CN101008422A - Lubricating and sealing device of thrust ball bearing - Google Patents
Lubricating and sealing device of thrust ball bearing Download PDFInfo
- Publication number
- CN101008422A CN101008422A CN 200710066607 CN200710066607A CN101008422A CN 101008422 A CN101008422 A CN 101008422A CN 200710066607 CN200710066607 CN 200710066607 CN 200710066607 A CN200710066607 A CN 200710066607A CN 101008422 A CN101008422 A CN 101008422A
- Authority
- CN
- China
- Prior art keywords
- ball bearing
- thrust ball
- magnetic liquid
- lubricated
- seal arrangement
- 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
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
- F16C33/6644—Retaining the liquid in or near the bearing by a magnetic field acting on a magnetic liquid
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/762—Sealings of ball or roller bearings by means of a fluid
- F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
- F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a lubricant-sealing device of pushing ball bearing, while the pushing ball bearing comprises an upper ring, a lower ring, a steel ball group and a holding support. The lubricant-sealing device is between the upper and lower rings, comprising two annular magnets and magnetic liquid, while two annular magnets are arranged at the outer and inner sides of steel ball group. The rotary seal between the magnets and magnetic liquid is non-contact seal, without direct contact between movable and stable elements. The seal is formed by annular permanent magnet, lower ring of bearing and magnetic liquid, while the magnetic liquid is filled between the annular permanent magnet and the lower ring.
Description
Technical field
The invention belongs to technical field of rolling bearings, refer in particular to a kind of lubricated and seal arrangement of thrust ball bearing.
Background technique
Existing rolling bearing generally is to be made of Shang Quan, Xia Quan, steel ball, retainer, seal arrangement, is that the Chinese patent of CN97235843.9 discloses a kind of roller bearing as the patent No., and its seal arrangement is a seal ring.
Because many products need to produce in the particular surroundings of clean and vacuum and finish, a large amount of few bearings of discharging particulate that use in these manufacturing mechanisms.Scattering and disappearing of lubricating grease, the discharging of fret wear particulate becomes the key technical indexes of these thrust ball bearings.In clean and vacuum environment, adopt thrust ball bearings such as expensive oil-free lubrication, packingless ceramic silicon nitride at present.
Summary of the invention
Technical problem to be solved by this invention is that the abrasive dust particulate that provides a kind of function admirable, low price at the present situation of prior art, can stop running gear to produce leaks, and stops the lubricated and seal arrangement of the lost thrust ball bearing of oiling agent.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: the lubricated and seal arrangement of this a kind of thrust ball bearing, described thrust ball bearing comprises Shang Quan, Xia Quan, steel ball group and retainer, described lubricated and seal arrangement is arranged on Shang Quan and down between the circle, it comprises two ringshaped magnets and magnetic liquid, wherein two ringshaped magnets are separately positioned on the outside and the inboard of steel ball group, fixedly connected on the bottom or the following top of enclosing of last circle, magnetic liquid is distributed in the gap of steel ball sidepiece and ringshaped magnet and last circle or following circle.
Described magnetic liquid is the stable colloidal solution that the ferromagnetic particle with 5～10nm is prepared into to basal liquid by surfactant-dispersed.
Described ferromagnetic particle is Fe
3O
4, FeN or Ni.
Described basal liquid is water, oil or fat.
Described magnetic liquid is chosen as that evaporation is extremely low, viscosity is fit to and the good magnetic liquid of greasy property.
Described magnetic liquid is chosen as decanedioic acid Diisooctyl based magnetic liquid or synthetic oil-base magnetic poly-alpha olefin liquid.
Described magnetic liquid accounts for the 7-10% of thrust ball bearing inner space.
Compared with prior art, the invention has the advantages that the rotary seal of magnet of the present invention and magnetic liquid combination is a kind of noncontact seal, promptly moving part does not directly contact with quiet.Sealing is made up of circle and magnetic liquid under annular permanent magnet, the bearing.Inject magnetic liquid in the gap under annular permanent magnet and bearing between the circle.Enclose the magnetic circuit that constitutes down by annular permanent magnet and bearing magnetic liquid is inhaled firmly in the gap, form a magnetic liquid " O " type ring, the abrasive dust particulate that stops running gear to produce leaks, and stops magnetic liquid lost.
Description of drawings
Fig. 1 is the part thrust ball bearing sectional view of the embodiment of the invention;
Fig. 2 is the thrust ball bearing sectional view of the embodiment of the invention;
Fig. 3 is the thrust ball bearing ringshaped magnet position view of the embodiment of the invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, lubricated and the seal arrangement of this this a kind of thrust ball bearing, described thrust ball bearing comprises circle 3, encloses 6 down, steel ball group 1 and retainer 8, described lubricated and seal arrangement is arranged on circle 3 and encloses between 6 down, it comprises two ringshaped magnets and magnetic liquid 5, two ringshaped magnets are respectively outer ring-like magnet 7 and interior ringshaped magnet 4, and as shown in Figure 3, wherein outer ring-like magnet 7 and interior ringshaped magnet 4 are separately positioned on the outside and the inboard of steel ball group 1.In the present embodiment, outer ring-like magnet 7 and interior ringshaped magnet 4 are fixedly connected bottoms at last circle 3, and magnetic liquid 5 is distributed in steel ball sidepiece and outer ring-like magnet 7 and interior ringshaped magnet 4 and the gap of enclosing down, as illustrated in fig. 1 and 2.In the present embodiment, outer ring-like magnet 7 and interior ringshaped magnet 4 are to adopt with silicone adhesive to do the bottom that the fixedly connected mode of this bonding of static seal is attached at circle 3, can also adopt other general means of fixation to connect.Outer ring-like magnet 7 and interior ringshaped magnet 4 also can be on the following circle 6 that links.Described magnetic liquid 5 is the stable colloidal solution that the ferromagnetic particle with 5～10nm is prepared into to basal liquid by surfactant-dispersed.Described ferromagnetic particle can be Fe3O4, FeN or Ni etc.Described basal liquid is water, oil or fat etc.Described magnetic liquid is chosen as that evaporation is extremely low, viscosity is fit to and the good magnetic liquid of greasy property, as decanedioic acid Diisooctyl based magnetic liquid or synthetic oil-base magnetic poly-alpha olefin liquid.The 7-10% that described magnetic liquid 5 accounts for the thrust ball bearing inner space is optimal selection.
The present invention relates to a kind of magnetic liquid lubrication of thrust ball bearing and the technology of sealing.Though magnetic liquid can not other liquid of rotary seal, can rotary seal magnetic liquid itself; Thrust ball bearing is the part of a special selflubricating and sealing; Select to evaporate the lubricating grease of the magnetic liquid extremely low, that viscosity is fit to and greasy property is good as thrust ball bearing; Utilize the excellent properties of the zero leakage of magnetic liquid rotary seal and extremely low wear particle discharging, the rotary seal of making up with magnet and magnetic liquid seals as thrust ball bearing, produces the thrust ball bearing of magnetic liquid lubrication and sealing.Thereby the particulate emission that this thrust ball bearing is produced in operation process is few, satisfies the requirement of clean and vacuum environment.The thrust ball bearing of magnetic liquid lubrication and sealing is cheap, function admirable.
The present invention relates to the magnetic liquid lubrication of thrust ball bearing and the technology of sealing: the lubricating grease that particularly replaces thrust ball bearing with magnetic liquid; Rotary seal with magnet and magnetic liquid combination realizes the thrust ball bearing sealing.Reach and reduce scattering and disappearing and the discharging of wear particle of oiling agent effectively, make the thrust ball bearing of this magnetic liquid lubrication and sealing be applicable to the particular surroundings of clean and vacuum.
The rotary seal of magnet of the present invention and magnetic liquid combination is a kind of noncontact seal, and promptly moving part does not directly contact with quiet.Sealing is made up of circle and magnetic liquid under annular permanent magnet, the bearing.Inject magnetic liquid in the gap under annular permanent magnet and bearing between the circle.Enclose the magnetic circuit that constitutes down by annular permanent magnet and bearing magnetic liquid is inhaled firmly in the gap, form a magnetic liquid " O " type ring, the abrasive dust particulate that stops running gear to produce leaks, and stops magnetic liquid lost.
Of the present invention having particular application as: increase about the race diameter 3mm of a normal rated thrust ball bearing, reduce to be beneficial to 2 thickness are installed the toroidal magnet that is 3mm about its inner ring diameter 3mm, manufacture an off-gauge thrust ball bearing.Shang Quan, following circle and ball are all made by Martensitic Stain Less Steel SUS440C, retainer is made by Martensitic Stain Less Steel SUS303, behind organic solvent cleaning thrust ball bearing and airing, select for use the extremely low decanedioic acid Diisooctyl based magnetic liquid of saturation vapor pressure to inject thrust ball bearing inside (magnetic liquid accounts for the 7-10% of thrust ball bearing inner space); Magnet is made by Nd-Fe-B rare earth permanent magnetic material Nd2Fe14B surface plating Ni, and circle is made static seal with silicone adhesive on magnet and the rolling thrust ball bearing; Magnet and rolling thrust ball bearing enclose movingly down, and the gap is 0.05-0.1mm movingly, inject magnetic liquid in the gap and carry out rotary seal, and the magnetic line of force passes the ball closure, and magnetic liquid is adsorbed on the effect that lubricating grease is played on the ball surface.Be characterized in: do not change stock, structure and the processing technology thereof of thrust ball bearing, only implement the thrust ball bearing sealing, with the fluid lubrication replacement grease lubrication of magnetic liquid with the rotary seal of magnetic liquid.
The surface active agent of this programme can adopt oleic acid.
Claims (7)
1, a kind of lubricated and seal arrangement of thrust ball bearing, described thrust ball bearing comprises Shang Quan, Xia Quan, steel ball group and retainer, it is characterized in that, described lubricated and seal arrangement is arranged on Shang Quan and down between the circle, it comprises two ringshaped magnets and magnetic liquid, wherein two ringshaped magnets are separately positioned on the outside and the inboard of steel ball group, fixedly connected in the bottom of last circle or the down top of circle, the gap that magnetic liquid is distributed in steel ball sidepiece and ringshaped magnet and last circle or encloses down.
2, the lubricated and seal arrangement of thrust ball bearing according to claim 1 is characterized in that described magnetic liquid is the stable colloidal solution that the ferromagnetic particle with 5～10nm is prepared into to basal liquid by surfactant-dispersed.
3, the lubricated and seal arrangement of thrust ball bearing according to claim 2 is characterized in that described ferromagnetic particle is Fe3O4, FeN or Ni.
4, the lubricated and seal arrangement of thrust ball bearing according to claim 2 is characterized in that described basal liquid is water, oil or fat.
5, the lubricated and seal arrangement of thrust ball bearing according to claim 1 is characterized in that described magnetic liquid is chosen as that evaporation is extremely low, viscosity is fit to and the good magnetic liquid of greasy property.
6, according to the lubricated and seal arrangement of the described thrust ball bearing of arbitrary claim in the claim 1～5, it is characterized in that described magnetic liquid is chosen as decanedioic acid Diisooctyl based magnetic liquid or synthetic oil-base magnetic poly-alpha olefin liquid.
7, according to the lubricated and seal arrangement of the described thrust ball bearing of arbitrary claim in the claim 1～5, it is characterized in that described magnetic liquid accounts for the 7-10% of thrust ball bearing inner space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710066607 CN101008422A (en) | 2007-01-05 | 2007-01-05 | Lubricating and sealing device of thrust ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710066607 CN101008422A (en) | 2007-01-05 | 2007-01-05 | Lubricating and sealing device of thrust ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101008422A true CN101008422A (en) | 2007-08-01 |
Family
ID=38697004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710066607 Pending CN101008422A (en) | 2007-01-05 | 2007-01-05 | Lubricating and sealing device of thrust ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101008422A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799111A (en) * | 2010-03-26 | 2010-08-11 | 南京航空航天大学 | Magnetic liquid lubrication structure with controllable viscosity and method thereof |
| CN105317848A (en) * | 2014-07-29 | 2016-02-10 | 古洛布莱株式会社 | Magnetic fluid sealed bearing and fishing reel including same |
| CN109555785A (en) * | 2018-10-16 | 2019-04-02 | 汤秉辉 | Ball bearing and lantern ring |
| 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 |
| CN110884296A (en) * | 2018-09-10 | 2020-03-17 | 斯凯孚公司 | Sealing device for hub unit |
| CN112326745A (en) * | 2020-10-29 | 2021-02-05 | 清华大学 | System and method for detecting distribution state of magnetic liquid in seal gap |
| CN112452886A (en) * | 2020-11-12 | 2021-03-09 | 常德市格佳机械有限公司 | Cleaning device for finished guide sleeve processing |
-
2007
- 2007-01-05 CN CN 200710066607 patent/CN101008422A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799111A (en) * | 2010-03-26 | 2010-08-11 | 南京航空航天大学 | Magnetic liquid lubrication structure with controllable viscosity and method thereof |
| CN105317848A (en) * | 2014-07-29 | 2016-02-10 | 古洛布莱株式会社 | Magnetic fluid sealed bearing and fishing reel including same |
| CN105317848B (en) * | 2014-07-29 | 2017-12-12 | 古洛布莱株式会社 | Magnet fluid sealing formula bearing and the fishing line reel for possessing the bearing |
| CN110884296A (en) * | 2018-09-10 | 2020-03-17 | 斯凯孚公司 | Sealing device for hub unit |
| CN109555785A (en) * | 2018-10-16 | 2019-04-02 | 汤秉辉 | Ball bearing and lantern ring |
| CN109555785B (en) * | 2018-10-16 | 2020-07-07 | 汤秉辉 | Ball bearing and collar |
| 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 |
| CN112326745A (en) * | 2020-10-29 | 2021-02-05 | 清华大学 | System and method for detecting distribution state of magnetic liquid in seal gap |
| CN112326745B (en) * | 2020-10-29 | 2021-06-22 | 清华大学 | System and method for detecting distribution state of magnetic liquid in seal gap |
| US11287394B1 (en) | 2020-10-29 | 2022-03-29 | Tsinghua University | Detection system and method for distribution state of magnetic fluid in sealing gap |
| CN112452886A (en) * | 2020-11-12 | 2021-03-09 | 常德市格佳机械有限公司 | Cleaning device for finished guide sleeve processing |
| CN112452886B (en) * | 2020-11-12 | 2023-09-08 | 常德市格佳机械有限公司 | Cleaning device for guide sleeve machining |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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