CN201378760Y - Double squirrel cage induction motor rotor - Google Patents
Double squirrel cage induction motor rotor Download PDFInfo
- Publication number
- CN201378760Y CN201378760Y CN200920126709U CN200920126709U CN201378760Y CN 201378760 Y CN201378760 Y CN 201378760Y CN 200920126709 U CN200920126709 U CN 200920126709U CN 200920126709 U CN200920126709 U CN 200920126709U CN 201378760 Y CN201378760 Y CN 201378760Y
- Authority
- CN
- China
- Prior art keywords
- rotor
- rotor core
- motor
- induction motor
- squirrel cage
- 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.)
- Expired - Fee Related
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a double squirrel cage induction motor rotor. A rotary shaft is fixedly mounted inside a shaft hole of a rotor core, independent squirrel cage bars and end rings are arranged inside the rotor core, and a rotor sleeve is sleeved on the rotor core and in interference fit or pin connection with the rotor core. Current passing through the rotor is low when the motor rotor is started, the starting torque of the motor rotor is large, and the rated speed is high.
Description
Technical field
The utility model relates to two cage torque motors, is specifically related to the rotor of a kind of pair of cage induction motor.
Background technology
Induction motor is to be transformation of electrical energy the plant equipment that mechanical energy obtains rotary power, induction motor is made of stator and rotor, stator coil will produce rotating magnetic field when connecting alternating current, rotor produces torque in rotating magnetic field makes the motor rotation obtain mechanical energy.Existing rotor generally is made of rotating shaft, rotor core, end ring, and rotor core is fixed in the rotating shaft, and the end ring gravity casting is in the rotor core both sides, and the rotation of rotor core drives rotating shaft and rotates, and rotating shaft passes rotary power.Induction motor is widely used in as fields such as lifting, transportation, execution machineries, this motor is very big at the electric current that starts the moment generation, be unfavorable for automatic intelligent control, simultaneously, the big electric current of motor start-up does not obtain bigger turning moment, still has to rotate by actuating motor; The big electric current of motor start-up, also big to power surges, very unfavorable to bypass electrical equipment reliability service.
Summary of the invention
The utility model provides the rotor of a kind of pair of cage induction motor at the deficiencies in the prior art, and the electric current by rotor when this motor rotor starts is little, and the motor rotor staring torque is big, rated speed is higher.
The purpose of this utility model is achieved in that rotating shaft is fixedly mounted in the axis hole of rotor core, is provided with independently cage bar and end ring in the rotor core, and rotor sleeve is enclosed within described rotor core outer and rotor core interference fit or pin joint.
Described rotor sleeve adopts iron or ferro-silicium material.
Owing to adopt technique scheme, rotor core is fixedly mounted in the rotating shaft, be provided with independently cage bar in the iron core, iron core forms cage structure, and interference fit has rotor sleeve outside rotor core, forms second cage structure, i.e. the rotor of two cage modles, rotating shaft is fixedlyed connected respectively with sleeve with rotor core, rotor core, rotates in stator as a whole.When heavily loaded motor start-up moment, motor slip ratio is bigger, motor rotor produces back electromotive force, under the effect of kelvin effect, the current concentration of rotor is on rotor sleeve, and rotor sleeve adopts soft magnet material such as iron or ferro-silicium, because it is the magnetic circuit part, it also is circuit part, the back electromotive force that produces is not high, and it is infinitely great that rotor resistance just is tending towards, and the electric current that passes through is just little, electric current by rotor when motor rotor starts is little, make that the startup of motor is flexible the startup, the protection motor can not burnt out, and is little to the impact of power supply yet, little to the electrical equipment influence that bypass is moving, the reliability service of assurance entire circuit; In addition, the electric current by rotor when motor rotor starts is little, makes that the output torque of motor is very big, can start heavy-duty machinery, and the rated speed of motor is higher.
The utility model also has simple in structure, good reliability, motor long service life, advantage with low cost.
Description of drawings
Fig. 1 is a rotor structure of the present utility model.
In the accompanying drawing, 1 is rotating shaft, and 2 is rotor core, and 3 is rotor sleeve, and 4 is end ring.
Embodiment
As shown in Figure 1, the rotor of torque motor comprises the rotor core 2 of turning effort, is installed with rotating shaft 1 in rotor core 2 axis holes, rotor core 2 and rotating shaft 1 interference fit, perhaps pin joint is in rotating shaft, and rotating shaft 1 is done with rotor core 2 and rotated in a circumferential direction transmitting rotary power.End ring 4 gravity castings are provided with independently cage bar in the rotor core on rotor core 2.Rotor sleeve 3 is enclosed within described rotor core 2 fixedlys connected with rotor core 2, rotor sleeve 3 be iron or ferro-silicium as soft magnet, the flexibility that guarantees motor starts and makes entire circuit reliable.Rotor sleeve 3 ring sets are on rotor core 2, and rotor sleeve 3 and rotor core 2 interference fit perhaps with rotor core 2 welding, can certainly pass through pin joint with end ring 4 or weld circumferentially fixing.
Sleeve that the utility model newly adds is 3 simple in structure, processing cost is low, and can prolong the useful life of motor.
Claims (2)
1. the rotor of two cage induction motors, rotating shaft is fixedly mounted in the axis hole of rotor core, is provided with independently cage bar and end ring in the rotor core, it is characterized in that: rotor sleeve is enclosed within described rotor core outer and rotor core interference fit or pin joint.
2. the rotor of pair cage induction motor according to claim 1 is characterized in that: described rotor sleeve adopts iron or ferro-silicium material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126709U CN201378760Y (en) | 2009-03-19 | 2009-03-19 | Double squirrel cage induction motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126709U CN201378760Y (en) | 2009-03-19 | 2009-03-19 | Double squirrel cage induction motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378760Y true CN201378760Y (en) | 2010-01-06 |
Family
ID=41518880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920126709U Expired - Fee Related CN201378760Y (en) | 2009-03-19 | 2009-03-19 | Double squirrel cage induction motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378760Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231592A (en) * | 2011-07-01 | 2011-11-02 | 杭州电子科技大学 | Novel rotor structure of assistant magnetism type squirrel cage asynchronous motor and production process |
| CN105743242A (en) * | 2014-12-25 | 2016-07-06 | 东芝三菱电机产业系统株式会社 | Cage-type induction motor, and rotor of cage-type induction motor |
-
2009
- 2009-03-19 CN CN200920126709U patent/CN201378760Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231592A (en) * | 2011-07-01 | 2011-11-02 | 杭州电子科技大学 | Novel rotor structure of assistant magnetism type squirrel cage asynchronous motor and production process |
| CN102231592B (en) * | 2011-07-01 | 2013-03-06 | 杭州电子科技大学 | Novel rotor structure of assistant magnetism type squirrel cage asynchronous motor and production process |
| CN105743242A (en) * | 2014-12-25 | 2016-07-06 | 东芝三菱电机产业系统株式会社 | Cage-type induction motor, and rotor of cage-type induction motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20160319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |