Insulating soft sling weaving process

Abstract

The invention provides a weaving process of an insulating soft sling, belongs to the technical field of insulating slings, and solves the technical problems that an existing sling is easy to twist and deform during load bearing, and internal fibers are uneven in stress. The composite structure of UHMWPE, carbon fiber and aramid fiber is adopted, high strength, high modulus and excellent insulation are achieved, the polyurethane coating and the heat conduction filler are combined, abrasion resistance and heat dissipation performance are improved, continuous rotating treatment and outer covering weaving are carried out on the sling through insulation soft sling weaving equipment, and the wear resistance and heat dissipation performance of the sling are improved. The inner layer of the sling adopts the rotating fiber bundles, the outer layer is of the spiral woven structure, continuous radial pressing force is generated on the bearing core of the inner layer, torsion and bending stress generated in the using process is effectively resisted, and twisting and structural instability of the sling are prevented, so that a bi-directional torsion-resistant balance structure is formed, the torsion resistance and bending resistance of the sling are greatly improved, and the service life of the sling is prolonged. And the internal structure of the sling is stable, and the exterior is torsion-resistant and bending-resistant.

Description

Technical Field

[0001] This invention belongs to the field of insulating sling technology, and relates to an insulating soft sling, and more particularly to an insulating soft sling weaving process. Background Technology

[0002] In high-voltage power systems such as ultra-high-voltage direct current transmission lines, live-line work has become an important means to ensure stable power supply and efficient operation and maintenance. The rigid insulating rods used in traditional live-line work to replace insulators and fittings are too long and heavy when applied to ultra-high-voltage and extra-high-voltage systems, making them extremely inconvenient to transport, store and operate, which greatly affects the efficiency of live-line work in ultra-high-voltage systems.

[0003] As an innovative tool for live-line working on ultra-high voltage lines, the insulated soft sling is made of a lightweight, high-strength soft material with excellent insulation properties. This material not only maintains stable insulation performance in high electric field environments, but also greatly improves work efficiency and safety due to its lightweight, easy-to-carry and easy-to-operate characteristics.

[0004] A search revealed Chinese patent documents, such as the patent application CN202411794617.5 (Publication No. CN119694689A), which discloses an insulating material for ultra-high voltage (UHV) electrical work insulating flexible slings, including its preparation method and application. This insulating material is prepared by mixing ZIF-8 particles and polytetrafluoroethylene (PTFE) powder at a specific mass ratio using a dry process. The resulting material is then impregnated with a polydimethylsiloxane (PDMS) solution to obtain a double-layer composite insulating material. After cutting and weaving, an insulating flexible sling is formed. This material combines the high porosity and excellent gas adsorption properties of ZIF-8 with the insulating properties of PTFE and PDMS, thus improving the overall performance of the insulating material.

[0005] Although the insulating material for the soft sling disclosed in this patent improves the insulation performance by using a composite insulating material of ZIF-8 and PTFE, there are bottlenecks in relying solely on material improvement. Furthermore, high-performance new materials are often expensive, and even if the material itself has high strength, if the weaving structure is not reasonable, the sling is still prone to deformation, internal fiber wear, or even structural loosening under long-term cyclic and torsional loads, leading to a decrease in load-bearing capacity and safety risks. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an insulating soft sling weaving process. The technical problem this invention aims to solve is: how to prevent the sling from easily twisting, deforming, and experiencing uneven stress on its internal fibers when under load.

[0007] The objective of this invention can be achieved through the following technical solutions: A process for weaving an insulating soft suspender strap includes the following steps: S1, Fiber pretreatment: Ultra-high molecular weight polyethylene (UHMWPE) fiber is selected as the base material, and carbon fiber or aramid fiber can be used as auxiliary fibers to adjust the modulus and cost. UHMWPE resin raw material is melt-extruded through a twin-screw extruder at 180-250℃ to form nascent fibers. The nascent fibers are then subjected to multi-stage hot stretching through an insulating soft suspender strap weaving device. The hot-stretched fibers are then surface-coated and modified through an impregnation unit, and subsequently dried and cured in a drying oven; S2, Fiber composite: Multiple pretreated fibers are combined according to the fiber composite ratio. The UHMWPE monofilament fibers are twisted together and gathered into a bundle of UHMWPE fibers through an insulating soft sling weaving equipment to form a strand; S3, Weaving and forming: Multiple strands of UHMWPE-based strands are woven by a rotating unit, and then the main strand is conveyed to the outer weaving and covering unit. The outer weaving and covering unit uses 8-16 strands of aramid or PU-coated UHMWPE strands with excellent toughness as radial binding yarns; S4, Post-treatment: The surface of the woven sling is coated with epoxy resin, and the epoxy resin-coated woven sling is heat-set in a hot air circulating oven; The heat setting temperature is 120-180℃.

[0008] Using the above process, ultra-high molecular weight polyethylene fiber is selected as the core load-bearing material, and carbon fiber or aramid fiber is combined with carbon fiber or aramid fiber to form nascent fiber through an existing twin-screw extruder. Through multi-stage thermal stretching, the polymer chains are highly oriented, which greatly improves the strength and modulus of the fiber.

[0009] The draw ratio in step S1 is 10-15 times; The impregnation unit in step S1 is a polyurethane coating liquid impregnation tank, and boron nitride and aluminum oxide insulating and thermally conductive fillers can be added to the coating liquid. The drying and curing temperature in step S1 is 80-120℃.

[0010] Using the above process, under the action of the polyurethane coating liquid impregnation tank, after the polyurethane forms a continuous and dense film on the fiber surface, it can effectively resist friction, scratching and repeated bending with hardware, equipment or other surfaces during use, which greatly extends the service life of the fiber body. Moreover, the boron nitride and aluminum oxide insulating and thermally conductive fillers provide a supporting skeleton for PU, which can significantly improve the glass transition temperature and heat distortion temperature of the coating, so that the sling can maintain stable performance at higher temperatures and is not easy to soften or deform, which enhances the strength and torsional effect of the woven sling. In addition, the fillers can effectively bear and disperse stress, improve the coating stiffness and tear resistance.

[0011] In step S2, the fiber composite ratio is 6-8:1-3 by mass ratio of UHMWPE fiber bundle to carbon fiber bundle or aramid fiber bundle.

[0012] Using the above process, with a mass ratio of 6:2:2, UHMWPE is used as the main body to ensure core load-bearing capacity and safe insulation. Carbon fiber is used to solve the problem of UHMWPE being soft and prone to creep, and aramid is used to make up for the deficiencies of UHMWPE and carbon fiber in shear resistance and impact resistance. This ensures the core load-bearing capacity of the sling, effectively absorbs energy, prevents brittle fracture, and guarantees torsional resistance.

[0013] In step S3, the weaving angle of the radial binding yarn is 15°-75°, and the radial binding yarn is spirally woven across the outer wall of the rotating main yarn.

[0014] By employing the above process, the radial yarn with a small angle of 15° can more effectively share the axial load and share the load with the inner vertical yarn, thereby maximizing the overall breaking strength of the sling. When weaving at a large angle of 75°, it can generate a huge clamping force on the inner core, preventing the inner and outer layers from peeling and the structure from loosening to the greatest extent. This effectively resists and recovers the torsional force caused by improper operation and prevents the sling from "twisting".

[0015] An insulating soft sling weaving process, wherein the insulating soft sling weaving equipment used in steps S, S', and S' includes multiple parallel fiber processing components and weaving components. Each fiber processing component includes a frame plate, and multiple traction rollers are rotatably connected to the inner side of the frame plate. Each traction roller is connected to the other by transmission, and one of the traction rollers is driven by a servo motor, which is fixedly installed on the outer side of the frame plate. An impregnation unit is provided below the traction roller and is fixedly installed inside the frame plate. A drying box is provided on the side of the traction roller away from the impregnation unit, and a proportional composite block is provided at the discharge end of the drying box and is fixedly installed inside the frame plate. The proportional composite block has multiple ceramic holes equidistantly arranged inside, and a fixing plate is fixedly installed at both the upper and lower ends of the proportional composite block. A bundled tube is fixedly connected inside the fixing plate, and a guide roller is provided on the side of the bundled tube away from the proportional composite block. The guide roller is rotatably connected to one end of the frame plate. The impregnation unit includes an impregnation tank, which is fixedly installed inside the frame plate. A pressure roller is rotatably connected inside the impregnation tank, and a stirring rod is fixedly installed inside the pressure roller. The outer walls at both ends of the impregnation tank are provided with grooves corresponding to the pressure rollers, and magnetic blocks are slidably connected to the inner walls of the grooves. An outer ring is fixedly installed on the outer wall of the magnetic blocks, and a synchronous pulley is fixedly installed on the outer wall of the outer ring. The other end of the synchronous pulley is connected to a traction roller. The weaving assembly includes a base plate located on one side of the guide roller. A rotating unit is provided on the surface of the base plate, and an outer weaving covering unit is connected to the outer side of the rotating unit.

[0016] Using the above structure, ultra-high molecular weight polyethylene (UHMWPE) fiber is selected as the base material, and carbon fiber or aramid fiber is selected as the auxiliary fiber to adjust the modulus and cost. The UHMWPE resin raw material is melt-extruded at 180°C using an existing twin-screw extruder (this is existing technology and will not be elaborated further). Driven by a servo motor, the formed nascent fibers are subjected to multi-stage thermal stretching via multiple traction rollers. These traction rollers are interconnected by a drive mechanism, and the stretching ratio is 10 times (this is existing traction roller drive technology and will not be elaborated further). The thermally stretched fibers are then fed into an impregnation tank via the traction rollers. The impregnation tank is a polyurethane coating liquid impregnation tank, in which boron nitride and alumina insulating and thermally conductive fillers are added. Simultaneously, the outer ring connects to the traction rollers... The transmission mechanism causes the outer ring to rotate on the outer wall of the impregnation chamber. Through the magnetic connection between the magnetic block and the pressure roller, the pressure roller drives the stirring rod inside the impregnation chamber to stir the coating liquid, ensuring uniform mixing and effective fiber impregnation. The fibers are then dried and cured in a drying chamber at a temperature of 80°C. After drying, the fibers are moved to the bundling cylinder via a proportioning composite block, causing multiple pre-treated UHMWPE monofilaments to be stranded together. Specifically, the fiber composite ratio is 6-8:1-3 by mass of UHMWPE fiber bundle to carbon fiber bundle or aramid fiber bundle. The ceramic holes inside the proportioning composite block prevent scratching and damage to the fibers, thus aggregating them into a single bundle of UHMWPE fibers. The bundle is woven through a rotating unit. The spool collects the UHMWPE strands and is driven by a drive motor. This causes the base rod to rotate via a drive gear, which in turn drives a gear disc to rotate. As the gear disc rotates and meshes with the planetary gears on the outer wall of the fixed gear disc, the spool rotates synchronously with the gear disc. This causes the multiple fiber strands to be gathered through the through-holes into the weaving holes for rotational weaving. The woven, twisted fiber main thread is guided by a guide wheel to the inside of the guide tube and collected by a collection drum. By setting an outer weaving covering unit below the guide tube, the meshing action of the first bevel gear and the second bevel gear enables the base rod to achieve stable transmission of the upright. This causes the first meshing wheel to rotate, and under the action of the first meshing belt, one of the... The drive is achieved through a two-meshing wheel arrangement. Multiple second meshing wheels are arranged in a ring, and the outer walls of these wheels are all meshed with second meshing belts. This causes each adjacent second meshing belt to rotate in opposite directions. Furthermore, two feed drums are rotatably connected to the surface of each second meshing wheel, causing adjacent second meshing wheels to rotate in opposite directions. The feed drums drive 8-16 strands of high-toughness aramid or PU-coated UHMWPE yarn to rotate and weave around the outer wall of the main rope. The woven slings are collected by a collection drum, and then the surface of the woven slings is coated with epoxy resin. The epoxy-coated woven slings are then heat-set in a hot air circulating oven at a specific temperature. This coating and setting process is existing technology and will not be described further.

[0017] The outer wall of the pressure roller is provided with a through groove, and the axis of the pressure roller coincides with the axis of the stirring rod; The two ends of the pressure roller are fixedly connected with convex rings, and the inner wall of the impregnation tank is provided with concave rings corresponding to the convex rings, and the concave rings are correspondingly set with the sliding grooves.

[0018] By adopting the above structure, the magnetic block is magnetically connected to the pressure roller through the through groove and the convex ring. This allows the pressure roller to rotate synchronously inside the impregnation tank while rotating on the outer wall of the tank, avoiding the problem of coating liquid leakage along the mechanical stirring shaft, keeping the working environment clean, and eliminating downtime maintenance caused by wear of seals. Moreover, by opening through grooves inside the pressure roller, the pressure roller does not obstruct the coating liquid inside and on both sides when the fiber is guided on the outer wall of the pressure roller, ensuring the uniformity of the coating liquid mixing.

[0019] The rotating unit includes a vertical plate, which is fixedly installed on the surface of the base plate. A fixed rod is fixedly installed on one side of the vertical plate, and a gear disk is rotatably connected to the outer end of the fixed rod. Multiple planetary gears are rotatably connected to the surface of the gear disk, and each planetary gear is meshed with a fixed gear disk. The fixed gear disk is fixedly installed on the outer wall of the fixed rod, and the multiple planetary gears are circumferentially and equidistantly meshed with the outer wall of the fixed gear disk. The outer wall of the gear disk is meshed with a drive gear, and a base rod is fixedly installed inside the drive gear. The base rod is rotatably connected to the top of the base plate. One end of the base rod is fixedly connected to the output end of the drive motor, and the drive motor is fixedly installed on the surface of the base plate. The gear disk has multiple through holes that are circumferentially opened inside, and the center of the through holes coincides with the center of the planetary gear. The through holes are opened through the inside of the planetary gear.

[0020] With the above structure, a fixed gear disc is fixedly connected to the outer wall of the fixed rod. Under the action of the ring meshing planetary gears on the outer wall of the fixed gear disc, the gear disc drives multiple planetary gears to rotate. The planetary gears rotate synchronously under the meshing action of the fixed gear disc. Moreover, by opening through holes inside the gear disc and planetary gears, the strands on the surface of the winding drum can be fed through the through holes, ensuring that multiple fibers are rotated into strands.

[0021] The surface of the gear disk is fixedly connected to multiple uprights, and each upright is rotatably connected to a winding drum, with the winding drums arranged corresponding to the planetary gears. A mounting bracket is fixedly installed on the surface of the gear disk, and a braided hole is opened through the inside of the mounting bracket, with the center of the braided hole coinciding with the center of the gear disk.

[0022] By adopting the above structure and setting up multiple uprights, when the gear disk drives the planetary gears to mesh and rotate on the outer wall of the fixed gear disk, the winding drum rotates synchronously with the gear disk. This causes multiple fiber strands to be concentrated into the braiding hole through the through hole. Furthermore, under the action of multiple planetary gears meshing on the outer wall of the fixed gear disk, the planetary gears rotate on their own axis, causing multiple strands to rotate synchronously. This twists the multiple fiber strands, ensuring the structural strength of the sling and facilitating subsequent external braiding and wrapping.

[0023] The outer braided covering unit includes a first bevel gear, which is fixedly installed on the outer wall of the base rod. The top of the first bevel gear is meshed with a second bevel gear, and a vertical rod is fixedly installed inside the second bevel gear. The vertical rod is rotatably connected to the surface of the base plate, and the top of the vertical rod is rotatably connected to a top plate. Multiple support rods are fixedly installed at the bottom of the top plate, and the support rods are fixedly installed on the surface of the base plate. The outer wall of the upright is fixedly connected to a first meshing wheel, and the outer wall of the first meshing wheel is meshed with a first meshing band, and the inner wall of the other side of the first meshing band is meshed with a second meshing wheel. The second meshing wheel is rotatably connected to the inside of the top plate, and multiple second meshing wheels are distributed in a ring at equal intervals. The outer wall of each second meshing wheel is meshed with a second meshing band, and the second meshing band is distributed in a ring.

[0024] With the above structure, the meshing action of the first bevel gear and the second bevel gear enables the base rod to achieve stable transmission of the upright rod, which in turn causes the first meshing wheel to rotate. Under the action of the first meshing belt, one of the second meshing wheels is driven. Through the annular distribution of multiple second meshing wheels, and with the second meshing belts meshing and connecting to the outer walls of the second meshing wheels, each adjacent second meshing belt rotates in opposite directions, ensuring that the second meshing belt drives the wire supply drum to braid outside the main wire after rotation processing.

[0025] A guide rope cylinder is fixedly installed inside the top plate, and the guide rope cylinder is fixedly installed on the surface of the bottom plate. A wire groove is provided below the guide rope cylinder, and a guide wheel is rotatably connected inside the guide rope cylinder. Multiple second meshing wheels are equidistantly arranged in a ring about the center of the guide rope drum, and two wire supply drums are rotatably connected to the surface of each second meshing wheel, with the wire supply drums located above the top plate; A support column is fixedly installed on the surface of the base plate, and a collection drum is rotatably connected above the support column, with the collection drum located above the guide drum.

[0026] By adopting the above structure, two wire supply drums are rotatably connected to the surface of each second meshing wheel, so that the two adjacent second meshing wheels rotate in opposite directions when rotating. This causes the wire supply drums on the surface of the second meshing wheels to rotate and weave the outer wall of the guide rope drum, thus achieving the weaving and covering of the outer wall of the main line. Moreover, by setting a collection drum above the guide rope drum, the collection drum can efficiently collect and process the woven and covered slings.

[0027] Compared with the prior art, the weaving process of the insulating soft suspender strap of the present invention has the following advantages: 1. In this invention, a composite structure of UHMWPE, carbon fiber, and aramid is adopted, which combines high strength, high modulus, and excellent insulation. Furthermore, the polyurethane coating is combined with thermally conductive fillers to improve wear resistance and heat dissipation performance. The sling is continuously rotated and woven using an insulating soft sling weaving device, so that the inner layer of the sling uses rotating fiber bundles and the outer layer has a spiral woven structure. This generates a continuous radial compression force on the inner load-bearing core, effectively resisting the torsional and bending stress generated during use, preventing the sling from twisting and structural instability. This forms a bidirectional anti-torsional balance structure, which greatly improves the torsional and bending resistance of the sling, ensuring the stability of the internal structure and the external torsional and bending resistance of the sling.

[0028] 2. In this invention, the impregnation unit allows for continuous coating of the thermally drawn fibers. Furthermore, the pressure roller, while rotating within the impregnation tank, simultaneously drives the internal stirring rod to agitate the coating liquid, ensuring effective mixing. The magnetic block allows the outer frame to rotate the pressure roller externally, preventing leakage of the coating liquid along the mechanical stirring shaft, maintaining a clean working environment, and eliminating downtime for maintenance due to seal wear.

[0029] 3. In this invention, under the action of the rotating unit, the arrangement of multiple uprights causes the gear disk to drive the planetary gears to mesh and rotate on the outer wall of the fixed gear disk. The winding drum rotates synchronously with the gear disk, causing multiple fiber strands to be concentrated into the braiding hole through the through hole. Furthermore, under the action of multiple planetary gears meshing on the outer wall of the fixed gear disk, the planetary gears rotate on their own axis, causing multiple strands to rotate synchronously. This causes the multiple fiber strands to rotate into a twist, serving as an axial load-bearing yarn, which can effectively balance internal stress, making the strand structure stable and less prone to kinking.

[0030] 4. In this invention, under the action of the outer braiding and covering unit, the base rod can realize the transmission of the upright rod. Moreover, under the transmission action of the first meshing wheel and the second meshing wheel, multiple second meshing wheels rotate synchronously. Two supply drums are rotatably connected to the surface of each second meshing wheel, so that adjacent two second meshing wheels rotate in opposite directions when rotating. This causes the second meshing wheel to drive the supply drum on the surface to rotate and braid the outer wall of the guide rope drum, realizing the braiding and covering of the outer wall of the main line. This causes the radial binding yarn to be spirally cross-woven on the outer wall of the rotating main line, generating a huge clamping force on the inner core, thereby effectively resisting and recovering the torsional force caused by improper operation, preventing the sling from "twisting", and improving the anti-torsion performance of the sling. Attached Figure Description

[0031] Figure 1 This is a flowchart of the weaving process for an insulating soft suspender strap according to the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of the insulating soft sling weaving equipment in this invention.

[0033] Figure 3 This is a schematic diagram of the fiber processing component in this invention.

[0034] Figure 4 This is a cross-sectional structural diagram of the fiber processing component in this invention.

[0035] Figure 5 This is a cross-sectional structural diagram of the impregnation unit in this invention.

[0036] Figure 6 This is a schematic diagram of the impregnation unit in this invention.

[0037] Figure 7 This is a schematic diagram of the structure of the pressure roller and the impregnation box in this invention.

[0038] Figure 8 This is an exploded structural diagram of the pressure roller and stirring rod in this invention.

[0039] Figure 9 This is a schematic cross-sectional view of the pressure roller in this invention.

[0040] Figure 10 This is a three-dimensional cross-sectional structural diagram of the impregnation unit in this invention.

[0041] Figure 11 In this invention Figure 2 A magnified structural diagram at point A.

[0042] Figure 12 This is a schematic diagram of the rotating unit in this invention.

[0043] Figure 13This is a side view of the rotating unit in this invention.

[0044] Figure 14 This is a schematic diagram of the connection structure between the gear disk and the mounting bracket in this invention.

[0045] Figure 15 This is a side view of the braiding component in this invention.

[0046] Figure 16 This is a schematic diagram of the structure of the second meshing wheel and the second meshing belt in this invention.

[0047] Figure 17 This is a schematic diagram of the structure of the second meshing wheel and the wire feeding drum in this invention.

[0048] Figure 18 This is a schematic diagram of the rope guide tube in this invention.

[0049] Figure 19 This is the performance test table for the experimental examples in this invention.

[0050] In the diagram, 1. Frame plate; 2. Traction roller; 3. Servo motor; 4. Impregnation unit; 401. Impregnation tank; 402. Pressing roller; 403. Stirring rod; 404. Slide groove; 405. Magnetic block; 406. Outer ring; 407. Synchronous pulley; 5. Drying oven; 6. Proportional composite block; 7. Ceramic hole; 8. Fixing plate; 9. Bundling cylinder; 10. Wire roller; 11. Base plate; 12. Vertical plate; 13. Fixing rod; 14. Gear disk; 15. Drive gear; 16. Base rod; 17. 18. Drive motor; 19. Fixed gear disc; 20. Planetary gear; 21. Stand; 22. Winding drum; 23. First bevel gear; 24. Second bevel gear; 25. Upright pole; 26. Top plate; 27. Support rod; 28. First meshing wheel; 29. ​​Mounting bracket; 30. Braiding hole; 31. Through hole; 32. First meshing belt; 33. Second meshing wheel; 34. Feeding drum; 35. Rope guide drum; 36. Guide wheel; 37. Support column; 38. Collection drum. Detailed Implementation

[0051] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0052] Please see Figures 1-19This invention discloses a weaving process for an insulating soft suspender strap, comprising the following steps: S1, fiber pretreatment: using ultra-high molecular weight polyethylene (UHMWPE) fiber as the base material, and auxiliary fibers such as carbon fiber or aramid fiber to adjust the modulus and cost, UHMWPE resin raw material is melt-extruded through a twin-screw extruder at 180-250°C to form nascent fibers, and the nascent fibers are subjected to multi-stage hot stretching through an insulating soft suspender strap weaving device, with a stretching ratio of 10-15 times, and then the hot-stretched fibers are surface-coated and modified through an impregnation unit 4, which is a polyurethane coating liquid impregnation tank 401, and boron nitride and alumina insulating and thermally conductive fillers can be added to the coating liquid, and then dried and cured through a drying oven 5 at a drying and curing temperature of 80-120°C; S2, fiber composite: according to the fiber composite ratio, multiple warp fibers are combined... Pre-treated UHMWPE monofilament fibers are stranded together, with a fiber composite ratio of 6-8:1-3 (UHMWPE fiber bundle to carbon fiber bundle or aramid fiber bundle by mass). These bundles are then gathered into a single UHMWPE fiber bundle and stranded using an insulating soft sling weaving machine to form a ply. S3, Weaving and Forming: Multiple ply strands, primarily composed of UHMWPE, are woven using a rotating unit. The woven main thread is then conveyed to an outer weaving and covering unit. This unit uses 8-16 strands of high-toughness aramid or PU-coated UHMWPE ply strands as radial binding yarns. The weaving angle of the radial binding yarns is 15°-75°, and the radial binding yarns are spirally woven across the outer wall of the rotating main thread. S4, Post-treatment: The surface of the woven sling is coated with epoxy resin, and the epoxy-coated woven sling is heat-set in a hot air circulating oven at 120-180℃.

[0053] An insulating soft sling weaving process, wherein the insulating soft sling weaving equipment used in steps S1, S2, and S3 includes multiple parallel fiber processing components and weaving components. The fiber processing components include a frame plate 1, and multiple traction rollers 2 are rotatably connected to the inner side of the frame plate 1. Each traction roller 2 is connected to the others via a transmission mechanism, and one of the traction rollers 2 is driven by a servo motor 3, which is fixedly installed on the outer side of the frame plate 1. An impregnation unit 4 is located below the traction roller 2 and is fixedly installed inside the frame plate 1. A drying chamber 5 is located on the side of the traction roller 2 away from the impregnation unit 4. The discharge end of 5 is provided with a proportional composite block 6, and the proportional composite block 6 is fixedly installed inside the frame plate 1. Multiple ceramic holes 7 are equally spaced inside the proportional composite block 6. The ceramic holes 7 are made of wear-resistant ceramic, which can accurately guide multiple UHMWPE strands to keep them parallel and perpendicular. Fixed plates 8 are fixedly installed at the upper and lower ends of the proportional composite block 6. Bundling cylinders 9 are fixedly connected inside the fixed plates 8, so that the fibers form a tight fiber bundle after passing through the bundling cylinders 9, ensuring that all load-bearing fibers in the inner layer are evenly stressed. A guide roller 10 is provided on the side of the bundling cylinder 9 away from the proportional composite block 6. The guide roller 10 is rotatably connected to one end of the frame plate 1. The impregnation unit 4 includes an impregnation tank 401, which is fixedly installed inside the frame plate 1. A pressing roller 402 is rotatably connected inside the impregnation tank 401, and a stirring rod 403 is fixedly installed inside the pressing roller 402. Sliding grooves 404 are formed on the outer walls of both ends of the impregnation tank 401 corresponding to the pressing roller 402. Magnetic blocks 405 are slidably connected to the inner walls of the sliding grooves 404. An outer ring 406 is fixedly installed on the outer wall of the magnetic blocks 405, and a synchronous pulley 407 is fixedly installed on the outer wall of the outer ring 406. A traction roller 2 is drivenly connected to the other end of the synchronous pulley 407. A through groove is formed on the outer wall of the pressing roller 402, and the axis of the pressing roller 402 coincides with the axis of the stirring rod 403. The two ends of the pressing roller 402 are fixedly connected... A convex ring is fixedly connected to the impregnation tank 401, and a concave ring is correspondingly provided on the inner wall of the impregnation tank 401 about the convex ring. The concave ring is also correspondingly provided with the sliding groove 404. Under the action of the through groove and the convex ring, the magnetic block 405 is magnetically connected to the pressure roller 402. When the pressure roller 402 rotates on the outer wall of the impregnation tank 401, the pressure roller 402 rotates synchronously inside the impregnation tank 401. This avoids the problem of coating liquid leakage along the mechanical stirring shaft, keeps the working environment clean, and eliminates downtime maintenance caused by wear of the seals. Moreover, by opening a through groove inside the pressure roller 402, when the fiber is guided on the outer wall of the pressure roller 402, the pressure roller 402 does not obstruct the coating liquid inside and on both sides, ensuring the uniformity of the coating liquid mixing. Furthermore, the weaving assembly includes a base plate 11, which is located on one side of the guide roller 10. A rotating unit is provided on the surface of the base plate 11, and an outer weaving covering unit is drivenly connected to the outer side of the rotating unit. The rotating unit includes a vertical plate 12, which is fixedly installed on the surface of the base plate 11. A fixing rod 13 is fixedly installed on one side of the vertical plate 12, and a gear disk 14 is rotatably connected to the outer end of the fixing rod 13. A plurality of planetary gears 19 are rotatably connected to the surface of the gear disk 14, and each planetary gear 19 is meshed with a fixed gear disk 18. The fixed gear disk 18 is fixedly installed on the fixing rod 10. The outer wall of the fixed gear 18 is connected to the fixed gear 18 by multiple planetary gears 19 in an annular equidistant meshing. The fixed gear 18 is fixedly connected to the outer wall of the fixed rod 13. Under the action of the planetary gears 19 meshing in an annular manner on the outer wall of the fixed gear 18, the gear disk 14 drives multiple planetary gears 19 to rotate. The planetary gears 19 rotate synchronously under the meshing action of the fixed gear disk 18. Moreover, by opening a through hole 30 inside the gear disk 14 and the planetary gears 19, the strands on the surface of the winding drum 21 are fed through the through hole 30, ensuring that multiple fibers are rotated into strands. The outer wall of the gear disk 14 is meshed with a drive gear 15, and a base rod 16 is fixedly installed inside the drive gear 15. The base rod 16 is rotatably connected to the top of the base plate 11. One end of the base rod 16 is fixedly connected to the output end of the drive motor 17. The drive motor 17 is fixedly installed on the surface of the base plate 11. The gear disk 14 has a plurality of through holes 30 that are circumferentially opened inside. The center of the through holes 30 coincides with the center of the planetary gear 19. The through holes 30 are opened through the interior of the planetary gear 19.

[0054] Multiple uprights 20 are fixedly connected to the surface of the gear disk 14, and each upright 20 is rotatably connected to a winding drum 21. The winding drum 21 is arranged correspondingly to the planetary gear 19. A mounting bracket 28 is fixedly installed on the surface of the gear disk 14, and a braiding hole 29 is opened through the inside of the mounting bracket 28. The center of the braiding hole 29 coincides with the center of the gear disk 14. With the arrangement of multiple uprights 20, when the gear disk 14 drives the planetary gear 19 to mesh and rotate on the outer wall of the fixed gear disk 18, the winding drum 21 rotates synchronously with the gear disk 14. This causes multiple fiber strands to be concentrated into the braiding hole 29 through the through hole 30. Under the action of multiple planetary gears 19 meshing on the outer wall of the fixed gear disk 18, the planetary gears 19 rotate on their own axis, causing multiple strands to rotate synchronously. This twists the multiple fiber strands, ensuring the structural strength of the sling and facilitating subsequent external braiding and wrapping.

[0055] The outer covering unit includes a first bevel gear 22, which is fixedly installed on the outer wall of the base rod 16. A second bevel gear 23 is meshed with the top of the first bevel gear 22, and a vertical rod 24 is fixedly installed inside the second bevel gear 23. The vertical rod 24 is rotatably connected to the surface of the base plate 11, and a top plate 25 is rotatably connected to the top of the vertical rod 24. Multiple support rods 26 are fixedly installed at the bottom of the top plate 25, and the support rods 26 are fixedly installed on the surface of the base plate 11. A first meshing wheel 27 is fixedly connected to the outer wall of the vertical rod 24, and a first meshing band 31 is meshed with the outer wall of the first meshing wheel 27. On the other side of the inner wall of 31, a second meshing wheel 32 is engaged. Under the meshing action of the first bevel gear 22 and the second bevel gear 23, the bottom rod 16 can achieve stable transmission of the upright rod 24, which causes the first meshing wheel 27 to rotate. Under the action of the first meshing belt 31, one of the second meshing wheels 32 is driven. Through the annular distribution of multiple second meshing wheels 32, under the action of the second meshing belt 33 engaged with the outer wall of the second meshing wheel 32, each adjacent second meshing belt 33 rotates in opposite directions, ensuring that the second meshing belt 33 drives the wire supply drum 34 to braid outside the main wire after rotation.

[0056] The second meshing wheel 32 is rotatably connected to the inside of the top plate 25, and multiple second meshing wheels 32 are equidistantly distributed in a ring. Each second meshing wheel 32 has a second meshing band 33 meshing with its outer wall, and the second meshing bands 33 are distributed in a ring. Multiple second meshing wheels 32 are equidistantly arranged in a ring about the center of the guide tube 35, and two wire supply tubes 34 are rotatably connected to the surface of each second meshing wheel 32. The wire supply tubes 34 are located above the top plate 25. The guide tube 35 is fixedly installed inside the top plate 25 and is also fixedly installed on the surface of the bottom plate 11. A wire passage groove is provided below the guide tube 35, and the inside of the guide tube 35 is rotatably connected to... There is a guide wheel 36, and a support column 37 is fixedly installed on the surface of the base plate 11. A collection drum 38 is rotatably connected above the support column 37 and is located above the guide rope drum 35. By rotatably connecting two supply drums 34 to the surface of each second meshing wheel 32, the two adjacent second meshing wheels 32 rotate in opposite directions when rotating, so that the second meshing wheel 32 drives the supply drum 34 on the surface to rotate and weave the outer wall of the guide rope drum 35, realizing the weaving and covering of the outer wall of the main line. Moreover, by setting the collection drum 38 above the guide rope drum 35, the collection drum 38 can efficiently collect and process the woven and covered sling.

[0057] The working principle of this invention is as follows: During weaving, ultra-high molecular weight polyethylene (UHMWPE) fiber is selected as the base material, and carbon fiber or aramid fiber is selected as the auxiliary fiber to adjust the modulus and cost. The UHMWPE resin raw material is melt-extruded at 180°C using an existing twin-screw extruder (this is prior art and will not be described in detail). Driven by a servo motor 3, the formed nascent fiber is subjected to multi-stage thermal stretching through multiple traction rollers 2. The multiple traction rollers 2 are connected by a drive, and the stretching ratio is 10 times (this is existing traction roller 2 drive technology and will not be described in detail). The thermally stretched fiber is then fed into an impregnation tank 401 through the traction rollers 2. The impregnation tank 401 is a polyurethane coating liquid impregnation tank 401, in which nitrogen is added. Boron oxide and alumina are used as insulating and thermally conductive fillers. Simultaneously, through the transmission between the outer ring 406 and the traction roller 2, the outer ring 406 rotates on the outer wall of the impregnation tank 401. The magnetic connection between the magnetic block 405 and the pressure roller 402 causes the pressure roller 402 to drive the stirring rod 403 inside the impregnation tank 401 to stir, facilitating uniform mixing of the internal coating liquid and ensuring the fiber impregnation effect. Subsequently, the fibers are dried and cured in the drying chamber 5 at the existing drying and curing temperature of 80℃. After drying, the fibers are moved to the bundling cylinder 9 via the proportioning composite block 6, causing multiple pretreated UHMWPE monofilament fibers to be stranded together. Specifically, the fiber composite ratio is UHMWPE fiber bundles with carbon fiber bundles or aramid fibers. The fiber bundle mass ratio is 6-8:1-3, and the ceramic holes 7 inside the proportional composite block 6 prevent scratching and damage to the fibers. The bundle of UHMWPE fibers is gathered and woven by the rotating unit. The winding drum 21 collects the UHMWPE strands and drives the base rod 16 to rotate the gear disk 14 through the drive gear 15. When the gear disk 14 drives the planetary gear 19 to mesh and rotate on the outer wall of the fixed gear disk 18, the winding drum 21 rotates synchronously with the gear disk 14. This causes the multiple fiber strands to be concentrated through the through hole 30 into the weaving hole 29 for rotational weaving. The woven fiber main thread is guided by the guide wheel 36 to the inside of the guide drum 35. The wires are collected by the collecting drum 38. An outer braiding unit is installed below the guide rope drum 35. Under the meshing action of the first bevel gear 22 and the second bevel gear 23, the base rod 16 can achieve stable transmission of the upright rod 24, causing the first meshing wheel 27 to rotate. Under the action of the first meshing belt 31, one of the second meshing wheels 32 is driven. Through the annular distribution of multiple second meshing wheels 32, and with the second meshing belts 33 meshing and connecting to the outer walls of the second meshing wheels 32, each adjacent second meshing belt 33 rotates in opposite directions. Furthermore, by rotatably connecting two supply drums 34 to the surface of each second meshing wheel 32, adjacent second meshing wheels 32 rotate in opposite directions during rotation.The feed drum 34 drives 8-16 strands of high-toughness aramid or PU-coated UHMWPE yarn to rotate and weave against the outer wall of the main rope. The woven sling is collected by the collection drum 38, and then the surface of the woven sling is coated with epoxy resin. The epoxy-coated woven sling is then heat-set in a hot air circulating oven at 120°C. This coating and setting process is existing technology and will not be described in detail. This completes the weaving process of the insulating soft sling.

[0058] To test the performance of this insulated soft sling weaving process, slings made using this process and the same pure UHMWPE fibers, prepared using a conventional twisting and weaving process, will be tested for product performance. Raw materials: All experimental examples and comparative examples used the same batch of magnesite powder, whose main chemical components were: MgCO3 95.2%, CaO 1.5%, SiO2 1.0%, Fe2O3 0.8%, and loss on ignition 41.5%.

[0059] Experimental Example 1 S1. Fiber Pretreatment: Ultra-high molecular weight polyethylene (UHMWPE) fiber is selected as the base material. Auxiliary fibers can be carbon fiber or aramid fiber to adjust the modulus and cost. UHMWPE resin raw material is melt-extruded at 180°C using a twin-screw extruder to form nascent fibers. These nascent fibers are then subjected to multi-stage hot stretching using an insulating soft sling weaving machine, with a stretch ratio of 10 times. The hot-stretched fibers are then surface-coated in impregnation unit 4 (a polyurethane coating liquid impregnation tank 401), and boron nitride and alumina insulating and thermally conductive fillers can be added to the coating liquid. Subsequently, the fibers are dried and cured in a drying oven 5 at 80°C. S2. Fiber Composite: Multiple pretreated UHMWPE monofilament fibers are stranded together according to the fiber composite ratio. The ratio of UHMWPE fiber bundles to carbon fiber bundles or aramid fiber bundles is 6-8:1-3. These bundles are gathered into a single UHMWPE fiber bundle using an insulating soft sling weaving device and then twisted to form strands. S3, Weaving and Forming: Multiple strands of UHMWPE-based strands are woven using a rotating unit. The woven main strand is then conveyed to an outer weaving and covering unit. This unit uses 12 strands of high-toughness aramid or PU-coated UHMWPE strands as radial binding yarns. The weaving angle of the radial binding yarns is 15°, and they are spirally woven across the outer wall of the rotating main strands. S4, Post-treatment: The surface of the woven sling is coated with epoxy resin, and the epoxy-coated woven sling is heat-set in a hot air circulating oven at 150℃.

[0060] Experiment Example 2 The difference between this experimental example and Experimental Example 1 is that the radial binding yarn weaving angle is 45°.

[0061] Experimental Example 3 The difference between this experimental example and Experimental Example 1 is that the radial binding yarn weaving angle is 75°.

[0062] Experiment Example 4 Fiber treatment: Ultra-high molecular weight polyethylene fiber is selected as the base material. UHMWPE resin raw material is melt-extruded at 180°C through a twin-screw extruder to form nascent fibers; Fiber twisting: Multiple pretreated UHMWPE monofilament fibers are twisted together and the UHMWPE fiber bundles are twisted together using existing twisting equipment to form strands; Braiding: Multiple strands of pure UHMWPE yarn are twisted and braided using an existing braiding machine.

[0063] To test product performance, key parameters of the woven suspenders were tested. The test results are as follows: Figure 19 ; Breaking strength and elongation at break: Tested using a universal testing machine in accordance with standard GB / T 8834; Insulation strength: Tested using a withstand voltage tester in accordance with standard GB / T 3048.8; Anti-kink performance: Custom test, one end of a 1-meter long sling is fixed, and a torque of 5 Nm is applied to the other end. The angle of torsional deformation is recorded, and the recovery after the torque is removed is observed. Abrasion resistance: Refer to standard GB / T 9867, use a rotary drum abrasion tester, and record the number of friction cycles when the sample breaks; Cyclic bending fatigue life: The number of cycles until the sling breaks is tested on a dedicated fatigue testing machine in accordance with standard ISO 2307.

[0064] The experiments above show that Example 1 exhibits the highest breaking strength and the lowest breaking elongation, proving that a small braiding angle is beneficial to axial strength. Compared with Example 3, Examples 1 and 2 differ only in the braiding angle of the radial binding yarn, indicating that by adjusting the braiding angle of the radial binding yarn, the final performance of the sling can be customized to meet the specific needs of different application scenarios, thus realizing the designability of the product. Compared with Example 4, Examples 1, 2, and 3 comprehensively surpass traditional braided slings in key performance indicators, especially in terms of strength, wear resistance, fatigue resistance, and kinking resistance, demonstrating that they possess higher safety and longer service life in harsh environments such as ultra-high voltage live-line work.

[0065] In summary, this invention employs a composite structure of UHMWPE, carbon fiber, and aramid fiber, which combines high strength, high modulus, and excellent insulation. Furthermore, the combination of a polyurethane coating and thermally conductive filler enhances wear resistance and heat dissipation. The continuous rotation and outer weaving of the sling using an insulating soft sling weaving machine results in a rotating fiber bundle inner layer and a spiral woven outer layer, generating continuous radial compression force on the inner load-bearing core. This effectively resists torsional and bending stresses generated during use, preventing the sling from twisting and becoming structurally unstable. This forms a bidirectional anti-torsional balanced structure, significantly improving the sling's torsional and bending resistance, ensuring internal structural stability and external torsional and bending resistance. This solves the technical problems of existing slings being prone to twisting and deformation under load, and exhibiting uneven stress on internal fibers.

[0066] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An insulated soft sling braiding process characterized by, Includes the following steps: S1. Fiber pretreatment: Ultra-high molecular weight polyethylene fiber is selected as the base material. Carbon fiber or aramid fiber can be used as auxiliary fibers to adjust the modulus and cost. UHMWPE resin raw material is melt-extruded at 180-250℃ through a twin-screw extruder to form nascent fibers. The nascent fibers are then subjected to multi-stage hot stretching through an insulating soft sling weaving equipment. The hot-stretched fibers are then surface-coated through an impregnation unit (4) and subsequently dried and cured through a drying oven (5). S2. Fiber composite: Multiple pretreated UHMWPE monofilament fibers are stranded together according to the fiber composite ratio and gathered into a bundle of UHMWPE fiber bundles through an insulating soft sling weaving equipment to form strands. S3. Weaving and forming: Multiple strands of UHMWPE-based strands are rotated and woven through a rotating unit. The main strand of the weaving is then transported to the outer weaving and covering unit. The outer weaving and covering unit uses 8-16 strands of aramid or PU-coated UHMWPE strands with excellent toughness as radial binding yarns. S4. Post-processing: The surface of the woven suspenders is coated with epoxy resin, and the epoxy resin-coated woven suspenders are heat-set in a hot air circulating oven. The heat setting temperature is 120-180℃.

2. An insulated soft sling braiding process as claimed in claim 1, wherein, The draw ratio in step S1 is 10-15 times; The impregnation unit (4) in step S1 is a polyurethane coating liquid impregnation tank (401), and boron nitride and aluminum oxide insulating and thermally conductive fillers can be added to the coating liquid. The drying and curing temperature in step S1 is 80-120℃.

3. The process of claim 1, wherein, In step S2, the fiber composite ratio is 6-8:1-3 by mass ratio of UHMWPE fiber bundle to carbon fiber bundle or aramid fiber bundle.

4. The process of claim 1, wherein, In step S3, the weaving angle of the radial binding yarn is 15°-75°, and the radial binding yarn is spirally woven across the outer wall of the rotating main yarn.

5. The weaving process for an insulating soft suspender strap according to any one of claims 1-4, characterized in that, The insulating soft sling weaving equipment used in steps S1, S2 and S3 includes multiple parallel fiber processing components and weaving components. The fiber processing components include a frame plate (1), and multiple traction rollers (2) are rotatably connected to the inner side of the frame plate (1). Each traction roller (2) is connected to the other by transmission, and one of the traction rollers (2) is driven by a servo motor (3). The servo motor (3) is fixedly installed on the outer side of the frame plate (1). An impregnation unit (4) is provided below the traction roller (2), and the impregnation unit (4) is fixedly installed inside the frame plate (1). A drying box (5) is provided on the side of the traction roller (2) away from the impregnation unit (4), and a proportional composite block (6) is provided at the discharge end of the drying box (5), and the proportional composite block (6) is fixedly installed inside the frame plate (1). The proportional composite block (6) has multiple ceramic holes (7) equidistantly opened inside, and fixed plates (8) are fixedly installed at both the upper and lower ends of the proportional composite block (6). A bundled tube (9) is fixedly connected inside the fixed plate (8), and a wire roller (10) is provided on the side of the bundled tube (9) away from the proportional composite block (6). The wire roller (10) is rotatably connected to one end of the frame plate (1). The impregnation unit (4) includes an impregnation tank (401), which is fixedly installed inside the frame plate (1). A pressure roller (402) is rotatably connected inside the impregnation tank (401), and a stirring rod (403) is fixedly installed inside the pressure roller (402). The two outer walls of the impregnation tank (401) are provided with grooves (404) corresponding to the pressure roller (402), and the inner wall of the groove (404) is slidably connected with a magnetic block (405). The outer wall of the magnetic block (405) is fixedly installed with an outer ring (406), and the outer wall of the outer ring (406) is fixedly installed with a synchronous pulley (407). The other end of the synchronous pulley (407) is connected to a traction roller (2). The weaving assembly includes a base plate (11), which is located on one side of the guide roller (10). A rotating unit is provided on the surface of the base plate (11), and an outer weaving covering unit is connected to the outside of the rotating unit.

6. The weaving process for an insulating soft suspender strap according to claim 5, characterized in that, The outer wall of the pressure roller (402) is provided with a through groove, and the axis of the pressure roller (402) coincides with the axis of the stirring rod (403); The two ends of the pressure roller (402) are fixedly connected with convex rings, and the inner wall of the immersion tank (401) is provided with concave rings corresponding to the convex rings, and the concave rings are provided with corresponding grooves (404).

7. The weaving process for an insulating soft suspender strap according to claim 5, characterized in that, The rotating unit includes a vertical plate (12), which is fixedly installed on the surface of the base plate (11). A fixed rod (13) is fixedly installed on one side of the vertical plate (12), and a gear disk (14) is rotatably connected to the outer end of the fixed rod (13). Multiple planetary gears (19) are rotatably connected to the surface of the gear disk (14). Each planetary gear (19) is meshed with a fixed gear disk (18). The fixed gear disk (18) is fixedly installed on the outer wall of the fixed rod (13), and multiple planetary gears (19) are circumferentially meshed with the outer wall of the fixed gear disk (18). The outer wall of the gear disk (14) is meshed with a drive gear (15), and a base rod (16) is fixedly installed inside the drive gear (15). The base rod (16) is rotatably connected above the base plate (11). One end of the base rod (16) is fixedly connected to the output end of the drive motor (17), and the drive motor (17) is fixedly installed on the surface of the base plate (11). The gear disk (14) has a plurality of through holes (30) that are circumferentially opened inside, and the center of the through holes (30) coincides with the center of the planetary gear (19), and the through holes (30) are opened through the interior of the planetary gear (19).

8. The weaving process for an insulating soft suspender strap according to claim 7, characterized in that, The surface of the gear disk (14) is fixedly connected to multiple supports (20), and each support (20) is rotatably connected to a winding drum (21), and the winding drum (21) is arranged correspondingly to the planetary gear (19); A mounting bracket (28) is fixedly installed on the surface of the gear disk (14), and a braided hole (29) is opened through the inside of the mounting bracket (28), and the center of the braided hole (29) coincides with the center of the gear disk (14).

9. The weaving process for an insulating soft suspender strap according to claim 5, characterized in that, The outer covering unit includes a first bevel gear (22), and the first bevel gear (22) is fixedly installed on the outer wall of the base rod (16). The top of the first bevel gear (22) is meshed with a second bevel gear (23), and a vertical rod (24) is fixedly installed inside the second bevel gear (23). The vertical rod (24) is rotatably connected to the surface of the base plate (11), and the top of the vertical rod (24) is rotatably connected to a top plate (25). A plurality of support rods (26) are fixedly installed at the bottom of the top plate (25), and the support rods (26) are fixedly installed on the surface of the base plate (11). The outer wall of the upright (24) is fixedly connected to a first meshing wheel (27), and the outer wall of the first meshing wheel (27) is meshed with a first meshing band (31), and the inner wall of the other side of the first meshing band (31) is meshed with a second meshing wheel (32). The second meshing wheel (32) is rotatably connected to the inside of the top plate (25), and multiple second meshing wheels (32) are distributed in a ring at equal intervals. The outer wall of each second meshing wheel (32) is meshed with a second meshing band (33), and the second meshing band (33) is distributed in a ring.

10. The weaving process for an insulating soft suspender strap according to claim 9, characterized in that, The top plate (25) is fixedly installed with a guide tube (35), and the guide tube (35) is fixedly installed on the surface of the bottom plate (11). A wire groove is provided below the guide tube (35), and a guide wheel (36) is rotatably connected inside the guide tube (35). Multiple second meshing wheels (32) are equidistantly arranged in a ring about the center of the guide tube (35), and each second meshing wheel (32) is rotatably connected to two wire supply tubes (34), and the wire supply tubes (34) are located above the top plate (25); A support column (37) is fixedly installed on the surface of the base plate (11), and a collection drum (38) is rotatably connected above the support column (37), and the collection drum (38) is located above the guide rope drum (35).

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