CN103398100B - Magnetic fluid filmatic bearing - Google Patents
Magnetic fluid filmatic bearing Download PDFInfo
- Publication number
- CN103398100B CN103398100B CN201310343351.8A CN201310343351A CN103398100B CN 103398100 B CN103398100 B CN 103398100B CN 201310343351 A CN201310343351 A CN 201310343351A CN 103398100 B CN103398100 B CN 103398100B
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- China
- Prior art keywords
- bearing
- magnetic fluid
- permanent magnet
- bearing sleeve
- filmatic
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- 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.)
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Links
- 239000011553 magnetic fluid Substances 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011554 ferrofluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
A kind of magnetic fluid filmatic bearing, belong to filmatic bearing field, comprise bearing support, bearing sleeve, annular permanent magnet, magnetic pole, end cap and rotating shaft axle journal and bearing sleeve and form magnetic fluid in wedge gap, in the middle of it is characterized in that bottom bearing sleeve outer surface in 120 ° of circular arc intervals, be close to bearing sleeve outer surface and be provided with the superimposed watt shape permanent magnet of block, a watt shape permanent magnet compresses and uses screw fastening by the block being concaved circular cambered surface by upper surface.Advantage is that only in filmatic bearing supporting region, magnetic fluid viscosity just changes, but not supporting region is unaffected, substantially improves the greasy property of magnetic fluid filmatic bearing thus.
Description
Technical field
The invention belongs to filmatic bearing technical field, be specifically related to a kind of magnetic fluid filmatic bearing.
Background technique
Take lubricant oil as advantages such as filmatic bearing bearing capacity is large owing to having, strong shock resistance, applicable velocity range are wide, the long service life of medium formation, be widely used on the high, precision and frontier key equipment of the systems such as iron and steel, mine, metallurgy, electric power, space flight, aviation.But be often at a high speed for filmatic bearing, heavy duty, operate under the complicated operating mode such as clockwise and anticlockwise commutation is frequent, impact shock is large, the dynamic pressure oil film of formation is unstable, easily causes axle and the direct contact wear of lining, affect bearing working life.For above-mentioned condition, there is people to propose magnetic fluid bearing after deliberation, substantially improve the adaptive capacity of bearing, improve ride quality.
If application number is 201010222259.2, the patent application that name is called " automatically regulating intelligent sliding bearing and the controlling method thereof of Lubricants viscosity ", produce externally-applied magnetic field to change magnetic fluid viscosity by being wound around hot-wire coil at bearing sleeve outer surface, the greasy property of sliding bearing can be improved very well; Application number is 02288353.3, the patent application that name is called " Sliding Bearing Lubricated with Ferrofluid ", installs annular permanent magnet produce externally-applied magnetic field at bearing sleeve outer surface; Application number is 200710029274.3, the patent application that name is called " magnetic fluid bearing ", adopts the semi-ring pillar-shaped permanent magnet generation magnetic field that two pieces of opposing side magnetic poles are contrary.But above-mentioned patent deficiency is: the magnetic fluid viscosity on the whole internal surface of bearing sleeve all will change, it is favourable that this change improves greasy property to loading ability of bearing district, then disadvantageous to non-bearing district, because the rising of non-bearing district magnetic fluid viscosity, makes interface friction force increase, thus increase rotating shaft running resistance, make heat increase simultaneously, oil film temperature raises, and energy consumption increases, and this is all the negative effect that in prior art, magnetic fluid filmatic bearing produces.
patent of invention content
The object of the invention is to provide a kind of produces externally-applied magnetic field magnetic fluid filmatic bearing at filmatic bearing supporting region, effectively can overcome the shortcoming of magnetic fluid filmatic bearing in prior art.
The present invention is achieved in that as shown in Figure 1, 2, it comprises the magnetic fluid 6 in bearing support 1, bearing sleeve 7, bearing (ball) cover 2, annular permanent magnet 3, magnetic pole 4, the wedge gap that formed between rotating shaft axle journal 5 and bearing sleeve 7, in the middle of it is characterized in that bottom bearing sleeve 7 outer surface in 120 ° of circular arc intervals, be close to bearing sleeve outer surface and the superimposed watt shape permanent magnet 8 of n block is installed, a watt shape permanent magnet compresses and uses screw fastening by the block 11 being concaved circular cambered surface by upper surface, wherein n be less than 5 positive integer.
Advantage of the present invention and good effect are: because structure of the present invention is provided with a watt shape permanent magnet 8 below supporting region, magnetic fluid can improve greasy property by magnetic fields, non-bearing district is not affected by magnetic fields, therefore the negative effect existed in prior art is overcome, also realize uniform oil film distribution to stablize simultaneously, improve bearing capacity, reduce friction factor, increase the service life.
Accompanying drawing explanation
Fig. 1 is the axial sectional view of the present invention
Fig. 2 is A-A sectional view in Fig. 1
In figure, 1-bearing support; 2-bearing (ball) cover; 3-annular permanent magnet; 4-magnetic pole; 5-rotating shaft axle journal; 6-magnetic fluid; 7-bearing sleeve; 8-watt of shape permanent magnet; 9,9 '-front and back oil inlet hole; 10,10 '-left and right oil outlet; 11-block.
Embodiment
As shown in Figure 1, 2, interference fit joint is adopted to be assemblied in by bearing sleeve 7 in the center hole of bearing support 1, in the middle of bottom bearing sleeve 7 outer surface in 120 ° of circular arcs, be close to bearing sleeve outer surface and installed 5 pieces of superimposed watt shape permanent magnets 8, a watt shape permanent magnet 8 compresses and uses bolton by the block 11 being concaved circular cambered surface by upper surface.Seal arrangement adopts annular permanent magnet 3 and magnetic pole 4 combination seal, and carries out axial restraint by bearing (ball) cover 2.Magnetic fluid 6 enters in the wedge gap that bearing sleeve 7 and rotating shaft axle journal 5 formed from the oil inlet hole 9,9 ' of both sides before and after bearing support 1, when rotating shaft starts to rotate, because watt effect of shape permanent magnet 8 makes the magnetic fluid viscosity in loading ability of bearing district increase, bearing capacity can be improved, reduce friction factor, improve the greasy property of filmatic bearing, improve the working life of bearing, effectively overcome the shortcoming that existing magnetic fluid filmatic bearing exists simultaneously.
Claims (1)
1. a magnetic fluid filmatic bearing, include bearing support (1), bearing sleeve (7), bearing (ball) cover (2), annular permanent magnet (3), magnetic pole (4), magnetic fluid (6) in the wedge gap formed between rotating shaft axle journal (5) and bearing sleeve (7), in the middle of it is characterized in that bottom bearing sleeve (7) outer surface in 120 ° of circular arc intervals, be close to bearing sleeve outer surface and the superimposed watt shape permanent magnet (8) of n block is installed, a watt shape permanent magnet compresses and uses screw fastening by the block (11) being concaved circular cambered surface by upper surface, wherein n be less than 5 positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310343351.8A CN103398100B (en) | 2013-08-08 | 2013-08-08 | Magnetic fluid filmatic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310343351.8A CN103398100B (en) | 2013-08-08 | 2013-08-08 | Magnetic fluid filmatic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103398100A CN103398100A (en) | 2013-11-20 |
| CN103398100B true CN103398100B (en) | 2015-12-02 |
Family
ID=49561790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310343351.8A Active CN103398100B (en) | 2013-08-08 | 2013-08-08 | Magnetic fluid filmatic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103398100B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840657B (en) * | 2016-05-24 | 2019-04-19 | 上海交通大学 | A kind of method intelligence controllable bearing and control rotor oscillation |
| CN107799263A (en) * | 2017-11-14 | 2018-03-13 | 太原科技大学 | A kind of preparation method of filmatic bearing oil-based magnetic fluids |
| CN108331837B (en) * | 2018-01-29 | 2020-05-12 | 燕山大学 | Magnetorheological fluid hydrostatic bearing |
| CN113847435B (en) * | 2021-09-30 | 2022-09-20 | 清华大学 | Magnetic liquid seal and dynamic pressure bearing combined sealing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2607467Y (en) * | 2002-12-12 | 2004-03-24 | 上工股份有限公司 | Magnetic fluid lubricating sliding bearing |
| CN101135342A (en) * | 2007-07-20 | 2008-03-05 | 伍劲刚 | Hydromagnetic bearing |
| CN101893035A (en) * | 2010-07-07 | 2010-11-24 | 南京航空航天大学 | Intelligent sliding bearing capable of adjusting viscosity of lubricating fluid automatically and control method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2599459Y2 (en) * | 1991-03-15 | 1999-09-06 | エヌオーケー株式会社 | Magnetic fluid bearing |
| JPH06207616A (en) * | 1993-01-12 | 1994-07-26 | Sankyo Seiki Mfg Co Ltd | Magnetic fluid bearing device |
-
2013
- 2013-08-08 CN CN201310343351.8A patent/CN103398100B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2607467Y (en) * | 2002-12-12 | 2004-03-24 | 上工股份有限公司 | Magnetic fluid lubricating sliding bearing |
| CN101135342A (en) * | 2007-07-20 | 2008-03-05 | 伍劲刚 | Hydromagnetic bearing |
| CN101893035A (en) * | 2010-07-07 | 2010-11-24 | 南京航空航天大学 | Intelligent sliding bearing capable of adjusting viscosity of lubricating fluid automatically and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103398100A (en) | 2013-11-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240424 Address after: 311800 No. 11, Fengbei Road, Taozhu Street, Zhuji City, Shaoxing, Zhejiang Province Patentee after: Zhejiang zhanggui Bearing Technology Co.,Ltd. Country or region after: China Address before: 030024 Shanxi province Taiyuan city Berlin District Wan wa flow Road No. 66 Patentee before: TAIYUAN University OF SCIENCE AND TECHNOLOGY Country or region before: China |