CN106468638B - Axial tensile test fixture for long cube test piece - Google Patents
Axial tensile test fixture for long cube test piece Download PDFInfo
- Publication number
- CN106468638B CN106468638B CN201610809325.3A CN201610809325A CN106468638B CN 106468638 B CN106468638 B CN 106468638B CN 201610809325 A CN201610809325 A CN 201610809325A CN 106468638 B CN106468638 B CN 106468638B
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- CN
- China
- Prior art keywords
- hinged
- test piece
- pull rods
- lever arms
- clamping plates
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- 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.)
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Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention belongs to the improvement of a long cube test piece test fixture structure, in particular to a long cube test piece axial tensile test fixture, wherein the outer end of each support arm of a cross support arm is respectively hinged with two symmetrical pull rods, the four sides of a square frame are respectively hinged with lever arms corresponding to the pull rods, the outer ends of the lever arms are respectively hinged with the other ends of the corresponding pull rods, the inner ends of the lever arms are hinged with clamping plates, inverted teeth are uniformly distributed on the working surface of the clamping plates, the working surface of the clamping plates is matched with a tested piece, and pull rings are arranged in the center of the top surface of the cross support arm. The invention has reasonable structure, safe and reliable performance, is suitable for test pieces with compressive strength more than 5 times of resistance strength materials, is easy to process the tested piece, and can be reused.
Description
Technical Field
The invention belongs to the improvement of a long cube test piece test clamp structure, and particularly relates to a long cube test piece axial tensile test clamp.
Background
At present, the axial tensile test of a test long cube test piece mainly comprises two types, when one type is a molded test piece, the test piece is provided with a constant cross section cube at the middle part, the two ends of the test piece are gradually increased in area of a rectangular cross section, so that the fracture is positioned at the constant cross section cube at the middle part under the action of axial tension, and the test piece is provided with the following components: concrete axial tensile test in hydraulic concrete test procedure SL 352-2006. The method has the defects that the test piece is only molded by a test mold, the test can be performed, and the processing of the test piece sampled on site is very difficult; and secondly, the two ends of the test piece are adhered to the clamp by adopting strong adhesive to carry out a test, such as an asphalt concrete tensile test in DL/T5362-2006 of hydraulic asphalt concrete test procedure. The method has the defects of long time, namely the gluing effect needs waiting time, and after the test is finished, the residual test piece in the clamping head bonded at the two ends of the test piece is difficult to take out, so that the repeated use of the clamping head is influenced.
Disclosure of Invention
The invention aims to provide the axial tensile test fixture for the long cube test piece, which is reasonable in structure, safe and reliable in performance, suitable for test pieces with compressive strength more than 5 times of resistant strength materials, easy to process the tested piece and reusable in clamping head.
The purpose of the invention is realized in the following way: the axial tensile test fixture for long cubic test piece includes two symmetrical pull rods hinged to the outer ends of the support arms, square frame with lever arms hinged to the opposite ends of the pull rods, clamping boards hinged to the inner ends of the lever arms, and pull rings in the center of the top of the support arms.
The principle of the invention is as follows: the tension is converted into the pressure to clamp the two ends of the test piece, and the pressure is gradually increased along with the increase of the tension in the test process, so that the purpose of tightly clamping the two ends of the test piece is ensured. The technical key points of the test fixture are as follows: firstly, a connecting rod is adopted for transmission, and the tensile force is converted into pressure to two ends of a test piece; secondly, in order to avoid stress concentration of the test piece at the edge of the clamping plate caused by pressure at two ends, the clamping plates are designed to be gradually thinned from outside to inside along the two ends of the test piece, and the pressure stress at the two ends of the test piece is also reduced from large to small, so that the stress concentration of the test piece at the edge of the clamping plate is reduced; thirdly, the clamping plates are designed by adopting inverted teeth, so that the requirement on clamping a test piece is met.
The application method of the invention comprises the following steps:
placing one end of a long cube test piece into the clamp, enabling the clamping plate to surround the test piece, slightly lifting the pull ring, enabling the pull rod to drive the lever upwards, and clamping the clamping plate around the upper end of the test piece;
placing the other end of the long cube test piece into another symmetrical clamp, enabling the clamping plate to surround the test piece, slightly lifting the pull ring, enabling the pull rod to downwards drive the lever, and enabling the clamping head to clamp the periphery of the lower end of the test piece;
through the steps, after the two groups of clamps clamp the test piece, the clamps and the test piece are placed on a universal testing machine together, and the two pull rings are respectively hooked, so that an axial tensile test can be performed.
The invention has reasonable structure, safe and reliable performance, is suitable for test pieces with compressive strength more than 5 times of resistance strength materials, is easy to process the tested piece, and can be reused.
Drawings
The present invention will be further described with reference to the accompanying drawings, wherein fig. 1 is a schematic front view of the present invention, fig. 2 is a schematic left view of the present invention, fig. 3 is a schematic top view of the present invention, and fig. 4 is a schematic use state of the present invention.
Detailed Description
As shown in figures 1, 2, 3 and 4, the outer end of each support arm of a cross support arm 1 is respectively hinged with two symmetrical pull rods 2, four sides of a rectangular frame 5 are respectively hinged with lever arms 4 corresponding to the pull rods 2, the outer ends of the lever arms 4 are respectively hinged with the other ends of the corresponding pull rods 2, the inner ends of the lever arms 4 are hinged with clamping plates 3, inverted teeth are uniformly distributed on the working surface of the clamping plates 3, the working surface of the clamping plates 3 is matched with a tested piece 7, and pull rings 6 are arranged in the center of the top surface of the cross support arm 1. Two hinging seats are respectively arranged at the outer end of each supporting arm of the cross-shaped supporting arm 1, and two symmetrical pull rods 2 are hinged through the hinging seats. The hinge surface of the clamping plate 3 is an inward contracted inclined surface, and the included angle between the inclined surface and the plumb line is 3-6 degrees.
Claims (1)
1. An axial tensile test fixture for a long cube test piece is characterized in that: two symmetrical pull rods (2) are hinged to the outer end of each support arm of the cross support arm (1), lever arms (4) corresponding to the pull rods (2) are hinged to the four edges of the square frame (5) respectively, the outer ends of the lever arms (4) are hinged to the other ends of the corresponding pull rods (2) respectively, clamping plates (3) are hinged to the inner ends of the lever arms (4), inverted teeth are uniformly distributed on the working surface of the clamping plates (3), the working surface of the clamping plates (3) is matched with a tested piece (7), and pull rings (6) are arranged in the center of the top surface of the cross support arm (1);
two hinging seats are respectively arranged at the outer end of each supporting arm of the cross-shaped supporting arm (1), and two symmetrical pull rods (2) are hinged through the hinging seats;
the hinged surface of the clamping plate (3) is an inclined surface which contracts inwards, and the included angle between the inclined surface and the plumb line is 3-6 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610809325.3A CN106468638B (en) | 2016-09-08 | 2016-09-08 | Axial tensile test fixture for long cube test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610809325.3A CN106468638B (en) | 2016-09-08 | 2016-09-08 | Axial tensile test fixture for long cube test piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106468638A CN106468638A (en) | 2017-03-01 |
| CN106468638B true CN106468638B (en) | 2023-08-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610809325.3A Active CN106468638B (en) | 2016-09-08 | 2016-09-08 | Axial tensile test fixture for long cube test piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106468638B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243670B (en) * | 2019-07-10 | 2022-02-11 | 中航飞机起落架有限责任公司 | Load conversion applying mechanism and test method thereof |
| CN112858052B (en) * | 2021-01-29 | 2022-05-03 | 北京工业大学 | Tensile fatigue test device for pulse fatigue compression testing machine |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042448A (en) * | 1979-03-02 | 1980-09-24 | Psb Foerderanlagen | Coupling device for towing conveyors |
| US5361640A (en) * | 1993-09-01 | 1994-11-08 | Carroll Norman L | Materials testing apparatus for reduced sample bending |
| KR200251218Y1 (en) * | 2001-07-20 | 2001-11-17 | (주)한성중공업 | Slag handling tongs assembly |
| DE10124064A1 (en) * | 2001-05-16 | 2002-11-28 | Gassmann Theiss Messtech | Tensile or compression testing apparatus has clamp heads for holding sample, provided with torque measuring devices |
| CN201065300Y (en) * | 2007-07-03 | 2008-05-28 | 沈阳铝镁设计研究院 | Charcoal block clamp |
| CN201532335U (en) * | 2009-09-28 | 2010-07-21 | 葛洲坝集团试验检测有限公司 | Jig for prism concrete test piece drawing test |
| CN202471504U (en) * | 2012-02-06 | 2012-10-03 | 新疆水利水电科学研究院 | Test rack for full-range static compressive elastic modulus of plastic concrete |
| KR20130010306A (en) * | 2011-07-18 | 2013-01-28 | 주식회사 포스코 | Clamp |
| CN203372992U (en) * | 2013-07-05 | 2014-01-01 | 衡水英利新能源有限公司 | Clamp for lifting large polycrystalline ingot casting crucible |
| CN103896150A (en) * | 2012-12-31 | 2014-07-02 | 天津信亨工程机械有限公司 | Tire turning rigging |
| TWI471560B (en) * | 2013-08-12 | 2015-02-01 | China Steel Corp | Shear stress testing device for flat plate |
| CN204556381U (en) * | 2015-04-20 | 2015-08-12 | 郑州大学 | Concrete compression failing stress-strain full curve proving installation |
| CN204964288U (en) * | 2015-08-10 | 2016-01-13 | 安徽农业大学经济技术学院 | Mechanics of materials testing machine |
| CN205981892U (en) * | 2016-09-08 | 2017-02-22 | 新疆水利水电科学研究院 | Long cube test piece axial tension test fixture |
-
2016
- 2016-09-08 CN CN201610809325.3A patent/CN106468638B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042448A (en) * | 1979-03-02 | 1980-09-24 | Psb Foerderanlagen | Coupling device for towing conveyors |
| US5361640A (en) * | 1993-09-01 | 1994-11-08 | Carroll Norman L | Materials testing apparatus for reduced sample bending |
| DE10124064A1 (en) * | 2001-05-16 | 2002-11-28 | Gassmann Theiss Messtech | Tensile or compression testing apparatus has clamp heads for holding sample, provided with torque measuring devices |
| KR200251218Y1 (en) * | 2001-07-20 | 2001-11-17 | (주)한성중공업 | Slag handling tongs assembly |
| CN201065300Y (en) * | 2007-07-03 | 2008-05-28 | 沈阳铝镁设计研究院 | Charcoal block clamp |
| CN201532335U (en) * | 2009-09-28 | 2010-07-21 | 葛洲坝集团试验检测有限公司 | Jig for prism concrete test piece drawing test |
| KR20130010306A (en) * | 2011-07-18 | 2013-01-28 | 주식회사 포스코 | Clamp |
| CN202471504U (en) * | 2012-02-06 | 2012-10-03 | 新疆水利水电科学研究院 | Test rack for full-range static compressive elastic modulus of plastic concrete |
| CN103896150A (en) * | 2012-12-31 | 2014-07-02 | 天津信亨工程机械有限公司 | Tire turning rigging |
| CN203372992U (en) * | 2013-07-05 | 2014-01-01 | 衡水英利新能源有限公司 | Clamp for lifting large polycrystalline ingot casting crucible |
| TWI471560B (en) * | 2013-08-12 | 2015-02-01 | China Steel Corp | Shear stress testing device for flat plate |
| CN204556381U (en) * | 2015-04-20 | 2015-08-12 | 郑州大学 | Concrete compression failing stress-strain full curve proving installation |
| CN204964288U (en) * | 2015-08-10 | 2016-01-13 | 安徽农业大学经济技术学院 | Mechanics of materials testing machine |
| CN205981892U (en) * | 2016-09-08 | 2017-02-22 | 新疆水利水电科学研究院 | Long cube test piece axial tension test fixture |
Non-Patent Citations (1)
| Title |
|---|
| 杨凤华 等.《建筑施工技术》.中国计划出版社,2007,(第1版),第217-223页. * |
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| Publication number | Publication date |
|---|---|
| CN106468638A (en) | 2017-03-01 |
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