CN209389893U - A kind of birotor permanent magnetic synchronous electric motor rotor fixed structure - Google Patents
A kind of birotor permanent magnetic synchronous electric motor rotor fixed structure Download PDFInfo
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- CN209389893U CN209389893U CN201920254893.0U CN201920254893U CN209389893U CN 209389893 U CN209389893 U CN 209389893U CN 201920254893 U CN201920254893 U CN 201920254893U CN 209389893 U CN209389893 U CN 209389893U
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- bearing
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- convex platform
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- annular convex
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Abstract
The utility model discloses a kind of birotor permanent magnetic synchronous electric motor rotor fixed structures, stator core including annular, the side end face part circumferentia of the stator core one annular convex platform along axial extension, the annular convex platform inner hole is nested with concentric inner bearing, and circumferentially outer end face fixing sleeve is equipped with concentric outer bearing；Inner shaft bearing outer-ring outer diameter is identical as annular convex platform internal diameter and the two contact surface is fixedly connected, and inner bearing inner ring internal diameter is less than stator core internal diameter；Outer bearing inner ring internal diameter is identical as annular convex platform outer diameter and the two contact surface is fixedly connected, and outer shaft bearing outer-ring outer diameter is greater than stator core outer diameter.The application's has the beneficial effect that by being equipped with interior outer bearing on stator core, in conjunction with the connection type of inner and outer rotors and end cap in original design, realize the dual-gripper rotation of inner and outer rotors, the axis of rotation of the inner and outer rotors effectively guaranteed is always positioned at the electric machine rotational axis heart of setting, the specification selection of outer bearing guarantees that air gap is uniform always in simultaneously, and motor operation is stablized.
Description
Technical field
The utility model relates to a kind of birotor permanent magnetic synchronous electric motor rotor fixed structures, belong to design of electrical motor and manufacture skill
Art field.
Background technique
With the development of science and technology, development of modern industry level is higher and higher, requirement of the people for motor performance
In the continuous improvement.Magneto is one kind of synchronous motor, and excitation field has permanent magnet generation, eliminates excitation loss,
Improve the utilization rate and conversion ratio of energy.
China Patent Publication No. is a kind of Circular Winding birotor permanent magnetic synchronous motor of CN208028753U, including inside and outside
Two rotors, Circular Winding is placed in inner and outer rotors centre, in same input voltage and input current, that is, identical feelings of power input power
Efficient energy conversion is higher under condition, is capable of providing bigger torque.And the motor has small in size, high efficiency, power factor is high,
The advantages that perfect heat-dissipating.But the motor inner and outer rotors, by the bearing rotation connection in one side end cap of motor, stability is inadequate.
In motor operation, it is possible that the case where practical axis of rotation of inner and outer rotors deviates the electric machine rotational axis heart of setting, causes
Non-uniform air-gap, so that the air gap flux density of motor is influenced, to cause the irregular operation of motor.
Utility model content
In order to overcome drawbacks described above, it is coaxial that the utility model provides a kind of guarantee when effectively inner and outer rotors being kept to rotate
Degree and the stable uniform birotor permanent magnetic synchronous electric motor rotor fixed structure of air gap.
To achieve the goals above, the technical solution of the utility model are as follows: a kind of birotor permanent magnetic synchronous electric motor rotor is solid
Determine structure, the stator core including annular, the side end face part circumferentia of the stator core one ring along axial extension
Shape boss, the annular convex platform inner hole are nested with concentric inner bearing, and circumferentially outer end face fixing sleeve is equipped with concentric outer bearing；It is described
Inner shaft bearing outer-ring outer diameter is identical as annular convex platform internal diameter and the two contact surface is fixedly connected, and the inner bearing inner ring internal diameter is less than fixed
Sub- iron core internal diameter；The outer bearing inner ring internal diameter is identical as annular convex platform outer diameter and the two contact surface is fixedly connected, the outer shaft
Bearing outer-ring outer diameter is greater than stator core outer diameter.
Preferably, the contact surface is fixedly connected as interference fit and is fixedly connected with or is adhesively fixed connection.
When practical application, outer rotor is set to stator core outer ring, is connected by outer bearing and stator core rotation
It connects, and is rotatablely connected by outer bearing and side bearing with end cover, the air gap thickness between outer rotor and stator core is outer
Bearing outside diameter is greater than the difference distance of stator core outer diameter；Internal rotor is set to stator core inner ring, passes through inner bearing and stator
Iron core rotation connection, and be rotatablely connected by inner bearing and side bearing with end cover, the air gap between internal rotor and stator core
Thickness is the difference distance that inner bearing internal diameter is less than stator core internal diameter.
Those skilled in the art should reasonably select annular convex platform it is known that according to the size of design of electrical motor specification
Length is protruded, while the outer bearing of suitable dimension and inner bearing being selected to be used to guarantee inner and outer rotors and stator iron according to the design needs
The structure of air gap thickness and other undocumented birotor permanent magnetic synchronous motors between core, belongs to those skilled in the art
The conventional means and common sense of member, the application omit its specific descriptions and attached drawing.
The application's has the beneficial effect that by being equipped with interior outer bearing on stator core, in conjunction with inside and outside turn in original design
The connection type of son and end cap, realizes the dual-gripper rotation of inner and outer rotors, and the axis of rotation of the inner and outer rotors effectively guaranteed begins
Final position is in the electric machine rotational axis heart of setting, while the specification selection of interior outer bearing guarantees that air gap is uniform always, and motor operation is stablized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the cross-sectional view of Fig. 1.
Fig. 3 is the stator core construction schematic diagram of the utility model.
Specific embodiment
The technical solution of the utility model will be clearly and completely described below, it is clear that described embodiment is
The utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the utility model protection
Range.
Embodiment 1
As shown in Figure 1-Figure 3, a kind of birotor permanent magnetic synchronous electric motor rotor fixed structure, the stator core including annular
001, the side end face part circumferentia of the stator core 001 one annular convex platform 003, convex annular along axial extension
003 inner hole of platform is nested with concentric inner bearing 004, and circumferentially outer end face fixing sleeve is equipped with concentric outer bearing 002；The inner bearing
004 outer ring outer diameter is identical as 003 internal diameter of annular convex platform and the two contact surface is fixedly connected, and the 004 inner ring internal diameter of inner bearing is small
In 001 internal diameter of stator core；The 002 inner ring internal diameter of outer bearing is identical as 003 outer diameter of annular convex platform and the two contact surface is fixed
Connection, the 002 outer ring outer diameter of outer bearing are greater than 001 outer diameter of stator core.
In order to guarantee the bond strength of interior outer bearing (004,002) and annular convex platform 003, contact surface is fixedly connected as interference
Cooperation is fixedly connected with or is adhesively fixed connection.
When practical application, outer rotor is set to 001 outer ring of stator core, passes through outer bearing 002 and stator core
001 rotation connection, and be rotatablely connected by outer bearing 002 and side bearing with end cover, between outer rotor and stator core 001
Air gap thickness is the difference distance that 002 outer diameter of outer bearing is greater than stator core outer diameter 001；Internal rotor is set to stator core
001 inner ring is rotatablely connected by inner bearing 004 and stator core 001, and is forwarded by inner bearing 004 with side end-cover axle
Dynamic connection, the air gap thickness between internal rotor and stator core 001 are that 004 internal diameter of inner bearing is less than 001 internal diameter of stator core
Difference distance.
Those skilled in the art should reasonably select annular convex platform 003 it is known that according to the size of design of electrical motor specification
Protrusion length, while according to the design needs select suitable dimension outer bearing 002 and inner bearing 004 be used to guarantee inner and outer rotors
The structure of air gap thickness and other undocumented birotor permanent magnetic synchronous motors between stator core, belongs to ability
The conventional means and common sense of field technique personnel, the application omit its specific descriptions and attached drawing.
The limitation that the technical solution of the utility model is not limited to the above specific embodiments, all skills according to the present utility model
The technology deformation that art scheme is made, each falls within the protection scope of the utility model.
Claims (2)
1. a kind of birotor permanent magnetic synchronous electric motor rotor fixed structure, the stator core including annular, it is characterised in that: described fixed
The side end face part circumferentia of sub- iron core one annular convex platform, annular convex platform inner hole along axial extension are nested with one heart
Inner bearing, circumferentially outer end face fixing sleeve are equipped with concentric outer bearing；The inner shaft bearing outer-ring outer diameter is identical as annular convex platform internal diameter
And the two contact surface is fixedly connected, the inner bearing inner ring internal diameter is less than stator core internal diameter；The outer bearing inner ring internal diameter with
Annular convex platform outer diameter is identical and the two contact surface is fixedly connected, and the outer shaft bearing outer-ring outer diameter is greater than stator core outer diameter.
2. a kind of birotor permanent magnetic synchronous electric motor rotor fixed structure according to claim 1, it is characterised in that: described to connect
Contacting surface is fixedly connected as interference fit and is fixedly connected with or is adhesively fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920254893.0U CN209389893U (en) | 2019-02-28 | 2019-02-28 | A kind of birotor permanent magnetic synchronous electric motor rotor fixed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920254893.0U CN209389893U (en) | 2019-02-28 | 2019-02-28 | A kind of birotor permanent magnetic synchronous electric motor rotor fixed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209389893U true CN209389893U (en) | 2019-09-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920254893.0U Expired - Fee Related CN209389893U (en) | 2019-02-28 | 2019-02-28 | A kind of birotor permanent magnetic synchronous electric motor rotor fixed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209389893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742917A (en) * | 2019-02-28 | 2019-05-10 | 郑州大学 | A kind of birotor permanent magnetic synchronous electric motor rotor fixed structure |
-
2019
- 2019-02-28 CN CN201920254893.0U patent/CN209389893U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742917A (en) * | 2019-02-28 | 2019-05-10 | 郑州大学 | A kind of birotor permanent magnetic synchronous electric motor rotor fixed structure |
| CN109742917B (en) * | 2019-02-28 | 2024-07-16 | 郑州大学 | Rotor fixing structure of double-rotor permanent magnet synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |