Electric transmission line wire laying construction method

Abstract

The invention relates to the technical field of power transmission line construction, in particular to a power transmission line wire laying construction method which comprises the steps of dividing a wire laying section and arranging a tension field and a traction field. A paying-off tackle is hung; the second guide rope is unfolded in a one-traction-three traction unfolding mode; the traction rope is unfolded in a one-traction-one traction unfolding mode; the lead is spread in a one-traction-two traction spreading mode, and efficient and safe spreading of the six-split large-cross-section lead is achieved through the six-split large-cross-section lead spreading device.

Description

Technical Field

[0001] This invention relates to the field of power transmission line construction technology, and more specifically, to a method for laying out conductors for power transmission lines. Background Technology

[0002] In the West-to-East Power Transmission Project, to achieve long-distance power transmission, the main construction projects of ultra-high voltage direct current (UHVDC) transmission projects are ±800kV transmission lines. The electrical sub-conductors are distributed as six-split large-section conductors. The conductor laying of six-split large-section conductors usually has two methods: 3×1-pulling-2 and 2×1-pulling-3. Compared with the two conductor laying methods, the 3×1-pulling-2 conductor laying method has a wider range of applications because the arrangement of various equipment is more reasonable. It is very important to improve the laying efficiency of the existing one-pulling-2 conductor laying method. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the background art mentioned above, and to propose a method for laying out transmission line conductors with large cross-section conductors in ultra-high voltage lines. The technical solution is as follows: A method for laying conductors in a transmission line includes: construction preparation: dividing the laying section, setting up a tension field and a traction field, wherein the tension field and the traction field respectively include a traction machine and a tensioning machine, the traction machine is used to provide traction force during the laying process, and the tensioning machine is used to provide tension during the laying process; Hanging the string laying pulley: Use a pulley hanger to hang the string laying pulley below the suspension point of the conductor on the tower. The string laying pulley is used to guide the laying path. Deploying the guide rope: The guide rope includes a multi-stage guide rope, a first guide rope, and a second guide rope. The first guide rope is deployed by pulling the multi-stage guide rope in stages, and the second guide rope is deployed by a "one-pulling-three" traction deployment method. The "one-pulling-three" traction deployment method means that each first guide rope pulls and deploys three second guide ropes during deployment. Deploying the tow rope: The tow rope is deployed using a "one-to-one" traction deployment method, which means that each second guide rope pulls and deploys one tow rope during deployment. Deploying the conductors: The conductors are deployed using a "one-to-two" traction deployment method, which involves deploying six conductors simultaneously using three traction ropes. The "one-to-two" traction deployment method means that each traction rope pulls and deploys two conductors during deployment.

[0004] This invention achieves efficient and safe deployment of six-split large-section conductors: through the coordinated deployment of guide ropes in stages, the deployment of the second guide rope in a "one-to-three" manner, the deployment of the traction rope in a "one-to-one" manner, and the deployment of the conductor in a "one-to-two" manner, the deployment efficiency is greatly improved; at the same time, the tension deployment throughout the entire process starting from the second guide rope, combined with the use of anti-twist steel wire rope, significantly improves the reliability and safety of the deployment process, solving the problems of low deployment efficiency and insufficient safety of large-section conductors in UHV transmission lines.

[0005] Preferably, the tension field specifically includes: three first tension machines, three second traction machines, and one first mobile crane. The first tension machines are used to provide tension, and the second traction machines are used to provide traction force.

[0006] Preferably, the traction field specifically includes: three first traction machines, three second tension machines, and one second mobile crane. The first traction machines are used to provide traction force, and the second tension machines are used to provide tension.

[0007] Among them, the first tensioning machine is a large-tonnage tensioning machine, the second tensioning machine is a small-tonnage tensioning machine, the first traction machine is a large-tonnage traction machine, the second traction machine is a small-tonnage traction machine, the tensioning field is also equipped with a first mobile crane, and the traction field is also equipped with a second mobile crane. The first mobile crane and the second mobile crane are used to lift various ropes or rope reels during the laying of various ropes or wires to assist in completing the construction of the entire wire laying project.

[0008] Through this invention, the equipment for rationally configuring the tension field and the traction field is used. During the deployment of the guide rope and the traction rope, the tension field mainly provides tension for the traction deployment process, and the traction field mainly provides traction force for the traction deployment process. That is, during the entire process of deploying the conductor, the first tension machine and the first traction machine work together to complete the traction deployment operation from the tension field to the traction field, and the second tension machine and the second traction machine complete the traction deployment operation from the traction field to the tension field.

[0009] As a preferred option, the tension field arrangement specifically includes: three first tension machines placed in parallel, with first ground anchors installed on both sides of each first tension machine, and two guide frames placed behind each first tension machine, with the guide frames and first ground anchors arranged in a fan shape, and the first ground anchors on the outside of the guide frames; three second traction machines placed in parallel on one side of the three first tension machines, with second ground anchors installed on both sides of each second traction machine; and a first mobile crane installed behind the three first tension machines and the three second traction machines.

[0010] As a preferred option, the traction yard layout specifically includes: three first traction machines placed in parallel, with a third ground anchor on both sides of each first traction machine; three second tension machines placed in parallel on one side of the three first traction machines, with a fourth ground anchor on both sides of each second traction machine; and a second mobile crane placed behind the three first traction machines and the three second tension machines.

[0011] In this invention, the tension field and traction field are arranged in a compact and orderly manner. Small-tonnage machinery and large-tonnage machinery are placed separately in the tension field and traction field to ensure the deployment of ropes with different traction or tension requirements. This facilitates operation and management at different construction stages. At the same time, a mobile crane at the rear is used to lift various ropes, wires and rope reels, reducing equipment movement time. The reasonable site layout improves site utilization and construction convenience, and the reasonable arrangement between machinery enhances the continuity and stability of traction operations.

[0012] Preferably, the wire-laying pulley is a three-wheeled pulley, which is hung below the conductor crossarm by a pulley hanger. The pulley hanger includes a horizontally arranged channel steel, with a first pulley hanger plate in the middle of the channel steel and a second pulley hanger plate at both ends of the channel steel. The channel steel is provided with a connecting hanger plate connected to the first pulley hanger plate, and the two ends of the connecting hanger plate are connected to the channel steel and the sub-conductor connecting plate, respectively. The sub-conductor connecting plate is suspended below the conductor crossarm by a V-shaped suspension. The three-wheeled pulley is hung on the first pulley hanger plate and the second pulley hanger plate, respectively.

[0013] This invention utilizes a pulley hanger in conjunction with a three-wheeled pulley, with channel steel providing stable support as the main structure. The clearly defined roles of each hanger plate ensure precise installation of the pulley. The central wheel groove of the three-wheeled pulley allows the main traction rope to pass through, while the side wheel grooves allow the sub-guide wires to pass through, thus separating the paths of the traction rope and the guide wires and preventing mutual friction and entanglement. The V-shaped suspension's sub-guide wire connecting plate ensures balanced stress on the overall structure, improving the safety of the pulley suspension and the smoothness of the guide wire deployment.

[0014] As a preferred method, a primary guide rope is deployed using a rotorcraft to pull and deploy the primary guide rope in each line laying section. After the primary guide rope is deployed, a secondary guide rope is deployed using the primary guide rope. The secondary guide rope is deployed in each laying section. After the secondary guide rope is deployed, the secondary guide rope is connected in all laying sections. After the secondary guide rope is laid out, a tertiary guide rope is laid out using the secondary guide rope until the tertiary guide rope is connected in all laying sections. After the third-level guide rope is deployed, a first guide rope is deployed by pulling the third-level guide rope until the first guide rope is connected in all laying sections. After the first guide rope is deployed, the "one-pulling-three" deployment method is adopted, and the first guide rope pulls and deploys three second guide ropes until the second guide ropes are connected in all laying sections. After the second guide rope is deployed, the three traction ropes are deployed in a "one-to-one" manner, using the second guide rope to pull the three traction ropes until the traction ropes are connected in all the laying sections.

[0015] This invention employs a "from thin to thick, graded deployment" strategy during the deployment of guide ropes and traction ropes. Leveraging the rotorcraft's superior carrying capacity, the deployment of the primary guide rope is flexible, efficient, and adaptable to complex terrain. From the deployment of the secondary guide rope onwards, tension deployment is used throughout, preventing damage to ground objects or the ropes themselves during construction, thus reducing losses and ensuring subsequent deployment stability. The "one-to-three" deployment method for the second guide rope significantly reduces the number of deployments and the number of times non-metallic guide ropes pull metallic guide ropes, improving construction efficiency. The "one-to-one" deployment method for all ropes ensures precise tension control for each rope during deployment, and the graded deployment method allows the ropes to gradually adapt to the load, reducing safety risks during deployment.

[0016] As a preferred method, deploying the secondary guide rope specifically includes: using a traction winch to pull the primary guide rope, using a rope slacker to apply tension to the secondary guide rope, and connecting the primary guide rope and the secondary guide rope through a rotary connector; The deployment of the third-level guide rope specifically includes: threading the third-level guide rope into a first tension machine in the tension field, threading the second-level guide rope into a first traction machine in the traction field, and connecting the second-level guide rope and the third-level guide rope through a rotary connector; The deployment of the first guide rope specifically includes: threading the first guide rope into a first tensioning machine in the tension field; and threading the third-stage guide rope into a first traction machine in the traction field.

[0017] Through this invention, during the deployment of the secondary guide rope, the rope slacker and rotary connector work together to apply stable tension while preventing rope twisting. Simultaneously, the second traction machine and the second tension machine provide traction and tension respectively, ensuring a smooth and efficient deployment. During the deployment of the tertiary guide rope and the first guide rope, the first tension machine and the first traction machine work together, using the rotary connector to reliably connect different ropes, ensuring effective tension application from the initial deployment stage. This improves the stability and safety of deploying each level of guide rope and the first guide rope, reducing the risk of rope damage.

[0018] As a preferred option, after the first guide rope is deployed, three second guide ropes are threaded into three first tension machines in the tension field, and the first guide rope is threaded into one first traction machine in the traction field. A first guide rope and three second guide ropes are connected by a traction board; The deployment method adopts the "one-pulling-three" approach, using one first guide rope to pull and deploy three second guide ropes until the second guide ropes are connected in all deployment sections.

[0019] This invention utilizes a "one-to-three" deployment method, employing a first guide rope to pull and deploy three second guide ropes. The "one-to-three" guide plate enables efficient power distribution, with three first tension machines providing independent tension control for each of the three second guide ropes, ensuring uniform tension in each rope. The single first guide rope simultaneously pulls the three second guide ropes, reducing the investment in traction equipment and operational steps, significantly improving the deployment efficiency of the second guide ropes, and ensuring deployment quality through controllable tension.

[0020] As a preferred option, after the traction rope is deployed, six guide ropes are threaded into three first tension machines in the tension field, with two guide ropes threaded into each first tension machine, and three traction ropes are threaded into three first traction machines in the traction field. A traction rope and two wires are connected by a traction board; The deployment method adopts a "one-pulling-two" approach, using three traction ropes to simultaneously pull and deploy six conductors until the conductors are connected in all deployment sections.

[0021] This invention employs a "one-pulling-two-layout" method for laying conductors, combining three first tensioning machines and three first traction machines. Each machine is responsible for applying tension or pulling two conductors, thereby enabling the simultaneous laying of six conductors by three traction ropes. The "one-pulling-two-walking" method ensures a reliable connection between the traction ropes and the conductors and uniform force transmission. One phase conductor can be laid out in a single operation, maximizing the efficiency of conductor laying. Furthermore, the synchronous control of multiple machines ensures consistent conductor tension, preventing conductors from becoming too slack or too tight. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall process of the transmission line conductor laying construction method in this embodiment.

[0023] Figure 2 This is a schematic diagram of the tension field arrangement in this embodiment.

[0024] Figure 3 This is a schematic diagram of the traction field layout in this embodiment.

[0025] Figure 4 This is a schematic diagram of the line-laying pulley suspension in this embodiment.

[0026] Figure 5 This is a schematic diagram of the trolley hanger in this embodiment.

[0027] Figure 6 This is a schematic diagram of the deployment of the primary guide rope in this embodiment.

[0028] Figure 7 This is a schematic diagram of the deployment of the secondary guide rope in this embodiment.

[0029] Figure 8 This is a schematic diagram of the deployment of the three-stage guide rope in this embodiment.

[0030] Figure 9 This is a schematic diagram of the deployment of the first guide rope in this embodiment.

[0031] Figure 10 This is a schematic diagram of the deployment of the second guide rope in this embodiment.

[0032] Figure 11 This is a schematic diagram of the deployment of the traction rope in this embodiment.

[0033] Figure 12 This is a schematic diagram of the deployment of the conductor in this embodiment. Detailed Implementation

[0034] To further understand the content of this invention, the invention will be described in detail with reference to the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0035] like Figure 1-12 As shown, this embodiment provides a method for laying out conductors of a transmission line, which includes: construction preparation: dividing the laying section, setting up a tension field and a traction field, wherein the tension field and the traction field respectively include a traction machine and a tensioning machine, the traction machine is used to provide traction force during the laying process, and the tensioning machine is used to provide tension during the laying process; Hanging the string laying pulley: Use a pulley hanger to hang the string laying pulley below the suspension point of the conductor on the tower. The string laying pulley is used to guide the laying path. Deploying the guide rope: The guide rope includes a multi-stage guide rope, a first guide rope, and a second guide rope. The first guide rope is deployed by pulling the multi-stage guide rope in stages, and the second guide rope is deployed by a "one-pulling-three" traction deployment method. The "one-pulling-three" traction deployment method means that each first guide rope pulls and deploys three second guide ropes during deployment. Deploying the tow rope: The tow rope is deployed using a "one-to-one" traction deployment method, which means that each second guide rope pulls and deploys one tow rope during deployment. Deploying the conductors: The conductors are deployed using a "one-to-two" traction deployment method, which involves deploying six conductors simultaneously using three traction ropes. The "one-to-two" traction deployment method means that each traction rope pulls and deploys two conductors during deployment.

[0036] This embodiment achieves efficient and safe deployment of six-split large-section conductors: through the coordinated deployment of guide ropes in stages, the deployment of the second guide rope in a "one-to-three" manner, the deployment of the traction rope in a "one-to-one" manner, and the deployment of the conductor in a "one-to-two" manner, the deployment efficiency is greatly improved; at the same time, the tension deployment throughout the entire process starting from the second-level guide rope, combined with the use of anti-twist steel wire rope, significantly improves the reliability and safety of the deployment process, solving the problems of low deployment efficiency and insufficient safety of large-section conductors in UHV transmission lines.

[0037] In this embodiment, the tension field specifically includes: three first tension machines, three second traction machines, and one first mobile crane. The first tension machines are used to provide tension, and the second traction machines are used to provide traction force.

[0038] The traction yard specifically includes: three first traction machines, three second tension machines, and one second mobile crane. The first traction machines are used to provide traction force, and the second tension machines are used to provide tension.

[0039] Tension field arrangement as follows Figure 2 As shown, the traction field layout is as follows Figure 3 As shown, the first tensioning machine is a large-tonnage tensioning machine, referred to as the large tensioning machine, and the second tensioning machine is a small-tonnage tensioning machine, referred to as the small tensioning machine. The first traction machine is a large-tonnage traction machine, referred to as the large traction machine, and the second traction machine is a small-tonnage traction machine, referred to as the small traction machine. The tensioning field is also equipped with a first mobile crane, and the traction field is also equipped with a second mobile crane. The first mobile crane and the second mobile crane are used to lift various ropes or rope reels during the laying of various ropes or conductors to assist in completing the construction of the entire conductor laying project.

[0040] Through this embodiment, the equipment of the tension field and the traction field are reasonably configured. During the deployment of the guide rope and the traction rope, the tension field mainly provides tension for the traction deployment process, and the traction field mainly provides traction force for the traction deployment process. That is, during the entire process of deploying the conductor, the first tension machine and the first traction machine work together to complete the traction deployment operation from the tension field to the traction field, and the second tension machine and the second traction machine complete the traction deployment operation from the traction field to the tension field.

[0041] In this embodiment, as Figure 2 As shown, the tension field arrangement specifically includes: three first tension machines placed in parallel, with first ground anchors set on both sides of each first tension machine, and two guide frames placed behind each first tension machine. The guide frames and first ground anchors are distributed in a fan shape, with the first ground anchors on the outside of the guide frames; three second traction machines placed in parallel on one side of the three first tension machines, with second ground anchors set on both sides of each second traction machine; and a first mobile crane set behind the three first tension machines and the three second traction machines.

[0042] In this embodiment, as Figure 3 As shown, the traction yard layout specifically includes: three first traction machines placed in parallel, with a third ground anchor set on both sides of each first traction machine; three second tension machines placed in parallel on one side of the three first traction machines, with a fourth ground anchor set on both sides of each second traction machine; and a second mobile crane set behind the three first traction machines and the three second tension machines.

[0043] In this embodiment, the tension field and traction field are arranged in a compact and orderly manner. Small-tonnage machinery and large-tonnage machinery are placed separately in the tension field and traction field to ensure the deployment of ropes with different traction or tension requirements. This facilitates operation and management at different construction stages. At the same time, a mobile crane at the rear is used to lift various ropes, wires and rope reels, reducing equipment movement time. The reasonable site layout improves site utilization and construction convenience, and the reasonable arrangement between machinery enhances the continuity and stability of traction operations.

[0044] In this embodiment, the wire-laying pulley is a three-wheeled pulley, which is hung below the conductor crossarm by a pulley hanger. The pulley hanger includes a horizontally arranged channel steel 1, with a first pulley hanger 4 in the middle of the channel steel 1 and a second pulley hanger 2 at both ends of the channel steel 1. A connecting hanger 3 is provided on the channel steel 1 and connected to the first pulley 4 hanger. The two ends of the connecting hanger 3 are connected to the channel steel 1 and the sub-conductor connecting plate, respectively. The sub-conductor connecting plate is suspended below the conductor crossarm by a V-shaped suspension. The three-wheeled pulley is hung on the first pulley hanger 4 and the second pulley hanger 2, respectively.

[0045] A three-wheeled pulley is a three-wheeled line-laying pulley, such as Figure 5 As shown, the second trolley mounting plate 2 is connected to the three-wheeled trolley by a parallel mounting plate 5. The three three-wheeled trolleys are arranged parallel and equidistantly, and each three-wheeled trolley has three pulley grooves with smooth surfaces. The channel steel 1 is the main structure of the trolley hanger and also the main structure of the trolley bracket used to hang the three three-wheeled trolleys. It supports the overall structure and connects the trolleys and the sub-guide rail connecting plate. The second trolley mounting plates 2 at both ends are used to hang two three-wheeled trolleys respectively and are fixed to both ends of the channel steel. The first trolley mounting plate 4 has two functions: first, it connects to the upper connecting plate to fix the entire hanger to the sub-guide rail connecting plate; second, it is used to hang the middle trolley. The parallel mounting plate 5 is directly connected to the three-wheeled trolleys.

[0046] Starting from the deployment of the secondary guide rope, pulleys are used to guide the paths of all types of ropes or conductors. Throughout the construction process, when pulleys are used, all types of ropes or conductors are symmetrically positioned on the pulleys to ensure symmetrical paths and overall balance during the deployment process, thus ensuring the smooth progress of the entire conductor deployment process.

[0047] In this embodiment, the pulley hanger is used in conjunction with the three-wheeled pulley. The channel steel 1 serves as the main structure to provide stable support, and each hanging plate 5 has a clear function to achieve precise hanging of the pulley. The middle wheel groove of the three-wheeled pulley is for the main traction rope to pass through, and the wheel grooves on both sides are for the sub-guide wires to pass through, so as to separate the paths of the traction rope and the guide wires and avoid mutual friction and entanglement. The sub-guide wire connecting plate of the V-shaped suspension ensures that the overall structure is subjected to balanced force, which improves the safety of the pulley suspension and the smoothness of the guide wire deployment.

[0048] In this embodiment, a primary guide rope is deployed using a rotorcraft to pull and deploy the primary guide rope in each line laying section. After the primary guide rope is deployed, a secondary guide rope is deployed using the primary guide rope. The secondary guide rope is deployed in each laying section. After the secondary guide rope is deployed, the secondary guide rope is connected in all laying sections. After the secondary guide rope is laid out, a tertiary guide rope is laid out using the secondary guide rope until the tertiary guide rope is connected in all laying sections. After the third-level guide rope is deployed, a first guide rope is deployed by pulling the third-level guide rope until the first guide rope is connected in all laying sections. After the first guide rope is deployed, the "one-pulling-three" deployment method is adopted, and the first guide rope pulls and deploys three second guide ropes until the second guide ropes are connected in all laying sections. After the second guide rope is deployed, the three traction ropes are deployed in a "one-to-one" manner, using the second guide rope to pull the three traction ropes until the traction ropes are connected in all the laying sections.

[0049] like Figures 6-11 As shown, in this embodiment, the primary guide rope uses φ3.5 Dyneema rope, and a rotorcraft is used to pull and deploy one primary guide rope to complete the traction deployment from the traction field to the tension field; the secondary guide rope uses φ13 high-strength wire, and a "one-to-one" deployment method is adopted, using one primary guide rope to pull and deploy one secondary guide rope to complete the traction deployment from the traction field to the tension field; the tertiary guide rope uses φ16 high-strength wire, and a "one-to-one" deployment method is adopted, using one secondary guide rope to pull and deploy one tertiary guide rope to complete the traction deployment from the tension field to the traction field; the first guide rope uses φ16 wire. The twisted wire rope is deployed using a "one-to-one" method, where a first guide rope is deployed using a three-stage guide rope to complete the deployment from the tension field to the traction field. The second guide rope is a 16mm anti-twist wire rope, deployed using a "one-to-three" method, using a "one-to-three" guide plate, where three second guide ropes are deployed using a first guide rope to complete the deployment from the tension field to the traction field. The traction rope is a 18mm anti-twist wire rope, deployed using a "one-to-one" method, where three traction ropes are deployed using three second guide ropes, i.e., each second guide rope deploys one traction rope.

[0050] The multi-stage guide rope deployment process: The gyroplane deploys the primary guide rope in segments, with each segment ideally 1-1.5 km long. A φ3.5 Dyneema rope is pre-wound onto a rope spool. The gyroplane pulls the φ3.5 Dyneema rope over the tower heads of each level within the segment, dropping it after passing the last tower and securing it. After the φ3.5 Dyneema rope deployment is complete, a φ13 high-strength wire is used as the secondary guide rope, pulled by the φ3.5 Dyneema rope. A motorized winch is used at the traction end to drive the φ3.5 Dyneema rope. Tension is applied to the φ13 strong wire using a rope slacker. The two-stage guide ropes are connected by a rotating connecting machine. The secondary guide rope is laid out in segments. After each segment is laid out, the secondary guide ropes are connected as a whole in the entire laying section. After the secondary guide ropes are laid out, they are connected throughout the entire laying section. The tertiary guide rope is threaded into the tension machine in the tension field, and the secondary guide rope is threaded into the traction machine in the traction field. The tension of the φ13 strong wire is used to pull the φ16 strong wire until the φ16 strong wire is connected throughout the entire laying section.

[0051] The process of deploying the guide ropes: After the three-stage guide ropes are deployed, they are connected throughout the entire laying section. In the tension field, the first guide rope is threaded into the tension machine, and in the traction field, the third-stage guide rope is threaded into the traction machine. The tension of the Φ16 high-strength ribbon is used to pull the Φ16 anti-twist steel wire rope until the Φ16 anti-twist steel wire rope is connected throughout the entire laying section. After the first guide rope is deployed, it is connected throughout the entire laying section. In the tension field, the three second guide ropes are threaded into three tension machines respectively, and in the traction field, the first guide rope is threaded into one traction machine. The tension of the three Φ16 anti-twist steel wire ropes is pulled by one traction and three-walking plate until the three Φ16 anti-twist steel wire ropes are connected throughout the entire laying section.

[0052] The process of deploying the traction rope: After the three second guide ropes are deployed, the three traction ropes are threaded into three tension machines in the tension field, and the three second guide ropes are threaded into three traction machines in the traction field. The traction method is one-to-one, using the 16 anti-twist steel wire rope guide rope to pull the 18 anti-twist steel wire rope traction rope.

[0053] In this embodiment, a "from thin to thick, graded deployment" strategy is adopted during the deployment of guide ropes and traction ropes. Utilizing the rotorcraft's superior carrying capacity, the deployment of the primary guide rope is flexible and efficient, adapting to complex terrain. From the deployment of the secondary guide rope onwards, tension deployment is used throughout, avoiding damage to ground objects or the ropes themselves during construction, thus reducing losses and ensuring the stability of subsequent deployments. The second guide rope is deployed using a "one-to-three" deployment method, significantly reducing the number of guide rope deployments and the number of times non-metallic guide ropes pull metallic guide ropes, improving construction efficiency. The "one-to-one" deployment method for all ropes ensures precise tension control for each rope during deployment, and the graded deployment method allows the ropes to gradually adapt to the load, reducing safety risks during deployment.

[0054] In this embodiment, deploying the secondary guide rope specifically includes: using a traction winch to pull the primary guide rope, using a rope slacker to apply tension to the secondary guide rope, and connecting the primary guide rope and the secondary guide rope through a rotary connector; The deployment of the third-level guide rope specifically includes: threading the third-level guide rope into a first tension machine in the tension field, threading the second-level guide rope into a first traction machine in the traction field, and connecting the second-level guide rope and the third-level guide rope through a rotary connector; The deployment of the first guide rope specifically includes: threading the first guide rope into a first tensioning machine in the tension field; and threading the third-stage guide rope into a first traction machine in the traction field.

[0055] In this embodiment, during the deployment of the secondary guide rope, the rope slacker and rotary connector work together to apply stable tension while preventing rope twisting. Simultaneously, the second traction machine and the second tensioning machine provide small-tonnage traction and tension, respectively, to smoothly and efficiently complete the deployment. During the deployment of the tertiary guide rope and the first guide rope, the first tensioning machine and the first traction machine work together, using the rotary connector to reliably connect the different ropes, ensuring that tension is effectively applied from the initial deployment stage. This improves the stability and safety of the deployment of each level of guide rope and the first guide rope, reducing the risk of rope damage.

[0056] In this embodiment, after the first guide rope is deployed, three second guide ropes are threaded into three first tension machines in the tension field, and the first guide rope is threaded into one first traction machine in the traction field. A first guide rope and three second guide ropes are connected by a traction board; The deployment method adopts the "one-pulling-three" approach, using one first guide rope to pull and deploy three second guide ropes until the second guide ropes are connected in all deployment sections.

[0057] In the "one-to-three" deployment method, where one first guide rope pulls three second guide ropes, each first guide rope and the three second guide ropes it pulls pass through the same pulley. In this embodiment, a "one-to-three" deployment method is used, where a first guide rope pulls and deploys three second guide ropes. The "one-to-three" guide plate achieves efficient power distribution, and three first tension machines provide independent tension control for each of the three second guide ropes, ensuring uniform tension for each guide rope. The single first guide rope simultaneously pulls the three second guide ropes, reducing the investment in traction equipment and operating steps, significantly improving the deployment efficiency of the second guide ropes, and ensuring deployment quality through controllable tension.

[0058] In this embodiment, after the traction rope is deployed, six guide ropes are threaded into three first tension machines in the tension field, with two guide ropes threaded into each first tension machine. In the traction field, three traction ropes are threaded into three first traction machines. A traction rope and two wires are connected by a traction board; The deployment method adopts a "one-pulling-two" approach, using three traction ropes to simultaneously pull and deploy six conductors until the conductors are connected in all deployment sections.

[0059] When laying the conductors, each traction rope passes through the middle groove of the three-wheeled pulley, while the two conductors it pulls pass through the side grooves of the same three-wheeled pulley.

[0060] In this embodiment, a "one-pulling-two" deployment method is adopted to deploy the conductors. Combined with three first tensioning machines and three first traction machines, each machine is responsible for applying tension or pulling two conductors, thereby realizing the simultaneous deployment of six conductors by three traction ropes. The "one-pulling-two-walking plate" ensures a reliable connection between the traction rope and the conductor and the uniform transmission of force. One phase conductor can be deployed in one operation, maximizing the efficiency of conductor deployment. Moreover, the synchronous control of multiple machines ensures consistent conductor tension and avoids the phenomenon of conductors being too loose or too tight.

[0061] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0062] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. Construction methods for laying conductors for power transmission lines, including: Construction preparation: Divide the laying section, set up the tension field and traction field. The tension field and traction field include a traction machine and a tension machine, respectively. The traction machine is used to provide traction force during the laying process, and the tension machine is used to provide tension during the laying process. Hanging the string laying pulley: Use a pulley hanger to hang the string laying pulley below the suspension point of the conductor on the tower. The string laying pulley is used to guide the laying path. Deploying the guide rope: The guide rope includes a multi-stage guide rope, a first guide rope, and a second guide rope. The first guide rope is deployed by pulling the multi-stage guide rope in stages, and the second guide rope is deployed by a "one-pulling-three" traction deployment method. The "one-pulling-three" traction deployment method means that each first guide rope pulls and deploys three second guide ropes during deployment. Deploying the tow rope: The tow rope is deployed using a "one-to-one" traction deployment method, which means that each second guide rope pulls and deploys one tow rope during deployment. Deploying the conductors: The conductors are deployed using a "one-to-two" traction deployment method, which involves deploying six conductors simultaneously using three traction ropes. The "one-to-two" traction deployment method means that each traction rope pulls and deploys two conductors during deployment.

2. The method for laying conductors for transmission lines according to claim 1, wherein, The tension field specifically includes: three first tension machines and three second traction machines. The first tension machines are used to provide tension, and the second traction machines are used to provide traction force.

3. The method for laying conductors for transmission lines according to claim 2, wherein, The tension field arrangement specifically includes: Three tensioning machines are placed in parallel. Each tensioning machine has a ground anchor on both sides. Two guide frames are placed behind each tensioning machine. The guide frames and ground anchors are distributed in a fan shape, with the ground anchors on the outside of the guide frames. Three second traction machines are placed parallel to one side of three first tension machines, and second ground anchors are installed on both sides of each second traction machine; A first mobile crane is set up behind the three first tension machines and the three second traction machines.

4. The method for laying conductors for transmission lines according to claim 1, wherein, The traction field specifically includes: three first traction machines and three second tension machines. The first traction machines are used to provide traction force, and the second tension machines are used to provide tension.

5. The method for laying conductors for transmission lines according to claim 4, wherein, The specific layout of the traction yard includes: Three first traction machines are placed in parallel, and a third ground anchor is set on both sides of each first traction machine; Three second tensioners are placed parallel to one side of three first tractioners, and a fourth ground anchor is installed on both sides of each second tractioner. A second mobile crane is installed behind the three first traction machines and the three second tension machines.

6. The method for laying conductors in transmission lines according to claim 1, wherein, The method of using a pulley to hang a wire-laying pulley below the conductor hanging point on the tower includes: The line-laying pulley is a three-wheeled pulley, which is hung below the conductor crossarm by a pulley hanger. The pulley hanger includes a horizontally arranged channel steel, with a first pulley hanger plate in the middle of the channel steel and a second pulley hanger plate at both ends of the channel steel; a connecting hanger plate connected to the first pulley hanger plate is provided on the channel steel, and the two ends of the connecting hanger plate are respectively connected to the channel steel and the sub-conductor connecting plate; the sub-conductor connecting plate is suspended below the conductor crossarm by a V-shaped suspension; three-wheeled pulleys are respectively hung on the first pulley hanger plate and the second pulley hanger plate.

7. The method for laying conductors for transmission lines according to claim 1, wherein, The deployment of the guide rope and the deployment of the traction rope specifically include: A primary guide rope is deployed using a rotorcraft to pull it, and the primary guide rope is deployed in each line laying section. After the primary guide rope is deployed, a secondary guide rope is deployed using the primary guide rope. The secondary guide rope is deployed in each laying section. After the secondary guide rope is deployed, the secondary guide rope is connected in all laying sections. After the secondary guide rope is laid out, a tertiary guide rope is laid out using the secondary guide rope until the tertiary guide rope is connected in all laying sections. After the third-level guide rope is deployed, a first guide rope is deployed by pulling the third-level guide rope until the first guide rope is connected in all laying sections. After the first guide rope is deployed, the "one-pulling-three" deployment method is adopted, and the first guide rope pulls the deployment of three second guide ropes until the second guide ropes are connected in all laying sections. After the second guide rope is deployed, the three traction ropes are deployed in a "one-to-one" manner, using the second guide rope to pull the three traction ropes until the traction ropes are connected in all the laying sections.

8. The method for laying conductors for transmission lines according to claim 7, wherein: The deployment of the secondary guide rope specifically includes: using a traction winch to pull the primary guide rope, using a rope slacker to apply tension to the secondary guide rope, and connecting the primary guide rope and the secondary guide rope through a rotary connector; The deployment of the third-level guide rope specifically includes: threading the third-level guide rope into a first tension machine in the tension field, threading the second-level guide rope into a first traction machine in the traction field, and connecting the second-level guide rope and the third-level guide rope through a rotary connector; The deployment of the first guide rope specifically includes: threading the first guide rope into a first tensioning machine in the tension field; and threading the third-stage guide rope into a first traction machine in the traction field.

9. The method for laying conductors in a transmission line according to claim 7, wherein, After the first guide rope is deployed, a "one-pulling-three" deployment method is adopted, in which the first guide rope pulls and deploys three second guide ropes until the second guide ropes are connected in all laying sections. Specifically, this includes: After the first guide rope is deployed, three second guide ropes are threaded into three first tension machines in the tension field, and the first guide rope is threaded into one first traction machine in the traction field. A first guide rope and three second guide ropes are connected by a traction board; The deployment method adopts the "one-pulling-three" method, using one first guide rope to pull and deploy three second guide ropes until the second guide ropes are connected in all deployment sections.

10. The method for laying conductors in a transmission line according to claim 7, wherein, The method of simultaneously deploying six conductors using three traction ropes in a "one-to-two" manner specifically includes: After the traction rope is deployed, six guide ropes are threaded into three first tension machines in the tension field, with two guide ropes threaded into each first tension machine. In the traction field, three traction ropes are threaded into three first traction machines. A traction rope and two wires are connected by a traction board; The deployment method adopts a "one-pulling-two" approach, using three traction ropes to simultaneously pull and deploy six conductors until the conductors are connected in all deployment sections.

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