CN112796558A - Interlayer shearing amplification type eddy current damper - Google Patents
Interlayer shearing amplification type eddy current damper Download PDFInfo
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- CN112796558A CN112796558A CN202110135691.6A CN202110135691A CN112796558A CN 112796558 A CN112796558 A CN 112796558A CN 202110135691 A CN202110135691 A CN 202110135691A CN 112796558 A CN112796558 A CN 112796558A
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- eddy current
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- 239000011229 interlayer Substances 0.000 title claims abstract description 20
- 238000010008 shearing Methods 0.000 title claims abstract description 16
- 230000003321 amplification Effects 0.000 title claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
- 239000010959 steel Substances 0.000 claims abstract description 79
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052802 copper Inorganic materials 0.000 claims abstract description 36
- 239000010949 copper Substances 0.000 claims abstract description 36
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 230000000452 restraining effect Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 6
- 230000006698 induction Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention belongs to the technical field of structural vibration control, and provides an interlayer shearing amplification type eddy current damper which can effectively control the vibration of a high-rise building under the action of an earthquake, reduce the interlayer deformation of a structure and ensure the safe operation of the building structure; the eddy current technology is adopted for energy consumption, the lever principle is utilized to adjust the force arm ratio to amplify the vibration displacement, and the energy consumption efficiency is greatly improved; the damping parameters can be adjusted by adjusting the distance ratio from the screw to the steel bar and the copper sheet, the magnetic field intensity of the permanent magnet, the thickness of the copper sheet and the distance from the copper sheet to the permanent magnet; the permanent magnet is adopted to provide a continuous magnetic field source, external energy sources are not needed, and a long-term stable vibration reduction effect can be generated; the magnetic conduction material is adopted, so that magnetic leakage of a magnetic circuit can be effectively avoided, the eddy current damping efficiency is improved, and the influence on various surrounding components is avoided; reasonable in design, simple structure, the installation of being convenient for are maintained.
Description
Technical Field
The invention belongs to the technical field of structural vibration control, and particularly relates to an interlayer shearing amplification type eddy current damper.
Background
The high-rise building structure has the characteristics of large height, strong flexibility and the like, and is sensitive to earthquake load reaction. The building structure is easy to generate violent shaking and even collapse under the action of earthquake load. Therefore, it is necessary to control the vibration of a high-rise building structure under the action of an earthquake to reduce the interlayer deformation of the structure, ensure the safe operation of the building structure and create a comfortable production and living environment.
The eddy current damper is a novel non-contact damping device, has wide application prospect in the field of vibration control, can provide multidirectional damping, has the advantages of non-contact, no friction, no abrasion, long service life, no pollution, capability of providing multidirectional damping and the like, and has wide application prospect in the field of vibration control. However, the conventional eddy current damper has a problem of low energy consumption efficiency, and has very limited energy consumption and vibration damping effects in the case of a small vibration amplitude, and it is difficult to achieve a predetermined vibration damping target. The invention provides an interlayer shearing amplification type eddy current damper based on the principle of eddy current effect energy consumption.
Disclosure of Invention
The invention provides an interlayer shearing amplification type damper by combining an eddy current damping technology and other passive vibration reduction technologies.
The technical scheme of the invention is as follows:
an interlayer shearing amplification type damper comprises a horizontal steel plate 1, a screw a, a steel bar 3, a vertical steel plate 4, a vertical rod 5, a screw b, a shell 7, a chuck 8, a screw c, a magnet 10, a copper sheet 11, a square steel plate 12 and an inclined rod 13;
the two vertical steel plates 4 are welded below the horizontal steel plate 1, a steel bar sliding groove is formed in the middle of each vertical steel plate 1, the size of the steel bar sliding groove is slightly larger than the diameter of a steel bar, the steel bar 3 is clamped in a groove of each vertical steel plate 1, and the horizontal steel plate 1 is connected with the horizontal beam through a screw a;
the vertical rod 5 is welded with the steel bar 3, the lower end of the vertical rod 5 is welded with the chuck 8, and the lower end of the chuck 8 is connected with the copper sheet 11 through a screw c;
the square steel plate 12 is welded with the upper end of the diagonal rod 13, and the square steel plate 12 is connected with the vertical rod 5 through a screw b;
the lower end of the diagonal rod 13 is connected with the structural column;
two magnets 10 slightly smaller than the copper sheets 11 are arranged on the inner sides of the two metal shells 7, the lower ends of the shells 7 are connected with the structural columns, and the upper ends of the shells are connected with the square steel plates 12 and the vertical rods 5 through screws b.
The working principle of the invention is as follows:
(1) when the structure generates horizontal vibration, the beam horizontally vibrates to drive the steel bar to horizontally vibrate, and according to the lever principle, the small-amplitude vibration of the steel bar causes the large-amplitude vibration of the copper sheet;
(2) the copper sheet moves in the magnetic field to cut the magnetic induction lines, induction currents are generated in the copper sheet according to the lenz law, the magnetic field force borne on the induction currents hinders the movement of the copper sheet, namely the mechanical energy of the copper sheet is converted into heat energy, and therefore vibration of the structure is reduced.
The invention has the beneficial effects that:
(1) according to the interlayer shearing amplification type eddy current damper, horizontal displacement of a beam is converted into rotation of a fan-shaped copper sheet, eddy current is generated for energy consumption, the horizontal displacement is amplified by using a lever, the copper sheet with a larger amplitude can be rotated by smaller horizontal displacement, and the energy consumption efficiency is greatly improved;
(2) the interlayer shearing amplification type eddy current damper can conveniently adjust damping parameters. The damping parameters can be adjusted by adjusting the lever proportion, the magnetic field intensity of the permanent magnet, the thickness of the copper sheet and the distance from the copper sheet to the permanent magnet;
(3) according to the interlayer shearing amplification type eddy current damper, the permanent magnet is adopted to provide a continuous magnetic field source, external energy is not needed, and the device can generate a long-term stable vibration reduction effect;
(4) according to the interlayer shearing amplification type eddy current damper, the shell is made of the magnetic conductive material, magnetic leakage of a magnetic circuit can be effectively avoided, the eddy current damping efficiency is improved, and influences on surrounding components are avoided;
(5) the interlayer shearing amplification type eddy current damper is reasonable in design, attractive in appearance and very convenient to connect with a main structure.
Drawings
FIG. 1 is an elevational view of an interlayer shear amplifying eddy current damper according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of an interlayer shear amplifying eddy current damper according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view B-B of an interlayer shear amplifying eddy current damper according to an embodiment of the present invention; in the figure, 1 horizontal steel plate; 2, a screw a; 3, steel bars; 4, vertical steel plates; 5, erecting a rod; 6, a screw b; 7 outer layer
A shell; 8, clamping heads; 9 a screw c; 10 a magnet; 11 a copper sheet; 12 square steel plates; 13 diagonal rod.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of an interlayer shearing amplification type eddy current damper according to the present invention includes a horizontal steel plate 1, a screw a, a steel rod 3, a vertical steel plate 4, a vertical rod 5, a screw b, a housing 7, a chuck 8, a screw c, a magnet 10, a copper sheet 11, a square steel plate 12, and a diagonal rod 13.
In the embodiment, two vertical steel plates 4 are welded below a horizontal steel plate 1, a steel bar chute is arranged in the middle of each vertical steel plate 4, the size of each steel bar chute is slightly wider than the diameter of each steel bar, a steel bar 3 is clamped in a groove of each vertical steel plate 4, and the horizontal steel plate 1 is connected with a horizontal beam through a screw rod a; the vertical rod 5 is welded with the steel bar 3, the lower end of the vertical rod 5 is welded with the chuck 8, and the lower end of the chuck 8 is connected with the copper sheet 11 through a screw c; the vertical rod 5 is welded with the steel bar 3, the lower end of the vertical rod 5 is welded with the chuck 8, and the lower end of the chuck 8 is connected with the copper sheet 11 through a screw c; the square steel plate 12 is welded with the upper end of the diagonal rod 13, and the square steel plate 12 is connected with the vertical rod 5 through a screw b; the lower end of the diagonal rod 13 is connected with the structural column; two magnets 10 slightly smaller than the copper sheets 11 are arranged on the inner sides of the two metal shells 7, the lower ends of the shells 7 are connected with the columns, and the upper ends of the shells are connected with the vertical rods 5 through screw rods b.
During the structure vibration, horizontal displacement takes place for the horizontal beam, horizontal steel sheet 1 and vertical steel sheet 4 take place whole displacement with the roof beam, vertical steel sheet 4's spout size is slightly bigger than the rod iron 3 diameter, can restrain the horizontal displacement of rod iron 3 for vertical steel sheet 4 but do not influence the vertical direction displacement of rod iron 3 for vertical steel sheet 4, consequently, rod iron 3 moves at the horizontal direction along with the horizontal beam, montant 5 is as the lever, its both ends are connected with rod iron 3 and copper sheet 11, connect montant 5 and shell 7 with screw rod b, wherein the shell 7 lower extreme is connected with the structure post, screw rod b is as the fulcrum of lever, screw rod b is to 3 distances R1 of rod iron and screw rod b to 11 distances R2 of copper sheet, make R1 > R2, thereby enlarge even roof beam shear displacement.
The copper sheet 11 is positioned in a cavity formed by the two fan-shaped permanent magnets 10, the permanent magnets 10 are wrapped by the shell 7 to prevent magnetic leakage, and the copper sheet cuts off the magnetic induction lines to generate an eddy current effect during vibration.
According to the invention, the horizontal movement of the steel bar 3 is converted into the rotation of the copper sheet 10 and eddy current is generated for energy consumption, the interlayer shearing displacement can be multiplied by the lever action of the vertical rod 5, the horizontal displacement of the steel bar 3 enables the copper sheet 10 to generate a larger angle to enable the copper sheet 10 to rotate, and the energy consumption efficiency is greatly improved; the damping parameters can be adjusted by adjusting the distance ratio from the screw rod b to the steel rod 3 and the copper sheet, the magnetic field intensity of the permanent magnet 10, the thickness of the copper sheet 11 and the distance from the copper sheet 11 to the permanent magnet 10; the permanent magnet 10 is adopted to provide a continuous magnetic field source, external energy sources are not needed, and a long-term stable vibration reduction effect can be generated; the magnetic conduction material is adopted, so that magnetic leakage of a magnetic circuit can be effectively avoided, the eddy current damping efficiency is improved, and the influence on various surrounding components is avoided; the invention has the advantages of reasonable design, simple structure, convenient installation and good application prospect.
Attention is required in designing the present invention: firstly, the size of the sliding chute of the vertical steel plate 4 is slightly larger than the diameter of the steel bar 3, so that the horizontal displacement of the steel bar 3 relative to the vertical steel plate 4 can be restrained, and the vertical displacement of the steel bar 3 relative to the vertical steel plate 4 is not influenced; secondly, the outer part of the permanent magnet 10 is wrapped by the shell 7, and the shell 7 forms a closed space to prevent magnetic leakage; thirdly, the distance R1 between the screw b and the steel bar 3 is smaller than the distance R2 between the screw b and the copper sheet 11, so that the shearing displacement can be amplified, the ratio of the distances between the screw b and the copper sheet can be adjusted, the amplification factor can be adjusted, and the three are all on the axis of the lever.
The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.
Claims (3)
1. An interlayer shearing amplification type eddy current damper is characterized by comprising a horizontal steel plate, a screw rod a, a steel rod, a vertical steel plate, a vertical rod, a screw rod b, a shell, a chuck, a screw rod c, a magnet, a square steel plate, an inclined rod and a copper sheet;
the two vertical steel plates are welded below the horizontal steel plate, the middle parts of the vertical steel plates are provided with sliding chutes, the size of each sliding chute is larger than the diameter of the steel bar, and the sliding chutes are used for restraining the horizontal displacement of the steel bar relative to the vertical steel plates and not influencing the vertical displacement of the steel bar relative to the vertical steel plates;
the steel bar is clamped in a sliding groove reserved in the vertical steel plate;
the horizontal steel plate is connected with the horizontal beam through a screw rod a;
the vertical rod is vertically welded with the steel bar, and the lower end of the vertical rod is welded with the chuck;
the lower end of the chuck is connected with the copper sheet through a screw c;
the square steel plate is welded with the upper end of the diagonal rod, and the square steel plate is connected with the vertical rod through a screw rod b;
the lower end of the diagonal rod is connected with the structural column;
two magnets smaller than the copper sheets are arranged on the inner sides of the two metal shells, the lower ends of the shells are connected with the structural columns, and the upper ends of the shells are connected with the vertical rods through screw rods b.
2. The eddy current damper according to claim 1, wherein the distance R1 between screw b and steel bar is smaller than the distance R2 between screw b and copper sheet, the ratio of the two distances is adjusted, and the magnification is adjusted, and the three distances are on the axis of the lever.
3. The eddy current damper according to claim 1 or 2, wherein the horizontal steel plate, the screw a, the steel bar, the vertical steel plate, the vertical rod, the screw b, the chuck, the screw c, the square steel plate and the diagonal rod are made of a magnetically conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110135691.6A CN112796558A (en) | 2021-02-01 | 2021-02-01 | Interlayer shearing amplification type eddy current damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110135691.6A CN112796558A (en) | 2021-02-01 | 2021-02-01 | Interlayer shearing amplification type eddy current damper |
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| Publication Number | Publication Date |
|---|---|
| CN112796558A true CN112796558A (en) | 2021-05-14 |
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| CN202110135691.6A Pending CN112796558A (en) | 2021-02-01 | 2021-02-01 | Interlayer shearing amplification type eddy current damper |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415811A (en) * | 2002-09-30 | 2003-05-07 | 同济大学 | Damper for runing dissipation of energy of electromagnetic eddy current |
| KR101631040B1 (en) * | 2015-12-03 | 2016-06-15 | 주식회사 디알비동일 | Displacement amplification damper |
| CN106337591A (en) * | 2016-09-30 | 2017-01-18 | 陈政清 | Novel pendulum-type eddy current damping tuned mass vibration absorber |
| CN106992485A (en) * | 2017-06-07 | 2017-07-28 | 广东电网有限责任公司电力科学研究院 | A kind of current vortex power consumption damper |
| CN107355509A (en) * | 2017-08-10 | 2017-11-17 | 东南大学 | A kind of current vortex vibration absorber using lever principle |
| CN110295685A (en) * | 2019-03-29 | 2019-10-01 | 北京建筑大学 | The compound tuned damper of novel half active |
-
2021
- 2021-02-01 CN CN202110135691.6A patent/CN112796558A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415811A (en) * | 2002-09-30 | 2003-05-07 | 同济大学 | Damper for runing dissipation of energy of electromagnetic eddy current |
| KR101631040B1 (en) * | 2015-12-03 | 2016-06-15 | 주식회사 디알비동일 | Displacement amplification damper |
| CN106337591A (en) * | 2016-09-30 | 2017-01-18 | 陈政清 | Novel pendulum-type eddy current damping tuned mass vibration absorber |
| CN106992485A (en) * | 2017-06-07 | 2017-07-28 | 广东电网有限责任公司电力科学研究院 | A kind of current vortex power consumption damper |
| CN107355509A (en) * | 2017-08-10 | 2017-11-17 | 东南大学 | A kind of current vortex vibration absorber using lever principle |
| CN110295685A (en) * | 2019-03-29 | 2019-10-01 | 北京建筑大学 | The compound tuned damper of novel half active |
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