Construction method of braiding type net cover connector for crossing railway stringing

Abstract

The invention discloses a construction method of a knittable net cover connector for stringing across a high-speed railway, and relates to the field of construction methods of stringing of electric power lines. Existing crossing construction needs to be carried out in the sunroof period at night, the applicability of assembly type stringing is limited, and the universality of a traction device is poor. According to the method, a woven net sleeve connector is adopted to wrap a strain clamp, a guide rope is spread step by step in stages, ground compression joint is conducted in advance, and a one-traction-one traction mode is adopted. According to the invention, the strain clamp can smoothly pass through the pulley, the main process is daytime operation and the traction tool is universalized, the problems of low construction efficiency at night, high safety risk and difficulty in controlling accumulated errors of a long strain section are effectively solved, and the construction safety, efficiency and quality controllability are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power line stringing construction method, and particularly relates to a woven type net sleeve connector construction method for stringing across a railway. BACKGROUND

[0002] With the rapid development of national economy, the power network construction and the high-speed railway network expansion are promoted synchronously, and the demand for newly-built power transmission line crossing high-speed railway is increasing. Such crossing construction faces extremely high safety standards and complex operation coordination challenges. In the prior art, the core links of stringing construction across high-speed railway, such as installation of protective facilities, deployment of conductor, tightening of conductor and high-altitude pressure connection, must be carried out in the night window point of railway operation. The night work environment leads to the decrease of work efficiency of construction personnel and efficiency of mechanical equipment, and significantly increases the safety risk and management difficulty.

[0003] In addition, the assembly type stringing technology used to improve efficiency is usually limited to the "isolated span" scene in actual application. Its popularization faces two major obstacles: first, for the strain section containing multiple spans, the error of conductor length in the calculation, cutting and erection links will accumulate with the increase of span, resulting in difficulty in guaranteeing the control precision of sag; second, in the traction process, the traditional conductor clamp cannot smoothly pass through the deployment pulley due to its structural limitation, and the specially customized traction device lacks universality, so that the construction process is complex and the cost is high, and there is great uncertainty in construction quality and progress.

[0004] Therefore, there is an urgent need in the art for a stringing construction method across high-speed railway, which can be applied to complete strain section, effectively reduce construction difficulty and safety risk, and improve construction efficiency and quality. SUMMARY

[0005] The technical problem to be solved and the technical task proposed by the present application are to perfect and improve the prior art, provide a woven type net sleeve connector construction method for stringing across a railway, so as to reduce the construction difficulty of power line crossing railway and improve the safety of construction, and solve the problem of uncontrollable construction quality of assembly type stringing. To this end, the present application adopts the following technical scheme.

[0006] A woven type net sleeve connector construction method for stringing across a railway, comprising the following steps: 1) setting traction fields and tension fields on the two sides of the railway A and B respectively, and deploying primary guide ropes by using unmanned aerial vehicles; 2) deploying multiple guide ropes in the direction of traction field and tension field from the two sides of the railway respectively through the tension device combination tension, the multiple guide ropes comprising primary guide ropes, secondary guide ropes and traction ropes, and connecting a torsion-resistant steel wire rope after the traction rope; 3) The anti-twist steel wire rope is connected with multiple guide wires through the "one pull many" connecting plate and the weavable mesh connector, the guide wires are drawn from the tension machine, pass through the wire-drawing pulley of the crossing tower, and are drawn to the ground on the B side of the railway; 4) After the guide wires are drawn to the ground on the B side of the railway, the weavable mesh connector is removed first, then the crimping of the strain clamp of the guide wire is completed, then the weavable mesh connector is used to cover and fasten the strain clamp and the adjacent guide wire segment, and the pre-tensioning operation is performed; 5) During the night maintenance window period of the railway, the traction rope is drawn across the railway and connected with the prepared guide wire; 6) The tensioning device is started, and the guide wire is drawn across the railway by using a single traction machine to draw a single guide wire; 7) The high-altitude wire hanging and tightening operation of the guide wire is performed, and the installation of the crossing tower accessories is completed.

[0007] The method realizes the passing of the strain clamp through the pulley by using the weavable mesh connector, so that the guide wire of the entire strain section can be continuously laid out like a conventional tension stringing, which reduces the difficulty of guide wire laying, improves the construction efficiency, avoids the cumulative error caused by segmented manufacturing and connection in the traditional assembly stringing, and ensures the construction quality. By completing the key and time-consuming processes such as crimping the strain clamp, weaving the mesh, and pre-tensioning on the ground during the day, the operation time and difficulty during the night window period are greatly shortened, and the low human-machine efficiency and accidental risk during night construction are directly reduced. The weavable mesh connector has wide applicability, can replace the wire clamp that cannot pass through the pulley or the customized traction device, and compared with the ordinary mesh connector that cannot install the strain clamp before traction, the construction process is simplified and the cost is reduced.

[0008] As a preferred technical means: in step 1), the primary guide rope is a Dnyima rope, and is laid out by a large-load unmanned aerial vehicle. The large-load unmanned aerial vehicle directly lays out the relatively thin primary guide rope, which eliminates the step of laying out a smaller rope in the traditional way, achieves one-step operation, and greatly improves the efficiency and speed of initial laying of the guide rope.

[0009] As a preferred technical means: in step 2), the secondary guide rope and the traction rope on the side of the traction field to the railway A and the side of the railway B to the tension field are all made of Dnyima rope, and the diameters of the primary guide rope, the secondary guide rope and the traction rope are gradually increased; in the traction guide stage, the traction rope is connected with two levels of anti-twist steel wire ropes in turn, and the two levels of anti-twist steel wire ropes are primary anti-twist steel wire rope and secondary anti-twist steel wire rope respectively, and the diameters are gradually increased. By using the combination of Dnyima rope and anti-twist steel wire rope and the gradually increased rope diameter, the advantages of high strength and light weight of Dnyima rope are fully utilized, so that the early stage of rope laying can be completed by a large amount of manpower, the dependence on large-scale traction equipment and the site requirement are reduced, and at the same time, sufficient strength and anti-twist performance are ensured in the final traction guide.

[0010] As a preferred technical means: in steps 3) and 4), the weavable net connector has a side opening, and the connection mode of the weavable net connector is that the wire is put into the side opening of the net, then the opening is sewn with the same strand of woven steel wire rope according to the original weaving mode, and the tail is bound with iron wire and wrapped with adhesive tape. The side opening structure of the weavable net connector and the connection mode of the weaving and sewing and the tail binding realize the quick and reliable connection and separation with the wire, and the flexible woven structure can smoothly pass through the wire laying trolley.

[0011] As a preferred technical means: in step 4), after the compression of the wire tension clamp, the wire is first put into the side opening of the weavable net connector, so that the weavable net connector covers the wire tension clamp and the wire within the range of 0.5-1 meters behind the tension clamp, and then the opening is sewn with the same strand of woven steel wire rope; after the weaving is completed, the connection body of the wire and the net connector is pre-tensioned by using the wire clamp and the traction machine. The starting position of the net covering the wire tension clamp is limited, and through the pre-tensioning operation, it is ensured that the net and the wire and the clamp are closely combined and uniformly stressed before the formal traction, so as to avoid slipping or loosening during the traction and ensure the safety and reliability of the traction.

[0012] As a preferred technical means: in step 5), after obtaining the on-site construction permission of the railway department at night, the traction rope on the side of railway A is thrown across the railway track and the catenary by using the rope throwing gun, then the traction rope and the wire are connected by the rotary connector in turn, and the traction rope on the traction side is connected with the traction machine in the traction field. In the night window point, the traction connection across the railway is quickly established by using the rope throwing gun, which is efficient and accurate and can maximize the use of the valuable window operation time.

[0013] As a preferred technical means: in step 6), when the guide wire is pulled, the large tensioning device is started synchronously and the wheel disc is rotated towards the device, so that the guide wire reaches the safe height of the railway on the side of the railway B and enters the normal tensioning stringing program; when the weavable net connector is about to pass through the stringing trolley, the pulling speed and the stringing tension are reduced, the tower construction personnel observe by sight and manually adjust the position of the strain clamp outside the net connector to ensure safe passing through the trolley until the pulling is in place. Through the coordinated operation of "reducing the pulling speed and the stringing tension" and "manual adjustment of the tower personnel", the "net connector + exposed strain clamp" combination is safely and smoothly passed through the stringing trolley, which effectively prevents the risk of blockage or damage to the equipment.

[0014] As a preferred technical means: in step 7), when the wire is tightened, one side of the strain tower in the strain section is hung, and the other side of the strain tower is tightened, the high-altitude hanging wire uses an alloy guide wire clamp and a tightening trolley set, and the specific operation of the tightening hanging wire is as follows: 701) Keep the current tension of the aerial guide wire, and do not release it for the time being. On the guide wire cross arm of the tower, use the clamp to lock the guide wire, and slowly release the tension of the tensioning machine. The clamp gradually anchors the guide wire. Install the tightening trolley set between the clamp and the guide wire cross arm; 702) Tighten the tightening trolley set to transfer all the tension of the guide wire to the tightening trolley set. After the pulling side of the pulling rope is completely tension-free, remove the rotating connector. After the strain clamp and the tower are connected through the fitting hanging ring, remove the net connector according to the reverse program of weaving, and loosen the tightening trolley set. At this time, the hanging wire work is completed; 703) According to the standard process of the power transmission line construction, the strain tower is tightened and the accessories are installed. At the same time, in view of the particularity of crossing the high-speed railway, the accessory installation operation is carried out during the night railway maintenance. This method provides a specific and reliable high-altitude hanging wire and accessory installation process. Through the tightening trolley set, the tension is transferred, and the final fixation of the guide wire and the installation of the accessories on the tower can be safely and efficiently completed. The key accessories are completed during the night window period, which ensures the safety of railway operation.

[0015] As a preferred technical means: four 2x40kN small traction machines are arranged in the traction field, two 2x70kN medium tension machines are arranged in the tension field, and one 90kN medium traction machine is arranged on the side of the railway B. This technical scheme adopts the combination of multiple small and medium-sized devices, which not only meets the traction force requirement, but also has more flexibility and economy than using a single super-large device, and reduces the site layout requirement.

[0016] As a preferred technical means: when the secondary guide rope is deployed, the primary guide rope and the secondary guide rope are connected by a rotating connector; when the traction rope is deployed, the secondary guide rope and the traction rope are connected by a rotating connector, and both are deployed by manpower. When deploying the primary anti-torsion wire rope, the traction rope is connected to the 90kN medium-sized traction machine on the B side of the railway, and the primary anti-torsion wire rope is connected to two 2×70kN medium-sized tension machines in the tension field, pulling towards the railway; the secondary anti-torsion wire rope is connected to the primary anti-torsion wire rope using a swivel connector, pulled towards the railway, passes through one side of the crossing tower, and is then led to the ground for anchoring.

[0017] When laying the conductors from side B of the railway to the tension field, multiple conductors are connected to two 2×70kN medium-sized tension machines at the tension field. Each conductor is connected to a "one-to-many" connecting plate via a braided mesh connector. The front of the "one-to-many" connecting plate is connected to a secondary anti-torsion steel wire rope via a rotary connector, which is pulled towards the railway, passes through one side of the crossing tower, and is then anchored to the ground. This scheme ensures a smooth transition and reasonable stress distribution between the ropes, steel wire ropes, and conductors at all levels via the rotary connectors. Furthermore, the well-designed traction direction allows the conductors to be accurately pulled to the designated position, preparing for subsequent steps. At the same time, the manual laying portion further reduces equipment costs.

[0018] Beneficial effects: 1. By introducing side openings and braidable mesh connectors with braidable stitching on the railway overhead line construction k, it is possible to wrap around the back of the crimped tension clamp, making the clamp completely exposed and thus allowing it to pass smoothly through the pulley. This makes it possible to carry out high-precision prefabricated overhead line construction on the entire tension section, fundamentally avoiding the sag error and quality risks caused by segmented construction and high-altitude operations in traditional methods.

[0019] 2. By completing key and time-consuming processes such as crimping tension clamps, weaving mesh sleeves, pre-tensioning, and sag observation on the ground during the daytime, and only traction and stringing operations are carried out during the nighttime skylight window, the high-risk operation time and difficulty during the nighttime skylight window are greatly shortened, directly reducing the low efficiency of human and machine operations and the risk of accidents during nighttime construction.

[0020] 3. The braided mesh connector itself has a simple structure and is reusable, making it a low-cost solution. It successfully replaces wire clamps that cannot pass through pulleys or traction devices that require special customization, realizing the "traction with wire clamp" function that was previously only achievable with high-cost non-standard equipment. Compared to ordinary mesh connectors that cannot install tension clamps before traction, it greatly improves the versatility of traction tools and the economy of construction solutions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the process of this invention.

[0022] Figure 2 This is a schematic diagram of the traction equipment in the traction field and tension field of the present invention.

[0023] Figure 3This is a schematic diagram of the traction process from the primary guide rope to the conductor in this invention.

[0024] Figure 4 This is a schematic diagram of the connection between the conductor and the "one-to-many" connecting plate in this invention.

[0025] Figure 5 This is a schematic diagram of the braidable mesh connector in this invention.

[0026] Figure 6 This is a schematic diagram of another view of the braided mesh connector in this invention.

[0027] Figure 7 This is a schematic diagram of the installation of the conductor on the side of the tension tower in this invention.

[0028] In the diagram: 1. Secondary anti-torsion wire rope; 2. "One-to-many" connecting plate; 3. Rotary connector; 4. Braided mesh sleeve connector; 5. Binding wire and tape; 6. Wire; 7. Traction rope; 8. Tension clamp; 9. Wire clamp; 10. Tensioning pulley block. Detailed Implementation

[0029] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figures 1-7 As shown, a method for constructing a braidable mesh connector for crossing railway lines includes the following steps: S1: Traction fields and tension fields are set up on both sides of railway A and B respectively. The traction field is equipped with 4 small traction machines of 2×40kN each, and the tension field is equipped with 2 medium tension machines of 2×70kN each. On the railway B side, there is 1 medium traction machine of 90kN each. The primary guide rope is deployed by drone. In this example, for the case of a short independent tension section, the primary guide rope is directly made of Φ6 Dyneema rope instead of small diameter rope, which can effectively improve the deployment efficiency.

[0031] S2: From both sides of the railway towards the traction and tension fields respectively, the guide ropes are tensioned and deployed using tensioning equipment. The guide ropes start with the primary guide rope, and the diameters of the subsequent secondary guide ropes and traction rope 7 gradually increase. The secondary guide ropes use Dyneema rope with a diameter of Φ10, and the traction rope 7 uses Dyneema rope with a diameter of Φ18. After the Φ18 traction rope 7, two stages of anti-torsion wire ropes with progressively increasing diameters are connected. These two stages of anti-torsion wire ropes are a primary anti-torsion wire rope of Φ20 and a secondary anti-torsion wire rope 1 of Φ25. By adopting a deployment scheme that combines Dyneema rope and anti-torsion wire rope with progressively increasing rope diameters, the high strength and lightweight advantages of Dyneema rope are fully utilized, allowing the initial rope deployment to be largely completed manually, reducing reliance on large tensioning equipment and site requirements, while ensuring sufficient strength and anti-torsion performance when finally pulling the conductor 6.

[0032] S3: The anti-twist steel wire rope is connected with the multiple conductors 6 through the "one pull many" connecting plate 2 and the weavable mesh connector 4; the "one pull many" connecting plate 2 is matched according to the number of the split conductors 6, and each phase of the split sub-conductor 6 is marked with a line sequence identifier. The conductor 6 is drawn from the tensioning machine, passes through the wire laying trolley of the crossing tower, and is then pulled to the ground on the railway B side; in this step, the weavable mesh connector 4 has a side opening, and the connection mode is as follows: the conductor 6 is put into the side opening of the mesh, and then the opening is sewn with the same strand of weaved steel wire rope in the original weaved manner. The tail is bound with iron wire and then wrapped with adhesive tape. The flexible weaved structure of this side connection mode enables the conductor 6 to smoothly pass through the wire laying trolley.

[0033] S4: After the conductor 6 is pulled to the ground on the railway B side, the weavable mesh connector 4 is first removed by operating in the reverse direction of weaving, then the compression of the strain clamp 8 of the conductor 6 is completed, and then the weavable mesh connector 4 is used to cover and fasten the strain clamp 8 and the adjacent conductor 6 segment, and a pre-tensioning operation is performed. Specifically, the conductor 6 is put into the side opening of the weavable mesh connector 4, so that the starting wrapping point of the mesh covers the strain clamp 8 and the conductor 6 within a range of 0.7 meters behind the strain clamp 8, and the opening is sewn with the same strand of weaved steel wire rope. After the weaving is completed, the conductor 6 and the connecting body of the weavable mesh connector are pre-tensioned by using the wire clamp 9 in cooperation with the pulling machine, so as to ensure the tight connection.

[0034] S5: When the on-site construction permission of the railway department is obtained at night, the Φ18 Deneema traction rope 7 on the railway A side is thrown across the railway track and the catenary using the rope throwing gun during the railway maintenance window period, and then the Φ18 Deneema traction rope 7 is connected with the prepared conductors 6 one by one through the rotary connector 3. The Φ18 Deneema traction rope 7 on the traction side is connected with the 2×40kN small traction machine in the traction site. In this step, the traction connection across the railway is quickly established using the rope throwing gun, which can maximize the use of the valuable window operation time.

[0035] S6: Start the tensioning equipment to pull the conductor 6 across the railway, and adopt the single-tensioning-machine pulling single-conductor 6 laying mode.

[0036] When the conductor 6 is pulled, the large tensioning equipment is started synchronously and the wheel disc is rotated towards the equipment direction, so that the conductor 6 reaches a safe height relative to the railway on the railway B side, and then enters the conventional tensioning stringing program. When the weavable mesh connector 4 is about to pass through the wire laying trolley, the pulling speed and the wire laying tension of the tensioning machine are reduced. The tower construction personnel manually adjust the position of the strain clamp 8 outside the mesh connector through visual observation to ensure safe passing through the trolley until the conductor 6 is pulled into place.

[0037] S7: Perform the high-altitude stringing and tightening of the conductor 6, and complete the installation of the accessories of the crossing tower.

[0038] When tightening the line, one side of the strain section is hung on the strain tower, and the other side is tightened. The high-altitude hanging line uses alloy conductor 6, wire clamp 9 and tight line trolley group 10. The specific operation steps are as follows: S701: Keep the current tension of the aerial conductor 6, and do not release it for the time being. Use the wire clamp 9 to lock the conductor 6 on the tower conductor 6 cross arm. Slowly release the tension of the tension machine, and the wire clamp 9 gradually anchors the conductor 6. Install the tight line trolley group 10 between the wire clamp 9 and the conductor 6 cross arm.

[0039] S702: Tighten the tight line trolley group 10, and transfer all the tension of the conductor 6 to the tight line trolley group 10. After the Φ18 Diniema traction rope 7 on the traction side is completely tension-free, remove the rotary connector 3. After the strain clamp 8 is connected to the tower through the hardware hanging ring, remove the weavable net connector according to the reverse procedure of weaving. Loosen the tight line trolley group 10. At this time, the hanging line work is completed.

[0040] S703: According to the standard process of power transmission line construction, tighten the strain tower and install the accessories. At the same time, according to the particularity of crossing the high-speed railway, the accessory installation operation is carried out during the night railway maintenance.

[0041] In order to ensure smooth transition between the guide ropes, steel wire ropes and conductor 6 through the rotary connector 3, reasonable stress, when laying Φ10 Diniema secondary guide rope, Φ6 Diniema primary guide rope and Φ10 Diniema secondary guide rope are connected by rotary connector 3. When laying Φ18 Diniema traction rope 7, Φ10 Diniema secondary guide rope and Φ18 Diniema traction rope 7 are connected by rotary connector 3. The laying of the two levels of guide ropes is completed by manpower.

[0042] When laying Φ20 primary anti-twist steel wire rope, Φ18 Diniema traction rope 7 is connected to 90kN medium traction machine on the railway B side, Φ20 primary anti-twist steel wire rope is connected to 2×70kN medium tension machine in the tension field, and is pulled to the railway direction; Φ25 secondary anti-twist steel wire rope 1 is connected to Φ20 primary anti-twist steel wire rope by rotary connector 3, and is pulled to the railway direction, and is led to the ground anchoring after passing through one side of the crossing tower.

[0043] When the conductor 6 on the B side of the railway is laid to the tension field, the multiple conductors 6 are connected with the two 2x70kN medium tension machines of the tension field, each conductor 6 is connected to the "one pull multiple" connection plate 2 through a weavable mesh connector, the front part of the "one pull multiple" connection plate 2 is connected with the Φ25 secondary anti-torsion steel wire rope 1 through the rotary connector 3, is pulled to the railway direction, and is led to the ground anchoring after passing through the one side span tower. The scheme ensures the smooth transition between the conductors 6, the steel wire ropes and the ropes at all levels through the rotary connector 3, the force is reasonable, and through the reasonable traction direction design, the conductor 6 can be accurately pulled to the specified position, and the subsequent steps are prepared, at the same time, the manual laying part further reduces the equipment cost.

[0044] In the example, each phase conductor 6 is pulled root by root when crossing the high-speed railway; the scheme is suitable for one independent tension section, including the tension-tension, tension-straight-tension, tension-straight-straight-tension and the like.

[0045] The method effectively realizes the purpose of completing the main processes such as the smooth passing of the tension clamp 8 through the laying trolley, the crimping and the sag observation in the daytime, and the generalization of the traction device, solves the problems of low efficiency and high risk of night construction, large cumulative error of the assembled stringing tension section, and the lack of generalization of the traditional traction device, can effectively improve the safety, efficiency and quality controllability of the stringing construction across the high-speed railway, and simplifies the construction process.

[0046] The above is the specific embodiment of the application, which has embodied the outstanding substantial characteristics and significant progress of the application, and can be modified in shape, structure and the like according to the actual use needs under the inspiration of the application, which is within the protection scope of the scheme.

Claims

1. A method for constructing a braided mesh connector for crossing railway lines, characterized in that... Includes the following steps: 1) Traction fields and tension fields are set up on both sides of railway A and B respectively, and the primary guide rope is deployed by drone; 2) From both sides of the railway towards the traction field and tension field respectively, the multi-stage guide rope is deployed by the tensioning equipment. The multi-stage guide rope includes the primary guide rope, the secondary guide rope and the traction rope. The anti-twist steel wire rope is connected after the traction rope. 3) The anti-twist steel wire rope is connected to multiple conductors through a "one-to-many" connecting plate and a braidable mesh connector. The conductors are led out from the tension machine, pass through the wire-laying pulley of the crossing tower, and are pulled to the ground on the B side of the railway. 4) After the conductor is pulled to the ground on side B of the railway, first remove the braided mesh connector, then complete the crimping of the conductor tension clamp, and then use the braided mesh connector to cover and tighten the tension clamp and adjacent conductor section, and perform pre-tensioning operation. 5) During the nighttime railway maintenance window, pull the traction rope across the railway and connect it to the prepared conductor. 6) Start the tensioning equipment to pull the conductor across the railway, using a single traction machine to pull a single conductor during deployment; 7) Perform high-altitude stringing and tightening operations on the conductors, and complete the installation of accessories for the crossing tower.

2. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: In step 1), the primary guide rope is a Dyneema rope, which is deployed using a heavy-duty drone.

3. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: In step 2), the secondary guide rope and traction rope in the direction from the traction field to railway A and from railway B to the tension field are both made of Dyneema rope, and the rope diameter of the primary guide rope, secondary guide rope and traction rope increases sequentially; in the traction conductor stage, two anti-torsion wire ropes are connected in sequence after the traction rope. These two anti-torsion wire ropes are the primary anti-torsion wire rope and the secondary anti-torsion wire rope, and their diameter increases sequentially.

4. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: In steps 3) and 4), the braidable mesh connector has a side opening. The connection method of the braidable mesh connector is as follows: after the wire is put into the side opening of the mesh, the opening is sewn together with the same strand of braided steel wire rope according to the original braiding method, and the tail is tied with iron wire and wrapped with tape.

5. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: In step 4), after the conductor tension clamp is crimped, the conductor is first inserted into the side opening of the braided mesh connector so that the starting wrapping point of the braided mesh connector covers the tension clamp and the conductor within a range of 0.5-1 meters behind it. Then, the opening is sewn together using the same strand of braided steel wire rope. After the braiding is completed, the connection between the conductor and the mesh connector is pre-tightened using a wire clamp and a traction machine.

6. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: In step 5), after obtaining on-site construction permission from the railway department at night, the traction rope on side A of the railway is thrown across the railway track and the contact wire using a rope-shooting gun. Then, the traction rope and the conductor are connected one by one through a rotary connector, and the traction rope on the traction side is connected to the traction machine at the traction site.

7. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: In step 6), when pulling the conductor, the large tensioning equipment starts synchronously and rotates the wheel in the direction of the equipment so that the conductor reaches a safe height relative to the railway on side B and then enters the conventional tension stringing procedure; when the braided mesh connector is about to pass through the stringing pulley, the traction speed and stringing tension are reduced, and the construction personnel on the tower visually observe and manually adjust the position of the tension clamp on the outside of the mesh connector to ensure safe passage through the pulley until it is pulled into place.

8. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: In step 7), during the tensioning process, the wire is hung on one side of the tension tower within the tension section, and the wire is tightened on the other side of the tension tower. Alloy conductor clamps and tensioning pulley blocks are used for hanging the wire at high altitudes. The specific operation for tightening and hanging the wire is as follows: 701) Maintain the current tension of the overhead conductor and do not loosen it. Use a wire clamp to lock the conductor onto the crossarm of the tower conductor. The tensioner slowly releases the tension, and the wire clamp gradually applies force to anchor the conductor. Install a tensioning pulley block between the wire clamp and the conductor crossarm. 702) Tighten the tensioning pulley block to transfer all the tension of the conductor to the tensioning pulley block. After the traction rope on the traction side is completely unloaded, remove the swivel connector. After the tension clamp is connected to the tower through the hardware hanging ring, remove the mesh sleeve connector in the reverse procedure of braiding and loosen the tensioning pulley block. At this time, the wire hanging work is completed. 703) The tensioning of the tower and the installation of accessories are carried out in accordance with the standard construction process of transmission lines. At the same time, in view of the special characteristics of crossing high-speed railways, the accessories are installed during the railway maintenance at night.

9. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: The traction yard is equipped with four 2×40kN small traction machines, the tension yard is equipped with two 2×70kN medium tension machines, and the railway B side is equipped with one 90kN medium traction machine.

10. The construction method for a braidable mesh connector for crossing railway lines according to claim 1, characterized in that: When deploying the secondary guide rope, the primary guide rope and the secondary guide rope are connected by a rotary connector. When deploying the traction rope, the secondary guide rope and the traction rope are connected by a rotary connector, and both are deployed manually. When deploying the primary anti-torsion wire rope, the traction rope is connected to the 90kN medium-sized traction machine on the B side of the railway, and the primary anti-torsion wire rope is connected to two 2×70kN medium-sized tension machines in the tension field, pulling towards the railway. The secondary anti-torsion wire rope is connected to the primary anti-torsion wire rope using a swivel connector, pulled towards the railway, passed through one side of the crossing tower, and then anchored to the ground. When laying the conductor from side B of the railway to the tension field, multiple conductors are connected to two 2×70kN medium-sized tension machines in the tension field. Each conductor is connected to the "one-to-many" connecting plate through a mesh connector. The front of the "one-to-many" connecting plate is connected to the secondary anti-torsion steel wire rope through a rotary connector, which is pulled towards the railway and led to the ground for anchoring after passing through one side of the crossing tower.

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