A geomembrane defect detection rod for cover heavy conditions

Abstract

This utility model discloses a geomembrane defect detection rod under heavy load conditions, comprising a left L-shaped telescopic rod, a right L-shaped telescopic rod, a left T-shaped telescopic rod, and a right T-shaped telescopic rod. One end of the left and right L-shaped telescopic rods is hinged via a first short connecting shaft. The bottom of the left L-shaped telescopic rod is hinged to the left T-shaped telescopic rod, and the bottom of the right L-shaped telescopic rod is hinged to the right T-shaped telescopic rod via a second short connecting shaft. The bottom of the left and right T-shaped telescopic rods is hinged to the bottom of the left and right T-shaped telescopic rods via a third short connecting shaft. A steel rod clamp is fixed to the outer end of both the T-shaped and right T-shaped telescopic rods, and a steel rod is fixed to the steel rod clamp. This utility model's detection rod can realize geomembrane defect detection under heavy load conditions. It modifies the traditional DC resistance dipole device, allowing for free movement of the electrodes, thus enabling geomembrane defect detection under heavy load conditions.

Description

Technical Field

[0001] This utility model relates to the field of geomembrane defect detection technology, specifically to a geomembrane defect detection rod for use under load conditions. Background Technology

[0002] Geomembrane is a new type of seepage-proof material made from high molecular polymers. It has advantages such as strong deformation capacity, good seepage-proof performance, and low economic cost, and is widely used as seepage-proof material for hydraulic structures such as reservoirs, water storage tanks, and canals.

[0003] After the geomembrane is laid, it needs to be covered with a compacted layer of sand or gravel as a protective layer. During the compaction of this protective layer using heavy machinery, the underlying covering material can easily damage the geomembrane, affecting its waterproofing performance. For defect detection of geomembranes under covered conditions, a dual-electrode method is generally used. This method involves applying an electric field to the geomembrane and moving a detection device to locate defects based on the potential distribution within the protective layer. During detection, a power supply electrode is placed in both the upper and lower layers of the geomembrane, connected to the positive and negative terminals of a high-voltage DC power supply. Normally, when the geomembrane is intact, no circuit can be formed between the power supply electrodes. When there is a hole in the geomembrane, the defect provides a path, generating current in the circuit. In this case, the defect acts as a current source, and a significant anomaly in the potential field near the defect will appear. Therefore, the anomaly in the potential field on the membrane can be detected by moving a detection device to locate the hole. Existing mobile detection devices typically consist of a fixed support and receiving electrodes M and N at the bottom of the support. Data acquisition is achieved by moving the receiving electrodes M and N at the bottom of the device. However, these existing devices cannot be folded up, making them extremely inconvenient to carry. Furthermore, their large size limits efficiency during continuous testing. Therefore, to address these issues, it is necessary to propose a more efficient and portable device for detecting defects in geomembranes under heavy loads. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a geomembrane defect detection rod for use under load conditions.

[0005] To achieve the aforementioned objectives, the technical solution adopted by this invention is as follows: It includes a left L-shaped telescopic rod, a right L-shaped telescopic rod, a left T-shaped telescopic rod, and a right T-shaped telescopic rod; one end of the left L-shaped telescopic rod and the right L-shaped telescopic rod are hinged together by a first short connecting shaft; the bottom of the left L-shaped telescopic rod and the left T-shaped telescopic rod, as well as the bottom of the right L-shaped telescopic rod and the right T-shaped telescopic rod, are hinged together by a second short connecting shaft; the bottom of the left T-shaped telescopic rod and the bottom of the right T-shaped telescopic rod are hinged together by a third short connecting shaft; the left L-shaped telescopic rod, the right L-shaped telescopic rod, the right T-shaped telescopic rod, and the left T-shaped telescopic rod are connected end-to-end to form a rectangular frame structure; a steel rod clamp is fixed to the outer end of both the left T-shaped telescopic rod and the outer end of the right T-shaped telescopic rod; the steel rod clamp has a vertical through hole, and a steel rod is fixed in each vertical through hole; the vertical through hole and the steel rod are insulated; and the steel rod is electrically connected to a detection line.

[0006] Furthermore, the first short connecting shaft, the second short connecting shaft, and the third short connecting shaft have the same structure. The first short connecting shaft includes a hinge body and two U-shaped hinge interfaces. The two U-shaped hinge interfaces are fixed at both ends of the hinge body. The hinge ends of the left L-shaped telescopic rod, the right L-shaped telescopic rod, the left T-shaped telescopic rod, and the right T-shaped telescopic rod are all provided with hinge parts that cooperate with the U-shaped hinge interfaces. A hinge shaft is provided through the U-shaped hinge interfaces and the hinge parts.

[0007] Furthermore, a third telescopic rod is provided at the outer end of both the left T-shaped telescopic rod and the outer end of the right T-shaped telescopic rod, and the steel rod clamp is fixed to the telescopic end with the third telescopic rod.

[0008] Furthermore, the cross-section of the third telescopic rod is circular, elliptical, or rectangular.

[0009] Furthermore, both the lateral hinge ends of the left L-shaped telescopic rod and the right L-shaped telescopic rod are fixedly connected to a first telescopic rod, and the telescopic end of the first telescopic rod is hinged to a first short connecting shaft; both the lateral hinge ends of the left T-shaped telescopic rod and the right T-shaped telescopic rod are fixedly connected to a second telescopic rod, and the second telescopic rod is hinged to a third short connecting shaft.

[0010] Furthermore, the cross-sections of both the first and second telescopic rods are circular, elliptical, or rectangular.

[0011] Furthermore, a rubber ring is fixed inside the vertical through hole, and the inner diameter of the rubber ring is interference-fitted with the outer diameter of the steel rod.

[0012] Furthermore, the steel chisel clamp is made of insulated plastic.

[0013] Furthermore, a conical section is provided at the bottom of the steel rod, and a disc is provided at the top of the steel rod.

[0014] Furthermore, the left L-shaped telescopic pole, right L-shaped telescopic pole, left T-shaped telescopic pole, and right T-shaped telescopic pole are all made of aluminum alloy.

[0015] The beneficial effects of this utility model are as follows:

[0016] The left L-shaped telescopic rod, right L-shaped telescopic rod, left T-shaped telescopic rod, and right T-shaped telescopic rod of this utility model are hinged together by a first short connecting shaft, a second short connecting shaft, and a short connecting shaft. They are easy to unfold and use, and the detection rod can be folded for storage, making the detection rod more convenient to carry.

[0017] The outer ends of the T-shaped telescopic rod and the outer ends of the right T-shaped telescopic rod of this utility model are provided with a third telescopic rod. The lateral hinge ends of the left L-shaped telescopic rod and the right L-shaped telescopic rod are fixedly connected with a first telescopic rod. The lateral hinge ends of the left T-shaped telescopic rod and the right T-shaped telescopic rod are fixedly connected with a second telescopic rod, so that the detection rod has a better shrinkage volume.

[0018] The detection rod of this utility model includes two retractable steel rods, which form a set of receiving electrodes M and N, enabling the detection of electrical signals in two directions at the detection position.

[0019] The detection rod of this invention can detect defects in geomembranes under load. It modifies the traditional DC resistance dipole device, allowing the electrodes to move freely, thus enabling the detection of defects in geomembranes under load.

[0020] The detection rod of this invention eliminates the need for wire laying, electrode insertion, and electrode replacement, greatly improving detection efficiency. At the same time, compared with the traditional DC resistivity method detection device, one person can complete all the detection work, reducing labor intensity and greatly improving detection efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 The working principle of this utility model Figure 1 ;

[0023] Figure 3 The working principle of this utility model Figure 2 ;

[0024] Figure 4 The working principle of this utility model Figure 3 ;

[0025] Figure 5 The working principle of this utility model Figure 4 ;

[0026] Figure 6 The working principle of this utility model Figure 5 ;

[0027] The symbols for each component are as follows:

[0028] 1. Left L-shaped telescopic rod; 2. Right L-shaped telescopic rod; 3. Left T-shaped telescopic rod; 4. Right T-shaped telescopic rod; 5. First short connecting shaft; 6. Second short connecting shaft; 7. Third short connecting shaft; 8. Steel chisel clamp; 9. Steel chisel; 10. First telescopic rod; 11. Second telescopic rod; 12. Third telescopic rod. Detailed Implementation

[0029] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0030] like Figure 1 As shown, the geomembrane defect detection rod for use under load includes a left L-shaped telescopic rod 1, a right L-shaped telescopic rod 2, a left T-shaped telescopic rod 3, and a right T-shaped telescopic rod 4. The left L-shaped telescopic rod 1, the right L-shaped telescopic rod 2, the left T-shaped telescopic rod 3, and the right T-shaped telescopic rod 4 are all preferably made of aluminum alloy. Aluminum alloy is lightweight, which makes it easy to carry the detection rod. At the same time, aluminum alloy has good structural strength. The left L-shaped telescopic rod 1 and the right L-shaped telescopic rod 2 are hinged at one end by the first short connecting shaft 5. The bottom of the left L-shaped telescopic rod 1 and the left T-shaped telescopic rod 3, and the bottom of the right L-shaped telescopic rod 2 and the right T-shaped telescopic rod 4 are both hinged by the second short connecting shaft 6. The bottom of the left T-shaped telescopic rod 3 and the bottom of the right T-shaped telescopic rod 4 are hinged by the third short connecting shaft 7. The left L-shaped telescopic rod 1, the right L-shaped telescopic rod 2, the right T-shaped telescopic rod 4 and the left T-shaped telescopic rod 3 are connected end to end to form a rectangular frame structure. The outer ends of the left T-shaped telescopic rod 3 and the outer ends of the right T-shaped telescopic rod 4 are both fixed with steel rod clamps 8. The steel rod clamps 8 are provided with vertical through holes. The steel rod 9 is insulated from the vertical through holes. A steel rod 9 is fixed in each vertical through hole. The vertical through holes and the steel rod 9 are insulated from each other. The steel rod 9 is electrically connected to a detection line. The detection line works with the steel rod 9 to collect signals. A conical part is provided at the bottom of the steel rod 9, which makes it easy to insert the steel rod 9 into the soil. A disc is provided at the top of the steel rod 9, which is used to increase the force-bearing area of ​​the steel rod 9 and facilitate the hammering of the steel rod 9.

[0031] The first short connecting shaft 5, the second short connecting shaft 6, and the third short connecting shaft 7 have the same structure. The first short connecting shaft 5 includes a hinge body and two U-shaped hinge interfaces. The two U-shaped hinge interfaces are fixed at both ends of the hinge body. The hinge ends of the left L-shaped telescopic rod 1, the right L-shaped telescopic rod 2, the left T-shaped telescopic rod 3, and the right T-shaped telescopic rod 4 are all provided with hinge parts that cooperate with the U-shaped hinge interfaces. A hinge shaft is provided through the U-shaped hinge interfaces and the hinge parts. A circular rubber gasket is provided between the U-shaped hinge interfaces and the hinge parts. By utilizing the friction between the circular rubber gasket and the U-shaped hinge interfaces and the hinge parts, the first short connecting shaft 5, the second short connecting shaft 6, and the third short connecting shaft 7 can achieve friction clamping without the action of external force, thereby fixing the position of the left L-shaped telescopic rod 1, the right L-shaped telescopic rod 2, the left T-shaped telescopic rod 3, and the right T-shaped telescopic rod 4 under normal conditions.

[0032] A third telescopic rod 12 is provided at the outer end of both the left T-shaped telescopic rod 3 and the right T-shaped telescopic rod 4, and a steel rod clamp 8 is fixed to the telescopic end with the third telescopic rod 12. A first telescopic rod 10 is fixedly connected to the transverse hinge end of both the left L-shaped telescopic rod 1 and the right L-shaped telescopic rod 2, and the telescopic end of the first telescopic rod 10 is hinged to the first short connecting shaft 5. A second telescopic rod 11 is fixedly connected to the transverse hinge end of both the left T-shaped telescopic rod 3 and the right T-shaped telescopic rod 4, and the second telescopic rod 11 is hinged to the third short connecting shaft 7. The cross-sections of the first telescopic rod 10, the second telescopic rod 11, and the third telescopic rod 12 are preferably circular.

[0033] In this embodiment, the cross-sections of the first telescopic rod 10, the second telescopic rod 11, and the third telescopic rod 12 are preferably elliptical or rectangular. Elliptical or rectangular cross-sections of the telescopic rods provide better guidance, and the telescopic cylinders of the rods do not rotate relative to each other. This structural characteristic ensures that the third short connecting shaft, the steel rod clamp, and the steel rod do not rotate, allowing for better inspection of the steel rod.

[0034] A rubber ring is fixed inside the vertical through hole. The inner diameter of the rubber ring is interference-fitted with the outer diameter of the steel rod 9. The rubber ring allows the steel rod 9 to be easily fixed to the steel rod clamp. The rubber ring fixes the steel rod 9 through friction. At the same time, when the steel rod 9 is hammered into the soil, the rubber ring will not affect the movement of the steel rod 9. The steel rod clamp 8 is made of insulating plastic to prevent the steel rod 9 from being affected when collecting electrical signals.

[0035] The detection principle of this utility model is as follows: S1: Determine the detection range and detection parameters according to the detection purpose; S2: The detection personnel adjust the transmitter parameters and knock the transmitting electrode A and electrode B into the fixed position; S3: The detection personnel first install and unfold the multi-directional detection rod, and then move the detection rod to the detection area for detection; S4: After the detection is completed, the detection personnel can turn off the transmitter.

[0036] Storage process of the detection rod: Step S1, as follows Figure 2 Flip the two steel rods 9 upwards 180° and lock them; Step S2, as follows Figure 3 Move the two third telescopic rods 12 so that the two steel rods 9 are close to the left T-shaped telescopic rod 3 and the right T-shaped telescopic rod 4; step S3, as follows Figure 3 The two first telescopic rods 10 and the two second telescopic rods 11 are accommodated, so that the left L-shaped telescopic rod 1 and the right L-shaped telescopic rod 2 are brought together, and the left T-shaped telescopic rod 3 and the right T-shaped telescopic rod 4 are brought together; Step S4, as follows Figure 5 Through two second short connecting shafts 6, the left L-shaped telescopic rod 1 and the right L-shaped telescopic rod 2 are folded downwards by 180°, so that the left L-shaped telescopic rod 1 is in contact with the left T-shaped telescopic rod 3, and the right L-shaped telescopic rod 2 is in contact with the right T-shaped telescopic rod; step S5, as Figure 6 By using the first short connecting shaft 5 and the third short connecting shaft 7, the right L-shaped telescopic rod 2 is folded 180° to the right, so that the right L-shaped telescopic rod 2 fits against the left L-shaped telescopic rod 1, thus storing the detection rod. When it needs to be unfolded for use, it can be unfolded in the reverse order of steps S5, S4, S3, S2, and S1.

Claims

1. A geomembrane defect detection rod for use under cover weight conditions, characterized in that, Including the left L-shaped telescopic pole (1), the right L-shaped telescopic pole (2), the left T-shaped telescopic pole (3) and the right T-shaped telescopic pole (4); The left L-shaped telescopic rod (1) and the right L-shaped telescopic rod (2) are hinged at one end by the first short connecting shaft (5). The bottom of the left L-shaped telescopic rod (1) is hinged to the left T-shaped telescopic rod (3), and the bottom of the right L-shaped telescopic rod (2) is hinged to the right T-shaped telescopic rod (4) by the second short connecting shaft (6). The bottom of the left T-shaped telescopic rod (3) and the bottom of the right T-shaped telescopic rod (4) are hinged by the third short connecting shaft (7). The left L-shaped telescopic rod (1), right L-shaped telescopic rod (2), right T-shaped telescopic rod (4) and left T-shaped telescopic rod (3) are connected end to end to form a rectangular frame structure; Steel rod clamps (8) are fixed to the outer ends of the left T-shaped telescopic rod (3) and the right T-shaped telescopic rod (4). The steel rod clamps (8) are provided with vertical through holes. A steel rod (9) is fixed in each vertical through hole. The vertical through holes and the steel rod (9) are insulated from each other. The steel rod (9) is electrically connected to a detection line.

2. The geomembrane defect detection rod under load conditions according to claim 1, characterized in that, The first short connecting shaft (5), the second short connecting shaft (6) and the third short connecting shaft (7) have the same structure. The first short connecting shaft (5) includes a hinge body and two U-shaped hinge interfaces. The two U-shaped hinge interfaces are fixed at both ends of the hinge body. The hinge ends of the left L-shaped telescopic rod (1), the right L-shaped telescopic rod (2), the left T-shaped telescopic rod (3) and the right T-shaped telescopic rod (4) are all provided with hinge parts that cooperate with the U-shaped hinge interfaces. A hinge shaft is provided through the U-shaped hinge interface and the hinge part.

3. The geomembrane defect detection rod for cover load conditions according to claim 2, characterized in that, A circular rubber gasket is provided between the U-shaped hinge interface and the hinge part.

4. The geomembrane defect detection rod for cover load conditions according to claim 1, characterized in that, The outer ends of the left T-shaped telescopic rod (3) and the outer ends of the right T-shaped telescopic rod (4) are each provided with a third telescopic rod (12), and the steel rod clamp (8) is fixed to the telescopic end with the third telescopic rod (12).

5. The geomembrane defect detection rod for cover load conditions according to claim 4, characterized in that, The cross-section of the third telescopic rod (12) is circular, elliptical, or rectangular.

6. The geomembrane defect detection rod for cover load conditions according to claim 4, characterized in that, The left L-shaped telescopic rod (1) and the right L-shaped telescopic rod (2) are both fixedly connected to a first telescopic rod (10), and the telescopic end of the first telescopic rod (10) is hinged to the first short connecting shaft (5); the left T-shaped telescopic rod (3) and the right T-shaped telescopic rod (4) are both fixedly connected to a second telescopic rod (11), and the second telescopic rod (11) is hinged to the third short connecting shaft (7).

7. The geomembrane defect detection rod under overburden conditions according to claim 6, characterized in that, The cross-sections of the first telescopic rod (10) and the second telescopic rod (11) are both circular, elliptical or rectangular.

8. The geomembrane defect detection rod according to claim 1, characterized in that, A rubber ring is fixed inside the vertical through hole, and the inner diameter of the rubber ring is interference-fitted with the outer diameter of the steel rod (9).

9. The geomembrane defect detection rod under load conditions according to claim 1, characterized in that, The steel rod clamp (8) is made of insulating plastic.

10. The geomembrane defect detection rod for cover load conditions according to claim 1, characterized in that, The left L-shaped telescopic rod (1), right L-shaped telescopic rod (2), left T-shaped telescopic rod (3) and right T-shaped telescopic rod (4) are all made of aluminum alloy.

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