CN209941947U - Eddy current damper and eddy current tuned mass damper - Google Patents
Eddy current damper and eddy current tuned mass damper Download PDFInfo
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- CN209941947U CN209941947U CN201920409290.3U CN201920409290U CN209941947U CN 209941947 U CN209941947 U CN 209941947U CN 201920409290 U CN201920409290 U CN 201920409290U CN 209941947 U CN209941947 U CN 209941947U
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Abstract
The patent of the utility model relates to a attenuator technical field, concretely relates to eddy current damper and harmonious mass damper of eddy current. This eddy current damper is including installing a plurality of permanent magnets on the magnet mounting panel, install the conductor board on the second end plate, the conductor board is located between the magnet mounting panel, wherein the magnet polarity of conductor both sides is opposite, the magnet mounting panel is installed on two side extension boards, the collateral branch board is installed in the same one side of first end plate, be equipped with the gusset between the collateral branch board, be provided with linear bearing on gusset and the first end plate respectively, be equipped with the guide arm on the second end plate, the guide arm passes gusset and linear bearing, connect first end plate and second end plate as a whole. The tuned mass damper of the present invention comprises one or more eddy current dampers. The utility model discloses to prior art's not enough, solved the more inconvenient problem of damping coefficient adjustment of current attenuator magnetic leakage, and production convenient assembling.
Description
Technical Field
The patent of the utility model relates to a attenuator technical field, concretely relates to eddy current damper and harmonious mass damper of eddy current.
Background
With the development of science and technology and urban construction, high-rise buildings and large-span bridges are more and more, and the buildings have the characteristics that although the strength and the rigidity can easily meet the design requirements, the vibration frequency of the buildings is lower. For example, the natural vibration frequency of a pedestrian overpass is generally about 2Hz, and the excitation frequency generated by walking of people is also near 2Hz, so that bridge resonance is easily caused, serious discomfort and panic are caused to pedestrians, meanwhile, the structure can be damaged, and even more serious pedestrian safety accidents are caused. In addition, the cost is often greatly increased by changing the structure and increasing the natural frequency of the device. In addition, some high-rise buildings, tower-type buildings and the like can resonate under the action of wind load to generate large-amplitude swing, which causes serious discomfort to office workers in the buildings and also causes great damage to the buildings. To address such issues, it is a common and effective way to increase TMD in engineering design to achieve damping.
TUNED mass dampers (TUNED MASS DAMPER, TMD for short), also called dynamic vibration absorbers, are known which are made by attaching a substructure to a main structure, the natural frequency of which is close to the natural frequency of the main structure. When the main structure vibrates, the sub-structure generates an opposite inertia force, so that the vibration of the main structure is attenuated. Due to the characteristic requirements of the working principle of the damping device, the requirement on the parameters of the TMD is high, if the frequency is not properly set, the effect is greatly attenuated, and larger vibration can be caused.
In the common TMD product, the additional damping units include a liquid type damper and an eddy current damper, but the liquid type damper has a limited life due to friction, leakage and the like during operation, and therefore, the eddy current damper is generally used for occasions requiring frequent use and durability. However, there are several common forms of eddy current damper type TMD on the market: 1) the eddy current damper adopts a special-shaped permanent magnet (such as a round magnet) as a magnetic field source, and has higher processing difficulty and higher cost; 2) the eddy current assembly is arranged on the side edge of the TMD mass block, the conductor plate and one end of the permanent magnet form the eddy current assembly, and in the mode, because only part of magnetic induction lines at one end of the permanent magnet penetrate through the conductor plate, more magnetic leakage can be caused, and the efficiency of the eddy current is influenced; 3) the other part of the electric eddy current TMD is provided with the conductor plates at two sides of the permanent magnet, and in the mode, because only part of the magnetic induction lines at one end of the permanent magnet penetrate through the conductor plates, more magnetic leakage can be caused, and the efficiency of the electric eddy current is influenced; in addition, the eddy current type TMD is provided with an additional eddy current damping unit which is often integrated with the TMD subject structure without forming an independent module, so that the production, assembly and field damping coefficient debugging are very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide an eddy current damper and harmonious mass damper of eddy current, solved the more inconvenient problem of damping coefficient adjustment of current damper magnetic leakage, and production convenient assembling.
The technical scheme of the utility model is realized like this: this eddy current damper, including electric eddy current subassembly, attenuator adjusting part, direction subassembly and installation component, its characterized in that still includes a plurality of permanent magnets of installing on the magnet mounting panel, installs the conductor board on the second end board, the conductor board is located between the magnet mounting panel, and wherein the magnet polarity of conductor both sides is opposite, the magnet mounting panel is installed on two side extension boards, the side extension board is installed in the same one side of first end plate, is equipped with the gusset between the side extension board, be provided with linear bearing on gusset and the first end plate respectively, be equipped with the guide arm on the second end plate, the guide arm passes gusset and linear bearing, connects first end plate and second end plate as a whole.
Preferably, the arrangement between the permanent magnets is such that the transverse distance W between the permanent magnets in the direction of relative movement is greater than the longitudinal distance L.
The utility model discloses a magnet installation board, including magnet installation board, lateral branch board, pull screw pole and the mounting panel, the magnet installation board is connected with the lateral branch board through-hole, pull screw pole on the lateral branch board and the screw hole on the mounting panel, still is equipped with the thrust screw pole on the lateral branch board, the screw hole that the thrust screw pole passes through on the lateral branch board is screwed and is withstood the magnet installation board, pull screw pole and push screw pole pass through interact, pin the position of magnet installation board, realize.
The back of first end plate and the back of second end plate with be provided with first installation axle and second installation axle respectively, first installation axle and second installation axle are provided with the round pin shaft hole.
Preferably, the permanent magnet is Ru ferroboron or ferrite.
The conductor plate is copper or aluminum.
The utility model provides a harmonious mass damper, includes mounting plate, connecting plate, mass subassembly, elastic element, guide bar, metal linear bearing, limiting plate and limit nut, mass subassembly and elastic element install between mounting plate and connecting plate, still include one or more the eddy current damper.
Preferably, the guide rod is arranged inside the elastic element, the metal linear bearing is arranged at the top of the connecting plate, and the guide rod penetrates through the metal linear bearing.
The utility model provides an existing defect among the background art, have following beneficial effect:
the utility model provides a reliable eddy current damper and harmonious mass damper of eddy current of performance has solved the more inconvenient problem of damping coefficient adjustment of current attenuator magnetic leakage, and production convenient assembling. The utility model discloses set up the conductor board between the magnet mounting panel, wherein the magnet polarity of conductor both sides is opposite, causes conductor both sides magnet magnetic pole inter attraction, and most magnetic line of force can both pass the conductor board perpendicularly, and the magnetic leakage is very little, and consequently the utilization efficiency of magnet is higher. Meanwhile, the permanent magnet blocks are arranged in the following manner: the distance W between the relative movement directions is larger than the longitudinal distance L between the magnets perpendicular to the relative movement directions, so that mutual coupling between the magnets in the relative movement directions can be reduced, namely, magnetic lines of force parallel to the relative movement directions are reduced, most of the magnetic lines of force vertically penetrate through the conductor plate, and the utilization efficiency of the magnets is further improved. Through pulling force lead screw and thrust lead screw interact alright pin the position of magnet mounting panel, and then adjust the precession distance of lead screw, can realize the clearance adjustment between magnet and the conductor board to realize the function that the attenuator damping was adjusted, have simple structure, convenient operation's characteristics.
Drawings
Fig. 1 is a schematic structural view of an eddy current damper according to the present invention;
FIG. 2 is a schematic layout view of FIG. 1;
FIG. 3 is a schematic structural view of a spacing adjustment structure between the magnet mounting plate and the side plate in FIG. 1;
fig. 4 is a schematic structural diagram of embodiment 1 of the eddy current tuned mass damper of the present invention;
fig. 5 is a schematic structural diagram of embodiment 2 of the eddy current tuned mass damper of the present invention;
fig. 6 is a schematic structural diagram of embodiment 3 of the eddy current tuned mass damper of the present invention;
in the figure: 1-permanent magnet, 2-magnet mounting plate, 3-side support plate, 4-conductor plate, 5-first end plate, 6-second end plate, 7-guide rod, 8-rib plate, 9-linear bearing, 10-first mounting shaft, 11-second mounting shaft, 201-tension screw rod, 202-thrust screw rod, 13-mounting bottom plate, 14-connecting plate, 15-mass component, 16-elastic element, 17-guide rod, 18-metal linear bearing, 19-limiting plate, 20-limiting nut and 100-eddy current component.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, an embodiment of an eddy current damper and an eddy current tuned mass damper includes an eddy current assembly, a damper adjusting assembly, a guiding assembly and a mounting assembly, a plurality of permanent magnets 1 mounted on a magnet mounting plate 2, a conductor plate 4 mounted on a second end plate 6, the conductor plate 4 is located between the magnet mounting plates 2, wherein the polarities of the magnets on both sides of the conductor are opposite, the magnet mounting plates 2 are mounted on two side support plates 3, the side support plates 3 are mounted on the same side of a first end plate 5, rib plates 8 are disposed between the side support plates 3, linear bearings 9 are respectively disposed on the rib plates 8 and the first end plate 5, a guide rod 7 is disposed on the second end plate 6, the guide rod 7 penetrates through the rib plates 8 and the linear bearings 9, and the first end plate 5 and the second end plate 6 are connected into a. Because this eddy current damper can adopt the magnet of common shape specification, therefore this kind of eddy current damper structure has simple structure, characteristics with low costs, simultaneously because conductor both sides magnet magnetic pole inter attraction, most magnetic force lines can both pass the conductor board perpendicularly, and the magnetic leakage is few, therefore this kind arranges the utilization efficiency of magnet higher. As shown in fig. 2, the arrangement between the permanent magnets 1 is such that the transverse spacing W between the relative movement directions is greater than the longitudinal distance L. Therefore, mutual coupling among the magnets in the relative movement direction can be reduced, namely, magnetic lines of force parallel to the relative movement direction are reduced, most of the magnetic lines of force vertically penetrate through the conductor plate, and the utilization efficiency of the magnets is improved. As shown in fig. 3, the magnet mounting plate 2 is connected to the side supporting plate 3 through a through hole on the side supporting plate 3, a tension lead screw 201 and a threaded hole on the mounting plate, a thrust lead screw 202 is further disposed on the side supporting plate 3, the tension lead screw 201 and the thrust lead screw 202 fasten the magnet mounting plate 2 through the threaded hole on the side supporting plate 3, the tension lead screw 201 and the thrust lead screw 202 lock the position of the magnet mounting plate 2 through interaction, and gap adjustment between the permanent magnet 1 and the conductor plate 4 is achieved. Like this pulling force lead screw 201 and thrust lead screw 202 interact alright pin the position of magnet mounting panel, through the precession distance of adjusting each lead screw, can realize the clearance adjustment between magnet and the conductor board to realize the function that the attenuator damping was adjusted, have simple structure, convenient operation's characteristics. The back of first end plate 5 and the back of second end plate 6 and be provided with first installation axle 10 and second installation axle 11 respectively, first installation axle 10 and second installation axle 11 are provided with the round pin shaft hole. The permanent magnet 1 is Ru FeB or ferrite. The conductor plate 4 is copper or aluminum.
The utility model also discloses a harmonious mass damper, as embodiment 1 shown in fig. 4, including mounting plate 13, connecting plate 14, quality subassembly 15, elastic element 16, guide bar 17, linear bearing 18, limiting plate 19 and stop nut 20, quality subassembly 15 and elastic element 16 are installed between mounting plate 13 and connecting plate 14, still include an eddy current damper 100. A guide rod 17 is arranged inside the elastic element 16, a metal linear bearing 18 is arranged on top of the connection plate 14, and the guide rod 17 passes through the metal linear bearing 18. The eddy current damper 100 can be provided without a guide rod and a linear bearing, and the guide rod 17 and the metal linear bearing 18 configured by the tuned mass damper itself can be directly used. The harmonic mass damper also realizes the functions of less magnetic flux leakage and convenient damping coefficient adjustment.
As shown in embodiment 2 of fig. 5, the tuned mass damper comprises two eddy current dampers 100. The eddy current dampers 100 are symmetrically disposed at both ends of the soleplate 13 and the connecting plate 14.
As shown in embodiment 3 of fig. 6, the tuned mass damper comprises three eddy current dampers 100. The eddy current dampers 100 are symmetrically arranged at both ends and in the middle of the soleplate 13 and the connecting plate 14.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An eddy current damper comprises an eddy current component, a damper adjusting component, a guide component and a mounting component, characterized in that the device also comprises a plurality of permanent magnets (1) arranged on the magnet mounting plates (2) and conductor plates (4) arranged on the second end plate (6), wherein the conductor plates (4) are positioned between the magnet mounting plates (2), wherein the polarities of the magnets on the two sides of the conductor are opposite, the magnet mounting plates (2) are arranged on the two side supporting plates (3), the side supporting plates (3) are arranged at the same side of the first end plate (5), rib plates (8) are arranged between the side supporting plates (3), the rib plate (8) and the first end plate (5) are respectively provided with a linear bearing (9), and the second end plate (6) is provided with a guide rod (7), and the guide rod (7) penetrates through the rib plate (8) and the linear bearing (9) to connect the first end plate (5) and the second end plate (6) into a whole.
2. The eddy current damper according to claim 1, characterized in that: the transverse distance W between the permanent magnets (1) in the relative movement direction is greater than the longitudinal distance L.
3. The eddy current damper according to claim 1 or 2, characterized in that: magnet mounting panel (2) are connected with side extension board (3) through the screw hole on through-hole, tensile screw pole (201) and the mounting panel on side extension board (3), still are equipped with thrust screw pole (202) on side extension board (3), screw hole through side extension board (3) on thrust screw pole (202) is screwed and is withstood magnet mounting panel (2), the position of tensile screw pole (201) and thrust screw pole (202) pin magnet mounting panel (2) through the interact, realizes the clearance adjustment between permanent magnet (1) and conductor board (4).
4. The eddy current damper according to claim 3, characterized in that: the back of first end plate (5) and the back of second end plate (6) with be provided with first installation axle (10) and second installation axle (11) respectively, first installation axle (10) and second installation axle (11) are provided with the round pin shaft hole.
5. The eddy current damper according to claim 4, characterized in that: the permanent magnet (1) is Ru-Fe-B or ferrite.
6. The eddy current damper according to claim 5, characterized in that: the conductor plate (4) is made of copper or aluminum.
7. A tuned mass damper, comprising a mounting baseplate (13), a connecting plate (14), a mass assembly (15), an elastic element (16), a guide rod (17), a metal linear bearing (18), a limiting plate (19) and a limiting nut (20), wherein the mass assembly (15) and the elastic element (16) are mounted between the mounting baseplate (13) and the connecting plate (14), and is characterized in that: further comprising one or more eddy current dampers according to claims 1-6.
8. The tuned mass damper according to claim 7, wherein: the guide rod (17) is arranged inside the elastic element (16), the metal linear bearing (18) is arranged at the top of the connecting plate (14), and the guide rod (17) penetrates through the metal linear bearing (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920409290.3U CN209941947U (en) | 2019-03-28 | 2019-03-28 | Eddy current damper and eddy current tuned mass damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920409290.3U CN209941947U (en) | 2019-03-28 | 2019-03-28 | Eddy current damper and eddy current tuned mass damper |
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| CN209941947U true CN209941947U (en) | 2020-01-14 |
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| CN201920409290.3U Active CN209941947U (en) | 2019-03-28 | 2019-03-28 | Eddy current damper and eddy current tuned mass damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914633A (en) * | 2019-03-28 | 2019-06-21 | 云南震安减震科技股份有限公司 | Eddy current damper and eddy current tuned mass damper |
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2019
- 2019-03-28 CN CN201920409290.3U patent/CN209941947U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914633A (en) * | 2019-03-28 | 2019-06-21 | 云南震安减震科技股份有限公司 | Eddy current damper and eddy current tuned mass damper |
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