Improved geogrid tensile strength detection device

Abstract

An improved geogrid anti-drawing strength detection device comprises a vertical frame and a fixing unit arranged on the vertical frame, a detection unit is further arranged on one side of the fixing unit, the fixing unit comprises two fixing parts which are oppositely arranged up and down, at least one fixing part is movably arranged up and down, and each fixing part comprises a barrel which is through up and down; a bottom plate is vertically movably arranged in the cylinders, the bottom plate is in transmission connection with a driving machine, the two cylinders can move to be buckled and complete the containing work of a soil body sample, a notch is formed in the side, close to the detection unit, of at least one cylinder, and one end of a geogrid can be placed in the position between the two cylinders; the two bottom plates can apply pressure to the soil body samples in the cylinders under the action of the two driving machines, so that the soil body samples in the two cylinders are uniformly stressed, the situation that the geogrid is bent due to non-uniform pressure is avoided, the tensile strength of the geogrid is improved, and the service life of the geogrid is prolonged. And the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to an improved geogrid tensile strength testing device. Background Art

[0002] Geogrid is a major geosynthetic material, commonly used as reinforcement for reinforced soil structures or reinforcement for composite materials. The application document with application number CN202220327570.1 in the patent library discloses a geogrid pull-out test device, including a placement component, a vertical load application component and a horizontal load application component. The placement component includes two boxes for holding soil samples. The geogrid can be placed in the box and complete the tensile strength test through the horizontal load application component. At the same time, it is also provided with a vertical load application component for adding vertical load to the soil sample. However, since the vertical load application component is located above the box, it can only apply downward pressure to the soil sample. In this case, the soil sample in the upper box is more susceptible to pressure settlement. At this time, the geogrid between the two boxes is easily bent and deformed due to unilateral extrusion, affecting the test results of the tensile strength test. Utility Model Content

[0003] In order to solve the technical problems existing in the above background technology, the utility model provides an improved geogrid tensile strength testing device.

[0004] The technical solution of this utility model is as follows:

[0005] An improved geogrid tensile strength testing device includes a stand and a fixing unit arranged thereon. A detection unit is also provided on one side of the fixing unit. The fixing unit can be used to place soil samples and fix the geogrid, and the detection unit can be used to test the tensile strength of the geogrid.

[0006] As the core technical concept of the present invention, the fixed unit includes two fixed parts arranged opposite to each other in an upper and lower direction, and at least one fixed part is movably arranged in an upper and lower direction, the fixed part includes a cylinder that passes through the upper and lower parts, and the cylinders of the two fixed parts can be moved to interlock with each other, and a bottom plate is provided in the cylinder that can move up and down, and the bottom plate is transmission-connected to a driving machine, and a side of the upper end of the lower cylinder close to the detection unit, and / or a side of the lower end of the upper cylinder close to the detection unit is provided with a notch for the geogrid to pass through, and the detection unit is configured to clamp the geogrid and complete the tensile strength test, and the interior of the two interlocking cylinders can hold soil samples, one end of the geogrid can be placed inside the two cylinders, and the other end passes through the notch. When performing the tensile strength test, the bottom plates of the two fixed parts can apply pressure to the soil samples in the cylinders, so as to ensure that the soil samples in the two cylinders are evenly stressed, avoid bending of the geogrid due to uneven pressure, and ensure the accuracy of the test results.

[0007] As described above, an improved geogrid tensile strength testing device, in order to ensure that the movement of the two base plates does not affect the fastening state of the two cylinders, the testing device (the above-mentioned improved geogrid tensile strength testing device) also includes a clamping unit, which is configured to be able to clamp and fix the two cylinders when the two cylinders are in a tight state.

[0008] As a preferred embodiment, the stand includes a support plate and a pillar vertically arranged on its upper side, the upper fixed part is vertically slidably arranged on the pillar, and a stop button is provided in the middle of the pillar. Through this arrangement, when the upper fixed part is located above the stop button, the soil sample in the cylinder of the lower fixed part can be added. After the addition is completed, by pressing the stop button, the cylinder of the upper fixed part can slide down to engage with the cylinder of the lower fixed part, so that the detection work can be carried out more conveniently.

[0009] In order to ensure the sliding stability of the upper fixing part and ensure that the two fixing part cylinders can be smoothly buckled, at least three pillars are provided.

[0010] In order to ensure the blocking effect of the stop button on the upper fixed part, stop buttons are provided on several of the pillars, and the stop buttons are arranged at the same height.

[0011] As a further preference, the cylinder of the fixed part below is a first cylinder, which is fixed on the pillar below the stop button, and the minimum distance between the upper end and the stop button is 15 cm, so as to ensure that the addition of soil samples in the first cylinder can be carried out more conveniently.

[0012] More preferably, there is a gap between the lower end of the first cylinder and the support plate, and the gap is not less than 2 / 3 of the height of the first cylinder, so as to ensure that the setting of the lower fixed part driving machine can be more convenient, and at the same time make the maintenance work of the lower fixed part driving machine more convenient.

[0013] As described above, in an improved geogrid tensile strength testing device, the cylinder and bottom plate of the upper fixed part are respectively the second cylinder and the second bottom plate. In order to make it easier to add soil samples into the second cylinder after the two cylinders are buckled together, the second bottom plate is configured to be able to rise to separate from the second cylinder under the drive of a driving motor.

[0014] Furthermore, the stand also includes a vertical plate arranged vertically on one side of the upper part of the support plate, and the detection unit is arranged on the vertical plate. In order to ensure the stability of the detection unit during the detection process, prevent the vertical plate from being deformed during the tensile strength test, affect the tensile strength test effect, and ensure that the pulling force of the detection unit remains horizontal, a reinforcement plate is provided between the vertical plate and the support plate.

[0015] In the improved geogrid tensile strength testing device described above, in order to more conveniently control the displacement of the two bottom plates and thus the pressure on the soil samples in the two cylinders, the driving machine adopts a linear motor.

[0016] The beneficial effects of the present invention are as follows: the present invention is an improved geogrid tensile strength testing device, the cylinders of the two fixed parts can be moved to interlock and merge to complete the placement of soil samples, one end of the geogrid can be placed inside between the two cylinders, and the other end can pass through the gap. When performing the tensile strength test, the two bottom plates can apply pressure to the soil samples in the cylinders under the action of the two driving motors, so as to ensure that the soil samples in the two cylinders are evenly stressed, avoid bending of the geogrid due to uneven pressure, and ensure the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limiting the present invention.

[0018] In the attached figure:

[0019] Figure 1 Schematic diagram of the structure of the detection device in the embodiment;

[0020] Figure 2 for Figure 1 The main view;

[0021] Figure 3It is a structural diagram of the stand in the embodiment;

[0022] Figure 4 This is a schematic structural diagram of the first fixing portion in the embodiment;

[0023] Figure 5 is a schematic structural diagram of the second fixing portion in the embodiment;

[0024] Figure 6 Schematic diagram of the coordination structure of two fixing parts in the embodiment;

[0025] The components represented by the reference numerals in the figure are:

[0026] 1. Stand; 11. Support plate; 12. Pillar; 13. Stop button; 14. Stand; 15. Reinforcement plate; 2. Fixing unit; 21. First fixing part; 211. First cylinder; 212. First extension edge; 213. First bottom plate; 214. First driving motor; 22. Second fixing part; 221. Second cylinder; 222. Second extension edge; 223. Second bottom plate; 224. Second driving motor; 225. Sleeve; 226. Top plate; 227. Mounting cylinder; 3. Detection unit; 31. Third driving motor; 32. Clamping member. DETAILED DESCRIPTION

[0027] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0028] Example: This example provides an improved geogrid tensile strength testing device, see Figure 1 and Figure 2 , including a stand 1 and a fixing unit 2 arranged thereon, and a detection unit 3 is also provided on one side of the fixing unit 2. The fixing unit 2 can be used to complete the placement of soil samples and the fixation of the geogrid, and the detection unit 3 can be used to complete the tensile strength detection of the geogrid. The structure of the detection device (the above-mentioned improved geogrid tensile strength detection device) is described in detail below.

[0029] In this embodiment, combined with Figure 3 The stand 1 includes a horizontally arranged support plate 11, a pillar 12 is vertically provided on the upper side of the support plate 11, and the fixing unit 2 is arranged on the pillar 12; the stand 1 also includes a vertical plate 14 provided on the upper part of one side of the support plate 11, and the detection unit 3 is arranged on the vertical plate 14. In order to ensure the stability of the detection unit 3 during the detection process, prevent the vertical plate 14 from being deformed during the tensile strength test, affect the tensile strength test effect, and ensure that the pulling force of the detection unit 3 remains in a horizontal state, a reinforcing plate 15 is also provided between the vertical plate 14 and the support plate 11.

[0030] In this embodiment, the detection unit 3 includes a third driving motor 31 arranged horizontally on the vertical plate 14, and a clamping member 32 is provided at the transmission end thereof through a tension sensor (not shown), and can be fixed to the geogrid through the clamping member 32. Then, through the pulling action of the third driving motor 31 and the feedback value of the tension sensor, the tensile strength detection of the geogrid is completed.

[0031] In this embodiment, as the core technical concept of the present invention, the fixing unit 2 includes two fixing parts arranged opposite to each other in the upper and lower parts, and at least one fixing part is arranged to be movable up and down, the fixing part includes a cylinder that passes through the upper and lower parts, and the cylinders of the two fixing parts can be moved to fit together, and a bottom plate is provided in the cylinder that can move up and down, and the bottom plate is connected to a driving machine, and the upper end of the lower cylinder is close to the side of the detection unit 3, and / or the lower end of the upper cylinder is close to the side of the detection unit 3. A notch is provided for the geogrid to pass through, and the detection unit 3 is configured to be able to clamp the geogrid and complete the tensile strength. In the testing work, the two interlocking cylinders can hold soil samples, one end of the geogrid can be placed inside the two cylinders, and the other end passes through the notch. When conducting the tensile strength test, the bottom plates of the two fixed parts can apply pressure to the soil samples in the cylinders, so as to ensure that the soil samples in the two cylinders are evenly stressed, avoid bending of the geogrid due to uneven pressure, and ensure the accuracy of the test results. At the same time, by controlling the action of the two driving motors, the tensile strength test of the geogrid under different pressure environments can also be simulated, which significantly improves the practicability of the testing device.

[0032] As one of the implementation modes, in this embodiment, the fixing part at the bottom is the first fixing part 21, which is fixed, and the fixing part at the top is the second fixing part 22, which is movable up and down, that is, the second fixing part 22 is vertically slidably set on the pillar 12. In order to ensure the sliding stability of the upper fixing part and ensure that the cylinders of the two fixing parts can be smoothly buckled, the pillar 12 is provided with at least three.

[0033] Combine Figure 5 and Figure 6 Specifically, with regard to the structure and setting of the second fixing part 22, there are four pillars 12 located in a rectangular array on the upper side of the support plate 11. The cylinder corresponding to the second fixing part 22 is the second cylinder 221. The second cylinder 221 is a vertically arranged cylindrical structure that passes through from top to bottom, and its cross-section is square. The outer circle of the lower end of the second cylinder 221 is provided with a second extended edge 222 that protrudes outward. Four sleeves 225 are vertically provided on the upper side of the second extended edge 222 corresponding to the four pillars 12, and are vertically slidably connected to the four pillars 12 through the four sleeves 225.

[0034] Combine Figure 4 and Figure 6Specifically speaking, with regard to the structure and setting of the first fixing portion 21, its corresponding cylinder is the first cylinder 211. The first cylinder 211 is a vertically arranged cylindrical structure that passes through from top to bottom, and its cross-section is a square structure that cooperates with the second cylinder 221. The outer circle of the upper end of the first cylinder 211 is provided with a first extended edge 212 that protrudes outward, and is fixedly connected to the four pillars 12 through the first extended edge 212.

[0035] Based on the above structure, the second cylinder 221 can be engaged with or separated from the first cylinder 211 by moving the second cylinder 221 up and down.

[0036] Furthermore, a stop button 13 is provided in the middle of the pillar 12 and between the first cylinder 211 and the second cylinder 221. Through this arrangement, when the sleeve 225 of the second fixing part 22 is located above the stop button 13, the addition of the soil sample in the first cylinder 211 of the first fixing part 21 can be completed. After the addition is completed, by pressing the stop button 13, the second cylinder 221 of the second fixing part 22 can slide down to engage with the first cylinder 211 of the first fixing part 21, so that the detection work can be carried out more conveniently.

[0037] In order to ensure the blocking effect of the stop button 13 on the second fixing portion 22 , the stop buttons 13 are each provided on the plurality of pillars 12 , and the plurality of stop buttons 13 are arranged at the same height.

[0038] As a preferred embodiment, the first cylinder 211 of the first fixing part 21 is fixedly set on the pillar 12 below the stop button 13, and the vertical distance between the upper end and the horizontal plane where the stop button 13 is located is at least 15 cm, so as to ensure that the addition of soil samples in the first cylinder 211 can be carried out more conveniently.

[0039] In this embodiment, the bottom plate and driving machine corresponding to the second fixing portion 22 are respectively the second bottom plate 223 and the second driving machine 224 , and the bottom plate and driving machine corresponding to the first fixing portion 21 are respectively the first bottom plate 213 and the first driving machine 214 .

[0040] Regarding the arrangement of the first driving machine 214 , the first base plate 213 is disposed in the first cylinder 211 , and the first driving machine 214 is located on the support plate 11 below the first base plate 213 and can drive the first base plate 213 to rise and fall.

[0041] As a preferred embodiment, there is a gap between the lower end of the first cylinder 211 and the support plate 11, that is, the first cylinder 211 is floating relative to the support plate 11, and the gap between the lower end of the first cylinder 211 and the upper side of the support plate 11 is not less than 2 / 3 of the height of the first cylinder 211, so as to ensure that the setting of the first drive motor 214 can be more convenient, and at the same time make the maintenance work of the first drive motor 214 more convenient.

[0042] As for the setting method of the second driving motor 224, a top plate 226 is horizontally provided at the upper end of several of the sleeves 225, the second bottom plate 223 is arranged in the second cylinder 221, and the second driving motor 224 is located on the top plate 226 on the upper side of the second bottom plate 223, and can drive the second bottom plate 223 to rise and fall.

[0043] As a preferred embodiment, in order to make it easier to add soil samples into the second cylinder 221 after the two cylinders are buckled together, the second bottom plate 223 is configured to be able to rise and separate from the second cylinder 221 under the drive of the driving motor.

[0044] Specifically, there is a gap between the top plate 226 and the upper end of the second cylinder 221. An opening is provided in the middle of the top plate 226, and a mounting cylinder 227 is vertically provided on the upper side of the opening. The second driving motor 224 is provided in the mounting cylinder 227, and the transmission end passes downward through the opening and is connected to the second bottom plate 223.

[0045] In order to facilitate the installation of the second driving engine 224 and the maintenance of the second driving engine 224, one side of the installation cylinder 227 is designed to be open.

[0046] As a further preferred embodiment based on the above structure, in order to more conveniently control the displacement of the two bottom plates and thereby more conveniently control the pressure on the soil samples in the two cylinders, the first driving motor 214 and the second driving motor 224 both use linear motors.

[0047] In this embodiment, to ensure that the movement of the two base plates does not affect the fastening state of the two cylinders, the detection device further includes a clamping unit (not shown), which is configured to clamp and fix the two cylinders when they are in a tight contact state.

[0048] Specifically, the clamping unit includes a U-shaped block, and the opening width thereof is the same as the thickness of the first extension edge 212 and the second extension edge 222 on the two cylinders. That is, after the two cylinders are buckled together, the U-shaped block can be clamped outside the first extension edge 212 and the second extension edge 222 to complete the fixing of the two cylinders, and it is simpler and more convenient to use.

[0049] In this embodiment, in order to make the technical solution of this application clearer, one of the ways to use the detection device is:

[0050] 1) Ensure that the second fixing portion 22 is separated from the first fixing portion 21 under the action of the stop button 13, adjust the heights of the first bottom plate 213 and the second bottom plate 223, and separate the second bottom plate 223 from the second cylinder 221;

[0051] 2) Add soil sample into the first cylinder 211, level it and then place the geogrid in it;

[0052] 3) Press the stop button 13 to make the second fixing part 22 fall down, the second cylinder 221 is engaged with the first cylinder 211, and the clamping unit is installed;

[0053] 4) Add soil samples into the second cylinder 221 and perform leveling;

[0054] 5) Fix the geogrid to the detection unit 3;

[0055] 6) By controlling the movement of the first driving motor 214 and the second driving motor 224, the first bottom plate 213 and the second bottom plate 223 apply pressure to the soil sample in the cylinder, and by controlling the displacement of the two driving motors, the force on the soil samples in the two cylinders is controlled to be relatively uniform;

[0056] 7) Complete the tensile strength test of the geogrid through the detection unit 3.

Claims

1. An improved geogrid tensile strength testing device, characterized in that: It comprises a stand (1) and a fixing unit (2) arranged thereon, wherein a detection unit (3) is further provided on one side of the fixing unit (2); The fixing unit (2) comprises two fixing parts arranged opposite to each other in an upper and lower direction, and at least one fixing part is arranged to be movable up and down, the fixing part comprises a cylinder that passes through the cylinder, a bottom plate is arranged in the cylinder so as to be movable up and down, and the bottom plate is connected to a driving machine in a transmission manner; A side of the upper end of the lower cylinder close to the detection unit (3), and / or a side of the lower end of the upper cylinder close to the detection unit (3) are provided with a notch capable of allowing the geogrid to pass through, and the detection unit (3) is configured to be able to clamp the geogrid and complete the tensile strength detection work.

2. The improved geogrid tensile strength testing device according to claim 1, characterized in that: It also includes a clamping unit, which is configured to clamp and fix the two cylinders when the two cylinders are in a pressed state.

3. The improved geogrid tensile strength testing device according to claim 2, characterized in that: The stand (1) comprises a support plate (11) and a support column (12) vertically arranged on its upper side, and the upper fixing portion is vertically slidably arranged on the support column (12); A stop button (13) is provided in the middle of the pillar (12).

4. The improved geogrid tensile strength testing device according to claim 3, characterized in that: There are at least three pillars (12).

5. The improved geogrid tensile strength testing device according to claim 4, characterized in that: A stop button (13) is provided on each of the pillars (12), and the stop buttons (13) are arranged at the same height.

6. The improved geogrid tensile strength testing device according to claim 5, characterized in that: The cylinder of the fixing portion below is a first cylinder (211), which is fixedly arranged on the pillar (12) below the stop button (13), and the distance between the upper end and the stop button (13) is at least 15 cm.

7. The improved geogrid tensile strength testing device according to claim 6, characterized in that: There is a gap between the lower end of the first cylinder (211) and the supporting plate (11), and the gap is not less than 2 / 3 of the height of the first cylinder (211).

8. The improved geogrid tensile strength testing device according to claim 2, characterized in that: The cylinder and the bottom plate of the upper fixing portion are respectively the second cylinder (221) and the second bottom plate (223), and the second bottom plate (223) is configured to be able to rise to be separated from the second cylinder (221) under the drive of a driving machine.

9. The improved geogrid tensile strength testing device according to claim 3, characterized in that: The stand (1) further comprises a stand plate (14) vertically arranged on one side of the upper portion of the support plate (11), and the detection unit (3) is arranged on the stand plate (14); A reinforcing plate (15) is provided between the vertical plate (14) and the supporting plate (11).

10. The improved geogrid tensile strength testing device according to claim 1, characterized in that: The driving machine is a linear motor.

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