CN219918537U - Magnetic suspension rotor device and magnetic suspension compressor of surface-mounted magnetic steel - Google Patents
Magnetic suspension rotor device and magnetic suspension compressor of surface-mounted magnetic steel Download PDFInfo
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- CN219918537U CN219918537U CN202320525906.XU CN202320525906U CN219918537U CN 219918537 U CN219918537 U CN 219918537U CN 202320525906 U CN202320525906 U CN 202320525906U CN 219918537 U CN219918537 U CN 219918537U
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- magnetic steel
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- mandrel
- limiting ring
- left end
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 239000000725 suspension Substances 0.000 title claims description 21
- 230000005389 magnetism Effects 0.000 claims abstract description 29
- 238000005339 levitation Methods 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract 2
- 230000007704 transition Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to the field of magnetic levitation motor shafts, in particular to a magnetic levitation rotor device with surface-mounted magnetic steel. The device comprises a mandrel, magnetic steel, a magnetism isolating ring, a sheath, a thermal sleeve assembly and a thrust disc; the mandrel is provided with a limiting block and a limiting ring which are integrally structured, and the mandrel is divided into a left end, a right end and a middle end; the magnetic isolation ring and the magnetic steel are axially arranged at the middle end of the mandrel, and the outer ring surface formed by combining the magnetic steel and the magnetic isolation ring is flush with the outer ring surfaces of the limiting block and the limiting ring; the sheath is sleeved on the outer ring surface of the magnetic steel, and two ends of the sheath are respectively attached to the limiting block and the limiting ring; the thrust disc is arranged at the left end of the mandrel and is abutted against the left end of the limiting block; the hot sleeve assembly is provided with two groups of hot sleeve assemblies which are respectively sleeved at the left end and the right end of the mandrel, the hot sleeve assembly at the left end is abutted to the thrust disc, and the hot sleeve assembly at the right end is abutted to the limiting ring. The device can well promote the rigidity of motor shaft to ensure that the precision of motor shaft can not receive centrifugal force's influence.
Description
Technical Field
The utility model relates to the field of magnetic levitation motor shafts, in particular to a magnetic levitation rotor device with surface-mounted magnetic steel and a magnetic levitation compressor.
Background
With the development of science and technology and the production demand, the magnetic levitation high-speed motor has become one of the hot spots of international electrotechnical field research. Because the magnetic suspension high-speed motor has the advantages of high energy density, small structural size, high efficiency and the like, the magnetic suspension high-speed motor is widely applied to industrial fields such as miniature gas turbines, high-speed centrifugal compressors, molecular pumps, high-speed processing centers, flywheel energy storage and the like at present, and the application range of the magnetic suspension high-speed motor is continuously expanded. In the working process of the magnetic suspension motor, the stability of a motor rotor is a key for ensuring the stable and efficient operation of the motor. The magnetic performance of the permanent magnet of the motor rotor and the dynamic balance of the rotor directly influence the working performance of the magnetic suspension motor.
The utility model of China (publication No. CN215871119U; bulletin day 2022.02.18) discloses a positioning tool, a motor shaft, an assembling tool, a rotor and a sheath tool of a magnetic suspension motor shaft, wherein the motor shaft comprises magnetic steel, a magnetism isolating ring, a front main shaft and a rear main shaft; the magnetic steels are stacked and distributed along the axial direction, and two adjacent magnetic steels are fixedly connected through glue. Because the motor shaft is composed of four parts, namely magnetic steel, a magnetism isolating ring, a front main shaft and a rear main shaft, a large amount of centrifugal force can be generated when the device operates, and each part of the motor shaft can be offset, so that the precision of the motor shaft is affected.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide the magnetic suspension rotor device of the surface-mounted magnetic steel, which can well improve the rigidity of a motor shaft, thereby ensuring that the precision of the motor shaft is not influenced by centrifugal force.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a magnetic suspension rotor device of surface-mounted magnetic steel comprises a core shaft, magnetic steel, two magnetism isolating rings, a sheath, a thermal sleeve component and a thrust disc; the mandrel is provided with a first limiting ring and a second limiting ring which are of an integrated structure, and the mandrel is divided into a left end, a right end and a middle end through the first limiting ring and the second limiting ring; an annular groove is formed between the first limiting ring and the second limiting ring of the mandrel, the two magnetism isolating rings and the magnetic steel are axially sleeved in the annular groove, and the outer annular surface formed by combining the magnetic steel and the magnetism isolating rings is flush with the outer annular surface of the annular groove; the inner rings of the magnetism isolating rings and the magnetic steel are mutually bonded with the annular groove, the two magnetism isolating rings are arranged on two sides of the magnetic steel and are respectively mutually bonded with the magnetic steel, the magnetic steel is formed by mutually bonding a plurality of groups of magnetic components, each group of magnetic components are uniformly bonded in the annular groove, and the two magnetism isolating rings are formed by bonding two semicircular semi-magnetism isolating rings; the sheath is sleeved on the outer ring surface of the annular groove, and two ends of the sheath are respectively attached to the first limiting ring and the second limiting ring.
Preferably, the device further comprises a thermal sleeve assembly and a thrust disc, wherein the thrust disc is arranged at the left end of the mandrel and is abutted against the left end of the first limiting ring; the hot sleeve assembly is provided with two groups of hot sleeve assemblies which are respectively sleeved at the left end and the right end of the mandrel, the hot sleeve assembly at the left end is abutted to the thrust disc, and the hot sleeve assembly at the right end is abutted to the second limiting ring.
Preferably, the left end of the limiting block is in a step shape, the thrust disc is arranged at the step of the limiting block, and the hot jacket assembly is abutted to the thrust disc.
Preferably, a gap is arranged between the thermal sleeve component and the limiting block, and the size of the gap is 0.2mm-0.5mm.
Preferably, a gap is provided between the sheath and the thrust disc.
Preferably, central holes which are axially arranged are arranged in the middle of the left end and the right end of the mandrel.
Preferably, the magnetic steel components are in a semicircular shape, a plurality of groups of magnetic steel components are adhered in the annular groove through glue, and the two groups of components are adhered to each other to form the magnetic ring.
The utility model further discloses a magnetic suspension compressor, and a rotor of the compressor adopts the magnetic suspension rotor device with the surface-mounted magnetic steel.
In summary, the utility model has the advantages that:
through with stopper and spacing ring an organic whole setting on the dabber to with separate magnetic ring and magnet steel axial setting on the middle-end of dabber, make magnet steel and separate the outer ring face that the magnetic ring combination formed and stopper and spacing ring flush with each other, will separate magnetic ring, magnet steel dabber through the sheath and link together, promoted the intensity and the rigidity of motor shaft, thereby ensured that the precision of motor shaft can not receive the influence of centrifugal force.
Drawings
FIG. 1 is a schematic cross-sectional view of a magnetic levitation rotor surface mounted magnetic steel device;
FIG. 2 is a cross-sectional view of a mandrel;
FIG. 3 is a schematic diagram of the structure of the mandrel and the magnetic steel, magnetism isolating ring;
FIG. 4 is a schematic view of the structure of a penetrating sheath;
FIG. 5 is a schematic diagram of a positioning tool;
FIG. 6 is a schematic structural diagram of a transition guide tooling;
FIG. 7 is a schematic structural diagram of a magnetic steel;
FIG. 8 is a partial cross-sectional view of the gap between the thermal sleeve assembly and the stop block;
reference numerals: 1. a mandrel; 2. magnetic steel; 3. a magnetism isolating ring; 4. a sheath; 5. a thermal sleeve assembly; 6. a thrust plate; 7. limiting tooling; 8. a transition guiding tool; 11. a limiting block; 12. a limiting ring; 13. a central bore; 21. a slit; 22. a void.
Detailed Description
The following describes the embodiments of the present utility model in detail with reference to the drawings.
As shown in fig. 1 to 8, a magnetic suspension rotor device of surface-mounted magnetic steel comprises a mandrel 1, magnetic steel 2, two magnetism isolating rings 3, a sheath 4, a thermal sleeve assembly 5 and a thrust disc 6; the mandrel 1 is provided with a first limiting ring 11 and a second limiting ring 12 which are integrally structured, and the mandrel 1 is divided into a left end, a right end and a middle end through the first limiting ring 11 and the second limiting ring 12; an annular groove is formed between the first limiting ring 11 and the second limiting ring 12 of the mandrel 1, the two magnetism isolating rings 3 and the magnetic steel 2 are axially sleeved in the annular groove, and the outer annular surface formed by combining the magnetic steel 2 and the magnetism isolating rings 3 is flush with the outer annular surface of the annular groove; the inner rings of the magnetism isolating rings 3 and the magnet steel 2 are bonded with the annular groove, the two magnetism isolating rings 3 are arranged on two sides of the magnet steel 2 and are respectively bonded with the magnet steel 2, the magnet steel 2 is formed by bonding a plurality of groups of magnetic components, each group of magnetic components are uniformly bonded in the annular groove, and the two magnetism isolating rings 3 are formed by bonding two semicircular semi-magnetism isolating rings 3; the sheath 4 is sleeved on the outer ring surface of the annular groove, and two ends of the sheath 4 are respectively attached to the first limiting ring 11 and the second limiting ring 12; the thrust disc 6 is arranged at the left end of the mandrel 1 and is abutted against the left end of the first limiting ring 11; the hot jacket assembly 5 is provided with two groups of hot jacket assemblies 5 which are respectively sleeved at the left end and the right end of the mandrel 1, the hot jacket assembly 5 at the left end is abutted to the thrust disc 6, the hot jacket assembly 5 at the right end is abutted to the second limiting ring 12 the left end of the limiting block 11 is in a step shape, the thrust disc 6 is arranged at the step of the limiting block 11, and the hot jacket assembly 5 is abutted to the thrust disc 6. A gap 21 is arranged between the thermal sleeve assembly 5 and the limiting block 11, and the size of the gap 21 is 0.2mm-0.5mm. A gap 22 is provided between the sheath 4 and the thrust disc 6. Central holes 13 are axially formed in the middle of the left end and the right end of the mandrel 1. The magnetic steel 2 is in a semicircular shape.
As shown in fig. 1 and 2, first, the stopper 11 and the stopper ring 12 are machined on the mandrel 1, and the left end, the right end and the middle end of the mandrel 1 are distinguished by arranging the stopper 11 at the left end of the mandrel 1 and the stopper 11 at the right end of the mandrel 1. The left side of the limiting block 11 is the left end of the mandrel 1, the right side of the limiting ring 12 is the right end of the mandrel 1, the middle ends of the limiting block 11 and the middle part of the limiting ring 12 are the middle ends of the mandrel 1, and the limiting block 11 and the limiting ring 12 are integrally arranged on the mandrel 1, so that the overall rigidity of a motor shaft can be enhanced.
As shown in fig. 1 and 3, the middle end of the mandrel 1 is provided with a plurality of magnetic steels 2 and two magnetism isolating rings 3, when in installation, the magnetism isolating rings 3, the magnetic steels 2 and the magnetism isolating rings 3 are required to be installed in sequence, and the two magnetism isolating rings 3 are respectively abutted against a limiting block 11 and a limiting plate and clamp the magnetic steels 2 in the limiting blocks. The outer ring surface formed by combining the magnetic steel 2 and the magnetism isolating ring 3 is flush with the outer ring surfaces of the limiting block 11 and the limiting ring 12, so that the sheath 4 is conveniently installed after the assembly, and the inner ring surface of the sheath 4 can be ensured to be tightly clung to the limiting block 11, the limiting plate and the magnetic steel 2 due to the flush outer ring surfaces of the limiting block 11 and the limiting ring 12, so that a good fixing effect is achieved. The sheath 4 is heated before being installed, and then is installed on the outer surface of the magnetic steel 2 after being heated, and the sheath 4 can shrink when being cooled due to the effect of thermal expansion and cold contraction, so that other fixing is not needed, and a good fixing effect can be achieved. The magnetic steel 2 is in a semicircular shape.
As shown in fig. 4, before the sheath 4 is installed, the limiting tool 7 is installed on the limiting block 11, the transition guiding tool 8 abutting against the limiting block 11 is installed on the right side of the limiting block 11, after the two are installed, the transition guiding tool 8 is installed on the right side shaft provided with the mandrel 1, and the heated sheath 4 needs to pass through the transition guiding tool 8, so that the overall accuracy of the mandrel 1 is not affected. Since the sheath 4 has high temperature at this time, the material of the transition guiding tool 8 has high hardness and high temperature resistance.
As shown in fig. 1, one end of the installed sheath 4 is on the limiting block 11, and the other end is on the limiting ring 12 and wraps the magnetic steel 2, and at this time, the limiting tool 7 and the transition guiding tool 8 need to be disassembled. Then wear to establish thrust disk 6 at the ladder department of stopper 11 left end, wear to establish hot jacket subassembly 5 at thrust disk 6 to butt in thrust disk 6, wherein hot jacket subassembly 5 sets up on the left end of dabber 1 rather than setting up on stopper 11, and when hot jacket subassembly 5 butt in thrust disk 6, there is gap 21 of 0.2mm-0.5mm on the left end of hot jacket subassembly 5 and stopper 11, in order to let the magnetism of main shaft magnetization as little as possible to hot jacket subassembly 5. A set of thermal sleeve assemblies 5 is also provided on the right end of the mandrel 1 and is brought into abutment with the stop collar 12. Center holes 13 are provided at both left and right ends of the mandrel 1, and are used as positioning references for workpieces during machining, and receive the self weight and cutting force of the workpieces. Wherein, be equipped with space 22 between sheath 4 and the thrust disk 6, can use the instrument to carry out the correction of beating to whole device.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A magnetic suspension rotor device of surface-mounted magnetic steel comprises a core shaft (1), magnetic steel (2), two magnetism isolating rings (3) and a sheath (4); the mandrel (1) is provided with a first limiting ring (11) and a second limiting ring (12) which are of an integrated structure, and the mandrel (1) is divided into a left end, a right end and a middle end through the first limiting ring (11) and the second limiting ring (12); an annular groove is formed between the first limiting ring (11) and the second limiting ring (12) in the mandrel (1), the two magnetism isolating rings (3) and the magnetic steel (2) are axially sleeved in the annular groove, and an outer annular surface formed by combining the magnetic steel (2) and the magnetism isolating rings (3) is flush with the outer annular surface of the annular groove; the inner rings of the magnetism isolating rings (3) and the magnetic steel (2) are adhered to the annular groove, the two magnetism isolating rings (3) are arranged on two sides of the magnetic steel (2) and are adhered to the magnetic steel (2) respectively, the magnetic steel (2) is composed of a plurality of groups of magnetic components, each group of magnetic components is uniformly adhered to the annular groove, and the two magnetism isolating rings (3) are formed by adhering two semicircular semi-magnetism isolating rings (3); the sheath (4) is sleeved on the outer ring surface of the annular groove, and two ends of the sheath (4) are respectively attached to the first limiting ring (11) and the second limiting ring (12).
2. The magnetic suspension rotor device of the surface mounted magnetic steel according to claim 1, further comprising a thermal sleeve assembly (5) and a thrust disc (6), wherein the thrust disc (6) is arranged at the left end of the mandrel (1) and is abutted against the left end of the first limiting ring (11); the hot sleeve assembly (5) is provided with two groups of hot sleeve assemblies which are respectively sleeved at the left end and the right end of the mandrel (1), the hot sleeve assembly (5) at the left end is abutted to the thrust disc (6), and the hot sleeve assembly (5) at the right end is abutted to the second limiting ring (12).
3. The magnetic suspension rotor device of the surface-mounted magnetic steel according to claim 2, wherein the left end of the first limiting ring (11) is in a step shape, the thrust disc (6) is arranged at the step of the first limiting ring (11), and the thermal sleeve assembly (5) is abutted to the thrust disc (6).
4. A magnetic suspension rotor device of surface mounted magnetic steel according to claim 3, characterized in that a gap (21) is arranged between the thermal sleeve assembly (5) and the first limiting ring (11), and the size of the gap (21) is 0.2mm-0.5mm.
5. A magnetic levitation rotor device of surface-mounted magnetic steel as claimed in claim 2, characterized in that a gap (22) is provided between the sheath (4) and the thrust disc (6).
6. The magnetic suspension rotor device of the surface-mounted magnetic steel according to claim 1, wherein central holes (13) which are axially arranged are arranged in the middle of the left end and the right end of the mandrel (1).
7. A surface mounted magnetic steel magnetic suspension rotor device according to claim 1, characterized in that the magnetic steel components are in the shape of semicircle rings, a plurality of groups of magnetic steel components are adhered in the annular groove through glue, and the two groups of components are adhered to each other to form the magnetic steel (2).
8. A magnetic levitation compressor, characterized in that the rotor of the compressor adopts a magnetic levitation rotor device of surface mounted magnetic steel according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320525906.XU CN219918537U (en) | 2023-03-14 | 2023-03-14 | Magnetic suspension rotor device and magnetic suspension compressor of surface-mounted magnetic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320525906.XU CN219918537U (en) | 2023-03-14 | 2023-03-14 | Magnetic suspension rotor device and magnetic suspension compressor of surface-mounted magnetic steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219918537U true CN219918537U (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320525906.XU Active CN219918537U (en) | 2023-03-14 | 2023-03-14 | Magnetic suspension rotor device and magnetic suspension compressor of surface-mounted magnetic steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219918537U (en) |
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2023
- 2023-03-14 CN CN202320525906.XU patent/CN219918537U/en active Active
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