CN211927522U - Concrete cylinder core appearance limit tensile test device - Google Patents
Concrete cylinder core appearance limit tensile test device Download PDFInfo
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- CN211927522U CN211927522U CN202020305642.3U CN202020305642U CN211927522U CN 211927522 U CN211927522 U CN 211927522U CN 202020305642 U CN202020305642 U CN 202020305642U CN 211927522 U CN211927522 U CN 211927522U
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Abstract
The utility model discloses a concrete cylinder core sample limit tensile test device, which comprises two clamping devices clamped at two ends of a tested cylinder core sample; the clamping device comprises two clamping plates, two ends of each clamping plate are bent to form lug parts, holes are formed in the lug parts in a penetrating mode, arc-shaped clamping surfaces are machined on the inner sides of the clamping plates, a cylinder is arranged between the lug parts of the two clamping plates, bolts are welded to the outer walls of the cylinder, and nuts are matched after the bolts penetrate through the holes; a connecting rod is processed between the two columns, and a pull rod matched with stretching equipment is arranged in the middle of the connecting rod; this product can carry out the centre gripping to the sample of different diameters, and after the centre gripping, can assemble with tensile testing machine and carry out tensile test.
Description
Technical Field
The utility model relates to a concrete cylinder core appearance limit tensile test device.
Background
Concrete is a general term for engineering composite materials formed by cementing aggregate into a whole by cementing materials, and the term concrete generally refers to cement concrete which is prepared by mixing cement as the cementing material and sand and stone as the aggregate with water according to a certain proportion and stirring, and is also called common concrete, and is widely applied to civil engineering. Different engineering parts have different requirements on the mechanical property of concrete, and the ultimate tensile property of the concrete has important influence on the crack resistance of large-volume concrete members such as hydropower stations, roads and bridges, so that the ultimate tensile property of the concrete is tested, and the concrete has great significance on building engineering.
However, the existing concrete ultimate stretching device has some defects in the using process. For example, the 8-shaped jig clamp can only effectively clamp an 8-shaped sample formed indoors, and cannot effectively clamp a cylindrical uniform-section core sample drilled on a dam site, so that the ultimate tensile property of the concrete on the site cannot be detected. Therefore, we propose a concrete cylinder core sample ultimate tensile test device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a concrete cylinder core appearance limit tensile test device is provided.
The utility model discloses a realize through following technical scheme:
a concrete cylinder core sample ultimate tensile test device comprises two clamping devices clamped at two ends of a tested cylinder core sample;
the clamping device comprises two clamping plates, two ends of each clamping plate are bent to form lug parts, holes are formed in the lug parts in a penetrating mode, arc-shaped clamping surfaces are machined on the inner sides of the clamping plates, a cylinder is arranged between the lug parts of the two clamping plates, bolts are welded to the outer walls of the cylinder, and nuts are matched after the bolts penetrate through the holes; a connecting rod is processed between the two columns, and a pull rod matched with the stretching equipment is arranged at the middle position of the connecting rod.
Preferably, a plurality of V-shaped clamping teeth are arranged at the bottom of the clamping surface; after the two clamping plates are locked, the clamping teeth are partially embedded into the outer wall of the concrete cylinder core sample, and the anti-skidding effect is achieved.
Preferably, a plurality of annular anti-slip grooves are processed on the surface of the pull rod; the antiskid groove is mainly for the convenience of cooperating tensile testing machine's jack catch, and the stable cooperation is avoided skidding between the jack catch of being convenient for and the pull rod.
Preferably, a rod piece is arranged on the end face of the clamping plate, a guard plate is assembled between the two clamping devices, the guard plate is provided with a strip-shaped groove for penetrating through the rod piece, and a limit nut is screwed into the rod piece.
Preferably, the guard plate is made of transparent acrylic material; the arrangement of the guard plate mainly prevents the fragments generated when the sample is broken from flying outwards, thereby achieving the effect of safety protection. And the transparent guard plate is adopted, so that the structural change of the sample in a stretching state can be observed conveniently.
Preferably, the radian of the clamping surface is 1/5-1 pi.
The clamping mode of the product is as follows:
firstly, the surface of a sample is observed, whether obvious cracks exist on the surface of the sample is observed, and when the cracks exist, the positions of the cracks need to be left on the outer sides of two clamping devices, so that the condition that the test is inaccurate due to the existence of the cracks in the tensile test is avoided.
Secondly, the two clamping plates are adopted for clamping, the clamping requirements of samples with different diameters can be met, the two clamping plates are tightened by utilizing the downward rotation of the nut, the clamping of the samples is realized by utilizing the two clamping plates,
when the nut is screwed in, a torque wrench can be adopted, and when the rotating torque is large enough, the nut is prevented from being screwed in again.
Then, the tension rods at both ends are respectively matched with both ends of the tensile testing machine, and then tensile force is applied. And ending the test until the sample is pulled apart.
To improve the accuracy of the test, we need to validate more than 3 samples.
The utility model has the advantages that: this product can carry out the centre gripping to the sample of different diameters, and after the centre gripping, can assemble with tensile testing machine and carry out tensile test. The centre gripping mode of this product is comparatively simple, and the structure of this product is comparatively simple, and the cost is comparatively cheap, is fit for using widely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a clamping device;
FIG. 3 is a cross-sectional view of the clamping plate;
FIG. 4 is a schematic structural view of a clamping plate;
fig. 5 is a schematic view of the clamping of the product.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The ultimate tensile test device for the concrete cylinder core sample as shown in fig. 1 to 5 comprises two clamping devices 1 which are clamped at two ends of the tested cylinder core sample;
the clamping device 1 comprises two clamping plates 101, two ends of each clamping plate 101 are bent to form lug parts 102, holes 103 are arranged on the lug parts 102 in a penetrating mode, arc-shaped clamping surfaces 104 are machined on the inner sides of the clamping plates 101, a column body 2 is arranged between the lug parts 102 of the two clamping plates 101, bolts 201 are welded on the outer wall of the column body 2, and nuts 202 are matched after the bolts 201 penetrate through the holes 103; a connecting rod 3 is processed between the two columns 2, and a pull rod 301 matched with a stretching device is arranged at the middle position of the connecting rod 3.
In a preferred embodiment of the present invention, a plurality of V-shaped latches 111 are disposed at the bottom of the clamping surface 104; after the two clamping plates are locked, the clamping teeth are partially embedded into the outer wall of the concrete cylinder core sample, and the anti-skidding effect is achieved.
In a preferred embodiment of the present invention, a plurality of annular anti-slip grooves 311 are formed on the surface of the pull rod 301; the antiskid groove is mainly for the convenience of cooperating tensile testing machine's jack catch, and the stable cooperation is avoided skidding between the jack catch of being convenient for and the pull rod.
In a preferred embodiment of the present invention, a rod member 121 is disposed on an end surface of the clamping plate 101, a guard plate 131 is assembled between the two clamping devices 1, the guard plate 131 has a strip-shaped groove 141 for passing through the rod member 121, and a limit nut 151 is screwed into the rod member 121; the limiting nut 151 only has a limiting effect on the guard plate 131, and the guard plate 131 is prevented from falling outwards.
In a preferred embodiment of the present invention, the guard plate 131 is made of transparent acrylic material; the arrangement of the guard plate mainly prevents the fragments generated when the sample is broken from flying outwards, thereby achieving the effect of safety protection. And the transparent guard plate is adopted, so that the structural change of the sample in a stretching state can be observed conveniently.
In a preferred embodiment of the present invention, the radian of the clamping surface 104 is 1/4 pi.
The clamping mode of the product is as follows:
firstly, the surface of a sample is observed, whether obvious cracks exist on the surface of the sample is observed, and when the cracks exist, the positions of the cracks need to be left on the outer sides of two clamping devices, so that the condition that the test is inaccurate due to the existence of the cracks in the tensile test is avoided.
Secondly, the two clamping plates are adopted for clamping, the clamping requirements of samples with different diameters can be met, the two clamping plates are tightened by utilizing the downward rotation of the nut, the clamping of the samples is realized by utilizing the two clamping plates,
when the nut is screwed in, a torque wrench can be adopted, and when the rotating torque is large enough, the nut is prevented from being screwed in again.
Then, the tension rods at both ends are respectively matched with both ends of the tensile testing machine, and then tensile force is applied. And ending the test until the sample is pulled apart.
To improve the accuracy of the test, we need to validate more than 3 samples.
The utility model has the advantages that: this product can carry out the centre gripping to the sample of different diameters, and after the centre gripping, can assemble with tensile testing machine and carry out tensile test. The centre gripping mode of this product is comparatively simple, and the structure of this product is comparatively simple, and the cost is comparatively cheap, is fit for using widely.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (6)
1. The utility model provides a concrete cylinder core appearance limit tensile test device which characterized in that: comprises two clamping devices which are clamped at two ends of a tested cylindrical core sample;
the clamping device comprises two clamping plates, two ends of each clamping plate are bent to form lug parts, holes are formed in the lug parts in a penetrating mode, arc-shaped clamping surfaces are machined on the inner sides of the clamping plates, a cylinder is arranged between the lug parts of the two clamping plates, bolts are welded to the outer walls of the cylinder, and nuts are matched after the bolts penetrate through the holes; a connecting rod is processed between the two columns, and a pull rod matched with the stretching equipment is arranged at the middle position of the connecting rod.
2. The concrete cylinder core sample limit tension test apparatus of claim 1, wherein: and a plurality of V-shaped clamping teeth are arranged at the bottom of the clamping surface.
3. The concrete cylinder core sample limit tension test apparatus of claim 1, wherein: the surface of the pull rod is provided with a plurality of annular anti-slip grooves.
4. The concrete cylinder core sample limit tension test apparatus of claim 1, wherein: the end face of each clamping plate is provided with a rod piece, a guard plate is assembled between the two clamping devices, the guard plate is provided with a strip-shaped groove for penetrating through the rod piece, and a limit nut is screwed into the rod piece.
5. The concrete cylinder core sample limit tension test apparatus of claim 4, wherein: the guard plate is made of transparent acrylic materials.
6. The concrete cylinder core sample limit tension test apparatus of claim 1, wherein: the radian of the clamping surface is 1/5-1 pi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020305642.3U CN211927522U (en) | 2020-03-13 | 2020-03-13 | Concrete cylinder core appearance limit tensile test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020305642.3U CN211927522U (en) | 2020-03-13 | 2020-03-13 | Concrete cylinder core appearance limit tensile test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211927522U true CN211927522U (en) | 2020-11-13 |
Family
ID=73347866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020305642.3U Active CN211927522U (en) | 2020-03-13 | 2020-03-13 | Concrete cylinder core appearance limit tensile test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211927522U (en) |
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2020
- 2020-03-13 CN CN202020305642.3U patent/CN211927522U/en active Active
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