CN108869544A - Magnetic fluid bearing support construction - Google Patents

Magnetic fluid bearing support construction Download PDF

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Publication number
CN108869544A
CN108869544A CN201810921721.4A CN201810921721A CN108869544A CN 108869544 A CN108869544 A CN 108869544A CN 201810921721 A CN201810921721 A CN 201810921721A CN 108869544 A CN108869544 A CN 108869544A
Authority
CN
China
Prior art keywords
magnet ring
magnetic fluid
bearing support
array
fluid bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810921721.4A
Other languages
Chinese (zh)
Inventor
胡正东
戴庆文
王壮
胡焰
黄巍
王晓雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Original Assignee
Nanjing University of Aeronautics and Astronautics
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN201810921721.4A priority Critical patent/CN108869544A/en
Publication of CN108869544A publication Critical patent/CN108869544A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • 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
    • 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
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
    • 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
    • F16C2210/00—Fluids
    • F16C2210/02—Fluids defined by their properties
    • F16C2210/06—Fluids defined by their properties magnetic fluids

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The present invention provides a kind of magnetic fluid bearing support constructions, several magnet rings including forming array, and a pair of cornerwise magnet ring upper surface of magnet ring array is the pole N, and another pair magnet ring upper surface is the pole S；The ring axial magnetic magnetizes, and magnetic fluid is injected in magnet ring upper surface, and lower surface is sealed by matrix.There is between adjacent magnet ring spacing or tangent two-by-two in the magnet ring array.The present invention can generate support force by magnet ring array at double, by changing magnet ring array distribution, to further increase support force.

Description

Magnetic fluid bearing support construction
Technical field
The present invention relates to magnet fluid sealing and lubrication technical field, specifically a kind of magnetic fluid bearing support construction.
Background technique
For magnetic fluid as lubricant, the advantage relative to traditional liquid lubricant is that the former can be by external magnetic field It is attracted to predeterminated position, while still there is mobility（Prajapati BL. Magnetic-fluid-based porous squeeze films. Journal of Magnetism and Magnetic Materials 1995;149:97-100）. In addition, the magnetization of fluid and external magnetic field interact, to generate attraction on each particle.Since magnetic-particle is in liquid In stable suspersion, the magnetic force of attraction shows as the body force on liquid（Oldenburg CM, Borglin SE, Moridis GJ. Numerical simulation of ferrofluid flow for subsurface environmental engineering applications. Transport in Porous Media 2000;38:319-344）.Therefore, magnetic It is secondary to separate friction as resilient support that the magnetic fluid of change can produce controllable power or magnetostatic power（Huang W, Shen C, Wang X. Study on static supporting capacity and tribological performance of ferrofluids. Tribology Transactions 2009;52:717-723）,（Bashtovoi VG, Bossis G, Kabachnikov DN, Krakov MS, Volkova O. Modelling of magnetic fluid support. Journal of Magnetism and Magnetic Materials 2002;252:315-317）.
Traditional scheme：When magnet bottom unsealing, magnetized magnetic fluid structure only provides magnetostatic power.In addition to magnetostatic branch Except support force, magnetic fluid seal can provide other kinds of air supporting（Lampaert SGE, Spronck JW, Ostayen RAJv. Load & Stiffness of a Planar Ferrofluid Pocket Bearing. The 17th Nordic Symposium on Tribology 2016）,（Wang Z, Hu Z, Huang W, Wang X. Elastic support of magnetic fluids bearing. Journal of Physics D: Applied Physics 2017;50:435004）.Magnetic fluid is attracted on the surface of toroidal magnet, forms closed liquid structure.
Summary of the invention
The present invention in order to solve problems in the prior art, provides a kind of magnetic fluid bearing support construction, due to magnetic flow Air in the chamber of body sealing element encapsulation can produce magnetostatic support and air supporting, and the present invention can be produced at double by magnet ring array Raw support force, by changing magnet ring array distribution, to further increase support force.
The present invention includes several magnet rings for forming array, and a pair of cornerwise magnet ring upper surface of magnet ring array is the pole N, separately A pair of of magnet ring upper surface is the pole S；The ring axial magnetic magnetizes, and magnetic fluid is injected in magnet ring upper surface, and lower surface is close by matrix Envelope.
It is further improved, there is between adjacent magnet ring spacing in the magnet ring array.
It is further improved, it is tangent two-by-two between adjacent magnet ring in the magnet ring array.
It is further improved, the magnet ring is ndfeb magnet.
It is further improved, there is the through-hole structure matched with magnet ring, the through-hole on magnet ring and matrix on the matrix To be interference fitted, and magnet ring thickness is identical as matrix height.
It is further improved, the matrix is glass plate or aluminium sheet.
The beneficial effects of the invention are that：
1, since the air in the chamber of magnetic fluid seal encapsulation can produce magnetostatic support and air supporting, the present invention passes through Magnet ring array can generate support force at double, and bearing capacity significantly improves, and bearing capacity is single magnet ring（Sealed bottom）Four times Left and right.
2, by change magnet ring array distribution, make it is tangent two-by-two between adjacent magnet ring, equivalent to increase an air Chamber, the bearing capacity of magnet ring array are single magnet rings（Sealed bottom）Five times or so.
Detailed description of the invention
Fig. 1 is the bearing capacity test macro schematic diagram of single magnet ring.
Fig. 2 is the magnet ring array schematic diagram with certain spacing regular array.
Fig. 3 is adjacent magnet ring tangent magnet ring array schematic diagram two-by-two.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Embodiment 1：
Single magnet ring injects 0.5 milliliter of keryl having a size of 6 millimeters of 12 mm of thickness of 16 millimeters of internal diameters of outer diameter, in magnet ring upper surface Magnetic fluid.When magnet ring bottom unsealing, its bearing capacity, numerical value 0.45N are measured.
Embodiment 2：
Fig. 1 is the bearing capacity test macro schematic diagram of single magnet ring, magnetic Nd-Fe-B ring 3 is placed on glass plate 4, single magnet ring Having a size of 6 millimeters of 12 mm of thickness of 16 millimeters of internal diameters of outer diameter, 0.5 milliliter of kerosene based magnetofluid 2, benefit are injected in magnet ring upper surface Its bearing capacity, numerical value 0.95N are measured with Tension-pressure tester 1.
Embodiment 3：
Fig. 2 is the magnet ring array schematic diagram with certain spacing regular array.It is embedded in four magnet rings on aluminium sheet 5, is axial direction It magnetizes, single magnet ring is having a size of 6 millimeters of 12 mm of thickness of 16 millimeters of internal diameters of outer diameter, formation array, on each pair of cornerwise magnet ring Surface is the pole N, and another pair magnet ring upper surface is the pole S, the magnet ring array equidistantly arranged, apart 25 millimeters of magnet ring center, magnet ring It is interference fit with the through-hole on aluminium sheet, and magnet ring thickness is identical as aluminium plate thickness, each magnet ring upper surface injects 0.5 milliliter Kerosene based magnetofluid.Its bearing capacity is measured using Tension-pressure tester, numerical value 3.7N, as shown in Figure 2.
Embodiment 4
Fig. 3 is adjacent magnet ring tangent magnet ring array schematic diagram two-by-two.It is embedded in four magnet rings on aluminium sheet, is axial charging, Single magnet ring forms array, each pair of cornerwise magnet ring upper surface is having a size of 6 millimeters of 12 mm of thickness of 16 millimeters of internal diameters of outer diameter The pole N, another pair magnet ring upper surface are the pole S, and adjacent magnet ring is tangent two-by-two, i.e., magnet ring center is on 16 millimeters, magnet ring and aluminium sheet Through-hole be interference fit, and magnet ring thickness is identical with aluminium plate thickness, each 0.5 milliliter of the injection of magnet ring upper surface of keryl magnetic Fluid.Its bearing capacity is measured using Tension-pressure tester, numerical value 5.2N, as shown in Figure 3.
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention, it is noted that for For those skilled in the art, without departing from the principle of the present invention, it can also make several improvements, this A little improve also should be regarded as protection scope of the present invention.

Claims (7)

1. a kind of magnetic fluid bearing support construction, it is characterised in that：Several magnet rings including forming array, magnet ring array are a pair of Cornerwise magnet ring upper surface is the pole N, and another pair magnet ring upper surface is the pole S；The ring axial magnetic magnetizes, magnet ring upper surface note Enter magnetic fluid, lower surface is sealed by matrix.
2. magnetic fluid bearing support construction according to claim 1, it is characterised in that：It is adjacent in the magnet ring array There is spacing between magnet ring.
3. magnetic fluid bearing support construction according to claim 1, it is characterised in that：It is adjacent in the magnet ring array It is tangent two-by-two between magnet ring.
4. magnetic fluid bearing support construction according to claim 2 or 3, it is characterised in that：The magnet ring is neodymium iron Boron magnets.
5. magnetic fluid bearing support construction according to claim 2 or 3, it is characterised in that：On the matrix have with The through-hole structure that magnet ring matches.
6. the structure of magnetic fluid bearing support according to claim 5, it is characterised in that：On the magnet ring and matrix Through-hole is interference fit, and magnet ring thickness is identical as matrix height.
7. magnetic fluid bearing support construction according to claim 2 or 3, it is characterised in that：The matrix is glass plate Or aluminium sheet.
CN201810921721.4A 2018-08-14 2018-08-14 Magnetic fluid bearing support construction Pending CN108869544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810921721.4A CN108869544A (en) 2018-08-14 2018-08-14 Magnetic fluid bearing support construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810921721.4A CN108869544A (en) 2018-08-14 2018-08-14 Magnetic fluid bearing support construction

Publications (1)

Publication Number Publication Date
CN108869544A true CN108869544A (en) 2018-11-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810921721.4A Pending CN108869544A (en) 2018-08-14 2018-08-14 Magnetic fluid bearing support construction

Country Status (1)

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CN (1) CN108869544A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110345159A (en) * 2019-07-23 2019-10-18 南昌工程学院 A kind of magnetic fluid cylindrical roller thrust bearing and its processing technology
CN111692209A (en) * 2020-05-25 2020-09-22 南京航空航天大学 Magnetic fluid controllable support micro platform based on extreme infiltration interface and manufacturing method

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JPS59159469A (en) * 1983-03-01 1984-09-10 Matsushita Electric Ind Co Ltd Magnetic fluid seal
US5054939A (en) * 1989-06-05 1991-10-08 Skf Nova Ab Magnetic sliding bearing
JPH04138164U (en) * 1991-06-18 1992-12-24 イーグル工業株式会社 Gas seal using magnetic fluid
US20050239220A1 (en) * 2004-04-23 2005-10-27 Dauwalter Charles R Rate gyroscope and accelerometer multisensor, and method of fabricating same
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CN102537367A (en) * 2012-01-12 2012-07-04 北京理工大学 Shaft sealing device with magnetic fluids
CN104879384A (en) * 2015-06-01 2015-09-02 南京航空航天大学 Magnetic fluid lubricating method
CN105952796A (en) * 2016-06-30 2016-09-21 天津荣亨集团股份有限公司 Magnetofluid suspension bearing with uniformly distributed magnetofluid
CN106015585A (en) * 2016-07-29 2016-10-12 广西科技大学 Floating ring-magnetofluid sealing device

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Publication number Priority date Publication date Assignee Title
JPS59159469A (en) * 1983-03-01 1984-09-10 Matsushita Electric Ind Co Ltd Magnetic fluid seal
US5054939A (en) * 1989-06-05 1991-10-08 Skf Nova Ab Magnetic sliding bearing
JPH04138164U (en) * 1991-06-18 1992-12-24 イーグル工業株式会社 Gas seal using magnetic fluid
US20050239220A1 (en) * 2004-04-23 2005-10-27 Dauwalter Charles R Rate gyroscope and accelerometer multisensor, and method of fabricating same
CN101280803A (en) * 2008-05-20 2008-10-08 南京航空航天大学 Magnetic fluid lubricating method based on tiny magnetic body array
CN102537367A (en) * 2012-01-12 2012-07-04 北京理工大学 Shaft sealing device with magnetic fluids
CN104879384A (en) * 2015-06-01 2015-09-02 南京航空航天大学 Magnetic fluid lubricating method
CN105952796A (en) * 2016-06-30 2016-09-21 天津荣亨集团股份有限公司 Magnetofluid suspension bearing with uniformly distributed magnetofluid
CN106015585A (en) * 2016-07-29 2016-10-12 广西科技大学 Floating ring-magnetofluid sealing device

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HUANG W等: "Study on static supporting capacity and tribological performance of ferrofluids", 《TRIBOLOGY TRANSACTIONS》 *
LAMPAERT SGE等: "Load & Stiffness of a Planar Ferrofluid Pocket Bearing", 《THE 17TH NORDIC SYMPOSIUM ON TRIBOLOGY 2016》 *
OLDENBURG CM等: "Numerical simulation of ferrofluid flow for subsurface environmental engineering applications", 《TRANSPORT IN POROUS MEDIA》 *
WANG Z等: "Elastic support of magnetic fluids bearing", 《 JOURNAL OF PHYSICS D: APPLIED PHYSICS》 *
吴文彬等: "磁性薄膜阵列对铁磁性材料的润滑特性研究", 《摩擦学测试与表征》 *
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110345159A (en) * 2019-07-23 2019-10-18 南昌工程学院 A kind of magnetic fluid cylindrical roller thrust bearing and its processing technology
CN111692209A (en) * 2020-05-25 2020-09-22 南京航空航天大学 Magnetic fluid controllable support micro platform based on extreme infiltration interface and manufacturing method
CN111692209B (en) * 2020-05-25 2021-06-15 南京航空航天大学 Magnetic fluid controllable support micro platform based on extreme infiltration interface and manufacturing method

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Application publication date: 20181123