CN112600322A - Small-size motor closed slot cast aluminum rotor - Google Patents
Small-size motor closed slot cast aluminum rotor Download PDFInfo
- Publication number
- CN112600322A CN112600322A CN202011279404.0A CN202011279404A CN112600322A CN 112600322 A CN112600322 A CN 112600322A CN 202011279404 A CN202011279404 A CN 202011279404A CN 112600322 A CN112600322 A CN 112600322A
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- Prior art keywords
- cast aluminum
- rotor
- small
- cap
- closed slot
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Classifications
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- 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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
Abstract
The invention discloses a small-sized motor closed slot cast aluminum rotor, which comprises a rotor iron core: rotor core is folded by a plurality of rotor punching and is pressed the shaping, the central point department position of rotor punching is equipped with the shaft hole, and runs through along its axial in the shaft hole and be provided with the pivot, still includes the squirrel cage, the squirrel cage includes that a plurality of runs through the cast aluminium bar in spacing hole on the rotor punching, and the both ends of cast aluminium bar are provided with respectively along its axial front end housing of pegging graft and along its axial screwed connection's rear end cap. According to the invention, the cast aluminum rotor adopts a split type squirrel cage structure, and the squirrel cage can be quickly and conveniently disassembled and assembled from two ends while the stable connection between the squirrel cage and the rotor core is realized, so that the damaged parts on the squirrel cage can be independently replaced and maintained, the high cost caused by the integral replacement of the squirrel cage is avoided, and the popularization and the use of the cast aluminum rotor of the small-sized motor are facilitated.
Description
Technical Field
The invention relates to the technical field of cast aluminum rotors, in particular to a closed slot cast aluminum rotor of a small motor.
Background
The cast aluminum rotor is mainly a main rotating part in power machinery and working machinery and is commonly used in a small motor, the rotor punching sheets are main parts forming the cast aluminum rotor, a rotor core is formed by laminating a certain number of rotor punching sheets, a certain number of grooves are formed in the rotor core, molten aluminum liquid is cast to form aluminum guide strips, the cast aluminum rotor is assembled and used, after the cast aluminum rotor is used for a long time, the phenomenon that parts in the rotor are damaged or broken can occur, and therefore the damaged or broken parts need to be replaced and maintained.
The existing small-sized motor cast aluminum rotor usually adopts a mode of casting in the pressure in a rotor core, and an aluminum bar integral type is cast on the rotor core, so that a squirrel cage structure of the cast aluminum rotor is relatively fixed, and split type dismounting operation cannot be carried out on the cast aluminum rotor, so that parts damaged in the cast aluminum rotor cannot be independently replaced, the maintenance and use cost of the cast aluminum rotor is increased, and the large-scale popularization and use are not facilitated.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a small-sized motor closed-slot cast aluminum rotor which can be used for disassembling a squirrel cage of a cast aluminum motor in a split mode and realizing independent replacement of damaged parts.
In order to achieve the purpose, the invention adopts the following technical scheme: a small-sized motor closed slot cast aluminum rotor comprises a rotor core:
the rotor core is formed by laminating a plurality of rotor punching sheets;
the center of the rotor punching sheet is provided with a shaft hole, and a rotating shaft penetrates through the shaft hole along the axial direction of the shaft hole;
the squirrel-cage comprises a plurality of cast aluminum bars penetrating through limiting holes in the rotor punching sheet, and two ends of each cast aluminum bar are respectively provided with a front end cover inserted along the axial direction of the cast aluminum bar and a rear end cover spirally connected along the axial direction of the cast aluminum bar.
As a further description of the above technical solution:
the front end cover and the rear end cover are both provided with preformed holes, and the preformed holes are matched with the cast aluminum bars.
As a further description of the above technical solution:
a cap groove is formed in the front end cover and located on the outer side of the preformed hole, and a pressing cap is arranged at one end of the cast aluminum rod;
the cast aluminum bar is connected with the front end cover through the embedded clamping connection of the pressing cap and the cap groove.
As a further description of the above technical solution:
an auxiliary plug rod is arranged on the pressing cap along the axial direction of the cast aluminum rod, and an auxiliary groove is formed in the cap groove;
the pressing cap is connected with the cap groove through the insertion of the auxiliary inserting rod and the auxiliary groove.
As a further description of the above technical solution:
the device also comprises a pressing component;
the pressing assembly comprises a pressing cap, inner threads are arranged on the inner wall of the pressing cap, and the inner threads are in threaded connection with the other end of the cast aluminum bar.
As a further description of the above technical solution:
the inner wall of the pressing cap is provided with a concave part close to the opening end, a backing ring is embedded in the concave part, and the backing ring is sleeved on the outer wall of the other end of the cast aluminum bar.
As a further description of the above technical solution:
the rotor punching sheet is provided with a plurality of closed slots distributed along the radial direction of the rotor punching sheet, and the end parts of the closed slots are of arc structures.
As a further description of the above technical solution:
and the inner wall of the shaft hole is provided with a key groove matched with the key teeth on the rotating shaft.
The invention provides a closed slot cast aluminum rotor of a small motor. The method has the following beneficial effects:
this cast aluminium rotor adopts split type squirrel cage structure, when realizing squirrel cage and rotor core stable connection, also can carry out quick convenient dismouting operation with the squirrel cage from both ends to can carry out independent change maintenance operation to the spare part that damages on the squirrel cage, avoid the high cost that the whole change of squirrel cage brought, be favorable to small motor cast aluminium rotor's using widely.
Drawings
FIG. 1 is a schematic view of the overall structure of a closed slot cast aluminum rotor for a small-sized motor according to the present invention;
FIG. 2 is a schematic cross-sectional structure view of a rotor sheet according to the present invention;
FIG. 3 is a schematic structural diagram of a squirrel cage according to the present invention;
FIG. 4 is a partial schematic structural view of the joint of the front end cap and the cast aluminum rod according to the present invention;
fig. 5 is an exploded view of the hold-down assembly of the present invention.
Illustration of the drawings:
1. a rotor core; 2. rotor punching sheets; 21. a closed slot; 22. a shaft hole; 23. a keyway; 24. a limiting hole; 3. a mouse cage; 31. a front end cover; 311. reserving a hole; 312. an auxiliary groove; 313. a cap groove; 32. casting an aluminum bar; 321. pressing the cap; 322. an auxiliary plunger; 33. a rear end cap; 34. a compression assembly; 341. a backing ring; 342. a compression cap; 3421. a recessed portion; 3422. internal threads; 4. a rotating shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1 to 3, a closed slot cast aluminum rotor for a small-sized motor comprises a rotor core 1:
the rotor core 1 is formed by laminating a plurality of rotor punching sheets 2, and the rotor punching sheets 2 are made of round silicon steel sheets and are laminated one by one accurately;
a shaft hole 22 is formed in the center of the rotor sheet 2, and a rotating shaft 4 penetrates through the shaft hole 22 along the axial direction;
the squirrel-cage rotor punching sheet is characterized by further comprising a squirrel-cage 3, wherein the squirrel-cage 3 comprises a plurality of cast aluminum bars 32 penetrating through limiting holes 24 in the rotor punching sheet 2, and two ends of each cast aluminum bar 32 are respectively provided with a front end cover 31 inserted along the axial direction of the cast aluminum bar and a rear end cover 33 spirally connected along the axial direction of the cast aluminum bar.
In this embodiment, insert pivot 4 in the shaft hole 22 on the rotor punching sheet 2, and form complete cast aluminum rotor after running through spacing hole 24 on the rotor punching sheet 2 with cast aluminum bar 32 on the squirrel cage 3, through front end housing 31 along cast aluminum bar 32 axial grafting and along its axial screwed connection's rear end cap 33, can carry out quick convenient dismouting operation with squirrel cage 3 from the both ends of cast aluminum bar 32, thereby can carry out independent change maintenance operation to the spare part of damage on the squirrel cage 3, the high cost that the whole change of squirrel cage 3 brought has been avoided, be favorable to small-size motor cast aluminum rotor's using widely.
As shown in fig. 4, the front end cover 31 and the rear end cover 33 are both provided with the preformed holes 311, the preformed holes 311 are adapted to the cast aluminum bars 32, and the number of the preformed holes 311 is the same as that of the cast aluminum bars 32, so that the cast aluminum bars 32 can be fixed in the preformed holes 311 one by one, and the stability of the laminated state of the rotor core 1 is ensured.
As shown in fig. 4, a cap groove 313 is disposed on the front end cover 31 and outside the preformed hole 311, a pressing cap 321 is disposed at one end of the cast aluminum rod 32, and the cast aluminum rod 32 is connected to the front end cover 31 by the embedded engagement of the pressing cap 321 and the cap groove 313, so that one end of the cast aluminum rod 32 can be completely embedded into the front end cover 31 for fixation, and the gap of the preformed hole 311 is filled for sealing, thereby improving the flatness of the surface of the front end cover 31.
As shown in fig. 4, the pressing cap 321 is provided with an auxiliary rod 322 along the axial direction of the cast aluminum rod 32, the cap groove 313 is provided with an auxiliary groove 312, the pressing cap 321 is connected with the cap groove 313 by the insertion of the auxiliary rod 322 and the auxiliary groove 312, so that the auxiliary reinforcing function can be performed between the end of the cast aluminum rod 32 and the front end cover 31, the phenomenon of the cast aluminum rod 32 rotating in the preformed hole 311 is avoided, and the stability of the cast aluminum rod 32 is improved.
As shown in fig. 3 and 5, the pressing assembly 34 further includes a pressing cap 342, the inner wall of the pressing cap 342 is provided with an internal thread 3422, and the internal thread 3422 is screwed with the other end of the cast aluminum bar 32, so that the pressing cap 342 can fixedly connect the other end of the cast aluminum bar 32 with the rear end cap 33, prevent the end of the cast aluminum bar 32 from being directly exposed, and also can reinforce the cast aluminum bar 32.
As shown in fig. 5, a recessed portion 3421 is provided on the inner wall of the clamp cap 342 near the open end, a backing ring 341 is embedded in the recessed portion 3421, the backing ring 341 is sleeved on the outer wall of the other end of the cast aluminum rod 32, and the backing ring 341 is sleeved on the end portions of the clamp cap 342 and the cast aluminum rod 32, so that an auxiliary measure for buffering and clamping can be provided on the clamp cap 342 and the rear end cap 33, and the connection stability between the clamp cap 342 and the cast aluminum rod 32 is further improved.
As shown in fig. 2, the rotor punching sheet 2 is provided with a plurality of closed slots 21 distributed along the radial direction thereof, and the end portions of the closed slots 21 are arc-shaped structures, so that the closed slots 21 can shorten an effective air gap and weaken the pulsation of an air gap magnetic field, thereby reducing excitation magnetic potential, reducing the loss of a harmonic magnetic field, and contributing to improving the performance of a small-sized motor.
As shown in fig. 2, the inner wall of the shaft hole 22 is provided with a key groove 23 adapted to a key tooth (not shown) on the rotating shaft 4, so as to play a secondary auxiliary reinforcing role between the rotating shaft 4 and the shaft hole 22, increase the friction force between the rotating shaft 4 and the inner wall of the shaft hole 22, and prevent the rotating shaft 4 from rotating in the shaft hole 22.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a small-size motor closed slot cast aluminum rotor, includes rotor core (1), its characterized in that:
the rotor core (1) is formed by laminating a plurality of rotor punching sheets (2);
a shaft hole (22) is formed in the center of the rotor punching sheet (2), and a rotating shaft (4) penetrates through the shaft hole (22) along the axial direction of the shaft hole;
the squirrel-cage rotor punching sheet is characterized by further comprising a squirrel-cage (3), wherein the squirrel-cage (3) comprises a plurality of cast aluminum bars (32) penetrating through limiting holes (24) in the rotor punching sheet (2), and two ends of each cast aluminum bar (32) are respectively provided with a front end cover (31) inserted along the axial direction of the cast aluminum bar and a rear end cover (33) spirally connected along the axial direction of the cast aluminum bar.
2. A small-sized motor closed slot cast aluminum rotor according to claim 1, characterized in that: the front end cover (31) and the rear end cover (33) are both provided with preformed holes (311), and the preformed holes (311) are matched with the cast aluminum bars (32).
3. A small-sized motor closed slot cast aluminum rotor according to claim 1, characterized in that: a cap groove (313) is formed in the front end cover (31) and located on the outer side of the preformed hole (311), and a pressing cap (321) is arranged at one end of the cast aluminum rod (32);
the cast aluminum bar (32) is connected with the front end cover (31) through the embedded clamping connection of the pressing cap (321) and the cap groove (313).
4. A small-sized motor closed slot cast aluminum rotor according to claim 3, characterized in that: an auxiliary plug rod (322) is arranged on the pressing cap (321) along the axial direction of the cast aluminum rod (32), and an auxiliary groove (312) is arranged on the cap groove (313);
the pressing cap (321) is connected with the cap groove (313) through the insertion of the auxiliary plunger (322) and the auxiliary groove (312).
5. A small-sized motor closed slot cast aluminum rotor according to claim 1, characterized in that: further comprising a compression assembly (34);
the pressing assembly (34) comprises a pressing cap (342), inner threads (3422) are arranged on the inner wall of the pressing cap (342), and the inner threads (3422) are in threaded connection with the other end of the cast aluminum bar (32).
6. The small-sized motor closed slot cast aluminum rotor according to claim 5, characterized in that: the inner wall of the pressing cap (342) is provided with a concave part (3421) close to the opening end, a backing ring (341) is embedded in the concave part (3421), and the outer wall of the other end of the cast aluminum bar (32) is sleeved with the backing ring (341).
7. A small-sized motor closed slot cast aluminum rotor according to claim 1, characterized in that: the rotor punching sheet (2) is provided with a plurality of closed slots (21) distributed along the radial direction of the rotor punching sheet, and the end parts of the closed slots (21) are of arc-shaped structures.
8. A small-sized motor closed slot cast aluminum rotor according to claim 1, characterized in that: and a key groove (23) matched with the key teeth on the rotating shaft (4) is formed in the inner wall of the shaft hole (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279404.0A CN112600322A (en) | 2020-11-16 | 2020-11-16 | Small-size motor closed slot cast aluminum rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279404.0A CN112600322A (en) | 2020-11-16 | 2020-11-16 | Small-size motor closed slot cast aluminum rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112600322A true CN112600322A (en) | 2021-04-02 |
Family
ID=75183018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011279404.0A Pending CN112600322A (en) | 2020-11-16 | 2020-11-16 | Small-size motor closed slot cast aluminum rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112600322A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268049A (en) * | 1985-09-18 | 1987-03-27 | Toshiba Corp | Rotor of squirrel-cage type induction motor |
| JPH11346462A (en) * | 1998-03-31 | 1999-12-14 | Sumitomo Heavy Ind Ltd | Rotor for squirrel-cage induction motor and its manufacture |
| JP2000232760A (en) * | 1999-02-09 | 2000-08-22 | Fuji Electric Co Ltd | Rotor for squirrel-cage induction machine |
| US20060066158A1 (en) * | 2004-09-30 | 2006-03-30 | Pizzichil William P | High mechanical strength electrical connection system and method |
| CN1925283A (en) * | 2005-08-30 | 2007-03-07 | 乐金电子(天津)电器有限公司 | Squirrel-cage rotor for induction motor |
| WO2015121984A1 (en) * | 2014-02-14 | 2015-08-20 | 三菱電機株式会社 | Induction motor rotor |
| CN104868622A (en) * | 2014-02-26 | 2015-08-26 | 住友重机械工业株式会社 | Manufacture Method Of Induction Motor And Rotor |
| CN205986377U (en) * | 2016-08-17 | 2017-02-22 | 国电联合动力技术有限公司 | Squirrel -cage induction machine's rotor squirrel cage structure |
| CN207333415U (en) * | 2017-08-01 | 2018-05-08 | 襄阳先义电力科技有限公司 | A kind of Antisliding bolt |
| CN108494133A (en) * | 2018-06-07 | 2018-09-04 | 苏州贝得科技有限公司 | A kind of novel motor rotor structure |
| CN109067033A (en) * | 2018-08-27 | 2018-12-21 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN109611434A (en) * | 2018-12-04 | 2019-04-12 | 上海保真电子商务有限公司 | It is a kind of to limit antitheft static screw or bolt |
-
2020
- 2020-11-16 CN CN202011279404.0A patent/CN112600322A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268049A (en) * | 1985-09-18 | 1987-03-27 | Toshiba Corp | Rotor of squirrel-cage type induction motor |
| JPH11346462A (en) * | 1998-03-31 | 1999-12-14 | Sumitomo Heavy Ind Ltd | Rotor for squirrel-cage induction motor and its manufacture |
| JP2000232760A (en) * | 1999-02-09 | 2000-08-22 | Fuji Electric Co Ltd | Rotor for squirrel-cage induction machine |
| US20060066158A1 (en) * | 2004-09-30 | 2006-03-30 | Pizzichil William P | High mechanical strength electrical connection system and method |
| CN1925283A (en) * | 2005-08-30 | 2007-03-07 | 乐金电子(天津)电器有限公司 | Squirrel-cage rotor for induction motor |
| WO2015121984A1 (en) * | 2014-02-14 | 2015-08-20 | 三菱電機株式会社 | Induction motor rotor |
| CN104868622A (en) * | 2014-02-26 | 2015-08-26 | 住友重机械工业株式会社 | Manufacture Method Of Induction Motor And Rotor |
| CN205986377U (en) * | 2016-08-17 | 2017-02-22 | 国电联合动力技术有限公司 | Squirrel -cage induction machine's rotor squirrel cage structure |
| CN207333415U (en) * | 2017-08-01 | 2018-05-08 | 襄阳先义电力科技有限公司 | A kind of Antisliding bolt |
| CN108494133A (en) * | 2018-06-07 | 2018-09-04 | 苏州贝得科技有限公司 | A kind of novel motor rotor structure |
| CN109067033A (en) * | 2018-08-27 | 2018-12-21 | 珠海格力电器股份有限公司 | Rotor assembly and motor |
| CN109611434A (en) * | 2018-12-04 | 2019-04-12 | 上海保真电子商务有限公司 | It is a kind of to limit antitheft static screw or bolt |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |