CN104455007A - Novel bearing structure and main shaft with same - Google Patents
Novel bearing structure and main shaft with same Download PDFInfo
- Publication number
- CN104455007A CN104455007A CN201410837384.2A CN201410837384A CN104455007A CN 104455007 A CN104455007 A CN 104455007A CN 201410837384 A CN201410837384 A CN 201410837384A CN 104455007 A CN104455007 A CN 104455007A
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- outer ring
- axial thrust
- bearing structure
- cavity volume
- radial
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Abstract
The invention discloses a novel bearing structure. The novel bearing structure comprises an inner ring, and a first axial anti-thrust outer ring and a second axial anti-thrust outer ring, wherein the first axial anti-thrust outer ring and the second axial anti-thrust outer ring are sleeved on the inner ring, and are arranged adjacent to each other; liquid radial carrying media for carrying radial loads are arranged between the inner ring and the first axial anti-thrust outer ring and between the inner ring and the second axial anti-thrust outer ring; and liquid axial anti-thrust carrying media for carrying axial loads are arranged between two opposite ends of the first axial anti-thrust outer ring and the second axial anti-thrust outer ring in the axial direction. When the bearing structure operates at high speed or with high loads, pure liquids rub in three medium cavities, so that noise, high temperature and mechanical abrasion due to the friction of hard metal can be avoided, the mechanical resistance is reduced, and service life is prolonged.
Description
Technical field
The present invention relates to a kind of Novel lossless bearing structure, particularly relate to the main shaft with this bearing structure.
Background technique
Traditional bearing structure is generally made up of four kinds of primary elements: inner ring, outer ring and retainer.Traditional bearing medium generally adopts metallics (ball or roller bearing) to be medium, such as, and ball bearing, roller bearing, tapered roller bearing, barrel-shaped roller bearing, needle bearing etc.So when high speed or high load rotate, mechanical friction not only can produce noise, high temperature, direct mechanical also can be caused to wear and tear, reduction of service life.
Summary of the invention
Based on this, be necessary to provide a kind of realization to wear and tear without direct mechanical, the Novel bearing structure of high temperature resistant, noise free, long service life.
There is a need to provide a kind of main shaft with this bearing structure.
Novel bearing structure, it comprises inner ring and axial thrust first outer ring that is sheathed on respectively outside described inner ring and axial thrust second outer ring, and described axial thrust first outer ring is disposed adjacent with axial thrust second outer ring; The radial bearing medium of liquid state for carrying radial load is provided with between described inner ring and described axial thrust first outer ring and between described inner ring and described axial thrust second outer ring; The liquid axial thrust bearing medium for carrying axial load is provided with between the two ends that described axial thrust first outer ring is relative in the axial direction with described axial thrust second outer ring.
Wherein in an embodiment, between described inner ring and described axial thrust first outer ring, described inner ring and described axial thrust second outer ring, between described axial thrust first outer ring and described axial thrust second outer ring all in suspension.
Wherein in an embodiment, described radial bearing medium and described thrust bearing medium are nano-MR fluid.
Wherein in an embodiment, described nano-MR fluid has wrapped up surface active agent by the nano particle of superparamagnetism then to spread in base fluid and form, and described base fluid adopts lubricant oil.
Wherein in an embodiment, opposed facing two surfaces of described inner ring and described axial thrust first outer ring are respectively arranged with ring recess and the first radial outer ring recess in first, and in described first, ring recess and the described first radial outer ring recess define the first cavity volume formed for injecting radial bearing medium jointly.
Wherein in an embodiment, opposed facing two surfaces of described inner ring and described axial thrust second outer ring are respectively arranged with ring recess and the second radial outer ring recess in second, in described second, ring recess and the described second radial outer ring recess define the second cavity volume formed for injecting radial bearing medium jointly, and described second cavity volume and described first cavity volume are positioned at same plane.
Wherein in an embodiment, two ends relative in the axial direction with described axial thrust second outer ring, described axial thrust first outer ring offer axially outer ring recess respectively, two outer ring recess of axis define the 3rd cavity volume formed for injecting axial thrust bearing medium jointly, and described first cavity volume and described second cavity volume lay respectively at the both sides of described 3rd cavity volume.
Wherein in an embodiment, on described bearing structure cross section vertically, described first cavity volume, described second cavity volume and described 3rd host cavity co-localization form delta structure.
Wherein in an embodiment, in the magnetic pole of described first cavity volume and radial bearing medium in described second cavity volume and described 3rd host cavity, the magnetic pole of axial thrust bearing medium is contrary.
Main shaft, it comprises axis body and is sheathed on the bearing structure on described axis body, the bearing structure that wherein said bearing structure is above-mentioned.
In the present invention when bearing structure high speed or high loading running, in three track media cavity volumes, friction is neat liquid, just there is not the noise of hardmetal friction, high temperature and mechanical wear, thus reaches reduction mechanical resistance, the effect increased the service life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of Novel bearing structure of the present invention;
Fig. 2 is the exploded view of Novel bearing structure shown in Fig. 1;
Fig. 3 is the sectional view of Novel bearing structure described in Fig. 1.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Please refer to Fig. 1 and Fig. 2, in the present invention, main shaft (not shown) comprises bearing structure 100 and is arranged in the axis body (not shown) in bearing structure 100.Wherein, bearing structure 100 comprises inner ring 10, outer ring 30, radial bearing medium 50 and axial thrust bearing medium 70.Radial carrying inner ring 10 is arranged in main shaft (not shown), and can do the motion of synchronous rotating Vortex with main shaft under external force.Outer ring 30 comprises and is sheathed on axial thrust first outer ring 31 outside radial carrying inner ring 10 and axial thrust second outer ring 32 respectively.Wherein, axial thrust first outer ring 31 is disposed adjacent with axial thrust second outer ring 32.Radial bearing medium 50 is arranged between inner ring 10 and axial thrust first outer ring 31 and between inner ring 10 and axial thrust second outer ring 32, for carrying radial load; Axial thrust bearing medium 70 is arranged between the two ends relative in the axial direction with axial thrust second outer ring 32, axial thrust first outer ring 31, for carrying axial load.
Radial bearing medium 50 and axial thrust bearing medium 70 are nano-MR fluid material.Wherein, nano-MR fluid has wrapped up surface active agent by the nano particle of superparamagnetism, then spreads in base fluid and form.Magnetic-particle size in nano-MR fluid is only 10 nanometers, therefore, can not damage bearing structure 100; Base fluid can adopt lubricant oil in addition, as long as adopt suitable magnetic field just magnetic lubricating oil can be constrained in bearing structure 100, and leak of liquid can not occur.
Please in the lump referring to Fig. 3, inner ring 10 and opposed facing two surfaces, axial thrust first outer ring 31 are respectively arranged with ring recess 11 and the first radial outer ring recess 310 in first, and in first, ring recess 11 and the first radial outer ring recess 310 define formation first cavity volume 41 jointly; When radial bearing medium 50 injects the first cavity volume 41, in suspension between inner ring 10 and axial thrust first outer ring 31.Inner ring 10 and opposed facing two surfaces, axial thrust second outer ring 32 are respectively arranged with ring recess 12 and the second radial outer ring recess 320 in second, and in second, ring recess 12 and the second radial outer ring recess 320 define formation second cavity volume 42 jointly; When radial bearing medium 50 injects the second cavity volume 42, in suspension between inner ring 10 and axial thrust second outer ring 32.Two ends relative in the axial direction with axial thrust second outer ring 32, axial thrust first outer ring 31 offer respectively axially outer ring recess 330, two axis outward ring recess 330 jointly define formation the 3rd cavity volume 43.When axial thrust bearing medium 70 injects the 3rd cavity volume 43, in suspension between axial thrust first outer ring 31 and axial thrust second outer ring 32.
When axial thrust first outer ring 31 is all subject to the load from radial direction with axial thrust second outer ring 32, then conduct on inner ring 10, to carry radial load by radial bearing medium 50; When axial thrust first outer ring 31 and/or axial thrust second outer ring 32 are subject to the load from axis, the active force of load conducts to axial thrust first outer ring 31 and/or axial thrust second outer ring 32, to carry axial load by axial thrust bearing medium 70 in the first cavity volume 41 and the/the second cavity volume 42.
Please continue referring to Fig. 3, the first cavity volume 41 and the second cavity volume 42 lay respectively at the both sides of the 3rd cavity volume 43, and the first cavity volume 41 and the second cavity volume 42 are positioned at same plane.On bearing structure 100 cross section vertically, the first cavity volume 41, second cavity volume 42 and the 3rd host cavity 43 co-localization form delta structure, so can bear comprehensive load.Wherein, in the magnetic pole of the first cavity volume 41 and radial bearing medium 50 in the second cavity volume 42 and the 3rd cavity volume 43, the magnetic pole of axial thrust bearing medium 70 is contrary, thus mutually forms constraint between three road nano-MR fluids, and can with magnetic field power change adjustment load.Such as, when magnetic field changes and magnetic field is stronger, nano-MR fluid stickiness is higher, so that solidification, now the bearing capacity of nano-MR fluid is maximum, three road nano-MR fluids mutually form constraint and can not move, then bearing structure 100 moves in any case, and nano-MR fluid also can not leak; When magnetic field dies down, nano-MR fluid stickiness reduces, and bearing capacity weakens.Can illustrate, nano-MR fluid, as bearing medium, can adjust with load increase or minimizing.
Understandably, in some other embodiment, the quantity of outer ring 30 can be determined as required, in this no limit, such as, when outer ring 30 quantity is three, three outer rings 30 are sheathed on outside inner ring 10 successively, the 3rd cavity volume 43 for injecting axial thrust bearing medium 70 now just can be set respectively between adjacent two outer rings, to carry axial load.
In the present invention, when bearing structure 100 high speed or high loading running, in three track media cavity volumes, friction is neat liquid, just there is not the noise of hardmetal friction, high temperature and mechanical wear, thus reaches reduction mechanical resistance, the effect increased the service life; Meanwhile, the first cavity volume 41, second cavity volume 42 and the 3rd cavity volume 43 form Pin form, make bearing structure 100 can bear comprehensive load.In addition, adopt nano-MR fluid as bearing medium, the bearing capacity of nano-MR fluid can increase with load or reduce and carry out controlled adjustment, makes bearing structure 100 stable working and reliable.
The above embodiment only have expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. Novel bearing structure, is characterized in that: comprise inner ring and axial thrust first outer ring that is sheathed on respectively outside described inner ring and axial thrust second outer ring, described axial thrust first outer ring is disposed adjacent with axial thrust second outer ring; The radial bearing medium of liquid state for carrying radial load is provided with between described inner ring and described axial thrust first outer ring and between described inner ring and described axial thrust second outer ring; The liquid axial thrust bearing medium for carrying axial load is provided with between the two ends that described axial thrust first outer ring is relative in the axial direction with described axial thrust second outer ring.
2. Novel bearing structure as claimed in claim 1, is characterized in that: between described inner ring and described axial thrust first outer ring, described inner ring and described axial thrust second outer ring, between described axial thrust first outer ring and described axial thrust second outer ring all in suspension.
3. Novel bearing structure as claimed in claim 1, is characterized in that: described radial bearing medium and described thrust bearing medium are nano-MR fluid.
4. Novel bearing structure as claimed in claim 3, is characterized in that: described nano-MR fluid has wrapped up surface active agent by the nano particle of superparamagnetism then to spread in base fluid and form, and described base fluid adopts lubricant oil.
5. Novel bearing structure as claimed in claim 1, it is characterized in that: opposed facing two surfaces of described inner ring and described axial thrust first outer ring are respectively arranged with ring recess and the first radial outer ring recess in first, and in described first, ring recess and the described first radial outer ring recess define the first cavity volume formed for injecting radial bearing medium jointly.
6. Novel bearing structure as claimed in claim 5, it is characterized in that: opposed facing two surfaces of described inner ring and described axial thrust second outer ring are respectively arranged with ring recess and the second radial outer ring recess in second, in described second, ring recess and the described second radial outer ring recess define the second cavity volume formed for injecting radial bearing medium jointly, and described second cavity volume and described first cavity volume are positioned at same plane.
7. Novel bearing structure as claimed in claim 6, it is characterized in that: two ends relative in the axial direction with described axial thrust second outer ring, described axial thrust first outer ring offer axially outer ring recess respectively, two outer ring recess of axis define the 3rd cavity volume formed for injecting axial thrust bearing medium jointly, and described first cavity volume and described second cavity volume lay respectively at the both sides of described 3rd cavity volume.
8. Novel bearing structure as claimed in claim 7, is characterized in that: on described bearing structure cross section vertically, described first cavity volume, described second cavity volume and described 3rd host cavity co-localization form delta structure.
9. Novel bearing structure as claimed in claim 8, is characterized in that: in the magnetic pole of described first cavity volume and radial bearing medium in described second cavity volume and described 3rd host cavity, the magnetic pole of axial thrust bearing medium is contrary.
10. main shaft, is characterized in that: comprise axis body and be sheathed on the bearing structure on described axis body, and wherein said bearing structure is the bearing structure described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837384.2A CN104455007B (en) | 2014-12-26 | 2014-12-26 | Bearing structure and main shaft with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410837384.2A CN104455007B (en) | 2014-12-26 | 2014-12-26 | Bearing structure and main shaft with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455007A true CN104455007A (en) | 2015-03-25 |
| CN104455007B CN104455007B (en) | 2017-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410837384.2A Expired - Fee Related CN104455007B (en) | 2014-12-26 | 2014-12-26 | Bearing structure and main shaft with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104455007B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2980473A (en) * | 1958-10-17 | 1961-04-18 | Marlyn D Tanis | Surface tension bearing |
| JPH09217735A (en) * | 1996-02-07 | 1997-08-19 | Sankyo Seiki Mfg Co Ltd | Dynamic pressure bearing device |
| CN101400904A (en) * | 2006-01-10 | 2009-04-01 | Ntn株式会社 | Fluid dynamic pressure bearing device and method of producing the same |
| CN102384156A (en) * | 2010-08-25 | 2012-03-21 | 三星电机株式会社 | Fluid dynamic bearing assembly and motor having the same |
| CN102695888A (en) * | 2009-12-24 | 2012-09-26 | Ntn株式会社 | Fluid dynamic bearing unit |
-
2014
- 2014-12-26 CN CN201410837384.2A patent/CN104455007B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2980473A (en) * | 1958-10-17 | 1961-04-18 | Marlyn D Tanis | Surface tension bearing |
| JPH09217735A (en) * | 1996-02-07 | 1997-08-19 | Sankyo Seiki Mfg Co Ltd | Dynamic pressure bearing device |
| CN101400904A (en) * | 2006-01-10 | 2009-04-01 | Ntn株式会社 | Fluid dynamic pressure bearing device and method of producing the same |
| CN102695888A (en) * | 2009-12-24 | 2012-09-26 | Ntn株式会社 | Fluid dynamic bearing unit |
| CN102384156A (en) * | 2010-08-25 | 2012-03-21 | 三星电机株式会社 | Fluid dynamic bearing assembly and motor having the same |
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| Publication number | Publication date |
|---|---|
| CN104455007B (en) | 2017-04-26 |
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| CF01 | Termination of patent right due to non-payment of annual fee |