A wire deployment system and monitoring method thereof

Abstract

The present invention relates to a wire deployment system and a monitoring method thereof, wherein the wire deployment system comprises a wire laying pulley (10), a tensioning machine (20) and a background system (30) for controlling the operation of the tensioning machine, wherein the wire laying pulley comprises a bracket (1), a traction wheel (3) rotatably installed in the middle of the bracket through a central axis (2) and wire pulleys (4) arranged side by side on both sides of the traction wheel; the two wire pulleys are both equipped with a laser rangefinder (5) for emitting a laser beam to the bracket, the bracket is a door frame structure, and the laser rangefinder has a sudden change in the distance from the laser beam to the door frame part and the distance to the empty part during the rotation of the wire pulley. The use of the wire laying system and the monitoring method thereof can enable the background system to more accurately and timely monitor the fault of the wire pulley on the wire laying pulley during the wire laying construction process, thereby ensuring the safety of the wire laying construction process.

Description

Technical Field

[0001] The invention relates to the technical field of power line stringing construction equipment, and in particular to a conductor laying system and a monitoring method thereof. Background Art

[0002] During the construction of laying out high-altitude wires, tensioning machines and wire-laying pulleys are used for wiring work. Among them, the tensioning machine usually includes a traction machine and multiple tensioning machines during construction. The traction machine is connected to the guide rope or traction rope, and the tensioning machine is connected to the wire to be erected. The operation of each tensioning machine is controlled by the background system. The wire-laying pulley is a machine used in the construction of power transmission lines. It mainly plays the role of supporting the wires in the construction of high-altitude wires, and smoothly lays the wires to the target position through the wire pulley, thereby reducing the friction of the cables during the wiring process, protecting the cables, and speeding up the construction. The wire-laying pulleys used in construction are usually three-wheeled or five-wheeled wire-laying pulleys with multiple pulleys. The middle pulley is the traction wheel for passing the guide rope or traction rope. The pulleys symmetrically arranged on both sides are wire pulleys, and each wire pulley has a corresponding wire in its chute. Reference Figure 1 , the backend system 30 remotely controls multiple tensioning machines 20, and a guide rope or traction rope is used to simultaneously pull multiple wires through the walking board 40 connected thereto for deployment. When the walking board 40 passes through the wire-laying pulley 10, the walking speed of each wire being pulled is basically the same. When the wire is moving, it will be embedded in the slide groove of the wire pulley, driving the wire pulley to rotate, so each wire pulley basically maintains the same speed. However, during the use of each wire pulley, due to uneven force or force exceeding its allowable load, it may cause slot jumping (two wires jump into the same slide groove), pulley overload deformation, partial jamming between pulleys, or bearing damage, etc., causing the wire pulley speed to slow down or stop rotating. At this time, the pulley speed is inconsistent with the walking speed of the wire, and the friction force on the wire in the slide groove will increase, resulting in wire grinding, damaging the wire and the pulley; when the uneven force on the wire pulley exceeds a certain limit, the wire-laying pulley often explodes due to excessive force, and in severe cases, it will cut the wire, causing serious wire-laying accidents, affecting the life safety of construction workers.

[0003] For the above reasons, the posture of the cable laying pulley needs to be monitored in real time during the cable laying process. By monitoring the speed and stress of the wire pulley of the cable laying pulley, check whether there are abnormal conditions such as the pulley speed slowing down or not turning, jumping grooves, and pulley deformation, so as to promptly notify the construction personnel to shut down the machine to avoid accidents. At present, the monitoring of the state of the cable laying pulley mostly relies on the naked eye observation of the monitoring personnel. This method is easily affected by the weather. In rainy and foggy days, it is difficult for the monitoring personnel to obtain a clear field of vision, resulting in inadequate monitoring. In addition, since the speed and stress of the pulley cannot be directly monitored by the naked eye, the accuracy of the monitoring personnel in judging the speed and stress is low, and the error is large. When the pulley has not yet experienced obvious abnormalities such as jumping grooves and jamming, but the wire pulley is already stressed, or the speeds of the wire pulleys are inconsistent, it is difficult for the monitoring personnel to detect such abnormalities in time. When the pulley is detected to have an abnormality, it is necessary to notify the construction personnel to operate the background system to shut down the tensioning machine, and its response is delayed. If the monitoring personnel fail to detect the abnormal situation of the conductor pulley in time and notify the construction personnel to shut down the machine in time, the conductor or the wire-laying pulley will be damaged. In serious cases, the pulley will explode due to excessive force and even cut the conductor, causing an accident and affecting the life safety of the construction personnel. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a conductor deployment system and a monitoring method thereof. During the conductor deployment construction process, the conductor deployment system can collect data of the conductor pulley on the wire-laying pulley in real time and transmit the data to a background system, so that the background system can more accurately and timely monitor the fault conditions of the conductor pulley on the wire-laying pulley, thereby ensuring the safety of the conductor deployment construction process.

[0005] A conductor deployment system comprises a wire-laying pulley, a tensioning machine and a background system for controlling the operation of the tensioning machine, wherein the wire-laying pulley comprises a bracket and a pulley block rotatably installed in the middle of the bracket via a central axis, wherein the pulley block comprises a traction wheel and wire pulleys arranged side by side on both sides of the traction wheel; laser rangefinders for emitting laser beams to the bracket are installed on the two wire pulleys, and the bracket is a door frame structure. When the laser rangefinder follows the rotation of the wire pulley, the distance from the laser beam to the door frame part and the distance to the empty part change suddenly, and the laser rangefinder signal is connected to the background system, and the background system receives the measurement data sent by the laser rangefinder and controls the operation of the tensioning machine according to the measurement data.

[0006] Preferably, an early warning block protruding toward the laser rangefinder is provided on the inner side of the door frame of the bracket, and the early warning block is slightly deviated from the irradiation point of the laser beam of the laser rangefinder on the bracket in the direction of the center axis. When the wire pulley is overloaded and deformed, the early warning block can block the laser beam emitted by the laser rangefinder.

[0007] Preferably, the warning block deviates from the laser beam irradiation location by a distance of 3-5 mm.

[0008] Preferably, the laser beam emitted by the laser rangefinder is parallel to the central axis direction.

[0009] Preferably, there are two warning blocks located on each side of the bracket, and they are symmetrically distributed along the axis direction of the central axis.

[0010] Preferably, the bracket or wire pulley is equipped with a signal transceiver connected to the laser rangefinder and the background system signal via Bluetooth. The signal transceiver receives measurement data from the laser rangefinder and transmits the measurement data to the background system after processing.

[0011] Preferably, an inclination sensor is installed on the bracket, and the inclination sensor measures the inclination angle between the line-paying pulley and the vertical direction. The inclination sensor is connected to the signal transceiver and the background system via Bluetooth signals. The signal transceiver receives the inclination measurement data from the inclination sensor, and transmits the measurement data to the background system after processing.

[0012] A monitoring method for a conductor deployment system comprises the following steps:

[0013] S1: During the wire deployment process, the laser distance meter on the two wire pulleys of the wire deployment pulley measures the distance according to the time period and transmits the distance measurement data to the background system;

[0014] S2: The background system establishes waveforms corresponding to the two wire pulleys based on the transmitted ranging data, with the receiving time of the ranging data as the horizontal axis and the distance value of the ranging data as the vertical axis, and calculates the rotation speed of the two wire pulleys according to the following formula:

[0015] Rotation speed = half-circle circumference / half-circle time; wherein, half-circle circumference is half-circumference of the wire pulley slot, and half-circle time is the time interval between the rising edge / falling edge of two adjacent rectangular waves in the waveform diagram;

[0016] S3: The background system compares the difference in the rotation speeds of the two conductor pulleys with a preset range; if the difference in the rotation speeds is within the preset range, the wire-paying pulley is judged to be normal, and the background system controls the tensioning machine to continue the wire-paying work; if the difference in the rotation speeds exceeds the preset range, the wire-paying pulley is judged to be abnormal, and the background system controls the tensioning machine to stop working.

[0017] Preferably, in step S2, the background system stores the peak value of the first rectangular wave in the waveform diagram of the two wire pulleys; in step S3, the background system also compares the peak value of the rectangular wave in the waveform diagram, and if the difference with the first peak value is within a preset range, it is judged that the wire pulley corresponding to the waveform diagram is normally stressed, and the background system controls the tensioning machine to continue the wire deployment work; if the difference with the first peak value exceeds the preset range, it is judged that the wire pulley corresponding to the waveform diagram is abnormally stressed, and the background system controls the tensioning machine to stop working.

[0018] Preferably, the time period of the laser rangefinder for measuring distance is 0.4-0.8 seconds.

[0019] The technical effects of the present invention are:

[0020] A laser rangefinder is installed in the wire pulley of the wire laying pulley. The cooperation between the laser rangefinder and the bracket of the door frame structure makes the laser rangefinder follow the rotation of the wire pulley, and the distance from the laser beam to the door frame part and the distance to the free part have a sudden change. The distance is measured according to the set time period, and the distance measurement data is transmitted to the background system. The background system establishes the waveform diagrams corresponding to the two wire pulleys according to the transmitted distance measurement data, with the reception time of the distance measurement data as the horizontal coordinate and the distance value of the distance measurement data as the vertical coordinate.

[0021] During the wire deployment process, the wire pulley rotates driven by the wire in its chute, and the laser rangefinders on the two wire pulleys rotate with the wire pulleys. When the laser beam of the laser rangefinder is directed to the bracket, the laser beam will be blocked and reflected by the door frame of the bracket, and the distance between it and the door frame will be measured. The background system forms the high-level part of the rectangular wave in the waveform, and the distance value is the peak value of the rectangular wave; when the laser beam deviates from the bracket, the laser beam is directed to the empty part outside the bracket, and is not blocked and reflected. At this time, the laser rangefinder does not measure the specific distance value, so the distance measurement data return value obtained by the background system is zero, forming the low-level part of the rectangular wave in the waveform. Since the bracket adopts a door frame structure, every time the wire pulley rotates half a circle, the laser beam of the laser rangefinder that rotates accordingly will be emitted to the bracket. Therefore, the time interval between the rising edges of two adjacent rectangular waves in the waveform diagram, or the time interval between the falling edges of two adjacent rectangular waves, is the time taken by the wire pulley corresponding to the waveform diagram to rotate half a circle. The background system calculates the rotation speed of the two wire pulleys based on this time and the half circumference of the wire pulley groove according to the formula: rotation speed = half a circle circumference / half a circle time.

[0022] The background system monitors the difference in the rotation speeds of the two wire pulleys according to a preset range. When the difference between the rotation speeds of the two wire pulleys is within the preset range, the wire travel speeds in the two wire pulley chutes are basically the same, and the two wire pulleys rotate normally, so it can be judged that the wire-releasing pulley is in a normal state, and the background system controls the tensioning machine to continue the wire laying work; when the difference between the rotation speeds of the two wire pulleys exceeds the preset range, that is, one of the wire pulleys slows down or stops rotating due to an abnormal fault, and the rotation speed of the wire pulley is inconsistent with the travel speed of the wire in its chute, so it can be judged that the wire-releasing pulley is in an abnormal state. After the background system finds this situation, it can promptly control the tensioning machine to stop working, and notify the construction personnel to check and troubleshoot the wire pulley on the wire-releasing pulley, and continue to control the tensioning machine after the troubleshooting is completed, thereby preventing the wire pulley from slowing down or not rotating, causing its rotation speed to be inconsistent with the travel speed of the wire in its chute, resulting in excessive friction on the wire and damage to the wire, so that the background system can monitor the fault of the wire-releasing pulley during the wire laying construction process more accurately and timely, thereby ensuring the safety of the wire laying construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a wire deployment system provided in an embodiment of the present invention.

[0024] Figure 2 It is a structural schematic diagram of a wire-laying pulley provided in an embodiment of the present invention.

[0025] Figure 3 It is a side view of a wire-laying pulley provided in an embodiment of the present invention.

[0026] Figure 4 It is a schematic cross-sectional structural diagram of the upper half of the wire-laying pulley provided in an embodiment of the present invention.

[0027] Figure 5 Schematic diagram of the structure of the wire pulley in the embodiment of the present invention.

[0028] Figure 6 It is a waveform diagram of the measurement data of the laser rangefinder in the embodiment of the present invention.

[0029] Figure 7 It is a schematic cross-sectional structural diagram of a wire-paying pulley equipped with an early warning block in an embodiment of the present invention when the pulley is normal.

[0030] Figure 8 It is a schematic cross-sectional structural diagram of a wire-paying pulley equipped with an early warning block when the pulley is deformed in an embodiment of the present invention.

[0031] Fig. 9 It is a cross-sectional structural schematic diagram of another implementation manner of the wire-laying pulley in an embodiment of the present invention.

[0032] Fig.10 It is a structural schematic diagram of another implementation manner of the wire pulley in the embodiment of the present invention.

[0033] Fig.11 It is another structural schematic diagram of the wire-laying pulley in the embodiment of the present invention.

[0034] Fig.12 It is a schematic diagram of the relationship between the inclination angles of the wire-laying pulley and the walking board in an embodiment of the present invention.

[0035] Markings in the figure: 1- bracket, 2- center axis, 3- traction wheel, 4- conductor pulley, 5- laser rangefinder, 6- early warning block, 7- signal transceiver, 8- inclination sensor, 10- line-paying pulley, 20- tensioning machine, 30- backstage system, 40- walking board, a- rectangular wave when the laser beam of the laser rangefinder is shot at the bracket, b- rectangular wave when the laser beam of the laser rangefinder is blocked by the early warning block, d1- peak value of rectangular wave a, d2- peak value of rectangular wave b, t- time interval between the rising edge / falling edge of two adjacent rectangular waves, θ1- inclination angle of the line-paying pulley, θ2- inclination angle of the walking board. DETAILED DESCRIPTION

[0036] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, horizontal, vertical, counterclockwise, clockwise, radial, axial, etc.), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] like Figures 1 to 5As shown, an embodiment of the present invention provides a conductor deployment system, including a wire-laying pulley 10, a tensioning machine 20, and a background system 30 for controlling the operation of the tensioning machine 20. The wire-laying pulley 10 includes a bracket 1, and a pulley group rotatably installed in the middle of the bracket 1 through a central axis 2, the pulley group includes a traction wheel 3 and a wire pulley 4 arranged side by side on both sides of the traction wheel 3; the two wire pulleys 4 are both equipped with a laser rangefinder 5 for emitting a laser beam to the bracket 1, the bracket 1 is a door frame structure, and the laser rangefinder 5 has a sudden change in the distance from the laser beam to the door frame part and the distance to the empty part during the process of following the rotation of the wire pulley 4. The laser rangefinder 5 signal is connected to the background system 30, and the background system 30 receives the measurement data sent by the laser rangefinder 5 and controls the operation of the tensioning machine 20 according to the measurement data.

[0039] The background system 30 can use the Internet of Things to achieve the reception of measurement data and the control of the working state of the tensioning machine 20, or other methods, which are not limited in this embodiment. The receiving carrier of the background system 30 can be an industrial computer, a computer, etc., which are well known in life, and will not be described in detail here. As long as the wire deployment system of the present invention can achieve the above-mentioned functions of controlling the work of the tensioning machine 20 and receiving measurement data, it is ensured that the fault of the wire pulley 4 on the wire-laying pulley 10 can be accurately and timely monitored.

[0040] refer to Figure 2 and Figure 3 The wire-laying pulley 10 shown in the figure has a bracket 1 of a door frame structure. The wire-laying pulley 10 is rotatably installed with a pulley block through a central axis 2. The pulley block includes three pulleys, wherein the pulley in the middle is a traction wheel 3. During the wiring construction, a guide rope or a traction rope passes through the slide groove of the traction wheel 3. The pulleys symmetrically arranged side by side on both sides of the traction wheel 3 are conductor pulleys 4. During the wiring construction, each conductor pulley 4 has a corresponding slide groove in it, so that the conductor passes through the slide groove of the conductor pulley 4.

[0041] like Figure 4 As shown, in this embodiment, the two wire pulleys 4 are both equipped with a laser rangefinder 5 that emits a laser beam to the bracket 1. When the wire pulley 4 rotates, the laser rangefinder 5 can rotate accordingly. Figure 3The side view of the wire-laying pulley 10 shown in the figure shows that the cooperation between the laser rangefinder 5 and the bracket 1 of the door frame structure makes the laser rangefinder 5 measure a sudden change between the distance to the door frame part and the distance to the empty part during the process of following the rotation of the wire pulley 4, that is, the laser beam emitted by the laser rangefinder 5 will alternate between being directed toward the bracket 1 and deviating from the bracket 1, thus repeating the cycle. When the laser beam emitted by the laser rangefinder 5 changes from being deviated from the bracket 1 to being directed toward the bracket 1, the distance value measured by the laser rangefinder 5 suddenly changes from the distance to the empty part to the distance to the bracket 1 of the door frame structure. Since the bracket 1 adopts the following method, the distance value measured by the laser rangefinder 5 suddenly changes from the distance to the empty part to the distance to the bracket 1 of the door frame structure. Figure 3 and Figure 4 The door frame structure shown, therefore, when the laser beam emitted by the laser rangefinder 5 changes from deviating from the bracket 1 to being directed toward the bracket 1 for the next time, it corresponds to the wire pulley 4 rotating half a circle. Accordingly, when the laser beam emitted by the laser rangefinder 5 changes from being directed toward the bracket 1 to being deviated from the bracket 1 twice in a row, that is, the distance value measured by the laser rangefinder 5 suddenly changes from the distance to the bracket 1 of the door frame structure to the distance to the empty part, it corresponds to the wire pulley 4 rotating half a circle.

[0042] In this embodiment, reference Figure 5 , the laser rangefinder 5 can be installed and fixed on the inner rib of the wire pulley 4, so that the length of the laser rangefinder 5 from the center of the wire pulley 4 is greater than the width of the side of the door frame structure bracket 1. Of course, the laser rangefinder 5 can also be installed at other positions on the wire pulley 4, as long as it is ensured that the position where the laser rangefinder 5 is installed can achieve the above-mentioned distance measurement requirements, so that the laser rangefinder 5 rotates with the wire pulley 4, and its laser beam alternates between being directed toward the bracket 1 and deviating from the bracket 1, and there is a sudden change between the distance measured by the laser beam to the door frame part and the distance to the empty part.

[0043] This embodiment cooperates with the above-mentioned wire spreading system to provide a monitoring method of the wire spreading system, including the following steps:

[0044] S1: During the wire deployment process, the laser rangefinder 5 on the two wire pulleys 4 of the wire deployment pulley 10 measures the distance according to the time period and transmits the distance measurement data to the background system 30;

[0045] S2: The background system 30 establishes waveform diagrams corresponding to the two wire pulleys 4 according to the transmitted distance measurement data, with the reception time of the distance measurement data as the horizontal coordinate and the distance value of the distance measurement data as the vertical coordinate, and calculates the rotation speed of the two wire pulleys 4 according to the following formula:

[0046] Rotation speed = half-circle circumference / half-circle time; wherein, half-circle circumference is half-circle of the guide pulley 4 slot, and half-circle time is the time interval between the rising edge / falling edge of two adjacent rectangular waves in the waveform diagram;

[0047] S3: Compare the difference in the rotational speeds of the two wire pulleys 4 with a preset range; if the difference in the rotational speeds is within the preset range, the wire-paying pulley 10 is judged to be normal, and the background system 30 controls the tensioning machine 20 to continue the wire-laying work; if the difference in the rotational speeds exceeds the preset range, the wire-paying pulley 10 is judged to be abnormal, and the background system 30 controls the tensioning machine 20 to stop working.

[0048] The laser rangefinder 5 described in this embodiment has the characteristics of real-time monitoring and accurate measurement, and performs distance measurement by emitting a laser beam. For step S1, before using the laser rangefinder 5, it is necessary to set the time period for each laser rangefinder 5 to emit a laser beam for distance measurement to be short enough to achieve millisecond-level accuracy, and the shortest time period can be up to 0.4 seconds, to ensure that the laser rangefinder 5 can collect measurement data in real time and avoid missed data detection, and a sufficiently short time period can ensure that when the distance measurement data forms a waveform diagram in the background system 30, its waveform is close to a continuous rectangular wave, which is conducive to the background system 30 in the above-mentioned monitoring method to more accurately determine the time corresponding to the rising edge / falling edge of the waveform.

[0049] Preferably, the time period of the distance measurement by the laser rangefinder 5 is 0.4-0.8 seconds.

[0050] During the wire deployment construction, the wire pulley 4 rotates driven by the wire in its chute, and the laser rangefinders 5 on the two wire pulleys 4 measure the distance according to the set time period and transmit the distance measurement data to the background system 30. Since the side of the wire pulley 4 is basically parallel to the side of the bracket 1, the distance measured by the laser rangefinder 5 during the rotation of the wire pulley 4 is basically consistent, and the high level part of the waveform diagram formed in step S2 by the background system 30 maintains the same peak value, forming a rectangular wave, such as Figure 6 shown.

[0051] When the laser rangefinder 5 rotates with the wire pulley 4, the laser beam it emits will alternate between being directed toward the bracket 1 and being deviated from the bracket 1; when the laser beam is directed toward the bracket 1, it will be blocked and reflected by the door frame of the bracket 1, and the laser beam measures the distance to the door frame of the bracket 1. The distance measurement data is transmitted to the background system 30, and the high level part of the rectangular wave is formed in the waveform diagram. The distance value is the peak value of the rectangular wave, that is, the corresponding Figure 6 The peak value d1 of the high level part of the rectangular wave a in the waveform; when the laser beam deviates from the bracket 1, the laser beam is directed to the empty part outside the bracket 1 and is not blocked and reflected. At this time, the laser rangefinder 5 does not measure a specific distance value, so the distance measurement data return value obtained by the background system 30 is zero, forming the low level part of the rectangular wave in the waveform, which corresponds to Figure 6 The low level part of rectangular wave a in the waveform.

[0052] In step S2, the background system 30 calculates the rotational speed of the two wire pulleys 4 according to the established waveform diagram of the two wire pulleys 4 according to the following formula: rotational speed = half-circle circumference / half-circle time; wherein, the half-circle circumference is the half-circle length of the guide groove of the wire pulley 4, and the half-circle time is the time interval between the rising edge / falling edge of two adjacent rectangular waves in the waveform diagram.

[0053] Since the bracket 1 adopts a door frame structure, when the wire pulley 4 rotates half a circle, the laser beam of the laser rangefinder 5 that rotates accordingly will be emitted to the bracket 1. Therefore, the time interval between the rising edges of two adjacent rectangular waves in the waveform diagram, or the time interval between the falling edges of two adjacent rectangular waves, is the time taken by the wire pulley 4 corresponding to the waveform diagram to rotate half a circle. Figure 6 , the time t between two adjacent rising edges of the peak value d1 in the rectangular wave a is the time taken by the corresponding wire pulley 4 to rotate half a circle, which is the half-circle time required in the formula. Of course, the half-circle time can also be Figure 6 The time interval between the falling edges of two adjacent rectangular waves a in the figure is the time interval between the falling edges of the two adjacent rectangular waves a. The half-circle time obtained in this way is also the time taken for the corresponding wire pulley 4 to rotate half a circle. The backend system 30 calculates the rotation speed of the two wire pulleys 4 according to the above formula based on the obtained time t and the half circumference of the guide groove of the wire pulley 4.

[0054] In step S3, the background system 30 compares the difference in rotational speed of the two wire pulleys 4 with a preset range to determine whether the rotational speeds of the two wire pulleys 4 are substantially consistent, wherein the preset range needs to be set in advance in the background system 30, and the preset range is used to reduce the situation where the background system 30 falsely reports a fault due to a slight difference in rotational speed of the two wire pulleys 4, and the specific numerical range is not limited in this solution.

[0055] When the difference in the rotation speeds of the two wire pulleys 4 is within a preset range, the wire travel speeds in the chutes of the two wire pulleys 4 are basically the same, and the two wire pulleys 4 rotate normally, so it can be determined that the wire-releasing pulley 10 is in a normal state, and the background system 30 controls the tensioning machine 20 to continue the wire-releasing work; when the difference in the rotation speeds of the two wire pulleys 4 exceeds the preset range, that is, one of the wire pulleys 4 has an abnormal fault that causes its rotation speed to slow down or stop, at this time, the rotation speed of the wire pulley 4 is inconsistent with the travel speed of the wire in its chute, so it can be determined that the wire-releasing pulley 10 is in an abnormal state. After the background system 30 finds this situation, it can promptly control the tensioning machine 20 to stop working, and notify the construction personnel to check and troubleshoot the wire pulley 4 on the wire-laying pulley 10. After the troubleshooting is completed, the tensioning machine 20 will continue to be controlled to work, thereby preventing the wire pulley 4 from slowing down or not rotating, causing its rotation speed to be inconsistent with the walking speed of the wire in its chute, resulting in excessive friction on the wire and causing damage to the wire. In the process of wire laying construction, the background system 30 monitors the fault of the wire-laying pulley 10 more accurately and timely, ensuring the safety of the wire laying construction process.

[0056] The power supply method of the laser rangefinder 5 is not specifically limited in this solution. Optionally, the laser rangefinder 5 can be powered by a built-in battery, and a generator charging device can also be installed on the wire-laying pulley 10, and the charging device converts the mechanical energy brought by the rotation of the pulley block on the wire-laying pulley 10 into electrical energy to charge the built-in battery. The use of this structure can reduce the frequent disassembly of the wire-laying pulley 10 to replace the battery due to battery failure, making the configuration more convenient and reasonable. Of course, the power supply method for the laser rangefinder 5 in this solution can also be other, as long as it can power the laser rangefinder 5 and ensure its normal operation.

[0057] As a further improvement of this embodiment, Figure 7 and Figure 8 As shown, an early warning block 6 protruding toward the laser rangefinder 5 is provided on the inner side of the door frame of the bracket 1, and the early warning block 6 slightly deviates from the irradiation position of the laser beam of the laser rangefinder 5 on the bracket 1 in the direction of the central axis 2. When the wire pulley 4 is overloaded and deformed, the early warning block 6 can block the laser beam emitted by the laser rangefinder 5. When the wire pulley 4 is unevenly stressed or the stress exceeds its allowable load, the wire pulley 4 will be overloaded and deformed, and the outer periphery of its chute will be radially offset, causing damage to the wire-releasing pulley 10. Therefore, the early warning block 6 on the inner side of the door frame of the bracket 1 cooperates with the laser rangefinder 5 to accurately and timely monitor the deformation of the wire pulley 4.

[0058] When setting the warning block 6, refer to Figure 7 and Figure 8According to the allowable load and force characteristics of the wire pulley 4, the position of the warning block 6 installed on the inner side of the door frame of the bracket 1 is determined so that it is slightly deviated from the laser beam irradiation point in the direction of the central axis 2 to ensure that the wire pulley 4 is in a normal state. Figure 7 As shown, the laser beam emitted by the laser rangefinder 5 can reach the door frame portion of the bracket 1 without being blocked by the warning block 6; after the wire pulley 4 is deformed, as shown in FIG. Figure 8 As shown, the laser rangefinder 5 is radially offset inward along with the deformed wire pulley 4, and at this time, the warning block 6 can block the laser beam emitted by the laser rangefinder 5. The warning block 6 has a certain thickness, and the specific thickness is not limited in this solution, as long as the distance between the laser rangefinder 5 and the warning block 6 is less than the distance between the laser rangefinder 5 and the door frame part of the bracket 1.

[0059] During the wire laying process, the laser rangefinder 5 rotates with the wire pulley 4. When the wire pulley 4 is in a normal state, Figure 7 As shown, the wire pulley 4 is not deformed, and the laser beam of the laser rangefinder 5 will not be blocked by the warning block 6 when it is directed to the door frame part of the bracket 1. At this time, the distance measured by the laser rangefinder 5 is the distance between the laser rangefinder 5 and the door frame part of the bracket 1; when the wire pulley 4 is deformed due to exceeding its allowable load, as shown in FIG. Figure 8 As shown, the laser rangefinder 5 on the wire pulley 4 is offset in the deformation direction, i.e., radially. When the laser beam of the laser rangefinder 5 is directed toward the bracket 1, it will be blocked by the warning block 6. At this time, the distance measured by the laser rangefinder 5 is the distance between the laser rangefinder 5 and the warning block 6. The ranging data is transmitted to the background system 30. The background system 30 establishes waveform diagrams corresponding to the two wire pulleys 4 according to the transmitted ranging data, with the receiving time of the ranging data as the horizontal coordinate and the distance value of the ranging data as the vertical coordinate.

[0060] As a further improvement of this embodiment, in step S2 of the monitoring method of the wire deployment system, after establishing the waveform diagram, the background system 30 stores the peak value of the first rectangular wave in the waveform diagram of the two wire pulleys 4; in step S3, the background system 30 also compares the peak value of the rectangular wave in the waveform diagram with the first peak value. Figure 6, wherein the peak value d1 of the first rectangular wave a is the distance between the laser rangefinder 5 and the door frame part of the bracket 1 when the corresponding wire pulley 4 is under normal stress, and the background system 30 uses this peak value as a reference value for subsequent comparison. In step S3, the background system 30 calculates the difference between the peak value of the rectangular wave obtained each time in each waveform diagram and the first peak value stored, and compares the difference with the preset range to monitor the stress condition of the wire pulley 4, wherein the preset range needs to be set in advance in the background system 30, and the preset range is used to reduce the situation where the background system 30 is falsely reported due to only a slight difference between the two peak values, and its specific numerical range is not limited in this solution.

[0061] refer to Figure 6 , when the difference between the peak value of the rectangular wave and the first peak value is within the preset range, that is, the peak value of the rectangular wave a in the figure remains at d1, and the difference is basically maintained at a small value and within the preset range, the laser beam can be directed to the door frame part of the bracket 1 without being blocked by the warning block 6, such as Figure 7 As shown, the background system 30 determines that the wire pulley 4 corresponding to the waveform diagram is normally stressed and not deformed, and the background system 30 controls the tensioning machine 20 to continue the wire deployment work; when the difference between the peak value of the rectangular wave and the first peak value exceeds the preset range, that is, the rectangular wave in the figure will change from the shape of a to the shape of b shown by the dotted line, and the peak value will change from d1 to d2. Since d2 is obviously smaller than the first peak value d1, the difference will change greatly, causing it to exceed the preset range. At this time, the laser beam is blocked by the warning block 6, as shown in FIG. Figure 8 As shown, the background system 30 determines that the conductor pulley 4 corresponding to the waveform diagram is abnormally stressed, promptly controls the tensioning machine 20 to stop working, and notifies the construction personnel to check and confirm whether the corresponding conductor pulley 4 on the wire-releasing pulley 10 is in a deformed state due to the force exceeding the allowable load, so as to avoid the conductor pulley 4 continuing to work in a deformed state and causing damage to the wire-releasing pulley 10 and the conductor. This allows the background system 30 to monitor the stress condition of the conductor pulley 4 more accurately and timely during the construction process, thereby ensuring the safety of the construction process.

[0062] Preferably, the distance between the warning block 6 and the laser beam irradiation point in this embodiment is 3-5 mm. Setting this distance can not only enable the background system 30 to accurately monitor the deformation of the wire pulley 4, but also reduce the situation where the background system 30 is falsely reported a fault due to the normal slight deformation of the wire pulley 4 caused by external disturbances or misoperation, thereby improving the accuracy of the background system 30 in monitoring the wire-laying pulley 10.

[0063] Preferably, Figure 4As shown, the laser beam emitted by the laser rangefinder 5 is parallel to the direction of the central axis 2. This installation structure ensures that during the rotation of the wire pulley 4, the laser beam emitted by the laser rangefinder 5 is perpendicular to the side of the bracket 1, so that the distance value measured by the laser rangefinder 5 is closer to the distance between the wire pulley 4 and the side of the bracket 1, which is convenient for setting the position of the early warning block 6 away from the laser beam irradiation position, reducing the measurement error, and facilitating the direct reading of the distance between the wire pulley 4 and the side of the bracket 1 from the background system 30.

[0064] Preferably, Fig. 9 As shown, the number of the warning blocks 6 located on each side of the bracket 1 is two, and they are symmetrically distributed along the axis direction of the central axis 2. With this installation structure, when the wire pulley 4 is deformed to cause the laser rangefinder 5 to deviate radially inward, the distance data measured by the laser rangefinder 5 every half a circle is the distance between the laser rangefinder 5 and the warning block 6, ensuring that the obtained measurement data is unified. Figure 6 As shown, the peak value of the formed rectangular wave b is maintained at d2, which facilitates the background system 30 to analyze and process the data.

[0065] Preferably, there are two or more laser rangefinders 5 located on the same wire pulley 4, which are respectively installed at different positions of the same wire pulley 4. Fig.10 As shown, in this embodiment, two laser rangefinders 5 are installed in different directions on the wire pulley 4. Of course, the number of laser rangefinders 5 can also be other, and the specific orientation of the installation can be set according to the actual situation, as long as it is ensured that when each installed laser rangefinder 5 rotates with the wire pulley 4, its laser beam measures a sudden change in the distance to the door frame part and the distance to the empty part. Other laser rangefinders 5 are installed at other different directions of the wire pulley 4, and cooperate with the early warning block 6. The measurement data of each laser rangefinder 5 is transmitted to the background system 30, so that the background system 30 forms multiple waveforms corresponding to one wire pulley 4 and monitors it, which can more accurately monitor the deformation of the wire pulley 4 in different directions, avoid the background system 30 from missing the deformation of the wire pulley 4 in a certain direction, and further ensure the construction safety.

[0066] Preferably, the bracket 1 in this embodiment is a channel steel bracket. Channel steel is a long steel strip with a groove-shaped cross section. Since its cross-sectional shape is a groove-shaped, the channel steel bracket adopting this structure has the characteristics of simple structure and light weight, and is easy to process, transport and install during construction, with low cost. The channel steel bracket also has the characteristics of high strength, high rigidity and corrosion resistance, and can withstand large load external forces, extend the service life of the line-laying pulley 10, and further improve the safety of construction.

[0067] As a further improvement of this embodiment, a signal transceiver 7 connected to the laser rangefinder 5 and the background system 30 is installed on the bracket 1 or the wire pulley 4. The signal transceiver 7 receives the measurement data from the laser rangefinder 5 and transmits the measurement data to the background system 30 after processing. The specific installation position of the signal transceiver 7 in this embodiment can be referred to Figure 2 and Figure 3 As shown, the signal transceiver 7 is installed at the position where the bracket 1 is connected to the central axis 2. Of course, the signal transceiver 7 can also be installed at other positions of the bracket 1, or on the wire pulley 4, as long as the functions of receiving and forwarding can be realized. In order to make the monitored data more accurate, the measurement data signal of the laser rangefinder 5 can be received by the signal transceiver 7, and the collected data signal can be amplified and processed in the signal transceiver 7, and then transmitted to the background system 30 in real time, so that the data received by the background system 30 is clear and accurate enough to ensure that its monitoring work on the wire pulley 10 is accurate and timely. In this embodiment, the specific internal structure of the signal transceiver 7 is not limited, as long as the above functions can be realized.

[0068] In the embodiment of the present invention, the laser rangefinder 5 and the signal transceiver 7 and the background system 30 can transmit data wirelessly. The wireless method can be specifically to transmit each measurement data through WIFI, Bluetooth, wireless network, 4G or 5G mobile network, etc., which will not be described here, as long as each measurement data can be accurately transmitted in the present invention. Preferably, the transmission method is specifically a Bluetooth transmission method in this embodiment. The Bluetooth method is applicable to a large number of devices, and the cost and power consumption are low. Therefore, the Bluetooth transmission module can be uniformly installed and used in each laser rangefinder 5 in the present invention, reducing the production cost of the line-laying pulley 10, ensuring that the transmission method of each laser rangefinder 5 is consistent, and reducing the power consumption of the device, and extending the service life of the built-in battery of the device. In addition, since the Bluetooth method has strong security and anti-interference ability, it can ensure high transmission quality and efficiency. Therefore, the use of the Bluetooth method in the present invention can effectively reduce the signal interference between each laser rangefinder 5, as well as the signal interference from other communication devices in the construction environment, improve the accuracy and timeliness of the data, and is suitable for complex line construction environments.

[0069] As another improvement of this embodiment, Fig.11 As shown, a tilt sensor 8 is installed on the bracket 1 of the wire-laying pulley 10. The tilt sensor 8 measures the tilt angle between the wire-laying pulley 10 and the vertical direction. The tilt sensor 8 is connected to the signal transceiver 7 and the background system 30. The signal transceiver 7 receives the tilt angle measurement data from the tilt sensor 8 and transmits the measurement data to the background system 30 after processing. When the wire-laying pulley 10 is used as a corner pulley, Fig.12As shown, both the wire-laying block 10 and the walking board 40 need to have a certain inclination angle with the vertical direction. When in use, it is necessary to ensure that the inclination angle θ1 of the wire-laying block 10 is consistent with the inclination angle θ2 of the walking board 40, so that the walking board 40 can pass through the wire-laying block 10 and the wire pulled by it can fall on the corresponding wire pulley 4. In order to more accurately monitor the inclination of the block, an inclination sensor 8 can be installed on the bracket 1 of the wire-laying block 10. The inclination sensor 8 is used to measure the inclination angle θ1 of the wire-laying block 10 in real time. The inclination data is received by the signal transceiver 7, amplified and forwarded to the background system 30, so that the background system 30 can accurately monitor the inclination of the wire-laying block 10.

[0070] The backend system 30 compares the received inclination angle θ1 of the pay-out block 10 with the pre-stored inclination angle θ2 of the walking board 40, specifically, calculates the difference between the two inclination angles, and compares the difference with a preset range. When the wire-paying pulley 10 is in a normal state, the inclination angle θ1 of the wire-paying pulley 10 is basically consistent with the inclination angle θ2 of the walking plate 40, and the difference is within the preset range at this time, and the background system 30 controls the tensioning machine 20 to continue working; when the wire-paying pulley 10 is offset, so that the inclination angle θ1 of the wire-paying pulley 10 is greatly different from the inclination angle θ2 of the walking plate 40, the difference will exceed the preset range at this time, and the background system 30 determines that the wire-paying pulley 10 has tipped over abnormally, and can promptly control the tensioning machine 20 to stop, and notify the construction personnel to check and troubleshoot the inclination angle of the wire-paying pulley 10, so as to avoid the situation where the walking plate 40 cannot pass through the wire-paying pulley 10 due to the inconsistency between the inclination angle θ1 of the wire-paying pulley 10 and the inclination angle θ2 of the walking plate 40, so as to make the monitoring of the inclination angle more accurate and timely, improve the construction efficiency, and prevent the walking plate 40 from tipping over due to inconsistent inclination angles and causing accidents, thereby ensuring the safety of the construction process.

[0071] In this embodiment, the specific installation position and internal structure of the inclination sensor 8 are not limited. The inclination sensor 8 can refer to Fig.11 The position of the bracket 1 can be installed on the side of the bracket 1, or it can be installed in other positions as long as the above functions can be achieved.

[0072] The power supply method of the inclination sensor 8 is not specifically limited in this solution. Optionally, the inclination sensor 8 can be powered by a built-in battery, and a generator charging device can also be installed on the wire-laying pulley 10. The charging device converts the mechanical energy brought by the rotation of the pulley block on the wire-laying pulley 10 into electrical energy to charge the built-in battery. With this structure, the operation of frequently replacing the battery of the inclination sensor 8 due to battery exhaustion can be reduced, making the configuration more convenient and reasonable. Of course, the power supply method of the inclination sensor 8 in this solution can also be other, as long as it can power the inclination sensor 8 and ensure its normal operation.

[0073] In the embodiment of the present invention, the data transmission mode of the inclination sensor 8 can be a common wireless mode. Preferably, the data transmission mode of the inclination sensor 8 is specifically a Bluetooth transmission mode. The use of the Bluetooth mode can reduce the power consumption of the inclination sensor 8, extend the service life of its built-in battery, and effectively reduce the signal interference between the inclination sensor 8 and other laser rangefinders 5, as well as the signal interference from other communication devices in the construction environment, improve the accuracy and timeliness of the data, and is suitable for complex wiring construction environments.

[0074] The above are only some embodiments of the present invention, and the protection scope of the patent of the present invention is not limited thereto. Those skilled in the art can make non-substantial changes or substitutions based on the present invention, which still fall within the protection scope of the patent of the present invention.

Claims

1. A conductor deployment system, comprising a wire-laying pulley (10), a tensioning machine (20), and a background system (30) for controlling the operation of the tensioning machine (20), wherein the wire-laying pulley (10) comprises a bracket (1), and a pulley block rotatably mounted in the middle of the bracket (1) via a central axis (2), wherein the pulley block comprises a traction wheel (3) and conductor pulleys (4) arranged side by side on both sides of the traction wheel (3); the characteristics are as follows: The two wire pulleys (4) are both equipped with a laser rangefinder (5) for emitting a laser beam toward the bracket (1); the bracket (1) is a door frame structure; when the laser rangefinder (5) follows the rotation of the wire pulley (4), the distance between the laser beam of the laser rangefinder (5) and the door frame portion and the distance to the remaining portion change suddenly; the laser rangefinder (5) is connected to the background system (30) by signal; the background system (30) receives the measurement data sent by the laser rangefinder (5) and controls the operation of the tensioning machine (20) according to the measurement data; An early warning block (6) protruding in the direction of the laser rangefinder (5) is arranged on the inner side of the door frame of the bracket (1); the early warning block (6) is slightly deviated from the irradiation position of the laser beam of the laser rangefinder (5) on the bracket (1) in the direction of the central axis (2); when the wire pulley (4) is overloaded and deformed, the early warning block (6) can block the laser beam emitted by the laser rangefinder (5).

2. The conductor deployment system according to claim 1, characterized in that: The distance between the early warning block (6) and the laser beam irradiation point is 3-5 mm.

3. The conductor deployment system according to claim 1, characterized in that: The laser beam emitted by the laser rangefinder (5) is parallel to the direction of the central axis (2).

4. The conductor deployment system according to claim 1, characterized in that: The number of the early warning blocks (6) located on each side of the bracket (1) is two, and they are symmetrically distributed along the axial direction of the central axis (2).

5. The conductor deployment system according to any one of claims 1 to 4, characterized in that: The support (1) or the wire pulley (4) is provided with a signal transceiver (7) which is connected to the laser rangefinder (5) and the background system (30) by means of Bluetooth. The signal transceiver (7) receives measurement data from the laser rangefinder (5) and transmits the measurement data to the background system (30) after processing.

6. The conductor deployment system according to claim 5, characterized in that: The bracket (1) is provided with an inclination sensor (8), and the inclination sensor (8) measures the inclination angle between the line-laying pulley (10) and the vertical direction. The inclination sensor (8) is connected to the signal transceiver (7) and the background system (30) via Bluetooth signals. The signal transceiver (7) receives the inclination angle measurement data from the inclination sensor (8), and transmits the measurement data to the background system (30) after processing.

7. A method for monitoring a conductor deployment system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: During the wire deployment process, the laser distance meter (5) on the two wire pulleys (4) of the wire deployment pulley (10) measures the distance according to the time period and transmits the distance measurement data to the background system (30); S2: The backend system (30) establishes waveform diagrams corresponding to the two wire pulleys (4) according to the transmitted distance measurement data, with the reception time of the distance measurement data as the horizontal coordinate and the distance value of the distance measurement data as the vertical coordinate, and calculates the rotation speed of the two wire pulleys (4) according to the following formula: rotation speed = half-circle circumference / half-circle time; wherein the half-circle circumference is the half-circle length of the guide groove of the wire pulley (4), and the half-circle time is the time interval between the rising edge / falling edge of two adjacent rectangular waves in the waveform diagram; The background system (30) stores the peak value of the first rectangular wave in the waveform diagram of the two wire pulleys (4); S3: the backend system (30) compares the difference in rotation speeds of the two wire pulleys (4) with a preset range; if the difference in rotation speeds is within the preset range, it is determined that the wire-releasing pulley (10) is normal, and the backend system (30) controls the tensioning machine (20) to continue the wire-releasing operation; if the difference in rotation speeds exceeds the preset range, it is determined that the wire-releasing pulley (10) is abnormal, and the backend system (30) controls the tensioning machine (20) to stop operating; The backend system (30) also compares the peak value of the rectangular wave of the waveform diagram. If the difference with the first peak value is within a preset range, it is judged that the wire pulley (4) corresponding to the waveform diagram is normally stressed, and the backend system (30) controls the tensioning machine (20) to continue the wire deployment operation; if the difference with the first peak value exceeds the preset range, it is judged that the wire pulley (4) corresponding to the waveform diagram is abnormally stressed, and the backend system (30) controls the tensioning machine (20) to stop working.

8. A monitoring method for a conductor deployment system according to claim 7, characterized in that: The time period of the distance measurement of the laser rangefinder (5) is 0.4-0.8 seconds.

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