CN209370339U - A kind of stagewise eddy current damper - Google Patents
A kind of stagewise eddy current damper Download PDFInfo
- Publication number
- CN209370339U CN209370339U CN201822113195.7U CN201822113195U CN209370339U CN 209370339 U CN209370339 U CN 209370339U CN 201822113195 U CN201822113195 U CN 201822113195U CN 209370339 U CN209370339 U CN 209370339U
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- pull rod
- magnet
- current vortex
- vortex plate
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Abstract
A kind of stagewise eddy current damper, structure include shielding case, 2 pieces of permanent magnets, 1 piece of rubber magnet, 2 piece of first current vortex plate, 2 piece of second current vortex plate, hold-down support, active pull rod and pull rod cylinder.Under external action, the second current vortex plate is driven to move along the limit hole on pull rod cylinder by active pull rod, change the second current vortex plate and generate current vortex energy consumption at a distance from magnet, and the Lorentz force tension and compression rubber magnet thickness by generating hinders the change consumption of magnetic flux；When the mobile displacement of active pull rod exceeds the limiting displacement of limit hole, active pull rod will drive pull rod cylinder to move together by gag lever post thereon, change the first current vortex plate and unilateral permanent magnet distance consumes energy, wherein the position of 2 pieces of permanent magnets and 4 blocks of current vortex plates is arranged symmetrically, totally 2 grades of level-one damping force of composition, tiered collaboration, power transmission are uniform two-by-two, the magnetic field for making full use of magnet improves the damping force of damper.
Description
Technical field
The utility model relates to vibration damping control technologies, and in particular to stagewise eddy current damper.
Background technique
Damper is introduced into domestic and international each large-engineering by people since 20th century, research and hair by decades
Exhibition has become the mature effective ways of one of vibration damping control field using various damper energy-absorbing energy-dissipating systems, widely
Applied to structural vibration reduction control field, such as Taipei 101 mansion, Shanghai center etc..
Nowadays, damper used in practical engineering application is various informative, and most of dampers all use hydraulic viscous
Damper provides damping force, finds in long-term use, and viscous damper has easy oil leakage, is not easy to support when providing damping force
Shield, be not alinear viscous damp and have the shortcomings that shear additional stiffness, this influence Structural Design analyze while, also without
The expense that structure late maintaining is increased in shape improves the overall cost of structure.
Eddy current damper is big innovation on the basis of conventional damper, mainly using non-magnetic conductor in magnetic field
When middle cutting magnetic line movement, according to Faraday's electromagnetic induction law, corresponding induced electromotive force is generated in conductor, forms electric whirlpool
Stream.According to Lenz's law, current vortex can generate a new magnetic field opposite with magnetic field simultaneously, formed and hinder the two opposite
The damping force of movement, the structure so recycled eventually lead to vibrational energy and are consumed by the resistance fuel factor of conductor, this is just
It is so-called eddy-current damping.Its main advantage: contactless, no frictional damping, no oil leakage phenomenon facilitate utilization and maintenance, resistance to
Long property is good etc..
But presently, there are eddy current damper, damped coefficient is low, and magnetic field utilization rate is not high, how to further increase damping
The damping force of device makes it more widely use the certainty of each vibration damping control field of society and current social development
It is required that.
Summary of the invention
The purpose of the utility model is to provide a kind of good stagewise eddy current dampers of damping property.
The utility model is a kind of stagewise eddy current damper, including shielding case 8, magnet, current vortex plate, hold-down support
5, pull rod is driven, for the shielding case 8 using cylindric type, the magnet includes 2 pieces of permanent magnet 7 and 1 piece rubber magnets
9, it is both secured on the inner wall of shielding case 8；The hold-down support 5 is equipped with 2 pieces, is connected to the upper and lower ends of shielding case 8；
The current vortex plate is equipped with 2 piece of first the second current vortex of current vortex plate 6 and 2 piece plate 3, and is respectively separated and is mounted on described 2
Between block permanent magnet 7 and 1 piece rubber magnet 9；The driving pull rod is equipped with symmetrical above and below 2 sets, and every set includes actively
Pull rod 4 and cover the pull rod cylinder 1 on active pull rod 4, between the two by limit hole 11 and gag lever post 10 can occur it is default away from
From relative motion, pull rod cylinder 1 pass through 5 center of hold-down support connect the first current vortex plate 6 on, active pull rod 4 sequentially passes through drawing
Bar cylinder 1, the first current vortex plate 6, permanent magnet 7 are connected on the second current vortex plate 3, under external action, tension and compression active pull rod
4 are able to drive pull rod cylinder 1 moves within a preset range, change the first current vortex plate 6 and between permanent magnet 7 and rubber magnet 9
Between distance generate current vortex energy consumption, while the Loulun magnetism generated between the second current vortex plate 3 and rubber magnet 9 passes through drawing
The thickness of rubber magnet 9 is pressed to hinder the change of magnetic flux, to consume energy.
Compared with prior art, the utility model has the beneficial effect that damping force provided by the utility model is divided into two
Grade: the first order drives the second current vortex plate to move along the limit hole on pull rod cylinder, changes the second current vortex by active pull rod
Plate generates current vortex energy consumption at a distance from magnet, and hinders the change of magnetic flux to consume by Lorentz force tension and compression rubber magnet thickness
Amount；The second level, when the mobile displacement of active pull rod exceeds the limiting displacement of limit hole, active pull rod will pass through limit thereon
Position bar drives the movement of pull rod cylinder, and the first current vortex plate of end consumes energy with far from or close to unilateral permanent magnet.Two
Grade cooperation, power transmission is uniform, makes full use of the magnetic field of magnet, improves the damping force of damper, reaches preferable effectiveness in vibration suppression.2,
Each magnet poles are positioned opposite, the center between magnet, current vortex plate power not dampened, are in stable equilibrium's shape
State.3, the eddy current damper of the utility model is each according to shielding case inner space deployment scenarios flexible design various pieces
It is welded to connect, is processed easy to assembly by driving pull rod between part；4, the major function of the utility model is vibration damping control, tool
There are good durability and practicability, simple structure is easy for construction, and use scope is extensive.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model, and Fig. 2 is the appearance diagram that active pull rod is combined with pull rod cylinder, Fig. 3
It is the sectional view along axial line, Fig. 4 is hold-down support and current vortex plate structural schematic diagram, and Fig. 5 is magnet and alloy hoop structure
Schematic diagram；The structure type of 2 pieces of permanent magnets is the same, using being identically numbered, wherein 1: pull rod cylinder, and 2: alloy hoop
Hoop, 3: the second current vortex plates, 4: active pull rod, 5: hold-down support, 6: the first current vortex plates, 7: permanent magnet, 8: shielding case, 9:
Rubber magnet, 10: gag lever post, 11: limit hole, 12: connecting hole, 51:1 cylindrical hole, 61:2 cylindrical hole, 71: card slot.
Specific embodiment
As shown in Fig. 1 ~ 5, the utility model is a kind of stagewise eddy current damper, including shielding case 8, magnet, electric whirlpool
Flowing plate, hold-down support 5 drive pull rod, and for the shielding case 8 using cylindric type, the magnet includes 2 pieces of permanent magnets 7
With 1 piece of rubber magnet 9, it is both secured on the inner wall of shielding case 8；The hold-down support 5 is equipped with 2 pieces, is connected to shielding
The upper and lower ends of shell 8；The current vortex plate is equipped with 2 piece of first the second current vortex of current vortex plate 6 and 2 piece plate 3, and is respectively separated
It is mounted between 3 pieces of magnets；The driving pull rod is equipped with symmetrical above and below 2 sets, and every set includes 4 He of active pull rod
The pull rod cylinder 1 on active pull rod 4 is covered, the opposite of pre-determined distance can be occurred by limit hole 11 and gag lever post 10 between the two
Movement, pull rod cylinder 1 pass through 5 center of hold-down support and connect on the first current vortex plate 6, and active pull rod 4 sequentially passes through pull rod cylinder 1, the
One current vortex plate 6, permanent magnet 7 are connected on the second current vortex plate 3, and under external action, tension and compression active pull rod 4 being capable of band
Dynamic pull rod cylinder 1 moves within a preset range, changes the distance between each current vortex plate and each magnet and generates current vortex energy consumption, simultaneously
The Loulun magnetism generated between second current vortex plate 3 and rubber magnet 9, hinders magnetic flux by the thickness of tension and compression rubber magnet 9
The change of amount, to consume energy.
As shown in Figure 1, shown in Figure 5,3 pieces of magnets are all made of cylindrical body identical with 8 internal diameter of shielding case, wherein 2 pieces forever
There are cylindrical holes 72 identical with 4 outer diameter of active pull rod at long 7 center of magnet.
As shown in Figure 1, Figure 2, Figure 4 shows, the center of 2 pieces of hold-down supports 5 there are with 1 outer diameter same diameter of pull rod cylinder
No. 1 cylindrical hole 51, passed through for pull rod cylinder 1.
As shown in Figure 1, shown in Figure 5, the rubber magnet 9 is fixed on the middle position of 8 inner wall of shielding case, and described 2 pieces forever
The magnetic pole of long magnet 7 is opposite with the magnetic pole of rubber magnet 9；It is axis with rubber magnet 9,2 pieces of 7 positions of permanent magnet are symmetrically distributed
The two sides of rubber magnet 9, clear distance of the rubber magnet 9 apart from permanent magnet 7 are equal to clear distance of the permanent magnet 7 apart from hold-down support 5
In addition the longitudinal length in the upper limit hole 11 of pull rod cylinder 1.
As shown in Fig. 1 ~ Fig. 4, it is characterised in that: the first current vortex plate 6 and the second electricity in the eddy current damper
Vortex board 3 is respectively provided with 2 pieces, is axial symmetry arrangement with rubber magnet 9, there are diameters and active at the center of the first current vortex plate 6
4 outer diameter of pull rod, 61,4 blocks of current vortex plates of identical No. 2 cylindrical holes are installed between 2 pieces of permanent magnet 7 and 1 piece rubber magnets 9.
As shown in Figure 1, shown in Figure 5, there are cards for the outer surface at 2 pieces of intermediate positions of permanent magnet 7 and 1 piece rubber magnet 9
Alloy hoop 2 is fixedly mounted in card slot 71 for slot 71, connect for permanent magnet 7, rubber magnet 9 with shielding case 8, described 2 pieces
7 center of permanent magnet is equipped with No. 2 cylindrical holes 61, passes through for active pull rod 4.
As shown in Fig. 1 ~ Fig. 5, the damping force that the novel eddy current damper of the stagewise of the utility model provides is divided into two-stage:
The first order drives the second current vortex plate 3 to move along the limit hole 11 on pull rod cylinder 1 by active pull rod 4, changes the second electric whirlpool
Flowing plate 3 is at a distance from the magnet of both sides and tension and compression rubber magnet 9 consumes energy；The second level, when the mobile displacement of active pull rod 4 is super
Out when the limiting displacement of limit hole 11, active pull rod 4 will drive the movement of pull rod cylinder by gag lever post 10 thereon, change its end
The first current vortex plate 6 in portion consumes energy at a distance from permanent magnet 7.
The foregoing is merely the most preferred embodiments of the utility model, are not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
It protects in range.
Claims (5)
1. a kind of stagewise eddy current damper, including shielding case (8), magnet, current vortex plate, hold-down support (5), driving are drawn
Bar, it is characterised in that: the shielding case (8) is using cylindric type；The magnet includes 2 pieces of permanent magnets (7) and 1 piece of rubber
Glue magnet (9), is both secured on the inner wall of shielding case (8)；The hold-down support (5) is equipped with 2 pieces, is connected to shielding case
(8) upper and lower ends；The current vortex plate is equipped with 2 piece of first current vortex plate (6) and 2 piece of second current vortex plate (3), and respectively
Interval is mounted between 2 pieces of permanent magnets (7) and 1 piece of rubber magnet (9)；The driving pull rod is equipped with symmetrical above and below
2 sets, every set includes active pull rod (4) and covers the pull rod cylinder (1) on active pull rod (4), passes through limit hole between the two
(11) and the relative motion of pre-determined distance can occur for gag lever post (10), and pull rod cylinder (1) passes through hold-down support (5) center connection the
On one current vortex plate (6), active pull rod (4) sequentially passes through pull rod cylinder (1), the first current vortex plate (6), permanent magnet (7), connection
On the second current vortex plate (3), under external action, tension and compression active pull rod (4) is able to drive pull rod cylinder (1) within a preset range
Movement changes the distance between each current vortex plate and each magnet and generates current vortex energy consumption, while the second current vortex plate (3) and rubber
The Loulun magnetism generated between magnet (9) hinders the change of magnetic flux by the thickness of tension and compression rubber magnet (9), to consume
Energy；The diameter of No. 1 cylindrical hole (51) is identical as pull rod cylinder (1) outer diameter, and the center of 2 pieces of hold-down supports (5) is all provided with No. 1 cylindrical hole
(51).
2. stagewise eddy current damper according to claim 1, it is characterised in that: 2 pieces of permanent magnets (7) and
1 piece of rubber magnet (9) is all made of cylindrical body identical with shielding case (8) internal diameter, and 2 pieces of permanent magnets (7) center is equipped with 2
Number cylindrical hole (61), No. 2 cylindrical holes (61) diameter are identical as active pull rod (4) outer diameter.
3. stagewise eddy current damper according to claim 1, it is characterised in that: the rubber magnet (9) is fixed
Magnetic pole in the middle position of shielding case (8) inner wall, 2 pieces of permanent magnets (7) is opposite with the magnetic pole of rubber magnet (9),
With rubber magnet (9) for axis, 2 pieces of permanent magnet (7) positions are at the two sides for being symmetrically mounted on rubber magnet (9), rubber magnet (9)
Clear distance apart from permanent magnet (7) is equal to the upper limit that the clear distance of permanent magnet (7) apart from hold-down support (5) adds pull rod cylinder (1)
The longitudinal length in position hole (11).
4. stagewise eddy current damper according to claim 1, it is characterised in that: the stagewise eddy-current damping
The first current vortex plate (6) and the second current vortex plate (3) in device are respectively provided with 2 pieces, are axial symmetry arrangement with rubber magnet (9), the
The center of one current vortex plate (6) is equipped with No. 2 cylindrical holes (61).
5. stagewise eddy current damper according to claim 1, it is characterised in that: 2 pieces of permanent magnets (7) and
There are card slot (71), card slot (71) is middle to be fixedly mounted alloy hoop (2) for the outer surface at the intermediate position of 1 piece of rubber magnet (9), is used for
Permanent magnet (7), rubber magnet (9) are connect with shielding case (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822113195.7U CN209370339U (en) | 2018-12-17 | 2018-12-17 | A kind of stagewise eddy current damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822113195.7U CN209370339U (en) | 2018-12-17 | 2018-12-17 | A kind of stagewise eddy current damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209370339U true CN209370339U (en) | 2019-09-10 |
Family
ID=67833006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822113195.7U Expired - Fee Related CN209370339U (en) | 2018-12-17 | 2018-12-17 | A kind of stagewise eddy current damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209370339U (en) |
-
2018
- 2018-12-17 CN CN201822113195.7U patent/CN209370339U/en not_active Expired - Fee Related
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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: 20190910 Termination date: 20211217 |