CN213360854U - Modularized active magnetic suspension bearing device - Google Patents
Modularized active magnetic suspension bearing device Download PDFInfo
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- CN213360854U CN213360854U CN202021632929.3U CN202021632929U CN213360854U CN 213360854 U CN213360854 U CN 213360854U CN 202021632929 U CN202021632929 U CN 202021632929U CN 213360854 U CN213360854 U CN 213360854U
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Abstract
The utility model discloses a modularization initiative magnetic suspension bearing device, including a series of spare parts such as axial sensor seat, left end lid, thrust disc, axial sensor, auxiliary bearing seat, right-hand member lid, auxiliary bearing, bearing device inner circle, location axle sleeve, axial magnetic bearing stator seat, radial magnetic bearing stator, radial magnetic bearing rotor, radial sensor seat, bearing device outer lane and aviation socket. The whole system device has good radial and axial bearing capacity, has the advantages of compact structure, easiness in installation and interchange and the like, can reduce the maintenance and repair cost to the maximum extent, improves the interchangeability, is easy to realize specialized batch production like a rolling bearing, enables the design and application scenes of the active magnetic bearing to be more diversified, enhances the universality and the interchangeability of the active magnetic bearing, and improves the benefit.
Description
Technical Field
The utility model belongs to the technical field of magnetic suspension bearing, concretely relates to modularization initiative magnetic suspension bearing device. The device comprises a combined device of a radial magnetic bearing and an axial magnetic bearing, and also comprises an auxiliary protection system consisting of a series of parts such as an auxiliary bearing and the like, and the modularized design like a rolling bearing enhances the universality and interchangeability of the active magnetic suspension bearing, increases the possibility of mass production of the active magnetic suspension bearing, and expands the application range of the active magnetic suspension bearing.
Background
The existing various sliding bearings and rolling bearings relatively comprise an inner ring and an outer ring, the inner ring and the outer ring are in direct contact with moving parts of rolling bodies, and the defects of large frictional resistance, easy heating, large environmental pollution caused by lubricating oil or lubricating grease and the like exist. The magnetic suspension bearing has the advantages of no friction and no pollution, but most of the existing active magnetic suspension bearings cannot bear radial and axial composite loads and have the defects of complex structure, poor interchangeability, high maintenance cost and difficulty in mass production, so that the active magnetic bearing needs to be modularized like a rolling bearing during design, the product interchangeability is improved, the maintenance cost is reduced, and the operation profit of a factory is maximized.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming that traditional initiative magnetic suspension bearing interchangeability is poor, the maintenance cost is high, the utility model aims at providing a modularization initiative magnetic suspension bearing device, but reduce the cost of maintaining the maintenance in the at utmost, improve interchangeability and easily specialized batch production. The device has compact structure, and the design of parts is easy to install and replace, so that the design and application scenes of the active magnetic bearing are more diversified, the universality and interchangeability of the active magnetic bearing are enhanced, and the benefit is improved.
In order to achieve the purpose of the invention, the utility model adopts the following inventive concept:
in the modularized active magnetic suspension bearing system device, the axial bearing aspect selects a mode of generating suction by an axial magnetic bearing stator and a thrust disc, and the structure is proved to be a mature design by practice. Compared with the axial bearing aspect, the radial bearing selects the suction force generated between the radial magnetic bearing stator and the radial magnetic bearing rotor to overcome the gravity to realize stable suspension. Therefore, on the basis of previous researches, devices such as a radial magnetic bearing, an axial magnetic bearing, a radial sensor, an axial sensor, a protective bearing and the like are integrated into a combined magnetic suspension bearing module. The modularized combined magnetic suspension bearing system can be used for bearing the gravity of a horizontal mechanical main shaft and the axial force during mechanical work. The radial magnetic suspension bearing and the axial magnetic suspension bearing are designed in a modularized way like a rolling bearing, so that the cost can be reduced, and the mass production of specialized manufacturers is a precondition for realizing large-scale popularization of the active magnetic suspension bearing.
According to the above utility model, the utility model discloses a following technical scheme:
a modularized active magnetic suspension bearing device comprises a left end cover, a thrust disc, an axial sensor, a right end cover, an auxiliary bearing, a bearing device inner ring, an axial magnetic bearing stator seat, a radial magnetic bearing stator, a radial magnetic bearing rotor, a radial sensor and a bearing device outer ring, wherein the axial sensor, the thrust disc, the axial magnetic bearing stator and the axial magnetic bearing stator seat are sequentially installed between the bearing device inner ring and the bearing device outer ring on the inner side of the left end cover, the radial magnetic bearing stator, the radial magnetic bearing rotor and the radial sensor are installed in the middle between the left end cover and the right end cover, and the auxiliary bearing is installed in the right end cover on the inner side.
Preferably, the radial magnetic bearing rotor, the thrust disc, the positioning shaft sleeve and the inner ring of the auxiliary bearing are all nested on the inner ring of the bearing device, and the radial magnetic bearing stator, the axial magnetic bearing stator holder, the auxiliary bearing holder, the outer ring of the auxiliary bearing, the axial sensor holder and the radial sensor holder are all fixedly arranged in the outer ring of the bearing device. The radial magnetic bearing stator respectively generates radial suction to the magnetic bearing rotor to generate upward and downward suction; the modularized active magnetic suspension bearings are used in pairs, and the radial magnetic bearing rotor of the magnetic suspension bearing A is attracted by the upward attraction force F of the statorya-’And downward suction force Fya+’The radial magnetic bearing rotor of the magnetic bearing B is attracted upwards by the stator Fyb-’And downward suction force Fyb+’Resultant force F generated by two sets of radial magnetic bearingsy’Upwards, Fy’＝Fya-’-Fya+’+Fyb-’-Fyb+’，Fy’The magnitude of the resultant force F is equal to the gravity of a series of rotating components such as a radial magnetic bearing rotor, a thrust disc, a positioning shaft sleeve, a bearing inner ring and a mandrel and the like and the downward radial external load borne by the gravityyI.e. Fy＝Fy’。
Preferably, the axial magnetic bearing stator is nested in an axial magnetic bearing stator holder, which is compressed by the left end cap. The axial attraction force generated by the stator of the axial magnetic bearing A of the magnetic suspension bearing to the thrust disc is Fza’And the direction is leftward, and the axial suction force generated by the magnetic bearing B axial magnetic bearing stator to the thrust disc is Fzb’The resultant force F generated by two sets of axial magnetic bearing stators with the right directionz' left, Fz’＝Fza’-Fzb’，Fz’The magnitude of the axial external load F is equal to that of the axial external loadzI.e. Fz＝Fz’。
Preferably, the auxiliary bearing is two sets of angular contact ball bearings, a face-to-face installation mode is adopted, an outer ring is installed in an auxiliary bearing seat, an inner ring of the auxiliary bearing is not in contact with an inner ring of the bearing device, and the auxiliary bearing seat is installed in the outer ring of the bearing device and used for protecting a stator and a rotor of the magnetic bearing. Preferably, the auxiliary bearing inner ring is not in contact with the bearing device inner ring, and a large-gap fit structure with the radius gap of 0.1-0.2 mm is arranged.
Preferably, the radial sensor is installed in the radial sensor seat and fixed on the outer ring of the bearing device through a bolt, the axial sensor is installed in the axial sensor seat and fixed on the axial magnetic bearing stator seat through a bolt, the two sensor probes are symmetrically arranged in the horizontal direction of the radial sensor, the two sensor probes are symmetrically arranged in the vertical direction of the radial sensor and used for measuring radial displacement, the axial sensor measures the distance between the axial sensor and the thrust disc, and power supply lines of the radial magnetic bearing stator, the axial magnetic bearing stator, the radial sensor and the axial sensor are led out through a line channel and connected to an aviation socket.
Preferably, the bearing device inner ring and the mandrel are provided with ventilation channels, the active magnetic suspension bearing device adopts air cooling for heat dissipation, the axial sensor seat and the radial sensor seat are respectively connected and fixed with the bearing device outer ring through hexagon socket head cap screws, and the left end cover and the right end cover are respectively connected and fixed with the bearing device outer ring through hexagon socket head cap screws.
Compared with the prior art, the utility model, have following substantive characteristics and advantage:
1. the modularized active magnetic suspension bearing of the utility model is used as a key supporting part, when the modularized active magnetic suspension bearing is not installed on a main shaft, the centering property of the inner ring of the bearing is ensured, and meanwhile, the auxiliary bearing is used for bearing the gravity of parts such as a radial magnetic bearing rotor, a thrust disc, the inner ring of a bearing device and the like;
2. the utility model discloses after the device assembles the initiative magnetic bearing of modularization to the host computer axle, the radial magnetic force of combination magnetic bearing mainly bears the weight of host computer rotor axle and the radial work external load after the host computer operation, and the axial magnetic force of combination magnetic bearing will bear the axial work external load after the host computer operation, and non-contact suspension between the inner circle this moment and the inner circle of auxiliary bearing, the auxiliary bearing of installing inside combination magnetic bearing system no longer atress for the protection to the magnetic bearing stator and rotor when cutting off the power supply or the trouble unstability;
3. the utility model discloses device radial magnetic bearing rotor and thrust dish nest in bearing device inner race with interference fit's form, and the bearing device inner race of magnetic bearing is connected with the host computer pivot through interference fit, under normal operation, the high-speed rotatory host computer pivot can drive the bearing device inner race of magnetic suspension bearing, thrust dish and radial magnetic bearing rotor high-speed rotation;
4. the device of the utility model is simple in structure, convenient to use maintains simply.
Drawings
Fig. 1 is a schematic structural view of the modular active magnetic suspension bearing device of the present invention.
Fig. 2 is a schematic diagram of the working principle of the modular active magnetic suspension bearing of the present invention.
Detailed Description
The preferred embodiments of the present invention are detailed as follows:
the first embodiment is as follows:
in this embodiment, referring to fig. 1, as shown in fig. 1 and 2, a modular active magnetic suspension bearing device includes a left end cap 2, a thrust disc 3, an axial sensor 4, a right end cap 6, an auxiliary bearing 7, a bearing device inner ring 8, an axial magnetic bearing stator 10, an axial magnetic bearing stator holder 11, a radial magnetic bearing stator 12, a radial magnetic bearing rotor 13, a radial sensor 14, and a bearing device outer ring 16, wherein the axial sensor 4, the thrust disc 3, the axial magnetic bearing stator 10, and the axial magnetic bearing stator holder 11 are sequentially installed in the left end cap 2 between the bearing device inner ring 8 and the bearing device outer ring 16, the radial magnetic bearing stator 12, the radial magnetic bearing rotor 13, and the radial sensor 14 are installed in the middle between the left end cap 2 and the right end cap 6, and the auxiliary bearing 7 is installed in the right end cap 6. The device of the embodiment comprises a combined device of a radial magnetic bearing and an axial magnetic bearing, and also comprises an auxiliary protection system consisting of a series of parts such as an auxiliary bearing and the like, and the modularized design like a rolling bearing enhances the universality and interchangeability of the active magnetic suspension bearing, increases the possibility of mass production of the active magnetic suspension bearing, and expands the application range of the active magnetic suspension bearing.
Example two
This embodiment is substantially the same as the first embodiment, and is characterized in that:
in the present embodiment, the radial magnetic bearing rotor 13, the thrust disk 3, a positioning sleeve 9 and the inner ring of the auxiliary bearing 7 are all nested on the inner ring 8 of the bearing device, and the radial magnetic bearing stator 12, the axial magnetic bearing stator 10, the axial magnetic bearing stator holder 11, an auxiliary bearing holder 5, the outer ring of the auxiliary bearing 7, and an axial sensor holder 1 and a radial sensor holder 15 are all fixedly installed in the outer ring 16 of the bearing device. The radial magnetic bearing stator 12 generates radial, e.g., upward and downward, attractive forces on the magnetic bearing rotor 13, respectively; the modularized active magnetic suspension bearings are used in pairs, and the radial magnetic bearing rotor 13 of the magnetic suspension bearing A is attracted by the upward stator attraction Fya-’And downward suction force Fya+’The radial magnetic bearing rotor 13 of the magnetic bearing B is attracted by the stator upwardsyb-’And downward suction force Fyb+’Resultant force F generated by two sets of radial magnetic bearingsy’Upwards, Fy’＝Fya-’-Fya+’+Fyb-’-Fyb+’，Fy’The magnitude of the resultant force F is equal to the gravity of a series of rotating components such as a radial magnetic bearing rotor 13, a thrust disc 3, a positioning shaft sleeve 9, a bearing device inner ring 8, a mandrel and the like and the downward radial external load borne by the rotating componentsyI.e. Fy＝Fy’。
In the present embodiment, the axial magnetic bearing stator 10 is nested in an axial magnetic bearing stator holder 11, and the axial magnetic bearing stator holder 11 is compressed by the left end cover 2. The axial attraction force generated by the magnetic bearing A axial magnetic bearing stator 10 to the thrust disc 3 is Fza’And the direction is leftward, and the axial attraction force generated by the magnetic bearing B axial magnetic bearing stator 10 to the thrust disc 3 is Fzb’The resultant force F generated by two sets of axial magnetic bearing stators with the right directionz’To the left, Fz’＝Fza’-Fzb’，Fz’The magnitude of the axial external load F is equal to that of the axial external loadzI.e. Fz＝Fz’。
In this embodiment, the auxiliary bearing 7 is two sets of angular contact ball bearings, and is installed in a face-to-face manner, the outer ring is installed in the auxiliary bearing seat 5, the inner ring of the auxiliary bearing is not in contact with the inner ring 8 of the bearing device, and the auxiliary bearing seat 5 is installed in the outer ring 16 of the bearing device for protecting the stator and the rotor of the magnetic bearing. The auxiliary bearing inner ring and the bearing device inner ring are provided with a large clearance fit structure with a radius clearance of 0.1-0.2 mm.
In the embodiment, the radial sensor 14 is installed in the radial sensor seat 15 and fixed on the outer ring 16 of the bearing device through a bolt, the axial sensor 4 is installed in the axial sensor seat 1 and fixed on the axial magnetic bearing stator seat 11 through a bolt, the radial sensor 14 is provided with two sensor probes symmetrically arranged in the horizontal direction, two sensor probes symmetrically arranged in the vertical direction and used for measuring radial displacement, the axial sensor 4 is used for measuring the distance between the axial sensor and the thrust plate 3, and power supply wires of the radial magnetic bearing stator 12, the axial magnetic bearing stator 10, the radial sensor 14 and the axial sensor 4 are all led out through a line channel and connected to an aviation socket 17.
In this embodiment, the bearing device inner ring 8 and the mandrel are provided with ventilation channels, the active magnetic suspension bearing device adopts air cooling for heat dissipation, the axial sensor seat 1 and the radial sensor seat 15 are respectively connected and fixed with the bearing device outer ring 16 by hexagon socket head cap screws, and the left end cover 2 and the right end cover 6 are respectively connected and fixed with the bearing device outer ring 16 by hexagon socket head cap screws.
The modularized active magnetic suspension bearing of the embodiment is used as a key supporting part, when the modularized active magnetic suspension bearing is not installed on a main machine shaft, the centering performance of an inner ring 8 of a bearing device is ensured, and meanwhile, an auxiliary bearing 7 is subjected to the gravity of parts such as a radial magnetic bearing rotor 13, a thrust disc 3, a bearing inner ring 8, a spindle and the like; after the modularized active magnetic bearing is assembled on a main machine shaft, the radial magnetic force of the combined magnetic bearing mainly bears the gravity of a main machine rotor shaft and the radial working external load after the main machine operates, the axial magnetic force of the combined magnetic bearing bears the axial working external load after the main machine operates, at the moment, the inner ring 8 of the bearing device and the inner ring of the auxiliary bearing 7 are in non-contact suspension, the auxiliary bearing 7 arranged in the combined magnetic bearing system is not stressed any more, and the combined magnetic bearing is used for protecting the stator and the rotor of the magnetic bearing when power is off or fault instability occurs. The radial magnetic bearing rotor 13 and the thrust disc 3 are nested on the bearing device inner ring 8 in an interference fit manner, the bearing device inner ring 8 of the magnetic bearing is connected with the main machine rotating shaft through the interference fit manner, and under normal operation, the main machine rotating shaft rotating at high speed can drive the bearing device inner ring 8 of the magnetic suspension bearing, the thrust disc 3 and the radial magnetic bearing rotor 13 to rotate at high speed. The system device of the modularized active magnetic suspension bearing device like a rolling bearing has good radial and axial bearing capacity, has the advantages of compact structure, easiness in installation and exchange and the like, can reduce the maintenance and repair cost to the maximum extent, improves the interchangeability, is easy to realize specialized batch production like the rolling bearing, enables the design and application scenes of the active magnetic suspension bearing to be diversified, enhances the universality and the interchangeability of the active magnetic bearing, and improves the benefit.
The above description is combined with the drawings to explain the embodiment of the present invention, but the present invention is not limited to the above embodiments, and can also be according to the present invention to make various changes in the purpose of creation, all according to the present invention the utility model discloses change, modification, substitution, combination or simplification of doing under the spirit essence and principle of technical scheme the present invention should be equivalent replacement mode, as long as accord with the utility model discloses a utility model aims at, as long as do not deviate from the technical principle and utility model concept, all belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a modularization initiative magnetic suspension bearing device, includes left end cover (2), thrust dish (3), axial sensor (4), right-hand member lid (6), auxiliary bearing (7), bearing unit inner circle (8), axial magnetic bearing stator (10), axial magnetic bearing stator seat (11), radial magnetic bearing stator (12), radial magnetic bearing rotor (13), radial sensor (14) and bearing unit outer lane (16), its characterized in that: an axial sensor (4), a thrust disc (3), an axial magnetic bearing stator (10) and an axial magnetic bearing stator seat (11) are sequentially arranged between the inner ring (8) of the bearing device and the outer ring (16) of the bearing device in the inner side of the left end cover (2), a radial magnetic bearing stator (12), a radial magnetic bearing rotor (13) and a radial sensor (14) are arranged in the middle between the left end cover (2) and the right end cover (6), and an auxiliary bearing (7) is arranged in the inner side of the right end cover (6).
2. The modular active magnetic bearing device of claim 1, wherein: the radial magnetic bearing rotor (13), the thrust disc (3), the positioning shaft sleeve (9) and the inner ring of the auxiliary bearing (7) are all nested on the inner ring (8) of the bearing device, and the radial magnetic bearing stator (12), the axial magnetic bearing stator (10), the axial magnetic bearing stator seat (11), the auxiliary bearing seat (5), the outer ring of the auxiliary bearing (7), the axial sensor seat (1) and the radial sensor seat (15) are all fixedly arranged in the outer ring (16) of the bearing device.
3. The modular active magnetic bearing device of claim 2, wherein: the axial magnetic bearing stator (10) is nested in the axial magnetic bearing stator seat (11), and the axial magnetic bearing stator seat (11) is tightly pressed by the left end cover (2).
4. The modular active magnetic bearing device of claim 2, wherein: the auxiliary bearing (7) is two sets of angular contact ball bearings, a face-to-face installation mode is adopted, an outer ring is installed in an auxiliary bearing seat (5), an inner ring of the auxiliary bearing is not in contact with an inner ring (8) of a bearing device, and the auxiliary bearing seat (5) is installed in an outer ring (16) of the bearing device.
5. The modular active magnetic bearing device of claim 2, wherein: the radial sensor (14) is arranged in a radial sensor seat (15) and is fixed on an outer ring (16) of the bearing device through a bolt, the axial sensor (4) is arranged in an axial sensor seat (1) and is fixed on an axial magnetic bearing stator seat (11) through a bolt, two sensor probes are symmetrically arranged in the horizontal direction of the radial sensor (14), two sensor probes are symmetrically arranged in the vertical direction, the axial sensor (4) measures the distance between the axial sensor and a thrust disc (3), and power supply lines of the radial magnetic bearing stator (12), the axial magnetic bearing stator (10), the radial sensor (14) and the axial sensor (4) are led out through a line channel and connected to an aviation socket (17).
6. The modular active magnetic bearing device of claim 1, wherein: the bearing device inner ring (8) and the mandrel are provided with ventilation ducts, the active magnetic suspension bearing device adopts air cooling heat dissipation, the axial sensor seat (1) and the radial sensor seat (15) are respectively connected and fixed with the bearing device outer ring (16) by inner hexagon screws, and the left end cover (2) and the right end cover (6) are respectively connected and fixed with the bearing device outer ring (16) by inner hexagon screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021632929.3U CN213360854U (en) | 2020-08-08 | 2020-08-08 | Modularized active magnetic suspension bearing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021632929.3U CN213360854U (en) | 2020-08-08 | 2020-08-08 | Modularized active magnetic suspension bearing device |
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| CN213360854U true CN213360854U (en) | 2021-06-04 |
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| CN202021632929.3U Active CN213360854U (en) | 2020-08-08 | 2020-08-08 | Modularized active magnetic suspension bearing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128244A (en) * | 2020-08-08 | 2020-12-25 | 上海大学 | Modularized active magnetic suspension bearing device |
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2020
- 2020-08-08 CN CN202021632929.3U patent/CN213360854U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128244A (en) * | 2020-08-08 | 2020-12-25 | 上海大学 | Modularized active magnetic suspension bearing device |
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