One-traction-four-unfolding guide rope releasing method

Abstract

The invention discloses a one-traction-four rope unwinding method, and relates to the field of power transmission line wire traction and unwinding. In the lead traction and unfolding process of a power transmission line, a one-traction-multiple traction plate is generally applied to one-traction-multiple lead traction and unfolding, however, the lead needs to be unfolded by a traction rope before being unfolded, and at present, the traction rope is mostly pulled by a single line when being unfolded, so that the traction efficiency is relatively low. According to the method, when the traction ropes are unfolded, large traction and large tension are utilized, one traction rope pulls four traction ropes through a one-traction-four traction plate, and when four second traction ropes are used for traction, rope separation is conducted one by one foundation. According to the four-traction-rope traction device, traction and rope separation of the four traction ropes are conducted through the one-traction-four traction plate, the traction efficiency of the traction ropes can be effectively improved, compared with a traction mode of a single traction rope or a small number of traction ropes, the working efficiency is greatly improved, the four traction ropes can conduct traction at the same time in parallel, the waiting time and repeated operation are reduced, and therefore the whole traction operation period is shortened.

Description

Technical Field

[0001] This invention relates to the field of power transmission line conductor traction and deployment, and in particular to a method for one-pulling-four-deployment guide rope. Background Technology

[0002] In the process of laying and traction of power transmission line conductors, the use of a single-pulling-multiple-pulling plate for laying and traction of multiple conductors has become widespread, which can greatly speed up the laying of conductors. However, the conductors need to be laid and traction ropes need to be laid before laying. At present, single-line traction is still mostly used when laying the traction ropes, which has relatively low traction efficiency. Summary of the Invention

[0003] The technical problem to be solved and the technical task proposed by this invention is to improve and refine existing technical solutions, and to provide a method for releasing a traction rope with one pull and four extensions, in order to improve the traction efficiency of the traction rope. To this end, this invention adopts the following technical solution.

[0004] A method for releasing a guide rope with one pull and four extensions includes the following steps: 1) From thin to thick, a total of three Dyneema ropes were pulled by drones and manually switched at each stage; 2) Using the central tension and traction, a first traction rope is pulled by a third Dyneema rope, and then the first traction rope pulls a second traction rope. The second traction rope has a greater load-bearing capacity than the first traction rope. 3) Using a large traction and large tension, one second traction rope pulls four first traction ropes through a one-traction-four-traction plate. When the four second traction ropes are pulling, the ropes are separated one base at a time. 4) Utilizing the central traction and tension, four first traction ropes pull one optical cable and three second traction ropes. 5) Utilizing a large-scale traction system, three second traction ropes are used to pull and deploy four sub-conductors using a one-pull-four-traction plate. This method, employing a large-scale traction system, effectively improves the traction efficiency of the four traction ropes by using a one-pull-four-traction plate. Compared to traction methods using a single rope or a small number of ropes, it significantly increases work efficiency. The four traction ropes can pull simultaneously in parallel, reducing waiting time and repetitive operations, thereby shortening the entire traction operation cycle.

[0005] As a preferred technical means: In step 3), the one-traction-four-traction plate includes a guide plate, a traction rotary connector, four following rotary connectors, a tail hammer, a front Dyneema rope, a rear Dyneema rope, and an anti-bending connector. The four following rotary connectors include a first following rotary connector, a second following rotary connector, a third following rotary connector, and a fourth following rotary connector. The second traction rope is connected to the traction rotary connector. The first, third, and fourth following rotary connectors are each connected to a front Dyneema rope. The front Dyneema rope is connected to a rear Dyneema rope through the anti-bending connector. The three rear Dyneema ropes are each connected to a first traction rope through a rotary joint. The three first traction ropes are a first steel wire traction rope, a third steel wire traction rope, and a fourth steel wire traction rope, respectively. The second following rotary connector is directly connected to a first traction rope that serves as the second steel wire traction rope. This effectively realizes the one-traction-four-traction plate structure.

[0006] As a preferred technical means: Step 3), the rope-separating process at each base includes the following steps: 301) The rope-splitting personnel first anchor the three Dyneema temporary anchor ropes to the ground wire top frame, the upper conductor crossarm, and the lower conductor crossarm respectively. After the walkway passes the laying pulley of each tower, slowly pull the rope so that the swivel joint between the rear Dyneema rope and the first traction rope is pulled to the side of the laying pulley. The traction machine stops pulling. Then, the three Dyneema temporary anchor ropes are connected to the heads of the first steel wire traction rope, the third steel wire traction rope, and the fourth steel wire traction rope respectively through shackles to complete the connection of the Dyneema temporary anchor ropes. 302) The traction machine slowly loosens, while the tensioner retracts the second steel wire traction rope, causing the slide to slowly move backward. After the Dyneema anchor ropes that anchor the first, third, and fourth steel wire traction ropes are under tension, the second steel wire traction rope is retracted until the slide reaches the appropriate position and the retraction stops. 303) At the side of the middle conductor crossarm laying pulley, remove the anti-bending connector (6) connecting the front Dyneema rope and the rear Dyneema rope. The rope splitter uses the lifting rope to lift the front Dyneema rope and the rear Dyneema rope to the corresponding ground wire top frame laying pulley or the upper and lower conductor crossarm laying pulley. At the same time, the rope ends of the front Dyneema rope and the rear Dyneema rope are passed through their respective laying pulleys and laid to the middle wheel, and then reconnected with the anti-bending connector (6). 304) The traction machine slowly pulls, and the tensioner loosens the second steel wire traction rope until the Dyneema temporary anchor ropes anchoring the first, third, and fourth steel wire traction ropes are loosened. At the same time, the shackles connecting the temporary anchor ropes are pulled to their respective pulleys and then the machine is stopped and removed. The tension of the first, second, third, and fourth steel wire traction ropes is adjusted, and then the traction continues. 305) After pulling the line to the next tower's cable-laying pulley, repeat steps 301) to 304) to split the line until the entire section is pulled in place. This method effectively implements the process of splitting the ropes base by base using a one-pulling-four-traction-plate system. By anchoring three Dyneema temporary anchor ropes to the ground wire top frame, the upper conductor crossarm, and the lower conductor crossarm respectively, the stability and safety of each traction rope during the traction process are ensured. This anchoring method effectively prevents the traction ropes from shifting or swinging due to wind or other external forces, thereby avoiding potential safety accidents. During the rope splitting process, the traction ropes are gradually disconnected and reconnected, and the traction tension is adjusted, all under the premise of ensuring safety, reducing the risks in construction. Splitting the ropes base by base avoids the confusion and errors caused by splitting too many ropes at once, effectively improving the construction quality.

[0007] As a preferred technical approach: In step 1), a drone pulls a φ2 Dyneema rope as the initial guide rope for suspended deployment. After deployment, the φ2 Dyneema rope is placed into a laying pulley, and then manually switched to pull a φ5 Dyneema rope from φ2, and then manually switched again to pull a φ10 Dyneema rope from φ5. This process of gradually increasing the diameter of the Dyneema rope through drone pulling and manual switching improves construction efficiency, reduces manpower and material input, and effectively lowers costs.

[0008] As a preferred technical approach: In steps 4) and 5), within the conductor laying pulley, the traction sequence is from left to right and from top to bottom. The traction rope reel is suspended on the reel shaft frame, the traction rope end is led out, and a nylon rope is used as a guide rope to wind the traction rope into the tension wheel. The traction rope and the guide rope are connected by a swivel connector. This traction sequence from left to right and from top to bottom not only conforms to construction practices but also ensures the orderly arrangement of each traction rope within the laying pulley, avoiding crossing and tangling. Using a guide rope also reduces friction and wear on the traction rope when winding into the tension wheel, extending its service life.

[0009] As a preferred technical measure: Within the laying section, where the guide rope or traction rope has an upward tower position, a line-pressing pulley should be installed to prevent it from jumping off the track. The line-pressing pulley should be installed 3-5 meters in front of the laying pulley's traction side. Angle towers should be equipped with pre-tilting guy lines. Installing a line-pressing pulley 3-5 meters in front of the laying pulley can control the upward movement of the guide rope or traction rope at the upward tower position, preventing it from slipping out of control and ensuring safety and stability during construction. The pre-tilting guy lines for angle towers are mainly used to adjust the stress state of the angle tower, ensuring its stability and safety during the laying process.

[0010] As a preferred technical approach: when the traction rope is placed in front of the tensioning machine, it is temporarily anchored at both ends of the tensioning field, and the tensioning equipment of different sizes is changed. The anchor rope tension should ensure that the distance between the traction rope and the ground is greater than 5m and the distance from the top of the crossing frame is greater than 3m. A distance between the traction rope and the ground greater than 5m ensures that the traction rope will not touch the ground due to insufficient tension during the traction process, thereby avoiding potential dangers such as wear, breakage, or electric shock. A distance from the top of the crossing frame greater than 3m prevents the traction rope from colliding with the crossing frame due to tension changes or wind forces during the traction process, which could lead to equipment damage or safety accidents.

[0011] Beneficial effects: This method utilizes a large-scale traction system, employing a one-traction-four-traction plate to pull and separate four traction ropes, effectively improving the traction efficiency of the ropes. Compared to traction methods using a single rope or a small number of ropes, it significantly increases work efficiency. The four traction ropes can pull simultaneously in parallel, reducing waiting time and repetitive operations, thereby shortening the entire traction operation cycle. Separating the ropes base by base avoids confusion and errors caused by separating too many ropes at once, effectively improving construction quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the process of the present invention.

[0013] Figure 2 This is a schematic diagram of the tension field operation process of the present invention.

[0014] Figure 3 This is a schematic diagram of the one-traction-four-traction plate structure of the present invention.

[0015] Figure 4 This is a schematic diagram of the branching rope positions when the straight tower of the present invention uses one traction and four traction ropes to pull four first traction ropes.

[0016] Figure 5 This is a schematic diagram of step S301 of the present invention.

[0017] Figure 6 This is a schematic diagram of step S302 of the present invention.

[0018] Figure 7 This is a schematic diagram of steps S303 and S304 of the present invention.

[0019] Figure 8 This is a schematic diagram of the branching rope positions when the tension tower of the present invention uses four first traction ropes with one traction and four tractions.

[0020] In the diagram: 1. Second traction rope; 2. Traction rotary connector; 3. Walking plate; 4. Following rotary connector; 5. Front Dyneema rope; 6. Anti-bending connector; 7. Rear Dyneema rope; 8. Rotary joint; 9. First steel wire traction rope; 10. Second steel wire traction rope; 11. Tail hammer; 12. Third steel wire traction rope; 13. Fourth steel wire traction rope; 14. Dyneema temporary anchor rope; 15. Shackle. Detailed Implementation

[0021] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 , 2 As shown, a method for releasing a guide rope with one pull and four extensions includes the following steps: S1: From thin to thick, a total of three Dyneema ropes are pulled by drone and manually switched at each stage. The specific process is as follows: the drone pulls the φ2 Dyneema rope as the primary guide rope for suspension and deployment. After deployment, the φ2 Dyneema rope is placed in the laying pulley. Then, it is manually switched to pull the φ5 Dyneema rope with the φ2 rope. Then, it is manually switched again to pull the φ10 Dyneema rope with the φ5 rope. S2: Using the central tension, a first traction rope is pulled by a φ10 Dyneema rope, and then a second traction rope 1 is pulled by the first traction rope. In this example, the first traction rope is a square 15 steel wire rope and the second traction rope 1 is a square 26 steel wire rope. S3: Using a large traction and large tension, one second traction rope 1 pulls four first traction ropes through a one-traction-four-traction plate. When the four second traction ropes 1 are pulling, the four first traction ropes are separated one by one. S4: Using the central tension and traction, four first traction ropes pull one optical cable and three second traction ropes 1; S5: Using the large traction and large tension, the three second traction ropes 1 are used to pull and deploy the four sub-conductors by pulling and releasing the four traction plates.

[0023] In step S3, such as Figure 3As shown, the one-traction-four-traction plate includes a guide plate 3, a 250kN traction rotary connector 2, four 80kN following rotary connectors 4, a tail hammer 11, a Ф16*50m front Dyneema rope 5, a Ф16*50m rear Dyneema rope 7, and an 80kN anti-bending connector 6. The four 80kN following rotary connectors 4 include a first following rotary connector, a second following rotary connector, a third following rotary connector, and a fourth following rotary connector. The second traction rope 1 is connected to the 250kN traction rotary connector 2. The first following rotary connector, the third following rotary connector, and the fourth following rotary connector are each connected to a Ф16*50m front Dyneema rope 5. *The 50m front Dyneema rope 5 is connected to a Ф16*50m rear Dyneema rope 7 via an anti-bending connector 6. The three Ф16*50m rear Dyneema ropes 7 are each connected to a first traction rope via a swivel joint 8. The three first traction ropes correspond to the first wire traction rope 9, the third wire traction rope 12, and the fourth wire traction rope 13, respectively. The second follower swivel connector directly connects to a first traction rope that serves as the second wire traction rope 10. The fourth wire traction rope 13 is located on the side of the tower, and the first wire traction rope 9 is located on the outside of the tower. That is, from left to right, the arrangement is as follows: fourth wire traction rope 13, third wire traction rope 12, second wire traction rope 10, and first wire traction rope 9.

[0024] Using a large-scale pulling and stretching technique, the second traction rope is deployed with one pull and four extensions of the first traction rope. The positions of the first traction rope's branching points are arranged as follows: Figure 4 As shown, the process of dividing ropes base by base includes the following steps: S301: As Figure 5 As shown, the rope-splitting personnel first anchor three Ф14×30m Dyneema temporary anchor ropes 14 to the ground wire top frame, the upper conductor crossarm, and the lower conductor crossarm, respectively. After the walkway 3 passes the laying pulley of each tower, it is slowly pulled for 120m, that is, the swivel joint 8 between the Ф16*50m specification rear Dyneema rope 7 and the first traction rope is pulled to the side of the laying pulley. The traction machine stops pulling. Then, the three Ф14×30m Dyneema temporary anchor ropes 14 are connected to the heads of the first steel wire traction rope 9, the third steel wire traction rope 12, and the fourth steel wire traction rope 13 through the DG3 shackle 15 to complete the connection of the Dyneema temporary anchor ropes 14. S302: As Figure 6 As shown, the traction machine slowly loosens the tensioner, while the tensioner retracts the second wire traction rope 10, causing the slide plate 3 to slowly retreat. After the Ф14×30m Dyneema temporary anchor rope 14, which anchors the first wire traction rope 9, the third wire traction rope 12, and the fourth wire traction rope 13, is under tension, the second wire traction rope 10 continues to be retracted until the slide plate 3 reaches the appropriate position and the retraction stops. S303: As Figure 7As shown, at the side of the middle conductor crossarm laying pulley, remove the 80kN anti-bending connector 6 connecting the front Dyneema rope 5 and the rear Dyneema rope 7. The rope splitter uses a lifting rope to lift the front Dyneema rope 5 and the rear Dyneema rope 7 to the corresponding ground wire top frame laying pulley or the upper and lower conductor crossarm laying pulleys respectively. At the same time, pass the rope ends of the front Dyneema rope 5 and the rear Dyneema rope 7 through their respective laying pulleys to the middle pulley, and reconnect them with the 80kN anti-bending connector 6. S304: The traction machine slowly pulls, and the tensioner loosens the second wire traction rope 10 until the Dyneema temporary anchor rope 14 anchoring the first wire traction rope 9, the third wire traction rope 12, and the fourth wire traction rope 13 is loosened. At the same time, the DG3 shackle 15 connecting the temporary anchor rope is pulled to the side of its respective pulley and then the machine is stopped and removed. The tension of the first wire traction rope 9, the second wire traction rope 10, the third wire traction rope 12, and the fourth wire traction rope 13 is adjusted, and then the traction continues. S305: After the line is pulled to the next tower, repeat steps S301) to S304) to split the line until the entire section is pulled into place.

[0025] This technical solution can be used in straight-line towers, such as... Figure 4 As shown, it can also be used in tension towers, such as... Figure 8 As shown, its working steps are similar to those of a straight-line tower.

[0026] Inside the ground wire (optical cable) laying pulley, the ground wire (optical cable) is pulled one by one by the first traction rope using the central tensioning.

[0027] Inside the conductor laying pulley, the first traction rope is used to pull the second traction rope 1 using the intermediate tensioning method; then, the second traction rope 1 is used to pull four conductors using the large tensioning method. The traction sequence is from left to right and from top to bottom. The traction rope reel is suspended on the reel shaft frame, and the traction rope end is led out. A Φ14×50m nylon rope is used as the guide rope, and the traction rope is wound into the tension wheel. The traction rope and the guide rope are connected by a 250kN swivel connector. The traction is performed from left to right, that is, from the side of the tower to the outside of the tower, and from top to bottom. This sequence not only conforms to construction practices but also ensures that the traction ropes are arranged in an orderly manner within the laying pulley, avoiding crossing and tangling. Using the guide rope also reduces the friction and wear generated when the traction rope is wound into the tension wheel, extending the service life of the traction rope.

[0028] Within the laying section, where the guide rope or traction rope has an upward tower position, a line-pressing pulley must be installed, with a dedicated person monitoring it to prevent it from jumping off the track. The line-pressing pulley should be installed 3-5 meters in front of the laying pulley's traction side. Angle towers should be equipped with pre-tilting guy lines, and a dedicated person should monitor them. Installing a line-pressing pulley 3-5 meters in front of the laying pulley can control the upward movement of the guide rope or traction rope at the upward tower position, preventing it from slipping out of control and ensuring safety and stability during construction. The pre-tilting guy lines for angle towers are mainly used to adjust the stress state of the angle towers, ensuring their stability and safety during the laying process.

[0029] When the traction rope is placed in front of the tensioning machine, it is temporarily anchored at both ends of the tensioning field, and the tensioning equipment of different sizes is changed. The anchor rope tension should ensure that the distance between the traction rope and the ground is greater than 5m and the distance from the top of the crossing frame is greater than 3m. A distance between the traction rope and the ground greater than 5m ensures that the traction rope will not touch the ground due to insufficient tension during the traction process, thus avoiding potential dangers such as wear, breakage, or electric shock. A distance from the top of the crossing frame greater than 3m prevents the traction rope from colliding with the crossing frame due to tension changes or wind forces during the traction process, thereby preventing equipment damage or safety accidents.

[0030] The tractor operator should concentrate and remain at his post. Upon receiving any alarm signal from construction personnel, he / she should immediately stop the machine and should not pull without receiving an order from the commander to proceed with the pulling.

[0031] The above-described method of releasing the guide rope with one pull and four extensions is a specific embodiment of the present invention, which has demonstrated the outstanding substantive features and significant progress of the present invention. Based on the actual use needs, equivalent modifications in shape, structure, etc., can be made to it under the guidance of the present invention, and all such modifications are within the scope of protection of this solution.

Claims

1. A method for releasing a guide rope with one pull and four extensions, characterized in that... Includes the following steps: 1) From thin to thick, a total of three Dyneema ropes were pulled by drones and manually switched at each stage; 2) Using the middle tension, after pulling a first traction rope through the third Dyneema rope, the first traction rope pulls the second traction rope (1), and the bearing strength of the second traction rope (1) is greater than that of the first traction rope. 3) Using the large traction and large tension, one second traction rope (1) pulls four first traction ropes through one traction and four traction plates. When pulling the four second traction ropes (1), the ropes are divided one base at a time. 4) Using the central tension and traction, four first traction ropes pull one optical cable and three second traction ropes (1). 5) Using the large traction and large tension, the three second traction ropes (1) are used to pull and release the four sub-conductors by pulling the four traction plates.

2. The method for releasing a guide rope with one pull and four extensions according to claim 1, characterized in that: In step 3), the one-traction-four-traction plate includes a walking plate (3), a traction rotary connector (2), four following rotary connectors (4), a tail hammer (11), a front Dyneema rope (5), a rear Dyneema rope (7), and an anti-bending connector (6). The four following rotary connectors (4) include a first following rotary connector, a second following rotary connector, a third following rotary connector, and a fourth following rotary connector. The second traction rope (1) is connected to the traction rotary connector (2). The first following rotary connector, the third following rotary connector, and the fourth following rotary connector are all connected to a front Dyneema rope (5). The front Dyneema rope (5) is connected to a rear Dyneema rope (7) through the anti-bending connector (6). The three rear Dyneema ropes (7) are each connected to a first traction rope through a rotary joint (8). The three first traction ropes are the first steel wire traction rope (9), the third steel wire traction rope (12), and the fourth steel wire traction rope (13). The second following rotary connector is directly connected to a first traction rope that serves as the second steel wire traction rope (10).

3. The method for releasing a guide rope with one pull and four extensions according to claim 2, characterized in that: Step 3) involves dividing the ropes base by base, which includes the following steps: 301) The rope splitter first anchors the three Dyneema anchor ropes (14) to the ground wire top frame, the upper conductor crossarm and the lower conductor crossarm respectively. When the walkway (3) passes the laying pulley of each tower, it is slowly pulled so that the swivel joint (8) between the rear Dyneema rope (7) and the first traction rope is pulled to the side of the laying pulley. The traction machine stops pulling. Then, the three Dyneema anchor ropes (14) are connected to the heads of the first wire traction rope (9), the third wire traction rope (12) and the fourth wire traction rope (13) through the shackle (15) to complete the connection of the Dyneema anchor ropes (14). 302) The traction machine slowly loosens, and at the same time the tensioner retracts the second wire traction rope (10), so that the walking plate (3) slowly moves backward. After the Dyneema anchor rope (14) anchoring the first wire traction rope (9), the third wire traction rope (12) and the fourth wire traction rope (13) are stressed, the second wire traction rope (10) continues to be retracted, and the retraction stops when the walking plate (3) reaches the appropriate position. 303) At the side of the middle conductor crossarm laying pulley, remove the anti-bending connector (6) connecting the front Dyneema rope (5) and the rear Dyneema rope (7). The rope splitter uses a lifting rope to lift the front Dyneema rope (5) and the rear Dyneema rope (7) to the corresponding ground wire top frame laying pulley or the upper and lower conductor crossarm laying pulley. At the same time, the rope ends of the front Dyneema rope (5) and the rear Dyneema rope (7) are passed through their respective laying pulleys and laid to the middle wheel, and then reconnected with the anti-bending connector (6). 304) The traction machine slowly pulls, and the tensioner loosens the second wire traction rope (10) until the Dyneema temporary anchor rope (14) anchoring the first wire traction rope (9), the third wire traction rope (12) and the fourth wire traction rope (13) loosens. At the same time, the shackle (15) connecting the temporary anchor rope is pulled to the side of its respective pulley and then the machine is stopped and removed. The tension of the first wire traction rope (9), the second wire traction rope (10), the third wire traction rope (12) and the fourth wire traction rope (13) is adjusted, and then the traction continues. 305) After the line is pulled to the next base tower, repeat steps 301) to 304) to split the line until the entire section is pulled into place.

4. The method for releasing a guide rope with one pull and four extensions according to claim 1, characterized in that: In step 1), the drone pulls the φ2 Dyneema rope as the primary guide rope for suspension and deployment. After deployment, the φ2 Dyneema rope is placed in the laying pulley, and then manually switched to pull the φ5 Dyneema rope with the φ2 rope. Then, manually switched again to pull the φ10 Dyneema rope with the φ5 rope.

5. The method for releasing a guide rope with one pull and four extensions according to claim 1, characterized in that: In steps 4) and 5), the traction sequence inside the wire laying trolley is from left to right and from top to bottom. The traction rope reel is suspended on the reel shaft frame, the traction rope head is led out, and a nylon rope is used as a guide rope. The traction rope is wound into the tension wheel, and the traction rope and the guide rope are connected by a rotary connector.

6. The method for releasing a guide rope with one pull and four extensions according to claim 5, characterized in that: Within the laying section, if there is an upward tower position for the guide rope or traction rope, a line pressing pulley should be installed to prevent it from jumping off the trough. The line pressing pulley should be installed 3-5m in front of the traction side of the laying pulley. Angle towers should be equipped with pre-tilting guy wires.

7. The method for releasing a guide rope with one pull and four extensions according to claim 6, characterized in that: When the traction rope is placed in front of the tensioning machine, that is, the traction rope is temporarily anchored at both ends of the tensioning field, and the large and small tensioning equipment is replaced. The anchor rope tension should ensure that the distance between the traction rope and the ground is greater than 5m and the distance from the top of the crossing frame is greater than 3m.

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