CN103066784A - Induction motor and rotor of induction motor - Google Patents
Induction motor and rotor of induction motor Download PDFInfo
- Publication number
- CN103066784A CN103066784A CN2012103670769A CN201210367076A CN103066784A CN 103066784 A CN103066784 A CN 103066784A CN 2012103670769 A CN2012103670769 A CN 2012103670769A CN 201210367076 A CN201210367076 A CN 201210367076A CN 103066784 A CN103066784 A CN 103066784A
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- Prior art keywords
- strengthening part
- induction motor
- rotating shaft
- short
- rotor
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- 230000006698 induction Effects 0.000 title claims abstract description 47
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 238000005728 strengthening Methods 0.000 claims description 105
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 abstract description 7
- 230000003014 reinforcing effect Effects 0.000 abstract 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000001816 cooling Methods 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 229910000975 Carbon steel Inorganic materials 0.000 description 9
- 239000004411 aluminium Substances 0.000 description 9
- 239000010962 carbon steel Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910000990 Ni alloy Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Classifications
-
- 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
- H02K17/20—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having deep-bar rotors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides an induction motor and a rotor of the induction motor which can rotate free of barrier in high temperature condition. In order to solve the above problem, the induction motor and the rotor of the induction motor are formed by comprising a short circuit ring, a first reinforcing part and a second reinforcing part. The short circuit ring enables multiple conductors to be short-circuit at transverse planes of various barrel-shaped rotor iron cores. The multiple conductors surround a rotating shaft of the rotor iron cores and are configured in a shape of a ring. The first reinforcing part, relative to the short circuit ring, is embedded and jointed together. The second reinforcing part, relative to the first reinforcing part, is embedded and jointed together and is also fixed relatively to the rotating shaft.
Description
Technical field
Disclosed execution mode relates to the rotor of induction motor and induction motor.
Background technology
In the past, known possess the two ends of conductor respectively with the rotor of the short-circuited conducting sleeve short circuit of ring-type, the i.e. induction motor of what is called " cage rotor ".
Described induction motor possesses strengthening part mostly, and described strengthening part is pressed short-circuited conducting sleeve and engaged with respect to rotating shaft from the bearing of trend of rotating shaft.Described strengthening part plays the effect that flies out and be out of shape that prevents the short-circuited conducting sleeve that caused by centrifugal force.
In addition, also can not hinder flowing of magnetic flux for described strengthening part is contacted with short-circuited conducting sleeve, described strengthening part often adopts nonmagnetic substance.For example, in patent documentation 1, the rotor of the induction motor that possesses the strengthening part that is formed by nonmagnetic nickel alloy is disclosed.
Patent documentation 1: No. 3701413 communique of Japan Patent
Yet, in existing induction motor, even there is further room for improvement in this respect that also can turn round without barrier in the situation that produces heat because of High Rotation Speed and long-term rotation etc. from rotor.This is because because the difference of short-circuited conducting sleeve, rotating shaft and strengthening part coefficient of linear expansion separately, for example exist that strengthening part hinders rotating shaft because hot and to extending axially the possibility that makes the rotating shaft bending.
In addition, described problem not only occurs in the situation that produces heat from rotor, and can occur too in the situation of the induction motor that turns round under hot environment.
Summary of the invention
A mode of execution mode is exactly In view of the foregoing to finish, even its purpose is to provide the induction motor that also can turn round without barrier and the rotor of induction motor under hot environment.
The induction motor that a mode of execution mode relates to possesses short-circuited conducting sleeve, the first strengthening part and the second strengthening part.Short-circuited conducting sleeve is used for making a plurality of conductors that the rotating shaft around the tubular rotor core is configured to ring-type respectively in the end face short circuit of described rotor core.The first strengthening part is embedded in described short-circuited conducting sleeve.The second strengthening part is embedded in described the first strengthening part and is fixed in described rotating shaft.
According to a mode of execution mode, even under hot environment, also can turn round without barrier.
Description of drawings
Fig. 1 is the longitudinal section of the structure example of the induction motor that relates to of expression execution mode.
Fig. 2 is the outside drawing of the rotor that relates to of execution mode.
Fig. 3 A is the cutaway view of rotor core.
Fig. 3 B is the front view of rotor core.
Fig. 4 is the enlarged drawing of short circuit section.
Fig. 5 is the longitudinal section of the structure example of the rotor that relates to of expression variation.
Fig. 6 is the front view of the second strengthening part.
Fig. 7 is the figure that the configuration example of existing short circuit section is shown.
Label declaration
1: induction motor;
2: motor cover;
3: motor frame;
6: stator;
7: rotor;
8: terminal box;
9: blower-casting;
21: air admission hole;
31: the first radiating fins;
32: the second radiating fins;
41: load opposition side carriage;
42: the load-side carriage;
51: load opposition side bearing;
52: the load-side bearing;
61: stator core;
62: stator winding;
71: rotor core;
72: rotating shaft;
73: short circuit section;
74: sleeve;
91: cooling fan;
92: the cooling air guiding piece;
93: intercommunicating pore;
94: steam vent;
711: groove;
712: conductor;
731: short-circuited conducting sleeve;
732: the first strengthening parts;
733: the second strengthening parts;
733a: pilot hole.
Embodiment
Below, describe the execution mode of the rotor of the disclosed induction motor of the application and induction motor in detail with reference to accompanying drawing.In addition, the execution mode shown in below the present invention is not subjected to limits.
The structure example of the induction motor that execution mode relates at first, is described with Fig. 1.Fig. 1 is the sectional view of the structure example of the induction motor 1 that relates to of expression execution mode.In addition, comprise take vertical upwards as the three-dimensional orthogonal coordinate system of the Z axis of positive direction for the ease of understanding explanation, in Fig. 1, illustrating.Described orthogonal coordinate system illustrates below in other accompanying drawings that adopt and sometimes also can illustrate.
And, below, there is following situation: for by a plurality of structural elements that consist of, only parts in a plurality of are marked with label, and to the mark of other each component omission labels.In said case, marking labelled parts is identical with the structure of other each parts.
As shown in Figure 1, induction motor 1 possesses: motor cover 2, motor frame 3, load opposition side carriage 41, load-side carriage 42, load opposition side bearing 51, load-side bearing 52, stator 6, rotor 7, terminal box 8 and blower-casting 9.
And motor frame 3 possesses the first radiating fin 31 and the second radiating fin 32 at its outer peripheral face.
Load opposition side carriage 41 is installed in the load opposition side peristome of motor frame 3, and is used for keeping the load opposition side bearing 51 of ring-type.Similarly, load-side carriage 42 is installed in the load-side peristome of motor frame 3, and is used for keeping the load-side bearing 52 of ring-type.
And, though not shown, be connected with for stator wire from the three-phase power that drives usefulness to stator 6 that supply with at stator 6.
And, relatively dispose rotor 7 in interior all sides of stator 6 across predetermined space.Rotor 7 possesses rotor core 71, rotating shaft 72 and short circuit section 73.
Rotating shaft 72 is formed by carbon steel etc., connects rotor core 71 ground settings along the Y-direction among the figure.At this moment, the outer peripheral face of rotating shaft 72 is fixed in the inner peripheral surface of rotor core 71 by shrink fit etc.
In addition, between the inner peripheral surface of the outer peripheral face of described rotating shaft 72 and rotor core 71, sometimes also can be folded with sleeve described later.Utilize in the back Fig. 5 to narrate for the details of this point.And below, rotating shaft 72 is made of carbon steel.
And rotating shaft 72 is by above-mentioned load opposition side bearing 51 and the supporting of load-side bearing 52 axles.
And short circuit section 73 comprises: with respect to the first chimeric strengthening part of short-circuited conducting sleeve (below, be recited as " the first strengthening part "; Chimeric and fixing with respect to rotating shaft 72 the second strengthening part with respect to described the first strengthening part (below, be recited as " the second strengthening part ").Details for described short circuit section 73 utilizes the later figure of Fig. 2 to narrate in the back.
In addition, below, only the short circuit section 73 of the load-side end face of rotor core 71 is marked with label and describes, the short circuit section of not overload opposition side end face also is same structure.
Terminal box 8 is the frameworks be used to the external connection terminals of taking in induction motor 1, and it is installed in load opposition side carriage 41.
Blower-casting 9 is be used to the framework of taking in cooling fan 91, and it is installed on motor frame 3.And blower-casting 9 has for the intercommunicating pore 93 that is communicated with motor frame 3 with for the steam vent 94 of discharging cooling air.
Cooling fan 91 is installed in the blower-casting 9, is used for discharging from steam vent 94 by the cooling air that intercommunicating pore 93 sucks.In addition, between cooling fan 91 and intercommunicating pore 93, be provided with for the cooling air guiding piece 92 that guides cooling air.
Below, use the rotor 7 of the induction motor 1 that Fig. 2 later figure mainly relates to the execution mode that uses Fig. 1 to illustrate to describe.In addition, shown in the explanation of use Fig. 3 A of narrating in the back of A-A section shown in Figure 1.
Fig. 2 is the outside drawing of the rotor 7 that relates to of execution mode.Although repeat with the explanation of using Fig. 1, but as shown in Figure 2, rotor 7 possesses rotor core 71, rotating shaft 72 and short circuit section 73.
At this, with Fig. 3 A the internal structure of rotor core 71 is described.Fig. 3 A is the cutaway view of rotor core 71.In addition, Fig. 3 A illustrates the A-A section shown in Fig. 1.
As shown in Figure 3A, rotor core 71 has the groove 711 that is configured to ring-type around rotating shaft 72.Be cast into as described above respectively the conductor 712 that is consisted of by magnetic materials such as aluminium at described groove 711.In addition, below, conductor 712 is made of aluminium.
At this, the mode of groove 711 (that is, Y direction) perforation rotor core 71 with vertically arranges, and the end of conductor 712 is exposed to the end face of rotor core 71.
In addition, at Fig. 3 A(and Fig. 3 B described later) only illustrate four grooves 711, and omitted the diagram of other grooves 711.Therefore, Fig. 3 A(and Fig. 3 B described later) be not particularly limited the number of groove 711.Similarly, do not limit the section shape of groove 711 yet.
Get back to the explanation of Fig. 2, short circuit section 73 is described.As shown in Figure 2, short circuit section 73 possesses short-circuited conducting sleeve 731, the first strengthening part 732 and the second strengthening part 733.Short-circuited conducting sleeve 731 similarly is made of aluminium with conductor 712, is integrally formed at end face and the conductor 712 of rotor core 71 by aluminium die casting.
Fig. 3 B illustrates the front view of described situation.Shown in Fig. 3 B, by aluminium die casting and integrally formed, and short-circuited conducting sleeve 731 is located at the both ends of the surface of rotor core 71 to short-circuited conducting sleeve 731 with conductor 712, and described conductor 712 is cast in the groove 711 that disposes in the form of a ring.
That is, short-circuited conducting sleeve 731 with conductor 712 at its two terminal shortcircuit.Thus, formed " cage rotor (cage rotor) ".
Get back to the explanation of Fig. 2, the first strengthening part 732 is described.As shown in Figure 2, the first strengthening part 732 is the ring-type strengthening parts that are installed on short-circuited conducting sleeve 731.At this moment, as shown in Figure 4, the first strengthening part 732 is provided with axial i1 ground, space and installs between the outer circumferential side of short circuit section 73 and short-circuited conducting sleeve 731.
The second strengthening part 733 is the ring-type strengthening parts that are installed on the first strengthening part 732 and are fixed in rotating shaft 72.At this moment, the second strengthening part 733 is provided with axial i2 ground, space and installs between the outer circumferential side of short circuit section 73 and the first strengthening part 732.
In addition, the first strengthening part 732 is formed by nonmagnetic substances such as stainless steels, and the second strengthening part 733 is formed by carbon steel etc.Narrate in the explanation of Fig. 4 below utilizing in the back for the details of this point.
Fig. 4 is the enlarged drawing of short circuit section 73 shown in Figure 1.Although repeat with the explanation of using Fig. 2, but as shown in Figure 4, the first strengthening part 732 is installed on short-circuited conducting sleeve 731 at the outer circumferential side of short circuit section 73 with being provided with axial space i1.In addition, at this moment, be provided with equally axial space i3 in interior all sides of short circuit section 73.
And described installation is undertaken by interference fits or the interference fit of fitting portion f1.At this moment, as shown in Figure 4, the first strengthening part 732 is entrenched in the outer circumferential side of short-circuited conducting sleeve 731.
And the second strengthening part 733 is installed on the first strengthening part 732 at the outer circumferential side of short circuit section 73 with being provided with axial space i2.In addition, at this moment, be provided with equally axial space i4 in interior all sides of short circuit section 73.
And described installation is undertaken by interference fits or the interference fit of fitting portion f2.At this moment, as shown in Figure 4, the first strengthening part 732 is embedded in along interior all sides of the protuberance of the ring-type of the outer rim setting of the second strengthening part 733.
And the second strengthening part 733 also is fixed on the outer peripheral face of rotating shaft 72.Described fixedly is that shrink fit etc. by fitting portion f3 is carried out.
At this, use Fig. 7 that the structure example of the existing short circuit 73' of section is narrated.Fig. 7 is the figure that the configuration example of the existing short circuit 73' of section is shown.
As shown in Figure 7, the existing short circuit 73' of section possesses short-circuited conducting sleeve 731 and strengthening part 733'.And strengthening part 733' is embedded in short-circuited conducting sleeve 731 and rotating shaft 72.
And for example, short-circuited conducting sleeve 731 adopts aluminium, and strengthening part 733' adopts the nonmagnetic nickel alloy that flows that can not hinder the magnetic flux that flows through short-circuited conducting sleeve 731 or titanium etc., and rotating shaft 72 adopts carbon steel.
At this, be conceived to form respectively the coefficient of linear expansion of the material of short-circuited conducting sleeve 731, strengthening part 733' and rotating shaft 72, in the past, there was following relation in the coefficient of linear expansion of these parts: " short-circuited conducting sleeve 731〉rotating shaft 72〉strengthening part 733' ".
Thus, for example, have following danger: rotating shaft 72 to axial line expand (that is, the elongation to the Y-axis positive direction that is caused by heat) stopped than the little strengthening part 733' of described rotating shaft 72 coefficient of linear expansion, thereby make rotating shaft 72 bendings.And, thus, exist and rotate the danger of rocking and vibrating.
And known nickel alloy and titanium etc. generally are expensive material, and processing charges are high.Therefore, the existing short circuit 73' of section is also uneconomical aspect cost.
Get back to the explanation of Fig. 4.Therefore, in the rotor 7 that present embodiment relates to, strengthening part is made of the first strengthening part 732 and the second strengthening part 733, and is combined into coefficient of linear expansion and satisfies following relation: " short-circuited conducting sleeve 731〉the first strengthening part 732〉the second strengthening part 733 ≈ rotating shafts 72 ".
Specifically, the first strengthening part 732 that contacts with short-circuited conducting sleeve 731 adopts the little cheap nonmagnetic substance of short-circuited conducting sleeve that coefficient of linear expansion consist of than aluminium 731.For example, below, the first strengthening part 732 is made of the stainless steel that satisfies described condition.
And, the material that the first strengthening part 732 that the second strengthening part 733 adopts coefficient of linear expansion to consist of than stainless steel is little and roughly the same with rotating shaft 72.For example, below, the second strengthening part 733 is made of the carbon steel that satisfies described condition.
And, the first strengthening part 732 is formed for example in axial (that is, Y-direction.Below identical) form thin grade, can access the shape of predetermined elasticity.
And, as mentioned above, be provided with space i1～i4 in the axial front and back of the first strengthening part 732.
In the situation that forms this kind structure, at first, the first strengthening part 732 is made of nonmagnetic substance, therefore can not hinder flowing of the magnetic flux that flows through short-circuited conducting sleeve 731.Therefore and the first strengthening part 732 has predetermined elasticity, can flexibly absorb line expansion poor of short-circuited conducting sleeve 731 and the second strengthening part 733.
Therefore and the first strengthening part 732 has space i1～i4 in axial front and back, by sliding in the scope of described space i1～i4, can absorb line expansion poor of short-circuited conducting sleeve 731 and the second strengthening part 733.
And the coefficient of linear expansion of the first strengthening part 732 is less than the coefficient of linear expansion of short-circuited conducting sleeve 731, therefore can press towards negative direction from the positive direction of Y-axis short-circuited conducting sleeve 731 reliably.Similarly, the coefficient of linear expansion of the second strengthening part 733 is less than the coefficient of linear expansion of the first strengthening part 732, therefore can press towards negative direction from the positive direction of Y-axis the first strengthening part 732 reliably.
And the second strengthening part 733 has the coefficient of linear expansion roughly the same with rotating shaft 72, therefore can not hinder rotating shaft 72 and expand to axial line.That is, because rotating shaft 72 can be crooked, can prevent that therefore rotation from rocking and vibrate.
Therefore, the rotor 7 that relates to according to execution mode and possess the induction motor 1 of described rotor 7 is even also can turn round without barrier under hot environment.And, by adopting stainless steel and carbon steel and so on common and cheap material, can eliminate the uneconomical of cost aspect.
In addition, in above-mentioned example, the coefficient of linear expansion of each parts is narrated for the situation of the relation of " short-circuited conducting sleeve 731〉the first strengthening part 732〉the second strengthening part 733 ≈ rotating shafts 72 ", but also can be made adjacent parts have identical coefficient of linear expansion.Therefore, also can adopt the combination of the relation of satisfied " short-circuited conducting sleeve 731 〉=the first strengthening parts 732 〉=the second strengthening parts 733 ≈ rotating shafts 72 ".
In addition, so far, having enumerated the situation that rotating shaft 72 is directly fixed on the inner peripheral surface of rotor core 71 is that example is illustrated, but also exists rotating shaft 72 indirectly to be fixed in the situation of rotor core 71 across sleeve.Utilize Fig. 5 that described variation is described.
Fig. 5 is the longitudinal section of the structure example of the rotor 7A that relates to of expression variation.In addition, the structure example of the rotor 7 of the induction motor 1 that Fig. 5 relates to corresponding to execution mode shown in Figure 1 is identical with Fig. 1 except the point that also possesses sleeve 74, therefore both common explanations is suitably omitted.
As shown in Figure 5, the rotor 7A that relates to of variation also possesses sleeve 74.Sleeve 74 is links of tubular, and its outer peripheral face is fixedly connected on the inner peripheral surface of rotor core 71 by shrink fit etc.
In addition, preferably, sleeve 74 is formed by coefficient of linear expansion and rotating shaft 72 roughly the same materials.At this, rotating shaft 72 is made of carbon steel equally.
And the outer peripheral face of rotating shaft 72 is fixed on the inner peripheral surface of sleeve 74.That is, rotating shaft 72 is fixed in rotor core 71 indirectly across sleeve 74.
In addition, at this, as sleeve 74, adopt to be axially arranged with the poor poor sleeve of band ladder of ladder, thus, can improve the rigidity of rotating shaft 72 and can not damage the running accuracy of rotating shaft 72.
And in the situation that so is provided with sleeve 74, the second strengthening part 733 is fixed in the outer peripheral face of sleeve 74 by shrink fit etc.In other words, the second strengthening part 733 is fixed in rotating shaft 72(with reference to the fitting portion f3' among the figure indirectly across the sleeve 74 with rotating shaft 72 external ground settings).
At this, the second strengthening part 733 is similarly carbon steel with rotating shaft 72 and sleeve 74, and therefore identical with the situation of using Fig. 4 explanation, the line that can not hinder rotating shaft 72 and sleeve 74 expands.That is, because rotating shaft 72 and sleeve 74 can be crooked, can prevent that therefore rotation from rocking and vibrate.
Like this, even be provided with the structure of sleeve 74, also can provide the induction motor 1 that can under hot environment, turn round without barrier.In addition, in the situation that is provided with sleeve 74, can after rotating shaft 72 is installed, therefore for the user, the high advantage of the degree of freedom of the selection of rotating shaft 72 is arranged.
In addition, the rotation of induction motor 1 is rocked and is vibrated not only and occurs in the situation of rotating shaft 72 bendings, also can occur in situation of the balanced deflection of rotor 7 etc.For to should situation, the second strengthening part 733 be also used as the counterweight of rotor 7.Utilize Fig. 6 that this point is described.
Fig. 6 is the front view of the second strengthening part 733.As shown in Figure 6, the second strengthening part 733 possesses the pilot hole 733a along circumferential array.Pilot hole 733a is for the department of assembly for the balance element assembling that rotor 7 is averaged out.
At this, for example, adopting in the situation of screw as balance element, described screw is screwed together in pilot hole 733a.
And, for example, adopting in the situation of groove mud (putty) as balance element, described putty is filled into pilot hole 733a.
In addition, figure 6 illustrates pilot hole 733a edge and circumferentially equally spaced be provided with 12 example, but do not limit number and the interval of pilot hole 733a.And, similarly, do not limit the shape of pilot hole 733a yet.
As mentioned above, the induction motor that relates to of execution mode and the rotor of induction motor possess short-circuited conducting sleeve, the first strengthening part and the second strengthening part.Short-circuited conducting sleeve makes a plurality of conductors in the end face short circuit of the rotor core of tubular, and described a plurality of conductors rotating shaft unshakable in one's determination that rotates is configured to ring-type.The first strengthening part is embedded in short-circuited conducting sleeve.The second strengthening part is embedded in the first strengthening part and is fixed in rotating shaft.
Therefore, the induction motor that relates to according to execution mode and the rotor of induction motor are even also can turn round without barrier under hot environment.
In addition, in the above-described embodiment, be aluminium to conductor and short-circuited conducting sleeve, the first strengthening part is stainless steel, the second strengthening part is that the situation of carbon steel is illustrated, but does not certainly limit the material of described each parts.And, in the above-described embodiment, show for example the induction motor of air cooling mode, but also can be the liquid cooling mode.
Other effects and variation can easily be derived by those skilled in the art.Thus, the more widely form of the present invention specific detailed content and the representational execution mode that are not showed as described below and record and narrate limits.The conceptual spirit or scope ground that therefore, can not break away from by the invention of appended claim and the defined blanket property of equivalent thereof carries out various changes.
Claims (8)
1. an induction motor is characterized in that,
Described induction motor possesses:
Short-circuited conducting sleeve, described short-circuited conducting sleeve are used for making a plurality of conductors that the rotating shaft around the tubular rotor core is configured to ring-type respectively in the end face short circuit of described rotor core;
The first strengthening part, described the first strengthening part is embedded in described short-circuited conducting sleeve; And
The second strengthening part, described the second strengthening part are embedded in described the first strengthening part and are fixed in described rotating shaft.
2. induction motor according to claim 1 is characterized in that,
Described the first strengthening part is embedded in the outer circumferential side of described short-circuited conducting sleeve, and is embedded in interior all sides of the annular convex that arranges at described the second strengthening part.
3. induction motor according to claim 1 and 2 is characterized in that,
Described the first strengthening part is made of nonmagnetic substance, and forms the shape that can access predetermined elasticity.
4. the described induction motor of any one according to claim 1～3 is characterized in that,
Described the second strengthening part is directly fixed on the outer peripheral face of described rotating shaft, perhaps indirectly is fixed in described rotating shaft across the sleeve with the external setting of described rotating shaft.
5. induction motor according to claim 4 is characterized in that,
Described the second strengthening part has the coefficient of linear expansion roughly the same with described rotating shaft and described sleeve.
6. the described induction motor of any one according to claim 1～5 is characterized in that,
Described the first strengthening part has the following coefficient of linear expansion of coefficient of linear expansion of described short-circuited conducting sleeve, and described the second strengthening part has the following coefficient of linear expansion of coefficient of linear expansion of described the first strengthening part.
7. the described induction motor of any one according to claim 1～6 is characterized in that,
Described the second strengthening part has the department of assembly, and described department of assembly is used for the balance element that assembling averages out rotor.
8. the rotor of an induction motor is characterized in that,
The rotor of described induction motor possesses:
Short-circuited conducting sleeve, described short-circuited conducting sleeve are used for making a plurality of conductors that the rotating shaft around the tubular rotor core is configured to ring-type respectively in the end face short circuit of described rotor core;
The first strengthening part, described the first strengthening part is embedded in described short-circuited conducting sleeve; And
The second strengthening part, described the second strengthening part are embedded in described the first strengthening part and are fixed in described rotating shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011228877A JP2013090447A (en) | 2011-10-18 | 2011-10-18 | Induction motor and rotor of induction motor |
| JP2011-228877 | 2011-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103066784A true CN103066784A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205004518U Expired - Fee Related CN202997886U (en) | 2011-10-18 | 2012-09-28 | Induction motor and rotor of induction motor |
| CN2012103670769A Pending CN103066784A (en) | 2011-10-18 | 2012-09-28 | Induction motor and rotor of induction motor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205004518U Expired - Fee Related CN202997886U (en) | 2011-10-18 | 2012-09-28 | Induction motor and rotor of induction motor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013090447A (en) |
| CN (2) | CN202997886U (en) |
| BR (1) | BR102012024524A2 (en) |
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| CN108880157A (en) * | 2017-05-08 | 2018-11-23 | 奥迪股份公司 | For the rotor of motor, the method for motor and manufacture rotor including the rotor |
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| JP2013090447A (en) * | 2011-10-18 | 2013-05-13 | Yaskawa Electric Corp | Induction motor and rotor of induction motor |
| JP6032178B2 (en) * | 2013-11-05 | 2016-11-24 | トヨタ自動車株式会社 | Induction motor rotor |
| CN104753277B (en) * | 2015-03-13 | 2018-06-15 | 广东威灵电机制造有限公司 | For the rotor of squirrel cage motor and with its squirrel cage motor |
| JP6660121B2 (en) * | 2015-08-27 | 2020-03-04 | 株式会社日立インダストリアルプロダクツ | Rotating electric machine |
| GB2579584A (en) * | 2018-12-04 | 2020-07-01 | Bowman Power Group Ltd | Squirrel-cage rotor |
| US11258322B2 (en) * | 2018-12-20 | 2022-02-22 | Teco-Westinghouse Motor Company | High speed induction machine |
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| JPS53110010A (en) * | 1977-03-08 | 1978-09-26 | Toshiba Corp | Squirrel-cage rotor |
| JPH0295157A (en) * | 1988-09-29 | 1990-04-05 | Satake Eng Co Ltd | Variable speed induction motor |
| JPH03289338A (en) * | 1990-04-03 | 1991-12-19 | Fuji Electric Co Ltd | Rotor for electric rotating machine |
| JPH0578178U (en) * | 1992-03-16 | 1993-10-22 | 株式会社安川電機 | Ultra high speed motor rotor |
| CN202997886U (en) * | 2011-10-18 | 2013-06-12 | 株式会社安川电机 | Induction motor and rotor of induction motor |
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| JPS5368910U (en) * | 1976-11-15 | 1978-06-09 | ||
| JPS61132063A (en) * | 1984-11-28 | 1986-06-19 | Yaskawa Electric Mfg Co Ltd | Rotor of induction motor |
| JPS6264173U (en) * | 1985-10-08 | 1987-04-21 | ||
| JP3261787B2 (en) * | 1993-02-25 | 2002-03-04 | 三菱電機株式会社 | Rotor for electric motor and method of manufacturing the same |
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2011
- 2011-10-18 JP JP2011228877A patent/JP2013090447A/en active Pending
-
2012
- 2012-09-26 BR BRBR102012024524-8A patent/BR102012024524A2/en not_active IP Right Cessation
- 2012-09-28 CN CN2012205004518U patent/CN202997886U/en not_active Expired - Fee Related
- 2012-09-28 CN CN2012103670769A patent/CN103066784A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53110010A (en) * | 1977-03-08 | 1978-09-26 | Toshiba Corp | Squirrel-cage rotor |
| JPH0295157A (en) * | 1988-09-29 | 1990-04-05 | Satake Eng Co Ltd | Variable speed induction motor |
| JPH03289338A (en) * | 1990-04-03 | 1991-12-19 | Fuji Electric Co Ltd | Rotor for electric rotating machine |
| JPH0578178U (en) * | 1992-03-16 | 1993-10-22 | 株式会社安川電機 | Ultra high speed motor rotor |
| CN202997886U (en) * | 2011-10-18 | 2013-06-12 | 株式会社安川电机 | Induction motor and rotor of induction motor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868674A (en) * | 2014-02-25 | 2015-08-26 | 发那科株式会社 | Rotor With End Ring And Electric Motor |
| CN104868674B (en) * | 2014-02-25 | 2019-01-11 | 发那科株式会社 | Rotor and motor |
| CN106134045A (en) * | 2014-03-31 | 2016-11-16 | 三菱电机株式会社 | The rotor of cage electromotor and cage electromotor |
| CN106134045B (en) * | 2014-03-31 | 2018-10-12 | 三菱电机株式会社 | The rotor and cage electromotor of cage electromotor |
| CN104753278A (en) * | 2015-03-13 | 2015-07-01 | 广东威灵电机制造有限公司 | Mouse cage type motor and rotor used for same |
| CN104753278B (en) * | 2015-03-13 | 2018-09-11 | 广东威灵电机制造有限公司 | Rotor for squirrel cage motor and the squirrel cage motor with it |
| CN108880157A (en) * | 2017-05-08 | 2018-11-23 | 奥迪股份公司 | For the rotor of motor, the method for motor and manufacture rotor including the rotor |
| US10886825B2 (en) | 2017-05-08 | 2021-01-05 | Audi Ag | Rotor for an electric machine, the rotor has short circuit bars, short circuit ring, and support disc of different materials |
Also Published As
| Publication number | Publication date |
|---|---|
| BR102012024524A2 (en) | 2013-09-03 |
| CN202997886U (en) | 2013-06-12 |
| JP2013090447A (en) | 2013-05-13 |
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Application publication date: 20130424 |