CN203702863U - Permanent magnet suspension bearing with radial repulsive force - Google Patents
Permanent magnet suspension bearing with radial repulsive force Download PDFInfo
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- CN203702863U CN203702863U CN201420000702.5U CN201420000702U CN203702863U CN 203702863 U CN203702863 U CN 203702863U CN 201420000702 U CN201420000702 U CN 201420000702U CN 203702863 U CN203702863 U CN 203702863U
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- permanent
- magnetic
- suspension bearing
- permanent magnet
- bearing
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Abstract
The utility model relates to a permanent magnet suspension bearing with a radial repulsive force. The permanent magnet suspension bearing comprises an inner ring, an outer end cover, an outer spacing ring, a ceramic retaining ball assembly, a static permanent magnet ring, a dynamic permanent magnet ring and the like. A radial outer load is mainly borne by means of a radial magnetic suspension force, and an axial outer load is assisted to be borne by means of the ceramic retaining ball assembly; and a radial permanent magnet suspension bearing with a small friction torque is adopted when the radial outer load is borne mainly, and a thrust ball bearing with a friction torque equal to that of a ceramic thrust ball bearing is adopted when the axial outer load is assisted to be borne. The permanent magnet suspension bearing with the radial repulsive force, which is convenient in industrial application, is simple and reliable in structure, capable of reducing inconveniences brought by free assembly of spare parts of permanent magnet bearings at present, easy to realize standardized and serialized production and capable of meeting the requirement for commercialization and has the advantages of convenience in use, no friction, no need of lubrication, high rotating speed, long service life and the like.
Description
Technical field
The utility model relates to a kind of permanent-magnet suspension bearing, and particularly a kind of radially repulsion permanent-magnet suspension bearing that can generally be applicable to large-scale industrial application, is mainly used to bear radially external load.
Background technique
Magnetic suspension bearing is called for short magnetic bearing, be utilize magnetic force between stator and rotor by rotor suspension in space, make between rotor and stator, to only have a kind of novel high-performance bearing that keeps micro-rubbing contact.Owing to upwards not depositing contact friction mechanically in main loading side between rotor, stator, so the rotor of magnetic suspension bearing can reach very high running rotating speed, and have that mechanical wear is little, energy consumption is low, the life-span is long, without the advantage such as lubricated, pollution-free, be particularly suitable at a high speed, vacuum and the super special application such as clean.
Magnetic suspension bearing generally can be divided three classes according to working principle or magnetic force producing method: Active Magnetic Suspending Bearing (Active Magnetic Bearing, be called for short AMB), passive magnetic suspension bearing (Passive Magnetic Bearing, be called for short PMB), hybrid magnetic suspension bearing (Hybrid Magnetic Bearing is called for short HMB).Passive magnetic suspension bearing can be divided into again: permanent-magnet suspension bearing, super-conductive magnetic suspension bearing, diamagnet magnetic suspension bearing, electric power magnetic suspension bearing.Wherein, permanent-magnet suspension bearing (abbreviation Permanent-magnet bearing) is to utilize the active force between permanent magnet to realize the stable suspersion of levitated object in the main carrying degrees of freedom of part.
Even to this day, permanent magnet suspension is still faced with insoluble technical barrier.1842, English physicist Earnshaw pointed out: interaction force is obeyed with the be inversely proportional to system of rule of square distance can not realize three-dimensional stable equilibrium.This conclusion was done citation and demonstration by the great physicist Maxwell of 19th-century, Brown has carried out inference subsequently, goes through and threeth century develops into Earnshaw theorem: permanent-magnet suspension bearing can not be realized fully permanent magnet suspension in all degrees of freedom in space.Therefore want to obtain stable balance suspension system, at least will in one degree of freedom, introduce initiatively external force (as electromagnetic force, mechanical force) aiding support and compensate.
At present, permanent-magnet suspension bearing is still in the experimental research stage, and while contact due to magnet opposed polarity, suction is very large, and does not have specialized factory to manufacture production, therefore in the time assembling voluntarily and install, will suffer from a lot of difficulties and inconvenience, can not be in the industrial large-scale application that obtains.If can develop a kind of can be as rolling bearing can standardization, the Permanent-magnet bearing of producing in serial form, it is bound to resemble rolling bearing and in industrial application, obtains large-scale application so, also can promote further developing of permanent-magnet suspension bearing cause simultaneously.
Model utility content
The purpose of this utility model is to provide the radially main carrying repulsion of one type permanent-magnet suspension bearing, it uses permanent magnet to have " two like magnetic poles repel each other, there is a natural attraction between the sexes " principle make rotating shaft stable suspersion in the time of radially main carrying, relying in the axial direction auxiliary protection bearing positions, utilize ceramic ball assembly as keeping bearing (being equivalent to the retainer in rolling bearing) to make rotating shaft keep axially locating, make just to hit exactly and be nested between inside and outside two magnet rings, there is no axial dipole field, upwards there is certain air gap in footpath between the two, without any friction, rely on the repulsion between magnet ring to reach radially main carrying equilibrium of forces completely, thereby keep stable suspersion in radially main carrying, greatly reduce friction, the rotating speed of lifting rotating shaft and durable in use, can effectively reduce the loss of energy, reach energy-conservation object.
In order to achieve the above object, the utility model adopts following technological scheme:
One is repulsion permanent-magnet suspension bearing radially, comprises an inner ring, two outer end caps, outer ring spacer, four quiet permanent-magnetic clamps, four moving permanent-magnetic clamps, for moving permanent-magnetic clamp being carried out to the fastening cover of axially locating, carrying out the ceramic ball assembly (being equivalent to the retainer of rolling bearing) of axially locating and for hexagonal cylindrical hook bolt and compression spring in several of fixing outer ring for countershaft.It is characterized in that four described quiet permanent-magnetic clamps are all axially relative stacking with four moving permanent-magnetic clamps, four moving permanent-magnetic clamps are enclosed within four quiet permanent-magnetic clamps, quiet permanent-magnetic clamp carries out axially locating by outer end cap, moving permanent-magnetic clamp carries out axially locating by fastening cover, two outer end caps are fixedly connected with outer ring spacer respectively with compression spring by hexagonal cylindrical hook bolt in several, form the radially fixing outer ring of entirety of repulsion permanent-magnet suspension bearing.
Above-mentioned radially repulsion permanent-magnet suspension bearing reaches stable suspersion by the repulsion between quiet permanent-magnetic clamp and moving permanent-magnetic clamp in radially main carrying.Magnet ring material therefor is neodymium iron boron, all adopts axial charging, and by magnet ring processing, producer customizes.
Above-mentioned radially repulsion permanent-magnet suspension bearing, the internal diameter of inner ring is equivalent to the inner ring internal diameter of rolling bearing, and the external diameter of outer ring is equivalent to the outer ring external diameter of rolling bearing, and width is equivalent to the width of rolling bearing, simple in structure, is applicable to standardization, producing in serial form.
The utility model compared with prior art, there is following apparent outstanding feature and remarkable advantage: radially repulsion permanent-magnet suspension bearing is simple and reliable for structure, reduce current Permanent-magnet bearing loose mail and assembled voluntarily the inconvenience bringing, have easy to use, frictional force is little, the advantage such as energy-conservation, can carry out standardization, producing in serial form with reference to the size of conventional rolling bearing, meet the requirement of commercial Application.
accompanying drawing explanation
Fig. 1 is an embodiment's of the utility model general structure schematic diagram.
Fig. 2 is an embodiment's of the utility model the outward appearance plan view as the rolling bearing.
Embodiment
Details are as follows by reference to the accompanying drawings for preferred embodiment of the present utility model:
Embodiment one:
Referring to Fig. 1 and Fig. 2, this is repulsion permanent-magnet suspension bearing radially, comprises an inner ring (1), two outer end caps (2), an outer ring spacer (5), four quiet permanent-magnetic clamps (6), four moving permanent-magnetic clamps (7) and several interior hexagonal cylindrical hook bolt (3) and compression springs (4) for fixed outer ends lid (2) and outer ring spacer (5); It is characterized in that: described four quiet permanent-magnetic clamps (6) are placed in outer ring spacer (5), keep axially locating by two outer end caps (2); It is upper that described four moving permanent-magnetic clamps (7) are enclosed within inner ring (1), and two fastening covers (8) by rotation set on inner ring (1) keep axially locating; Between two fastening covers (8) on inner ring (1) and two outer end caps (2), place respectively a ceramic ball assembly (9) and keep the axially locating of inner ring (1), opposed to guarantee the center of quiet permanent-magnetic clamp (6) and moving permanent-magnetic clamp (7); Moving permanent-magnetic clamp (7) and quiet permanent-magnetic clamp (6) be nested configuration the gap of remaining valid; Two outer end caps (2) are fixedly connected with described outer ring spacer (5) respectively with compression spring (4) by some interior hexagonal cylindrical hook bolts (3).
Embodiment two:
The present embodiment and the basic identical specialization of embodiment one are as follows: described four quiet permanent-magnetic clamps (6) and four moving permanent-magnetic clamps (7) all adopt axial magnetized.Two same specification permanent-magnetic clamps adjacent in described four quiet permanent-magnetic clamps (6) and four moving permanent-magnetic clamps (7) adopt stacking placement, and magnetic pole is contrary; Quiet permanent-magnetic clamp (6) is identical with moving permanent-magnetic clamp (7) magnetic pole, all becomes repulsion to place.Described inner ring (1), outer end cap (2), interior hexagonal cylindrical hook bolt (3), outer ring spacer (5) and fastening cover (8) are made by non-magnetic material.
Embodiment three:
The present embodiment is: referring to Fig. 1, originally radially repulsion permanent-magnet suspension bearing comprises an inner ring (1), two outer end caps (2), hexagonal cylindrical hook bolt (3) and compression spring (4), an outer ring spacer (5), four quiet permanent-magnetic clamps (6), four moving permanent-magnetic clamps (7), two fastening covers (8) and two ceramic ball assemblies (9) in several; It is upper that described four moving permanent-magnetic clamps (7) are enclosed within inner ring (1), axially above positioned by fastening cover (8); Described four quiet permanent-magnetic clamps (6) are placed in outer ring spacer (5), carry out axially locating by outer end cap (2), it is upper that two outer end caps (2) are cemented in outer ring spacer (5) by hexagonal cylindrical hook bolt (3) in several and compression spring (4), forms the radially fixing outer ring of entirety of repulsion permanent-magnet suspension bearing; In moving permanent-magnetic clamp (7) and quiet permanent-magnetic clamp (6), adjacent two magnet rings all adopt stackingly in opposite directions, are built in quiet permanent-magnetic clamp (6) and move permanent-magnetic clamp (7), and magnet ring pole orientation is identical, is repulsion type and is nested.
The working principle of above-mentioned radial permanent magnet suspension bearing is: in the axial direction, ceramic ball assembly (9) is mainly used in inner ring rotating shaft to carry out axial auxiliary positioning (retainer being equivalent in rolling bearing evenly separates rolling element), higher its suffered axial magnetic of positioning precision is less, and radially the friction torque of repulsion permanent-magnet suspension bearing is less.Meanwhile, ceramic ball assembly (9) also can be used to the auxiliary axial external load of bearing, and axially external load is larger, and radially the friction torque of repulsion permanent-magnet suspension bearing is larger, diametrically, moving permanent-magnetic clamp (7) is enclosed within the middle of quiet permanent-magnetic clamp (6), and the two magnet ring polar orientation that are nested are identical, according to magnet " two like magnetic poles repel each other, there is a natural attraction between the sexes " character and the surrounding of magnet and the surrounding of magnet can be repelled each other or mutually inhale principle known, in the time that moving permanent-magnetic clamp (7) does not bear radially external load, quiet permanent-magnetic clamp (6) makes it reach balance to the repulsion of moving permanent-magnetic clamp (7), when moving permanent-magnetic clamp (7) under external load function radially in the time radially producing displacement, quiet permanent-magnetic clamp (6) will produce a very large repulsion and force its state that restores balance moving permanent-magnetic clamp (7), quiet permanent-magnetic clamp (6) is mainly used to bear radially external load to the active force of moving permanent-magnetic clamp (7), and the ceramic ball assembly (9) playing the role of positioning also can be assisted and born axial external load, therefore the utility model mainly utilizes axial magnetic power to bear radially external load, can utilize again ceramic ball assembly to assist and bear axial external load, while mainly bearing radially external load, be a radial permanent magnet suspension bearing that friction torque is very little, auxiliary is a thrust ball bearing that friction torque is suitable with ceramic thrust ball bearing while being used for bearing axial external load.
Referring to Fig. 2, radially repulsion permanent-magnet suspension bearing simple and reliable for structure, reduced current permanent-magnet suspension bearing loose mail and assembled voluntarily the inconvenience bringing, have easy to use, friction torque is little, energy-conservation and be adapted to the advantages such as large-scale application.In actual applications, when the engineers and technicians of subscriber's main station producer select radially repulsion permanent-magnet suspension bearing to bear radially external load, only need know inner ring internal diameter
d, outer ring external diameter
dand bearing width
b(
b) etc. bearing specification size, used with regard to being designed into easily in main frame as selecting radial antifriction bearing, meet the commercial Application requirement of bearing radial load, and be easy to carry out standardization, producing in serial form for bearing manufacturing firm.
Claims (4)
1. a repulsion permanent-magnet suspension bearing radially, comprises an inner ring (1), two outer end caps (2), an outer ring spacer (5), four quiet permanent-magnetic clamps (6), four moving permanent-magnetic clamps (7) and for hexagonal cylindrical hook bolt (3) and compression springs (4) in several of fixed outer ends lid (2) and outer ring spacer (5); It is characterized in that: described four quiet permanent-magnetic clamps (6) are placed in outer ring spacer (5), keep axially locating by two outer end caps (2); It is upper that described four moving permanent-magnetic clamps (7) are enclosed within inner ring (1), and two fastening covers (8) by rotation set on inner ring (1) keep axially locating; Between two fastening covers (8) on inner ring (1) and two outer end caps (2), place respectively a ceramic ball assembly (9) and keep the axially locating of inner ring (1), opposed to guarantee the center of quiet permanent-magnetic clamp (6) and moving permanent-magnetic clamp (7); Moving permanent-magnetic clamp (7) and quiet permanent-magnetic clamp (6) be nested configuration the gap of remaining valid; Two outer end caps (2) are fixedly connected with described outer ring spacer (5) respectively with compression spring (4) by some interior hexagonal cylindrical hook bolts (3).
2. radially repulsion permanent-magnet suspension bearing according to claim 1, is characterized in that: described four quiet permanent-magnetic clamps (6) and four moving permanent-magnetic clamps (7) all adopt axial magnetized.
3. radially repulsion permanent-magnet suspension bearing according to claim 1, is characterized in that: two same specification permanent-magnetic clamps adjacent in described four quiet permanent-magnetic clamps (6) and four moving permanent-magnetic clamps (7) adopt stacking placement, and magnetic pole is contrary; Quiet permanent-magnetic clamp (6) is identical with moving permanent-magnetic clamp (7) magnetic pole, all becomes repulsion to place.
4. radially repulsion permanent-magnet suspension bearing according to claim 1, is characterized in that: described inner ring (1), outer end cap (2), interior hexagonal cylindrical hook bolt (3), outer ring spacer (5) and fastening cover (8) are made by non-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000702.5U CN203702863U (en) | 2014-01-02 | 2014-01-02 | Permanent magnet suspension bearing with radial repulsive force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420000702.5U CN203702863U (en) | 2014-01-02 | 2014-01-02 | Permanent magnet suspension bearing with radial repulsive force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702863U true CN203702863U (en) | 2014-07-09 |
Family
ID=51053313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420000702.5U Expired - Fee Related CN203702863U (en) | 2014-01-02 | 2014-01-02 | Permanent magnet suspension bearing with radial repulsive force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702863U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600341A (en) * | 2016-01-19 | 2016-05-25 | 武汉理工大学 | Permanent magnet carrier roller belt conveyor |
| CN109882500A (en) * | 2018-12-17 | 2019-06-14 | 徐振钢 | It is a kind of to carry sliding bearing |
| CN111927883A (en) * | 2020-07-27 | 2020-11-13 | 燕山大学 | Active double-repulsion type magnetic-liquid double-suspension radial bearing system |
| CN112211939A (en) * | 2020-10-30 | 2021-01-12 | 江苏理工学院 | Damping device |
| CN113236562A (en) * | 2021-07-01 | 2021-08-10 | 武汉凯龙技术开发有限责任公司 | Magnetic suspension screw type refrigeration compressor |
| CN113339260A (en) * | 2021-07-01 | 2021-09-03 | 武汉凯龙技术开发有限责任公司 | Magnetic suspension screw type gas compressor |
| CN113494315A (en) * | 2021-07-21 | 2021-10-12 | 武汉凯龙技术开发有限责任公司 | Magnetic suspension screw type gas expander |
-
2014
- 2014-01-02 CN CN201420000702.5U patent/CN203702863U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600341A (en) * | 2016-01-19 | 2016-05-25 | 武汉理工大学 | Permanent magnet carrier roller belt conveyor |
| CN109882500A (en) * | 2018-12-17 | 2019-06-14 | 徐振钢 | It is a kind of to carry sliding bearing |
| CN111927883A (en) * | 2020-07-27 | 2020-11-13 | 燕山大学 | Active double-repulsion type magnetic-liquid double-suspension radial bearing system |
| CN112211939A (en) * | 2020-10-30 | 2021-01-12 | 江苏理工学院 | Damping device |
| CN113236562A (en) * | 2021-07-01 | 2021-08-10 | 武汉凯龙技术开发有限责任公司 | Magnetic suspension screw type refrigeration compressor |
| CN113339260A (en) * | 2021-07-01 | 2021-09-03 | 武汉凯龙技术开发有限责任公司 | Magnetic suspension screw type gas compressor |
| CN113494315A (en) * | 2021-07-21 | 2021-10-12 | 武汉凯龙技术开发有限责任公司 | Magnetic suspension screw type gas expander |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20160102 |
|
| EXPY | Termination of patent right or utility model |