CN203241295U - Self-centering four-point bending fatigue test fixture for small samples - Google Patents
Self-centering four-point bending fatigue test fixture for small samples Download PDFInfo
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- CN203241295U CN203241295U CN 201320262017 CN201320262017U CN203241295U CN 203241295 U CN203241295 U CN 203241295U CN 201320262017 CN201320262017 CN 201320262017 CN 201320262017 U CN201320262017 U CN 201320262017U CN 203241295 U CN203241295 U CN 203241295U
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- support seat
- centering
- point bending
- bending fatigue
- fatigue test
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Abstract
The utility model discloses a self-centering four-point bending fatigue test fixture for small samples. The self-centering four-point bending fatigue test fixture comprises a first connecting rod, a second connecting rod, an upper supporting seat and a lower supporting seat, wherein the upper part of the upper supporting seat is hinged with the lower part of the second connecting rod through a second swinging pin; the upper part of the second connecting rod is hinged with the first connecting rod through a first swinging pin; according to the four-point bending fatigue test fixture, the upper part of the upper supporting seat is hinged with the lower part of the second connecting rod through the second swinging pin; the upper part of the second connecting rod is hinged with the first connecting rod through the first swinging pin. Through the arrangement of the two swinging pins, when loading is performed in an experiment, the direction of the upper supporting seat can be adjusted automatically in the length and width directions of the samples respectively, so that the load centering performance of the samples is ensured, and the experimental result precision is improved.
Description
[technical field]
The utility model relates to a kind of mechanical clamp, particularly a kind of mechanical clamp that carries out the four-point bending torture test for small sample.
[background technology]
The four-point bending torture test can apply equally distributed drawing stress at specimen surface, and specimen shape is required simple, common sample only need to have the square-section and get final product, the installation of sample and unload carried convenient when testing in addition, so the four-point bending fatigue experiment has obtained extensive application in the research of fatigue of materials performance, Crack Extension and cyclic loading lower surface Evolution Microstructure.The four-point bending fatigue experiment requires load centering, and present four-point bending fatigue test clamper does not have alignment function usually.For small size sample, if the load centering is relatively poor, will cause the specimen surface stress distribution significantly inhomogeneous, thereby reduce the experimental result precision.
[utility model content]
The purpose of this utility model is to provide a kind of simple in structure, easy to use, small sample that precision is high from centering four-point bending fatigue test clamper, can not carry out the problem of centering to solve existing test fixture, the centering of load during warranty test.
To achieve these goals, the utility model adopts following technical scheme:
A kind of small sample comprises head rod, the second connecting link, upper support seat and lower support seat from centering four-point bending fatigue test clamper; The top of upper support seat is by the lower hinge of the second rocking pin and the second connecting link; The top of the second connecting link is hinged by the first rocking pin and head rod.
The utility model further improves and is: the axis of the axis of the first rocking pin and the second rocking pin is perpendicular.
The utility model further improves and is: the top of the bottom of upper support seat and lower support seat is equipped with chute, is movably installed with two slide blocks in the chute on lower support seat top, is movably installed with two slide blocks in the chute of upper support seat bottom; The front end of four slide blocks all is fixed with roller bearing by bungee.
The utility model further improves and is: be equipped with rule on upper support seat and the lower support seat.
The utility model further improves and is: two of the chutes of upper support seat and lower support seat respectively are provided with a locating slot, and two pilot pins are installed in a pair of locating slot corresponding on upper support seat and the lower support seat.
The utility model further improves and is: the first rocking pin enough makes the second connecting link adjust direction along the specimen length direction.
The utility model further improves and is: the second rocking pin can make upper support seat adjust direction along the specimen width direction.
With respect to prior art, the utlity model has following beneficial effect: these four-point bending fatigue experiment anchor clamps pass through the lower hinge of the second rocking pin and the second connecting link on the top of upper support seat, the top of the second connecting link is hinged by the first rocking pin and head rod; The utility model when experiment loads, can make upper support seat automatically adjust direction along specimen length, Width respectively by two rocking pins are set, and guarantees the centering of the suffered load of sample, improves the experimental result precision.
[description of drawings]
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the decomposed figure of Fig. 1;
Fig. 3 is the view at another visual angle of head rod among Fig. 1.
Wherein: 1, head rod; 2, the first rocking pin; 3, the second connecting link; 4, the second rocking pin; 5, upper support seat; 6, slide block; 7, roller bearing; 8, pilot pin; 9, lower support seat.
[embodiment]
See also Fig. 1 to shown in Figure 3, a kind of small sample of the utility model comprises upper support seat 5 and lower support seat 9 from centering four-point bending fatigue test clamper; The top of the bottom of upper support seat 5 and lower support seat 9 is equipped with chute, is movably installed with two slide blocks 6 in the chute on lower support seat 9 tops, is movably installed with two slide blocks 6 in the chute of upper support seat 5 bottoms; The front end of slide block 6 is fixed with roller bearing 7 by bungee; Slide block 6 can slide in chute, to adjust two spacings between the slide block 6.
The top of upper support seat 5 is by the lower hinge of the second rocking pin 4 and the second connecting link 3; The top of the second connecting link 3 is hinged with head rod 1 by the first rocking pin 2; The axis of the axis of the first rocking pin 2 and the second rocking pin 4 is perpendicular.
Be equipped with rule on upper support seat 5 and the lower support seat 9; Two of the chutes of upper support seat 5 and lower support seat 9 respectively are provided with a locating slot, and two pilot pins 8 are installed in the locating slot corresponding on upper support seat 5 and the lower support seat 9, and upper support seat 5 and lower support seat 9 are carried out the centering location.
When carrying out four-point bending torture test test, respectively head rod 1 and lower support seat 9 are added on the upper and lower anchor clamps that are held in experimental machine; Then unload pilot pin 8.According to requirement of experiment, utilize the scale on the supporting seat, adjust respectively the slide position.Sample is placed on the slide block of lower support seat, guarantees that by the scale on the lower support seat and center line sample is placed on the center.Like this, when loading, utilize the first rocking pin 2 and the second rocking pin 4, can realize all around adjustment of upper support seat 5, thus guarantee load in and experimental precision.
Claims (5)
1. a small sample is characterized in that from centering four-point bending fatigue test clamper, comprises head rod (1), the second connecting link (3), upper support seat (5) and lower support seat (9); The top of upper support seat (5) is by the lower hinge of the second rocking pin (4) with the second connecting link (3); The top of the second connecting link (3) is hinged by the first rocking pin (2) and head rod (1).
2. small sample according to claim 1 is characterized in that from centering four-point bending fatigue test clamper, and the axis of the axis of the first rocking pin (2) and the second rocking pin (4) is perpendicular.
3. small sample according to claim 1 is from centering four-point bending fatigue test clamper, it is characterized in that, the top of the bottom of upper support seat (5) and lower support seat (9) is equipped with chute, be movably installed with two slide blocks in the chute on lower support seat (9) top, be movably installed with two slide blocks in the chute of upper support seat (5) bottom; The front end of four slide blocks all is fixed with roller bearing by bungee.
4. small sample according to claim 1 is characterized in that from centering four-point bending fatigue test clamper, is equipped with rule on upper support seat (5) and the lower support seat (9).
5. small sample according to claim 1 is from centering four-point bending fatigue test clamper, it is characterized in that, two of the chutes of upper support seat (5) and lower support seat (9) respectively are provided with a locating slot, and two pilot pins (8) are installed in upper support seat (5) and the upper corresponding a pair of locating slot of lower support seat (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320262017 CN203241295U (en) | 2013-05-14 | 2013-05-14 | Self-centering four-point bending fatigue test fixture for small samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320262017 CN203241295U (en) | 2013-05-14 | 2013-05-14 | Self-centering four-point bending fatigue test fixture for small samples |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241295U true CN203241295U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320262017 Expired - Lifetime CN203241295U (en) | 2013-05-14 | 2013-05-14 | Self-centering four-point bending fatigue test fixture for small samples |
Country Status (1)
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| CN (1) | CN203241295U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674692A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Three/four-point bending performance test general clamp for material |
| CN106053217A (en) * | 2016-05-12 | 2016-10-26 | 上海工程技术大学 | Multifunctional T type sample stretching and fatigue experiment clamp |
| CN108195668A (en) * | 2018-04-02 | 2018-06-22 | 福州大学 | The fixture and application method of tensile creep fatigue test clamping band radian sample |
| CN109357931A (en) * | 2017-11-20 | 2019-02-19 | 北京航空航天大学 | A kind of more testpieces high temperature resistant fatigue testing clamping devices |
| CN109443959A (en) * | 2018-10-31 | 2019-03-08 | 上海交通大学 | A kind of 4 points of curved sample fatigue crack initiation loading devices |
| CN109459305A (en) * | 2018-12-11 | 2019-03-12 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete for hydraulic structure Fatigue Cracking Test device |
-
2013
- 2013-05-14 CN CN 201320262017 patent/CN203241295U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674692A (en) * | 2013-12-06 | 2014-03-26 | 中国航空工业集团公司北京航空材料研究院 | Three/four-point bending performance test general clamp for material |
| CN103674692B (en) * | 2013-12-06 | 2016-02-24 | 中国航空工业集团公司北京航空材料研究院 | A kind of material three, four-point bending performance test universal fixturing |
| CN106053217A (en) * | 2016-05-12 | 2016-10-26 | 上海工程技术大学 | Multifunctional T type sample stretching and fatigue experiment clamp |
| CN109357931A (en) * | 2017-11-20 | 2019-02-19 | 北京航空航天大学 | A kind of more testpieces high temperature resistant fatigue testing clamping devices |
| CN108195668A (en) * | 2018-04-02 | 2018-06-22 | 福州大学 | The fixture and application method of tensile creep fatigue test clamping band radian sample |
| CN109443959A (en) * | 2018-10-31 | 2019-03-08 | 上海交通大学 | A kind of 4 points of curved sample fatigue crack initiation loading devices |
| CN109459305A (en) * | 2018-12-11 | 2019-03-12 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete for hydraulic structure Fatigue Cracking Test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
|
| CX01 | Expiry of patent term |