CN218976443U - Surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure - Google Patents
Surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure Download PDFInfo
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- CN218976443U CN218976443U CN202320003268.5U CN202320003268U CN218976443U CN 218976443 U CN218976443 U CN 218976443U CN 202320003268 U CN202320003268 U CN 202320003268U CN 218976443 U CN218976443 U CN 218976443U
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Abstract
The utility model discloses a magnetic steel segmented assembly structure of a surface-mounted permanent magnet motor rotor, which relates to the technical field of surface-mounted permanent magnet motor rotors and comprises the following components: a rotor; the plurality of the segment assemblies are arranged at intervals along the length direction of the rotor, and are clamped on the surface of the rotor; the magnetic steel is provided with a plurality of magnetic steels, and the magnetic steels are distributed on the rotor surfaces close to the two ends of the rotor and the rotor surfaces between the adjacent segmented assemblies in an annular array mode on the axis of the rotor. According to the utility model, the segmented assembly is clamped on the surface of the rotor through the arrangement of the segmented assembly, and gaps among the segmented magnetic steels are filled, so that the problem that gaps exist among each group of the segmented rotor magnetic steels in the energy-saving transformation and the old motor maintenance is solved, and meanwhile, a certain pretightening force is also provided for each group of the magnetic steels, so that the phenomena of looseness and falling off after the assembly of the magnetic steels are avoided.
Description
Technical Field
The utility model relates to the technical field of surface-mounted permanent magnet motor rotors, in particular to a surface-mounted permanent magnet motor rotor magnetic steel sectional assembly structure.
Background
At present, the permanent magnet motor is widely applied to various industries, and a good energy-saving effect is achieved. The permanent magnet motor is called a surface-mounted permanent magnet motor in which magnetic steel is mounted outside a motor rotor, the surface-mounted permanent magnet motor rotor is in a salient pole type, and quadrature axis inductance is equal to direct current inductance, so that the waveform of the motor is closer to sine wave, the higher harmonic content of the waveform is lower, the motor has advantages in motor control, and the motor performance is excellent and is used in a large amount. However, due to different application places and working environments, particularly in energy-saving reconstruction and old motor maintenance, a large number of old motor stator windings are good and are not easy to change, the length L of a rotor core at the moment is fixed, a blank interval with magnetic field strength selection can appear on a surface-mounted permanent magnet rotor, for example, 33SH magnetic steel (residual magnetic strength 1.14T) is selected to be slightly weaker in strength, the required magnetic steel length is 1.2L, the magnetic steel exceeds expectations, 35SH magnetic steel (residual magnetic strength 1.18T) is selected to be slightly stronger in strength, and the required magnetic steel length is 0.8L, and the magnetic steel is less than expectations. How to cover the whole length L of the rotor core with the magnetic steel is a problem to be solved.
Therefore, how to provide a magnetic steel sectional assembly structure capable of just enabling the length L of the rotor core to cover the whole magnetic steel is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the utility model provides a surface-mounted permanent magnet motor rotor magnetic steel sectional assembly structure, which aims to solve the problems in the prior art and realize that the length L of a rotor core can be just covered with magnetic steel completely.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a surface-mounted permanent magnet motor rotor magnetic steel sectional assembly structure comprises:
a rotor;
the plurality of the segment assemblies are arranged at intervals along the length direction of the rotor, and are clamped on the surface of the rotor;
the magnetic steels are provided with a plurality of magnetic steels, and the magnetic steels are distributed on the surfaces of the rotors close to the two ends of the rotors and the surfaces of the rotors between the adjacent segmented assemblies in an annular array mode.
Further, the segmentation subassembly includes ring plate and regulation pole, the ring plate is equipped with two, two the internal diameter of ring plate all with the external diameter of rotor equals, two the ring plate interval sets up, it is equipped with a plurality of to adjust the pole, and a plurality of regulation pole evenly distributed is between two the ring plate, every the both ends of adjusting the pole are connected with two respectively the ring plate.
Further, the annular sheet is formed by splicing a plurality of arc-shaped segmented sheets end to end in sequence.
Further, adjacent arc segmentation piece passes through mortise and tenon structure connection.
Further, each arc-shaped segmented piece is provided with a limiting hole, the positions, close to the two ends, of the adjusting rods are provided with limiting shaft shoulders, and when the two ends of the adjusting rods extend into the limiting holes, the limiting shaft shoulders are in contact with the arc-shaped segmented pieces.
Further, the adjusting rod is of a telescopic structure.
Compared with the prior art, the utility model discloses a segmented assembly structure of the rotor magnet steel of the surface-mounted permanent magnet motor, and the segmented assembly is clamped on the surface of the rotor through the arrangement of the segmented assembly, so that gaps among the segmented magnet steels are filled, the problem that gaps exist among each group of the segmented rotor magnet steels in the energy-saving transformation and the old motor maintenance is solved, and meanwhile, certain pretightening force among the groups of magnet steels is also provided, so that the phenomenon that the magnet steels are loose and fall off after being assembled is avoided; the utility model can accurately and efficiently complete the assembly of the segmented magnetic steel, reduces the breakage rate in the assembly process of the magnetic steel, and also avoids the risk of magnetic steel movement in the rotating process of the rotor because only the segmented magnetic steel gap is left without being fixed as a whole; meanwhile, the assembly method can also be used for assembling the oblique pole sectional magnetic steel, so that the surface-mounted oblique pole sectional magnetic steel assembly mode is realized, and the effects of reducing the cogging torque of the motor, reducing the higher harmonic of the motor and improving the comprehensive efficiency of the motor are greatly exerted.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a surface-mounted permanent magnet motor rotor magnetic steel sectional assembly structure provided by the utility model;
FIG. 2 is a schematic diagram of a segment assembly according to the present utility model;
FIG. 3 is a schematic view of an arc segment sheet according to the present utility model;
FIG. 4 is a schematic view of the structure of the adjusting lever according to the present utility model;
fig. 5 is an exploded view of the sectional assembly structure of the rotor magnet steel of the surface-mounted permanent magnet motor.
Wherein: 1 is a rotor; 2 is a segmentation component; 21 is a ring-shaped piece; 211 is an arc-shaped segmented piece; 22 is an adjusting rod; 3 is magnetic steel; and 4 is a limiting hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, an embodiment of the utility model discloses a surface-mounted permanent magnet motor rotor magnetic steel sectional assembly structure, which comprises:
a rotor 1;
the plurality of segment assemblies 2 are arranged, the plurality of segment assemblies 2 are arranged at intervals along the length direction of the rotor 1, and the segment assemblies 2 are clamped on the surface of the rotor 1;
the magnetic steel 3 is provided with a plurality of magnetic steels 3, and the plurality of magnetic steels 3 are distributed on the surface of the rotor 1 close to the two ends of the rotor 1 and the surface of the rotor 1 between the adjacent segmented assemblies 2 in an annular array mode along the axis of the rotor 1.
It should be noted that: the rotor 1 is the rotor 1 with the intact motor stator winding in energy-saving transformation and the old motor maintenance, the segmentation subassembly 2 is used for separating the magnet steel 3 that rotor 1 surface was pasted, when the length of integer number magnet steel 3 can not cover the length L of rotor 1 just, the segmentation subassembly 2 can make up the blank region that segmentation magnet steel 3 can not cover rotor 1 length, through a plurality of segmentation subassemblies 2 setting, can be with the different regions of blank region even distribution on rotor 1, wherein, the material of segmentation subassembly 2 is non-magnetic conductive material such as polyurethane.
By clamping the segmented assembly 2 on the surface of the rotor 1 and filling gaps of the segmented magnetic steels 3, the problem that gaps exist between each group of the segmented magnetic steels in the energy-saving transformation and the old motor maintenance is solved, and meanwhile, certain pretightening force is also provided for each group of the magnetic steels 3, so that the phenomena of loosening and falling of the magnetic steels 3 after assembly are avoided; the utility model can accurately and efficiently complete the assembly of the segmented magnetic steel 3, reduces the breakage rate in the assembly process of the magnetic steel 3, and also avoids the risk that the magnetic steel 3 moves in the rotation process of the rotor 1 by only leaving the gap of the segmented magnetic steel 3 instead of being fixed into a whole; meanwhile, the assembly method can also be used for assembling the oblique pole sectional magnetic steel, so that the surface-mounted oblique pole sectional magnetic steel assembly mode is realized, and the effects of reducing the cogging torque of the motor, reducing the higher harmonic of the motor and improving the comprehensive efficiency of the motor are greatly exerted.
Referring to fig. 2 and 4, according to some embodiments of the present utility model, it is preferable that the segment assembly 2 includes ring segments 21 and adjusting rods 22, the ring segments 21 are provided in two, the inner diameters of the two ring segments 21 are equal to the outer diameter of the rotor 1, the two ring segments 21 are spaced apart, the adjusting rods 22 are provided in plurality, the plurality of adjusting rods 22 are uniformly distributed between the two ring segments 21, and both ends of each adjusting rod 22 are connected with the two ring segments 21, respectively.
It should be noted that: the annular sheets 21 and the adjusting rods 22 are made of non-magnetic conductive materials such as polyurethane, and through the arrangement of the plurality of adjusting rods 22, the two annular sheets 21 can be formed into a structure which is mutually spaced and parallel to each other and is used for guaranteeing the relative positions of the two annular sheets 21, preferably, the difference between the outer radius and the inner radius of the annular sheets 21 is equal to the thickness of the magnetic steel 3, so that the annular sheets 21 can fully support the magnetic steel 3; specifically, adjust pole 22 is scalable structure, and then can change the distance between two ring plates 21 through the length adjustment of adjusting pole 22, but scalable structure's regulation pole 22 is scalable structure among the prior art, specific structure is not repeated here, through adjusting pole 22's setting, can carry out reasonable regulation to the clearance size of segmentation magnet steel, the comprehensive effect of rotor 1 magnetic field is controlled, the balanced whole rotor 1 magnetic field of magnet steel 3 that has realized adopting a small amount of high magnetism density, the problem that surface mounted permanent magnet rotor 1 exists blank interval because of length is fixed when motor stator winding does not change has been solved.
Referring to fig. 3, according to some embodiments of the present utility model, the ring segment 21 is preferably formed by sequentially splicing a plurality of arc segment segments 211 end to end. The end-to-end splicing of the arc-shaped segmented pieces 211 can form an annular structure, the radian of the arc-shaped segmented pieces 211 can be specifically set according to the diameter of the corresponding rotor 1, and each annular piece 21 is formed by splicing the arc-shaped segmented pieces 211, and can be specifically set according to actual requirements. Specifically, each arc-shaped segment piece 211 is provided with a limiting hole 4, the position, close to two ends, of the adjusting rod 22 is provided with limiting shaft shoulders, and when two ends of the adjusting rod 22 extend into the limiting holes 4, the limiting shaft shoulders are in contact with the surfaces of the arc-shaped segment pieces 211. It should be noted that, the length of the end portion of the adjusting rod 22 extending into the limiting hole 4 is less than or equal to the thickness of the arc-shaped segment piece 211, so as to avoid the excessive length of the adjusting rod 22 extending into the limiting hole 4 on the arc-shaped segment piece 211, and influence the installation of the magnetic steel 3. Specifically, the limiting hole 4 may be configured as a regular polygonal hole structure, and the portion of the adjusting rod 22 extending into the limiting hole 4 is configured as a regular polygonal protrusion adapted to the regular polygonal hole, and the regular polygonal structure is configured to prevent the adjusting rod 22 from rotating relative to the arc-shaped segment piece 211.
According to some embodiments of the present utility model, adjacent arcuate segment pieces 211 are connected by a mortise and tenon structure. Specifically, one end of each arc-shaped segment piece 211 is a semicircular groove, the other end is provided with a semicircular convex block which can be matched with the semicircular groove, and the connection of the adjacent arc-shaped segment pieces 211 is realized through the matching of the semicircular groove and the semicircular convex block on the adjacent arc-shaped segment pieces 211.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a surface mounted permanent magnet motor rotor magnet steel segmentation assembly structure which characterized in that includes:
a rotor;
the plurality of the segment assemblies are arranged at intervals along the length direction of the rotor, and are clamped on the surface of the rotor;
the magnetic steels are provided with a plurality of magnetic steels, and the magnetic steels are distributed on the surfaces of the rotors close to the two ends of the rotors and the surfaces of the rotors between the adjacent segmented assemblies in an annular array mode.
2. The surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure according to claim 1, wherein the segmented assembly comprises annular sheets and adjusting rods, the annular sheets are provided with two, the inner diameters of the two annular sheets are equal to the outer diameter of the rotor, the two annular sheets are arranged at intervals, the adjusting rods are provided with a plurality of adjusting rods which are uniformly distributed between the two annular sheets, and two ends of each adjusting rod are connected with the two annular sheets respectively.
3. The surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure according to claim 2, wherein the annular piece is formed by sequentially splicing a plurality of arc-shaped segmented pieces end to end.
4. The surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure according to claim 3, wherein adjacent arc-shaped segmented pieces are connected through a mortise and tenon structure.
5. The surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure according to claim 3, wherein each arc-shaped segmented piece is provided with a limiting hole, the positions, close to two ends, of the adjusting rods are provided with limiting shaft shoulders, and when the two ends of the adjusting rods extend into the limiting holes, the limiting shaft shoulders are in contact with the arc-shaped segmented pieces.
6. The segmented assembly structure of rotor magnet steel for a surface-mounted permanent magnet motor according to any one of claims 2 to 5, wherein the adjusting rod is of a telescopic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003268.5U CN218976443U (en) | 2023-01-03 | 2023-01-03 | Surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003268.5U CN218976443U (en) | 2023-01-03 | 2023-01-03 | Surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure |
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| CN218976443U true CN218976443U (en) | 2023-05-05 |
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| CN202320003268.5U Active CN218976443U (en) | 2023-01-03 | 2023-01-03 | Surface-mounted permanent magnet motor rotor magnetic steel segmented assembly structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118572950A (en) * | 2024-07-29 | 2024-08-30 | 江苏嘉轩智能工业科技股份有限公司 | Air-cooled permanent magnet synchronous direct-drive motor |
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2023
- 2023-01-03 CN CN202320003268.5U patent/CN218976443U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118572950A (en) * | 2024-07-29 | 2024-08-30 | 江苏嘉轩智能工业科技股份有限公司 | Air-cooled permanent magnet synchronous direct-drive motor |
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