A cable traction anti-twist device for communication pipeline construction and a method for using the same

Abstract

The application relates to a cable traction anti-twist device for communication pipeline construction and a use method thereof, and belongs to the technical field of communication pipeline construction, which comprises a supporting part, a cable bearing part and a reset anti-twist part, the cable bearing part and the reset anti-twist part are arranged on the supporting part respectively, the cable bearing part is arranged below the supporting part, a first limiting ring of the cable bearing part is used for guiding and centering the cable, the first rotating component and the second rotating component of the reset anti-twist part are rotatably connected to the supporting part, and a spring is arranged between the first rotating component and the second rotating component, the two ends of the spring are fixedly connected with the two rotating components respectively, the deflection of the cable bearing part drives the first rotating component and the second rotating component to relatively rotate, and then the spring is compressed or stretched, and the flexible reset force generated by the spring makes the device adapt to the swing of the cable, and the problems that the cable deviates from the central axis of the pipeline, the frictional resistance is increased and the anti-twist effect is poor caused by the gravity of the traditional anti-twist device are solved.

Description

Technical Field

[0001] This invention belongs to the field of communication pipeline construction technology, specifically relating to a cable traction and anti-torsion device for communication pipeline construction and its usage method. Background Technology

[0002] In the field of communication pipeline construction, especially in cable pulling operations involving vertical shafts, pipelines with large inclination angles, or long and complex paths, preventing cable kinking is crucial. Existing technologies mostly use anti-torsion devices such as universal joints or bearing-type rotators. The core of their design is to release the rotational stress of the cable around its own axis. These passive devices are effective when the cable is only subjected to pure torsional force and are the basic means of preventing torsion in current construction.

[0003] However, when constructing non-horizontal pipelines, existing anti-torsion devices reveal their inherent limitations. First, in vertical or inclined pipelines, the gravity of the device itself and the cable is significant. Traditional anti-torsion devices lack self-stabilizing structures, and their moving parts are prone to natural drooping or deflection under gravity, thus forcing the cable to deviate from the pipeline's central axis from the initial state. This not only instantly increases the frictional resistance with the pipe wall but also creates a hidden danger for swaying during the traction process. Second, and more seriously, when traction is carried out in long-distance complex pipelines, the cable often encounters unpredictable sudden lateral jamming or impact tension. At this time, the rotating or hinged parts of traditional anti-torsion devices are very likely to reach their mechanical stroke limit instantly, generating violent rigid collisions. This can cause internal mechanisms such as springs to overload and be damaged, or cause the entire device to mechanically lock up. Such failure not only fails to protect the cable but also instantly transforms itself from a functional component into a failure point, seriously threatening construction safety and efficiency. Therefore, a cable traction anti-torsion device for communication pipeline construction and its usage method are proposed. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention provides a cable traction anti-torsion device for communication pipeline construction and its usage method. It solves the problem that when traction cables in non-horizontal pipelines and long-distance complex paths, traditional anti-torsion devices cause the cable to deviate from the pipeline's central axis due to gravity, increasing frictional resistance. Furthermore, when encountering sudden lateral jamming or impact pulling force, the device is prone to reaching its mechanical travel limit, resulting in rigid collisions, spring overload damage, or mechanical lock-up, thus failing to effectively prevent torsion.

[0005] The objective of this invention can be achieved through the following technical solutions: A cable traction anti-torsion device for communication pipeline construction includes a support part, a cable carrying part, and a reset anti-torsion part. The cable carrying part and the reset anti-torsion part are respectively disposed on the support part. The reset anti-torsion part includes a first rotating component, a second rotating component, and a spring. The first rotating component and the second rotating component are rotatably connected to the support part. The spring is disposed between the first rotating component and the second rotating component, and both ends of the spring are fixedly connected to the first rotating component and the second rotating component, respectively. The cable carrying part is disposed between the first rotating component and the second rotating component, and both sides of the cable carrying part are respectively in contact with the first rotating component and the second rotating component. The cable carrying part includes a first limiting ring for cable passage. The first limiting ring is located below the support part. The cable carrying part keeps the cable centered and guided. The spring cooperates with the first rotating component and the second rotating component to provide a flexible reset force, enabling the device to adapt to cable swing and resist impact, preventing cable twisting and mechanical locking.

[0006] As a further embodiment of the present invention, the support part includes a support shaft and a bracket, the support shaft is disposed on the bracket, and the cable bearing part and the reset anti-torsion part are both disposed on the support shaft.

[0007] As a further embodiment of the present invention, the cable bearing part further includes a second limiting ring and a guide rod. The first rotating component, the second rotating component, and the second limiting ring are all rotatably sleeved on the support shaft. The first limiting ring and the guide rod are respectively disposed on both sides of the second limiting ring.

[0008] As a further embodiment of the present invention, the guide rod includes a cylindrical rod and a frustum rod. The cylindrical rod is mounted on the second limiting ring via a support block, and the frustum rod is mounted on the cylindrical rod. The cross-sectional radius of the frustum rod gradually increases from the end closest to the cylindrical rod to the end furthest from the cylindrical rod.

[0009] As a further embodiment of the present invention, both the first rotating assembly and the second rotating assembly include a rotating ring, a U-shaped support frame, a bearing block, and a limiting block. The rotating ring is rotatably sleeved on the support shaft. One end of one of the crossbars of the U-shaped support frame is vertically disposed on the rotating ring. The limiting block is disposed on the end of the other crossbar of the U-shaped support frame. The bearing block is disposed on one side of the outer wall of the vertical bar of the U-shaped support frame. The spring is disposed between the two bearing blocks, and both ends of the spring are respectively connected to the two bearing blocks.

[0010] As a further embodiment of the present invention, the two sides of the support block are respectively attached to two limiting blocks.

[0011] As a further embodiment of the present invention, friction blocks are provided on the end faces of the two limiting blocks that are in contact with the support blocks, and first serrated rings are provided on both sides of the support blocks, and second serrated rings that mesh with the first serrated rings are provided on the friction blocks.

[0012] As a further embodiment of the present invention, the length of the cylindrical rod is twice the length of the frustum rod.

[0013] As a further embodiment of the present invention, the first limiting ring is an openable and closable structure.

[0014] A method for using a cable pulling and anti-torsion device for communication pipeline construction includes the following steps: S1: Determine the traction path, and install the first cable traction anti-twist device and the second cable traction anti-twist device at the traction start point and traction end point of the predetermined pipeline, respectively, with a set distance L between them; S2: Pass the end of the communication cable to be pulled through the first cable pulling anti-twist device and the first limiting ring of the second cable pulling anti-twist device in sequence. S3: Install a third cable traction anti-twist device at the midpoint between the first cable traction anti-twist device and the second cable traction anti-twist device, and pass the cable through the first limiting ring of the third cable traction anti-twist device. S4: Using the second cable traction anti-torsion device as a reference, install the fourth cable traction anti-torsion device at a distance L along the traction direction, so that the second and fourth cable traction anti-torsion devices are spaced apart by a distance L, and pass the cable through the first limiting ring of the fourth cable traction anti-torsion device. S5: Install the fifth cable traction anti-torsion device at the midpoint between the second and fourth cable traction anti-torsion devices, and pass the cable through the first limiting ring of the fifth cable traction anti-torsion device. S6: Repeat the deployment method of S4 and S5, using the newly installed device as a reference, continue to install new devices at a distance L, and install additional devices at the midpoint between adjacent devices, until the entire traction path is covered. S7: Cable traction is carried out using traction equipment. The cable traction anti-torsion device uses the spring of the reset anti-torsion part to cooperate with the rotating component to adapt to the cable swing and provide a flexible reset force to prevent cable twisting and mechanical locking.

[0015] The beneficial effects of this invention are as follows: This invention addresses the issue of cable bearing units positioned below support units. A first limiting ring guides the cable as it passes through, preventing deviation of the pipe's centerline due to gravity or installation errors. This directly reduces traction friction. The reset and anti-torsion unit has a first and second rotating assembly rotatably connected to the support unit, with a spring between them. The spring's ends are fixedly connected to the two rotating assemblies. This structure allows the cable bearing unit to deflect when subjected to lateral impact or jamming, driving the first and second rotating assemblies to rotate relative to each other, compressing or stretching the spring. The resulting flexible reset force absorbs and buffers impact energy, allowing the device to adapt to the cable's swing and restore the cable bearing unit to its centered position. This flexible reset mechanism fundamentally solves the problems of traditional anti-torsion devices in non-horizontal pipes and long, complex paths where gravity causes the cable to deviate from the pipe's centerline, increasing friction. Furthermore, in the event of sudden lateral jamming or impact, the device easily reaches its mechanical travel limit, resulting in rigid collisions, spring overload damage, or mechanical lock-up, thus failing to effectively prevent torsion. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support structure of the present invention; Figure 3 This is a schematic diagram of the cable carrier structure of the present invention; Figure 4 This is a schematic diagram of the resetting and anti-torsion part structure of the present invention.

[0018] Explanation of key component symbols: In the diagram: 1. Support part; 11. Support shaft; 12. Bracket; 2. Cable bearing part; 21. First limiting ring; 22. Second limiting ring; 23. Guide rod; 231. Cylindrical rod; 232. Frustum rod; 3. Reset anti-torsion part; 31. First rotating assembly; 32. Second rotating assembly; 33. Spring; 4. Rotating ring; 5. U-shaped support frame; 6. Bearing block; 7. Limiting block; 8. Friction block; 9. Support block. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0020] Please see Figure 1 - Figure 4 As shown, this embodiment provides a cable traction anti-torsion device for communication pipeline construction, including a support part 1, a cable bearing part 2, and a reset anti-torsion part 3. The cable bearing part 2 and the reset anti-torsion part 3 are respectively disposed on the support part 1. The reset anti-torsion part 3 includes a first rotating component 31, a second rotating component 32, and a spring 33. The first rotating component 31 and the second rotating component 32 are rotatably connected to the support part 1, and the spring 33 is disposed between the first rotating component 31 and the second rotating component 32, with both ends of the spring 33 fixedly connected to the first rotating component 31 and the second rotating component 32, respectively. The cable bearing part 2 is disposed on the first rotating component 31. Between the first and second rotating components 32, and with both sides of the cable carrying part 2 respectively in contact with the first rotating component 31 and the second rotating component 32, the cable carrying part 2 includes a first limiting ring 21 for cable passage. The first limiting ring 21 is located below the support part 1. The cable carrying part 2 keeps the cable centered and guided. The spring 33 cooperates with the first rotating component 31 and the second rotating component 32 to provide a flexible restoring force, so that the device can adapt to cable swing and resist impact, prevent cable twisting and mechanical locking. The first limiting ring 21 is an openable structure. Specifically, the first limiting ring 21 can be a structure of two semicircles, which are fixed together by bolts.

[0021] The support unit 1 serves as the installation foundation for the entire device, providing a stable structural frame to ensure that other components can be reliably fixed in the pipe. The cable-carrying unit 2 physically constrains the passing cable through its first limiting ring 21. This limiting ring is specifically positioned below the support unit 1 and designed as an openable structure, which not only achieves initial centering guidance of the cable and effectively prevents deflection due to gravity, but also greatly facilitates the insertion and installation of the cable during construction. The reset and anti-torsion unit 3 is the core of achieving self-adaptive and impact-resistant capabilities. Its first rotating component 31 and second rotating component 32 are respectively rotatably connected to the support unit 1, giving the device two degrees of freedom. The cable has a swinging ability, and the two ends of the spring 33, which is located between the two components, are fixedly connected to the rotating components. At the same time, the two sides of the cable bearing part 2 are in contact with the two rotating components. This configuration allows the cable bearing part 2 to deflect when the cable is subjected to lateral impact or jamming. This causes the two rotating components to rotate relative to each other and compress or stretch the spring 33. The flexible restoring force generated by the spring 33 can absorb and buffer the impact energy instantly, avoiding rigid collisions and component overload damage. It can also automatically and smoothly pull the cable back to the center position after swinging, thereby dynamically preventing cable twisting and eliminating the mechanical locking phenomenon of the device during the entire traction process.

[0022] In the field of communication pipeline construction, especially in cable pulling operations involving vertical shafts, steeply inclined pipelines, or long and complex paths, preventing cable kinking is crucial. Existing technologies mostly employ anti-torsion devices such as universal joints or bearing-type rotators. The core design of these devices is to release the rotational stress of the cable around its own axis. These passive devices are effective when the cable is subjected to only pure torsional force and are the basic means of anti-torsion in current construction. However, when pulling cables in non-horizontal pipelines and long and complex paths, traditional anti-torsion devices cause the cable to deviate from the central axis of the pipeline due to gravity, increasing frictional resistance. Furthermore, when encountering sudden lateral jamming or impact tension, the device is prone to reaching its mechanical travel limit, resulting in rigid collisions, overload damage to the spring, or mechanical locking, thus failing to effectively prevent torsion.

[0023] To address the aforementioned issues, the cable carrier 2 is positioned below the support 1. Its first limiting ring 21 guides the cable as it passes through, preventing initial deviation of the conduit centerline due to gravity or installation errors, thus directly reducing traction friction resistance. The first rotating assembly 31 and the second rotating assembly 32 in the reset and anti-twist part 3 are rotatably connected to the support 1, with a spring 33 positioned between them. The two ends of the spring 33 are fixedly connected to the two rotating assemblies. This structure ensures that when the cable oscillates due to lateral impact or jamming, the deflection of the cable carrier 2 drives the first rotating assembly 31 and the second rotating assembly 32. The two rotating components 32 rotate relative to each other, thereby compressing or stretching the spring 33. The flexible restoring force generated by the spring 33 can absorb and buffer the impact energy, allowing the device to adapt to the swing of the cable and prompting the cable bearing part 2 to return to the centered state. This flexible restoring mechanism fundamentally solves the problem that when cables are pulled in non-horizontal pipelines and long-distance complex paths, traditional anti-torsion devices cause the cable to deviate from the central axis of the pipeline due to gravity, increasing frictional resistance. Furthermore, when encountering sudden lateral jamming or impact tension, the device is prone to reaching the mechanical travel limit, resulting in rigid collisions, overload damage to the spring 33, or mechanical lock-up, thus failing to effectively prevent torsion.

[0024] In actual stress, if the swaying of the cable bearing part 2 and the rotation of the reset anti-torsion part 3 lack a common and precise rotation reference, motion interference, uneven wear, or additional frictional resistance are likely to occur, causing the reset action to jam. This not only consumes traction energy but also weakens its self-adaptive and shock-resistant performance, and may even lead to local failure. In this regard, in one embodiment, the support part 1 includes a support shaft 11 and a bracket 12. The support shaft 11 is mounted on the bracket 12, and the cable bearing part 2 and the reset anti-torsion part 3 are both mounted on the support shaft 11. The support shaft 11 serves as a common and high-precision rotation hub, coaxially connecting the second limiting ring 22 of the cable bearing part 2 and the first and second rotating components 32 of the reset anti-torsion part 3, ensuring that all rotating parts move around the same axis, fundamentally avoiding motion interference and energy loss caused by axis deviation. The bracket 12 serves as the base of the entire device, firmly installing the support shaft 11 at the predetermined position in the pipe or working well, providing a solid and reliable fixed foundation for the entire motion system, improving the motion accuracy and structural rigidity of the device, so that the deflection of the cable bearing part 2 can be accurately and smoothly transmitted to the reset anti-torsion part 3, and the energy is efficiently absorbed and released by the spring 33, thereby reliably realizing adaptive cable swing and resisting impact under complex working conditions.

[0025] To further improve the overall responsiveness and reliability of the device, in one embodiment, the cable bearing part 2 further includes a second limiting ring 22 and a guide rod 23. The first rotating assembly 31, the second rotating assembly 32, and the second limiting ring 22 are all rotatably sleeved on the support shaft 11. The first limiting ring 21 and the guide rod 23 are respectively disposed on both sides of the second limiting ring 22. Figure 3 As shown, by introducing a second limiting ring 22 and a guide rod 23 into the cable bearing section 2, and precisely fitting them with the support shaft 11, a crucial positioning and rotation fulcrum coaxial with the support shaft 11 is added to the cable bearing section 2. This transforms it from a suspended swing structure formed by a first limiting ring 21 into a stable "lever" that can precisely deflect around an axis, greatly enhancing its motion stability. The guide rod 23 and the first limiting ring 21 are respectively located on both sides of the second limiting ring 22. This structure allows the cable's tensile force and potential lateral impact force to be converted into a force centered on the second limiting ring 22. With a fulcrum and a clearly defined lever arm, the torque drives the entire cable bearing part 2 to produce a deflection with a clear direction and controllable amplitude. This precisely guided deflection action is then smoothly and efficiently transmitted to the reset anti-torsion part 3 through the contact surfaces of the cable bearing part 2 with the first rotating component 31 and the second rotating component 32 on both sides. Finally, the energy is absorbed and released by the spring 33. In other words, this design restricts the disordered swing of the cable to an orderly and controllable deflection motion within the device, ensuring that the reset anti-torsion part 3 can play a precise role, thereby fundamentally improving the overall responsiveness and reliability of the device.

[0026] To ensure that the guide rod 23 avoids stress concentration and sudden mechanical locking when subjected to large swings, in one embodiment, the guide rod 23 includes a cylindrical rod 231 and a frustum rod 232. The cylindrical rod 231 is mounted on the second limiting ring 22 via a support block 9. The frustum rod 232 is mounted on the cylindrical rod 231, and the cross-sectional radius of the frustum rod 232 gradually increases from the end closer to the cylindrical rod 231 to the end farther away from the cylindrical rod 231. The length of the cylindrical rod 231 is twice the length of the frustum rod 232. The cylindrical rod 231 provides a length-stable and direction-controllable lever arm, ensuring that the device can generate a precise and linear deflection response when the cable swings slightly, thereby achieving sensitive correction of minor offsets. The connected frustum rod 232 has a cross-section... The radius gradually increases from the near end to the far end, forming a progressive guide ramp. When the cable swings significantly, this ramp can contact the cable before it reaches its limit position, and decompose the violent lateral impact force into a gradually increasing normal component pointing towards the center of the pipe. This achieves progressive guidance and buffering from soft to hard, effectively avoiding stress concentration and sudden mechanical locking. The design of the cylindrical rod 231 being twice the length of the frustum rod 232 ensures that the sensitive linear response section is much larger than the limit buffer section, so that the device is in a highly efficient and sensitive correction state for most of the working time, and only activates powerful anti-collision protection in extreme cases. This design optimizes the adaptability of the device to different working conditions, and upgrades passive response to intelligent active prevention.

[0027] To efficiently, reliably, and controllably convert the deflection motion of the cable carrier 2 into the deformation of the return spring 33, and simultaneously provide precise mechanical limits for the entire swing system, in one embodiment, both the first rotating assembly 31 and the second rotating assembly 32 include a rotating ring 4, a U-shaped support frame 5, a carrier block 6, and a limiting block 7. The rotating ring 4 is rotatably sleeved on the support shaft 11. One end of the crossbar of the U-shaped support frame 5 is vertically mounted on the rotating ring 4. The limiting block 7 is mounted on the end of the other crossbar of the U-shaped support frame 5. The carrier block 6 is mounted on one side of the outer wall of the vertical bar of the U-shaped support frame 5. The spring 33 is positioned between the two carrier blocks 6, with both ends of the spring 33 connected to the two carrier blocks 6 respectively. The rotating ring 4 is directly sleeved on the support shaft 11, ensuring the coaxial accuracy of the component rotation. The frame 5 is fixed to the rotating ring 4 by a crossbar, forming a rigid lever frame that can effectively transmit the rotational motion of the rotating ring 4 to a specific position in space. The bearing block 6 is set on the vertical bar of the U-shaped support frame 5, providing two stable and directional force application points for the spring 33 at a certain spatial distance, ensuring that the spring 33 is always subjected to force in the predetermined direction when compressed or stretched, avoiding twisting and instability, thereby efficiently converting mechanical energy into the potential energy of the spring 33. The limiting block 7 set on the crossbar at the other end of the U-shaped frame fits against both sides of the support block 9 of the cable bearing part 2. This design constitutes a mechanical stop mechanism, which limits the maximum angle of left and right swing of the cable bearing part 2, fundamentally preventing overload of the spring 33, mechanical interference or locking caused by excessive swing amplitude.

[0028] It is worth mentioning that although the contact between the limiting block 7 and the support block 9 effectively prevents overshoot, the purely rigid contact can still produce severe impact, noise, and instantaneous recoil when the cable bearing part 2 touches the limit with a large kinetic energy. This high-frequency impact can accelerate component fatigue and may indirectly damage the cable. In addition, under non-extreme conditions, the small gaps or smooth contact surfaces that are allowed between the support block 9 and the limiting block 7 may cause wear on the equipment during traction vibration. To address this, in one embodiment, the two sides of the support block 9 are respectively contacted with two limiting blocks 7, and friction blocks 8 are provided on the end faces of the two limiting blocks 7 and the support block 9. The two sides of the support block 9 are provided with first serrated rings, and the friction blocks 8 are provided with second serrated rings that mesh with the first serrated rings. By providing first serrated rings on the two sides of the support block 9 and friction blocks 8 with second serrated rings on the contact end faces of the two limiting blocks 7, when the cable... When the load-bearing part 2 deflects to near its limit position, the sawtooth ring on the support block 9 and the limiting block 7 begins to mesh. This process produces two key effects: First, the inclined meshing of the sawtooth converts part of the lateral impact kinetic energy into a positive pressure that presses the friction block 8 and the support block 9 together, thereby continuously dissipating the swing energy through frictional damping. Second, the meshing process of the sawtooth is itself a gradual buffering process with decreasing displacement increment and increasing resistance, rather than an instantaneous rigid stop. This design transforms the swing termination behavior of the cable load-bearing part 2 from a harsh impact into a creeping motion with effectively controlled energy dissipation, greatly softening the limiting impact and protecting all mechanical components and the cable itself. At the same time, during normal small swings, the potential meshing tendency of the sawtooth ring also increases the system damping, reducing unnecessary shaking and wear, thereby comprehensively improving the dynamic stability, durability, and smooth operation of the device.

[0029] Considering the limited number of cable traction anti-torsion devices, and how to systematically and preferentially suppress the most likely and harmful swaying and twisting of cables during long-distance traction through an optimal deployment strategy, thereby maximizing the effectiveness of the entire anti-torsion system and achieving an upgrade from passive response to active prevention, a method for using a cable traction anti-torsion device for communication pipeline construction is proposed, including the following steps: S1: Determine the traction path, and install the first cable traction anti-twist device and the second cable traction anti-twist device at the traction start point and traction end point of the predetermined pipeline, respectively, with a set distance L between them; S2: Pass the end of the communication cable to be pulled through the first limit ring 21 of the first cable pulling anti-twist device and the second cable pulling anti-twist device in sequence; S3: Install a third cable traction anti-twist device at the midpoint between the first cable traction anti-twist device and the second cable traction anti-twist device, and pass the cable through the first limiting ring 21 of the third cable traction anti-twist device. S4: Using the second cable traction anti-torsion device as a reference, install the fourth cable traction anti-torsion device at a distance L along the traction direction, so that the second and fourth cable traction anti-torsion devices are spaced apart by a distance L, and pass the cable through the first limiting ring 21 of the fourth cable traction anti-torsion device. S5: Install the fifth cable traction anti-torsion device at the midpoint between the second and fourth cable traction anti-torsion devices, and pass the cable through the first limiting ring 21 of the fifth cable traction anti-torsion device; S6: Repeat the deployment method of S4 and S5, using the newly installed device as a reference, continue to install new devices at a distance L, and install additional devices at the midpoint between adjacent devices, until the entire traction path is covered. S7: The cable is pulled by a traction device. The cable traction anti-torsion device cooperates with the spring 33 of the reset anti-torsion part 3 and the rotating component to adapt to the cable swing and provide a flexible reset force to prevent the cable from twisting and mechanically locking.

[0030] It's important to note that the method used for cable traction and anti-torsion devices in this communication pipeline construction achieves system stability by prioritizing the control of the largest and most unstable span. First, devices are deployed at both ends of a distance L, where the maximum span of the entire path is L, and the risk and amplitude of cable sway are greatest within this span. Then, a third device is immediately installed at the midpoint of the maximum span L. This effectively divides the most unstable long span L into two shorter spans L / 2. This operation prioritizes eliminating the most dangerous source of sway in the system, rapidly improving the overall stability of the cable. This recursive logic, consistently reinforcing deployment at the "midpoint of the current maximum span," ensures that limited device resources are used where they are most needed. Furthermore, this method does not simply fill in the midpoints, but rather proceeds in a loop of expansion and encryption. First, a new endpoint is established, forming a new main support point, and then encryption is carried out at the midpoint of this new span. This deployment does not form a uniform structure, but rather a tiered defense system with main support points (endpoints) and secondary buffer points (midpoints). When the cable is impacted, the shock wave is effectively buffered and absorbed by the "midpoint" device in the middle before it is transmitted to the next main support point. This structure dissolves the concentrated large impact into multiple dispersed small impacts, allowing the spring 33 reset part of each device to function within its optimal working range, greatly reducing the risk of any device failing due to overload.

[0031] Working principle and usage process of this invention: The cable carrier 2 is positioned below the support 1. Its first limiting ring 21 is used for the cable to pass through and keep the cable centered. Structurally, this initially avoids the deviation of the pipe centerline caused by the cable due to gravity or installation deviation, thereby directly reducing traction friction resistance. In the reset and anti-torsion part 3, the first rotating component 31 and the second rotating component 32 are rotatably connected to the support 1, and a spring 33 is set between them. The two ends of the spring 33 are fixedly connected to the two rotating components. This structure allows the cable carrier 2 to drive the first rotating component 31 and the second rotating component 32 to rotate relative to each other when the cable is subjected to lateral impact or jamming and swings. This causes the spring 33 to compress or stretch the spring 33. The flexible reset force generated by the spring 33 can absorb and buffer the impact energy, allowing the device to adapt to the swing of the cable and prompt the cable carrier 2 to return to the centered state. First, the staff surveyed the entire traction path to determine the pipeline's direction, bends, and manhole / manhole locations. Based on this, they planned the placement of each cable traction anti-torsion device. Construction workers entered the pipeline or manhole and, along the planned path, installed and fixed all the cable traction anti-torsion devices to their designated positions. During installation, the first limiting ring 21 of the device was in the open state. Using methods such as air blowing, pipe threading tools, or pilot ropes, the high-strength traction rope was laid from the starting point to the end point. During this process, the traction rope passed through the first limiting ring 21 of all the cable traction anti-torsion devices in sequence. At the end point, the end of the traction rope was securely connected to the end of the communication cable. The traction machine at the starting point then began to work, retrieving the traction rope and dragging the cable through all the pre-set cable traction anti-torsion devices in sequence. After the traction was completed, these cable traction anti-torsion devices were disassembled and retrieved one by one.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cable traction and anti-twist device for communication pipeline construction, characterized in that, The device includes a support section, a cable carrying section, and a reset and anti-torsion section. The cable carrying section and the reset and anti-torsion section are respectively disposed on the support section. The reset and anti-torsion section includes a first rotating component, a second rotating component, and a spring. The first rotating component and the second rotating component are rotatably connected to the support section. The spring is disposed between the first rotating component and the second rotating component, and both ends of the spring are fixedly connected to the first rotating component and the second rotating component, respectively. The cable carrying section is disposed between the first rotating component and the second rotating component, and both sides of the cable carrying section are respectively in contact with the first rotating component and the second rotating component. The cable carrying section includes a first limiting ring for cable passage. The first limiting ring is located below the support section. The cable carrying section keeps the cable centered and guided. The spring cooperates with the first rotating component and the second rotating component to provide a flexible reset force, enabling the device to adapt to cable swing and resist impact, preventing cable twisting and mechanical locking. The support includes a support shaft and a bracket. The support shaft is mounted on the bracket, and the cable carrying part and the reset anti-torsion part are both mounted on the support shaft. The cable bearing part further includes a second limiting ring and a guide rod. The first rotating component, the second rotating component and the second limiting ring are all rotatably sleeved on the support shaft. The first limiting ring and the guide rod are respectively arranged on both sides of the second limiting ring. The guide rod includes a cylindrical rod and a frustum rod. The cylindrical rod is mounted on the second limiting ring via a support block. The frustum rod is mounted on the cylindrical rod, and the cross-sectional radius of the frustum rod gradually increases from the end closest to the cylindrical rod to the end furthest from the cylindrical rod. The first rotating assembly and the second rotating assembly both include a rotating ring, a U-shaped support frame, a bearing block, and a limiting block. The rotating ring is rotatably sleeved on the support shaft. One end of one of the crossbars of the U-shaped support frame is vertically disposed on the rotating ring. The limiting block is disposed on the end of the other crossbar of the U-shaped support frame. The bearing block is disposed on one side of the outer wall of the vertical bar of the U-shaped support frame. The spring is disposed between the two bearing blocks, and both ends of the spring are respectively connected to the two bearing blocks. The two sides of the support block are respectively attached to two limiting blocks; Friction blocks are provided on the end faces of the two limiting blocks that are in contact with the support blocks. First serrated rings are provided on both sides of the support blocks, and second serrated rings that mesh with the first serrated rings are provided on the friction blocks.

2. The cable traction and anti-torsion device for communication pipeline construction according to claim 1, characterized in that, The length of the cylindrical rod is twice the length of the frustum rod.

3. The cable traction and anti-torsion device for communication pipeline construction according to claim 1, characterized in that, The first limiting ring is an openable and closable structure.

4. A method of using a cable traction and anti-torsion device for communication pipeline construction, based on the cable traction and anti-torsion device for communication pipeline construction according to any one of claims 1-3, characterized in that, Includes the following steps: S1: Determine the traction path, and install the first cable traction anti-twist device and the second cable traction anti-twist device at the traction start point and traction end point of the predetermined pipeline, respectively, with a set distance L between them; S2: Pass the end of the communication cable to be pulled through the first cable pulling anti-twist device and the first limiting ring of the second cable pulling anti-twist device in sequence. S3: Install a third cable traction anti-twist device at the midpoint between the first cable traction anti-twist device and the second cable traction anti-twist device, and pass the cable through the first limiting ring of the third cable traction anti-twist device. S4: Using the second cable traction anti-torsion device as a reference, install the fourth cable traction anti-torsion device at a distance L along the traction direction, so that the second and fourth cable traction anti-torsion devices are spaced apart by a distance L, and pass the cable through the first limiting ring of the fourth cable traction anti-torsion device. S5: Install the fifth cable traction anti-torsion device at the midpoint between the second and fourth cable traction anti-torsion devices, and pass the cable through the first limiting ring of the fifth cable traction anti-torsion device. S6: Repeat the deployment method of S4 and S5, using the newly installed device as a reference, continue to install new devices at a distance L, and install additional devices at the midpoint between adjacent devices, until the entire traction path is covered. S7: Cable traction is carried out using traction equipment. The cable traction anti-torsion device uses the spring of the reset anti-torsion part to cooperate with the rotating component to adapt to the cable swing and provide a flexible reset force to prevent cable twisting and mechanical locking.

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