CN110864043B - Magnetic suspension radial bearing and assembling method thereof - Google Patents
Magnetic suspension radial bearing and assembling method thereof Download PDFInfo
- Publication number
- CN110864043B CN110864043B CN201910950366.8A CN201910950366A CN110864043B CN 110864043 B CN110864043 B CN 110864043B CN 201910950366 A CN201910950366 A CN 201910950366A CN 110864043 B CN110864043 B CN 110864043B
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- radial
- ring
- magnetic
- groove
- casing
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/047—Details of housings; Mounting of active magnetic bearings
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
-
- 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
- F16C43/00—Assembling bearings
Abstract
The invention provides a magnetic suspension radial bearing, which comprises a radial ring and a shell, wherein the radial ring is positioned in the shell and is in interference fit connection with the shell, and an encapsulating piece for enhancing the fit strength of the shell and the radial ring is also arranged between the radial ring and the shell; the reliability of the product in high and low temperature states is effectively improved.
Description
Technical Field
The invention relates to the technical field of bearing devices, in particular to a magnetic suspension radial bearing and an assembling method thereof.
Background
In the prior art, a shell and a radial ring are in interference fit, and the magnitude of interference is 0.043-0.098; the shell and the radial ring are made of aluminum and 45# in analysis, and the thermal expansion coefficients of the shell and the radial ring are different by 12; the basic size is 176mm, when the working environment rises to 40 ℃, the interference magnitude of the two parts is reduced by 0.042, and the hidden danger of loosening exists; in order to ensure the reliability of the product, the locking screw structure is added on the side surface of the shell, so that the radial ring is prevented from loosening and running in the shell.
The structure has two problems, when the radial ring and the shell are sleeved in a hot mode, when the shell is heated to 90 ℃, the outer circle of the shell is easy to deform, and the shell is difficult to mount; simultaneously after radial ring emboliaed the casing, because of radial ring closes with the casing interference, cause the casing external diameter grow, the grow size is uncontrollable, also can cause the unable assembly of casing, needs the second time of outer circle to the casing, and second processing relates to the second clamping, seriously influences casing and radial bearing stator axiality, influences radial bearing control accuracy.
Disclosure of Invention
In view of the above, the present invention aims to provide a magnetic suspension radial bearing which avoids the disadvantages in the prior art, and can solve the problems of large interference between the housing and the radial ring and deformation of the hot jacket of the product, and the quality hidden trouble that the fit of the housing and the radial ring changes from interference into clearance fit at high temperature; the reliability of the product in high and low temperature states is effectively improved.
The embodiment of the invention provides a magnetic suspension radial bearing which comprises a radial ring and a shell, wherein the radial ring is positioned in the shell and is in interference fit connection with the shell, and a potting part for enhancing the fitting strength of the shell and the radial ring is arranged between the radial ring and the shell.
Furthermore, notches for ensuring the stability of the radial ring and the shell in the radial and axial positions are arranged on the inner circle of the shell and the outer circle of the radial ring, and the potting piece is positioned in the notch between the shell and the radial ring.
Furthermore, still offer on the interior circle of casing and be used for playing the first recess that goes on fixing to radial ring, still offer on the excircle of radial ring and be used for playing the second recess that goes on fixing to radial ring.
Furthermore, the first groove and the second groove are respectively positioned at two ends of the notch and communicated with the notch, and the potting piece is also positioned in the first groove and the second groove.
Furthermore, the first groove and the second groove are oppositely arranged.
Furthermore, the first groove is a half-circle groove, and the second groove is a square groove.
Further, still including magnet steel, magnet steel mount, coil, radial bearing iron core, magnetic ring and bearing rotor, the coil is fixed in on the radial bearing iron core, bearing iron core is fixed in on the radial ring, the magnet steel is fixed in on the magnet steel mount, magnetic ring is fixed in the casing, the magnet steel mount is located between radial ring and the magnetic ring and with magnetic ring fixed connection, bearing rotor run through in the casing with radial bearing iron core fixed connection.
Further, the potting member is a plastic potting member.
The embodiment of the invention also provides an assembling method of the magnetic suspension radial bearing, which comprises the following steps:
s1, winding a coil;
s2 inserting lines;
s3 shrink fitting the radial bearing stator to the radial ring;
s4 magnetic steel fixing frame is installed on the magnetic conductive ring;
s5 magnetic steel is arranged;
s6, mounting a radial bearing stator and a magnetic conduction ring assembly;
s7 shrink fitting the radial bearing stator to the housing;
s8, pouring sealant;
s9 mounting the bearing rotor.
Compared with the prior art, the invention has the following beneficial effects: because the radial ring and the shell are connected in an interference fit way and are fixed on the potting piece between the radial ring and the shell in a matching way, when the temperature of the magnetic suspension radial bearing rises due to the working environment, the interference magnitude can be gradually reduced through the small interference fit part between the shell and the radial ring until clearance fit is formed, and the potting piece can expand in the gap between the radial ring and the shell, and because the expansion coefficient of the potting piece is much larger than that of the radial ring and the shell, the radial ring and the shell are tightly matched together in the axial direction and the radial ring due to the expansion of the potting piece, when the temperature of the magnetic suspension radial bearing is reduced due to the working environment, the shell shrinks more than the radial ring, the interference magnitude of the matching part of the radial ring and the shell is gradually increased, the tight fit between the shell and the radial ring at low temperature can be ensured, so that the problems of large interference magnitude between the shell and the radial ring and deformation of a product hot jacket can be solved, and the quality hidden trouble that the fit type of the shell and the radial ring is changed from interference into clearance fit at high temperature is solved; the reliability of the product in high and low temperature states is effectively improved.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a sectional view of a magnetic levitation radial bearing of the present invention.
Fig. 2 is a perspective view of a magnetic levitation radial bearing of the present invention.
Fig. 3 is a perspective view of a housing in a magnetic levitation radial bearing of the present invention.
Fig. 4 is a cross-sectional view of a housing in a magnetic levitation radial bearing of the present invention.
Fig. 5 is a front view of a housing in a magnetic levitation radial bearing of the present invention.
Fig. 6 is a perspective view of a radial ring in a magnetic levitation radial bearing of the present invention.
Fig. 7 is a cross-sectional view of a radial ring in a magnetic levitation radial bearing of the present invention.
Fig. 8 is a perspective view of a radial ring in a magnetic levitation radial bearing of the present invention.
Fig. 9 is a perspective view of a potting in a magnetic levitation radial bearing of the present invention.
Fig. 10 is a schematic process flow diagram of a magnetic suspension radial bearing of the present invention.
The figure includes: the magnetic steel sealing device comprises a shell 1, a first groove 11, a radial ring 2, a notch 21, a second groove 22, an encapsulating piece 3, a magnetic ring 4, magnetic steel 5, a magnetic steel fixing frame 51, a radial bearing stator 6, a coil 7, a front bearing rotor baffle 8, a rear bearing rotor baffle 9 and a bearing rotor 10.
Detailed Description
The invention is further described with reference to the following examples.
As shown in fig. 1-2, an embodiment of the present invention provides a magnetic suspension radial bearing, which includes a radial ring 2 and a housing 1, wherein an encapsulation member 3 for enhancing the matching strength between the housing 1 and the radial ring 2 is further disposed between the radial ring 2 and the housing 1, and further, the encapsulation member 3 is formed by pouring an encapsulation compound, and since the encapsulation member 1 is installed in a matching manner without any tool, the process is easy to implement, and a product can be optimized without adding new cost; the radial ring 2 is positioned in the shell 1 and is connected with the shell 1 in an interference fit manner, because the radial ring 2 is connected with the shell 1 in the interference fit manner, when the potting component 3 is formed by pouring the potting adhesive, the bottom sealing effect can be achieved, the potting adhesive is prevented from flowing out, and the potting component 3 is fixed between the radial ring 2 and the shell 1 in a matched manner, when the temperature of the magnetic suspension radial bearing rises due to the working environment, the interference magnitude can be gradually reduced through the small interference fit position between the shell 1 and the radial ring 2 until clearance fit is formed, the potting component 3 can expand in the clearance between the radial ring 2 and the shell 1, the expansion coefficient of the potting component 3 is much larger than that of the radial ring 2 and the shell 1, the potting component 3 expands to enable the radial ring and the shell to be tightly matched together in the axial direction and the radial ring, when the temperature of the magnetic suspension radial bearing drops due to the working environment, the shell 1 contracts more than the radial ring 2, the interference magnitude of the matched part of the radial ring 2 and the shell 1 is gradually increased, so that the tight fit between the shell 1 and the radial ring 2 can be ensured at low temperature, the problems that the interference magnitude of the shell 1 and the radial ring 2 is increased and the product hot jacket is deformed can be solved, and the quality hidden trouble that the matched mode of the shell 1 and the radial ring 2 is changed from interference into clearance fit at high temperature; the reliability of the product in high and low temperature states is effectively improved.
As shown in fig. 1 to 8, in the preferred embodiment, the inner circle of the casing 1 and the outer circle of the radial ring 2 are provided with notches 21 for ensuring the stability of the radial ring 2 and the casing 1 in radial and axial positions, and the potting member 3 is located in the notches 21 between the casing 1 and the radial ring 2, and can play a role in axial and radial fixing.
As shown in fig. 3 to 8, in a preferred embodiment, the inner circle of the housing 1 further defines a first groove 11 for fixing the radial ring 2, and the outer circle of the radial ring 2 further defines a second groove 22 for fixing the radial ring 2.
As shown in fig. 3-8, in a preferred embodiment, the first groove 11 and the second groove 22 are respectively located at two ends of the slot 21 and are communicated with the slot 21, the potting member 3 is also located in the first groove 11 and the second groove 22, and further, the first groove 11 and the second groove 22 are oppositely arranged, so as to effectively fix the radial ring 2.
As shown in fig. 9, in a preferred embodiment, the potting member 3 is a plastic potting member 3, one end of the potting member 3 is provided with a first protrusion 31 integrally formed with the potting member 3, the other end of the potting member 3 is provided with a second protrusion 32 integrally formed with the potting member 3, the first protrusion 31 is located in the first groove 11, and the second protrusion 32 is located in the second groove 22, so as to fix the radial ring 2.
As shown in fig. 3 to 8, in a preferred embodiment, the first groove 11 is a half-circle groove, and the second groove 22 is a square groove, so that the fixation of the radial ring 2 can be effectively improved by the shape matching of the first groove 11 and the second groove 22.
As shown in fig. 1-2, in a preferred embodiment, the magnetic bearing further includes a magnetic steel 5, a magnetic steel fixing frame 51, a coil 7, a radial bearing stator 6, a magnetic conductive ring 4, and a bearing rotor 10, where the coil 7 is fixed on the radial bearing stator 6, the radial bearing stator 6 is fixed on the radial ring 2, the magnetic steel 5 is fixed on the magnetic steel fixing frame 51, the magnetic conductive ring 4 is fixed in the casing 1, the magnetic steel fixing frame 51 is located between the radial ring 2 and the magnetic conductive ring 4 and is fixedly connected with the magnetic conductive ring 4, the bearing rotor 10 penetrates through the casing 1 and is fixedly connected with the radial bearing stator 6, and a rear bearing rotor baffle 9 and a front bearing rotor baffle 8 for improving the stability of the radial bearing stator 6 are respectively fixed at two ends of the radial bearing stator 6.
As shown in fig. 10, the present embodiment further provides an assembling method of a magnetic suspension radial bearing, including the following steps:
s1 winding coil 7: winding the coil 7 through a winding machine;
s2 rule: embedding the coil 7 wound in step S1 in the radial bearing stator 6;
s3 shrink-fitting of the radial bearing stator 6 to the radial ring 2: shrink-fitting the radial bearing stator 6 subjected to the wire insertion in the step S2 into the radial ring;
the S4 magnetic steel fixing frame 51 is arranged on the magnetic conductive ring 4: the magnetic steel fixing frame 51 is fixed on the magnetic conductive ring 4;
s5 mounting magnetic steel 5: sequentially mounting and fixing a plurality of magnetic steels 5 on the magnetic steel fixing frame 51 in the S4 to obtain a magnetic conduction ring assembly;
s6 mounting the radial bearing stator 6 and the flux ring assembly: fixing the radial bearing stator 6 on the magnetic conductive ring component;
s7 shrink-fitting of the radial bearing stator 6 to the housing 1: shrink-fitting the bearing stator 6 into the housing 1;
s8 injection potting 3: pouring sealant into the notch 21 between the shell 1 and the radial ring 2, and solidifying the pouring sealant into a pouring member 3;
s9 bearing rotor 10: finally, the bearing rotor 10 is fixed in the housing 1.
Compared with the prior art, the invention has the following beneficial effects: because the radial ring and the shell are connected in an interference fit way and are fixed on the potting piece between the radial ring and the shell in a matching way, when the temperature of the magnetic suspension radial bearing rises due to the working environment, the interference magnitude can be gradually reduced through the small interference fit part between the shell and the radial ring until clearance fit is formed, and the potting piece can expand in the gap between the radial ring and the shell, and because the expansion coefficient of the potting piece is much larger than that of the radial ring and the shell, the radial ring and the shell are tightly matched together in the axial direction and the radial ring due to the expansion of the potting piece, when the temperature of the magnetic suspension radial bearing is reduced due to the working environment, the shell shrinks more than the radial ring, the interference magnitude of the matching part of the radial ring and the shell is gradually increased, the tight fit between the shell and the radial ring at low temperature can be ensured, so that the problems of large interference magnitude between the shell and the radial ring and deformation of a product hot jacket can be solved, and the quality hidden trouble that the fit type of the shell and the radial ring is changed from interference into clearance fit at high temperature is solved; the reliability of the product in high and low temperature states is effectively improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A magnetic suspension radial bearing, characterized in that: including radial ring and casing, radial ring is located in the casing and with casing interference fit connects, radial ring with still be provided with the embedment piece that is used for strengthening casing and radial ring cooperation intensity between the casing, the excircle of casing with all be provided with on the excircle of radial ring and be used for guaranteeing radial ring and casing at radial and axial position stability's notch, the embedment piece is located in the notch between casing and the radial ring, still offer on the interior circle of casing and be used for playing the first recess that goes on fixing to radial ring, still offer on the excircle of radial ring and be used for playing the second recess that goes on fixing to radial ring.
2. A magnetic levitation radial bearing as claimed in claim 1, wherein: the first groove and the second groove are respectively positioned at two ends of the notch and communicated with the notch, and the potting piece is also positioned in the first groove and the second groove.
3. A magnetic levitation radial bearing as claimed in claim 1, wherein: the first groove and the second groove are oppositely arranged.
4. A magnetic levitation radial bearing as claimed in claim 1, wherein: the first groove is a half-circle groove, and the second groove is a square groove.
5. A magnetic levitation radial bearing as claimed in claim 1, wherein: the potting member is a plastic potting member.
6. A magnetic levitation radial bearing as claimed in claim 1, wherein: still including magnet steel, magnet steel mount, coil, radial bearing iron core, magnetic ring and bearing rotor, the coil is fixed in on the radial bearing iron core, bearing iron core is fixed in on the radial ring, the magnet steel is fixed in on the magnet steel mount, the magnetic ring is fixed in the casing, the magnet steel mount is located between radial ring and the magnetic ring and with magnetic ring fixed connection, bearing rotor run through in the casing with radial bearing iron core fixed connection.
7. A method of assembling a magnetic levitation radial bearing as claimed in any one of claims 1-6, characterised in that: the method comprises the following steps:
s1, winding a coil;
s2 inserting lines;
s3 shrink fitting the radial bearing stator to the radial ring;
s4 magnetic steel fixing frame is installed on the magnetic conductive ring;
s5 magnetic steel is arranged;
s6, mounting a radial bearing stator and a magnetic conduction ring assembly;
s7 shrink fitting the radial bearing stator to the housing;
s8, pouring sealant;
s9 mounting the bearing rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950366.8A CN110864043B (en) | 2019-10-08 | 2019-10-08 | Magnetic suspension radial bearing and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950366.8A CN110864043B (en) | 2019-10-08 | 2019-10-08 | Magnetic suspension radial bearing and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110864043A CN110864043A (en) | 2020-03-06 |
| CN110864043B true CN110864043B (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910950366.8A Active CN110864043B (en) | 2019-10-08 | 2019-10-08 | Magnetic suspension radial bearing and assembling method thereof |
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| CN (1) | CN110864043B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160986B (en) * | 2020-09-29 | 2021-11-05 | 珠海格力电器股份有限公司 | Magnetic suspension bearing stator, magnetic suspension bearing and compressor |
| CN114992239A (en) * | 2022-05-26 | 2022-09-02 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and compressor |
| CN115045913A (en) * | 2022-05-26 | 2022-09-13 | 珠海格力电器股份有限公司 | Magnetic suspension bearing, compressor and air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3706226A1 (en) * | 1987-02-26 | 1988-09-08 | Union Special Gmbh | Device for aligning a bearing housing for the acceptance of a shaft in a location opening of a machine casing |
| US5949593A (en) * | 1998-03-16 | 1999-09-07 | Eastman Kodak Company | Off-loaded strut joint mirror support system |
| CN101248282A (en) * | 2005-08-24 | 2008-08-20 | 梅科斯特拉克斯勒股份公司 | Rotor shaft for magnetic bearing device |
| CN102906435A (en) * | 2010-03-03 | 2013-01-30 | D&M科技株式会社 | Active magnetic bearing |
| CN108679085A (en) * | 2018-06-14 | 2018-10-19 | 珠海格力电器股份有限公司 | Radial stator core structure, bearing stator and hybrid radial magnetic bearing |
| CN109058295A (en) * | 2018-09-25 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of locking protection structure of magnetic suspension bearing and the magnetic suspension bearing with it |
| CN109654121A (en) * | 2018-12-18 | 2019-04-19 | 珠海格力电器股份有限公司 | Magnetic suspension skeleton and bearing assembly and bearing stator and compressor and air-conditioning |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6886484B2 (en) * | 2003-02-12 | 2005-05-03 | Georg K. Thomas | Composite tension rod terminal systems |
-
2019
- 2019-10-08 CN CN201910950366.8A patent/CN110864043B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3706226A1 (en) * | 1987-02-26 | 1988-09-08 | Union Special Gmbh | Device for aligning a bearing housing for the acceptance of a shaft in a location opening of a machine casing |
| US5949593A (en) * | 1998-03-16 | 1999-09-07 | Eastman Kodak Company | Off-loaded strut joint mirror support system |
| CN101248282A (en) * | 2005-08-24 | 2008-08-20 | 梅科斯特拉克斯勒股份公司 | Rotor shaft for magnetic bearing device |
| CN102906435A (en) * | 2010-03-03 | 2013-01-30 | D&M科技株式会社 | Active magnetic bearing |
| CN108679085A (en) * | 2018-06-14 | 2018-10-19 | 珠海格力电器股份有限公司 | Radial stator core structure, bearing stator and hybrid radial magnetic bearing |
| CN109058295A (en) * | 2018-09-25 | 2018-12-21 | 珠海格力电器股份有限公司 | A kind of locking protection structure of magnetic suspension bearing and the magnetic suspension bearing with it |
| CN109654121A (en) * | 2018-12-18 | 2019-04-19 | 珠海格力电器股份有限公司 | Magnetic suspension skeleton and bearing assembly and bearing stator and compressor and air-conditioning |
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| CN110864043A (en) | 2020-03-06 |
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