CN202931051U - Rotor copper bar conducting bar clearance elimination structure - Google Patents
Rotor copper bar conducting bar clearance elimination structure Download PDFInfo
- Publication number
- CN202931051U CN202931051U CN 201220547368 CN201220547368U CN202931051U CN 202931051 U CN202931051 U CN 202931051U CN 201220547368 CN201220547368 CN 201220547368 CN 201220547368 U CN201220547368 U CN 201220547368U CN 202931051 U CN202931051 U CN 202931051U
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- CN
- China
- Prior art keywords
- sliver
- copper bar
- conducting bar
- bar
- rotor
- 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
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Abstract
The utility model relates to a rotor copper bar conducting bar clearance elimination structure which comprises a conducting bar. The conducting bar is arranged in a rotor iron core in a penetration manner. The surface of one side of the conducting bar is provided with a middle part, a transition part and an end part. The section of the middle part gradually decreases toward the end part through the transition part. The rotor copper bar conducting bar clearance elimination structure is characterized in that the transition part comprises a oblique plane section; the bottom of the oblique plane section is connected with the end part through a smooth transition curved surface; and the length of the end part of the conducting bar is 8 to 10mm. According to the utility model, the processing amount of the end part of the conducting bar is less; after intermediate frequency welding, local stress concentration of the copper bar conducting bar can be effectively reduced and even eliminated; and the service life of a rotor copper bar is prolonged.
Description
Technical field
The utility model belongs to the rotor technical field, is specifically related to a kind of copper bar rotor sliver gap-eliminating structure.
Background technology
At present, in copper bar rotor sliver and end ring medium frequency welding termination process, because end ring self can expanded by heating, after being welded into integral body with the copper bar sliver, again due to the restriction of copper bar sliver, make end ring can't be retracted to original size in cooling procedure, therefore, end ring can produce a pulling force that points to rotor axis to copper bar sliver end, and the copper bar sliver is in the cantilever force state, outer surface is tension stress, and inner surface is compression.If the rough transition of tension stress can produce stress raisers in this position, this can make significantly reduce the fatigue life of this position, is very easy to crack and causes the copper bar bar failure.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of copper bar rotor sliver gap-eliminating structure, and it can after the intermediate frequency welding, can effectively reduce the stress raisers of even eliminating the copper bar sliver, the useful life of Extending Rotor copper bar.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of copper bar rotor sliver gap-eliminating structure, comprise sliver, described sliver is arranged in rotor core inside, the surface of described sliver one side has pars intermedia, transition part and end, the cross section of pars intermedia reduces to the end gradually via transition part, it is characterized in that: described transition part comprises oblique planar section, and the curved surface of the bottom of described oblique planar section by rounding off is connected with described end, and the length of described sliver end is 8-10mm.
The beneficial effects of the utility model: at first, long for present copper bar rotor sliver end cantilever, general length is the 40mm left and right, cause in welding the sliver root excessive defective that meets with stresses, the utility model reduces the length of sliver end, and making its length is 8-10mm, by test, the stress that in welding, sliver bears can be effectively reduced, allowance can also be reduced; Secondly, the design that the oblique planar section bottom curved surface by rounding off is connected with described end, the concentration of local stress that can effectively disperse sliver to bear has reduced stress concentrated to a certain extent.To sum up, the utility model can effectively reduce and disperse the useful life of the suffered concentration of local stress of copper bar sliver, Extending Rotor copper bar.
Further, the length of described sliver end is 8mm.Test shows, the sliver end of this kind design length can better reduce stress.
Further, the chamfering of oblique planar section is 30
oThe chamfer design of oblique planar section is 30
o, and having the curved surface of rounding off in bottom and end, this shape can better reduce and disperse concentration of local stress.
Description of drawings
Fig. 1 is the structural representation of the utility model copper bar rotor sliver gap-eliminating structure embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1, a kind of copper bar rotor sliver of the present embodiment gap-eliminating structure, comprise sliver, described sliver is arranged in rotor core inside, and described end face of iron core 1 is stretched out at two ends, as shown in the figure, the surface on described sliver top has pars intermedia 2, transition part 3 and end 4, and the cross section of pars intermedia 24 reduces to the end gradually via transition part 3; Described transition part 3 comprises oblique planar section 5, and the bottom of described oblique planar section is connected with described end 4 by the curved surface 6 of rounding off, and the chamfering of the oblique planar section of the present embodiment is 30
oLength value between 8-10mm of described sliver end, the length of the preferred sliver of the present embodiment end is 8mm.
Compare with existing structure, the utility model can effectively reduce the stress that the copper bar sliver bears due to self thermal deformation when copper bar rotor sliver and end ring welding, can effectively reduce the effect that stress is concentrated simultaneously, the useful life of Extending Rotor copper bar.
Above-described is only preferred implementation of the present utility model, should be understood that for a person skilled in the art, under the prerequisite that does not break away from the utility model structure, can also make some distortion and improvement, these can not affect effect and practical applicability that the utility model is implemented.
Claims (3)
1. copper bar rotor sliver gap-eliminating structure, comprise sliver, described sliver is arranged in rotor core inside, the surface of described sliver one side has pars intermedia, transition part and end, the cross section of pars intermedia reduces to the end gradually via transition part, it is characterized in that: described transition part comprises oblique planar section, and the curved surface of the bottom of described oblique planar section by rounding off is connected with described end, and the length of described sliver end is 8-10mm.
2. copper bar rotor sliver gap-eliminating structure according to claim 1 is characterized in that: the length of described sliver end is 8mm.
3. copper bar rotor sliver gap-eliminating structure according to claim 1, it is characterized in that: the chamfering of oblique planar section is 30
o
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547368 CN202931051U (en) | 2012-10-24 | 2012-10-24 | Rotor copper bar conducting bar clearance elimination structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220547368 CN202931051U (en) | 2012-10-24 | 2012-10-24 | Rotor copper bar conducting bar clearance elimination structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202931051U true CN202931051U (en) | 2013-05-08 |
Family
ID=48220961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220547368 Expired - Fee Related CN202931051U (en) | 2012-10-24 | 2012-10-24 | Rotor copper bar conducting bar clearance elimination structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202931051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508400A (en) * | 2017-09-11 | 2017-12-22 | 合肥恒大江海泵业股份有限公司 | A kind of copper bar rotor |
-
2012
- 2012-10-24 CN CN 201220547368 patent/CN202931051U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508400A (en) * | 2017-09-11 | 2017-12-22 | 合肥恒大江海泵业股份有限公司 | A kind of copper bar 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20191024 |