CN109245348A - Moving load with high speed rotor structure and motor comprising the rotor structure - Google Patents
Moving load with high speed rotor structure and motor comprising the rotor structure Download PDFInfo
- Publication number
- CN109245348A CN109245348A CN201710557888.2A CN201710557888A CN109245348A CN 109245348 A CN109245348 A CN 109245348A CN 201710557888 A CN201710557888 A CN 201710557888A CN 109245348 A CN109245348 A CN 109245348A
- Authority
- CN
- China
- Prior art keywords
- rotor
- end ring
- high speed
- steel sheet
- silicon steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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)
- Iron Core Of Rotating Electric Machines (AREA)
- Induction Machinery (AREA)
Abstract
The present invention relates to a kind of moving load with high speed rotor structure and comprising the motor of the rotor structure, the rotor structure includes rotor core, is provided centrally with axially extending bore；The first rotor end ring made of high-yield strength silicon steel sheet is close to the rotor core, is arranged at rotor core both ends；Second rotor end ring is close to the setting of the first rotor end ring end；The periphery of the rotor core, the first rotor end ring, the second rotor end ring is arranged in rotor bar；And shaft, it is arranged in the axially extending bore.The present invention makes asynchronous machine under the premise of guaranteeing electromagnetic performance, greatly improves the mechanical strength of rotor, and then improve the maximum speed of motor, is more advantageous to high speed and the miniaturization of design of electrical motor.
Description
Technical field
The present invention relates to technical field of motors more particularly to a kind of moving load with high speed rotor structure and include the rotor knot
The motor of structure.
Background technique
Asynchronous motor is the generation electromagnetic torque that interacted by air-gap rotating magnetic field and rotor windings induced current, thus
Realize that energy converting between mechanical is a kind of alternating current generator of mechanical energy.In existing all kinds of motor applications, asynchronous machine demand
It measures larger.Currently, the application of asynchronous machine is intended to high speed and miniaturization, however, asynchronous machine is led when running at high speed
The phenomenon that item and rotor end ring are subject to centrifugal forces, and conducting bar or end ring are easy to appear fracture failure, when serious, fracture is led
Item can fly out, and scratch stator, injury stator insulation, cause stator short-circuit, so that motor burns damage.
For the purpose of safety, in the prior art, increase retaining ring structure at rotor end ring, still, this scheme needs volume
Putting-out system is made, and production cost is increased, and increases the assembly time of motor.It in the prior art, further include in rotor core
One high strength steel rotor end ring is set between rotor end ring, and still, this high strength steel rotor end ring, usual thickness is big
In 3mm, stamped difficulty is big, and precision is difficult to ensure, the grinding tool service life is short, further, since its yield strength is very high (usually big
In 600MPa), therefore, the mold manufacture difficulty of the rotor made of steel end ring of punching press is big, and at high cost, required precision is also very high, right
It is very big challenge for production firm, is difficult to realize the batch production of high strength steel rotor end ring.It follows that turning
The technical solution of one high strength steel rotor end ring is set between sub- iron core and rotor end ring, and at high cost, the practicability is poor.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of moving load with high speed rotor structure and comprising the rotor
The motor of structure, the mechanical strength improved under high speed operation of motor while guaranteeing asynchronous machine electromagnetic performance can with safety
By property, so that motor is more suitable for running at high speed.
Another object of the present invention is to make the electromagnetic performance and machine of motor by the silicon steel material of two kinds of different performances
Tool performance can get both simultaneously.Silicon steel sheet punching precision is high simultaneously, die life is long, is easier to accomplish scale production.
In order to solve the above-mentioned technical problems, the present invention provides a kind of moving load with high speed rotor structures comprising:
Rotor core is provided centrally with axially extending bore；
The first rotor end ring made of high-yield strength silicon steel sheet is close to the rotor core, is arranged in rotor iron
Heart both ends；
Second rotor end ring is close to the setting of the first rotor end ring end；
The periphery of the rotor core, the first rotor end ring, the second rotor end ring is arranged in rotor bar；
And shaft, it is arranged in the axially extending bore.
Further, the shaft combines in an interference fit with the rotor core.
Further, the axially disposed shaft shoulder for having protrusion of the shaft, the shaft shoulder are in contact with the first rotor end ring.
Further, the periphery of the rotor core, the first rotor end ring and the second rotor end ring is circumferentially provided with use
In the conducting bar hole of installation rotor bar, the rotor bar is inserted into the conducting bar hole.
Further, the conducting bar hole is along the circumferential equal of the rotor core, the first rotor end ring and the second rotor end ring
Even distribution.
Further, the rotor core after the high magnetic conductivity silicon steel sheet punching press of multi-disc by being overrided to form.
Further, the first rotor end ring after multi-disc high-yield strength silicon steel sheet punching press by being overrided to form.
Further, the yield strength range of the high magnetic conductivity silicon steel sheet is 330MP-400MP, the high-yield strength
The yield strength of silicon steel sheet is higher than 600MP.
Further, the high magnetic conductivity silicon steel sheet with a thickness of 0.2mm~0.5mm, the high-yield strength silicon steel sheet
With a thickness of 0.5mm~1mm.
Further, the rotor bar and second rotor end ring by high conductivity oxygen-free copper or copper alloy system
At.
Further, the rotor bar and second rotor end ring are fixed together.
Further, the rotor bar and second rotor end ring are fixed together by the way of welding.
According to another aspect of the present invention, a kind of asynchronous machine, including the rotor structure are provided.
The present invention has obvious advantages and beneficial effects compared with the existing technology.By above-mentioned technical proposal, the present invention
A kind of moving load with high speed rotor structure and the motor comprising the rotor structure can reach comparable technical progress and practicability,
And with the extensive utility value in industry, at least have the advantage that
1, rotor core is made of high magnetic conductance silicon steel sheet, ensure that the high electromagnetic performance of motor.
2, the first rotor end ring at rotor core both ends is made of the silicon steel sheet of high yield degree, improves the machine of rotor structure
Tool intensity makes the resistance to centrifugal force of rotor structure become larger, to improve motor operation revolving speed.
3, rotor core is made of high magnetic conductance silicon steel sheet, and the first rotor end ring at rotor core both ends is by high yield degree
Silicon steel sheet is made, the combination of two kinds of silicon steel materials, the common electromagnetic performance for realizing motor and mechanical performance it is compatible, make
Motor improves the maximum speed of motor under the premise of guaranteeing electromagnetic performance and mechanical performance.
4, silicon steel sheet punching precision is high simultaneously, die life is long, is easier to accomplish scale production.
5, the present invention makes asynchronous machine under the premise of guaranteeing electromagnetic performance, greatly improves the mechanical strength of rotor, Jin Erti
The maximum speed of high motor is more advantageous to the high speed for realizing design of electrical motor and miniaturization.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the moving load with high speed rotor structure schematic cross-section that one embodiment of the invention provides.
Fig. 2 is Figure 1A-A schematic cross-section of the present invention.
Description of symbols:
1- rotor core 2- rotor bar
3- the first rotor end ring the second rotor end ring of 4-
31- the first rotor left end ring 32- the first rotor right end ring
The second rotor of 41- left end ring 42- the second rotor right end ring
The 5- shaft 6- shaft shoulder
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment to a kind of moving load with high speed rotor structure proposed according to the present invention and include the rotor structure
The specific embodiment and its effect of motor, detailed description is as follows.
During the work time, (rotor end ring is corresponding originally herein for rotor bar and rotor end ring for existing asynchronous machine rotor
The second rotor end ring 4 in invention) it is subject to centrifugal forces, it is easily broken off at high speed, the present invention proposes a kind of high speed
Asynchronous machine rotor structure, as shown in Figure 1 and Figure 2, the rotor structure includes: rotor core 1, rotor bar 2, and first
Rotor end ring 3, the second rotor end ring 4 and shaft 5, wherein the rotor core 1 is provided centrally with axially extending bore, the shaft 5
It is arranged in the axially extending bore；The first rotor end ring 3 made of high-yield strength silicon steel sheet is close to rotor core 1, if
It sets at 1 both ends of rotor core, as an example, first end ring 3 and rotor core 1 rivet；Second rotor end ring 4 is close to
The end of the first rotor end ring 3 is arranged in the first rotor end ring 3；The rotor bar 2 is arranged in the rotor core 1, first
The periphery of rotor end ring 3 and the second rotor end ring 4.The setting of the first rotor end ring 3 made of high-yield strength silicon steel sheet, substantially
The anti-centrifugation ability for improving asynchronous machine rotor, improves the revolving speed of asynchronous machine, and ensure that asynchronous machine high-speed cruising
Under mechanical strength and security reliability.
It is circumferentially arranged useful in the periphery of 4 three of the rotor core 1, the first rotor end ring 3 and the second rotor end ring
In the conducting bar hole of installation rotor bar 2.As shown in Fig. 2 of the present invention, it is illustratively provided with multiple conducting bar holes and phase in this example
There are multiple rotor bars 2 with answering.In the elaboration of this paper, rotor core 1, the first rotor end ring 3 and second are run through in conducting bar hole
Rotor end ring 4, and be the periphery that the rotor core 1, the first rotor end ring 3 and the second rotor end ring 4 are set, in this way,
Rotor bar 2 is inserted into after conducting bar hole, and rotor bar 2 is correspondingly situated at the rotor core 1, the first rotor end ring 3 and second
The periphery of rotor end ring 4.It illustrates, in 4 three of the rotor core 1, the first rotor end ring 3 and the second rotor end ring
Periphery, circumferentially arranged conducting bar hole, be not to say that conducting bar hole the outside of the three is set so that rotor bar 2 be inserted into
When conducting bar hole, rotor core 1, the first rotor end ring 3 and the second rotor end ring 4 are wrapped in wherein, but: conducting bar hole be across
Rotor core 1, the first rotor end ring 3 and the second rotor end ring 4 and be inside in their threes and close to the outer of their threes
Side (outside is for rotor core 1 is located at that side of axially extending bore), rather than conducting bar hole is located at their outside.
Preferably, conducting bar hole is uniformly distributed in the periphery of rotor core 1, the first rotor end ring 3 and the second rotor end ring 4, correspondingly, if
Dry rotor bar 2 is uniformly distributed along the periphery of rotor core 1, the first rotor end ring 3 and the second rotor end ring 4.
In example of the invention, shaft 5 is combined with interference fit type with rotor core 1, is arranged in the axial direction
In through-hole, magnitude of interference determines that the product of different size has different numerical value by specifically cooperation and Stress calculation.The shaft
4 are provided with the shaft shoulder 6 of protrusion, the first rotor left end ring 31 of the shaft shoulder 6 side corresponding with the setting shaft shoulder 6 along axial side
It is in contact.
By being overrided to form after the high magnetic conductivity silicon steel sheet punching press of multi-disc, high magnetic conductivity silicon steel sheet is conventional silicon for rotor core 1
Steel disc, such as the silicon steel sheet of M235-35, the yield strength range of conventional silicon-steel piece are 330MP-400MP, and rotor core 1 uses
The high magnetic conductivity silicon steel sheet of multi-disc ensure that the electromagnetic performance of motor.The manufacture craft of rotor core 1 is not limited to this, other can be with
The method that satisfactory rotor core 1 is made in silicon steel sheet is suitable for this.The thickness of the high magnetic conductivity silicon steel sheet is preferably
0.2mm~0.5mm, length and height of the piece number of required high magnetic conductivity silicon steel sheet according to rotor core along rotor core axial direction are led
The thickness of magnetic silicon steel sheet determines.
The first rotor end ring 3 includes the first rotor left end ring 31 and the first rotor right end ring 32, the first rotor left end
Ring 31 is close to the left end that rotor core 1 is arranged in rotor core 1, and the first rotor right end ring 32 is close to the setting of rotor core 1 and is being turned
The right end of sub- iron core 1.The first rotor end ring 3 is improved and is turned by being overrided to form after multi-disc high-yield strength silicon steel sheet punching press
The mechanical strength of minor structure makes the resistance to centrifugal force of rotor structure become larger, to improve motor operation revolving speed.The first rotor end ring 3
Manufacture craft is not limited to this, other methods that silicon steel sheet can be made to satisfactory the first rotor end ring 3 are suitable for this.Institute
The thickness for stating high-yield strength silicon steel sheet is preferably 0.5mm~1mm, and the piece number of required high-yield strength silicon steel sheet is according to first turn
Sub- end ring determines along the length of rotor core axial direction and the thickness of high-yield strength silicon steel sheet, the length of the first rotor end ring 3
Degree is preferably 3mm~6mm.The silicon steel sheet of high-yield strength, the high-yield strength stainless steel plate compared to thickness greater than 3mm are easier to
It obtains, moreover, because the thickness of the first rotor end ring 3 is usually in 3mm or more, if by high-yield strength stainless steel plate material system
Make, stamped is difficult, what precision was difficult to ensure, and die life is very short；And the silicon steel sheet thinner thickness of high-yield strength, lead to
Often between 0.5~1mm, it is very easy to realize that punching press is made by mold, is simple to manufacture conveniently, is greatly saved and is produced into
This.
Second rotor end ring 4 includes the second rotor left end ring 41 and the second rotor right end ring 42, second rotor
Left end ring 41 is close to the setting of the first rotor left end ring 31 31 left end of the first rotor left end ring (being reference with attached drawing 1), and described the
Two rotor right end rings 41 are close to the first rotor right end ring 31 and the right end of the first rotor right end ring 31 are arranged in (with attached drawing 1 for ginseng
It examines).
Preferably, the rotor bar 2 and second rotor end ring 4 by high conductivity oxygen-free copper or copper alloy system
At the rotor bar 2 and second rotor end ring 4 are fixed together.Preferably, rotor bar 2 and second rotor
End ring 4 can be fixed together by the way of welding, material used in the rotor bar 2 and second rotor end ring 4
It is not limited to this, for example, the second rotor end ring 4 can be made of aluminum material.
The present invention also provides a kind of asynchronous machine, including the rotor structure, rotor core 1 is by high magnetic conductance silicon steel sheet
It is made, ensure that the electromagnetic performance of motor.The first rotor end ring 3 at 1 both ends of rotor core is made of the silicon steel sheet of high yield degree,
The mechanical strength for improving rotor structure makes the resistance to centrifugal force of rotor structure become larger, to improve motor operation revolving speed.Rotor core
1 is made of high magnetic conductance silicon steel sheet, and the first rotor end ring 3 at 1 both ends of rotor core is made of the silicon steel sheet of high yield degree, and two kinds
The combination of the silicon steel material of different performance, the common electromagnetic performance for realizing motor and mechanical performance it is compatible, make motor
Under the premise of guaranteeing electromagnetic performance and mechanical performance, the maximum speed of motor is improved.Wherein, silicon steel sheet easily obtains, and easily logical
It crosses grinding tool and realizes stamped, method is simple, at low cost.The present invention makes asynchronous machine under the premise of guaranteeing electromagnetic performance, substantially
The mechanical strength of rotor is improved, and then improves the maximum speed of motor, is more advantageous to and realizes the high speed of design of electrical motor and small-sized
Change.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention
Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of moving load with high speed rotor structure comprising:
Rotor core (1), is provided centrally with axially extending bore；
The first rotor end ring made of high-yield strength silicon steel sheet (3) is close to the rotor core (1), is arranged in rotor
Iron core (1) both ends；
Second rotor end ring (4) is close to the setting of the first rotor end ring (3) end；
Rotor bar (2), be arranged the rotor core (1), the first rotor end ring (3), the second rotor end ring (4) it is outer
Week；
And shaft (5), it is arranged in the axially extending bore.
2. moving load with high speed rotor structure according to claim 1, it is characterised in that: the shaft (5) and described turn
Sub- iron core (1) combines in an interference fit.
3. moving load with high speed rotor structure according to claim 1, it is characterised in that: the rotor core (1), first
The periphery of rotor end ring (3) and the second rotor end ring (4) is circumferentially provided with the conducting bar hole for installing rotor bar (2), institute
It states rotor bar (2) and is inserted into the conducting bar hole.
4. moving load with high speed rotor structure according to claim 3, it is characterised in that: the conducting bar hole is along the rotor
The circumferential direction of iron core (1), the first rotor end ring (3) and the second rotor end ring (4) is uniformly distributed.
5. moving load with high speed rotor structure described in any one of -4 according to claim 1, it is characterised in that: the rotor
Iron core (1) after the high magnetic conductivity silicon steel sheet punching press of multi-disc by being overrided to form；The first rotor end ring (3) is by multi-disc high-yield strength
It is overrided to form after silicon steel sheet punching press.
6. moving load with high speed rotor structure according to claim 5, it is characterised in that: the high magnetic conductivity silicon steel sheet
Yield strength range is 330MP-400MP, and the yield strength of the high-yield strength silicon steel sheet is higher than 600MP.
7. moving load with high speed rotor structure according to claim 5, it is characterised in that: the high magnetic conductivity silicon steel sheet
With a thickness of 0.2mm~0.5mm, the high-yield strength silicon steel sheet is with a thickness of 0.5mm~1mm.
8. moving load with high speed rotor structure described in any one of -4 according to claim 1, it is characterised in that: the rotor
Conducting bar (2) and second rotor end ring (4) are made of oxygen-free copper or copper alloy.
9. moving load with high speed rotor structure according to claim 8, it is characterised in that: the rotor bar (2) and institute
The second rotor end ring (4) is stated to be fixed together.
10. a kind of asynchronous machine, it is characterised in that: including the rotor structure as described in claim 1-9.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557888.2A CN109245348A (en) | 2017-07-10 | 2017-07-10 | Moving load with high speed rotor structure and motor comprising the rotor structure |
| TW107123895A TW201909523A (en) | 2017-07-10 | 2018-07-10 | High-speed asynchronous motor rotor structure and motor comprising same |
| PCT/CN2018/095146 WO2019011235A1 (en) | 2017-07-10 | 2018-07-10 | High-speed asynchronous motor rotor structure and motor comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557888.2A CN109245348A (en) | 2017-07-10 | 2017-07-10 | Moving load with high speed rotor structure and motor comprising the rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109245348A true CN109245348A (en) | 2019-01-18 |
Family
ID=65001845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710557888.2A Pending CN109245348A (en) | 2017-07-10 | 2017-07-10 | Moving load with high speed rotor structure and motor comprising the rotor structure |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109245348A (en) |
| TW (1) | TW201909523A (en) |
| WO (1) | WO2019011235A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309543A (en) * | 2021-12-07 | 2022-04-12 | 卧龙电气驱动集团股份有限公司 | Production process of induction motor cast-aluminum rotor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19542962C1 (en) * | 1995-11-17 | 1996-11-28 | Siemens Ag | Short-circuit rotor for asynchronous electrical machine |
| CN201821179U (en) * | 2010-10-26 | 2011-05-04 | 宁波中大力德传动设备有限公司 | Torque motor for increasing torque |
| CN102651596A (en) * | 2011-02-24 | 2012-08-29 | 发那科株式会社 | Squirrel-cage rotor for induction motor |
| CN106532997A (en) * | 2016-12-21 | 2017-03-22 | 上海电气集团上海电机厂有限公司 | Super-high-speed asynchronous motor |
| CN206259769U (en) * | 2016-10-27 | 2017-06-16 | 蔚来汽车有限公司 | Motor rotor construction with copper sliver |
| CN206992821U (en) * | 2017-07-10 | 2018-02-09 | 上海蔚来汽车有限公司 | Moving load with high speed rotor structure and the motor comprising the rotor structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0622515A (en) * | 1992-07-02 | 1994-01-28 | Fanuc Ltd | Rotor for squirrel-cage induction motor |
-
2017
- 2017-07-10 CN CN201710557888.2A patent/CN109245348A/en active Pending
-
2018
- 2018-07-10 WO PCT/CN2018/095146 patent/WO2019011235A1/en active Application Filing
- 2018-07-10 TW TW107123895A patent/TW201909523A/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19542962C1 (en) * | 1995-11-17 | 1996-11-28 | Siemens Ag | Short-circuit rotor for asynchronous electrical machine |
| CN201821179U (en) * | 2010-10-26 | 2011-05-04 | 宁波中大力德传动设备有限公司 | Torque motor for increasing torque |
| CN102651596A (en) * | 2011-02-24 | 2012-08-29 | 发那科株式会社 | Squirrel-cage rotor for induction motor |
| CN206259769U (en) * | 2016-10-27 | 2017-06-16 | 蔚来汽车有限公司 | Motor rotor construction with copper sliver |
| CN106532997A (en) * | 2016-12-21 | 2017-03-22 | 上海电气集团上海电机厂有限公司 | Super-high-speed asynchronous motor |
| CN206992821U (en) * | 2017-07-10 | 2018-02-09 | 上海蔚来汽车有限公司 | Moving load with high speed rotor structure and the motor comprising the rotor structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309543A (en) * | 2021-12-07 | 2022-04-12 | 卧龙电气驱动集团股份有限公司 | Production process of induction motor cast-aluminum rotor |
| CN114309543B (en) * | 2021-12-07 | 2023-12-05 | 卧龙电气驱动集团股份有限公司 | Production process of cast aluminum rotor of induction motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019011235A1 (en) | 2019-01-17 |
| TW201909523A (en) | 2019-03-01 |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190118 |
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| RJ01 | Rejection of invention patent application after publication |