CN105090244A - Axial stress magnetic bearing - Google Patents
Axial stress magnetic bearing Download PDFInfo
- Publication number
- CN105090244A CN105090244A CN201510571150.2A CN201510571150A CN105090244A CN 105090244 A CN105090244 A CN 105090244A CN 201510571150 A CN201510571150 A CN 201510571150A CN 105090244 A CN105090244 A CN 105090244A
- Authority
- CN
- China
- Prior art keywords
- magnetic ring
- ring
- center
- axle core
- internal magnetic
- 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.)
- Granted
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to an axial stress magnetic bearing. The axial stress magnetic bearing comprises a shaft core. A first inner magnetic ring and a second inner magnetic ring which are coaxial with the shaft core are arranged on the shaft core side by side. The outer side of the shaft core is sleeved with a shaft sleeve in a spaced manner. The shaft sleeve comprises a base. A tip located on the center line of the shaft core is arranged at one end of the shaft core. The tip abuts against the center of the base. A first outer magnetic ring and a second outer magnetic ring corresponding to the first inner magnetic ring and the second inner magnetic ring respectively are arranged on the shaft sleeve side by side. The axial stress magnetic bearing is simple in structure, ingenious in design and low in maintaining cost, is widely applied to a fluid flow speed measuring instrument, and is high in sensitivity and practicability, and inner friction force is extremely low.
Description
Technical field
The present invention relates to a kind of magnetic suspension bearing, be specifically related to a kind of axially loaded magnetic suspension bearing.
Background technique
The relation that frictional force suffered when the precision of bearing and its rotation is proportionate, existing bearing mostly is ball bearing, and frictional force during rotation on bearing is comparatively large, and the precision of this class bearing cannot reach the requirement for tracer liquid, gas flow rate device middle (center) bearing.Frictional force for the device middle (center) bearing of tracer liquid, gas flow rate is less, and when liquid speed is converted to the rotational speed of bearing, deviation is less, and the precision of detection device is higher.The precision of ball bearing is higher, and the gap of its inside is less, and the possibility that bearing is blocked by tiny impurity is larger, more easily affects the rotation of bearing.Another open defect of ball bearing needs a set of lubricating structure, and often need more oil change, manufacture cost and maintenance cost are all higher simultaneously.Ball bearing is Mechanical Contact, self has certain frictional force, and when being subject to horizontal impact force in a fluid, its frictional force can increase further, causes the sensitivity decrease of rotating machinery, and then causes the testing precision of current meter to reduce.
Summary of the invention
For above-mentioned deficiency of the prior art, the present invention aim to provide a kind of structure simple, design ingenious, that internal friction is minimum, maintenance cost is low axially loaded magnetic suspension bearing.
To achieve these goals, technological scheme of the present invention: a kind of axially loaded magnetic suspension bearing, include axle core, described axle core is provided with side by side the first internal magnetic ring, the second internal magnetic ring that are in same center line with this axle core, described axle core outside spacers is arranged with axle sleeve, described axle sleeve includes base, one end of described axle core is provided with that to be positioned on this axle core center line top, describedly toply lean at the center of described base, described axle sleeve is provided with side by side and described first internal magnetic ring, the first outer magnetic ring, the second outer magnetic ring that the second internal magnetic ring is corresponding respectively.
As the preferred technological scheme of one, described axle sleeve leans described top center, one end and is provided with and can the center line of described axle core rotates and the adjusting element of axle core axial position described in adjustable for axle, the described top center leaned at this adjusting element.
As the preferred technological scheme of one, described adjusting element is provided with and the described top dead head matched.
As the preferred technological scheme of one, the outside of described adjusting element is provided with socket.
As the preferred technological scheme of one, the inner side of described first internal magnetic ring, the second internal magnetic ring, the first outer magnetic ring, the second outer magnetic ring is all S level or N level.
As the preferred technological scheme of one, between described first internal magnetic ring, the second internal magnetic ring, be provided with the first soft iron ring, between described first outer magnetic ring, the second outer magnetic ring, be provided with the second soft iron ring.
As the preferred technological scheme of one, described top center is embedded with ball that is free to rotate and that lean at described base center.
Beneficial effect of the present invention: the first internal magnetic ring, the inner side of the second internal magnetic ring is at the same level and there is spacing, form two pole orientation is identical and the magnetic line of force is inside and outside radial magnet ring, when internal magnetic ring overlaps with the magnetic field center of outer magnetic ring, internal magnetic ring should revolve and be parked in outer magnetic ring in theory, but this coincident points just exists in theory, this point is can not find in practical application, therefore by the axial position of adjusting element adjusting axle core, and then the distance between adjustment internal magnetic ring and outer magnetic ring magnetic field center, when being adjusted to suitable distance, internal magnetic ring on axle core revolves in the outer magnetic ring be parked on axle sleeve.Whole Mechanical Contact face of the present invention only has a top point, all the other positions are contactless, do not exist because contacting the frictional force produced between internal magnetic ring with outer magnetic ring, ball is embedded on top, the frictional force leaned between ball on base and axle sleeve is minimum, close to zero, compared to existing ball bearing, its rotation sensitivity significantly improves, and overcome the defect that ball bearing needs lubrication, the turbidity test of internal environment of the present invention require to be starkly lower than ball bearing, without the need to lubricating and cleaning, long-time use also Maintenance free, obvious reduction maintenance cost, there is substantial feature and significant technological progress, creative high, practical, reliable and stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A schematic cross-section in Fig. 1;
Fig. 3 is the structural representation of adjusting element in Fig. 1;
In figure, 1, axle core, the 2, first internal magnetic ring, 3, axle sleeve, the 4, first outer magnetic ring, 5, the second outer magnetic ring, 6, adjusting element, the 7, second internal magnetic ring, the 8, first soft iron ring, the 9, second soft iron ring, 10, ball, 11, top, 31, base, 61, socket, 62, dead head.
Embodiment
The present invention is further described below in conjunction with specific embodiment and accompanying drawing.
A kind of axially loaded magnetic suspension bearing as shown in Figure 1-Figure 3, include axle core 1, axle core 1 is provided with side by side the first internal magnetic ring 2 being in same center line with this axle core 1, second internal magnetic ring 7, axle core 1 outside spacers is arranged with axle sleeve 3, namely there is a determining deviation between axle core 1 and axle sleeve 3, axle sleeve 3 includes base 31, one end of axle core 1 is provided be positioned on this axle core 1 center line top 11, top 11 lean at the center of base 31, axle sleeve 3 is provided with side by side and the first internal magnetic ring 2, the first outer magnetic ring 4 that second internal magnetic ring 7 is corresponding respectively, second outer magnetic ring 5, first internal magnetic ring 2, the inner side of the second internal magnetic ring 7 is at the same level and there is spacing, form two pole orientation is identical and the magnetic line of force is inside and outside radial magnet ring, be provided with the first outer magnetic ring 4, the axle sleeve 3 of the second outer magnetic ring 5 can hover relative to axle core 1 in theory.What axle sleeve 3 was connected with induction current revolves oar, when revolving the impact of oar by current and rotating, and revolves the axle sleeve 3 that oar is connected corresponding rotation occurs.Under off-duty state, the axle sleeve 3 being provided with the first outer magnetic ring 4, second outer magnetic ring 5 hovered over by the effect in magnetic field be provided with the first internal magnetic ring 2, second internal magnetic ring 7 axle core 1 on.
It can the center line of axle core 1 be that axle rotates and the adjusting element 6 of adjustable axle core 1 axial position that the center, one end that axle sleeve 3 leans top 11 is provided with, and top 11 lean at the center of this adjusting element 6.
Adjusting element 6 is provided with and top 11 dead heads matched 62, and preferably, dead head 62 is in concave arc shape, and structure is more stable.The outside of adjusting element 6 is provided with socket 61.Adjusting element 6 is preferably bolt, adjusting element 6 is threaded with axle sleeve 3, adjustment means rotates adjusting element 6 by being plugged on socket 61, and then realize the axial displacement of adjustment axle core 1, first internal magnetic ring 2, second internal magnetic ring 7 is relative to the first outer magnetic ring 4, the offset distance of the second outer magnetic ring 5 is less, frictional force then between top 11 and axle sleeve 3 is less, but stability is poorer, otherwise, first internal magnetic ring 2, second internal magnetic ring 7 is relative to the first outer magnetic ring 4, the offset distance of the second outer magnetic ring 5 is larger, frictional force then between top 11 and axle sleeve 3 is larger, but stability is higher.
The inner side of the first internal magnetic ring 2, second internal magnetic ring 7, first outer magnetic ring 4, second outer magnetic ring 5 is all S level or N level, realizes the first outer magnetic ring 4, second outer magnetic ring 5 and suspends relative to the first internal magnetic ring 2, second internal magnetic ring 7.
Be provided with between first internal magnetic ring 2, second internal magnetic ring 7 and be provided with the second soft iron ring 9, first soft iron ring 8, second soft iron ring 9 between first soft iron ring 8, first outer magnetic ring 4, second outer magnetic ring 5 and effectively slow down demagnetization between interior outer magnetic ring peer.
The center of top 11 is embedded with ball 10 that is free to rotate and that lean at described base 31 center, reduces friction further, and improve the sensitivity that axle sleeve rotates, this ball 10 is preferably stainless shot.
The present invention designs ingenious, magnetic suspension bearing is formed by one group of internal magnetic ring and one group of outer magnetic ring, only there are top 11 force bearing points contacted with axle sleeve 3 between axle core 1 with axle sleeve 3, obviously reduce friction, improve rotary inductive sensitivity, adjusted the axial displacement of axle core 1 by adjusting element 6, realize outer magnetic ring and hover relative to internal magnetic ring.Existing ball bearing needs periodic cleaning inner impurity, not easy care, and less impurity also can block bearing, reduce rotation sensitivity, and working life is short, under water can not long-term work, and need regular oil lubrication, maintenance cost is high.The present invention effectively overcomes the problems referred to above, without the need to clean, be widely used in the rate of flow of fluid surveying instruments such as current meter, internal friction is minimum, and rotation sensitivity significantly improves, and does not safeguard at needs lubricant oil, small impurities also can not affect rotation sensitivity, and then can be implemented in long-term work under water, long service life, stability is high.
Above the technological scheme that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth the principle of the embodiment of the present invention and mode of execution, the explanation of above embodiment is only applicable to the principle helping to understand the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, embodiment and application area all will change, and in sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. an axially loaded magnetic suspension bearing, include axle core (1), it is characterized in that, described axle core (1) is provided with side by side the first internal magnetic ring (2) being in same center line with this axle core (1), second internal magnetic ring (7), described axle core (1) outside spacers is arranged with axle sleeve (3), described axle sleeve (3) includes base (31), one end of described axle core (1) is provided with top (11) that are positioned on this axle core (1) center line, described top (11) lean the center in described base (31), described axle sleeve (3) is provided with side by side and described first internal magnetic ring (2), the first outer magnetic ring (4) that second internal magnetic ring (7) is corresponding respectively, second outer magnetic ring (5).
2. axially loaded magnetic suspension bearing as claimed in claim 1, it is characterized in that, the center, one end that described axle sleeve (3) leans described top (11) is provided with and can the center line of described axle core (1) rotates and the adjusting element (6) of axle core (1) axial position described in adjustable for axle, and described top (11) lean the center in this adjusting element (6).
3. axially loaded magnetic suspension bearing as claimed in claim 2, it is characterized in that, described adjusting element (6) is provided with the dead head (62) matched with described top (11).
4. axially loaded magnetic suspension bearing as claimed in claim 2, it is characterized in that, the outside of described adjusting element (6) is provided with socket (61).
5. axially loaded magnetic suspension bearing as claimed in claim 1, it is characterized in that, the inner side of described first internal magnetic ring (2), the second internal magnetic ring (7), the first outer magnetic ring (4), the second outer magnetic ring (5) is all S level or N level.
6. axially loaded magnetic suspension bearing as claimed in claim 1, it is characterized in that, be provided with the first soft iron ring (8) between described first internal magnetic ring (2), the second internal magnetic ring (7), between described first outer magnetic ring (4), the second outer magnetic ring (5), be provided with the second soft iron ring (9).
7. axially loaded magnetic suspension bearing as claimed in claim 1, it is characterized in that, the center of described top (11) is embedded with ball (10) that is free to rotate and that lean at described base (31) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510571150.2A CN105090244B (en) | 2015-09-10 | 2015-09-10 | Axially loaded magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510571150.2A CN105090244B (en) | 2015-09-10 | 2015-09-10 | Axially loaded magnetic suspension bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105090244A true CN105090244A (en) | 2015-11-25 |
| CN105090244B CN105090244B (en) | 2018-01-16 |
Family
ID=54571338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510571150.2A Active CN105090244B (en) | 2015-09-10 | 2015-09-10 | Axially loaded magnetic suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090244B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749431A (en) * | 2018-08-06 | 2018-11-06 | 无锡市稀土永磁厂 | The smooth rotary-type pen container of subsidiary permanent magnet pedestal |
| CN117621420A (en) * | 2023-12-04 | 2024-03-01 | 上海赋贝机电设备有限公司 | Magnetic suspension core rod conveying device for nylon pipe bending machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08326751A (en) * | 1995-06-05 | 1996-12-10 | Koyo Seiko Co Ltd | Magnetic bearing |
| EP0819861A2 (en) * | 1996-07-18 | 1998-01-21 | Seiko Seiki Kabushiki Kaisha | Magnetic bearing devices |
| DE20304493U1 (en) * | 2003-03-20 | 2003-06-18 | Chen Cheng Kang | Blower cooling fan for electrical equipment has magnetic shaft bearing |
| CN2813979Y (en) * | 2005-08-10 | 2006-09-06 | 陈飞 | Magnetic dielectric bearing |
| CN103441648A (en) * | 2013-08-07 | 2013-12-11 | 中国科学院电工研究所 | High-temperature superconducting magnetic levitation motor |
| CN105612017A (en) * | 2013-09-20 | 2016-05-25 | 马勒国际有限公司 | Tool spindle having an active magnetic bearing |
-
2015
- 2015-09-10 CN CN201510571150.2A patent/CN105090244B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08326751A (en) * | 1995-06-05 | 1996-12-10 | Koyo Seiko Co Ltd | Magnetic bearing |
| EP0819861A2 (en) * | 1996-07-18 | 1998-01-21 | Seiko Seiki Kabushiki Kaisha | Magnetic bearing devices |
| DE20304493U1 (en) * | 2003-03-20 | 2003-06-18 | Chen Cheng Kang | Blower cooling fan for electrical equipment has magnetic shaft bearing |
| CN2813979Y (en) * | 2005-08-10 | 2006-09-06 | 陈飞 | Magnetic dielectric bearing |
| CN103441648A (en) * | 2013-08-07 | 2013-12-11 | 中国科学院电工研究所 | High-temperature superconducting magnetic levitation motor |
| CN105612017A (en) * | 2013-09-20 | 2016-05-25 | 马勒国际有限公司 | Tool spindle having an active magnetic bearing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749431A (en) * | 2018-08-06 | 2018-11-06 | 无锡市稀土永磁厂 | The smooth rotary-type pen container of subsidiary permanent magnet pedestal |
| CN117621420A (en) * | 2023-12-04 | 2024-03-01 | 上海赋贝机电设备有限公司 | Magnetic suspension core rod conveying device for nylon pipe bending machine |
| CN117621420B (en) * | 2023-12-04 | 2024-05-28 | 上海赋贝机电设备有限公司 | Magnetic suspension core rod conveying device for nylon pipe bending machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105090244B (en) | 2018-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106123749B (en) | A kind of simple multifunctional circularity detection device | |
| CN104198100A (en) | Plunger pair friction measurement device with rotating cylinder body | |
| CN105090244A (en) | Axial stress magnetic bearing | |
| CN103743924B (en) | A kind of blade rotational speed measurement mechanism | |
| CN106840672B (en) | Match bearing differential retainer dynamic property tester | |
| CN103759692B (en) | Hollow shaft rod bouncing length test tool | |
| CN103196343A (en) | Tappet comprehensive gauge | |
| CN105158497A (en) | Magnetic suspension rotating speed sensor | |
| CN102865844B (en) | Sphere roundness measuring instrument | |
| CN104654988A (en) | Method for detecting coaxiality of bearing holes in compressor body | |
| CN103727924B (en) | A kind of horizon rule | |
| CN203572627U (en) | Vibration device used for determining faults of antifriction bearing | |
| CN204313810U (en) | Cylindrical gear and male splines diameter run-out rapid measurement device | |
| CN103206461B (en) | Method for eliminating axial thermal expansion generated by high-speed matched angular contact ball bearing | |
| CN208311267U (en) | A kind of permanent magnetism type magnetic suspension axial bearing | |
| CN205719116U (en) | Permanent magnetism magnetic suspension turbine sensor | |
| CN102679939B (en) | Roundness detecting method for eccentric shaft part | |
| CN203116669U (en) | Double-positioning center | |
| CN202994062U (en) | A device for measuring the raceway angle of an inclined-raceway bearing | |
| CN204115796U (en) | Wear-resistant water meter centre | |
| CN203479238U (en) | Perpendicularity testing tool for rocker arm threaded hole | |
| CN207570607U (en) | A kind of anti-gathering structure of full bore flowmeter blade assembly | |
| CN204963725U (en) | Axle type part examine utensil | |
| CN209295877U (en) | A kind of measuring device of nonstandard bearing contact angle | |
| CN203892368U (en) | Novel high-speed deep groove ball bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |