CN103149092B - Drawing device split by multifunctional concrete test specimen - Google Patents
Drawing device split by multifunctional concrete test specimen Download PDFInfo
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- CN103149092B CN103149092B CN201310059541.7A CN201310059541A CN103149092B CN 103149092 B CN103149092 B CN 103149092B CN 201310059541 A CN201310059541 A CN 201310059541A CN 103149092 B CN103149092 B CN 103149092B
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Abstract
Drawing device split by a kind of multifunctional concrete test specimen, comprise framework, lower platen is provided with below framework, be provided with above framework can be vertically movable top board, the lower surface of top board is provided with top board face, the upper surface of lower platen is provided with lower platen face, top board face (and lower platen face becomes linear contact lay with the test specimen between described top board face and lower platen face; Also relatively be provided with in described framework slidably for clamping the shifting board of test specimen.The present invention is by arranging movable top board, and go for the test specimen of multiple different size, the shifting board of setting can fix test specimen easily, coordinates scale, can realize centering easily.The present invention can carry out accurate centering to the concrete sample of sizes and split and draw, and package unit structure is simple, small volume, can move freely, and can repeatedly use, Loading Control is convenient, flexible, data measured more tallies with the actual situation, and meets wedge interfere regulatory requirements.
Description
Technical field
The present invention relates to the test unit field of mechanical performance of concrete, particularly drawing device split by a kind of multifunctional concrete test specimen.
Background technology
Tensile strength is the important mechanics parameter of concrete one.At present, measure concrete tensile strength test method has axial tension method, beams of concrete bends test method(s) and wedge interfere method.Prove according to related data, the intensity measured by axial tension method tallies with the actual situation most, but this method exists the difficulty of centering; And the intensity that beams of concrete bends measured by test method(s) is often higher than actual strength a lot, therefore at home and abroad many employing cubes or right cylinder diametral compression test measure concrete tensile strength.Cube or right cylinder apply a pressure line load, and such test specimen intermediate vertical interface, except adding scope very little near force, is uniformly distributed horizontal tension.When tension reaches concrete tensile strength, test specimen is split into two halves.But the concentration line load on test specimen is difficult to apply, and centering is also more difficult, is unfavorable for studying concrete tensile strength.
Chinese patent: 201020619738.3 disclose a kind of concrete splitting tensile test auxiliary device, by being provided with the baffle plate of " L " shape at pressing plate diagonal angle, pressing plate center line is provided with filler strip.Adopt and the filler strip met design requirement and pressing plate are carried out integrated design, and on pressing plate, be fixed with baffle plate for locating test specimen, eliminate line on test specimen during test and determine the step of splitting-position, face, eliminate the error of human factor during line, improve test efficiency.Because of upper and lower pressing plate adopt absolute construction, between connectionless structure, so little compared with existing cube wedge interfere device volume, quality is light.Problems existing is, this device can only be applicable to the test specimen of fixed measure, and then need the pressing plate making sizes when relating to the test specimen of plurality of specifications size, experimental cost is higher, also inconvenient.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of multifunctional concrete test specimen and splits drawing device, can be applicable to the test specimen of multiple different size easily, improves the work efficiency of test and the accuracy of test result.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: drawing device split by a kind of multifunctional concrete test specimen, comprise framework, it is characterized in that: below framework, be provided with lower platen, be provided with above framework can be vertically movable top board, the lower surface of top board is provided with top board face, and the upper surface of lower platen is provided with lower platen face, and top board face and lower platen face become linear contact lay with the test specimen between described top board face and lower platen face;
In described framework, by many connecting links with is connected guide rod connection between side plate, shifting board and connecting link be connected guide rod and be slidably matched, side plate lower end is fixedly connected with substrate, and lower platen is connected with substrate;
Side plate upper end is provided with chute, and the top board termination of chute and top board is slidably matched; Also relatively be provided with slidably for clamping the shifting board of test specimen in described framework;
Shifting board is also provided with the bolt connecting hole for being connected with threaded rod bearing, the threaded hole on threaded rod and side plate forms threaded engagement, formed between threaded rod and shifting board rotatable and mutually between can not the threadingly connected mode that moves axially of bar.
Described top board face and the xsect camber in lower platen face, V-arrangement or U-shaped.
Described lower platen two ends are provided with lower platen termination, and lower platen termination is formed with the notch of side plate lower end and coordinates.
Shifting board is provided with multiple sliding eye for being slidably matched with connecting link, and shifting board lower end has the shifting board notch of avoiding interfering with lower platen face.
Described top board termination is provided with two and forms with chute the sidewall be slidably matched.
Along length or/and Width is provided with the scale for centering on described framework.
Drawing device split by a kind of multifunctional concrete test specimen provided by the invention, and by arranging movable top board, go for the test specimen of multiple different size, the shifting board of setting can fix test specimen easily, coordinates scale, can realize centering easily.The present invention can carry out accurate centering to the concrete sample of sizes and split and draw, and package unit structure is simple, small volume, can move freely, and can repeatedly use, Loading Control is convenient, flexible, data measured more tallies with the actual situation, and meets wedge interfere regulatory requirements.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is perspective view of the present invention.
Fig. 2 is main TV structure schematic diagram of the present invention.
Fig. 3 is plan structure schematic diagram of the present invention.
Fig. 4 is side-looking structural representation of the present invention.
Fig. 5 is the structural representation of shifting board in the present invention.
Fig. 6 is the structural representation of threaded rod bearing in the present invention.
In figure: substrate 1, lower platen 2, top board 3, shifting board 4, side plate 5, threaded rod 6, connecting link 7, connects guide rod 8, top board termination 9, chute 10, top board face 11, lower platen face 12, lower platen termination 13, shifting board notch 14, sliding eye 15, bolt connecting hole 16, threaded hole 17, sidewall 18.
Embodiment
Embodiment 1:
As in Fig. 1-5, drawing device split by a kind of multifunctional concrete test specimen, comprise framework, lower platen 2 is provided with below framework, be provided with above framework can be vertically movable top board 3, the lower surface of top board 3 is provided with top board face 11, and the upper surface of lower platen 2 is provided with lower platen face 12, and top board face 11 and lower platen face 12 become linear contact lay with the test specimen between described top board face 11 and lower platen face 12; In the scheme optimized, described top board face 11 and the xsect camber in lower platen face 12, V-arrangement or U-shaped.As in Fig. 1,4, the arc adopted in this example.
As in Fig. 1-3, be also relatively provided with in described framework slidably for clamping the shifting board 4 of test specimen.
Described framework is have the rectangle frame being convenient to observation and action pane, not shown.Be fixed on the bottom of framework with reference to lower platen 2 as shown in Fig. 1,2, top board 3 is connected with the chute on framework side plate by top board termination 9.Structure thus, when applying pressure to top board 3, can realize applying a pressure line load to test specimen.
As in Fig. 2, shifting board 4 is connected with threaded rod 6 by bearing, and threaded rod 6 forms threaded engagement with the threaded hole 17 on side plate.
Along length or/and Width is provided with the scale for centering on described framework.
Embodiment 2:
On the basis of embodiment 1, further optimization is done to frame part.
As in Fig. 1-4, in described framework, connected by many connecting links 7 between side plate 5, as illustrated in fig. 1-3, bottom has the two ends of two connecting links 7 to be fixedly connected with side plate 5, top also has the two ends of 4 connection guide rods 8 to be fixedly connected with side plate 5, and side plate 5 lower end is fixedly connected with substrate 1, forms firm framework thus.Lower platen 2 is connected with substrate 1.
As in Fig. 1, side plate 5 upper end is provided with chute 10, and chute 10 is slidably matched with the top board termination 9 of top board 3; In the scheme optimized, described top board termination 9 is provided with two and forms with chute 10 sidewall be slidably matched.Structure thus, improves the precision that top board 3 slides, and guarantees accuracy of alignment when testing.
As in Fig. 5, shifting board 4 is also provided with the bolt connecting hole 16 for being connected with threaded rod 6 bearing, structure thus, formed between threaded rod 6 and shifting board 4 rotatable and mutually between can not the threadingly connected mode that moves axially of bar 6.It should be noted that, rotation herein, can be rolling bearing also can be sliding bearing, and bearing can be located in bolt connecting hole 16, also can be the termination being positioned at threaded rod 6, and as shown in Figure 6, the bearing in figure is positioned at the termination of threaded rod 6.Structure described herein also may be used in embodiment 1.
Threaded rod 6 forms threaded engagement with the threaded hole 17 on side plate, is usually provided with handle in the outer end of threaded rod 6, or butterfly sheet.Structure thus, rotate threaded rod 6, under the effect of the threaded hole 17 on side plate, namely threaded rod 6 promotes shifting board 4 and moves, and due to the existence of bearing, shifting board 4 can not rotate along with threaded rod 6.
As in Fig. 1,4, described lower platen 2 two ends are provided with lower platen termination 13, and lower platen termination 13 is formed with the notch of side plate 5 lower end and coordinates.Structure thus, guarantees the accuracy of alignment of lower platen 2 further.
As in Fig. 5, shifting board 4 is provided with multiple sliding eye 15 for being slidably matched with connecting link 7, and shifting board 4 lower end has the shifting board notch 14 of avoiding interfering with lower platen face 12.Structure thus, guarantees that the slip of shifting board 4 is more smooth and easy, and in sliding process, can not be subject to the impact that threaded rod 6 rotates.
Along length or/and Width is provided with the scale for centering on described framework, not shown.Structure thus, is convenient to the centering of test specimen.
Device of the present invention is not only suitable for the cube specimen of different size, is also applicable to the standard cylinder test specimen in u.s. norm.When needs split draw cube specimen time, lower platen 2 is placed on substrate 1, lower platen termination 13 is located by side plate 5, connecting link 7 is through the respective aperture on side plate 5 and shifting board 4, rotate test specimen is fixed on lower platen 2 by threaded rod 6 middle by shifting board 4, install pressing plate 3, the top board termination 9 at top board 3 two ends is placed in the chute 10 of side plate 5.A whole set of test unit is placed on universal test pressing machine, is placed on the middle of pressing machine by the scale control device on framework; The crossbeam of falling pressure machine, until compress top board 3; Pump the connecting link 7 of side plate 5 both sides, starting pressure machine, continuous uniform ground loads, until destroy.Split draw standard cylinder test specimen time, only need unload middle shifting board 4, connecting link 7 is through two corresponding holes outside side plate 5, and all the other operations are the same with above-mentioned.
Claims (5)
1. drawing device split by a multifunctional concrete test specimen, comprise framework, it is characterized in that: below framework, be provided with lower platen (2), be provided with above framework can be vertically movable top board (3), the lower surface of top board (3) is provided with top board face (11), the upper surface of lower platen (2) is provided with lower platen face (12), and top board face (11) and lower platen face (12) become linear contact lay with the test specimen be positioned between described top board face (11) and lower platen face (12);
In described framework, pass through many connecting links (7) between side plate (5) and be connected guide rod (8) connection, shifting board (4) and connecting link (7) and be connected guide rod (8) and be slidably matched, side plate (5) lower end is fixedly connected with substrate (1), and lower platen (2) is connected with substrate (1);
Shifting board (4) is provided with multiple sliding eye (15) for being slidably matched with connecting link (7), and shifting board (4) lower end has the shifting board notch (14) of avoiding interfering with lower platen face (12);
Side plate (5) upper end is provided with chute (10), and chute (10) is slidably matched with the top board termination (9) of top board (3); Also relatively be provided with slidably for clamping the shifting board (4) of test specimen in described framework;
Shifting board (4) is also provided with the bolt connecting hole (16) for being connected with threaded rod (6) bearing, threaded hole (17) on threaded rod (6) and side plate forms threaded engagement, formed between threaded rod (6) and shifting board (4) rotatably and mutual between can not the threadingly connected mode that moves axially of bar (6).
2. drawing device split by a kind of multifunctional concrete test specimen according to claim 1, it is characterized in that: described top board face (11) and the xsect camber of lower platen face (12), V-arrangement or U-shaped.
3. drawing device split by a kind of multifunctional concrete test specimen according to claim 1, it is characterized in that: described lower platen (2) two ends are provided with lower platen termination (13), and lower platen termination (13) are formed with the notch of side plate (5) lower end and coordinate.
4. drawing device split by a kind of multifunctional concrete test specimen according to claim 1, it is characterized in that: described top board termination (9) is provided with two and forms with chute (10) sidewall be slidably matched.
5. drawing device split by a kind of multifunctional concrete test specimen according to claim 1, it is characterized in that: along length or/and Width is provided with the scale for centering on described framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310059541.7A CN103149092B (en) | 2013-02-26 | 2013-02-26 | Drawing device split by multifunctional concrete test specimen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310059541.7A CN103149092B (en) | 2013-02-26 | 2013-02-26 | Drawing device split by multifunctional concrete test specimen |
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| CN103149092A CN103149092A (en) | 2013-06-12 |
| CN103149092B true CN103149092B (en) | 2016-02-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043876B (en) * | 2015-08-25 | 2018-02-16 | 张江涛 | Bilinearity split the law determines the experimental rig of quasi-brittle material tensile strength |
| CN105508357B (en) * | 2015-12-22 | 2018-06-12 | 湖南大学 | It is a kind of to reduce the axially eccentric assembling device of tensile test specimen and operating method |
| CN107132130A (en) * | 2017-06-14 | 2017-09-05 | 黄河科技学院 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
| CN109668777B (en) * | 2019-03-01 | 2021-04-09 | 防城港市十一冶混凝土有限公司 | Test auxiliary device for detecting concrete splitting tensile strength |
| CN110044688B (en) * | 2019-04-23 | 2024-04-09 | 浙江工业大学 | Multifunctional clamp for concrete splitting tensile strength experiment |
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|---|---|---|---|---|
| JPS60128325A (en) * | 1983-12-15 | 1985-07-09 | Kyowa Dengiyou:Kk | Detecting device of young's modulus of concrete |
| CN201859089U (en) * | 2010-08-03 | 2011-06-08 | 天津大学 | Test fixture for split tensile strength of concrete |
| CN203069456U (en) * | 2013-02-26 | 2013-07-17 | 三峡大学 | Multifunctional concrete sample splitting and pulling device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6027839A (en) * | 1983-07-25 | 1985-02-12 | Akitoshi Mochizuki | Loading apparatus in soil testing apparatus |
| CN202041421U (en) * | 2011-03-01 | 2011-11-16 | 天津钢管集团股份有限公司 | Clamping tool for continuous elongating-compressing test |
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2013
- 2013-02-26 CN CN201310059541.7A patent/CN103149092B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60128325A (en) * | 1983-12-15 | 1985-07-09 | Kyowa Dengiyou:Kk | Detecting device of young's modulus of concrete |
| CN201859089U (en) * | 2010-08-03 | 2011-06-08 | 天津大学 | Test fixture for split tensile strength of concrete |
| CN203069456U (en) * | 2013-02-26 | 2013-07-17 | 三峡大学 | Multifunctional concrete sample splitting and pulling device |
Non-Patent Citations (2)
| Title |
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| "Prediction split tensile strength and water permeability of high strength concrete containing TiO2 nanoparticles by artificial neural network and genetic programming";Ali Nazari, Shadi Riahi;《Composites:Part B》;20110430;第43卷(第3期);第473-488页 * |
| "钢纤维混凝土抗拉性能试验研究";韩嵘 等;《土木工程学报》;20061130;第39卷(第11期);第63-67页 * |
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