CN214404458U - Eddy current damping device - Google Patents
Eddy current damping device Download PDFInfo
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- CN214404458U CN214404458U CN202023311277.6U CN202023311277U CN214404458U CN 214404458 U CN214404458 U CN 214404458U CN 202023311277 U CN202023311277 U CN 202023311277U CN 214404458 U CN214404458 U CN 214404458U
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Abstract
The utility model discloses an eddy current damping device relates to attenuator technical field, and the utility model comprises a magnet steel back iron, a magnet steel, a conductor plate and a conductor back iron which are arranged in sequence, wherein the magnet steel is arranged on the magnet steel back iron, and the conductor plate is arranged on the conductor back iron; the magnetic steel back iron comprises a magnetic steel back iron plate and a plurality of installation iron plates installed on the magnetic steel back iron plate; each installation iron plate is provided with at least two magnetic steels which are uniformly distributed. The utility model discloses an eddy current damping device and installation method installation is quick, reliable, the loss is low.
Description
Technical Field
The utility model relates to a damping technical field, in particular to eddy current damping device.
Background
A typical plate eddy current damping device generally includes magnetic steel, magnetic steel back iron, conductor plate, and conductor back iron, and its structure and magnetic force diagram are shown in fig. 1. The plate type eddy current damping device has the characteristics of high energy consumption efficiency and non-contact of damping generation parts, is used as a damping generation element of a tuned mass damper, and is widely applied to the field of vibration damping engineering at present. In particular, the method has been widely applied to civil engineering, bridges and buildings. The plate type eddy current damping device is adopted by a damper weighing 1000 tons in Shanghai central buildings. Because the field installation space is limited or the transportation capacity is limited, the damper needs to be assembled after being transported to an engineering field in a part form, and the magnetic steel also needs to be assembled on the field as a part for generating damping. However, the magnetic steel is very brittle and easy to break after being impacted, the magnetic steel has strong suction force, hands are hurt by carelessness when the magnetic steel is installed on site, and meanwhile, the installation space, the installation environment and the convenience of tools on the engineering site are not as good as those of a workshop, so that the eddy current damping device which is easy to assemble quickly and reliably on the engineering site and does not reduce the damping effect is required.
SUMMERY OF THE UTILITY MODEL
The utility model provides an aim at overcome among the prior art problem that eddy current damping device's magnet steel is not convenient for in the on-the-spot installation of engineering, an eddy current damping device is provided, add magnet steel back iron board installation iron plate on the back iron plate of installation magnet steel, make magnet steel and installation iron plate form the installation unit, be convenient for install the unit in workshop or production line, transport to the construction engineering scene and install, can reduce the suction of magnet steel part installation magnet steel to magnet steel back iron plate in-process to the attenuator like this greatly, damage and the wounded problem of hand of magnet steel when construction engineering scene installation have been reduced, improve the installation effectiveness of construction engineering scene, shorten the time limit for a project, realize the quick, reliable installation of eddy current damping device, and do not reduce damping effect.
In order to realize the purpose of the utility model, the application provides the following technical scheme:
an eddy current damping device comprises a magnetic steel back iron, a magnetic steel, a conductor plate and a conductor back iron which are sequentially arranged, wherein the magnetic steel is arranged on the magnetic steel back iron, and the conductor plate is arranged on the conductor back iron; the magnetic steel back iron comprises a magnetic steel back iron plate and a plurality of installation iron plates installed on the magnetic steel back iron plate; each installation iron plate is provided with at least two magnetic steels which are uniformly distributed.
It should be noted that the length and width of the installation iron plates are smaller than those of the magnetic steel back iron plates, each magnetic steel back iron plate can be usually provided with a plurality of installation iron plates, and at least two uniformly distributed magnetic steels can be arranged on each installation iron plate; when two adjacent magnet steels are installed on the installation iron plate, the magnetic pole directions of the two magnet steels are opposite, namely the N pole of one magnet steel of the two adjacent magnet steels contacts with the installation iron plate, and the S pole of the other adjacent magnet steel contacts with the installation iron plate. Meanwhile, the installation iron plates are also uniformly distributed on the magnetic steel back iron plate, and the magnetic steel is also uniformly distributed on the magnetic steel back iron plate.
According to the technical scheme, the magnetic steel is installed on the installation iron plate, so that the magnetic steel and the installation iron plate form a complete installation unit, and then the installation unit is installed on the magnetic steel back iron plate through the installation iron plate, the problem that the magnetic steel needs to be assembled on site when being directly installed on the magnetic steel back iron plate is avoided, the installation unit formed by the magnetic steel and the installation iron plate can be preassembled in a workshop, and then the installation unit is transported and installed on site, so that the eddy current damping performance is not influenced, and the eddy current damping device can be installed quickly and conveniently.
Furthermore, a magnetic conductive partition plate is arranged between every two adjacent magnetic steels, so that the suction force between every two adjacent magnetic steels is reduced, and the suction force of the magnetic steels on objects possibly close to the magnetic steels, such as steel plates, can also be reduced.
Furthermore, the magnetic-conducting partition plate is a steel plate, so that the magnetic-conducting partition plate can play a role in magnetic conduction when the magnetic attraction force between two adjacent magnetic steels is reduced.
Furthermore, the height of the magnetic conductive partition plate is smaller than or equal to that of the magnetic steel, so that the conductor plate and the conductor back iron can freely move relative to the magnetic steel, and the installation of the conductor plate and the conductor back iron is not influenced.
Furthermore, the magnetic steel is fixed on the installation iron plate through at least one countersunk head screw, so that the magnetic steel is fixed on the installation iron plate to form a stable installation unit.
Further, the installation iron plate is fixed on the magnetic steel back iron plate through at least two screws.
Furthermore, the adjacent installation iron plates are in close contact with each other, so that the magnetic steels are arranged on the magnetic steel back iron plate in a matrix manner.
Further, the conductor plate is a copper plate or an aluminum plate, and has high electrical conductivity.
It should be noted that the conductor back iron, the installation iron plate and the magnetic steel back iron plate are all preferably made of high-permeability electrical pure iron.
Compared with the prior art, the utility model discloses a following beneficial effect has:
the application discloses an eddy current damping device, wherein a magnetic steel back iron for mounting magnetic steel is divided into two parts, the magnetic steel is arranged on a mounting iron plate, and the mounting iron plate is mounted on the magnetic steel back iron plate, so that the eddy current damping device is convenient to mount and transport; in addition, still be provided with a plurality of baffles that separate the magnet steel on the installation iron plate, reduce the magnetic attraction between two adjacent magnet steels to within the scope that the magnetic field restriction of magnet steel formed at the magnetic conduction baffle, reduce the magnetic resistance and the magnetic leakage of magnetic circuit, improve the magnetic flux density in the conductor board.
Drawings
FIG. 1 is a schematic diagram of the basic structure of an eddy current damping device in the prior art;
fig. 2 is a schematic structural view of an eddy current damping device according to some embodiments of the present invention;
fig. 3 is a schematic structural view of a mounting unit of the eddy current damping device according to some embodiments of the present invention;
FIG. 4 is a cross-sectional view of the mounting unit of the eddy current damping device in accordance with certain embodiments of the present invention;
fig. 5 is a plan view of the eddy current damping device after installation in accordance with some embodiments of the present invention;
the magnetic steel back iron plate comprises 1-magnetic steel, 11-through holes, 2-magnetic steel back iron, 21-magnetic steel back iron plate, 22-installation iron plate, 221-installation holes, 3-conductor plate, 4-conductor back iron, 5-magnetic conductive partition plate, 6-countersunk head screw and 7-screw.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.
In the prior art, referring to fig. 1, the basic structure of the eddy current damping device includes a magnetic steel 1, a magnetic steel back iron 2, a conductor plate 3, and a conductor plate 3 back iron, where the magnetic steel 1 is directly fixed on a large magnetic steel back iron 2. When the steel back iron is installed, the magnetic steel 1 is transported to an engineering site and then sequentially installed on the magnetic steel back iron 2. However, the installation environment of the engineering site is poor, and the magnetic steel 1 is fragile, so that the damage rate of the magnetic steel 1 in the installation process is high.
To the above technical problem, the utility model provides an eddy current damping device, refer to fig. 2, it specifically includes: the magnetic steel back iron 2, the magnetic steel 1, the conductor plate 3 and the conductor back iron 4 are sequentially arranged, the magnetic steel 1 is installed on the magnetic steel back iron 2, and the conductor plate 3 is installed on the conductor back iron 4; the magnetic steel back iron 2 comprises a magnetic steel back iron plate 21 and a plurality of mounting iron plates 22 mounted on the magnetic steel back iron plate 21; each installation iron plate 22 is provided with at least two magnetic steels 1 which are uniformly distributed.
The magnetic steel 1 is arranged on the installation iron plate 22, the installation iron plate 22 is installed on the magnetic steel back iron plate 21, the size of the installation iron plate 22 is far smaller than that of the magnetic steel back iron plate 21, and a plurality of installation iron plates 22 can be installed on the magnetic steel back iron plate 21; the eddy current damping device can be formed by firstly installing the magnetic steel 1 on the installation iron plate 22 to form an installation unit and then installing the installation unit on the magnetic steel back iron plate 21, so that the magnetic steel 1 can be fixed through the installation iron plate 22 to form the installation unit in a workshop or a production line, the installation procedures on a construction engineering site are reduced, the installation efficiency is improved, and the construction period is shortened. Meanwhile, structural support of the eddy current damping device is provided for the eddy current damping device to be transported and installed by adopting the installation unit in the transportation and installation processes, so that the damage of the magnetic steel 1 in the direct transportation and installation processes can be avoided.
It should be noted that the length and width of the installation iron plates 22 are smaller than those of the magnetic steel back iron plates 21, each magnetic steel back iron plate 21 can be usually provided with a plurality of installation iron plates 22, and at least two uniformly distributed magnetic steels 1 can be arranged on the installation iron plates 22; when two adjacent magnet steels 1 are installed on the installation iron plate 22, the magnetic pole directions of the two magnet steels 1 are opposite, that is, the N pole of one magnet steel 1 in the two adjacent magnet steels 1 contacts the installation iron plate 22, and the S pole of the other adjacent magnet steel 1 contacts the installation iron plate 22, that is, the polarity directions of the two adjacent magnet steels 1 are opposite. Meanwhile, the installation iron plates 22 are also uniformly distributed on the magnetic steel back iron plate 21, and the magnetic steel 1 is also uniformly distributed on the magnetic steel back iron plate 21.
In some embodiments, the magnetic conductive spacer 5 is a steel plate, so that it can play a role of magnetic conduction when reducing the magnetic attraction between two adjacent damping units.
In some embodiments, the height of the magnetic conductive partition plate 5 is less than or equal to the height of the magnetic steel 1, so that the conductor plate 3 and the conductor back iron 4 can freely move relative to the magnetic steel 1 without affecting the installation of the conductor plate 3 and the conductor back iron 4.
In some embodiments, at least one through hole 11 penetrating through the magnetic steel 1 is arranged in the middle of the magnetic steel 1, and a threaded hole is arranged on the mounting iron plate 22 corresponding to the through hole 11; each magnetic steel 1 is fixed on the installation iron plate 22 through at least one countersunk head screw 6, so that the magnetic steel 1 is fixed on the installation iron plate 22 to form a stable installation unit.
Preferably, one end of the through hole 11, which is far away from the installation iron plate 22, is set to be a frustum opening larger than the head of the countersunk screw 6, so that the countersunk screw 6 does not protrude out of the surface of the magnetic steel 1 after being installed, and the countersunk screw 6 is prevented from influencing the installation of the conductor plate 3 and the relative motion with the magnetic steel 1.
In some embodiments, at least two mounting holes 221 are symmetrically formed on the mounting iron plate 22; the magnetic steel back iron plate 21 is also provided with a threaded hole corresponding to the mounting hole 221, and the mounting iron plate 22 is fixed on the magnetic steel back iron plate 21 through at least two screws 7.
In some embodiments, adjacent installation iron plates 22 are in close contact with each other, so that the magnetic steels 1 are arranged on the magnetic steel back iron plate 21 in a matrix.
In some embodiments, the conductor plate 3 is a copper plate or an aluminum plate, having high electrical conductivity.
The eddy current damping device is installed by the following steps:
referring to fig. 3 and 4, the magnetic steel 1 is fixed on the installation iron plate 22 to form an installation unit; at least two magnetic steels 2 are uniformly arranged on each installation iron plate 22, and a space is reserved between every two adjacent magnetic steels 1;
transporting the installation unit, the magnetic steel back iron plate 21, the conductor plate 3 and the conductor back iron 4 which form the eddy current damping device to a construction engineering site, installing the magnetic steel back iron plate 21, and fixing the installation unit on the magnetic steel back iron plate 21; the conductor plate 3 and the conductor back iron 4 are installed, so that the conductor plate cuts the magnetic induction lines of the magnetic steel when moving relative to the installation unit.
The conductor plate 3 is arranged on one side close to the magnetic steel 1, and a gap is formed between the conductor plate and the magnetic steel 1, so that the conductor plate 3 can move relative to the magnetic steel 1 under the action of external force to cut the magnetic induction lines of the magnetic steel 1.
In the installation process, referring to fig. 5, a plurality of installation iron plates 22 are uniformly installed on each magnetic steel back iron plate 21; at least two magnetic steels 1 are uniformly arranged on the installation iron plate 22.
In the mounting process, the adjacent mounting iron plates 22 are closely attached to each other.
It should be noted that, in the use process, the mounting unit, the magnetic steel back iron plate 21, the conductor plate 3, and the conductor back iron 4 form a basic structure of the eddy current damping device, and each two magnetic steels 1 with opposite polarities form a permanent magnet pair as a magnetic field source. When the main structure vibrates, the conductor plate 3 and the permanent magnet pair move relatively to each other, so that the conductor plate 3 cuts magnetic lines of force to form an eddy current, and the eddy current interacts with the permanent magnet pair to generate a lorentz magnetic force for blocking the relative movement between the two. The mechanical energy of the movement of the conductor plate 3 is first converted into electrical energy in the conductor plate 3, then finally converted into thermal energy through the resistance of the conductor plate 3 and dissipated, producing a damping effect.
It should be noted that a gap is formed between the permanent magnet pair formed by the conductor plate 3 and the magnetic steel 1; the conductor plate 3 and the conductor back iron 4 are fixed on the main structure through a fixing device, and the mass unit of the tuned mass damper drives the conductor plate 3 to reciprocate relative to the fixing device through a spring or a piston; so that relative movement occurs between the conductor plate 3 and the magnetic steel 1. The fixing device can be a bearing rod and a bearing seat slidably mounted on the bearing rod, and the conductor back iron 4 is mounted on the bearing seat. The main structure can be a bridge, a high-rise building, a power transmission tower and other structures needing vibration reduction. Preferably, the mounting structure of the eddy current damping device when mounted on the main structure may refer to the mounting structure of the magnet and the conductor disclosed in patent CN 107974928B (patent name: universal horizontal tuned mass damper).
The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. An eddy current damping device is characterized by comprising a magnetic steel back iron, magnetic steel, a conductor plate and a conductor back iron which are sequentially arranged, wherein the magnetic steel is arranged on the magnetic steel back iron, and the conductor plate is arranged on the conductor back iron; the magnetic steel back iron comprises a magnetic steel back iron plate and a plurality of installation iron plates installed on the magnetic steel back iron plate; each installation iron plate is provided with at least two magnetic steels which are uniformly distributed.
2. The eddy current damping device as recited in claim 1, wherein a magnetically conductive spacer is disposed between two adjacent magnetic steels.
3. The eddy current damping device according to claim 2, wherein the magnetically conductive spacer is a steel plate.
4. The eddy current damping device as recited in claim 2, wherein the height of the magnetically conductive spacer is less than or equal to the height of the magnetic steel.
5. Eddy current damping device according to claim 1, characterised in that the magnetic steel is fixed to the mounting iron plate by means of at least one countersunk screw.
6. The eddy current damping device according to any one of claims 1 to 5, wherein the mounting iron plate is fixed to the magnetic steel back iron plate by at least two screws.
7. The eddy current damping device according to any one of claims 1 to 5, wherein the conductor plate is a copper plate or an aluminum plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023311277.6U CN214404458U (en) | 2020-12-30 | 2020-12-30 | Eddy current damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023311277.6U CN214404458U (en) | 2020-12-30 | 2020-12-30 | Eddy current damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404458U true CN214404458U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023311277.6U Active CN214404458U (en) | 2020-12-30 | 2020-12-30 | Eddy current damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404458U (en) |
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2020
- 2020-12-30 CN CN202023311277.6U patent/CN214404458U/en active Active
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