Detection device suitable for performance of steel member of power transmission tower

Abstract

The utility model provides a device suitable for detecting the performance of a steel member of a power transmission tower, and particularly relates to the technical field of performance detection of power transmission towers. The detection device is characterized by comprising a device body and a central computer, and a data analysis and processing module is arranged in the device body; two parallel guide rails are arranged on the left side and the right side of the bottom of the device body. A camera is arranged in the center of the bottom of the device body; the left side and the right side of the camera are each provided with two sets of probes. An electromagnet is arranged at the bottom of each guide rail; the electromagnet is in sliding connection with the guide rail through a connecting mechanism and rotates in the horizontal plane. According to the device, the electromagnet is controlled to be powered on and powered off, so that the device moves between components to be detected, performance changes of steel at suspected corrosion and cracks are measured in combination with an impedance spectroscopy method, the internal structure and performance of the steel can be deeply analyzed, and compared with a traditional appearance detection method, the device is more accurate and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power transmission tower performance detection, and specifically relates to a detection device suitable for the performance of power transmission tower steel member. BACKGROUND

[0002] In the power transmission system, the power transmission tower undoubtedly plays a key supporting role. As an important part of the entire power transmission network, the steel member of the power transmission tower bears a huge weight and various complex stresses. The performance status of these steel members is directly related to the safe and stable operation of the power transmission line, and any potential problem may cause serious consequences.

[0003] The traditional steel member performance detection method has many drawbacks in actual application. On the one hand, the traditional detection often highly depends on manual operation, and the detection personnel need to use various instruments and equipment to personally go to the power transmission tower site for measurement and evaluation, which not only needs to consume a lot of time and labor cost, but also due to the limitation of manual operation, the detection efficiency is extremely low. Especially in the face of large-scale power transmission lines and numerous power transmission towers, the traditional detection method is difficult to meet the needs of rapid and comprehensive detection; on the other hand, the manual detection accuracy is low: the detection result is easily affected by the skill level, working state and environmental factors of the detection personnel, and lacks consistency and reliability; finally, manual detection can only carry out periodic sampling detection, and cannot realize real-time monitoring of the performance of the steel member, which makes some potential problems may gradually develop between two detections, and eventually evolve into serious safety hazards.

[0004] At the same time, with the rapid development of social economy, the scale of power transmission lines is continuously expanding, and the covered area is also becoming more and more extensive, from the high-rise buildings in the city to the remote mountains and wilderness, the operation environment of the power transmission tower is increasingly complex and changeable. Under such background, the traditional detection method is more and more inadequate. On the one hand, the complex geographical environment and adverse weather conditions may bring great difficulties to manual detection, and even cannot carry out detection. For example, in the high mountains, marshes and other areas, the detection personnel are difficult to reach the power transmission tower site; in the strong wind, rainstorm, ice and snow and other adverse weather, the detection work must be suspended. On the other hand, with the continuous improvement of the voltage level of the power transmission line, the requirement for the performance of the steel member is also more and more strict. The traditional detection method is difficult to meet the needs of high-precision and real-time monitoring of the performance of the steel member. Therefore, it is urgent to need a detection device that can accurately monitor the performance of the steel member in real time to adapt to the high standard requirements of modern power transmission system for the safe and stable operation of the power transmission tower. UTILITY MODEL CONTENTS

[0005] In order to overcome the above prior art, solve the problems of traditional detection means relying on complex equipment, high purchase and maintenance cost, and being easily affected by environment and weather, and low precision and unable to realize real-time monitoring of the measured component, the utility model provides a detection device suitable for performance of steel component of power transmission tower, and the specific technical scheme is as follows:

[0006] A detection device suitable for performance of steel component of power transmission tower, including device body and central computer, data analysis and processing module are arranged in the device body, two parallel guide rails are arranged on the left and right sides of the bottom of the device body, a camera is arranged at the center position of the bottom of the device body, two groups of probes are arranged on the left and right sides of the camera, an electromagnet is arranged at the bottom of each guide rail, and the electromagnet is connected with the guide rail through a connecting mechanism and rotates in the horizontal plane.

[0007] Preferably, the side wall of the guide rail is provided with a rack along the length direction.

[0008] Preferably, the connecting mechanism includes a connecting groove, a gear, a first driving motor, a fixed rod and a second driving motor, the first driving motor is fixed in the inner cavity of the connecting groove, the gear is sleeved on the output shaft of the first driving motor, the gear is engaged with the rack of the side wall of the guide rail, the second driving motor is fixed at the bottom of the connecting groove through the fixed rod, and the output shaft of the second driving motor is fixedly connected with the top of the electromagnet.

[0009] Preferably, the electromagnet is connected with a power supply system.

[0010] Further preferably, the probes, the data analysis and processing module, the camera and the power supply system are electrically connected with the central computer.

[0011] The utility model has the advantages of:

[0012] 1. The camera can detect whether the lower steel material has rust, crack and other conditions in real time, clearly capture the subtle changes on the surface of the steel material, and provide intuitive visual information for the detection personnel, and the automatic identification function of the camera can quickly screen out suspected defect positions and provide accurate targets for subsequent in-depth detection.

[0013] 2. The utility model adopts the impedance spectrum method to measure the performance change of the steel material at the suspected rust and crack position, can deeply analyze the internal structure and performance of the steel material, deduce the damage degree and development trend of the steel material through accurate measurement of voltage and current, can more accurately evaluate the performance condition of the steel material compared with the traditional appearance detection method, and provide scientific basis for timely maintenance measures.

[0014] 3. This utility model utilizes the free rotation of an electromagnet in a horizontal plane, combined with the precise control of a drive motor, to adjust the position of the device relative to the rotation angle of the electromagnet, thereby enabling movement between various steel components of the transmission tower. This achieves optimal adjustment of the detection position and angle, ensuring the comprehensiveness and accuracy of the detection. Compared to traditional manual detection methods, it eliminates the need for personnel to climb and move equipment, greatly improving detection efficiency.

[0015] 4. By controlling the relative position of the electromagnet and the guide rail, this utility model can ensure that the equipment accurately reaches the position of the steel component to be inspected, avoiding missed inspections or repeated inspections due to inaccurate inspection position, thus improving reliability. Attached Figure Description

[0016] The accompanying drawings constituting this application are provided to further understand this application and do not constitute an undue limitation of this application.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a bottom view of the present invention.

[0019] Figure 3 This is a schematic diagram of the connection between the electromagnet and the guide rail.

[0020] Figure 4 A top view of the connection between the guide rail rack and gear;

[0021] In the figure, 1-device body; 2-guide rail; 21-rack; 3-electromagnet; 31-connecting groove; 32-gear; 33-first drive motor; 34-fixed rod; 35-second drive motor; 36-output shaft; 4-camera; 5-probe. Detailed Implementation

[0022] The specific implementation of the testing device for the performance of steel components of transmission towers provided by this utility model will be further described in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 1-2 As shown, a testing device for the performance of steel components of transmission towers includes a device body 1 and a central computer. The device body 1 is equipped with a data analysis and processing module. Two parallel guide rails 2 are arranged on the left and right sides of the bottom of the device body 1. A camera 4 for transmitting image signals is arranged at the center of the bottom of the device body 1, which can transmit clear images of the component under test back to the central computer in real time. The automatic recognition function of the camera 4 can quickly screen out suspected defective parts, so as to select accurate monitoring targets for subsequent in-depth testing. Two sets of probes 5 are arranged on each side of the camera 4.

[0024] Preferably, each guide rail 2 is provided with an electromagnet 3 at its bottom. The electromagnet 3 is connected to the power supply system. By energizing and de-energizing the electromagnet 3, the electromagnet 3 can be fixed to the component under test on the transmission tower.

[0025] Preferably, the electromagnet 3 is connected to a connecting mechanism to slide back and forth along the length of the guide rail and to rotate on its own in the horizontal plane.

[0026] like Figure 4 As shown, a rack 21 is provided on one side wall of the guide rail 2 along the length direction.

[0027] like Figure 3 As shown, the connecting mechanism includes a connecting groove 31, a gear 32, a first drive motor 33, a fixing rod 34, and a second drive motor 35. Specifically, the first drive motor 33 is fixed in the inner cavity of the connecting groove 31; the gear 32 is sleeved on the output shaft of the first drive motor 33; the gear 32 meshes with the rack 21 on the side wall of the guide rail 2. The second drive motor 35 is fixed to the bottom of the connecting groove 31 by the fixing rod 34, the output shaft of the second drive motor 35 is fixedly connected to the top of the electromagnet 3, and the bottom of the electromagnet 3 is magnetically fixed to the component under test.

[0028] More preferably, the camera 4, the data analysis and processing module, the probe 5, and the power supply system are all electrically connected to the central computer.

[0029] It is worth noting that the probe of this invention has good contact performance and stability. At the same time, the probe's connecting wire adopts a shielding and anti-interference design to reduce the influence of the external environment on the detection results and improve the accuracy and reliability of the detection.

[0030] In operation, electromagnet 3 is first energized to magnetically fix it to the component under test on the transmission tower. Then, the first drive motor 33 is controlled to rotate gear 32, which meshes with the rack 21 of guide rail 2, thus adjusting the movement of electromagnet 3 along guide rail 2. The step size can be manually set, and the step size is reduced when it reaches the vicinity of the test position until it reaches the test position. The two electromagnets 3 are alternately energized and de-energized under the control of the central computer, thereby completing the overall movement of the device. When it is necessary to move from one component under test to another, only one electromagnet 3 needs to be fixed to the current component under test. By controlling the rotation of the second drive motor 35 corresponding to that electromagnet 3, the angle of the device can be adjusted, allowing the other electromagnet 3 to rotate to the surface of the next component under test and be energized, thus completing the switching of the working position between the current component under test and the next component under test.

[0031] During detection, four groups of probes are connected with the component to be detected, and the contact pressure between the probes and the component to be detected is ensured to be moderate, so that the contact is not poor due to too small pressure, and the electrical characteristics of the component are not changed due to too large pressure; then, the two groups of probes located on the inner side are used to measure the output alternating voltage, and the two groups of probes located on the outer side are used to measure the output alternating current; then, the alternating voltage source is started, different frequency alternating voltage signals are output in a linear change manner according to the set frequency range, the output current between the two groups of probes located on the outer side is measured by the current measuring instrument, and the measured output current is transmitted to the central computer after being processed by the data analysis and processing module; finally, the voltage and current signal values obtained after measurement and processing are subjected to Fourier transform, and the impedance spectrum is calculated and drawn by using Ohm's law, when the impedance spectrum at a certain position obviously deviates from other positions, it is indicated that the mechanical property of the component to be detected at the position is abnormal, and the damage type is judged in combination with the image information transmitted back by the camera, and corresponding maintenance measures are taken.

[0032] The following aspects need to be paid attention to in the application process of the utility model:

[0033] 1. Regularly check the magnetic strength of the electromagnet to ensure that it can be firmly adsorbed on the steel component of the power transmission tower in various environments, and professional magnetic force measuring instruments can be used for detection, and if the magnetic force is found to be weakened, the cause should be investigated in time and maintenance or replacement should be carried out;

[0034] 2. Pay attention to the heating condition of the electromagnet, and long time work may cause the temperature of the electromagnet to be too high, affecting its performance and service life; it can be considered to install a heat dissipation device or reasonably arrange the detection time to avoid continuous long time use of the electromagnet;

[0035] 3. Regularly maintain the driving motor, check whether the operation of each driving motor is normal, whether there is abnormal noise and vibration, clean the dust and sundries around the motor in time, and keep the motor clean;

[0036] 4. Check the connection line of the motor to ensure that the line connection is firm, and there is no looseness or damage, and if there is a problem, it should be repaired in time to avoid affecting the normal work of the motor due to line fault;

[0037] 5. Keep the camera lens clean and wipe it regularly to ensure the clarity of image acquisition. After use in harsh environment, check whether the camera is contaminated in time and clean it;

[0038] 6. Regularly update and optimize the image recognition software of the camera to improve the accuracy and efficiency of identifying defects such as rust and cracks; at the same time, attention should be paid to the compatibility and stability of the software to avoid affecting the detection work due to software problems;

[0039] 7. When using the probe for impedance spectrum measurement, ensure good contact between the probe and the steel surface, and use appropriate pressure devices or fixing mechanisms to ensure that the probe does not loosen or shift during measurement;

[0040] 8. Calibrate the probe regularly to ensure the accuracy of the measurement data, and the calibration process should be strictly in accordance with the operating procedures, using standard calibration equipment and methods.

[0041] The utility model discloses a through the on-off control device of electromagnet between the movement of the component to be detected, combines impedance spectrum method and measures the steel performance change of suspected corrosion, crack, can in-depth analysis the internal structure and performance of steel, compared with traditional appearance detection method, more accurate, convenient.

[0042] In the utility model, the terms such as "upper", "lower", "bottom", "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, and the relationship word is determined only for the convenience of describing the structural relationship of the components or elements of the utility model, and cannot be understood as the limitation of the utility model. The terms such as "connected", "connected" should be understood broadly, which can be fixedly connected, integrally connected or detachably connected, and can be directly connected or indirectly connected through an intermediate medium. For the related scientific research or technical personnel in the field, the specific meaning of the above-mentioned terms in the utility model can be determined according to the specific situation, and cannot be understood as the limitation of the utility model.

[0043] Of course, the above description is not a limitation of the utility model, and the utility model is also not limited to the above examples, and the changes, modifications, additions or replacements made by the technical personnel in the technical field within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A device for detecting the performance of a steel member of a power transmission tower, characterized in that, The device comprises a device body and a central computer, the device body is internally provided with a data analysis and processing module; two parallel guide rails are arranged on the left and right sides of the bottom of the device body; a camera is arranged at the central position of the bottom of the device body; two groups of probes are arranged on the left and right sides of the camera; an electromagnet is arranged at the bottom of each guide rail; the electromagnet is connected with the guide rail through a connecting mechanism to realize sliding connection and self-rotation of the electromagnet in the horizontal plane.

2. The device for detecting the performance of the steel member of the power transmission tower according to claim 1, wherein, The side wall of one side of the guide rail is provided with a rack along the length direction.

3. The device for detecting the performance of the steel member of the power transmission tower according to claim 2, characterized in that, The connecting mechanism comprises a connecting groove, a gear, a first driving motor, a fixed rod and a second driving motor; The first driving motor is fixed in the inner cavity of the connecting groove; the gear is sleeved on the output shaft of the first driving motor; the gear is engaged with the rack of the side wall of the guide rail; The second driving motor is fixed at the bottom of the connecting groove through the fixed rod; the output shaft of the second driving motor is fixedly connected with the top of the electromagnet.

4. The device for detecting the performance of steel members of a power transmission tower according to claim 1, wherein, The electromagnet is connected with a power supply system.

5. The device for detecting the performance of the steel member of the power transmission tower according to claim 4, characterized in that, The probes, the data analysis and processing module, the camera and the power supply system are electrically connected with the central computer.

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