CN109488712A - A kind of eddy current damper - Google Patents
A kind of eddy current damper Download PDFInfo
- Publication number
- CN109488712A CN109488712A CN201811620865.2A CN201811620865A CN109488712A CN 109488712 A CN109488712 A CN 109488712A CN 201811620865 A CN201811620865 A CN 201811620865A CN 109488712 A CN109488712 A CN 109488712A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- permanent magnet
- conductor
- axis
- magnet array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 88
- 230000033001 locomotion Effects 0.000 claims abstract description 30
- 238000005192 partition Methods 0.000 claims description 11
- 230000005389 magnetism Effects 0.000 claims description 5
- 238000001727 in vivo Methods 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 42
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000721153 Chloranthus japonicus Species 0.000 description 1
- 241000227287 Elliottia pyroliflora Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of eddy current dampers, including permanent magnet array, cylinder body, conductor and at least one axis, the two sides of the cylinder body are provided with side plate, the axis is arranged on the middle cross section of the cylinder body and at least one end by side plate is pierced by cylinder body, the permanent magnet array by enclose set of permanent magnets on the shaft at, and the permanent magnet array can do movement in the same direction with axis, the conductor is arranged in cylinder body medial surface, the conductor is divided at least two valves around the permanent magnet array together with cylinder body, the gap 0-100mm is set between each valve conductor and permanent magnet array.The damper can be realized the continuous electrodeless adjustment of gapped magnetic field, accurately adjust damping force, and the damper makes full use of magnetic field energy, save permanent magnet material, compact-sized, flexible arrangement, and abrasion is less, and maintenance and repair is convenient.
Description
Technical field
The present invention relates to building structure antivibration areas, in particular to a kind of eddy current damper.
Background technique
The characteristics of engineering structure or mechanical equipment are because of self structure generates vibration under the effect of external exciting force.Work as excitation
When power frequency reaches structural natural frequencies, equipment or engineering structure can lead to failure because of resonance, or even cause serious consequence.It adjusts
Humorous mass damper (TMD) is connected with controlled structures, and the vibration of controlled structures is eliminated or weakened using antiresonance.TMD is extensive
It applies in building and science of bridge building, reduces building or bridge under wind and Pedestrian Load due to the acceleration of resonance effects generation
Degree, displacement and load.TMD by quality, rigidity and damping three parts unit constitute, by adjusting these three units parameter with by
The relationship of the quality and the natural frequency of vibration of controlling structure obtains optimal damping efficiency.The designing quality and self-vibration of usual controlled structures
Frequency is inconsistent with actual conditions, and TMD needs further adjust its parameter according to the actual situation.
Traditional TMD includes the mass unit being made of steel, and the rigidity unit and liquid being made of spring or hoist cable glue
Stagnant damper.Fluid viscous damper used in traditional TMD has the following problems: 1) damping force can not be adjusted after installing；2)
Sealing ring is easy to wear when frequent operation, leads to oil leak；3) because of sealing ring banding piston rod, cause frictional force larger, damper is not
Easily starting；4) energy-dissipating property is poor under micro-vibration；5) temperature change is affected to the performance of damping.
It currently, eddy current damper is replaced fluid viscous damper to apply on TMD by technical staff, but is relatively mostly unilateral side
Board-like eddy current damper.The long-range navigation that eddy current damper is generated by the relative motion between permanent magnet and the conductor of one side
Hereby power provides damping force, and there are gap (gapped magnetic field) specially between permanent magnet and conductor, the relative motion of the two makes permanent magnetism
The magnetic field intercepts conductor of body generates induction current vortex in conductor, incudes the electromagnetic field of current vortex with magnetic field of permanent magnet on the contrary, and producing
The damping force of the raw relative motion for hindering permanent magnet and conductor.Damping force is drastically reduced with the increase of gapped magnetic field.It is existing
The mostly unilateral board-like eddy current damper of eddy current damper, such as patent 2013100804643 and 2016108706498, forever
The plane or curved surface that magnet array is constituted are parallel with the plane or curved surface that conductor is constituted and there are gaps, generate in plane or curved surface
On relative motion.
However, there are the following problems for board-like eddy current damper: 1) occurring perpendicular to permanent magnet and conductor plane or curved surface
Gapped magnetic field is difficult to ensure when the vibration in direction, and damping force is unstable, and permanent magnet and conductor hold in the lesser situation of gapped magnetic field
Easily collision；2) when the area of the permanent magnet of needs and conductor is larger, due to processing installation error and deformation induced by gravity, lead to magnetic field
Gap is difficult to ensure that damping force deviation is difficult to control；3) due to problem 1) and 2), gapped magnetic field can not accomplish very little, magnetic field energy
It is not high to measure utilization rate；4) area is larger is not easy to arrange；5) magnetic field of permanent magnet side is only utilized, the other side, which is not provided with, leads
Body, magnetic field utilization rate be not high.
In order to overcome the problems, such as board-like eddy current damper, scientific research technical staff develops eddy current damper.Such as specially
Benefit 201610895139 provides a kind of intelligent current vortex sensing damping unit, and the electro-magnetic shielding cover center of the device plugs piston
Bar, piston rod bottom end connect permanent magnet unit, fixed copper conductor inside electro-magnetic shielding cover, copper conductor bottom fixed permanent magnet, piston
Relative displacement occurs in the movement of piston rod for the permanent magnet unit of bar bottom end and the permanent magnet of copper conductor bottom, generates damping force.
Patent 2014104755284 discloses a kind of axial eddy current damper of the large size using worm drive production, packet
Transmission component and eddy-current damping generator are included, transmission component includes secondary worm drive and the stator made of permeability magnetic material, turns
Son；The screw rod of worm drive pair passes through dampener body, and stator is arranged on upper and lower ring flange, and rotor includes outer rotor and bottom
End is equipped with the internal rotor of lower mounting flange, and one or more eddy-current damping generators are equipped between stator and outer rotor.It should
Device uses screw-driven, and axial movement in the same direction is changed into pivoting movement, but because frictional force causes greatly startup power to increase,
Mechanical wear is serious.
Patent CN207437653U discloses rotary-type axial eddy current damper, the inner cylinder of the damper in a kind of A seating
It can be rotated in outer cylinder, multiple groups eddy-current damping component is along inner cylinder or the axial arranging of outer cylinder, the line of eddy-current damping component
Coil assembly is wound on its outer wall along the axial direction of inner cylinder, magnetic piece being axially set on its inner wall along outer cylinder of magnet assembly.
The device is also the movement that magnetic piece is realized by the way of internal rotating, improves magnetic field utilization rate.
Currently, eddy current damper is less applied to the research of TMD, the construction of eddy current damper is more complicated unsuitable
Large-scale popularization application, majority use internal rotating mode, and frictional force and abrasion are than more serious, and structure is complicated, and maintenance and repair compares
Difficulty, and damping force can not be adjusted according to the debugging demand of TMD.
Summary of the invention
In order to solve the above technical problems, the damper can guarantee forever the present invention provides a kind of eddy current damper
Gapped magnetic field between magnet and conductor stablize it is controllable and can electrodeless adjustment, maximally utilize magnetic field energy and conductor；
The damper may be mounted between the mass block of TMD and controlled structures on any required direction for providing damping force, can also
Two meetings for being mounted on the structures such as building, bridge or machinery generate between the node of relative motion.
The eddy current damper carries out piston motion with the axis with permanent magnet array in the cylinder body of built-in conductor, makes
Permanent magnet and conductor relative motion simultaneously generate eddy-current damping power, at the same conductor together with cylinder body have divide valve to design, pass through cylinder body
On screw adjust with conductor cylinder body and permanent magnet gap, and then adjust damping force.
A kind of eddy current damper provided by the invention, including permanent magnet array, cylinder body, conductor and at least one axis,
It is characterized in that, the two sides of the cylinder body are provided with side plate, and the axis is arranged on the middle cross section of the cylinder body and extremely
Few one end is pierced by cylinder body by side plate, and the permanent magnet array is by enclosing set of permanent magnets on the shaft at and described
Permanent magnet array can do movement in the same direction with axis, and the conductor is arranged in cylinder body medial surface, and the conductor is divided into together with cylinder body
At least two valves surround the permanent magnet array, and the gap 0-100mm is arranged between each valve conductor and permanent magnet array.
The axis is provided with oscillating bearing by one end that side plate is pierced by cylinder body, and the oscillating bearing band moving axis is done in the same direction
Movement, the other end of oscillating bearing is connected on the component for needing damping force, it is preferred that the mass block that the component is TMD with
Component between controlled structures, the component may be two meetings generation relative motion of the structures such as building, bridge or machinery
Node component.
The both ends of the axis are cased with axle sleeve, close clearance fit between the axis and axle sleeve, and axis passes through axle sleeve and lives
Plug movement, it is preferred that the axle sleeve is the copper bush with self-lubricating function, and the rigidity that can reduce axis and cylinder body rubs, institute
Axle sleeve is stated to be fixed on the side plate by axle sleeve cover board.
Preferably, the axis is not through entire cylinder body, adjustable plate and internal partition in cylinder interior is arranged, and the one of the axis
End is not pierced by the other end of cylinder body across the interior adjustable plate and internal partition.In the specific embodiment of the present invention
In, the axis passes through the interior adjustable plate and internal partition, and is not pierced by the cylinder body other end.
The permanent magnet array is by enclosing several piece set of permanent magnets on the shaft into and the permanent magnet array energy
It is enough to do movement in the same direction with axis；The magnetic pole of the permanent magnet periphery is alternately arranged or homopolarity arrangement, between may exist between permanent magnet
Gap can also be not present in gap；According to required damping force, adjust the size of the permanent magnet, quantity, magnetic pole arrangement mode and
Gap between permanent magnet.The shape of the permanent magnet is selected from shoe, rectangle, circle and polygon.
The permanent magnet array is connected and fixed on the axis by permanent magnet cover board, it is preferred that the permanent magnet battle array
By screw connection, the permanent magnet cover board and axis are connected through a screw thread for column and permanent magnet cover board.
The cylinder body is the shell of the damper, and cylinder body plays a part of to overally support and accommodate to the damper；It is excellent
Choosing, the cylinder body is cylindrical body or cube.
The conductor is located at cylinder body interior sidewall surface, and is connected and fixed with cylinder body, and the cylinder body is together with conductor perpendicular to institute
It states and is divided at least two valves on the section of axis and surrounds the permanent magnet array, i.e., the inside of every valve structure component is conductor, outside
Side is cylinder body, and the conductor of every valve structure component and cylinder body relative position are fixed, between each valve conductor and permanent magnet array
There are the gap 0-100mm, the gap can be adjusted by steady and continuous.
The gap is preferably 0.01-100mm, more preferably 0.1-50mm, more preferably 1-50mm, more preferably 1-
20mm。
The side plate is outer adjustable plate, and the outer adjustable plate is located at the both ends outside cylinder body, can also be with outside the cylinder body
Adjustable plate in being arranged simultaneously, the axis pass through outer adjustable plate and/or interior adjustable plate, and the axle sleeve is fixed on institute by axle sleeve cover board
Outer adjustable plate and/or interior adjustable plate are stated, enables the shaft to that permanent magnet array is driven to do movement in the same direction, it is close between the axis and axle sleeve
Clearance fit.
The damper includes at least one adjusting screw, it is preferred that adjusting screw is arranged on the outer adjustable plate, institute
Stating adjusting screw can also be arranged in simultaneously on the cylinder body vertical with outer adjustable plate；For the adjusting screw being arranged on cylinder body,
Make the cylinder body of point valve together with conductor close to or far from permanent magnet array by rotating adjusting screw, reaches and adjust conductor and permanent magnet
The purpose in gap；For the adjusting screw being arranged on outer adjustable plate, adjusting screw passes through the slotted hole on outer adjustable plate, with cylinder
The threaded hole in body end portion connects, and the position of slotted hole is passed through by changing adjusting screw, keeps the cylinder body of point valve close together with conductor
Or far from permanent magnet array, equally achieve the purpose that adjust conductor and permanent magnetism body space；The variation of conductor and permanent magnetism body space will
Change the damping force that the damper provides.
At least one adjusting screw is provided on the outer adjustable plate, the adjusting screw adjusts conductor and permanent magnet
Gap between array, the adjusting screw can be realized the continuous electrodeless adjustment of gapped magnetic field, accurately adjust damping force.
Preferably, the adjusting screw is symmetrically distributed on the outer adjustable plate, and the number of adjusting screw is even number,
And the no less than described cylinder body divides valve valve number together with conductor, it is preferred that the number of the adjusting screw is 2-8, more preferably
, the number of the adjusting screw is 4-6.
The major diameter direction of the slotted hole is vertical with the direction of the axis, the adjusting screw in the quantity and side plate of slotted hole
Quantity is identical.
Preferably, when the axis is not through cylinder body, the outer adjustable plate is located at the both ends outside cylinder body, the interior adjusting
Plate is located at the end section of the axis of cylinder interior, and the inside of interior adjustable plate is equipped with internal partition, the internal partition resist conductor and with
Cylinder body links together, internal partition on the section perpendicular to the axis have splitted structure, the quantity of the splitted structure with
Cylinder body valve number is identical, plays Auxiliary support and isolation；The axis passes through the axle sleeve of the center of the interior adjustable plate, Gu
The outside of interior adjustable plate is arranged in the axle sleeve cover board of the fixed axle sleeve；The adjusting screw is located on the outer adjustable plate, is adjusted
The perforation of screw is slotted hole, and the adjusting screw on outer adjustable plate passes through the slotted hole on outer adjustable plate, the spiral shell with cylinder ends
Pit connects, and the adjusting screw on the interior adjustable plate of the cylinder body passes through interior adjustable plate, and connect with the threaded hole on internal partition,
The position that the slotted hole is passed through by changing adjusting screw, it is big together with the gap of conductor and permanent magnet array to adjust every valve cylinder body
It is small.
Preferably, a kind of eddy current damper provided by the invention, including permanent magnet array, cylinder body, conductor and 2 axis,
It is characterized in that, the two sides of the cylinder body are provided with side plate, the axis be arranged on the middle cross section of the cylinder body and
Both ends are pierced by cylinder body by side plate, the permanent magnet array by enclose set of permanent magnets on the shaft at, and it is described forever
Magnet array can do movement in the same direction with axis, the conductor setting in cylinder body medial surface, the conductor together with cylinder body be divided into
Few two valves surround the permanent magnet array, and there are the gaps 0-100mm between each valve conductor and permanent magnet array.
Preferably, the axis runs through entire cylinder body, is pierced by from the both ends of cylinder body, at this point, cylinder body both ends are equipped with the axis
Set and axle sleeve cover board, protect and the axis are supported to do piston motion in cylinder body.In another embodiment of the invention
In, the axis runs through entire cylinder body, is pierced by from the both ends of cylinder body, cylinder body both ends are equipped with the axle sleeve and axle sleeve cover board.
Preferably, when the axis runs through cylinder body, the side plate is outer adjustable plate, and the axis passes through the outer adjustable plate
The outside of outer adjustable plate is arranged in the axle sleeve cover board of axle sleeve, the fixed axle sleeve；The adjusting screw is located at the outer adjustable plate
Slotted hole on and cylinder body on, adjusting screw on outer adjustable plate passes through slotted hole and resists cylinder body lateral surface, passes through to change and adjust
The position that screw passes through the slotted hole is saved, adjusts every valve cylinder body together with the gap size of conductor and permanent magnet array；The cylinder
Adjusting screw on body passes through cylinder body lateral surface and conductor protrudes into cylinder interior, in order to make every valve cylinder body together with conductor and permanent magnet
The gap of array is equal in magnitude in the direction of said axle, and cylinder body does not tilt, and the adjusting screw on the cylinder body is with described
Axis be center face arrangement symmetrical above and below, by adjust cylinder body on adjusting screw, make every valve cylinder body together with conductor close to or far from
Permanent magnet array changes gap size.
Adjusting screw on the cylinder body is at least 2, it is preferred that the number of the adjusting screw on the cylinder body is 2-8
It is a, it is furthermore preferred that the number of the adjusting screw on the cylinder body is 4-6.
Preferably, the number of the adjusting screw on the outer adjustable plate is 2-8, it is furthermore preferred that on the outer adjustable plate
The number of adjusting screw be 4-6.
The present invention also provides the damper answering in terms of the structures such as building, bridge or mechanical structure shock-damping energy-dissipating
With.
The present invention also provides application of the damper in TMD device.
It is had the advantage that using technical solution provided by the invention
1. technical solution provided by the invention can be realized the continuous electrodeless adjustment of gapped magnetic field, damping force is accurately adjusted.
2. the gap in technical solution provided by the invention between permanent magnet array and conductor is stably and controllable, magnetic field energy is sent out
It waves to close to the limit；When the two sides magnetic pole of permanent magnet array is acted on conductor simultaneously, damping force is made to promote one times, compared to passing
The eddy current damper of system has saved permanent magnet material.
3. the damper frictional force very little provided by the invention, high sensitivity, starting speed are 1mm/s, start stroke
For ± 2mm, full hysteresis loop can be obtained；The damper performance is stablized under high circulation number, and temperature rises slow.
4. axis described in technical solution provided by the invention drives permanent magnet array to do movement in the same direction in the conductor, plate is compared
Conductor material has been saved in the plane motion of formula eddy current damper；Compared to the eddy current damper of inner-spiral type movement, structure is tight
It gathers, flexible arrangement, abrasion is less, and maintenance and repair is convenient.
5. technical solution provided by the invention utilizes close clearance fit between the axis and axle sleeve, guarantee the permanent magnetism
When volume array does piston motion in conductor surrounded, gapped magnetic field is stably and controllable.
6. damper provided by the invention can be applied in the TMD of energy-obsorbing and damping, the knot such as building, bridge can be also used for
The energy-eliminating shock-absorbing of structure or machinery.
Detailed description of the invention
Fig. 1 is the side view and side sectional view of a kind of optional damper of the present invention；
Fig. 2 is a kind of face the A-A perspective view in the different magnetic field gap of optional damper of the present invention, wherein left side
The gapped magnetic field of figure is 0mm, and the gapped magnetic field of right part of flg is 20mm；
Fig. 3 is a kind of face the B-B cross-sectional view in the different magnetic field gap of optional damper of the present invention, wherein left side
The gapped magnetic field of figure is 0mm, and the gapped magnetic field of right part of flg is 20mm；
Fig. 4 is the side sectional view of another optional damper of the present invention；
Fig. 5 is the face the A-A overhead sectional view of another optional damper of the present invention；
Fig. 6 is the surface side the B-B view in the different magnetic field gap of another optional damper of the present invention, wherein left
The gapped magnetic field of side figure is 3mm, and the gapped magnetic field of right part of flg is 20mm.
Fig. 7 is installation and the TMD free damping experimental data figure for not installing damper of the present invention, wherein dotted line table
Show that the TMD for not installing the damper that invention provides, solid line indicate the TMD for the damper for being mounted with that invention provides；
Fig. 8 is the hysteresis loop experimental data figure under the different magnetic field gap of damper of the present invention, wherein from up to
Under curve be respectively gapped magnetic field 0.5mm, 5mm, 10mm, 15mm and 20mm hysteresis loop, frequency 1Hz, amplitude 25mm；
In attached drawing, 1- oscillating bearing, the first oscillating bearing of 101-, 102- second joint bearing, 2- axis, 201- first axle,
The second axis of 201-, 3- permanent magnet array, the first permanent magnet array of 301-, the second permanent magnet array of 302-, 4- permanent magnet cover board,
401- the first permanent magnet cover board, 402- the second permanent magnet cover board, 5- axle sleeve, 6- axle sleeve cover board, the outer adjustable plate of 7-, 8- cylinder body, 9-
Conductor, 10- adjusting screw, 11- internal partition, adjustable plate in 12-, 13- slotted hole.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, it should be understood that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
Embodiment 1
A kind of structure of optional cartridge type eddy current damper is as shown in Figure 1, the present embodiment is that axis 2 does not extend through cylinder body
Cartridge type eddy current damper.
Oscillating bearing 1 is located at outside cylinder body 8, and 1 one end of oscillating bearing connects and supports one end of axis 2, and band moving axis 2 is done in the same direction
Piston motion, the other end connection of oscillating bearing 1 need the component of damping force；The other end of axis 2 passes through the center of outer adjustable plate 7
Point enters cylinder body 8, and passes through the central point of internal partition 11 and interior adjustable plate 12, and be not passed through the other end of cylinder body 8；The two of axis 2
End cap has axle sleeve 5, close clearance fit between axis 2 and axle sleeve 5, and axis 2 passes through axle sleeve 5 and carries out piston motion, and axle sleeve 5 is set respectively
Outer adjustable plate 7 and interior adjusting are separately fixed in the center of outer adjustable plate 7 and interior adjustable plate 12, and by axle sleeve cover board 6
The center of plate 12.
Permanent magnet array 3 includes henry chloranthus herb piece shape permanent magnet, and four pieces of permanent magnets enclose axis 2 and form cylindric permanent magnet array
3, the magnetic pole homopolarity arrangement of permanent magnet periphery, four pieces of permanent magnets are located at the two sides of axis 2, and permanent magnet array 3 and permanent magnet cover board 4 are logical
Screw connection is crossed, permanent magnet cover board 4 and axis 2 are connected through a screw thread.
Cylinder body 8 is the shell of damper, and cylinder body 8 plays a part of to overally support and accommodate to damper；The cylinder of the present embodiment
Body 8 is cylindrical body.Conductor 9 is located at the interior sidewall surface of cylinder body 8, and is fixed with cylinder body 8 by screw connection, and cylinder body 8 is together with conductor 9
It is divided into two valves on the section perpendicular to axis 2, the inside of every valve structure component is conductor 9, and outside is cylinder body 8, every valve structure portion
The conductor 9 of part and the relative position of cylinder body 8 are fixed, and every valve structure component can move under the adjusting of gapped magnetic field regulating system
Position, to change the gap between conductor 9 and permanent magnet array 3.
Outer adjustable plate 7 is located at the both ends outside cylinder body 8, and interior adjustable plate 12 is located at the end section of the axis 2 inside cylinder body 8,
The inside of interior adjustable plate 12 is equipped with internal partition 11, plays Auxiliary support and isolation；Adjusting screw 10 is located at outer adjustable plate 7
On, slotted hole 13, which is passed through, close to the adjusting screw 10 of oscillating bearing 1 connect with the threaded hole of cylinder body 8, the transferring of 8 other end of cylinder body
Adjusting screw 10 on section plate 7 passes through slotted hole 13 and connect with the threaded hole of cylinder body 8, by changing adjusting screw 10 across oval
The position in hole 13 adjusts every valve cylinder body 8 together with the gap size of conductor 9 and permanent magnet array 3, and then adjusts what damper provided
Damping force.
The face the A-A perspective view of damper adjusts spiral shell as shown in Fig. 2, adjusting screw 10 is symmetrically distributed on outer adjustable plate 7
The number of silk 10 is six.The major diameter direction of slotted hole 13 is vertical with the direction of axis 2, and the quantity of slotted hole 13 is also six；When
Three adjusting screws 10 of top are in the bottom of respective slotted hole 13, while three adjusting screws 10 of lower section are located
In the top of respective slotted hole 13, at this point, every valve cylinder body 8 is 0mm together with the gap of conductor 9 and permanent magnet array 3；When upper
Three adjusting screws 10 of side are in the top of respective slotted hole 13, while three adjusting screws 10 of lower section are in
The bottom of respective slotted hole 13, at this point, every valve cylinder body 8 is 20mm together with the gap of conductor 9 and permanent magnet array 3.
As shown in figure 3, when gapped magnetic field is 0mm, every valve cylinder body 8 abuts the face the B-B cross-sectional view of damper together with conductor 9
Permanent magnet array 3, when gapped magnetic field is 20mm, every valve cylinder body 8 is together with conductor 9 far from permanent magnet array 3.
Embodiment 2
The structure of another cartridge type eddy current damper is as shown in Figure 4,5, and the present embodiment is cartridge type electricity of the axis 2 through cylinder body
Eddy current retarder.
Oscillating bearing 1 is located at outside cylinder body 8, and one end of the first oscillating bearing 101 connects and supports outer adjustable plate 7, and second
Oscillating bearing 102 connects first axle 201 and the second axis 202, and first axle 201 and the second axis 202 is driven to do movement in the same direction；First closes
Bearings 101 connect the component for needing damping force with the other end of second joint bearing 102.First axle 201 and the second axis 202 are
Across 8 both ends of cylinder body outer adjustable plate 7 and run through entire cylinder body 8, the both ends of first axle 201 and the second axis 202 are respectively equipped with axis
Set 5, axle sleeve 5 is respectively provided on the outer adjustable plate 7 at 8 both ends of cylinder body, and is fixed on 8 both ends of cylinder body by axle sleeve cover board 6 respectively
On outer adjustable plate 7.
Permanent magnet array 3 includes two rectangular permanent magnets, and the magnetic pole of permanent magnet side not arrange by homopolarity, and permanent magnet is located at the
Between one axis 201 and the second axis 202, by screw connection, permanent magnet cover board 4 passes through spiral shell for permanent magnet array 3 and permanent magnet cover board 4
Line connects first axle 201 and the second axis 202.
Cylinder body 8 is the shell of damper, and cylinder body 8 plays a part of to overally support and accommodate to damper；The cylinder of the present embodiment
Body 8 is cuboid.Conductor 9 is located at the interior sidewall surface of cylinder body 8, and is fixed with cylinder body 8 by screw connection, and cylinder body 8 is together with conductor 9
Perpendicular to two valves are divided on the section of first axle 201 and the second axis 202, the inside of every valve structure component is conductor 9, and outside is
Cylinder body 8, the conductor 9 of every valve structure component and the relative position of cylinder body 8 are fixed, and every valve structure component can be adjusted in gapped magnetic field
Shift position under the adjusting of system, to change the gap between conductor 9 and permanent magnet array 3.
Outer adjustable plate 7 is located at the both ends outside cylinder body 8, and adjusting screw 10 is located at the slotted hole 13 and cylinder body 8 of outer adjustable plate 7
On, the adjusting screw 10 on outer adjustable plate 7 passes through slotted hole 13 and resists the lateral surface of cylinder body 8, by changing adjusting screw 10
Across the position of slotted hole 13, every valve cylinder body 8 is adjusted together with the gap size of conductor 9 and permanent magnet array 3, one piece of outer adjustable plate
The number of adjusting screw 10 on 7 is four；Adjusting screw 10 on cylinder body 8 passes through cylinder body lateral surface and conductor protrudes into cylinder body
Portion, in order to make every valve cylinder body 8 together with conductor 9 and the gap of permanent magnet array 3 equal in magnitude in the direction of said axle, cylinder body 8
It does not tilt, the adjusting screw 10 on cylinder body 8 is using the plane where first axle 201 and the second axis 202 to be right above and below the plane of symmetry
Claim arrangement, by adjusting the adjusting screw 10 on cylinder body 8, make every valve cylinder body 8 together with conductor 9 close to or far from permanent magnet array 3,
Change gap size, and then adjusts the damping force that damper provides.The adjusting screw number of 8 lateral surface of cylinder body is six.
The surface side the B-B view in the different magnetic field gap of damper is as shown in fig. 6, adjusting screw 10 is symmetrically distributed in transferring
It saves on plate 7, the number of adjusting screw 10 is four, the major diameter direction of slotted hole 13 and the direction of first axle 201 and the second axis 202
Vertically, the quantity of slotted hole 13 is also four；When two adjusting screws 10 of top are in the lower end of respective slotted hole 13,
Two adjusting screws 10 of lower section are in the upper end of respective slotted hole 13, while adjusting the adjusting screw 10 on cylinder body 8, this
When, every valve cylinder body 8 is 3mm together with the gap of conductor 9 and permanent magnet array 3；When two adjusting screws 10 of top are in respectively
From slotted hole 13 upper end, two adjusting screws 10 of lower section are in the lower end of respective slotted hole 13, while adjusting cylinder
Adjusting screw 10 on body 8, at this point, every valve cylinder body 8 is 20mm together with the gap of conductor 9 and permanent magnet array 3.
1, damping capacity is tested
Experimental method: artificial excitation is mounted with the TMD of the damper of embodiment 1 and does not install the damper of embodiment 1
The vibration of TMD enables two kinds of TMD free vibrations, records the time course data of acceleration after excitation.
TMD is vertical motion, including four spring-supported 500kg steel mass blocks, natural frequency of vibration 3Hz；The matter of TMD
It punches among gauge block and the damper of embodiment 1 is installed, damper upper end quality of connection block, lower end connects controlled structures.
Experimental result: as shown in fig. 7, not installing the free damping curve of the TMD of the damper of embodiment 1 with the time
Extend, the decaying of acceleration amplitude is slower, and when the time is 6 seconds, acceleration still has obvious amplitude；The damper of embodiment 1 is installed
TMD free damping curve with the extension of time, the decaying of acceleration amplitude is very fast, when the time is 3 seconds, amplitude is very
Small, when the time is 5 seconds, amplitude disappears substantially.It is demonstrated experimentally that the damping capacity of the damper of embodiment 1 is good, reach TMD
Target value needed for being adjusted to optimized parameter.
2, hysteresis loop is tested
Experimental method: 1 damper of embodiment is installed on testing machine, and testing machine applies frequency to one end of damper and is
1Hz, amplitude are the effect of 25mm, and damper is made to generate the displacement of sinusoidal variation, and measurement damper is produced in different gap
The time course data of raw damping force.
Experiment tests hysteresis loop of the damper of embodiment 1 at the gap of different conductor and permanent magnet array,
As shown in figure 8, the experimental results showed that, relation curve between the damping force and displacement of the damper of embodiment 1 is full ellipse
The gap of circle, conductor and permanent magnet array is smaller, and the damping force of generation is bigger, and damping force recycles interior work done at one and gets over
It is more.It is demonstrated experimentally that the damper of embodiment 1 can be realized the gap by adjusting conductor and permanent magnet array, offer is adjusted
The purpose of damping force size.
The embodiment of the present invention is described above in conjunction with figure, but the invention is not limited to above-mentioned specific realities
Mode is applied, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art exist
Under enlightenment of the invention, without breaking away from the scope protected by the purposes and claims of the present invention, many shapes can be also made
Formula, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of eddy current damper, including permanent magnet array, cylinder body, conductor and at least one axis, which is characterized in that described
The two sides of cylinder body are provided with side plate, and the axis is arranged on the middle cross section of the cylinder body and at least one end is worn by side plate
Cylinder body out, the permanent magnet array is by enclosing set of permanent magnets on the shaft at and the permanent magnet array can be with
Axis does movement in the same direction, and the conductor setting is divided at least two valves around described together with cylinder body in cylinder body medial surface, the conductor
Permanent magnet array, between each valve conductor and permanent magnet array be arranged the gap 0-100mm.
2. damper according to claim 1, which is characterized in that the axis is arranged by one end that side plate is pierced by cylinder body
There is oscillating bearing, the both ends of axis are cased with axle sleeve, and the axle sleeve is fixed on the side plate of cylinder body by axle sleeve cover board.
3. -2 described in any item dampers according to claim 1, which is characterized in that the gap is 0.01-100mm, more excellent
It is selected as 0.1-50mm, more preferably 1-50mm, more preferably 1-20mm.
4. damper according to claim 1-3, which is characterized in that the permanent magnet array includes several piece permanent magnetism
Body, the permanent magnet array are connected and fixed on the axis by permanent magnet cover board.
5. damper according to claim 1-4, which is characterized in that the side plate is outer adjustable plate, shown cylinder
It is equipped with interior adjustable plate in vivo, the interior adjustable plate is located at the end section of the axis of cylinder interior, and the inside of interior adjustable plate is equipped with interior
Partition.
6. damper according to claim 1-5, which is characterized in that the damper includes at least one tune
Screw is saved, the screw adjusts gap between conductor and permanent magnet array.
7. damper according to claim 1, which is characterized in that the damper includes permanent magnet array, cylinder body, leads
Body and 2 axis, which is characterized in that the two sides of the cylinder body are provided with side plate, and the middle part that the cylinder body is arranged in the axis is horizontal
On section and both ends are pierced by cylinder body by side plate, the permanent magnet array by enclose set of permanent magnets on the shaft at, and
And the permanent magnet array can do movement in the same direction with axis, the conductor setting in cylinder body medial surface, the conductor together with
Cylinder body is divided at least two valves around the permanent magnet array, and there are 0- between each valve conductor and permanent magnet array
The gap 100mm.
8. damper according to claim 7, which is characterized in that the adjusting screw is located on the slotted hole of the side plate
On cylinder body, the adjusting screw on outer adjustable plate passes through slotted hole and resists cylinder body lateral surface；Adjusting screw on the cylinder body
Cylinder interior is protruded into across cylinder body lateral surface and conductor, and symmetrical above and below as center face using the plane where the axis.
9. damper according to claim 1-8, which is characterized in that the conductor is divided into three together with cylinder body
Valve, pintongs, six valves or eight valves.
10. application of -10 described in any item dampers in building, bridge or mechanical structure according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620865.2A CN109488712A (en) | 2018-12-28 | 2018-12-28 | A kind of eddy current damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620865.2A CN109488712A (en) | 2018-12-28 | 2018-12-28 | A kind of eddy current damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488712A true CN109488712A (en) | 2019-03-19 |
Family
ID=65712992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811620865.2A Pending CN109488712A (en) | 2018-12-28 | 2018-12-28 | A kind of eddy current damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488712A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596808A (en) * | 2022-12-12 | 2023-01-13 | 天津飞旋科技股份有限公司（Cn） | Rotor, air compressor and fuel cell system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6279700B1 (en) * | 1999-09-13 | 2001-08-28 | Delphi Technologies, Inc. | Magnetorheological fluid damper |
| CN101225853A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Dynamical pressure gas elasticity foil tablet bearing with stability self-adaptive control function |
| CN104265818A (en) * | 2014-09-15 | 2015-01-07 | 陈政清 | Outer cup rotary axial eddy current damper |
| CN106763396A (en) * | 2017-01-18 | 2017-05-31 | 华中科技大学 | A kind of moving-magnetic type damper |
| CN207437653U (en) * | 2017-11-06 | 2018-06-01 | 智性科技南通有限公司 | Rotary-type axial direction eddy current damper in a kind of A seating |
| CN209725052U (en) * | 2018-12-28 | 2019-12-03 | 安邸建筑环境工程咨询(上海)有限公司 | A kind of eddy current damper |
-
2018
- 2018-12-28 CN CN201811620865.2A patent/CN109488712A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6279700B1 (en) * | 1999-09-13 | 2001-08-28 | Delphi Technologies, Inc. | Magnetorheological fluid damper |
| CN101225853A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Dynamical pressure gas elasticity foil tablet bearing with stability self-adaptive control function |
| CN104265818A (en) * | 2014-09-15 | 2015-01-07 | 陈政清 | Outer cup rotary axial eddy current damper |
| CN106763396A (en) * | 2017-01-18 | 2017-05-31 | 华中科技大学 | A kind of moving-magnetic type damper |
| CN207437653U (en) * | 2017-11-06 | 2018-06-01 | 智性科技南通有限公司 | Rotary-type axial direction eddy current damper in a kind of A seating |
| CN209725052U (en) * | 2018-12-28 | 2019-12-03 | 安邸建筑环境工程咨询(上海)有限公司 | A kind of eddy current damper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596808A (en) * | 2022-12-12 | 2023-01-13 | 天津飞旋科技股份有限公司（Cn） | Rotor, air compressor and fuel cell system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209725052U (en) | A kind of eddy current damper | |
| CN108729571B (en) | A kind of magnetorheological energy damper of piezoelectricity of half active | |
| CN104747651B (en) | A kind of paralleling model semi-active vibration-isolating device | |
| US10400841B2 (en) | Dynamic damper, vibration isolator, and method for manufacturing magnetic viscous elastomer | |
| CN108953473B (en) | A kind of vibration isolator of achievable horizontal decoupling | |
| CN104482091B (en) | A kind of vibration isolator with actively vibration absorption ability | |
| CN109630602B (en) | Electromagnetic quasi-zero stiffness vibration isolation system based on Stewart platform | |
| RU2382477C2 (en) | Working machine with electromechanical converter | |
| CN108757807B (en) | Band gap adjustable elastic wave vibration isolator based on liquid additional mass effect and vibration isolation method | |
| CN105299114A (en) | Four-freedom-degree parallel-connection oscillation reduction device for crystal oscillator and oscillation reduction method | |
| CN109488712A (en) | A kind of eddy current damper | |
| CN104179868A (en) | Active and passive integrated electromagnetic vibration isolation device | |
| RU172016U1 (en) | Multi-axis active anti-vibration platform | |
| CN105570367A (en) | Magnetic spring and linear motor and compressor with same | |
| CN106286667A (en) | Electromagnetic damper with bearing | |
| CN102259088A (en) | Miniature moving-magnet vibration exciter | |
| CN110094449B (en) | Low-power-consumption magnetorheological suspension based on shearing mode | |
| RU2657700C1 (en) | Magnetic fluid vibration damper | |
| CN106100438A (en) | Dynamic permanent magnet field drive-type ultra-magnetic deformation actuator | |
| CN205336074U (en) | Magnetoelectric action hydraulic buffer stop is moved to dead axle formula | |
| SU1008849A1 (en) | Electric machine stator | |
| CN106475295A (en) | A kind of inertial exciter based on twin coil single action magnet structure | |
| SU1190113A1 (en) | Controlled djnamic vibration damper | |
| RU2611691C1 (en) | Active antivibration platform based on magnetorheological elastomers | |
| CN213393301U (en) | Shear type magneto-rheological damping vibration absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |