CN211239488U - High-speed permanent magnet motor rotor - Google Patents
High-speed permanent magnet motor rotor Download PDFInfo
- Publication number
- CN211239488U CN211239488U CN202020262161.9U CN202020262161U CN211239488U CN 211239488 U CN211239488 U CN 211239488U CN 202020262161 U CN202020262161 U CN 202020262161U CN 211239488 U CN211239488 U CN 211239488U
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- shaft shoulder
- magnetic
- magnetic steel
- mandrel
- sleeve
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a high-speed permanent-magnet machine rotor relates to the high-speed permanent-magnet machine field. The spindle of a general high-speed permanent magnet motor rotor and the shaft shoulder for axially positioning the magnetic steel are integrated, the same magnetic conductive material is used, and the way can generate magnetic leakage which does not pass through the main magnetic flux of a motor at the position of the shaft shoulder of the rotor, so that the performance of the motor is reduced. The magnetic steel magnetic core comprises a core shaft, and a left shaft shoulder sleeve and a right shaft shoulder sleeve which are arranged on the core shaft and are in threaded fit with the core shaft, wherein magnetic steel is arranged on the outer surface of the core shaft between the left shaft shoulder sleeve and the right shaft shoulder sleeve, a protective sleeve is arranged on the outer side of the magnetic steel, the core shaft is made of a magnetic conductive material, and the left shaft shoulder sleeve and the right shaft shoulder sleeve are made of a non-magnetic conductive material. The shaft shoulder and the mandrel are separated, the mandrel is made of a magnetic conductive material, the shaft shoulder is made of a non-magnetic conductive material, and due to the fact that the transmission path of a leakage magnetic field is weakened, leakage flux can be effectively reduced, reliability of the rotor in a high-speed rotating state is improved, and performance of the motor is improved.
Description
Technical Field
The utility model relates to a high-speed permanent-magnet machine field especially relates to a high-speed permanent-magnet machine rotor.
Background
At present, a general high-speed permanent magnet motor rotor adopts a form that magnetic steel is pasted on the outer wall of a rotor mandrel, the rotor mandrel and a shaft shoulder used for axial positioning of the magnetic steel are integrated, the same magnetic conductive material is used, and the way can generate magnetic leakage which does not pass through the main magnetic flux of a motor at the position of the rotor shaft shoulder and reduce the performance of the motor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model and the technical task who provides are perfect and improve prior art scheme, provide a high-speed permanent-magnet machine rotor to reduce the magnetic leakage, improve the motor performance and be the purpose. Therefore, the utility model adopts the following technical scheme.
A high-speed permanent magnet motor rotor comprises a mandrel, a left shaft shoulder sleeve and a right shaft shoulder sleeve, wherein the left shaft shoulder sleeve and the right shaft shoulder sleeve are arranged on the mandrel, magnetic steel is arranged on the outer surface of the mandrel between the left shaft shoulder sleeve and the right shaft shoulder sleeve, a protective sleeve is arranged on the outer side of the magnetic steel, the mandrel is made of a magnetic conductive material, and the left shaft shoulder sleeve and the right shaft shoulder sleeve are made of a non-magnetic conductive material. The shaft shoulder and the mandrel are separated, the mandrel is made of a magnetic conductive material, the shaft shoulder is made of a non-magnetic conductive material, and due to the fact that the transmission path of a leakage magnetic field is weakened, leakage flux can be effectively reduced, and the performance of the motor is improved.
As a preferable technical means: the left shaft shoulder sleeve and the mandrel and the right shaft shoulder sleeve and the mandrel are matched, connected and fixed through threads. The shaft shoulder is in threaded connection with the rotor mandrel, so that the reliability of the rotor in a high-speed rotating state is improved, meanwhile, the axial pretightening force can be applied to the magnetic steel, and the overall rigidity of the rotor is improved.
As a preferable technical means: the right outer side of the left shaft shoulder sleeve and the left outer side of the right shaft shoulder sleeve are provided with surrounding sheath steps, the step surfaces of the sheath steps are flush with the outer surface of the magnetic steel, the sheath is arranged between the two sheath steps of the left shaft shoulder sleeve and the right shaft shoulder sleeve, and the outer peripheral surfaces of the sheath are flush with the outer peripheral surfaces of the left shaft shoulder sleeve and the right shaft shoulder sleeve. The sheath can effectively be sheathed between the sheath steps, so that the positioning of the sheath is realized, and the magnetic steel can be effectively protected by the sheath.
As a preferable technical means: the left part outside of left axle shoulder cover and the right part outside of right axle shoulder cover be the counter weight global. When the rotor is in dynamic balance, the dynamic balance and weight removal can be carried out on the peripheral surface of the balance weight.
As a preferable technical means: and adhesive glue is coated between the contact surfaces of the magnetic steel and the left shaft shoulder sleeve, and adhesive glue is coated between the magnetic steel and the magnetic steel assembling shaft neck of the mandrel. And the magnetic steel is assembled and fixed.
As a preferable technical means: the axial length of the magnetic steel is larger than that of the magnetic steel assembling shaft neck on the mandrel, so that a gap still exists between the right end of the magnetic steel assembling shaft neck and the left end face of the right shaft shoulder sleeve after the right shaft shoulder sleeve is tightly attached to the magnetic steel left for fixing. The right shaft shoulder sleeve can effectively compress the magnetic steel.
As a preferable technical means: the axial width of the gap between the mandrel and the core shaft is 0.6-1.5 mm. The gap size is reasonable, and the right shaft shoulder sleeve can effectively compress the magnetic steel.
As a preferable technical means: the sheath is formed by binding metal or nonmetal fibers in a surrounding manner and bonding and solidifying the metal or nonmetal fibers by using an adhesive. Effectively realizing the sheath structure.
Has the advantages that: the shaft shoulder is separated from the mandrel, the mandrel is made of a magnetic conductive material, and the shaft shoulder is made of a non-magnetic conductive material, so that the transmission path of a leakage magnetic field is weakened, the leakage magnetic can be effectively reduced, and the performance of the motor is improved; the shaft shoulder is in threaded connection with the rotor mandrel, so that the reliability of the rotor in a high-speed rotating state is improved, meanwhile, the axial pretightening force can be applied to the magnetic steel, and the overall rigidity of the rotor is improved.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
Fig. 2 is a schematic view of the cross-sectional structure of the middle spindle of the present invention.
Fig. 3 is an enlarged schematic view of a portion a of fig. 1 according to the present invention.
Fig. 4 is a schematic sectional view of the middle left shoulder sleeve of the present invention.
In the figure: 1-mandrel; 2-left shaft shoulder sleeve; 3-right shaft shoulder sleeve; 4-magnetic steel; 5-a sheath; 6-clearance; 101-magnetic steel assembling shaft necks; 201-sheath step; 202-counterweight perimeter.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-4, a high-speed permanent magnet motor rotor includes a mandrel 1, a left shoulder sleeve 2 and a right shoulder sleeve 3, which are disposed on the mandrel 1, a magnetic steel 4 is disposed on the outer surface of the mandrel 1 between the left shoulder sleeve 2 and the right shoulder sleeve 3, a sheath 5 is disposed on the outer side of the magnetic steel 4, the mandrel 1 is made of a magnetic conductive material, and the left shoulder sleeve 2 and the right shoulder sleeve 3 are made of a non-magnetic conductive material.
In order to increase the reliability of the rotor in a high-speed rotation state, the left shaft shoulder sleeve 2 and the mandrel 1, and the right shaft shoulder sleeve 3 and the mandrel 1 are connected and fixed in a matching mode through threads. The shaft shoulder is in threaded connection with the rotor mandrel 1, so that the reliability of the rotor in a high-speed rotating state is improved, meanwhile, the axial pretightening force can be applied to the magnetic steel 4, and the overall rigidity of the rotor is improved.
In order to protect the magnetic steel 4, the right outer side of the left shaft shoulder sleeve 2 and the left outer side of the right shaft shoulder sleeve 3 are provided with surrounding sheath steps 201, the step surfaces of the sheath steps 201 are flush with the outer surface of the magnetic steel 4, the sheath 5 is arranged between the two sheath steps 201 of the left shaft shoulder sleeve 2 and the right shaft shoulder sleeve 3, and the outer peripheral surface of the sheath 5 is flush with the outer peripheral surfaces of the left shaft shoulder sleeve 2 and the right shaft shoulder sleeve 3. Sheath 5 can effective sheath 5 locate between sheath step 201, realizes the location of sheath 5, prevents that magnet steel 4 from breaking away from, can effectively protect magnet steel 4.
To achieve dynamic balance weighting, the left outer side of the left shoulder sleeve 2 and the right outer side of the right shoulder sleeve 3 are weighting circumferential surfaces 202. When the rotor is dynamically balanced, dynamic balancing and weight removal can be performed on the weight peripheral surface 202.
In order to realize the assembly and fixation of the magnetic steel 4, adhesive glue is coated between the contact surfaces of the magnetic steel 4 and the left shaft shoulder sleeve 2, and adhesive glue is coated between the magnetic steel 4 and the magnetic steel assembly shaft neck 101 of the mandrel 1. The magnetic steel 4 is assembled and fixed.
In order to realize the compression of the right shaft shoulder sleeve 3 on the magnetic steel 4, the axial length of the magnetic steel 4 is greater than that of the magnetic steel assembling shaft neck 101 on the mandrel 1, so that after the right shaft shoulder sleeve 3 is fixed by being attached to the magnetic steel 4 leftwards, a gap 6 still exists between the right end of the magnetic steel assembling shaft neck 101 and the left end face of the right shaft shoulder sleeve 3. The right shaft shoulder sleeve 3 can effectively compress the magnetic steel 4.
When the rotor is assembled, the left shaft shoulder sleeve 2 is sleeved into the mandrel 1 and screwed and fixed, then the right end face of the left shaft shoulder sleeve 2 and the surface of the magnetic steel assembling shaft neck 101 are coated with glue, then the magnetic steel 4 is attached, the magnetic steel 4 is tightly pressed with the right end face of the left shaft shoulder sleeve 2 and the surface of the magnetic steel assembling shaft neck 101, then the right shaft shoulder sleeve 3 is sleeved into the mandrel 1 from the right side and screwed and fixed, and finally the nonmetal fibers are adopted for surrounding binding and bonding with the adhesive to form the sheath 5.
The shaft shoulder is separated from the mandrel 1, the mandrel 1 is made of a magnetic conductive material, the shaft shoulder is made of a non-magnetic conductive material, and due to the fact that the transmission path of a leakage magnetic field is weakened, leakage flux can be effectively reduced, and the performance of the motor is improved.
In this embodiment, the sheath 5 may be wrapped with metal fibers and bonded by an adhesive instead.
In this example, the gap 6 has an axial width of 1mm in the mandrel 1.
The above embodiments of the present invention, illustrated in fig. 1-4, show the outstanding substantial features and significant improvements of the present invention, and the present invention teaches that the present invention can be modified in the same way as the present invention in the aspects of shape and structure, all within the scope of protection of the present solution.
Claims (8)
1. A high-speed permanent magnet motor rotor is characterized in that: including dabber (1), locate left axle shoulder cover (2) and right axle shoulder cover (3) on dabber (1), dabber (1) outward appearance between left axle shoulder cover (2) and right axle shoulder cover (3) is equipped with magnet steel (4), the magnet steel (4) outside sets up sheath (5), dabber (1) adopt magnetic material, left axle shoulder cover (2) and right axle shoulder cover (3) adopt non-magnetic material.
2. A high speed permanent magnet machine rotor according to claim 1, characterized in that: the left shaft shoulder sleeve (2) and the mandrel (1) and the right shaft shoulder sleeve (3) and the mandrel (1) are connected and fixed in a matching way through threads.
3. A high speed permanent magnet machine rotor according to claim 2, characterized in that: the right part outside of left side axle shoulder cover (2) and the left part outside of right side axle shoulder cover (3) be equipped with encircleed sheath step (201), the step face of sheath step (201) is neat with magnet steel (4) appearance outward, sheath (5) locate between two sheath steps (201) of left side axle shoulder cover (2) and right axle shoulder cover (3), the outer peripheral face of sheath (5) is neat with the outer peripheral face of left side axle shoulder cover (2) and right axle shoulder cover (3).
4. A high speed permanent magnet machine rotor according to claim 3, characterized in that: the outer sides of the left part of the left shaft shoulder sleeve (2) and the right part of the right shaft shoulder sleeve (3) are counterweight circumferential surfaces (202).
5. The high-speed permanent magnet motor rotor of claim 4, wherein: and adhesive glue is coated between the contact surfaces of the magnetic steel (4) and the left shaft shoulder sleeve (2), and adhesive glue is coated between the magnetic steel (4) and the magnetic steel assembling shaft neck (101) of the mandrel (1).
6. The high-speed permanent magnet motor rotor of claim 5, wherein: the axial length of the magnetic steel (4) is greater than that of a magnetic steel assembly shaft neck (101) on the mandrel (1), so that after the right shaft shoulder sleeve (3) is fixed by being attached to the magnetic steel (4) leftwards, a gap (6) still exists between the right end of the magnetic steel assembly shaft neck (101) and the left end face of the right shaft shoulder sleeve (3).
7. The high-speed permanent magnet motor rotor of claim 6, wherein: the axial width of the gap (6) in the mandrel (1) is 0.6-1.5 mm.
8. The high-speed permanent magnet motor rotor of claim 6, wherein: the sheath (5) is bound by metal or nonmetal fibers in a surrounding way and is formed by bonding and solidifying through an adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020262161.9U CN211239488U (en) | 2020-03-05 | 2020-03-05 | High-speed permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020262161.9U CN211239488U (en) | 2020-03-05 | 2020-03-05 | High-speed permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211239488U true CN211239488U (en) | 2020-08-11 |
Family
ID=71923543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020262161.9U Active CN211239488U (en) | 2020-03-05 | 2020-03-05 | High-speed permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211239488U (en) |
-
2020
- 2020-03-05 CN CN202020262161.9U patent/CN211239488U/en active Active
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