CN219694731U - Tensile test clamp for geogrid - Google Patents
Tensile test clamp for geogrid Download PDFInfo
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- CN219694731U CN219694731U CN202320296655.2U CN202320296655U CN219694731U CN 219694731 U CN219694731 U CN 219694731U CN 202320296655 U CN202320296655 U CN 202320296655U CN 219694731 U CN219694731 U CN 219694731U
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- geogrid
- tensile test
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- 238000009864 tensile test Methods 0.000 title claims abstract description 41
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 230000000670 limiting effect Effects 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of clamps and discloses a tensile test clamp for a geogrid, wherein a first clamping block and a second clamping block are oppositely arranged in a cavity, a first clamping surface and a second clamping surface are respectively arranged on the left side and the right side of the first clamping block, the first clamping surface is matched with the first side wall of the cavity in shape, and a third clamping surface matched with the second clamping surface is arranged on the second clamping block; the first clamping block is provided with a horizontally arranged strip hole, the cavity is fixedly provided with a positioning column penetrating through the strip hole, a first reset spring is arranged in the strip hole, a second reset spring is connected between the second clamping block and the second side wall of the cavity, the compression bolt is in threaded connection with the adjusting hole of the second side wall of the base, the second clamping block is horizontally arranged in the cavity in a sliding mode, and the screw rod of the compression bolt penetrates into the cavity and can push the second clamping block; the utility model can firmly clamp the geogrid to carry out tensile test, is not easy to slip, and the first clamping block and the second clamping block can be automatically reset, so that the use is convenient.
Description
Technical Field
The utility model relates to the technical field of clamps, in particular to a tensile test clamp for a geogrid.
Background
Geogrid is widely used as an indispensable building material in highways, and the application of geogrid effectively improves the deformation resistance and fatigue resistance of the pavement, so that the service life of the highways is prolonged. In tensile test, need press from both sides tight with geogrid's both ends respectively through two anchor clamps that set up in opposite directions about, then straighten geogrid and test, but the clamping mouth of current anchor clamps is straight structure, when pressing from both sides tight, appears the clamping force too little easily and lead to unable clamp tightly easily, makes geogrid slide in the clamping mouth, leads to tensile test data inaccurate.
Disclosure of Invention
The utility model aims to provide a tensile test clamp for a geogrid, which can firmly clamp the geogrid to carry out a tensile test, is not easy to slip, and is convenient to use, and the first clamping block and the second clamping block can be automatically reset.
In order to achieve the above purpose, the utility model provides a tensile test fixture for a geogrid, which is connected with a tensile test machine joint and comprises a base, a first clamping block, a second clamping block and a compression bolt, wherein a cavity is arranged on the base, the first clamping block and the second clamping block are oppositely arranged in the cavity, a first clamping surface and a second clamping surface are respectively arranged on the left side and the right side of the first clamping block, the first clamping surface is in shape fit with a first side wall of the cavity, a first clamping channel for clamping the geogrid is formed between the first clamping surface and the first side wall of the cavity, a third clamping surface matched with the second clamping surface is arranged on the second clamping block, and a second clamping channel for clamping the geogrid is formed between the second clamping surface and the third clamping surface; the horizontal long hole is formed in the first clamping block, the positioning column is fixedly arranged on the cavity, the positioning column penetrates through the long hole, the long hole and the positioning column can slide relatively, a first reset spring is arranged in the long hole, a first end of the first reset spring is connected with one side, close to the second clamping block, of the positioning column, a second end of the first reset spring is connected with one side, close to the second clamping block, of the long hole, a second reset spring is connected between the second clamping block and the second side wall of the cavity, the original length of the first reset spring is smaller than that of the second reset spring, an adjusting hole is formed in the second side wall of the base, a compression bolt is in threaded connection with the adjusting hole, the second clamping block is horizontally arranged in the cavity in a sliding mode, and a screw of the compression bolt penetrates into the cavity and can push the second clamping block to drive the first clamping block to abut against the first side wall of the cavity.
As a preferable scheme of the utility model, a first arc bulge and a first vertical edge are sequentially arranged at the first clamping surface from the tensile testing machine joint to the opening of the cavity, and a second arc bulge, a second vertical edge and a third arc bulge are sequentially arranged at the second clamping surface from the tensile testing machine joint to the opening of the cavity.
As a preferable aspect of the present utility model, the radius of the second circular arc protrusion is larger than the radius of the third circular arc protrusion.
As a preferable scheme of the utility model, the first arc-shaped bulge and the second arc-shaped bulge are arranged in an axisymmetric way.
As a preferable scheme of the utility model, the first arc protrusion and the first vertical edge are in smooth transition; the second circular arc protrusion and the second vertical edge are in smooth transition, and the second vertical edge and the third circular arc protrusion are in smooth transition.
As a preferred embodiment of the present utility model, the first clamping surface, the second clamping surface, the third clamping surface and the first side wall of the cavity are all provided with anti-skid patterns.
As a preferable scheme of the utility model, the first clamping block is provided with a limiting piece and two strip holes which are vertically arranged in parallel, the cavity is provided with two positioning columns which are in one-to-one correspondence with the two strip holes, the limiting piece is respectively connected with the tops of the two positioning columns, and the limiting piece is clung to the top surface of the first clamping block.
As a preferable scheme of the utility model, the cavity is provided with a guide chute which is horizontally arranged, and the second clamping block is provided with a guide block which is in sliding fit with the guide chute.
Compared with the prior art, the tensile test clamp for the geogrid has the beneficial effects that:
when the tensile test clamp clamps one end of the geogrid, the geogrid can be sequentially wound to the first clamping channel from the second clamping channel to be clamped by the opposite tensile test clamp, the first clamping block can slide left and right in the cavity through the matching of the strip holes and the positioning columns, when the tensile test clamp clamps the geogrid, the compression bolt is screwed to enable the screw rod of the compression bolt to be close to the second clamping block to be abutted against the second clamping block so as to push the second clamping block and drive the first clamping block to be abutted against the first side wall of the cavity through the second clamping block, thus the first clamping surface is tightly pressed on the first side wall of the cavity, the third clamping surface is tightly pressed on the second clamping surface, the first reset spring is compressed, the second reset spring is lengthened, the geogrid can be tightly clamped on the first clamping channel formed between the first clamping surface of the first clamping block and the first side wall of the cavity, and the second clamping channel formed between the second clamping surface of the first clamping block and the third clamping surface of the second clamping block are tightly pressed, the geogrid is wound and clamped on the first clamping block, the geogrid is prevented from being firmly contacted with the first clamping block, and the tensile test geogrid can be firmly tested by the geogrid; in addition, after the tensile test is finished, the screw rod of the compression bolt is far away from the second clamping block by screwing the compression bolt, the second clamping block moves towards the side, close to the second side wall, of the cavity under the reset action of the second reset spring, meanwhile, the first clamping block moves towards the side, close to the second clamping block, of the first clamping block under the reset action of the first reset spring, the first clamping surface of the first clamping block is far away from the first side wall of the cavity, and the original length of the first reset spring is smaller than that of the second reset spring, so that the reset moving distance of the second clamping block is larger than that of the first clamping block, the first clamping surface is separated from the first side wall and forms a gap, and the second clamping surface is separated from the third clamping surface and forms a gap, so that the next test is convenient to directly put into the geogrid without manually adjusting the positions of the first clamping block and the second clamping block, and the application is convenient.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic view of a tensile test fixture for geogrid in an unclamped state;
FIG. 2 is a schematic view of a tensile test clamp for geogrid according to the present utility model when clamping geogrid;
in the figure, 1 is a base; 11 is a cavity; 12 is a positioning column; 13 is a guide chute; 2 is a first clamping block; 21 is a first arc projection; 22 is a first vertical side; 23 is a second circular arc protrusion; 24 is a second vertical side; 25 is a third arc projection; 26 is a strip hole; 27 is a limiting piece; 3 is a second clamping block; 4 is a first return spring; 5 is a second return spring; 6 is a compression bolt; 7 is a geogrid.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model.
As shown in fig. 1 to 2, a tensile test fixture for a geogrid according to a preferred embodiment of the present utility model is connected with a tensile tester connector, the tensile test fixture for the geogrid comprises a base 1, a first clamping block 2, a second clamping block 3 and a compression bolt 6, a cavity 11 is arranged on the base 1, the first clamping block 2 and the second clamping block 3 are oppositely arranged in the cavity 11, a first clamping surface and a second clamping surface are respectively arranged on the left side and the right side of the first clamping block 2, the first clamping surface is matched with a first side wall of the cavity 11 in a shape, a first clamping channel for clamping the geogrid 7 is formed between the first clamping surface and the first side wall, a third clamping surface matched with the second clamping surface is arranged on the second clamping block 3, and a second clamping channel for clamping the geogrid 7 is formed between the second clamping surface and the third clamping surface;
the first clamping block 2 is provided with a strip hole 26 which is horizontally arranged, the cavity 11 is fixedly provided with a positioning column 12, the positioning column 12 penetrates through the strip hole 26, the strip hole 26 and the positioning column 12 can slide relatively, a first reset spring 4 is arranged in the strip hole 26, a first end of the first reset spring 4 is connected with one side, close to the second clamping block 3, of the positioning column 12, a second end of the first reset spring 4 is connected with one side, close to the second clamping block 3, of the strip hole 26, a second reset spring 5 is connected between the second clamping block 3 and a second side wall of the cavity 11, the original length of the first reset spring 4 is smaller than that of the second reset spring 5, an adjusting hole is formed in the second side wall of the base 1, a compression bolt 6 is in threaded connection with the hole, the second clamping block 3 is horizontally and slidably arranged in the cavity 11, and the compression bolt 6 penetrates into the cavity 11 and can drive the first clamping block 2 to abut against the first side wall of the cavity 11.
When the tensile test clamp clamps one end of the geogrid 7, the geogrid 7 can be sequentially wound to the first clamping channel from the second clamping channel to be clamped by the opposite tensile test clamp, the first clamping block 2 can slide left and right in the cavity 11 through the matching of the strip holes 26 and the positioning columns 12, when the tensile test clamp clamps the geogrid 7, the compression bolts 6 are screwed to enable the screw rods of the compression bolts 6 to be close to and abut against the second clamping block 3 to push the second clamping block 3 and drive the first clamping block 2 to abut against the first side wall of the cavity 11 through the second clamping block 3, so that the first clamping surface is pressed on the first side wall of the cavity 11, the third clamping surface is pressed on the second clamping surface, the first reset spring 4 is compressed, the second reset spring 5 is stretched, the geogrid 7 can be clamped between the first clamping surface of the first clamping block 2 and the first side wall of the cavity 11, the second clamping surface of the first clamping block 2 and the second clamping block 3 are driven by the second clamping block 3 to abut against the first side wall of the cavity 11, the geogrid 7 can be firmly contacted with the geogrid 7, and the tensile test clamp 7 can be firmly clamped on the geogrid 7 is prevented; in addition, after the tensile test is finished, the pressing bolt 6 is screwed to enable the screw rod of the pressing bolt 6 to be far away from the second clamping block 3, the second clamping block 3 moves towards the side, close to the second side wall, of the cavity 11 under the reset action of the second reset spring 5, of the second clamping block 3, meanwhile, the first clamping block 2 moves towards the side, close to the second clamping block 3, of the first clamping block 2 under the reset action of the first reset spring 4, the first clamping surface of the first clamping block 2 is far away from the first side wall of the cavity 11, and the original length of the first reset spring 4 is smaller than the original length of the second reset spring 5, so that the reset movement distance of the second clamping block 3 is larger than the reset movement distance of the first clamping block 2, the separation and the formation of a gap between the first clamping surface and the first side wall are guaranteed, and the separation and the formation of a gap between the second clamping surface and the third clamping surface are guaranteed, so that the next test is convenient to directly put into the geogrid 7 without manually adjusting the positions of the first clamping block 2 and the second clamping block 3.
The first clamping surface is sequentially provided with a first arc protrusion 21 and a first vertical edge 22 from the tensile testing machine connector to the opening of the cavity 11, the second clamping surface is sequentially provided with a second arc protrusion 23, a second vertical edge 24 and a third arc protrusion 25 from the tensile testing machine connector to the opening of the cavity 11, a clamping curved surface structure is formed between the first arc protrusion 21 and the first vertical edge 22, so that the geogrid 7 is ensured to vertically extend, the stress on the extending part of the geogrid 7 along the length direction is small, the fracture possibility of the geogrid 7 is reduced as much as possible, the second arc protrusion 23, the second vertical edge 24 and the third arc protrusion 25 form a clamping curved surface structure, and through the arrangement of the second vertical edge 24, a curved surface protrusion point is formed between the second arc protrusion 23 and the second vertical edge 24, a curved surface protrusion point can be formed between the second vertical edge 24 and the third arc protrusion 25, the possibility of slipping of the geogrid 7 is reduced, and the geogrid 7 is ensured to firmly clamp the geogrid 7.
Illustratively, the radius of the second circular arc protrusion 23 is larger than that of the third circular arc protrusion 25, so that curved surfaces with different radians are formed to improve the clamping effect of the tensile test fixture.
Illustratively, the first circular arc protrusion 21 and the second circular arc protrusion 23 are axisymmetrically arranged, and the first circular arc protrusion 21 and the second circular arc protrusion 23 are in smooth transition; the first circular arc protrusion 21 and the first vertical edge 22 are in smooth transition; the second circular arc protrusion 23 and the second vertical edge 24 are in smooth transition, the second vertical edge 24 and the third circular arc protrusion 25 are in smooth transition, so that a corner angle is prevented from being formed between the protrusions and the vertical edge to cause excessive concentration of stress, and the civil grid can be effectively clamped through cooperation of the joint of the smooth transition without damaging the civil grid.
The first clamping surface, the second clamping surface, the third clamping surface and the first side wall of the cavity 11 are provided with anti-skidding patterns, so that friction force between the civil grid and the tensile test clamp can be improved, and slipping is reduced.
The first clamping block 2 is provided with a limiting piece 27 and two elongated holes 26 which are vertically and parallelly arranged, the cavity 11 is provided with two positioning columns 12 which are in one-to-one correspondence with the two elongated holes 26, the limiting piece 27 is respectively connected with the tops of the two positioning columns 12, the limiting piece 27 is tightly attached to the top surface of the first clamping block 2, and the first clamping block 2 can be guaranteed to be tightly attached to the cavity 11 all the time under the limiting effect of the limiting piece 27, so that test data errors caused by the fact that the first clamping block 2 jumps out of the cavity 11 are avoided.
The cavity 11 is provided with a guiding chute 13 horizontally arranged, a guiding block which is in sliding fit with the guiding chute 13 is arranged at the bottom of the second clamping block 3, and a baffle which is used for preventing the guiding block from jumping out of the guiding chute 13 is specifically arranged on the guiding chute 13, so that the second clamping block 3 can stably move along the horizontal direction in the cavity 11, the second clamping block 3 can be ensured to move along a given path, and the second clamping block 3 is prevented from deviating and cannot be accurately matched with the first clamping block 2 to clamp the geogrid 7.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (8)
1. The tensile test fixture for the geogrid is connected with a joint of a tensile test machine and is characterized by comprising a base, a first clamping block, a second clamping block and a compression bolt, wherein a cavity is arranged on the base, the first clamping block and the second clamping block are oppositely arranged in the cavity,
the left side and the right side of the first clamping block are respectively provided with a first clamping surface and a second clamping surface, the first clamping surface is matched with the first side wall of the cavity in a shape, a first clamping channel for clamping the geogrid is formed between the first clamping surface and the first side wall of the cavity, the second clamping block is provided with a third clamping surface matched with the second clamping surface, and a second clamping channel for clamping the geogrid is formed between the second clamping surface and the third clamping surface;
the horizontal long hole is formed in the first clamping block, the positioning column is fixedly arranged on the cavity, the positioning column penetrates through the long hole, the long hole and the positioning column can slide relatively, a first reset spring is arranged in the long hole, a first end of the first reset spring is connected with one side, close to the second clamping block, of the positioning column, a second end of the first reset spring is connected with one side, close to the second clamping block, of the long hole, a second reset spring is connected between the second clamping block and the second side wall of the cavity, the original length of the first reset spring is smaller than that of the second reset spring, an adjusting hole is formed in the second side wall of the base, a pressing bolt is in threaded connection with the adjusting hole, the second clamping block is horizontally arranged in the cavity in a sliding mode, and a screw of the pressing bolt penetrates into the cavity and can push the second clamping block to abut against the first side wall of the cavity.
2. The tensile test fixture for geogrid according to claim 1, wherein the first clamping surface is sequentially provided with a first circular arc protrusion and a first vertical edge from the tensile tester joint to the opening of the cavity, and the second clamping surface is sequentially provided with a second circular arc protrusion, a second vertical edge and a third circular arc protrusion from the tensile tester joint to the opening of the cavity.
3. The tensile test fixture for a geogrid according to claim 2, wherein the radius of the second circular arc protrusion is greater than the radius of the third circular arc protrusion.
4. The tensile test fixture for geogrid according to claim 3, wherein the first circular arc protrusion and the second circular arc protrusion are axisymmetrically arranged.
5. The tensile test fixture for geogrid according to claim 2, wherein the first circular arc protrusion smoothly transitions with the first vertical edge; the second circular arc protrusion and the second vertical edge are in smooth transition, and the second vertical edge and the third circular arc protrusion are in smooth transition.
6. The tensile test fixture for a geogrid according to claim 1, wherein the first clamping face, the second clamping face, the third clamping face, and the first sidewall of the cavity are each provided with anti-skid patterns.
7. The tensile test fixture for geogrid according to claim 1, wherein the first clamping block is provided with a limiting piece and two elongated holes which are arranged in parallel up and down, the cavity is provided with two positioning columns which are in one-to-one correspondence with the two elongated holes, the limiting piece is respectively connected with the tops of the two positioning columns, and the limiting piece is clung to the top surface of the first clamping block.
8. The tensile test fixture for geogrid according to claim 1, wherein the cavity is provided with a horizontally arranged guide chute, and the second clamping block is provided with a guide block in sliding fit with the guide chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320296655.2U CN219694731U (en) | 2023-02-22 | 2023-02-22 | Tensile test clamp for geogrid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320296655.2U CN219694731U (en) | 2023-02-22 | 2023-02-22 | Tensile test clamp for geogrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219694731U true CN219694731U (en) | 2023-09-15 |
Family
ID=87963150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320296655.2U Active CN219694731U (en) | 2023-02-22 | 2023-02-22 | Tensile test clamp for geogrid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219694731U (en) |
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2023
- 2023-02-22 CN CN202320296655.2U patent/CN219694731U/en active Active
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