CN218633494U - Permanent magnet motor rotor structure - Google Patents
Permanent magnet motor rotor structure Download PDFInfo
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- CN218633494U CN218633494U CN202222898898.1U CN202222898898U CN218633494U CN 218633494 U CN218633494 U CN 218633494U CN 202222898898 U CN202222898898 U CN 202222898898U CN 218633494 U CN218633494 U CN 218633494U
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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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Abstract
The utility model discloses a permanent-magnet machine rotor structure, include: a rotating shaft; the rotor core is sleeved on the rotating shaft, and a plurality of magnetic steel mounting separation grooves which are arranged at intervals are uniformly distributed on the rotor core; a plurality of magnetic steels which are respectively embedded in the corresponding magnetic steel mounting isolation grooves; a plurality of insulating spacers which are respectively embedded between two adjacent magnetic steels; and the magnetic steel hoop is sleeved on the magnetic steel outer ring, and a gap between the magnetic steel hoop and the magnetic steel is filled with an adhesive layer. This permanent-magnet machine rotor structure need not the strapping tape and ties up, only can fix the magnet steel on rotor core through the magnet steel hoop, has not only reduced motor processing cost, need not to tie up moreover, and rotor fixing process convenient and fast, fixed reliable and stable to the surface of magnet steel hoop does not need processing, and smooth finish is good, and the hardness is also superior to the strapping tape. Therefore, compared with the original binding material, the strength of the magnetic steel hoop used at present is higher, and the performance and the reliability of the motor are greatly improved.
Description
Technical Field
The utility model relates to a motor structure technical field, more specifically the utility model relates to a permanent-magnet machine rotor structure that says so.
Background
In the past, after the magnetic steel on the motor rotor is bonded, outer layer binding is carried out to ensure that the magnetic steel is firmly and reliably fixed on a rotor iron core, for example, the application number is CN 111884377A, which is named as a high-speed resistant structure of a permanent magnet motor rotor, CN 203933192U, which is named as a motor rotor. And binding the outer layer of the rotor, which is a key process after the rotor magnetic steel is bonded and dried. It is related to the smooth rotation of the rotor at high speed without deformation. After binding, the binding thickness after processing can not be less than 1.5mm at least, thus greatly improving the performance and reliability of the motor.
However, when the binding is carried out, the binding operation needs to be carried out manually or by a special binding machine, the manual binding needs to be wound for multiple times, the operation process is complicated, and the efficiency is low; the use of the binding machine increases the processing cost of the motor, and the thickness of the binding belt is thicker (the thickness is 1.5 mm), so that the air gap of the motor is larger, the air gap magnetic flux is reduced, the magnetic performance is further reduced, and the service performance of the motor is influenced; moreover, the strapping tape generally adopts a carbon fiber rope, the strength after strapping is low, and the strapping reliability is poor, so that an external sheath needs to be additionally added, and the rotor cost of the motor is increased.
Therefore, the technical problem to be solved by the present invention is how to provide a rotor structure of a permanent magnet motor that does not need a binding tape, is convenient and fast in the rotor fixing process, is stable and reliable in fixing, has a small air gap, and can improve the magnetic performance.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a need strapping and rotor fixing process convenient and fast, fixed reliable and stable, the air gap is little, can improve the permanent-magnet machine rotor structure of magnetic property.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a permanent magnet electric machine rotor structure comprising:
a rotating shaft;
the rotor core is sleeved on the rotating shaft, and a plurality of magnetic steel mounting isolation grooves which are arranged at intervals are uniformly distributed on the rotor core;
a plurality of magnetic steels which are respectively embedded in the corresponding magnetic steel mounting isolation grooves;
a plurality of insulating spacers are embedded between two adjacent magnetic steels respectively;
the magnetic steel hoop is sleeved on the magnetic steel outer ring, and an adhesive layer is poured into a gap between the magnetic steel hoop and the magnetic steel.
According to the technical scheme, compare with prior art, the utility model discloses a permanent magnet motor rotor structure need not the strapping tape and ties up, only can fix the magnet steel on rotor core through the magnet steel hoop, has not only reduced motor processing cost, need not to tie up moreover, and the fixed process convenient and fast of rotor, fixed reliable and stable to the surface of magnet steel hoop does not need processing, and smooth finish is good, and hardness also is superior to the strapping tape. Therefore, compared with the original binding material, the strength of the magnetic steel hoop used at present is higher, and the performance and the reliability of the motor are greatly improved.
Further, the position that is close to its one end in the pivot is equipped with the shaft shoulder, still includes:
the baffle for the first shaft is sleeved at one end of the rotating shaft, and one side of the baffle for the first shaft is abutted against the shaft shoulder;
the first shaft retaining ring is sleeved at the other end of the rotating shaft, and the rotor core is clamped between the first shaft baffle and the first shaft retaining ring;
the baffle for the second shaft is sleeved at the other end of the rotating shaft, and one side of the baffle for the second shaft is stopped at one side, far away from the rotor core, of the first shaft retaining ring;
the baffle for the second shaft is sleeved at the other end of the rotating shaft, one side of the baffle for the second shaft stops at the other side, far away from the baffle for the first shaft, of the baffle for the second shaft, the baffle for the first shaft and the baffle for the second shaft are located at two ends of the magnetic steel hoop, and the magnetic steel, the magnetic steel hoop and the insulating spacer are clamped between the baffle for the first shaft and the baffle for the second shaft.
The beneficial effects that adopt above-mentioned technical scheme to produce are, during the installation, install baffle for the primary shaft earlier, then install rotor core, it is fixed with the baffle for the primary shaft with the centre gripping of retaining ring for the primary shaft cooperation with rotor core both ends, then installation magnet steel and insulating parting bead, then suit magnet steel hoop, pour into the adhesive layer in the gap between magnet steel hoop and magnet steel, suit baffle for the secondary shaft at last, make baffle for the secondary shaft cooperate baffle for the primary shaft with the magnet steel hoop, magnet steel and insulating parting bead centre gripping are fixed between baffle for the secondary shaft and baffle for the primary shaft, then fix baffle for the secondary shaft in the pivot with the retaining ring for the secondary shaft, make permanent magnet rotor form an airtight whole. Therefore, the baffle for the first shaft, the baffle for the second shaft, the retainer ring for the first shaft and the retainer ring for the second shaft can realize the axial clamping and positioning of the rotor iron core, the magnetic steel and the insulating division bar on the rotor.
Furthermore, retainer ring grooves are respectively formed in the positions, located on the first shaft retainer ring and the second shaft retainer ring, of the rotating shaft, and the first shaft retainer ring and the second shaft retainer ring are respectively embedded into the corresponding retainer ring grooves.
Adopt above-mentioned technical scheme to produce beneficial effect be, easily first for the axle retaining ring and the quick location installation of second for the axle retaining ring in the pivot.
Furthermore, the rotor core comprises a plurality of rotor punching sheets, the rotor punching sheets are sequentially sleeved on the rotating shaft and respectively clamped between the first shaft baffle and the first shaft retainer ring, and the magnetic steel mounting separation groove is formed in each rotor punching sheet.
Further, equipartition integrated into one piece has a plurality of archs to separate the area on the periphery wall of rotor punching, adjacent two the arch separates the space between the area and does the magnet steel installation separates the groove.
Furthermore, an integrally formed positioning convex key is arranged on the rotating shaft along the length direction of the rotating shaft, a positioning notch is formed in the wall of the orifice of the sleeved hole of each rotor punching sheet, and the positioning notches are arranged on the positioning convex keys.
The technical scheme has the advantages that the rotor punching sheet is easy to position and install on the rotor, the positions of the magnetic steel installation separation grooves are aligned, and the magnetic steel and the insulation separation strips are convenient to install.
Furthermore, the magnetic steel is bonded in the magnetic steel mounting separation groove.
The beneficial effect who adopts above-mentioned technical scheme to produce is, improves the steadiness that the magnet steel was installed on the rotor punching.
Furthermore, the thickness of the magnetic steel hoop is 0.2-0.4mm.
Furthermore, the thickness of the magnetic steel hoop is 0.3mm.
The beneficial effect that adopts above-mentioned technical scheme to produce is that, uses the ligature that the magnetic steel hoop used strapping tape than original motor rotor magnet steel (minimum thickness after the ligature processing 1.5 mm), its technology air gap will be little, has increased the air gap magnetic flux of motor for magnetic property improves.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a rotor structure of a permanent magnet motor according to the present invention.
Fig. 2 is a schematic cross-sectional structural view of a rotor structure of a permanent magnet motor according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses permanent-magnet machine rotor structure, include:
a rotating shaft 1;
the rotor core 2 is sleeved on the rotating shaft 1, and a plurality of magnetic steel mounting separation grooves 201 which are arranged at intervals are uniformly distributed on the rotor core 2;
a plurality of magnetic steels 3 are embedded in the corresponding magnetic steel mounting partition grooves 201 respectively, and in order to improve the stability of the magnetic steels, the magnetic steels 3 can be bonded in the magnetic steel mounting partition grooves 201;
a plurality of insulating spacers 4 are arranged, and the insulating spacers 4 are respectively embedded between two adjacent magnetic steels 3;
and the magnetic steel hoop 5 is sleeved on the outer ring of the magnetic steel 3, and a gap between the magnetic steel hoop 5 and the magnetic steel 3 is filled with an adhesive layer 6.
Specifically, the position that is close to its one end on the pivot 1 is equipped with shaft shoulder 101, still includes:
a baffle 7 for a first shaft, wherein the baffle 7 for the first shaft is sleeved at one end of the rotating shaft 1, and one side of the baffle 7 for the first shaft is abutted against the shaft shoulder 101;
the first shaft retaining ring 8 is sleeved at the other end of the rotating shaft 1, and the rotor core 2 is clamped between the first shaft baffle 7 and the first shaft retaining ring 8;
the baffle 9 for the second shaft is sleeved at the other end of the rotating shaft 1, and one side of the baffle 9 for the second shaft is stopped at one side, far away from the rotor core 2, of the first retaining ring 8 for the second shaft;
the baffle plate for the second shaft 7 and the baffle plate for the second shaft 9 are positioned at two ends of the magnetic steel hoop 5, and the magnetic steel 3, the magnetic steel hoop 5 and the insulating spacer 4 are clamped between the baffle plate for the first shaft 7 and the baffle plate for the second shaft 9.
The rotating shaft 1 is provided with retainer grooves 102 at positions of the first shaft retainer ring 8 and the second shaft retainer ring 10, and the first shaft retainer ring 8 and the second shaft retainer ring 10 are respectively embedded in the corresponding retainer grooves 102.
In the above embodiment, the rotor core 2 includes a plurality of rotor sheets 21, the plurality of rotor sheets 21 are sequentially sleeved on the rotating shaft 1 and respectively clamped between the first shaft baffle 7 and the first shaft retainer 8, and each rotor sheet 21 is provided with a magnetic steel mounting spacer 201.
A plurality of bulges separating strips 211 are uniformly distributed on the peripheral wall of the rotor punching sheet 21 in an integrated manner, and the space between every two adjacent bulges separating strips 211 is a magnetic steel mounting separating groove 201.
The rotating shaft 1 is provided with an integrally formed positioning convex key 103 along the length direction thereof, the wall of the hole opening of the sleeving hole 212 of each rotor punching sheet 21 is provided with a positioning notch 2121, and the positioning notch 2121 is arranged on the positioning convex key 103.
The thickness of the magnetic steel band 5 is 0.2-0.4mm, preferably 0.3mm.
When the motor rotor is installed, the baffle for the first shaft is firstly stacked on the rotating shaft, one side of the baffle for the first shaft is abutted to the shaft shoulder, then the rotor punching sheets are sequentially stacked, and then the first baffle for the shaft is sleeved, so that the first baffle for the shaft is matched with the baffle for the first shaft to clamp the rotor punching sheets on the rotor and fix the rotor punching sheets to form the rotor core. And then, mounting the magnetic steel and the insulating spacer, sleeving a magnetic steel hoop, pouring an adhesive layer into a gap between the magnetic steel hoop and the magnetic steel, sleeving a baffle plate for a second shaft, matching the baffle plate for the second shaft with the baffle plate for the first shaft to clamp and fix the magnetic steel hoop, the magnetic steel and the insulating spacer between the baffle plate for the second shaft and the baffle plate for the first shaft, positioning the baffle plate for the second shaft on the rotating shaft by using a retaining ring for the second shaft, and forming the permanent magnet rotor into a closed whole.
Therefore, the utility model discloses a fixed process convenient and fast is bonded to the electric motor rotor magnet steel, and not only easy operation is practical. Because the magnetic steel is fixed by using the magnetic steel hoop (the thickness is only 0.3 mm) which is smaller than the air gap of the binding process (the minimum thickness after binding processing is 1.5 mm) used by the original motor rotor magnetic steel, the magnetic performance is improved, and the used magnetic steel material only uses two thirds of the magnetic steel material of the original process, thereby saving the cost. And the strength of the magnetic steel hoop used by the rotor is 5 times higher than that of the original binding material, so that the performance and reliability of the motor are greatly improved, and when n =10000r/min through an overspeed test, the rotor operates stably for 30 minutes without deformation.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention 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 (9)
1. A permanent magnet motor rotor structure, comprising:
a rotating shaft (1);
the rotor core (2) is sleeved on the rotating shaft (1), and a plurality of magnetic steel mounting separation grooves (201) which are arranged at intervals are uniformly distributed on the rotor core (2);
a plurality of magnetic steels (3), wherein the magnetic steels (3) are respectively embedded in the corresponding magnetic steel mounting isolation grooves (201);
the insulating spacers (4) are multiple, and are respectively embedded between two adjacent magnetic steels (3);
the magnetic steel hoop (5), the magnetic steel hoop (5) is sleeved on the outer ring of the magnetic steel (3), and a gap between the magnetic steel hoop (5) and the magnetic steel (3) is filled with an adhesive layer (6).
2. A rotor structure for a permanent magnet motor according to claim 1, wherein a shoulder (101) is provided on the rotating shaft (1) near one end thereof, further comprising:
the baffle (7) for the first shaft is sleeved at one end of the rotating shaft (1), and one side of the baffle (7) for the first shaft is abutted against the shaft shoulder (101);
the rotor core (2) is clamped between the first shaft baffle (7) and the first shaft retainer ring (8);
the baffle (9) for the second shaft is sleeved at the other end of the rotating shaft (1), and one side of the baffle (9) for the second shaft is stopped at one side, away from the rotor core (2), of the first shaft retainer ring (8);
retaining ring (10) is used to the second shaft, retaining ring (10) suit is in for the second shaft pivot (1) other end, just retaining ring (10) one side backstop is used to the second shaft in baffle (9) are kept away from the opposite side of first baffle for the shaft (8), baffle (7) is used to the first shaft with baffle (9) are located for the second shaft the both ends of magnet steel hoop (5), magnet steel (3) magnet steel hoop (5) insulating parting bead (4) press from both sides are established baffle (7) is used to the first shaft with between baffle (9) are used to the second shaft.
3. The rotor structure of the permanent magnet motor according to claim 2, wherein the positions of the first shaft retainer ring (8) and the second shaft retainer ring (10) on the rotating shaft (1) are respectively provided with a retainer ring groove (102), and the first shaft retainer ring (8) and the second shaft retainer ring (10) are respectively embedded in the corresponding retainer ring grooves (102).
4. The rotor structure of the permanent magnet motor according to claim 2, wherein the rotor core (2) comprises a plurality of rotor sheets (21), the rotor sheets (21) are sequentially sleeved on the rotating shaft (1) and respectively clamped between the first shaft baffle (7) and the first shaft retainer ring (8), and each rotor sheet (21) is provided with the magnetic steel mounting spacer groove (201).
5. The permanent magnet motor rotor structure according to claim 4, wherein a plurality of protruding separation bands (211) are uniformly distributed on the outer peripheral wall of the rotor punching sheet (21) in an integrated manner, and a space between every two adjacent protruding separation bands (211) is the magnetic steel installation separation groove (201).
6. The rotor structure of the permanent magnet motor according to claim 4, wherein the rotating shaft (1) is provided with an integrally formed positioning convex key (103) along the length direction thereof, the wall of the hole of the sleeving hole (212) of each rotor punching sheet (21) is provided with a positioning notch (2121), and the positioning notch (2121) is arranged on the positioning convex key (103).
7. A rotor structure of a permanent magnet motor according to any of claims 1-6, characterized in that the magnetic steel (3) is bonded in the magnetic steel mounting compartment (201).
8. A rotor structure for a permanent-magnet machine according to any of claims 1-6, characterised in that the thickness of the magnetic steel hoop (5) is 0.2-0.4mm.
9. A rotor structure for a permanent-magnet machine according to claim 8, characterised in that the thickness of the said magnetic steel band (5) is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222898898.1U CN218633494U (en) | 2022-11-01 | 2022-11-01 | Permanent magnet motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222898898.1U CN218633494U (en) | 2022-11-01 | 2022-11-01 | Permanent magnet motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218633494U true CN218633494U (en) | 2023-03-14 |
Family
ID=85475275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222898898.1U Active CN218633494U (en) | 2022-11-01 | 2022-11-01 | Permanent magnet motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218633494U (en) |
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2022
- 2022-11-01 CN CN202222898898.1U patent/CN218633494U/en active Active
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