CN104390853A - Tensile test fixture and assembly - Google Patents
Tensile test fixture and assembly Download PDFInfo
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- CN104390853A CN104390853A CN201410746994.1A CN201410746994A CN104390853A CN 104390853 A CN104390853 A CN 104390853A CN 201410746994 A CN201410746994 A CN 201410746994A CN 104390853 A CN104390853 A CN 104390853A
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- tensile test
- fiber reinforced
- anchor pole
- semicylinders
- test fixture
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Abstract
The invention discloses a tensile test fixture and an assembly. The tensile test fixture is used for clamping a fixed fiber reinforced bar anchoring rod to carry out a tensile test, and the outer surface of the fiber reinforced bar anchoring rod is provided with outer threads which extend in a spiral manner. The tensile test fixture comprises two half cylinders respectively with a semicircular cross section and a binding ribbon. The inner side of each half cylinder is provided with inner threads, and the outer side of each half cylinder is provided with a semicircular groove. The two half cylinders are symmetrically combined together to be in a cylindrical shape, the fiber reinforced bar anchoring rod is bonded into the cylinder, and the corresponding grooves are combined to be in an annular shape. The binding ribbon is wound in the two grooves of the two half cylinders, so that the two half cylinders are bonded to the fiber reinforced bar anchoring rod, and the inner threads are matched with the outer threads in a threading manner. By adopting the tensile test fixture, not only can the concentricity of the fiber reinforced bar anchoring rod and the fixture be guaranteed, but also the tensile test accuracy can be improved, and the fixture also can be reutilized. The invention also discloses an assembly comprising two tensile test fixtures.
Description
Technical field
The present invention relates to a kind of fixture, particularly a kind of fiber reinforced rebar anchor pole tensile test tensile test fixture and there is the assembly of described tensile test fixture.
Background technology
Tensile strength judges one of fiber reinforced rebar anchor pole performance quality large critical index, and the outside surface of fiber reinforced rebar anchor pole is the external thread helically extended.The tensile test of fiber reinforced rebar anchor pole adopts tensile test instrument to carry out, and fiber reinforced rebar anchor pole, when fixing, is not directly fixed on tensile test instrument, but is indirectly fixed on tensile test instrument by fixture.Traditional indirect fixed form is the two ends being enclosed within fiber reinforced rebar anchor pole with two steel pipes respectively, then toward injecting glue in steel pipe, after the glue solidifies, the two ends of fiber reinforced rebar anchor pole are just fixed on the steel pipe at two ends firmly, and the equipment then two steel pipes being arranged on respectively tensile test carries out tensile test.
The tensile test fixture of existing use has following shortcoming:
1, because fiber reinforced rebar anchor pole is enclosed within steel pipe, and the diameter of fiber reinforced rebar anchor pole is slightly smaller than the diameter of steel pipe, so can not ensure the right alignment of fiber reinforced rebar anchor pole and steel pipe, affects tensile test result;
2, the glue in steel pipe cannot be removed, and causes steel pipe not reuse, and the steel pipe connecting doing tensile test all must discard with fiber reinforced rebar anchor pole, causes the waste of cost;
3, after injecting glue, glue is not easy to parch, and the glue solidifies for needs etc., immediately can not carry out tensile test, generally needs aptitude tests in second day by the time, affects test efficiency.
Summary of the invention
For the deficiency of existing scheme, the present invention proposes a kind of tensile test fixture, not only can ensure that fiber reinforced rebar anchor pole is coaxial with steel pipe, improve the accuracy of tension test, and fixture can also reuse.
The present invention realizes like this, a kind of tensile test fixture, it carries out tensile test for gripping fiber reinforced rebar anchor pole, the outside surface of described fiber reinforced rebar anchor pole is the external thread helically extended, and described tensile test fixture comprises two semicylinders, at least one bundling belt that xsect is semi-circular shape; The inner side of described two semicylinders is provided with internal thread, and the outside of described two semicylinders all offers at least one groove semiorbicular; Described two semicylinder symmetries are combined in entirety cylindrically and by described fiber reinforced rebar anchor pole is bundled in, and corresponding recesses is combined ringwise, make described two semicylinders be bundled on described fiber reinforced rebar anchor pole in the corresponding recesses that described at least one bundling belt is wrapped in described two semicylinders, and described internal thread and described external thread are screwed.
As the further improvement of such scheme, the outside of described two semicylinders is also provided with some anti-slip veins.
As the further improvement of such scheme, described bundling belt is iron wire.
As the further improvement of such scheme, the quantity of described groove is two, and two grooves are opened in the two ends, outside of described two semicylinders, and the quantity of the bundling belt corresponding with described groove is at least two.
The present invention also provides a kind of tensile test clamp assembly, it comprises for two the tensile test fixtures of fastening clamp at fiber reinforced rebar anchor pole two ends, the outside surface of described fiber reinforced rebar anchor pole is the external thread helically extended, and described tensile test fixture comprises two semicylinders, at least one bundling belt that xsect is semi-circular shape; The inner side of described two semicylinders is provided with internal thread, and the outside of described two semicylinders all offers at least one groove semiorbicular; Described two semicylinder symmetries are combined in entirety cylindrically and by described fiber reinforced rebar anchor pole is bundled in, and corresponding recesses is combined ringwise, make described two semicylinders be bundled on described fiber reinforced rebar anchor in the corresponding recesses that described at least one bundling belt is wrapped in described two semicylinders, and described internal thread and described external thread are screwed.
As the further improvement of such scheme, the outside of described two semicylinders is also provided with some anti-slip veins.
As the further improvement of such scheme, described bundling belt is iron wire.
As the further improvement of such scheme, the quantity of described groove is two, and two grooves are opened in the two ends, outside of described two semicylinders, and the quantity of the bundling belt corresponding with described groove is at least two.
Two semicylinders are bundled on fiber reinforced rebar anchor pole by bundling belt by the present invention, because the internal thread in two semicylinders mates with the external thread spiro fastening of fiber reinforced rebar anchor pole, thus fiber reinforced rebar anchor pole and tensile test fixture can be ensured greatly on the same axis, and then the fiber reinforced rebar anchor pole in tensile test can not depart from center of effort's line, improve the accuracy of tensile test; In addition, adopt the thread fiting mode with fiber reinforced rebar anchor pole, tensile test fixture can freely load and unload, recycling, improves the utilization rate of tensile test fixture, and does not need to bond with glue, without the need to the stand-by period, reduce the loss of fiber reinforced rebar anchor pole and tensile test fixture.
Accompanying drawing explanation
The application schematic diagram of the tensile test fixture that Fig. 1 provides for first embodiment of the invention.
Fig. 2 is the structural representation of tensile test fixture in Fig. 1.
The application schematic diagram of the tensile test fixture that Fig. 3 provides for second embodiment of the invention.
Fig. 4 is the structural representation of tensile test fixture in Fig. 3.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
First embodiment
Refer to Fig. 1 and Fig. 2, tensile test clamp assembly, for fiber reinforced rebar anchor pole 2 is fixed on tensile test instrument (not shown) indirectly, facilitates tensile test instrument to carry out tensile test to fiber reinforced rebar anchor pole 2.Tensile test instrument is as tensilon.The outside surface of fiber reinforced rebar anchor pole 2 is the external thread 21 helically extended.
Tensile test clamp assembly comprises two identical tensile test fixtures of structure.Two tensile test fixtures are bundled in the two ends of fiber reinforced rebar anchor pole 2 respectively, are indirectly fixed on tensile test instrument by fiber reinforced rebar anchor pole 2 by two tensile test fixtures.If fiber reinforced rebar anchor pole 2 is directly fixed on tensile test instrument, can, because stress surface is smaller, cause, when the pulling force of tensile test instrument becomes very large, being easy to be caught broken.Adopt two tensile test fixtures to be indirectly fixed on tensile test instrument by fiber reinforced rebar anchor pole 2, the stress surface of muscle anchor pole 2 can be strengthened by increased fiber, place fiber reinforced rebar anchor pole 2 and press from both sides bad and cannot test.
Described tensile test fixture comprises two semicylinders 1, at least one bundling belt 3 that xsect is semi-circular shape.The inner side of two semicylinders 1 is provided with internal thread 11, and the outside that the outside of two semicylinders 1 all offers in a semiorbicular groove 12, two semicylinders 1 also can be provided with some anti-slip veins 13.
Two semicylinder 1 symmetries are combined in entirety cylindrically and by fiber reinforced rebar anchor pole 2 is bundled in, and two grooves 12 are in circular.Make two semicylinders 1 be bundled on fiber reinforced rebar anchor pole 2 in the groove 12 that bundling belt 3 is wrapped in two semicylinders 1, and internal thread 11 and external thread 21 are screwed.In the present embodiment, the quantity of groove 12 is illustrated for one, at this moment the quantity at least one of bundling belt 3, as long as certainly can two semicylinders 1 be bundled on fiber reinforced rebar anchor pole 2, the quantity of groove 12, the quantity of bundling belt 3 all can also be more, and the quantity be not limited in present embodiment limits.Bundling belt 3 can be thin wire, and can be bundled on fiber reinforced rebar anchor pole 2 by two semicylinders 1 as long as be appreciated that, bundling belt 3 is not limited to the form of thin wire.
Two semicylinders 1 are bundled on fiber reinforced rebar anchor pole 2 by bundling belt 3 by the present invention, mate because the internal thread 11 in two semicylinders 1 screws togather with the external thread 21 of fiber reinforced rebar anchor pole 2, thus fiber reinforced rebar anchor pole 2 and tensile test fixture can be ensured greatly on the same axis, and then the fiber reinforced rebar anchor pole in tensile test can not depart from center of effort's line, improve the accuracy of tensile test; In addition, adopt the thread fiting mode with fiber reinforced rebar anchor pole 2, tensile test fixture can freely load and unload, recycling, improves the utilization rate of tensile test fixture, and does not need to bond with glue, without the need to the stand-by period, reduce the loss of fiber reinforced rebar anchor pole 2 and tensile test fixture.
Second embodiment
Refer to Fig. 3 and Fig. 4, tensile test clamp assembly, for fiber reinforced rebar anchor pole 2 is fixed on tensile test instrument (not shown) indirectly, facilitates tensile test instrument to carry out tensile test to fiber reinforced rebar anchor pole 2.The outside surface of fiber reinforced rebar anchor pole 2 is the external thread 21 helically extended.
Tensile test clamp assembly comprises two identical tensile test fixtures of structure.Two tensile test fixtures are bundled in the two ends of fiber reinforced rebar anchor pole 2 respectively, are indirectly fixed on tensile test instrument by fiber reinforced rebar anchor pole 2 by two tensile test fixtures.If fiber reinforced rebar anchor pole 2 is directly fixed on tensile test instrument, can, because stress surface is smaller, cause, when the pulling force of tensile test instrument becomes very large, being easy to be caught broken.Adopt two tensile test fixtures to be indirectly fixed on tensile test instrument by fiber reinforced rebar anchor pole 2, the stress surface of muscle anchor pole 2 can be strengthened by increased fiber, place fiber reinforced rebar anchor pole 2 and press from both sides bad and cannot test.
Described tensile test fixture comprises two semicylinders, 10, at least two bundling belts (sign) that xsect is semi-circular shape.The inner side of two semicylinders 10 is provided with internal thread 11, and the outside that the two ends, outside of two semicylinders 10 all offer in semiorbicular two grooves 12, two semicylinders 10 also can be provided with some anti-slip veins 13.
Two semicylinder 10 symmetries are combined in entirety cylindrically and by fiber reinforced rebar anchor pole 2 is bundled in, and two grooves 12 are in circular.Make two semicylinders 10 be bundled on fiber reinforced rebar anchor pole 2 in two grooves 12 that described at least two bundling belts are wrapped in two semicylinders 10, and internal thread 11 and external thread 21 are screwed.In the present embodiment, the quantity of groove 12 is illustrated for two, at this moment the quantity at least two of bundling belt, as long as certainly can two semicylinders 10 be bundled on fiber reinforced rebar anchor pole 2, the quantity of groove 12, the quantity of bundling belt all can also be more, and the quantity be not limited in present embodiment limits.Described bundling belt can be thin wire, and can be bundled on fiber reinforced rebar anchor pole 2 by two semicylinders 10 as long as be appreciated that, described bundling belt is not limited to the form of thin wire.
Two semicylinders 10 are bundled on fiber reinforced rebar anchor pole 2 by bundling belt by the present invention, mate because the internal thread 11 in two semicylinders 10 screws togather with the external thread 21 of fiber reinforced rebar anchor pole 2, thus fiber reinforced rebar anchor pole 2 and tensile test fixture can be ensured greatly on the same axis, and then the fiber reinforced rebar anchor pole in tensile test can not depart from center of effort's line, improve the accuracy of tensile test; In addition, adopt the thread fiting mode with fiber reinforced rebar anchor pole 2, tensile test fixture can freely load and unload, recycling, improves the utilization rate of tensile test fixture, and does not need to bond with glue, without the need to the stand-by period, reduce the loss of fiber reinforced rebar anchor pole 2 and tensile test fixture.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a tensile test fixture, it carries out tensile test for gripping fiber reinforced rebar anchor pole, the outside surface of described fiber reinforced rebar anchor pole is the external thread helically extended, and it is characterized in that: described tensile test fixture comprises two semicylinders, at least one bundling belt that xsect is semi-circular shape; The inner side of described two semicylinders is provided with internal thread, and the outside of described two semicylinders all offers at least one groove semiorbicular; Described two semicylinder symmetries are combined in entirety cylindrically and by described fiber reinforced rebar anchor pole is bundled in, and corresponding recesses is combined ringwise; Make described two semicylinders be bundled on described fiber reinforced rebar anchor pole in the corresponding recesses that described at least one bundling belt is wrapped in described two semicylinders, and described internal thread and described external thread are screwed.
2. tensile test fixture as claimed in claim 1, is characterized in that: the outside of described two semicylinders is also provided with some anti-slip veins.
3. tensile test fixture as claimed in claim 1, is characterized in that: described bundling belt is iron wire.
4. tensile test fixture as claimed in claim 1, is characterized in that: the quantity of described groove is two, and two grooves are opened in the two ends, outside of described two semicylinders, and the quantity of the bundling belt corresponding with described groove is at least two.
5. a tensile test clamp assembly, it comprises for two the tensile test fixtures of fastening clamp at fiber reinforced rebar anchor pole two ends, it is characterized in that: described two tensile test fixtures are as the tensile test fixture in Claims 1-4 as described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410746994.1A CN104390853A (en) | 2014-09-30 | 2014-12-09 | Tensile test fixture and assembly |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410519857.4A CN104237006A (en) | 2014-09-30 | 2014-09-30 | Clamp for tension test of glass reinforcement |
| CN2014105198574 | 2014-09-30 | ||
| CN201410746994.1A CN104390853A (en) | 2014-09-30 | 2014-12-09 | Tensile test fixture and assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104390853A true CN104390853A (en) | 2015-03-04 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410519857.4A Pending CN104237006A (en) | 2014-09-30 | 2014-09-30 | Clamp for tension test of glass reinforcement |
| CN201410746994.1A Pending CN104390853A (en) | 2014-09-30 | 2014-12-09 | Tensile test fixture and assembly |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410519857.4A Pending CN104237006A (en) | 2014-09-30 | 2014-09-30 | Clamp for tension test of glass reinforcement |
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| Country | Link |
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| CN (2) | CN104237006A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500515A (en) * | 2018-11-26 | 2019-03-22 | 常州市知豆信息科技有限公司 | A kind of interior winding coil pipe detection installation equipment with tensile tester |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668779B (en) * | 2019-02-16 | 2021-07-16 | 北京工业大学 | Clamp device for measuring mechanical property of fastening belt flat plate sample by tensile test method |
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| CN1544798A (en) * | 2003-11-11 | 2004-11-10 | 吴德兴 | Shell expansion type rock bolt |
| CN201344881Y (en) * | 2008-12-16 | 2009-11-11 | 葛洲坝集团试验检测有限公司 | Primary-secondary steel stranded wire tensile testing fixture |
| CN201697836U (en) * | 2010-05-27 | 2011-01-05 | 浙江健力股份有限公司 | Auxiliary fixture for standard round bar sample tensile test |
| CN202210054U (en) * | 2011-09-28 | 2012-05-02 | 浙江省建筑科学设计研究院有限公司 | Bonding and anchoring device used for fiber rib tests |
| CN202433247U (en) * | 2011-12-26 | 2012-09-12 | 珠海市三思泰捷电气设备有限公司 | High-temperature specimen tensile-connection device matched with electronic universal testing machine |
| CN203299053U (en) * | 2013-05-13 | 2013-11-20 | 河北钢铁股份有限公司 | Tabular sample clamp for high-temperature tensile test machine |
| KR20140128853A (en) * | 2013-04-29 | 2014-11-06 | (주)센구조연구소 | Coupler for rebar |
| CN204255760U (en) * | 2014-09-30 | 2015-04-08 | 淮北宇鑫新型材料有限公司 | A kind of tensile test fixture and assembly |
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2014
- 2014-09-30 CN CN201410519857.4A patent/CN104237006A/en active Pending
- 2014-12-09 CN CN201410746994.1A patent/CN104390853A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544798A (en) * | 2003-11-11 | 2004-11-10 | 吴德兴 | Shell expansion type rock bolt |
| CN201344881Y (en) * | 2008-12-16 | 2009-11-11 | 葛洲坝集团试验检测有限公司 | Primary-secondary steel stranded wire tensile testing fixture |
| CN201697836U (en) * | 2010-05-27 | 2011-01-05 | 浙江健力股份有限公司 | Auxiliary fixture for standard round bar sample tensile test |
| CN202210054U (en) * | 2011-09-28 | 2012-05-02 | 浙江省建筑科学设计研究院有限公司 | Bonding and anchoring device used for fiber rib tests |
| CN202433247U (en) * | 2011-12-26 | 2012-09-12 | 珠海市三思泰捷电气设备有限公司 | High-temperature specimen tensile-connection device matched with electronic universal testing machine |
| KR20140128853A (en) * | 2013-04-29 | 2014-11-06 | (주)센구조연구소 | Coupler for rebar |
| CN203299053U (en) * | 2013-05-13 | 2013-11-20 | 河北钢铁股份有限公司 | Tabular sample clamp for high-temperature tensile test machine |
| CN204255760U (en) * | 2014-09-30 | 2015-04-08 | 淮北宇鑫新型材料有限公司 | A kind of tensile test fixture and assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500515A (en) * | 2018-11-26 | 2019-03-22 | 常州市知豆信息科技有限公司 | A kind of interior winding coil pipe detection installation equipment with tensile tester |
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| Publication number | Publication date |
|---|---|
| CN104237006A (en) | 2014-12-24 |
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Application publication date: 20150304 |