CN215419785U - Permanent magnet motor rotor structure - Google Patents
Permanent magnet motor rotor structure Download PDFInfo
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- CN215419785U CN215419785U CN202120413353.XU CN202120413353U CN215419785U CN 215419785 U CN215419785 U CN 215419785U CN 202120413353 U CN202120413353 U CN 202120413353U CN 215419785 U CN215419785 U CN 215419785U
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- iron core
- connecting block
- permanent magnet
- rotor structure
- rotor
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Abstract
The utility model discloses a permanent magnet motor rotor structure, which comprises a rotor support, an iron core, a magnetic steel group, a connecting block and a baffle plate, wherein the iron core is uniformly divided into a plurality of iron core blocks, a plurality of magnetic steels are distributed on the iron core, the magnetic steels are uniformly distributed and arranged at a certain angle along the circumference of the inner side of the iron core, the thickness of the magnetic steel is consistent with that of the iron core, a plurality of dovetail grooves which are uniformly distributed and arranged are arranged on the inner side of the iron core and connected with the upper surface of the connecting block, the iron core is connected with the rotor support through the connecting block, and finally the baffle plate is connected with the connecting block.
Description
Technical Field
The utility model relates to the technical field of permanent magnet motors, in particular to a permanent magnet motor rotor structure.
Background
With the continuous development of the permanent magnet motor technology, especially the characteristics of low rotating speed and large torque gradually receive the popularity of the market, at present, the permanent magnet motor is applied to various industrial fields such as petroleum equipment, mining equipment and the like, a rotor is used as an important component of the permanent magnet motor, and the reasonability of the structural design and the assembly of the rotor has important influence on the stable operation of the permanent magnet motor.
The existing permanent magnet motor rotor structure has two types: surface-mounted; built-in.
The surface-mounted rotor structure is mainly divided into three types: direct surface-mounted type, magnetic steel pressing plate type and groove type with magnetic steel.
The surface-mounted rotor structure is mainly divided into three types: direct surface-mounted type, magnetic steel pressing plate type and groove type with magnetic steel.
The mounting method of the surface-mounted rotor magnetic pole mainly comprises the steps of drilling screw holes in circular arc-shaped magnetic steel, fastening the magnetic steel on the outer surface of a rotor drum in order through screws to form the magnetic pole, gluing after the magnetic steel is mounted, and further sticking and fixing the magnetic steel on the outer surface of the drum.
However, the magnetic steel in the form is complex in processing technology and high in cost. Because the magnetic steel is attached to the outer surface of the rotor winding drum, the inner surface and the outer surface of the magnetic steel are both arc-shaped, the processing is difficult, the magnetic steel material is brittle, the magnetic steel is easy to break when the screw hole is drilled, and the cost is increased.
Disclosure of Invention
The utility model aims to: the permanent magnet motor rotor structure improves the reliability, convenience and firmness of installation of the magnetic steel and the iron core in the manufacturing process of the permanent magnet motor rotor. Meanwhile, the contradiction between the uniformity of magnetic steel distribution and the processing cost is solved.
In order to solve the problems, the permanent magnet motor rotor structure comprises a baffle, an iron core, magnetic steel, a connecting block and a rotor bracket. The iron core is equally divided into a plurality of iron core blocks, after the iron core blocks, the magnetic steel and the connecting block are connected together, the rotor support is sleeved with the iron core, a plurality of uniformly distributed dovetail inlays are arranged on the inner side of the iron core and are connected with dovetail grooves in the connecting block, grooves and through holes which are uniformly distributed are formed in the outer circumferential surface of the rotor support and are used for being fixed with the connecting block, the rotor support is connected and fastened with the connecting block through bolts, and the baffle is in a ring shape and is connected with the side face of the connecting block to finally fix the iron core and the magnetic steel.
The iron core inner ring is provided with evenly distributed dovetail inlays and is used for being fixed with the connecting block.
The connecting block is provided with a dovetail groove for fixing the connecting block with the iron core, and the connecting block is made of a magnetism isolating material.
The external dimension of the magnetic steel can be just positioned by the space formed by the magnetic steel groove on the iron core and the connecting block in the radial direction.
The baffle and the bolt for connecting the baffle are made of magnetism isolating materials.
The inner and outer circumferential surfaces of the rotor support are provided with grooves and through holes which are uniformly distributed and used for being fixed with the connecting block.
Drawings
FIG. 1 and FIG. 2 are schematic structural views of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
fig. 5 is a view showing a structure of a rotor holder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, a rotor structure of a permanent magnet motor comprises a baffle 1, magnetic steel 2, an iron core 3, a connecting block 4 and a rotor bracket 5.
Baffle 1 is the annular plate of circle, installs the side at connecting block 4, prevents that iron core 3 and magnet steel 2 axial float.
The shape of magnet steel 2 is the cuboid, and thickness is unanimous with iron core 3, connects into a complete iron core 3 through magnet steel 2's suction with the iron core piece.
The upper surface of the connecting block 4 is provided with a dovetail groove which is embedded and fixed with the dovetail of the iron core 3, the lower surface of the connecting block is connected and fixed with the rotor bracket through a magnetism isolating screw, and the side surface of the connecting block is fixed with the baffle 1 through a screw.
The outer circumferential surface of the rotor bracket 5 is fixedly connected with the connecting block through a screw, so that the iron core 3 and the magnetic steel 2 are prevented from moving radially.
Claims (5)
1. The utility model provides a permanent-magnet machine rotor structure, which comprises a baffle, the iron core, the magnet steel, the connecting block, rotor support, characterized by iron core is equallyd divide into a plurality of iron core pieces, the iron core piece, the magnet steel, the connecting block links together the back, rotor support is located to relative cover, the iron core inboard is equipped with a plurality of equipartition and arranges the forked tail and inlay, be connected with the dovetail on the connecting block, open the outer peripheral surface of rotor support has evenly distributed's recess and through-hole to be used for fixed with the connecting block, be connected the fastening through bolt and connecting block, the shape of baffle is that a ring shape is connected with the connecting block side, the completion is to the iron core, the final fixed of magnet steel.
2. The rotor structure of a permanent magnet motor according to claim 1, wherein the inner ring of the iron core is provided with evenly distributed dovetails for fixing with the connecting block.
3. The rotor structure of permanent magnet motor according to claim 1, wherein said connecting block is provided with dovetail grooves for fixing with the iron core, and the material is magnetism isolating material.
4. The rotor structure of a permanent magnet motor according to claim 1, wherein the magnetic steel has a size that is exactly radially positioned by a space formed by the magnetic steel slots on the core and the connecting blocks.
5. The rotor structure of a permanent magnet electric machine according to claim 1, wherein said shield and said bolts for connecting said shield are made of a magnetic isolating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120413353.XU CN215419785U (en) | 2021-02-25 | 2021-02-25 | Permanent magnet motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120413353.XU CN215419785U (en) | 2021-02-25 | 2021-02-25 | Permanent magnet motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215419785U true CN215419785U (en) | 2022-01-04 |
Family
ID=79667460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120413353.XU Active CN215419785U (en) | 2021-02-25 | 2021-02-25 | Permanent magnet motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215419785U (en) |
-
2021
- 2021-02-25 CN CN202120413353.XU patent/CN215419785U/en active Active
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