CN110233536B - Electromagnetic actuating mechanism and motor on high-speed rotating shaft system - Google Patents
Electromagnetic actuating mechanism and motor on high-speed rotating shaft system Download PDFInfo
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- CN110233536B CN110233536B CN201910509242.6A CN201910509242A CN110233536B CN 110233536 B CN110233536 B CN 110233536B CN 201910509242 A CN201910509242 A CN 201910509242A CN 110233536 B CN110233536 B CN 110233536B
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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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/02—Arrangements for equalising the load on a plurality of bearings or their elements
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0037—Special features of coaxial shafts, e.g. relative support thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses an electromagnetic actuating mechanism on a high-speed rotating shaft system, wherein the high-speed rotating shaft system is supported at two ends of a mandrel by adopting mechanical bearings, and the rotating speed of the mandrel is lower than the rated rotating speed of the mechanical bearings; the electromagnetic actuating mechanism comprises a sensor detection device and an electromagnetic actuating device which are arranged on the mandrel, wherein the sensor detection device is used for detecting the dynamic and static load information of the mandrel and transmitting the dynamic and static load information to a control system for processing; the electromagnetic executing device is used for applying a force which is offset with the vibration of the mandrel to the mandrel according to a result obtained by processing the dynamic and static load information by the control system so as to enable the actual bearing load on the mechanical bearing to approach zero all the time, greatly improve the bearing capacity and the service life of the mechanical bearing, and enable the mechanical bearing to be used in equipment with larger bearing requirements at smaller and higher speed. The invention also provides a motor.
Description
Technical Field
The invention relates to the technical field of high-speed rotating machinery, in particular to an electromagnetic actuating mechanism and a motor on a high-speed rotating shaft system.
Background
The smaller the size of the mechanical bearing, the higher the rotating speed and the smaller the load. Small size, high rotation speed, improved bearing capacity and prolonged service life
The factors influencing the service life of the mechanical bearing are mainly load and rotating speed, wherein the load comprises dynamic and static loads. In order to reduce the influence of dynamic load or impact load on the service life of the bearing, a damping buffer structure is usually added to the stator of the bearing, for example, a structure using a tolerance ring or a damping rubber ring is added outside the bearing, and such a structural design can effectively improve the service life of the bearing. But due to the characteristics of mechanical bearings: the higher the rotating speed of the mechanical bearing is, the smaller the size of the mechanical bearing is, and the smaller the load borne by the mechanical bearing is, so that the problems of narrow application range, limited bearing capacity and limited service life improvement of the mechanical bearing still exist.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an electromagnetic actuator on a high-speed rotating shaft system, which can effectively improve the bearing capacity and the service life of a mechanical bearing on the high-speed rotating shaft system.
According to the electromagnetic actuating mechanism on the high-speed rotating shafting, the high-speed rotating shafting is supported at two ends of a mandrel by adopting mechanical bearings, and the rotating speed of the mandrel is lower than the rated rotating speed of the mechanical bearings; the electromagnetic actuating mechanism comprises a sensor detection device and an electromagnetic actuating device which are arranged on the mandrel, wherein the sensor detection device is used for detecting the dynamic and static load information of the mandrel and transmitting the dynamic and static load information to a control system for processing; and the electromagnetic executing device is used for applying a force which is offset with the vibration of the mandrel to the mandrel according to a result obtained by processing the dynamic and static load information by the control system so as to enable the actual bearing load on the mechanical bearing to approach zero all the time.
According to the electromagnetic actuating mechanism on the high-speed rotating shaft system, the mechanical bearing is used as a main bearing of a mandrel of the high-speed rotating shaft system, the sensor detection device and the electromagnetic actuating device which are used as the electromagnetic actuating mechanism are installed on the mandrel, the sensor detection device can be used for detecting dynamic and static load information of the mandrel, the control system processes the dynamic and static load information, the electromagnetic actuating device applies force which is offset with the vibration of the mandrel to the mandrel according to a processing result, and the main dynamic and static load on the mechanical bearing is effectively removed, so that the actual bearing on the mechanical bearing is always close to zero, the bearing capacity and the service life of the mechanical bearing are greatly improved, and the mechanical bearing which is smaller and higher in speed can be used in equipment with larger bearing requirements.
According to an embodiment of the first invention, the dynamic and static load information includes acceleration, vibration and offset of the mandrel.
According to an embodiment of the first aspect of the present invention, the sensor detection device includes a sensor and a sensor measured end, the sensor measured end is fixedly sleeved on the outer circumferential surface of the mandrel, and the sensor is located radially outside the sensor measured end and is not in contact with the sensor measured end; the sensor obtains the dynamic and static load information of the mandrel by detecting the detected end of the sensor, and transmits the dynamic and static load information to the control system for processing.
According to a further embodiment of the first aspect of the present invention, the sensor is a non-contact sensor, the non-contact sensor being an inductive sensor, a capacitive sensor or a light-sensitive sensor.
According to a further embodiment of the first aspect of the present invention, the electromagnetic actuator comprises a radial electromagnetic actuator, and the radial electromagnetic actuator applies a force to the mandrel that counteracts the radial vibration of the mandrel according to a processing result of the control system.
According to a still further embodiment of the first aspect of the present invention, the radial electromagnetic actuator includes a radial electromagnetic actuator and an electromagnetic actuated end, the electromagnetic actuated end is fixed on the outer circumferential surface of the mandrel in a sleeved manner, and the radial electromagnetic actuator is located radially outside the electromagnetic actuated end and is not in contact with the electromagnetic actuated end; and the radial electromagnetic actuator exerts a force which is counteracted with the radial vibration of the mandrel on the mandrel by acting on the electromagnetic executed end according to the processing result of the control system.
According to a still further embodiment of the first aspect of the present invention, the electromagnetic actuator further includes a magnetic isolation outer collar, a magnetic isolation inner collar, a first silicon steel sheet and a second silicon steel sheet, the sensor is mounted on the magnetic isolation inner collar through the first silicon steel sheet and the radial electromagnetic actuator through the second silicon steel sheet, and the magnetic isolation inner collar is coaxially nested in the magnetic isolation outer collar.
According to a still further embodiment of the first aspect of the present invention, there are two of the sensor detecting devices and two of the radial electromagnetic actuators, respectively, and the two sensor detecting devices and the two of the radial electromagnetic actuators are disposed at two ends of the mandrel, respectively, and the sensor detecting device and the radial electromagnetic actuator at each end are close to each other in the axial direction.
According to a still further embodiment of the first aspect of the present invention, the electromagnetic actuator further comprises an axial electromagnetic actuator, and the axial electromagnetic actuator applies a force to the mandrel that counteracts axial vibration of the mandrel according to a processing result of the control system.
According to a still further embodiment of the first aspect of the present invention, the axial electromagnetic actuator includes a thrust disk and two axial electromagnetic actuators, the thrust disk is fixedly sleeved on the outer circumferential surface of the mandrel, and the two axial electromagnetic actuators are respectively located at two axial sides of the thrust disk and are not in contact with the thrust disk; and the two axial electromagnetic actuators apply force which is offset with the axial vibration of the mandrel to the mandrel by acting on the thrust disc according to the processing result of the control system.
According to a still further embodiment of the first aspect of the present invention, the axial electromagnetic actuator includes a magnet ring, a retaining ring, and an electromagnetic coil, wherein a side of the magnet ring facing the thrust disk is provided with a groove ring, the electromagnetic coil is circumferentially disposed in the groove ring, and the retaining ring is retained at a groove opening of the groove ring and keeps a distance between an inner periphery of the retaining ring and an inner periphery of the groove ring to form an open ring.
According to an embodiment of the first aspect of the invention, the mechanical bearing comprises a stator and a resilient element outside the stator.
The invention also provides a motor.
A motor according to a second embodiment of the present invention includes:
according to the electromagnetic actuating mechanism for improving the bearing capacity and prolonging the service life of the mechanical bearing, which is disclosed by any embodiment of the first aspect of the invention;
the motor rotor is fixed on the mandrel;
the motor stator and the motor rotor are coaxially arranged and are positioned on the radial outer side of the motor rotor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic axial sectional structural diagram of a motor according to an embodiment of the second aspect of the present invention, in which a schematic structural diagram of an electromagnetic actuator on a high-speed rotating shafting according to an embodiment of the first aspect of the present invention is shown.
Reference numerals:
Mechanical bearing 1 mandrel 2
Radial electromagnetic actuator 41 and radial electromagnetic actuator 411 electromagnetic actuated end 412
Axial electromagnetic actuator 42 axial electromagnetic actuator 421 magnet ring 4211 retainer ring 4212
The magnetism isolating outer sleeve ring 5 magnetism isolating inner sleeve ring 6, the first silicon steel sheet 7 and the second silicon steel sheet 8
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
An electromagnetic actuator on a high-speed rotating shaft system according to an embodiment of the present invention is described below with reference to fig. 1.
As shown in fig. 1, according to the electromagnetic actuator on the high-speed rotating shafting according to the embodiment of the first aspect of the present invention, the high-speed rotating shafting is supported at both ends of the mandrel 2 by using the mechanical bearings 1, and the rotating speed of the mandrel 2 is lower than the rated rotating speed of the mechanical bearings 1; the electromagnetic actuating mechanism comprises a sensor detection device 3 and an electromagnetic actuating device 4 which are arranged on the mandrel 2, wherein the sensor detection device 3 is used for detecting the dynamic and static load information of the mandrel 2 and transmitting the dynamic and static load information to the control system for processing; the electromagnetic executing device 4 is used for applying a force which is offset with the vibration of the mandrel 2 to the mandrel 2 according to a result obtained by processing the dynamic and static load information by the control system so as to enable the actual load on the mechanical bearing 1 to approach zero all the time.
Specifically, the high-speed rotating shaft system adopts a mechanical bearing 1 to support at two ends of a mandrel 2, and the rotating speed of the mandrel 2 is lower than the rated rotating speed of the mechanical bearing 1. It can be understood that the mechanical bearings 1 are adopted at two ends of the mandrel 2 to support the mandrel 2, the mechanical bearings 1 are installed between the mandrel 2 and the main support without air gaps, the positioning accuracy of the mandrel 2 is high, and the problem of falling of the air gaps does not exist. Since the high-speed rotating shaft system has a high rotating speed, the mechanical bearing 1 of the high-speed rotating shaft system is correspondingly small in size. In order to ensure the normal operation of the high-speed rotating shaft system, the rotating speed of the mandrel 2 is required to be lower than the rated rotating speed of the mechanical bearing 1.
The electromagnetic actuating mechanism comprises a sensor detection device 3 and an electromagnetic actuating device 4 which are arranged on the mandrel 2, wherein the sensor detection device 3 is used for detecting the dynamic and static load information of the mandrel 2 and transmitting the dynamic and static load information to the control system for processing; the electromagnetic executing device 4 is used for applying a force which is offset with the vibration of the mandrel 2 to the mandrel 2 according to a result obtained by processing the dynamic and static load information by the control system so as to enable the actual load on the mechanical bearing 1 to approach zero all the time. It can be understood that the sensor detection device 3 and the electromagnetic execution device 4 are necessary components of the electromagnetic execution mechanism, the sensor detection device 3 and the electromagnetic execution device 4 are installed on the mandrel 2, the sensor detection device 3 can detect dynamic and static load information of the mandrel 2, such as acceleration, vibration and offset conditions of the mandrel 2, the dynamic and static load information can be transmitted to the control system in a signal form for processing, the control system processes the dynamic and static load information and feeds back a processing result to the electromagnetic execution device 4, the electromagnetic execution device 4 applies a force which is offset with the vibration of the mandrel 2 to the mandrel 2 according to the processing result, and effectively unloads main dynamic and static loads on the mechanical bearing 1, so that the actual bearing on the mechanical bearing 1 is always close to zero, and the bearing capacity and the service life of the mechanical bearing 1 are greatly improved. That is to say, the electromagnetic actuator can assist and promote the bearing capacity and the life of the mechanical bearing 1 of the high-speed rotating shafting, can use the mechanical bearing 1 of smaller higher speed in the equipment of bigger bearing demand.
According to the electromagnetic actuating mechanism on the high-speed rotating shaft system of the embodiment of the first aspect of the invention, the mechanical bearing 1 is used as a main bearing of the mandrel 2 of the high-speed rotating shaft system, the sensor detection device 3 and the electromagnetic actuating device 4 which are used as the electromagnetic actuating mechanism are arranged on the mandrel 2, the dynamic and static load information of the mandrel 2 can be detected by using the sensor detection device 3, the dynamic and static load information is processed by the control system, the electromagnetic actuating device 4 exerts a force which is offset with the vibration of the mandrel 2 on the mandrel 2 according to a processing result, and the main dynamic and static loads on the mechanical bearing 1 are effectively removed, so that the actual bearing on the mechanical bearing 1 is always close to zero, the bearing capacity and the service life of the mechanical bearing 1 are greatly improved, and the smaller and higher-speed mechanical bearing 1 can be used in equipment with larger bearing requirements.
According to one embodiment of the first aspect of the invention, the dynamic and static load information comprises acceleration, vibration and deflection of the mandrel 2. Since the acceleration of the mandrel 2 and the vibration and the offset of the mandrel 2 directly affect the bearing capacity of the mechanical bearing 1, the sensor 31 is used for detecting the acceleration, the vibration and the offset of the mandrel 2 to be used as a feedback control reference signal, which is beneficial for the electromagnetic executing device 4 to effectively unload the dynamic and static loads of the mechanical bearing 1.
According to an embodiment of the first aspect of the present invention, the sensor detection device 3 includes a sensor 31 and a sensor measured end 32, the sensor measured end 32 is fixedly sleeved on the outer circumferential surface of the mandrel 2, the sensor 31 is located radially outside the sensor measured end 32 and is not in contact with the sensor measured end 32; the sensor 31 detects the detected end 32 of the sensor to obtain the dynamic and static load information of the mandrel 2, and transmits the dynamic and static load information to the control system for processing. It can be understood that the sensor measured end 32 is fixedly sleeved on the outer peripheral surface of the mandrel 2, and the sensor 31 is located at the radial outer side of the sensor measured end 32 and is not in contact with the sensor measured end 32, so that the sensor 31 and the sensor measured end 32 are prevented from being rubbed against each other.
According to a further embodiment of the first aspect of the present invention, the sensor 31 is a non-contact sensor 31. For example, the non-contact sensor 31 may be an inductive sensor 31, a capacitive sensor 31 or a light-sensitive sensor 31, so that the sensor 31 can perform non-contact detection on the detected end 32 of the sensor, and avoid rubbing between the two.
According to a further embodiment of the first aspect of the present invention, the electromagnetic actuator 4 comprises a radial electromagnetic actuator 41, and the radial electromagnetic actuator 41 exerts a force on the mandrel 2 that counteracts the radial vibration of the mandrel 2 according to the processing result of the control system. Therefore, the radial load of the mandrel 2 can be effectively unloaded, and the bearing capacity and the service life of the mechanical bearing 1 are favorably improved.
According to a still further embodiment of the first aspect of the present invention, the radial electromagnetic actuator 41 includes a radial electromagnetic actuator 411 and an electromagnetic executed end 412, the electromagnetic executed end 412 is fixedly sleeved on the outer circumferential surface of the mandrel 2, the radial electromagnetic actuator 411 is located radially outside the electromagnetic executed end 412 and is not in contact with the electromagnetic executed end 412; the radial electromagnetic actuator 411 applies a force that cancels the radial vibration of the mandrel 2 to the mandrel 2 by acting on the electromagnetically executed end 412 according to the processing result of the control system. Therefore, the radial load of the mandrel 2 can be effectively unloaded, and the bearing capacity and the service life of the mechanical bearing 1 are favorably improved. In addition, the radial electromagnetic actuator 411 and the electromagnetic actuated end 412 are not in contact, so that the two can be prevented from being rubbed.
According to a further embodiment of the first aspect of the present invention, the electromagnetic actuator further includes a magnetic isolation outer collar 5, a magnetic isolation inner collar 6, a first silicon steel sheet 7 and a second silicon steel sheet 8, the sensor 31 is respectively mounted on the magnetic isolation inner collar 6 through the first silicon steel sheet 7 and the radial electromagnetic actuator 411 through the second silicon steel sheet 8, and the magnetic isolation inner collar 6 is coaxially nested in the magnetic isolation outer collar 5. It can be understood that, the sensor 31 is installed on the magnetic isolation inner collar 6 through the first silicon steel sheet 7, and the radial electromagnetic actuator 411 is installed on the magnetic isolation inner collar 6 through the second silicon steel sheet 8, so that the electromagnetic eddy current loss of the radial electromagnetic actuator 411 can be avoided, and meanwhile, the installation is convenient. The magnetic-isolating inner sleeve ring 6 is coaxially nested in the magnetic-isolating outer sleeve ring 5, and the sensor 31 and the radial electromagnetic actuator can be fixed on an equipment shell applied to a high-speed rotating shaft system by the magnetic-isolating outer sleeve ring 5. In addition, the magnetic-isolating outer sleeve ring 5 and the magnetic-isolating inner sleeve ring 6 can also play a magnetic-isolating role.
According to a still further embodiment of the first aspect of the present invention, there are two sensor detecting devices 3 and two radial electromagnetic actuators 41, respectively, and the two sensor detecting devices 3 and the two radial electromagnetic actuators 41 are disposed at two ends of the mandrel 2, respectively, and the sensor detecting devices 3 and the radial electromagnetic actuators 41 at each end are close to each other in the axial direction. It can be understood that, two sensor detection devices 3 and two radial electromagnetic actuators 41 are respectively disposed at two ends of the mandrel 2, so that the dynamic and static load information of the mandrel 2 detected by the sensor detection devices 3 is more accurate and reliable, and meanwhile, the radial electromagnetic actuators 41 can more effectively unload the dynamic and static loads of the mechanical bearings 1 at two ends of the mandrel 2. The sensor detection device 3 and the radial electromagnetic actuator 41 at each end are close to each other in the axial direction, the structure is compact, and the installation and the fixation are convenient and simple.
According to a still further embodiment of the first aspect of the present invention, the electromagnetic actuator 4 further comprises an axial electromagnetic actuator 42, and the axial electromagnetic actuator 42 applies a force to the mandrel 2 that counteracts axial vibration of the mandrel 2 according to a processing result of the control system. Therefore, the axial load of the mandrel 2 can be effectively unloaded, and the bearing capacity and the service life of the mechanical bearing 1 are favorably improved.
According to a still further embodiment of the first aspect of the present invention, the axial electromagnetic actuator 42 includes a thrust disk 422 and two axial electromagnetic actuators 421, the thrust disk 422 is fixedly sleeved on the outer circumferential surface of the mandrel 2, and the two axial electromagnetic actuators 421 are respectively located at two axial sides of the thrust disk 422 and are not in contact with the thrust disk 422; the two axial electromagnetic actuators 421 apply a force to the spindle 2, which counteracts the axial vibration of the spindle 2, by acting on the thrust disk 422 according to the processing result of the control system. Therefore, the axial load of the mandrel 2 can be effectively unloaded, and the bearing capacity and the service life of the mechanical bearing 1 are favorably improved. In addition, the axial electromagnetic actuator 421 is not in contact with the thrust disk 422, so that the axial electromagnetic actuator can be prevented from being rubbed with the thrust disk 422.
According to a still further embodiment of the first aspect of the present invention, the axial electromagnetic actuator 421 includes a magnet ring 4211, a retaining ring 4212 and an electromagnetic coil 4213, wherein a side of the magnet ring 4211 facing the thrust disk 422 is provided with a grooved ring, the electromagnetic coil 4213 is circumferentially arranged in the grooved ring, and the retaining ring 4212 is arranged at a groove opening of the grooved ring and keeps a distance between an inner periphery of the retaining ring 4212 and an inner periphery of the grooved ring to form an open ring 4214. Therefore, the electromagnetic coil 4213 is easy and reliable to mount, and the magnetic induction intensity of the axial electromagnetic actuator 421 can be locally enhanced by providing the split ring 4214.
According to an embodiment of the first aspect of the present invention, an elastic element is arranged outside the stator of the mechanical bearing 1, and the elastic element may be a tolerance ring, a damping rubber ring, or the like, and can allow a high-speed rotating shaft system to have a small displacement on the elastic element, which is beneficial to improving the bearing capacity and the service life of the mechanical bearing 1.
As shown in fig. 1, the second aspect of the present invention also provides an electric machine 1000.
As shown in fig. 1, the motor 1000 according to the embodiment of the second aspect of the present invention includes the electromagnetic actuator of the high-speed rotating shafting according to any one of the embodiments of the first aspect of the present invention, a motor rotor 9, and a motor stator 10, wherein the motor rotor 9 is fixed on the spindle 2, and the motor stator 10 is coaxially arranged with the motor rotor 9 and is located at the radial outer side of the motor rotor 9.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An electromagnetic actuating mechanism on a high-speed rotating shaft system is characterized in that the high-speed rotating shaft system is supported at two ends of a mandrel by adopting mechanical bearings, and the rotating speed of the mandrel is lower than the rated rotating speed of the mechanical bearings; the electromagnetic actuating mechanism comprises a sensor detection device and an electromagnetic actuating device which are arranged on the mandrel, wherein the sensor detection device is used for detecting the dynamic and static load information of the mandrel and transmitting the dynamic and static load information to a control system for processing; the electromagnetic executing device is used for applying a force which is offset with the vibration of the mandrel to the mandrel according to a result obtained by processing the dynamic and static load information by the control system so as to enable the actual bearing load on the mechanical bearing to approach zero all the time;
the dynamic and static load information comprises the acceleration, vibration and offset of the mandrel;
the electromagnetic executing device comprises a radial electromagnetic executing device, and the radial electromagnetic executing device exerts a force which is offset with the radial vibration of the mandrel on the mandrel according to a processing result of the control system;
the number of the sensor detection devices and the number of the radial electromagnetic execution devices are two, the two sensor detection devices and the two radial electromagnetic execution devices are arranged at two ends of the mandrel respectively, and the sensor detection device and the radial electromagnetic execution device at each end are close to each other in the axial direction;
the electromagnetic execution device further comprises an axial electromagnetic execution device, and the axial electromagnetic execution device applies force which is offset with the axial vibration of the mandrel to the mandrel according to a processing result of the control system.
2. The electromagnetic actuator on the high-speed rotating shaft system according to claim 1, wherein the sensor detection device comprises a sensor and a sensor measured end, the sensor measured end is fixedly sleeved on the outer peripheral surface of the mandrel, and the sensor is located on the radial outer side of the sensor measured end and is not in contact with the sensor measured end; the sensor obtains the dynamic and static load information of the mandrel by detecting the detected end of the sensor, and transmits the dynamic and static load information to the control system for processing.
3. The electromagnetic actuator on the high-speed rotating shafting as claimed in claim 2, wherein said sensor is a non-contact sensor, and said non-contact sensor is an inductive sensor, a capacitive sensor or a light-sensitive sensor.
4. The electromagnetic actuator on the high-speed rotating shafting of claim 1, wherein the radial electromagnetic actuator comprises a radial electromagnetic actuator and an electromagnetic actuated end, the electromagnetic actuated end is fixedly sleeved on the outer peripheral surface of the mandrel, and the radial electromagnetic actuator is located radially outside the electromagnetic actuated end and is not in contact with the electromagnetic actuated end; and the radial electromagnetic actuator exerts a force which is counteracted with the radial vibration of the mandrel on the mandrel by acting on the electromagnetic executed end according to the processing result of the control system.
5. The electromagnetic actuator on the high-speed rotating shaft system according to claim 4, further comprising a magnetic isolation outer collar, a magnetic isolation inner collar, a first silicon steel sheet and a second silicon steel sheet, wherein the sensor is mounted on the magnetic isolation inner collar through the first silicon steel sheet and the radial electromagnetic actuator through the second silicon steel sheet, and the magnetic isolation inner collar is coaxially nested in the magnetic isolation outer collar.
6. The electromagnetic actuator on the high-speed rotating shafting of claim 1, wherein the axial electromagnetic actuator comprises a thrust disk and two axial electromagnetic actuators, the thrust disk is fixedly sleeved on the outer peripheral surface of the mandrel, and the two axial electromagnetic actuators are respectively located on two axial sides of the thrust disk and are not in contact with the thrust disk; and the two axial electromagnetic actuators apply force which is offset with the axial vibration of the mandrel to the mandrel by acting on the thrust disc according to the processing result of the control system.
7. The electromagnetic actuator on the high-speed rotating shafting of claim 6, wherein the axial electromagnetic actuator comprises a magnet ring, a retaining ring and an electromagnetic coil, a groove ring is arranged on one side surface of the magnet ring facing the thrust disk, the electromagnetic coil is arranged in the groove ring in a surrounding mode, and the retaining ring is arranged at the groove opening of the groove ring in a retaining mode and enables a space to be reserved between the inner periphery of the retaining ring and the inner periphery of the groove ring to form an open ring.
8. The electromagnetic actuator on the high-speed rotating shaft system as claimed in claim 1, wherein an elastic element is arranged outside a stator of the mechanical bearing.
9. An electric machine, comprising:
the electromagnetic actuator on the high-speed rotating shaft system according to any one of claims 1 to 8;
the motor rotor is fixed on the mandrel;
the motor stator and the motor rotor are coaxially arranged and are positioned on the radial outer side of the motor rotor.
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| CN201910509242.6A CN110233536B (en) | 2019-06-13 | 2019-06-13 | Electromagnetic actuating mechanism and motor on high-speed rotating shaft system |
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| CN201910509242.6A CN110233536B (en) | 2019-06-13 | 2019-06-13 | Electromagnetic actuating mechanism and motor on high-speed rotating shaft system |
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| CN111266912B (en) * | 2020-03-31 | 2021-05-28 | 珠海格力智能装备有限公司 | Damping device and numerical control machine tool with same |
| WO2022222563A1 (en) * | 2021-04-19 | 2022-10-27 | 青岛海尔生物医疗科技有限公司 | Centrifuge |
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| FR2630541B1 (en) * | 1988-04-22 | 1993-01-22 | Mecanique Magnetique Sa | INDUCTIVE SENSOR FOR RADIAL MAGNETIC BEARING |
| JP3267649B2 (en) * | 1991-11-05 | 2002-03-18 | 光洋精工株式会社 | Bearing device |
| JP2011520410A (en) * | 2008-04-18 | 2011-07-14 | シンクロニー，インコーポレイテッド | Magnetic thrust bearings using integrated electronics. |
| CN107769622B (en) * | 2017-11-30 | 2019-05-17 | 北京理工大学 | A kind of axial magnetic formula motor |
| CN108377055A (en) * | 2018-03-30 | 2018-08-07 | 苏州容浦机电科技有限公司 | A kind of novel magnetically levitated switch reluctance servo motor |
| CN109763994A (en) * | 2019-02-21 | 2019-05-17 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and magnetic suspension centrifugal compressor, air conditioner |
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2019
- 2019-06-13 CN CN201910509242.6A patent/CN110233536B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 大卸载力铠装永磁轴承设计分析;汪勇等;《机械科学与技术》;20150630;第34卷(第6期);第858-862页 * |
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| CN110233536A (en) | 2019-09-13 |
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