A method for monitoring dynamic data of poles

Abstract

This invention discloses a method for monitoring dynamic data of a gantry crane, including a secondary torsional stress monitoring unit. The number of secondary torsional stress monitoring units is the same as the number of sections of the lattice-type main gantry crane, with one secondary torsional stress monitoring unit installed on the inner side of each gantry crane section. Each secondary torsional stress monitoring unit includes a deformable secondary torsional tube installed on the inner side of the corresponding gantry crane section. The lower end of each secondary torsional tube is equipped with a real-time monitoring sub-unit for monitoring the water pressure inside the secondary torsional tube. The side of the secondary torsional tube is fixedly connected to the four main steel members of the corresponding gantry crane section via multiple connecting rods. The invention also includes a main torsional stress monitoring unit, which includes a deformable main torsional tube and a real-time monitoring main unit for monitoring the water pressure inside the main torsional tube. This invention adds a torsional stress monitoring method to existing bending stress monitoring technology, simultaneously monitoring bending stress and torsional stress, resulting in a more comprehensive stress analysis of the entire lattice-type main gantry crane.

Description

Technical Field

[0001] This invention belongs to the field of data processing technology, specifically relating to a method for monitoring dynamic data of a pole. Background Technology

[0002] Pole-lifting systems are key lifting equipment widely used in large-scale engineering construction, especially in the power, telecommunications, petrochemical, and construction industries. A pole-lifting system includes a main pole, head pulley blocks, bottom pulley blocks, guy wire systems, and sensor and monitoring systems. Common main poles are lattice-type poles (welded from angle steel or steel pipes) and tubular-type poles (seamless steel pipes or aluminum alloy pipes). Tubular-type poles generally have a lifting capacity of less than 20 tons and a pole length of no more than 30 meters, suitable for lifting operations with relatively small lifting capacities and low heights. In contrast, lattice-type poles have a strong lifting capacity, ranging from tens to hundreds of tons. They can generally be used for single-pole lifting or two-pole joint lifting, suitable for scenarios with high lifting capacity requirements and heavy loads, such as the erection of large transmission line towers. Integrating a monitoring system into the lattice-type pole is crucial.

[0003] Patent application number 2019106665590 discloses a method for monitoring the working status of a gantry crane. The method involves installing strain sensors at the weakest points of the gantry crane and determining whether the monitored strain value exceeds the maximum strain tolerance value at that location. If the result is yes, operation stops and an alarm is issued; if the result is no, the judgment is repeated. Theoretically, monitoring the weakest point during conventional construction can accurately reflect the stress condition of the gantry crane. However, gantry crane systems encounter many complex situations in actual operation, such as eccentric loads during hoisting operations, the simultaneous presence of wind loads and eccentric wind forces, structural assembly errors, or asymmetrical loads. The gantry crane is primarily designed to withstand axial pressure (caused by the hoisting load) and bending moments caused by wind loads. Because the precursors to torsional failure are less obvious than those of bending or buckling failure, torsional stress is often easily overlooked or underestimated. However, once the torsional load exceeds a critical value, the gantry crane may suddenly fail without sufficient warning, leading to a major safety accident.

[0004] As can be seen from the above, the existing pole-mounted monitoring methods have the following problems:

[0005] 1. The main focus is on monitoring bending deformation, while torsional deformation is not obvious and is easily overlooked. Under complex operating conditions, the risk factor increases significantly.

[0006] 2. Existing lattice-type and tubular gantry cranes have a uniform overall structure, and the weakest point is not a single point but a region. Covering the entire weakest area with strain sensors would be prohibitively expensive. Based on current strain sensor measurement dimensions, strain sensors can be categorized as uniaxial, biaxial (right-angle), and triaxial (strain rosette) types. Most strain sensors used in lattice-type gantry cranes are uniaxial (sensitive to strain in only one direction, used for uniaxial stress measurement in beams, shafts, etc.), although biaxial and triaxial types are also used. The price of strain sensors on the market is calculated per piece, with each piece ranging from a few centimeters to tens of centimeters in length. The price per piece varies significantly depending on the manufacturer and accuracy, ranging from tens to thousands of yuan. Covering the entire weakest area with strain sensors would be prohibitively expensive. Therefore, the current practical monitoring method is to attach strain sensors at certain intervals in the weakest area. This method significantly reduces the cost of the monitoring system and is one of the most common methods currently used. However, without deploying strain sensors throughout the weakest area, using system sampling data as the actual data for the entire weakest area cannot accurately reflect the true stress changes in the entire weakest area. This is not conducive to reflecting the actual tensile-compressive stress distribution of the gantry, and it is even more impossible to accurately reflect the torsional stress.

[0007] 3. Sensors, their corresponding controller units, and alarm units typically connect via wireless signal transmission. Wireless signal transmission itself suffers from signal delay and is susceptible to interference. On one hand, signal delay leads to delayed alarms, preventing the breakthrough of safety index bottlenecks. On the other hand, wireless signals are easily affected by the structure of the lattice-type gantry itself. The main body of the lattice-type gantry is formed by the fixed connection of main steel and angled steel, and its hollow interior results in a significant Faraday cage effect, leading to unstable wireless signal quality. This is also one of the factors preventing the breakthrough of safety index bottlenecks. Therefore, monitoring the torsional stress of the gantry during tower construction is absolutely significant and crucial. The fact that torsional stress is easily overlooked, the cost of using a large number of sensors is too high, and the accuracy of existing monitoring methods is insufficient leads to its neglect and implementation difficulties. Consequently, the safety factor of the gantry system under special operating conditions such as eccentric loads, wind loads, simultaneous eccentric wind forces, structural assembly errors, or asymmetrical loads during hoisting operations is low, resulting in a higher probability of catastrophic gantry failure accidents. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a method for monitoring dynamic data of a gantry crane, including a secondary torsional stress monitoring unit. The number of secondary torsional stress monitoring units is the same as the number of sections of the lattice-type main gantry crane, with one secondary torsional stress monitoring unit installed on the inner side of each gantry crane section. Each secondary torsional stress monitoring unit includes a deformable secondary torsional tube installed on the inner side of the corresponding gantry crane section. The lower end of each secondary torsional tube is equipped with a real-time monitoring sub-unit for monitoring the water pressure inside the tube. The side of the secondary torsional tube is fixedly connected to the four main steel members of the corresponding gantry crane section via multiple connecting rods, and the number of connecting rods between each meter of main steel member and the secondary torsional tube is not less than [a certain number]. The system comprises thirty main torsion tubes; including a main torsion stress monitoring unit, which includes a deformable main torsion tube and a real-time monitoring main unit for monitoring the water pressure inside the main torsion tube; the main torsion tube is installed inside the lattice-type main support rod, and the side of the main torsion tube is fixedly connected to the four main steel members of the lattice-type main support rod through multiple connecting rods, and the number of connecting rods between each meter of main steel member and the main torsion tube is not less than forty; it includes a high-altitude control unit, a power supply unit, and an alarm unit, and the high-altitude control unit is electrically connected to the power supply unit, the alarm unit, the real-time monitoring sub-unit, and the real-time monitoring main unit respectively; the main torsion tube and each sub-torsion tube are filled with pressure medium.

[0009] The preferred embodiment of the dynamic data monitoring method for the pole in this invention is as follows: four secondary torsional stress monitoring units are provided, all of which are arranged in a ring, with the main torsional stress monitoring unit located inside all the secondary torsional stress monitoring units. This distribution aims to disperse all connecting rods at various positions corresponding to the four main steel beams, resulting in a large distribution area. Even small torsional deformations of the main steel beams can cause changes in the volume of the secondary and main torsional tubes, thus improving monitoring accuracy.

[0010] The preferred embodiment of the pole dynamic data monitoring method in this invention is as follows: the upper and lower shapes of the main torsion tube are left-handed and right-handed helices, respectively, or the upper and lower shapes are right-handed and left-handed helices, respectively; all the auxiliary torsion tubes have the same shape as the main torsion tube. When the torsional deformation occurs in the direction of right-handed torsion, the right-handed helical part of the auxiliary and main torsion tubes is more likely to undergo torsion. Similarly, when the torsional deformation occurs in the direction of left-handed torsion, the left-handed helical part of the auxiliary and main torsion tubes is more likely to undergo torsion. This right-handed and left-handed helical design is intended to improve the response to small deformations, that is, even small deformations can cause volume changes in the auxiliary and main torsion tubes, thereby further improving the monitoring accuracy.

[0011] A preferred embodiment of the dynamic data monitoring method for the boom in this invention is as follows: the real-time monitoring main unit and the real-time monitoring sub-unit have the same structure, both including a main piston assembly, a sub-piston assembly and a pressure sensor; the end of the main piston rod of the main piston assembly is fixedly connected to the inner side of the lattice-type main boom through the pressure sensor; the sub-piston assembly includes a sub-piston cylinder and a sub-piston body slidably connected in the sub-piston cylinder; the isobaric chamber located on one side of the sub-piston body is connected to the corresponding main torsion tube or sub-torsion tube; and the pressurization chamber located on the other side of the sub-piston body is connected to the piston chamber of the main piston assembly. The function of the real-time monitoring main unit is to convert the pressure change within the main torsion tube caused by the torsional deformation of the lattice-type main strut into a pressure form that can be captured by the pressure sensor. Specifically, the principle is as follows: The lattice-type main strut undergoes torsional deformation—the main torsion tube correspondingly twists its shape, and its volume decreases—the pressure inside the main torsion tube, filled with water or other incompressible fluid, increases the pressure in the equalization chamber—the auxiliary piston moves, and the hydraulic oil in the pressurization chamber flows into the piston chamber of the main piston assembly. Since the cross-sectional area of ​​the auxiliary piston is smaller than that of the main piston, the main piston moves the main piston rod towards the pressure sensor—the pressure change in the pressure sensor is proportional to the torsional deformation of the lattice-type main strut. Similarly, the real-time monitoring sub-unit operates on the same principle and functions, visually representing the torsional deformation of each strut unit, overcoming the technical problem of difficulty in monitoring the torsional deformation of the lattice-type main strut in existing technologies.

[0012] A preferred embodiment of the dynamic data monitoring method for the gantry in this invention is as follows: The lower end of the main torsion tube and the lower end of each auxiliary torsion tube are provided with a fixed sleeve that communicates with each other. Each fixed sleeve is fixed to the inner side of the lattice-type main gantry, and the isobaric chamber of each auxiliary piston assembly is connected to the corresponding fixed sleeve. The fixed sleeve itself does not deform. The function of the fixed sleeve is to prevent the torsional or bending shape of the lattice-type main gantry from being transmitted to the real-time monitoring main unit and the real-time monitoring auxiliary unit, thus not affecting the normal operation of the real-time monitoring main unit and the real-time monitoring auxiliary unit.

[0013] A preferred embodiment of the dynamic data monitoring method for the pole in this invention includes a bending stress monitoring unit electrically connected to the high-altitude control unit, the bending stress monitoring unit being connected to the lattice-type main pole. It also includes a ground control unit, which is wirelessly connected to the high-altitude control unit via a wireless communication module.

[0014] The method for monitoring dynamic data of the pole in this invention is as follows:

[0015] First, calibration data is acquired: the lattice-type main boom bends from its unbent state to its maximum permissible bending state. During this process, the ground control unit obtains bending change data through the bending stress monitoring unit and local pressure change data caused by the bending deformation of the auxiliary torsion tube in each boom unit through the real-time monitoring sub-unit. The bending change data and local pressure change data are correlated to form a "bending-local pressure" curve. The overall pressure change data caused by the bending deformation of the main torsion tube in each boom unit is obtained through the real-time monitoring main unit. The bending change data and overall pressure change data are correlated to form a "bending-overall pressure" curve. The high-altitude control unit communicates with the ground control unit via a wireless communication module. Then, the maximum torsional deformation is set: both the high-altitude control unit and the ground control unit set the maximum overall torsional deformation and the maximum local torsional deformation. Finally, dynamic monitoring is implemented. During the operation, the high-altitude control unit obtains the real-time overall torsional deformation through the real-time monitoring main unit and the real-time local torsional deformation of each individual pole through the real-time monitoring sub-unit. If the real-time overall torsional deformation is greater than or equal to the maximum overall torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate. Similarly, if the real-time local torsional deformation is greater than or equal to the maximum local torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate. If bending deformation occurs in S3, the high-altitude control unit obtains the real-time overall bending deformation and the real-time local bending deformation through the bending stress monitoring unit. Based on the "bending-local pressure" curve and the "bending-overall pressure" curve in S1, it obtains the corrected overall torsional deformation corresponding to the real-time overall bending deformation and the corrected local torsional deformation corresponding to the real-time local bending deformation. If the real-time overall torsional deformation minus the corrected overall torsional deformation is greater than or equal to the maximum overall torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate. If the real-time local torsional deformation minus the corrected local torsional deformation is greater than or equal to the maximum local torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate.

[0016] The beneficial effects of the pole dynamic data monitoring method in this invention are as follows:

[0017] 1. Based on the existing bending stress monitoring technology, a torsional stress monitoring method has been added. Dual monitoring of bending and torsional stress provides a more comprehensive stress analysis of the entire lattice main pier. It is particularly suitable for special operating conditions such as eccentric loads, wind loads and eccentric wind forces coexisting during hoisting operations, structural assembly errors or asymmetrical loads. Incorporating torsional stress monitoring into the overall stress monitoring system of the pier is a basic requirement and best practice for the safe and efficient construction of modern large-scale transmission line towers.

[0018] 2. Each secondary torsional stress monitoring unit monitors one individual gantry, and all gantry individuals are monitored individually. Simultaneously, the primary torsional stress monitoring unit monitors the entire lattice-structured primary gantry. This combination of local and overall monitoring allows for the analysis of specific torsional stress concentration areas within the lattice-structured primary gantry, which helps reduce the probability of catastrophic gantry failure accidents.

[0019] 3. In actual operation, the simultaneous existence of bending stress and torsional stress is highly likely. Bending stress can also cause deformation of both the secondary and primary torsion tubes, leading to false alarms from the secondary and primary torsional stress monitoring units. To avoid this problem, after obtaining correction data through stress testing on the ground, the high-altitude control unit subtracts the corrected local torsional deformation when calculating the real-time overall torsional deformation, obtaining a true overall torsional deformation. This true overall torsional deformation is used as a parameter for whether the alarm unit issues a warning, thus resolving the influence of bending stress on torsional stress monitoring. 4. The secondary and primary torsional stress monitoring units do not employ a large number of strain gauge sensors. Instead, connecting rods are used to feed back the torsional deformation of the mast to the torsional tube. The increased pressure inside the torsional tube is then captured by the monitoring unit. This avoids the problem of high cost and large number of strain gauge sensors that would otherwise be necessary to improve monitoring accuracy. Furthermore, with a large number of connecting rods, both the local and overall torsional deformation of the mast can be accurately reflected in the torsional tube, achieving torsional stress monitoring accuracy no less than that of deploying a large number of biaxial or triaxial strain gauge sensors. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a circuit connection diagram of the pole dynamic data monitoring method in this invention;

[0022] Figure 2 This is a schematic diagram of the lattice-type main support rod in this invention;

[0023] Figure 3 for Figure 2 A bottom view;

[0024] Figure 4 for Figure 2 A three-dimensional image;

[0025] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0026] Figure 6 This is a schematic diagram of the main torsion tube or the auxiliary torsion tube in this invention.

[0027] Reference numerals: 1. Lattice main strut; 2. Strut unit; 3. Main torsion tube; 4. Real-time monitoring main unit; 5. Connecting rod; 6. Secondary torsion tube; 7. Real-time monitoring secondary unit; 8. Main piston assembly; 9. Secondary piston assembly; 10. Pressure sensor; 11. Straight steel pipe; 12. Main piston rod; 13. Fixed sleeve; 14. Left helical structure; 15. Right helical structure. Detailed Implementation

[0028] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0029] This embodiment provides a method for monitoring dynamic data of a gantry pole. This method is primarily applied to a lattice-type main gantry pole 1, such as... Figure 2 and Figure 4 As shown, the lattice-type main mast 1 is formed by connecting multiple mast units 2 in sequence to form a whole. Each pair of adjacent mast units 2 are connected by a flange for detachment. Each mast unit 2 is formed by welding four rectangular main steel bars and multiple angled steel bars together and connecting them by other fixing methods.

[0030] like Figure 3 and Figure 5 As shown, this embodiment includes a main torsional stress monitoring unit, which comprises a deformable main torsion pipe 3 and a real-time monitoring main unit 4 for monitoring the water pressure inside the main torsion pipe 3. The main torsion pipe 3 is installed inside the lattice-type main support 1, and the side of the main torsion pipe 3 is fixedly connected to the four main steel members of the lattice-type main support 1 by multiple connecting rods 5, and the number of connecting rods 5 between each meter of main steel member and the main torsion pipe 3 is not less than forty.

[0031] like Figure 3 and Figure 5As shown, this embodiment includes a secondary torsional stress monitoring unit. The number of secondary torsional stress monitoring units is the same as the number of sections of the lattice-type main support rod 1. Each section of the support rod 2 has one secondary torsional stress monitoring unit installed on its inner side. The secondary torsional stress monitoring unit includes a deformable secondary torsional tube 6 installed on the inner side of the corresponding support rod 2. The lower end of each secondary torsional tube 6 is provided with a real-time monitoring sub-unit 7 for monitoring the water pressure inside the secondary torsional tube 6. The side of the secondary torsional tube 6 is fixedly connected to the four main steel members of the corresponding support rod 2 by multiple connecting rods 5, and the number of connecting rods 5 between each meter of main steel member and the secondary torsional tube 6 is no less than thirty. The reason why all the connecting rods 5 are fixed to the main steel member is that torsional deformation is most obvious in the main steel member. In contrast, the deformation of the oblique angle steel member is extremely small and difficult to detect. Therefore, fixing the two ends of the connecting rods 5 to the main steel member and the torsional tube respectively makes it very easy to capture the torsional deformation characteristics of the main steel member and improve the accuracy of monitoring torsional stress.

[0032] The main torsion pipe 3 and each of the auxiliary torsion pipes 6 are filled with a fluid pressure medium that is not easily compressed, such as water, and is low in cost.

[0033] The more connecting rods 5 mentioned above, the more accurate the feedback of the deformation degree of the main steel to the torsion tube. The specific number of connecting rods 5 can be increased or decreased according to actual monitoring needs, and this embodiment does not impose any limitations. In addition, as Figure 6 As shown, the upper and lower shapes of the main torsion tube 3 are respectively a left-handed helix and a right-handed helix, or the upper and lower shapes are respectively a right-handed helix and a left-handed helix. The main torsion tube 3 can include one left-handed helix structure 14 and one right-handed helix structure 15, and the specific positions of the left-handed helix structure 14 and the right-handed helix structure 15 are not limited. All the secondary torsion tubes 6 have the same shape as the main torsion tube 3. When the torsion deformation occurs in the direction of right-handed torsion, the right-handed helix portion of the secondary torsion tube 6 and the main torsion tube 3 is more likely to undergo torsion. Similarly, when the torsion deformation occurs in the direction of left-handed torsion, the left-handed helix portion of the secondary torsion tube 6 and the main torsion tube 3 is more likely to undergo torsion.

[0034] like Figure 3 As shown in the example, this embodiment uses four connecting rod units 2 as an example. Therefore, four secondary torsional stress monitoring units are required, all arranged in a ring. The primary torsional stress monitoring unit is located inside all the secondary torsional stress monitoring units. This distribution aims to disperse all connecting rods 5 across the corresponding positions of the four main steel beams, resulting in a large distribution area. Even small torsional deformations of the main steel beams can cause changes in the volume of the secondary torsion tube 6 and the primary torsion tube 3, thus improving monitoring accuracy.

[0035] In this embodiment, the real-time monitoring main unit 4 and the real-time monitoring sub-unit 7 have the same structure, and their specific structures are as follows:

[0036] like Figure 3 and Figure 5 As shown, both the real-time monitoring main unit 4 and the real-time monitoring sub-unit 7 include a main piston assembly 8, a sub-piston assembly 9, and a pressure sensor 10. The end of the main piston rod 12 of the main piston assembly 8 is fixedly connected to the inner side of the lattice-type main support rod 1 through the pressure sensor 10. The sub-piston assembly 9 includes a sub-piston cylinder and a sub-piston body slidably connected in the sub-piston cylinder. The isobaric chamber located on one side of the sub-piston body is connected to the corresponding main torsion pipe 3 or sub-torsion pipe 6 through a straight steel pipe 11. The pressurization chamber located on the other side of the sub-piston body is also connected to the piston chamber of the main piston assembly 8 through a straight steel pipe 11. The function of the real-time monitoring main unit 4 is to convert the pressure change in the main torsion tube 3 caused by the torsional deformation of the lattice main strut 1 into a pressure form that can be captured by the pressure sensor 10. Specifically, the principle is as follows: the lattice main strut 1 undergoes torsional deformation—the main torsion tube 3 correspondingly twists its shape, and its volume decreases—the main torsion tube 3 is filled with water or other incompressible fluid media, increasing the pressure on the equalization chamber—the auxiliary piston moves, and the hydraulic oil in the pressurization chamber flows into the piston chamber of the main piston assembly 8. Since the cross-sectional area of ​​the auxiliary piston is smaller than that of the main piston, the main piston drives the main piston rod 12 to move towards the pressure sensor 10—the pressure change in the pressure sensor 10 is proportional to the torsional deformation of the lattice main strut 1. Similarly, the real-time monitoring sub-unit 7 works on the same principle and has the same function, visually representing the torsional deformation of each strut unit 2, overcoming the technical problem of difficulty in monitoring the torsional deformation of the lattice main strut 1 in the prior art. To prevent the torsional or bending shape of the lattice-type main strut 1 from being transmitted to the real-time monitoring main unit 4 and the real-time monitoring sub-unit 7, a fixed sleeve 13 is provided at the lower end of the main torsion tube 3 and the lower end of each sub-torsion tube 6. Each fixed sleeve 13 is fixed to the inner side of the lattice-type main strut 1, and the isobaric chamber of each sub-piston assembly 9 is connected to the corresponding fixed sleeve 13. In addition, all sub-piston cylinders and main piston cylinders are also fixed, while the fixed sleeve 13 itself does not deform. When the main piston body and sub-piston body slide, the fixed sleeve 13, sub-piston cylinders and main piston cylinders do not move, and the hydraulic oil transmission is not affected.

[0037] like Figure 1 As shown, this embodiment includes a high-altitude control unit, a power supply unit, and an alarm unit. The high-altitude control unit is electrically connected to the power supply unit, the alarm unit, the real-time monitoring sub-unit 7, and the real-time monitoring main unit 4, respectively. The high-altitude control unit, the power supply unit, and the alarm unit are all installed on the inner side of the lattice-type main mast 1, which can prevent damage to each unit from collisions, friction, etc. during transportation or installation.

[0038] The dynamic data monitoring method for the mast in this embodiment adds torsional stress monitoring to the existing bending stress monitoring method. Therefore, it also includes a bending stress monitoring unit electrically connected to the high-altitude control unit, which is connected to the lattice-type main mast 1. It also includes a ground control unit, which is wirelessly connected to the high-altitude control unit via a wireless communication module. The ground control unit is used for calibration settings, parameter adjustment, and remote real-time stress observation. Even with wireless transmission delays, the response speed of the high-altitude control unit and the alarm unit is not affected.

[0039] The specific method for monitoring the dynamic data of the pole in this embodiment is as follows:

[0040] The first step is to acquire calibration data on the ground. Ground equipment is used to bend the lattice main boom 1 from its unbent state to its maximum permissible bending state. During this process, the ground control unit obtains bending change data through the bending stress monitoring unit and obtains local pressure change data of each boom unit 2 caused by the bending deformation of the auxiliary torsion tube 6 through the real-time monitoring sub-unit 7. The bending change data and the local pressure change data are correlated to form a "bending-local pressure" curve. The real-time monitoring main unit 4 obtains overall pressure change data of each boom unit 2 caused by the bending deformation of the main torsion tube 3. The bending change data and the overall pressure change data are correlated to form a "bending-overall pressure" curve. The high-altitude control unit is consistent with the data of the ground control unit through the wireless communication module.

[0041] The second step is to set the maximum torsional deformation: both the high-altitude control unit and the ground control unit are set with maximum overall torsional deformation and maximum local torsional deformation.

[0042] The third step is normal operation. During the operation, the high-altitude control unit obtains the real-time overall torsional deformation through the real-time monitoring main unit 4 and the real-time local torsional deformation of each pole unit 2 through the real-time monitoring sub-unit 7. If the real-time overall torsional deformation is greater than or equal to the maximum overall torsional deformation, the alarm unit will issue a warning; otherwise, the alarm unit will not activate. Similarly, if the real-time local torsional deformation is greater than or equal to the maximum local torsional deformation, the alarm unit will issue a warning; otherwise, the alarm unit will not activate. However, in actual operation, bending deformation and torsional deformation almost coexist. To avoid bending deformation affecting torsional deformation, the actual operation rule of the high-altitude control unit should be as follows: obtain the real-time overall bending deformation and real-time local bending deformation through the bending stress monitoring unit; based on the above-mentioned "bending-local pressure" curve and "bending-overall pressure" curve, obtain the corrected overall torsional deformation corresponding to the real-time overall bending deformation and the corrected local torsional deformation corresponding to the real-time local bending deformation, respectively; if the real-time overall torsional deformation - the corrected overall torsional deformation ≥ the maximum overall torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate. If the real-time local torsional deformation - the corrected local torsional deformation ≥ the maximum local torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate.

[0043] In the above operations, the power supply unit uses a high-capacity lithium battery, which can power each unit for 1-2 months, meeting the needs of medium- and long-term construction operations. If the power is exhausted, the battery can be replaced with a new one. The alarm unit uses an audible and visual alarm, with a sharp and piercing alarm sound and a flashing alarm light, which is effective in low-light conditions such as at night or on cloudy days.

[0044] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1.A method for monitoring dynamic data of a guyed tower, comprising: a plurality of secondary torsional stress monitoring units, the number of the secondary torsional stress monitoring units being the same as the number of sections of a lattice main guyed tower, the lattice main guyed tower being formed by connecting a plurality of guyed tower units in sequence, and each of the guyed tower units being internally provided with a secondary torsional stress monitoring unit; each of the secondary torsional stress monitoring units comprising a deformable secondary torsional tube installed on the inner side of the corresponding guyed tower unit, the lower end of each of the secondary torsional tubes being provided with a real-time monitoring secondary unit for monitoring the water pressure inside the secondary torsional tube, and the side surface of each of the secondary torsional tubes being fixedly connected to four main angle steels of the corresponding guyed tower unit by a plurality of connecting rods, and the number of the connecting rods between each meter of the main angle steel and the secondary torsional tube being not less than thirty; a main torsional stress monitoring unit comprising a deformable main torsional tube and a real-time monitoring main unit for monitoring the water pressure inside the main torsional tube, the main torsional tube being installed on the inner side of the lattice main guyed tower, the side surface of the main torsional tube being fixedly connected to four main angle steels of the lattice main guyed tower by a plurality of connecting rods, and the number of the connecting rods between each meter of the main angle steel and the main torsional tube being not less than forty; a high-altitude control unit, a power supply unit and an alarm unit, the high-altitude control unit being electrically connected to the power supply unit, the alarm unit, the real-time monitoring secondary unit and the real-time monitoring main unit; the main torsional tube and each of the secondary torsional tubes being filled with a pressure medium; all of the secondary torsional stress monitoring units being annularly distributed, and the main torsional stress monitoring unit being located on the inner side of all of the secondary torsional stress monitoring units; the high-altitude control unit, the power supply unit and the alarm unit being installed on the inner side of the lattice main guyed tower; the upper part and the lower part of the main torsional tube being respectively left-handed and right-handed, or the upper part and the lower part of the main torsional tube being respectively right-handed and left-handed; and all of the secondary torsional tubes having the same shape as the main torsional tube; the real-time monitoring main unit and the real-time monitoring secondary unit having the same structure, each of the real-time monitoring main unit and the real-time monitoring secondary unit comprising a main piston assembly, a secondary piston assembly and a pressure sensor, the end of a main piston rod of the main piston assembly being fixedly connected to the inner side of the lattice main guyed tower through the pressure sensor, the secondary piston assembly comprising a secondary piston barrel and a secondary piston body slidingly connected to the secondary piston barrel, an equal-pressure cavity located on one side of the secondary piston body being in communication with a corresponding main torsional tube or secondary torsional tube, and a pressure-increasing cavity located on the other side of the secondary piston body being in communication with a piston cavity of the main piston assembly; the lower end of the main torsional tube and the lower end of each of the secondary torsional tubes being provided with a fixed sleeve in communication, each of the fixed sleeves being fixed to the inner side of the lattice main guyed tower, and the equal-pressure cavity of each of the secondary piston assemblies being in communication with a corresponding fixed sleeve; a bending stress monitoring unit electrically connected to the high-altitude control unit, the bending stress monitoring unit being connected to the lattice main guyed tower; and a ground control unit wirelessly connected to the high-altitude control unit through a wireless communication module. 9.The method for monitoring dynamic data of a guyed tower according to claim 8, ​ ​ ​ ​ 2. The method of claim 1, wherein: ​ 3. The method of claim 2, wherein: ​ 4. The method of claim 3, wherein: ​ 5. The method of claim 4, wherein: ​ 6. The method of claim 5, wherein: ​ 7. The method of claim 6, wherein: ​ 8. The method of claim 7, wherein: ​ ​ S1. Obtaining Correction Data: The lattice-type main boom bends from its unbent state to its maximum permissible bending state. During this process, the ground control unit obtains bending change data through the bending stress monitoring unit and obtains local pressure change data of each boom unit caused by the bending deformation of the auxiliary torsion tube through the real-time monitoring sub-unit. The bending change data and local pressure change data are correlated to form a "bending-local pressure" curve. The overall pressure change data of each boom unit caused by the bending deformation of the main torsion tube is obtained through the real-time monitoring main unit. The bending change data and overall pressure change data are correlated to form a "bending-overall pressure" curve. The high-altitude control unit is consistent with the data of the ground control unit through the wireless communication module. S2. Set the maximum torsional deformation: Set the maximum overall torsional deformation and the maximum local torsional deformation for both the high-altitude control unit and the ground control unit; S3. Dynamic Monitoring: During operation, the high-altitude control unit obtains the real-time overall torsional deformation of the lattice main boom through the real-time monitoring main unit, and obtains the real-time local torsional deformation of each individual boom through the real-time monitoring sub-unit. If the real-time overall torsional deformation is greater than or equal to the maximum overall torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate. Similarly, if the real-time local torsional deformation is greater than or equal to the maximum local torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate. S4. If bending deformation occurs in S3, the high-altitude control unit obtains the real-time overall bending deformation and real-time local bending deformation through the bending stress monitoring unit. Based on the "bending-local pressure" curve and "bending-overall pressure" curve in S1, it obtains the corrected overall torsional deformation corresponding to the real-time overall bending deformation and the corrected local torsional deformation corresponding to the real-time local bending deformation. If the real-time overall torsional deformation minus the corrected overall torsional deformation is greater than or equal to the maximum overall torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate. If the real-time local torsional deformation minus the corrected local torsional deformation is greater than or equal to the maximum local torsional deformation, the alarm unit issues a warning; otherwise, the alarm unit does not activate.

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