CN207437653U - Rotary-type axial direction eddy current damper in a kind of A seating - Google Patents
Rotary-type axial direction eddy current damper in a kind of A seating Download PDFInfo
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- CN207437653U CN207437653U CN201721466482.5U CN201721466482U CN207437653U CN 207437653 U CN207437653 U CN 207437653U CN 201721466482 U CN201721466482 U CN 201721466482U CN 207437653 U CN207437653 U CN 207437653U
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Abstract
The utility model discloses rotary-type axial direction eddy current damper in a kind of A seating, including：Outer barrel, the inner cylinder being arranged in outer barrel and the drive component being sequentially connected with inner cylinder, drive component driving inner cylinder rotates, further include one or more groups of eddy-current damping components, when equipped with multigroup eddy-current damping component, multigroup eddy-current damping component includes along inner cylinder or the axial arranging of outer barrel, every group of eddy-current damping component：Coil block and magnet assembly, along the circumferentially wound on its outer wall of inner cylinder, magnet assembly includes coil block：The magnetic piece of multi-disc sheet, multi-disc magnetic piece is along the circumferentially disposed wall in the inner of outer barrel.The utility model is arranged at using the magnetic piece of multi-disc sheet on outer tube inner wall, the manufacture craft of sheet-like magnetic piece is simpler compared to the manufacture craft of annular permanent magnet, it is more convenient for being adjusted the structure of magnet assembly according to specific situation, makes its magnetic field utilization rate higher.
Description
Technical field
The utility model belongs to building structure and subtracts technical field of isolation, and in particular to rotary-type axial electric whirlpool in a kind of A seating
Damper.
Background technology
In the construction of modern building, bridge etc., the shock resistance of structure oneself through becoming the key of designer's consideration
Problem.With the development of technology, damper just plays an important role.In recent years, electromagnetic eddy technology is also employed for hindering
In Buddhist nun's device, basic principle is：Conductor does cutting magnetic line movement in magnetic field, will be generated in conductor and senses electric current, according to stupefied
Secondary law, the raw effect of induced electricity miscarriage are always resistant to generate faradic reason, this will hinder fortune of the conductor in magnetic field
It is dynamic, that is, generate electromagnetic damping.The rotary damper designed using ball guide screw nat principle is swashed being subject to earthquake, wind shake etc.
After encouraging, leading screw axially moves, while nut rotates.
And the usual structure of existing eddy current damper includes outer barrel, inner cylinder and leading screw, wherein, inner cylinder is located in outer barrel
Portion, the outer circumferential surface of inner cylinder are provided with coil, and annular permanent magnet is provided on the inner wall of outer barrel, and annular permanent magnet and coil correspondence are set
It puts.However, the magnet structure of annular has a limitation, installation it is inconvenient, it is necessary to by annular permanent magnet forge into in outer barrel
Wall matches, complex manufacturing technology, and the cycle is long.
Utility model content
In order to solve the above-mentioned technical problem, the utility model proposes rotary-type axial direction eddy-current dampings in a kind of A seating
Device.
In order to achieve the above object, the technical solution of the utility model is as follows：
Rotary-type axial direction eddy current damper in a kind of A seating, including：Outer barrel, the inner cylinder being arranged in outer barrel and with it is interior
The drive component that cylinder is sequentially connected, drive component driving inner cylinder rotate, and one or more groups of eddy-current damping components are further included, when setting
When having multigroup eddy-current damping component, multigroup eddy-current damping component is hindered along inner cylinder or the axial arranging of outer barrel, every group of current vortex
Buddhist nun's component includes：Coil block and magnet assembly, coil block is along the circumferentially wound on its outer wall of inner cylinder, magnet assembly bag
It includes：The magnetic piece of multi-disc sheet, multi-disc magnetic piece is along the circumferentially disposed wall in the inner of outer barrel.
The utility model is arranged at using the magnetic piece of multi-disc sheet on outer tube inner wall, the manufacture craft phase of sheet-like magnetic piece
It is simpler compared with the manufacture craft of annular permanent magnet, it is more convenient for being adjusted the structure of magnet assembly according to specific situation,
Make its magnetic field utilization rate higher.
Rotary-type axial direction eddy current damper is simple in structure in a kind of A seating of the utility model, there is apparent damping to imitate
Fruit, damping force are big；Using internal rotation type structure, the security of equipment operation is substantially increased, reduces external condition to equipment
Interference.
Based on the above technical solutions, following improvement can also be done：
As preferred scheme, coil block is copper ring, and magnet assembly is permanent magnet or electromagnet.
Using the above preferred scheme, the utility model is using copper ring as coil block, and damping is more preferably.When
During using permanent magnet as magnet assembly, without external power, greatly reduce to extraneous dependence.When using electromagnet conduct
During magnet assembly, this damper can be transformed into from intelligent damper, magnetic field caused by magnet assembly is more controllable.
Exist as preferred scheme, between the coil block and magnet assembly in same group of eddy-current damping component certain
Gap, and the gap is adjusted.
Using the above preferred scheme, the actual output of damper can be suitably adjusted, meets engineering reality to greatest extent
Border needs.Can appropriate adjustment be carried out by the gap that is arranged at of gasket.
As preferred scheme, it is equipped between magnet assembly and the inner wall of outer barrel every magnetic device.
Using the above preferred scheme, the efficient utilization in magnetic field can be effectively realized.
As preferred scheme, when setting multigroup eddy-current damping component, the magnet assembly of adjacent eddy-current damping component
Magnetism it is opposite.
Using the above preferred scheme, it can be achieved that the utilization of magnetic field higher efficiency.
As preferred scheme, drive component includes：Driving device and the ball screw being sequentially connected with driving device,
Ball screw is fixedly connected with inner cylinder, and inner cylinder is rotatablely connected with outer barrel by rolling bearing.
Using the above preferred scheme, using transmission parts of the ball-screw as power, the transmission of power is more stable,
It is better.
As preferred scheme, the capping for being secured to connection, the position of the sealing of capping are equipped on the end face of outer barrel
The position of hydraulic fluid port is lubricated corresponding to rolling bearing, in capping being equipped with cushion block between the rolling bearing of capping, covers, is close
It is fixedly connected between the rolling bearing of capping and the cushion block by screw.
Using the above preferred scheme, the problems such as can effectively overcoming the oil leak of similar viscous damper, and screw-type
Connection mode simplifies assembly method, safeguards simple and convenient.
As preferred scheme, on outer barrel, the bottom for being secured to connection is equipped with compared with the end face of capping opposite side
Plate；Cushion block, bottom plate, rolling bearing and the cushion block close to bottom plate also are provided between the rolling bearing of bottom plate and close bottom plate
Between be fixedly connected also by screw.
Using the above preferred scheme, the problems such as can effectively overcoming the oil leak of similar viscous damper, and screw-type
Connection mode simplifies assembly method, safeguards simple and convenient.
As preferred scheme, one or more spiral heat dissipations are equipped on the inner wall of outer barrel and/or on the outer wall of inner cylinder
Blade.
Using the above preferred scheme, the abundant heat dissipation of damper is ensured.
As preferred scheme, when equipped with multigroup eddy-current damping component, spiral heat dissipation blade is arranged at adjacent current vortex
Between damper assembly, and multiple equally distributed through holes are equipped on spiral heat dissipation blade.
Using the above preferred scheme, the abundant heat dissipation of damper is ensured, and the setting of through hole reduces spiral heat dissipation blade
Influence to magnetic field.
As preferred scheme, when setting multigroup eddy-current damping component, the distance between adjacent eddy-current damping component
It is identical, and the distance between adjacent magnetic piece is also identical.
Using the above preferred scheme, being evenly distributed for magnetic field is ensured.
Description of the drawings
Fig. 1 be rotary-type axial eddy current damper in a kind of A seating for providing of the utility model embodiment sectional view it
One.
Fig. 2 is A portions partial enlarged view in Fig. 1.
Fig. 3 be rotary-type axial eddy current damper in a kind of A seating for providing of the utility model embodiment sectional view it
Two.
Wherein：Outer barrel 1, inner cylinder 2, eddy-current damping component 3, coil block 31, magnet assembly 32, magnetic piece 33, ball
Screw 4, rolling bearing 5, every magnetic device 6, capping 7, cushion block 8, screw 9, bottom plate 10.
Specific embodiment
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
In order to reach the purpose of this utility model, some of them of rotary-type axial eddy current damper are real in a kind of A seating
It applies in example, as shown in figs. 1 and 3, rotary-type axial direction eddy current damper in a kind of A seating, including：Outer barrel 1 is arranged in outer barrel 1
Inner cylinder 2 and the drive component that is sequentially connected with inner cylinder 2, drive component driving inner cylinder 2 rotate, further include the resistance of three groups of current vortexs
Buddhist nun's component 3, three groups of eddy-current damping components 3 include along inner cylinder 2 or the axial arranging of outer barrel 1, every group of eddy-current damping component 3：
Coil block 31 and magnet assembly 32, along the circumferentially wound on its outer wall of inner cylinder 2, magnet assembly 32 includes coil block 31：
The magnetic piece 33 of ten sheets, ten magnetic pieces 33 are along the circumferentially disposed wall in the inner of outer barrel 1.Wherein, coil block 31 is
Copper ring, magnet assembly 32 are permanent magnet.
Drive component includes：Driving device and with driving device be sequentially connected ball screw 4, ball screw 4 with it is interior
Cylinder 2 is fixedly connected, and inner cylinder 2 is rotatablely connected with outer barrel 1 by rolling bearing 5.
Under the action of drive component, ball screw 4, inner cylinder 2 occur to turn together with the copper ring being fixed on its outer wall
Dynamic, copper ring is in local magnetic field and in cutting magnetic line state, generates current vortex at this time；Meanwhile current vortex generate with
The opposite new magnetic field of magnetic field, so as to generate electromagnetic damping between former magnetic field and conductor.When copper ring is in local magnetic field
During middle movement, the magnetic flux of copper ring part changes, and generates eddy current effect in copper ring at once.Vortex flow is made with magnetic field
With, and generate a counter-force for hindering copper ring movement, i.e. eddy-current damping power.In this course, copper ring and magnetic field
The kinetic energy of relative motion is first changed into electric energy, then is converted into thermal energy consumption in air in copper ring, then plays energy consumption and subtracts
The effect shaken.
If the eddy-current damping coefficient that single eddy-current damping component 3 generates is CD, disregard it can be proved that working as in revolute
Frictional force when, equivalent axial damped coefficient C that single eddy-current damping component 3 generates1For：
In formula, r is the outer diameter of copper ring；H is the helical pitch of ball-screw 4.Since r is much larger than h, equivalent axial damping
Coefficient C1Much larger than eddy-current damping coefficient CD。
In the utility model A seating in rotary-type axial direction eddy current damper, there is provided three eddy-current damping groups arranged side by side
Part, therefore its total Equivalent damping coefficient is：
C=3C1
Consider from economy, on the premise of performance indicator is met, it is desirable to which the volume of permanent magnet used is as far as possible
Ground is small.
The definite of permanent magnet minimum volume can refer to the following formula：
In formula, Vm--- the volume of water magnet；
Bδ--- air gap flux density；
(-Hm.Bm) --- the magnetic energy product of permanent magnet.
To obtain required air gap flux density Bδ, should as much as possible work range selection on demagnetizing curve magnetic energy product (- HmBm)
For maximum this point, so that the volume of permanent magnet is minimum.On the other hand, for different permanent magnets, maximum magnetic energy product (-
HmBm)maxIt is bigger, it is just fewer to generate permanent-magnet material required during same air gap flux density.
In addition to eddy-current damping power, the rotating inertial mass square of inner cylinder 2 is converted to one by the effect of ball-screw 4
Very big damper adds axial quality.If the torsion moment of mass summation of inner cylinder 2 and the copper ring being fixed thereon is I, can
To prove, under conditions of without considering transmission loss, the equivalent additional mass m of axial movement of the damper is：
It can be seen that when the helical pitch h very littles of ball-screw 4, the torsion moment of mass of inner cylinder 2 can be amplified hundreds times,
The very big axial movement equivalent mass of stroke, additional axial direction quality generate the axial inertia force that damper is hindered to be axially moved,
Make the damper that there are very big negative stiffness effects, further improve the earthquake resistant control effect of eddy current damper.
Rotary-type axial direction eddy current damper has the beneficial effect that in a kind of A seating of the utility model：
1) it is arranged at using the magnetic piece 33 of multi-disc sheet on 1 inner wall of outer barrel, the manufacture craft of sheet-like magnetic piece 33 is compared
It is simpler in the manufacture craft of annular permanent magnet, it is more convenient for being adjusted the structure of magnet assembly 32 according to specific situation,
Make its magnetic field utilization rate higher.
2) rotary-type axial direction eddy current damper is simple in structure in a kind of A seating of the utility model, there is apparent damping to imitate
Fruit, damping force are big.
3) using internal rotation type structure, the interference due to external condition is efficiently solved caused by damper normal operation
Adverse effect substantially increases the security of equipment operation.
4) using copper ring as coil block 32, damping is more preferably.
5), without external power, greatly reduced using permanent magnet as magnet assembly 31 to extraneous dependence.
It is worth noting that, the above embodiments are only one of embodiment, can suitably adjust electric in damper
The quantity of eddy current damping component 3 adjusts the quantity of magnetic piece 33, number of turns of copper ring etc. is adjusted, to adjust the reality of damper
Border is contributed, it is made to meet the actual needs of engineering to greatest extent.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, the difference is that, magnet assembly 31 is electromagnet.
Using the above preferred scheme, when using electromagnet as magnet assembly 31, this damper can be transformed into certainly
Intelligent damper, magnetic field caused by magnet assembly are more controllable.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, the difference is that, there are one between the coil block 32 and magnet assembly 31 in same group of eddy-current damping component 3
Fixed gap, and the gap is adjusted.
Using the above preferred scheme, the actual output of damper can be suitably adjusted, meets engineering reality to greatest extent
Border needs.Can appropriate adjustment be carried out by the gap that is arranged at of gasket.
As shown in Fig. 2, in order to further optimize the implementation result of the utility model, in other embodiment,
Remaining feature technology is identical, the difference is that, it is equipped between the inner wall of magnet assembly 31 and outer barrel 1 every magnetic device 6.
Using the above preferred scheme, the efficient utilization in magnetic field can be effectively realized.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, the difference is that, the capping 7 for being secured to connection is equipped on the end face of outer barrel 1, covers the position of 7 sealing
The position of hydraulic fluid port is lubricated corresponding to rolling bearing 5, cushion block 8, capping are equipped between the rolling bearing 5 of capping 7 and close capping 7
7th, it is fixedly connected between the rolling bearing 5 and the cushion block 8 of capping 7 by screw 9.
Using the above preferred scheme, the problems such as can effectively overcoming the oil leak of similar viscous damper, and screw-type
Connection mode simplifies assembly method, safeguards simple and convenient.
Further, on outer barrel 1, the bottom plate 10 for being secured to connection is equipped with compared with the end face of 7 opposite sides of capping；
Bottom plate 10 and also be provided with cushion block 9 between the rolling bearing 5 of bottom plate 10, bottom plate 10, close to bottom plate 10 rolling bearing 5 and
It is fixedly connected between the cushion block 8 also by screw 9.
Using the above preferred scheme, the problems such as can effectively overcoming the oil leak of similar viscous damper, and screw-type
Connection mode simplifies assembly method, safeguards simple and convenient.
Further, it is fixedly connected between ball-screw 4, inner cylinder 2 and rolling bearing 5 also by screw 9.
Further, it is fixedly connected between capping 7 and outer barrel 1 by screw 9.
Further, it is fixedly connected between bottom plate 10 and outer barrel 1 by screw 9.
Using the above preferred scheme, rotary-type axial direction eddy current damper in the utility model A seating, structure many places are adopted
It is connected with screw, assembly method is simplified, and maintenance is simple and convenient, and mechanical strength is more preferably.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, the difference is that, the magnetism of the magnet assembly of adjacent eddy-current damping component 3 is opposite.
Using the above preferred scheme,
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, the difference is that, one or more spiral heat dissipation leaves are equipped on the inner wall of outer barrel 1 and/or on the outer wall of inner cylinder 2
Piece (not shown).
Using the above preferred scheme, the abundant heat dissipation of damper is ensured.
Further, spiral heat dissipation blade is arranged between adjacent eddy-current damping component 3, and is set on spiral heat dissipation blade
There are multiple equally distributed through holes.
Using the above preferred scheme, the abundant heat dissipation of damper is ensured, and the setting of through hole reduces spiral heat dissipation blade
Influence to magnetic field.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, the difference is that, the distance between adjacent eddy-current damping component 3 is identical, and between adjacent magnetic piece 33 away from
From also identical.
Using the above preferred scheme, being evenly distributed for magnetic field is ensured.
In order to further optimize the implementation result of the utility model, in other embodiment, remaining feature skill
Art is identical, the difference is that, radiator is set on outer barrel 1 and/or inner cylinder 2.
Using the above preferred scheme, the abundant heat dissipation of damper is ensured.Radiator can be radiator fan, heat-radiating rod etc.
Deng.
It is worth noting that, the application can set one group of eddy-current damping component 3, damper structure can also be transformed
Into the form of the structure type of common viscous damper, i.e. both ends oscillating bearing.
Above is only the preferred embodiment of the utility model, it is noted that for those of ordinary skill in the art
For, on the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this
The protection domain of utility model.
Claims (10)
1. rotary-type axial direction eddy current damper in a kind of A seating, including：Outer barrel, the inner cylinder being arranged in the outer barrel and with
The drive component that the inner cylinder is sequentially connected, the driving component drive the inner cylinder to rotate, which is characterized in that further include one group
Or multigroup eddy-current damping component, when equipped with multigroup eddy-current damping component, multigroup eddy-current damping component is described in
The axial arranging of inner cylinder or outer barrel, eddy-current damping component includes described in every group：Coil block and magnet assembly, the coil group
Along the circumferentially wound on its outer wall of the inner cylinder, the magnet assembly includes part：The magnetic piece of multi-disc sheet, magnetic described in multi-disc
Property piece is along the circumferentially disposed wall in the inner of the outer barrel.
2. rotary-type axial direction eddy current damper in A seating according to claim 1, which is characterized in that the coil block
For copper ring, the magnet assembly is permanent magnet or electromagnet.
3. rotary-type axial direction eddy current damper in A seating according to claim 2, which is characterized in that electric described in same group
There are certain interval between coil block and magnet assembly in eddy current damping component, and the gap is adjusted.
4. rotary-type axial direction eddy current damper in A seating according to claim 3, which is characterized in that in the magnetic group
It is equipped between the inner wall of part and the outer barrel every magnetic device.
5. rotary-type axial direction eddy current damper in A seating according to claim 4, which is characterized in that multigroup described when setting
During eddy-current damping component, the magnetism of the magnet assembly of the adjacent eddy-current damping component is opposite.
6. according to rotary-type axial direction eddy current damper in claim 1-5 any one of them A seating, which is characterized in that described
Drive component includes：Driving device and with the driving device be sequentially connected ball screw, the ball screw with it is described
Inner cylinder is fixedly connected, and the inner cylinder is rotatablely connected with the outer barrel by rolling bearing.
7. rotary-type axial direction eddy current damper in A seating according to claim 6, which is characterized in that in the outer barrel
End face is equipped with the capping for being secured to connection, and the position of the sealing of the capping corresponds to the rolling bearing and lubricates hydraulic fluid port
Position；
Cushion block is equipped between the rolling bearing of the capping and the close capping, the capping turns close to the capping
It is fixedly connected between dynamic bearing and the cushion block by screw.
8. rotary-type axial direction eddy current damper in A seating according to claim 7, which is characterized in that in the outer barrel
On, the bottom plate for being secured to connection is equipped with compared with the end face of the capping opposite side；
Cushion block also is provided between the bottom plate and rolling bearing close to the bottom plate, the bottom plate, close to the bottom plate
It is fixedly connected between rolling bearing and the cushion block also by screw.
9. rotary-type axial direction eddy current damper in A seating according to claim 8, which is characterized in that in the outer barrel
On inner wall and/or the outer wall of the inner cylinder is equipped with one or more spiral heat dissipation blades.
10. rotary-type axial direction eddy current damper in A seating according to claim 9, which is characterized in that when equipped with multigroup
The eddy-current damping component, the spiral heat dissipation blade are arranged between the adjacent eddy-current damping component, and in spiral
Radiator shutter is equipped with multiple equally distributed through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721466482.5U CN207437653U (en) | 2017-11-06 | 2017-11-06 | Rotary-type axial direction eddy current damper in a kind of A seating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721466482.5U CN207437653U (en) | 2017-11-06 | 2017-11-06 | Rotary-type axial direction eddy current damper in a kind of A seating |
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|---|---|
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ID=62291167
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| CN201721466482.5U Active CN207437653U (en) | 2017-11-06 | 2017-11-06 | Rotary-type axial direction eddy current damper in a kind of A seating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775371A (en) * | 2018-06-18 | 2018-11-09 | 重庆大学 | Damping and the controllable MR damper of negative stiffness |
| CN109027090A (en) * | 2018-10-25 | 2018-12-18 | 华北水利水电大学 | Ternary vibration absorber, design and the assembly method of parallel connection damping and used matter unit |
| CN109356964A (en) * | 2018-11-21 | 2019-02-19 | 东南大学 | A kind of electric eddy-current damping device for multi-rotor unmanned aerial vehicle |
| CN109488712A (en) * | 2018-12-28 | 2019-03-19 | 安邸建筑环境工程咨询(上海)有限公司 | A kind of eddy current damper |
| CN112160235A (en) * | 2020-09-27 | 2021-01-01 | 湖南省潇振工程科技有限公司 | Eddy current damping steel support for bridge |
| CN115030981A (en) * | 2022-05-18 | 2022-09-09 | 广东明阳电气股份有限公司 | Shock absorption pull rod and transformer with same |
-
2017
- 2017-11-06 CN CN201721466482.5U patent/CN207437653U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775371A (en) * | 2018-06-18 | 2018-11-09 | 重庆大学 | Damping and the controllable MR damper of negative stiffness |
| CN109027090A (en) * | 2018-10-25 | 2018-12-18 | 华北水利水电大学 | Ternary vibration absorber, design and the assembly method of parallel connection damping and used matter unit |
| CN109027090B (en) * | 2018-10-25 | 2023-08-04 | 华北水利水电大学 | Ternary vibration damper with parallel damping and inertial unit, design and assembly method |
| CN109356964A (en) * | 2018-11-21 | 2019-02-19 | 东南大学 | A kind of electric eddy-current damping device for multi-rotor unmanned aerial vehicle |
| CN109488712A (en) * | 2018-12-28 | 2019-03-19 | 安邸建筑环境工程咨询(上海)有限公司 | A kind of eddy current damper |
| CN112160235A (en) * | 2020-09-27 | 2021-01-01 | 湖南省潇振工程科技有限公司 | Eddy current damping steel support for bridge |
| CN115030981A (en) * | 2022-05-18 | 2022-09-09 | 广东明阳电气股份有限公司 | Shock absorption pull rod and transformer with same |
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