Large-deformation geotechnical sample tensile test device

Abstract

The technical scheme of the utility model discloses a large-deformation geotechnical sample tensile test device which is characterized in that the large-deformation geotechnical sample tensile test device comprises a vertical stand column which is vertically arranged and a pair of clamping assemblies which are connected to the vertical stand column, clamping heads are arranged at the tail ends of the clamping assemblies, and each clamping head comprises a first base which is connected with the corresponding clamping assembly; the first high-strength magnet is arranged in the first base; a second base; the second high-strength magnet is arranged in the second base and is magnetically connected with the first high-strength magnet, and the geotechnical sample is clamped between the first high-strength magnet and the second high-strength magnet. According to the tensile testing device for the large-deformation geotechnical test sample, the test sample is clamped by adopting magnetic force, the two high-strength magnets clamp the test sample in the test sample testing process, the clamping force is about 5-8N, and the clamping force is kept variable in the tensile process, so that the stress area of the test sample and the chuck is not changed, the friction force is not changed, slipping is avoided, and the clamping is reliable; in the sample stretching process, the clamping part of the chuck is constant, the chuck does not slide, and the test is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical specimen testing technology, and in particular to a tensile testing device for large deformation geotechnical specimens. Background Technology

[0002] Geotechnical specimens are commonly used materials in the engineering industry, primarily in the construction sector, and are essential for testing the overall tensile and tensile physical properties of these materials. However, traditional geotechnical specimen testing equipment, when dealing with large geotechnical specimens, suffers from inadequate structural design, resulting in insufficient clamping force of the grippers. This can easily lead to slippage or detachment of the grippers from the specimen, causing test interruptions or inaccurate results. Utility Model Content

[0003] The technical problem solved by this invention is that traditional geotechnical sample testing equipment, when the geotechnical sample size is large, suffers from insufficient clamping force due to inadequate structural design, which easily leads to slippage and detachment of the clamp from the sample, resulting in test interruption or inaccurate test results.

[0004] To solve the above-mentioned technical problems, this utility model provides a tensile testing device for large deformation geotechnical specimens, comprising a vertically arranged column and a pair of clamping assemblies connected to the vertical column. Each clamping assembly has a clamping head at its end, and the clamping head includes:

[0005] The first base is connected to the clamping assembly;

[0006] A first high-strength magnet is disposed in the first base;

[0007] Second base;

[0008] A second high-strength magnet is disposed in the second base and is magnetically connected to the first high-strength magnet. The geotechnical sample is clamped between the first high-strength magnet and the second high-strength magnet.

[0009] Optionally, the two clamping components are respectively connected to the upper and lower positions of the vertical column for clamping the geotechnical sample, and the two clamping components are kept parallel and installed in the same direction.

[0010] Optionally, each of the clamping components includes:

[0011] An annular clamp is connected to the vertical column;

[0012] A horizontal arm, connected to the annular clamp, has one end close to the vertical column and the other end extending away from the annular clamp and the vertical column; and

[0013] The clamping head, connected to the outwardly extending end of the horizontal arm, is used to clamp the geotechnical sample.

[0014] Optionally, the annular clamp is connected to an external testing device.

[0015] Optionally, the annular clamp has an annular mounting opening and a slit, and the annular clamp has a mounting hole at the slit.

[0016] Optionally, the annular clamp is securely fixed to the external test equipment by inserting and tightening a fastener into the mounting hole to close the notch.

[0017] Optionally, the end of the horizontal arm is provided with a connecting rod, the connecting rod has a positioning hole, and the end of the connecting rod is provided with an external thread.

[0018] Optionally, the first base has an insertion hole, a connection hole, and a loading hole, wherein the connection hole corresponds to the position of the positioning hole when the connecting rod and the first base are connected, and the connecting rod and the first base are connected by inserting fasteners into the positioning hole and the connection hole.

[0019] Optionally, the first high-strength magnet has a threaded hole, and after the first high-strength magnet is inserted into the loading hole, it is connected to the connecting rod by screwing the threaded hole and the external thread of the connecting rod.

[0020] Optionally, both the first high-strength magnet and the second high-strength magnet are cylindrical structures with the same diameter.

[0021] The beneficial effects of this utility model's technical solution are:

[0022] This utility model of a large deformation geotechnical specimen tensile testing device uses magnetic clamping to hold the specimen. During the test, two high-strength magnets clamp the specimen with a clamping force of approximately 5-8N. The clamping force remains constant during the tensile process, ensuring that the force-bearing area between the specimen and the clamp remains constant, the friction remains constant, and there is no slippage. The clamping is reliable, and the clamping part of the clamp remains constant during the specimen tensile process, preventing the clamp from slipping and making the test more accurate. Attached Figure Description

[0023] Figure 1 This is a perspective view of the tensile testing device for large deformation geotechnical specimens in this embodiment of the present invention.

[0024] Figure 2 This is a cross-sectional view of the tensile testing device for large deformation geotechnical specimens in an embodiment of this utility model. Detailed implementation method:

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] Please see Figure 1 and Figure 2The diagram illustrates an embodiment of a tensile testing device for large deformation geotechnical specimens. It includes a vertically arranged column 1 and a pair of clamping assemblies 2 connected to the column 1. Each clamping assembly 2 has a clamping head 3 at its end. The clamping head 3 includes a first base 31 connected to the clamping assembly; a first high-strength magnet 32 ​​disposed in the first base 31; a second base 33; and a second high-strength magnet 34 disposed in the second base 33 and magnetically connected to the first high-strength magnet 32. The geotechnical specimen is clamped between the first high-strength magnet 32 ​​and the second high-strength magnet 34.

[0031] In this embodiment, the two clamping components 2 are respectively connected to the upper and lower positions of the vertical column 1 to clamp the geotechnical sample, and the two clamping components are kept parallel and installed in the same direction.

[0032] In this embodiment, each clamping assembly 2 includes an annular clamping seat 21 connected to the vertical column 1; a horizontal arm 22 connected to the annular clamping seat 21, with one end close to the vertical column 1 and the other end extending away from the annular clamping seat 21 and the vertical column 1; and a clamping head 3 connected to the outwardly extending end of the horizontal arm 22 for clamping the geotechnical sample.

[0033] In this embodiment, the annular clamp 21 is connected to an external testing device.

[0034] In this embodiment, the annular clamp 21 has an annular mounting opening 211 and a cut 212, and the annular clamp 21 is provided with a mounting hole 213 at the cut 212.

[0035] In this embodiment, the annular clamp 21 is securely fixed to the external test equipment by inserting and tightening a fastener into the mounting hole 213 to close the cut 212.

[0036] In this embodiment, the end of the horizontal arm 22 is provided with a connecting rod 221, the connecting rod 221 has a positioning hole 2211, and the end of the connecting rod 221 is provided with an external thread.

[0037] In this embodiment, the first base 31 has an insertion hole 311, a connection hole 313 and a loading hole 312. The connection hole 313 corresponds to the position of the positioning hole 2211 when the connecting rod 221 and the first base 31 are connected through the insertion hole 311. The connecting rod 221 and the first base 31 are connected by inserting fasteners into the positioning hole 2211 and the connection hole 313.

[0038] In this embodiment, the first high-strength magnet 32 ​​has a threaded hole. After the first high-strength magnet 32 ​​is inserted into the loading hole 312, it is connected to the connecting rod 221 by screwing the threaded hole and the external thread of the connecting rod 221.

[0039] In this embodiment, both the first high-strength magnet 32 ​​and the second high-strength magnet 34 are cylindrical structures with the same diameter.

[0040] The following description will further illustrate the characteristics and functions of this utility model.

[0041] This embodiment describes a tensile testing clamp for large deformation geotechnical specimens. The clamp is used to test the tensile displacement of a 200mm wide geotechnical specimen. The clamp consists of two high-strength magnets on either side of the specimen, held between them by magnetic force. After clamping, the testing machine is started to perform the test. The method is convenient, yields good results, produces an ideal fracture location, and is easy to operate.

[0042] The testing equipment in this embodiment uses magnetic clamping to hold the sample. During the test, two high-strength magnets clamp the sample with a clamping force of approximately 5-8N. The clamping force remains constant during the stretching process, ensuring that the force-bearing area between the sample and the clamp remains unchanged, the friction remains constant, there is no slippage, the clamping is reliable, and the sample is not easy to break at the clamping part of the clamp or to fall out of the clamp.

[0043] The geotechnical specimen has a large clamping area, and the clamps will not shear the specimen and break it. At the same time, the specimen will not slip or fall out of the clamps, resulting in good test results.

[0044] In summary, the large deformation geotechnical specimen tensile testing device of this invention employs magnetic clamping of the specimen. During the test, two high-strength magnets clamp the specimen with a clamping force of approximately 5-8 N. This clamping force remains constant throughout the tensile process, ensuring a constant force-bearing area and friction between the specimen and the clamps, preventing slippage and ensuring reliable clamping. The clamping force remains constant throughout the tensile process, preventing slippage and resulting in more accurate testing. The use of magnetic clamping makes operation more convenient; the constant magnetic clamping force prevents slippage of the geotechnical specimen during testing.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensile testing device for large deformation geotechnical specimens, characterized in that, It includes a vertically arranged column and a pair of clamping assemblies connected to the vertical column. Each clamping assembly has a clamping head at its end, and the clamping head includes: The first base is connected to the clamping assembly; A first high-strength magnet is disposed in the first base; Second base; A second high-strength magnet is disposed in the second base and is magnetically connected to the first high-strength magnet. The geotechnical sample is clamped between the first high-strength magnet and the second high-strength magnet.

2. The large deformation geotechnical specimen tensile testing device according to claim 1, characterized in that, The two clamping components are respectively connected to the upper and lower positions of the vertical column for clamping the geotechnical sample, and the two clamping components are kept parallel and installed in the same direction.

3. The large deformation geotechnical specimen tensile testing device according to claim 2, characterized in that, Each of the clamping components includes: An annular clamp is connected to the vertical column; A horizontal arm is connected to the annular clamp, with one end close to the vertical column and the other end extending away from the annular clamp and the vertical column; as well as The clamping head, connected to the outwardly extending end of the horizontal arm, is used to clamp the geotechnical sample.

4. The large deformation geotechnical specimen tensile testing device according to claim 3, characterized in that, The annular clamp is connected to an external testing device.

5. The large deformation geotechnical specimen tensile testing device according to claim 4, characterized in that, The annular clamp has an annular mounting opening and a slit, and the annular clamp has a mounting hole at the slit.

6. The large deformation geotechnical specimen tensile testing device according to claim 5, characterized in that, The annular clamp is securely fixed to the external test equipment by inserting and tightening a fastener into the mounting hole to close the notch.

7. The large deformation geotechnical specimen tensile testing device according to claim 6, characterized in that, The horizontal arm has a connecting rod at its end, the connecting rod has a positioning hole, and the end of the connecting rod has an external thread.

8. The large deformation geotechnical specimen tensile testing device according to claim 7, characterized in that, The first base has an insertion hole, a connection hole, and a loading hole. The connection hole corresponds to the position of the positioning hole when the connecting rod and the first base are connected. The connecting rod and the first base are connected by inserting fasteners into the positioning hole and the connection hole.

9. The large deformation geotechnical specimen tensile testing device according to claim 8, characterized in that, The first high-strength magnet has a threaded hole. After the first high-strength magnet is inserted into the loading hole, it is connected to the connecting rod through the threaded hole and the external thread of the connecting rod.

10. The large deformation geotechnical specimen tensile testing device according to claim 9, characterized in that, Both the first high-strength magnet and the second high-strength magnet are cylindrical structures with the same diameter.

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