A geotextile puncture test fixture

Abstract

This utility model relates to the field of geotextile testing fixtures and provides a geotextile puncture testing fixture, including a support platform; a guide rod and a mounting base are installed on the top of the support platform, and a guide rod that can slide up and down is sleeved on the guide rod; a pressure block is installed on the top of the guide rod; the mounting base has a first mounting hole, and a limiting ring is sleeved inside the first mounting hole; a friction pad is installed on the top of the mounting base; both the limiting ring and the friction pad have reserved holes; a sleeve is installed on the outside of the mounting base by threaded engagement, and the top of the sleeve has a hole; a puncture head is installed at the bottom of the pressure block, and a pressure sensor is installed on the top of the pressure block. Therefore, this device can easily fix geotextile samples, the pressure sensor provides accurate pressure data, and the detachable connection of each component facilitates maintenance and replacement, greatly improving the accuracy and convenience of the test.

Description

Technical Field

[0001] This utility model applies to the field of fabric testing fixtures and provides a geotextile puncture testing fixture. Background Technology

[0002] Geotextiles are materials made of woven or non-woven synthetic fibers, possessing certain strength, permeability, and tensile strength. They are widely used in engineering construction, particularly in civil engineering, environmental engineering, and water conservancy projects. The main uses of geotextiles include soil reinforcement, drainage, filtration, and isolation, and they are commonly used in the construction of roadbeds, dams, subbases, and drainage systems. Based on their manufacturing process, geotextiles can be classified into several types, including woven geotextiles, non-woven geotextiles, and composite geotextiles, each with different characteristics and applicable scenarios.

[0003] The performance parameters of geotextiles directly affect their performance. Common parameters include tensile strength, elongation, puncture strength, permeability, and UV resistance. Different batches of geotextiles may exhibit variations during production; therefore, each batch requires individual puncture tests and other performance assessments. Rigorous parameter testing ensures that the geotextile meets engineering requirements, guaranteeing the safety and stability of the project and preventing potential problems caused by geotextile quality issues.

[0004] Currently, puncture tests on geotextiles typically require first fixing and stretching the geotextile to ensure a flat test surface before applying pressure for puncture. This testing process demands precise fixation of the geotextile by the operator to prevent wrinkles or loosening that could affect the test results. However, fixing the geotextile is usually cumbersome and time-consuming, requiring certain skills and patience, making it unsuitable for quick and efficient testing.

[0005] Therefore, existing testing methods have certain inconveniences in practical applications, and there is an urgent need for a simpler and faster puncture testing fixture to improve testing efficiency and accuracy. Utility Model Content

[0006] To address the aforementioned deficiencies, the present invention aims to provide a geotextile puncture testing fixture, which is intended to solve the problems mentioned in the background art. The device includes a support platform; a guide rod and a mounting base are installed on the top of the support platform, and a guide rod that can slide up and down is sleeved on the guide rod; a pressure block is installed on the top of the guide rod.

[0007] The mounting base is provided with a first mounting hole, and a limiting ring is fitted inside the first mounting hole. A friction pad is installed on the top of the mounting base; both the limiting ring and the friction pad are provided with reserved holes.

[0008] The mounting base is fitted with a sleeve via a threaded connection, and the top of the sleeve has a hole; a puncture head is installed at the bottom of the pressure block, and a pressure sensor is installed at the top of the pressure block.

[0009] Furthermore, there are multiple guide rods and guide bars, and each guide rod and guide bar is arranged in a one-to-one correspondence; the guide rods and guide bars together play a guiding role.

[0010] Furthermore, the outer ring side of the mounting base is provided with a first threaded portion, and the inner ring side of the sleeve is provided with a second threaded portion that mates with the first threaded portion. The mounting base and the sleeve are connected by threads through the first threaded portion and the second threaded portion.

[0011] Furthermore, the top of the friction pad and the corresponding surface inside the housing are both provided with rough surfaces.

[0012] Furthermore, the top of the mounting base is provided with several second mounting holes, and the bottom of the friction pad is fixedly connected with several positioning rods corresponding to the second mounting holes.

[0013] Furthermore, a puncture head fixing block is detachably installed at the bottom of the pressure block by fixing bolts, and a pre-reserved hole is provided at the bottom of the puncture head fixing block; the puncture head is installed between the puncture head fixing block and the pressure block, and its front end spiked part protrudes through the puncture head fixing block.

[0014] Furthermore, the casing is provided with a rod mounting hole, and a metal rod can be detachably connected to the rod mounting hole.

[0015] This invention enhances the fixation of geotextile samples by utilizing the rough surfaces of the friction pad and the casing. The pressure sensor provides accurate pressure data, and the detachable connection of each component facilitates maintenance and replacement, greatly improving the accuracy and convenience of the test. Furthermore, since the limiting ring and puncture head can be of different models, various testing conditions can be adapted by replacing the limiting ring with different inner diameters and the puncture head with different models. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device structure;

[0017] Figure 2 This is an exploded view of the device from a first-person perspective.

[0018] Figure 3 This is an exploded view of the device from a second-person perspective.

[0019] Figure 4 This is a side sectional view of the exploded structure of the device;

[0020] In the diagram: 1-support; 2-mounting base; 201-first threaded part; 21-first mounting hole; 22-second mounting hole; 23-guide rod; 3-restriction ring; 4-sleeve; 401-second threaded part; 42-insertion rod mounting hole; 5-pressure block; 51-guide rod; 6-piercing head; 7-pressure sensor; 8-friction pad; 81-positioning rod; 9-piercing head fixing block; 91-fixing bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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 do not 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. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0025] See Figure 1-4The purpose of this utility model is to provide a geotextile puncture testing fixture, including a support platform 1 at the bottom; the support platform 1 can be installed on a test table, or the support platform 1 itself can be used as a table. A guide rod 23 is installed on the top of the support platform 1, and a guide rod 51 that can slide up and down is sleeved on the guide rod 23; a pressure block 5 is fixedly connected to the top of the guide rod 51. Specifically, there are several guide rods 23 and guide rods 5, and the guide rods 23 and guide rods 5 are arranged in a one-to-one correspondence; the guide rods 23 and guide rods 5 together play a guiding role. Thus, the pressure block 5 can move up and down at a certain distance from the top of the support platform 1 under the drive of external equipment.

[0026] A mounting base 2 is fixedly connected to the top of the support platform 1. The middle part of the mounting base 2 has a first mounting hole 21 that opens upwards. A limiting ring 3 is fitted inside the first mounting hole 21. The top of the limiting ring 3 has a pre-drilled hole that runs vertically through the surface. The inner diameter of the pre-drilled hole can be selected according to the actual test conditions. Specifically, the limiting ring 3 can have different models, and the inner diameter of different models of limiting ring 3 is different, which can match geotextiles of different thicknesses. In other words, the inner diameter of the pre-drilled hole can be selected according to the thickness of the geotextile to conduct puncture tests with the most suitable hole size.

[0027] The top of the mounting base 2 is detachably connected to a friction pad 8; the top of the friction pad 8 is also provided with a reserved hole. Preferably, the size of the reserved hole on the top of the friction pad 8 is the same as the size of the reserved hole on the top of the limiting ring 3.

[0028] The mounting base 2 is fitted with a sleeve 4 via a threaded connection, and the top of the sleeve 4 has a hole. Specifically, the outer ring of the mounting base 2 has a first threaded portion 201, and the inner ring of the sleeve 4 has a second threaded portion 401 that mates with the first threaded portion 201. The mounting base 2 and the sleeve 4 are connected by threads through the first threaded portion 201 and the second threaded portion 401.

[0029] A piercing head 6 is fixedly connected to the bottom of the pressure block 5, and a pressure sensor 7 is installed on the top of the pressure block 5. The pressure sensor 7 is electrically connected to an external detection device. In terms of force transmission, the output end of the external pressure-applying device presses downward on the pressure sensor 7, which in turn presses downward on the pressure block 5. The piercing head 6 at the bottom of the pressure block 5 pierces the geotextile fixed on the mounting base 2, thus obtaining a graph of the pressure value change throughout the process, and thereby analyzing the maximum pressure value when the geotextile is punctured. It is worth noting that since the pressure sensor 7, the pressure block 5, and the piercing head themselves have a certain mass, the obtained data needs further processing to determine the true maximum withstand pressure at the time of puncture.

[0030] Based on the above technical solution, before conducting the puncture test on the geotextile, the geotextile sample and the device must first be assembled. The specific assembly process is as follows: select a suitable limiting ring 3 and install it inside the first mounting hole 21. After installing the friction pad 8 on the top of the mounting base 2, lay the wrinkle-free geotextile sample disc on the top of the friction pad 8.

[0031] Subsequently, the sleeve 4 is fitted onto the mounting base 2. At this point, the bottom of the sleeve 4 folds down the excess fabric of the geotextile sample, existing between the inner ring of the sleeve 4 and the outer ring of the mounting base 2. It is worth noting that, as shown in the attached... Figure 2 As shown, the first threaded portion 201 on the mounting base 2 is located near the bottom of the outer ring side, and the outer diameter of the first threaded portion 201 is larger than the outer diameter of the mounting base 2 itself. This ensures that the geotextile sample can be folded between the inner ring side of the sleeve 4 and the outer ring side of the mounting base 2. During the tightening process of the sleeve 4, the top of the sleeve 4 presses down on the geotextile sample; due to the compression of the friction pad 8 and the sleeve 4, the geotextile sample is firmly fixed on this fixture. The installation of the geotextile is thus completed.

[0032] During the puncture test, the support platform 1 is placed at the bottom of the output end of the mechanical device with a pressing function, and then the pressure block 5 is combined with the mounting base 2. The mechanical device with the pressing function can be a hydraulic cylinder, a pneumatic cylinder, or similar device. At this time, the guide rod 51 and the guide rod 23 need to be connected one-to-one. The output end of the mechanical device with the pressing function presses down, and the puncture head continuously compresses the geotextile sample at the position corresponding to the inner diameter of the limiting ring 3, eventually puncturing the geotextile. Thus, the pressure sensor 7 obtains the pressure change curve of the entire process, and after further processing, the final maximum puncture pressure data can be obtained.

[0033] Preferably, the top of the friction pad 8 and the corresponding surface inside the housing 4 that corresponds to the friction pad 8 are both provided with rough surfaces.

[0034] Preferably, a puncture head fixing block 9 is detachably mounted on the bottom of the pressure block 5 via a fixing bolt 91. The bottom of the puncture head fixing block 9 has a pre-drilled hole, the size of which matches the size of the front end of the puncture head 6. The puncture head 6 can be installed between the puncture head fixing block 9 and the pressure block 5, with the pointed tip of the puncture head 6 protruding from the puncture head fixing block 9 to ensure normal puncture use. Thus, the puncture head 6 is detachably connected to the pressure block 5. The puncture head 6 can be equipped with different sizes and models, allowing for the selection of different models of puncture heads 6 for installation under different testing conditions, thus satisfying the versatility of experiments.

[0035] Preferably, the housing 4 is provided with a rod mounting hole 42, which can be used to insert a metal rod for tightening the housing 4 with less effort. Specifically, the rod mounting hole 42 and the metal rod can be plugged into each other.

[0036] Preferably, the top of the mounting base 2 is provided with a plurality of second mounting holes 22, and the bottom of the friction pad 8 is fixedly connected with a plurality of positioning rods 81 corresponding to the second mounting holes 22. The positioning rods 81 can be inserted into the second mounting holes 22 to realize the positioning and installation of the friction pad 8 on the top of the mounting base 2.

[0037] In summary, in practical use, firstly, a suitable inner diameter limiting ring 3 is selected according to the testing requirements and installed in the first mounting hole 21 of the mounting base 2. The friction pad 8 is then positioned and installed on top of the mounting base 2 through the engagement of the positioning rod 81 and the second mounting hole 22. Next, the geotextile sample is laid flat on the friction pad 8 and connected to the first threaded portion 201 and the second threaded portion 401 of the mounting base 2 via the sleeve 4. This process folds the edges of the geotextile sample downwards. Then, the support platform 1 is placed below the output end of the external pressing device, aligning the piercing head 6 with the pre-drilled hole of the limiting ring 3. The external device's pressing block 5 is activated, and the piercing head 6 pierces the geotextile sample. The pressure sensor 7 monitors the pressure changes in real time and transmits the data to the external testing device, thereby obtaining the pressure curve during the piercing process.

[0038] Therefore, this device enhances the fixation of geotextile samples by utilizing the rough surfaces of the friction pad 8 and the housing 4. The pressure sensor 7 provides accurate pressure data, and the detachable connection of each component facilitates maintenance and replacement, greatly improving the accuracy and convenience of the test. Furthermore, since the limiting ring 3 and the puncture head can be of different models, various test conditions can be adapted by replacing the limiting ring 3 with different inner diameters and the puncture head 6 with different models.

[0039] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A geotextile puncture test tool, characterized by, Includes a support platform (1); the top of the support platform (1) is equipped with a guide rod (23) and a mounting base (2), and a guide rod (51) that can slide up and down is sleeved on the guide rod (23); a pressure block (5) is installed on the top of the guide rod (51); The mounting base (2) is provided with a first mounting hole (21), and a limiting ring (3) is fitted inside the first mounting hole (21). A friction pad (8) is installed on the top of the mounting base (2). Both the limiting ring (3) and the friction pad (8) are provided with reserved holes. The mounting base (2) is fitted with a sleeve (4) by threaded connection, and the top of the sleeve (4) is provided with a hole; the bottom of the pressure block (5) is fitted with a piercing head (6), and the top of the pressure block (5) is fitted with a pressure sensor (7).

2. The geotextile puncture test fixture of claim 1, wherein, There are several guide rods (23) and guide rods (51), and the guide rods (23) and guide rods (51) are arranged in a one-to-one correspondence; the guide rods (23) and guide rods (51) together play a guiding role.

3. The geotextile puncture test fixture according to claim 1, characterized in that, The outer ring side of the mounting base (2) is provided with a first threaded part (201), and the inner ring side of the sleeve (4) is provided with a second threaded part (401) that cooperates with the first threaded part (201). The mounting base (2) and the sleeve (4) are connected by threads through the first threaded part (201) and the second threaded part (401).

4. The geotextile puncture test fixture according to claim 1, characterized in that, The top of the friction pad (8) and the corresponding surfaces inside the housing (4) are both provided with rough surfaces.

5. The geotextile puncture test fixture according to claim 1, characterized in that, The top of the mounting base (2) is provided with several second mounting holes (22), and the bottom of the friction pad (8) is fixedly connected with several positioning rods (81) corresponding to the second mounting holes (22).

6. The geotextile puncture test fixture according to claim 1, characterized in that, The bottom of the pressure block (5) is detachably mounted with a puncture head fixing block (9) by a fixing bolt (91), and the bottom of the puncture head fixing block (9) is provided with a reserved hole; the puncture head (6) is installed between the puncture head fixing block (9) and the pressure block (5), and its front end spiked part protrudes from the puncture head fixing block (9).

7. The geotextile puncture test fixture according to claim 1, characterized in that, The casing (4) is provided with a rod mounting hole (42), and a metal rod can be detachably connected to the rod mounting hole (42).

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