CN109751352A - A kind of axial displacement scale-up version eddy current damper - Google Patents
A kind of axial displacement scale-up version eddy current damper Download PDFInfo
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- CN109751352A CN109751352A CN201910158651.6A CN201910158651A CN109751352A CN 109751352 A CN109751352 A CN 109751352A CN 201910158651 A CN201910158651 A CN 201910158651A CN 109751352 A CN109751352 A CN 109751352A
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- slide bar
- axial displacement
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 27
- 238000013341 scale-up Methods 0.000 title claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 claims abstract description 31
- 239000010949 copper Substances 0.000 claims abstract description 31
- 238000013016 damping Methods 0.000 claims abstract description 11
- 239000000696 magnetic material Substances 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 13
- 241001014327 Anodontia Species 0.000 claims description 10
- 206010002583 anodontia Diseases 0.000 claims description 10
- 230000005212 anodontia Effects 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 abstract description 7
- 230000001629 suppression Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000009510 drug design Methods 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention belongs to energy-dissipating and shock-absorbing technical fields, are related to a kind of axial displacement scale-up version eddy current damper.The present invention, which converts the axial movement of slide bar to the rotation of copper sheet and generate current vortex, to consume energy, and takes the mode of adjustment gear size to rotate copper sheet and amplifies, and shorter slide bar displacement can cause more copper sheet to rotate, and energy efficiency is high；By adjusting the magnetic field strength of permanent magnet, the distance of the thickness of copper sheet, copper sheet to permanent magnet, the adjusting of damping parameter may be implemented；Continuously magnetic field sources are provided using permanent magnet, outside resources is not necessarily to, effectiveness in vibration suppression steady in a long-term can be generated；Using permeability magnetic material, it is possible to prevente effectively from the leakage field of magnetic circuit, not only increases the efficiency of eddy-current damping, and the influence to various components around is avoided；The present invention has rational design, simple structure, and easy for installation, does not influence external styling, is with a wide range of applications.
Description
Technical field
The invention belongs to structural vibration control technology field, in particular to a kind of axial displacement scale-up version eddy-current dampings
Device.
Background technique
Axial displacement damper be it is a kind of by absorb earthquake, wind shake, mechanical oscillation and other forms vibration energy with
The device for reducing building destruction, is widely used in the buildings such as civil buildings, industrial building, bridge.When building by
To external vibration unexpected impact when, axial displacement damper can consume external force to the impact energy of building, reduce building
Oscillation Amplitude, substantially reduce impact and destruction of the external vibration to building.However, existing axial displacement damper exists
Many deficiencies, for example, energy efficiency is low when vibration is smaller, the ability of consumption vibratory impulse energy is poor, and these insufficient poles
The earth affects the safety of building and the security of the lives and property of people.For the deficiency of existing product, the present invention will be axial
Damper displacement is combined with eddy current damper, proposes a kind of axial displacement scale-up version eddy current damper.
Summary of the invention
The purpose of the present invention is design it is a kind of construction rationally, the apparent damper of effectiveness in vibration suppression.
Technical solution of the present invention:
A kind of axial displacement scale-up version eddy current damper, mainly by oval hollow body 1, cover board 2, bolt 3, slide bar 4, tooth
Take turns a5, gear b6, gear c7, copper sheet 8, permanent magnet 9, ball a10, ball b11, ball c12, partition 13, hinge 14 and U-shaped bar 15
Composition；
The oval hollow body 1 and cover board 2 is connected by bolt 3, and the two constitutes the shell of entire damping unit；
The slide bar 4 is the bar structure of inner hollow, and outer surface passes through shell by the ball a10 of interior of shell
And it slides axially；4 inner surface of slide bar is divided into upper inner surface and lower inner surface, and upper inner surface is processed into tooth, stings with gear a5
It closes；Lower inner surface is machined with "convex" shaped region, and ball b11 is located at the prominent position in "convex" shaped region, and ball b11 is located at tooth
It takes turns near a5；
The two sides middle part with teeth of the gear a5 is anodontia, and the tooth of two sides is engaged with the tooth on slide bar 4, the portion that middle part is anodontia
Divide and is fitted closely with ball b11；
The gear b6 is consolidated with gear a5 to be rotated simultaneously, and the rotation axis of the two passes through partition 13；
The gear c7 is engaged with gear b6, is rotated by the ball c12 on partition 13, gear c7 two pieces every
Part between plate 13 is with teeth, and remainder is anodontia cylinder；
The copper sheet 8 is fixed on the end gear c7, rotates with the rotation of gear c7；
The permanent magnet 9 is located at 8 two sides of copper sheet；
The hinge 14 is located at the end of whole device, can be freely rotated.
The radius of the gear b6 is greater than the radius of gear c7.
The whole device is made of permeability magnetic material, and ball a10, ball b11 and ball c12 are spherical steel ball.
The stroke of the slide bar is controlled by U-shaped bar and crust of the device.
The working principle of the invention:
When vibrating generation, the deformation of building can cause elongating or shortening for damper, and the sliding of slide bar can be led at this time
The rotation of gear is caused, and then copper sheet is caused to rotate between permanent magnet.By Lenz's law it is found that copper sheet, which will receive one, inhibits it
The power of movement.This is because the relative motion in copper sheet and magnetic field to produce motional electromotive force in copper sheet, charge movement is formed
Current vortex.These current vortexs under the influence of a magnetic field by Lorentz force, and direction always with the direction of motion of copper sheet on the contrary,
So as to form resistance, i.e. eddy-current damping power.At the same time, due to the fuel factor of electric current, a part vibration energy will be converted
For thermal energy, vibrated to play the role of reducing.Particularly, it is assumed that the distance that slide bar slips over is d, and the radius of gear a is Ra, tooth
The radius for taking turns b is Rb, the radius of gear c is Rc, Rb> Rc, then the rotational angle of copper sheet can be amplified, the angle of rotation
For (d/Ra)×(Rb/Rc), amplification factor Rb/Rc, i.e. gear b and the radius ratio of gear c are bigger, and energy efficiency is higher.
Beneficial effects of the present invention:
(1) a kind of axial displacement scale-up version eddy current damper of the invention, converts copper sheet for the axial movement of slide bar
Rotation and generate current vortex and consume energy, take the mode of adjustment gear size to rotate copper sheet and amplify, shorter slide bar position
Shifting can cause the copper sheet of larger angle to rotate, and energy efficiency greatly improves；
(2) a kind of axial displacement scale-up version eddy current damper of the invention, magnetic field strength, copper by adjusting permanent magnet
The distance of the thickness of piece, copper sheet to permanent magnet, may be implemented the adjusting of damping parameter；
(3) a kind of axial displacement scale-up version eddy current damper of the invention provides continuously magnetic using permanent magnet
Field source is not necessarily to outside resources, can generate effectiveness in vibration suppression steady in a long-term；
(4) a kind of axial displacement scale-up version eddy current damper of the invention uses permeability magnetic material, it is possible to prevente effectively from
The leakage field of magnetic circuit, not only increases the efficiency of eddy-current damping, and avoids the influence to various components around；
(5) a kind of axial displacement scale-up version eddy current damper of the invention, design rationally, it is simple structure, easy for installation.
Detailed description of the invention
Fig. 1 is a kind of A-A sectional view of axial displacement scale-up version eddy current damper provided in an embodiment of the present invention；
Fig. 2 is a kind of B-B sectional view of axial displacement scale-up version eddy current damper provided in an embodiment of the present invention；
Fig. 3 is a kind of C-C sectional view of axial displacement scale-up version eddy current damper provided in an embodiment of the present invention；
In figure: 1 oval hollow body；2 cover boards；3 bolts；4 slide bars；5 gear a；6 gear b；7 gear c；8 copper sheets；9 permanent magnetism
Body；10 ball a；11 ball b；12 ball c；13 partitions；14 hinges；15U type bar.
Specific embodiment
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
Those of ordinary skill's all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Please refer to Fig. 1 to Fig. 2, an implementation of provided in an embodiment of the present invention kind of axial displacement amplification eddy current damper
Example, including oval hollow body 1, cover board 2, bolt 3, slide bar 4, gear a 5, gear b 6, gear c 7, copper sheet 8, permanent magnet 9, rolling
Pearl a 10, ball b 11, ball c 12, partition 13, hinge 14, U-shaped bar 15.
In the present embodiment, oval hollow body 1 and cover board 2 are connected by bolt 3, and the two constitutes the outer of entire damping unit
Shell；
When vibration occurs, slide bar 4 slides axially by the ball a 10 on shell, the slip band moving gear a of slide bar 4
5 rotation.In the inside of slide bar 4, tooth is processed on top, and ball b 11 is installed in lower part near gear a 5, around ball b 11
Slide bar 4 be processed into "convex" shaped, ball b 11 is mounted on the position outstanding of "convex" shaped slide bar 4.Gear a 5 is processed into two sides
The tooth of the shape that middle part with teeth is anodontia, two sides is engaged with the tooth on slide bar 4, and the part that middle part is anodontia is closely pasted with ball b 11
It closes, then the equal stress in two sides up and down of gear a 5, can prevent unilateral stress to be out of gear, improve transmission efficiency；
Gear b 6 is consolidated with gear a 5 and rotates simultaneously, and the rotation axis of the two passes through partition 13；
Gear c 7 is engaged with gear b 6, and part of the gear c 7 between two pieces of partitions 13 is with teeth, and remainder is anodontia
Cylinder, entire gear c 7 pass through partition 13 connect with copper sheet 8 and rotate simultaneously, the ball c 12 on partition 13 rises
To the effect for reducing by 7 pivoting friction of gear c.Permanent magnet 9 is located at 8 two sides of copper sheet；
Hinge 14 is located at the ends of whole device, can be freely rotated, and when use plays connection structure object and damper；
The present invention, which converts the axial movement of slide bar 3 to the rotation of copper sheet 8 and generate current vortex, to consume energy, and takes adjustment
The mode of gear size, which rotates copper sheet 8, amplifies, and the shorter displacement of slide bar 3 can cause the copper sheet 8 of larger angle to rotate, and consumes energy
Efficiency greatly improves；The distance of permanent magnet 9 is arrived by adjusting the magnetic field strength of permanent magnet 9, the thickness of copper sheet 8, copper sheet 8,
To realize the adjusting of damping parameter；Continuously magnetic field sources are provided using permanent magnet 9, are not necessarily to outside resources, can be generated long-term
Stable effectiveness in vibration suppression；Using permeability magnetic material, it is possible to prevente effectively from the leakage field of magnetic circuit, not only increases the effect of eddy-current damping
Rate, and avoid the influence to various components around；The present invention has rational design, simple structure, easy for installation, has good
Application prospect.
Need to pay attention to when the design present invention: the radius of first, gear b 6 are greater than the radius of gear c 7；Second, it is described whole
A device is made of permeability magnetic material, and ball is spherical steel ball, and all ball coating lubricating oils are to reduce friction；Third, slide bar 4
"convex" shaped is processed at middle part, and 5 two sides gear a middle part with teeth is anodontia, and upper and lower two sides are contacted with slide bar 4, can prevent unilateral side
Stress is out of gear, to improve transmission efficiency；4th, the stroke of slide bar 4 is controlled by U-shaped bar 15 and crust of the device.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to
This, all this kind above content according to the present invention is not departing from this according to the ordinary technical knowledge and customary means of this field
Modification, replacement or change under the premise of inventing above-mentioned basic fundamental thought, to other diversified forms that above structure of the present invention is made
More, it should all fall within the scope and spirit of the invention.
Claims (5)
1. a kind of axial displacement scale-up version eddy current damper, which is characterized in that the axial displacement scale-up version current vortex resistance
Buddhist nun's device is mainly by oval hollow body (1), cover board (2), bolt (3), slide bar (4), gear a (5), gear b (6), gear c (7), copper
Piece (8), permanent magnet (9), ball a (10), ball b (11), ball c (12), partition (13), hinge (14) and U-shaped bar (15) composition；
The oval hollow body (1) and cover board (2) is connected by bolt (3), and the two constitutes the shell of entire damping unit；
The slide bar (4) is the bar structure of inner hollow, and outer surface passes through shell by the ball a (10) of interior of shell
And it slides axially；Slide bar (4) inner surface is divided into upper inner surface and lower inner surface, and upper inner surface is processed into tooth, with gear a
(5) it is engaged；Lower inner surface is machined with "convex" shaped region, and ball b (11) is located at the prominent position in "convex" shaped region, ball b
(11) it is located near gear a (5)；
The two sides middle part with teeth of the gear a (5) is anodontia, and the tooth of two sides is engaged with the tooth on slide bar (4), the portion that middle part is anodontia
Divide and is fitted closely with ball b (11)；
Gear b (6) and the gear a (5) is consolidated while rotating, and the rotation axis of the two passes through partition (13)；
The gear c (7) is engaged with gear b (6), is rotated by the ball c (12) on partition (13), gear c (7) exists
Part between two pieces of partitions (13) is with teeth, and remainder is anodontia cylinder；
The copper sheet (8) is fixed on gear c (7) end, rotates with the rotation of gear c (7)；
The permanent magnet (9) is located at copper sheet (8) two sides；
The hinge (14) is located at the end of whole device, is freely rotated.
2. axial displacement scale-up version eddy current damper according to claim 1, which is characterized in that the gear b (6)
Radius be greater than gear c (7) radius.
3. axial displacement scale-up version eddy current damper according to claim 1 or 2, which is characterized in that described is entire
Device is made of permeability magnetic material, and ball a (10), ball b (11) and ball c (12) are spherical steel ball.
4. axial displacement scale-up version eddy current damper according to claim 1 or 2, which is characterized in that the slide bar
Stroke controlled by U-shaped bar and crust of the device.
5. axial displacement scale-up version eddy current damper according to claim 3, which is characterized in that the row of the slide bar
Journey is controlled by U-shaped bar (15) and crust of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158651.6A CN109751352B (en) | 2019-03-04 | 2019-03-04 | Axial displacement amplification type eddy current damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158651.6A CN109751352B (en) | 2019-03-04 | 2019-03-04 | Axial displacement amplification type eddy current damper |
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| Publication Number | Publication Date |
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| CN109751352A true CN109751352A (en) | 2019-05-14 |
| CN109751352B CN109751352B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910158651.6A Active CN109751352B (en) | 2019-03-04 | 2019-03-04 | Axial displacement amplification type eddy current damper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499836A (en) * | 2019-09-20 | 2019-11-26 | 大连理工大学 | Self-resetting tuned mass damper based on current vortex and marmem technology |
| CN110528719A (en) * | 2019-09-20 | 2019-12-03 | 大连理工大学 | A kind of coupling beam shear displacemant scale-up version eddy current damper |
| WO2020177045A1 (en) * | 2019-03-04 | 2020-09-10 | 大连理工大学 | Axial displacement amplification-type eddy current damper |
| CN112178104A (en) * | 2020-11-06 | 2021-01-05 | 大连理工大学 | Rapid Assembly length self-adaptation type eddy current damper |
| WO2021051374A1 (en) * | 2019-09-20 | 2021-03-25 | 大连理工大学 | Coupling beam shear displacement amplification-type eddy current damper |
| CN113803395A (en) * | 2021-09-30 | 2021-12-17 | 北京筑信润捷科技发展有限公司 | Eddy current damper of rotating mechanism |
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| CN110528719A (en) * | 2019-09-20 | 2019-12-03 | 大连理工大学 | A kind of coupling beam shear displacemant scale-up version eddy current damper |
| WO2021051374A1 (en) * | 2019-09-20 | 2021-03-25 | 大连理工大学 | Coupling beam shear displacement amplification-type eddy current damper |
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| CN112178104A (en) * | 2020-11-06 | 2021-01-05 | 大连理工大学 | Rapid Assembly length self-adaptation type eddy current damper |
| CN113803395A (en) * | 2021-09-30 | 2021-12-17 | 北京筑信润捷科技发展有限公司 | Eddy current damper of rotating mechanism |
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