CN219304662U - Magnetic steel assembly tool for built-in permanent magnet motor - Google Patents
Magnetic steel assembly tool for built-in permanent magnet motor Download PDFInfo
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- CN219304662U CN219304662U CN202320345277.2U CN202320345277U CN219304662U CN 219304662 U CN219304662 U CN 219304662U CN 202320345277 U CN202320345277 U CN 202320345277U CN 219304662 U CN219304662 U CN 219304662U
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- magnetic steel
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- permanent magnet
- cover plate
- magnet motor
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 110
- 239000010959 steel Substances 0.000 title claims abstract description 110
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract description 15
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 9
- 230000006872 improvement Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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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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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a magnetic steel assembly tool for a built-in permanent magnet motor, relates to the technical field of motor magnetic steel assembly, and is mainly used for solving the problem that a strong repulsive force exists between adjacent magnetic steels in the same magnetic steel groove which are sequentially inserted at present, and the magnetic steels are easy to separate from a rotor core during assembly. The main structure is as follows: the magnetic steel groove clamping device comprises a bottom plate, a positioning shaft and a cover plate which are coaxially and sequentially arranged, wherein the bottom plate is detachably and fixedly connected with the cover plate through a locking assembly, a plurality of mounting through holes corresponding to the magnetic steel groove are formed in the surface of the cover plate, and a pressing assembly is arranged above each mounting through hole. The magnetic steel assembly tool for the built-in permanent magnet motor can prevent the magnetic steel from being separated from the rotor core during assembly, so that the magnetic steel and the magnetic steel can be stably bonded together, and glue liquid in the magnetic steel groove is uniformly distributed.
Description
Technical Field
The utility model relates to the technical field of motor magnetic steel assembly, in particular to a magnetic steel assembly fixture for a built-in permanent magnet motor.
Background
The rotor magnetic circuit structure of the permanent magnet synchronous motor is different, so that the running characteristics, the control system and the like of the motor are also different. Permanent magnet synchronous motors can be largely classified into surface type and built-in type according to the positions of permanent magnets on a rotor. In the built-in permanent magnet synchronous motor, the permanent magnet (magnetic steel) is usually located inside the rotor core, i.e. directly inserted into the magnetic steel groove of the rotor core.
In the existing magnetic steel assembly technology, there are two general arrangement schemes for the magnetic steel inserted in the rotor core: one is to insert a single magnetic steel equal in length into the rotor core; one is to insert a plurality of magnetic steels in the rotor core in sequence. In order to avoid eddy current loss caused by overlong length of the magnetic steel and further reduce the overall efficiency of the motor, a second option is mainly adopted at present.
However, because there is very strong repulsive force between adjacent magnet steels in the same magnet steel groove inserted in turn, the magnet steels are easy to separate from the rotor core during assembly, so that in the subsequent glue injection process, the magnet steels are difficult to be stably bonded together, gaps with different sizes exist between the magnet steels and the magnet steel groove, and glue solution in the magnet steel groove is unevenly distributed.
Disclosure of Invention
The utility model aims to provide a magnetic steel assembly tool for a built-in permanent magnet motor, which can prevent magnetic steel from being separated from a rotor core during assembly, so that the magnetic steel and the magnetic steel can be stably bonded together, and glue liquid in a magnetic steel groove is uniformly distributed.
In order to achieve the above purpose, the utility model provides a magnetic steel assembly fixture for a built-in permanent magnet motor, which comprises a bottom plate, a positioning shaft and a cover plate, wherein the bottom plate, the positioning shaft and the cover plate are coaxially and sequentially arranged from bottom to top, the bottom plate and the cover plate are horizontally arranged, the bottom plate and the cover plate are detachably and fixedly connected through a locking assembly, a plurality of mounting through holes corresponding to magnetic steel grooves are formed in the surface of the cover plate, and a pressing assembly is arranged above each mounting through hole.
As a further improvement of the utility model, the upper plate surface of the bottom plate is also provided with an annular rubber cushion which is arranged around the positioning shaft, and the outer diameter of the annular rubber cushion is larger than that of the rotor core.
As a further improvement of the utility model, the upper plate surface of the bottom plate is provided with a rubber cushion mounting groove for embedded mounting of the annular rubber cushion.
As a further improvement of the utility model, a positioning shaft mounting groove for mounting the positioning shaft in an embedded manner is arranged on the upper plate surface of the bottom plate.
As a further improvement of the utility model, the locking assembly comprises a plurality of edge locking bolts which are vertically arranged, the edge locking bolts sequentially penetrate through the bottom plate and the cover plate from bottom to top, and the edge locking bolts are sequentially arranged along the edge of the cover plate outside the mounting through hole.
As a further development of the utility model, the locking assembly comprises a vertically arranged central locking bolt which passes through the base plate, the positioning shaft and the cover plate in sequence from bottom to top.
As a further development of the utility model, the central locking bolt is arranged coaxially with the positioning shaft.
As a further improvement of the utility model, the pressing component comprises a cushion block which is horizontally arranged, two ends of the cushion block extend to two sides of the mounting through hole and are detachably connected with the plate surface of the cover plate through cushion block mounting screws, and the cushion block is also provided with a magnetic steel pressing screw which vertically penetrates through the cushion block and has the same height as the lower end of the mounting through hole.
As a further improvement of the utility model, the outer wall of the positioning shaft is vertically provided with an iron core mounting groove.
As a further improvement of the utility model, the lower plate surface of the cover plate is provided with an iron core positioning groove.
Compared with the prior art, the magnetic steel assembly tool for the built-in permanent magnet motor has the advantages that:
1. in the device, because the compressing assembly can compress tightly the multistage magnet steel in each magnet steel groove spacing, consequently can prevent that the magnet steel from deviating from the rotor core when the assembly to can eliminate the gap between the magnet steel, and then can make between magnet steel and the magnet steel, between magnet steel and the magnet steel groove all can be in the stable bonding together of follow-up injecting glue in-process, and the glue solution distributes evenly everywhere in the magnet steel groove. Meanwhile, the device can be used for completing the installation of the multi-section magnetic steel in each magnetic steel groove, so that the eddy current loss of the motor caused by the installation of the whole magnetic steel is reduced, and the motor efficiency is improved. And because all be equipped with on each installation opening and compress tightly the subassembly, therefore the device can unify the injecting glue after compressing tightly the multistage magnet steel in each magnet steel groove, has reduced the loaded down with trivial details nature of process.
2. The upper plate surface of the bottom plate is also provided with an annular rubber cushion which is arranged around the positioning shaft, and the outer diameter of the annular rubber cushion is larger than that of the rotor core. The annular rubber cushion on the bottom plate has a sealing function, so that the glue solution can not leak after being injected into the magnetic steel groove.
3. Through the locking of edge locking bolt and center locking bolt, can be with firm centre gripping of rotor core between bottom plate and apron, simple to use, convenient, and the reliability is high.
4. The magnetic steel compression screw vertically penetrates through the cushion block, the lower end of the magnetic steel compression screw is equal to the lower end of the mounting through hole, when the magnetic steel compression screw is locked, the height of the magnetic steel is flush with the surface of the end face of the rotor core, and the consistency of the heights of the magnetic steels is guaranteed.
5. The iron core mounting groove cooperates with the keyway of the rotor core, so that the rotor core can be prevented from axially rotating on the positioning shaft, and the alignment of the magnetic steel groove and the mounting through hole is further affected.
6. The existence of the iron core positioning groove can further ensure the alignment of the magnetic steel groove and the mounting through hole.
The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a state diagram of the present utility model;
FIG. 2 is a view of the utility model in use with only one edge lock bolt and one spacer block installed;
FIG. 3 is a perspective view of the base plate and positioning shaft of the present utility model assembled;
fig. 4 is a vertical cross-section of the utility model in use.
Wherein: 1-a bottom plate; 11-a rubber pad mounting groove; 12-positioning shaft mounting grooves; 2-rubber cushion; 3-positioning the shaft; 31-an iron core mounting groove; 4-cover plate; 41-an iron core positioning groove; 42-mounting through openings; 5-edge lock bolts; 6-a center locking bolt; 7-cushion blocks; 71-cushion block mounting screws; 72-magnetic steel compression screw.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present utility model is conventionally put when used, it is merely for convenience of describing the present utility model and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "horizontal," "vertical," "overhang" and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present utility model, "plurality" means at least 3.
In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Embodiments of the present utility model will now be described with reference to the accompanying drawings.
Examples
The specific embodiment of the utility model is shown in fig. 1-4, and the magnetic steel assembly fixture for the built-in permanent magnet motor comprises a bottom plate 1, a positioning shaft 3 and a cover plate 4 which are coaxially and sequentially arranged from bottom to top, wherein the bottom plate 1 and the cover plate 4 are horizontally arranged, and the bottom plate 1 and the cover plate 4 are detachably locked and connected through a locking assembly. A plurality of mounting through holes 42 corresponding to the magnetic steel grooves are formed in the plate surface of the cover plate 4, and a pressing assembly is arranged above each mounting through hole 42.
When the device is used for assembling the rotor core, the bottom plate 1 is firstly horizontally placed, and the positioning shaft 3 is positioned and installed on the upper plate surface of the bottom plate 1; then, the rotor core is positioned and sleeved on the positioning shaft 3, and the locking assembly is used for locking the bottom plate and the cover plate, so that the clamping and fixing of the rotor core are completed; then, through the mounting through hole 42 reserved on the cover plate 4, the multi-section magnetic steel can be conveniently and sequentially mounted in the magnetic steel groove of the iron core; finally, the multi-section magnetic steel in each magnetic steel groove is pressed and limited by the pressing component, and glue is injected into the magnetic steel groove through the mounting through hole 42, so that the pouring of glue solution is completed.
In the device, because the compressing assembly can compress tightly the multistage magnet steel in each magnet steel groove spacing, consequently can prevent that the magnet steel from deviating from the rotor core when the assembly to can eliminate the gap between the magnet steel, and then can make between magnet steel and the magnet steel, between magnet steel and the magnet steel groove all can be in the stable bonding together of follow-up injecting glue in-process, and the glue solution distributes evenly everywhere in the magnet steel groove. Meanwhile, the device can be used for completing the installation of the multi-section magnetic steel in each magnetic steel groove, so that the eddy current loss of the motor caused by the installation of the whole magnetic steel is reduced, and the motor efficiency is improved. Moreover, as the compressing assemblies are arranged on the mounting through holes 42, the device can uniformly perform glue injection after compressing the multi-section magnetic steel in each magnetic steel groove, and the complexity of the working procedure is reduced.
The upper plate surface of the bottom plate 1 is also provided with an annular rubber cushion 2 which is arranged around the positioning shaft 3, and the outer diameter of the annular rubber cushion 2 is larger than that of the rotor core. The annular rubber cushion 2 on the bottom plate 1 has a sealing function, so that the glue solution can not leak from the contact surface of the bottom plate 1 and the rotor core after the glue is injected into the magnetic steel groove. In this embodiment, in order to install the annular rubber pad 2 conveniently, a rubber pad installation groove 11 for installing the annular rubber pad 2 in an embedded manner is formed in the upper plate surface of the bottom plate 1. Meanwhile, a positioning shaft mounting groove 12 for embedded mounting the positioning shaft 3 is also formed in the upper plate surface of the bottom plate 1. Through the locating shaft mounting groove 12, the locating shaft 3 can be accurately and conveniently located and mounted, the locating shaft 3 can be limited, and the locating shaft 3 is prevented from shaking.
Regarding the locking assembly, the locking assembly comprises a plurality of vertically arranged edge locking bolts 5, the screw ends of the edge locking bolts 5 sequentially penetrate through the bottom plate 1 and the cover plate 4 from bottom to top, and the bottom plate 1 and the cover plate 4 are locked and fixed through nuts. And, a plurality of edge locking bolts 5 are all arranged in sequence along the edge of the cover plate 4 outside the mounting through hole 42. In this embodiment, the locking assembly further comprises a vertically arranged central locking bolt 6, which central locking bolt 6 is arranged coaxially with the positioning shaft 3. And the screw end of the central locking bolt 6 sequentially passes through the bottom plate 1, the positioning shaft 3 and the cover plate 4 from bottom to top, and the bottom plate 1, the positioning shaft 3 and the cover plate 4 are locked and fixed through nuts. Through the locking of edge locking bolt 5 and center locking bolt 6, can be with the firm centre gripping of rotor core between bottom plate 1 and apron 4, simple to use, convenient, and the reliability is high.
With respect to the pressing assembly, the pressing assembly includes a horizontally disposed cushion block 7, and both ends of the cushion block 7 extend to both sides of the mounting opening 42 and are detachably connected to the plate surface of the cover plate 4 by cushion block mounting screws 71. Meanwhile, in order to compress the magnetic steel, the cushion block 7 is further provided with a magnetic steel compressing screw 72 vertically penetrating through the cushion block 7 and having the same height as the lower end of the mounting through hole 42. In this embodiment, the screw end of the magnetic steel pressing screw 72 is flat. The magnetic steel compression screw 72 vertically passes through the cushion block 7, the lower end is equal to the lower end of the mounting through hole 42, and when the magnetic steel compression screw 72 is locked, the magnetic steel height is kept flush with the surface of the end face of the rotor core, so that the consistency of the heights of the magnetic steels is ensured.
In order to position and mount the rotor core, a core mounting groove 31 is vertically provided on the outer wall of the positioning shaft 3. The iron core mounting groove 31 cooperates with the keyway of the rotor core, can avoid the rotor core to appear axial rotation on the locating shaft, and then influences the alignment of magnet steel groove and installation opening. Meanwhile, the lower plate surface of the cover plate 4 is also provided with an iron core positioning groove 41, and the alignment of the magnetic steel groove and the mounting through hole 42 can be further ensured by the existence of the iron core positioning groove 41.
In this embodiment, it should be noted that:
the positioning shaft 3, the edge locking bolt 5, the center locking bolt 6, the cushion block mounting screw 71, the magnetic steel pressing screw 72, the cushion block 7, the bottom plate 1 and the cover plate 4 are all made of nonmagnetic metal materials. The parts are not magnetized, so that magnetic attraction force is not generated between the parts and the magnetic steel, the magnetic steel is ensured to be assembled more safely, no scratch, no impact and no damage are further achieved in the assembly of the magnetic steel of the permanent magnet motor, and the inconsistent magnetic performance and the reduction of the service life of the motor caused by the assembly of the magnetic steel are avoided.
The utility model has been described in connection with the preferred embodiments, but the utility model is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the utility model.
Claims (10)
1. A magnetic steel assembly fixture for a built-in permanent magnet motor is characterized by comprising a bottom plate (1), a positioning shaft (3) and a cover plate (4) which are coaxially and sequentially arranged from bottom to top, wherein the bottom plate (1) and the cover plate (4) are horizontally arranged, the bottom plate (1) and the cover plate (4) are detachably locked and connected through a locking assembly, a plurality of mounting through holes (42) corresponding to magnetic steel grooves are formed in the surface of the cover plate (4), and a compression assembly is arranged above each mounting through hole (42).
2. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 1, wherein an annular rubber pad (2) which is arranged around the positioning shaft (3) is further arranged on the upper plate surface of the bottom plate (1), and the outer diameter of the annular rubber pad (2) is larger than that of the rotor core.
3. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 2, wherein a rubber pad mounting groove (11) for embedded mounting of the annular rubber pad (2) is formed in the upper plate surface of the bottom plate (1).
4. A magnetic steel assembly fixture for a built-in permanent magnet motor according to any one of claims 1-3, wherein a positioning shaft mounting groove (12) for mounting the positioning shaft (3) in an embedded manner is formed in the upper plate surface of the bottom plate (1).
5. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 1, wherein the locking assembly comprises a plurality of edge locking bolts (5) which are vertically arranged, the edge locking bolts (5) sequentially penetrate through the bottom plate (1) and the cover plate (4) from bottom to top, and the edge locking bolts (5) are sequentially arranged along the edge of the cover plate (4) outside the mounting through hole (42).
6. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 1 or 5, wherein the locking assembly comprises a vertically arranged central locking bolt (6), and the central locking bolt (6) sequentially penetrates through the bottom plate (1), the positioning shaft (3) and the cover plate (4) from bottom to top.
7. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 6, wherein the center locking bolt (6) is coaxially arranged with the positioning shaft (3).
8. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 1, wherein the pressing assembly comprises a cushion block (7) horizontally arranged, two ends of the cushion block (7) extend to two sides of the installation through hole (42) and are detachably connected with the plate surface of the cover plate (4) through cushion block installation screws (71), and the cushion block (7) is further provided with a magnetic steel pressing screw (72) vertically penetrating through the cushion block (7) and having the same height as the lower end of the installation through hole (42).
9. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 1, wherein an iron core mounting groove (31) is vertically formed in the outer wall of the positioning shaft (3).
10. The magnetic steel assembly fixture for the built-in permanent magnet motor according to claim 1, wherein an iron core positioning groove (41) is formed in the lower plate surface of the cover plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320345277.2U CN219304662U (en) | 2023-02-28 | 2023-02-28 | Magnetic steel assembly tool for built-in permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320345277.2U CN219304662U (en) | 2023-02-28 | 2023-02-28 | Magnetic steel assembly tool for built-in permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN219304662U true CN219304662U (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320345277.2U Active CN219304662U (en) | 2023-02-28 | 2023-02-28 | Magnetic steel assembly tool for built-in permanent magnet motor |
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| CN (1) | CN219304662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707246A (en) * | 2023-08-01 | 2023-09-05 | 佛山仙湖实验室 | Device and method for assembling rotor magnetic steel of tangential magnetic circuit permanent magnet motor |
-
2023
- 2023-02-28 CN CN202320345277.2U patent/CN219304662U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707246A (en) * | 2023-08-01 | 2023-09-05 | 佛山仙湖实验室 | Device and method for assembling rotor magnetic steel of tangential magnetic circuit permanent magnet motor |
| CN116707246B (en) * | 2023-08-01 | 2023-12-19 | 佛山仙湖实验室 | A tangential magnetic circuit permanent magnet motor rotor magnet assembly device and method |
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