CN110925306A - Integrated magnetic suspension bearing - Google Patents
Integrated magnetic suspension bearing Download PDFInfo
- Publication number
- CN110925306A CN110925306A CN201910950393.5A CN201910950393A CN110925306A CN 110925306 A CN110925306 A CN 110925306A CN 201910950393 A CN201910950393 A CN 201910950393A CN 110925306 A CN110925306 A CN 110925306A
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- Prior art keywords
- axial
- bearing
- radial
- assembly
- magnetic suspension
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0461—Details of the magnetic circuit of stationary parts of the magnetic circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0485—Active magnetic bearings for rotary movement with active support of three degrees of freedom
Abstract
The integrated magnetic suspension bearing comprises an axial bearing assembly and a radial bearing assembly, wherein a containing groove is formed in the axial direction of the axial bearing assembly, the radial bearing assembly is arranged in the containing groove and fixed with the axial bearing assembly, and the inner diameter of the axial bearing assembly is aligned with the inner diameter of the radial bearing assembly. The axial bearing assembly is axially provided with the accommodating groove, and the radial bearing assembly is fixed in the accommodating groove, so that the radial bearing and the axial bearing are integrated into a whole, the axial size of the magnetic suspension bearing is effectively reduced, the overall structure is optimized, the overall axial size of the whole machine is reduced, the whole machine can be more conveniently applied to small-space occasions, and meanwhile, the radial bearing and the axial bearing are not required to be respectively assembled when the whole machine is assembled, the assembly difficulty is reduced, and the assembly efficiency is improved; the coaxiality effect of the assembled complete machine is good, and the magnetic suspension bearing is favorable for controlling and adjusting the suspension precision of the rotor.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to an integrated magnetic suspension bearing.
Background
The magnetic suspension bearing is a low-loss and high-performance bearing, wherein the rotor is suspended in the air by utilizing the action of electromagnetic force, so that the rotor is not in mechanical contact with a stator and is not in mechanical friction. The high-speed magnetic suspension bearing has the advantages of no mechanical wear, low energy consumption, low noise, long service life, no need of lubrication and sealing, no oil pollution and the like while realizing high rotation speed of the rotor, and the rotation speed of the rotor of the magnetic suspension bearing is only limited by the tensile strength of a rotor material, so that the peripheral speed of the magnetic suspension bearing can be very high, and the magnetic suspension bearing is more and more widely applied to high-speed equipment.
Magnetic suspension bearings can be divided into three categories according to the working principle of the magnetic suspension bearings:
(1) an Active Magnetic Bearing (AMB), also called an Active Magnetic Bearing or an electromagnetic suspension Bearing, suspends a rotor by controllable electromagnetic force. The active magnetic suspension bearing has the advantages that the position of a rotor, the rigidity of the bearing and the damping can be determined by a control system, and the like, so the active magnetic suspension bearing is most widely applied in the field of magnetic suspension application.
(2) Passive Magnetic Bearing (PMB), also called Passive Magnetic Bearing, realizes Passive support of rotor part or all degrees of freedom by the electromagnetic force of permanent magnet, and has the advantages of small volume, no power consumption, simple structure, etc.
(3) Hybrid Magnetic Bearing (HMB for short) has a structure containing both an electromagnet and a permanent magnet or superconductor, and has the comprehensive characteristics of both an active Magnetic Bearing and a passive Magnetic Bearing.
Among the three magnetic suspension bearing structures, the most widely used active magnetic suspension bearing is currently, and the active magnetic suspension bearing is generally arranged in a manner of separating a radial bearing from an axial bearing, so that the axial size is increased, and the increase of the overall size of a product in the axial direction is influenced.
Disclosure of Invention
One of the purposes of the invention is to provide an integrated magnetic suspension bearing which integrates a radial bearing and an axial bearing, effectively reduces the axial size of the magnetic suspension bearing, optimizes the overall structure, reduces the overall axial size of the whole machine, and is more convenient to be applied to occasions with small space.
The purpose of the invention is realized by the following technical scheme:
the integrated magnetic suspension bearing comprises an axial bearing assembly and a radial bearing assembly, wherein the axial bearing assembly is provided with a containing groove along the axial direction, the radial bearing assembly is arranged in the containing groove and fixed with the axial bearing assembly, and the inner diameter of the axial bearing assembly is aligned with the inner diameter of the radial bearing assembly. The axial bearing assembly is axially provided with the accommodating groove, and the radial bearing assembly is fixed in the accommodating groove, so that the radial bearing and the axial bearing are integrated into a whole, the axial size of the magnetic suspension bearing is effectively reduced, the overall structure is optimized, the overall axial size of the whole machine is reduced, the whole machine can be more conveniently applied to small-space occasions, and meanwhile, the radial bearing and the axial bearing are not required to be respectively assembled when the whole machine is assembled, the assembly difficulty is reduced, and the assembly efficiency is improved; the coaxiality effect of the assembled complete machine is good, and the magnetic suspension bearing is favorable for controlling and adjusting the suspension precision of the rotor.
Further, axial bearing subassembly is including aligning and being two axial stator core that the clearance set up, and set up respectively two axial winding of axial stator core's inside, the holding tank is seted up two on one of them of axial stator core. The gap between the two axial stator cores is used for placing a thrust disc fixed on the rotor, the axial winding is used for generating magnetic force to enable the thrust disc to keep axial balance, so that the rotor is restrained in the axial direction, the rotor is finally suspended in the air in the axial direction, the containing groove is formed in the axial stator cores, the radial bearing assembly can be located in the axial stator cores, the radial bearing and the axial bearing are integrated into a whole, the axial size of the magnetic suspension bearing is effectively reduced, the overall structure is optimized, the overall axial size of the whole machine is reduced, the magnetic suspension bearing is more conveniently applied to occasions with small space, meanwhile, the radial bearing and the axial bearing are not required to be assembled respectively when the whole machine is assembled, and the assembling difficulty is.
Furthermore, the axial windings are respectively positioned on the opposite sides of the gap between the two axial stator cores and are symmetrically arranged. The axial windings are respectively positioned on the opposite sides of the gap between the two axial stator cores, so that the axial windings are closest to the thrust disk fixed on the rotor, and the influence on the axial stability of the rotor caused by weakening of magnetic force generated by the axial windings due to too long distance is avoided.
Further, axial protection components are symmetrically arranged on opposite sides of a gap between the two axial stator cores. The axial protection component is used for preventing the thrust disc fixed on the rotor from contacting and rubbing the axial stator cores positioned on two sides of the thrust disc, so that the thrust disc and the axial stator cores are prevented from being abraded, and the function of protecting the thrust disc and the axial stator cores is achieved.
Further, a sensor assembly is arranged inside one of the two axial stator cores. The sensor assembly is arranged in the axial stator core, so that the sensor assembly and the axial stator core are integrated, and the reduction of the whole axial size of the magnetic suspension bearing is facilitated.
Further, the sensor assembly comprises a sensor support and an axial sensor fixed on the sensor support. The sensor support is used for fixing the axial sensor, the axial sensor is used for detecting the axial position of the rotor, and the axial electromagnetic force can be adjusted according to the position condition of the rotor.
Further, a radial protection bearing is arranged in the accommodating groove, and the inner diameter of the radial protection bearing is aligned with the inner diameter of the axial bearing assembly. When the rotor is unstable in the radial direction, the radial protection bearing can prevent the rotor from contacting and rubbing the radial bearing assembly, the radial bearing assembly is prevented from being abraded, the radial bearing assembly is protected, and specifically, the inner diameter of the radial protection bearing is smaller than that of the radial stator core.
Further, the radial bearing assembly includes a radial stator core located inside the accommodation groove, and a radial winding disposed inside the radial stator core. The radial winding is used for generating magnetic force to enable the rotor to keep radial balance, and the magnitude of the radial electromagnetic force is adjusted according to the position condition of the rotor.
Further, the radial bearing assembly further comprises a radial sensor. The radial sensor is used for rotor radial position detection.
Further, the radial sensor is fixed on the sensor support. The radial sensor is fixed on the sensor support, so that the use of additional supports can be reduced, the number of internal structures can be reduced, the axial size of the magnetic suspension bearing is facilitated, the overall structure is optimized, the overall axial size of the whole machine is reduced, and the radial sensor is more conveniently applied to small-space occasions.
The invention has the beneficial effects that: the integrated magnetic suspension bearing comprises an axial bearing assembly and a radial bearing assembly, wherein the axial bearing assembly is provided with a containing groove along the axial direction, the radial bearing assembly is arranged in the containing groove and fixed with the axial bearing assembly, and the inner diameter of the axial bearing assembly is aligned with the inner diameter of the radial bearing assembly. The axial bearing assembly is axially provided with the accommodating groove, and the radial bearing assembly is fixed in the accommodating groove, so that the radial bearing and the axial bearing are integrated into a whole, the axial size of the magnetic suspension bearing is effectively reduced, the overall structure is optimized, the overall axial size of the whole machine is reduced, the whole machine can be more conveniently applied to small-space occasions, and meanwhile, the radial bearing and the axial bearing are not required to be respectively assembled when the whole machine is assembled, the assembly difficulty is reduced, and the assembly efficiency is improved; the coaxiality effect of the assembled complete machine is good, and the magnetic suspension bearing is favorable for controlling and adjusting the suspension precision of the rotor.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a cross-sectional view of an integrated magnetic suspension bearing according to the present invention.
Fig. 2 is a schematic view of the electromagnetic field direction of an integrated axial bearing assembly for a magnetic suspension bearing according to the present invention.
Fig. 3 is a schematic view of the electromagnetic field direction of the radial bearing assembly of an integrated magnetic suspension bearing of the present invention.
The figure includes:
the sensor comprises an axial bearing assembly 1, a radial bearing assembly 2, a containing groove 3, an axial stator core 4, an axial winding 5, a rotor 6, a thrust disc 7, an axial protection component 8, a sensor assembly 9, a sensor support 10, an axial sensor 11, a radial protection bearing 12, a radial stator core 13, a radial winding 14 and a radial sensor 15.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
An integrated magnetic suspension bearing of the present embodiment, as shown in fig. 1-3, includes an axial bearing assembly 1 and a radial bearing assembly 2, the axial bearing assembly 1 has a receiving groove 3 along an axial direction, the radial bearing assembly 2 is disposed in the receiving groove 3 and fixed with the axial bearing assembly 1, and an inner diameter of the axial bearing assembly 1 is aligned with an inner diameter of the radial bearing assembly 2. The axial bearing assembly 1 is axially provided with the accommodating groove 3, and the radial bearing assembly 2 is fixed in the accommodating groove 3, so that the radial bearing and the axial bearing are integrated into a whole, the axial size of the magnetic suspension bearing is effectively reduced, the overall structure is optimized, the overall axial size of the whole machine is reduced, the whole machine can be more conveniently applied to small-space occasions, and meanwhile, the radial bearing and the axial bearing are not required to be respectively assembled during the assembly of the whole machine, the assembly difficulty is reduced, and the assembly efficiency is improved; the coaxiality effect of the assembled complete machine is good, and the magnetic suspension bearing is favorable for controlling and adjusting the suspension precision of the rotor. Of course, the electromagnetic field direction for the axial bearing assembly identified in FIG. 2 and the electromagnetic field direction for the radial bearing assembly identified in FIG. 3 are just one of the cases listed for ease of understanding.
Axial bearing assembly 1 is including aligning and being two axial stator core 4 that the clearance set up, and set up respectively two axial winding 5 of the inside of axial stator core 4, holding tank 3 is seted up two on one of them of axial stator core 4. The gap between the two axial stator cores 4 is used for placing a thrust plate 7 fixed on the rotor 6, the axial winding 5 is used for generating magnetic force to enable the thrust plate 7 to keep axial balance, so that the rotor 6 is restrained in the axial direction, finally, the rotor 6 is suspended in the air in the axial direction, the accommodating groove 3 is formed in the axial stator cores 4, the radial bearing assembly 2 can be located in the axial stator cores 4, the radial bearing and the axial bearing are integrated, the axial size of the magnetic suspension bearing is effectively reduced, the overall structure is optimized, the overall axial size of the whole machine is reduced, the radial bearing and the axial bearing are more conveniently applied to small-space occasions, meanwhile, the radial bearing and the axial bearing are not required to be assembled respectively when the whole machine is assembled, and the assembling difficulty is.
The axial windings 5 are respectively located on opposite sides of a gap between the two axial stator cores 4 and are symmetrically arranged. The axial windings 5 are respectively positioned on the opposite sides of the gap between the two axial stator cores 4, so that the axial windings 5 can be closest to a thrust disk 7 fixed on the rotor 6, and the influence on the axial stability of the rotor caused by weakening the magnetic force generated by the axial windings 5 due to too long distance is avoided.
A sensor assembly 9 is disposed inside one of the two axial stator cores 4. The sensor assembly is arranged in the axial stator core 4, so that the sensor assembly and the axial stator core 4 are integrated, and the overall axial size of the magnetic suspension bearing is favorably reduced.
The sensor assembly 9 comprises a sensor support 10 and an axial sensor 11 fixed on the sensor support 10. The sensor support 10 is used for fixing the axial sensor 11, the axial sensor 11 is used for detecting the axial position of the rotor 6, the axial electromagnetic force is adjusted according to the position condition of the rotor 6, and the sensor support 10 is made of non-magnetic materials, such as aluminum alloy and other non-magnetic materials.
A radial protection bearing 12 is arranged in the accommodating groove 3, and the inner diameter of the radial protection bearing 12 is aligned with the inner diameter of the axial bearing assembly 1. When the rotor 6 is radially unstable, the radial protection bearing 12 can prevent the rotor 6 from contacting and rubbing the radial bearing assembly 2, so as to prevent the radial bearing assembly 2 from being worn, and the radial bearing assembly 2 is protected, specifically, the inner diameter of the radial protection bearing 12 is smaller than that of the radial stator core.
The radial bearing assembly 2 includes a radial stator core 13 located inside the housing groove 3, and a radial winding 14 disposed inside the radial stator core 12. The radial windings 14 are used to generate magnetic forces to keep the rotor 6 radially balanced.
The radial bearing assembly 2 further comprises a radial sensor 15. The radial sensor 15 is used for detecting the radial position of the rotor 6, and the magnitude of the radial electromagnetic force is adjusted according to the position condition of the rotor 6.
The radial sensor 15 is fixed to the sensor carrier 10. The radial sensor 15 is fixed on the sensor support 10, so that the use of additional supports can be reduced, the number of internal structures can be reduced, the axial size of the magnetic suspension bearing is facilitated, the overall structure is optimized, the overall axial size of the whole machine is reduced, and the radial sensor is more conveniently applied to small-space occasions.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. An integrated magnetic suspension bearing comprising an axial bearing assembly and a radial bearing assembly, characterized in that: the axial bearing assembly is provided with a containing groove along the axial direction, the radial bearing assembly is arranged in the containing groove and fixed with the axial bearing assembly, and the inner diameter of the axial bearing assembly is aligned with the inner diameter of the radial bearing assembly.
2. An integrated magnetic suspension bearing as claimed in claim 1, wherein: axial bearing subassembly is including aligning and being two axial stator core that the clearance set up, and set up respectively two axial winding of axial stator core's inside, the holding tank is seted up two on one of them of axial stator core.
3. An integrated magnetic suspension bearing as claimed in claim 2, wherein: the axial windings are respectively positioned on the opposite sides of the gap between the two axial stator cores and are symmetrically arranged.
4. An integrated magnetic suspension bearing as claimed in claim 2, wherein: and axial protection components are symmetrically arranged on the opposite sides of the gap between the two axial stator cores.
5. An integrated magnetic suspension bearing as claimed in claim 2, wherein: and a sensor assembly is arranged in one of the two axial stator cores.
6. An integrated magnetic suspension bearing as claimed in claim 5, wherein: the sensor assembly comprises a sensor support and an axial sensor fixed on the sensor support.
7. An integrated magnetic suspension bearing as claimed in claim 2, wherein: and a radial protection bearing is arranged in the accommodating groove, and the inner diameter of the radial protection bearing is aligned with the inner diameter of the axial stator assembly of the bearing.
8. An integrated magnetic suspension bearing as claimed in claim 1, wherein: the radial bearing assembly comprises a radial stator core positioned inside the accommodating groove and a radial winding arranged inside the radial stator core.
9. An integrated magnetic suspension bearing as claimed in claim 8, wherein: the radial bearing assembly also includes a radial sensor.
10. An integrated magnetic bearing as claimed in claims 6 and 9 wherein: the radial sensor is fixed on the sensor support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950393.5A CN110925306A (en) | 2019-10-08 | 2019-10-08 | Integrated magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910950393.5A CN110925306A (en) | 2019-10-08 | 2019-10-08 | Integrated magnetic suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110925306A true CN110925306A (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910950393.5A Pending CN110925306A (en) | 2019-10-08 | 2019-10-08 | Integrated magnetic suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110925306A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117588493A (en) * | 2024-01-19 | 2024-02-23 | 山东天瑞重工有限公司 | Radial-axial integrated magnetic suspension bearing and magnetic suspension motor for air compressor |
| CN117605761A (en) * | 2024-01-19 | 2024-02-27 | 山东天瑞重工有限公司 | Radial-axial integrated magnetic bearing and air compressor motor |
-
2019
- 2019-10-08 CN CN201910950393.5A patent/CN110925306A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117588493A (en) * | 2024-01-19 | 2024-02-23 | 山东天瑞重工有限公司 | Radial-axial integrated magnetic suspension bearing and magnetic suspension motor for air compressor |
| CN117605761A (en) * | 2024-01-19 | 2024-02-27 | 山东天瑞重工有限公司 | Radial-axial integrated magnetic bearing and air compressor motor |
| CN117588493B (en) * | 2024-01-19 | 2024-04-16 | 山东天瑞重工有限公司 | Radial-axial integrated magnetic suspension bearing and magnetic suspension motor for air compressor |
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