CN212957068U - Electromagnetic combined nonlinear eddy current TMD vibration damping device - Google Patents
Electromagnetic combined nonlinear eddy current TMD vibration damping device Download PDFInfo
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- CN212957068U CN212957068U CN202021235145.7U CN202021235145U CN212957068U CN 212957068 U CN212957068 U CN 212957068U CN 202021235145 U CN202021235145 U CN 202021235145U CN 212957068 U CN212957068 U CN 212957068U
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Abstract
The utility model discloses an electromagnetism combination nonlinear current vortex TMD damping device, including fixed knot structure and vibration structure, fixed knot constructs including roof and permanent magnet, sets up two rows of permanent magnets below the roof, concatenates a plurality of permanent magnets through the magnet connecting rod interval in each row of permanent magnet, and the both ends of magnet connecting rod are fixed in on the magnet supporting shoe, and the magnet supporting shoe is fixed in on the roof; the vibration structure comprises a spring system, conductor plates and mass blocks, wherein a plurality of mass blocks are connected in series between two rows of permanent magnets at intervals through conductor plate connecting rods, two conductor plates are arranged between the two mass blocks in parallel, the two parallel conductor plates respectively extend into space spaces between the mass blocks on two sides, two ends of the conductor plate connecting rods are fixed on the spring system, and the upper end of the spring system is fixed on a top plate. The utility model discloses the increase of the nonlinear electric eddy current damping bandwidth of production, the damping force reinforcing to when the major structure produced the change of quality or rigidity because of ageing, this device still can provide the damping force of ideal.
Description
Technical Field
The utility model belongs to the technical field of the engineering antidetonation, especially, relate to an electromagnetism combination nonlinear electric vortex TMD damping device.
Background
Earthquakes are common natural disasters, and in engineering construction, in order to reduce the influence of the earthquakes on building structures, energy dissipation and shock absorption devices are usually required to be arranged in the building structures so as to consume earthquake energy and reduce the damage of the earthquakes on the building structures. The frequency modulation mass damper (TMD) is a commonly used energy dissipation and shock absorption device in a building structure, mainly comprises a rigidity system, a mass system and a damping system, and is widely applied to the damping system due to the advantages of non-contact, low friction, convenient maintenance, long service life, simple working principle, convenient control and high reliability of the eddy current damper. However, the damping bandwidth of the current linear eddy current TMD is narrow, the damping force is limited, and when the main structure is aged to generate a change in mass or stiffness, the existing damping device cannot provide an ideal damping force.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electromagnetism combination nonlinear current vortex TMD damping device aims at solving the problem that prior art exists among the above-mentioned background art.
In order to achieve the above object, the utility model adopts the following technical scheme:
an electromagnetic combined non-linear eddy current TMD vibration damping device comprises a fixed structure and a vibration structure, wherein the fixed structure comprises a top plate and permanent magnets, two rows of permanent magnets are arranged below the top plate, a plurality of permanent magnets are connected in series in each row of permanent magnets at intervals through magnet connecting rods, two ends of each magnet connecting rod are fixed on magnet supporting blocks, and the upper ends of the magnet supporting blocks are fixed at the bottom of the top plate; the vibration structure comprises a spring system, a conductor plate and mass blocks, wherein the mass blocks are connected in series at intervals and fixed on a conductor plate connecting rod, the mass blocks after being connected in series are located between two rows of permanent magnets, two rows of conductor plates are fixed on the conductor plate connecting rod in parallel with the mass blocks 12 at intervals, the two rows of conductor plates respectively extend into mass block interval vacant positions on two sides of the conductor plate connecting rod, two ends of the conductor plate connecting rod are fixed on the spring system through fixing plates respectively, and the upper end of the spring system is fixed at the bottom of the top plate.
Preferably, the spring system comprises a spring, a support plate, a sliding guide rod and a limiting bolt, the upper end of the spring is fixed at the bottom of the top plate, the lower end of the spring is fixed on the sliding guide rod, the support plate is fixed on the sliding guide rod, the limiting bolt is respectively arranged on the sliding guide rod and positioned at the upper side and the lower side of the support plate, and the two ends of the conductor plate connecting rod are respectively fixed on the support plate through fixing plates.
Preferably, two groups of conductor plate connecting rods are horizontally fixed between the fixing plates, each group of conductor plate connecting rods is two conductor plate connecting rods which are parallel up and down, two rows of conductor plates are respectively arranged on the two groups of conductor plate connecting rods in series, and the conductor plate connecting rod which is positioned above the two groups of conductor plate connecting rods is connected with the mass block in series.
Preferably, an upper edge of the mass is not higher than an upper edge of the conductor plate.
Preferably, the conductor plate is a square plate, a triangular plate, a semicircular plate, or a saw-tooth plate.
Preferably, the conductor plate is an alloy plate, and the magnet connecting rod and the conductor plate connecting rod are both alloy rods.
Compare in prior art's shortcoming and not enough, the utility model discloses following beneficial effect has:
the electromagnetic combined nonlinear eddy current TMD damping device of the utility model is provided with a fixed structure part with a permanent magnet and a vibration structure part with a conductor plate and a mass block, the vibration structure part moves up and down under the action of a spring, the conductor plate vibrates and cuts a magnetic induction line to generate eddy current damping, the shape of the conductor plate in a magnetic field can be changed to generate nonlinear damping, and the damping bandwidth is increased; and the device can still provide ideal damping force when the mass or rigidity of the main structure changes due to aging.
Drawings
Fig. 1 is a schematic side view of an electromagnetic combined nonlinear eddy current TMD damping device according to an embodiment of the present invention.
Fig. 2 is a schematic view of a fixing structure provided in an embodiment of the present invention.
Fig. 3 is a schematic diagram of a vibration structure according to an embodiment of the present invention.
Fig. 4 is a schematic bottom view of an electromagnetic combined nonlinear eddy current TMD damping device according to an embodiment of the present invention.
Fig. 5 is a cross-sectional view taken at a-a in fig. 1.
Fig. 6 is a schematic structural diagram of conductor plates of different shapes according to an embodiment of the present invention.
In the figure: 1-a top plate; 2-a magnet support block; 3-permanent magnets; 4-a magnet connecting rod; 5-a spring; 6-a support plate; 7-sliding guide rods; 8-a limit bolt; 9-fixing the plate; 10-conductor plate connection bar; 11-a conductor plate; 12-mass block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-5, an electromagnetic combination nonlinear eddy current TMD damping device comprises a fixed structure and a vibration structure, wherein the fixed structure is shown in fig. 2 and comprises a top plate 1, magnet support blocks 2, permanent magnets 3 and magnet connecting rods 4, two rows of permanent magnets 3 are arranged below the top plate 1, a plurality of permanent magnets 3 are connected in series in each row of permanent magnets through the horizontal magnet connecting rods 4, each permanent magnet 3 is spaced at an even distance, two ends of each magnet connecting rod 4 are fixed on the magnet support blocks 2, and the upper ends of the magnet support blocks 2 are fixed at the bottom of the top plate 1. The magnet connecting rods 4 are connected in series at the edges of two outer sides of the two rows of permanent magnets 3, and two magnet connecting rods 4 are respectively arranged at the upper part and the lower part. The vibrating structure is shown in fig. 3, and comprises a spring system, conductor plates 11 and mass blocks 12, wherein the spring system comprises a spring 5, a support plate 6, a sliding guide rod 7 and a limit bolt 8, a plurality of mass blocks 12 are fixedly connected in series between two rows of permanent magnets at uniform intervals through two horizontal conductor plate connecting rods 10, one row of mass blocks 12 connected in series are arranged corresponding to the two rows of permanent magnets 3 on two sides, two conductor plates 11 are arranged between every two mass blocks 12 in parallel to form two rows of conductor plates 11, the upper edge of each mass block 12 is controlled not to be higher than the upper edge of each conductor plate 11, one conductor plate connecting rod 10 is horizontally arranged below each two horizontal conductor plate connecting rods 10 of each series mass block 12, each row of conductor plates 11 are connected in series through two conductor plate connecting rods 10 which are parallel up and down on two sides, two ends of each conductor plate connecting rod 10 are respectively fixed on the fixing plates 9, the support plate 6 is fixed on the sliding guide rod 7, the sliding guide rod 7 is provided with a limit bolt 8 above and below the support plate 6, the upper end of the sliding guide rod 7 is fixed at the lower end of the spring 5, and the upper end of the spring 5 is fixed at the bottom of the top plate 1 (see 1, 4 and 5).
The utility model discloses well vibration structure part can be because of the vibration and along with the spring up-and-down motion, makes conductor plate 11 can produce the eddy current damping along with vibration cutting magnetic induction line. The conductor plate 11 is made of alloy plate, and the magnet connecting rod 4 and the conductor plate connecting rod 10 are made of high-strength alloy rods.
In order to provide nonlinear eddy current damping and further increase the vibration damping frequency band, the area of interaction between the conductor plate 11 and the permanent magnet 3 can be changed by using the conductor plates 11 with different shapes, the shape of the conductor plate 11 in the magnetic field can be changed, and the shape of the conductor plate 11 can be a square plate, a triangular plate, a semicircular plate or a sawtooth plate (refer to fig. 6), and can also be changed into any shape as required.
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 (6)
1. The electromagnetic combined non-linear eddy current TMD vibration damping device is characterized by comprising a fixed structure and a vibration structure, wherein the fixed structure comprises a top plate and permanent magnets, two rows of permanent magnets are arranged below the top plate, a plurality of permanent magnets are connected in series in each row of permanent magnets at intervals through magnet connecting rods, two ends of each magnet connecting rod are fixed on magnet supporting blocks, and the upper ends of the magnet supporting blocks are fixed at the bottom of the top plate; the vibration structure comprises a spring system, a conductor plate and mass blocks, wherein the mass blocks are connected in series at intervals and fixed on a conductor plate connecting rod, the mass blocks after being connected in series are located between two rows of permanent magnets, two rows of conductor plates are fixed on the conductor plate connecting rod in parallel with the mass blocks 12 at intervals, the two rows of conductor plates respectively extend into mass block interval vacant positions on two sides of the conductor plate connecting rod, two ends of the conductor plate connecting rod are fixed on the spring system through fixing plates respectively, and the upper end of the spring system is fixed at the bottom of the top plate.
2. The electromagnetic combined non-linear eddy current TMD damping device according to claim 1, wherein the spring system comprises a spring, a supporting plate, a sliding guide rod and a limiting bolt, the upper end of the spring is fixed to the bottom of the top plate, the lower end of the spring is fixed to the sliding guide rod, the supporting plate is fixed to the sliding guide rod, the limiting bolt is respectively disposed on the sliding guide rod at the upper side and the lower side of the supporting plate, and the two ends of the conductor plate connecting rod are respectively fixed to the supporting plate through the fixing plate.
3. The electromagnetic combined non-linear eddy current TMD damping device according to claim 1, wherein two sets of conductor plate connecting rods are horizontally fixed between the fixing plates, each set of conductor plate connecting rods is two conductor plate connecting rods parallel to each other, two rows of conductor plates are respectively connected in series to the two sets of conductor plate connecting rods, and the upper one of the two sets of conductor plate connecting rods is connected in series to the mass block.
4. The electromagnetically combined non-linear eddy current TMD vibration damping device according to claim 1 or 3, wherein an upper edge of the mass is not higher than an upper edge of the conductor plate.
5. The electromagnetic combined non-linear eddy current TMD damping device according to claim 4, wherein the conductor plate is a square plate, a triangular plate, a semicircular plate, or a saw-tooth plate.
6. The electromagnetic combined non-linear eddy current TMD damping device according to claim 1, wherein the conductor plate is an alloy plate, and the magnet connecting rod and the conductor plate connecting rod are both alloy rods.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021235145.7U CN212957068U (en) | 2020-06-30 | 2020-06-30 | Electromagnetic combined nonlinear eddy current TMD vibration damping device |
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| CN202021235145.7U CN212957068U (en) | 2020-06-30 | 2020-06-30 | Electromagnetic combined nonlinear eddy current TMD vibration damping device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323989A (en) * | 2021-05-25 | 2021-08-31 | 中国农业大学 | Vibration reduction device for armrest frame of electric mini-tiller and automatic electromagnetic damping optimization method |
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- 2020-06-30 CN CN202021235145.7U patent/CN212957068U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323989A (en) * | 2021-05-25 | 2021-08-31 | 中国农业大学 | Vibration reduction device for armrest frame of electric mini-tiller and automatic electromagnetic damping optimization method |
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