CN104167890B - A kind of rotor end ring structure for double cage motor or deep slot motor - Google Patents
A kind of rotor end ring structure for double cage motor or deep slot motor Download PDFInfo
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- CN104167890B CN104167890B CN201410362570.5A CN201410362570A CN104167890B CN 104167890 B CN104167890 B CN 104167890B CN 201410362570 A CN201410362570 A CN 201410362570A CN 104167890 B CN104167890 B CN 104167890B
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- end ring
- squirrel
- cage
- motor
- cage bar
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Abstract
The invention discloses a kind of rotor end ring structure for double cage motor or deep slot motor, including squirrel-cage bar and iron core (1), the squirrel-cage bar is connected with an end ring (2), and the end ring (2) is as closely as possible close to the iron core (1).Arrange that three thick squirrel-cage bars of more other squirrel-cage bars reliably connect with the end ring (2) in circumferential three antimeres of the end ring (2).The rotor end ring structure for being used for double cage motor or deep slot motor that the present invention cannot be broken or reverse when being a kind of use.
Description
Technical field
The present invention relates to a kind of rotor end ring structure of motor, is used for double cage motor or depth more particularly to one kind
The rotor end ring structure of slot type motor.
Background technology
Squirrel-cage motor simple structure, it is reliable, there is good operation characteristic, although its starting current is larger, rises
Dynamic characteristic is poor, but obtains extensive use in medium and small motor.Squirrel-cage motor starting characteristic not as sliding ring type line around
Motor, the necessary additional starter rheostat of the latter, to reduce starting current and increase starting torque, its construction is more complicated, operation
Trouble.It is general seldom to use except indivedual particular job places.Compare for the widely used starting characteristic of powerful motor
Good double squirrel-cage or deep slot type (trapezoidal, rectangle) motor.Wherein double cage motor has cleverer than deep slot motor
Living, more preferable starting characteristic and be used widely.
Squirrel-cage motor rotor (containing cast-aluminum rotor) end ring its role is to by squirrel-cage bar both ends in rotor with copper (aluminium)
Ring is connected short circuit, therefore is referred to as short-circuit end ring, referred to as end ring.Squirrel-cage bar, outer squirrel-cage bar both ends in conventional double-cage rotor
It is connected short circuit with two copper interior end ring, outer end ring respectively, interior squirrel-cage bar, outer squirrel-cage bar are installed on iron core, interior end ring,
Outer end ring is separated by a certain distance with iron core.
Double cage motor its power it is larger >=200 kilowatts, it is real during rotating speed higher (synchronous rotational speed >=1000 rev/min)
In the operation of border, the outer mouse cage fracture bar Frequent Accidents of rotor (its breakaway poing is mostly at notch).Particularly start frequent, heavy duty
Its squirrel-cage bar fracture accident of workplace (such as power plant coal) is special more.User is seldom electronic using double mouse cages in recent years
Machine.Then generally use deep slot motor.Wherein use is at most trapezoidal deep slot motor.
Ring joint motor is higher (synchronous rotational speed >=1500 rev/min) in rotating speed, electric motor operation for a period of time after, turn
Sub- end ring to direction of rotation it is opposite in terms of reverse, when have end ring connector desoldering phenomenon.
It is a variety of based on more than, occur to solve squirrel-cage bar phenomenon of rupture at double mouse cages, work also for deep slot motor
More reliable, it is necessary to make appropriate innovative design to double mouse cages and deep slot motor rotor end ring.
The content of the invention
What the technical problems to be solved by the invention cannot be broken or reverse when being to provide a kind of use is used for double mouse
The rotor end ring structure of cage motor or deep slot motor.
In order to solve the above technical problem, the present invention provides the rotor for being used for double cage motor or deep slot motor
End ring structure, including squirrel-cage bar and iron core, the squirrel-cage bar is connected with an end ring, and the end ring pastes as closely as possible
The nearly iron core.
The thick mouse of three more other squirrel-cage bars is arranged in circumferential three antimeres of the end ring
Cage bar reliably connects with the end ring.
The end ring is radially fixed in the shaft of motor.
It is radially fixed in the shaft of motor at the end ring symmetrical two or at three.
Interior squirrel-cage bar and outer squirrel-cage bar of the squirrel-cage bar for double cage motor.
The squirrel-cage bar is the trapezoidal squirrel-cage bar of deep slot motor.
The end ring uses single welding with the squirrel-cage bar.
Using the rotor end ring structure for being used for double cage motor or deep slot motor of above-mentioned technical proposal, by double mouse
The inside and outside end ring of cage motor rotor is combined into one, i.e., inside and outside squirrel-cage bar is connected with same end ring.So it is made in electricity
Any influence is not had on (magnetic) road, but end ring is supported by two squirrel-cage bars, and it supports the rigidity of end ring and intensity to be greatly improved,
When motor operates, the shearing force of its outer squirrel-cage bar carrying is greatly reduced, and the possibility of its broken strip substantially reduces.End ring closes two
After one, having ready conditions can make end ring close to iron core, can further reduce the load situation of squirrel-cage bar as far as possible, further reduce
Broken strip phenomenon occurs.Reliably connected with end ring with three squirrel-cage bar deciles more larger than other squirrel-cage bars are uniformly distributed, can be more into one
Step reduces the possibility that other squirrel-cage bars break.Its defect is therefore may produce higher hamonic wave, have to starting torque it is a little not
Profit influences.Radially it will be reliably fixed at end ring symmetrical two or at three in shaft.
Squirrel-cage motor rotor (containing cast-aluminum rotor) end ring its role is to by squirrel-cage bar both ends in rotor with copper (aluminium)
Ring is connected short circuit, therefore is referred to as short-circuit end ring, referred to as end ring.Use respectively at the conventional inside and outside squirrel-cage bar both ends of double-cage rotor
Inside and outside two copper end ring are connected short circuit, and use an end ring instead now while inside and outside squirrel-cage bar both ends are connected short
Road, intrinsically without what difference, but in the specific practice, it may be considered that the thickness of end ring is suitably thinned, can be with
The weight of whole end ring is reduced, so as to reduce the rotary inertia of its end ring, will be greatly improved to control squirrel-cage bar fracture.
In conclusion the present invention cannot be broken or reverse when being a kind of use be used for double cage motor or deep trouth
The rotor end ring structure of formula motor.
Brief description of the drawings
Fig. 1 is the rotor end ring structure diagram of existing double cage motor.
Fig. 2 is the rotor end ring schematic cross-section of existing double cage motor.
Fig. 3 is the rotor end ring structure diagram of double cage motor provided by the invention.
Fig. 4 is the rotor end ring structure diagram of existing deep slot motor.
Fig. 5 is the rotor end ring schematic cross-section of existing deep slot motor.
Fig. 6 is the rotor end ring structure diagram of deep slot motor provided by the invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1 and Fig. 2, interior squirrel-cage bar 6 (circular or rectangle), the outer squirrel-cage bar of the double-cage rotor of double cage motor
3 both ends are connected short circuit with two copper interior end ring 5, outer end ring 4 respectively, and interior squirrel-cage bar 6, outer squirrel-cage bar 3 are installed in iron
On core 1, interior end ring 5, outer end ring 4 are separated by a certain distance with iron core 1, and 7 in Fig. 1 represent breaking part.
Referring to Fig. 3, for double cage motor rotor end ring, the inside and outside end ring of double cage motor rotor is combined into one
A end ring 2, i.e., be connected interior squirrel-cage bar 6 with outer squirrel-cage bar 3 with same end ring 2.So it is made on electric (magnetic) road and does not have
Any influence, but end ring 2 is supported by the i.e. interior squirrel-cage bar 6 of two squirrel-cage bars and outer squirrel-cage bar 3, interior squirrel-cage bar 6 and outer squirrel-cage bar 3
The rigidity and intensity for supportting end ring 2 are greatly improved, and when motor operates, the shearing force that outer squirrel-cage bar 3 carries is greatly reduced, its broken strip
Possibility substantially reduce.
After end ring is combined into one, having ready conditions can make end ring 2 close to iron core 1, can further reduce holding for squirrel-cage bar as far as possible
Power situation, further reduces broken strip phenomenon and occurs.End ring 2 remakes a little changes, by two-sided close to after iron core 1 in welding procedure
Weldering is changed to single welding.To make welding more reliable, internal squirrel-cage bar 6 and outer squirrel-cage bar 3 some chamfereds can be made in advance.
Make bearing further below for the rotor end ring of the double cage motor of its synchronous rotational speed >=1500 rev/min
Reason.
Reliably connected with end ring 2 with three outer squirrel-cage bar 3 deciles more larger than other outer squirrel-cage bars 3 are uniformly distributed, can more into
One step reduces the possibility that other squirrel-cage bars break.Its defect is therefore may produce higher hamonic wave, has to starting torque a little
Adverse effect.
In addition radially will be reliably fixed at end ring 2 symmetrical two or at three in the shaft of motor.
Referring to Fig. 4 and Fig. 5,8 both ends of trapezoidal squirrel-cage bar of deep slot motor are connected short with a copper interior end ring 5
Road, trapezoidal squirrel-cage bar 8 are installed on iron core 1, and trapezoidal squirrel-cage bar 8 is separated by a certain distance with iron core 1, is also easy to produce fracture.
Referring to Fig. 6, for end ring 2 as far as possible close to iron core 1, change welding manner is single-sided welding.To make welding more reliable, thing
Appropriate chamfered first is made to trapezoidal squirrel-cage bar 8.
At synchronous rotational speed >=1500 rev/min, following dispose is made to end ring 2.
Arrange that the thick trapezoidal squirrel-cage bar 8 of three more other trapezoidal squirrel-cage bars 8 and end ring 2 are reliable in 2 antimere of end ring
Connect, can effectively prevent end ring 2 and twist in operation.
It radially will be reliably fixed at end ring 2 symmetrical two or at three in the shaft of motor, be more conducive to end ring 2 and do not occur partially
Move.
Claims (2)
1. a kind of rotor end ring structure for double cage motor or deep slot motor, including squirrel-cage bar and iron core (1), its
It is characterized in：The squirrel-cage bar is connected with an end ring (2), and the end ring (2) is as closely as possible close to the iron core
(1)；The squirrel-cage bar is the interior squirrel-cage bar (6) and outer squirrel-cage bar (3) of double cage motor；In the week of the end ring (2)
Arrange that three thick squirrel-cage bars of more other squirrel-cage bars reliably connect with the end ring (2) to three antimeres；Institute
It is radially fixed in the shaft of motor at the end ring (2) symmetrical two stated or at three；The end ring (2) and the squirrel-cage bar
Using single welding.
2. the rotor end ring structure according to claim 1 for double cage motor or deep slot motor, its feature
It is：The squirrel-cage bar is the trapezoidal squirrel-cage bar (8) of deep slot motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362570.5A CN104167890B (en) | 2014-07-28 | 2014-07-28 | A kind of rotor end ring structure for double cage motor or deep slot motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362570.5A CN104167890B (en) | 2014-07-28 | 2014-07-28 | A kind of rotor end ring structure for double cage motor or deep slot motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104167890A CN104167890A (en) | 2014-11-26 |
| CN104167890B true CN104167890B (en) | 2018-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410362570.5A Active CN104167890B (en) | 2014-07-28 | 2014-07-28 | A kind of rotor end ring structure for double cage motor or deep slot motor |
Country Status (1)
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| CN (1) | CN104167890B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208659U (en) * | 1986-11-08 | 1987-10-07 | 王常春 | Double squirrel-cage motor rotor with break prevention of conduct bar |
| JP3040152B2 (en) * | 1990-10-30 | 2000-05-08 | 松下精工株式会社 | Induction motor rotor |
| JPH09149611A (en) * | 1995-11-20 | 1997-06-06 | Fujitsu General Ltd | Rotor of motor |
| NL1026424C2 (en) * | 2004-06-15 | 2005-12-19 | Siemens Ind Turbomachinery B V | Rotor for electric motor, compressor unit provided with rotor, method for manufacturing a rotor for an electric motor. |
| CN102931793A (en) * | 2011-08-11 | 2013-02-13 | 湖州南洋电机有限公司 | Rotor of squirrel-cage motor |
| CN204030902U (en) * | 2014-07-28 | 2014-12-17 | 大唐湘潭发电有限责任公司 | A kind of rotor end ring structure for double cage motor or deep slot motor |
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2014
- 2014-07-28 CN CN201410362570.5A patent/CN104167890B/en active Active
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| Publication number | Publication date |
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| CN104167890A (en) | 2014-11-26 |
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