CN117240044A - Magnetic transmission coupling and flywheel energy storage device - Google Patents

Magnetic transmission coupling and flywheel energy storage device Download PDF

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Publication number
CN117240044A
CN117240044A CN202311517211.8A CN202311517211A CN117240044A CN 117240044 A CN117240044 A CN 117240044A CN 202311517211 A CN202311517211 A CN 202311517211A CN 117240044 A CN117240044 A CN 117240044A
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CN
China
Prior art keywords
magnet
ring body
magnetic
ring
mounting ring
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Granted
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CN202311517211.8A
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Chinese (zh)
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CN117240044B (en
Inventor
韩坤
苏森
卜庆瑞
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Huachi Kinetic Energy Beijing Technology Co ltd
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Huachi Kinetic Energy Beijing Technology Co ltd
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Priority to CN202311517211.8A priority Critical patent/CN117240044B/en
Publication of CN117240044A publication Critical patent/CN117240044A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16Mechanical energy storage, e.g. flywheels or pressurised fluids

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  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

The application discloses a magnetic transmission coupler and a flywheel energy storage device, wherein the magnetic transmission coupler comprises an inner rotor, an outer rotor and a shielding cover, the outer rotor comprises an outer mounting ring and an outer magnet arranged on the outer mounting ring, the inner rotor comprises an inner mounting ring and an inner magnet embedded on the inner mounting ring, the shielding cover is arranged in the outer mounting ring, the inner mounting ring is arranged in the shielding cover, the outer magnet is opposite to the inner magnet, and the inner magnet and the outer magnet are formed by alternately arranging permanent magnets with different magnetic properties. The inner magnet of the magnetic transmission coupler is firmly assembled, has stronger anti-falling capacity under the action of centrifugal force, can further meet the transmission requirement of high rotating speed and high torque, and has wide application scene.

Description

Magnetic transmission coupling and flywheel energy storage device
Technical Field
The application relates to the technical field of transmission equipment, in particular to a magnetic transmission coupler and a flywheel energy storage device.
Background
The magnetic transmission coupler belongs to a non-contact coupler, and generally consists of an inner magnet and an outer magnet, wherein the inner magnet is connected with a driven piece, the outer magnet is connected with a power piece, and the 2 magnets are separated by an isolation cover in the middle; besides the function of buffering and absorbing vibration of the elastic coupling, the magnetic transmission coupling is characterized in that the magnetic transmission coupling breaks through the structural form of the traditional coupling, adopts a brand-new magnetic coupling principle, realizes the transmission of force and moment between a driving shaft and a driven shaft without direct contact, can change dynamic sealing into static sealing, and realizes zero leakage; therefore, it is widely applied to occasions with special requirements on leakage
The 2 magnets of the magnetic transmission coupler in the related art are generally formed by arranging a plurality of permanent magnets with different magnetism, but when the magnetic transmission coupler runs at a high speed, the permanent magnets can be separated due to strong centrifugal force, so that the magnetic transmission coupler is difficult to meet the transmission requirement of high rotating speed and high torque, and the application scene is limited.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the related art to some extent. Therefore, the application provides the magnetic transmission coupler, the inner magnet of the magnetic transmission coupler is embedded on the inner mounting ring, compared with the mounting mode of the surface mount, the inner magnet is more firmly assembled, has stronger anti-falling capability under the action of centrifugal force, can further meet the transmission requirement of high rotating speed and high torque, and has wide application scene.
The embodiment of the application also provides a flywheel energy storage device.
The magnetic transmission coupler comprises an inner rotor, an outer rotor and an isolation cover, wherein the outer rotor comprises an outer mounting ring and outer magnets arranged on the outer mounting ring, the inner rotor comprises an inner mounting ring and inner magnets embedded on the inner mounting ring, the isolation cover is arranged in the outer mounting ring, the inner mounting ring is arranged in the isolation cover, the outer magnets are opposite to the inner magnets, and the inner magnets and the outer magnets are formed by alternately arranging permanent magnets with different magnetic properties.
The outer rotor comprises an outer mounting ring and an outer magnet arranged on the outer mounting ring, the inner rotor comprises an inner mounting ring and an inner magnet embedded on the inner mounting ring, the isolation cover is arranged in the outer mounting ring, the inner mounting ring is arranged in the isolation cover, the outer magnet is opposite to the inner magnet, and the inner magnet and the outer magnet are formed by alternately arranging permanent magnets with different magnetism, so that the inner magnet is arranged on the inner mounting ring in an embedded manner, compared with the surface mounting manner, the inner magnet is more firmly assembled, has stronger anti-falling capacity under the action of centrifugal force, can further meet the transmission requirement of high rotating speed and large torque, and has wide application fields
In some embodiments, the outer magnet is annularly arranged on the outer periphery of the inner magnet, the inner mounting ring is provided with a plurality of mounting grooves which extend along the axial direction of the inner magnet and are circumferentially arranged at intervals, and the permanent magnets of the inner magnet are correspondingly embedded in the plurality of mounting grooves.
In some embodiments, a distance from the outer magnet at an end of the mounting groove facing the outer magnet is less than a distance from the outer magnet at an outer circumferential surface of the inner mounting ring.
In some embodiments, an inner side of the mounting groove facing the outer magnet is arcuate.
In some embodiments, the inner mounting ring comprises an inner ring body and an outer ring body sleeved on the outer periphery of the inner ring body, the mounting groove is formed in the outer ring body, the outer ring body is a magnetic conductive piece, and the inner ring body is a high-strength non-magnetic conductive piece.
In some embodiments, the outer circumferential surface of the inner ring body is provided with a plurality of clamping blocks protruding towards the outer ring body and arranged at intervals along the circumferential direction of the inner ring body, the inner circumferential surface of the outer ring body is provided with a plurality of clamping grooves which are arranged at intervals along the circumferential direction of the outer ring body and penetrate through the outer ring body along the axial direction of the outer ring body, and the plurality of clamping blocks are correspondingly matched in the plurality of clamping grooves.
In some embodiments, the clamping groove communicates with an end of the mounting groove toward the inner ring body.
In some embodiments, the fixture block includes a connection portion connected with the inner ring body and a limit portion connected to an outer end of the connection portion, and at least part of the limit portion exceeds the connection portion in a circumferential direction of the inner ring body.
In some embodiments, the outer mounting ring comprises a cover plate and a ring plate encircling the periphery of the cover plate and extending along the direction perpendicular to the cover plate, one end of the ring plate, which is far away from the cover plate, is provided with an annular pressing plate extending along the periphery of the ring plate, the outer magnet is arranged between the annular pressing plate and the cover plate, and the cover plate is connected to an output shaft of an external driving device;
the inner rotor further comprises an upper gland and a support shaft, the upper gland and the support shaft are respectively connected with two ends of the inner magnet in the axial direction of the inner rotor, and the support shaft is sleeved on an input shaft of external acting equipment.
The flywheel energy storage device comprises a flywheel rotor, a driving motor and the magnetic transmission coupler, wherein the magnetic transmission coupler is characterized in that the outer mounting ring is connected with an output shaft of the driving motor, and the inner mounting ring is connected with the flywheel rotor.
According to the flywheel energy storage device provided by the embodiment of the application, by adopting the magnetic transmission coupler, the inner magnet of the magnetic transmission coupler is embedded on the inner mounting ring, so that compared with a surface mounting mode, the inner magnet is more firmly assembled, has stronger anti-falling capacity under the action of centrifugal force, further can meet the transmission requirement of high rotating speed and large torque, and improves the power of the energy storage flywheel.
Drawings
Fig. 1 is a cross-sectional view of an inner rotor of a magnetic drive coupling of an embodiment of the present application.
FIG. 2 is a cross-sectional view of a magnetic drive coupling according to an embodiment of the present application;
FIG. 3 is a schematic structural view of an outer rotor of a magnetic drive coupling according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of an outer rotor of a magnetic drive coupling of an embodiment of the present application;
FIG. 5 is a schematic view of the structure of the inner rotor of the magnetic drive coupling of an embodiment of the present application;
fig. 6 is a cross-sectional view of the inner rotor of a magnetic drive coupler of an embodiment of the present application.
Reference numerals:
the inner rotor 1, the inner mounting ring 11, the inner ring body 111, the outer ring body 112, the inner magnet 113, the clamping block 12, the upper gland 13, the supporting shaft 14, the isolation cover 2, the outer rotor 3, the outer mounting ring 31, the outer magnet 32, the cover plate 33 and the ring plate 34.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
As shown in fig. 1 to 6, the magnetic transmission coupling of the embodiment of the present application includes an inner rotor 1, an outer rotor 3, and an isolation cover 2.
Specifically, the outer rotor 3 includes an outer mounting ring 31 and an outer magnet 32 provided on the outer mounting ring 31, the inner rotor 1 includes an inner mounting ring 11 and an inner magnet 113 embedded on the inner mounting ring 11, the cage 2 is provided in the outer mounting ring 31, the inner mounting ring 11 is provided in the cage 2, the outer magnet 32 is opposite to the inner magnet 113, and the inner magnet 113 and the outer magnet 32 are each composed of alternating arrangement of permanent magnets of different magnetic properties.
It should be noted that, in practical application, the outer mounting ring 31 is connected to an output shaft of an external driving device, the inner mounting ring 11 is connected to an input shaft of an external working device, the driving device drives the outer mounting ring 31 to rotate so as to enable the outer magnet 32 to synchronously rotate, and the magnetic field effect of the outer magnet 32 and the inner magnet 113 can drive the inner rotor 1 to rotate so as to realize non-contact transmission between the driving device and the working device.
In addition, the inner rotor 1 is usually constructed by attaching the inner magnet 113 to the surface of the inner mounting ring 11, so that a larger centrifugal force is generated when the inner rotor 1 rotates at a high speed, and the inner magnet 113 mounted on the inner mounting ring 11 has a risk of falling off under the action of the centrifugal force.
According to the magnetic transmission coupler provided by the embodiment of the application, the outer rotor 3 comprises the outer mounting ring 31 and the outer magnet 32 arranged on the outer mounting ring 31, the inner rotor 1 comprises the inner mounting ring 11 and the inner magnet 113 embedded on the inner mounting ring 11, the isolation cover 2 is arranged in the outer mounting ring 31, the inner mounting ring 11 is arranged in the isolation cover 2, the outer magnet 32 is opposite to the inner magnet 113, and the inner magnet 113 and the outer magnet 32 are formed by alternately arranging permanent magnets with different magnetism, so that the inner magnet 113 is arranged on the inner mounting ring 11 in an embedded manner, and compared with the surface mounting manner, the inner magnet 113 is more firmly assembled, has stronger anti-falling capacity under the action of centrifugal force, and further can meet the transmission requirement of high rotating speed and high torque, and has wide application fields.
Preferably, as shown in fig. 1 to 6, the outer magnet 32 is disposed around the outer circumference of the inner magnet 113, and the inner mounting ring 11 has a plurality of mounting grooves extending in the axial direction thereof and spaced apart in the circumferential direction thereof, and a plurality of permanent magnets of the inner magnet 113 are correspondingly embedded in the plurality of mounting grooves. It should be noted that, the common magnetic transmission coupling includes a planar magnetic transmission coupling and a coaxial magnetic transmission coupling, the permanent magnets are axially inserted into the inner mounting ring 11, the outer magnets 32 surround the outer periphery of the inner magnets 113, and the magnetic transmission coupling of the present application can be constructed as a coaxial magnetic transmission coupling, and the vertically inserted permanent magnets have larger layout volume and high magnetic density, and can bear larger transmission torque.
Specifically, as shown in fig. 3 and 4, the outer mounting ring 31 includes a cover plate 33 and a ring plate 34 surrounding the outer periphery of the cover plate 33 and extending in a direction perpendicular to the cover plate 33, one end of the ring plate 34 away from the cover plate 33 is provided with an annular pressing plate extending in the circumferential direction thereof, the outer magnet 32 is provided between the annular pressing plate and the cover plate 33, and the cover plate 33 is connected to an output shaft of an external driving apparatus.
Further, as shown in fig. 5 and 6, the inner rotor 1 further includes an upper gland 13 and a support shaft 14, the upper gland 13 and the support shaft 14 are respectively connected to two ends of the inner magnet 113 in the axial direction of the inner rotor 1, and the support shaft 14 is sleeved on the input shaft of the external power device.
Further, the distance from the outer magnet 32 to the end of the mounting groove facing the outer magnet 32 is smaller than the distance from the outer circumferential surface of the inner mounting ring 11 to the outer magnet 32. In other words, the mounting groove is located inside the inner mounting ring 11, and compared with the mounting groove formed on the outer circumferential surface of the inner mounting ring 11, the mounting groove of the present application has a closed outer side, and the permanent magnet provided in the mounting groove does not have a problem of being thrown out from the outer side opening of the mounting groove, and the anti-drop effect is good.
Preferably, as shown in fig. 1, the inner side of the mounting slot facing the outer magnet 32 is arcuate. In other words, the outer ends of the permanent magnets arranged on the inner mounting ring 11 are round-head design, and the stress of the permanent magnets is utilized, so that the mechanical structure of the inner mounting ring 11 is optimized, and the stress concentration is reduced.
Alternatively, as shown in fig. 1, the inner mounting ring 11 includes an inner ring body 111 and an outer ring body 112 sleeved on the outer periphery of the inner ring body 111, the mounting groove is formed on the outer ring body 112, the outer ring body 112 is a magnetic conductive member, and the inner ring body 111 is a high-strength non-magnetic conductive member. Therefore, the high-strength inner ring body can be used for supporting the outer ring body, the structural strength of the whole inner mounting ring is improved, and the transmission requirement of high speed and large torque of the magnetic transmission coupler is met.
Further, as shown in fig. 1, the outer circumferential surface of the inner ring 111 is provided with a plurality of clamping blocks 12 protruding toward the outer ring 112 and arranged at intervals along the circumferential direction of the inner ring 111, the inner circumferential surface of the outer ring 112 is provided with a plurality of clamping grooves arranged at intervals along the circumferential direction thereof and penetrating through the outer ring 112 along the axial direction of the outer ring 112, and the plurality of clamping blocks 12 are correspondingly matched in the plurality of clamping grooves. Therefore, the inner ring body 111 and the outer ring body 112 are simple to match and convenient to assemble and disassemble, the outer ring body 112 can be locked by the matching of the buckle and the clamping groove, the outer ring body 112 can bear stronger centrifugal force, and the transmission requirement of the magnetic transmission coupler for high speed and large torque is met.
Preferably, as shown in fig. 1, the clamping groove communicates with an end of the mounting groove facing the inner ring body 111. Therefore, when the permanent magnet is inserted into the mounting groove, the mounting groove is allowed to deform by a small amount due to the fact that the inner side of the mounting groove is open, so that the assembly difficulty of the permanent magnet is reduced.
Further, as shown in fig. 1, the clamping block 12 includes a connecting portion connected to the inner ring body 111 and a limiting portion connected to an outer end of the connecting portion, and at least part of the limiting portion exceeds the connecting portion in a circumferential direction of the inner ring body 111. Therefore, the limiting part can play a role of a hook, and the outer ring body 112 is tensioned, so that the outer ring body 112 can bear larger centrifugal force.
Specifically, as shown in fig. 1, the limiting portion and the connecting portion form a general T-shaped structure, and protruding portions (limiting portions) on two sides of the T-shaped structure can both play roles of locking and fastening, so that the locking effect of the outer ring 112 is further improved.
The flywheel energy storage device comprises a flywheel rotor, a driving motor and the magnetic transmission coupling of the embodiment, wherein an outer mounting ring 31 is connected with an output shaft of the driving motor, and an inner mounting ring 11 is connected with the flywheel rotor.
According to the flywheel energy storage device provided by the embodiment of the application, by adopting the magnetic transmission coupler, the inner magnet 113 of the magnetic transmission coupler is embedded on the inner mounting ring 11, so that compared with a surface mounting mode, the inner magnet 113 is more firmly assembled, has stronger anti-falling capacity under the action of centrifugal force, and further can meet the transmission requirement of high rotating speed and high torque, and the power of the energy storage flywheel is improved.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (10)

1. The utility model provides a magnetic transmission shaft coupling, its characterized in that includes inner rotor, external rotor and cage, the external rotor includes outer collar and locates outer magnet on the outer collar, the inner rotor includes interior collar and inlays and establish interior magnet on the interior collar, the cage is located in the outer collar, interior collar is located in the cage, outer magnet with interior magnet is relative, just interior magnet with outer magnet is by the permanent magnet alternative arrangement of different magnetism constitutes.
2. The magnetic transfer coupling of claim 1, wherein said outer magnet ring is provided on an outer periphery of said inner magnet, said inner mounting ring has a plurality of mounting grooves extending in an axial direction thereof and arranged at intervals in a circumferential direction thereof, and a plurality of said permanent magnets of said inner magnet are correspondingly embedded in a plurality of said mounting grooves.
3. The magnetic transfer coupling of claim 2, wherein an end of the mounting groove facing the outer magnet is spaced from the outer magnet less than an outer circumferential surface of the inner mounting ring is spaced from the outer magnet.
4. The magnetic transfer coupling of claim 2, wherein an inner side of the mounting groove facing the outer magnet is arcuate.
5. The magnetic transmission coupling according to claim 2, wherein the inner mounting ring comprises an inner ring body and an outer ring body sleeved on the outer periphery of the inner ring body, the mounting groove is formed in the outer ring body, the outer ring body is a magnetic conductive member, and the inner ring body is a high-strength non-magnetic conductive member.
6. The magnetic transmission coupling according to claim 5, wherein the outer circumferential surface of the inner ring body is provided with a plurality of clamping blocks protruding toward the outer ring body and arranged at intervals in the circumferential direction of the inner ring body, the inner circumferential surface of the outer ring body is provided with a plurality of clamping grooves arranged at intervals in the circumferential direction thereof and penetrating through the outer ring body in the axial direction of the outer ring body, and the plurality of clamping blocks are correspondingly matched in the plurality of clamping grooves.
7. The magnetic drive coupling of claim 6, wherein the catch communicates with an end of the mounting groove that faces the inner ring body.
8. The magnetic drive coupling according to claim 6, wherein the fixture block includes a connection portion connected to the inner ring body and a stopper portion connected to an outer end of the connection portion, and at least a portion of the stopper portion exceeds the connection portion in a circumferential direction of the inner ring body.
9. The magnetic transfer coupling of claim 2, wherein the outer mounting ring comprises a cover plate and a ring plate encircling the outer periphery of the cover plate and extending in a direction perpendicular to the cover plate, an annular pressure plate extending in the circumferential direction of the ring plate is arranged at one end of the ring plate away from the cover plate, the outer magnet is arranged between the annular pressure plate and the cover plate, and the cover plate is connected to an output shaft of an external driving device;
the inner rotor further comprises an upper gland and a support shaft, the upper gland and the support shaft are respectively connected with two ends of the inner magnet in the axial direction of the inner rotor, and the support shaft is sleeved on an input shaft of external acting equipment.
10. A flywheel energy storage device comprising a flywheel rotor, a drive motor and a magnetic drive coupling according to any of claims 1-9, the outer mounting ring being connected to an output shaft of the drive motor and the inner mounting ring being connected to the flywheel rotor.
CN202311517211.8A 2023-11-15 2023-11-15 Magnetic transmission coupling and flywheel energy storage device Active CN117240044B (en)

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Application Number Priority Date Filing Date Title
CN202311517211.8A CN117240044B (en) 2023-11-15 2023-11-15 Magnetic transmission coupling and flywheel energy storage device

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Application Number Priority Date Filing Date Title
CN202311517211.8A CN117240044B (en) 2023-11-15 2023-11-15 Magnetic transmission coupling and flywheel energy storage device

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CN117240044A true CN117240044A (en) 2023-12-15
CN117240044B CN117240044B (en) 2024-03-19

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202616968U (en) * 2012-06-13 2012-12-19 戴立华 Magnetic coupling
US20170346382A1 (en) * 2014-12-05 2017-11-30 Junqi DIAO Permanent magnet speed governor having fixed magnetic gap
CN207559710U (en) * 2017-12-26 2018-06-29 上海硅泰电子有限公司 The rotor assembly and disc type electric machine of disc type electric machine
CN111030420A (en) * 2019-12-24 2020-04-17 浙江砉润科技有限公司 High-temperature-resistant cylindrical magnetic coupling
CN113270992A (en) * 2021-06-21 2021-08-17 广东汇四方精密磁材有限公司 Leakage-proof magnetic suspension type radial transmission magnetic coupling
CN113541359A (en) * 2021-08-05 2021-10-22 浙江盘毂动力科技有限公司 Anti-falling rotor disc of disc type motor
CN116566161A (en) * 2022-09-14 2023-08-08 中国科学院理化技术研究所 Non-contact low-temperature rotary mechanical shafting structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202616968U (en) * 2012-06-13 2012-12-19 戴立华 Magnetic coupling
US20170346382A1 (en) * 2014-12-05 2017-11-30 Junqi DIAO Permanent magnet speed governor having fixed magnetic gap
CN207559710U (en) * 2017-12-26 2018-06-29 上海硅泰电子有限公司 The rotor assembly and disc type electric machine of disc type electric machine
CN111030420A (en) * 2019-12-24 2020-04-17 浙江砉润科技有限公司 High-temperature-resistant cylindrical magnetic coupling
CN113270992A (en) * 2021-06-21 2021-08-17 广东汇四方精密磁材有限公司 Leakage-proof magnetic suspension type radial transmission magnetic coupling
CN113541359A (en) * 2021-08-05 2021-10-22 浙江盘毂动力科技有限公司 Anti-falling rotor disc of disc type motor
CN116566161A (en) * 2022-09-14 2023-08-08 中国科学院理化技术研究所 Non-contact low-temperature rotary mechanical shafting structure

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