CN113437811A - High-speed asynchronous motor rotor - Google Patents
High-speed asynchronous motor rotor Download PDFInfo
- Publication number
- CN113437811A CN113437811A CN202110823777.8A CN202110823777A CN113437811A CN 113437811 A CN113437811 A CN 113437811A CN 202110823777 A CN202110823777 A CN 202110823777A CN 113437811 A CN113437811 A CN 113437811A
- Authority
- CN
- China
- Prior art keywords
- cast
- rotor
- aluminum alloy
- rotor core
- aluminum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052802 copper Inorganic materials 0.000 claims abstract description 33
- 239000010949 copper Substances 0.000 claims abstract description 33
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 7
- 239000004917 carbon fiber Substances 0.000 claims abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 7
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 9
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 7
- 230000005484 gravity Effects 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052742 iron Inorganic materials 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
Abstract
The invention discloses a high-speed asynchronous motor rotor, which belongs to the technical field of motors and comprises a rotating shaft and a rotor core, wherein the rotor core is sleeved on the rotating shaft in a hot mode, a cast copper guide bar is cast in the rotor core, aluminum alloy end rings are respectively fixed at two ends of the cast copper guide bar, and a carbon fiber protective ring is sleeved on the outer side of each aluminum alloy end ring. The cast copper conducting bars are integrally cast in the rotor core, no gap exists between the cast copper conducting bars and the rotor core, the problem of high-speed motor vibration caused by the gap is solved, and meanwhile, the temperature rise of the rotor is reduced due to the fact that the resistivity of the cast copper is lower than that of cast aluminum; the end ring is made of the aluminum alloy material with small specific gravity, so that the motor can not generate overlarge centrifugal force when running at high speed, the carbon fiber guard ring is sleeved outside the end ring, and the aluminum alloy end ring and the rotating shaft are subjected to aluminum-iron welding, so that the strength of the rotor is improved.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a high-speed asynchronous motor rotor.
Background
The high-speed asynchronous motor rotor at the present stage mainly comprises a copper bar rotor and a cast aluminum rotor, wherein for the copper bar rotor type motor, a gap between a copper conducting bar and an iron core causes the vibration problem of the high-speed motor, and in addition, because the specific gravity of a copper end ring is large, the motor generates an overlarge centrifugal force during high-speed rotation, and the high-strength requirement of the high-speed motor rotor cannot be met; for a cast aluminum rotor type motor, the electrical resistivity of aluminum is high, so that the motor generates excessive rotor loss, and the requirement of low temperature rise of a rotor of a high-speed motor cannot be met. Therefore, there is a high-speed asynchronous motor rotor that can solve the above-mentioned problems.
Disclosure of Invention
Aiming at the technical problems, the invention provides a high-speed asynchronous motor rotor, which solves the problems of strength, vibration and temperature rise of the high-speed asynchronous motor rotor in the prior art.
The technical scheme of the invention is as follows:
a high-speed asynchronous motor rotor comprises a rotating shaft and a rotor core, wherein the rotor core is sleeved on the rotating shaft in a hot mode, cast copper guide bars are cast in the rotor core, aluminum alloy end rings are fixed at two ends of each cast copper guide bar respectively, and a carbon fiber protective ring is sleeved on the outer side of each aluminum alloy end ring.
Preferably, the cast copper bar is cast integrally in the rotor core.
Preferably, the cast copper conducting bar and the aluminum alloy end ring are fixedly connected through a copper-aluminum welding process.
Preferably, the aluminum alloy end ring and the rotating shaft are fixedly connected through an aluminum-iron welding process.
The invention has the beneficial effects that:
the cast copper conducting bars are integrally cast in the rotor core, and no gap exists between the cast copper conducting bars and the rotor core, so that the problem of vibration of a high-speed motor caused by the gap is solved; the end ring is made of the aluminum alloy material with smaller specific gravity, so that the motor can not generate overlarge centrifugal force when running at high speed; the cast copper conducting bar and the aluminum alloy end ring are fixedly connected through a copper-aluminum welding process, and the cast copper conducting bar and the aluminum alloy end ring are welded in a structural mode, and meanwhile, the resistivity of the cast copper is lower than that of the cast aluminum, so that the motor generates smaller rotor loss, and the rotor temperature rise of the high-speed asynchronous motor is effectively reduced.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention.
Labeled as: 1. a rotating shaft; 2. welding aluminum and iron; 3. an aluminum alloy end ring; 4. a carbon fiber retaining ring; 5. copper-aluminum welding; 6. casting a copper conducting bar; 7. a rotor core is provided.
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.
As shown in fig. 1, a high-speed asynchronous motor rotor includes a rotating shaft 1 and a rotor core 7, the rotor core 7 is shrink-fitted on the rotating shaft 1, cast copper bars 6 are cast in the rotor core 7, the cast copper bars 6 are integrally cast in the rotor core 7, aluminum alloy end rings 3 are respectively fixed at two ends of the cast copper bars 6, a carbon fiber guard ring 4 is sleeved outside each aluminum alloy end ring 3, wherein the cast copper bars 6 and the aluminum alloy end rings 3 are fixedly connected by a copper-aluminum welding 5 process, and the aluminum alloy end rings 3 and the rotating shaft 1 are fixedly connected by an aluminum-iron welding 2 process.
The cast copper conducting bars 6 in the embodiment are integrally cast in the rotor core 7, and no gap exists between the cast copper conducting bars 6 and the rotor core 7, so that the problem of high-speed motor vibration caused by the gap is solved; the end ring in the embodiment is made of the aluminum alloy material with smaller specific gravity, so that the motor can not generate overlarge centrifugal force when running at high speed, the carbon fiber guard ring 4 with smaller specific gravity and higher strength is sleeved outside the end ring, and the aluminum alloy end ring 3 and the rotating shaft 1 are subjected to aluminum-iron welding 2, so that the strength of the rotor is improved; in the embodiment, the cast copper conducting bar 6 and the aluminum alloy end ring 3 are fixedly connected through a copper-aluminum welding 5 process, and the cast copper conducting bar 6 and the aluminum alloy end ring 3 are welded in a structural mode, so that the resistivity of cast copper is lower than that of cast aluminum, and the resistivity of the cast copper conducting bar 6 is lower, so that the motor generates smaller rotor loss, and the rotor temperature rise of the high-speed asynchronous motor is effectively reduced.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (4)
1. The rotor of the high-speed asynchronous motor is characterized by comprising a rotating shaft and a rotor core, wherein the rotor core is sleeved on the rotating shaft in a hot mode, cast copper guide bars are cast in the rotor core, aluminum alloy end rings are fixed at two ends of each cast copper guide bar respectively, and a carbon fiber protective ring is sleeved on the outer side of each aluminum alloy end ring.
2. A rotor for a high speed asynchronous machine according to claim 1, characterized in that said cast copper bars are cast in one piece inside said rotor core.
3. The rotor of a high-speed asynchronous motor as recited in claim 1, wherein said cast copper bars and said aluminum alloy end rings are fixedly attached by a copper-aluminum welding process.
4. The rotor of claim 1, wherein the aluminum alloy end ring and the shaft are fixedly joined by an aluminum-iron welding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823777.8A CN113437811A (en) | 2021-07-21 | 2021-07-21 | High-speed asynchronous motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823777.8A CN113437811A (en) | 2021-07-21 | 2021-07-21 | High-speed asynchronous motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113437811A true CN113437811A (en) | 2021-09-24 |
Family
ID=77761246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110823777.8A Pending CN113437811A (en) | 2021-07-21 | 2021-07-21 | High-speed asynchronous motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113437811A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022208672A1 (en) | 2022-08-22 | 2024-02-22 | Volkswagen Aktiengesellschaft | Rotor for an asynchronous machine with cooling channels, asynchronous machine and motor vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136783A (en) * | 2010-01-21 | 2011-07-27 | 通用汽车环球科技运作有限责任公司 | Methods of manufacturing induction rotors with conductor bars having high conductivity and rotors made thereby |
| CN105529891A (en) * | 2016-01-26 | 2016-04-27 | 河南宝天机电科技有限公司 | Mouse cage for squirrel cage motor |
| CN106230193A (en) * | 2016-08-16 | 2016-12-14 | 中车永济电机有限公司 | Quarry tipper variable-frequency adjustable-speed asynchronous traction motor |
| CN107666224A (en) * | 2017-11-13 | 2018-02-06 | 安徽美芝精密制造有限公司 | Rotor and there is its motor, compressor and refrigeration plant |
| CN112242775A (en) * | 2020-11-30 | 2021-01-19 | 卧龙电气南阳防爆集团股份有限公司 | Box type high-speed motor |
-
2021
- 2021-07-21 CN CN202110823777.8A patent/CN113437811A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136783A (en) * | 2010-01-21 | 2011-07-27 | 通用汽车环球科技运作有限责任公司 | Methods of manufacturing induction rotors with conductor bars having high conductivity and rotors made thereby |
| CN105529891A (en) * | 2016-01-26 | 2016-04-27 | 河南宝天机电科技有限公司 | Mouse cage for squirrel cage motor |
| CN106230193A (en) * | 2016-08-16 | 2016-12-14 | 中车永济电机有限公司 | Quarry tipper variable-frequency adjustable-speed asynchronous traction motor |
| CN107666224A (en) * | 2017-11-13 | 2018-02-06 | 安徽美芝精密制造有限公司 | Rotor and there is its motor, compressor and refrigeration plant |
| CN112242775A (en) * | 2020-11-30 | 2021-01-19 | 卧龙电气南阳防爆集团股份有限公司 | Box type high-speed motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022208672A1 (en) | 2022-08-22 | 2024-02-22 | Volkswagen Aktiengesellschaft | Rotor for an asynchronous machine with cooling channels, asynchronous machine and motor vehicle |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210924 |
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| RJ01 | Rejection of invention patent application after publication |