CN206694483U - A kind of big displacement eddy current damper - Google Patents
A kind of big displacement eddy current damper Download PDFInfo
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- CN206694483U CN206694483U CN201720497054.2U CN201720497054U CN206694483U CN 206694483 U CN206694483 U CN 206694483U CN 201720497054 U CN201720497054 U CN 201720497054U CN 206694483 U CN206694483 U CN 206694483U
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- sleeve
- ball
- damper
- eddy current
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Abstract
The utility model belongs to engineering structure vibration control technology field, there is provided a kind of big displacement eddy current damper, including multi-stage sleeve, conductor piece, permanent magnet, round rubber pad, guide rod, connection ball pivot and ball-frame carriage.Big displacement eddy current damper, the displacement stroke for increasing damper of multi-stage sleeve structure at double, if the sleeve series of damper is n, the length of every grade of sleeve recess is L, then the displacement stroke of the utility model damper is about L~nL.Big displacement eddy current damper can significantly increase the power consumption control effect of damper.When structure is vibrated, multi-stage sleeve all participates in work while consumed energy；The power consumption unit of sleeve inners at different levels can increase setting as needed；The material of conductor piece uses copper sheet, and its electric conductivity is fine, and caused eddy-current damping is larger, moderate, cost-effective.The connection of big displacement eddy current damper and agent structure is very convenient, only need to fix the connection ball pivot at damper both ends with agent structure.
Description
Technical field
The utility model belongs to engineering structure vibration control technology field, and in particular to a kind of big displacement eddy-current damping
Device.
Background technology
How the engineering fields such as Aeronautics and Astronautics, machinery, building effectively mitigate in the prevalence of vibration problem and suppression are shaken
The harm that dynamic response is brought to engineering structure, it is always the research emphasis of engineers and technicians.Structural vibration control be by
Installation power consumption or energy absorption device in engineering structure, or nonload bearing element is designed to that dissipative cell is made to mitigate structure by external load
With caused dynamic response.Accordingly, with respect to traditional thinking that external load effect is directly resisted using structural system, structure is shaken
Dynamic control technology is the important breakthrough of engineering structure antivibration vibration damping and design method of preventing and reducing natural disasters.
Structural vibration control generally can be divided into passive control, active control, half master according to whether needing external energy to input
Dynamic control and mixing control；Working mechanism according to control device can be divided into power consumption, energy-absorbing and the cut-off class of vibrational energy three again.Quilt
Dynamic control does not need ambient systems to provide energy, and control process has independent of structural response and external interference information
Simple structure, reliability height, low cost, it is easy to maintain many advantages, such as, be the control technology being most widely used at present.
The dampers using developing materials such as viscoelastic material, viscous fluids various in recent years achieve certain vibration damping effect
Fruit, but application of the damper of such material making in engineering is still needed and overcomes such as antifatigue, anti-aging, durability, corrosion resistant
The common problem such as corrosion and the fluid damper phenomenon of leakage that may be present.Eddy current damper is (non-based on conductor
Permeability magnetic material) principle of motion generation eddy current effect carrys out work in magnetic field.After vortex flow produces, magnetic field will be to conductor
The motion that damping force prevents conductor is produced, caused vortex flow is dissipated in the medium of surrounding in the form of heat energy in conductor.In
It is that the kinetic energy that eddy current damper constantly transmits vibration source is converted into the vortex flow in conductor, and vortex flow is changed into heat
Energy, reach the purpose of passive energy dissipation.Therefore, eddy current damper have it is simple in construction, contactless, without abrasion, without work be situated between
The features such as matter, long lifespan and rigidity and controllable damping, there is fabulous application prospect.
The size of damper institute's dissipation energy in structural vibration control was both relevant with the material property of damper itself,
It is relevant with the size of damper installation site structure relative deformation.Most dampers work as engineering because itself displacement stroke is smaller
Structure produces to be needed to be applicable the size design of damper is larger when significantly vibrating, and therefore, is designed and developed suitable for big position
The damper of shifting has important practical meaning in engineering.
Utility model content
The utility model embodiment provides a kind of big displacement eddy current damper, utilizes multi-stage sleeve increasing at double
The displacement stroke of damper, the power consumption of damper is significantly enhanced with reference to the multigroup current vortex power consumption unit set in sleeves at different levels
Control effect.
The technical solution of the utility model：
A kind of big displacement eddy current damper, including multi-stage sleeve, conductor piece 2, permanent magnet 3, round rubber pad 4, lead
Bar 9, connection ball pivot 10 and ball-frame carriage 11；
Described multi-stage sleeve includes chopped-off head sleeve 1 and intergrade sleeve 8, and intergrade sleeve 8 sets multiple；Sets at different levels
Cylinder, cylinder are connected with end cap 6 by screw rod 5；Described chopped-off head sleeve 1 is located at most external, its largest outside diameter, its end be provided with
The connected mechanism of ball pivot 10 is connected, connection ball pivot 10 is fixed on the position of needs；The external diameter of described multiple intergrade sleeves 8
It is sequentially reduced, is set between adjacent two intergrades sleeve 8 by two groups of balls 7, scrolling realization is freely stretched；
Described ball 7 is divided into two groups by its position on big displacement eddy current damper, and one group of ball 7 is embedded at different levels
In the groove of sleeve end cap 6 and each outer wall of intergrade sleeve 8；Another group of ball 7 is embedded in the ball branch of each intergrade sleeve ends
In the groove of seat 11 and sleeve linings at different levels, the displacement that two groups of balls 7 and corresponding groove are completed to sleeves at different levels jointly is oriented to；
Described round rubber pad 4 is arranged on the centre of sleeve ends inwalls at different levels, and playing prevents sleeves at different levels
Between compress when occur rigid collision effect；
Each end outer wall of intergrade sleeve 8 is interval with multiple permanent magnets 3 and multiple ball-frame carriages 11, permanent magnet 3 and rolling
Pearl bearing 11 arranges along sleeve weekly interval, is set in the side of ball-frame carriage 11 and rigidity occurs when preventing stretching between sleeves at different levels touches
The block rubber 12 hit；
Sleeve ends at different levels are provided with the round rubber pad 4 that rigid collision occurs when preventing compression, in end
Center portion position；
Conductor piece 2 is fixed on sleeve linings at different levels, and it is positioned opposite with permanent magnet 3；
Described guide rod 9 is the final stage of damper, the mode of guide rod end set permanent magnet 3 and ball-frame carriage 11 with it is middle
Set permanent magnet 3 identical with the mode of ball-frame carriage 11 on level sleeve 8, or adjusted according to actual size；Guide rod 9 is provided with being connected
The connected mechanism of ball pivot 10, connection ball pivot 10 are fixed on the position of needs.
Described multi-stage sleeve and end cap 6 is made of permeability magnetic material.
Described conductor piece 2 uses copper sheet.
The described radius of round rubber pad 4 is equal to the exterior radius of adjacent next stage sleeve.
The beneficial effects of the utility model：
(1) big displacement eddy current damper of the present utility model, the position for increasing damper of multi-stage sleeve structure at double
Divide a word with a hyphen at the end of a line journey, if the sleeve series of damper is n, the length of every grade of sleeve recess is L, then the utility model damper displacement row
Cheng Yuewei L~nL.
(2) big displacement eddy current damper of the present utility model, the power consumption control effect of damper can be significantly increased.Knot
When structure vibrates, multi-stage sleeve all participates in work while consumed energy；Power consumption unit (permanent magnet and the conductor of sleeve inners at different levels
Piece) setting can be increased as needed；The material of conductor piece uses copper sheet, and its electric conductivity is fine, caused eddy-current damping
It is larger, it is moderate, it is cost-effective.
(3) big displacement eddy current damper of the present utility model, can very easily adjust damping parameter.By adjusting phase
The diameter of adjacent sleeve, thus it is possible to vary the distance between permanent magnet and conductor piece, and adjustment conductor piece thickness, permanent magnet magnetic field strength
Degree etc., the regulation of damping parameter can be achieved.
(4) big displacement eddy current damper of the present utility model, continuously magnetic field sources are provided using permanent magnet, without
Outside resources, avoid power supply inconvenience or cannot be guaranteed the obstacle that use of the reliable power supply to damper is brought.Simultaneously as forever
The physical property of magnet and conductor piece keeps remaining unchanged for a long period of time, and damper can provide effectiveness in vibration suppression steady in a long-term.
(5) big displacement eddy current damper of the present utility model, the setting of sleeves and end cap at different levels substantially avoided magnetic circuit
Leakage field, not only increase the efficiency of eddy-current damping, and avoid the influence to various components around.
(6) big displacement eddy current damper of the present utility model, it is very convenient with the connection of agent structure, it will need to only damp
The connection ball pivot at device both ends is fixed with agent structure.
(7) big displacement eddy current damper of the present utility model, have simple structure, without abrasion, without working media, longevity
The advantages that life is long, easy to maintain.
Brief description of the drawings
Fig. 1 is a kind of longitudinal sectional drawing for big displacement eddy current damper that the utility model embodiment provides.
Fig. 2 is a kind of A-A profiles for big displacement eddy current damper that the utility model embodiment provides.
Fig. 3 is a kind of B-B profiles for big displacement eddy current damper that the utility model embodiment provides.
Fig. 4 is a kind of C-C profiles for big displacement eddy current damper that the utility model embodiment provides.
Fig. 5 is a kind of D-D profiles for big displacement eddy current damper that the utility model embodiment provides.
In figure：1 chopped-off head sleeve；2 conductor pieces；3 permanent magnets；4 round rubber pads；5 screw rods；6 end caps；7 balls；Among 8
Level sleeve；9 guide rods；10 connection ball pivots；11 ball-frame carriages；12 block rubbers.
Embodiment
The utility model embodiment provides a kind of big displacement eddy current damper, utilizes multi-stage sleeve increasing at double
The displacement stroke of damper, the power consumption of damper is significantly enhanced with reference to the multigroup current vortex power consumption unit set in sleeves at different levels
Control effect.
, below will knot to enable purpose of utility model of the present utility model, feature, advantage more obvious and understandable
The accompanying drawing in the utility model embodiment is closed, the technical scheme in the embodiment of the utility model is clearly and completely described,
Obviously, the embodiments described below are only the utility model part of the embodiment, and not all embodiment.Based on this reality
With the embodiment in new, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of the utility model protection.
Refer to Fig. 1 to Fig. 5, an a kind of implementation of big displacement eddy current damper that the utility model embodiment provides
Example, including：Chopped-off head sleeve 1, conductor piece 2, permanent magnet 3, round rubber pad 4, intergrade sleeve 8, guide rod 9, connection ball pivot 10
And ball-frame carriage 11 etc.；
3 grades are provided with the present embodiment using sleeve made of permeability magnetic material, the external diameter of three-level sleeve can be according to actual need
It is sequentially reduced；
End cap 6 is fixed on the barrel of sleeves at different levels using screw rod 5 in the open end of sleeves at different levels, end cap 6 also uses
Permeability magnetic material is made, in the present embodiment the connection of end caps and barrel at different levels be provided with 8 screw rods；
Ensure freely to stretch by the rolling of two groups of balls 7 between adjacent sleeve；
Ball 7 is divided into two groups by its position on damper, and one group of ball is embedded in sleeve end caps 6 at different levels and each intergrade
In the groove of the outer wall of sleeve 8, another group of ball is in groove of each ball-frame carriage 11 with sleeve linings at different levels.The scope of groove
Determine that the sphere chamfering of the same radius of ball 7 is processed at groove both ends according to the design runlength of ball 7.So, two groups of balls and phase
The displacement that the groove answered completes to sleeves at different levels jointly is oriented to；
Ball-frame carriage 11 is fixed on the outer wall of the end of intergrade sleeve 8, and being set on the side of ball-frame carriage 11 prevents sets at different levels
The block rubber 12 of rigid collision occurs when being stretched between cylinder；
Permanent magnet 3 is also arranged on the outer wall of each end of intergrade sleeve 8, is arranged with ball-frame carriage 11 along cylinder weekly interval；
Conductor piece 2 is fixed on the sleeve linings at different levels position relative with permanent magnet 3, and the coverage of conductor piece 2 is slightly larger than
The design runlength of permanent magnet 3, so as to abundant cutting magnetic induction line.Conductor piece 2 uses copper sheet, and its electric conductivity is fine, caused electricity
Vortex is obvious, moderate, cost-effective；
Each conductor piece 2 and permanent magnet on the other side 3 form a power consumption unit in the present embodiment, the present embodiment it is each
Intergrade sleeve ends are provided with 4 power consumption units altogether；
Round rubber pad 4 is arranged on the centre of sleeve ends inwalls at different levels, and playing prevents from pressing between sleeves at different levels
The effect of rigid collision occurs during contracting, pad radius is equal to the exterior radius of adjacent next stage sleeve, and spacer thickness is according to reality
It needs to be determined that；
Guide rod 9 be damper final stage, the setting of guide rod end permanent magnet 3 and ball-frame carriage 11 with intergrade sleeve 8, or
Adjusted according to actual size；
Connection ball pivot 10 is arranged on the both ends of damper, very easily can be connected with the structure position that need to set damper.
In use, if the sleeve series of damper is n, the length of every grade of sleeve recess is L, then the utility model
The displacement stroke of damper is about L~nL, and can consume energy unit according to the displacement vibration intensity of engineering structure and sleeve inner at different levels
The laying quantity of (permanent magnet 3 and conductor piece 2) selects rational n values；Damper of the present utility model can be adjacent by adjusting
The diameter of sleeve, change the distance between permanent magnet 3 and conductor piece 2, and adjustment conductor piece 2 thickness, the magnetic field intensity of permanent magnet 3
Deng the regulation of achievable damping parameter；Damper of the present utility model provides continuously magnetic field sources using permanent magnet 3,
Without outside resources, the scope of application is wider, simultaneously as the physical property of permanent magnet 3 and conductor piece 2 keeps remaining unchanged for a long period of time, hinders
Buddhist nun's device can provide energy consumption effect steady in a long-term；Setting of the sleeves at different levels including 1 and 8 and end cap 6 substantially avoided magnetic circuit
Leakage field, not only increases the efficiency of eddy-current damping, and avoids the influence to various components around；This damper and master
The connection of body structure is very convenient, need to only fix the connection ball pivot 10 at damper both ends and agent structure；This practicality is new
The big displacement eddy current damper of type, also with simple structure, without abrasion, it is excellent without working media, long lifespan, easy to maintain etc.
Point, is with a wide range of applications.
It should be noted when designing the utility model：First, the sleeve quantity n of this damper should be according to the oscillation intensity of structure
With the laying reasonable quantity value of sleeve inners at different levels power consumption unit；Second, coverage of the conductor piece 2 on sleeves at different levels should
Slightly larger than the stroke range of permanent magnet 3；3rd, the length of ball groove is the design runlength of ball 7, and groove both ends are processed into
With the sphere chamfering of the radius of ball 7, appropriate coating lubricating oil facilitates ball 7 to roll in groove；4th, in each intergrade sleeve
The position of wall upper groove and the position of outer wall upper groove are mutually staggered, and avoid weakening the partial cross section of sleeve；5th, this damper
Installation position in engineering structure should be according to corresponding vibration damping scheme and control targe reasonable Arrangement.
Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to foregoing reality
Example is applied the utility model is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and model of various embodiments of the utility model technical scheme
Enclose.
Claims (5)
- A kind of 1. big displacement eddy current damper, it is characterised in that described big displacement eddy current damper include multi-stage sleeve, Conductor piece (2), permanent magnet (3), round rubber pad (4), guide rod (9), connection ball pivot (10) and ball-frame carriage (11)；Described multi-stage sleeve includes chopped-off head sleeve (1) and intergrade sleeve (8), and intergrade sleeve (8) sets multiple；Sets at different levels Cylinder, cylinder are connected with end cap (6) by screw rod (5)；Described chopped-off head sleeve (1) is located at most external, its largest outside diameter, its end Provided with the mechanism connected with being connected ball pivot (10), connection ball pivot (10) is fixed on the position of needs；Described multiple intergrades The external diameter of sleeve (8) is sequentially reduced, and is set between adjacent two intergrades sleeve (8) by two groups of balls (7), and scrolling realization is freely stretched Contracting；Described ball (7) is divided into two groups by its position on big displacement eddy current damper, and one group of ball (7) is embedded at different levels In the groove of sleeve end cap (6) and each intergrade sleeve (8) outer wall；Another group of ball (7) is embedded in each intergrade sleeve ends In the groove of ball-frame carriage (11) and sleeve linings at different levels, two groups of balls (7) and corresponding groove are completed to sleeves at different levels jointly Displacement be oriented to；Described round rubber pad (4) is arranged on the centre of sleeve ends inwalls at different levels, play prevent sleeves at different levels it Between compress when occur rigid collision effect；Each intergrade sleeve (8) end outer wall is interval with multiple permanent magnets (3) and multiple ball-frame carriages (11), permanent magnet (3) Arrange along sleeve weekly interval with ball-frame carriage (11), sent out when ball-frame carriage (11) side sets and prevents stretching between sleeves at different levels The block rubber (12) of raw rigid collision；Sleeve ends inwalls at different levels are provided with the round rubber pad (4) that rigid collision occurs when preventing compression, in end The centre of wall；Conductor piece (2) is fixed on sleeve linings at different levels, and it is positioned opposite with permanent magnet (3)；Described guide rod (9) is the mode of the final stage of damper, guide rod (9) end set permanent magnet (3) and ball-frame carriage (11) It is identical with setting the mode of permanent magnet (3) and ball-frame carriage (11) on intergrade sleeve (8), or adjusted according to actual size；Lead Bar (9) is provided with the mechanism connected with being connected ball pivot (10), and connection ball pivot (10) is fixed on the position of needs.
- 2. big displacement eddy current damper according to claim 1, it is characterised in that described multi-stage sleeve and end cap (6) it is made of permeability magnetic material.
- 3. big displacement eddy current damper according to claim 1 or 2, it is characterised in that described conductor piece (2) uses Copper sheet.
- 4. big displacement eddy current damper according to claim 1 or 2, it is characterised in that described round rubber pad (4) radius is equal to the exterior radius of adjacent next stage sleeve.
- 5. big displacement eddy current damper according to claim 3, it is characterised in that described round rubber pad (4) Radius is equal to the exterior radius of adjacent next stage sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720497054.2U CN206694483U (en) | 2017-05-09 | 2017-05-09 | A kind of big displacement eddy current damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720497054.2U CN206694483U (en) | 2017-05-09 | 2017-05-09 | A kind of big displacement eddy current damper |
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| Publication Number | Publication Date |
|---|---|
| CN206694483U true CN206694483U (en) | 2017-12-01 |
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| CN201720497054.2U Expired - Fee Related CN206694483U (en) | 2017-05-09 | 2017-05-09 | A kind of big displacement eddy current damper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989129A (en) * | 2017-05-09 | 2017-07-28 | 大连理工大学 | A kind of big displacement eddy current damper |
| CN108252200A (en) * | 2018-01-31 | 2018-07-06 | 华中科技大学 | A kind of suspension cable permanent-magnet type eddy current damper of variable power |
| CN111827514A (en) * | 2020-07-27 | 2020-10-27 | 湖南大学 | Eddy current damping wall and building |
| CN111893834A (en) * | 2020-07-22 | 2020-11-06 | 重庆交通大学 | Magnetic conduction interval gradual change type electromagnetic damping danger avoiding lane |
-
2017
- 2017-05-09 CN CN201720497054.2U patent/CN206694483U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989129A (en) * | 2017-05-09 | 2017-07-28 | 大连理工大学 | A kind of big displacement eddy current damper |
| CN108252200A (en) * | 2018-01-31 | 2018-07-06 | 华中科技大学 | A kind of suspension cable permanent-magnet type eddy current damper of variable power |
| CN111893834A (en) * | 2020-07-22 | 2020-11-06 | 重庆交通大学 | Magnetic conduction interval gradual change type electromagnetic damping danger avoiding lane |
| CN111827514A (en) * | 2020-07-27 | 2020-10-27 | 湖南大学 | Eddy current damping wall and building |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 |