CN108777539A - A kind of motor cage rotor structure with siphon diversion trench - Google Patents
A kind of motor cage rotor structure with siphon diversion trench Download PDFInfo
- Publication number
- CN108777539A CN108777539A CN201810668315.1A CN201810668315A CN108777539A CN 108777539 A CN108777539 A CN 108777539A CN 201810668315 A CN201810668315 A CN 201810668315A CN 108777539 A CN108777539 A CN 108777539A
- Authority
- CN
- China
- Prior art keywords
- diversion trench
- conducting bar
- groove
- end ring
- siphon
- 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.)
- Pending
Links
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
- H02K17/165—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors characterised by the squirrel-cage or other short-circuited windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The present invention relates to squirrel cage motor rotor structure related field, specifically a kind of motor cage rotor structure with siphon diversion trench, it is intended to solve the low technical problem of existing conducting bar end ring welding reliability.It adopts the following technical scheme that：Including rotor core, rotor core is embedded with several conducting bars being axially distributed, all conducting bar ends at the axial both ends and the same side that the both ends of conducting bar stretch in rotor core outside respectively axially flush, the axially inner side end face of end ring is provided with the annular groove coaxial with end ring, the end of conducting bar is welded in groove, and the slot bottom of groove has additional a cricoid diversion trench, and diversion trench is coaxial with end ring, the radial width of diversion trench is less than the radial width of conducting bar end, and the groove depth of diversion trench is 0.1mm-0.5mm.When welding, due to siphon principle, the solder of liquid can be filled in diversion trench, so that conducting bar end major part region is passed through solder and be securely welded as a whole with end ring.Present invention is mainly used on the rotor cage structure fabrication of squirrel cage asynchronous motor.
Description
Technical field
The present invention relates to squirrel cage motor rotor structure related field, specifically a kind of motor mouse cage with siphon diversion trench
Rotor structure.
Background technology
Currently, squirrel cage asynchronous motor with its making simple, easy care advantage by the favor of motor user to
It has obtained commonly used.The rotor cage of existing squirrel cage asynchronous motor passes through weldering by two end ring and a certain number of conducting bars
The mode of connecing is constituted.When existing rotor end ring and conducting bar weld, the end of conducting bar is fitted tightly over complete in the groove of end ring end face
At welding, or it is welded in the groove of end ring again after conducting bar end processes many places zigzag slot.The former, which is welded to connect face, has
Limit, soldering reliability are relatively low；The latter processes the structure of many places zigzag slot in conducting bar end, and processing is complicated, fill solder amount
Greatly, and due to the surface tension effects of liquid solder, bubble easily is generated in the root of serrated slot, forms weld defect so that
Soldering reliability is relatively low.
Invention content
Present invention seek to address that the technical problem that existing conducting bar end ring welding reliability is low.For this purpose, the present invention proposes one kind
Motor cage rotor structure with siphon diversion trench.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of motor cage rotor structure with siphon diversion trench, including rotor core, the rotor core is embedded with several
The conducting bar being axially distributed, the both ends of the conducting bar are outer respectively to stretch in the axial both ends of rotor core and all conducting bar ends of the same side
Portion axially flushes, and further includes two end ring for being located at conducting bar both ends, and the axially inner side end face of the end ring is provided with and holds
The end of the coaxial annular groove of ring, the conducting bar is welded in the groove, and it is cricoid that the slot bottom of the groove has additional one
Diversion trench, the diversion trench and end ring are coaxial, and the radial width of diversion trench is less than the radial width of conducting bar end, the slot of diversion trench
Depth is 0.1mm-0.5mm.When assembly, conducting bar is passed through into rotor core first, it is tight using certain impact tensioner or clamp fixture
Gu after, the end face to stretching in rotor core both sides outside conducting bar, which is processed, keeps its smooth, then by the vertical placement of entire rotor, i.e.,
It is axially perpendicular to ground, so that the lower end of all conducting bars is all placed in the groove of end ring, then place solid solder into groove, Gu
Body solder turns to rapidly liquid under Medium frequency induction soldering equipment working condition, since the radial width of diversion trench is less than conducting bar
Radial width can be shelved on the slot bottom of groove, but can form narrow space between diversion trench when conducting bar is placed in groove, institute
Narrow space is stated because local heating generates negative pressure, due to siphon principle, the dual work of the solder of liquid in draught head and gravity
Under, flowing, infiltration are filled in the small space, and it is firm with end ring by solder to reach conducting bar end major part region
It is welded as a whole.
The beneficial effects of the invention are as follows：The present invention provides a kind of motor cage-shaped structure with siphon diversion trench, in end ring
Groove slot bottom be arranged again there are one diversion trench, the radial width of diversion trench is less than the end radial width of conducting bar, and conducting bar is placed in
It can be placed in the bottom of groove when in groove, be formed with small space between conducting bar and diversion trench, when welding, the solder of liquid can
By siphon principle sucking, small space is penetrated into, the bonding area of conducting bar is considerably increased, improves soldering reliability, and
Groove depth 0.1-0.5mm not only saves solder, and not will produce bubble, avoids the generation of weld defect, further increases
The reliability of welding.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the end ring structure schematic diagram of the present invention.
Specific implementation mode
Referring to figs. 1 to Fig. 2, a kind of motor cage rotor structure with siphon diversion trench of the invention, including rotor iron
Core 1, the rotor core 1 are embedded with several conducting bars 2 being axially distributed, and the both ends of the conducting bar 2 are outer respectively to stretch in rotor core 1
Axial both ends and 2 end of all conducting bars of the same side axially flush, further include two end ring 3 for being located at 2 both ends of conducting bar,
The axially inner side end face of the end ring 3 is provided with the annular groove 4 coaxial with end ring 3, and the end of the conducting bar 2 is welded in described
In groove 4, the slot bottom of the groove 4 has additional a cricoid diversion trench 5, and the diversion trench 5 and end ring 3 are coaxial, diversion trench 5
Radial width is less than the radial width of 2 end of conducting bar, and the groove depth of diversion trench 5 is 0.1mm-0.5mm.When assembly, first by conducting bar 2
Across rotor core 1, after certain impact tensioner or clamp fixture fastening, to stretching in 1 both sides of rotor core outside conducting bar 2
End face, which is processed, keeps its smooth, then by the vertical placement of entire rotor, that is, is axially perpendicular to ground, makes under all conducting bars 2
End is all placed in the groove 4 of end ring 3, then solid solder is placed into groove 4, and solid solder works in Medium frequency induction soldering equipment
Under state, liquid is turned to rapidly, and since the radial width of diversion trench 5 is less than the radial width of conducting bar 2, conducting bar 2 is placed in groove 4
When can be shelved on the slot bottom of groove 4, but narrow space can be formed between diversion trench 5, the narrow space because part by
Heat generates negative pressure, and due to siphon principle, under the double action of draught head and gravity, flowing, infiltration are filled in the solder of liquid
In the small space, reaches 2 end major part region of conducting bar and be firmly welded as a whole by solder and end ring 3.Here, slot
Deep 0.1mm-0.5mm is preferred groove depth size, is obtained by many experiments test, 0.1mm such as can be used, can also be used
0.3mm, or 0.5mm is used, specific optimal size is related to the specific size of conducting bar 2 and end ring 3.
As a kind of preferred fixed form that conducting bar 2 is changed with end, the radial width of the conducting bar 2 is less than the groove 4
The radially inner side of radial width, the conducting bar 2 is abutted with the radially inner side of groove 4 or the radial outside of conducting bar 2 and groove 4
Radial outside abuts.In welding, conducting bar 2 is radially formed with end ring 3 and is had the gap, and solder is filled in gap, it is possible to increase lead
The fastness that item 2 is connect with end ring 3.Preferably, between being provided between the radially inner side of the groove 4 and the radially inner side of conducting bar 2
Gap, and solder is filled in the gap, enhance the fastness that 2 radially inner side of conducting bar is connect with end ring 3.
The groove depth of a kind of preferred size of groove depth as diversion trench 5, the diversion trench 5 is 0.3mm.
As a kind of preferred mounting means of the conducting bar 2 on rotor core 1, the rotor core 1 is circumferentially evenly equipped with several
Axially distributed mounting groove, the conducting bar 2 are inlaid in the mounting groove.
The above concrete structure and dimension data are to be illustrated to presently preferred embodiments of the present invention, but the present invention creates
It makes and is not limited to the embodiment, those skilled in the art can also make kind under the premise of without prejudice to spirit of that invention
The equivalent variations or replacement, these equivalent deformations or replacement of kind are all contained in the application claim limited range.
Claims (5)
1. a kind of motor cage rotor structure with siphon diversion trench, including rotor core（1）, the rotor core（1）It is embedding
Equipped with several conducting bars being axially distributed（2）, the conducting bar（2）Both ends outer respectively stretch in rotor core（1）Axial both ends and
All conducting bars of the same side（2）End axially flushes, and further includes two and is located at conducting bar（2）The end ring at both ends（3）, the end
Ring（3）Axially inner side end face be provided with and end ring（3）The groove of coaxial annular（4）, the conducting bar（2）End be welded in
The groove（4）In, it is characterised in that：The groove（4）Slot bottom have additional one annular diversion trench（5）, the annular
Diversion trench（5）With end ring（3）Coaxially, diversion trench（5）Radial width be less than conducting bar（2）The radial width of end, diversion trench（5）
Groove depth be 0.1mm-0.5mm.
2. a kind of motor cage rotor structure with siphon diversion trench according to claim 1, it is characterised in that：It is described
Conducting bar（2）Radial width be less than the groove（4）Radial width, the conducting bar（2）Radially inner side and groove（4）Diameter
Abutting or conducting bar inwardly（2）Radial outside and groove（4）Radial outside abut.
3. a kind of motor cage rotor structure with siphon diversion trench according to claim 2, it is characterised in that：It is described
Groove（4）Radially inner side and conducting bar（2）Radially inner side between be provided with gap, and solder is filled in the gap.
4. a kind of motor cage rotor structure with siphon diversion trench according to claim 1, it is characterised in that：It is described
Diversion trench（5）Groove depth be 0.3mm.
5. a kind of motor cage rotor structure with siphon diversion trench according to claim 1, it is characterised in that：It is described
Rotor core（1）Circumferentially it is evenly equipped with several axially distributed mounting grooves, the conducting bar（2）It is inlaid in the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810668315.1A CN108777539A (en) | 2018-06-26 | 2018-06-26 | A kind of motor cage rotor structure with siphon diversion trench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810668315.1A CN108777539A (en) | 2018-06-26 | 2018-06-26 | A kind of motor cage rotor structure with siphon diversion trench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108777539A true CN108777539A (en) | 2018-11-09 |
Family
ID=64025637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810668315.1A Pending CN108777539A (en) | 2018-06-26 | 2018-06-26 | A kind of motor cage rotor structure with siphon diversion trench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108777539A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3413519A1 (en) * | 1984-04-10 | 1985-10-31 | Siemens AG, 1000 Berlin und 8000 München | Squirrel-cage rotor for an electrical machine |
| JPH08266024A (en) * | 1995-03-23 | 1996-10-11 | Toshiba Corp | Rotor of rotating electric machine |
| CN1182970A (en) * | 1996-11-15 | 1998-05-27 | 三菱电机株式会社 | Rotor of squirrel-cage induction motor and making method |
| CN202957678U (en) * | 2012-10-26 | 2013-05-29 | 重庆赛力盟电机有限责任公司 | Novel copper terminal ring of motor rotor |
| CN204216697U (en) * | 2014-11-27 | 2015-03-18 | 南车株洲电机有限公司 | A kind of end ring welding assembly |
-
2018
- 2018-06-26 CN CN201810668315.1A patent/CN108777539A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3413519A1 (en) * | 1984-04-10 | 1985-10-31 | Siemens AG, 1000 Berlin und 8000 München | Squirrel-cage rotor for an electrical machine |
| JPH08266024A (en) * | 1995-03-23 | 1996-10-11 | Toshiba Corp | Rotor of rotating electric machine |
| CN1182970A (en) * | 1996-11-15 | 1998-05-27 | 三菱电机株式会社 | Rotor of squirrel-cage induction motor and making method |
| CN202957678U (en) * | 2012-10-26 | 2013-05-29 | 重庆赛力盟电机有限责任公司 | Novel copper terminal ring of motor rotor |
| CN204216697U (en) * | 2014-11-27 | 2015-03-18 | 南车株洲电机有限公司 | A kind of end ring welding assembly |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181109 |
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| RJ01 | Rejection of invention patent application after publication |