
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| CN113294475A (en) * | 2021-04-29 | 2021-08-24 | 江苏大学 | Cylinder cam type reciprocating inertial container device |
| CN114607062A (en) * | 2022-03-24 | 2022-06-10 | 华东交通大学 | Inertial capacity damping adjustable speed type electromagnetic eddy current inertial damper |
| CN114607062B (en) * | 2022-03-24 | 2023-06-06 | 华东交通大学 | Speed type electromagnetic vortex inertia damper with adjustable inertia capacity damping |
| CN115045959A (en) * | 2022-06-15 | 2022-09-13 | 同济大学 | Split type container of being used to of bent cylinder |
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