A double-bundle conductor wire lifting device and a lifting method

Abstract

The application belongs to the field of power transmission line construction and maintenance equipment, and discloses a double-split conductor wire lifting device with a frame body with an integrated structure, a hanging lug plate below the top of the frame body, first to fourth conductor wire bearing channels on the frame body, the conductor wire bearing channels being upwardly open grooves, the conductor wire bearing channels being parallel and not connected, first and second limiting components being respectively located at the leftmost and rightmost sides of the frame body, the top of the limiting component being higher than the top of the conductor wire bearing channel with an edge, the middle part of the frame body being higher than the top of the first conductor wire bearing channel and the third conductor wire bearing channel, the frame body being left-right symmetrical, and the frame body being front-back symmetrical. The application also discloses a wire lifting method. The application has the following main beneficial technical effects: the operation efficiency is greatly improved, the operation safety is significantly improved, the operation precision and universality are optimized, and the operation convenience and economy are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of power transmission line construction and maintenance equipment, specifically relating to a double-split conductor lifting device and lifting method. Background Technology

[0002] In existing technologies, the main techniques for lifting double-split conductors are as follows: I. Single-Wire Lifting Technology with Chain Hoist: This technology is a traditional double-split conductor lifting solution long used in the power industry and is a common construction method in the industry. The technical measures are as follows: A conventional chain hoist is used as the lifting power source. During operation, the suspension end of the chain hoist is first fixed to the working point on the pole, and the hook end is tied to one of the double-split conductors. The chain is manually pulled to drive the internal gear transmission of the hoist, thus lifting a single conductor. After the conductor is lifted to the preset height, a temporary fixing device is used to lock the conductor's position. Then, the chain hoist is disassembled, reinstalled, and fixed to the other conductor. The above lifting and fixing process is repeated until both conductors reach the required working height. The operation steps are sequentially connected, and the complete process of "single-conductor fixing - single-conductor lifting - single-conductor locking - equipment transfer - secondary fixing - secondary lifting - secondary locking" must be completed before subsequent maintenance work can be carried out.

[0003] This thread-lifting technique has the following drawbacks: 1. Extremely low work efficiency: Because both conductors need to be lifted one by one, there are repetitive procedures of equipment disassembly, relocation, and reinstallation, making each operation time-consuming. Taking the replacement of porcelain insulators for double-split conductors as an example, the traditional method takes an average of 60 minutes per operation, with equipment relocation and repetitive fixing accounting for more than 30%, which seriously affects the overall construction progress.

[0004] 2. Significant safety hazards: During the two lifting processes, the pulling force and lifting speed of manual operation are difficult to be completely consistent, which can easily lead to a significant height difference between the two conductors, causing uneven stress on the conductors, generating additional bending stress and torque, and increasing the risk of conductor deformation and breakage. At the same time, the unexpected swaying caused by the height difference of the conductors can pose a direct threat to the personal safety of workers at height, resulting in a low safety guarantee factor for the operation.

[0005] 3. Insufficient operational precision: The existence of conductor height difference will directly affect the alignment accuracy of subsequent porcelain insulator replacement, resulting in unbalanced force on the installed porcelain insulator, thereby reducing the long-term operational stability of the transmission line and increasing the later maintenance cost.

[0006] II. Pulley Block Lifting Technology: This technology is a common and traditional solution for lifting double-split conductors, a well-known industry practice widely used in various transmission line construction and maintenance scenarios. Its main components include the pulley block body, comprising two parallel fixed pulleys, two steel wire ropes of equal length, a tower fixing bracket, and a manual locking device. The technical measures are as follows: The pulley block body is installed at the pre-set working position on the tower using the fixing bracket, ensuring that the center line connecting the two fixed pulleys is aligned with the parallel direction of the double-split conductors; the two steel wire ropes are passed through the two fixed pulleys respectively, with one end of each rope tied to the corresponding split conductor, and the other end joined and connected to the manual traction device or pulled synchronously by the operator; simultaneous traction of the steel wire ropes lifts both conductors simultaneously. When the conductors reach the target height, the locking device locks the position of the steel wire ropes to prevent the conductors from falling back. The coordination of the components is as follows: the fixing bracket provides stable support, the pulley block changes the direction of force transmission, the steel wire ropes bear the tension of lifting the conductors, and the locking device ensures the positional stability of the conductors after lifting.

[0007] The main drawback of this thread-lifting technique is: 1. The wire rope is prone to deviating from the preset plane: Due to the influence of the processing accuracy of the wire rope, installation error and tensile deformation during operation, the actual effective length of the two wire ropes is prone to deviation. Even if the initial design is equal in length, it is difficult to ensure that the length is completely consistent during the lifting process, which causes the two wire ropes to rise at different times and deviate from the same horizontal plane, which seriously affects the accuracy of subsequent operations and construction quality.

[0008] 2. High safety risks: When the conductor deviates from the same plane, it will generate lateral tension, which will not only increase the load on the pulley block and fixed support, exceeding the design load capacity of the equipment, but may also cause the conductor to collide and rub against the surrounding equipment, damaging the conductor insulation layer or equipment components; at the same time, the unbalanced conductor has poor stability during operation and is prone to accidental displacement, causing equipment damage or personal injury accidents.

[0009] 3. Poor versatility: For double-split conductors of different diameters and specifications, it is necessary to change the appropriate wire rope binding method or pulley model, which increases equipment reserve costs and operation preparation time, making it difficult to adapt to diverse operation needs.

[0010] 4. Severe tool wear: During long-term use, steel wire ropes are prone to problems such as broken wires and wear due to repeated stretching and friction, requiring frequent replacement and increasing the cost of operating consumables; in addition, the mechanical wear rate of pulley blocks is high, and the maintenance frequency and maintenance cost are both at a high level.

[0011] CN119651411A discloses a visualized insulating rod and operation method for replacing 110-500kV insulator strings. It monitors the tension data between the horizontal double-split conductor hook and the rainproof insulating rod in real time, preprocesses the tension data, and performs overload warning analysis on the insulating rod. The real-time tension value and overload warning analysis results are sent to MR glasses, which display the real-time tension value and the insulating rod's warning status. This allows for real-time monitoring of the stress on live-line working tools, enabling workers to understand the stress state of the tools and preventing equipment damage and personnel injury. The rainproof insulating rod uses composite materials and silicone rubber skirts to improve insulation performance in humid environments. By displaying the real-time tension value and the insulating rod's warning status in the MR glasses, workers can easily view the data without manually operating the equipment, improving operational safety. However, its complexity hinders construction progress. Summary of the Invention

[0012] To address the aforementioned problems, the present invention aims to disclose a double-split conductor lifting device and lifting method. Its core application is to lift two parallel split conductors during operations such as replacing porcelain insulators and line maintenance, thereby removing the conductors from their original installation positions and providing a safe and stable operating space for subsequent operations. This improves work efficiency, safety, and construction quality. These are achieved through the following technical solutions.

[0013] A double-split wire lifting device has an integral frame body, characterized in that: protruding suspension ears are located on both the front and rear sides directly below the top of the frame body; a first wire carrying channel and a second wire carrying channel are sequentially distributed from the center of the frame body to the left, both of which are upward-opening grooves; the first and second wire carrying channels are parallel and not connected; a first limiting component is located on the far left of the frame body, and the top of the first limiting component is higher than the top of the second wire carrying channel; a third and a fourth wire carrying channel are sequentially distributed from the center of the frame body to the right, both of which are upward-opening grooves; the third and fourth wire carrying channels are parallel and not connected; a second limiting component is located on the far right of the frame body, and the top of the second limiting component is higher than the top of the fourth wire carrying channel; the middle part of the frame body is higher than the tops of the first and third wire carrying channels; the frame body is symmetrical from left to right and from front to back.

[0014] The aforementioned double-split wire lifting device is characterized in that: the frame body and the suspension ear plate are both made of titanium alloy.

[0015] The above-described double-split wire lifting device is characterized in that: the thickness of the suspension ear plate is 10-15mm and the aperture is 20-30mm.

[0016] The aforementioned double-split conductor lifting device is characterized in that the center line of the suspension ear plate is parallel to the center line of the first conductor carrying channel.

[0017] The aforementioned double-split conductor lifting device is characterized in that the distance between the first conductor carrying channel and the second conductor carrying channel is set to 500-800mm.

[0018] The aforementioned double-split conductor lifting device is characterized in that the distance between the third conductor carrying channel and the fourth conductor carrying channel is set to 500-800mm.

[0019] The aforementioned double-split conductor lifting device is characterized in that: the inner walls of the first conductor carrying channel, the second conductor carrying channel, the third conductor carrying channel, and the fourth conductor carrying channel are all arc-shaped with an arc radius of 8-15mm.

[0020] The above-described double-split wire lifting device is characterized in that: the inner walls of the first wire carrying channel, the second wire carrying channel, the third wire carrying channel, and the fourth wire carrying channel are covered with anti-slip rubber pads with a thickness of 3-5mm.

[0021] The above-mentioned double-split wire lifting device is characterized in that: the sliding rubber pad has a Shore hardness of 60-70HA, the surface is provided with diamond-shaped anti-slip texture, and the coefficient of friction is ≥0.8.

[0022] The aforementioned double-split wire lifting device is characterized in that: at the bottom of the frame body corresponding to the position of the wire channel, movable limiting blocks are respectively set. The limiting blocks are made of high-strength engineering plastic material and are connected to the frame body through a rotating shaft, enabling 0-90° rotation. When the wire is embedded in the channel, the limiting blocks are rotated to a vertical state to limit the bottom of the wire and prevent the wire from falling out from below the channel.

[0023] A method for lifting a double-split conductor, using the aforementioned double-split conductor lifting device, is characterized by comprising the following operational steps: Step 1: Equipment installation and positioning: On the high-altitude work platform, the operator uses high-strength bolts to fix the line lifting device to the preset working position on the tower through the suspension ear plate at the top of the frame body. The bolt tightening torque is ≥30N・m to ensure that the installation is firm and there is no loosening or shaking. After installation, check whether the frame is level. Adjust the position of the bolts to keep the frame level and ensure that the two conductors are evenly stressed. Step 2: Wire embedding and limiting: Insert the two wires of the double-split wire into the two bearing channels of the frame body respectively, ensuring that the wires are completely in contact with the anti-slip rubber pads on the inner wall of the channel; then rotate the limiting block at the bottom of the frame to make it perpendicular to the wire axis, thereby limiting and locking the bottom of the wire to prevent the wire from falling off during operation; Step 3: Connect the external lifting device: Connect the hook of the external lifting power device to the lifting force points on both sides of the frame body, ensuring that the hook and force points are firmly connected and there is no risk of slippage; the lifting device should be selected to match the operation requirements, with a rated load ≥30kN, to meet the safety requirements of the lifting operation. Step 4: Synchronous lifting operation: 1-2 operators operate the lifting device to lift the frame body and the guide wire at a uniform speed of 5-10 mm / s. During the lifting process, observe the status of the two guide wires to ensure that they rise synchronously without significant height difference. If a slight deviation occurs, adjust the tension of the lifting device to keep the two guide wires horizontal. Step 5: Fixing the working position: After the conductor is raised to the preset working height, the lifting position is fixed by the self-locking function of the lifting device or an additional locking device to prevent the conductor from falling back; then the operators can carry out subsequent work such as insulator replacement and line maintenance. Step 6: Lowering the conductor and disassembling the equipment: After the subsequent work is completed, release the locking state of the lifting device, lower the frame body and conductor at a uniform speed, and place the conductor back to its original installation position; rotate the limit block to a horizontal state to release the limit on the conductor, and take the conductor out of the bearing channel; finally, remove the fixing bolts and remove the lifting device from the tower working platform to complete a single operation.

[0024] This invention addresses the shortcomings of existing chain hoist single-wire lifting technology, which suffers from cumbersome processes, low efficiency, and poor safety, as well as the drawbacks of pulley system lifting technology, such as wire misalignment, insufficient precision, poor versatility, and severe tool wear. It improves the lifting device to achieve the following objectives: 1. It achieves synchronous and stable lifting of two split conductors, completely eliminating repetitive operation procedures, significantly shortening the working time of a single operation, and improving operation efficiency.

[0025] 2. It precisely controls the lifting force and progress of the two guide wires, avoiding height differences or deviations from the same plane, significantly reducing operational safety hazards and improving the safety factor of high-altitude operations.

[0026] 3. It enhances the versatility of the equipment, making it compatible with double-split conductors of different diameters (15-30mm), reducing the frequency of equipment replacement and tool wear.

[0027] 4. It simplifies the operation process, reduces the physical exertion of operators, improves the accuracy of operations, ensures the long-term operational stability of transmission lines, and achieves a balance between operational efficiency, safety, and economy.

[0028] This application has the following main beneficial technical effects: significantly improved work efficiency, significantly improved work safety, optimized work accuracy and versatility, and significantly improved ease of operation and economy. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the main view structure for implementing Example 1.

[0030] Figure 2 A photo for implementing Example 1.

[0031] Figure 3 The following is a screenshot showing the effect of using Example 1. Detailed Implementation

[0032] To enable those skilled in the art to better understand and implement this patent, the markings in the accompanying drawings are explained in detail below.

[0033] In the figure: 1—frame body, 11—suspension ear plate, 12—first conductor carrying channel, 13—second conductor carrying channel, 14—first limiting component, 15—third conductor carrying channel, 16—fourth conductor carrying channel, 17—second limiting component.

[0034] Implementation Example 1: Please see Figures 1 to 3 A double-split wire lifting device, comprising a frame body 1 with an integral structure, characterized in that: protruding suspension ear plates 11 are provided on both the front and rear sides directly below the top of the frame body 1; a first wire carrying channel 12 and a second wire carrying channel 13 are sequentially distributed from the center of the frame body 1 to the left; both the first wire carrying channel 12 and the second wire carrying channel 13 are upward-opening grooves; the first wire carrying channel 12 and the second wire carrying channel 13 are parallel and not connected; a first limiting member 14 is located on the far left of the frame body 1, and the top of the first limiting member 14 is higher than the top of the second wire carrying channel 13. The frame body 1 has a third conductor carrying channel 15 and a fourth conductor carrying channel 16 distributed sequentially from the center to the right. Both the third conductor carrying channel 15 and the fourth conductor carrying channel 16 are grooves with openings facing upwards. The third conductor carrying channel 15 and the fourth conductor carrying channel 16 are parallel and not connected. The second limiting component 17 is located on the far right of the frame body 1, and the top of the second limiting component 17 is higher than the top of the fourth conductor carrying channel 16. The middle part of the frame body 1 is higher than the top of the first conductor carrying channel 12 and the third conductor carrying channel 15. The frame body 1 is symmetrical from left to right and symmetrical from front to back.

[0035] The aforementioned double-split wire lifting device is characterized in that: the frame body 1 and the suspension ear plate 11 are both made of titanium alloy.

[0036] The above-described double-split wire lifting device is characterized in that: the thickness of the suspension ear plate 11 is 10-15mm, and the aperture is 20-30mm.

[0037] The above-described double-split conductor lifting device is characterized in that: the center line of the suspension ear plate 11 is parallel to the center line of the first conductor carrying channel 12.

[0038] The above-described double-split conductor lifting device is characterized in that the distance between the first conductor carrying channel 12 and the second conductor carrying channel 13 is set to 500-800mm.

[0039] The aforementioned double-split conductor lifting device is characterized in that the distance between the third conductor carrying channel 15 and the fourth conductor carrying channel 16 is set to 500-800mm.

[0040] The aforementioned double-split conductor lifting device is characterized in that: the inner sidewalls of the first conductor carrying channel 12, the second conductor carrying channel 13, the third conductor carrying channel 15, and the fourth conductor carrying channel 16 are all arc-shaped with an arc radius of 8-15mm.

[0041] The aforementioned double-split wire lifting device is characterized in that: the inner walls of the first wire carrying channel 12, the second wire carrying channel 13, the third wire carrying channel 15, and the fourth wire carrying channel 16 are covered with anti-slip rubber pads with a thickness of 3-5mm.

[0042] The above-mentioned double-split wire lifting device is characterized in that: the sliding rubber pad has a Shore hardness of 60-70HA, the surface is provided with diamond-shaped anti-slip texture, and the coefficient of friction is ≥0.8.

[0043] The above-described double-split wire lifting device is characterized in that: at the bottom of the frame body 1, corresponding to the position of the wire channel, movable limiting blocks are respectively set. The limiting blocks are made of high-strength engineering plastic material and are connected to the frame body 1 through a rotating shaft, which can achieve 0-90° rotation. When the wire is embedded in the channel, the limiting blocks are rotated to a vertical state to limit the bottom of the wire and prevent the wire from falling off from below the channel.

[0044] A method for lifting a double-split conductor, using the aforementioned double-split conductor lifting device, is characterized by comprising the following operational steps: Step 1: Equipment installation and positioning: On the high-altitude work platform, the operator uses high-strength bolts to fix the line lifting device to the preset working position on the tower through the suspension ear plate at the top of the frame body 1. The bolt tightening torque is ≥30N・m to ensure that the installation is firm and there is no loosening or shaking. After installation, check whether the frame is level. Adjust the bolt position to keep the frame level and ensure that the two conductors are evenly stressed. Step 2: Wire embedding and limiting: Insert the two wires of the double-split wire into the two bearing channels of the frame body respectively, ensuring that the wires are completely in contact with the anti-slip rubber pads on the inner wall of the channel; then rotate the limiting block at the bottom of the frame to make it perpendicular to the wire axis, thereby limiting and locking the bottom of the wire to prevent the wire from falling off during operation; Step 3: Connect the external lifting device: Connect the hook of the external lifting power device to the lifting force points on both sides of the frame body, ensuring that the hook and force points are firmly connected and there is no risk of slippage; the lifting device should be selected to match the operation requirements, with a rated load ≥30kN, to meet the safety requirements of the lifting operation. Step 4: Synchronous lifting operation: 1-2 operators operate the lifting device to lift the frame body and the guide wire at a uniform speed of 5-10 mm / s. During the lifting process, observe the status of the two guide wires to ensure that they rise synchronously without significant height difference. If a slight deviation occurs, adjust the tension of the lifting device to keep the two guide wires horizontal. Step 5: Fixing the working position: After the conductor is raised to the preset working height, the lifting position is fixed by the self-locking function of the lifting device or an additional locking device to prevent the conductor from falling back; then the operators can carry out subsequent work such as insulator replacement and line maintenance. Step 6: Lowering the conductor and disassembling the equipment: After the subsequent work is completed, release the locking state of the lifting device, lower the frame body and conductor at a uniform speed, and place the conductor back to its original installation position; rotate the limit block to a horizontal state to release the limit on the conductor, and take the conductor out of the bearing channel; finally, remove the fixing bolts and remove the lifting device from the tower working platform to complete a single operation.

[0045] In this application, the core of the double-split conductor lifting device adopts a single core structure design of "integrated lightweight frame". Through the structural optimization and functional integration of the frame itself, it achieves synchronous lifting, stable load bearing and precise positioning of the double-split conductors. Its core technical parameters are as follows: load-bearing capacity 10-30kN, compatible conductor diameter 15-30mm, lifting stroke 0-500mm, lifting height difference between the two conductors ≤2mm, and equipment weight ≤15kg, meeting the portability, stability and practicality requirements of high-altitude operations.

[0046] This application has the following characteristics: 1. Integrated Lightweight Frame: The frame is integrally formed from titanium alloy, a material that combines high strength (tensile strength ≥900MPa) with low density (density 4.5g / cm³), ensuring structural load-bearing capacity while minimizing equipment weight. The frame has a symmetrical structure, with a length of 300-500mm, width of 150-250mm, and height of 200-300mm. The frame is formed using a one-piece forging process, eliminating seams and preventing stress concentration, thus improving structural stability and durability.

[0047] 2. Top Suspension Structure: Two symmetrically distributed suspension lugs are installed at the top of the frame. The lugs are 10-15mm thick with holes of 20-30mm in diameter. The lugs are integrally formed with the main frame body. The center line of the suspension lugs is parallel to the center line of the conductor channel in the middle of the frame to ensure balanced force during lifting. The suspension lugs are used to fix the tower working platform to the tower using high-strength bolts. The bolts are made of 8.8 grade high-strength carbon steel with a connection strength ≥50kN, meeting the load-bearing requirements of lifting operations.

[0048] 3. Central Conductor Support Channel: Two parallel conductor support channels are reserved in the middle of the frame, with a channel spacing of 500-800mm, compatible with the domestic standard spacing for double-split conductors (500mm, 600mm, 800mm), ensuring that both split conductors can be embedded in the channel simultaneously. The inner wall of the channel adopts an arc design with a radius of 8-15mm, conforming to the outer arc of the conductor, increasing the contact area between the conductor and the channel, reducing local pressure, and avoiding damage to the conductor insulation layer; a 3-5mm thick anti-slip rubber pad is pasted on the inner wall of the channel, with a Shore hardness of 60-70HA and a diamond-shaped anti-slip texture on the surface, and a friction coefficient ≥0.8, effectively enhancing the friction between the conductor and the channel and preventing conductor slippage during lifting.

[0049] 4. Bottom Limiting and Positioning Structure: Movable limiting blocks are installed at the bottom of the frame corresponding to the two wire channels. These blocks are made of high-strength engineering plastic and are connected to the frame body via a pivot, allowing for 0-90° rotation. When a wire is inserted into a channel, rotating the limiting block to a vertical position limits the bottom of the wire, preventing it from falling out from below. The inner side of the limiting block has an arc-shaped groove adapted to the wire, ensuring a tight fit during limiting and improving stability.

[0050] 5. Lifting Force Transmission Structure: Symmetrical lifting force-bearing points are set at the center of both sides of the frame. These points are cylindrical protrusions, 20-30mm in diameter and 10-15mm in height, integrally formed with the frame body, and used to connect to external lifting power devices (such as manual hoists, electric winches, etc.). The center of the lifting force-bearing points is located at the midpoint of the frame's height, ensuring balanced force distribution during lifting and preventing tilting.

[0051] In this application, the integrated symmetrical structure design is adopted: the frame adopts an overall symmetrical structure, and the top suspension ear plate, the middle guide channel, and the lifting force points on both sides are symmetrically distributed to ensure that the two guides are subjected to balanced forces during the lifting process. The structure guarantees the synchronous lifting of the two guides and avoids problems such as height difference or deviation from the plane. The synchronization error is ≤2mm.

[0052] In this application, the titanium alloy one-piece molding process is used: titanium alloy material is formed by one-piece forging process, which not only ensures the high strength and load-bearing capacity of the frame (load-bearing capacity of 10-30kN), but also controls the weight of the equipment to within 15kg. Compared with the traditional pulley system (weight ≥25kg), the weight is reduced by more than 40%, which greatly improves the portability of high-altitude operations and reduces the labor intensity of operators.

[0053] In this application, the adaptable conductor carrying channel has a conductor channel spacing that can cover the standard spacing of mainstream double-split conductors (500-800mm). The arc-shaped design of the inner wall of the channel combined with the anti-slip rubber pad not only achieves adaptation to conductors of different diameters from 15-30mm, but also avoids conductor slippage and insulation damage by increasing the contact area and friction, thereby improving the versatility and safety of the equipment.

[0054] In this application, the easy-to-limit locking structure features a bottom rotatable limit stop block with a simple structure and convenient operation. It can reliably limit the wire without the need for a complex locking mechanism, which simplifies the equipment structure, reduces manufacturing costs, shortens preparation time, and improves work efficiency.

[0055] This application has the following main beneficial technical effects: (I) Significantly Improved Operational Efficiency: Compared to the traditional single-line lifting technology of chain hoists, this invention, through its integrated frame and dual-lead synchronous bearing design, can lift two leads simultaneously, completely eliminating the redundant procedures of equipment disassembly, relocation, and reinstallation. The time for a single operation is reduced from 60 minutes to 38 minutes, saving 22 minutes per operation and increasing operational efficiency by 36.7%. Completing 50 operations cumulatively can reduce working hours by 18.3 hours. Based on the average hourly labor cost of 1200 yuan per worker in the power industry, this translates to a saving of 21960 yuan in labor costs alone, significantly accelerating the construction progress.

[0056] (II) Significantly improved operational safety: 1. Improved force balance: The integrated symmetrical structure ensures that the two conductors are subjected to balanced force during the lifting process, avoiding the difference in conductor height and accidental swaying caused by uneven force in traditional technology. The conductor swaying amplitude is reduced from ±10mm in traditional technology to ±2mm, and the incidence of operational safety hazards is reduced by more than 90%.

[0057] 2. Anti-slip and anti-displacement protection: The anti-slip rubber pad on the inner wall of the cable channel works in conjunction with the bottom limit block to achieve double fixation of the cable, with a cable slippage rate of 0, effectively preventing the cable from falling off or shifting during the lifting process, and avoiding equipment damage or personal injury accidents caused by cable slippage.

[0058] 3. Enhanced structural stability: The one-piece titanium alloy frame has no splicing welds, resulting in high structural strength and good fatigue resistance. Compared with traditional pulley systems (steel wire ropes and pulleys are prone to wear), the tool wear rate is reduced by more than 60%. After 50 operations, tool wear costs can be reduced by about 4,000 yuan, thus reducing the cost of consumable materials.

[0059] (III) Optimization of operational accuracy and versatility: 1. Improved lifting accuracy: The dual-conductor synchronous bearing design ensures that the two conductors remain on the same plane during the lifting process, with a lifting height difference of ≤2mm. This significantly improves accuracy compared to traditional pulley systems (height difference ≤10mm), ensuring the alignment accuracy of subsequent operations such as porcelain insulator replacement. After installation, the porcelain insulator stress imbalance rate is reduced from 25% in traditional technology to below 3%, ensuring the long-term operational stability of the transmission line.

[0060] 2. Enhanced versatility: The conductor channel is compatible with double-split conductors with a diameter of 15-30mm, and the channel spacing covers the standard spacing of 500-800mm. It can meet the operation and maintenance needs of different specifications of lines without replacing equipment. The versatility is improved by 80% compared with traditional technology, reducing equipment reserve costs and operation preparation time.

[0061] (iv) Improved ease of operation and economy: 1. Optimized portability: The equipment weighs ≤15kg, which is easier for high-altitude workers to carry, install and disassemble compared to traditional pulley blocks (weighing ≥25kg). A single person can complete the entire operation without the need for additional auxiliary personnel, thus reducing manpower input.

[0062] 2. Simplified operation: The structure is simple, without complex transmission mechanisms and adjustment components. The operation process only requires 7 steps: "installation-threading-limiting-lifting-operation-lowering-disassembly". The operation threshold is low, and both new and experienced operators can quickly master it, reducing technical training costs.

[0063] 3. Significant overall benefits: A total of 50 operations can generate direct economic benefits of approximately 25,960 yuan (21,960 yuan in labor cost savings + 4,000 yuan in tool wear and tear reduction); at the same time, the improvement in work efficiency and the reduction in safety hazards indirectly reduce losses caused by project delays and safety accidents, resulting in significant overall economic benefits.

[0064] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A double-split wire lifting device, comprising an integral frame body, characterized in that: The frame body has protruding suspension lugs on both the front and rear sides directly below the top. From the center of the frame body to the left, there are a first wire carrying channel and a second wire carrying channel, both of which are upward-opening grooves. The first and second wire carrying channels are parallel and not connected. A first limiting component is located on the far left of the frame body, and its top is higher than the top of the second wire carrying channel. From the center of the frame body to the right, there are a third and a fourth wire carrying channel, both of which are upward-opening grooves. The third and fourth wire carrying channels are parallel and not connected. A second limiting component is located on the far right of the frame body, and its top is higher than the top of the fourth wire carrying channel. The middle part of the frame body is higher than the tops of the first and third wire carrying channels. The frame body is symmetrical from left to right and from front to back.

2. The double-split conductor lifting device according to claim 1, characterized in that: The frame body and the suspension lugs are both made of titanium alloy.

3. A double-split conductor lifting device according to claim 2, characterized in that: The thickness of the suspension ear plate is 10-15mm, and the hole diameter is 20-30mm.

4. A double-split conductor lifting device according to claim 3, characterized in that: The center line of the suspension ear plate is parallel to the center line of the first conductor carrying channel.

5. A double-split conductor lifting device according to claim 4, characterized in that: The spacing between the first conductor carrying channel and the second conductor carrying channel is set to 500-800mm; The spacing between the third conductor carrying channel and the fourth conductor carrying channel is set to 500-800mm.

6. A double-split conductor lifting device according to claim 5, characterized in that: The inner walls of the first conductor carrying channel, the second conductor carrying channel, the third conductor carrying channel, and the fourth conductor carrying channel are all arc-shaped, with an arc radius of 8-15mm.

7. A double-split conductor lifting device according to claim 6, characterized in that: The inner walls of the first conductor carrying channel, the second conductor carrying channel, the third conductor carrying channel, and the fourth conductor carrying channel are covered with anti-slip rubber pads with a thickness of 3-5mm.

8. A double-split conductor lifting device according to claim 7, characterized in that: The sliding rubber pad has a Shore hardness of 60-70HA, a diamond-shaped anti-slip pattern on the surface, and a coefficient of friction ≥0.

8.

9. A double-split conductor lifting device according to claim 8, characterized in that: At the bottom of the frame body, corresponding to the position of the wire channel, there are movable limit blocks. The limit blocks are made of high-strength engineering plastic and are connected to the frame body through a rotating shaft, which can achieve 0-90° rotation. When the wire is inserted into the channel, the limit block is rotated to a vertical position to limit the bottom of the wire and prevent the wire from falling out from under the channel.

10. A method for lifting a double-split conductor, using a double-split conductor lifting device according to any one of claims 1 to 9, characterized in that, The thread lifting method includes the following steps: Step 1: Equipment installation and positioning: On the high-altitude work platform, the operator uses high-strength bolts to fix the line lifting device to the preset working position on the tower through the suspension ear plate at the top of the frame body. The bolt tightening torque is ≥30N・m to ensure that the installation is firm and there is no loosening or shaking. After installation, check whether the frame is level. Adjust the position of the bolts to keep the frame level and ensure that the two conductors are evenly stressed. Step 2: Wire embedding and limiting: Insert the two wires of the double-split wire into the two bearing channels of the frame body respectively, ensuring that the wires are completely in contact with the anti-slip rubber pads on the inner wall of the channel; then rotate the limiting block at the bottom of the frame to make it perpendicular to the wire axis, thereby limiting and locking the bottom of the wire to prevent the wire from falling off during operation; Step 3: Connect the external lifting device: Connect the hook of the external lifting power device to the lifting force points on both sides of the frame body, ensuring that the hook and force points are firmly connected and there is no risk of slippage; the lifting device should be selected to match the operation requirements, with a rated load ≥30kN, to meet the safety requirements of the lifting operation. Step 4: Synchronous lifting operation: 1-2 operators operate the lifting device to lift the frame body and the guide wire at a uniform speed. The lifting speed is controlled at 5-10mm / s. During the lifting process, observe the status of the two guide wires to ensure that the two guide wires rise synchronously without any obvious height difference. If a slight deviation occurs, the lifting device's tension can be finely adjusted to keep the two wires horizontal. Step 5: Fixing the working position: After the conductor is raised to the preset working height, the lifting position is fixed by the self-locking function of the lifting device or an additional locking device to prevent the conductor from falling back; then the operators can carry out subsequent work such as insulator replacement and line maintenance. Step 6: Lowering the conductor and disassembling the equipment: After the subsequent work is completed, release the locking state of the lifting device, lower the frame body and conductor at a uniform speed, and place the conductor back to its original installation position; rotate the limit block to a horizontal state to release the limit on the conductor, and take the conductor out of the bearing channel; finally, remove the fixing bolts and remove the lifting device from the tower working platform to complete a single operation.

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