CN112615522A - Magnetic gear assembly and composite motor with same - Google Patents
Magnetic gear assembly and composite motor with same Download PDFInfo
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- CN112615522A CN112615522A CN202011380901.XA CN202011380901A CN112615522A CN 112615522 A CN112615522 A CN 112615522A CN 202011380901 A CN202011380901 A CN 202011380901A CN 112615522 A CN112615522 A CN 112615522A
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- 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
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a magnetic gear component and a composite motor with the same, wherein the magnetic gear component comprises a supporting shaft, a first rotor module, a magnetic adjusting ring module and a second rotor module, wherein the first rotor module is sleeved on the outer peripheral side of the supporting shaft; the magnetic ring adjusting module is sleeved on the outer peripheral side of the supporting shaft and is arranged adjacent to the first rotor module; the second rotor module is sleeved on the outer peripheral side of the supporting shaft and is arranged adjacent to the magnetic adjusting ring module, and at least one of the magnetic adjusting ring module and the second rotor module is detachably connected with the supporting shaft. The invention solves the problem that the whole motor needs to be disassembled when the reduction ratio needs to be changed in the composite motor in the prior art.
Description
Technical Field
The invention relates to the technical field of non-contact transmission, in particular to a magnetic gear component and a composite motor with the same.
Background
Among the prior art, most compound motor of magnetic gear all is nested formula structure, particularly, installs magnetic gear assembly's inner rotor, transfers magnetic ring and outer rotor with the mode of radial nested formula, and the compound motor of above-mentioned structural style only has a reduction ratio, when the reduction ratio that needs to change compound motor, needs to disassemble compound motor wholly, and the process of disassembling is comparatively loaded down with trivial details complicated, has the possibility of damaging compound motor.
Disclosure of Invention
The invention mainly aims to provide a magnetic gear component and a composite motor with the same, and aims to solve the problem that the composite motor in the prior art needs to be disassembled when the reduction ratio needs to be changed.
In order to achieve the above object, according to one aspect of the present invention, there is provided a magnetic gear assembly including a support shaft, a first rotor module, a magnetism adjusting ring module, and a second rotor module, wherein the first rotor module is fitted over an outer circumferential side of the support shaft; the magnetic ring adjusting module is sleeved on the outer peripheral side of the supporting shaft and is arranged adjacent to the first rotor module; the second rotor module is sleeved on the outer peripheral side of the supporting shaft and is arranged adjacent to the magnetic adjusting ring module, and at least one of the magnetic adjusting ring module and the second rotor module is detachably connected with the supporting shaft.
Further, the first rotor module comprises a first rotor iron core and a first magnetic element, wherein the first rotor iron core comprises an iron core disc and an iron core flanging, a first via hole structure is formed in the geometric center of the iron core disc, the supporting shaft penetrates through the first via hole structure, the first end of the iron core flanging is connected with the peripheral edge of the iron core disc, and the second end of the iron core flanging extends along the axial direction of the iron core disc for a preset distance length and then extends along the radial direction of the iron core disc to one side far away from the supporting shaft; the first magnetic element is arranged on the inner surface of the iron core flanging.
Further, the iron core turn-ups is ring structure, and the iron core turn-ups encloses into the holding tank with the iron core dish, and first magnetic element is a plurality of, and a plurality of first magnetic element set up around the turn-ups of iron core circumference interval.
Further, the magnetic gear component further comprises a stator core, the stator core is sleeved on the outer peripheral side of the supporting shaft and located in the accommodating groove, and the magnetic adjusting ring module is arranged adjacent to the stator core.
Further, the stator core comprises a core ring, a winding arm and a limiting block, wherein a second through hole structure is formed in the geometric center of the core ring, and the supporting shaft penetrates through the second through hole structure; the first end of the winding arm is connected with the peripheral surface of the iron core ring, and the winding arm is used for winding a coil; the inner wall surface of the limiting block is connected with the winding arm, and limiting spaces are formed between the two ends of the limiting block and the iron core ring.
Further, the winding arm is a plurality of, and a plurality of winding arms set up along the circumference looks interval of iron core ring, and the stopper is a plurality of, and a plurality of stoppers set up with a plurality of winding arms one-to-one.
Further, the diameter of the shaft section of the support shaft provided with the stator core is larger than that of the shaft section of the support shaft provided with the first rotor module, and the diameter of the shaft section of the support shaft provided with the stator core is larger than that of the shaft section of the support shaft provided with the magnetic adjusting ring module.
Furthermore, the two ends of the shaft section of the supporting shaft, which is provided with the stator core, are respectively arranged to protrude out of the end faces of the two axial ends of the stator core, a first winding gap is formed between the end face of the first axial end of the stator core and the disc face of the core disc, and a second winding gap is formed between the end face of the second axial end of the stator core and the end face of the magnetic adjusting ring module.
Further, the magnetic regulating ring module comprises a support ring, a limiting arm and a magnetic regulating iron core, wherein the support ring is provided with a third through hole structure, and the support shaft penetrates through the third through hole structure; the first ends of the limiting arms are connected with the outer peripheral surface of one axial end of the support ring, the second ends of the limiting arms extend from inside to outside along the radial direction of the support ring, the limiting arms are arranged in a plurality of spaced mode around the circumferential direction of the support ring, and an installation gap is formed between every two adjacent limiting arms; the magnetic iron core is arranged in the installation gap, the magnetic iron cores are arranged in a plurality of positions, the installation gap is arranged in a plurality of positions, and the magnetic iron cores are arranged in a one-to-one correspondence mode with the installation gaps.
Furthermore, the end face of the first end of the magnetic adjusting iron core is in smooth transition with the end face of the second end of the limiting arm, and the second end of the magnetic adjusting iron core extends to the outer peripheral face of the supporting ring along the radial direction of the supporting ring.
Further, in the direction of the first end of the magnetic adjusting iron core to the second end of the magnetic adjusting iron core, the area of the cross section of the magnetic adjusting iron core is gradually increased, so that the surface of the magnetic adjusting iron core facing the first magnetic element is matched with the surface of the first magnetic element on one side of the groove wall surface far away from the accommodating groove.
The second rotor module comprises a second rotor core and a second magnetic element, wherein the second rotor core is provided with a fourth via hole structure, the supporting shaft is arranged through the fourth via hole structure, the second rotor core comprises a first ring segment and a second ring segment which are connected, the first ring segment and the second ring segment are coaxially arranged, the area of the cross section of the first ring segment is larger than that of the cross section of the second ring segment, and a step structure is formed at the connecting position of the first ring segment and the second ring segment; the second magnetic element is arranged at the step structure position, the end face of the first end of the second magnetic element is flush with the peripheral surface of the first ring segment, and the second end of the second magnetic element extends to the peripheral surface of the second ring segment along the radial direction of the first ring segment.
Furthermore, the second magnetic elements are multiple, and the multiple second magnetic elements are arranged around the second ring segment at intervals in the circumferential direction.
Furthermore, a first bearing chamber is formed between the hole wall surface of the first via hole structure and the outer peripheral surface of the support shaft, the first bearing chamber is used for installing a first bearing to support the first rotor module, a second bearing chamber is formed between the hole wall surface of the third via hole structure and the outer peripheral surface of the support shaft, and the second bearing chamber is used for installing a second bearing to support the magnetic adjusting ring module.
Furthermore, the second rotor core further comprises a third ring segment, the third ring segment is connected with the second ring segment, the third ring segment and the second ring segment are coaxially arranged, and the end face, far away from the first ring segment, of the third ring segment is used for being abutted to the inner ring of the second bearing.
According to another aspect of the present invention, there is provided a compound motor comprising a magnet gear assembly as described above.
By applying the technical scheme of the invention, each part in the magnetic gear assembly is modularized by optimizing the structure of the magnetic gear assembly of the compound motor, specifically, the first rotor module, the magnetic adjusting ring module and the second rotor module are assembled together through the support shaft, so that the assembled magnetic gear assembly forms an axial structure, the structural compactness of the magnetic gear assembly is ensured, and the miniaturization design of the compound motor is facilitated; in addition, when the reduction ratio of compound motor needs to be changed, only need to change the second rotor module of the different models on the back shaft and the accent magnetic ring module of different models to ensure that compound motor can carry out the operation according to required reduction ratio, convenient operation is swift, owing to only need change the second rotor module of different models and the accent magnetic ring module of different models, can also ensure compound motor's security.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 illustrates a cross-sectional structural schematic view of a magnet gear assembly of a compound motor according to an alternative embodiment of the present invention;
FIG. 2 illustrates a schematic structural view of a first rotor module of the magnet gear assembly of FIG. 1;
FIG. 3 illustrates a schematic structural view of a magnetic tuning ring module of the magnetic gear assembly of FIG. 1;
FIG. 4 shows a schematic structural view of a second rotor module of the magnet gear assembly of FIG. 1;
FIG. 5 shows a schematic structural view of a stator core of the magnetic gear assembly of FIG. 1;
FIG. 6 is a schematic view of the first coupling member of the magnet gear assembly of FIG. 1;
fig. 7 shows a schematic view of the second coupling of the magnet gear assembly of fig. 1.
Wherein the figures include the following reference numerals:
10. a support shaft; 20. a first rotor module; 21. a first rotor core; 211. an iron core disc; 212. flanging the iron core; 213. a first via structure; 22. a first magnetic element; 30. a magnetic ring adjusting module; 31. a support ring; 311. a third via structure; 32. a limiting arm; 33. a magnetic regulating iron core; 40. a second rotor module; 41. a second rotor core; 411. a fourth via structure; 412. a first ring segment; 413. a second ring segment; 414. a third ring segment; 42. a second magnetic element; 50. a stator core; 51. an iron core ring; 52. a winding arm; 53. a limiting block; 60. a first connecting member; 61. a first fitting groove; 611. a first assembly hole; 70. a second connecting member; 71. a second assembly hole; 72. a second assembly groove; 73. a positioning column; 100. accommodating grooves; 200. a first bearing chamber; 300. a second bearing chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem that the whole machine needs to be disassembled when the reduction ratio of the compound motor in the prior art needs to be changed, the invention provides a magnetic gear assembly and a compound motor.
As shown in fig. 1, the magnetic gear assembly includes a support shaft 10, a first rotor module 20, a magnetic adjusting ring module 30 and a second rotor module 40, wherein the first rotor module 20 is sleeved on the outer periphery side of the support shaft 10; the magnetic adjusting ring module 30 is sleeved on the outer peripheral side of the support shaft 10 and is arranged adjacent to the first rotor module 20; the second rotor module 40 is sleeved on the outer peripheral side of the support shaft 10 and is arranged adjacent to the magnetic ring adjusting module 30, and at least one of the magnetic ring adjusting module 30 and the second rotor module 40 is detachably connected with the support shaft 10.
The structure of the magnetic gear assembly of the compound motor is optimized, so that all parts in the magnetic gear assembly are modularized, specifically, the first rotor module 20, the magnetic adjusting ring module 30 and the second rotor module 40 are assembled together through the support shaft 10, so that the assembled magnetic gear assembly forms an axial structure, the structural compactness of the magnetic gear assembly is ensured, and the miniaturization design of the compound motor is facilitated; in addition, when the reduction ratio of the compound motor needs to be changed, only the second rotor modules 40 of different models and the magnetic ring adjusting modules 30 of different models on the supporting shaft 10 need to be changed, so that the compound motor can be operated according to the required reduction ratio, the operation is convenient and fast, and the safety of the compound motor can be ensured due to the fact that only the second rotor modules 40 of different models and the magnetic ring adjusting modules 30 of different models need to be changed.
Note that in the present application, the first rotor module 20 is a high speed side, and the second rotor module 40 is a low speed side.
As shown in fig. 1 and 2, the first rotor module 20 includes a first rotor core 21 and a first magnetic element 22, wherein the first rotor core 21 includes a core disc 211 and a core flange 212, a first via structure 213 is disposed at a geometric center of the core disc 211, the support shaft 10 passes through the first via structure 213, a first end of the core flange 212 is connected to a peripheral edge of the core disc 211, and a second end of the core flange 212 extends along an axial direction of the core disc 211 for a predetermined distance and then extends along a radial direction of the core disc 211 to a side away from the support shaft 10; the first magnetic element 22 is disposed on the inner surface of the core flange 212. In this way, the magnetizing reliability of the first magnetic element 22 is ensured.
As shown in fig. 2, the core flange 212 has an annular structure, the core flange 212 and the core disc 211 define the receiving slot 100, the number of the first magnetic elements 22 is multiple, and the multiple first magnetic elements 22 are arranged around the core flange 212 at intervals in the circumferential direction. Thus, it is ensured that the first rotor core 21 can be trumpet-shaped, the plurality of first magnetic elements 22 are uniformly attached to the circumferential inner surface of the core flange 212, and the first magnetic elements 22 are alternately arranged in a positive-negative mode.
Note that, in the present application, as shown in fig. 2, the surface of the first magnetic element 22 on the side facing the inner surface of the core flange 212 is fitted to the inner surface of the core flange 212. In this way, it is ensured that the first magnetic element 22 can be radially magnetized along its own arc direction.
Alternatively, in an embodiment of the present application, which is not shown in the drawings, the axial surface of the first rotor core 21 and the radial surface of the first rotor core 21 are perpendicular to each other, and the first magnetic element 22 is divided into two parts, one part of the first magnetic element 22 is attached to the axial surface of the first rotor core 21 for generating torque, the other part of the first magnetic element 22 is attached to the radial surface of the first rotor core 21 for transmitting torque by magnetic field modulation in the axial direction, the first magnetic element 22 of the part is magnetized in parallel, and the positions of the first magnetic elements 22 of the two parts are in one-to-one correspondence, that is, when the magnetizing direction of the first magnetic element 22 attached to the axial surface of the first rotor core 21 is outward in the radial direction, the magnetizing direction of the corresponding first magnetic element 22 attached to the radial surface of the first rotor core 21 is directed toward the first rotor core 21 in the axial direction, and each first magnetic element 22 is alternately arranged in positive and negative directions.
As shown in fig. 1 and 5, the magnetic gear assembly further includes a stator core 50, the stator core 50 is sleeved on the outer peripheral side of the support shaft 10 and is located in the receiving groove 100, and the magnetic adjusting ring module 30 is disposed adjacent to the stator core 50. Thus, the mounting reliability of the stator core 50 is ensured.
As shown in fig. 1 and 5, the stator core 50 includes a core ring 51, a winding arm 52 and a limiting block 53, wherein a second through hole structure is formed at a geometric center of the core ring 51, and the support shaft 10 passes through the second through hole structure; a first end of the winding arm 52 is connected to the outer peripheral surface of the core ring 51, and the winding arm 52 is used for winding a coil; the inner wall surface of the limiting block 53 is connected with the winding arm 52, and a limiting space is formed between the two ends of the limiting block 53 and the iron core ring 51. Thus, the winding reliability of the stator core 50 is ensured.
In the present application, the stator core 50 is formed by laminating magnetic conductive materials, the winding is wound around the winding arm 52 of the stator core 50 in a concentrated winding manner, and the support shaft 10 and the stator core 50 are connected integrally by welding.
As shown in fig. 5, the winding arms 52 are plural, the plural winding arms 52 are provided at intervals in the circumferential direction of the core ring 51, the plural stoppers 53 are provided, and the plural stoppers 53 are provided in one-to-one correspondence with the plural winding arms 52. Thus, the operational reliability of the stator core 50 is ensured.
It should be noted that, in the present application, considering that the support shaft 10 and the stator core 50 are connected into a whole by welding, on the premise of ensuring that the support shaft 10 has sufficient strength, as shown in fig. 1 and 5, the diameter of the shaft section of the support shaft 10 where the stator core 50 is arranged is larger than the diameter of the shaft section of the support shaft 10 where the first rotor module 20 is arranged, and the diameter of the shaft section of the support shaft 10 where the stator core 50 is arranged is larger than the diameter of the shaft section of the support shaft 10 where the magnetism adjusting ring module 30 is arranged. In this way, the mounting reliability of the components at different shaft diameter positions of the respective shaft segments of the support shaft 10 is ensured.
As shown in fig. 1 and 5, both ends of the shaft section of the support shaft 10, at which the stator core 50 is disposed, protrude from end surfaces of both axial ends of the stator core 50, a first winding gap is formed between an end surface of a first axial end of the stator core 50 and a disk surface of the core disk 211, and a second winding gap is formed between an end surface of a second axial end of the stator core 50 and an end surface of the magnetic adjusting ring module 30. Thus, the winding formed after winding on the winding arm 52 of the stator core 50 is ensured not to contact with the disc surface of the core disc 211 or the end surface of the magnetic adjusting ring module 30, the winding is prevented from being abraded, and the working reliability of the stator core 50 is ensured.
As shown in fig. 1 and 3, the magnetic adjustment ring module 30 includes a support ring 31, a limit arm 32 and a magnetic adjustment iron core 33, the support ring 31 has a third through hole structure 311, and the support shaft 10 is disposed through the third through hole structure 311; the first end of each limiting arm 32 is connected with the outer peripheral surface of one axial end of the support ring 31, the second end of each limiting arm 32 extends from inside to outside along the radial direction of the support ring 31, the limiting arms 32 are multiple, the limiting arms 32 are arranged around the circumferential direction of the support ring 31 at intervals, and a mounting gap is formed between every two adjacent limiting arms 32; the magnetic adjustment iron core 33 is arranged in the installation gap, the magnetic adjustment iron cores 33 are multiple, the installation gap is multiple, and the magnetic adjustment iron cores 33 and the installation gaps are arranged in a one-to-one correspondence mode. Thus, the mounting reliability of the field adjusting core 33 is ensured.
It should be noted that, in the present application, the magnetic tuning core 33 is made of a laminated magnetic conductive material and is mounted between the two limiting arms 32 on the supporting ring 31 in an adhesion manner, so as to form a completed magnetic tuning ring module 30.
In the present application, an end surface of the first end of the magnetic adjustment core 33 and an end surface of the second end of the limiting arm 32 are in smooth transition, and the second end of the magnetic adjustment core 33 extends to the outer peripheral surface of the support ring 31 along the radial direction of the support ring 31. Thus, the regularity of the magnetic adjusting ring module 30 is ensured, and the aesthetic feeling of the appearance of the magnetic adjusting ring module 30 is improved.
It should be noted that, in the present application, considering that the more uniform the air gap between the flux adjusting core 33 and the first magnetic element 22, the more stable the transmitted torque, as shown in fig. 3, in the direction from the first end of the flux adjusting core 33 to the second end of the flux adjusting core 33, the area of the cross section of the flux adjusting core 33 gradually increases, so that the surface of the flux adjusting core 33 facing the first magnetic element 22 is matched with the surface of the first magnetic element 22 on the side of the groove wall surface away from the accommodating groove 100. In this way, uniformity of the air gap between the field adjusting core 33 and the first magnetic element 22 is ensured, thereby ensuring stability of the transmitted torque.
Alternatively, the support ring 31 and the stopper arm 32 are made of a non-magnetic material, and the support ring 31 and the stopper arm 32 are integrally formed.
As shown in fig. 1, a second bearing chamber 300 is formed between the wall surface of the third via hole structure 311 and the outer circumferential surface of the support shaft 10, the second bearing chamber 300 is used for installing a second bearing to support the magnetic modulating ring module 30, and in addition, due to the existence of the second bearing, in the process of disassembling the magnetic modulating ring module 30, the composite motor is prevented from being damaged.
Specifically, the hole wall surface of the third via structure 311 is formed with an annular plate that divides the space between the hole wall surface of the third via structure 311 and the outer circumferential surface of the support shaft 10 into two second bearing chambers 300.
Alternatively, the magnetic modulating ring module 30 is supported and restrained by the second bearings located in the two second bearing chambers 300, ensuring that the magnetic modulating ring module 30 can maintain a preset distance from the second rotor module 40 and the stator core 50, thereby ensuring that the magnetic modulating ring module 30 rotates independently of the support shaft 10.
As shown in fig. 1 and 4, the second rotor module 40 includes a second rotor core 41 and a second magnetic element 42, wherein the second rotor core 41 has a fourth through hole structure 411, the support shaft 10 is disposed through the fourth through hole structure 411, the second rotor core 41 includes a first ring segment 412 and a second ring segment 413 connected to each other, the first ring segment 412 and the second ring segment 413 are coaxially disposed, an area of a cross section of the first ring segment 412 is larger than an area of a cross section of the second ring segment 413, and a step structure is formed at a connection position of the first ring segment 412 and the second ring segment 413; the second magnetic element 42 is disposed at the step structure position, an end face of a first end of the second magnetic element 42 is flush with an outer peripheral surface of the first ring segment 412, and a second end of the second magnetic element 42 extends to the outer peripheral surface of the second ring segment 413 along a radial direction of the first ring segment 412.
Note that, in the present application, the second rotor core 41 is made of a laminated magnetic material, and the aperture of the fourth via structure 411 is the same as the diameter of the shaft section of the support shaft 10.
Optionally, the second magnetic element 42 is plural, and the plural second magnetic elements 42 are disposed at intervals around the circumference of the second ring segment 413. In this way, operational reliability of the second rotor module 40 is ensured.
As shown in fig. 1, a first bearing chamber 200 is formed between the hole wall surface of the first via structure 213 and the outer circumferential surface of the support shaft 10, and the first bearing chamber 200 is used to mount a first bearing to support the first rotor module 20, thus ensuring the rotational reliability of the first rotor module 20.
Alternatively, the first bearing compartments 200 are two, and the two first bearing compartments 200 are adjacently disposed in the axial direction of the support shaft 10.
It should be noted that, in the present application, considering that the second rotor module 40 is a fixed component and the magnetic adjustment ring module 30 is a rotating component, as shown in fig. 4, the second rotor core 41 further includes a third ring segment 414, the third ring segment 414 is connected to the second ring segment 413, the third ring segment 414 is coaxially disposed with the second ring segment 413, and an end surface of the third ring segment 414, which is far away from the first ring segment 412, is used for abutting against an inner ring of the second bearing. Thus, the rotational reliability of the magnetism adjusting ring module 30 is ensured.
In the present application, the geometric center line of the core ring 51 in the circumferential direction coincides with the geometric center line of the winding arm 52 in the circumferential direction of the core ring 51.
In the present application, the support shaft 10 is integrally formed of a material having high rigidity, and threaded holes are formed in end surfaces of both ends of the support shaft 10.
As shown in fig. 1 and 6, the magnetic gear assembly further includes a first connecting member 60, the first connecting member 60 has a first assembling groove 61, a first assembling hole 611 is formed on a groove bottom surface of the first assembling groove 61, and the magnetic gear assembly further includes a first fastening member, which passes through the first assembling hole 611 and extends into a threaded hole on an end surface of the first end of the support shaft 10.
Alternatively, the first connecting member 60 is made of a common metal material, the diameter of the first assembling groove 61 is the same as that of the end shaft section of the first end of the supporting shaft 10, the first connecting member 60 is tightly pressed and mounted on the shaft section of the end of the first end of the supporting shaft 10, the first connecting member 60 tightly presses the first bearing in the first bearing chamber 200 close to the outer side, and the first bearing in the first bearing chamber 200 at the inner side and the step structure of the supporting shaft 10 at the first through hole structure 213 are combined to limit the first rotor module 20, so that the first rotor module 20 can rotate independently of the supporting shaft 10.
As shown in fig. 1 and 7, the magnetic gear assembly further includes a second connecting member 70, the second connecting member 70 has a second assembling groove 72, second assembling holes 71 are formed on the groove wall surface and the groove bottom surface of the second assembling groove 72, the magnetic gear assembly further includes a second fastening member, and the second fastening member passes through the second assembling hole 71 and extends into the threaded hole on the end surface of the second end of the support shaft 10 or the threaded hole in the radial direction of the second end of the support shaft 10.
As shown in fig. 1 and 7, the notch peripheral position of the second assembling groove 72 of the second connecting member 70 is further provided with a positioning column 73, a positioning hole is formed at a position opposite to the positioning column 73 on the end surface of the first end side of the second rotor core 41 away from the supporting shaft 10, and the second connecting member 70 is inserted into the positioning hole through the positioning column 73 to complete positioning and installation of the second connecting member 70, so that installation reliability of the second connecting member 70 is ensured.
Alternatively, the depth of the positioning hole does not exceed 1/3 the thickness of the second rotor core 41.
Optionally, the number of the positioning pillars 73 is multiple, the positioning pillars 73 are arranged around the periphery of the notch of the second assembling groove 72 of the second connecting member 70 at intervals, the number of the positioning holes is multiple, and the positioning holes and the positioning pillars 73 are arranged in one-to-one correspondence.
Alternatively, the second connector 70 is made of a metal material having high resistance to the deformation, and the diameter of the second fitting groove 72 is the same as that of the end shaft section of the second end of the support shaft 10.
As shown in fig. 7, the hole center lines of the second fitting holes 71 on the groove wall surfaces of the second fitting grooves 72 are perpendicular to the axis of the support shaft 10, and two second fitting holes 71 are opened on the groove wall surfaces of the second fitting grooves 72, the hole center lines of the two second fitting holes 71 are in the same plane, and the included angle between the two hole center lines is 90 degrees.
It should be noted that, in the present application, the first bearing and the second bearing both use bearings with strong lateral load-bearing capacity.
It should be noted that, in the present application, the number of pole pairs of the first rotor module 20 is P1, the number of pole pairs of the second rotor module 40 is P2, the number of the magnetic tuning cores 33 of the magnetic tuning ring module 30 is N, and the magnetic gear assembly operates in such a manner that the magnetic tuning ring module 30 modulates the magnetic field generated by the first magnetic element 22 in the first rotor module 20 and the magnetic field generated by the second magnetic element 42 in the second rotor module 40, so that the harmonic component of the modulated air gap flux density on the first rotor module 20 side and the harmonic component of the modulated air gap flux density on the second rotor module 40 side have the same number of pole pairs. According to maxwell tensor theory, if two harmonic components have the same pole pair number and the spatial phase difference does not change with time, stable torque transmission can be realized. Therefore, according to the above analysis, when the number N of the magnetic tuning cores 33 of the magnetic tuning ring module 30 satisfies: if the first and second rotor modules 20 and 40 rotate in opposite directions at a speed ratio of P2/P1, when N is P1+ P2, a stable torque transmission can be achieved with a transmission ratio of P2/P1. According to the structural characteristics, the second rotor module 40 is fixed, and the magnetic regulating ring module 30 is used as a low-speed output rotor, and the speed regulating ratio of the first rotor module 20 and the magnetic regulating ring module 30 is (P1+ P2)/P1.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A magnetic gear assembly, comprising:
a support shaft (10);
a first rotor module (20), wherein the first rotor module (20) is sleeved on the outer peripheral side of the supporting shaft (10);
the magnetic adjusting ring module (30) is sleeved on the outer peripheral side of the supporting shaft (10), and the magnetic adjusting ring module (30) is arranged adjacent to the first rotor module (20);
the second rotor module (40) is sleeved on the outer peripheral side of the supporting shaft (10) and is arranged adjacent to the magnetic adjusting ring module (30), and at least one of the magnetic adjusting ring module (30) and the second rotor module (40) is detachably connected with the supporting shaft (10).
2. The magnetic gear assembly according to claim 1, wherein the first rotor module (20) comprises:
the first rotor iron core (21) comprises an iron core disc (211) and an iron core flanging (212), a first via hole structure (213) is formed in the geometric center of the iron core disc (211), the support shaft (10) penetrates through the first via hole structure (213) to be arranged, the first end of the iron core flanging (212) is connected with the periphery of the iron core disc (211), and the second end of the iron core flanging (212) extends along the axial direction of the iron core disc (211) for a preset distance and then extends along the radial direction of the iron core disc (211) to one side far away from the support shaft (10);
a first magnetic element (22), the first magnetic element (22) being disposed on an inner surface of the core flange (212).
3. The magnetic gear assembly according to claim 2, characterized in that the core flange (212) is of an annular structure, the core flange (212) and the core disc (211) enclose a receiving groove (100), the first magnetic elements (22) are multiple, and the first magnetic elements (22) are arranged around the core flange (212) at intervals in the circumferential direction.
4. The magnetic gear assembly according to claim 3, further comprising:
the stator core (50) is sleeved on the outer peripheral side of the supporting shaft (10) and is located in the accommodating groove (100), and the magnetic adjusting ring module (30) is arranged adjacent to the stator core (50).
5. The magnet gear assembly according to claim 4, wherein the stator core (50) comprises:
the geometric center of the iron core ring (51) is provided with a second through hole structure, and the support shaft (10) penetrates through the second through hole structure;
a winding arm (52), wherein a first end of the winding arm (52) is connected with the outer peripheral surface of the iron core ring (51), and the winding arm (52) is used for winding a coil;
the inner wall surface of the limiting block (53) is connected with the winding arm (52), and a limiting space is formed between two ends of the limiting block (53) and the iron core ring (51).
6. The magnetic gear assembly according to claim 5, wherein the plurality of winding arms (52) are provided, the plurality of winding arms (52) are arranged at intervals along the circumferential direction of the iron core ring (51), the plurality of limiting blocks (53) are provided, and the plurality of limiting blocks (53) and the plurality of winding arms (52) are arranged in a one-to-one correspondence manner.
7. The magnetic gear assembly according to claim 6, characterized in that a diameter of a shaft section of the support shaft (10) where the stator core (50) is disposed is larger than a diameter of a shaft section of the support shaft (10) where the first rotor module (20) is disposed, and a diameter of a shaft section of the support shaft (10) where the stator core (50) is disposed is larger than a diameter of a shaft section of the support shaft (10) where the magnetism adjusting ring module (30) is disposed.
8. The magnetic gear assembly according to claim 7, wherein both ends of the shaft section of the support shaft (10) where the stator core (50) is disposed are protruded from end faces of both axial ends of the stator core (50), a first winding gap is formed between an end face of a first axial end of the stator core (50) and a disk face of the core disk (211), and a second winding gap is formed between an end face of a second axial end of the stator core (50) and an end face of the magnetic flux regulating ring module (30).
9. The magnet gear assembly according to claim 8, wherein the magnet adjusting ring module (30) comprises:
a support ring (31), the support ring (31) having a third via structure (311), the support shaft (10) being disposed through the third via structure (311);
the first end of each limiting arm (32) is connected with the outer peripheral surface of one axial end of the support ring (31), the second end of each limiting arm (32) extends from inside to outside along the radial direction of the support ring (31), the limiting arms (32) are multiple, the limiting arms (32) are arranged around the circumferential direction of the support ring (31) at intervals, and an installation gap is formed between every two adjacent limiting arms (32);
transfer magnetic core (33), transfer magnetic core (33) to set up in the installation breach, transfer magnetic core (33) to be a plurality of, the installation breach is a plurality of, and is a plurality of transfer magnetic core (33) and a plurality of installation breach sets up one-to-one.
10. The magnetic gear component according to claim 9, characterized in that the end surface of the first end of the magnetic adjusting iron core (33) is in smooth transition with the end surface of the second end of the limiting arm (32), and the second end of the magnetic adjusting iron core (33) extends to the outer circumferential surface of the supporting ring (31) along the radial direction of the supporting ring (31).
11. The magnetic gear assembly according to claim 10, wherein the area of the cross section of the magnetic tuning core (33) is gradually increased from the first end of the magnetic tuning core (33) to the second end of the magnetic tuning core (33) so that the surface of the magnetic tuning core (33) facing the first magnetic element (22) is matched with the surface of the first magnetic element (22) on the side of the groove wall surface away from the accommodating groove (100).
12. A magnetic gear assembly according to claim 11, characterized in that the second rotor module (40) comprises:
the second rotor core (41) is provided with a fourth via hole structure (411), the support shaft (10) penetrates through the fourth via hole structure (411), the second rotor core (41) comprises a first ring segment (412) and a second ring segment (413) which are connected, the first ring segment (412) and the second ring segment (413) are coaxially arranged, the area of the cross section of the first ring segment (412) is larger than that of the cross section of the second ring segment (413), and a step structure is formed at the connecting position of the first ring segment (412) and the second ring segment (413);
the second magnetic element (42) is arranged at the step structure position, the end face of the first end of the second magnetic element (42) is flush with the outer peripheral face of the first ring segment (412), and the second end of the second magnetic element (42) extends to the outer peripheral face of the second ring segment (413) along the radial direction of the first ring segment (412).
13. The magnetic gear assembly according to claim 12, characterized in that the second magnetic element (42) is a plurality of second magnetic elements (42) arranged circumferentially spaced around the second ring segment (413).
14. The magnetic gear assembly according to claim 13, wherein a first bearing chamber (200) is formed between the hole wall surface of the first via structure (213) and the outer circumferential surface of the support shaft (10), the first bearing chamber (200) being used for mounting a first bearing to support the first rotor module (20), a second bearing chamber (300) is formed between the hole wall surface of the third via structure (311) and the outer circumferential surface of the support shaft (10), the second bearing chamber (300) being used for mounting a second bearing to support the magnetic modulating ring module (30).
15. The magnetic gear assembly according to claim 14, wherein the second rotor core (41) further comprises:
and the third ring segment (414) is connected with the second ring segment (413), the third ring segment (414) and the second ring segment (413) are coaxially arranged, and the end face, far away from the first ring segment (412), of the third ring segment (414) is used for abutting against the inner ring of the second bearing.
16. A compound electric machine comprising a magnetic gear assembly, characterised in that the magnetic gear assembly is as claimed in any one of claims 1 to 15.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011380901.XA CN112615522B (en) | 2020-11-30 | 2020-11-30 | Magnetic gear assembly and composite motor with same |
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| CN202011380901.XA CN112615522B (en) | 2020-11-30 | 2020-11-30 | Magnetic gear assembly and composite motor with same |
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| CN112615522B CN112615522B (en) | 2021-11-16 |
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| CN112615522B (en) | 2021-11-16 |
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