CN102705414A - Cylindrical electromagnetic damper - Google Patents
Cylindrical electromagnetic damper Download PDFInfo
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- CN102705414A CN102705414A CN2012101613973A CN201210161397A CN102705414A CN 102705414 A CN102705414 A CN 102705414A CN 2012101613973 A CN2012101613973 A CN 2012101613973A CN 201210161397 A CN201210161397 A CN 201210161397A CN 102705414 A CN102705414 A CN 102705414A
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- permanent magnet
- annular permanent
- thin walled
- walled cylinder
- tightening nut
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Abstract
The invention discloses a cylindrical electromagnetic damper which comprises a centre shaft, wherein n groups of annular permanent magnet stacks with opposite same polarities are sequentially arranged along an axial direction on the outer wall of the centre shaft; n is an integer more than or equal to 2; ferromagnetic gaskets are arranged among the annular permanent magnet stacks; the two ends of the annular permanent magnet stacks along the axial direction of the centre shaft are locked on the centre shaft through a first lock nut and a second lock nut; outer thin wall cylinders are arranged outside the annular permanent magnet stacks, and a gap a gap is arranged between the outer thin wall cylinders and the annular permanent magnet stacks, and a first cover body and a second cover body are fixed on the two ends of the outer thin wall cylinders and in the radical direction of the outer wall of the centre shaft. Preferably, inner thin wall cylinders are arranged between the annular permanent magnet stacks and the outer thin wall cylinders, wherein the inner thin wall cylinders are fixed with the two ends of the inner thin wall cylinders and the center shaft; a plurality of lug bosses at equal intervals are arranged on the outer walls of the inner thin wall cylinders in the axial direction, and a magnetic coil is wound among the lug bosses. By adopting the structure of the cylindrical electromagnetic damper disclosed by the invention, higher electromechanical coupling characteristics as well as vibration isolating and buffering characteristics are provided, and the advantages of simple structure, large operation force, convenience for use, low cost and wide application range are achieved.
Description
Technical field
The present invention relates to a kind of damper, be specifically related to a kind of drum type electromagnetic damper.
Background technique
When mechanical structure receives external load function, will produce vibration.People's vibration capable of using is carried, screening, and fragmentation, monitoring, diagnosings etc. can facilitate to many aspects such as life of industry, agricultural, national defence and people like this.Yet in technical fields such as high, precision and frontiers, the mechanical vibration meeting causes structural damage to lose efficacy, precise decreasing, the lost of life and casualty accident occurs.For example, during rocket launching, the structural damage that impulsive load may cause, launch accuracy reduces; During automobile running, the coarse injustice on road surface reduces its travelling comfort; The vibration of instrument and apparatus can cause its measuring accuracy etc.
Damper can increase the damping constant of structure on certain degree, therefore, but be widely used in that structure is shaken, in the vibration damping.(like electricity (magnetic) rheo-material, piezoelectric material, magnetostriction materials, marmem, electromagnetic structure etc.) have electromechanical coupling characteristics preferably because smart material and structure, but have been widely used in that structure is shaken, in the vibration damping.The electromagnetic damping structure has had the master who is applied to vibrate, the correlation theory in the Passive Control, and in recent years, the performance of permanent magnet has also obtained certain development; It is relatively easy to design the damper of realizing functional requirement, yet, satisfying under the situation of usage requirement; Make the electromechanical coupling characteristics of electromagnetic damper big; Structure is little, and can be applicable to multiple occasion, and the comparison difficulty just seems.
Summary of the invention
In order to overcome the problem that above-mentioned existing technology exists, the object of the present invention is to provide a kind of drum type electromagnetic damper, adopt structure of the present invention to have higher electromechanical coupling characteristics; Can be used for vibration isolation, workplaces such as buffering, and have simple in structure; It is big to be used as power; Easy to use, cost is low, the characteristics of applied range.
To achieve these goals, the technological scheme of the present invention's employing is:
A kind of drum type electromagnetic damper; Comprise central shaft 1; Central shaft 1 outer wall axially be disposed with n group homopolarity over against annular permanent magnet heap 3, said n be the integer more than or equal to 2, said annular permanent magnet is piled 3 and is provided with ferromagnetism pad 12; Said annular permanent magnet heap 3 is locked on the central shaft 1 through first tightening nut 10 and second tightening nut 15 along central shaft 1 axial two ends; Thin walled cylinder 5 outside said annular permanent magnet heap 3 is outside equipped with, and leave the gap between outer thin walled cylinder 5 and the annular permanent magnet heap 3, thin walled cylinder 5 two ends and central shaft 1 outer wall radially are fixed with first lid 9 and second lid 16 outside.
Be provided with the interior thin walled cylinder 6 that two ends and central shaft 1 are fixed at said annular permanent magnet heap 3 and outer 5 of thin walled cylinders; And between annular permanent magnet heap 3 and interior thin walled cylinder 6, leave the gap; Thin walled cylinder 6 outer walls have a plurality of equally spaced boss 13 vertically in said, are wound with electromagnetic coil 4 13 of boss.
When structure need be born elastic anchorage force, be respectively arranged with first spring 7 and second spring 2 at said first tightening nut 10 and second tightening nut 15 and first lid 9 and 16 of second lids.
Said first spring 7 is identical with the stiffness coefficient of second spring 2.
Be respectively arranged with first pad 11 and second pad 14 at the two ends of said annular permanent magnet heap 3 and first tightening nut 10 and 15 of second tightening nuts, the diameter of said first pad 11 and second pad 14 is greater than the diameter of first tightening nut 10 and second tightening nut 15.
The material of said outer thin walled cylinder 5 is a ferromagnetic substance, and the material of said central shaft 1 is the non-magnetic material.
The gap that said interior thin walled cylinder 6 and annular permanent magnet heap are 3 is 0.5～3.0mm.
The present invention compares with existing technology, has following advantage:
1, because annular permanent magnet is piled 3 homopolarities over against setting, the radially magnetic induction intensity of 3 in two groups of annular permanent magnets heap is increased, and the gap of 5 of annular permanent magnet heap 3 and outer thin walled cylinders is very little, can improve the electromechanical coupling characteristics of damper of the present invention like this; The number that can adjust electromagnetic coil 4 is as required adjusted the damping force of damper of the present invention;
2, thin walled cylinder 6 in said annular permanent magnet heap 3 and outer 5 of thin walled cylinders are provided with; thin walled cylinder 6 outer walls have a plurality of equally spaced boss 13 vertically; be wound with electromagnetic coil 4 13 of boss; further improved the electromechanical coupling characteristics of damper of the present invention, and the electromagnetic coil 4 corresponding closed-loop path of composition that can join with different electric elementss improve controllability of the present invention and practicability;
3, damper of the present invention can be as required; Be respectively arranged with first spring 7 and second spring 2 at first tightening nut 10 and second tightening nut 15 and first lid 9 and 16 of second lids; Use the structure of damper of the present invention can bear elastic anchorage force, can be used as a kind of vibration isolation or buffering and hit element; The present invention's first spring 7 is identical with the stiffness coefficient of second spring 2, for the stability of the dynamics of structure provides assurance;
4, the present invention is provided with first pad 11 and second pad 14 at the two ends of annular permanent magnet heap 3 with first tightening nut 10 and 15 of second tightening nuts, has guaranteed that annular permanent magnet piles 3 Location accuracy;
5, the material of central shaft 1 of the present invention is the non-magnetic material; The material of outer thin walled cylinder 5 is a ferromagnetic substance; Reduced magnetic field thin walled cylinder 5 magnetic leakage outward outside, and thin walled cylinder 5 forms foucault currents outside, can improve the electromechanical coupling characteristics of damper of the present invention;
6, the present invention is simple in structure, and it is big to be used as power, and easy to use, cost is low, applied range.
Description of drawings
Accompanying drawing is a sectional drawing of the present invention.
Embodiment
Below in conjunction with accompanying drawing to structural principle of the present invention and working principle further explain.
Of accompanying drawing; A kind of drum type electromagnetic damper of the present invention; Comprise central shaft 1; Central shaft 1 outer wall axially be disposed with n group homopolarity over against annular permanent magnet heap 3, said n be the integer more than or equal to 2, said annular permanent magnet is piled 3 and is provided with ferromagnetism pad 12; Said annular permanent magnet heap 3 is locked on the central shaft 1 through first tightening nut 10 and second tightening nut 15 along central shaft 1 axial two ends; Thin walled cylinder 5 outside said annular permanent magnet heap 3 is outside equipped with, and leave the gap between outer thin walled cylinder 5 and the annular permanent magnet heap 3, thin walled cylinder 5 two ends and central shaft 1 outer wall radially are provided with first lid 9 and second lid of fixing through bolt 8 16 outside.
Preferably; Be provided with the interior thin walled cylinder 6 that two ends and central shaft 1 are fixed at said annular permanent magnet heap 3 and outer 5 of thin walled cylinders; And between annular permanent magnet heap 3 and interior thin walled cylinder 6, leave the gap; Thin walled cylinder 6 outer walls have a plurality of equally spaced boss 13 vertically in said, are wound with electromagnetic coil 4 13 of boss.
When structure need be born elastic anchorage force, be respectively arranged with the first identical spring 7 of stiffness coefficient and second spring 2 with second tightening nut 15 and first lid 9 and 16 of second lids at said first tightening nut 10.
Preferably; Be respectively arranged with first pad 11 and second pad 14 at the two ends of said annular permanent magnet heap 3 and first tightening nut 10 and 15 of second tightening nuts, the diameter of said first pad 11 and second pad 14 is greater than the diameter of first tightening nut 10 and second tightening nut 15.
Preferably, the material of said outer thin walled cylinder 5 is a ferromagnetic substance, and the material of said central shaft 1 is the non-magnetic material.
Preferably, to pile 3 gap be 0.5～3.0mm for thin walled cylinder 6 and annular permanent magnet in said.
Working principle of the present invention is: during use, join with an end of central shaft 1 with by control structure, have interior threaded hole at the center of first lid 9, itself and vibration source are joined, then total constitutes closed loop.When producing relative movement between outer thin walled cylinder 5 and the central shaft 1, outer thin walled cylinder 5 inside will produce foucault current, thereby produce the damping force opposite with moving direction; When being provided with electromagnetic coil 4 in the damper structure; Can a certain dissipative cell or energy-storage travelling wave tube be connected with electromagnetic coil 4 and close and the loop with formation, when producing relative movement between annular permanent magnet heap 3 and the electromagnetic coil 4, the two ends of each electromagnetic coil 4 can produce induction electromotive force; And in corresponding closed-loop path, produce induction current; Like this, according to the Ampere force theorem, can produce the Ampere force opposite between electromagnetic coil 4 and the annular permanent magnet heap 3 with moving direction.Like this, the energy of vibration will convert electric energy to, in dissipation and the corresponding circuit, thereby realizes vibration control.
Claims (7)
1. drum type electromagnetic damper; It is characterized in that: comprise central shaft (1); Central shaft (1) outer wall axially be disposed with n group homopolarity over against annular permanent magnet heap (3); Said n is the integer more than or equal to 2; Be provided with ferromagnetism pad (12) between said annular permanent magnet heap (3), said annular permanent magnet heap (3) axially is locked on the central shaft (1) through first tightening nut (10) and second tightening nut (15) at two ends along central shaft (1), thin walled cylinder (5) outside said annular permanent magnet heap (3) is outside equipped with; And leave the gap between outer thin walled cylinder (5) and the annular permanent magnet heap (3), thin walled cylinder (5) two ends and central shaft (1) outer wall radially are fixed with first lid (9) and second lid (16) outside.
2. drum type electromagnetic damper according to claim 1; It is characterized in that: said annular permanent magnet heap (3) with outside be provided with the interior thin walled cylinder (6) that two ends and central shaft (1) are fixed between thin walled cylinder (5); And between annular permanent magnet heap (3) and interior thin walled cylinder (6), leave the gap; Thin walled cylinder (6) outer wall has a plurality of equally spaced boss (13) vertically in said, between boss (13), is wound with electromagnetic coil (4).
3. drum type electromagnetic damper according to claim 1 and 2; It is characterized in that: when structure need be born elastic anchorage force, between said first tightening nut (10) and second tightening nut (15) and first lid (9) and second lid (16), be respectively arranged with first spring (7) and second spring (2).
4. drum type electromagnetic damper according to claim 3 is characterized in that: said first spring (7) is identical with the stiffness coefficient of second spring (2).
5. drum type electromagnetic damper according to claim 1 and 2; It is characterized in that: between the two ends of said annular permanent magnet heap (3) and first tightening nut (10) and second tightening nut (15), be respectively arranged with first pad (11) and second pad (14), the diameter of said first pad (11) and second pad (14) is greater than the diameter of first tightening nut (10) and second tightening nut (15).
6. drum type electromagnetic damper according to claim 1 and 2 is characterized in that: the material of said outer thin walled cylinder (5) is a ferromagnetic substance, and the material of said central shaft (1) is the non-magnetic material.
7. drum type electromagnetic damper according to claim 2 is characterized in that: the gap in said between thin walled cylinder (6) and annular permanent magnet heap (3) is 0.5～3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101613973A CN102705414A (en) | 2012-05-23 | 2012-05-23 | Cylindrical electromagnetic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101613973A CN102705414A (en) | 2012-05-23 | 2012-05-23 | Cylindrical electromagnetic damper |
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| CN102705414A true CN102705414A (en) | 2012-10-03 |
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| CN2012101613973A Pending CN102705414A (en) | 2012-05-23 | 2012-05-23 | Cylindrical electromagnetic damper |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041938A (en) * | 2015-08-30 | 2015-11-11 | 潘秀兰 | Vibration reducer of electric vehicle |
| CN105156577A (en) * | 2015-09-07 | 2015-12-16 | 西安交通大学 | Overdamped vibration isolator capable of generating negative stiffness through inclined magnets |
| CN105511513A (en) * | 2015-11-24 | 2016-04-20 | 西安空间无线电技术研究所 | Electromagnetic damping type vibrations controlling apparatus of spaceborne equipment |
| CN107061587A (en) * | 2017-05-24 | 2017-08-18 | 南京理工大学 | A kind of axial current vortex system of double-deck permanent-magnet type moves back counterrecoil mechanism |
| CN108019452A (en) * | 2017-12-29 | 2018-05-11 | 浙江理工大学 | A kind of half actively controllable linear Stiffness electromagnetism vibration isolator |
| WO2021135069A1 (en) * | 2019-12-31 | 2021-07-08 | 中科振声（苏州）电子科技有限公司 | Composite electromagnetic type dynamic vibration absorber |
| CN113819184A (en) * | 2021-10-09 | 2021-12-21 | 浙江大学 | Electromagnetic damper and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01123707A (en) * | 1987-11-07 | 1989-05-16 | Toyota Motor Corp | Constant weight feeding equipment of particulate and multi-color automatic feeding equipment of masterbatch |
| JPH01203707A (en) * | 1988-02-06 | 1989-08-16 | Nhk Spring Co Ltd | Spring device |
| JPH0377880A (en) * | 1989-08-21 | 1991-04-03 | San Ei Chem Ind Ltd | Method for dissolving water-insoluble flavonoid |
| JPH09177880A (en) * | 1995-12-27 | 1997-07-11 | Kawasaki Heavy Ind Ltd | Electromagnetic damper |
| CN2906124Y (en) * | 2006-04-26 | 2007-05-30 | 刘宗锋 | Sleeve winding type electromagnetic generation damper |
| CN102022473A (en) * | 2010-12-20 | 2011-04-20 | 北京航空航天大学 | Ultra wideband adjustable electromagnetic damping vibration isolating device |
| CN202579783U (en) * | 2012-05-23 | 2012-12-05 | 西安交通大学 | Novel electromagnetic damper |
-
2012
- 2012-05-23 CN CN2012101613973A patent/CN102705414A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01123707A (en) * | 1987-11-07 | 1989-05-16 | Toyota Motor Corp | Constant weight feeding equipment of particulate and multi-color automatic feeding equipment of masterbatch |
| JPH01203707A (en) * | 1988-02-06 | 1989-08-16 | Nhk Spring Co Ltd | Spring device |
| JPH0377880A (en) * | 1989-08-21 | 1991-04-03 | San Ei Chem Ind Ltd | Method for dissolving water-insoluble flavonoid |
| JPH09177880A (en) * | 1995-12-27 | 1997-07-11 | Kawasaki Heavy Ind Ltd | Electromagnetic damper |
| CN2906124Y (en) * | 2006-04-26 | 2007-05-30 | 刘宗锋 | Sleeve winding type electromagnetic generation damper |
| CN102022473A (en) * | 2010-12-20 | 2011-04-20 | 北京航空航天大学 | Ultra wideband adjustable electromagnetic damping vibration isolating device |
| CN202579783U (en) * | 2012-05-23 | 2012-12-05 | 西安交通大学 | Novel electromagnetic damper |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041938A (en) * | 2015-08-30 | 2015-11-11 | 潘秀兰 | Vibration reducer of electric vehicle |
| CN105156577A (en) * | 2015-09-07 | 2015-12-16 | 西安交通大学 | Overdamped vibration isolator capable of generating negative stiffness through inclined magnets |
| CN105156577B (en) * | 2015-09-07 | 2017-03-29 | 西安交通大学 | A kind of employing tilting magnet produces the super damping isolator of negative stiffness |
| CN105511513A (en) * | 2015-11-24 | 2016-04-20 | 西安空间无线电技术研究所 | Electromagnetic damping type vibrations controlling apparatus of spaceborne equipment |
| CN107061587A (en) * | 2017-05-24 | 2017-08-18 | 南京理工大学 | A kind of axial current vortex system of double-deck permanent-magnet type moves back counterrecoil mechanism |
| CN108019452A (en) * | 2017-12-29 | 2018-05-11 | 浙江理工大学 | A kind of half actively controllable linear Stiffness electromagnetism vibration isolator |
| CN108019452B (en) * | 2017-12-29 | 2019-06-28 | 浙江理工大学 | A kind of half actively controllable linear Stiffness electromagnetism vibration isolator |
| WO2021135069A1 (en) * | 2019-12-31 | 2021-07-08 | 中科振声（苏州）电子科技有限公司 | Composite electromagnetic type dynamic vibration absorber |
| CN113819184A (en) * | 2021-10-09 | 2021-12-21 | 浙江大学 | Electromagnetic damper and application thereof |
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Application publication date: 20121003 |