CN107370319B - Novel high-starting torque three-phase asynchronous motor - Google Patents
Novel high-starting torque three-phase asynchronous motor Download PDFInfo
- Publication number
- CN107370319B CN107370319B CN201710629286.3A CN201710629286A CN107370319B CN 107370319 B CN107370319 B CN 107370319B CN 201710629286 A CN201710629286 A CN 201710629286A CN 107370319 B CN107370319 B CN 107370319B
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- punching sheet
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- 238000004080 punching Methods 0.000 claims abstract description 54
- 239000000956 alloy Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 4
- -1 aluminum-manganese Chemical compound 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000004512 die casting Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 11
- 238000010030 laminating Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 7
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
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- 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
- H02K17/12—Asynchronous induction motors for multi-phase current
-
- 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
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The novel high-starting torque three-phase asynchronous motor comprises a stator arranged in a machine base and a rotor which is in clearance fit with the stator, wherein the rotor comprises a rotating shaft, a rotor conducting bar and a rotor iron core which is formed by coaxially laminating rotor punching sheets, the shaft extension end of the rotating shaft is of a conical structure, and a rain-proof disc and a V-shaped oil seal ring are arranged on the shaft extension end; the center of the rotor punching sheet is provided with a center through hole, positioning key grooves are symmetrically arranged at the center through hole, rotor grooves which are arranged along the radial direction are formed in the end face of the rotor punching sheet near the outer circumference, each rotor groove comprises a long rotor groove and a short rotor groove, the long rotor grooves and the short rotor grooves are sequentially and alternately arranged on the end face of the rotor punching sheet near the outer circumference at intervals, and the rotor punching sheets on the same axis are placed by the long rotor grooves and the short rotor grooves in a staggered manner; the three-phase asynchronous motor for the high-starting-torque pumping unit adopts a mode of laminating long rotor grooves and short rotor grooves at intervals, so that the structural strength is increased, and the working requirements of high starting torque and high slip are met.
Description
Technical Field
The invention belongs to the technical field of three-phase asynchronous motors, and particularly relates to a novel high-starting-torque three-phase asynchronous motor.
Background
The operating state of a three-phase asynchronous motor is generally divided into starting, running and braking. The main defects of the existing three-phase asynchronous motor are that the starting current is larger and the starting torque is small. Therefore, when designing a three-phase asynchronous motor, it is desirable that the starting torque is large and the starting current is small. This is because the starting torque of the three-phase asynchronous motor is proportional to the rotor loss, and the rotor resistance is better when starting is expected to be higher; however, for efficiency, it is desirable that the rotor resistance be small after the start-up is completed. The starting torque of the conventional three-phase asynchronous motor can meet 1.8-2.0 times of rated torque according to GB21210, and most mechanical equipment for factories can be driven, but part of special load-requiring motors can provide large starting torque and high slip, can drive and drive flywheel torque to be large and uneven impact load, and is suitable for working occasions with a large number of reversals.
The load of the pumping unit is characterized in that the pumping unit pumps crude oil into a pipe network on the ground by the up-and-down motion of a pumping rod, when the pumping unit lifts an oil column in an up-stroke mode, the required power is high, and the pumping unit can automatically fall without power in a down-stroke mode. The motor of the pumping unit in the existing market has uneven appearance and quite different running performance.
Disclosure of Invention
The invention aims to provide a three-phase asynchronous motor which meets national standard installation size and high starting torque aiming at the situation that the motor in the existing market has uneven appearance and quite different running performance.
In order to solve the technical problems, the invention adopts the following technical scheme: the novel high-starting torque three-phase asynchronous motor comprises a motor base, a stator arranged in the motor base and a rotor arranged in clearance fit with the stator, wherein the rotor comprises a rotating shaft, a rotor guide bar and a rotor iron core coaxially overlapped by a rotor punching sheet, the rotor is fixedly arranged on the rotating shaft, end covers are respectively arranged at the front end and the rear end of the motor base correspondingly, bearings are respectively arranged between the end covers and the rotating shaft, the inner side and the outer side of each bearing are respectively correspondingly provided with an inner bearing cover and an outer bearing cover, the shaft extension end of the rotating shaft is of a conical structure, a rain-proof disc and a V-shaped oil seal ring are arranged at the shaft extension end, the rain-proof disc is fixedly arranged on the rotating shaft and in clearance fit with the outer bearing covers in the circumferential direction, and the V-shaped oil seal ring is arranged between the rain-proof disc and the outer bearing covers; the center of the rotor punching sheet is provided with a center through hole, positioning key grooves are symmetrically arranged at the center through hole, rotor grooves which are arranged along the radial direction are formed in the end face of the rotor punching sheet near the outer circumference, each rotor groove comprises a long rotor groove and a short rotor groove, the long rotor grooves and the short rotor grooves are sequentially and alternately arranged on the end face of the rotor punching sheet near the outer circumference at intervals, and the rotor punching sheets on the same axis are placed by the long rotor grooves and the short rotor grooves in a staggered manner; the rotor guide bars are coaxially arranged on the outer side of the rotating shaft along the axial direction, and the rotor guide bars and the rotor grooves are arranged in one-to-one correspondence.
The outer circumferential ends of the rotor punching sheet and the positioning key groove, which correspond to each other in the radial direction, are defined as starting points; the rotor punching sheet comprises a rotor punching sheet I and a rotor punching sheet II; the corresponding starting point of the rotor punching sheet is set as a long rotor groove, and the rotor groove adjacent to the long rotor groove is set as a short rotor groove and is orderly and alternately arranged on the near outer circumferential end surface of the whole rotor punching sheet at intervals; the corresponding starting point of the second rotor punching sheet is set as a short rotor groove, and the rotor groove adjacent to the short rotor groove is set as a long rotor groove and is orderly and alternately arranged on the near outer circumferential end surface of the whole rotor punching sheet at intervals; the rotor core is formed by coaxially stacking 10-20 rotor punching sheets I and 10-20 rotor punching sheets II in sequence.
The rotor conducting bars are formed by injecting liquid alloy into rotor grooves of the rotor core through a centrifugal die casting process, and rotor conducting bar structures with different radial dimensions are formed.
The long rotor grooves and the short rotor grooves are uniformly distributed on the near outer circumferential end face of the rotor punching sheet, and 22-29 long rotor grooves and 29 short rotor grooves are respectively formed.
The depth of the rotor groove is 0.5-0.8 mm, and the width of the rotor groove is 4-4.6 mm.
The length between two arc-shaped top ends of the long rotor groove is 21.8-36 mm; the length between two arc-shaped top ends of the short rotor groove is 12.8-17 mm.
The rotor conducting bars are made of cast aluminum-manganese alloy materials.
The rotor groove runs through and is arranged on the rotor punching sheet, the rotor groove is arranged to be long-strip-shaped, and two ends of the rotor groove are in arc transition connection.
The novel high-starting-torque three-phase asynchronous motor has the following beneficial effects:
1) The three-phase asynchronous motor for the high-starting-torque pumping unit meets the working requirements of high starting torque and high slip, and the rotor structure increases the rotor resistance by reducing the area of a rotor groove, so that larger starting torque multiple is realized;
2) The rotor core adopts a mode of laminating long rotor grooves and short rotor grooves at intervals, so that the situation that broken bars and rotor end rings fall off due to too small rotor groove shapes is avoided, and meanwhile, the structural strength is also increased;
2) The shaft extension end of the rotor is specially processed into a conical structure inconsistent with the conventional cylindrical shaft extension according to the requirements of a user, the size of the conical shaft is calculated by measuring the inner hole size of a belt pulley of the user, and the requirements of the motor shaft extension for installing the belt pulley are met;
4) The rain-proof disc additionally arranged at the shaft extension end is fixed on the rotating shaft through a screw, rotates along with the rotating shaft, is in clearance fit with the bearing outer cover in the circumferential direction, and can effectively achieve a waterproof effect together with the V-shaped oil seal ring arranged between the bearing outer covers;
5) The novel three-phase asynchronous motor rotor structure has the advantages of strong pertinence, perfect process, long annual running time, suitability for mass popularization and motor meeting the working condition requirements on site.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of a rotor sheet one of the present invention;
FIG. 4 is a schematic view of a rotor sheet II of the present invention;
fig. 5 is a half cross-sectional view of the rotor guide ring structure of the present invention.
Detailed Description
The invention provides a novel high-starting-torque three-phase asynchronous motor, as shown in fig. 1 to 4, the three-phase asynchronous motor for a pumping unit with high starting torque comprises a base 10, a stator arranged in the base 10 and a rotor arranged in clearance fit with the stator, wherein the rotor comprises a rotating shaft 9, a rotor conducting bar and a rotor iron core 6 formed by coaxially laminating rotor punching sheets, the rotor is fixedly arranged on the rotating shaft 9, end covers 5 are respectively and correspondingly arranged at the front end and the rear end of the base 10, bearings 3 are respectively arranged between the end covers 5 and the rotating shaft 9, a bearing inner cover 4 and a bearing outer cover 2 are respectively and correspondingly arranged at the inner side and the outer side of the bearing 3, the shaft extending end of the rotating shaft is provided with a conical structure 1, a rain-proof disc 17 and a V-shaped oil seal 18 are arranged at the shaft extending end, the rain-proof disc 17 is fixedly arranged on the rotating shaft 9 and in clearance fit with the bearing outer cover 2 in the circumferential direction, and the V-shaped oil seal ring 18 is arranged between the rain-proof disc 17 and the bearing outer cover 2, as shown in fig. 2.
The center of the rotor punching sheet is provided with a center hole 13, positioning key grooves 14 are symmetrically arranged at the center hole 13, and the rotor core 6 is fixedly arranged on the rotating shaft 9 through the positioning key grooves 14. The rotor slots are arranged along the radial direction on the near outer circumferential end surface of the rotor punching sheet, as shown in fig. 3, the rotor slots comprise long rotor slots 16 and short rotor slots 15, the long rotor slots 16 and the short rotor slots 15 are alternately arranged on the near outer circumferential end surface of the whole rotor punching sheet at intervals in sequence, and the rotor punching sheet on the same axis is placed by staggering the long rotor slots 16 and the short rotor slots 15, so that the structural strength is enhanced. Preferably, the long rotor grooves and the short rotor grooves 15 are uniformly distributed on the near outer circumferential end surface of the rotor punching sheet, and 22-29 long rotor grooves 16 and 29 short rotor grooves 15 are respectively arranged. The rotor bars 12 are coaxially arranged on the outer side of the rotating shaft along the axial direction, and the rotor bars 12 are arranged in one-to-one correspondence with the rotor grooves.
In this embodiment, the rotor sheet includes a first rotor sheet and a second rotor sheet; the outer circumferential ends of the rotor laminations and the locating key slots 14, which correspond radially, are defined as starting points; a long rotor groove 16 is arranged at a corresponding starting point of the rotor punching sheet, and short rotor grooves 15 are arranged at rotor grooves adjacent to the long rotor groove 16 and are alternately arranged on the near outer circumferential end surface of the whole rotor punching sheet in sequence; the corresponding starting point of the second rotor punching sheet is set as a short rotor groove 15, and the rotor groove adjacent to the short rotor groove 15 is set as a long rotor groove 16 and is orderly and alternately arranged on the near outer circumferential end surface of the whole rotor punching sheet at intervals. In this embodiment, the rotor core is formed by stacking 10-20 rotor punching sheets one and 10-20 rotor punching sheets two alternately and coaxially in sequence, the long rotor slots 16 and the short rotor slots 15 are uniformly distributed on the near outer circumferential end surface of the rotor punching sheets at intervals, and 22-29 long rotor slots 16 and 29 short rotor slots 15 are respectively arranged.
The three-phase asynchronous motor for the high-starting-torque pumping unit meets the working requirements of high starting torque and high slip, and the rotor structure increases the rotor resistance by reducing the area of a rotor groove, so that larger starting torque multiple is realized; meanwhile, in order to avoid the situation that broken bars and rotor end rings fall off due to the fact that the rotor groove type is too small, the rotor core adopts a mode that long rotor grooves 16 and short rotor grooves 15 are stacked at intervals coaxially, structural strength is improved, meanwhile, aluminum-manganese alloy materials with large resistivity are adopted, rotor resistance is increased, and therefore the rotor core meets a rotor structure with high starting torque and high slip.
The rotor groove runs through and is arranged on the rotor punching sheet, the rotor groove is arranged to be long-strip-shaped, and two ends of the rotor groove are in arc transition connection. Preferably, the depth of the rotor groove is 0.5-0.8 mm, and the width of the rotor groove is 4-4.6 mm; the length between the two arc-shaped top ends of the long rotor groove 16 is 21.8-36 mm; the length between the two arc-shaped top ends of the short rotor groove 15 is 12.8-17 mm.
The rotor bars 12 are formed by injecting a liquid alloy into the rotor slots of the rotor core through a centrifugal die casting process, as shown in fig. 4, to form a cast aluminum rotor with the rotor bars 12 and the rotor end rings 11, then cold pressing the cast aluminum rotor onto the rotating shaft, adding weights to the rotor, and forming a complete rotor after integral balancing, wherein in the embodiment, the rotor bars 12 are made of cast aluminum manganese alloy.
The rotor punching sheets on the same axis are placed in a staggered manner by adopting the long rotor grooves 16 and the short rotor grooves 15, so that the rotor conducting bar 12 structure with different radial dimensions is formed, the strength requirement of the rotor conducting bar 12 can be met on the premise of meeting high starting torque and high slip, and the situation that the rotor end ring falls off due to high starting torque impact is avoided.
The shaft extension end of the rotor is processed into a conical structure inconsistent with the conventional cylindrical shaft extension according to the requirement of a user, the size of the conical structure is obtained after calculation by measuring the size of an inner hole of a belt pulley of the user, the requirement of installing the belt pulley at the shaft extension end of the motor is met, and the belt pulley drives the load of the pumping unit to pump crude oil from the bottom of an oil well during starting. Preferably, the shaft extension end is provided with a rain-proof disc, the rain-proof disc is fixed on the rotating shaft through a screw, one end face of the rain-proof disc extends towards the shaft along with the rotation of the rotating shaft, the other end face of the rain-proof disc extends towards the bearing, the bearing outer cover is in clearance fit with the circumference direction, and a V-shaped oil seal ring 18 is further arranged between the rain-proof disc and the bearing outer cover, so that the waterproof effect can be effectively achieved.
The novel three-phase asynchronous motor rotor structure has the advantages of strong pertinence, perfect process, long annual running time, suitability for mass popularization and motor meeting the working condition requirements on site.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention.
Also, the terms "a" and "an" and "the" as used herein, such as "a" and "an" and "the" are used merely for convenience of description and are not intended to limit the scope of the invention, but rather the relative changes or modifications thereof, without materially changing the technical content, are also considered to be within the scope of the invention which can be practiced.
The foregoing embodiments illustrate and describe the basic principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which are all within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.
Claims (7)
1. The utility model provides a high starting torque three-phase asynchronous motor, includes the frame, installs the stator in the frame and with the rotor of stator clearance fit installation, the rotor includes pivot, rotor conducting bar and the rotor core that is overlapped by the rotor punching coaxial, rotor fixed mounting is equipped with the end cover in the pivot respectively corresponding in the front and back end of frame, all is equipped with the bearing between end cover and the pivot, and the bearing inside and outside corresponds respectively and is equipped with bearing inner cup and bearing enclosing cover, its characterized in that: the shaft extension end of the rotating shaft is of a conical structure, a rain-proof disc and a V-shaped oil seal ring are arranged on the shaft extension end, the rain-proof disc is fixedly arranged on the rotating shaft and is in clearance fit with the bearing outer cover in the circumferential direction, and the V-shaped oil seal ring is arranged between the rain-proof disc and the bearing outer cover; the center of the rotor punching sheet is provided with a center through hole, positioning key grooves are symmetrically arranged at the center through hole, rotor grooves which are arranged along the radial direction are formed in the end face of the rotor punching sheet near the outer circumference, each rotor groove comprises a long rotor groove and a short rotor groove, the long rotor grooves and the short rotor grooves are sequentially and alternately arranged on the end face of the rotor punching sheet near the outer circumference at intervals, and the rotor punching sheets on the same axis are placed by the long rotor grooves and the short rotor grooves in a staggered manner; the rotor guide bars are coaxially arranged on the outer side of the rotating shaft along the axial direction, and the rotor guide bars and the rotor grooves are arranged in one-to-one correspondence;
the outer circumferential ends of the rotor punching sheet and the positioning key groove, which correspond to each other in the radial direction, are defined as starting points; the rotor punching sheet comprises a rotor punching sheet I and a rotor punching sheet II; the corresponding starting point of the rotor punching sheet is set as a long rotor groove, and the rotor groove adjacent to the long rotor groove is set as a short rotor groove and is orderly and alternately arranged on the near outer circumferential end surface of the whole rotor punching sheet at intervals; the corresponding starting point of the second rotor punching sheet is set as a short rotor groove, and the rotor groove adjacent to the short rotor groove is set as a long rotor groove and is orderly and alternately arranged on the near outer circumferential end surface of the whole rotor punching sheet at intervals; the rotor core is formed by coaxially stacking 10-20 rotor punching sheets I and 10-20 rotor punching sheets II in sequence.
2. A high start torque three-phase asynchronous motor according to claim 1, characterized in that: the rotor conducting bars are formed by injecting liquid alloy into rotor grooves of the rotor core through a centrifugal die casting process, and rotor conducting bar structures with different radial dimensions are formed.
3. A high start torque three-phase asynchronous motor according to claim 2, characterized in that: the long rotor grooves and the short rotor grooves are uniformly distributed on the near outer circumferential end face of the rotor punching sheet, and 22-29 long rotor grooves and 29 short rotor grooves are respectively formed.
4. A high start torque three-phase asynchronous motor according to claim 3, characterized in that: the depth of the rotor groove is 0.5-0.8 mm, and the width of the rotor groove is 4-4.6 mm.
5. A high start torque three phase asynchronous motor according to claim 4, wherein: the length between two arc-shaped top ends of the long rotor groove is 21.8-36 mm; the length between two arc-shaped top ends of the short rotor groove is 12.8-17 mm.
6. A high start torque three phase asynchronous motor according to claim 5, wherein: the rotor conducting bars are made of cast aluminum-manganese alloy materials.
7. A high start torque three phase asynchronous motor according to claim 6, wherein: the rotor groove runs through and is arranged on the rotor punching sheet, the rotor groove is arranged to be long-strip-shaped, and two ends of the rotor groove are in arc transition connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629286.3A CN107370319B (en) | 2017-07-28 | 2017-07-28 | Novel high-starting torque three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629286.3A CN107370319B (en) | 2017-07-28 | 2017-07-28 | Novel high-starting torque three-phase asynchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107370319A CN107370319A (en) | 2017-11-21 |
| CN107370319B true CN107370319B (en) | 2024-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710629286.3A Active CN107370319B (en) | 2017-07-28 | 2017-07-28 | Novel high-starting torque three-phase asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107370319B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10322990A (en) * | 1997-05-22 | 1998-12-04 | Hitachi Ltd | Rotor of squirrel-cage electrical rotary machine |
| CN2579068Y (en) * | 2002-11-20 | 2003-10-08 | 佳木斯电机股份有限公司 | Frequency converting speed-adjusting three-phase asynchronous motor for table roller |
| JP2010268573A (en) * | 2009-05-13 | 2010-11-25 | Toyota Industries Corp | Squirrel-cage induction machine and rotor for squirrel-cage induction machines |
| JP2014147253A (en) * | 2013-01-30 | 2014-08-14 | Toyota Industries Corp | Induction motor |
| CN204216686U (en) * | 2014-11-28 | 2015-03-18 | 卧龙电气集团股份有限公司 | A kind of Novel motor rotor punching |
| CN205092676U (en) * | 2015-11-16 | 2016-03-16 | 广东美芝制冷设备有限公司 | Rotor and compressor having same |
| CN207082993U (en) * | 2017-07-28 | 2018-03-09 | 卧龙电气集团股份有限公司 | A kind of new high start torque threephase asynchronous |
-
2017
- 2017-07-28 CN CN201710629286.3A patent/CN107370319B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10322990A (en) * | 1997-05-22 | 1998-12-04 | Hitachi Ltd | Rotor of squirrel-cage electrical rotary machine |
| CN2579068Y (en) * | 2002-11-20 | 2003-10-08 | 佳木斯电机股份有限公司 | Frequency converting speed-adjusting three-phase asynchronous motor for table roller |
| JP2010268573A (en) * | 2009-05-13 | 2010-11-25 | Toyota Industries Corp | Squirrel-cage induction machine and rotor for squirrel-cage induction machines |
| JP2014147253A (en) * | 2013-01-30 | 2014-08-14 | Toyota Industries Corp | Induction motor |
| CN204216686U (en) * | 2014-11-28 | 2015-03-18 | 卧龙电气集团股份有限公司 | A kind of Novel motor rotor punching |
| CN205092676U (en) * | 2015-11-16 | 2016-03-16 | 广东美芝制冷设备有限公司 | Rotor and compressor having same |
| CN207082993U (en) * | 2017-07-28 | 2018-03-09 | 卧龙电气集团股份有限公司 | A kind of new high start torque threephase asynchronous |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107370319A (en) | 2017-11-21 |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No. 1801, Dushan Avenue, Nanyang City, Henan Province Applicant after: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP Co.,Ltd. Applicant after: WOLONG ELECTRIC GROUP Co.,Ltd. Address before: 312300 Economic Development Zone, Shangyu District, Shaoxing City, Zhejiang Province Applicant before: WOLONG ELECTRIC GROUP Co.,Ltd. Country or region before: China Applicant before: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP Co.,Ltd. Country or region after: China Address after: 312300 Economic Development Zone, Shangyu District, Shaoxing City, Zhejiang Province Applicant after: WOLONG ELECTRIC GROUP Co.,Ltd. Applicant after: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP Co.,Ltd. Address before: 312300 Economic Development Zone, Shangyu District, Shaoxing City, Zhejiang Province Applicant before: WOLONG ELECTRIC GROUP Co.,Ltd. Country or region before: China Applicant before: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |