Concrete pole protective layer measuring device

Abstract

The invention discloses a cement pole protection layer measuring device, relates to cement pole detection equipment, and aims to solve the problems of poor detection result accuracy and low detection efficiency caused by too few sampling points in the conventional cement pole protection layer detection method. The measurement module comprises a flexible strip-shaped belt and a plurality of metal detectors which are arranged at intervals along the length direction of the flexible strip-shaped belt; the metal detectors are mutually independent, and the detection surfaces of the metal detectors face the surface of the to-be-detected concrete pole; the wireless transmission module is electrically connected with the plurality of metal detectors, and sends the data of the distance from the steel bar in the concrete pole to the surface of the concrete pole collected by each metal detector to the calculation module in a wireless mode; and the calculation module is used for calculating the thickness maximum value, the thickness minimum value and the average value of the protective layer in the same section of the concrete pole and the eccentricity of the steel bar framework according to the distance data from the steel bar in the concrete pole to the surface of the concrete pole so as to complete the measurement of the protective layer of the concrete pole. The beneficial effect is that the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The invention relates to cement pole detection equipment. Background Art

[0002] Cement poles (also known as concrete poles) serve as the "skeleton" of infrastructure for power, communications, and municipal services. They operate in harsh environments such as open air, high humidity, salt spray, and even freeze-thaw conditions. The quality of cement poles is crucial, reflected in their stable operation in many fields such as power and communications. The thickness of the protective layer is a key indicator. The steel bars are the key components of cement poles that withstand tension, and the concrete protective layer allows the steel bars and concrete to work together. The appropriate protective layer thickness allows the steel bars to effectively transfer force when stressed through the bond between the steel bars and the concrete, making the overall structure of the cement pole stable and resisting external loads. The protective layer provides a bonding and anchoring interface between the steel bars and the concrete. Insufficient thickness will reduce the cross-section's ability to work together, making it prone to brittle failure under extreme loads such as strong winds, icing, conductor tension, and earthquakes. Moisture, oxygen, and corrosive media easily corrode steel bars. The concrete protective layer acts as a barrier, preventing these substances from contacting the steel bars. Concrete acts as a physical and chemical barrier to steel bars, delaying the formation of Cl - , CO2, O2, H2O and other corrosive media migration; when the protective layer is too thin or uneven, the steel bars will corrode and expand locally, resulting in cracks along the bars, which in turn cause spalling and falling blocks, significantly shortening the service life of the tower; once the bearing capacity of the cement pole declines due to defects in the protective layer, it will need to be replaced by power outage, resulting in high maintenance costs and power outage losses, indirectly affecting social operation efficiency. Existing methods for detecting the protective layer of cement poles mainly rely on "manual drilling + vernier caliper" or "single-point steel bar detector", and have the following common problems:

[0003] Too few sampling points: According to industry practice, only one point is measured on each of the three sections of the whole rod, which results in large random errors and cannot reflect the gradual change of the tapered rod cross section from small to large and the steel bars from dense to sparse;

[0004] Low operating efficiency: Each measurement point requires drilling or repeatedly fitting the probe, which is labor-intensive. Testing a single rod takes more than 30 minutes, affecting construction progress.

[0005] Data dispersion: Manual recording and calculation are prone to errors, making it difficult to form intuitive and traceable digital reports;

[0006] Environmental limitations: Concrete poles are fixed in muddy and mountainous areas, making long-distance wired connections difficult to deploy and resulting in poor security. Summary of the Invention

[0007] The purpose of the present invention is to solve the problem that the existing cement pole protective layer detection method has too few sampling points, resulting in poor detection result accuracy and low detection efficiency, and proposes a cement pole protective layer measurement device.

[0008] The cement pole protective layer measuring device of the present invention includes a measuring module and a calculating module;

[0009] The measuring module includes a flexible strip and a plurality of metal detectors spaced apart along the length direction of the flexible strip;

[0010] The calculation module is used to calculate the maximum value, minimum value, average value and eccentricity of the protective layer thickness in the same section of the cement pole according to the distance data from the internal steel bars to the surface of the cement pole, and complete the measurement of the protective layer of the cement pole.

[0011] Furthermore, the length of the flexible strip is 1500 mm to 2500 mm;

[0012] The metal detectors are arranged at equal intervals of 90 mm to 110 mm along the flexible strip.

[0013] Furthermore, the metal detector is an electromagnetic induction probe.

[0014] Furthermore, it also includes a wireless transmission module;

[0015] The wireless transmission module is electrically connected to the plurality of metal detectors and sends the distance data from the inner steel bars of the cement pole to the surface thereof collected by each metal detector to the calculation module.

[0016] Furthermore, the wireless transmission module includes a signal modulator, a transmitting antenna, a receiving antenna and a data processor;

[0017] The signal modulator is used to modulate the distance data from the inner steel bar of the cement pole to its surface collected by the metal detector into a radio frequency signal;

[0018] The transmitting antenna is used to amplify and transmit the radio frequency signal power;

[0019] The receiving antenna is used to receive the amplified radio frequency signal;

[0020] The data processor is used to filter, verify and parse the protocol of the amplified RF signal, generate a digital signal and send it to the calculation module.

[0021] Furthermore, a removable battery is also included;

[0022] The detachable battery supplies power to the metal detector and the wireless transmission module.

[0023] Furthermore, the calculation formula for the eccentricity of the steel skeleton is:

[0024]

[0025] in, is the eccentricity of the steel skeleton; is the maximum thickness of the protective layer; is the minimum thickness of the protective layer.

[0026] Furthermore, it also includes magnetic clasps;

[0027] The magnetic buckle is used to fit the flexible strip to the surface of cement poles with different diameters.

[0028] Furthermore, it also includes elastic straps;

[0029] The elastic binding band is used to fit the flexible strip band to the surface of cement poles with different diameters.

[0030] Furthermore, the inner surface of the flexible strip is provided with an anti-slip texture; the outer surface of the flexible strip is provided with a scale.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The coordinated use of a flexible strip and several metal detectors enables multi-point synchronous measurement, eliminates random errors, avoids accidental errors caused by existing single-point sampling, and significantly improves the accuracy and representativeness of protective layer thickness assessment; the flexible strip can fit tightly to the surface of cement poles with different tapers and diameters, and can achieve multi-purpose use of one machine without changing tooling, reducing equipment costs and simplifying operating procedures; the visual overall distribution of the calculation module accurately evaluates eccentricity, and can intuitively detect areas where the local protective layer is too thin or too thick, facilitating timely correction of molds or process parameters to ensure the uniformity of the quality of the cement pole body; at the same time, the sampling inspection process that originally took several hours to complete is compressed to minutes, significantly shortening the production quality inspection cycle and reducing labor costs; the use of a wireless transmission module to summarize and upload all detection data, freeing itself from the constraints of cables, can quickly complete measurements in places where existing methods are difficult to operate, such as high altitude, outdoor, and near live lines, greatly improving detection efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural block diagram of a cement pole protective layer measuring device described in a specific embodiment;

[0034] Figure 2 Schematic diagram of the structure of the measurement module in the first embodiment;

[0035] Figure 3 This is a three-dimensional diagram of the measurement module after being fixed to the cement pole in the first embodiment.

[0036] Among them, 1 is a measurement module; 1-1 is a flexible strip; 1-2 is a metal detector; 2 is a wireless transmission module; and 3 is a calculation module. DETAILED DESCRIPTION

[0037] Specific implementation method 1. Combination Figures 1 to 3 To illustrate this embodiment, a cement pole protective layer measuring device described in this embodiment includes a measuring module 1 and a calculating module 3;

[0038] The measuring module 1 comprises a flexible strip 1-1 and a plurality of metal detectors 1-2 spaced apart along the length of the flexible strip 1-1; the metal detectors 1-2 are independent of each other and their detection surfaces face the surface of the cement pole 4 to be measured;

[0039] The calculation module 3 is used to calculate the maximum value, minimum value, average value of the protective layer thickness and the eccentricity of the steel bar skeleton in the same section of the cement pole 4 based on the distance data from the internal steel bars to its surface, thereby completing the measurement of the protective layer of the cement pole 4.

[0040] In this embodiment, the metal detector 1-2 detects internal steel bars by emitting an electromagnetic field. When an internal steel bar is detected within the search range, the internal steel bar generates an induced current, thereby generating a secondary magnetic field. The distance between the detector and the internal steel bar is measured by collecting the signal of the interaction between the secondary magnetic field and the original magnetic field.

[0041] The calculation module 3 is a portable terminal whose software interface simultaneously displays: a real-time measurement curve; pass / fail color markings; a schematic diagram of the conical cement pole 4 cross section and a cloud diagram of the protective layer thickness; and an exportable PDF or Excel test report. The calculation module 3 is also configured to establish a database associating cement pole 4 numbers, test data, and timestamps; and to enable batch management of multiple cement poles 4 and historical data tracing through cloud synchronization.

[0042] Specific embodiment 2: This embodiment further defines the cement pole protective layer measuring device described in specific embodiment 1. In this embodiment, the length of the flexible strip 1-1 is 1500mm to 2500mm;

[0043] The metal detectors 1 - 2 are arranged at equal intervals of 90 mm to 110 mm along the flexible strip 1 - 1 .

[0044] In this implementation, metal detectors are arranged at 100mm intervals, each with its own circuit. The length is customized based on the model and location being measured. A total of 21 detectors are placed, spanning 2000mm, capable of measuring tapered concrete poles of various sizes, including 190mm, 230mm, and 350mm. The quantitative limits on the flexible strip length (1500mm–2500mm) and the detector spacing (90mm–110mm) enable the device to simultaneously cover the entire cross-section of all popular tapered concrete poles, avoiding missed or duplicate measurements and improving detection standardization.

[0045] Specific embodiment three: This embodiment further limits the cement pole protective layer measuring device described in specific embodiment one. In this embodiment, the metal detector 1-2 is an electromagnetic induction probe.

[0046] In this embodiment, the metal detector 1-2 uses an electromagnetic induction probe, which does not require coupling agent and is not affected by the moisture or roughness of the concrete surface. It can operate directly in harsh sites such as rainy days and high salt fog, and its environmental adaptability is significantly better than ultrasonic or radar solutions.

[0047] Specific embodiment 4: This embodiment further defines the cement pole protective layer measuring device described in specific embodiment 1. In this embodiment, it further includes a wireless transmission module 2;

[0048] The wireless transmission module 2 is electrically connected to the plurality of metal detectors 1 - 2 and sends the distance data from the internal steel bars of the cement pole 4 to its surface collected by each metal detector 1 - 2 to the calculation module 3 .

[0049] In this embodiment, information is transmitted through the wireless transmission module 2; the wireless transmission module 2 is used to summarize and upload all detection data, freeing itself from the constraints of cables, and can quickly complete measurements in situations where existing methods are difficult to operate, such as at high altitudes, in the wild, near live lines, etc., thereby greatly improving detection efficiency and safety.

[0050] Specific embodiment 5. This embodiment further limits the cement pole protective layer measuring device described in specific embodiment 4. In this embodiment, the wireless transmission module 2 includes a signal modulator, a transmitting antenna, a receiving antenna and a data processor;

[0051] The signal modulator is used to modulate the distance data from the inner steel bar of the cement pole 4 to its surface collected by the metal detector 1-2 into a radio frequency signal;

[0052] The transmitting antenna is used to amplify and transmit the radio frequency signal power;

[0053] The receiving antenna is used to receive the amplified radio frequency signal;

[0054] The data processor is used to filter, verify and parse the protocol of the amplified radio frequency signal, generate a digital signal, and send it to the calculation module 3.

[0055] In this embodiment, the signal modulator modulates the distance data from the steel bars inside the cement pole 4 to its surface collected by the metal detector 1-2 into a radio frequency signal through ASK / FSK / LoRa and other methods; the wireless transmission module 2 integrates a complete radio frequency link of signal modulation, power amplification, filtering and verification, and protocol analysis, and supports low-power Bluetooth / Wi-Fi / LoRa multi-protocol adaptation to ensure stable and anti-interference transmission in different scenarios such as urban areas, outdoors, and high altitudes, and has breakpoint resumption and data encryption functions to ensure data integrity and security.

[0056] Specific embodiment 6: This embodiment further defines the cement pole protective layer measuring device described in specific embodiment 4 or 5. In this embodiment, it further includes a detachable battery;

[0057] The removable battery supplies power to the metal detectors 1 - 2 and the wireless transmission module 2 .

[0058] In this embodiment, the design of the removable battery enables on-site operation without mains power. Continuous operation can be achieved by replacing the removable battery, avoiding interruption of detection due to power exhaustion and improving the continuous operation capability in field or high-altitude scenes.

[0059] Specific embodiment 7. This embodiment further limits the cement pole protective layer measuring device described in specific embodiment 1. In this embodiment, the calculation formula of the steel bar skeleton eccentricity is:

[0060]

[0061] in, is the eccentricity of the steel skeleton; is the maximum thickness of the protective layer; is the minimum thickness of the protective layer.

[0062] In this embodiment, Metal detectors 1-2 collected The distance from the inner reinforcement of the cement pole 4 to its surface, where each data is 、 、 … ; Using calculation module 3 、 、 … Sort by size; the first one is ; The one at the end is ; ;in This implementation introduces a quantitative eccentricity formula to quantify and visualize the hidden defect of "rebar skeleton eccentricity" for the first time, providing manufacturers with quantifiable quality criteria for mold adjustment and construction units for acceptance, thereby reducing the risk of tower cracking in the later stages.

[0063] Specific embodiment eight, this embodiment further defines the cement pole protective layer measuring device described in specific embodiment one, and in this embodiment, further includes a magnetic buckle;

[0064] The magnetic buckle is used to fit the flexible strip 1 - 1 onto the surface of cement poles 4 of different diameters.

[0065] In this embodiment, a magnetic buckle is used to fix the flexible strip 1-1 on the surface of the cement pole 4; the magnetic buckle can be instantly positioned on the iron mold or pole segment, and a single person can complete the fixing of the strip, reducing the installation time by more than 50% compared with the strapping solution, and is particularly suitable for one-handed operation in narrow spaces or at high altitudes.

[0066] Specific embodiment 9. This embodiment further defines the cement pole protective layer measuring device described in specific embodiment 1. In this embodiment, it further includes an elastic binding band;

[0067] The elastic binding band is used to fit the flexible strip 1 - 1 to the surface of cement poles 4 of different diameters.

[0068] In this embodiment, an elastic strap is used to fix the flexible strip belt 1-1 on the surface of the cement pole 4; the elastic strap is suitable for conical cement poles 4 of any diameter and can be automatically tightened without an adjustment mechanism, thereby avoiding measurement errors caused by sliding of the flexible strip belt 1-1. At the same time, it is compatible with non-ferrous poles, expanding the scope of application.

[0069] Specific embodiment 10. This embodiment further limits the cement pole protective layer measuring device described in specific embodiment 1. In this embodiment, the inner surface of the flexible strip 1-1 is provided with an anti-slip texture; the outer surface of the flexible strip 1-1 is provided with a scale.

[0070] In this embodiment, the combination of the anti-slip texture on the inner surface of the flexible strip 1-1 and the scale scale on the outer surface not only prevents data drift caused by gravity during the measurement process, but also allows the operator to quickly locate the measurement height visually, reducing the need to carry additional measuring tools and further improving on-site efficiency.

[0071] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A cement pole protective layer measuring device, characterized in that: It includes a measuring module (1) and a calculating module (3); The measuring module (1) comprises a flexible strip (1-1) and a plurality of metal detectors (1-2) arranged at intervals along the length direction of the flexible strip (1-1); The calculation module (3) is used to calculate the maximum value, minimum value, average value and eccentricity of the protective layer thickness in the same cross section of the cement rod (4) based on the distance data from the internal steel bars of the cement rod (4) to its surface, thereby completing the measurement of the protective layer of the cement rod (4).

2. A cement pole protective layer measuring device according to claim 1, characterized in that: The length of the flexible strip (1-1) is 1500mm to 2500mm; The metal detectors (1-2) are arranged at equal intervals of 90 mm to 110 mm along the flexible strip (1-1).

3. The cement pole protective layer measuring device according to claim 1, characterized in that: The metal detector (1-2) is an electromagnetic induction probe.

4. A cement pole protective layer measuring device according to claim 1, characterized in that: Also includes a wireless transmission module (2); The wireless transmission module (2) is electrically connected to the plurality of metal detectors (1-2), and transmits the distance data from the internal steel bars of the cement pole (4) to the surface thereof, collected by each metal detector (1-2), to the calculation module (3).

5. The cement pole protective layer measuring device according to claim 4, characterized in that: The wireless transmission module (2) includes a signal modulator, a transmitting antenna, a receiving antenna and a data processor; The signal modulator is used to modulate the distance data from the inner steel bars of the cement pole (4) to its surface collected by the metal detector (1-2) into a radio frequency signal; The transmitting antenna is used to amplify and transmit the radio frequency signal power; The receiving antenna is used to receive the amplified radio frequency signal; The data processor is used to filter, verify and parse the amplified radio frequency signal, generate a digital signal and send it to the calculation module (3).

6. A cement pole protective layer measuring device according to claim 4 or 5, characterized in that: Also includes a removable battery; The detachable battery supplies power to the metal detector (1-2) and the wireless transmission module (2).

7. The cement pole protective layer measuring device according to claim 1, characterized in that: The calculation formula of the steel skeleton eccentricity is: in, is the eccentricity of the steel skeleton; is the maximum thickness of the protective layer; is the minimum thickness of the protective layer.

8. The cement pole protective layer measuring device according to claim 1, characterized in that: Also includes magnetic clasp; The magnetic buckle is used to fit the flexible strip (1-1) onto the surface of cement poles (4) of different diameters.

9. The cement pole protective layer measuring device according to claim 1, characterized in that: Also included are elastic straps; The elastic binding band is used to fit the flexible strip band (1-1) to the surface of cement poles (4) of different diameters.

10. The cement pole protective layer measuring device according to claim 1, characterized in that: The inner surface of the flexible strip belt (1-1) is provided with an anti-slip texture; and the outer surface of the flexible strip belt (1-1) is provided with a scale.

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