CN107100958B - A kind of asymmetric rotor eddy current damper - Google Patents
A kind of asymmetric rotor eddy current damper Download PDFInfo
- Publication number
- CN107100958B CN107100958B CN201710291338.0A CN201710291338A CN107100958B CN 107100958 B CN107100958 B CN 107100958B CN 201710291338 A CN201710291338 A CN 201710291338A CN 107100958 B CN107100958 B CN 107100958B
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- Prior art keywords
- line
- drag
- rotor
- copper sheet
- magnet
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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
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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
- F16F15/04—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 elastic means
-
- 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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
Abstract
The invention discloses a kind of asymmetric rotor eddy current dampers, including rotor, copper sheet, bearing and torsionspring；Rotor includes shell and magnet, and copper sheet is fixedly mounted on drag-line, and shell is mounted on bearings, and bearing is mounted on drag-line, and when rotor is rotated relative to drag-line, the magnetic induction line of copper sheet septum magnet generates current vortex on copper sheet come the energy for the vibration that dissipates；Rotor always has the movement tendency opposite with drag-line, can be with the amplitude of operative constraint drag-line.The effect of torsionspring be then on the drag-line for having principal vibration direction, using magnet symmetry axis perpendicular to direction of vibration as the equilbrium position of rotor.The vibration of drag-line can be effectively controlled in the present invention, and working method energy conservation and environmental protection not only reduces the cost of control vibration, but also can effectively improve the safety of structure.
Description
Technical field
The present invention provides a kind of symmetric rotor eddy current damper, for inhibiting response of the drag-line under effect of vibration, belongs to
In field of vibration control.
Background technique
The vibration control of field of civil engineering, generally by whether there is or not outside energy inputs can be divided into active control and passive control
Two major classes, and the semi- active control being combined by both control modes and mixing control.Common passive control mode
Have: basic vibration isolation, dissipative member damping system, energy consumer vibration damping and bump leveller vibration damping.The main controlling party of Structure Active Control
Formula has: active mass damper, active tendon control, pulse control, air force wind deflector etc..
Passive control is the structure control mode studied and used earliest, has and is not necessarily to extra power, technically simple, cost
Cheap advantage, thus be widely applied in engineering, it is this kind of such as damper with viscosity, especially oil liquid formula damper
Damper primary structure includes the components such as cylinder body, viscous liquid, piston, piston rod, damping material chamber, sealing end cap, sealing ring.
Such damper is higher to the sealing requirements of instrument, there are problems that liquid leakage, impacts to the reliability of damper.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides that a kind of structure is simple, green ring
It protects, consume energy significant asymmetric rotor eddy current damper.
Technical solution: in order to solve the above technical problems, the present invention provides a kind of asymmetric rotor eddy current damper, including
Rotor, copper sheet, bearing and torsionspring；The rotor includes shell and magnet, and the copper sheet is fixedly mounted on drag-line, described
Shell is mounted on bearings, and the bearing is mounted on drag-line, when rotor is rotated relative to drag-line, the magnetic strength of copper sheet septum magnet
Line generates current vortex on copper sheet come the energy for the vibration that dissipates；The both ends of the torsionspring are connect with drag-line and rotor respectively.
Specifically, the copper sheet is fixed on positioning pipe, and the positioning pipe is fixedly connected with drag-line, the fixed peace of the bearing
Mounted in the both ends of positioning pipe.
Specifically, the both ends of the rotor are mounted on torsionspring, and upper and lower torsionspring cooperates, and guarantee rotor energy
It is enough to return to equilbrium position after vibration occurs.The effect of torsionspring is on the drag-line for having principal vibration direction, magnet pair
Claim equilbrium position of the axis perpendicular to direction of vibration as rotor.
Specifically, there is locating slot, baffle, rear baffle and the anti-rotation limit for magnet to be fixedly mounted in the shell
The junction of item, the shell and bearing is equipped with shell lantern ring.Magnet is fixed mainly by locating slot, then relies on baffle into one
Step is fixed, since rotor can only do centrifugal movement, so magnet arrangement is relatively more firm.
Specifically, location hole is opened up on the bearing, the positioning hole is coated with screw, will be in bearing using screw
Circle is fixed on drag-line.
Specifically, it is also fixedly connected with positioning ring on drag-line, is equipped on positioning ring for limiting torsionspring one end
Limit turns round nail, has the banking pin of the limit torsionspring other end on shell, and the two cooperates.
Specifically, it has been sequentially arranged n copper sheet on the positioning pipe, n+1 block magnet is successively fixed in shell, n is positive
Integer, there are gap between copper sheet and magnet, the magnetic poles of adjacent magnets on the contrary, make it is adjacent have the tendency that attracting each other, in this way
Be conducive to the concentration in magnetic field, guarantee the abundant cutting magnetic induction line of copper sheet, reach the result that consumes energy to greatest extent.
When inhaul cable vibration, rotor can do the rotation of centrifugal movement trend, and one side copper sheet is done relative to magnet at this time
Cutting magnetic induction line movement, generates current vortex, the energy dissipation of vibration.On the other hand, rotor always has the movement opposite with drag-line
Trend, can be with the amplitude of operative constraint drag-line.
The utility model has the advantages that this electromagnetic damper is not in the leakage problem of hydraulic damper, service life is more permanent, dimension
Spring is only needed to change when repairing, it is easy to operate.And it does not need to carry out external power supply, energy conservation and environmental protection meets Green Development
Theory, not only reduces the cost of control vibration, but also can effectively improve the safety of structure.Structure is simple, and all parts are
Assemble, is conducive to large-scale production；Structural amplitude can be reduced, increase the period, so that structure is safer, it can be as needed
Damping is adjusted, this damper magnet quantity is not one layer constant, can be arranged as needed, with the linear change of quantity.
Particularly, for no principal vibration direction, also settable two damper arranged orthogonals cooperate, and prospect of the application is non-
Chang Hao.
Except it is above-described present invention solves the technical problem that, constitute technical solution technical characteristic and by these technologies
Outside advantage brought by the technical characteristic of scheme.It to make the object, technical solutions and advantages of the present invention clearer, below will knot
The attached drawing in the embodiment of the present invention is closed, to other skills for including in the other technologies problem of the invention that can solve, technical solution
The advantages of art feature and these technical characteristics are brought does apparent, complete description, it is clear that described embodiment is this
Invention a part of the embodiment, instead of all the embodiments.Embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings
Component can arrange and design with a variety of different configurations.Therefore, the implementation of the invention to providing in the accompanying drawings below
The detailed description of example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are on its basis without creative work institute obtained
There are other embodiments, shall fall within the protection scope of the present invention.
Detailed description of the invention
Fig. 1 is bearing scheme of installation；
Fig. 2 is bearing installation and positioning pipe schematic diagram；
Fig. 3 is shell rear surface schematic diagram；
Fig. 4 is outer casing frontispiece schematic diagram；
Fig. 5 is magnet scheme of installation；
Fig. 6 is shell and bearing connection schematic diagram；
Fig. 7 is torsionspring schematic diagram；
Fig. 8 is shell, torsionspring and positioning ring relative position schematic diagram；
Mono- complete external structure schematic diagram of damper of Fig. 9；
Figure 10 is copper sheet and positioning pipe schematic diagram；
Figure 11 is that damper is mounted on schematic diagram on drag-line；
Figure 12 is that damper is mounted on the cut away view on drag-line
In figure: drag-line 0, shell 10, lantern ring 11, screw 12, baffle 13, anti-rotation positive stop strip 14, banking pin 15, rear baffle
16, locating slot 17, magnet 18, bearing 20, stop collar 21, location hole 22, copper sheet 30, positioning pipe 31, torsionspring 40, spring are fixed
Position ring 41, limit turn round nail 42.
Specific embodiment
The present embodiment is used to inhibit the control system of structural vibration as shown in Fig. 1-Figure 12.By rotor, copper sheet 30, torsion
Spring 40, bearing 20 and each connecting component composition.Rotor includes shell 10, magnet 18, shell lantern ring 11, baffle 13；Copper sheet 30
It is fixed on positioning pipe 31；Location hole 22 used for positioning is opened up on bearing 20, is fixed on drag-line 0 using screw 12；
Shell includes locating slot 17, rear baffle 16 and anti-rotation positive stop strip 14；For fixed spring position, also it is fixedly connected on drag-line 0
Spring positioning ring 41；And the limit being arranged on positioning ring 41 for limiting torsionspring 40 turns round nail 42, the banking pin 15 with shell
It cooperates；Magnet 18 is fixed mainly by locating slot 17, is then further fixed by baffle, since rotor can only be centrifuged
Movement, so magnet arrangement is relatively more firm；When drag-line 0 vibrates generation, rotor can do the rotation of centrifugal movement trend, at this time
One side copper sheet 30 does cutting magnetic induction line movement relative to magnet 18, current vortex is generated, the energy dissipation of vibration, another party
Face, rotor always have the movement tendency opposite with drag-line, can be with the amplitude of operative constraint drag-line.The effect of torsionspring is then to have
On the drag-line in principal vibration direction, using magnet symmetry axis perpendicular to direction of vibration as the equilbrium position of rotor, reverse bullet up and down
Spring cooperates, and guarantees that rotor returns to equilbrium position when outer vibration terminates.
In use, including installation and work energy consumption:
Stop collar 21, torsionspring 40, bearing 20, positioning pipe 31 are covered in sequence in sequence first on drag-line
On drag-line, such as Fig. 2, Fig. 7 and Fig. 8, about 31 positioning pipe has bearing 20, torsionspring 40 and stop collar 21, determines position
Bearing 20 is screwed down later, is connected so that bearing 20 is consolidated with drag-line 0, and accomplish that metal (upper 20 being capable of common centering
Between positioning pipe 31 formed operative constraint；
For shell 10, the magnet of almost fan 18 is filled in locating slot 17 by 13 side of baffle first, then
Baffle 13 is screwed down, so that baffle 13 and magnet 18 are closely coupled, due to sShape features, magnet is stuck in locating slot 17 not
It can fall off, such as Fig. 3 ~ 5.After installing, this is integrally connected to above bearing and is tightened screw, such as Fig. 6 using lantern ring 11；
Finally according to the vibration characteristic of drag-line, the equilbrium position of magnet 18 is fixed on the Vertical Square with principal vibration direction
To, it is then as needed to adjust torsionspring 40 to the restraining force of shell and tighten spring retainer ring 41, it installs, such as schemes
11, in order to facilitate observation structure component relative position, provide Figure 12, the i.e. cut away view of structure.
When drag-line 0 is vibrated due to external force, since the combination and drag-line 0 of magnet 18 and shell 10 are to pass through bearing
Both 20 are connected, therefore will not be translatable jointly with drag-line 0, i.e., have relative motion trend, shell 10 can be related at this time
18 iron of magnetic is rotated around drag-line 0, and on the one hand due to the effect of centrifugal force, shell 10 inherently can play resistance to the movement of drag-line 0
Hinder effect, can reduce the amplitude of drag-line；On the other hand, due to the eddy current effect of copper sheet 30 and magnet, so that magnet passes through
The vibration that copper sheet 30 further constrains drag-line due to the viscosity effect of current vortex structure, can make inhaul cable vibration at the same time
Period is extended, in addition, the energy vibrated outside can also be dissipated in a manner of thermal energy current vortex.
During 10 whirling vibration of shell, always by least one by the constraint of torsion spring 40, such as Figure 11, when outer
When shell rotates clockwise, the banking pin 15 on shell can apply external force to by torsion spring, and turned round and followed closely due to the spring retainer ring upper limit
42 presence cannot be rotated by torsion spring 40, and can only twist deformation, last that shell is pushed back reversely again, at this time position
Banking pin 15 and limit in lower section turn round nail 42 and start to work, and principle is same as above, and so on.
Particularly, for the drag-line in no principal vibration direction, it can be considered in damper installation while installing two,
The magnet symmetry axis of two installations is mutually perpendicular to, and the effective oscillation damping and energy dissipating of the two collaborative work, single working principle are same as above in this way.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied, in the range of the principle of the present invention and technical idea, to this
A little embodiments carry out a variety of variations, modifications, equivalent substitutions and improvements etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of asymmetric rotor eddy current damper, it is characterised in that: including rotor, copper sheet, bearing and torsionspring；It is described
Rotor includes shell and magnet, and the copper sheet is fixedly mounted on drag-line, and the shell is mounted on bearings, the bearing installation
On drag-line, when rotor is rotated relative to drag-line, the magnetic induction line of copper sheet septum magnet generates current vortex on copper sheet come the vibration that dissipates
Dynamic energy；The both ends of the torsionspring are connect with drag-line and rotor respectively.
2. a kind of asymmetric rotor eddy current damper according to claim 1, it is characterised in that: the copper sheet is fixed on
On positioning pipe, the positioning pipe is fixedly connected with drag-line, and the bearing is fixedly mounted on the both ends of positioning pipe.
3. a kind of asymmetric rotor eddy current damper according to claim 2, it is characterised in that: on the positioning pipe according to
It is secondary to be disposed with n copper sheet, n+1 block magnet is successively fixed in shell, n is positive integer, and there are gap, phases between copper sheet and magnet
The magnetic pole of adjacent magnet is opposite.
4. a kind of asymmetric rotor eddy current damper according to claim 1, it is characterised in that: the both ends of the rotor
It is mounted on torsionspring, torsionspring is used for magnet symmetry axis perpendicular to direction of vibration as the equilbrium position of rotor.
5. a kind of asymmetric rotor eddy current damper according to claim 1, it is characterised in that: opened up on the bearing
Location hole, the positioning hole are coated with screw, and the inner ring of bearing is fixed on drag-line using screw.
6. a kind of asymmetric rotor eddy current damper according to claim 1, it is characterised in that: also fixed on drag-line
Positioning ring is connected, the limit for limiting torsionspring one end is equipped on positioning ring and turns round nail, there is limit torsionspring on shell
The banking pin of the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291338.0A CN107100958B (en) | 2017-04-28 | 2017-04-28 | A kind of asymmetric rotor eddy current damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291338.0A CN107100958B (en) | 2017-04-28 | 2017-04-28 | A kind of asymmetric rotor eddy current damper |
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| Publication Number | Publication Date |
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| CN107100958A CN107100958A (en) | 2017-08-29 |
| CN107100958B true CN107100958B (en) | 2019-04-30 |
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| CN201710291338.0A Active CN107100958B (en) | 2017-04-28 | 2017-04-28 | A kind of asymmetric rotor eddy current damper |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980263B (en) * | 2018-07-24 | 2019-04-19 | 四川大学 | It is vortexed dynamic absorber formula vibration isolator and vibration isolating method |
| CN109139765B (en) * | 2018-10-25 | 2023-06-23 | 华北水利水电大学 | Ternary vibration damper with parallel damping and spring units, design and assembly method |
| CN110578297A (en) * | 2019-08-27 | 2019-12-17 | 河海大学 | eddy current damper suitable for any vibration direction of inhaul cable |
| CN110686034A (en) * | 2019-10-11 | 2020-01-14 | 北京邮电大学 | Rotary electromagnetic damper with bidirectional torsion spring |
| CN113063051A (en) * | 2021-03-16 | 2021-07-02 | 洛阳双瑞特种装备有限公司 | Vibration reduction and isolation method for pipeline and accessories |
| CN113048183B (en) * | 2021-05-10 | 2022-03-08 | 西南交通大学 | Variable-frequency vibration self-learning quick tuning vibration absorption system |
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|---|---|---|---|---|
| CN1934370A (en) * | 2004-03-25 | 2007-03-21 | 洛德公司 | System comprising magnetically actuated rotary motion control device |
| CN101788031A (en) * | 2010-02-24 | 2010-07-28 | 谭和平 | Multiple-piece two-dimensional magneto-rheological damper |
| CN104578683A (en) * | 2013-10-09 | 2015-04-29 | 泰乐玛汽车制动系统（上海）有限公司 | Eddy current retarder |
| CN105178184A (en) * | 2015-06-04 | 2015-12-23 | 威胜利工程有限公司 | Friction damper |
| CN105952833A (en) * | 2016-04-28 | 2016-09-21 | 北京化工大学 | Seal damping vibration attenuation device with self-adaptive eccentricity adjustment function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3045042B2 (en) * | 1995-06-02 | 2000-05-22 | 鹿島建設株式会社 | Damping method and device for cable stayed cable |
| JP2002121704A (en) * | 2000-10-18 | 2002-04-26 | Kajima Corp | Vibration control device for diagonal bracing cable |
-
2017
- 2017-04-28 CN CN201710291338.0A patent/CN107100958B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1934370A (en) * | 2004-03-25 | 2007-03-21 | 洛德公司 | System comprising magnetically actuated rotary motion control device |
| CN101788031A (en) * | 2010-02-24 | 2010-07-28 | 谭和平 | Multiple-piece two-dimensional magneto-rheological damper |
| CN104578683A (en) * | 2013-10-09 | 2015-04-29 | 泰乐玛汽车制动系统（上海）有限公司 | Eddy current retarder |
| CN105178184A (en) * | 2015-06-04 | 2015-12-23 | 威胜利工程有限公司 | Friction damper |
| CN105952833A (en) * | 2016-04-28 | 2016-09-21 | 北京化工大学 | Seal damping vibration attenuation device with self-adaptive eccentricity adjustment function |
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| CN107100958A (en) | 2017-08-29 |
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