CN221227290U - Hybrid magnetic suspension bearing assembly for high-speed motor - Google Patents
Hybrid magnetic suspension bearing assembly for high-speed motor Download PDFInfo
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- CN221227290U CN221227290U CN202322585067.3U CN202322585067U CN221227290U CN 221227290 U CN221227290 U CN 221227290U CN 202322585067 U CN202322585067 U CN 202322585067U CN 221227290 U CN221227290 U CN 221227290U
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- rotating shaft
- permanent magnet
- shell
- side permanent
- stator
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- 239000000725 suspension Substances 0.000 title claims abstract description 27
- 230000005389 magnetism Effects 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 8
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model belongs to the technical field of high-speed suspension motor bearings, and discloses a hybrid magnetic suspension bearing assembly for a high-speed motor. The device comprises a rotating shaft and an axial electromagnetic thrust bearing; rotor side permanent magnets are arranged on the periphery of the upper part and the periphery of the lower part of the rotating shaft, and a stator side permanent magnet, a magnetism isolating ring and a stator side permanent magnet are sequentially arranged on the periphery of the rotating shaft at each rotor side permanent magnet from top to bottom; the permanent magnets at the side of the stator at the bottom are connected with the fixed plates, the outer end of one fixed plate is provided with an axial electromagnetic thrust bearing, the periphery of the rotating shaft is provided with a shell, one end of the shell is connected with the mounting fixed end cover, and a motor stator is arranged between the shell and the rotating shaft; a gap exists between the rotating shaft and the shell. Through radial permanent magnetism suspension bearing and axial electromagnetic thrust bearing structure, very big reduce cost, and not receive to start and stop the restriction, long service life improves production efficiency. The bearing requirement of the high-speed motor under the existing working condition is met.
Description
Technical Field
The utility model belongs to the technical field of high-speed suspension motor bearings, and relates to a hybrid magnetic suspension bearing assembly for a high-speed motor.
Background
The bearings used by the existing high-speed suspension motor are generally of two structural types, namely an electromagnetic suspension bearing and an air suspension bearing. The electromagnetic suspension bearing floats the rotating shaft by adopting a radial electromagnetic suspension bearing formed by a plurality of groups of electromagnets, the axial electromagnetic suspension bearing controls the thrust disc to fix the axial position of the rotating shaft, the electromagnetic suspension bearing is matched with the displacement sensor, the whole set of high-speed motor needs to use two groups of electromagnetic suspension bearings and three groups of displacement sensors, and the manufacturing cost of the plurality of groups of electromagnets and the sensors is higher, so that the whole manufacturing cost of the bearing with the structure is higher, the working procedure is complicated, the production and preparation period is increased, and the production efficiency of products is reduced. The air suspension bearing has larger limiting conditions, can only be used on motors with the power below 300KW, has limited start and stop times, has the service life of less than 10 years, and cannot bear the over-high rotating speed.
Disclosure of utility model
The utility model aims to overcome the defects in the background technology, and provides a hybrid magnetic suspension bearing assembly for a high-speed motor, which is characterized in that the cost is greatly reduced through a radial permanent magnet suspension bearing and an axial electromagnetic thrust bearing structure, and the hybrid magnetic suspension bearing assembly is not limited by start and stop, has long service life and improves the production efficiency. The bearing requirement of the high-speed motor under the existing working condition is met.
The technical scheme adopted for solving the technical problems is as follows: a hybrid magnetic suspension bearing assembly for a high-speed motor comprises a rotating shaft and an axial electromagnetic thrust bearing; rotor side permanent magnets are arranged on the periphery of the upper part and the periphery of the lower part of the rotating shaft, and a stator side permanent magnet, a magnetism isolating ring and a stator side permanent magnet are sequentially arranged on the periphery of the rotating shaft at each rotor side permanent magnet from top to bottom; the permanent magnets at the side of the stator at the bottom are connected with the fixed plates, the outer end of one fixed plate is provided with an axial electromagnetic thrust bearing, the periphery of the rotating shaft is provided with a shell, one end of the shell is connected with the mounting fixed end cover, and a motor stator is arranged between the shell and the rotating shaft; a gap exists between the rotating shaft and the shell.
The mounting fixed end cover is also provided with an axial displacement sensor. The axial displacement sensor is connected with the installation fixing end cover through a connecting piece.
Further, the stator side permanent magnet, the magnetism isolating ring and the stator side permanent magnet jointly form a fixed magnet mechanism.
Further, the fixed end cover and the axial electromagnetic thrust bearing are arranged at the same end, and the fixed magnet mechanism which is arranged at the same end with the axial electromagnetic thrust bearing is arranged between the fixed end cover and the rotating shaft; the fixed magnet mechanism at the other end is arranged between the shell and the rotating shaft.
Further, grooves are respectively formed in the peripheries of the upper portion and the lower portion of the rotating shaft, and the rotor-side permanent magnets are arranged in the grooves.
Further, the axial displacement sensor is disposed below the axial electromagnetic thrust bearing.
Further, the stator side permanent magnet and the rotor side permanent magnet are made of neodymium iron boron permanent magnets.
Further, the stator side permanent magnet, the magnetism isolating ring, the stator side permanent magnet and the fixing plate are fixedly connected through bolts.
Further, the fixing plate is fixedly connected with the installation fixing end cover and the shell through bolts.
Further, the inner magnetic pole of the permanent magnet at the stator side is the same as the outer magnetic pole of the permanent magnet at the rotor side.
Further, the assembly is further provided with a PLC control system, the axial displacement sensor and the axial electromagnetic thrust bearing are respectively connected with the PLC control system, and the assembly is not limited to a specific model, so that the working function of the assembly is realized.
Compared with the prior art, the utility model has the following beneficial effects:
A hybrid magnetic bearing assembly for high-speed motor, simple structure, convenient operation practices thrift the cost, has shortened production time, has reduced the cost of labor. Long service life.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of a hybrid magnetic bearing assembly for a high speed motor according to the present utility model.
Fig. 2 is an exploded view of a hybrid magnetic bearing assembly for a high speed motor according to the present utility model.
In the figure, 1, an axial displacement sensor, 2, a rotating shaft, 3, an axial electromagnetic thrust bearing, 4, a fixed end cover, 5, a fixed plate A,6, a stator side permanent magnet A,7, a magnetism isolating ring A,8, a stator side permanent magnet B,9, a rotor side permanent magnet A,10, a shell, 11, a motor stator, 12, a fixed plate B,13, a stator side permanent magnet C,14, a magnetism isolating ring B,15, a stator side permanent magnet D,16 and a rotor side permanent magnet B.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to the following examples. The components involved in the embodiment are not limited to a specific model, and the working functions of the components can be realized.
Example 1
A hybrid magnetic suspension bearing assembly for a high-speed motor, as shown in fig. 1, comprises a rotating shaft 2 and an axial electromagnetic thrust bearing 3; rotor side permanent magnets are arranged on the periphery of the upper part and the lower part of the rotating shaft 2, and a stator side permanent magnet, a magnetism isolating ring and a stator side permanent magnet are sequentially arranged on the periphery of the rotating shaft 2 at each rotor side permanent magnet from top to bottom; the permanent magnets at the stator side at the bottom are connected with fixed plates, the outer end of one fixed plate is provided with an axial electromagnetic thrust bearing 3, the periphery of the rotating shaft 2 is provided with a shell 10, one end of the shell 10 is connected with a mounting fixed end cover 4, and a motor stator 11 is arranged between the shell 10 and the rotating shaft 2; a gap exists between the rotating shaft 2 and the shell 10; the magnetic poles of the inner ring of the permanent magnet at the same side of the stator are the same as the magnetic poles of the outer ring of the permanent magnet at the same side of the rotor.
The mounting and fixing end cover 4 is also provided with an axial displacement sensor 1.
The stator side permanent magnet, the magnetism isolating ring and the stator side permanent magnet form a fixed magnet mechanism together.
The fixed end cover 4 is arranged at the same end with the axial electromagnetic thrust bearing 3, and the fixed magnet mechanism arranged at the same end with the axial electromagnetic thrust bearing 3 is arranged between the fixed end cover 4 and the rotating shaft 2; the fixed magnet mechanism at the other end is arranged between the housing 10 and the rotating shaft 2.
Grooves are respectively arranged on the periphery of the upper part and the lower part of the rotating shaft 2, and rotor side permanent magnets are arranged in the grooves.
The axial displacement sensor 1 is arranged below the axial electromagnetic thrust bearing 3.
The stator side permanent magnet and the rotor side permanent magnet are made of neodymium iron boron permanent magnets.
The stator side permanent magnet, the magnetism isolating ring, the stator side permanent magnet and the fixing plate are connected and fixed through bolts.
The fixing plate is fixedly connected with the installation fixing end cover 4 and the shell 10 through bolts.
The assembly is also provided with a PLC control system, the axial displacement sensor 1 and the axial electromagnetic thrust bearing 3 are respectively connected with the PLC control system, and the assembly is not limited to a specific model, and the working function of the assembly is realized.
The utility model provides a mixed magnetic suspension bearing assembly for a high-speed motor, which is characterized in that during specific production, two rotor side permanent magnets are respectively fixed on the upper part and the lower part of a rotating shaft 2 through hot mounting, wherein a fixed plate, a stator side permanent magnet, a magnetism isolating ring and a stator side permanent magnet are connected through bolts to form a radial permanent magnet suspension bearing mechanism, the fixed plate is fixed with a mounting fixed end cover 4 through bolts, and the mounting of the radial permanent magnet suspension bearing mechanism in the mounting fixed end cover 4 is completed; the upper part of the device is connected with a fixed plate, a stator side permanent magnet, a magnetism isolating ring and a stator side permanent magnet through bolts to form a radial permanent magnet suspension bearing mechanism, and the fixed plate is fixed with the shell 10 through bolts to complete the installation of the radial permanent magnet suspension bearing mechanism in the shell 10. And the installation fixing end cover 4 is connected with the shell 10 through bolts, and the axial electromagnetic thrust bearing 3 and the axial displacement sensor 1 are installed on the installation fixing end cover 4, so that the whole assembly installation is completed.
When in use, because the magnetic poles of the inner ring of the permanent magnet at the stator side and the magnetic poles of the outer ring of the permanent magnet at the rotor side are the same, repulsive force is generated to suspend the rotating shaft 2 at the center of the motor stator 11, and then the axial electromagnetic thrust bearing 3 and the axial displacement sensor 1 are used for stabilizing the rotating shaft in the axial direction, so that the use purpose can be achieved.
While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (7)
1. The hybrid magnetic suspension bearing assembly for the high-speed motor is characterized by comprising a rotating shaft (2) and an axial electromagnetic thrust bearing (3); rotor side permanent magnets are arranged on the periphery of the upper part and the lower part of the rotating shaft (2), and the periphery of the rotating shaft (2) at which each rotor side permanent magnet is arranged is sequentially provided with a stator side permanent magnet, a magnetism isolating ring and a stator side permanent magnet from top to bottom; the permanent magnets at the side of the stator at the bottom are connected with the fixed plates, the outer end of one fixed plate is provided with an axial electromagnetic thrust bearing (3), the periphery of the rotating shaft (2) is provided with a shell (10), one end of the shell (10) is connected with the installation fixed end cover (4), and a motor stator (11) is arranged between the shell (10) and the rotating shaft (2); a gap exists between the rotating shaft (2) and the shell (10); the magnetic poles of the inner ring of the permanent magnet at the stator side are the same as the magnetic poles of the outer ring of the permanent magnet at the rotor side.
2. A hybrid magnetic bearing assembly for a high speed electric motor according to claim 1, characterized in that the mounting stationary end cap (4) is further provided with an axial displacement sensor (1).
3. A hybrid magnetic bearing assembly for a high speed motor as recited in claim 2, wherein the stator side permanent magnets, the magnetically isolated ring, and the stator side permanent magnets together comprise a fixed magnet mechanism.
4. A hybrid magnetic bearing assembly for a high speed motor according to claim 3, wherein the mounting fixed end cap (4) is arranged at the same end as the axial electromagnetic thrust bearing (3), and the fixed magnet mechanism arranged at the same end as the axial electromagnetic thrust bearing (3) is arranged between the mounting fixed end cap (4) and the rotating shaft (2); the fixed magnet mechanism at the other end is arranged between the shell (10) and the rotating shaft (2).
5. A hybrid magnetic bearing assembly for a high-speed motor according to claim 4, wherein grooves are provided on the outer circumferences of the upper and lower portions of the rotating shaft (2), respectively, and rotor-side permanent magnets are provided in the grooves.
6. A hybrid magnetic bearing assembly for a high speed electric motor according to claim 5, characterized in that the axial displacement sensor (1) is arranged below the axial electromagnetic thrust bearing (3).
7. A hybrid magnetic bearing assembly for a high speed motor as recited in claim 6, wherein the stator side permanent magnets and the rotor side permanent magnets are neodymium-iron-boron permanent magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322585067.3U CN221227290U (en) | 2023-09-22 | 2023-09-22 | Hybrid magnetic suspension bearing assembly for high-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322585067.3U CN221227290U (en) | 2023-09-22 | 2023-09-22 | Hybrid magnetic suspension bearing assembly for high-speed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221227290U true CN221227290U (en) | 2024-06-25 |
Family
ID=91574130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322585067.3U Active CN221227290U (en) | 2023-09-22 | 2023-09-22 | Hybrid magnetic suspension bearing assembly for high-speed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221227290U (en) |
-
2023
- 2023-09-22 CN CN202322585067.3U patent/CN221227290U/en active Active
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