CN107542822A - A kind of passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom - Google Patents
A kind of passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom Download PDFInfo
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- CN107542822A CN107542822A CN201710783651.6A CN201710783651A CN107542822A CN 107542822 A CN107542822 A CN 107542822A CN 201710783651 A CN201710783651 A CN 201710783651A CN 107542822 A CN107542822 A CN 107542822A
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- end cover
- permanent magnet
- main shaft
- bottom end
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Abstract
The invention discloses a kind of passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom, including main shaft, the axis of guide and the upper plate set gradually up and down, upper end cover, bottom end cover and lower shoe, the main shaft is fixedly connected with the lower shoe and sequentially passes through the bottom end cover and the upper end cover, the spindle jacket is provided with conductor tube, the conductor tube is fixedly connected with upper end cover and bottom end cover respectively, permanent magnet is provided between the conductor tube and the main shaft, air gap be present between the conductor tube and the permanent magnet, the upper and lower ends of the permanent magnet are respectively fixed on the main shaft.The present invention is an independent modular unit for providing damping, when in use, it is only necessary to the lower shoe of device is fixedly connected with the base, the upper plate of device is connected with vibrating body by top plate, now if vibrating body has relative motion with pedestal, the present apparatus will produce damping.
Description
Technical field
The present invention relates to the single-degree of freedom vibration control field of vertical direction, and in particular to one kind is entered using magnetic damping effect
The Verticle vortex magnetic damping generating means of the contactless vibration control of row.
Background technology
Vibration is phenomenon that is very common and being difficult to avoid that in plant equipment, vibratory output if it exceeds certain limit,
Equipment will produce larger noise, and harmful effect, and the service behaviour that will have a strong impact on equipment are produced to surrounding environment, shortens it
Service life so that related components premature failure.Therefore, vibration damping is essential in plant equipment.
The mode such as generally use damping material, hydraulic damper, gas damper subtracts in the mechanical devices such as general engine
Shake.But as damping materials such as rubber, have space-consuming larger, installation is inconvenient, and performance is unstable, and service life is shorter, needs
Often change the shortcomings of safeguarding；The dampers such as hydraulic pressure are often complicated, higher to the requirement such as designing, installing；And in height
In the case of limited, there is the defects of complicated, damped coefficient is small in existing vertical damper.Therefore, a kind of structure is more
Simply, applicability is wider, and performance is more distinguished and stablizes, and the damper lasted a long time needs to be developed, with preferably to machinery
Equipment etc. carries out vibration damping.
The content of the invention
To solve above technical problem, the present invention provides a kind of single-degree-of-freedom, and passively non-contact Verticle vortex magnetic damping occurs
Device, compensate for existing vertical damper structure it is complicated, damped coefficient is small in the case of height-limited the defects of, there is structure letter
It is single, take small volume, the features such as damping effect is strong, maintenance cost is low.
To achieve the above object, the invention provides following technical scheme：
The present invention provides a kind of single-degree-of-freedom passively non-contact Verticle vortex magnetic damping generator, including main shaft, the axis of guide
And upper plate, upper end cover, bottom end cover and the lower shoe set gradually up and down；
The main shaft is fixedly connected with the lower shoe and sequentially passes through the bottom end cover and the upper end cover, the main shaft
Conductor tube is arranged with outside, the conductor tube is fixedly connected with the upper end cover and the bottom end cover respectively, the conductor tube and institute
The permanent magnet that ring-type is provided between main shaft is stated, the permanent magnet is sheathed on the main shaft, the conductor tube and the permanent magnetism
Air gap between iron be present, the upper and lower ends of the permanent magnet are clamped on the main shaft by locating ring positioning respectively, the upper end
Lid is with being respectively arranged with the through hole being adapted with the permanent magnet on the bottom end cover；
The axis of guide is fixedly connected after the upper end cover and the bottom end cover with the lower shoe, the axis of guide
The lower shoe junction is provided with shaft stool, is provided with the linear bearing being matched therewith on the axis of guide, it is described on
The through hole adaptable with the axis of guide and the main shaft is respectively arranged with top plate, the upper plate connects by being secured to
Swing rod run through the upper end cover after be fixedly connected with the bottom end cover, be separated with sky between the upper end cover and the upper plate
Between, the length of the main shaft and the axis of guide is all higher than the distance between the upper plate and the bottom end cover.
Optionally, the quantity of the permanent magnet is at least two pieces, and the setting of adjacent two blocks of permanent magnets repels each other.
Optionally, it is provided with iron plate between every two blocks of permanent magnets.
Optionally, the linear bearing is two, is fixedly connected respectively with the upper end cover and the bottom end cover, and set
Between the upper end cover and the bottom end cover.
Optionally, the material of the permanent magnet is neodymium iron boron, and the material of the iron plate is 45 steel, the permanent magnet and iron plate
Thickness ratio be 1.23:1.
Optionally, the axis of guide and the swing rod respectively set three groups, with 120 ° of weeks being arranged at intervals to the conductor tube
Enclose.
Optionally, the permanent magnet internal diameter and the main shaft external diameter are interference fits.
Optionally, the distance of the air gap is 0.5mm.
Optionally, multiple positioning holes with load connection are provided with the upper plate.
Optionally, the conductor tube is copper pipe.
The present invention achieves following technique effect relative to prior art：
(1) device proposed by the invention belongs to contactless damp generator, has usage time length, maintenance cost
Low, device generates heat the characteristics of small；
(2) device proposed by the invention is directed to axle and separated with being arranged the main shaft of permanent magnet, has conceded the length of bearing,
More permanent magnets can be filled on main shaft, magnetic as big as possible is provided in the case of the height-limited system of device integral installation
Damped coefficient；
(3) device proposed by the invention devises the mode that is intervally arranged of special permanent magnet and iron plate, equally long
It is under degree limitation, permanent magnet same polarity is positioned opposite, and the mode of addition iron plate can produce the damping system of maximum between permanent magnet
Number, there is provided optimal damping；And the best proportion of permanent magnet thickness and iron plate thickness is 1.23:1, such as thickness 8mm
Permanent magnet interval inserting thickness 6.5mm iron plate is optimal, not only increases damped coefficient, and it is relative to reduce permanent magnet same polarity
The difficulty of installation.
(4) in the present invention upper plate be with conductor tube be fixedly connected for the part that is connected with vibrating body, it is contemplated that shake
The vibration horizontal component that may be present of kinetoplast, therefore can directly be produced with upper plate with welding or forging type connection conductor tube
Very big horizontal rigidity, so as to lose the flexibility in horizontal direction.Therefore, the present invention by swing-bar mechanism come connect upper plate with
Conductor tube, both reach rigidly connected purpose, and softened horizontal rigidity again, and add the adaptability of whole device.
(5) proposed by the invention is an independent modular unit for providing damping, so when in use, only needing
The lower shoe of device is fixedly connected with the base, the upper plate of device is connected with vibrating body by top plate, if now vibrating
When body and pedestal have relative motion, the present apparatus will produce damping, when vibration frequency is higher, when Oscillation Amplitude is bigger, and resistance
Buddhist nun's effect is also more obvious, and when vibrating body reaches resonant frequency, its covibration substantially weakens.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is main shaft, the arrangement schematic diagram of permanent magnet and iron plate in the present invention；
Fig. 2 is the general structure schematic diagram of apparatus of the present invention；
Fig. 3 is the schematic three dimensional views of apparatus of the present invention.
Description of reference numerals：101st, lower shoe；102nd, shaft stool；103 linear bearings；104th, the axis of guide；105th, upper plate；
106th, conductor tube；107th, main shaft；108th, iron plate；109th, permanent magnet；110th, upper end cover；111st, swing rod；112nd, bottom end cover；113rd, it is fixed
Position ring；G, air gap.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The present invention provides a kind of single-degree-of-freedom passively non-contact Verticle vortex magnetic damping generator, as Figure 2-3, including
Main shaft 107, the axis of guide 104 and the upper plate 105 set gradually up and down, upper end cover 110, bottom end cover 112 and lower shoe 101.
Main shaft 107 is fixedly connected with lower shoe 101 by end thread and sequentially passes through bottom end cover 112 and upper end cover 110,
Conductor tube 106 is arranged with outside main shaft 107, conductor tube 106 is bolted with upper end cover 110 and bottom end cover 112 respectively, conductor
The permanent magnet 109 of polylith ring-type is provided between pipe 106 and main shaft 107, more block permanent magnets 109 are sheathed on main shaft 107, forever
The internal diameter of magnet 109 and the external diameter of main shaft 107 are interference fits.The specific arrangement of permanent magnet 109 and iron plate 108 on main shaft 107
Polylith same polarity is positioned opposite, and the direction of arrow is magnetizing direction as shown in figure 1, permanent magnet 109 is arranged to for mode, every two blocks of permanent magnetism
Iron plate 108 is both provided among iron 109, the air gap g that 0.5mm between conductor tube 106 and permanent magnet 109 be present.The He of permanent magnet 109
Iron plate 108 is positioned after being arranged on main shaft 107 using locating ring 113, so as to main shaft 107, permanent magnet 109 and lower shoe
101 fastened to each other have no relative motion.Upper end cover 110 is adapted with being respectively arranged with size on bottom end cover 112 with permanent magnet 109
Through hole, do not contacted when being moved up and down in order to upper end cover 110 with bottom end cover 112 with permanent magnet.
In order to reduce the height of single unit system to greatest extent, while bigger damping system is provided under limited height
Count, be arranged at intervals play the guiding role three groups of axis of guides 104 around conductor tube 106 with 120 ° in device, it runs through upper end
After lid 110, bottom end cover 112, it is fixedly connected by the external screw thread of its end with lower shoe 101.The axis of guide 104 and lower shoe 101
Junction is provided with shaft stool 102, and two linear bearings 103 being matched therewith, the linear axis are additionally provided with the axis of guide 104
Hold 103 to be bolted to connection with upper end cover 110 and bottom end cover 112 respectively, and be arranged at upper end cover 110 and bottom end cover 112
Between.
Because the upper plate 105 of device needs to be fixedly connected with conductor tube 106, for the part being connected with vibrating body, examine
Consider the vibration horizontal component that may be present of vibrating body, thus directly with welding or forging type connection conductor tube 106 with it is upper
Top plate 105 can produce very big horizontal rigidity, so as to lose the flexibility in horizontal direction.Therefore, in order to soften horizontal rigidity, make
It is more reasonable to obtain structure and the motion of whole device, also includes being arranged at intervals arrive around conductor tube 106 three with 120 ° in device
Root swing rod 111, three swing rods 111 are bolted on upper plate 105 respectively, and upper plate 105 is connected by being secured to
Swing rod 111 run through upper end cover 110 after be bolted to connection with bottom end cover 112, so as to upper end cover 110, bottom end cover 112,
Upper plate 105, conductor tube 106 are fastened to each other to have no relative motion, is moved with being vibrated caused by vibration source.Device passes through three
Root swing rod 111 connects upper plate 105 and conductor tube 106, has both reached rigidly connected purpose, has softened horizontal rigidity again,
Add the adaptability of whole device.
The through hole adaptable with the axis of guide 104 and main shaft 107 is respectively arranged with upper plate 105, is set on upper plate 105
There are multiple positioning holes with load connection, cavity is provided between upper end cover 110 and upper plate 105, on upper plate 105 is carried out
During lower motion, the axis of guide 104 and main shaft 107 and upper plate 105 is set not to collide；The length of main shaft 107 and the axis of guide 104
The distance between upper plate 105 and bottom end cover 112 are all higher than, the setting of the distance should be ensured that in upper plate 105, upper end cover
110th, when bottom end cover 112 and conductor tube 106 are moved up and down, the axis of guide 104 and main shaft 107 will not run through upper plate 105 and
Push up on vibration source.
In order that damping effect becomes apparent from, conductor tube 106 passes through its leading remarkably from the red copper T2 with relatively thick
Electrically so that vortex flow is bigger；Permanent magnet 109 selects chromium plating neodymium iron boron N45 and axial charging, makes it have stronger magnetic
Change intensity and preferable heat-resisting quantity；The material of iron plate 108 is 45 steel, and the permanent magnet 109 that thickness is 8mm is spaced inserting thickness
For 6.5mm iron plate 108, the thickness ratio of permanent magnet 109 and iron plate 108 is 1.23:1, the setting can reach maximum damping system
Number and setting height(from bottom)；Main shaft 107 selects SUS304, the movement for making its weak magnetic both be easy in magnet installation process, prevents again
Due to radial-play caused by magnet inner ring accuracy error；Locating ring 113 selects aluminium alloy, it is not interfered with the magnetic field of magnet
Distribution situation.
The overall structure of device is as shown in figure 3, the axis of guide 104 and swing rod 111 respectively have three groups, with 120 ° of intervals in the present invention
It is arranged in around conductor tube 106, whole device is a modular structure, in single-degree of freedom vibration domain generality pole
By force, there is very high practical value.Under original state, upper plate 105 fastened to each other, upper end cover 110, bottom end cover 112 and lead
Body pipe 106 can freely up and down slide along main shaft 107.
Passively non-contact Verticle vortex magnetic damping generator utilizes Maxwell's electromagnetic equation to single-degree-of-freedom in the present invention
The principle of group and faraday's theorem, permanent magnet and conductor tube is set to produce vortex magnetic damping effect by the way that relative motion occurs, its
Specific work process is as follows：First, the present apparatus is positioned over vibration source and by between vibration isolation object, and by upper plate 105
The multiple positioning holes with load connection set are connected with vibration source, and lower shoe 101 is connected with by vibration isolation object, works as vibration
When source vibrates, upper plate 105, upper end cover 110, bottom end cover 112 and conductor tube 106 is driven to move, thus, conductor tube
106 produce relative motion with permanent magnet 109, vortex are produced in conductor tube 106, so as to produce motion-impeding damping force (long-range navigation
Hereby power) to suppress to vibrate, and this Lorentz force is directly proportional to the speed of relative motion, is the viscous damping forces of standard.
It should be noted that the embodiment of the present invention includes polylith same polarity permanent magnet positioned opposite, and in permanent magnet
Between be provided with iron plate, the set-up mode can produce the damped coefficient of maximum under equal length limitation, and the setting of iron plate is same
When also act the effect that more block permanent magnet same polarities are mounted opposite difficulty that reduces, but it simply makes the single-degree-of-freedom quilt of the present invention
A kind of set-up mode of relatively large damped coefficient, present invention vortex can be produced by moving non-contact Verticle vortex magnetic damping generator
The set-up mode of main shaft and permanent magnet is not limited to the embodiment in the present invention in magnetic damping generator, permanent magnet and iron plate
The thickness ratio of material and permanent magnet and iron plate is not limited to the embodiment in the present invention, and the quantity of permanent magnet is set in the present invention
It is set to a plurality of, iron plate whether there is, as long as disclosure satisfy that makes conductor tube produce setting for relative motion with permanent magnet
Put；Conductor tube in the present invention is not limited solely to copper pipe, aluminum pipe etc.；The distance of air gap is not limited solely to
0.5mm, as long as not contacted with each other when can realize conductor tube and permanent magnetism patch relative motion；The quantity of the axis of guide and setting position
Put and be not limited solely to the above embodiment of the present invention, guide effect can be realized；The quantity and set location of swing rod are not
The above embodiment of the present invention is limited only to, being rigidly connected for upper plate and bottom end cover can be realized；Linear bearing
Quantity and position are not limited solely to the above embodiment of the present invention, can realize and are used in conjunction with each other with the axis of guide.
Apply specific case in this specification to be set forth the principle and embodiment of the present invention, above example
Explanation be only intended to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, in specific embodiments and applications there will be changes.In summary, in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
- A kind of 1. passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom, it is characterised in that including main shaft, the axis of guide with And upper plate, upper end cover, bottom end cover and the lower shoe set gradually up and down；The main shaft is fixedly connected with the lower shoe and sequentially passes through the bottom end cover and the upper end cover, the spindle jacket Provided with conductor tube, the conductor tube is fixedly connected with the upper end cover and the bottom end cover respectively, the conductor tube and the master The permanent magnet of ring-type is provided between axle, the permanent magnet is sheathed on the main shaft, the conductor tube and the permanent magnet it Between air gap be present, the upper and lower ends of the permanent magnet are clamped on the main shaft by locating ring positioning respectively, the upper end cover with The through hole being adapted with the permanent magnet is respectively arranged with the bottom end cover；The axis of guide is fixedly connected after the upper end cover and the bottom end cover with the lower shoe, the axis of guide and institute State lower shoe junction and be provided with shaft stool, the linear bearing being matched therewith, the upper plate are provided with the axis of guide On be respectively arranged with the through hole adaptable with the axis of guide and the main shaft, the upper plate is by being secured to the pendulum of connection Bar is fixedly connected after running through the upper end cover with the bottom end cover, and space, institute are separated between the upper end cover and the upper plate The length for stating main shaft and the axis of guide is all higher than the distance between the upper plate and the bottom end cover.
- 2. the passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom according to claim 1, it is characterised in that institute The quantity for stating permanent magnet is at least two pieces, and the setting of adjacent two blocks of permanent magnets repels each other.
- 3. the passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom according to claim 2, it is characterised in that every Iron plate is provided between two blocks of permanent magnets.
- 4. the passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom according to claim 3, it is characterised in that institute Linear bearing is stated as two, is fixedly connected respectively with the upper end cover and the bottom end cover, and be arranged at the upper end cover and institute State between bottom end cover.
- 5. according to the passive non-contact Verticle vortex magnetic damping generator of the single-degree-of-freedom described in claim 3, it is characterised in that The material of the permanent magnet is neodymium iron boron, and the material of the iron plate is 45 steel, and the thickness ratio of the permanent magnet and iron plate is 1.23: 1。
- 6. the passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom according to claim 1, it is characterised in that institute State the axis of guide and the swing rod respectively sets three groups, be arranged at intervals with 120 ° to around the conductor tube.
- 7. the passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom according to claim 1, it is characterised in that institute It is interference fits that permanent magnet internal diameter, which is stated, with the main shaft external diameter.
- 8. the passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom according to claim 1, it is characterised in that institute The distance for stating air gap is 0.5mm.
- 9. according to the passive non-contact Verticle vortex magnetic damping generator of any described single-degree-of-freedom in claim 1-8, it is special Sign is, multiple positioning holes with load connection are provided with the upper plate.
- 10. the passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom according to claim 9, it is characterised in that The conductor tube is copper pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783651.6A CN107542822B (en) | 2017-09-04 | 2017-09-04 | A kind of passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom |
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|---|---|---|---|
| CN201710783651.6A CN107542822B (en) | 2017-09-04 | 2017-09-04 | A kind of passive non-contact Verticle vortex magnetic damping generator of single-degree-of-freedom |
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| CN107542822B CN107542822B (en) | 2019-01-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953473A (en) * | 2018-08-15 | 2018-12-07 | 上海大学 | A kind of vibration isolator of achievable horizontal decoupling |
| CN109027088A (en) * | 2018-09-20 | 2018-12-18 | 上海大学 | A kind of mixed shock absorber based on Stewart structure |
| CN111828523A (en) * | 2020-06-30 | 2020-10-27 | 上海大学 | Single-degree-of-freedom magnetic damping shock absorber based on eddy current effect |
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| CN108953473A (en) * | 2018-08-15 | 2018-12-07 | 上海大学 | A kind of vibration isolator of achievable horizontal decoupling |
| CN109027088A (en) * | 2018-09-20 | 2018-12-18 | 上海大学 | A kind of mixed shock absorber based on Stewart structure |
| CN109027088B (en) * | 2018-09-20 | 2019-11-12 | 上海大学 | A kind of mixed shock absorber based on Stewart structure |
| CN111828523A (en) * | 2020-06-30 | 2020-10-27 | 上海大学 | Single-degree-of-freedom magnetic damping shock absorber based on eddy current effect |
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|---|---|
| CN107542822B (en) | 2019-01-25 |
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