CN213602468U - Motor rotor end plate and motor rotor - Google Patents
Motor rotor end plate and motor rotor Download PDFInfo
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- CN213602468U CN213602468U CN202022893076.5U CN202022893076U CN213602468U CN 213602468 U CN213602468 U CN 213602468U CN 202022893076 U CN202022893076 U CN 202022893076U CN 213602468 U CN213602468 U CN 213602468U
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Abstract
The utility model belongs to the technical field of the motor, concretely relates to electric motor rotor end plate and electric motor rotor. Rotor shaft need be installed respectively to rotor end plate and clamping ring to current motor for axial fixity rotor punching and magnet steel, assembles comparatively loaded down with trivial details not enough, the utility model discloses a following technical scheme: an electric machine rotor end plate, comprising: an aluminum casting having a central through hole; the nesting piece is positioned in the central through hole, the center of the nesting piece is provided with a close-fitting hole used for being in close-fitting with a rotor shaft of the motor, and the nesting piece is made of steel; wherein, the motor rotor end plate is formed by the cast aluminum piece and the nesting piece in an integrated die-casting mode. The utility model has the advantages that: the rotor end plate is formed by the epoxy resin piece and the nesting piece in advance in a die-casting mode into a whole, when the rotor end plate is assembled with the rotor shaft, the number of parts is less, procedures related to the rotor shaft are reduced, and assembly is simplified.
Description
Technical Field
The utility model belongs to the technical field of the motor, concretely relates to electric motor rotor end plate and electric motor rotor.
Background
The motor rotor core mostly adopts a form that a plurality of rotor punching sheets are overlapped together, and magnetic steel is arranged in the rotor punching sheets. In order to prevent the rotor sheet from generating axial displacement, generally, pressing rings are arranged on two axial outer sides of the rotor sheet, a ring groove is further formed in one of the axial outer sides of the rotor shaft, and a ring key is arranged in the ring groove. In order to prevent the magnetic steel from generating axial displacement or adsorbing external iron parts, a rotor end plate is usually arranged between the rotor punching sheet and the pressing ring. Because the magnetic steel is usually positioned at the edge of the rotor punching sheet, the diameter of the excircle of the rotor end plate is the same as or similar to that of the rotor punching sheet.
When an existing motor rotor is assembled, a first pressing ring and a first rotor end plate are sequentially sleeved on a rotor shaft, the first pressing ring abuts against a step of the rotor shaft, then a rotor punching sheet and the rotor shaft are in interference compression joint, and then a second rotor end plate, a second pressing ring and a ring key are installed on the rotor shaft. Because rotor end plate and clamping ring separately install, it is comparatively loaded down with trivial details to install.
In addition, because the thickness of the end plate of the rotor is limited, generally between 6mm and 12mm, the weight removal is not enough, the dynamic balance effect is not good, and the stability and the safety of the rotor during working are influenced; most of the existing rotor end plates do not have wind blades, the rotor heat dissipation effect is poor, and the magnetic steel is easy to cause high temperature.
Disclosure of Invention
The utility model discloses rotor shaft need be installed respectively to rotor end plate and clamping ring that current motor axial fixity magnet steel was used on, assemble comparatively loaded down with trivial details not enough, provide an electric motor rotor end plate, simplify the assembly. The utility model discloses provide an electron rotor simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric machine rotor end plate, comprising:
an aluminum casting having a central through hole;
the nesting piece is positioned in the central through hole, the center of the nesting piece is provided with a close-fitting hole used for being in close fit with a rotor shaft of the motor, and the nesting piece is a steel piece;
wherein, the motor rotor end plate is formed by the cast aluminum piece and the nesting piece in an integrated die-casting mode.
The rotor end plate of the motor rotor of the utility model is cast by cast aluminum and nested parts into a whole in advance, when the rotor end plate is assembled with the rotor shaft, the number of parts is less, the procedures related to the rotor shaft are reduced, and the assembly is simplified; the nested piece is tightly matched with the rotor shaft, the nested piece can restrain the axial displacement of the magnetic steel in the rotor core, and positioning structures such as positioning pieces do not need to be additionally arranged.
As an improvement, the axial dimension of the nested part is larger than that of the aluminum casting part, and compared with the condition that the axial dimension of the nested part is smaller than that of the aluminum casting part, the matching dimension between the nested part and the aluminum casting part is larger, so that the connection strength between the nested part and the aluminum casting part can be enhanced.
As a refinement, the first side of the nest is flush with the first side of the aluminum casting, and the second side of the nest is convex to the second side of the aluminum casting. The first side of nested spare flushes with the first side of cast aluminium spare, and rotor end plate and rotor core, magnet steel plane laminating.
As an improvement, the first side of the aluminum casting is provided with a groove, and the groove can reduce the material consumption of the epoxy end plate and is beneficial to heat dissipation. The recess has a plurality ofly and equipartition. The groove is arranged at the position avoiding the screw.
As a refinement, the second side of the cast aluminum piece extends to form a balance post. The balance column is used for increasing weight and realizing dynamic balance of the rotor.
As a modification, the second side of the aluminum casting extends to form a convex ring surrounding the central through hole, the second side of the nesting piece protrudes outwards from the convex ring, and the inner diameter of the convex ring is consistent with the aperture of the central through hole.
As a refinement, the second side of the cast aluminum piece extends to form a blade. The function of blade is in the rotatory in-process of rotor, promotes motor heat dispersion. The blades are uniformly distributed.
As an improvement, the nesting piece is provided with a separation prevention structure. To prevent looseness between the nest and the aluminum casting.
As a refinement, the outer periphery of the nest has a first direction thread and a second direction thread, the first direction thread and the second direction thread forming the anti-run-off structure. The arrangement of the first direction threads and the second direction threads ensures complete constraint between the nested part and the aluminum casting, and relative rotation and axial displacement do not occur. In other embodiments, bumps, or the like may be used as the anti-separation structure.
As an improvement, the first direction threads and the second direction threads are respectively positioned at two ends of the nesting piece, and the processing is convenient.
The utility model provides an electric motor rotor, electric motor rotor includes rotor shaft, rotor punching and rotor end plate, the rotor end plate is aforementioned electric motor rotor end plate, electric motor rotor end plate's nested piece with rotor shaft tight fit.
The utility model discloses an electric motor rotor end plate's beneficial effect is: the rotor end plate is formed by die casting an aluminum casting and a nesting piece into a whole in advance, when the rotor end plate is assembled with the rotor shaft, the number of parts is less, the procedures related to the rotor shaft are reduced, and the assembly is simplified; the nested piece is tightly matched with the rotor shaft, the nested piece can restrain the axial displacement of the magnetic steel in the rotor core, and positioning structures such as positioning pieces do not need to be additionally arranged.
The utility model discloses an electric motor rotor adopts the utility model discloses an electric motor rotor end plate has the utility model discloses a whole beneficial effect of electric motor rotor end plate.
Drawings
Fig. 1 and fig. 2 are schematic structural diagrams of different angles of a motor rotor end plate according to a first embodiment of the present invention.
Fig. 3 and 4 are schematic structural diagrams of different angles of the aluminum casting of the motor rotor end plate according to the first embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a nested component of an end plate of a motor rotor according to a first embodiment of the present invention.
In the figure, 1, an aluminum casting; 11. a balancing column; 12. a groove; 13. a central through hole;
2. nesting; 21. a first direction thread; 22. a second direction thread; 23. tightly matching the hole;
3. and (4) screws.
Detailed Description
The technical solutions of the embodiments of the present invention will be explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and are not all embodiments. Other embodiments obtained by persons skilled in the art without any inventive work based on the embodiments in the embodiment belong to the protection scope of the invention.
Referring to fig. 1 to 5, the utility model discloses an electric motor rotor end plate, electric motor rotor end plate includes:
an aluminum casting having a central through hole;
the nesting piece is positioned in the central through hole, the center of the nesting piece is provided with a close-fitting hole used for being in close fit with a rotor shaft of the motor, and the nesting piece is a steel piece;
wherein, the motor rotor end plate is formed by the cast aluminum piece and the nesting piece in an integrated die-casting mode.
Compared with the existing motor, the first clamping ring, the first rotor end plate, the rotor punching sheet, the second rotor end plate, the second clamping ring and the positioning piece are required to be sequentially installed on the motor shaft during assembly, the utility model discloses a motor rotor end plate, its rotor end plate are cast into a whole by cast aluminum and nesting in advance, when the rotor end plate is assembled with the rotor shaft, the number of parts is less, the procedures related to the rotor shaft are reduced, and the assembly is simplified; the nested piece is tightly matched with the rotor shaft, and positioning structures such as positioning pieces do not need to be additionally arranged.
Example one
Referring to fig. 1 to 5, the utility model discloses an electric motor rotor end plate, electric motor rotor end plate includes:
an aluminum casting 1, the aluminum casting 1 having a central through hole 13;
the nest 2 is positioned in the central through hole 13, the center of the nest 2 is provided with a close-fitting hole 23 for close-fitting with a rotor shaft of the motor, and the nest 2 is a steel piece;
wherein, the motor rotor end plate is formed by the cast aluminum part 1 and the nesting part 2 in an integral die-casting mode.
The size of the central through hole 13 of the aluminum casting 1 and the external dimension of the nested 2 can be adjusted according to the die casting process.
In this embodiment, the axial dimension of the nest 2 is greater than the axial dimension of the aluminum casting 1, and compared with the case where the axial dimension of the nest 2 is less than the axial dimension of the aluminum casting 1, the fitting dimension between the nest 2 and the aluminum casting 1 is larger, so that the connection strength between the nest 2 and the aluminum casting 1 can be enhanced.
In this embodiment, the first side of the nest 2 is flush with the first side of the aluminum casting 1, and the second side of the nest 2 protrudes beyond the second side of the aluminum casting 1. The first side of nested 2 and the first side and the rotor core or the magnet steel contact of cast aluminium 1, and the first side of nested 2 flushes with the first side of cast aluminium 1, and the rotor end plate forms the plane laminating with rotor core, magnet steel. The second side of the nested part 2 protrudes out of the second side of the aluminum casting 1, so that the tool is pressed on the nested part 2 in the shaft pressing process, and the stress of the aluminum casting 1 in the shaft pressing process is avoided. The second side of nest 2 may protrude slightly beyond the second side of cast aluminium 1.
In this embodiment, the first side of the aluminum casting 1 forms the groove 12, and the groove 12 can reduce the material usage of the epoxy end plate and is beneficial to heat dissipation. The grooves 12 are distributed in a plurality and are evenly distributed. The grooves 12 are arranged to avoid the bolts 3 to ensure high structural strength of the aluminum casting 1.
In this embodiment, the second side of the aluminum casting 1 extends to form a balance post 11. The balance post 11 is used for increasing weight and realizing dynamic balance of the rotor. The cast aluminum member 1 is directly formed into the balance post 11 when it is integrally formed. The balance post 11 also has a certain heat dissipation effect.
In this embodiment, since the aluminum casting 1 is made of cast aluminum, the heat dissipation performance is good, and thus, it is not necessary to provide a separate blade.
In this embodiment, the nest 2 has a separation prevention structure. To prevent looseness between the nest 2 and the aluminum casting 1.
In this embodiment, the outer periphery of the nest 2 has a first direction thread 21 and a second direction thread 22, and the first direction thread 21 and the second direction thread 22 form the anti-falling structure. The arrangement of the first-direction threads 21 and the second-direction threads 22 ensures that the nesting part 2 and the aluminum casting 1 are completely constrained, and neither relative rotation nor axial displacement occurs.
In other embodiments, bumps, etc. may be used as the anti-separation structure.
In this embodiment, the first direction threads 21 and the second direction threads 22 are respectively located at two ends of the nesting component 2, so that the processing is convenient.
The embodiment of the utility model provides a beneficial effect of electric motor rotor end plate is: the rotor end plate is formed by die casting an aluminum casting 1 and a nesting piece 2 into a whole in advance, when the rotor end plate is assembled with the rotor shaft, the number of parts is less, the procedures related to the rotor shaft are reduced, and the assembly is simplified; the nesting piece 2 is in interference fit with the rotor shaft, and the nesting piece 2 can restrain the axial displacement of the magnetic steel in the rotor core without additionally arranging positioning structures such as positioning pieces and the like; the cast aluminium 1 can be formed directly into the balancing post 11 during the forming.
The utility model provides an electric motor rotor simultaneously, electric motor rotor includes rotor shaft, rotor punching and rotor end plate, the rotor end plate is the electric motor rotor end plate of embodiment one, the nested 2 of electric motor rotor end plate with the rotor shaft tight fit.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto but is intended to cover various modifications and changes, including but not limited to the details shown in the drawings and described in the foregoing detailed description. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the following claims.
Claims (10)
1. An electric motor rotor end plate which characterized in that: the motor rotor end plate includes:
an aluminum casting (1), the aluminum casting (1) having a central through hole (13);
the nest (2) is located in the central through hole (13), the center of the nest (2) is provided with a tight matching hole (23) used for being tightly matched with a rotor shaft of the motor, and the nest (2) is a steel piece;
the motor rotor end plate is formed by integrally die-casting the aluminum casting (1) and the nesting piece (2).
2. An electric machine rotor end plate according to claim 1, wherein: the axial dimension of the nest (2) is greater than the axial dimension of the cast aluminium (1).
3. An electric machine rotor end plate according to claim 2, wherein: the first side of the nest (2) is flush with the first side of the aluminum casting (1), and the second side of the nest (2) protrudes outwards from the second side of the aluminum casting (1).
4. A rotor end plate for an electrical machine according to claim 3, wherein: a first side of the aluminum casting (1) forms a groove (12).
5. A rotor end plate for an electrical machine according to claim 3, wherein: the second side of the aluminum casting (1) extends to form a balance post (11).
6. A rotor end plate for an electrical machine according to claim 3, wherein: the second side of the aluminum casting (1) extends to form a convex ring surrounding the central through hole (13), and the second side of the nesting piece (2) protrudes outwards from the convex ring.
7. An electric machine rotor end plate according to claim 1, wherein: the nesting piece (2) is provided with a separation-preventing structure.
8. An electric machine rotor end plate according to claim 7, wherein: the outer periphery of the nesting piece (2) is provided with a first direction thread (21) and a second direction thread (22), and the first direction thread (21) and the second direction thread (22) form the anti-falling structure.
9. An electric machine rotor end plate according to claim 8, wherein: the first direction thread (21) and the second direction thread (22) are respectively positioned at two ends of the nesting piece (2).
10. The utility model provides an electric motor rotor, electric motor rotor includes rotor shaft, rotor punching and rotor end plate, its characterized in that: the rotor end plate is an electric machine rotor end plate according to any of claims 1 to 9, the nest (2) of the electric machine rotor end plate being a close fit to the rotor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022893076.5U CN213602468U (en) | 2020-12-03 | 2020-12-03 | Motor rotor end plate and motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022893076.5U CN213602468U (en) | 2020-12-03 | 2020-12-03 | Motor rotor end plate and motor rotor |
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| Publication Number | Publication Date |
|---|---|
| CN213602468U true CN213602468U (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022893076.5U Active CN213602468U (en) | 2020-12-03 | 2020-12-03 | Motor rotor end plate and motor rotor |
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| CN (1) | CN213602468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309543A (en) * | 2021-12-07 | 2022-04-12 | 卧龙电气驱动集团股份有限公司 | Production process of induction motor cast-aluminum rotor |
-
2020
- 2020-12-03 CN CN202022893076.5U patent/CN213602468U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309543A (en) * | 2021-12-07 | 2022-04-12 | 卧龙电气驱动集团股份有限公司 | Production process of induction motor cast-aluminum rotor |
| CN114309543B (en) * | 2021-12-07 | 2023-12-05 | 卧龙电气驱动集团股份有限公司 | Production process of cast aluminum rotor of induction motor |
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