CN108286569A - Eccentric outer shroud Horizontal permanent-magnetic bearing - Google Patents
Eccentric outer shroud Horizontal permanent-magnetic bearing Download PDFInfo
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- CN108286569A CN108286569A CN201810042784.2A CN201810042784A CN108286569A CN 108286569 A CN108286569 A CN 108286569A CN 201810042784 A CN201810042784 A CN 201810042784A CN 108286569 A CN108286569 A CN 108286569A
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- outer shroud
- magnet
- bearing
- eccentric outer
- magnetic
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The present invention discloses a kind of eccentric outer shroud Horizontal permanent-magnetic bearing, including float, eccentric outer shroud and bearing, the float includes that an axis fixes magnet, the axis is fixed magnet and is arranged in the inside of eccentric outer shroud, the bias outer shroud is fixedly connected with bearing, the distance between outer circle and inner circle are less than eccentric the distance between outer shroud bottom cylindrical and inner circle at the top of the bias outer shroud, and eccentric outer shroud is permanent magnet.In bias outer shroud Horizontal permanent-magnetic bearing of the present invention, semi-ring gives axis and fixes the thrust of magnet more than upper half ring under eccentric outer shroud, eccentric outer shroud Horizontal permanent-magnetic bearing is set to have larger stiffness, and the upper half ring of eccentric outer shroud fixes magnet to axis and provides downward restraining force, when roller bearing is by external impacts, roller bearing amplitude is small, and ripple attenuation is fast.
Description
Technical field
The invention belongs to magnetic suspension bearing manufacturing technology fields, and in particular to a kind of bias outer shroud Horizontal permanent-magnetic bearing.
Background technology
Glass substrate is the important component of liquid crystal display panel, usually only 0.3-0.8 millimeters of thickness.Why it is known as
Substrate is gradually to apply series of process because the production and processing of liquid crystal display is using glass substrate as matrix and ultimately form liquid
Crystal panel.The processes such as ito thin film deposition, resist coating, exposure, development, etching, stripping, these works are carried out on the glass substrate
Switching needs between sequence are completed by special conveying device.
Liquid crystal glass base is to be used as support and rotation by one group of idler wheel to realize transmission.In the breadth of glass substrate
In width direction, one group of idler wheel is carried on a root long roller bearing, and several rows of roller bearing long at equal intervals holds up monolithic glass substrate.It presses
According to the breadth of current liquid crystal glass base, the width design of conveyer system is required at 3.3 meters or more, then mating long roller bearing
Need corresponding length.Long roller bearing is made of stainless steel tube, due to roller bearing weight, idler wheel weight, liquid crystal glass base weight
The collective effect of amount, the apparent sinking and bending of interlude of long roller bearing, and distance of sinking is acceptable beyond glass substrate deformation
Range, it is necessary to the support of long roller bearing is solved the problems, such as using bearing.However, mechanical bearing will produce iron filings, pollution liquid crystal display, it should
Scheme, which has in industry been in, eliminates edge；Although air bearing is vacantly without friction, compressed air is pollution sources.To understand
Certainly problems of the prior art, long roller bearing also improve intensity using the material preparation of carbon fiber to reduce weight, but 3.3
The long carbon fiber pipe production cost of rice is quite high.Magnetic suspension bearing based on permanent-magnet structure is not necessarily to external subsidiary conditions, so that it may
So that long roller bearing keeps rigidity to suspend, without the spy for polluting, while having corrosion-resistant assembly simple and convenient that rubs, do not generate break flour
Point.These features become the preferred plan of liquid crystal glass base conveyer system bearing support.
Currently, common magnetic suspension bearing has two classes：One kind is vertical magnetic suspension bearing, and one kind is horizontal magnetic suspension axis
It holds.Patent No. ZL93225573.6 kilowatt-hour meters monoblock type magnetic bearing is a kind of vertical magnetic suspension bearing, for mechanical electricity
It can table.From between mid-term the 1990s more than 20 years till now, several such monoblock type magnetic bearing in terms of hundred million are in countries in the world
Electric energy meter on run.It uses the draw point of a Φ 0.5 as the axis of centering, uses the graphite annulus of self-lubricating function as axis
It holds, electric energy meter turntable is allowed to be pivoted, magnetic thrust holds up electric energy meter turntable whole gravity completely between 2 magnet rings of magnetic bearing.
Therefore, magnetic bearing is run in the case of being in no normal pressure, is provided a kind of friction of stabilization for ammeter, is kept ammeter for a long time
Precision, to realize the purpose of long-life.But this vertical magnetic suspension bearing clearly cannot be used for transferring long axis.
Another kind of is horizontal magnetic suspension bearing (also known as journal bearing), and application is fewer.Such horizontal magnetic suspension bearing is again
It is divided into electromagnetic bearing and Permanent-magnet bearing.In Chemical Industry Press's distribution《Mechanical design handbook》Fourth edition volume 2 is described.
" journal bearing " in Permanent-magnet bearing, belongs to horizontal magnetic suspension bearing.The magnetic suspension bearing of this kind of structure only exists
Inner ring could generate vertical thrust (magnetic suspension force) when deviateing center.Moreover, only the lower branch of outer ring can just produce inner ring
Raw upward thrust (magnetic suspension force), and internally circle only will produce downward thrust to the upper half-turn of outer ring, and magnetic suspension force is made to subtract
It is few.In addition, the internal diameter due to outer ring is larger, and it is also small to the restraining force of inner ring in radial direction, and rigidity is also small.So should
Kind magnetic bearing is unsatisfactory for the application of conveyer system, could not also be commercialized.Patent of invention CN201110056395.3
A kind of permanent magnetism machinery hybrid magnetic power bearing is disclosed, since this magnetic bearing has used mechanical bearing, or there is machinery
Friction cannot meet the cleannes requirement of the conveyer system of TFT-LCD the 12nd generation line glass substrates.
In addition, also electromagnetic bearing.But electromagnetic bearing needs excitation, also to there is the sensor and feedback of sensitive eccentric variation
System or servo-control system.Its is complicated, expensive, and is difficult to realize minimize.It is crossed not in general industry production
Cost pass, is not used.So available without suitable magnetic suspension bearing in existing technology.
Invention content
The technical problem to be solved by the invention is to provide a kind of eccentric outer shroud Horizontal permanent-magnetic bearings, solve existing skill
The technical problem that Horizontal permanent-magnetic bearing radial rigidity is poor in art, the roller bearing vibration amplitude in transmission process is big.
In order to solve the above technical problems, the technical solution adopted by the present invention：A kind of bias outer shroud Horizontal permanent-magnetic bearing, it is special
Sign is：Including float, eccentric outer shroud and bearing, the float includes that an axis fixes magnet, and the axis fixes magnet setting
In the inside of eccentric outer shroud, the bias outer shroud is fixedly connected with bearing, at the top of the bias outer shroud between outer circle and inner circle
Distance is less than eccentric the distance between outer shroud bottom cylindrical and inner circle, and eccentric outer shroud is permanent magnet.
It should be noted that bias outer shroud of the present invention can be single complete eccentric magnet structure, also may be used
To be the eccentric structure being spliced to form by polylith permanent magnet.For example, eccentric outer shroud can by a donut and with it is concentric
The identical magnetic patch composition of annulus magnetic direction, and magnetic patch is set to the bottom of donut, can realize semi-ring under eccentric outer shroud
Thrust be more than upper half ring thrust.This bias outer shroud is more advantageous to processing.
Eccentric outer shroud Horizontal permanent-magnetic bearing, is based on permanent magnetism principle of same-sex repulsion described in the technical program, there is no need to water,
Any extraneous subsidiary conditions such as electricity, gas, oil, structure design is simple, easy to use；And with the concentric outer shroud phase of identical internal-and external diameter
Than, eccentric outer shroud fixes the thrust that magnet provides bigger to internal axis in bias outer shroud Horizontal permanent-magnetic bearing of the present invention,
I.e. when loading one periodically, the internal diameter of eccentric outer shroud is smaller than the internal diameter of concentric outer shroud in eccentric outer shroud Permanent-magnet bearing, identical negative
In the case of load, bias outer shroud Permanent-magnet bearing of the present invention can reduce the volume of bearing；Due to the bottom of eccentric outer shroud
The distance between outer circle and inner circle are more than the distance between outer circle and inner circle at the top of eccentric outer shroud, according to the principle that identical charges repel each other,
Semi-ring, which gives axis and fixes the repulsive force of magnet, under eccentric outer shroud is more than upper half ring, and axis fixes magnet and floats towards the center of circle of Permanent-magnet bearing
More than (center of circle of inner circle in i.e. eccentric outer shroud).By selecting in suitable eccentric outer shroud top and bottom between outer circle and inner circle
Distance, can make axis fix magnet center under certain load (gravity), overlapped with the center of circle of Permanent-magnet bearing or inclined
On certain point of the longitudinally asymmetric line of heart outer shroud, magnet is fixed to the axis of bearing due to the upper half ring of eccentric outer shroud, downward constraint is provided
Power, when roller bearing is by external impacts, roller bearing amplitude is small, ripple attenuation is fast；It is carried, is made using Permanent-magnet bearing of the present invention
With process it is contactless, without friction and without lubrication, fundamentally solve the pollutions such as Bearing inner grease, break flour in the prior art
Problem.
Preferably, it is a magnet ring that the axis, which fixes magnet, and axis with magnet ring through being fixedly connected after magnet ring.In the present invention
It can be magnet ring that axis, which fixes magnet, setting magnet ring structure convenient for axis through being fixed with magnet ring after magnet ring, when axis rotates, stress
Uniformly, rotation is steady.
It is further preferred that the float further includes bushing and retaining mechanism, the lining is set in magnet ring and axis
Between at position, and be fixedly connected between magnet ring and bushing, the retaining mechanism is arranged in the outside of bushing, and retaining mechanism is by axis
It is fastened with bushing.
It is further preferred that the magnet ring is axial magnet or is radial magnet with eccentric outer shroud.
Preferably, it is a magnet steel that the axis, which fixes magnet, and the float further includes sleeve, and the magnet steel is fixedly installed on
The inside of casing, axle position is in the both ends of magnet steel and is fixedly installed on inside pipe casing.It can be magnet steel that axis of the present invention, which fixes magnet, no
It is same as the connection type of magnet ring, and axis is fixed on the both sides of magnet steel, and axis and magnet steel is fixed by casing.
It is further preferred that the magnet steel is axial magnet with eccentric outer shroud.It should be noted that outside magnet steel and bias
Axial magnetic field is generated when ring is axial magnet.
Preferably, the eccentric outer shroud fixes magnet with axis and constitutes a row bearing unit, and the bearing unit is at least arranged
There are two row, the position of adjacent two row bearing unit to be oppositely arranged, the bearing unit is fixedly connected with pedestal.Multirow bearing unit
Structure can further increase the stiffness and rigidity of Permanent-magnet bearing.
Still more preferably, cushion block or radial magnet ring are provided between adjacent two row bearing unit.It needs to illustrate
It is that cushion block can be permeability magnetic material, or non-magnet material；Adjacent axis fixes magnet can meet this using radial magnet ring
Permanent-magnet bearing in invention realizes stronger extrusion magnetic field, suitable for requirement for bearing capacity is especially high and spy that volume requirement is especially small
Different purposes occasion.
Still more preferably, in magnetic field structure, the adjacent two row bearing unit is arranged in series or adjacent two row institute
State the setting of bearing unit differential concatenation.It should be noted that the biserial or multirow bearing unit of differential concatenation setting are relative to string
Join the bearing unit of setting, stiffness will further improve.
Preferably, the axis fixes magnet and the surface of eccentric outer shroud is both provided with clad.In order to improve the resistance to of bearing
Corrosion requires, and extends the service life of Permanent-magnet bearing, and the surface that axis fixes magnet and eccentric outer shroud is both provided with clad, coats
Layer can be electroplated layer, can also be the resistant materials such as plastics, epoxy resin, stainless steel.
Beneficial effects of the present invention：
A kind of eccentric outer shroud Horizontal permanent-magnetic bearing of the present invention is due between the bottom cylindrical and inner circle of eccentric outer shroud
Distance be more than the distance between outer circle and inner circle at the top of eccentric outer shroud, according to the principle that identical charges repel each other, semi-ring under eccentric outer shroud
The repulsive force for giving axis fixation magnet is more than upper half ring, and axis fixes magnet and floats towards the center of circle of Permanent-magnet bearing (in i.e. eccentric outer shroud
The round center of circle) more than.By selecting suitable eccentric the distance between outer shroud top and bottom outer circle and inner circle, axis can be made to consolidate
The center of magnet is determined under certain load (gravity), is overlapped with the center of circle of Permanent-magnet bearing or on certain point of its line of symmetry, partially
Heart outer shroud Horizontal permanent-magnetic bearing has larger stiffness than concentric outer shroud Horizontal permanent-magnetic bearing；The upper half ring pair of eccentric outer shroud simultaneously
The axis of bearing fixes magnet and provides downward restraining force, and when roller bearing is by external impacts, roller bearing amplitude is small, and ripple attenuation is fast；
Secondly, the eccentric outer shroud Horizontal permanent-magnetic bearing of Multi-row serial setting and single-row eccentric outer shroud Horizontal permanent-magnetic bearing phase
Than rigidity and stiffness all increase；And the eccentric outer shroud Horizontal permanent-magnetic bearing and Multi-row serial of multiple row differential concatenation setting
The eccentric outer shroud Horizontal permanent-magnetic bearing of setting is compared, and stiffness further increases；
In addition, using Permanent-magnet bearing of the present invention carry, it is contactless using process, without friction and without lubrication, root
Solve the pollution problems such as Bearing inner grease, break flour in the prior art on this.
Description of the drawings
Fig. 1 is the front view of 1 axis bearing unit of embodiment；
Fig. 2 is the left view of 1 axis bearing unit of embodiment；
Fig. 1 a are the front view of another bearing unit；
Fig. 3 is the stereogram of eccentric outer shroud Horizontal permanent-magnetic bearing in embodiment 1；
Fig. 4 a are the front view of eccentric outer shroud Horizontal permanent-magnetic bearing in embodiment 1；
Fig. 4 b are the left view of eccentric outer shroud Horizontal permanent-magnetic bearing in embodiment 1；
Fig. 5 a and Fig. 5 b are a kind of left view of single-row bearing unit；
Fig. 5 c and Fig. 5 d are the left view of another single-row bearing unit；
Fig. 6 a and Fig. 6 b are a kind of left view for the bearing unit that biserial is arranged in series in embodiment 2；
Fig. 6 c and Fig. 6 d are the left view for the bearing unit that another biserial is arranged in series in embodiment 2；
Fig. 7 a and Fig. 7 b are a kind of left view of the bearing unit of Multi-row serial setting in embodiment 2；
Fig. 7 c and Fig. 7 d are the left view of the bearing unit of another Multi-row serial setting in embodiment 2；
Fig. 8 a and Fig. 8 b are a kind of left view of the bearing unit of biserial differential concatenation setting in embodiment 3；
Fig. 8 c and Fig. 8 d are the left view of the bearing unit of another biserial differential concatenation setting in embodiment 3；
Fig. 9 a and Fig. 9 b are a kind of left view of the bearing unit of multiple row differential concatenation setting in embodiment 3；
Fig. 9 c and Fig. 9 d are the left view of the bearing unit of another multiple row differential concatenation setting in embodiment 3；
Figure 10 is the stereogram of eccentric outer shroud Horizontal permanent-magnetic bearing in embodiment 4；
Figure 10 a are the front view of eccentric outer shroud Horizontal permanent-magnetic bearing in embodiment 4；
Figure 11 a and Figure 11 b are the left view of single-row bearing unit in embodiment 4；
Figure 12 is the left view for the eccentric outer shroud Horizontal permanent-magnetic bearing that double-row bearing unit is constituted in embodiment 5；
Figure 12 a and Figure 12 b are the left view for the bearing unit that biserial is arranged in series in embodiment 5；
Figure 13 a and Figure 13 b are the left view for the bearing unit that Multi-row serial is arranged in embodiment 5；
Figure 14 a and Figure 14 b are the left view for the bearing unit that biserial differential concatenation is arranged in embodiment 6；
Figure 15 a and Figure 15 b are the left view for the bearing unit that multiple row differential concatenation is arranged in embodiment 6；
Figure 16 is the load-deflection curve figure of eccentric outer shroud Horizontal permanent-magnetic bearing and concentric outer shroud Horizontal permanent-magnetic bearing；
Figure 17 is the stiffness characteristics curve graph of eccentric outer shroud Horizontal permanent-magnetic bearing and concentric outer shroud Horizontal permanent-magnetic bearing.
Reference numeral in figure, 1- bias outer shrouds, the concentric outer shrouds of 1.1-, half arc-shaped permanent magnets of 1.2-；2- axis fixes magnet,
2a- magnet rings, 2b- magnet steel；3- clads；4- bearings；5- casings；6- axis；7- bushings；8- retaining mechanisms；9- cushion blocks.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1：
A kind of bias outer shroud Horizontal permanent-magnetic bearing, including float, eccentric outer shroud 1 and bearing 4, the float include one
Axis fixes magnet 2, and the axis is fixed magnet 2 and is arranged in the inside of eccentric outer shroud 1, and eccentric outer shroud 1 is fixedly connected with bearing 4, branch
Seat 4 is fixed on the table.In eccentric outer shroud top the distance between outer circle and inner circle be less than between bottom cylindrical and inner circle away from
From, and eccentric outer shroud 1 is permanent magnet.
It should be noted that the distance between outer circle and inner circle are bigger in eccentric outer shroud, show that it fixes magnet to axis
Thrust is bigger；Corresponding, the distance between outer circle and inner circle are smaller in eccentric outer shroud, show that it is fixed axis the thrust of magnet and gets over
It is small.Top and bottom the distance between outer circle and inner circle size can be determined according to load load-carrying in eccentric outer shroud.
In the present embodiment, eccentric outer shroud 1 fixes magnet 2 with axis and constitutes a bearing unit structure, as illustrated in fig. 1 and 2.For
It is easy to process, eccentric outer shroud 1 can also by concentric outer shroud 1.1 and setting 1.1 bottom of concentric outer shroud and it is magnetic with
1.1 half consistent arc-shaped permanent magnet 1.2 of concentric outer shroud is constituted, as shown in Figure 1a.Wherein, it is magnet ring 2a that axis, which fixes magnet 2, is such as schemed
3, shown in 4a and 4b, axis 6 with magnet ring 2a through being fixedly connected after magnet ring 2a.The float further includes bushing 7 and retaining mechanism
8, bushing 7 is arranged between magnet ring 2a and axis 6, and by being adhesively fixed, retaining mechanism 8 is arranged in bushing 7 bushing 7 and magnet ring 2a
It is external.In the present embodiment, retaining mechanism is the clamp ring of an opening, and clamp ring is set in outside bushing 7, is fastened by bolts lock
The opening of collar makes clamp ring fasten axis 6 and bushing 7.In order to further increase the corrosion resistance of Permanent-magnet bearing, extension makes
With the service life, magnet ring 2a and the surface of eccentric outer shroud 1 are both provided with clad 3.In the present embodiment, clad 3 is plastic clad.
Magnet ring 2a is axial magnet with eccentric outer shroud 1, to generate axial magnetic field, as shown in figure 5a and 5b.From rigidity
Character Comparison curve is it is found that under same hoverheight variable, the rigidity of single-row bias outer shroud Horizontal permanent-magnetic bearing and single-row same
The rigidity of heart outer shroud Horizontal permanent-magnetic bearing is close, as shown in curve (a) (b) in Figure 16；From stiffness characteristics correlation curve it is found that
Under same hoverheight, the magnetic suspension thrust of curve (a) is more than the magnetic suspension thrust of curve (b) in Figure 17, i.e., single-row eccentric outer
The stiffness of ring Horizontal permanent-magnetic bearing is more than the stiffness of single-row concentric outer shroud Horizontal permanent-magnetic bearing.Certainly, magnet ring 2a and eccentric outer shroud 1
Can also be radial magnet, to generate radial magnetic field, as shown in figures 5 c and 5d.It should be noted that generating radial magnetic field
Single-row eccentric outer shroud Horizontal permanent-magnetic bearing load-deflection curve with stiffness characteristics curve approximation in the list for generating axial magnetic field
The load-deflection curve and stiffness characteristics curve of the eccentric outer shroud Horizontal permanent-magnetic bearing of row, i.e., under same hoverheight variable, production
The rigidity of the single-row eccentric outer shroud Horizontal permanent-magnetic bearing of raw radial magnetic field and the single-row concentric outer shroud for generating radial magnetic field are horizontal forever
The rigidity of magnetic bearing is also close；Under same hoverheight, the single-row eccentric outer shroud Horizontal permanent-magnetic bearing of radial magnetic field is generated
Stiffness is more than the stiffness for the single-row concentric outer shroud Horizontal permanent-magnetic bearing for generating radial magnetic field.
Embodiment 2：
Eccentric outer shroud is constituted in order to improve the rigidity and stiffness of Permanent-magnet bearing, in the present embodiment using double-row bearing unit to crouch
Formula Permanent-magnet bearing, double-row bearing unit middle magnetic ring 2a are axial magnet with eccentric outer shroud 1.In magnetic field structure, double-row bearing
It is arranged in series between unit, as shown in figure 6 a and 6b.In addition to this, other structures are the same as embodiment 1.From stiffness characteristics correlation curve
It is found that under same hoverheight variable, the rigidity of eccentric outer shroud Horizontal permanent-magnetic bearing that biserial is arranged in series and biserial series connection
The rigidity for the concentric outer shroud Horizontal permanent-magnetic bearing being arranged is close, as shown in curve (c) (d) in Figure 16；It is compared from stiffness characteristics bent
For line it is found that under same hoverheight, the magnetic suspension thrust of curve (c) is more than the magnetic suspension thrust of curve (d) in Figure 17, i.e., double
The stiffness for arranging the eccentric outer shroud Horizontal permanent-magnetic bearing being arranged in series is more than the concentric outer shroud Horizontal permanent-magnetic bearing that biserial is arranged in series
Stiffness.And the concentric outer shroud Horizontal permanent-magnetic axis that the eccentric outer shroud Horizontal permanent-magnetic bearing that is arranged in series of biserial is arranged in series with biserial
The stiffness held is all higher than the stiffness of the stiffness and single-row concentric outer shroud Horizontal permanent-magnetic bearing of single-row eccentric outer shroud Horizontal permanent-magnetic bearing.
Certainly, double eccentric outer shroud Horizontal permanent-magnetic bearing middle magnetic ring 2a and eccentric outer shroud 1 can also be radial magnet.
In magnetic field structure, it is arranged in series between double-row bearing unit, as described relative to figs. 6c and 6d.It should be noted that generating radial magnetic field
The load-deflection curve of eccentric outer shroud Horizontal permanent-magnetic bearing that is arranged in series of biserial and stiffness characteristics curve with generate axial magnetic
The load-deflection curve for the eccentric outer shroud Horizontal permanent-magnetic bearing that the biserial of field is arranged in series is similar to stiffness characteristics curve.I.e. same
Etc. under hoverheights variable, generate rigidity and the generation of the eccentric outer shroud Horizontal permanent-magnetic bearing that the biserial of radial magnetic field is arranged in series
The rigidity for the concentric outer shroud Horizontal permanent-magnetic bearing that the biserial of radial magnetic field is arranged in series is also close；Under same hoverheight, production
The stiffness for the eccentric outer shroud Horizontal permanent-magnetic bearing that the biserial of raw radial magnetic field is arranged in series is more than the biserial string for generating radial magnetic field
Join the stiffness of the concentric outer shroud Horizontal permanent-magnetic bearing of setting.
It is, of course, also possible to which more multiple row bearing unit is arranged, multirow bearing unit middle magnetic ring can be axis with eccentric outer shroud
Can also be radial magnet to magnet.In magnetic field structure, can be arranged in series between adjacent bearing unit, as Fig. 7 a,
Shown in 7b, 7c, 7d.
Embodiment 3：
Eccentric outer shroud is constituted in order to further increase the stiffness of Permanent-magnet bearing, in the present embodiment using double-row bearing unit to crouch
Formula Permanent-magnet bearing, double-row bearing unit middle magnetic ring 2a are axial magnet with eccentric outer shroud 1.In magnetic field structure, double-row bearing
Differential concatenation is arranged between unit, as shown in figs. 8 a and 8b.In addition to this, other structures are the same as embodiment 2.It is compared from stiffness characteristics
Curve it is found that under same hoverheight variable, the rigidity of the eccentric outer shroud Horizontal permanent-magnetic bearing of biserial differential concatenation setting and
The rigidity of the concentric outer shroud Horizontal permanent-magnetic bearing of biserial differential concatenation setting is close, as shown in curve (e) (f) in Figure 16.From strength
Character Comparison curve is spent it is found that under same hoverheight, and the magnetic suspension thrust of curve (e) is more than the magnetic of curve (f) in Figure 17
The stiffness of the eccentric outer shroud Horizontal permanent-magnetic bearing of suspension thrust, i.e. biserial differential concatenation setting is more than the setting of biserial differential concatenation
The stiffness of concentric outer shroud Horizontal permanent-magnetic bearing.And the eccentric outer shroud Horizontal permanent-magnetic bearing and biserial of the setting of biserial differential concatenation are reversed
The stiffness for the concentric outer shroud Horizontal permanent-magnetic bearing being arranged in series is all higher than the eccentric outer shroud Horizontal permanent-magnetic bearing that biserial is arranged in series
The stiffness for the concentric outer shroud Horizontal permanent-magnetic bearing being arranged in series with biserial.
Certainly, double-row bearing unit middle magnetic ring 2a and eccentric outer shroud 1 can also be radial magnet.In magnetic field structure,
Differential concatenation is arranged between double-row bearing unit, as shown in Fig. 8 c and 8d.It should be noted that the biserial for generating radial magnetic field is anti-
To the load-deflection curve and stiffness characteristics curve and generation axial magnetic field of the eccentric outer shroud Horizontal permanent-magnetic bearing being arranged in series
The load-deflection curve of the eccentric outer shroud Horizontal permanent-magnetic bearing of biserial differential concatenation setting is similar to stiffness characteristics curve.I.e. same
Etc. under hoverheights variable, generate the eccentric outer shroud Horizontal permanent-magnetic bearing of the biserial differential concatenation setting of radial magnetic field rigidity and
The rigidity for generating the concentric outer shroud Horizontal permanent-magnetic bearing of the biserial differential concatenation setting of radial magnetic field is also close；In the same height that suspends
Under degree, the stiffness for generating the eccentric outer shroud Horizontal permanent-magnetic bearing of the biserial differential concatenation setting of radial magnetic field is more than the radial magnetic of generation
The stiffness of the concentric outer shroud Horizontal permanent-magnetic bearing of the biserial differential concatenation setting of field.
It is, of course, also possible to which more multiple row bearing unit is arranged, multirow bearing unit middle magnetic ring 2a can be with eccentric outer shroud 1
Axial magnet can also be radial magnet.In magnetic field structure, differential concatenation between adjacent eccentric outer shroud Horizontal permanent-magnetic bearing
Setting, as shown in Fig. 9 a, 9b, 9c, 9d.
Embodiment 4：
Unlike in embodiment 1, it is magnet steel 2b that the present embodiment axis, which fixes magnet 2, described floating such as Figure 10 and 10a
Son further includes sleeve 5, and magnet steel 2b is fixedly installed on the inside of casing 5, and axis 6 is located in the both ends of magnet steel 2b and plug-in-sleeve 5
Portion.For the ease of fixation, by interference fit or by being welded and fixed between casing 5, axis 6 and magnet steel 2b.In order to extend forever
The surface of the service life of magnetic bearing, magnet steel 2b and eccentric outer shroud 1 is both provided with clad 3, and clad 3 is nickel in the present embodiment
Cupro-nickel electroplated layer.
Magnet steel 2b is axial magnet with eccentric outer shroud 1, to generate axial magnetic field, as shown in figures 11a and 11b；
Embodiment 5：
Eccentric outer shroud is constituted in order to improve the rigidity and stiffness of Permanent-magnet bearing, in the present embodiment using double-row bearing unit to crouch
Formula Permanent-magnet bearing, as shown in figure 12.Cushion block 9 is provided between biserial magnet steel.It is of course possible to by cushion block replace with radial magnet ring or
Person is directly not added with cushion block and is changed to air gap.Magnet steel 2b and eccentric outer shroud 1 are axial magnet in double-row bearing unit.In magnetic field structure
In, it is arranged in series between double-row bearing unit, as shown in figures 12 a and 12b.In addition to this, other structures are the same as embodiment 4.
For the corrosion resistance of further Permanent-magnet bearing, clad is ambrose alloy nickel electroplated layer and is coated in the present embodiment
Stainless steel coating layer outside ambrose alloy nickel electroplated layer.
It is, of course, also possible to which more multiple row bearing unit is arranged, magnet steel 2b and eccentric outer shroud 1 are axial direction in multirow bearing unit
Magnet.It in magnetic field structure, is arranged in series between adjacent bearing unit, as shown in Figure 13 a, 13b.
Embodiment 6：
Eccentric outer shroud is constituted in order to further increase the stiffness of Permanent-magnet bearing, in the present embodiment using double-row bearing unit to crouch
Formula Permanent-magnet bearing, magnet steel 2b and eccentric outer shroud 1 are axial magnet in double-row bearing unit.In magnetic field structure, double-row bearing
Differential concatenation is arranged between unit, as shown in figure 14 a and 14b.In addition to this, other structures are the same as embodiment 4.
It is, of course, also possible to which more multiple row bearing unit is arranged, multirow bearing unit middle magnetic ring 2b can be with eccentric outer shroud 1
Axial magnet.In magnetic field structure, differential concatenation is arranged between adjacent bearing unit, as shown in Figure 15 a, 15b.
It should be noted that the eccentric outer shroud Horizontal permanent-magnetic bearing that magnet is magnet steel is fixed for axis, it is either single-row to go back
It is double eccentric outer shroud Horizontal permanent-magnetic bearing, the eccentric outer shroud Horizontal permanent-magnetic bearing or biserial that either biserial is arranged in series are anti-
To the eccentric outer shroud Horizontal permanent-magnetic bearing being arranged in series, load-deflection curve and stiffness characteristics curve with Figure 16 and Figure 17,
Details are not described herein.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of bias outer shroud Horizontal permanent-magnetic bearing, it is characterised in that：Including float, eccentric outer shroud and bearing, the float
Including an axis fixes magnet, the axis is fixed magnet and is arranged in the inside of eccentric outer shroud, and the bias outer shroud is fixed with bearing to be connected
It connecing, the distance between outer circle and inner circle are less than eccentric the distance between outer shroud bottom cylindrical and inner circle at the top of the bias outer shroud,
And eccentric outer shroud is permanent magnet.
2. eccentric outer shroud Horizontal permanent-magnetic bearing according to claim 1, it is characterised in that：It is a magnetic that the axis, which fixes magnet,
Ring, axis with magnet ring through being fixedly connected after magnet ring.
3. eccentric outer shroud Horizontal permanent-magnetic bearing according to claim 2, it is characterised in that：The float further include bushing and
Retaining mechanism, the lining is set on magnet ring and axis middle position, and is fixedly connected between magnet ring and bushing, the locking machine
Structure is arranged in the outside of bushing, and retaining mechanism fastens axis and bushing.
4. eccentric outer shroud Horizontal permanent-magnetic bearing according to claim 3, it is characterised in that：The magnet ring is with eccentric outer shroud
Axial magnet is radial magnet.
5. eccentric outer shroud Horizontal permanent-magnetic bearing according to claim 1, it is characterised in that：It is a magnetic that the axis, which fixes magnet,
Steel, the float further include sleeve, and the magnet steel is fixedly installed on the inside of casing, and axle position is set in the both ends of magnet steel and fixation
It is placed in inside pipe casing.
6. any one described eccentric outer shroud Horizontal permanent-magnetic bearing according to Claims 1 to 5, it is characterised in that：It is described eccentric outer
Ring fixes magnet with axis and constitutes a row bearing unit, and the bearing unit is arranged at least provided with two, adjacent two row bearing unit
Position is oppositely arranged, and the bearing unit is fixedly connected with pedestal.
7. eccentric outer shroud Horizontal permanent-magnetic bearing according to claim 6, it is characterised in that：It is set between adjacent two row bearing unit
It is equipped with cushion block or radial magnet ring.
8. eccentric outer shroud Horizontal permanent-magnetic bearing according to claim 7, it is characterised in that：In magnetic field structure, adjacent two row institute
Bearing unit is stated to be arranged in series or the bearing unit differential concatenation setting of adjacent two row.
9. any one described eccentric outer shroud Horizontal permanent-magnetic bearing according to Claims 1 to 5, it is characterised in that：The axis is fixed
The surface of magnet and eccentric outer shroud is both provided with clad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042784.2A CN108286569A (en) | 2018-01-17 | 2018-01-17 | Eccentric outer shroud Horizontal permanent-magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042784.2A CN108286569A (en) | 2018-01-17 | 2018-01-17 | Eccentric outer shroud Horizontal permanent-magnetic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108286569A true CN108286569A (en) | 2018-07-17 |
Family
ID=62835536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810042784.2A Pending CN108286569A (en) | 2018-01-17 | 2018-01-17 | Eccentric outer shroud Horizontal permanent-magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108286569A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003391A (en) * | 2020-08-20 | 2020-11-27 | 珠海格力电器股份有限公司 | Stator core, magnetic suspension bearing and motor |
| CN112908663A (en) * | 2019-11-19 | 2021-06-04 | 中核(天津)科技发展有限公司 | Method for improving magnetic eccentricity of annular magnet, annular magnet fixed with centering ring and application of annular magnet |
| CN114810824A (en) * | 2021-01-29 | 2022-07-29 | 迈格钠磁动力股份有限公司 | Three-degree-of-freedom permanent magnet suspension bearing and regulation and control method thereof |
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| CN114810824A (en) * | 2021-01-29 | 2022-07-29 | 迈格钠磁动力股份有限公司 | Three-degree-of-freedom permanent magnet suspension bearing and regulation and control method thereof |
| CN114810824B (en) * | 2021-01-29 | 2024-01-26 | 迈格钠磁动力股份有限公司 | Three-degree-of-freedom permanent magnet suspension bearing and regulating and controlling method thereof |
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Application publication date: 20180717 |