CN116566162A - Magnetic coupler with adjustable magnetic force of many dishes - Google Patents
Magnetic coupler with adjustable magnetic force of many dishes Download PDFInfo
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- CN116566162A CN116566162A CN202310601089.6A CN202310601089A CN116566162A CN 116566162 A CN116566162 A CN 116566162A CN 202310601089 A CN202310601089 A CN 202310601089A CN 116566162 A CN116566162 A CN 116566162A
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- 239000004020 conductor Substances 0.000 claims abstract description 113
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 85
- 230000033228 biological regulation Effects 0.000 claims abstract description 52
- 229910052742 iron Inorganic materials 0.000 claims abstract description 42
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 230000005389 magnetism Effects 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 5
- 241000555745 Sciuridae Species 0.000 claims description 3
- 210000003781 tooth socket Anatomy 0.000 claims 2
- 230000008878 coupling Effects 0.000 description 18
- 238000010168 coupling process Methods 0.000 description 18
- 238000005859 coupling reaction Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 13
- 230000006698 induction Effects 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000009467 reduction Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000009351 contact transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention discloses a magnetic coupler with adjustable multi-disk magnetism, which comprises: an input shaft (1), a connecting shaft bracket (2), a stepping motor (7) and an output shaft (15); the output shaft (15) is coaxially arranged with the input shaft (1) and the connecting shaft bracket (2); the conductor rotor disk comprises a conductor rotor yoke iron disk (8) and a conductor copper ring (10) arranged on the conductor rotor yoke iron disk; the stepping motor (7) is arranged on the connecting shaft bracket (2) by a motor fastener (6) and drives the pinion (5) to rotate; all the permanent magnet rotor disks are sequentially connected through a connecting shaft bracket (2); the structure comprises a plurality of groups of composite discs; the invention does not need a complex speed regulation structure, has simple and flexible structure, is easy to realize and has wide application occasions.
Description
Technical Field
The invention belongs to the field of mechanical transmission, relates to a transmission device for realizing non-contact transmission of force or torque through magnetic coupling, and in particular relates to a multi-disk magnetic adjustable magnetic coupler.
Background
In recent years, along with the progress of research on high-performance rare earth permanent magnetic materials, the rapid development of novel bearing materials and electronic and control technologies, magnetic coupling transmission devices are increasingly widely researched and applied. The magnetic coupling transmission device has the advantages of overload protection, energy conservation, environmental protection, vibration reduction, antifriction, noise reduction and the like, so that the magnetic coupling transmission device is widely applied to industries such as petrochemical industry, thermal power, mining industry, ships and warships and the like. Currently, simplifying the structure of a magnetically coupled transmission device and improving the output of power and torque thereof becomes an important research direction.
Disclosure of Invention
The invention aims to simplify the structure of a magnetic coupling transmission device and improve the output of power and torque of the magnetic coupling transmission device, and provides a multi-disc magnetic adjustable magnetic coupler. The invention adopts the working principle that the speed regulation disc is made of soft magnetic materials with high magnetic permeability, and according to the electromagnetic induction principle, the magnetic flux on a conductor copper ring on a conductor rotor disc is regulated by changing the area of a through hole of the speed regulation disc, which is opposite to a permanent magnet on the permanent magnet rotor disc, so that the magnitude of annular induction current is regulated, and the change of the magnitude of the induction current directly leads to the change of an induction magnetic field, so that the output rotating speed and torque of the conductor rotor disc are regulated. The magnetic coupler adopts a plurality of groups of composite disc structures, and when the magnetic coupler works, axial movement is not required between the permanent magnet rotor disc and the conductor rotor disc, so that the overall axial size of the structure can be effectively reduced; on the premise of unchanged power and torque output, the number of composite disc groups can be reduced by increasing the number of rows of permanent magnets on the permanent magnet yoke iron disc and conductor copper rings on the conductor yoke iron disc along the radial direction, so that the invention is suitable for occasions with larger radial dimension and limited axial dimension. On the contrary, on the premise of unchanged power and torque output, the number of the composite disc groups is increased, and the number of rows of permanent magnets on the permanent magnet yoke iron disc and conductor copper rings on the conductor yoke iron disc along the radial direction is reduced, so that the purpose of reducing the radial dimension of the structure is achieved, and the invention is suitable for occasions with larger axial dimension but limited radial dimension, therefore, the invention has flexible structure and wide application occasions.
The technical scheme adopted by the invention is as follows:
a multi-disk magnetically adjustable magnetic coupler comprising: an input shaft (1), a connecting shaft bracket (2), a stepping motor (7) and an output shaft (15); the output shaft (15) is coaxially arranged with the input shaft (1) and the connecting shaft bracket (2);
the conductor rotor disk comprises a conductor rotor yoke iron disk (8) and a conductor copper ring (10) arranged on the conductor rotor yoke iron disk;
the stepping motor (7) is arranged on the connecting shaft bracket (2) by a motor fastener (6) and drives the pinion (5) to rotate; all the permanent magnet rotor disks are sequentially connected through a connecting shaft bracket (2);
the structure comprises a plurality of groups of composite discs, wherein each composite disc comprises a speed guiding disc (16), a permanent magnet rotor disc, a conductor rotor disc and a needle bearing (11);
the permanent magnet rotor disk comprises a permanent magnet yoke iron disk (4) and a tile-shaped permanent magnet (3) arranged in a groove of the permanent magnet yoke iron disk;
a plurality of rows of grooves corresponding to the tile-shaped permanent magnets in shape are formed in the permanent magnet yoke iron disc (4) along the radial direction, and the tile-shaped permanent magnets are sequentially arranged in the grooves at intervals in a circulating way according to N poles and S poles; the conductor rotor disk consists of a conductor copper ring (10) and a conductor rotor yoke iron disk (18): an annular groove corresponding to a conductor is formed in a conductor rotor yoke iron disc (18), a conductor copper ring (10) is embedded into the annular groove of the conductor yoke iron disc, and the conductor yoke iron disc and the conductor copper ring are fixed through a fastener;
the end surfaces of the inner ring and the outer ring of the needle bearing (11) are respectively connected and fastened with the permanent magnet rotor disk and the speed regulation disk (16) by bolts, and the permanent magnet rotor disk and the speed regulation disk can only rotate relatively.
Further, the edge of the permanent magnet rotor disc is provided with an axial groove and a threaded hole, the groove is clamped in the outer edge convex groove of the connecting shaft frame (2), and meanwhile, the permanent magnet rotor disc and the connecting shaft frame (2) are connected and fastened into a whole through bolts.
Further, conductor rotor plates in two adjacent groups of composite plates are respectively fixed on two end faces of the shaft sleeve (12) by bolts, and the shaft sleeve (12) is fixed on the output shaft (15) by bolts; the diameter of the shaft sleeve (12) is smaller than the aperture of the permanent magnet rotor disc and the aperture of the speed regulation disc (16);
the shaft sleeve (12) passes through the centers of the permanent magnet rotor disc and the speed regulation disc (16) and is coaxially arranged with the two discs;
the conductor rotor disc is of a squirrel cage structure, and a plurality of fan-shaped through grooves are formed in the slotted copper disc (17);
the conductor rotor yoke iron disc (18) is provided with a convex tooth slot yoke iron (19), and the tooth slot yoke iron (19) is embedded with the fan-shaped through slot.
Further, the middle part and the end part of the connecting shaft bracket (2) are respectively provided with a baffle plate (13); a deep groove ball bearing (14) is arranged on the partition plate (13);
the output shaft (15) respectively passes through the middle part and the end part of the partition plate (13) and is matched with a deep groove ball bearing (14) on the partition plate (13), and the outer ring of the deep groove ball bearing (14) is fixed on the partition plate (13) by using screws;
the edge of the baffle plate (13) is provided with an axial groove and a threaded hole, the groove is clamped in the outer edge convex groove of the connecting shaft frame (2), and the baffle plate (13) and the connecting shaft frame (2) are connected and fastened into a whole through bolts.
Further, the stepping motor (7) is fixed on the connecting shaft frame (2) by a motor fastener (6) through a screw, and a pinion (5) is arranged on the shaft of the stepping motor (7);
the pinion (5) is meshed with gear teeth on the outer edge of the speed regulation disc (16).
Further, the conductor copper ring (10) is annular, and the conductor rotor yoke iron plate (18) and the conductor are fixed by a fastener.
Further, the permanent magnets (3) on the permanent magnet yoke iron plate (4) can be arranged into a single row or a plurality of rows along the radial direction according to actual needs, and the permanent magnets (3) in each row are alternately arranged by adopting N, S poles.
Further, the speed regulation disc (16) is made of a soft magnetic material with high magnetic conductivity, and through holes which are in one-to-one correspondence with the tile-shaped permanent magnets on the permanent magnet yoke iron disc (4) are arranged on the speed regulation disc (16); the outer edge of the speed regulation disc (16) is provided with gear teeth for transmission.
Further, the number of the composite disc groups may be set to a single-disc or multi-disc structure according to actual needs. Furthermore, the speed regulation disc (16) is made of soft magnetic materials with high magnetic permeability, and the change regulation of the output rotating speed and torque of the conductor rotor disc is realized by changing the area of the through hole of the speed regulation disc (16) opposite to the permanent magnet (3) so as to regulate the magnetic flux on the conductor copper ring (10)
The invention has the beneficial effects that:
(1) The invention can realize the contactless transmission of torque between the permanent magnet rotor disk and the conductor rotor disk based on the electromagnetic induction principle, and has the advantages of overload protection, energy conservation, environmental protection, vibration reduction, friction reduction, noise reduction and the like. The invention relates to a speed-adjustable magnetic coupler, which is different from other speed-adjustable magnetic couplers, and the speed and torque of the other magnetic couplers are adjusted by adjusting the length of an air gap between a conductor rotor disc and a permanent magnet rotor disc through axial movement. The invention does not need a complex speed regulation structure, has simple and flexible structure, is easy to realize and is suitable for wide application occasions.
(2) The magnetic coupler adopts a multi-group multi-disc type structure, the number of the composite disc groups can be increased or reduced according to the use requirement, the speed regulation and high-power and high-torque output of the magnetic coupler are realized, and the structure is flexible.
(3) The magnetic coupler adopts a multi-group multi-disc structure, and the number of rows of permanent magnets on the permanent magnet yoke iron disc and conductor copper rings on the conductor yoke iron disc on each group of composite discs along the radial direction can be increased or reduced according to the use requirement.
(4) The magnetic coupler adopts a multi-group multi-disc structure, and axial movement is not required between the permanent magnet rotor disc and the conductor rotor disc, so that the axial size is effectively reduced; on the premise of unchanged power and torque output, the number of composite disc groups can be reduced by increasing the number of rows of permanent magnets on the permanent magnet yoke iron disc and conductor copper rings on the conductor yoke iron disc along the radial direction, so that the magnetic coupler is suitable for occasions with larger radial size and limited axial size. On the contrary, on the premise of unchanged power and torque output, the number of rows of permanent magnets on the permanent magnet yoke iron disc and conductor copper rings on the conductor yoke iron disc along the radial direction can be reduced by increasing the number of composite disc groups, so that the radial size is reduced, and the magnetic coupler is suitable for occasions with larger axial size but limited radial size, so that the magnetic coupler is flexible in structure and wide in application range.
Drawings
FIG. 1a is a schematic diagram of a multi-disk magnetically adjustable magnetic coupler in semi-section.
FIG. 1b is a schematic diagram of a multi-disk magnetically adjustable magnetic coupler in partial cross-section.
FIG. 2 is a schematic diagram of a three-dimensional assembly model of a multi-disk magnetically tunable magnetic coupler.
Fig. 3 is a schematic diagram of a coupling frame structure according to an embodiment.
FIG. 4 is a schematic diagram of a three-dimensional model of a permanent magnet rotor disk assembly of an embodiment.
FIG. 5a is a schematic diagram of a three-dimensional model of a conductor rotor disk assembly of an embodiment.
Fig. 5b is a schematic diagram of a three-dimensional model of another preferred embodiment of a squirrel-cage copper layer conductor rotor disk.
Fig. 6 is a schematic diagram of a three-dimensional model of a speed dial assembly according to an embodiment.
Fig. 7 is a schematic diagram of a three-dimensional model of an assembly of a permanent magnet rotor disk, needle bearings, speed regulation disk and conductor rotor disk of an embodiment.
Fig. 8 is a schematic diagram of the magnetic flux adjusting operation principle of the present invention.
Fig. 9a is a schematic view of the magnetic circuit in the non-extreme position of the present invention.
Fig. 9b is a schematic diagram of the magnetic circuit at maximum flux according to the present invention.
Fig. 9c is a schematic diagram of the magnetic circuit at the time of minimum magnetic flux according to the present invention.
Fig. 10a is a schematic view of the minimum magnetic flux limit position of the present invention.
Fig. 10b is a schematic view of the maximum magnetic flux limit position of the present invention.
FIG. 11 is a schematic diagram of the speed adjusting process according to the present invention.
Reference numeral 1, input shaft; 2. a connecting shaft bracket; 3. a permanent magnet; 4. a permanent magnet yoke iron plate; 5. a pinion gear; 6. a motor fastener; 7. a stepping motor; 8. a conductor rotor yoke disc; 9. a speed regulation disc through hole 10 and a conductor copper ring; 11. needle roller bearings; 12. a shaft sleeve; 13. a partition plate; 14. deep groove ball bearings; 15. an output shaft; 16. a speed regulation disc; 17. slotted copper disk, 18, conductor rotor yoke disk, 19 tooth slot yoke.
Detailed Description
In order to make the technical scheme of the present invention more clearly expressed, the present invention will be further described in detail with reference to the accompanying drawings and examples. It must be noted that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.
The application discloses a magnetic coupler with adjustable multi-disc magnetism comprises multiunit compound dish, can increase and decrease the quantity of compound dish according to actual demand, in this embodiment, combines fig. 1a, fig. 1b and fig. 2, and the magnetic coupler that constitutes with 4 compound dishes of group is explained.
The magnetic coupling shown in fig. 1a, 1b and 2 comprises 4 groups of composite discs with identical structures, wherein each group of composite discs consists of a permanent magnet yoke disc 4, a permanent magnet 3, a needle bearing 11, a speed regulation disc 16, a conductor rotor yoke disc 8 and a conductor copper ring 10. Each group of composite discs of the magnetic coupler is provided with a group of corresponding speed regulating devices, and each speed regulating device consists of a pinion 5, a stepping motor 7 and a motor fastener 6. The magnetic coupling of the invention further comprises an input shaft 1, a coupling housing 2, an output shaft 15, two shaft sleeves 12, two partition plates 13 and two deep groove ball bearings 14.
Referring to fig. 1a, 1b and 2, the input shaft 1, the coupling frame 2 and the output shaft 15 are coaxially arranged. The input shaft 1 and the connecting shaft frame 2 are connected through bolts, and the output shaft 15 respectively passes through deep groove ball bearings 14 on a middle partition plate and an end partition plate 13 of the connecting shaft frame.
In this embodiment, the power source drives the input shaft to drive the coupling frame to rotate, so that the permanent magnet rotor disc fixed on the coupling frame rotates, electromagnetic induction occurs between the permanent magnet rotor disc and the conductor rotor disc, the conductor rotor disc also starts to rotate, and the conductor rotor disc drives the output shaft to rotate. In this embodiment, the permanent magnet rotor disc and the coupling frame are driving members, the conductor disc and the shaft driven by the conductor disc are driven members, and it should be noted that the above description is only one embodiment of the present invention, and in the design of the present application, both the conductor rotor disc and the permanent magnet rotor disc in the composite disc may be used as a driving unit and a driven unit, that is, when the conductor rotor disc is used as the driving unit, the permanent magnet rotor disc is used as the driven unit; on the contrary, when the permanent magnet rotor disk is used as a driving unit, the conductor rotor disk is used as a driven unit.
In this application, referring to fig. 1, 2 and 3, one end of the coupling bracket is connected to the input shaft by a bolt. During assembly, the middle partition plate, the end partition plate and the axial grooves on the edges of the permanent magnet rotor disk are respectively clamped on the axial convex grooves of the connecting shaft bracket and are fixed by bolts. The connecting plate plane for placing and fixing the stepping motor is arranged on the connecting shaft frame.
More specifically, the aperture of the permanent magnet rotor disc and the speed regulation disc is larger than the shaft diameter of the input shaft, the permanent magnet rotor disc and the speed regulation disc are coaxially arranged with the input shaft, and the input shaft passes through the centers of the permanent magnet rotor disc and the speed regulation disc.
More specifically, the conductor rotor plates in the adjacent two sets of composite plates are bolted to the two end faces of the sleeve 12, respectively, and the sleeve is bolted to the output shaft.
More specifically, the aperture of the permanent magnet rotor disc and the speed regulation disc is larger than the diameter of the shaft sleeve, the permanent magnet rotor disc and the speed regulation disc are coaxially arranged with the shaft sleeve, and the shaft sleeve penetrates through the centers of the permanent magnet rotor disc and the speed regulation disc.
As shown in fig. 4, an axial groove is arranged on the edge of the permanent magnet yoke iron disc 4, and a threaded hole is arranged on the groove and is used for being connected with a connecting shaft bracket through bolts. The permanent magnet yoke plate is provided with a groove body for accommodating the permanent magnet in two layers along the radial direction, and the groove bodies are not closely adjacent to each other, but a certain gap is reserved between the groove bodies. The permanent magnets are alternately arranged in the groove body at intervals by adopting N, S poles, and the magnetizing directions are axially opposite. The permanent magnet yoke iron disc is provided with an annular groove for placing the end face of the needle bearing 11 and fixing the inner ring of the needle bearing and the permanent magnet yoke iron disc through bolts.
As shown in fig. 5a, the conductor copper ring 10 is in a circular ring shape, annular grooves corresponding to the conductors are formed in two layers in the radial direction of the conductor rotor yoke disc, the conductor copper ring is embedded into the annular grooves of the conductor rotor yoke disc 8, and the conductor rotor yoke disc and the conductors are fixed through fasteners. The conductor rotor yoke plates are provided with threaded holes for bolting with the end faces of the shaft sleeve 12, and two conductor rotor yoke plates in two adjacent groups of composite plates are connected into a whole through the two end faces of the shaft sleeve, and the shaft sleeve is fixed on the output shaft by screws.
As shown in fig. 5b, as another preferred solution of the conductor rotor disc, the conductor rotor disc has a squirrel cage structure, a plurality of fan-shaped through slots are formed in the slotted copper disc 17, a raised tooth slot yoke 19 is formed in the conductor rotor yoke disc 18, and the tooth slot yoke 19 is engaged with the fan-shaped through slots. The conductor rotor yoke plates are provided with threaded holes for bolting with the end faces of the shaft sleeve 12, and two conductor rotor yoke plates in two adjacent groups of composite plates are connected into a whole through the two end faces of the shaft sleeve, and the shaft sleeve is fixed on the output shaft by screws.
As shown in fig. 6, the governor disc 16 is made of a high permeability soft magnetic material (e.g., a ferro-silicon based alloy, including but not limited to such materials). The speed regulation disc is provided with through holes 9 corresponding to the permanent magnets on the permanent magnet rotor disc, the gear teeth on the outer edge of the speed regulation disc are meshed with the pinion 5, and in addition, the speed regulation disc is also provided with threaded holes for connecting with the end face of the outer ring of the needle bearing.
The following describes more specifically the positional relationship of the permanent magnet rotor disk, needle roller bearing, speed regulation disk, conductor rotor disk, and the like with reference to fig. 7: the end surfaces of the inner ring and the outer ring of the needle bearing 11 are respectively connected with the permanent magnet rotor disc and the speed regulation disc 16 by bolts, so that the permanent magnet rotor disc and the speed regulation disc can only rotate relatively and do not move axially; the conductor rotor disk 11 is coaxially arranged with the permanent magnet rotor disk and the speed regulation disk, and a certain air gap distance is arranged between the conductor rotor disk and the speed regulation disk.
The invention provides a working principle of a multi-disk magnetic adjustable magnetic coupler, which comprises the following steps:
describing the embodiment, after the power source is input, the input shaft 1 is driven to drive the coupling frame 2 to rotate, the coupling frame drives the 4 permanent magnet rotor discs and the speed regulation disc 16 mounted on the coupling frame to rotate, at this time, annular induction current is generated on the corresponding conductor copper ring 10, and the annular induction current generates an induction magnetic field and a magnetic field generated by the permanent magnet rotor discs to be coupled with each other and generate electromagnetic torque, so that the conductor rotor discs drive the output shaft 15 to rotate, and power is output.
The principle of speed regulation is as follows:
the working principle of the invention is explained with reference to fig. 8, 9a, 9b, 9c and 10. The governor disc 16 is made of a high permeability soft magnetic material (e.g., iron-silicon based alloys, including but not limited to such materials) that has a low magnetic resistance. According to the principle of magneto-resistance minima: the magnetic flux always closes along the path of least reluctance. When the relative position between the speed regulation disc and the permanent magnet rotor disc is regulated, as shown in fig. 9a, the magnetic flux of the part, which is opposite to the surface of the permanent magnet, of the non-through hole on the speed regulation disc is closed along the speed regulation disc, and the part of the magnetic flux does not reach the conductor copper ring; and the magnetic flux of the part of the through hole on the speed regulation disc, which is opposite to the surface part of the permanent magnet, is closed through the conductor copper ring and the conductor rotor yoke disc.
According to the calculation formula phi of magnetic flux E As is clear from =b·s, when the relative distance between the permanent magnet rotor disk and the conductor rotor disk is constant, the magnetic induction B on the conductor copper ring is constant, and the magnetic flux Φ on the conductor copper ring is constant E Depending on the portion S of the through hole of the governor disc facing the area of the permanent magnet.
According to the method, the magnetic flux on the conductor copper ring can be adjusted when the through hole of the speed regulation disc is opposite to the area of the permanent magnet, so that the annular induction current is adjusted, the change of the induction current directly causes the change of the induction magnetic field, and then the rotating speed or torque output by the conductor rotor disc is changed. When the speed regulation disc rotates to the state that the through holes are completely opposite to the gaps between the permanent magnets, the magnetic flux on the conductor copper ring is minimum, and the closed path of magnetic force lines is the minimum electromagnetic torque output by the conductor rotor disc as shown in fig. 9 c. When the speed regulation disc rotates to the position that the through hole is completely opposite to the permanent magnet, the magnetic flux on the conductor copper ring is maximum, and the closed path of magnetic force lines is shown in fig. 9b, the electromagnetic torque output by the conductor rotor disc is maximum.
As shown in the flow chart of fig. 11, in the embodiment of the present application, the number of the composite disc sets is 4, and after any one or more stepper motors 7 receive the instruction, the pinion 5 is driven to rotate by an angle α i The pinion drives the speed regulation disc to rotate relative to the permanent magnet rotor disc by a corresponding angle beta i According to the analysis of the magnetic flux phi on the copper ring of the upper body of the composite plate Ei The output torque T of the group of composite discs can be calculated i The output torque T of the magnetic coupler in the present invention is:
according to the analysis, the relative rotation angles of the speed regulating discs and the permanent magnet rotor discs in the multiple groups of composite discs are respectively adjusted in the design of the magnetic coupler, so that the output rotation speed or torque of the magnetic coupler can be adjusted.
The above embodiments are merely for illustrating the design concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, the scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications according to the principles and design ideas of the present invention are within the scope of the present invention.
Claims (10)
1. A multi-disk magnetically adjustable magnetic coupler, comprising: an input shaft (1), a connecting shaft bracket (2), a stepping motor (7) and an output shaft (15); the output shaft (15) is coaxially arranged with the input shaft (1) and the connecting shaft bracket (2);
the conductor rotor disk comprises a conductor rotor yoke iron disk (8) and a conductor copper ring (10) arranged on the conductor rotor yoke iron disk;
the stepping motor (7) is arranged on the connecting shaft bracket (2) by a motor fastener (6) and drives the pinion (5) to rotate; all the permanent magnet rotor disks are sequentially connected through a connecting shaft bracket (2);
the structure comprises a plurality of groups of composite discs, wherein each composite disc comprises a speed guiding disc (16), a permanent magnet rotor disc, a conductor rotor disc and a needle bearing (11); the permanent magnet rotor disk comprises a permanent magnet yoke iron disk (4) and a tile-shaped permanent magnet (3) arranged in a groove of the permanent magnet yoke iron disk; a plurality of rows of grooves corresponding to the tile-shaped permanent magnets in shape are formed in the permanent magnet yoke iron disc (4) along the radial direction, and the tile-shaped permanent magnets are sequentially arranged in the grooves at intervals in a circulating way according to N poles and S poles; the conductor rotor disk consists of a conductor copper ring (10) and a conductor rotor yoke iron disk (18): an annular groove corresponding to a conductor is formed in a conductor rotor yoke iron disc (18), a conductor copper ring (10) is embedded into the annular groove of the conductor yoke iron disc, and the conductor yoke iron disc and the conductor copper ring are fixed through a fastener; the end surfaces of the inner ring and the outer ring of the needle bearing (11) are respectively connected and fastened with the permanent magnet rotor disk and the speed regulation disk (16) by bolts, and the permanent magnet rotor disk and the speed regulation disk can only rotate relatively.
2. The magnetic coupler with adjustable multi-disc magnetism according to claim 1, wherein the edge of the permanent magnet rotor disc is provided with an axial groove and a threaded hole, the groove is clamped in the outer edge convex groove of the connecting shaft frame (2), and meanwhile the permanent magnet rotor disc and the connecting shaft frame (2) are connected and fastened into a whole through bolts.
3. A multi-disc magnetically adjustable magnetic coupler according to claim 1, wherein the conductor rotor discs in two adjacent sets of composite discs are respectively bolted to two end faces of the shaft sleeve (12), and the shaft sleeve (12) is bolted to the output shaft (15); the diameter of the shaft sleeve (12) is smaller than the aperture of the permanent magnet rotor disc and the aperture of the speed regulation disc (16); the shaft sleeve (12) passes through the centers of the permanent magnet rotor disc and the speed regulation disc (16) and is coaxially arranged with the two discs;
the conductor rotor disc is of a squirrel cage structure, a plurality of fan-shaped through grooves are formed in the slotted copper disc (17), a convex tooth socket yoke (19) is formed in the conductor rotor yoke disc (18), and the tooth socket yoke (19) is embedded with the fan-shaped through grooves.
4. The magnetic coupler with adjustable magnetic force of a kind of multiple disk, as set forth in claim 1, characterized in that, the middle part and end part of the said axle bracket (2) are equipped with the baffle (13) separately; a deep groove ball bearing (14) is arranged on the partition plate (13); the output shaft (15) respectively passes through the middle part and the end part of the partition plate (13) and is matched with a deep groove ball bearing (14) on the partition plate (13), and the outer ring of the deep groove ball bearing (14) is fixed on the partition plate (13) by using screws; the edge of the baffle plate (13) is provided with an axial groove and a threaded hole, the groove is clamped in the outer edge convex groove of the connecting shaft frame (2), and the baffle plate (13) and the connecting shaft frame (2) are connected and fastened into a whole through bolts.
5. The multi-disc magnetic adjustable magnetic coupler according to claim 1, wherein the stepping motor (7) is fixed on the connecting shaft frame (2) by a motor fastener (6) through screws, and a pinion (5) is arranged on the shaft of the stepping motor (7); the pinion (5) is meshed with gear teeth on the outer edge of the speed regulation disc (16).
6. A multi-disc magnetically adjustable magnetic coupler according to claim 5, characterized in that the conductor copper ring (10) is circular and the conductor rotor yoke disc (18) and the conductor are fastened by means of fasteners.
7. The magnetic coupler with adjustable multi-disc magnetism according to claim 1, wherein the permanent magnets (3) on the permanent magnet yoke iron disc (4) can be arranged into a single row or a plurality of rows along the radial direction according to actual needs, and the permanent magnets (3) in each row are alternately arranged with N, S poles.
8. The magnetic coupler with adjustable multi-disc magnetism according to claim 1, characterized in that the speed regulation disc (16) is made of a soft magnetic material with high magnetic conductivity, and through holes which are in one-to-one correspondence with the tile-shaped permanent magnets on the permanent magnet yoke iron disc (4) are arranged on the speed regulation disc (16); the outer edge of the speed regulation disc (16) is provided with gear teeth for transmission.
9. The magnetic coupler of claim 1, wherein the number of the composite disc groups can be set to be a single-disc or multi-disc structure according to actual needs.
10. A multi-disc magnetically adjustable magnetic coupler according to any of claims 1-9, wherein the speed disc (16) is made of soft magnetic material with high magnetic permeability, and the change of the output rotation speed and torque of the conductor rotor disc is realized by changing the area of the through holes of the speed disc (16) facing the permanent magnets (3) to adjust the magnetic flux on the conductor copper ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310601089.6A CN116566162A (en) | 2023-05-25 | 2023-05-25 | Magnetic coupler with adjustable magnetic force of many dishes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310601089.6A CN116566162A (en) | 2023-05-25 | 2023-05-25 | Magnetic coupler with adjustable magnetic force of many dishes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116566162A true CN116566162A (en) | 2023-08-08 |
Family
ID=87492851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310601089.6A Pending CN116566162A (en) | 2023-05-25 | 2023-05-25 | Magnetic coupler with adjustable magnetic force of many dishes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116566162A (en) |
-
2023
- 2023-05-25 CN CN202310601089.6A patent/CN116566162A/en active Pending
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