CN110044688B - Multifunctional clamp for concrete splitting tensile strength experiment - Google Patents
Multifunctional clamp for concrete splitting tensile strength experiment Download PDFInfo
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- CN110044688B CN110044688B CN201910330103.7A CN201910330103A CN110044688B CN 110044688 B CN110044688 B CN 110044688B CN 201910330103 A CN201910330103 A CN 201910330103A CN 110044688 B CN110044688 B CN 110044688B
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- pressure head
- replaceable
- sliding
- side plate
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- 238000002474 experimental method Methods 0.000 title claims abstract description 11
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 25
- 239000012780 transparent material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- 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
- G01N2203/0405—Features allowing alignment between specimen and 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 discloses a multifunctional clamp for concrete splitting tensile strength experiments, which comprises an upper bearing plate, a supporting plate, a lower bearing plate, a first side plate, a second side plate and a sample clamp mechanism, wherein the supporting plate is connected with the lower bearing plate through the first side plate and the second side plate; the lower bearing plate is provided with a sample clamp mechanism. According to the invention, the protection of the supporting plate and the whole frame is used for ensuring that a user and a test piece are safer, both the rectangular test piece and the cylindrical test piece can be subjected to stress centering by replacing the pressure head and the pressure-receiving table, the front clamping plate and the rear clamping plate can move up and down back and forth, so that the test piece can be conveniently cut, the centering of the test piece is facilitated by transparent materials and the graduated scale, and the test piece is more stable by replacing rubber balls with different sizes.
Description
Technical Field
The invention relates to a clamp for concrete experiments, in particular to a multifunctional clamp for concrete splitting tensile strength experiments.
Background
At present, according to the method for measuring the splitting tensile strength of concrete in the national standard 'standard for common concrete mechanical property test method GB/T50081-2002', test fixtures required in the specification are not provided with a test piece leveling device due to the fact that the test piece is required to be centered for a long time in the test process, and the test efficiency is greatly reduced. Meanwhile, the upper pressure head of the clamp is not provided with a fixing device, and the problems of deflection of the upper pressure head and the like easily occur in the test process. In addition, often meet the pressure head and drop or block on the support when test piece is crushed, test operation is inconvenient. The accuracy of the experimental measurement is affected to some extent by the presence of the above problems.
Although the existing invention patent can solve the problem that the pressure head falls, the device for fixing the test piece in two directions is fewer, and the problem of deflection still exists when the pressure head moves downwards, so that the flexibility of the device and the capability of being suitable for various different test pieces are insufficient.
Disclosure of Invention
In order to solve the problem of the existing concrete splitting tensile strength experiment clamp, the invention provides the multifunctional clamp which can be adjusted, disassembled and replaced, can restrict two directions and has stable stress direction for the concrete splitting tensile strength experiment.
A multifunctional clamp for concrete splitting tensile strength experiments is characterized in that: the clamp comprises an upper bearing plate, a supporting plate, a lower bearing plate, a side plate I, a side plate II and a sample clamp mechanism, wherein the supporting plate and the lower bearing plate are connected through the side plate I and the side plate II, the side plate I and the side plate II are arranged in parallel, and sliding grooves are symmetrically arranged on the side plate I and the side plate II in the direction perpendicular to the lower bearing plate respectively; the center of the supporting plate is provided with a rectangular hole, the lower surface of the middle part of the upper bearing plate is provided with a rectangular column, and the rectangular column is connected in the rectangular hole in a vertical sliding way; the rectangular column body is provided with a through hole, a guide rod is fixedly arranged at the through hole, and two ends of the guide rod are respectively connected with the sliding grooves on the first side plate and the second side plate in a sliding manner; the lower surface of the rectangular cylinder is provided with a square boss I, the square boss I is movably connected with a replaceable upper pressure head, and the upper surface of the square boss I is provided with a square groove I which is matched with the square groove I of the replaceable upper pressure head;
the upper surface of the middle part of the lower bearing plate is provided with a square boss II which is matched with the square boss I; the second square boss is movably connected with a replaceable lower pressure head with a second square groove arranged on the lower surface, and the second square boss is matched with the second square groove; the replaceable lower pressure head is matched with the replaceable upper pressure head;
the sample clamp mechanism comprises cross clamping plates which are respectively arranged at two ends of the replaceable lower pressure head in a sliding manner, the end parts of the cross clamping plates are provided with square grooves III which can be respectively and movably connected with the square bosses II and the replaceable lower pressure head, the upper surface of the replaceable lower pressure head is provided with sliding grooves which are matched with the square grooves in a three-phase manner, and the cross clamping plates can be respectively and slidably connected with the replaceable lower pressure head and the square bosses II; the cross-shaped clamping plates comprise transverse plates and vertical plates, the cross-shaped transverse plates are fixedly connected through screw rods, the screw rods can adjust the distance between the cross-shaped clamping plates positioned on two sides of the replaceable lower pressing head, and a closed area is formed between the cross-shaped clamping plates and the screw rods; the vertical plate is provided with a first chute in the vertical direction, and the transverse plate can move up and down in the first chute through bolts and is fixed on the vertical plate;
the lower bearing plate is provided with a plurality of sliding grooves II which are perpendicular to the replaceable lower pressure head, a hollow sliding way I is arranged in the lower bearing plate, and the sliding grooves II are communicated with the sliding way I; a sliding plate is arranged in the first sliding way, and a limiting block is arranged at a position on the sliding plate corresponding to the second sliding way, so that the sliding plate slides along the second sliding way in a direction perpendicular to the replaceable lower pressure head; the end part of the sliding plate is provided with an operating handle in an outward extending mode, the corresponding position of the lower bearing plate is provided with an extending plate in an outward extending mode, the extending plate is provided with a second slideway, and the operating handle is slidably fixed in the second slideway; the limiting block is detachably provided with an elastic ball.
Further, the lower surface of the replaceable upper pressure head is arc-shaped, and the upper surface of the replaceable lower pressure head is arc-shaped.
Further, the transverse plate and the vertical plate are transparent, and scales are respectively arranged on the transverse plate and the vertical plate.
Further, the operating handle is connected with the second slideway through a bolt.
Further, two ends of the guide rod are respectively provided with a bidirectional guide wheel, and the bidirectional guide wheels are matched with the sliding grooves.
Further, a zigzag guide groove is arranged between the rectangular column body and the supporting plate.
During the experiment, can dismantle pressure head and lower pressure head in a flexible way according to test piece side or circle to the position of adjustment cross splint and the position of stopper are fixed it. The cross fixture is made of transparent plastic for printing the graduated scale, the transverse plate of the cross fixture can be adjusted and fixed by means of vertical movement of bolts, and meanwhile, guide grooves are formed in the centers of the vertical plate and the transverse plate of the fixture to facilitate movement of the stressed support rods between the vertical plate and the transverse plate. The two sides of the lower bearing platform are provided with a plurality of symmetrical slide ways, and the position of the limiting block in the lower bearing platform can slide left and right through the handle at the side edge of the lower bearing platform and is fixed through bolts.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the protection of the supporting plate and the whole frame is used for ensuring that a user and a test piece are safer, both the rectangular test piece and the cylindrical test piece can be subjected to forced centering by replacing the pressure head and the pressure-receiving table, the front clamping plate and the rear clamping plate can move back and forth to facilitate the test piece cutting, the transparent material and the graduated scale facilitate the centering of the test piece, and the rubber balls with different sizes can be detached and replaced to facilitate the auxiliary support at the lower part to ensure that the test piece is more stable.
Drawings
FIG. 1 is an overall view of a concrete split tensile strength test fixture of the present invention;
FIG. 2 is a second overall view of the split tensile strength test fixture of the present invention;
FIG. 3 is a partial view of the upper bearing plate;
FIG. 4 is a partial view of the upper bearing plate;
FIG. 5 is a top view of the upper bearing plate;
FIG. 6 is a view of the lower bearing plate;
fig. 7 is a front view of a cross-shaped clamp.
Fig. 8 is an interior view of the lower bearing plate.
Detailed Description
Embodiments of the invention are described in detail below with reference to the accompanying drawings, which form a part hereof, and together with the embodiments of the invention serve to explain the principles of the invention.
In the drawing, a rectangular column body 1-a support plate 2-a side plate 3-a side plate 4-a side plate II, a lower support plate 5-a extending plate 6-a replaceable lower pressing head 7-a vertical plate 8-a sliding groove 9-a sliding plate 10-a sliding plate 11-a screw rod 12-a guide rod 13-an upper support plate 14-an operating handle 15-a square boss I16-a replaceable upper pressing head 17-a sliding groove II 18-a sliding way I19-a sliding way II 21-a limiting block 22-a square boss II 23-a square groove II 24-a sliding groove 30-a scale 31-a sliding groove I35-a square groove I36-a square boss II 37-a square groove III 38-a transverse plate 39-a bolt.
The invention relates to a multifunctional clamp for a concrete splitting tensile strength experiment, which comprises an upper bearing plate (13), a supporting plate (2), a lower bearing plate (5), a first side plate (3), a second side plate (4) and a sample clamp mechanism, wherein the supporting plate (2) is connected with the lower bearing plate (5) through the first side plate (3) and the second side plate (4), the first side plate (3) and the second side plate (4) are arranged in parallel, and sliding grooves (9) are symmetrically arranged on the first side plate (3) and the second side plate (4) in the direction perpendicular to the lower bearing plate (5); the center of the supporting plate (2) is provided with a rectangular hole, the lower surface of the middle part of the upper bearing plate (13) is provided with a rectangular column body (1), and the rectangular column body (1) is connected in an up-down sliding way in the rectangular hole; the rectangular column body (1) is provided with a through hole (34), a guide rod (12) is fixedly arranged at the through hole (34), and two ends of the guide rod (12) are respectively connected with sliding grooves (9) on the side plate I (3) and the side plate II (2) in a sliding manner; the lower surface of the rectangular cylinder (1) is provided with a square boss I (15), the square boss I (15) is movably connected with a replaceable upper pressure head (16) with a square groove I (35) arranged on the upper surface, and the square boss I (15) is matched with the square groove I (35) of the replaceable upper pressure head (16);
the upper surface of the middle part of the lower bearing plate (5) is provided with a square boss II (36), and the square boss II (36) is matched with the square boss I (15); the second square boss (36) is movably connected with a replaceable lower pressure head (7) with a second square groove (23) arranged on the lower surface, and the second square boss (22) is matched with the second square groove (23); the replaceable lower pressure head (7) is matched with the replaceable upper pressure head (16);
the sample clamp mechanism comprises cross clamping plates which are respectively arranged at two ends of the replaceable lower pressure head (7) in a sliding manner, wherein the end parts of the cross clamping plates are provided with square grooves III (37) which can be respectively and movably connected with a square boss II (36) and the replaceable lower pressure head (7), the upper surface of the replaceable lower pressure head (7) is provided with sliding grooves (24) matched with the square grooves III (37), and the cross clamping plates can be respectively and slidably connected with the replaceable lower pressure head (7) and the square boss II (36); the cross clamping plate comprises a cross plate (38) and a vertical plate (8), the cross plates (38) are fixedly connected through a screw rod (11), the screw rod (11) can adjust the distance between the cross clamping plates positioned at two sides of the replaceable lower pressing head (7), and a closed area is formed between the cross clamping plates and the screw rod (11); the vertical plate (8) is provided with a first chute (31) in the vertical direction, and the transverse plate (38) can move up and down in the first chute (31) through a bolt (39) and is fixed on the vertical plate (8);
the lower bearing plate (5) is provided with a plurality of sliding grooves II (17) which are perpendicular to the replaceable lower pressure head (7), a hollow sliding way I (18) is arranged in the lower bearing plate (5), and the sliding grooves II (17) are communicated with the sliding way I (18); a sliding plate (10) is arranged in the first sliding way (18), and a limiting block (21) is arranged at a position on the sliding plate (10) corresponding to the second sliding way (17) so that the sliding plate (10) slides along the second sliding way (17) in a direction perpendicular to the replaceable lower pressure head (7); the end part of the sliding plate (10) is provided with an operating handle (14) in an outward extending mode, the corresponding position of the lower bearing plate (5) is provided with an extending plate (6) in an outward extending mode, the extending plate (6) is provided with a second slideway (19), and the operating handle (14) is slidably fixed in the second slideway (19); the limiting block (21) is detachably provided with an elastic ball (15).
The lower surface of the replaceable upper pressure head (16) is arc-shaped, and the upper surface of the replaceable lower pressure head (7) is arc-shaped.
The transverse plate (38) and the vertical plate (8) are transparent, and are respectively provided with scales (30).
The operating handle (14) is connected with the second slideway (19) through bolts.
Two ends of the guide rod (12) are respectively provided with a bidirectional guide wheel, and the bidirectional guide wheels are matched with the sliding grooves (9).
A zigzag guide groove is arranged between the rectangular column body (1) and the supporting plate (2).
The present invention is not limited to the above embodiments, and all equivalent changes and modifications made according to the claims of the present invention shall be covered by the present invention.
Claims (4)
1. A multifunctional clamp for concrete splitting tensile strength experiments is characterized in that: the clamp comprises an upper bearing plate (13), a support plate (2), a lower bearing plate (5), a first side plate (3), a second side plate (4) and a sample clamp mechanism, wherein the support plate (2) is connected with the lower bearing plate (5) through the first side plate (3) and the second side plate (4), the first side plate (3) and the second side plate (4) are arranged in parallel, and sliding grooves (9) are symmetrically arranged on the first side plate (3) and the second side plate (4) in the direction perpendicular to the lower bearing plate (5) respectively; the center of the supporting plate (2) is provided with a rectangular hole, the lower surface of the middle part of the upper bearing plate (13) is provided with a rectangular column body (1), and the rectangular column body (1) is connected in an up-down sliding way in the rectangular hole; the rectangular column body (1) is provided with a through hole (34), a guide rod (12) is fixedly arranged at the through hole (34), and two ends of the guide rod (12) are respectively connected with sliding grooves (9) on the side plate I (3) and the side plate II (4) in a sliding manner; the lower surface of the rectangular cylinder (1) is provided with a square boss I (15), the square boss I (15) is movably connected with a replaceable upper pressure head (16) with a square groove I (35) arranged on the upper surface, and the square boss I (15) is matched with the square groove I (35) of the replaceable upper pressure head (16);
the upper surface of the middle part of the lower bearing plate (5) is provided with a square boss II (36), and the square boss II (36) is matched with the square boss I (15); the second square boss (36) is movably connected with a replaceable lower pressure head (7) with a second square groove (23) arranged on the lower surface, and the second square boss (36) is matched with the second square groove (23); the replaceable lower pressure head (7) is matched with the replaceable upper pressure head (16);
the sample clamp mechanism comprises cross clamping plates which are respectively arranged at two ends of the replaceable lower pressure head (7) in a sliding manner, wherein the end parts of the cross clamping plates are provided with square grooves III (37) which can be respectively and movably connected with a square boss II (36) and the replaceable lower pressure head (7), the upper surface of the replaceable lower pressure head (7) is provided with sliding grooves (24) matched with the square grooves III (37), and the cross clamping plates can be respectively and slidably connected with the replaceable lower pressure head (7) and the square boss II (36); the cross-shaped clamping plate comprises a transverse plate (38) and a vertical plate (8), the transverse plates (38) are fixedly connected through a screw rod (11), the screw rod (11) can adjust the distance between the cross-shaped clamping plates positioned on two sides of the replaceable lower pressure head (7), and a closed area is formed between the cross-shaped clamping plates and the screw rod (11); the vertical plate (8) is provided with a first chute (31) in the vertical direction, and the transverse plate (38) can move up and down in the first chute (31) through a bolt (39) and is fixed on the vertical plate (8);
the lower bearing plate (5) is provided with a plurality of sliding grooves II (17) which are perpendicular to the replaceable lower pressure head (7), a hollow sliding way I (18) is arranged in the lower bearing plate (5), and the sliding grooves II (17) are communicated with the sliding way I (18); a sliding plate (10) is arranged in the first sliding way (18), and a limiting block (21) is arranged at a position on the sliding plate (10) corresponding to the second sliding way (17) so that the sliding plate (10) slides along the second sliding way (17) in a direction perpendicular to the replaceable lower pressure head (7); the end part of the sliding plate (10) is provided with an operating handle (14) in an outward extending mode, the corresponding position of the lower bearing plate (5) is provided with an extending plate (6) in an outward extending mode, the extending plate (6) is provided with a second slideway (19), and the operating handle (14) is slidably fixed in the second slideway (19); an elastic ball (20) is detachably arranged on the limiting block (21);
the lower surface of the replaceable upper pressure head (16) is arc-shaped, and the upper surface of the replaceable lower pressure head (7) is arc-shaped;
a zigzag guide groove is arranged between the rectangular column body (1) and the supporting plate (2).
2. The multi-purpose fixture of claim 1, wherein: the transverse plate and the vertical plate are transparent, and are respectively provided with scales (30).
3. The multi-purpose fixture of claim 1, wherein: the operating handle (14) is connected with the second slideway (19) through bolts.
4. The multi-purpose fixture of claim 1, wherein: two ends of the guide rod (12) are respectively provided with a bidirectional guide wheel, and the bidirectional guide wheels are matched with the sliding grooves (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330103.7A CN110044688B (en) | 2019-04-23 | 2019-04-23 | Multifunctional clamp for concrete splitting tensile strength experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330103.7A CN110044688B (en) | 2019-04-23 | 2019-04-23 | Multifunctional clamp for concrete splitting tensile strength experiment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110044688A CN110044688A (en) | 2019-07-23 |
| CN110044688B true CN110044688B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910330103.7A Active CN110044688B (en) | 2019-04-23 | 2019-04-23 | Multifunctional clamp for concrete splitting tensile strength experiment |
Country Status (1)
| Country | Link |
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| CN (1) | CN110044688B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116642758B (en) * | 2023-05-31 | 2024-01-23 | 辽宁中科航帆测试技术有限公司 | Device and method for testing fatigue mechanical properties of material under tensile bending composite load |
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| JP2003194687A (en) * | 2001-12-28 | 2003-07-09 | Kyushu Electric Power Co Inc | Split testing device and split test method |
| CN101936851A (en) * | 2010-09-02 | 2011-01-05 | 中国科学院武汉岩土力学研究所 | Specimen clamp for measuring tensile strength of rock by splitting method |
| CN202770718U (en) * | 2012-09-07 | 2013-03-06 | 郑州大学 | Fiber asphalt mixture low-temperature splitting test device |
| CN103149092A (en) * | 2013-02-26 | 2013-06-12 | 三峡大学 | Multifunctional concrete sample splitting device |
| CN204142569U (en) * | 2014-09-18 | 2015-02-04 | 中铁十七局集团第三工程有限公司 | Concrete splitting tensile strength test clamp |
| CN107246995A (en) * | 2017-06-30 | 2017-10-13 | 天津大学 | A kind of multi-functional clamp determined for concrete splitting tensile strength |
| JP2018197656A (en) * | 2017-05-23 | 2018-12-13 | 東京電力ホールディングス株式会社 | Evaluation test apparatus and evaluation test method for rebar corrosion associated with concrete column crack |
| CN210401036U (en) * | 2019-04-23 | 2020-04-24 | 浙江工业大学 | Multifunctional clamp for concrete splitting tensile strength experiment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104981644B (en) * | 2014-06-27 | 2017-06-30 | 深圳市大疆灵眸科技有限公司 | Locking device and its head for using |
-
2019
- 2019-04-23 CN CN201910330103.7A patent/CN110044688B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194687A (en) * | 2001-12-28 | 2003-07-09 | Kyushu Electric Power Co Inc | Split testing device and split test method |
| CN101936851A (en) * | 2010-09-02 | 2011-01-05 | 中国科学院武汉岩土力学研究所 | Specimen clamp for measuring tensile strength of rock by splitting method |
| CN202770718U (en) * | 2012-09-07 | 2013-03-06 | 郑州大学 | Fiber asphalt mixture low-temperature splitting test device |
| CN103149092A (en) * | 2013-02-26 | 2013-06-12 | 三峡大学 | Multifunctional concrete sample splitting device |
| CN204142569U (en) * | 2014-09-18 | 2015-02-04 | 中铁十七局集团第三工程有限公司 | Concrete splitting tensile strength test clamp |
| JP2018197656A (en) * | 2017-05-23 | 2018-12-13 | 東京電力ホールディングス株式会社 | Evaluation test apparatus and evaluation test method for rebar corrosion associated with concrete column crack |
| CN107246995A (en) * | 2017-06-30 | 2017-10-13 | 天津大学 | A kind of multi-functional clamp determined for concrete splitting tensile strength |
| CN210401036U (en) * | 2019-04-23 | 2020-04-24 | 浙江工业大学 | Multifunctional clamp for concrete splitting tensile strength experiment |
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| CN110044688A (en) | 2019-07-23 |
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