CN207819575U - A kind of cage structure for cage induction motor - Google Patents
A kind of cage structure for cage induction motor Download PDFInfo
- Publication number
- CN207819575U CN207819575U CN201820038542.1U CN201820038542U CN207819575U CN 207819575 U CN207819575 U CN 207819575U CN 201820038542 U CN201820038542 U CN 201820038542U CN 207819575 U CN207819575 U CN 207819575U
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- Prior art keywords
- cage
- main body
- groove
- induction motor
- item
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Abstract
The utility model discloses a kind of cage structure for cage induction motor, including cage main body, the cage main body is arranged in rotor groove, and the cage main body is less than the sectional area of cage main body other parts close to the sectional area of groove slot-open-section.The utility model to increase skin-effect when cage item starts, makes it in the case where not changing rotor groove profile, effectively improves detent torque, while also allowing for cage item in the groove of rotor by reducing sectional area of the cage item close to slot-open-section.
Description
Technical field
The utility model belongs to asynchronous machine technical field, more particularly to a kind of cage item knot for cage induction motor
Structure.
Background technology
As shown in Figure 1, current each producer Y, the serial motors such as YKK, YKS and its subseries（Such as YZKK, YZKS）Transfer
Son all uses rectangular channel, is primarily due to that rectangular groove structure is simple, and cage item easily fixes, and generalization degree is high, can save mould
Tool.Existing cage item generally uses fine copper, and such as red copper can obtain higher efficiency, but detent torque is less than normal, especially serial
The torque of respective specification electric motor starting does not have allowance in motor.Therefore in the occasion for needing detent torque larger, do not changing groove profile
In the case of, generally by using the higher material of resistivity, such as brass increases detent torque.Its principle is turned by increasing
Sub- resistance, to increase detent torque.Due to the change of resistivity, when startup and resistance increases when normal operation, although can
To increase detent torque, but copper loss also increases when normal operation, and the efficiency reduction of motor is more.
Utility model content
The goal of the invention of the utility model is：In view of the above problems, motor can not changed by providing one kind
In the case of slot shape of rotor, impedance when startup is effectively improved, to increase the cage for cage induction motor of detent torque
Structure.
What the technical solution of the utility model technology was realized in：A kind of cage structure for cage induction motor,
Including cage main body, the cage main body is arranged in rotor groove, it is characterised in that：The cage main body is close to groove
The sectional area of slot-open-section is less than the sectional area of cage main body other parts.
Cage structure described in the utility model for cage induction motor, in the cage main body close to groove slot
The periphery of oral area point is provided with annular groove.
Cage structure described in the utility model for cage induction motor, in the cage main body close to groove slot
Oral area, which sets up separately, is equipped with axially extending bore.
Cage structure described in the utility model for cage induction motor, in the cage main body close to groove slot
The section setting of oral area point is fluted.
Cage structure described in the utility model for cage induction motor, the rotor groove is rectangular,
The cage main body is in integrally the rectangle to match with rotor recesses.
The utility model is imitated by reducing sectional area of the cage item close to slot-open-section with increasing squish flow when cage item starts
It answers, makes it in the case where not changing rotor groove profile, effectively improve detent torque, while also allowing for cage item and being mounted on rotor
Groove in.
Description of the drawings
Fig. 1 is scheme of installation of the existing cage item in rotor recesses.
Fig. 2 is a kind of structural schematic diagram of the utility model.
Fig. 3 is another structural schematic diagram of the utility model.
Fig. 4 is another structural schematic diagram of the utility model.
Fig. 5 is another structural schematic diagram of the utility model.
Fig. 6 is another structural schematic diagram of the utility model.
Fig. 7 is another structural schematic diagram of the utility model.
It is marked in figure：1 is cage main body, and 2 be rotor recesses, and 3 be groove notch, and 4 be annular groove, and 5 be axially extending bore,
6 be groove.
Specific implementation mode
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Fig. 2, a kind of cage structure for cage induction motor, including cage main body 1, the cage main body 1
It is arranged in rotor groove 2, the rotor groove 2 is rectangular, in order to which the installation of cage item is fixed, the cage item master
The whole outer profile of body 1 is in the rectangle to match with rotor recesses 2, section of the cage main body 1 close to 3 part of groove notch
Product makes it not change motor turn less than the sectional area of 1 other parts of cage main body to increase skin-effect when cage item starts
In the case of pilot trench type, detent torque is effectively improved.
In the present embodiment, the periphery of 3 part of groove notch is provided with annular groove 4, institute in the cage main body 1
The section for stating annular groove 4 is arc-shaped.
As shown in Figures 3 and 4, as another structure, 3 part of groove notch is provided with axis in the cage main body 1
To through-hole 5, the axially extending bore 5 is rounded or oval or other shapes.
As shown in Fig. 5,6 and 7, as another structure, in the cage main body 1 close to the end of 3 part of groove notch
Section setting fluted 6, the toroidal or other shapes that the groove 6 is arc-shaped or oval or opening gradually reduces.
Specific comparative example：It is the cage item of the application with structure shown in Fig. 2, is 1 by the cage item of the application and specific resistance rate
The high resistivity rectangle cage item that fine copper rectangle cage item and specific resistance rate are 1.05 carries out applying comparison.
Wherein, fine copper rectangle cage item is consistent with high resistivity rectangle cage section, cage item and the fine copper rectangle cage of the application
Material is fine copper.The cage item of the application reduces relative to fine copper rectangle cage item and high resistivity rectangle cage sectional area
5%, high resistivity rectangle cage resistivity ratio fine copper rectangle cage item is high by 5%, i.e. the cage item of the application and high resistivity rectangle cage item
Resistance is essentially identical.
Equivalent impedance see the table below：
| Serial number | Equivalent impedance | Unit |
| Cage item 1 | 0.169538 | μΩ |
| Cage item 2 | 0.147469 | μΩ |
| Cage item 3 | 0.151159 | μΩ |
It can be seen that compared to fine copper rectangle cage item, the cage item of the application starts impedance and increases 15%, high resistivity rectangle cage item
Start impedance and increases 2.5%.Also mean that the cage detent torque of the application increases 15%, high resistivity rectangle cage item
Detent torque increases 5%.
In general cage resistance is made to increase by 5% by changing resistivity, detent torque can increase by 2~5%, using this Shen
Please form cage item, because sectional area reduce caused by resistance increase by 5%, detent torque can increase by 10~30%.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (5)
1. a kind of cage structure for cage induction motor, including cage main body（1）, the cage main body（1）It is arranged in electricity
Machine rotor groove（2）It is interior, it is characterised in that：The cage main body（1）Close to groove notch（3）Partial sectional area is less than cage item
Main body（1）The sectional area of other parts.
2. the cage structure according to claim 1 for cage induction motor, it is characterised in that：In the cage main body
（1）Close to groove notch（3）Partial periphery is provided with annular groove（4）.
3. the cage structure according to claim 1 for cage induction motor, it is characterised in that：In the cage main body
（1）Close to groove notch（3）Part is provided with axially extending bore（5）.
4. the cage structure according to claim 1 for cage induction motor, it is characterised in that：In the cage main body
（1）Close to groove notch（3）Partial section setting is fluted（6）.
5. the cage structure as claimed in any of claims 1 to 4 for cage induction motor, it is characterised in that：
The rotor groove（2）It is rectangular, the cage main body（1）Entirety is in and rotor recesses（2）The rectangle to match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820038542.1U CN207819575U (en) | 2018-01-10 | 2018-01-10 | A kind of cage structure for cage induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820038542.1U CN207819575U (en) | 2018-01-10 | 2018-01-10 | A kind of cage structure for cage induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207819575U true CN207819575U (en) | 2018-09-04 |
Family
ID=63326951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820038542.1U Active CN207819575U (en) | 2018-01-10 | 2018-01-10 | A kind of cage structure for cage induction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207819575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009979A (en) * | 2019-11-26 | 2020-04-14 | 华北电力大学 | High-voltage high-power cage type motor rotor slot |
-
2018
- 2018-01-10 CN CN201820038542.1U patent/CN207819575U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009979A (en) * | 2019-11-26 | 2020-04-14 | 华北电力大学 | High-voltage high-power cage type motor rotor slot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210811 Address after: 618000 No. 19-12, building 21, phase I, Yinxin Wuzhou Plaza, No. 733, Section 2, Taishan South Road, Deyang City, Sichuan Province Patentee after: Dongfang Electric (Deyang) Motor Technology Co.,Ltd. Patentee after: DEC DONGFANG ELECTRIC MACHINERY Co.,Ltd. Address before: 188 Huanghe West Road, Jingyang District, Deyang City, Sichuan Province Patentee before: DEC DONGFANG ELECTRIC MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |