CN203308994U - Double-layer circular tube type axial force eddy current damper - Google Patents
Double-layer circular tube type axial force eddy current damper Download PDFInfo
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- CN203308994U CN203308994U CN2013202842749U CN201320284274U CN203308994U CN 203308994 U CN203308994 U CN 203308994U CN 2013202842749 U CN2013202842749 U CN 2013202842749U CN 201320284274 U CN201320284274 U CN 201320284274U CN 203308994 U CN203308994 U CN 203308994U
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Abstract
The utility model discloses a double-layer circular tube type axial force eddy current damper. The double-layer circular tube type axial force eddy current damper is composed of an eddy-current damping system, a guiding system and a connecting system. The eddy-current damping system is composed of a circular magnet and a double-layer circular tube, wherein the double-layer circular tube is formed by sleeving an inner circular tube made of highly-conductive non-magnetic materials with an outer circular tube made of high-permeability magnetic materials. The guiding system is composed of a guiding ring, an inner guiding shaft and a hollow circular supporting column; the guiding system has an outer layer guiding function and an inner layer guiding function; or, only one guiding function can be set depending on the circumstances. The connecting system is composed of a connecting block and a support, wherein the connecting block is arranged at the upper end of the double-layer circular tube and the support is arranged at the lower end of the circular magnet. According to the double-layer circular tube type axial force eddy current damper, the unique design of the double-layer circular tube enables all magnetic lines of force to perpendicularly cut the inner circular tube of a conductive body and not to be distributed outside the double-layer circular tube as long as one circular magnet is arranged on the inner tube side of the conductive body, and the purposes of improving eddy current efficiency and shielding an external magnetic field are achieved at the same time.
Description
Technical field
The utility model relates generally to a kind of axial force damper that utilizes eddy current principle, belongs to the structural vibration control technical field.
Background technique
Damper can suppress the vibration from miniature instrument to mammoth structure.Eddy current damper is a kind of superior performance, has a kind of vibration-reducing and damping device of development prospect.The basic principle of electric convolution is: when the conductor cutting magnetic line, can in conductor, produce electric convolution, so that the thermal effect that has a resistance consumes vibrational energy; Electric convolution can produce again the new magnetic field opposite with magnetic field, thereby produces the damping force opposite with conductor moving direction, plays the effect of oscillation damping and energy dissipating.Compare more existing damping devices, it does not rely on the mechanical friction power consumption, does not have sealing and leakage problem, damping is easily regulated, and simple structure has improved its reliability and durability greatly, be particularly suitable for requiring the long and structure of easy care not fatigue life, as bridge and astrovehicle etc.Eddy current damper also exists low frequency state inefficiency and leakage field phenomenon, is further to apply key issue urgently to be resolved hurrily.The eddy current damper that current structural vibration reduction is used can be divided into two classes.One class is flat damper, and advantage is that planar any direction provides damping force, and shortcoming is leakage field problems affect damper efficiency and application area.Another kind of is the axial force damper, generally does circularly, and efficiency is higher and be easy to solve the leakage field problem.Inside and outside two groups of additional radomes of circular magnet, complicated structure are used in domestic invention of having announced.
The model utility content
In order to address the above problem, the utility model provides a kind of double-layer circular cast axial force eddy current damper, can be used to make large, medium and small all kinds of damper.Damping force be produced as non-contacting way of electromagnetic induction, do not rub, do not have working fluid and Sealing, have simple in structurely, fatigue life is long, almost maintenance-free advantage.Damping force is near desirable alinear viscous damp, and additional stiffness is minimum.This damper has also solved the leakage field problem.As adopt electromagnet, this damper only need arrange in electric conductor pipe inboard one group of circular magnet, all the magnetic line of force all can also only pass through in pipe by the interior pipe of square cut electric conductor outside leading circular magnet, reaches simultaneously the purpose that improves electric convolution efficiency and external shielding magnetic field.The utility model has also been simplified the damper internal structure.
The utility model provides a kind of double-layer circular cast axial force eddy current damper, and its structure comprises integral body and lower integral body; Described upper integral body comprises interior pipe 2, outer pipe 3 and link 9, wherein in pipe 2 and double-deck pipe of the nested formation of outer pipe 3, interior pipe 2 upper ends are connected with link 9 bottoms; Described lower integral body comprises circular magnet 1, round pole plate 12, circular bearing post 8 and bearing 10, circular magnet 1 Shang Xia two ends all fixedly be coated with area be greater than circular magnet 1 and with the discontiguous round pole plate 12 of interior pipe 2, lower end round pole plate 12 is fixed on circular bearing post 8 tops, and bearing 10 is connected with circular bearing post 8 bottoms; Between described upper integral body and circular bearing post 8, be provided with guide structure, described upper integral body through described guide structure can be relatively circular the slip done along interior pipe 2 axial directions of bearing post 8; Described outer pipe 3 and round pole plate 12 are made for permeability magnetic material; Described interior pipe 2 is for to make every nonmagnetic electrically conductive material; Described circular bearing post 8 is made for NULL.
Above-mentioned guide structure can be outer guide structure, namely on the round pole plate 12 on circular magnet 1 top, fixes inside and outside guide ring 6, and the inwall of interior pipe 2 can slide along the periphery wall of guide ring inside and outside this 6; The bottom of interior pipe 2 is fixed with outer guide ring 7, and the inner ring wall of this outer guide ring 7 can slide along the outer wall of circular bearing post 8; Inside and outside guide ring 6 and outer guide ring 7 are provided with the ventilation breach, guarantee the pipe inside and outside air pressure balance; Described outer guide ring 7 is made for NULL; Described inside and outside guide ring 6 is for to make every magnetic high molecular abrasion-proof material.
Above-mentioned guide structure also can be interior guide structure, namely on the round pole plate 12 on circular magnet 1 top, fixes inside and outside guide ring 6, and the inwall of interior pipe 2 can slide along the periphery wall of guide ring inside and outside this 6; Be that hollow-core construction and circular bearing post 8 tops that are provided with the vent 11 that guarantees air pressure balance arrange interior guide ring 5; The axis of guide 4 that top is fixedly connected with described link 9 bottoms passes the guiding axis hole on the circular pole plate 12 in inside and outside guide ring 6, circular magnet 1 and two ends thereof, interior guide ring 5 successively, and the described axis of guide 4 can slide in described guiding axis hole; Inside and outside guide ring 6 is provided with the ventilation breach, guarantees the pipe inside and outside air pressure balance; The described axis of guide 4 and interior guide ring 5 are made for NULL; Described inside and outside guide ring 6 is made for the high molecular abrasion-proof material.
Above-mentioned guide structure also can be inside and outside guide structure, namely on the round pole plate 12 on circular magnet 1 top, fixes inside and outside guide ring 6, and the inwall of interior pipe 2 can slide along the periphery wall of guide ring inside and outside this 6; The bottom of interior pipe 2 is fixed with outer guide ring 7, and the inner ring wall of this outer guide ring 7 can slide along the outer wall of circular bearing post 8; Be that hollow-core construction and circular bearing post 8 tops that are provided with the vent 11 that guarantees air pressure balance arrange interior guide ring 5; The axis of guide 4 that top is fixedly connected with described link 9 bottoms passes the guiding axis hole on the circular pole plate 12 in inside and outside guide ring 6, circular magnet 1 and two ends thereof, interior guide ring 5 successively, and the described axis of guide 4 can slide in described guiding axis hole; Inside and outside guide ring 6 and outer guide ring 7 are provided with the ventilation breach, guarantee the pipe inside and outside air pressure balance; The described axis of guide 4, interior guide ring 5 and outer guide ring 7 are made for NULL; Described inside and outside guide ring 6 is for to make every magnetic high molecular abrasion-proof material.
In above-mentioned damper, described outer pipe 3 and round pole plate 12 can be electrician's soft iron and make; Described interior pipe 2 can be copper; The described axis of guide 4, interior guide ring 5, outer guide ring 7 and circular bearing post 8 can be stainless steel and make; Described inside and outside guide ring 6 can be teflon and makes.
In above-mentioned damper, described circular magnet 1 can be the circular electric magnet.
In above-mentioned damper, described circular magnet 1 and round pole plate 12 can be a plurality of, by round pole plate 12, the circular magnet 1 of N-S, round pole plate 12, the circular magnet 1 of S-N, round pole plate 12, the circular magnet 1 of N-S, round pole plate 12 ... order series connection.
In above-mentioned damper, can be provided with ball pivot on link 9, bearing 10 can be steel horizontal slip bearing.
Working principle of the present utility model is described as follows:
Fig. 1 is the electric convolution basic principle schematic.When conductive plate motion cutting magnetic line, in plate, produce the annular electro eddy current, this electric current produces a damping force opposite with moving direction immediately, its size and movement velocity, magnetic intensity and variation rate of magnetic flux are directly proportional.General eddy current damper also adopts the be placed in mode of conductive plate both sides of circular magnet.
Electric convolution generation system of the present utility model is different from Fig. 1, the double-layer circular tubular construction that the interior pipe 2 of being made by strong conductive material and the outer pipe 3 that strong permeability magnetic material is made closely cooperate and form, only make and need in conduction, one group of circular magnet be set the inboard of pipe, all the magnetic line of force all can can't distribute by the interior pipe of square cut conduction beyond double-deck pipe, reaches simultaneously the purpose that improves electric convolution efficiency and external shielding magnetic field.
Below with Fig. 2, the utility model working principle is described.The A of Fig. 2 is partly the magnetic line of force distribution map of the circular magnet of single axial charging, and the magnetic line of force is full of the total space.Upper and lower surface at this circle magnet respectively adds the strong permeability magnetic material plate that a diameter is greater than circular magnet, and the magnetic line of force, according to the principle along the minimum reluctance path profile, will form respectively N to radially deflection, and the S pole plate, as shown in the B part of Fig. 2.Again it is placed in the long tube of strong permeability magnetic material that a diameter is greater than concentrating flux plate, as shown in the C part of Fig. 2, now nearly all magnetic line of force all can enter pipe outside magnetic conduction from the edge-perpendicular of N utmost point concentrating flux plate, along the cylindrical pipe noon to arrive S extremely near, vertically pass again magnetic conductive tube, get back to the S pole plate, without any the magnetic line of force, realized the purpose of external shielding magnetic field in the magnetic conductive tube outside.If be embedded in a copper pipe at magnetic conductive tube, form double-deck pipe, the copper pipe internal diameter still is a bit larger tham the magnetic pole external diameter, circular magnet and copper pipe keep not contact condition, as shown in the D part of Fig. 2, so when circular magnet and the relative movement vertically of double-deck pipe, all magnetic line of force square cut copper pipes twice, the direction of electric convolution just in time along pipe circumferentially, the damping force produced just in time vertically and opposite with moving direction, has improved single circular magnet and has produced the efficiency of eddy-current damping power and power consumption.Strengthen circular magnet diameter or can play with a plurality of circular magnet series connection the effect that increases maximum damping force and power consumption.The E of Fig. 2 is partly the magnetic circuit figure of two circular magnet series connection, and its magnetic flux is the twice of single circular magnet, and copper pipe can three cutting magnetic lines.Ground with good conditionsi can be used electromagnet as far as possible, at this moment just can realize half ACTIVE CONTROL or intelligent control.Circular magnet is fixed on the end face of circular bearing post 8, and circular bearing post 8 use NULL such as stainless steel are made, and can not change the magnetic circuit designed.
The guidance system effect of damper is that the two groups of parts up and down that guarantee damper move vertically, circular magnet and the discontiguous normal working of interior pipe.Fig. 1 is the situation of damper while only being provided with outer guidance system, and in Fig. 4, is provided with simultaneously inside and outside two cover guidance systems.Outer guidance system consists of inside and outside guide ring 6 and outer guide ring 7, and inside and outside guide ring 6 slides at the copper pipe internal surface, so should adopt high-abrasive material such as the polyfluortetraethylene plate of hardness lower than copper.Interior guidance system is by the axis of guide 4, and inside and outside guide ring 6 and interior guide ring 5 form.The axis of guide 4, interior guide ring 5 and circular bearing post 8 all will be made of non-magnet material such as stainless steel, and outer guide ring 7 can be done with steel.Small-sized damper can only be established a kind of guidance system.
The connected system of damper can make damper in space any direction work.In upper end contiguous block 9, establish ball pivot, with not additional rotation constraint after vibrational structure is connected, a passing shaft is to damping force.Hinged or fixed bearing connection can be adopted in lower end.During vertical work, circular bearing post bottom surface can add steel horizontal slip bearing, to avoid additional because between structure two tie points, existing horizontal relative displacement to produce disadvantageous horizontal restraint.
Damper uses electromagnet in place with good conditionsi as far as possible, at this moment just can realize half ACTIVE CONTROL or intelligent control.
Damper can increase the damper stroke by strengthening simultaneously the double-layer circular length of tube that consists of interior pipe 2 and outer pipe 3 and the length of circular bearing post 8.
The damper that the utility model provides is except keeping the intrinsic mechanical friction that do not rely on of eddy current damper to produce damping force, there is no working fluid and Sealing, stiction and additional stiffness are all very little, simple in structure durable, hardly with outside the advantages such as maintenance, with other axial eddy current dampers, compare, also have following advantage:
1. the double-layer circular tubular construction of described damper has not only improved the efficiency of eddy-current damping greatly, and has realized the function of external shielding magnetic field.
2. described damper need not separately be established magnetic shielding cover, only has one group of circular magnet, further simplifies the structure.Under the identical condition of weight, can obtain larger damping force and energy consumption effect.
3. in the critical component that intensity is low, pipe 2 and circular magnet 1 are attached to respectively on the outer pipe 3 and circular bearing post 8 that intensity is high, and the bulk strength of described damper is fine.
4. described damper provides inside and outside two cover guidance systems, is applicable to making large, medium and small all kinds of axial force dampers.
5. connected system has been eliminated the additional various unfavorable constraint of vibrational structure likely produced as far as possible
The accompanying drawing explanation
Fig. 1 is the electric convolution basic principle schematic
Fig. 2 is the utility model principle schematic
Fig. 3 is the example structure schematic diagram of the utility model while only being provided with outer guide structure
Fig. 4 is the example structure schematic diagram of the utility model while only being provided with interior guide structure
Fig. 5 is the example structure schematic diagram of the utility model while being provided with simultaneously inside and outside guide structure
In figure: the circular magnet of 1--; Pipe in 2--; The outer pipe of 3--; 4, the axis of guide; Guide ring in 5--; The inside and outside guide ring of 6--; The outer guide ring of 7--; The circular bearing post of 8--; The 9--contiguous block; The 10--bearing; The 11--vent; 12-round pole plate
Embodiment
Basic structure of the present utility model is: a kind of double-layer circular cast axial force eddy current damper, and it comprises integral body and lower integral body; Described upper integral body comprises interior pipe 2, outer pipe 3 and link 9, wherein in pipe 2 and double-deck pipe of the nested formation of outer pipe 3, interior pipe 2 upper ends are connected with link 9 bottoms; Described lower integral body comprises circular magnet 1, round pole plate 12, circular bearing post 8 and bearing 10, circular magnet 1 Shang Xia two ends all fixedly be coated with area be greater than circular magnet 1 and with the discontiguous round pole plate 12 of interior pipe 2, lower end round pole plate 12 is fixed on circular bearing post 8 tops, and bearing 10 is connected with circular bearing post 8 bottoms; Between described upper integral body and circular bearing post 8, be provided with guide structure, described upper integral body through described guide structure can be relatively circular the slip done along interior pipe 2 axial directions of bearing post 8; Described outer pipe 3 and round pole plate 12 are made for soft iron; Described interior pipe 2 becomes for copper; Described circular bearing post 8 is made for stainless steel.
Fig. 3 is the embodiment of the utility model while only being provided with outer guide structure: on the basis of basic structure, guide structure is set to outer guide structure, namely on the round pole plate 12 on circular magnet 1 top, fix inside and outside guide ring 6, the inwall of interior pipe 2 can slide along the periphery wall of guide ring inside and outside this 6; The bottom of interior pipe 2 is fixed with outer guide ring 7, and the inner ring wall of this outer guide ring 7 can slide along the outer wall of circular bearing post 8; Inside and outside guide ring 6 and outer guide ring 7 are provided with the ventilation breach, guarantee the pipe inside and outside air pressure balance; Described outer guide ring 7 is made for stainless steel; Described inside and outside guide ring 6 is made for teflon.
Embodiment when Fig. 4 only is provided with interior guide structure for the utility model: on the basis of basic structure, guide structure is set to interior guide structure, namely on the round pole plate 12 on circular magnet 1 top, fix inside and outside guide ring 6, the inwall of interior pipe 2 can slide along the periphery wall of guide ring inside and outside this 6; Be that hollow-core construction and circular bearing post 8 tops that are provided with the vent 11 that guarantees air pressure balance arrange interior guide ring 5; The axis of guide 4 that top is fixedly connected with described link 9 bottoms passes the guiding axis hole on the circular pole plate 12 in inside and outside guide ring 6, circular magnet 1 and two ends thereof, interior guide ring 5 successively, and the described axis of guide 4 can slide in described guiding axis hole; Inside and outside guide ring 6 is provided with the ventilation breach, guarantees the pipe inside and outside air pressure balance; The described axis of guide 4 and interior guide ring 5 are made for stainless steel; Described inside and outside guide ring 6 is made for teflon.
Embodiment when Fig. 5 is provided with inside and outside guide structure simultaneously for the utility model: on the basis of basic structure, guide structure is set to inside and outside guide structure, namely on the round pole plate 12 on circular magnet 1 top, fix inside and outside guide ring 6, the inwall of interior pipe 2 can slide along the periphery wall of guide ring inside and outside this 6; The bottom of interior pipe 2 is fixed with outer guide ring 7, and the inner ring wall of this outer guide ring 7 can slide along the outer wall of circular bearing post 8; Be that hollow-core construction and circular bearing post 8 tops that are provided with the vent 11 that guarantees air pressure balance arrange interior guide ring 5; The axis of guide 4 that top is fixedly connected with described link 9 bottoms passes the guiding axis hole on the circular pole plate 12 in inside and outside guide ring 6, circular magnet 1 and two ends thereof, interior guide ring 5 successively, and the described axis of guide 4 can slide in described guiding axis hole; Inside and outside guide ring 6 and outer guide ring 7 are provided with the ventilation breach, guarantee the pipe inside and outside air pressure balance; The described axis of guide 4, interior guide ring 5 and outer guide ring 7 are made for stainless steel; Described inside and outside guide ring 6 is made for polytetrafluoroethylmaterial material.
In above-mentioned three embodiments, be equipped with ball pivot on link 9, bearing 10 is steel horizontal slip bearing.
In above-mentioned three embodiments, circular magnet 1 and round pole plate 12 can be a plurality of, by round pole plate 12, the circular magnet 1 of N-S, round pole plate 12, the circular magnet 1 of S-N, round pole plate 12, the circular magnet 1 of N-S, round pole plate 12 ... order series connection.
Working condition of the present utility model is: such as the damper with in any one embodiment suppresses certain bridge girder vibration.During the vibration of this bridge, vertical Relative Vibration displacement is arranged between bridge tower and girder, change simultaneously very slowly along bridge to displacement and vertical displacement, amplitude all is greater than vibration displacement.Therefore the upper end contiguous block of damper is connected to eliminate the additional force that girder rotates generation with girder by ball pivot, and lower end bearing, by can with bridge tower, being connected along the slide rail of bridge to horizontal slip, moves the unfavorable constraint of generation again with the elimination of level off-position.The stroke of damper moves and adds the peak swing design by vertical maximum off-position, does not therefore establish buffer.Because there is good power supply supply condition at this place, circular magnet adopts electromagnet to obtain large damping force and to realize intelligent control.When the relative bridge tower vertical motion of girder, axial Relative Vibration occurs in two integral body up and down of damper, and the magnetic line of force of interior copper pipe incising circular magnet produces eddy current effect, and damping force is opposite with direction of vibration all the time, can effectively suppress the girder vibration.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. double-layer circular cast axial force eddy current damper, comprise integral body and lower integral body, it is characterized in that: described upper integral body comprises interior pipe (2), outer pipe (3) and link (9), double-deck pipe of interior pipe (2) and the nested formation of outer pipe (3) wherein, interior pipe (2) upper end is connected with link (9) bottom; Described lower integral body comprises circular magnet (1), round pole plate (12), circular bearing post (8) and bearing (10), the upper and lower two ends of circular magnet (1) all fixedly be coated with area be greater than circular magnet (1) and with the discontiguous round pole plate of interior pipe (2) (12), lower end round pole plate (12) is fixed on circular bearing post (8) top, and bearing (10) is connected with circular bearing post (8) bottom; Between described upper integral body and circular bearing post (8), be provided with guide structure, described upper integral body can be done the slip along interior pipe (2) axial direction by relatively circular bearing post (8) through described guide structure; Described outer pipe (3) and round pole plate (12) are made for permeability magnetic material; Described interior pipe (2) is for to make every nonmagnetic electrically conductive material; Described circular bearing post (8) is made for NULL.
2. double-layer circular cast axial force eddy current damper according to claim 1, it is characterized in that: described guide structure is outer guide structure, namely at the upper fixing inside and outside guide ring (6) of the round pole plate (12) on circular magnet (1) top, the inwall of interior pipe (2) can slide along the periphery wall of guide ring inside and outside this (6); The bottom of interior pipe (2) is fixed with outer guide ring (7), and the inner ring wall of this outer guide ring (7) can slide along the outer wall of circular bearing post (8); Inside and outside guide ring (6) and outer guide ring (7) are provided with the ventilation breach; Described outer guide ring (7) is made for NULL; Described inside and outside guide ring (6) is for to make every magnetic high molecular abrasion-proof material.
3. double-layer circular cast axial force eddy current damper according to claim 1, it is characterized in that: described guide structure is interior guide structure, namely at the upper fixing inside and outside guide ring (6) of the round pole plate (12) on circular magnet (1) top, the inwall of interior pipe (2) can slide along the periphery wall of guide ring inside and outside this (6); Be that hollow-core construction and circular bearing post (8) top that is provided with the vent (11) that guarantees air pressure balance arrange interior guide ring (5); The axis of guide (4) that top is fixedly connected with described link (9) bottom passes the guiding axis hole on the circular pole plate (12) in inside and outside guide ring (6), circular magnet (1) and two ends thereof, interior guide ring (5) successively, and the described axis of guide (4) can slide in described guiding axis hole; Inside and outside guide ring (6) is provided with the ventilation breach; The described axis of guide (4) and interior guide ring (5) are made for NULL; Described inside and outside guide ring (6) is made for the high molecular abrasion-proof material.
4. double-layer circular cast axial force eddy current damper according to claim 1, it is characterized in that: described guide structure is inside and outside guide structure, namely at the upper fixing inside and outside guide ring (6) of the round pole plate (12) on circular magnet (1) top, the inwall of interior pipe (2) can slide along the periphery wall of guide ring inside and outside this (6); The bottom of interior pipe (2) is fixed with outer guide ring (7), and the inner ring wall of this outer guide ring (7) can slide along the outer wall of circular bearing post (8); Be that hollow-core construction and circular bearing post (8) top that is provided with the vent (11) that guarantees air pressure balance arrange interior guide ring (5); The axis of guide (4) that top is fixedly connected with described link (9) bottom passes the guiding axis hole on the circular pole plate (12) in inside and outside guide ring (6), circular magnet (1) and two ends thereof, interior guide ring (5) successively, and the described axis of guide (4) can slide in described guiding axis hole; Inside and outside guide ring (6) and outer guide ring (7) are provided with the ventilation breach; The described axis of guide (4), interior guide ring (5) and outer guide ring (7) are made for NULL; Described inside and outside guide ring (6) is for to make every magnetic high molecular abrasion-proof material.
5. double-layer circular cast axial force eddy current damper according to claim 4, it is characterized in that: described outer pipe (3) and round pole plate (12) are made for electrician's soft iron; Described interior pipe (2) becomes for copper; The described axis of guide (4), interior guide ring (5), outer guide ring (7) and circular bearing post (8) are made for stainless steel; Described inside and outside guide ring (6) is made for teflon.
6. according to the described double-layer circular cast of arbitrary claim axial force eddy current damper in claim 1 to 4, it is characterized in that: described circular magnet (1) is the circular electric magnet.
7. according to the described double-layer circular cast of arbitrary claim axial force eddy current damper in claim 1 to 4, it is characterized in that: described circular magnet (1) and round pole plate (12) are for a plurality of, by the order series connection of round pole plate (12), the circular magnet (1) of N-S, round pole plate (12), the circular magnet (1) of S-N, round pole plate (12), the circular magnet (1) of N-S, round pole plate (12).
8. according to the described double-layer circular cast of arbitrary claim axial force eddy current damper in claim 1 to 4, it is characterized in that: link (9) is provided with ball pivot, and bearing (10) is steel horizontal slip bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202842749U CN203308994U (en) | 2013-05-23 | 2013-05-23 | Double-layer circular tube type axial force eddy current damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202842749U CN203308994U (en) | 2013-05-23 | 2013-05-23 | Double-layer circular tube type axial force eddy current damper |
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| CN203308994U true CN203308994U (en) | 2013-11-27 |
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| CN2013202842749U Withdrawn - After Issue CN203308994U (en) | 2013-05-23 | 2013-05-23 | Double-layer circular tube type axial force eddy current damper |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015139404A1 (en) * | 2014-03-21 | 2015-09-24 | 陈政清 | Axial eddy-current damping device based on helical transmission mode |
| CN105402297A (en) * | 2014-08-14 | 2016-03-16 | 香港理工大学 | Magnetic negative stiffness damper |
| CN105805204A (en) * | 2016-03-29 | 2016-07-27 | 石翔 | Passive linear magnetic negative stiffness device |
| CN106402227A (en) * | 2016-10-13 | 2017-02-15 | 同济大学 | Intelligent eddy current sensing and damping device |
| CN107034622A (en) * | 2017-05-31 | 2017-08-11 | 青岛海尔智能技术研发有限公司 | Gimbal, control method and washing machine for gimbal |
| CN111006647A (en) * | 2019-12-25 | 2020-04-14 | 中国电建集团中南勘测设计研究院有限公司 | Lifting type invisible observation pier |
| CN111102970A (en) * | 2019-12-25 | 2020-05-05 | 中国电建集团中南勘测设计研究院有限公司 | Lifting invisible observation pier |
-
2013
- 2013-05-23 CN CN2013202842749U patent/CN203308994U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015139404A1 (en) * | 2014-03-21 | 2015-09-24 | 陈政清 | Axial eddy-current damping device based on helical transmission mode |
| CN105402297A (en) * | 2014-08-14 | 2016-03-16 | 香港理工大学 | Magnetic negative stiffness damper |
| CN105805204A (en) * | 2016-03-29 | 2016-07-27 | 石翔 | Passive linear magnetic negative stiffness device |
| CN106402227A (en) * | 2016-10-13 | 2017-02-15 | 同济大学 | Intelligent eddy current sensing and damping device |
| CN107034622A (en) * | 2017-05-31 | 2017-08-11 | 青岛海尔智能技术研发有限公司 | Gimbal, control method and washing machine for gimbal |
| CN107034622B (en) * | 2017-05-31 | 2020-10-02 | 青岛海尔智能技术研发有限公司 | Balance ring, control method for balance ring and washing machine |
| CN111006647A (en) * | 2019-12-25 | 2020-04-14 | 中国电建集团中南勘测设计研究院有限公司 | Lifting type invisible observation pier |
| CN111102970A (en) * | 2019-12-25 | 2020-05-05 | 中国电建集团中南勘测设计研究院有限公司 | Lifting invisible observation pier |
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