CN201532335U - Jig for prism concrete test piece drawing test - Google Patents
Jig for prism concrete test piece drawing test Download PDFInfo
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- CN201532335U CN201532335U CN2009202285147U CN200920228514U CN201532335U CN 201532335 U CN201532335 U CN 201532335U CN 2009202285147 U CN2009202285147 U CN 2009202285147U CN 200920228514 U CN200920228514 U CN 200920228514U CN 201532335 U CN201532335 U CN 201532335U
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- supporting
- test piece
- jig
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Abstract
A jig for a prism concrete test piece drawing test, comprises a clamping rod and a side plate, the side plate is a metallic plate in a shape approximate to an isosceles triangle, three holes are arranged at the positions adjacent to three corners, a bale handle and two supporting rollers are respectively disposed into the holes of the side plate, the supporting plate is a clapboard with one wide end and one narrow end, and the clamping rod is connected with a screw hole at the central section of the bale handle by an end screw thread. The utility model adopts the way that the supporting roller and the supporting plate transmits the force to the test piece, the bearing distribution of the end of the test piece can be improved by determining the suitable supporting roller position, while the circular arc line contact of the supporting roller with the supporting plate can improve the unreasonable stress due to the deviation of the test piece and jig size and the deviation of the mounting position, thereby reducing the unfavorable influence of the jig to the test result and improving the test precision.
Description
Technical field
The utility model is used for the clamping of concrete stretching test to the prism concrete sample.Similar test such as concrete axial tensile strength and limit stretch value test etc.By these anchor clamps, the tensile force from testing machine can be passed to test specimen.
Background technology
In concrete stretches test, have to the mode of test specimen power transmission multiple, such as epoxy bond method, embedded bar method, big Eight characters modulus method etc.These methods all have certain drawback: the epoxy bond method need be melted epoxy resin, and is harmful, contaminated environment; The embedded bar method, embedded bar is subjected to disturbance and off-centre easily when specimen molding, also wants broken test specimen to take out reinforcing bar afterwards; Big Eight characters modulus method need be processed the splayed configuration die trial, the cost height, and test specimen is heavy, and excentricity is big during test.
Summary of the invention
The purpose of utility model provides a kind of clamping device that is used for the tension test of prism concrete sample, utilizes this device to transmit pulling force to test specimen, implements concrete stretching test operation.This device can overcome the deficiency that existing mode of transfer force exists, and it is stressed to reach self-poise test specimen both sides, reduces excentricity, improves testing precision, reduces experimentation cost, alleviates and the purpose of the personnel's that simplify the operation work.
The purpose of this utility model is achieved in that a kind of anchor clamps that are used for the tension test of prism concrete sample, comprises supporting rod and side plate, and side plate is the sheet metal of a contour approximation isosceles triangle, and the position at close three angles is provided with three perforates; Bale handle and two carrying rollers place the perforate on the side plate respectively, and supporting plate is that an end is wide, the clapboard that an end is narrow, and supporting rod is connected by the screw of end thread with the bale handle middle part.
Bale handle and two carrying rollers are parallel to each other, and distribution triangular in shape is perpendicular to the side plate that is positioned at its two ends.
Be distributed with parallel groove on the supporting plate.
The anchor clamps that are used for the tension test of prism concrete sample that the utility model provides, adopt carrying roller and supporting plate mode to the test specimen power transmission, can be by determining suitable carrying roller position, improve the stressed distribution of test piece end, and the contact of the circular arc line between carrying roller and the supporting plate, then can improve owing to the deviation of the deviation of test specimen, grip size and installation site bring stressed unreasonable, thereby reduce the adverse effect of anchor clamps to test findings, improve test accuracy.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model is mainly by supporting rod 1, bale handle 2, and side plate 3, supporting plate 4 and carrying roller 5 are formed.Supporting rod 1 is a cylindrical rod member, and an end has screw thread; Bale handle 2 is that cylindrical rod member two ends have screw thread, and there is a screw at the middle part; Side plate 3 is the sheet metal of a contour approximation isosceles triangle, and the position at close three angles is provided with three holes; Supporting plate 4 is that an end is wide, the wedge metal plate that one end is narrow, an one big face is vertical with the upper/lower terminal face, be covered with parallel groove 6, this face contacts with test specimen, and groove can increase the friction force between supporting plate and test specimen, another big and upper and lower end face out of plumb, certain gradient is arranged, and process recessed arc-shaped slot; Carrying roller is the rod of a stage casing likeness in form spindle, and the profile of spindle and the circular groove of supporting plate coincide, and there is screw thread at two ends.
Supporting rod 1 is connected by the screw of end thread with bale handle 2 middle parts; A bale handle 2 and two carrying rollers 5 are parallel to each other, distribution triangular in shape, all perpendicular to two side 3 plates that are positioned at its two ends, the end of bale handle 2, carrying roller 5 is corresponding respectively to be penetrated in the hole at drift angle on the two isosceles triangle side plates and base angle, link to each other with side plate 3, form a stable framework, bale handle 3 after the connection and carrying roller 5 can both rotate around self longitudinal axis appropriateness; The concave surface of two supporting plates 4 leans against respectively on the spindle stage casing of both sides carrying roller, tooth of synchronous belt towards interior, wide end is towards supporting rod 2.
Principle of work of the present utility model is as follows: two of these anchor clamps are a cover, are clamped in the two ends of test specimen respectively.During use, take out test specimen 7, remove the fifth wheel on test specimen 7 corner angle and surface, wipe the moisture on test specimen 7 surfaces.Clamp the supporting rod 1 of anchor clamps with the jaw of testing machine, anchor clamps are fixed on the testing machine.Then, test specimen 7 upper ends are inserted between upper clamp two supporting plates 4 framework, two supporting plates, 4 symmetries are filled in the gap between carrying roller 5 and the test specimen 7 again, test specimen 7, supporting plate 4 and carrying roller 5 are closely contacted, test specimen 7 promptly is fixed on upper clamp and has suffered.Use the same method, the lower end of test specimen 7 is clipped in the lower clamp.Because the supporting plate 4 of action of gravity lower clamp need have external force to keep it closely to contact with carrying roller 5 with test specimen 7 before applying pulling force.Afterwards, start testing machine and apply less pretension, test specimen 7 promptly is clamped in the anchor clamps.
Claims (3)
1. anchor clamps that are used for the tension test of prism concrete sample comprise supporting rod (1) and side plate (3), and it is characterized in that: side plate (3) is the sheet metal of a contour approximation isosceles triangle, and the position at close three angles is provided with three perforates; Bale handle (2) and two carrying rollers (5) place the perforate on the side plate (3) respectively, and supporting plate (4) is that an end is wide, the clapboard that an end is narrow, and supporting rod (1) is connected by the screw of end thread with bale handle (2) middle part.
2. the anchor clamps that are used for the tension test of prism concrete sample according to claim 1 is characterized in that: bale handle (2) and two carrying rollers (5) are parallel to each other, and distribution triangular in shape is perpendicular to the side plate that is positioned at its two ends (3).
3. the anchor clamps that are used for the tension test of prism concrete sample according to claim 1 is characterized in that: be distributed with parallel groove (6) on the supporting plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202285147U CN201532335U (en) | 2009-09-28 | 2009-09-28 | Jig for prism concrete test piece drawing test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202285147U CN201532335U (en) | 2009-09-28 | 2009-09-28 | Jig for prism concrete test piece drawing test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201532335U true CN201532335U (en) | 2010-07-21 |
Family
ID=42527738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202285147U Expired - Fee Related CN201532335U (en) | 2009-09-28 | 2009-09-28 | Jig for prism concrete test piece drawing test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201532335U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353585A (en) * | 2011-06-20 | 2012-02-15 | 常州大学 | Quick clamp for tensile test of PET (polyethylene glycol terephthalate) cotton packing belt |
| CN104677731A (en) * | 2015-02-10 | 2015-06-03 | 西安建筑科技大学 | Spiral hoop type clamp for bamboo tension tests and using method thereof |
| CN104677730A (en) * | 2015-02-10 | 2015-06-03 | 西安建筑科技大学 | Radiation triplet clamp for bamboo tension tests and using method of radiation triplet clamp |
| CN106468638A (en) * | 2016-09-08 | 2017-03-01 | 新疆水利水电科学研究院 | Long cube specimen axial tension test fixture |
| CN113252444A (en) * | 2021-05-16 | 2021-08-13 | 湖南中环高新材料技术有限公司 | Building new material detection device |
| CN114088514A (en) * | 2021-11-22 | 2022-02-25 | 中铁十七局集团第一工程有限公司 | Clamp for concrete axial tensile test |
-
2009
- 2009-09-28 CN CN2009202285147U patent/CN201532335U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353585A (en) * | 2011-06-20 | 2012-02-15 | 常州大学 | Quick clamp for tensile test of PET (polyethylene glycol terephthalate) cotton packing belt |
| CN104677731A (en) * | 2015-02-10 | 2015-06-03 | 西安建筑科技大学 | Spiral hoop type clamp for bamboo tension tests and using method thereof |
| CN104677730A (en) * | 2015-02-10 | 2015-06-03 | 西安建筑科技大学 | Radiation triplet clamp for bamboo tension tests and using method of radiation triplet clamp |
| CN104677730B (en) * | 2015-02-10 | 2018-02-16 | 西安建筑科技大学 | A kind of radiation tri-coupling type fixture and its application method for the experiment of bamboo wood draftability |
| CN106468638A (en) * | 2016-09-08 | 2017-03-01 | 新疆水利水电科学研究院 | Long cube specimen axial tension test fixture |
| CN106468638B (en) * | 2016-09-08 | 2023-08-15 | 新疆水利水电科学研究院 | Axial tensile test fixture for long cube test piece |
| CN113252444A (en) * | 2021-05-16 | 2021-08-13 | 湖南中环高新材料技术有限公司 | Building new material detection device |
| CN113252444B (en) * | 2021-05-16 | 2024-02-06 | 湖南中环高新材料技术有限公司 | New building material detection device |
| CN114088514A (en) * | 2021-11-22 | 2022-02-25 | 中铁十七局集团第一工程有限公司 | Clamp for concrete axial tensile test |
| CN114088514B (en) * | 2021-11-22 | 2023-12-29 | 中铁十七局集团第一工程有限公司 | Clamp for concrete axial tensile test |
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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: 20100721 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |