CN114598064A - Birotor mechanism and novel asynchronous machine suitable for electricity main shaft - Google Patents
Birotor mechanism and novel asynchronous machine suitable for electricity main shaft Download PDFInfo
- Publication number
- CN114598064A CN114598064A CN202210275951.4A CN202210275951A CN114598064A CN 114598064 A CN114598064 A CN 114598064A CN 202210275951 A CN202210275951 A CN 202210275951A CN 114598064 A CN114598064 A CN 114598064A
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- Prior art keywords
- holes
- circle
- rotor
- conducting bar
- rotor body
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 230000005611 electricity Effects 0.000 title description 2
- 230000009977 dual effect Effects 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/18—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having double-cage or multiple-cage rotors
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a double-rotor mechanism suitable for an electric spindle and a novel asynchronous motor, wherein the double-rotor mechanism comprises: the rotor comprises a rotor body and end rings arranged at two ends of the rotor body, wherein a circle of first through holes and a circle of second through holes are uniformly distributed on the circumference of the rotor body, the circle of first through holes is positioned outside the outermost ring of second through holes, the number of the circle of first through holes is the same as that of the circle of second through holes, first guide bars connected with two end rings are arranged in the first through holes, and second guide bars connected with the two end rings are also arranged in the second through holes; by adopting the technical scheme, at least one circle of second through holes are arranged in one circle of first through holes on the rotor body, and the conducting bars are arranged in the first through holes and the second through holes.
Description
Technical Field
The invention relates to the technical field of motor correlation, in particular to a double-rotor mechanism suitable for an electric spindle, and further relates to a novel asynchronous motor.
Background
The motor is a machine for converting electric energy into kinetic energy; the motor has wide application and mature manufacturing process. With the improvement of the technology and the change of the production conditions, the requirement of a customer on the power torque of the motor is higher, but the change of the size of the whole structure of the electric spindle is not desired, so that the power density of the existing motor must be improved, the power density of the motor is improved under the condition of size limitation, the common method is to redesign the motor and change the whole scheme, but the improvement range of the power density is limited, and the investment cost is large because the mold and the tool are required to be opened and designed again. How to realize the technical problem that the power and the torque of the motor are required to be improved under the condition that the original motor scheme is not changed.
Disclosure of Invention
In order to overcome the technical defects in the prior art, the present invention aims to provide a dual-rotor mechanism suitable for an electric spindle to solve the technical problems.
The technical scheme adopted by the invention for solving the technical problem is as follows:
according to one aspect of the present invention, a dual rotor mechanism for an electric spindle is provided, including: the rotor comprises a rotor body and end rings arranged at two ends of the rotor body, wherein a circle of first through holes and a circle of second through holes are uniformly distributed on the circumference of the rotor body, the circle of first through holes are positioned outside the outermost ring of second through holes, the number of the circle of first through holes is the same as that of the circle of second through holes, first guide bars connected with the two end rings are arranged in the first through holes, and second guide bars connected with the two end rings are also arranged in the second through holes.
By adopting the technical scheme, at least one circle of second through holes are arranged in a circle of first through holes on the rotor body, and conducting bars are arranged in the first through holes and the second through holes, when a stator coil is electrified in the running process of the motor, induction current is generated in the circle of first conducting bars, and the stator magnetic field and a first group of rotor magnetic fields formed by the circle of first conducting bars interact to generate power P1; and simultaneously, induction current is generated in the circle of second conducting bars, the stator magnetic field and a second group of rotor magnetic fields formed by the circle of second conducting bars interact to generate power P2, and according to the superposition principle, the final ideal composite power P is as follows: P-P1 + P2, whereby the power and torque of the motor can be boosted; by controlling the number of the circle of first through holes to be the same as that of the circle of second through holes, the induced current generated by the stator magnetic field on the circle of first conducting bars can be ensured to be the same as that generated by the circle of second conducting bars in frequency, and the power superposition effect is ensured; under the condition that the original motor scheme is basically unchanged, the power and the torque of the motor can be improved by adding at least one circle of second through holes and arranging the second conducting bars in the second through holes, scheme design does not need to be carried out again, mold opening cost is greatly reduced again, and the original motor production process is basically not changed.
In order to better solve the technical defects, the invention also has a better technical scheme that:
in some embodiments, an extension line of a connecting line of a center point of each first conducting bar and a center point of a second conducting bar which is closer to the first conducting bar may intersect with a center line of the rotor body. Thereby, the power superposition effect is further improved.
In some embodiments, the rotor body has a circular or elliptical or quadrangular or pentagonal or hexagonal cross section, and is formed by stacking a plurality of silicon steel sheets or integrally formed by cast iron.
In some embodiments, the cross section of each of the first conducting bar and the second conducting bar is circular, oval, gourd-shaped, teardrop-shaped, quadrilateral, pentagonal or hexagonal, and the outer size of the cross section of the first conducting bar is larger than that of the cross section of the second conducting bar. Therefore, the first conducting bar and the second conducting bar in the circle are similar on the harmonic wave, and stable operation is guaranteed, otherwise, extra vibration is caused under the condition that the harmonic wave magnetic field is inconsistent.
In some embodiments, the first and second bars and the end ring are cast as one piece with the rotor body using aluminum or copper.
In some embodiments, the first and second bars and the end ring are cast as one piece with the rotor body using an alloy.
According to another aspect of the invention, a novel asynchronous machine is designed, which comprises the double-rotor mechanism suitable for the electric spindle.
Drawings
Fig. 1 is a schematic structural view of a dual rotor mechanism for an electric spindle according to an embodiment of the present invention;
fig. 2 is an exploded view of a dual rotor mechanism for an electric spindle;
fig. 3 is a schematic longitudinal sectional view of a dual rotor mechanism for an electric spindle;
fig. 4 is a schematic cross-sectional view of a dual rotor mechanism for an electric spindle;
fig. 5 is a schematic cross-sectional view of a first conducting bar and a second conducting bar of a dual-rotor mechanism for an electric spindle;
reference numerals are as follows:
1. a rotor body; 11. a first through hole; 12. a second through hole; 13. a first conducting bar; 14. a second conducting bar; 2. and an end ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example one
Referring to fig. 1 to 5, the present invention provides a dual rotor mechanism for an electric spindle, including: a rotor body 1 and end rings 2 provided at both ends of the rotor body 1.
The cross section of the rotor body 1 is circular, oval, quadrilateral, pentagonal or hexagonal, but the cross section is not limited to the shapes, and the rotor body can also be in other shapes, and is formed by overlapping a plurality of silicon steel sheets, or is integrally formed by cast iron, and the cross section of the rotor body 1 is preferably circular in the embodiment and is formed by overlapping a plurality of circular silicon steel sheets.
The middle of the rotor body 1 is provided with a through hole, a circle of first through holes 11 and at least a circle of second through holes 12 are uniformly distributed on the circumference of the rotor body 1, the circle of first through holes 11 is located on the outer side of the outermost circle of second through holes 12, further, the second through holes 12 can be arranged in one circle or two circles or three circles, the second through holes 12 are preferably arranged in one circle, and the circle of first through holes 11 is located on the outer side of the circle of second through holes 12.
The number of the circles of first through holes 11 is the same as the number of the circles of second through holes 12.
The first through hole 11 is internally provided with a first guide bar 13 connected with the two end rings 2, and the second through hole 12 is also internally provided with a second guide bar 14 connected with the two end rings 2.
The cross sections of the first conducting bar 13 and the second conducting bar 14 are circular, oval, gourd-shaped, tear-drop-shaped, quadrilateral, pentagon or hexagon, but the cross sections are not limited to these shapes, and can be other shapes, and the outer contour size of the cross section of the first conducting bar 1 is larger than that of the cross section of the second conducting bar 14, and the cross sections of the first conducting bar 13 and the second conducting bar 14 are preferably circular in this embodiment.
An extension line L1 connecting the center point of each first conducting bar 13 with the center point of the second conducting bar 14 closer thereto may intersect with the center line Z1 of the rotor body 1.
The first conducting bar 13, the second conducting bar 14 and the end ring 2 are made of aluminum, copper, aluminum alloy or copper-aluminum alloy, but not limited to these materials, and may also be made of other materials, and the first conducting bar 13, the second conducting bar 14 and the end ring 2 are cast integrally with the rotor body 1, and in this embodiment, it is preferable that the first conducting bar 13, the second conducting bar 14 and the end ring 2 are made of aluminum and cast integrally with the rotor body 1.
Example two
The invention provides a double-rotor mechanism suitable for an electric spindle, which comprises the double-rotor mechanism suitable for the electric spindle in the first embodiment.
The above description is only for the embodiments of the present invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
1. A dual rotor mechanism adapted for use with an electric spindle, comprising: the rotor comprises a rotor body and end rings arranged at two ends of the rotor body, wherein a circle of first through holes and at least a circle of second through holes are uniformly distributed on the circumference of the rotor body, the circle of first through holes are positioned outside the outermost circle of second through holes, the number of the circle of first through holes is the same as that of the circle of second through holes, first guide bars connected with the two end rings are arranged in the first through holes, and second guide bars connected with the two end rings are also arranged in the second through holes.
2. The dual-rotor mechanism for electric spindle of claim 1, wherein the extension line of the line connecting the center point of each first conducting bar and the center point of the second conducting bar near to the first conducting bar intersects with the center line of the rotor body.
3. The dual-rotor mechanism suitable for the electric spindle of claim 1, wherein the cross section of the rotor body is circular, elliptical, quadrilateral, pentagonal or hexagonal, and is formed by overlapping a plurality of silicon steel sheets, or is integrally formed by cast iron.
4. The dual-rotor mechanism for the electric spindle of claim 1, wherein the cross section of the first conducting bar and the cross section of the second conducting bar are circular, oval, gourd-shaped, teardrop-shaped, quadrilateral, pentagon or hexagon, and the outer dimension of the cross section of the first conducting bar is larger than that of the cross section of the second conducting bar.
5. The dual rotor mechanism for an electric spindle of claim 1, wherein the first conducting bars, the second conducting bars and the end rings are cast integrally with the rotor body using aluminum or copper.
6. The dual-rotor mechanism for an electric spindle of claim 1, wherein the first conducting bar, the second conducting bar and the end ring are cast integrally with the rotor body by using an alloy.
7. A novel asynchronous machine comprising a double rotor mechanism adapted to an electric spindle according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210275951.4A CN114598064A (en) | 2022-03-21 | 2022-03-21 | Birotor mechanism and novel asynchronous machine suitable for electricity main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210275951.4A CN114598064A (en) | 2022-03-21 | 2022-03-21 | Birotor mechanism and novel asynchronous machine suitable for electricity main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114598064A true CN114598064A (en) | 2022-06-07 |
Family
ID=81811052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210275951.4A Withdrawn CN114598064A (en) | 2022-03-21 | 2022-03-21 | Birotor mechanism and novel asynchronous machine suitable for electricity main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114598064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118631004A (en) * | 2024-05-17 | 2024-09-10 | 长江勘测规划设计研究有限责任公司 | A cascade variable speed micro pumped storage generator motor |
-
2022
- 2022-03-21 CN CN202210275951.4A patent/CN114598064A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118631004A (en) * | 2024-05-17 | 2024-09-10 | 长江勘测规划设计研究有限责任公司 | A cascade variable speed micro pumped storage generator motor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220607 |
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| WW01 | Invention patent application withdrawn after publication |