CN201215905Y - Locking construction of motor rotor cage strip - Google Patents
Locking construction of motor rotor cage strip Download PDFInfo
- Publication number
- CN201215905Y CN201215905Y CNU2008200135333U CN200820013533U CN201215905Y CN 201215905 Y CN201215905 Y CN 201215905Y CN U2008200135333 U CNU2008200135333 U CN U2008200135333U CN 200820013533 U CN200820013533 U CN 200820013533U CN 201215905 Y CN201215905 Y CN 201215905Y
- Authority
- CN
- China
- Prior art keywords
- rotor
- cage bars
- motor
- end ring
- rotor cage
- 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.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title 1
- 238000004080 punching Methods 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 5
- 230000009193 crawling Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 206010030312 On and off phenomenon Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008111 motor development Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Images
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
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0012—Manufacturing cage rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/06—Embedding prefabricated windings in machines
- H02K15/062—Windings in slots; salient pole windings
- H02K15/063—Windings for large electric machines, e.g. bar windings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Induction Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a motor rotor, in particular to a locking structure of motor rotor cage bars, which comprises a shaft, end rings, a plurality of rotor punching plates, wherein the rotor punching plates are sleeved on the shaft, both ends are respectively provided with the end rings, a plurality of notches are homogeneously arranged on the peripheries of the rotor punching plates, and the rotor cage bars are respectively arranged in each of the notches, both ends of the rotor cage bars are connected on the end rings, the bottom of each notch is provided with a hole, and an elastic rising pin is respectively arranged in each hole. The locking structure is characterized in that the rotor cage bars are tightly clamped in slots which are formed at the notches during the starting process and the operating process of the motor, namely the cage bars are uniformly forced, fast and not loose, thereby the defect that the cage bars are broken due to vibrating during the frequency crawling or the locked-rotor of an existing three-phase asynchronous electric motor is overcome. The additional torque which the end rings transfer to the rotor cage bars during the vibration is further reduced by an end ring support, thereby the vibrating failure of the rotor is effectively reduced, the reliability of the rotor is greatly improved, and the average service life of the electric motor is increased.
Description
Technical field
The utility model relates to motor rotor, specifically a kind of locking mechanism of motor rotor cage bar.
Background technology
The colliery is very fast with motor development recently, and little, the high-power motor of volume has become first-selection; Therefore, motor is in the computation schemes process, and nargin reduces just gradually.Yet, in the face of the load of colliery with motor weighs, the motor fluctuation of service, special circumstances such as the fluctuation of load is big when meeting hard coal or special operation condition, existing squirrel-cage threephase asynchronous in use often needs Fraquent start or the motor rotation blockage phenomenon often takes place.And well-known, the starting current of squirrel-cage threephase asynchronous is big, is generally 5～8 times of rated current, and electromotor overload or frequent crawl all can make the moment increase of rotor cage bar electric current, cause the impact to the big electric current of cage on the rotor or cage bar top; The cage bar is subjected to the effect of electromagnetic force, will produce vibration in groove, causes rotor cage bar to drive end ring and vibrates.And the side effect of high temperature and vibration will make phenomenons such as the weakest link generation melting welding, fracture of the welding of rotor cage bar and end ring contact position, and then causes burning motor.
The utility model content
Vibration takes place and the problem of fracture in order to solve prior art rotor cage bar, the purpose of this utility model is to provide a kind of locking mechanism of motor rotor cage bar.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises axle, end ring, a plurality of rotor punching, rotor punching is set on the axle, and both sides are respectively equipped with end ring, is evenly equipped with a plurality of otch on the circumference of rotor punching, all be equipped with rotor cage bar in each otch, the two ends of rotor cage bar are connected on the end ring; The bottom of described each otch is equipped with the hole, and the elasticity pin that rises all is installed in each hole.
Wherein: described hole is semicircle; The rise outer surface of pin of described elasticity is connected to rotor cage bar, and elasticity rises by the radial section of pin for circular; Also be provided with the rotor pressing ring that compresses rotor punching between described rotor punching and the end ring, the rise two ends of pin of elasticity are connected to rotor pressing ring; The bottom of described end ring is equipped with the end ring support.
Advantage of the present utility model and good effect are:
1. the utility model has added the elasticity pin that rises below rotor cage bar, no matter in motor starting still is running, rotor cage bar in the formed groove of otch by rise pin chucking of elasticity, stressed even, firmly not loosening, when having overcome existing frequent crawl of phase asynchronous motivation or stall, the shortcoming that rotor cage bar ruptures because of vibration.
2. cooperating by key in the bottom of end ring has increased the end ring support again, thereby end ring passes to the additional force of rotor cage bar when having reduced vibration effectively, has improved the reliability of motor, and motor is increased average life.
Description of drawings
Fig. 1 is the rotor structure schematic diagram of motor;
Fig. 2 is the enlarged drawing at A place among Fig. 1;
Fig. 3 is the structural representation of Fig. 1 rotor punching;
Fig. 4 is the enlarged drawing at B place among Fig. 3;
Fig. 5 is the structural representation of cage bar among Fig. 1;
Fig. 6 is installed on the interior schematic diagram of rotor punching for the cage bar;
Fig. 7 is a left side (right side) view of Fig. 5 cage bar;
Fig. 8 is the structural representation of the another kind of shaped cutout of rotor punching;
Fig. 9 is the cage bar structural representation corresponding with Fig. 8 rotor punching shape;
Figure 10 is installed on the interior structural representation of Fig. 8 rotor punching otch for Fig. 9 cage bar;
Wherein: 1 is axle, and 2 is back-up ring, and 3 is end ring, and 4 is rotor pressing ring, and 5 is the end ring support, and 6 is rotor punching, and 7 is rotor cage bar, and 8 are the elasticity pin that rises, and 9 is the hole, and 10 is otch.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, the utility model comprises axle 1, end ring 3, a plurality of rotor punching 6, and rotor punching 6 is set on the axle 1; End ring 3 is two, is positioned at the both sides of rotor punching 6, and end ring 3 is connected with the end ring support by key, is installed on the axle 1 by end ring support 5 respectively, and end ring passed to the additional force of rotor cage bar when end ring support 5 can further reduce to vibrate.Be evenly equipped with a plurality of otch 10 on the circumference of rotor punching 6, all be equipped with rotor cage bar 7 in each otch 10, the two ends of rotor cage bar 7 are fixed on the end ring 3.Also be provided with rotor pressing ring 4 between the both sides of rotor punching 6 and this side ring 3, a plurality of rotor punchings 6 are fixed.As Fig. 3, shown in Figure 6, the bottom of each otch 10 is equipped with semicircular hole 9 on the rotor punching 6, and diameter is 3mm～5mm, and the elasticity pin 8 that rises all is installed in each hole 9.Elasticity rises by the radial section of pin 8 for circular, and this radius of a circle is identical with the radius in hole 9; The rise outer surface of pin 8 of elasticity is connected to rotor cage bar 7, and it is locked in the axial groove that a plurality of otch 10 form, and the rise two ends of pin 8 of elasticity are connected to rotor pressing ring 4, are withstood by rotor pressing ring 4, and making elasticity rise by pin 8 can not be free movable.The otch 10 of present embodiment can be as shown in Figure 4 rectangle, the shape of rotor cage bar 7 is corresponding with rectangular slits, as Fig. 5, shown in Figure 7.The shape of otch 10 also can be as shown in Figure 8, and the bottom in close hole 9 is trapezoidal, and the top at close rotor punching edge is rectangle; The shape of rotor cage bar 7 is corresponding with this kerf, as shown in Figure 9.
Operation principle of the present utility model is: the squirrel-cage threephase asynchronous, promptly rotor by the parallel connection of many cage bars after, be welded as a whole with end ring; And rotor core is formed by high permeability material such as DW540-50 silicon steel plate stacking, it is bigger to laminate the formed flute profile tolerance of back otch, dimensional tolerance is also bigger after the cage bar system of forging, and the cage bar of copper bar rotor is longer, all more than 500mm (little as cage bar size, as then can to adopt cast aluminum rotor compression casting technique) can not process, make like this to be matched in clearance between rotor cage bar and the rotor core, minimum clearance is zero; And silicon steel sheet is broken in the cooperation of tension easily, even the cage bar can't be inserted.The utility model is in semicircular hole 9 of bottom punching out of each otch 10 of rotor punching 6, when rotor is assembled, when squeezing into rotor cage bar 7, rise and rotor cage bar 7 is just beaten by the figure paper size behind the pin 8 putting into elasticity near the iron core edge between the rotor pressing ring 4, rise pin 8 of elasticity is locked rotor cage bar 7 on the one hand in groove like this, and being withstood by rotor pressing ring 4 on the one hand can not be free movable.
The utility model applicable to the YBCS-610 coal-winning machine with flame-proof mine threephase asynchronous, YBSS-855,1000 conveyers with flame-proof mine threephase asynchronous and YSBT-1500,1850-4 frequency control testing stand with threephase asynchronous etc.
Claims (5)
1. the locking mechanism of a motor rotor cage bar, comprise axle, end ring, a plurality of rotor punching, rotor punching is set on the axle, both sides are respectively equipped with end ring, on the circumference of rotor punching, be evenly equipped with a plurality of otch, all be equipped with rotor cage bar in each otch, the two ends of rotor cage bar are connected on the end ring; It is characterized in that: the bottom of described each otch (10) is equipped with hole (9), and the elasticity pin (8) that rises all is installed in each hole (9).
2. by the locking mechanism of the described motor rotor cage of claim 1 bar, it is characterized in that: described hole (9) are for semicircle.
3. by the locking mechanism of the described motor rotor cage of claim 1 bar, it is characterized in that: the rise outer surface of pin (8) of described elasticity is connected to rotor cage bar (7), and elasticity rises by the radial section of pin (8) for circular.
4. press the locking mechanism of the described motor rotor cage of claim 1 bar, it is characterized in that: also be provided with the rotor pressing ring (4) that compresses rotor punching (6) between described rotor punching (6) and the end ring (3), the rise two ends of pin (8) of elasticity are connected to rotor pressing ring (4).
5. by the locking mechanism of the described motor rotor cage of claim 1 bar, it is characterized in that: the bottom of described end ring (3) is equipped with end ring support (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200135333U CN201215905Y (en) | 2008-06-18 | 2008-06-18 | Locking construction of motor rotor cage strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200135333U CN201215905Y (en) | 2008-06-18 | 2008-06-18 | Locking construction of motor rotor cage strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215905Y true CN201215905Y (en) | 2009-04-01 |
Family
ID=40521111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200135333U Expired - Fee Related CN201215905Y (en) | 2008-06-18 | 2008-06-18 | Locking construction of motor rotor cage strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201215905Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951095A (en) * | 2010-10-15 | 2011-01-19 | 无锡哈电电机有限公司 | Rotor of alternating-current asynchronous motor |
| CN104769822A (en) * | 2012-10-30 | 2015-07-08 | 西门子公司 | Cage rotor comprising a deformable bearing |
| CN105449944A (en) * | 2014-09-18 | 2016-03-30 | 勃姆巴迪尔运输有限公司 | A method for producing a squirrel-cage rotor and a rotor produced thereby |
| FR3069732A1 (en) * | 2017-07-31 | 2019-02-01 | Moteurs Leroy-Somer | CAGE ROTOR INJECTED |
-
2008
- 2008-06-18 CN CNU2008200135333U patent/CN201215905Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951095A (en) * | 2010-10-15 | 2011-01-19 | 无锡哈电电机有限公司 | Rotor of alternating-current asynchronous motor |
| CN101951095B (en) * | 2010-10-15 | 2012-08-08 | 中电电机股份有限公司 | Rotor of alternating-current asynchronous motor |
| CN104769822A (en) * | 2012-10-30 | 2015-07-08 | 西门子公司 | Cage rotor comprising a deformable bearing |
| CN104769822B (en) * | 2012-10-30 | 2018-04-03 | 西门子公司 | Cage-type rotor with flexible bearing |
| US10476361B2 (en) | 2012-10-30 | 2019-11-12 | Siemens Aktiengesellschaft | Cage rotor comprising a deformable bearing |
| CN105449944A (en) * | 2014-09-18 | 2016-03-30 | 勃姆巴迪尔运输有限公司 | A method for producing a squirrel-cage rotor and a rotor produced thereby |
| CN105449944B (en) * | 2014-09-18 | 2019-04-19 | 勃姆巴迪尔运输有限公司 | For manufacturing the method for cage rotor and using the rotor of this method manufacture |
| FR3069732A1 (en) * | 2017-07-31 | 2019-02-01 | Moteurs Leroy-Somer | CAGE ROTOR INJECTED |
| WO2019025353A1 (en) | 2017-07-31 | 2019-02-07 | Moteurs Leroy-Somer | Squirrel-cage rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20140618 |
|
| EXPY | Termination of patent right or utility model |