CN203069442U - Fixture for four-point bending fatigue and static fracture tests of stator bars of large generators - Google Patents
Fixture for four-point bending fatigue and static fracture tests of stator bars of large generators Download PDFInfo
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- CN203069442U CN203069442U CN 201220604720 CN201220604720U CN203069442U CN 203069442 U CN203069442 U CN 203069442U CN 201220604720 CN201220604720 CN 201220604720 CN 201220604720 U CN201220604720 U CN 201220604720U CN 203069442 U CN203069442 U CN 203069442U
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- point bending
- anchor clamps
- fixture
- static
- stator bars
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Abstract
The utility model relates to a fixture for four-point bending fatigue and static fracture tests of stator bars of large generators. The fixture is composed of an upper fixture and a lower fixture. The fixture disclosed by the utility model is practical and safe, suitable for four-point bending static fracture tests, four-point bending dynamic fatigue tests and four-point bending static/dynamic creep tests of thermal power stator bars, nuclear power stator bars and hydroelectric power stator bars and capable of effectively testing the mechanical properties of insulation structures of the stator bars.
Description
Technical field: the utility model relates to the tired and static tearing test anchor clamps of a kind of large generator stator bar four-point bending.
Background technology: large generator stator bar will be subjected to the influence of electric stress, thermal stress, environmental stress and mechanical stress in actual motion.Up to the present, reliability consideration to large generator stator bar is primarily aimed in electricity, heat and environmental stress, to the research of mechanical stress seldom, there are not unified Study on Mechanical Properties method and standard both at home and abroad, the key equipment of research large generator stator bar mechanical property is suitable anchor clamps, only it need be added on the testing machine of holding suitable tonnage to get final product.
The shortcoming of present existing fatigue and tearing test anchor clamps is as follows:
1) size is less, is only applicable to the mechanical test of insulating laminated product or line rod intercepting sample, whole large scale insulation system is not carried out the anchor clamps of mechanical property.
2) only be directed to three-point bending design, anchor clamps are single.Compare with the tearing test anchor clamps with four-point bending fatigue, owing in the process of three-point bending, except normal stress, also have shear stress, thus make test findings become complicated, analyze difficulty.And four-point bending can make test product be in the state of pure bending in process of the test, and test findings is oversimplified, and can really check the eigenvalue of test product mechanical property.
Summary of the invention: large generator stator bar four-point bending dynamic fatigue and static fracture anchor clamps that the purpose of this utility model provides a kind of practicality, safety, carry out four-point bending dynamic fatigue test and static tearing test with the line rod to various sizes.The technical solution of the utility model is: be made up of last anchor clamps, lower clamp, the first cylindricality chuck and first jig are gone up anchor clamps by bolt being incorporated into to constitute on first back up pad, and the second cylindricality chuck and second jig constitute lower clamp by bolt being incorporated on second back up pad.
The material of last anchor clamps is the stainless steel material of good mechanical performance.The first cylindricality chuck and first jig are gone up anchor clamps by bolt being incorporated into to constitute on first back up pad.The first cylindricality chuck is that cylinder is trapezoidal, and symmetry is bored 10 M10 holes on it; Back up pad is rectangular configuration, and the edge removes elongated steel bar, and 10 M10 holes are bored along center line in two ends, the left and right sides; First jig is the L type, is drilled with 2 M10 holes on it.
The material of lower clamp is the stainless steel material of good mechanical performance.Only be that size is different with the difference of last anchor clamps.The second cylindricality chuck and second jig constitute lower clamp by bolt being incorporated on second back up pad.The second cylindricality chuck is that cylinder is trapezoidal, and symmetry is bored 10 M10 holes on it; Back up pad is rectangular configuration, and the edge removes elongated steel bar, and 10 M10 holes are bored along center line in two ends, the left and right sides; Second jig is the L type, is drilled with 2 M10 holes on it.
The static tearing test of four-point bending that four-point bending dynamic fatigue and static fracture anchor clamps are suitable for thermoelectricity stator bar, nuclear power stator bar, water power stator bar, the quiet dynamic creep of four-point bending dynamic fatigue test and four-point bending is tested, and can effectively check the mechanical property of stator bar insulation system.
Description of drawings:
Fig. 1 is the tired and static tearing test anchor clamps arrangenent diagram of large generator stator bar four-point bending
Embodiment:
As shown in Figure 1, the utility model is the tired and tearing test anchor clamps of a kind of brand-new large generator stator bar four-point bending, is made up of last anchor clamps 1, lower clamp 2.
Last anchor clamps are made up of the first cylindricality chuck, 3, the first back up pads 4 and first jig 5, are the stainless steel material of good mechanical performance, and total length is 800mm.The overall height of the first cylindricality chuck 3 is 100mm, and the top height is 85mm, and diameter is φ 20; The bottom height is 15mm, and diameter is φ 70, and symmetry is drilled with the hole of 4 φ 10 on the lower cylindrical.First back up pad 4 is approximate rectangular structure, and wide is 100mm, and height is 50mm, and coboundary removes the elongated steel bar of 5mm * 5mm; The hole of 10 M10 is bored at two ends, the left and right sides along center line.First jig 5 is the L type, is drilled with the hole of two M10 on it, and spacing is 40mm.The first cylindricality chuck 3 and first jig 5 constitute anchor clamps 1 by bolt 6 being incorporated on first back up pad 4.
Lower clamp is made up of the second cylindricality chuck 7, second back up pad 8 and second jig 9, also is the stainless steel material of good mechanical performance, and total length is 250mm.Lower clamp is identical with last clamp structure.The second cylindricality chuck 7 and second jig 9 constitute jig down by bolt 6 being incorporated on second back up pad 8.
Claims (4)
- A large generator stator bar four-point bending tired with static tearing test anchor clamps, it is characterized in that: formed by last anchor clamps (1), lower clamp (2), the first cylindricality chuck (3) and first jig (5) are gone up anchor clamps (1) by bolt (6) being incorporated into to constitute on first back up pad (4), and the second cylindricality chuck (7) and second jig (9) are gone up formation lower clamp (2) by bolt (6) being incorporated into second back up pad (8).
- A kind of large generator stator bar four-point bending according to claim 1 tired with static tearing test anchor clamps, it is characterized in that: the first and second cylindricality chucks are that cylinder is trapezoidal.
- A kind of large generator stator bar four-point bending according to claim 1 tired with static tearing test anchor clamps, it is characterized in that: first and second back up pads are rectangular configuration.
- A kind of large generator stator bar four-point bending according to claim 1 tired with static tearing test anchor clamps, it is characterized in that: first and second jigs are the L type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604720 CN203069442U (en) | 2012-11-16 | 2012-11-16 | Fixture for four-point bending fatigue and static fracture tests of stator bars of large generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604720 CN203069442U (en) | 2012-11-16 | 2012-11-16 | Fixture for four-point bending fatigue and static fracture tests of stator bars of large generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069442U true CN203069442U (en) | 2013-07-17 |
Family
ID=48768216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604720 Expired - Fee Related CN203069442U (en) | 2012-11-16 | 2012-11-16 | Fixture for four-point bending fatigue and static fracture tests of stator bars of large generators |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203069442U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089812A (en) * | 2014-04-09 | 2014-10-08 | 北京工业大学 | Four-point method apparatus used for uniformly applying stress to film sample |
| CN105547876A (en) * | 2015-12-29 | 2016-05-04 | 东南大学 | Experimental device for bending corrosion fatigue of materials |
| CN111735687A (en) * | 2020-06-09 | 2020-10-02 | 东南大学 | Four-point bending device for integral stability test of loading point constraint type steel beam |
| CN112557181A (en) * | 2020-12-01 | 2021-03-26 | 郑州大学 | Clamp for realizing four-point bending and four-point shearing fatigue of positive and negative stress ratios of rock concrete |
-
2012
- 2012-11-16 CN CN 201220604720 patent/CN203069442U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089812A (en) * | 2014-04-09 | 2014-10-08 | 北京工业大学 | Four-point method apparatus used for uniformly applying stress to film sample |
| CN105547876A (en) * | 2015-12-29 | 2016-05-04 | 东南大学 | Experimental device for bending corrosion fatigue of materials |
| CN111735687A (en) * | 2020-06-09 | 2020-10-02 | 东南大学 | Four-point bending device for integral stability test of loading point constraint type steel beam |
| CN111735687B (en) * | 2020-06-09 | 2022-04-05 | 东南大学 | Four-point bending device for integral stability test of loading point constraint type steel beam |
| CN112557181A (en) * | 2020-12-01 | 2021-03-26 | 郑州大学 | Clamp for realizing four-point bending and four-point shearing fatigue of positive and negative stress ratios of rock concrete |
| CN112557181B (en) * | 2020-12-01 | 2023-06-09 | 郑州大学 | Clamp for realizing four-point bending and four-point shearing fatigue of rock concrete with positive and negative stress ratio |
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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: 20130717 Termination date: 20171116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |