Power transmission line six-bundled conductor portable wiring device verification device and power transmission line six-bundled conductor portable wiring device verification method

Abstract

The invention discloses a power transmission line six-bundle conductor portable wiring device verification device and method, and the device consists of a simulation conductor supporting unit, a load applying unit, a motion detection unit, and a data processing unit. The tension environment of a real line is simulated through a tension adjusting mechanism composed of a stepping motor, a trapezoidal lead screw and a tension sensor; the load applying unit simulates the weight of an operator through a standard weight and a symmetric bearing frame, and cooperates with a pressure sensor and an attitude sensor to monitor the structural stability. The verification method covers rated load, overload and sliding smoothness tests; the running speed uniformity deviation is accurately calculated through a formula by collecting the running stroke, the rotating speed of the power wheel and the attitude angle. According to the invention, the working condition of the six-bundle conductor is verified, the bearing safety and the operation stability of the wiring device can be comprehensively evaluated, and reliable technical guarantee is provided for high-altitude comprehensive inspection operation.

Description

Technical Field

[0001] This invention relates to the field of power transmission line operation and maintenance equipment verification technology, and in particular to a portable cable routing device and method for verifying six-split conductors of power transmission lines. Background Technology

[0002] As a key facility for long-distance power transmission, the reliable operation of 750kV overhead transmission lines is of great significance to the construction of the energy internet. The portable six-split conductor cable runner, as a core auxiliary device for comprehensive inspection and defect elimination of transmission lines, can support workers walking along the conductors, significantly reducing labor intensity and improving work efficiency. However, in high-altitude operations, the cable runner must bear the weight of workers and tools while smoothly moving along the conductors to reach defect points. Its rated load-bearing capacity and smooth sliding performance directly affect operational safety and work efficiency.

[0003] In the current technology, research on manned auxiliary cable routing devices for six-split conductors is in its early stages, lacking targeted verification techniques and devices. Traditional cable routing device verification often employs general mechanical verification methods, which do not fully consider the distribution characteristics of six-split conductors, the load characteristics of high-altitude operations, and obstacle environments, leading to significant deviations between verification results and actual working conditions. If the rated load-bearing capacity of the cable routing device is insufficient, it may cause safety accidents such as support deformation and wheel system failure; if the sliding smoothness is poor, problems such as operational jamming and excessive power loss may occur, affecting the smooth progress of comprehensive inspection work. Therefore, there is an urgent need for a verification method and device that can simulate actual working conditions and accurately detect rated load and sliding smoothness to ensure the safe and reliable operation of the cable routing device. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a portable cable routing device and method for verifying six-split conductors of power transmission lines.

[0005] To achieve the objectives of this invention, the technical solution adopted is as follows: A portable cable routing device for six-split conductors of transmission lines is provided, comprising a simulated conductor support unit, a load application unit, a motion detection unit, and a data processing unit. The simulated conductor support unit includes two simulated conductors arranged in parallel, and tension adjustment mechanisms are provided at both ends of the simulated conductors; The load application unit includes a load-bearing frame detachably connected to the cable carrier platform, and a weight adjustment module and a pressure sensor mounted on the load-bearing frame. The motion detection unit includes position sensors installed at both ends of the simulated wire support unit, speed sensors installed on the drive wheel shaft of the cable tray, and attitude sensors for acquiring the operating posture of the cable tray. The position sensors are used to record the running stroke of the cable tray, the speed sensors are used to detect the rotation speed and uniformity of the drive wheel, and the attitude sensors are used to monitor the tilt angle of the cable tray during operation. The data processing unit is connected to the load application unit and the motion detection unit, and includes a data acquisition module, a data analysis module and a result output module. The data acquisition module is used to receive the detection data from each sensor, the data analysis module is used to analyze and process the rated load data and sliding operation data, and the result output module is used to output a verification report.

[0006] Furthermore, steel-cored aluminum stranded wire with the same diameter as the actual conductor is used as the simulated conductor, and the spacing is set to match the actual spacing between the two conductors above the six-split conductor. The length of the simulated conductor is adjustable.

[0007] Furthermore, the tension adjustment mechanism includes a set of horizontally arranged channel steel guide rails, a sliding slider, a trapezoidal lead screw, a stepper motor, and a tension sensor; The main body of the mechanism includes a set of horizontally arranged channel steel guide rails with a sliding slider embedded inside. The end of the wire is fixed on the sliding slider, and the slider runs in the channel steel rail. One end of the simulated wire is fixed to one end of the bracket, and the other end is connected to the slider of the tension adjustment mechanism through a wedge clamp. The stepper motor is connected to the trapezoidal lead screw via a coupling. The stepper motor drives the lead screw to travel, and the lead screw drives the slider to move backward. The tension is automatically locked after the motor stops by utilizing the self-locking property of the lead screw thread. A tension sensor is connected in series at the connection between the slider and the lead screw to provide real-time feedback on the current tension value. The data processing unit reads the data from the tension sensor, and the stepper motor stops adjusting when the displayed value reaches the set initial tension of the line.

[0008] Furthermore, the weight adjustment module consists of standard weights that can be added precisely, and the pressure sensor is installed at the connection between the load-bearing frame and the manned platform.

[0009] Furthermore, the load-bearing frame is constructed of a high-strength alloy steel frame and adopts a symmetrical design. The top of the load-bearing frame is designed with quick-release clamps or high-strength bolt holes that match the cable carrier platform. The bottom of the load-bearing frame is designed with multi-layered or widened horizontal trays for placing standard weights.

[0010] Furthermore, the data analysis module analyzes the rated load bearing data and sliding operation data to verify the rated load. The tilt angle of the cable tray is monitored by the attitude sensor. If the tilt angle is ≤3°, the rated load bearing verification is qualified. To verify the smoothness of sliding, the running time, stroke, and drive wheel speed data are collected by position and speed sensors to calculate the uniformity of running speed; the tilt angle of the cable guide is monitored by attitude sensor; if the running speed uniformity deviation is ≤5%, there is no continuous slippage of the drive wheel for more than 3 seconds, and the attitude tilt angle is ≤3°, then the smoothness of sliding verification is qualified.

[0011] A method for verifying a portable cable routing device for six-split conductors in power transmission lines, comprising the following steps: S1: Verification preparation: Install the six-split portable cable routing device to be verified on the two simulated cables of the simulated cable support unit, and fix the load bearing frame of the load application unit on the manned platform of the cable routing device. S2: Rated load bearing verification. The rated load is applied to the manned platform through the weight adjustment module, and the load is kept stable for a period of time. The load value is monitored in real time through the pressure sensor and the tilt angle of the cable tray is monitored through the attitude sensor. S3: Overload capacity test. Based on the rated load, gradually increase the load to 1.2 times the rated load in increments of 10%. Record the structural deformation of the cable tray and whether any failure phenomena occur at each load level. S4: Smoothness of sliding test. Adjust the load to the rated load and start the cable guide. Control it to run along the simulated conductor at the rated speed. Collect running time, stroke and drive wheel speed data through position sensor and speed sensor, and calculate the running speed uniformity deviation. Monitor the tilt angle of the cable guide through attitude sensor. S5: Verification Result Evaluation. The data analysis module determines whether the verification is successful based on the following criteria: Rated load bearing verification: The structure is free from deformation, loosening, and damage, and the tilt angle is ≤3°; Overload capacity test: No structural failure under 1.2 times rated load; Smoothness of sliding test: uniformity of running speed ≤5%, no continuous slippage of the drive wheel for more than 3 seconds, and tilt angle ≤3°; S6: Output verification report. The result output module generates a report containing verification items, test data, and pass / fail criteria.

[0012] Furthermore, the uniformity of operating speed is calculated based on the running time, stroke, and drive wheel speed data, specifically including the following steps: Calculate the actual average speed V_avg: Based on the running distance S and total running time T collected by the position sensor, the formula is as follows: V_avg=S / T; Calculate the instantaneous speed V_i: Based on the real-time rotational speed n_i collected by the drive wheel speed sensor and the rated radius R of the drive wheel, the formula is as follows: V_i=2πRn_i; Calculate the velocity uniformity deviation ΔV: measure the degree of deviation between instantaneous velocity and average velocity, and the formula is as follows: ΔV=max(Vi)−min(Vi) / V_avg×100%.

[0013] The beneficial effects of the present invention are as follows: Compared with the prior art, the present invention has the following advantages: This invention addresses the distribution characteristics of 750kV six-split conductors and the working principle of cable routing devices by designing a dedicated verification device and method. It simulates real-world operating conditions, resulting in more accurate and valuable verification results.

[0014] This invention enables comprehensive verification of rated load and sliding smoothness. It can not only detect the structural stability of the cable tray under rated load, but also evaluate its safety redundancy through overload testing. At the same time, it can comprehensively evaluate the sliding smoothness by detecting parameters such as speed uniformity.

[0015] The calibration device of this invention has a scientific and reasonable structure, high detection accuracy, and convenient operation. It can be applied to the calibration of portable cable routing devices with six-split wires of different specifications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a portable cable routing device for six-split conductors of power transmission lines according to the present invention; Figure 2 This is a flowchart of a portable cable routing device verification method for six-split conductors of power transmission lines, as described in this invention. Detailed Implementation

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of this application.

[0018] like Figure 1 As shown, the portable cable routing device for six-split conductors of transmission lines according to the present invention includes a simulated conductor support unit, a load application unit, a motion detection unit, and a data processing unit.

[0019] The simulated conductor support unit includes two parallel simulated conductors with surface characteristics consistent with the actual six-split conductor. It is used to simulate the distribution of the upper two conductors in a 750kV six-split conductor, and the simulated conductors are equipped with tension adjustment mechanisms at both ends.

[0020] Steel-cored aluminum stranded wire with the same diameter as the actual conductor is used as the simulated conductor. The spacing is set to match the actual spacing between the two conductors above the six-split conductor, and the length of the simulated conductor is adjustable. The tension adjustment mechanism can maintain the conductor tension consistent with the actual line operating conditions, ensuring the authenticity of the calibration environment.

[0021] The tension adjustment mechanism is installed at the end of the simulated conductor support unit and mainly consists of the following parts: a set of horizontally arranged channel steel guide rails, a sliding slider, a trapezoidal lead screw, a stepper motor, and a tension sensor.

[0022] The main body of the mechanism includes a set of horizontally arranged channel steel guide rails with a sliding slider embedded inside. The end of the wire is fixed to the sliding slider, which runs within the channel steel rails to ensure that the direction of tension application is always parallel to the wire axis. One end of the simulated wire is fixed to one end of the support, and the other end is connected to the slider of the tension adjustment mechanism via a wedge clamp.

[0023] The high-strength alloy steel trapezoidal lead screw is driven by a stepper motor. The lead screw moves the slider backward, simulating the gradual tension of the lead wire, thus achieving fine adjustment of the lead wire's axial position. The stepper motor is connected to the trapezoidal lead screw via a coupling. Utilizing the self-locking property of the lead screw thread, the tension is automatically locked after the motor stops, eliminating the need for an additional mechanical braking device.

[0024] A tension sensor is connected in series at the connection between the slider and the lead screw to provide real-time feedback on the current tension value. The data processing unit reads the data from the tension sensor, and the stepper motor stops adjusting when the displayed value reaches the set initial tension of the line.

[0025] The load application unit includes a load-bearing frame detachably connected to the cable tray manned platform, as well as a weight adjustment module and a pressure sensor mounted on the load-bearing frame. The weight adjustment module consists of standard weights that can be added precisely, and the pressure sensor is used to detect the actual load value applied to the cable tray in real time.

[0026] The standard weight set has a weight gradient of 0.5 kg, enabling precise load application within the range of 0-150 kg, meeting the requirements for rated load testing and 1.2 times overload testing. A pressure sensor is installed at the connection between the load-bearing frame and the manned platform to detect the actual applied load value in real time, with a detection accuracy of ±0.1 kg, ensuring the accuracy of the load data.

[0027] The load-bearing frame is primarily constructed of high-strength alloy steel and features a symmetrical design to prevent eccentric torque during loading. A quick-release clamp or high-strength bolt holes, matching the cable tray's platform, are located at the top of the frame to ensure secure suspension beneath the cable tray. The bottom of the frame is designed with multi-layered or widened horizontal trays for holding standard weights. Anti-slip baffles are provided along the tray edges to prevent weight displacement due to vibration during sliding calibration.

[0028] The motion detection unit includes position sensors installed at both ends of the simulated wire support unit, a speed sensor installed on the drive wheel shaft of the cable tray, and an attitude sensor for acquiring the operating posture of the cable tray. The position sensors are used to record the running stroke of the cable tray, the speed sensor is used to detect the rotation speed and uniformity of the drive wheel, and the attitude sensor is used to monitor the tilt angle of the cable tray during operation.

[0029] The data processing unit is connected to the load application unit and the motion detection unit, and includes a data acquisition module, a data analysis module and a result output module. The data acquisition module is used to receive the detection data from each sensor, the data analysis module is used to analyze and process the rated load data and sliding operation data, and the result output module is used to output a verification report.

[0030] The data acquisition module receives and preprocesses the detection data from each sensor; the data analysis module analyzes the rated load data and sliding operation data, and calculates key parameters such as structural deformation and velocity uniformity; the result output module generates a detailed verification report.

[0031] Verify the rated load by monitoring the load value in real time using a pressure sensor and the tilt angle of the cable tray using an attitude sensor. If the tilt angle is ≤3°, the rated load bearing capacity verification is qualified.

[0032] To verify the smoothness of sliding, the running time, stroke, and drive wheel speed data are collected by position and speed sensors to calculate the uniformity of running speed; the tilt angle of the cable guide is monitored by attitude sensor; if the running speed uniformity deviation is ≤5%, there is no continuous slippage of the drive wheel for more than 3 seconds, and the attitude tilt angle is ≤3°, then the smoothness of sliding verification is qualified.

[0033] like Figure 2 As shown, the present invention provides a method for verifying a portable cable routing device for six-split conductors in power transmission lines, comprising the following steps: S1: Verification preparation: Install the portable six-split wire routing device to be verified on the two simulated wires of the simulated wire support unit, ensuring that the power wheel of the routing device is in contact with the top of the simulated wire, the support wheel is in contact with the bottom of the simulated wire, and the U-shaped wire groove is completely in contact with the simulated wire; fix the load-bearing frame of the load application unit on the manned platform of the routing device; S2: Rated load test. The rated load is applied to the manned platform through the weight adjustment module. The rated load is the design load weight of the cable tray. The load is kept stable for a period of time, such as 30 minutes. The load value is monitored in real time by the pressure sensor, the tilt angle of the cable tray is monitored by the attitude sensor, and the bracket, drive wheel, support wheel and connection parts are observed for deformation, loosening or damage through visual inspection. S3: Overload capacity test. Based on the rated load, the load is gradually increased in increments of 10% to 1.2 times the rated load. Each load level is maintained for 30 minutes. The structural deformation of the cable tray and whether any failure phenomena occur are recorded under each load level. The overload capacity of the cable tray is evaluated. S4: Smoothness of sliding test. Adjust the load to the rated load, start the cable tray through the motor controller of the cable tray, and control it to run along the simulated wire at the rated speed. The running stroke is not less than 5m. Collect running time, stroke and drive wheel speed data through position sensor and speed sensor, and calculate the running speed uniformity deviation; monitor the tilt angle of the cable tray through attitude sensor. The calculation of running speed uniformity based on running time, stroke, and drive wheel speed data includes the following steps: Calculate the actual average speed (V_avg, in m / s): based on the running distance (S, in m) and total running time (T, in s) collected by the position sensor, the formula is as follows: V_avg=S / T; Calculate the instantaneous speed (V_i, in m / s): based on the real-time rotational speed (n_i, in r / s) collected by the drive wheel speed sensor and the rated radius of the drive wheel (R, in m, known equipment parameters), the formula is as follows: V_i=2πRn_i; Calculate the velocity uniformity deviation (ΔV): This measures the degree of deviation between instantaneous velocity and average velocity (a core evaluation indicator, which must be ≤5%). The formula is as follows: ΔV = max(Vi)−min(Vi) / V_avg×100%.

[0034] S5: Verification Result Evaluation. The data analysis module determines whether the verification is successful based on the following criteria: Rated load bearing verification: Within 30 minutes, the structure shows no deformation, loosening, or damage, and the tilt angle is ≤3°; Overload capacity test: No structural failure after maintaining 1.2 times the rated load for 30 minutes; Smoothness of sliding test: uniformity of running speed ≤5%, no continuous slippage of the drive wheel for more than 3 seconds, and tilt angle ≤3°; S6: Output verification report. The result output module generates a verification report containing verification items, test data, pass / fail judgment and improvement suggestions, which clarifies the performance status of the cable tray and provides a basis for product quality assessment and optimization.

[0035] The applicant of this invention has provided a detailed description of the embodiments of the invention in conjunction with the accompanying drawings. However, those skilled in the art should understand that the above embodiments are merely preferred embodiments of the invention. The detailed description is only intended to help readers better understand the spirit of the invention and is not intended to limit the scope of protection of the invention. On the contrary, any improvements or modifications made based on the inventive spirit of the invention should fall within the scope of protection of the invention.

Claims

1. A portable cable routing and calibration device for six-split conductors of power transmission lines, characterized in that, The simulation wire support unit, the load applying unit, the motion detecting unit, and the data processing unit are included. The simulation wire support unit includes two parallel simulation wires, and the two ends of the simulation wires are provided with tension adjusting mechanisms. The load applying unit includes a load bearing frame detachably connected to the man-carrying platform of the wire tracker, and a weight adjusting module and a pressure sensor arranged on the load bearing frame. The motion detecting unit includes position sensors installed at the two ends of the simulation wire support unit, a rotating speed sensor installed on the power wheel shaft of the wire tracker, and a posture sensor for collecting the running posture of the wire tracker. The data processing unit is connected with the load applying unit and the motion detecting unit, and includes a data collecting module, a data analyzing module, and a result output module.

2. The portable stringing checker for a six-bundle conductor of a power transmission line according to claim 1, characterized by, The simulation wire is made of steel core aluminum stranded wire with the same diameter as the actual wire, and the interval is matched with the actual interval of the two upper wires of the six-split wire.

3. The portable walk-along checker for a six-bundle conductor of a power transmission line according to claim 1, characterized in that, The tension adjusting mechanism includes a set of horizontally arranged channel steel guide rails, a sliding block, a trapezoidal screw, a stepping motor, and a tension sensor. The mechanism body includes a set of horizontally arranged channel steel guide rails, a sliding block embedded inside, and a wire end fixed on the sliding block. The stepping motor is connected to the trapezoidal screw through a coupling, and the screw stroke is driven by the stepping motor. The tension sensor is connected in series at the connection between the sliding block and the screw, and real-time feedback of the current tension value is realized.

4. The portable walk-along checker for a six-bundle conductor of a power transmission line according to claim 1, characterized by The weight adjusting module is a standard weight that can be accurately added, and the pressure sensor is installed at the connection between the load bearing frame and the man-carrying platform.

5. The portable walk-along checker for a six-bundle conductor of a power transmission line according to claim 1, wherein The load bearing frame is made of high-strength alloy steel frame and adopts symmetrical design.

6. The portable walk-along checker for a six-bundle conductor of a power transmission line according to claim 1, wherein The data analyzing module analyzes the rated load bearing data and the sliding running data, and checks the rated load. The inclination angle of the wire tracker is monitored by the posture sensor, and the rated load bearing is qualified when the inclination angle is less than or equal to 3 degrees. The sliding smoothness is checked, the running time, the stroke and the power wheel rotation speed data are collected through the position sensor and the rotation speed sensor, the running speed uniformity is calculated, the inclination angle of the walking device is monitored through the attitude sensor, the sliding smoothness checking is qualified when the running speed uniformity deviation is less than or equal to 5%, the power wheel does not slip for more than 3s continuously, and the inclination angle is less than or equal to 3°.

7. A method for checking the portable walk-along device for six-bundle conductor of power transmission line according to any one of claims 1 to 6, characterized in that, The method comprises the steps of: S1: checking preparation, installing the six-split conductor portable walking device to be checked on two simulated conductors of the simulated conductor support unit, fixing the load bearing frame of the load applying unit on the manned platform of the walking device; S2: rated load bearing checking, applying the rated load to the manned platform through the weight adjusting module, keeping the load stable for a period of time, monitoring the load value in real time through the pressure sensor, and monitoring the inclination angle of the walking device through the attitude sensor; S3: overload bearing checking, gradually increasing the load by 10% gradient to 1.2 times of the rated load based on the rated load, recording the structural deformation of the walking device at each load level and whether failure phenomenon occurs; S4: sliding smoothness checking, starting the walking device by adjusting the load to the rated load, controlling the walking device to run at the rated speed along the simulated conductor, collecting the running time, the stroke and the power wheel rotation speed data through the position sensor and the rotation speed sensor, calculating the running speed uniformity deviation, and monitoring the inclination angle of the walking device through the attitude sensor; S5: checking result evaluation, the data analysis module judges whether the checking is qualified according to the following standards: rated load bearing checking: no deformation, no loosening, no damage, and inclination angle less than or equal to 3°; overload bearing checking: no structural failure under 1.2 times of the rated load; sliding smoothness checking: running speed uniformity deviation less than or equal to 5%, no power wheel slip for more than 3s continuously, and inclination angle less than or equal to 3°; S6: outputting the checking report, the result output module generates the checking items, the detection data and the qualification determination.

8. The method of claim 7, wherein, The running speed uniformity is calculated according to the running time, the stroke and the power wheel rotation speed data, and the specific steps are as follows: calculating the actual average speed V_avg: based on the running stroke S collected by the position sensor and the total running time T, the formula is as follows: V_avg=S / T; calculating the instantaneous speed V_i: based on the real-time rotation speed n_i collected by the power wheel rotation speed sensor and the rated radius R of the power wheel, the formula is as follows: V_i=2πRn_i; calculating the speed uniformity deviation ΔV: measuring the deviation degree of the instantaneous speed and the average speed, the formula is as follows: ΔV= max(Vi)−min(Vi) / V_avg×100%.

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