CN105547819A - Annular sample stretching fixture - Google Patents
Annular sample stretching fixture Download PDFInfo
- Publication number
- CN105547819A CN105547819A CN201610059477.6A CN201610059477A CN105547819A CN 105547819 A CN105547819 A CN 105547819A CN 201610059477 A CN201610059477 A CN 201610059477A CN 105547819 A CN105547819 A CN 105547819A
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- China
- Prior art keywords
- jig body
- ring
- joint portion
- shaped sample
- stretching clamp
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides an annular sample stretching fixture which comprises an upper fixture body and a lower fixture body, wherein each of the upper fixture body and the lower fixture body comprises a fixing piece, a main combining part, a stretching piece and a back board; each fixing piece comprises a fixing part and a U-shaped groove; each fixing part is fixedly connected with a testing machine; a through hole is formed in each of two ends of each U-shaped groove; each main combining part passes through the through holes to be fixedly connected with the fixing piece; an assistant combining part cooperating with each main combining part is arranged at one end of the corresponding stretching piece; a hanging part used for hanging an annular sample is arranged at the other end of each stretching piece; each back board is fixedly connected with the back side of the fixing piece of the upper fixture body; the back parts of both the stretching piece of the upper fixture body and the stretching piece of the lower fixture body closely cling to the back boards. The stretching fixture disclosed by the invention is simple in structure, and convenient for loading and unloading the sample, and a sample deformation degree measurement method is simple and reliable, and also meets the standard requirements of testing.
Description
Technical field
The present invention relates to a kind of stretching clamp, particularly relate to a kind of ring-shaped sample stretching clamp.
Background technology
In practical engineering application, tubing is a kind of common material, and especially the secondary processing of tubing is most widely used.When secondary processing is carried out to tubing, require that tubing has certain plastic deformation ability, and the method evaluating pipe plastic deformation ability is the mechanical property by stretching experiment measuring tubing, the especially hoop mechanical property of tubing.
Although existing stretching clamp directly can test the hoop mechanical property of tubing, but fixture structure is complicated, handling sample and sample deformation measure difficulty, inconvenience is to a certain extent brought to operator, therefore, be badly in need of exploitation a kind of simple to operate, handling sample and sample deformation measure ring-type stretching clamp easily.
In view of above-mentioned defect, creator of the present invention obtains the present invention finally through long research and practice.
Summary of the invention
For solving the problem, the technical solution used in the present invention is, provides a kind of ring-shaped sample stretching clamp, comprises jig body and lower jig body, and described upper jig body and described lower jig body include: fixture, and it is connected with testing machine; Main joint portion, it is connected with described fixture; Tensioning member, its one end is provided with the secondary joint portion cooperatively interacted with described main joint portion, and the other end is provided with the suspension part for hanging ring-shaped sample.
Further, described suspension part is semicircle boss.
Further, described fixture comprises fixed part and U-shaped groove, and described fixed part is in order to be fixedly connected with described testing machine.
Further, described U-shaped groove two ends are respectively provided with a through hole, and described main joint portion is connected with described fixture through described through hole.
Further, described U-shaped recess width is consistent with described tensioning member width.
Further, when described main joint portion and described secondary joint portion in conjunction with time, there is space in described secondary joint portion and described U-shaped bottom portion of groove.
Further, described main joint portion is pin.
Further, described ring-shaped sample stretching clamp, also comprises a backboard, and described backboard is fixedly connected with the fixture dorsal part of described upper jig body.
Further, described backboard is all close at the tensioning member of described upper jig body and the tensioning member back of described lower jig body.
Further, described backboard is fixedly connected with described fixture dorsal part by screw.
Beneficial effect of the present invention is compared with the prior art: 1, when described main joint portion and described secondary joint portion in conjunction with time, described secondary joint portion and described U-shaped bottom portion of groove have space, what the existence in described space can make the tensioning member of described upper jig body relax completely with the tensioning member of described lower jig body contacts, thus avoids damaging described upper jig body and described lower jig body in contact process; When 2, filling ring-shaped sample, on the cylinder that the semicircle boss of the semicircle boss and described lower jig body that only described ring-shaped sample need be enclosed within described upper jig body combines, make handling ring-shaped sample very convenient; 3, measured by the semicircle boss relative distance of contactless Video Extensometer to the semicircle boss of described upper jig body and described lower jig body, indirectly can obtain the deformation extent of described ring-shaped sample, both simple and reliable, meet again the standard-required of test; If 4 described tensioning members damage or when needing to test the ring-shaped sample of different-diameter, only need hang on described main joint portion by the described tensioning member of coupling, it is convenient to change.
Accompanying drawing explanation
Fig. 1 is the structural representation of ring-shaped sample stretching clamp of the present invention;
Fig. 2 is the tensioning member structural representation of ring-shaped sample stretching clamp of the present invention;
Fig. 3 is the back structures schematic diagram of ring-shaped sample stretching clamp of the present invention.
Embodiment
Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
Refer to Fig. 1 and Fig. 2, it is respectively the structural representation of ring-shaped sample stretching clamp of the present invention and described tensioning member.
As shown in Figure 1, described ring-shaped sample stretching clamp comprises jig body and lower jig body, and described upper jig body and described lower jig body include: fixture, main joint portion 2, tensioning member 3.
Described fixture comprises fixed part 11 and U-shaped groove 12, described fixed part 11 is provided with threaded hole 13, described fixed part 11 is fixedly connected with testing machine test section through described threaded hole 13 by screw, described U-shaped groove 12 two ends are respectively provided with a through hole, described main joint portion 2 is connected with described fixture through described through hole, and described main joint portion 2 can be free to slide in described through hole.
Shown in composition graphs 2, described tensioning member 3, its one end is provided with the secondary joint portion 31 cooperatively interacted with described main joint portion 2, and the other end is provided with suspension part 32, and described suspension part 32 is semicircle boss, for hanging ring-shaped sample.Wherein, the width of described tensioning member 3 is consistent with the width of described U-shaped groove 12, can prevent described tensioning member 3 from horizontally slipping in process of the test, when described main joint portion 2 and described secondary joint portion 31 in conjunction with time, space 5 is there is bottom described secondary joint portion 31 and described U-shaped groove 12, described main joint portion 2 is pin, wherein, what the existence in described space 5 can make the tensioning member 3 of described upper jig body relax completely with the tensioning member 3 of described lower jig body contacts, thus avoid in contact process, damaging described upper jig body and described lower jig body, when the semicircle boss of described upper jig body to contact with the semicircle boss of described lower jig body be combined into a cylinder time, described ring-shaped sample is placed on described cylinder, ring-shaped sample described in conveniently assemble and disassemble, the existence in described space 5 can also be convenient for changing described tensioning member 3, if when described tensioning member 3 damages or needs to test the ring-shaped sample of different-diameter, only the described tensioning member 3 of coupling need be hung on described main joint portion 2.
Refer to Fig. 3, Fig. 3 is the back schematic diagram of ring-shaped sample stretching clamp of the present invention.
Shown in composition graphs 1, described ring-shaped sample stretching clamp also comprises backboard 4, its fixture dorsal part with described upper jig body is fixedly connected with by screw 41 by described backboard 4, during test, described backboard 4 is all close at the tensioning member 3 of described upper jig body and tensioning member 3 back of described lower jig body, the run-off the straight in process of the test of described tensioning member 3 can be prevented, make measurement data more accurate.
Wherein, upper jig body described above and described lower jig body all select nickel-bass alloy material to make, and can meet the tension test requirement of 650 DEG C of-800 DEG C of hot environments.
The assembling process of described upper jig body is: be first fixedly connected with testing machine test section by screw by described fixture, by the through hole of described main joint portion 2 through described U-shaped groove 12 both sides, then described tensioning member 3 is hung on described main joint portion 2, finally its fixture dorsal part with described upper jig body is fixedly connected with by screw by described backboard 4; The assembling process of described upper jig body can also be: first by the through hole of described main joint portion 2 through described U-shaped groove 12 both sides, described tensioning member 3 is hung on described main joint portion 2, then its fixture dorsal part with described upper jig body is fixedly connected with by screw by described backboard 4, finally described fixture is fixedly connected with testing machine test section by screw, the assembling process of described lower jig body is with described upper jig body, and on the above, the assembling process of jig body and described lower jig body is not restricted to this.During test, if described tensioning member 3 need be changed, the through hole of described main joint portion 2 from described U-shaped groove 12 can be extracted, take out described tensioning member 3, also detachable described backboard 4, take out described tensioning member 3.
After described upper jig body and described lower jig body assembling, testing machine brings into operation, fixing described lower jig body invariant position, only mobile described upper jig body, first described upper jig body is moved down, the semicircle boss of described upper jig body is contacted with the semicircle boss of described lower jig body and is combined into a cylinder, then described ring-shaped sample is placed on described cylinder, now move up described upper jig body, until when the tensioning member 3 of described lower jig body departs from the bottom of described U-shaped groove 12, start to observe, when the display screen be connected with testing machine shows certain external force time, stop mobile described upper jig body, now by the semicircle boss of jig body upper described in contactless Video Extensometer alignment lens and the semicircle boss of described lower jig body, regulate the lens focus of described contactless Video Extensometer, until on display screen the semicircle boss of described upper jig body and the position residing for semicircle boss of described lower jig body clear, can start to test, now, move up described upper jig body, the change of the upper semicircle boss of jig body and the semicircle boss relative distance of described lower jig body described in described contactless Video Extensometer Real-time Collection simultaneously, until time the display screen display be connected with testing machine is without external force, test terminates, described contactless Video Extensometer collection completes, by the change of the semicircle boss relative distance of the semicircle boss and described lower jig body of measuring described upper jig body, indirectly can obtain the deformation extent of described ring-shaped sample.
When testing machine brings into operation, also described upper jig body invariant position can be fixed, only mobile described lower jig body, first move up described lower jig body, the semicircle boss of described upper jig body is contacted with the semicircle boss of described lower jig body and is combined into a cylinder, then described ring-shaped sample is placed on described cylinder, now move down described lower jig body, until when the tensioning member 3 of described lower jig body departs from the bottom of described U-shaped groove 12, start to observe, when the display screen be connected with testing machine shows certain external force time, stop mobile described lower jig body, now by the semicircle boss of jig body upper described in contactless Video Extensometer alignment lens and the semicircle boss of described lower jig body, regulate the lens focus of described contactless Video Extensometer, until on display screen the semicircle boss of described upper jig body and the position residing for semicircle boss of described lower jig body clear, can start to test, now, move down described lower jig body, the change of the upper semicircle boss of jig body and the semicircle boss relative distance of described lower jig body described in described contactless Video Extensometer Real-time Collection simultaneously, until time the display screen display be connected with testing machine is without external force, test terminates, described contactless Video Extensometer collection completes, by the change of the semicircle boss relative distance of the semicircle boss and described lower jig body of measuring described upper jig body, indirectly can obtain the deformation extent of described ring-shaped sample, both simple and reliable, meet again the standard-required of test.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the inventive method; can also make some improvement and supplement, these improve and supplement and also should be considered as protection scope of the present invention.
Claims (10)
1. a ring-shaped sample stretching clamp, comprises jig body and lower jig body, it is characterized in that: described upper jig body and described lower jig body include:
Fixture, it is connected with testing machine;
Main joint portion, it is connected with described fixture;
Tensioning member, its one end is provided with the secondary joint portion cooperatively interacted with described main joint portion, and the other end is provided with the suspension part for hanging ring-shaped sample.
2. a kind of ring-shaped sample stretching clamp according to claim 1, is characterized in that: described suspension part is semicircle boss.
3. a kind of ring-shaped sample stretching clamp according to claim 2, it is characterized in that: described fixture comprises fixed part and U-shaped groove, described fixed part is in order to be fixedly connected with described testing machine.
4. a kind of ring-shaped sample stretching clamp according to claim 3, is characterized in that: described U-shaped groove two ends are respectively provided with a through hole, and described main joint portion is connected with described fixture through described through hole.
5. a kind of ring-shaped sample stretching clamp according to claim 4, is characterized in that: described U-shaped recess width is consistent with described tensioning member width.
6. a kind of ring-shaped sample stretching clamp according to claim 5, is characterized in that: when described main joint portion and described secondary joint portion in conjunction with time, there is space in described secondary joint portion and described U-shaped bottom portion of groove.
7. a kind of ring-shaped sample stretching clamp according to claim 6, is characterized in that: described main joint portion is pin.
8., according to the arbitrary described a kind of ring-shaped sample stretching clamp of claim 1-7, it is characterized in that: also comprise a backboard, described backboard is fixedly connected with the fixture dorsal part of described upper jig body.
9. a kind of ring-shaped sample stretching clamp according to claim 8, is characterized in that: described backboard is all close at the tensioning member of described upper jig body and the tensioning member back of described lower jig body.
10. a kind of ring-shaped sample stretching clamp according to claim 9, is characterized in that: described backboard is fixedly connected with described fixture dorsal part by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059477.6A CN105547819A (en) | 2016-01-28 | 2016-01-28 | Annular sample stretching fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059477.6A CN105547819A (en) | 2016-01-28 | 2016-01-28 | Annular sample stretching fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105547819A true CN105547819A (en) | 2016-05-04 |
Family
ID=55827161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610059477.6A Pending CN105547819A (en) | 2016-01-28 | 2016-01-28 | Annular sample stretching fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105547819A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084881A (en) * | 2017-06-16 | 2017-08-22 | 中国人民解放军第五七九工厂 | A kind of whole O-shaped rubber ring tension test extension at break measuring device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290052Y (en) * | 1997-03-03 | 1998-09-02 | 新汶矿务局职工大学 | Connecting device for ring test piece pulling test |
| CN2854563Y (en) * | 2005-12-27 | 2007-01-03 | 宝山钢铁股份有限公司 | Stretching test tool for metal stretching tester |
| CN201681020U (en) * | 2010-05-14 | 2010-12-22 | 苏州热工研究院有限公司 | Fixture for toroidal tensile test of thin pipe |
| CN102445384A (en) * | 2011-09-22 | 2012-05-09 | 西北工业大学 | Clamp for testing annular tensile property of tubular product |
| CN103512797A (en) * | 2012-06-30 | 2014-01-15 | 江苏明珠试验机械有限公司 | Circumferential tensile strength experimental clamp for glass fiber reinforced plastic conduit |
| CN204314141U (en) * | 2014-11-24 | 2015-05-06 | 江苏省沙钢钢铁研究院有限公司 | A kind of wire loop sample tensile strength test fixture |
| CN105181446A (en) * | 2015-08-27 | 2015-12-23 | 浙江鑫宙竹基复合材料科技有限公司 | Method for detecting initial circumferential tensile strength of bamboo composite pressure pipe |
| CN205333413U (en) * | 2016-01-28 | 2016-06-22 | 中国原子能科学研究院 | Tensile fixture of cyclic annular sample |
-
2016
- 2016-01-28 CN CN201610059477.6A patent/CN105547819A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290052Y (en) * | 1997-03-03 | 1998-09-02 | 新汶矿务局职工大学 | Connecting device for ring test piece pulling test |
| CN2854563Y (en) * | 2005-12-27 | 2007-01-03 | 宝山钢铁股份有限公司 | Stretching test tool for metal stretching tester |
| CN201681020U (en) * | 2010-05-14 | 2010-12-22 | 苏州热工研究院有限公司 | Fixture for toroidal tensile test of thin pipe |
| CN102445384A (en) * | 2011-09-22 | 2012-05-09 | 西北工业大学 | Clamp for testing annular tensile property of tubular product |
| CN103512797A (en) * | 2012-06-30 | 2014-01-15 | 江苏明珠试验机械有限公司 | Circumferential tensile strength experimental clamp for glass fiber reinforced plastic conduit |
| CN204314141U (en) * | 2014-11-24 | 2015-05-06 | 江苏省沙钢钢铁研究院有限公司 | A kind of wire loop sample tensile strength test fixture |
| CN105181446A (en) * | 2015-08-27 | 2015-12-23 | 浙江鑫宙竹基复合材料科技有限公司 | Method for detecting initial circumferential tensile strength of bamboo composite pressure pipe |
| CN205333413U (en) * | 2016-01-28 | 2016-06-22 | 中国原子能科学研究院 | Tensile fixture of cyclic annular sample |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084881A (en) * | 2017-06-16 | 2017-08-22 | 中国人民解放军第五七九工厂 | A kind of whole O-shaped rubber ring tension test extension at break measuring device and method |
| CN107084881B (en) * | 2017-06-16 | 2023-05-16 | 中国人民解放军第五七一九工厂 | Device and method for measuring elongation at break of whole O-shaped rubber ring in tensile test |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |