Intelligent tension monitoring ground anchor device and use method thereof

Abstract

The invention discloses an intelligent tension monitoring ground anchor device and a using method thereof, and belongs to the technical field of power grid construction engineering safety. The stress end of the tension sensor is connected with the second end of the ground anchor pull rod through a connecting rod; the first end of the fixer is slidably connected with the connecting rod, and the second end of the fixer is connected with the upper end of the shell of the tension sensor; the first end of the ground anchor is connected with the first end of the fixer through a plurality of supporting rods; the first end of the displacement sensor is rotationally connected with the second end of the ground anchor; the signal box is rotationally connected with the second end of the displacement sensor, the tension sensor and the displacement sensor are both electrically connected with the signal box, and the signal box is in signal connection with external monitoring equipment. According to the invention, the stress state of the ground anchor buried in the soil can be monitored in real time, the stress condition of the ground anchor in use can be better detected, safety detection is facilitated, and the device has an important value for improving the intrinsic safety of power construction.

Description

Technical Field

[0001] The present invention belongs to the technical field of grid construction engineering safety, and particularly relates to an intelligent tension monitoring ground anchor device and its usage method. Background Art

[0002] With the acceleration of the urbanization process, the stability and safety of construction projects have become increasingly important. Although traditional ground anchors can provide stability to a certain extent, they have certain limitations. Traditional ground anchors do not have monitoring capabilities. Since they are buried deep underground during use, it is impossible to timely understand the stress state of the ground anchor, which limits the evaluation and early warning of the stability of the ground anchor.

[0003] In recent years, significant progress has been made in the research and application of intelligent ground anchors, mainly focusing on improving monitoring accuracy, enhancing environmental adaptability, and realizing real-time remote monitoring, etc. However, traditional intelligent devices usually rely on regular manual inspections and single-sensor monitoring technologies, and such ground anchors are not conducive to the improvement of the intelligence and safety of grid construction. Summary of the Invention

[0004] In order to solve the above problems, the present invention adopts the following technical solutions: An intelligent tension monitoring ground anchor device, comprising: A ground anchor rod, with a ground anchor interface provided at the first end of the ground anchor rod; A tension sensor, the stress end of the tension sensor is connected to the second end of the ground anchor rod through a connecting rod; A fixator, the first end of the fixator is slidably connected to the connecting rod, and the second end of the fixator is connected to the upper end of the housing of the tension sensor; A ground anchor, the first end of the ground anchor is connected to the first end of the fixator through multiple support rods; A displacement sensor, the first end of the displacement sensor is rotatably connected to the second end of the ground anchor; A signal box, the signal box is rotatably connected to the second end of the displacement sensor, the tension sensor and the displacement sensor are both electrically connected to the signal box, and the signal box is signal-connected to an external monitoring device.

[0005] Furthermore, it further includes an anti-interference magnetic ring, and the anti-interference magnetic ring is arranged on the ground anchor rod or the connecting rod.

[0006] Furthermore, the ground anchor is a pull plate type ground anchor.

[0007] Furthermore, the ground anchor is of a hollow structure and has an opening at the bottom.

[0008] Further, a cross bar is arranged inside the ground anchor, and a matching contact plate is connected at the opening; a long strip hole is arranged on the contact plate, and the first end of the displacement sensor passes through the long strip hole and is rotatably connected to the cross bar.

[0009] Further, it further includes a transmitting antenna, and the transmitting antenna is connected to the signal box.

[0010] Further, a support frame is arranged outside the signal box.

[0011] Further, a battery is installed inside the signal box.

[0012] A usage method of an intelligent tensile force monitoring ground anchor device, adopting the intelligent tensile force monitoring ground anchor device described in any one of the above, the method includes the following steps: S10. Preparation in the early stage: Ensure that the ground anchor, tensile force sensor, displacement sensor, signal box, battery, and antenna are intact, the tensile force sensor and displacement sensor are accurately calibrated, conduct on-site survey on the geological conditions of the ground anchor burial position, and measure the soil properties to determine the designed burial depth and installation angle of the ground anchor. S20. Installation and connection of on-site equipment: S30. Measurement of ground anchor force: Connect the tensile force sensor and displacement sensor to the control terminal, apply simulated tensile force under preset conditions, verify the accuracy of the tensile force sensor, record the tensile force value in real time and analyze the data change, and observe whether there are abnormal fluctuations.

[0013] Further, step S20 includes: S21. Ground anchor burial; Bury the ground anchor to the designed depth, connect the second end of the ground anchor tie rod to the anti-interference magnetic ring, and dock the force-receiving end with the tensile force sensor through the connecting rod. S22. Arrangement of tensile force sensor: Fix the tensile force sensor at the force-receiving point to ensure that there is no dirt on the surface of the sensor. S23. Connection of signal lines.

[0014] Beneficial effects

[0015] The present invention can monitor the stress state of the ground anchor buried in the soil in real time, solves the limitations of the traditional ground anchor device, and can better detect the stress condition of the ground anchor during use by using a pressure sensor, which is convenient for safety detection and has important value for improving the intrinsic safety of electric power construction. Description of the drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2Another perspective schematic diagram of the overall structure of the present invention; Figure 3 Schematic diagram of a partial bottom view of the present invention; Figure 4 Schematic diagram of a partial enlarged view of the present invention; Figure 5 Schematic diagram of the structure of a partial tension sensor of the present invention; Figure 6 Schematic diagram of the structure of a partial fixator of the present invention; Figure 7 Schematic diagram of the measurement flow chart of the present invention.

[0017] Among them, 1. Anchor interface; 2. Anchor tie rod; 3. Anti-interference magnetic ring; 4. Anchor; 5. Displacement sensor; 6. Signal box; 7. Transmitting antenna; 8. Support frame; 9. Tension sensor; 10. Connecting rod; 11. Fixator; 12. Support rod; 13. Contact plate; 14. Cross bar. Specific embodiments

[0018] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0019] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0020] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0023] Embodiment 1

[0024] Reference Figures 1 - 7 , an intelligent tensile force monitoring ground anchor device, comprising: A ground anchor tie rod 2, with a ground anchor interface 1 provided at the first end of the ground anchor tie rod 2; A tensile force sensor 9, the force-receiving end of the tensile force sensor 9 is fixedly connected to the second end of the ground anchor tie rod 2 through a connecting rod 10, and a through groove is provided at the upper end of the housing of the tensile force sensor 9; A fixator 11, the first end of the fixator 11 is slidably connected to the connecting rod 10, the second end of the fixator 11 is connected to the upper end of the housing of the tensile force sensor 9, the second end of the fixator is U-shaped, and the horizontal and vertical sections pass through the through groove and leave a certain gap with the upper and lower parts of the through groove; A ground anchor 4, the first end of the ground anchor 4 is fixedly connected to the first end of the fixator 11 through a plurality of support rods 12; A displacement sensor 5, the first end of the displacement sensor 5 is rotatably connected to the second end of the ground anchor 4; A signal box 6, the signal box 6 is rotatably connected to the second end of the displacement sensor 5, the tensile force sensor 9 and the displacement sensor 5 are both electrically connected to the signal box 6, and the signal box 6 is signal-connected to an external monitoring device.

[0025] During specific implementation, the ground anchor interface 1 is connected and fixed to the wire anchor line outside, the tensile force of the wire anchor line will be transmitted to the ground anchor 4 through the ground anchor tie rod 2, the ground anchor 4 is fixed by burying, the fixator 11 fixes the tensile force sensor 9 through the ground anchor 4, the tensile force sensor 9 is embedded in the fixator 11, when the tensile force is too large, the stressed part is the fixator 11, and it is transmitted to the ground anchor 4 through the support rod 12 to prevent damage to the tensile force sensor 9 caused by excessive tensile force, and then it is transmitted to the supervision device by the signal box 6 and the transmitting antenna 7 to measure the ground anchor force received.

[0026] In this embodiment, an anti-interference magnetic ring 3 is further included, and the anti-interference magnetic ring 3 is arranged on the ground anchor tie rod 2 or the connecting rod 10.

[0027] In other embodiments, the anti-interference magnetic ring 3 is arranged between the ground anchor tie rod 2 and the connecting rod 10, and the first end of the anti-interference magnetic ring 3 is connected to the second end of the ground anchor tie rod 2, and the second end is connected to the first end of the connecting rod 10.

[0028] In this embodiment, the ground anchor 4 is a pull plate type ground anchor.

[0029] In this embodiment, the ground anchor 4 has a hollow structure and an opening is provided at the bottom. A cross bar 14 is arranged inside the ground anchor 4, and a mating contact plate 13 is connected at the opening; a long hole is provided on the contact plate 13. The first end of the displacement sensor 5 passes through the long hole and is rotatably connected to the cross bar 14. A vertical rod is arranged at the center of the ground anchor 4 and is correspondingly arranged with the tension sensor 9. A gap is left between the top end of the vertical rod and the bottom end of the tension sensor 9; the vertical rod is a hollow rod and is communicated with the inside of the ground anchor 4.

[0030] In this embodiment, it further includes a transmitting antenna 7, and the transmitting antenna 7 is connected to the signal box 6.

[0031] Principle of measuring the ground anchor force: After the wire is connected to the ground anchor interface 1, the wire applies an upward force to the ground anchor tie rod 2, and the ground anchor tie rod 2 makes an upward displacement, so that a relative displacement occurs between the ground anchor 4 and the ground anchor tie rod 2. At this time, the tension sensor 9 receives the tension and the relative displacement provided by the tension, and then generates tension data inside the tension sensor 9. The tension sensor 9 works based on the strain resistance effect. When an external tension is generated, the ground anchor tie rod 2 drives the tension sensor 9, and the strain gauge, the core component inside it, deforms, thereby causing a change in resistance. After the resistance changes, the strain gauge outputs a voltage signal proportional to the tension. The obtained voltage signal passes through the signal amplifier inside the sensor (the signal amplifier amplifies the weak bridge output voltage and linearizes it), and is converted into a standard signal convenient for the signal box to collect, and finally is output in the form of a standard signal to the display device or data system), and is converted into a standard signal convenient for collection. Finally, the signal is transmitted to the supervision device through the transmitting antenna 7.

[0032] In this embodiment, for the data transmission of the measuring device, the ground anchor force measurement result is transmitted by the signal box 6. After the signal box 6 buried underground receives the standard signal from the tension sensor 9, in order to improve the signal penetration ability and anti-interference ability, the underground signal is usually modulated. After being modulated by the signal box 6, it is converted into a low-frequency electromagnetic wave (the low-frequency electromagnetic wave has strong soil penetration ability) and transmitted to the transmitting antenna 7. After receiving the electromagnetic wave signal transmitted from underground, the transmitting antenna 7 will convert the change of the electromagnetic wave into a change of current, generate an electric signal proportional to the original signal through the way of electromagnetic field coupling, couple the interaction of the electric field or magnetic field with the antenna on the ground, and then be received by the antenna on the ground, so as to transmit the underground signal to the ground monitoring device.

[0033] During specific implementation, the anti-interference magnetic ring 3 is used to ensure that the measurement information is not interfered by the harsh outdoor environment.

[0034] In this embodiment, a support frame 8 is arranged outside the signal box 6.

[0035] In this embodiment, a battery is installed inside the signal box 6.

[0036] The present invention can monitor the stress state of the ground anchor buried in the soil in real time, solve the limitations of the traditional ground anchor device, and use a pressure sensor to better detect the stress condition of the ground anchor during use, which is convenient for safety detection and has important value for improving the intrinsic safety of electric power construction.

[0037] Embodiment 2

[0038] A method for using the intelligent tensile force monitoring ground anchor device provided in this embodiment adopts the intelligent tensile force monitoring ground anchor device provided in Embodiment 1, and the method includes the following steps: S10. Preliminary preparation: Ensure that the ground anchor 4, the tensile force sensor 9, the displacement sensor 5, the signal box 6, the battery, and the antenna are intact, the tensile force sensor 9 and the displacement sensor 5 are accurately calibrated, conduct on-site survey and investigation on the geological conditions of the burial position of the ground anchor 4, and measure the soil properties (such as density, water content, etc.) to determine the designed burial depth of the ground anchor 4 and the installation angle of the ground anchor 4; During specific implementation, system configuration: Set the sensor parameters (such as sampling frequency, range) according to project requirements and calibrate the signal amplifier.

[0039] During specific implementation, power preparation: Install the battery and check whether the power supply is sufficient to ensure the stable connection between the signal box and the sensor.

[0040] S20. Installation and connection of on-site equipment: S21. Burial of the ground anchor 4; Bury the ground anchor 4 to the designed depth, use the burying tool to ensure the stability of the ground anchor 4, connect the second end of the ground anchor tie rod 2 to the anti-interference magnetic ring 3, and dock the force-receiving end of the tensile force sensor 9 through the connecting rod 10; S22. Arrangement of the tensile force sensor 9: Fix the tensile force sensor 9 at the force-receiving point, and use a protection device (such as a fixator) to avoid damage caused by over-range. Ensure that there is no dirt on the surface of the sensor; S23. Connection of signal lines: Check whether the standard signals output by the tensile force sensor and the displacement sensor can be smoothly transmitted to the signal box, whether the line is short-circuited or has poor contact, and whether the low-frequency electromagnetic wave modulated by the signal box is correctly output to the ground monitoring device through the transmitting antenna.

[0041] S30. Measurement of the ground anchor force: Measurement principle: The ground anchor tensile force is measured through the strain resistance effect of the sensor. When a tensile force is applied, the resistance change of the strain gauge is converted into a voltage signal, which is output as a standard signal after linearization processing.

[0042] Data processing: The weak signal is amplified by a sensor amplifier so that the signal box can receive and process it. The signal box performs low-frequency modulation to optimize signal penetration and anti-interference ability.

[0043] Measurement steps: Start the system, connect the tensile sensor and displacement sensor to the control terminal, apply simulated tensile force under preset conditions, verify the sensor accuracy, record the tensile force value in real time and analyze the data change, and observe whether there are abnormal fluctuations.

[0044] Remote data monitoring: Monitoring method: Use a remote monitoring software based on a graphical interface (such as PLC or cloud platform) to realize the interaction with the ground anchor sensor system. The operation interface includes modules such as real-time data display, historical data storage, and alarm information.

[0045] Monitoring equipment: It is divided into on-site equipment and remote monitoring equipment. On-site equipment: Ground receiving antenna: Responsible for receiving underground signals and transmitting them to the monitoring terminal.

[0046] Portable data receiver (such as a handheld terminal or mobile tablet) to view data in real time. Remote monitoring equipment: Computer or server: Used to collect, analyze, and store data, supporting Wi-Fi or Internet of Things communication.

[0047] Wireless transmission module: It is recommended to use LoRa or NB-IoT module to achieve long-distance and low-power communication.

[0048] The above is only a preferred embodiment of the present invention, and it does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims

1. An intelligent tension monitoring ground anchor device, characterized in that, Including: An earth anchor tie rod, with an earth anchor interface provided at the first end of the earth anchor tie rod; A tensile force sensor, the force-receiving end of the tensile force sensor is connected to the second end of the earth anchor tie rod through a connecting rod; a fixator, the first end of the fixator is slidably connected to the connecting rod, and the second end of the fixator is connected to the upper end of the housing of the tensile force sensor; An earth anchor, the first end of the earth anchor is connected to the first end of the fixator through multiple support rods; A displacement sensor, the first end of the displacement sensor is rotatably connected to the second end of the earth anchor; A signal box, the signal box is rotatably connected to the second end of the displacement sensor, both the tensile force sensor and the displacement sensor are electrically connected to the signal box, and the signal box is signal-connected to an external monitoring device.

2. The intelligent tensile force monitoring ground anchor device according to claim 1, characterized in that, It further includes an anti-interference magnetic ring, and the anti-interference magnetic ring is arranged on the earth anchor tie rod or the connecting rod.

3. The intelligent tensile force monitoring ground anchor device according to claim 1, characterized in that, The earth anchor is a pull plate type earth anchor.

4. The intelligent tensile force monitoring ground anchor device according to claim 1, wherein, The earth anchor is of a hollow structure and has an opening at the bottom.

5. The intelligent tensile force monitoring ground anchor device according to claim 4, wherein A cross bar is arranged inside the earth anchor, and a matching contact plate is connected at the opening; long strip holes are arranged on the contact plate, and the first end of the displacement sensor passes through the long strip holes and is rotatably connected to the cross bar.

6. The intelligent tensile force monitoring ground anchor device according to claim 1, characterized in that, It further includes a transmitting antenna, and the transmitting antenna is connected to the signal box.

7. The intelligent tensile force monitoring ground anchor device according to claim 1, characterized in that, A support frame is arranged outside the signal box.

8. The intelligent tensile force monitoring ground anchor device according to claim 1, characterized in that, A battery is installed inside the signal box.

9. A method for using an intelligent tension monitoring ground anchor device, characterized in that, Using the intelligent tensile force monitoring earth anchor device according to any one of claims 1 to 8, the method includes the following steps: S10. Preliminary preparation: Ensure that the earth anchor, tensile force sensor, displacement sensor, signal box, battery, and antenna are intact, the tensile force sensor and the displacement sensor are accurately calibrated, conduct on-site surveys on the geological conditions of the earth anchor burial location, and measure the soil properties to determine the designed burial depth and installation angle of the earth anchor; S20. Installation and connection of on-site equipment: S30. Measurement of earth anchor force: Connect the tensile force sensor and the displacement sensor to the control terminal, apply simulated tensile force under preset conditions, verify the accuracy of the tensile force sensor, record the tensile force value in real time and analyze the data change, and observe whether there are abnormal fluctuations.

10. The method for using the intelligent tensile force monitoring ground anchor device according to claim 9, characterized in that, Step S20 includes: S21. Earth anchor burial; Bury the earth anchor into the designed depth, connect the second end of the earth anchor tie rod to the anti-interference magnetic ring, and dock with the force-receiving end of the tensile force sensor through the connecting rod; S22. Arrangement of the tensile force sensor: Fix the tensile force sensor at the force application point to ensure that the surface of the sensor is free of dirt; S23. Connection of signal lines.

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