CN204676425U - The eddy current damper that a kind of suspension cable out-of-plane vibration controls - Google Patents
The eddy current damper that a kind of suspension cable out-of-plane vibration controls Download PDFInfo
- Publication number
- CN204676425U CN204676425U CN201520329698.1U CN201520329698U CN204676425U CN 204676425 U CN204676425 U CN 204676425U CN 201520329698 U CN201520329698 U CN 201520329698U CN 204676425 U CN204676425 U CN 204676425U
- Authority
- CN
- China
- Prior art keywords
- support
- eddy current
- damping
- shaft
- current damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 10
- 238000013016 damping Methods 0.000 claims abstract description 64
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 238000006073 displacement reaction Methods 0.000 claims abstract description 37
- 239000004020 conductor Substances 0.000 claims description 30
- 208000032369 Primary transmission Diseases 0.000 claims description 9
- 208000032370 Secondary transmission Diseases 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses the eddy current damper that a kind of suspension cable out-of-plane vibration controls, relate to Inclined Cable Vibration control technology field.This damper comprises connecting rod, base, face outer displacement transfer device and damping generating device, and face outer displacement transfer device is fixed on the lower end of connecting rod, and damping generating device is located at the both sides of face outer displacement transfer device and is fixedly connected with base; It is transmission device and two is transmission device that face outer displacement transfer device comprises one, one is that transmission device comprises owner's moving gear and to be engaged in one below owner's moving gear be driven gear, two is that transmission device comprises two owner's moving gears and to be engaged in two above two owner's moving gears be driven gear, two is that driven gear inside is fixed with damping shaft, two owner's moving gear inside are fixed with power transmission shaft, and face outer displacement transfer device is connected with damping generating device by damping shaft, power transmission shaft.The utility model damper not only can effectively strengthen effectiveness in vibration suppression outside face, and good endurance.
Description
Technical Field
The utility model relates to a stay cable vibration control technical field, specifically electric eddy current damper of stay cable off-plate vibration control.
Background
The cable-stayed bridge structure is one of the first-choice bridge types of a large-span bridge, and the cable-stayed cables are used as main stress members of the cable-stayed bridge and have obvious importance. The stay cable has a large slenderness ratio and small initial damping, and is easy to vibrate under the action of external wind load, so that the fatigue damage of the stay cable can be caused in the long term. When the incoming wind flows along the transverse direction, the stay cables mainly vibrate in the plane, and when the incoming wind flows along the transverse direction, the stay cables mainly vibrate out of the plane. From engineering practice, in-plane vibration of the stay cable is frequently generated in the cable-stayed bridge of the early inland river, and the vibration control measure is mainly in-plane control; with the construction of the sea-crossing bridge, the out-of-plane vibration is generated while the in-plane vibration of the stay cables is found on the multi-seat sea-crossing bridge, and the out-of-plane vibration is not effectively inhibited after the general damper is installed.
At present, in the vibration control practice of the damper of the stay cable, out-of-plane vibration control is not considered, or in-plane control is taken as a main control and out-of-plane control is taken as an auxiliary control, and the out-of-plane control effect is not ideal. For example, in the patent of "external damping vibration absorber for stay cables" published under CN203487458U, each stay cable is provided with 2 dampers, each of which has a certain included angle, so that the external damping vibration absorber can control the in-plane vibration of the stay cable and has a certain control effect on the out-of-plane vibration of the stay cable. However, the damper has the following disadvantages: the out-of-plane rigidity of the damper support is weak, and along with the improvement of the installation height of the damper, when the stay cable vibrates out of the plane, the displacement loss of the damper is large due to bending deformation at the top of the support for fixing the damper, so that the vibration reduction effect is weakened; and the adopted oil damper has high requirement on processing precision, the oil leakage problem is easy to occur, and the damping coefficient is not easy to adjust. Also, for example, in the stay cable vibration-proof device with a damper disclosed in CN203238543U, a steering mechanism for transmitting vibration response is added to the conventional viscous shear-type damper, so that the installation height is ensured and the collision between the damper main body and the wind barrier is avoided. However, the damper has the following disadvantages: the temperature stability of the high-molecular viscous material is poor, the damping coefficient changes greatly along with the change of temperature, and the problem of material leakage can also occur; meanwhile, the rigidity of the out-of-plane displacement transmission system is weaker and the length of the cantilever is large, so that the loss of out-of-plane displacement is more, and the out-of-plane vibration reduction effect is influenced.
Therefore, how to reduce the displacement loss, enhance the out-of-plane vibration reduction effect and improve the durability of the damper is an urgent technical problem to be solved in the study of stay cable vibration control.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide an electric eddy current damper of suspension cable off-plate vibration control, it not only can effectively strengthen off-plate damping effect, and the durability is good moreover.
In order to achieve the above purpose, the utility model adopts the technical proposal that: the eddy current damper comprises a connecting rod and a base, wherein the connecting rod is used for connecting a stay cable, the base is used for being fixed with a bridge floor, an out-of-plane displacement transmission device is arranged at the lower end of the connecting rod, and damping generation devices are arranged on two sides of the out-of-plane displacement transmission device;
the out-of-plane displacement transmission device comprises two groups of primary transmission devices which are oppositely arranged and a secondary transmission device which is arranged between the two groups of primary transmission devices, each group of primary transmission devices comprises a primary driving gear and a primary driven gear, and the primary driving gear is fixedly arranged at the lower end of the connecting rod and is meshed with the primary driven gear; the secondary transmission device comprises a secondary driving gear and a secondary driven gear meshed above the secondary driving gear, a damping shaft is fixed inside the secondary driven gear, and a transmission shaft is fixed inside the secondary driving gear;
the damping generation device comprises a support and conductor plates symmetrically arranged on two sides of the support, the upper end of the support is movably connected with the connecting rod through a lever shaft, the lower end of the support is fixed on the base, a plurality of permanent magnets are embedded in the support, and the permanent magnets are arranged corresponding to the two conductor plates;
the damping shaft sequentially penetrates through the primary driving gear, the conductor disc, the support and the other conductor disc from the secondary driven gear to the outside, the two conductor discs are fixedly connected with the damping shaft, and the support is movably connected with the damping shaft; the transmission shaft penetrates through a series driven gear and a support from two series driving gears outwards in sequence, the series driven gear is fixedly connected with the transmission shaft, and the support is movably connected with the transmission shaft.
On the basis of the technical scheme, the radius of the series of driving gears is larger than that of the series of driven gears; the radius of the two series of driving gears is larger than that of the two series of driven gears.
On the basis of the technical scheme, the through hole for the damping shaft to pass through in the driving gear is in a waist circle shape.
On the basis of the technical scheme, the eddy current damper further comprises a cable clamp, and the cable clamp is movably connected with the upper end of the connecting rod.
On the basis of the technical scheme, the lever shaft and the support, the damping shaft and the support and the transmission shaft and the support are connected through bearings.
On the basis of the technical scheme, a plurality of preformed holes are formed in the support, the edges of the preformed holes, which are adjacent to the conductor disc, are arranged in the circumferential direction, and a permanent magnet is embedded in each preformed hole.
On the basis of the technical scheme, the permanent magnets are arranged according to the rule that the magnetic poles are changed alternately.
On the basis of the technical scheme, the surface of the permanent magnet is flush with the surface of the bracket.
On the basis of the technical scheme, the conductor disc is made of aluminum alloy; the permanent magnet is made of Ru iron boron permanent magnet.
On the basis of the technical scheme, 6 permanent magnets are embedded in each support, the thickness of each permanent magnet is 10mm, the diameter of each permanent magnet is 30mm, and the magnetic induction intensity is 3000 gauss.
The beneficial effects of the utility model reside in that:
1. the utility model discloses in, the off-plate displacement transmission device comprises a transmission and two transmissions, has formed the displacement transmission of two systems, can be with the effectual rotary motion who turns into the conductor dish in the hoop alternating magnetic field that the permanent magnet formed of the off-plate vibration displacement of suspension cable, produces the off-plate vibration energy of eddy current damping with dissipation suspension cable from this, reaches the purpose of effective reinforcing off-plate damping effect.
2. The utility model discloses in, because the displacement transmission of two systems that transmission and two systems formed has the amplification effect, can make the displacement that transmits to damping production device enlarge, make the displacement that damping production device located be greater than the off-plate vibration displacement of suspension cable, solved the problem that damping consumed the displacement undersize for the damping power consumption is more abundant.
3. The utility model discloses in, the upper end of support is connected with the connecting rod through the lever axle, and when the stay cable took place the off-plate vibration, the connecting rod drove one and is tied driving gear and use the lever axle to rotate as the center, and the setting of this lever axle has reduced the free cantilever length of connecting rod, has reduced because the displacement loss problem that the bending deformation of connecting rod arouses.
4. The utility model discloses in, the through-hole that supplies the damping axle to pass in the driving gear of one system is oval shape, and when this oval shape's through-hole made the connecting rod drive driving gear of one system rotate, can not take place to interfere with the damping axle to the off-plate damping effect has been guaranteed.
5. The utility model discloses in, every permanent magnet can provide alternating magnetic field for two conductor dishes, and not only the damping is effectual, simple structure, low in production cost moreover.
6. In the utility model, the damper adopts the electric eddy current damping vibration attenuation mode, so that the problem of liquid leakage does not exist, the temperature stability and the safety are good, and the damper is suitable for being used in the actual bridge engineering; and the damper is mainly made of metal materials, the durability of the damper can be as long as the service life of the main bridge structure, and the damper is superior to silicon oil and high-molecular adhesive materials made of non-metal materials.
Drawings
Fig. 1 is a schematic structural diagram of an eddy current damper according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 with the cable clamp and the stay cable removed;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 with the cable clamp and the stay cable removed;
FIG. 4 is a schematic view of the arrangement of permanent magnets;
FIG. 5 is a schematic diagram of displacement amplification of two series displacement transmission.
Reference numerals:
1-a connecting rod; 2-a base; 3-out-of-plane displacement transmission device, 3 a-primary driving gear, 3 b-primary driven gear, 3 c-secondary driving gear and 3 d-secondary driven gear; 4-damping generating device, 4 a-bracket, 4 b-conductor disc, 4 c-permanent magnet; 5-a lever shaft; 6-a damping shaft; 7-a transmission shaft; 8-a through hole; 9-preparing holes; 10-a cable clamp; 11-stay cable.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the embodiment of the utility model provides an oblique cable off-plate vibration control's eddy current damper, including connecting rod 1, base 2, off-plate displacement transmission device 3, damping production device 4 and cable clamp 10, cable clamp 10 passes through the upper end swing joint of bearing and connecting rod 1, and connecting rod 1 is connected with oblique cable 11 through this cable clamp 10, base 2 is fixed in the bridge floor, the lower extreme of connecting rod 1 is located to off-plate displacement transmission device 3, the damping produces device 4 and locates the both sides of off-plate displacement transmission device 3.
Referring to fig. 1 to 3, the out-of-plane displacement transmission device 3 includes two sets of primary transmission devices disposed opposite to each other and two sets of secondary transmission devices disposed between the two sets of primary transmission devices, each set of primary transmission devices includes a primary driving gear 3a and a primary driven gear 3b, and the primary driving gear 3a is fixedly disposed at the lower end of the connecting rod 1 and is engaged with the primary driven gear 3 b; the secondary transmission device comprises a secondary driving gear 3c and a secondary driven gear 3d meshed above the secondary driving gear 3c, a damping shaft 6 is fixed inside the secondary driven gear 3d, and a transmission shaft 7 is fixed inside the secondary driving gear 3 c.
Referring to fig. 1 and 4, the damping generating device 4 includes a bracket 4a and conductor plates 4b symmetrically disposed on two sides of the bracket 4a, an upper end of the bracket 4a is movably connected to the connecting rod 1 through a lever shaft 5, a lower end of the bracket 4a is fixed to the base 2, a plurality of permanent magnets 4c are embedded in the bracket 4a, and the permanent magnets 4c are disposed corresponding to the two conductor plates 4b and used for providing an alternating magnetic field for the two conductor plates 4 b. Wherein, for the convenience of installation permanent magnet 4c to make every permanent magnet 4c can provide alternating magnetic field for two conductor dishes 4b, seted up a plurality of preformed holes 9 on support 4a, this preformed hole 9 is close to the edge of conductor dish 4b and is the ring direction setting, every preformed hole 9 is embedded to have a permanent magnet 4c, the permanent magnet 4c of embedding sets up according to magnetic pole alternation's rule, and permanent magnet 4 c's the surface parallel and level with support 4 a's surface. In this embodiment, the material of the conductor disc 4b is preferably an aluminum alloy, and the material of the permanent magnet 4c is preferably a ru iron boron permanent magnet; and 6 permanent magnets 4c are embedded in each bracket 4, the thickness of each permanent magnet 4c is 10mm, the diameter is 30mm, and the magnetic induction intensity is 3000 gauss.
Referring to fig. 1, the damping shaft 6 passes through a first series of driving gears 3a, a first conductor disc 4b, a bracket 4a and another conductor disc 4b from a second series of driven gears 3d outwards in sequence, the two conductor discs 4b are fixedly connected with the damping shaft 6, and the bracket 4a is movably connected with the damping shaft 6; the transmission shaft 7 sequentially penetrates through the first driven gear 3b and the support 4a from the second driving gear 3c outwards, the first driven gear 3b is fixedly connected with the transmission shaft 7, and the support 4a is movably connected with the transmission shaft 7. In this embodiment, the through hole 8 for the damping shaft 6 to pass through in the primary driving gear 3a is a waist-shaped through hole 8, and the waist-shaped through hole 8 can prevent the primary driving gear 3a from interfering with the damping shaft 6 during rotation. In addition, the lever shaft 5, the damping shaft 6 and the transmission shaft 7 are movably connected with the bracket 4a through bearings; and the two conductor discs 4b and the damping shaft 6, and the one-series driven gear 3b and the transmission shaft 7 are fixedly connected through flat keys.
Referring to fig. 5, the displacement amplification principle of the two-series displacement transmission is as follows: in the figure, L0The distance from the center of the stay cable 11 to the center of the lever shaft 5 (i.e. the free cantilever length of the connecting rod), R1Is a radius, R 'of primary drive gear 3 a'1Is a radius of a series of driven gears 3b, R2Is a radius, R 'of the secondary drive gear 3 c'2The radius of the secondary driven gear 3 d. When the out-of-plane vibration velocity of the stay cable 11 is v0Angular velocity ω of the conductor plate 4b transmitted to the damping shaft 62Comprises the following steps:
wherein,is the amplification factor of a series of transmission devices,for a factor of amplification, v, of the two-train transmission0/L0Is the angular velocity at which the stay cable 11 rotates about the lever shaft 5. From the above formula, the rotation angular velocity ω of the conductor disc 4b is obtained by the transmission of the two-train transmission device2Amplifying to n of the original1·n2Multiple, when n1·n2When the vibration displacement is larger than 1, the amplification of the out-of-plane vibration displacement is realized, and the problem that the out-of-plane vibration displacement of the traditional stay cable 11 is reduced when being transmitted to the damping generating device 4 is solved. Therefore, the effect of amplifying the out-of-plane vibration displacement can be achieved by only ensuring that the radius of the primary driving gear 3a is larger than that of the primary driven gear 3b and the radius of the secondary driving gear 3c is larger than that of the secondary driven gear 3 d.
In addition, the rotational damping coefficient of the eddy current damper is Cr(CrIndependent of the vibration response of the stay cables 11), the damping torque T generated on the damping shaft 6 by the eddy current is generated2Comprises the following steps:
T2＝Cr·ω2
linear damping force F transmitted to stay cable 110Comprises the following steps:
the equivalent linear damping coefficient C at the stay cable 110
The equivalent linear damping coefficient is directly proportional to the square of the gear amplification factor and is proportional to the distance L from the central line of the stay cable 11 to the lever shaft 60Is inversely proportional to the square of (i.e. the free cantilever length L of the connecting rod)0The smaller the better.
However, the out-of-plane vibration damping effect of the common oil dampers and VSD dampers which are distributed at an angle is greatly influenced by the transverse deformation of the supporting leg, the upper end of the supporting leg is connected with the dampers, the lower end of the supporting leg is fixed on the bridge floor, the stress type of the supporting leg is a cantilever beam, the length L of the cantilever beam is increased along with the increase of the installation height, so that the transverse deformation of the supporting leg is too large, and the out-of-plane vibration control effect is seriously reduced. In the damper, the lever shaft is arranged to change the cantilever length of the connecting rod to L0In general for a bridge, L may be02/3. L, according to the formula of deflection of the cantilever beamTherefore, the maximum deflection is in direct proportion to the 3 rd power of the length of the cantilever, and the maximum deflection of the damper is 8/27 of the deformation of the conventional damper on the premise of using the same material and section, so that the vibration reduction effect of the damper is effectively ensured.
The utility model discloses stay cable off-plate vibration control's eddy current damper's damping production method is as follows: connecting the connecting rod 1 to a stay cable 11, and fixing the base 2 to the bridge floor; when the external vibration takes place for suspension cable 11, connecting rod 1 drives a driving gear 3a and uses lever shaft 5 to rotate as the center, makes a driving gear 3a and a driven gear 3b take place the meshing rotation to drive transmission shaft 7 and rotate, transmission shaft 7 drives two driving gear 3c and rotates, makes two driving gear 3c and two driven gear 3d take place the meshing rotation, thereby drives damping shaft 6 and rotates, damping shaft 6 drives conductor dish 4b and takes place to rotate in the hoop alternating magnetic field that permanent magnet 4c formed, produces the external vibration energy of electric eddy current damping in order to dissipate suspension cable 11 from this.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (10)
1. The utility model provides an electric eddy current damper of suspension cable off-plate vibration control, is used for base (2) fixed with the bridge floor including connecting rod (1) that are used for connecting suspension cable (11), its characterized in that: the lower end of the connecting rod (1) is provided with an out-of-plane displacement transmission device (3), and two sides of the out-of-plane displacement transmission device (3) are provided with damping generation devices (4);
the out-of-plane displacement transmission device (3) comprises two groups of primary transmission devices which are oppositely arranged and two groups of secondary transmission devices which are arranged between the two groups of primary transmission devices, each group of primary transmission devices comprises a primary driving gear (3a) and a primary driven gear (3b), and the primary driving gear (3a) is fixedly arranged at the lower end of the connecting rod (1) and is meshed with the primary driven gear (3 b);
the secondary transmission device comprises a secondary driving gear (3c) and a secondary driven gear (3d) meshed above the secondary driving gear (3c), a damping shaft (6) is fixed inside the secondary driven gear (3d), and a transmission shaft (7) is fixed inside the secondary driving gear (3 c);
the damping generation device (4) comprises a support (4a) and conductor discs (4b) symmetrically arranged on two sides of the support (4a), the upper end of the support (4a) is movably connected with the connecting rod (1) through a lever shaft (5), the lower end of the support is fixed on the base (2), a plurality of permanent magnets (4c) are embedded in the support (4a), and the permanent magnets (4c) are arranged corresponding to the two conductor discs (4 b);
the damping shaft (6) sequentially penetrates through the first series of driving gears (3a), one conductor disc (4b), a support (4a) and the other conductor disc (4b) from the second series of driven gears (3d) outwards, the two conductor discs (4b) are fixedly connected with the damping shaft (6), and the support (4a) is movably connected with the damping shaft (6); the transmission shaft (7) sequentially penetrates through a first driven gear (3b) and a support (4a) from a second driving gear (3c) outwards, the first driven gear (3b) is fixedly connected with the transmission shaft (7), and the support (4a) is movably connected with the transmission shaft (7).
2. The stay cable out-of-plane vibration controlled eddy current damper according to claim 1, wherein: the radius of the series of driving gears (3a) is larger than that of the series of driven gears (3 b); the radius of the two series driving gears (3c) is larger than that of the two series driven gears (3 d).
3. The stay cable out-of-plane vibration controlled eddy current damper according to claim 1, wherein: the through hole (8) for the damping shaft (6) to pass through in the primary drive gear (3a) is waist-round.
4. The stay cable out-of-plane vibration controlled eddy current damper according to claim 1, wherein: the eddy current damper further comprises a cable clamp (10), and the cable clamp (10) is movably connected with the upper end of the connecting rod (1).
5. The stay cable out-of-plane vibration controlled eddy current damper according to claim 1, wherein: the lever shaft (5) is connected with the support (4a), the damping shaft (6) is connected with the support (4a), and the transmission shaft (7) is connected with the support (4a) through bearings.
6. The stay cable out-of-plane vibration controlled eddy current damper according to claim 1, wherein: a plurality of preformed holes (9) have been seted up in support (4a), the edge that preformed hole (9) are close to conductor dish (4b) just is the hoop setting, and every preformed hole (9) is embedded to have one permanent magnet (4 c).
7. The stay cable out-of-plane vibration controlled eddy current damper according to claim 1, wherein: the permanent magnets (4c) are arranged according to a rule that magnetic poles are alternately changed.
8. The stay cable out-of-plane vibration controlled eddy current damper according to claim 1, wherein: the surface of the permanent magnet (4c) is flush with the surface of the bracket (4).
9. The stay cable out-of-plane vibration controlled eddy current damper as claimed in any one of claims 1 to 8, wherein: the conductor disc (4b) is made of aluminum alloy; the permanent magnet (4c) is made of a Ru iron boron permanent magnet.
10. The stay cable out-of-plane vibration controlled eddy current damper as claimed in any one of claims 1 to 8, wherein: 6 permanent magnets (4c) are embedded in each bracket (4), the thickness of each permanent magnet (4c) is 10mm, the diameter is 30mm, and the magnetic induction intensity is 3000 gauss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329698.1U CN204676425U (en) | 2015-05-21 | 2015-05-21 | The eddy current damper that a kind of suspension cable out-of-plane vibration controls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329698.1U CN204676425U (en) | 2015-05-21 | 2015-05-21 | The eddy current damper that a kind of suspension cable out-of-plane vibration controls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204676425U true CN204676425U (en) | 2015-09-30 |
Family
ID=54176130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520329698.1U Withdrawn - After Issue CN204676425U (en) | 2015-05-21 | 2015-05-21 | The eddy current damper that a kind of suspension cable out-of-plane vibration controls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204676425U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894970A (en) * | 2015-05-21 | 2015-09-09 | 中国铁路总公司 | Eddy current damper for stay cable out-of-surface vibration control and damping generation method |
| CN106989129A (en) * | 2017-05-09 | 2017-07-28 | 大连理工大学 | A kind of big displacement eddy current damper |
| CN107061598A (en) * | 2017-04-28 | 2017-08-18 | 河海大学 | It is applicable adjustable, the combined suspension cable eddy current damper used of any installation site |
| CN107574754A (en) * | 2017-10-11 | 2018-01-12 | 中铁第四勘察设计院集团有限公司 | A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations |
| CN108252200A (en) * | 2018-01-31 | 2018-07-06 | 华中科技大学 | A kind of suspension cable permanent-magnet type eddy current damper of variable power |
| CN112227180A (en) * | 2020-09-30 | 2021-01-15 | 中铁大桥局集团有限公司 | Stay cable combined vibration reduction device and method |
-
2015
- 2015-05-21 CN CN201520329698.1U patent/CN204676425U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894970A (en) * | 2015-05-21 | 2015-09-09 | 中国铁路总公司 | Eddy current damper for stay cable out-of-surface vibration control and damping generation method |
| CN107061598A (en) * | 2017-04-28 | 2017-08-18 | 河海大学 | It is applicable adjustable, the combined suspension cable eddy current damper used of any installation site |
| CN106989129A (en) * | 2017-05-09 | 2017-07-28 | 大连理工大学 | A kind of big displacement eddy current damper |
| CN107574754A (en) * | 2017-10-11 | 2018-01-12 | 中铁第四勘察设计院集团有限公司 | A kind of pendulum-type lever mass damper for controlling suspension cable space oscillations |
| CN108252200A (en) * | 2018-01-31 | 2018-07-06 | 华中科技大学 | A kind of suspension cable permanent-magnet type eddy current damper of variable power |
| CN112227180A (en) * | 2020-09-30 | 2021-01-15 | 中铁大桥局集团有限公司 | Stay cable combined vibration reduction device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204676425U (en) | The eddy current damper that a kind of suspension cable out-of-plane vibration controls | |
| CN104894970B (en) | The eddy current damper of a kind of suspension cable out-of-plane vibration control and damping generation method | |
| EP3196505B1 (en) | Outer cup rotary axial eddy current damper | |
| EP2681463B1 (en) | Structural damping system and method | |
| CN112219043B (en) | Damping universal suspension for pendulum absorber | |
| CN109027090B (en) | Ternary vibration damper with parallel damping and inertial unit, design and assembly method | |
| CN101832358B (en) | Peg-top vibration-reducing damper for controlling structure to vibrate in multiple dimensions and manufacturing method thereof | |
| CN103775549B (en) | Eccentric eddy current tuned mass damping device | |
| CN210344129U (en) | Bridge eddy current damper | |
| CN103572857A (en) | Electromagnetic tuned mass damper and design method thereof | |
| JP2016506221A (en) | Magnetic screw propulsion system for elevators | |
| CN108869617A (en) | A kind of self-powered magnetic rheological vibration damper | |
| CN209509214U (en) | Rotary inertia active control device with damping liquid box | |
| CN104500635A (en) | Vibration reduction device of high-speed rotating shaft system | |
| WO2020155642A1 (en) | Active composite variable-damping rotation control apparatus | |
| CN102409604B (en) | Device for damping and protecting bridge structural suspender | |
| CN209054005U (en) | A kind of used matter damper of non-linear current vortex | |
| CN107762229A (en) | The current vortex dissipative damping device of controlled level and torsional direction | |
| CN103556748A (en) | Method and device for improving shock resistance of building or bridge | |
| CN105138798A (en) | Pendulum eddy current tuned mass damper and method for achieving structure vibration reduction | |
| CN201874738U (en) | Swing type sea wave power generating device | |
| CN109163046B (en) | Ternary vibration damper with parallel inertial mass and spring units, design and assembly method | |
| CN105696720B (en) | A kind of structure electromagnetism variable damping master passively controls compound tuning control system | |
| CN109599820B (en) | Anti-galloping-twisting turning eddy current mass damper and optimization method | |
| CN110578297A (en) | eddy current damper suitable for any vibration direction of inhaul cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150930 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |