CN205244137U - Magnetic bearing - Google Patents
Magnetic bearing Download PDFInfo
- Publication number
- CN205244137U CN205244137U CN201521133224.6U CN201521133224U CN205244137U CN 205244137 U CN205244137 U CN 205244137U CN 201521133224 U CN201521133224 U CN 201521133224U CN 205244137 U CN205244137 U CN 205244137U
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- magnetic suspension
- bearing
- rotor
- stator
- suspension bearing
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Abstract
The utility model relates to a machinery magnetic levitation technology field, concretely relates to magnetic bearing. Magnetic bearing include the rotor, form the stator module of magnetic suspension cooperation relation with the rotor, stator module includes the magnetic bearing stator of locating the rotor outside with non - contact cover, the protection bearing is established to the outside cover of magnetic bearing stator, the protection ring is respectively installed to magnetic bearing stator both sides tip, clearance between protection ring and the rotor is less than the clearance between rotor and the magnetic bearing stator. Magnetic bearing will protect the integrative design of bearing and magnetic bearing stator, practiced thrift axial space, the security of system's operation has improved.
Description
Technical field
The utility model relates to mechanical magnetic levitation technology field, is specifically related to a kind of magnetic suspension bearing.
Background technology
Magnetic suspension bearing be one utilize magneticaction by rotor suspension in the air, make not have between rotor and stator the apparatus structure of Mechanical Contact. Compared with traditional ball bearing, sliding bearing, there is not Mechanical Contact in magnetic suspension bearing, rotor can run to very high rotating speed, have that mechanical wear is little, energy consumption is low, noise is little, the life-span is long, without lubricated, without advantages such as oil pollutions, be specially adapted in high speed, vacuum, the particular surroundings such as ultra-clean.
In traditional magnetic levitation bearing system; in order to ensure the safety and reliability of system; generally need to assemble a set of protection bearing (also referred to as auxiliary bearing) in two ends of rotor; be used for bearing radial load; especially in the time that magnetic suspension bearing lost efficacy at the rotor of temporary support High Rotation Speed radially, protection magnetic suspension equipment is not damaged. But; because the rotating speed of magnetic suspension bearing is generally all very high; and there is larger radial clearance between rotor and protection bearing inner race; when System Sudden power-off or while occurring that other is abnormal; rotor can produce very large impact in the time dropping on protection bearing, and makes to protect bearing to reach very high rotating speed in moment. And existing protection bearing is because the ability of opposing rotor strike is lower, usually there is protection bearing and burn out and damage the major accident of Magnetic levitation apparatus.
In addition, in magnetic levitation bearing system, in order to avoid the mode of magnetic suspension shaft system, it is as far as possible short that rotor should design, and therefore axial space is most valuable. But in existing magnetic levitation bearing system, protection bearing is generally arranged in two ends of rotor, thereby inevitably understands axial occupation space, brings very big inconvenience to the system of magnetic suspension bearing.
Utility model content
In order to overcome traditional magnetic levitation bearing system poor stability, reliability is low; and protection bearing axial occupation space defect; technical problem to be solved in the utility model is: provide one will protect bearing and magnetic suspension bearing stator Integral design; save axial space, and the high magnetic suspension bearing of system safety in operation.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of magnetic suspension bearing; comprise rotor, form the stator module of magnetic suspension matching relationship with rotor; described stator module comprises the magnetic suspension bearing stator that is sheathed on rotor exterior with cordless; the outside sheathed protection bearing of described magnetic suspension bearing stator; described magnetic suspension bearing stator both side ends is respectively installed protection ring, and the gap between described protection ring and rotor is less than the gap between rotor and magnetic suspension bearing stator. In magnetic suspension bearing described in the utility model, magnetic suspension bearing stator cylindrical is installed in the endoporus of protection bearing, realizes radial and axial fixing. In system running, rotor suspension is in magnetic suspension bearing stator interior. When system breaks down or when abnormal conditions; because the gap between protection ring and rotor is less than the gap between magnetic suspension bearing stator and rotor; so rotor and protection ring produce contact friction, and drive magnetic suspension bearing stator and protection bearing jointly to rotate, discharge rotor kinetic energy. Wherein, the setting of protection ring, does not directly contact magnetic suspension bearing stator with rotor, has then ensured the security of system operation.
As preferably, described protection bearing is rolling bearing.
As preferably, the outside sheathed bear box of described protection bearing.
As preferably, described magnetic suspension bearing also comprises latch, and described magnetic suspension bearing stator is provided with the draw-in groove cooperatively interacting with latch, and described latch is connected with spring, and described spring is fixedly connected with magnetic suspension bearing housing. Wherein, described latch when the system works, magnetic suspension bearing stator spacing. Particularly, in the time that magnetic suspension bearing is worked, described latch is inhaled in draw-in groove. When magnetic suspension bearing quits work or when drive motors power supply is cut off, latch can be under spring-force driven dual, release magnetic suspension bearing stator spacing.
The utility model compared with the existing technology has the following advantages and effect:
1, magnetic suspension bearing described in the utility model is arranged at rotor in the radial direction by protection bearing, has then effectively saved the axial space of magnetic levitation bearing system, has expanded the design margin of magnetic levitation bearing system.
2, magnetic suspension bearing described in the utility model will be protected bearing and magnetic suspension bearing stator Integral design; and at magnetic suspension bearing stator two ends installation protection ring; make no matter described magnetic suspension bearing stator is normally to move in system; still occur under the system failure or abnormal conditions; all do not contact with rotor, then effectively ensured the security of magnetic suspension bearing operation.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of magnetic suspension bearing described in the utility model.
Label declaration: 1, rotor; 2, magnetic suspension bearing stator; 3, protection bearing; 4, protection ring; 5, spring; 6, latch; 7, bear box.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment 1: as shown in Figure 1; a kind of magnetic suspension bearing; comprise rotor 1, form the stator module of magnetic suspension matching relationship with rotor 1; described stator module comprises the magnetic suspension bearing stator 2 that is sheathed on rotor 1 outside with cordless; the outside sheathed protection bearing 3 of described magnetic suspension bearing stator 2; described magnetic suspension bearing stator 2 both side ends are respectively installed protection ring 4, and the gap between described protection ring 4 and rotor 1 is less than the gap between rotor 1 and magnetic suspension bearing stator 2.
In the present embodiment 1, described magnetic suspension bearing stator 2 is fixed in the endoporus of protection bearing 3, and described protection bearing 3 is rolling bearing, the outside sheathed bear box 7 of described rolling bearing.
Magnetic suspension bearing described in the present embodiment 1, in the time running well, rotor 1 is suspended in magnetic suspension bearing stator 2 inside. When system cut-off or while occurring that other is abnormal; rotor 1 orbit of shaft center becomes large; once contact with protection ring 4; can trigger a guard signal; now system can be cut off magnetic suspension bearing and drive motors power supply; under the effect of rotor 1 and protection ring 4 contact friction forces, protection bearing 3 rotates together with magnetic suspension bearing stator 2 simultaneously, discharges the kinetic energy of rotor 1 simultaneously. Adopt this design, due to the effect of protection ring 4, magnetic suspension bearing stator 2 can not occur directly to contact with rotor 1, thereby has ensured the safety of system. Meanwhile, protection bearing 3 is arranged in the outside of magnetic suspension bearing stator 2, has saved axial space.
Embodiment 2: as shown in Figure 1, a kind of magnetic suspension bearing, be with the difference of embodiment 1, described magnetic suspension bearing also comprises latch 6, described magnetic suspension bearing stator 2 is provided with the draw-in groove cooperatively interacting with latch 6, described latch 6 is connected with spring 5, and described spring 5 is fixedly connected with magnetic suspension bearing housing.
In magnetic suspension bearing described in the present embodiment 2, latch 6 is spacing for magnetic suspension bearing stator 2. Particularly, in the time that magnetic suspension bearing is normally worked, latch 6 is inhaled in the draw-in groove of magnetic suspension bearing stator 2 under the effect of electromagnetic force, and spring 5 is in extended state, and magnetic suspension bearing stator 2 is completely fixed, and rotor 1 normally suspends. When system cut-off or while occurring that other is abnormal; rotor 1 orbit of shaft center becomes large; once contact with protection ring 4; can trigger a guard signal; now system can be cut off magnetic suspension bearing and drive motors power supply; latch 6 can be under the effect of spring force release magnetic suspension bearing stator 2 spacing so that protection bearing 3 rotate together with magnetic suspension bearing stator 2 simultaneously, the kinetic energy of release rotor 1.
In addition, it should be noted that, the specific embodiment described in this description, shape, institute's title of being named etc. of its parts and components can be different. All equivalence or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent. The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (4)
1. a magnetic suspension bearing, comprises rotor (1), forms magnetic suspension matching relationship with rotor (1)Stator module, described stator module comprises the magnetic suspension bearing that is sheathed on rotor (1) outside with cordlessStator (2), is characterized in that, the outside sheathed protection bearing of described magnetic suspension bearing stator (2) (3), instituteState magnetic suspension bearing stator (2) both side ends and protection ring (4) is respectively installed, described protection ring (4) and rotor(1) gap between is less than the gap between rotor (1) and magnetic suspension bearing stator (2).
2. magnetic suspension bearing according to claim 1, is characterized in that, described protection bearing (3)For rolling bearing.
3. magnetic suspension bearing according to claim 2, is characterized in that, described protection bearing (3)Outside sheathed bear box (7).
4. magnetic suspension bearing according to claim 3, is characterized in that, described magnetic suspension bearing alsoComprise latch (6), described magnetic suspension bearing stator (2) is provided with latch (6) and cooperatively interactsDraw-in groove, described latch (6) is connected with spring (5), described spring (5) and magnetic suspension bearing housingBe fixedly connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521133224.6U CN205244137U (en) | 2015-12-29 | 2015-12-29 | Magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521133224.6U CN205244137U (en) | 2015-12-29 | 2015-12-29 | Magnetic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205244137U true CN205244137U (en) | 2016-05-18 |
Family
ID=55943219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521133224.6U Active CN205244137U (en) | 2015-12-29 | 2015-12-29 | Magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205244137U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374838A (en) * | 2018-04-08 | 2018-08-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic suspension bearing |
| CN109356933A (en) * | 2018-11-05 | 2019-02-19 | 南京航空航天大学 | A kind of radial protection ring structure that cooperation magnetic suspension bearing uses |
| CN111894878A (en) * | 2020-08-06 | 2020-11-06 | 刘谊坤 | Long-life ventilation blower |
-
2015
- 2015-12-29 CN CN201521133224.6U patent/CN205244137U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374838A (en) * | 2018-04-08 | 2018-08-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic suspension bearing |
| CN108374838B (en) * | 2018-04-08 | 2023-11-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic suspension bearing |
| CN109356933A (en) * | 2018-11-05 | 2019-02-19 | 南京航空航天大学 | A kind of radial protection ring structure that cooperation magnetic suspension bearing uses |
| CN111894878A (en) * | 2020-08-06 | 2020-11-06 | 刘谊坤 | Long-life ventilation blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Ning Road 300457 Tianjin City Development Zone No. 34 Mu Tong Jinbin development plant No. 18 plant northeast side Patentee after: Tianjin Feixuan science and Technology Co Ltd Address before: Nanjing Road 300450 in Tianjin Binhai New Area No. 34 Mu Patentee before: Tianjin Flying Science Development Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Block D, No.90, 12th Street, Binhai New Area Development Zone, Tianjin Patentee after: Tianjin Feixuan Technology Co.,Ltd. Address before: 300457 northeast side of No.18 plant of Jinbin development communication plant, No.34 Muning Road, Tianjin Development Zone Patentee before: TIANJIN EMAGING TECHNOLOGY Co.,Ltd. |