CN104753277A - Rotor for squirrel-cage motor and squirrel-cage motor with same - Google Patents
Rotor for squirrel-cage motor and squirrel-cage motor with same Download PDFInfo
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- CN104753277A CN104753277A CN201510112448.7A CN201510112448A CN104753277A CN 104753277 A CN104753277 A CN 104753277A CN 201510112448 A CN201510112448 A CN 201510112448A CN 104753277 A CN104753277 A CN 104753277A
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- cage motor
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Abstract
The invention discloses a rotor for a squirrel-cage motor and a squirrel-cage motor with the same. The rotor for the squirrel-cage motor comprises a rotor iron core, an end ring, balance nails and first balance blocks. The end ring is arranged on the end portion of the rotor iron core, each balance nail is arranged on one side of the end ring far away from the rotor iron core, and the first balance blocks sleeve the balance nails. Each first balance block comprises a plurality of first balance pieces, wherein the outline shape of each first balance piece is noncircular, at least one location protrusion is arranged on each first balance piece, and the location protrusion is formed in the way that the surface of one side of the corresponding first balance piece protrudes towards the surface of the other side. Due to the fact that the outline shape of the first balance blocks is arranged to be noncircular, the mass of the first balance blocks is greater, and the traditional problem that the balance nail is insufficient in height is solved. Further, the location protrusion is arranged on each first balance piece, and relative movement between the plurality of first balance pieces can be limited effectively.
Description
Technical field
The present invention relates to technical field of motor manufacture, especially relate to a kind of rotor for squirrel cage motor and there is its squirrel cage motor.
Background technology
Point out in correlation technique, it is very large that the quality of the equalizing wahser of squirrel cage motor can not be done, when the unbalancing value of rotor is very large, balanced nail is filled it up with and all cannot meet unbalancing value requirement, and increase balanced nail squirrel cage motor parts may be caused to interfere.In addition, the sheet number of the equalizing wahser needed during balance is many, and balance efficiency is low.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of rotor for squirrel cage motor, and the quality of the first balance weight of described rotor can be larger.
Another object of the present invention is to propose a kind of squirrel cage motor with above-mentioned rotor.
The rotor for squirrel cage motor of embodiment, comprising: rotor core according to a first aspect of the present invention; End ring, described end ring is located at the end of described rotor core; Balanced nail, described balanced nail is located at the side away from described rotor core of described end ring; And first balance weight, described first balance weight is set on described balanced nail, described first balance weight comprises multiple first balancing patch, wherein the outer contour shape of each described first balancing patch is formed as non-circular, each described first balancing patch is provided with at least one positioning convex, and described positioning convex is formed towards opposite side surface protrusion by a side surface of described first balancing patch of correspondence.
According to the rotor for squirrel cage motor of the embodiment of the present invention, by being arranged to non-circular by the outer contour shape of the first balance weight, the quality of the first balance weight can be larger, solves the problem of traditional balanced nail height deficiency.And, by arranging positioning convex on the first balancing patch, the relative motion between multiple first balancing patch effectively can be limited.
Alternatively, described positioning convex by the described rotor core of vicinity of described first balancing patch of correspondence a side surface towards described first balancing patch away from described rotor core one side surface protrude formed.
Alternatively, described positioning convex is two and described two positioning convex lay respectively at the both sides of described balanced nail.
Particularly, the center of gravity of described first balance weight and the center superposition of described balanced nail.
Further, one of them in described first balance weight and described end ring is provided with at least one stop nail, another in described first balance weight and described end ring is formed with at least one stop hole, and described stop hole and described stop are followed closely and are coordinated to prevent described first balance weight from rotating around described balanced nail.
Alternatively, described stop nail extends from the side surface away from described rotor core of described end ring towards the direction away from described rotor core, and described stop hole runs through described first balance weight along the thickness direction of described first balance weight.
Alternatively, described stop hole is two and described two stop hole lay respectively at the both sides of described balanced nail, described stop nail and described stop hole one_to_one corresponding.
Alternatively, the free end of balanced nail described in riveting is to limit the movement axially of described balance weight at described balanced nail.
Further, the described rotor for squirrel cage motor comprises further: at least one second balance weight, and described second balance weight is set on described balanced nail, and the outer contour shape of described second balance weight is formed as circular.
The squirrel cage motor of embodiment according to a second aspect of the present invention, comprises the rotor for squirrel cage motor according to the above-mentioned first aspect embodiment of the present invention.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the stereogram of the rotor for squirrel cage motor according to the embodiment of the present invention;
Fig. 2 is the stereogram of the first balance weight shown in Fig. 1;
Fig. 3 is the stereogram of the second balance weight shown in Fig. 1.
Reference numeral:
100: rotor;
1: rotor core; 2: end ring; 21: stop is followed closely; 3: balanced nail;
4: the first balance weights; 41: the first balancing patches;
411: installing hole; 412: positioning convex; 413: stop hole;
5: separator; 6: the second balance weights.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Below with reference to Fig. 1-Fig. 3, the rotor 100 for squirrel cage motor according to the embodiment of the present invention is described.
As shown in Figure 1, the rotor 100 for squirrel cage motor of embodiment according to a first aspect of the present invention, comprises rotor core 1, end ring 2, balanced nail 3 and the first balance weight 4.
End ring 2 is located at the end of rotor core 1.For example, referring to Fig. 1, the axial two ends of rotor core 1 are respectively equipped with an end ring 2, and end ring 2 is formed as annular shape substantially, end ring 2 preferably and rotor core 1 coaxially arrange.
Balanced nail 3 is located at the side away from rotor core 1 of end ring 2, such as, balanced nail 3 can from a side surface axially the extending towards the direction away from rotor core 1 along rotor core 1 away from rotor core 1 of end ring 2, as shown in Figure 1, the now central axis of balanced nail 3 and the plane less perpendicular at end ring 2 place.Alternatively, balanced nail 3 is one-body molded with end ring 2, to facilitate processing and manufacturing, cost-saving.
Wherein, balanced nail 3 can be one, also can be multiple.When balanced nail 3 is multiple, the preferably uniform intervals distribution in the circumference of end ring 2 of multiple balanced nail 3.Thus, when the unbalancing value of balancing rotor 100, the first balance weight 4 can be placed on corresponding balanced nail 3.Be appreciated that the number of balanced nail 3 and the arrangement etc. on end ring 2 can require and adaptive change according to real balance, the present invention does not do concrete restriction to this.
Further, be equipped with a separator 5 between two often adjacent balanced nails 3, separator 5 can extend along the radial direction of rotor core 1, and the separator 5 of each balanced nail 3 both sides is preferably symmetrical about this balanced nail 3.
First balance weight 4 is set on balanced nail 3, and the first balance weight 4 is for the amount of unbalance of balancing rotor 100.First balance weight 4 is formed with through installing hole 411, and the free end (such as, the upper end in Fig. 1) of balanced nail 3 is adapted to pass through installing hole 411, thus the first balance weight 4 can be set on balanced nail 3.
Specifically, the first balance weight 4 comprises multiple first balancing patch 41, first balance weight 4 and can form by multiple first balancing patch 41 is stacked.Such as, the first balance weight 4 can be formed by sheet metal punching.Be appreciated that number of the first balancing patch 41 etc. can according to actual requirement adaptive change, the present invention does not make particular determination to this.
Wherein, the outer contour shape of each first balancing patch 41 is formed as non-circular, for example, referring to Fig. 1 and the outer contour shape of composition graphs 2, first balance weight 4 is formed as the part of annular.Certainly, the outer contour shape of the first balance weight 4 can also be formed as trapezoidal, cydariform or Long Circle etc.
First balance weight 4 can come on stator punching or rotor punching height punch die, overlaps and rushes out, reach slug detect with stator punching or rotor punching, does not need to increase production hour in addition simultaneously, with low cost.
Thus, by adopting the first balance weight 4 of non-circular shape, because the area of the first balance weight 4 is comparatively large, thus add the quality of the first balance weight 4, the balanced nail 3 of needs is highly little, when the unbalancing value of rotor 100 is very large, without the need to balanced nail 3 being filled it up with the requirement that also can meet unbalancing value, and, when meeting unbalancing value requirement, even can reduce the height of balanced nail 3, thus there will not be the situation that the parts of squirrel cage motor are interfered.
In addition, the thickness of the first balance weight 4 can be thinner, can reduce the difficulty of processing of the first balance weight 4 like this, thus reduce cost, and the sheet number of the balancing patch needed during balance is less, thus can improve the dynamic balancing efficiency of rotor 100.
Wherein, each first balancing patch 41 is provided with at least one positioning convex 412, and positioning convex 412 is formed towards opposite side surface protrusion by a side surface of the first balancing patch 41 of correspondence.Such as, with reference to Fig. 1 composition graphs 2, positioning convex 412 by the adjacent rotor iron core 1 of the first balancing patch 41 of correspondence a side surface towards the first balancing patch 41 away from rotor core 1 one side surface protrude formed, now positioning convex 412 is form of grooves at a side surface of the adjacent rotor iron core 1 of the first balancing patch 41 of correspondence, it is salient point form at the side surface away from rotor core 1 of the first balancing patch 41, thus when multiple first stacked placement of balancing patch 41, the salient point of one of them in multiple first balancing patch 41 can be contained in the groove of the first balancing patch 41 be adjacent, thus, the friction between the stators and rotators 100 causing squirrel cage motor outside rotor 100 is exceeded after can preventing multiple first balancing patch 41 from rivetting, and the relative motion effectively defined between multiple first balancing patch 41, thus extend the useful life of squirrel cage motor.
Certainly, positioning convex 412 can also by the first balancing patch 41 of correspondence away from rotor core 1 a side surface towards the first balancing patch 41 adjacent rotor iron core 1 one side surface protrude formed, now a side surface of the adjacent rotor iron core 1 of positioning convex 412 can be formed as plane, to ensure that the first balance weight 4 can be placed on end ring 2 reposefully.
Further, can also be linked into an integrated entity by positioning convex 412 between two often adjacent the first balancing patches 41 in multiple first balancing patch 41, such as, positioning convex 412 interference fit between two adjacent the first balancing patches 41.
Alternatively, positioning convex 412 is two, and two positioning convex 412 lay respectively at the both sides of balanced nail 3.As shown in Figure 2, two positioning convex 412 are formed as the side at adjacent rotor iron core 1 center of the first balancing patch 41, and two centers of positioning convex 412 about balanced nail 3 and the line of centres symmetry of rotor core 1.Be appreciated that the number of positioning convex 412 and the concrete setting position on the first balancing patch 41 etc. can according to actual requirement adaptive change, to reach better locating effect.
According to the rotor 100 for squirrel cage motor of the embodiment of the present invention, by being arranged to non-circular by the outer contour shape of the first balance weight 4, the quality of the first balance weight 4 can be larger, solves the problem that traditional balanced nail 3 is highly not enough.And, by arranging positioning convex 412 on the first balancing patch 41, the relative motion between multiple first balancing patch 41 effectively can be limited.
According to a further embodiment of the invention, one of them in first balance weight 4 and end ring 2 is provided with at least one stop nail 21, another in first balance weight 4 and end ring 2 is formed with at least one stop hole 413, and stop hole 413 and stop are followed closely 21 and are coordinated to prevent the first balance weight 4 from rotating around balanced nail 3.Here following two kinds of situations are comprised: the first, at least one stop nail 21 is located on the first balance weight 4, and at least one stop hole 413 is formed on end ring 2; The second, at least one stop nail 21 is located on end ring 2, and at least one stop hole 413 is formed on the first balance weight 4.
Specifically, such as in the example of fig. 1, stop nail 21 to be located on end ring 2 and to be spaced apart from each other with balanced nail 3, the height of stop nail 21 is less than the height of balanced nail 3, stop nail 21 extends from the side surface away from rotor core 1 of end ring 2 towards the direction away from rotor core 1, stop nail 21 is preferred and end ring 2 is one-body molded, stop hole 413 runs through the first balance weight 4 along the thickness direction of the first balance weight 4, the free end (upper end such as, in Fig. 1) of stop nail 21 is adapted to pass through the stop hole 413 of the first balance weight 4.Thus, by arranging stop nail 21 and stop hole 413, turning to after can effectively preventing the first balance weight 4 from rivetting and exceed rotor core 1 and interfere with other parts of squirrel cage motor.
Further, stop hole 413 is two, two stop hole 413 are formed in the neighboring place of the adjacent rotor iron core 1 of the first balance weight 4, and two stop hole 413 lay respectively at the both sides of balanced nail 3, preferably, two centers of stop hole 413 about balanced nail 3 and the line of centres symmetry of rotor core 1.Stop nail 21 and stop hole 413 one_to_one corresponding, the number of now stop nail 21 is two.
Certainly, the stop nail 21 cooperatively interacted and stop hole 413 also can be only set in the side of balanced nail 3.Be appreciated that stop nail 21 and stop hole 413 number can according to actual requirement adaptive change, to meet actual requirement better.
During balance, the quality of adding as required, select the first balancing patch 41 of respective numbers, and be mounted on the balanced nail 3 of end ring 2 relevant position, the stop hole 413 of first balancing patch 41 both sides nearest with rotor core 1 follows closely 21 to the stop on good end ring 2, the positioning convex 412 of the first balancing patch 41 both sides that all the other and rotor core 1 are distant is enclosed within on the positioning convex 412 of the first balancing patch 41 both sides of rotor core 1 close together, after reaching balance requirement, balanced nail 3 is rivetted, namely the free end of riveting balanced nail 3 (such as, upper end in Fig. 1) to limit the movement axially of balance weight 4 at balanced nail 3.
According to one embodiment of present invention, the center of gravity of the first balance weight 4 and the center superposition of balanced nail 3, now the center of gravity of the first balance weight 4 overlaps with the center of gravity of installing hole 411.Thus, during balance, before not rivetting, quality and the counterweight equivalence value ratio of the first balance weight 4 are 1:1, do not need other conversion.
With reference to Fig. 1 composition graphs 3, the rotor 100 for squirrel cage motor comprises further: at least one second balance weight 6, second balance weight 6 is set on balanced nail 3, and the outer contour shape of the second balance weight 6 is formed as circular.Thus, by adopting the first balance weight 4 and the second balance weight 6 simultaneously, the weight mass of needs can be formed better.
According to the rotor 100 for squirrel cage motor of the embodiment of the present invention, the height of balanced nail 3 can reduce, and can improve the dynamic balancing efficiency of rotor 100.
The squirrel cage motor of embodiment according to a second aspect of the present invention, comprises the rotor 100 for squirrel cage motor according to the above-mentioned first aspect embodiment of the present invention.
According to the squirrel cage motor of the embodiment of the present invention other form and operation be all known to those skilled in the art, be not described in detail here.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. for a rotor for squirrel cage motor, it is characterized in that, comprising:
Rotor core;
End ring, described end ring is located at the end of described rotor core;
Balanced nail, described balanced nail is located at the side away from described rotor core of described end ring; And
First balance weight, described first balance weight is set on described balanced nail, described first balance weight comprises multiple first balancing patch, wherein the outer contour shape of each described first balancing patch is formed as non-circular, each described first balancing patch is provided with at least one positioning convex, and described positioning convex is formed towards opposite side surface protrusion by a side surface of described first balancing patch of correspondence.
2. the rotor for squirrel cage motor according to claim 1, it is characterized in that, described positioning convex by the described rotor core of vicinity of described first balancing patch of correspondence a side surface towards described first balancing patch away from described rotor core one side surface protrude formed.
3. the rotor for squirrel cage motor according to claim 1, is characterized in that, described positioning convex is two and described two positioning convex lay respectively at the both sides of described balanced nail.
4. the rotor for squirrel cage motor according to claim 1, is characterized in that, the center of gravity of described first balance weight and the center superposition of described balanced nail.
5. the rotor for squirrel cage motor according to claim 1, it is characterized in that, one of them in described first balance weight and described end ring is provided with at least one stop nail, another in described first balance weight and described end ring is formed with at least one stop hole, and described stop hole and described stop are followed closely and are coordinated to prevent described first balance weight from rotating around described balanced nail.
6. the rotor for squirrel cage motor according to claim 5, it is characterized in that, described stop nail extends from the side surface away from described rotor core of described end ring towards the direction away from described rotor core, and described stop hole runs through described first balance weight along the thickness direction of described first balance weight.
7. the rotor for squirrel cage motor according to claim 6, is characterized in that, described stop hole is two and described two stop hole lay respectively at the both sides of described balanced nail, described stop nail and described stop hole one_to_one corresponding.
8. the rotor for squirrel cage motor according to claim 1, is characterized in that, the free end of balanced nail described in riveting is to limit the movement axially of described balance weight at described balanced nail.
9. the rotor for squirrel cage motor according to any one of claim 1-8, is characterized in that, comprise further:
At least one second balance weight, described second balance weight is set on described balanced nail, and the outer contour shape of described second balance weight is formed as circular.
10. a squirrel cage motor, is characterized in that, comprises the rotor for squirrel cage motor according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112448.7A CN104753277B (en) | 2015-03-13 | 2015-03-13 | For the rotor of squirrel cage motor and with its squirrel cage motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112448.7A CN104753277B (en) | 2015-03-13 | 2015-03-13 | For the rotor of squirrel cage motor and with its squirrel cage motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104753277A true CN104753277A (en) | 2015-07-01 |
| CN104753277B CN104753277B (en) | 2018-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510112448.7A Active CN104753277B (en) | 2015-03-13 | 2015-03-13 | For the rotor of squirrel cage motor and with its squirrel cage motor |
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| CN (1) | CN104753277B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462347A (en) * | 2017-12-28 | 2018-08-28 | 杭州奇虎节能技术有限公司 | The super energy saving rare earth permanent-magnet synchronization motor of ultra high efficiency |
| WO2019197799A1 (en) * | 2018-04-13 | 2019-10-17 | Universal Balancing Limited | Device for attaching balancing weights to a rotor |
| CN110880848A (en) * | 2018-09-05 | 2020-03-13 | 保时捷股份公司 | Method for balancing a rotor of an electric machine |
| WO2023050526A1 (en) * | 2021-09-29 | 2023-04-06 | 进越机电有限公司 | Balancing structure for oil-immersed motor rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462347A (en) * | 2017-12-28 | 2018-08-28 | 杭州奇虎节能技术有限公司 | The super energy saving rare earth permanent-magnet synchronization motor of ultra high efficiency |
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| WO2023050526A1 (en) * | 2021-09-29 | 2023-04-06 | 进越机电有限公司 | Balancing structure for oil-immersed motor rotor |
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| CN104753277B (en) | 2018-06-15 |
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