CN100460697C - Permanent magnet and turbo compound bearing - Google Patents
Permanent magnet and turbo compound bearing Download PDFInfo
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- CN100460697C CN100460697C CNB200610137653XA CN200610137653A CN100460697C CN 100460697 C CN100460697 C CN 100460697C CN B200610137653X A CNB200610137653X A CN B200610137653XA CN 200610137653 A CN200610137653 A CN 200610137653A CN 100460697 C CN100460697 C CN 100460697C
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- 150000001875 compounds Chemical group 0.000 title 1
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 230000005389 magnetism Effects 0.000 claims description 16
- 230000004907 flux Effects 0.000 claims description 14
- 238000007600 charging Methods 0.000 claims description 12
- 239000000725 suspension Substances 0.000 abstract description 21
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000010009 beating Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
本发明公开了一种永磁与涡轮复合轴承，解决现有磁悬浮轴承结构复杂、单位体积承载力小、运转稳定性差、应用受局限等问题。本发明由内套和外套组成，内套和外套上设置轴向充磁环形永磁体，外套上环形永磁体与内套上环形永磁体隔离一间隙同极性相对，从而使内套与外套因磁斥力而相对悬浮，所述内套(或外套)上两端分别配置一个涡轮，当内套(或外套)高速旋转时，涡轮将所处环境的流体旋压入内套和外套之间的间隙形成高压气垫或静液层，极大地遏制了内套和外套的相对跳动、摆动，从而极大地提高了轴承运转的稳定性、可靠性。本发明结构紧凑、刚度大、单位体积承载力大、运转稳定性高、用途广。
The invention discloses a permanent magnet and turbine composite bearing, which solves the problems of complex structure, small bearing capacity per unit volume, poor operation stability, limited application and the like of the existing magnetic suspension bearing. The invention is composed of an inner sleeve and an outer sleeve. The inner sleeve and the outer sleeve are provided with an axially magnetized ring-shaped permanent magnet. The ring-shaped permanent magnet on the outer sleeve is separated from the ring-shaped permanent magnet on the inner sleeve by a gap with the same polarity. Magnetic repulsion and relative suspension, the two ends of the inner sleeve (or outer sleeve) are respectively equipped with a turbine, when the inner sleeve (or outer sleeve) rotates at a high speed, the turbine spins the fluid in the environment into the gap between the inner sleeve and the outer sleeve Forming a high-pressure air cushion or static liquid layer greatly restrains the relative beating and swinging of the inner sleeve and the outer sleeve, thereby greatly improving the stability and reliability of the bearing operation. The invention has the advantages of compact structure, high rigidity, large bearing capacity per unit volume, high running stability and wide application.
Description
Technical field
The present invention relates to a kind of magnetic suspension bearing, particularly permanent magnetism and turbine composite bearing.
Background technique
The rotating sleeve of magnetic suspension bearing and fixed cover rely on that magnetic force is relative to suspend, do not have when therefore working abrasion, noiseless, pollution-free, not transmitting vibrations, exempt to lubricate, non-maintaining, the life-span is long.
Magnetic suspension bearing has electromagnetic type, magneto, electromagnet and permanent magnet combined type, permanent magnetism and high temperature superconductor combined type.The magnetic force that electromagnetic type utilizes electric current to produce makes suspend relative with overcoat of interior cover of bearing.Electromagnetic type magnetic bearing structure complexity, and need the complicated circuit control system of configuration one cover just can make its interior cover running reach satisfied precision and stability.The electromagnet and permanent magnet combined type is equally also very complicated.Permanent magnetism and high temperature superconductor combined type magnetic bearing structure are more complicated, and manufacture cost is high.The permanent magnetism type magnetic suspension bearing only makes suspend relative with overcoat of interior cover of bearing with the magnetic force of permanent magnet, in general, the magneto suspension bearing is simple in structure with respect to foregoing alternate manner suspension bearing, and cost is low.Existing magneto is (perhaps axial) magnetic suspension bearing radially, structure is also fairly simple, but the existing permanent magnetism type magnetic suspension bearing that has radial and axial magnetic suspension function simultaneously, structure is complicated, per unit volume bearing capacity (ratio of maximum load capacity and bearing volume) is little, more discontented is because component manufacturing and assembly error are inevitable, stability is poor when causing bearing to run up, be circular runout and axial runout severity, even pivoted housing can take place and fixed cover collides or scratches, so poor practicability is difficult to be applied to wide field.
Summary of the invention
The objective of the invention is to solve problems such as existing magnetic bearing structure complexity, the per unit volume bearing capacity is little, stability is poor when running up, application is limited to, designed a kind of permanent magnetism and turbine composite bearing, compact structure, rigidity are greatly, the per unit volume bearing capacity is big, run stability is high, purposes is wide.
The present invention is achieved through the following technical solutions:
The present invention is made up of interior cover and overcoat, interior cover and put outward the axial charging annular permanent magnet is set, put outward annular permanent magnet with in put annular permanent magnet to isolate a gap same polarity relative, described in cover (or overcoat) two ends a turbine is set respectively.
Be with the non magnetic axle sleeve of a supporting revolving shaft in described, a turbine is overlapped at the axle sleeve two ends respectively admittedly, admittedly overlap on the cylindrical of axle sleeve middle part one or more (number according to bearing shaft to bearing capacity radially, the size of bearing requires and the technological requirement that magnetizes is determined) annular permanent magnet of axial charging, be called internal magnetic ring, if internal magnetic ring is a plurality of, the size of internal magnetic ring then, magnetizing direction and performance parameter are identical, the magnetic conduction pad of a suitable thickness of folder between adjacent two, circular diameter equates with the interior circular diameter of internal magnetic ring in it, its outside diameter is littler than the outside diameter of internal magnetic ring, to strengthen the radially branch magnetic force on the cylindrical of internal magnetic ring two ends; If the radially branch magnetic force on the cylindrical of internal magnetic ring two ends is enough big, the cylindrical of magnetic conduction pad can be identical with the cylindrical size of internal magnetic ring so.Non magnetic axle sleeve, turbine, internal magnetic ring constitute interior cover of the present invention.
Leave the annular permanent magnet that gap cover axially magnetizes outside the cylindrical of described internal magnetic ring, be called for short the first magnet ring, its number equates that with the number of internal magnetic ring the size and the performance parameter of all first magnet rings are identical, and its magnetizing direction is identical with the magnetizing direction of internal magnetic ring; Magnetic conduction pad of folder between two adjacent first magnet rings, the thickness of the magnetic conduction pad between its thickness and the internal magnetic ring is identical, its outside diameter equates with the outside diameter of first magnet ring, circular diameter is bigger than every of the interior circular diameter of first magnet ring in it, to strengthen the radially branch magnetic force on the circle in the outer magnetic ring two ends; If the radially branch magnetic force in the outer magnetic ring two ends on the circle is enough big, the interior circle of magnetic conduction pad can be identical with the interior circle size of outer magnetic ring so; On two exterior edge faces of the first magnet ring group that a plurality of first magnet rings are formed, dispose the magnetic conduction pad of a suitable thickness respectively, its inside and outside circle diameter is identical with magnetic conduction pad between the two first magnet rings; The exterior edge face of being close to each magnetic conduction pad disposes the annular permanent magnet of an axial charging respectively, is called for short the second magnet ring, and the size of two second magnet rings, magnetizing direction and performance parameter are identical with the first magnet ring; The annular permanent magnet of an axial charging of circle configuration in each second magnet ring, be called for short third magnet ring, the size and the performance parameter of two third magnet rings are identical, but magnetizing direction is opposite with the first magnet ring, the interior edge face of two third magnet rings outwards leaves internal magnetic ring end face one gap respectively along axial direction, and relative with internal magnetic ring end face same polarity, and the cylindrical of third magnet ring pastes mutually with the interior circle of second magnet ring, the interior circle of third magnet ring is than every big gap of cylindrical of non magnetic axle sleeve, the end face of third magnet ring and second magnet ring; There is the magnetic conduction disk of bellmouth orifice at center of configuration on the outside end face of third magnet ring and second magnet ring, the end diameter of bellmouth orifice is identical with the interior circular diameter size of third magnet ring, do not wipe when the Outside diameter size of bellmouth orifice guarantees turbine rotation and bump the loudspeaker hole wall, the cylindrical of magnetic conduction disk is identical with the cylindrical of first magnet ring and second magnet ring; On the cylindrical of cylindrical, first magnet ring and the second magnet ring of magnetic conduction disk, overlap a non-magnetic cylinder admittedly, the end face of its end face and magnetic conduction disk; Magnetic conduction disk, first magnet ring, second magnet ring, third magnet ring, non-magnetic cylinder constitute overcoat of the present invention.
If a plurality of internal magnetic rings, a plurality of first magnet ring respectively vertically directly mutually and after radially magnetic component big to meeting the demands, can remove the magnetic conduction pad.
During assembling, interior cover and overcoat peace are required to compress vertically, under cooling protection, take welding procedure that non-magnetic cylinder and magnetic conduction disk are welded then, also can use Bolt Connection with the pressure frock.
The direction of the main flux in the described overcoat is inhour (or clockwise), the internal magnetic ring of interior cover is surrounded by first magnet ring, second magnet ring, internal magnetic ring, its main flux direction is opposite with the flow direction of third magnet ring, but its main flux direction main flux direction with the first magnet ring again is identical, be that internal magnetic ring is axially relative with the third magnet ring same polarity, axially consistent with first magnet ring magnetizing direction and parallel relative.
Because make the annular permanent magnet of forming internal magnetic ring at material, shape, size, aspects such as performance parameter are identical, the first magnet ring is at material, shape, size, aspects such as performance parameter are identical, the second magnet ring is at material, shape, size, side such as performance parameter is identical, third magnet ring is at material, shape, size, aspects such as performance parameter are identical, annular permanent magnet in of the present invention in the cover is relative in radial and axial same polarity always with the annular permanent magnet in the overcoat, so in of the present invention, be enclosed within outward and radially produce identical magnetic repulsion, axially also producing identical magnetic repulsion, then in, be enclosed within outward radially, axially has relative suspension stability.
The carrier of the interior interplanting supporting rotating shaft of described bearing, overcoat is as fixed cover; As if the turbine that puts in removing, design the hole and the nest of turbine and magnetic conduction disk in addition, turbine and magnetic conduction disk is affixed, and described interior cover also can be made the fixed cover of support fixation axle, and overcoat is as rotating sleeve, and the function of promptly interior cover, overcoat can be exchanged simultaneously.
Remove second, third magnet ring on the described overcoat magnetic conduction disk, the axial dimension of axle sleeve and non-magnetic cylinder is shortened the axial dimension of twice second magnet ring (or third magnet ring), simplified bearing structure like this, but the bearing axial bearing capacity has reduced, and such bearing is applicable to axial bearing capacity is required low occasion.
If the rotating speed of supported rotating shaft is low in the practical application, beat and swing very for a short time, perhaps in vacuum environment, so, application the present invention need not dispose turbine, becomes pure permanent-magnet suspension bearing.
According to actual needs, the quantity changeable of described bearing internal magnetic ring, first magnet ring.
The effect that the present invention is useful is:
1. from overall structure: first, the main flux of adjacent annular permanent magnet is connected by the magnetic conduction pad in overlapping in of the present invention, the main flux of each annular permanent magnet links to each other with the magnetic conduction disk by the magnetic conduction pad and is connected into semiclosed shape in the overcoat, so leakage field is little, and magnet utilization ratio height.Second, remove crack and turbine influent stream gap between the inside and outside cover, there is not any space again, extremely many permanent magnets have been assembled in the inner space of bearing, if do not dispose turbine, become pure permanent-magnet suspension bearing, compare with the existing magnetic suspension bearing that has radial and axial bearing function simultaneously, the present invention is simple and compact for structure, and the per unit volume bearing capacity is big, rigidity is big; If configuration turbine, compare with the more existing magnetic suspension bearing that has radial and axial bearing function simultaneously, structure of the present invention is still simple, compare with existing other similar bearing, structure of the present invention is perhaps complicated a bit, but the configuration turbine has improved the performance (seeing useful effect explanation 2) of magnetic suspension bearing widely, has widened its application area.The 3rd, the good manufacturability of the annular permanent magnet of axial charging, magnetic conduction pad, magnetic conduction disk and non-magnetic cylinder.
2. when overlapping (or overcoat) high speed rotating in the present invention, the turbine at two ends, the gap that fluid (not corroding the surface-treated metal and the fluid of permanent magnet: as air, inert gas, light water, the liquid wet goods) spinning of environment of living in is gone between interior cover and the overcoat forms high pressure air cushion or quiet liquid layer, greatly strengthened the relative suspending power of interior cover and overcoat, contained that greatly the relative of interior cover and overcoat beat, swing, the rotating speed of axle is high more, effect is good more, thereby has greatly improved stability, the reliability of bearing operation.
3. the present invention is not if dispose turbine, and based on the actual application requirements, crack between cover, the overcoat in the design both can be used as single-acting shock absorber or damper and used, and can be used as multidirectional absorber or damper again and used.
Description of drawings
Fig. 1 is the structural representation of embodiment of the present invention 1;
Fig. 2 is the structural representation of embodiment of the present invention 2;
Fig. 3 is the structural representation of embodiment of the present invention 3;
Fig. 4 is the structural representation of embodiment of the present invention 4;
Fig. 5 is the structural representation of embodiment of the present invention 5;
Fig. 6 is the structural representation of embodiment of the present invention 6;
Fig. 7 is the structural representation of embodiment of the present invention 7;
Fig. 8 is the structural representation of embodiment of the present invention 8;
Fig. 9 is the structural representation of embodiment of the present invention 9.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
Mode of execution 1: show the permanent magnetism internal magnetic ring 2 of affixed axial charging and internal magnetic ring 3 on the non magnetic axle sleeve 7 of back shaft as Fig. 1.Between internal magnetic ring 2 and internal magnetic ring 3, clip a suitable thickness magnetic conduction pad 18, circle size is identical with the interior circle of internal magnetic ring in it, its outside diameter is than every of the outside diameter a little bit smaller (not drawing among the figure) of internal magnetic ring, to strengthen the radially branch magnetic force on internal magnetic ring 2, the internal magnetic ring 3 two ends cylindricals; If the radially branch magnetic force on internal magnetic ring 2, the internal magnetic ring 3 two ends cylindricals is enough big, the cylindrical of magnetic conduction pad 18 can be made identical with the cylindrical size of internal magnetic ring so.Admittedly overlap a turbine 6 and 17 respectively at non magnetic axle sleeve 7 two ends, axle sleeve, turbine, internal magnetic ring have constituted interior cover of the present invention.
Leave the bearing play outside the cylindrical of internal magnetic ring, the annular permanent magnet 11,12 that cover axially magnetizes is called for short the first magnet ring, and its magnetizing direction is identical with the magnetizing direction of internal magnetic ring 2,3.Between first magnet ring 11 and first magnet ring 12, clip the thickness magnetic conduction pad 16 identical with the thickness of magnetic conduction pad 18, the cylindrical size of magnetic conduction pad 16 is identical with the cylindrical of first magnet ring, and interior circular diameter (does not draw among the figure) more greatly than every of the interior circular diameter of first magnet ring.Be close to suitable thickness magnetic conduction pad 8,15 its outside diameters respectively and equate with the outside diameter of first magnet ring on the exterior edge face of first magnet ring 11,12, circular diameter (does not draw among the figure) more greatly than every of the interior circular diameter of first magnet ring in it.The exterior edge face of being close to magnetic conduction pad 8,15 disposes the annular permanent magnet 10,13 of an axial charging respectively, is called for short the second magnet ring, and the size of two second magnet rings, magnetizing direction and performance parameter are identical with the first magnet ring.Outside the exterior edge face of internal magnetic ring 2,3, dispose the annular permanent magnet 1,4 of two identical axial chargings symmetrically, be called for short third magnet ring, the interior edge face of two third magnet rings outwards leaves gap size of internal magnetic ring 2,3 end faces respectively along axial direction, and third magnet ring 1,4 is identical with internal magnetic ring 2,3 opposing end faces polarity; The cylindrical of two third magnet rings 1,4 pastes mutually with the interior circle of second magnet ring 10,13, the end face of third magnet ring and second magnet ring.Outside end face at third magnet ring 1,4 and second magnet ring 10,13 disposes the magnetic conduction disk 5,14 that there is bellmouth orifice at a center respectively, the end diameter of bellmouth orifice is identical with the interior circular diameter size of third magnet ring 1,4, the Outside diameter of bellmouth orifice size guarantees not wipe when turbine 6,17 is put into bumps the loudspeaker hole wall and is advisable, and the cylindrical of magnetic conduction disk 5,14 is identical with the cylindrical of first magnet ring 11,12 and second magnet ring 10,13.At the cylindrical of magnetic conduction disk 5,14 and non-magnetic cylinder 9 of solid cylindrical sleeve of first magnet ring 11,12 and second magnet ring 10,13, the end face of its end face and magnetic conduction disk 5,14,9 anastomosis of non-magnetic cylinder. Magnetic conduction disk 5 and 14, first magnet ring 11 and 12, second magnet ring 10 and 13, third magnet ring 1 and 4, non-magnetic cylinder 9 have constituted overcoat of the present invention.
During assembling, interior cover and overcoat peace are required to compress vertically, under cooling protection, take welding procedure that non-magnetic cylinder and magnetic conduction disk are welded, also available Bolt Connection then with the pressure frock.
A plurality of internal magnetic rings, a plurality of first magnet ring respectively vertically directly mutually and after radially magnetic component big to meeting the demands, can remove the magnetic conduction pad.
The direction of the main flux in the described overcoat is inhour (or clockwise), the internal magnetic ring 2,3 of interior cover is surrounded by first magnet ring 11 and 12, second magnet ring 10 and 13, third magnet ring 1 and 4, the main flux direction of internal magnetic ring 2,3 is opposite with the flow direction of third magnet ring 1 and 4, but its main flux direction main flux direction with first magnet ring 11 and 12 again is identical, be that internal magnetic ring 2,3 is axially relative with 4 same polarities with third magnet ring 1, axially consistent with 12 magnetizing directions with first magnet ring 11 and parallel relative; Because make internal magnetic ring 2,3 at material, shape, size, aspects such as performance parameter are identical, first magnet ring 11 and 12 is at material, shape, size, aspects such as performance parameter are identical, second magnet ring 10 and 13 is at material, shape, size, side such as performance parameter is identical, third magnet ring 1 and 4 is at material, shape, size, aspects such as performance parameter are identical, annular permanent magnet in of the present invention in the cover is relative in radial and axial same polarity always with the annular permanent magnet in the overcoat, so in of the present invention, be enclosed within outward and radially produce the magnetic repulsion that equates, axially also producing the magnetic repulsion that equates, in making, be enclosed within outward radially, axially has relative suspension stability.
Present embodiment is removed crack and turbine influent stream gap between the inside and outside cover, does not have any space again, and extremely many permanent magnets have been assembled in the inner space of bearing, and are simple and compact for structure, so per unit volume bearing capacity of the present invention is big, rigidity is big.
Put the turbine 6 and 17 at two ends in the present embodiment, with the axle high speed rotating that will support, the gap that fluid (not corroding the surface-treated metal and the fluid of permanent magnet: as air, inert gas, light water, the liquid wet goods) spinning of bearing environment of living in is gone between interior cover and the overcoat forms high pressure air cushion or quiet liquid layer, greatly strengthened the relative suspending power of interior cover and overcoat, contained that greatly the relative of interior cover and overcoat beat, swing, the rotating speed of axle is high more, effect is good more, thereby has greatly improved stability, the reliability of bearing operation.
Mode of execution 2: show as Fig. 2.When the needs bearing outside rotates, and when interior cover is fixed, non magnetic pivoted housing 19, magnetic conduction disk 20 and 22, turbine 21 and 23 shown in non magnetic pivoted housing 7 in the mode of execution 1, magnetic conduction disk 5 and 14, turbine 6 and 17 corresponding Fig. 2 of making into are shown, and make turbine 21 and 23 affixed with magnetic conduction disk 20 and 22 respectively, make the interior circle of turbine 21 and 23 and the cylindrical of pivoted housing 19 separate a gap.
Mode of execution 3: show as Fig. 3.If the rotating speed of supported rotating shaft is low in the reality, beat and swing very for a short time, perhaps in vacuum environment, so, use mode of execution 1 or 2 described bearings need not dispose turbine, become pure permanent-magnet suspension bearing.Non magnetic pivoted housing 24, magnetic conduction disk 25 and 26 shown in non magnetic pivoted housing 7 in the mode of execution 1, magnetic conduction disk 5 and 14 corresponding Fig. 3 of making into are shown.
Mode of execution 4: show as Fig. 4.Internal magnetic ring, first magnet ring are made one respectively, and promptly internal magnetic ring is 27, and the first magnet ring becomes 28.
Mode of execution 5: show as Fig. 5.Bearing for mode of execution 4, when the needs bearing outside rotates, and when interior cover is fixed, non magnetic pivoted housing 19, magnetic conduction disk 20 and 22, turbine 21 and 23 shown in non magnetic pivoted housing 7 in the mode of execution 1, magnetic conduction disk 5 and 14, turbine 6 and 17 corresponding Fig. 2 of making into are shown, and make turbine 21 and 23 affixed with magnetic conduction disk 20 and 22 respectively, make the interior circle of turbine 21 and 23 and the cylindrical of pivoted housing 19 separate a gap.
Mode of execution 6: show as Fig. 6.If the rotating speed of supported rotating shaft is low in the reality, beat and swing very for a short time, perhaps in vacuum environment, so, use mode of execution 4 or 5 described bearings need not dispose turbine, become pure permanent-magnet suspension bearing.Non magnetic pivoted housing 24, magnetic conduction disk 25 and 26 shown in non magnetic pivoted housing 7 in the mode of execution 1, magnetic conduction circle magnetic 5 and 14 corresponding Fig. 3 of making into are shown.
Mode of execution 7: show as Fig. 7. Second magnet ring 10 and 13, third magnet ring 1 and 4, magnetic conduction pad 8 and 15 in the mode of execution 4 (not marked piece number is identical with piece number shown in Figure 1 in 4) are removed, and with internal magnetic ring 27, first magnet ring 28 after two ends prolong a second magnet ring (or third magnet ring) thickness size respectively (precondition of making like this is that the magnet ring thickness after changing is not difficult when it is magnetized) vertically, internal magnetic ring 27 and first magnet ring 28 become 30 and 29 respectively, and such bearing structure is simple.
Mode of execution 8: show as Fig. 8.Bearing for mode of execution 7, when the needs bearing outside rotates, and when interior cover is fixed, non magnetic pivoted housing 19, magnetic conduction disk 20 and 22, turbine 21 and 23 shown in non magnetic pivoted housing 7 in the mode of execution 1, magnetic conduction disk 5 and 14, turbine 6 and 17 corresponding Fig. 2 of making into are shown, and make turbine 21 and 23 affixed with magnetic conduction disk 20 and 22 respectively, make the interior circle of turbine 21 and 23 and the cylindrical of non magnetic pivoted housing 19 separate a gap.
Mode of execution 9: show as Fig. 9.If the rotating speed of supported rotating shaft is low in the reality, beat and swing very for a short time, perhaps in vacuum environment, so, use mode of execution 7 or 8 described bearings need not dispose turbine, become pure permanent-magnet suspension bearing.Non magnetic pivoted housing 24, magnetic conduction disk 25 and 26 shown in pivoted housing 7 in the mode of execution 1, magnetic conduction disk 5 and 14 corresponding Fig. 3 of making into show.
Claims (8)
1. permanent magnetism and turbine composite bearing, it is characterized in that: this bearing is made up of interior cover and overcoat, interior cover is provided with axial charging annular permanent magnet with putting outward, put outward annular permanent magnet with in put annular permanent magnet to isolate a gap same polarity relative, described in cover or overcoat two ends a turbine is set respectively.
2. permanent magnetism according to claim 1 and turbine composite bearing, it is characterized in that: bearing has the non magnetic axle sleeve of a supporting revolving shaft, a turbine is overlapped at the axle sleeve two ends respectively admittedly, admittedly overlap the annular permanent magnet of one or more axial chargings on the cylindrical of non magnetic axle sleeve middle part, be called internal magnetic ring, the size of internal magnetic ring, magnetizing direction and performance parameter are identical, if internal magnetic ring is a plurality of, magnetic conduction pad of folder between adjacent two, circular diameter equates that with the interior circular diameter of internal magnetic ring its outside diameter is littler than the outside diameter of internal magnetic ring in it; Non magnetic axle sleeve, turbine, internal magnetic ring constitute the interior cover of described bearing.
3. permanent magnetism according to claim 1 and turbine composite bearing, it is characterized in that: outside the cylindrical of internal magnetic ring, leave the annular permanent magnet that gap cover axially magnetizes, be called for short the first magnet ring, its number equates with the number of internal magnetic ring, the size and the performance parameter of all first magnet rings are identical, and its magnetizing direction is identical with the magnetizing direction of internal magnetic ring; Magnetic conduction pad of folder between two adjacent first magnet rings, the thickness of the magnetic conduction pad between its thickness and the internal magnetic ring is identical, and its outside diameter equates with the outside diameter of first magnet ring, and its interior circular diameter is than every of the interior circular diameter of first magnet ring greatly; On two exterior edge faces of the first magnet ring group that a plurality of first magnet rings are formed, dispose respectively one with two first magnet rings between the identical magnetic conduction pad of magnetic conduction pad; The exterior edge face of being close to each pad disposes the annular permanent magnet of an axial charging respectively, is called for short the second magnet ring, and the size of two second magnet rings, magnetizing direction and performance parameter are identical with the first magnet ring; The annular permanent magnet of an axial charging of circle configuration in each second magnet ring, be called for short third magnet ring, the size and the performance parameter of two third magnet rings are identical, but magnetizing direction is opposite with the first magnet ring, the interior edge face of two third magnet rings outwards leaves internal magnetic ring end face one gap respectively along axial direction, and relative with internal magnetic ring end face same polarity, and the cylindrical of third magnet ring pastes mutually with the interior circle of second magnet ring, the interior circle of third magnet ring is than every big gap of cylindrical of non magnetic axle sleeve, the end face of third magnet ring and second magnet ring; There is the magnetic conduction disk of bellmouth orifice at center of configuration on the outside end face of third magnet ring and second magnet ring, the end diameter of bellmouth orifice is identical with the interior circular diameter size of third magnet ring, do not wipe when the Outside diameter size of bellmouth orifice guarantees turbine rotation and bump the loudspeaker hole wall, the cylindrical of magnetic conduction disk is identical with the cylindrical of first magnet ring and second magnet ring; On the cylindrical of cylindrical, first magnet ring and the second magnet ring of magnetic conduction disk, overlap a non-magnetic cylinder admittedly, the end face of its end face and magnetic conduction disk; Magnetic conduction disk, first magnet ring, second magnet ring, third magnet ring, non-magnetic cylinder constitute the overcoat of described bearing.
4. permanent magnetism according to claim 3 and turbine composite bearing is characterized in that: if a plurality of internal magnetic rings, a plurality of first magnet ring respectively vertically directly mutually and after radially magnetic component big to meeting the demands, can remove the magnetic conduction pad.
5. permanent magnetism according to claim 3 and turbine composite bearing, it is characterized in that: the direction of the main flux in the overcoat is an inhour or clockwise, the internal magnetic ring of interior cover is surrounded by first magnet ring, second magnet ring, third magnet ring, its main flux direction is opposite with the flow direction of third magnet ring, but its main flux direction main flux direction with the first magnet ring again is identical, be that internal magnetic ring is axially relative with the third magnet ring same polarity, axially consistent with first magnet ring magnetizing direction and parallel relative.
6. permanent magnetism according to claim 3 and turbine composite bearing is characterized in that: the carrier of the interior interplanting supporting rotating shaft of bearing, and overcoat is as fixed cover; As if the turbine that puts in removing, design the hole and the nest of turbine and magnetic conduction disk in addition, turbine and magnetic conduction disk is affixed, and described interior cover also can be made the fixed cover of support fixation axle, and overcoat is as rotating sleeve, and the function of promptly interior cover, overcoat can be exchanged simultaneously.
7. permanent magnetism according to claim 3 and turbine composite bearing is characterized in that: can remove second, third magnet ring in the described bearing outside, simultaneously the axial dimension of axle sleeve and non-magnetic cylinder be shortened the axial dimension of twice second magnet ring.
8. permanent magnetism according to claim 3 and turbine composite bearing is characterized in that: according to actual needs, and the quantity changeable of internal magnetic ring, first magnet ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610137653XA CN100460697C (en) | 2006-11-02 | 2006-11-02 | Permanent magnet and turbo compound bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610137653XA CN100460697C (en) | 2006-11-02 | 2006-11-02 | Permanent magnet and turbo compound bearing |
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| Publication Number | Publication Date |
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| CN101070878A CN101070878A (en) | 2007-11-14 |
| CN100460697C true CN100460697C (en) | 2009-02-11 |
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| CNB200610137653XA Expired - Fee Related CN100460697C (en) | 2006-11-02 | 2006-11-02 | Permanent magnet and turbo compound bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571162B (en) * | 2008-05-04 | 2012-10-03 | 刘新广 | Non-equilibrium magnetic bearing |
| CN101619746B (en) * | 2008-07-02 | 2012-09-12 | 刘新广 | Nonequilibrium magnetic sliding bearing |
| CN104776119B (en) * | 2015-03-30 | 2017-10-10 | 刘金怀 | A kind of magnetic bearing |
| CN105909203B (en) * | 2016-04-14 | 2018-08-14 | 长江大学 | Electromagnetic damping hydraulic vibrating apparatus |
| CN113417940B (en) * | 2021-07-23 | 2022-04-01 | 中国工程物理研究院机械制造工艺研究所 | Vacuum preloading air floatation supporting structure and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0157526A2 (en) * | 1984-03-17 | 1985-10-09 | Isuzu Motors Limited | Reluctance rotary machine |
| CN2163266Y (en) * | 1993-08-25 | 1994-04-27 | 陶一飞 | Outer bearing ring split magneto floating bearing |
| CN2235042Y (en) * | 1995-03-13 | 1996-09-11 | 赵家文 | Permanent magnet magnetic bearing |
| JP2001099046A (en) * | 1999-10-01 | 2001-04-10 | Minoru Sugiyama | Generation system of simultaneously estinguishing generator weight and propeller rotor weight by magnetic levitation zero gravity structure |
-
2006
- 2006-11-02 CN CNB200610137653XA patent/CN100460697C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0157526A2 (en) * | 1984-03-17 | 1985-10-09 | Isuzu Motors Limited | Reluctance rotary machine |
| CN2163266Y (en) * | 1993-08-25 | 1994-04-27 | 陶一飞 | Outer bearing ring split magneto floating bearing |
| CN2235042Y (en) * | 1995-03-13 | 1996-09-11 | 赵家文 | Permanent magnet magnetic bearing |
| JP2001099046A (en) * | 1999-10-01 | 2001-04-10 | Minoru Sugiyama | Generation system of simultaneously estinguishing generator weight and propeller rotor weight by magnetic levitation zero gravity structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101070878A (en) | 2007-11-14 |
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