A source end inhibiting type cable anti-twisting laying device

Abstract

A source end inhibits type cable anti-twist laying device belongs to the technical field of cable laying construction, including support assembly, anti-twist unit, guide unit, drive unit and clamping assembly, the anti-twist unit includes rotating part and anti-twist part;The rotating part of the anti-twist unit is rotatably arranged relative to the support assembly, and rotates with the circumferential rotation of the cable;The anti-twist part of the anti-twist unit inhibits the over-limit rotation of the rotating part of the anti-twist unit;The guide unit is connected with the rotating part of the anti-twist unit.This device adopts pure mechanical structure without power supply, realizes anti-twist by gravity and elastic force, improves the resistance to rotation performance by high layout;Adjustable multi-point clamping ensures coaxiality, adapts to multiple types of cables;Compact structure is easy to maintain, without external power supply, with protective cover body, can be responsible for field operation;Two kinds of anti-twist structures are selected as needed, multiple limiting protection, excellent comprehensive anti-twist effect.

Description

Technical Field

[0001] This invention belongs to the field of cable laying construction technology, specifically relating to a source-end suppression type cable anti-twist laying device. Background Technology

[0002] When cables are twisted during installation, the internal twisted units are prone to loosening, which can not only increase the gap between the cores but also cause the cores to break, affecting the performance of the cable.

[0003] To address the aforementioned issues, the existing market typically resolves cable twisting problems by installing anti-twist devices. For example... Figure 21 The image shows a commonly used cable anti-twist device, which is connected in series between the cable end and the puller. During traction operations, the anti-twist device releases the torsional stress generated in the cable through its circumferential rotation, preventing the continuous accumulation of torque.

[0004] However, the aforementioned anti-twist devices are passive anti-twist designs, capable of only removing twists already formed during laying, and unable to constrain circumferential rotation at the source of cable twisting. Especially in the laying of optical fibers, high-precision signal lines, temperature-sensing cables, and various special power cables, process requirements strictly limit cable twisting and large-angle deflections; otherwise, internal structural damage or transmission performance failure is likely. Therefore, there is an urgent need to design a source-end suppression type cable anti-twist laying device to address these requirements. Summary of the Invention

[0005] To address the problem that existing anti-twist devices are passive anti-twist designs, only able to remove torsion already formed during laying, and unable to constrain circumferential rotation at the source of cable torsion, this invention provides a source-end suppression type cable anti-twist laying device. This device can constrain cable torsion and limit the angle of rotation from the source, effectively preventing internal structural damage and transmission performance failure caused by excessive torsion. It is particularly suitable for anti-twist laying of optical fibers, high-precision signal lines, temperature-sensing cables, and special power cables. The specific technical solution is as follows:

[0006] A source-end suppression type cable anti-twist laying device is used to suppress the torsion generated during cable laying. It includes a support assembly, an anti-twist unit, a guide unit, a drive unit, and a clamping assembly. The anti-twist unit includes a rotating part and an anti-twist part. The rotating part of the anti-twist unit is rotatably disposed relative to the support assembly and rotates with the circumferential rotation of the cable. The anti-twist part of the anti-twist unit prevents the rotating part from exceeding its rotation limit. The guide unit is connected to the rotating part of the anti-twist unit. The drive unit is rotatably disposed within the guide unit. Multiple clamping assemblies are evenly distributed along the circumferential direction of the cable and are controlled by the guide unit and the drive unit to clamp the cable against the circumferential sidewall.

[0007] The anti-torsion unit suppresses and limits the circumferential torsion of the rotating part of the anti-torsion unit, the guide unit, the drive unit, the clamping assembly, and the cable.

[0008] In the above technical solution, the support component includes a support and a support ring. The support is arranged in a vertical direction; the support ring is fixed on the support and is configured as a hollow ring structure.

[0009] In the above technical solution, the rotating part of the anti-torsion unit includes an annular seat and a gear ring. The annular seat is coaxial and rotatably disposed inside the support ring; the gear ring is coaxial and fixed to the outer wall of the annular seat.

[0010] In the above technical solution, the anti-torsion part of the anti-torsion unit is an arc-shaped anti-torsion part, which includes a first support arm, an arc-shaped guide seat, an arc-shaped rack, a mounting arm, a bent cylinder, a connecting hook, a first weight, and a first elastic element. The first support arm is arranged vertically; the arc-shaped guide seat is fixed on the first support arm and is configured as an arc-shaped structure; the arc-shaped rack is slidably disposed within the arc-shaped guide seat, adapting to the curvature of the arc-shaped guide seat, and the arc-shaped rack meshes with the gear ring; The mounting arms are symmetrically and vertically arranged on both sides of the first support arm; the curved cylinders are respectively fixed to the top of the mounting arms, and the inner cavity of the curved cylinder is set as an arc-shaped cylindrical structure, and the center of the curved cylinder is concentric with the center of the arc-shaped rack; the connecting hooks are symmetrically and fixed to both ends of the arc-shaped rack; the first weights are respectively fixed to the connecting hooks; one end of the first elastic element is fixed to the top of the inner cavity of the curved cylinder, and the other end is slidably arranged along the inner cavity of the curved cylinder, and the first weight is connected to the other end of the first elastic element;

[0011] The arc-shaped rack rotates in conjunction with the gear ring and, depending on the magnitude of the force applied, suppresses the torsion of the cable or causes it to deflect within a limited angle range.

[0012] In the above technical solution, the guiding unit includes an annular guide seat, a clearance groove, a slide groove, a strip seat, a slide rail, and a slide table.

[0013] An annular guide seat is coaxially fixed on the annular seat and is located on the side away from the gear ring; multiple sets of clearance grooves and sliding grooves are evenly opened along the circumferential sidewall of the annular guide seat, and the clearance grooves and sliding grooves are staggered; a strip seat is fixed on the circumferential sidewall of the annular guide seat, and the strip seat has an arc-shaped groove along its own length direction, and the center of the arc-shaped groove is concentric with the center of the outer sidewall of the annular guide seat; multiple sets of slide rails are vertically fixed along the circumferential sidewall of the annular guide seat; and slide tables are slidably sleeved on the slide rails.

[0014] In the above technical solution, the driving unit includes an annular ring, a connecting rod, a sliding pin, a stud, and a nut. The annular ring is coaxially disposed within the annular guide seat. Multiple sets of connecting rods are rotatably disposed along the circumferential sidewall of the annular ring, and the other end of each set of connecting rods is rotatably connected to the slide table. Multiple sets of sliding pins are fixed along the circumferential sidewall of the annular ring, and each set of sliding pins is slidably embedded in the inner cavity of the corresponding sliding groove. The stud is threaded through one set of sliding pins, and the stud penetrates the inner cavity of the arc-shaped groove of the strip seat. The nut is threadedly locked to the end of the stud, thereby locking the relative position of the sliding pin and the strip seat.

[0015] The connecting rod is arranged at an angle relative to the centerline of the slide rail along its length.

[0016] In the above technical solution, each clamping assembly includes a connecting seat, a mounting frame, and a limiting roller. The connecting seat is detachably disposed on the side wall of the slide table; the mounting frame is fixed to the end of the connecting seat; the limiting roller is rotatably disposed in the mounting frame, and the limiting roller is provided with a straight section in the middle and an expansion section extending symmetrically to both sides, and the expansion section of the limiting roller rolls against the circumferential side wall of the cable.

[0017] The cable is coaxially threaded through the annular seat, the annular guide seat, and the center of the annular ring in sequence, and the circumferential rotation of the cable is restricted by the circumferentially arranged limiting rollers.

[0018] The above technical solution also includes a base assembly, which includes a base frame and a mounting platform. The base frame is arranged in two corresponding groups; the mounting platform is fixed on the two groups of base frames.

[0019] The support, the first support arm, and the mounting arm are respectively fixed on the mounting platform.

[0020] The above technical solution also includes a cover assembly, which includes an outer cover, a door, and a through slot. The outer cover is fixed on the mounting platform. The door is rotatably opened and closed on the side wall of the outer cover, and the position of the door corresponds to the position of the strip seat. The through slot is opened through the front and rear side walls of the outer cover, allowing the cable to pass through the inner cavity of the through slot.

[0021] In the above technical solution, the anti-torsion part of the anti-torsion unit is a linear anti-torsion part, which includes a second support arm, a linear guide seat, a linear rack, a limiting platform, a straight cylinder, a second weight, and a second elastic element. The second support arm is arranged vertically; the linear guide seat is fixed on the second support arm; the linear rack is slidably arranged in the linear guide seat and is adapted to the shape of the linear guide seat, and the linear rack is meshed with the gear ring; the limiting platforms are symmetrically and vertically arranged on both sides of the second support arm; the straight cylinder is fixed in the limiting platform, and the inner cavity of the straight cylinder is set as a straight cylindrical structure; the second weight is symmetrically and fixed at both ends of the linear rack; one end of the second elastic element is fixed in the inner cavity of the straight cylinder, and the other end is slidably arranged along the inner cavity of the straight cylinder, and the other end of the linear rack is connected to the other end of the second elastic element.

[0022] The linear rack rotates in conjunction with the gear ring and, depending on the force applied, suppresses the torsion of the cable or causes it to deflect within a defined angle range.

[0023] The source-end suppression type cable anti-twist laying device of the present invention has the following advantages compared with the prior art:

[0024] I. In this invention, the torsional force on the cable is transmitted by a toothed ring and an arc-shaped rack, and the torsion of the cable is suppressed by the weight of the first weight block and the elastic force of the first elastic element, or the torsion angle is controlled within a range that does not affect its performance. This device can constrain the torsion and limit the angle of the cable from the source, effectively preventing the cable from being damaged internally and failing in transmission performance due to excessive torsion. It is especially suitable for anti-torsion laying conditions of optical fibers, high-precision signal lines, temperature sensing cables and special power cables.

[0025] II. In this invention, the first weight is installed at the free end of the arc-shaped rack. During the circumferential rotation of the arc-shaped rack synchronously with the cable, the first weight generates a counter-torque using its own weight, effectively hindering the rotation of the arc-shaped rack and thus reliably suppressing cable torsion. Placing the first weight in the high region of the free end of the arc-shaped rack increases the gravitational lever arm, resulting in a greater anti-rotation torque for the same weight, significantly improving anti-torsion capability. Furthermore, the balanced force distribution of the two sets of first weights on the left and right sides reduces component misalignment and vibration, improving the overall operational stability of the device.

[0026] Third, in this invention, the cable is inserted into the annular guide seat and is simultaneously clamped at multiple radial points by the clamping assembly. The clamping position is locked by the drive unit, which can complete the coaxial positioning of the cable inside the annular seat in one go. This assembly method can ensure that the cable has good coaxiality, so that the torsional force is evenly distributed and the torsion suppression mechanism at the rear end can operate stably for a long time. At the same time, this structure adopts an adjustable clamping design, which can be adapted to cables with different outer diameter specifications and meet the anti-torsion requirements of various cables.

[0027] Fourth, in this invention, when the cable is laid axially, the limiting roller forms a circumferential limit on the cable, restricting the cable from circumferentially deflecting relative to the limiting roller. Under this structural constraint, if the cable shows a tendency to twist, it needs to overcome the overall torsional resistance formed by the guiding unit, driving unit, clamping assembly, and cable, further strengthening the anti-twist capability at the source.

[0028] V. The drive unit can rotate relative to the guide unit and lock after rotation. The clamping assembly relies on the transmission action of the guide unit to achieve radial displacement adjustment. The guide unit, drive unit, and clamping assembly are coaxially assembled to form an integrated adjustable mechanism. This integrated design has a compact overall layout, high space utilization, and good operational flexibility and ease of adjustment. The movement coordination of each component is excellent, and the clamping state can be adjusted in one step. It also facilitates assembly, debugging, and subsequent disassembly and maintenance of individual components.

[0029] VI. This device is a purely mechanical structure without electrical control or power supply. It can operate independently without an external power source, making it suitable for outdoor cable laying scenarios without power supply. Its wide applicability eliminates the need for power connection installation, saving construction costs and improving operational efficiency. The device boasts high mechanical structural stability and convenient maintenance. Furthermore, the core structure is entirely housed within the enclosure, effectively resisting harsh external environments. It possesses excellent dustproof, waterproof, and impact-resistant properties, ensuring strong operational reliability and environmental adaptability.

[0030] VII. This invention employs two anti-torsion installation methods: an anti-torsion unit and a linear anti-torsion section. Both rely on the gravity of the weight block and the elastic force of the elastic element to suppress torsion. The arc-shaped rack in the anti-torsion unit extends along a circular arc, its movement trajectory matching the circumferential torsion of the cable, effectively constraining torsion at all angles. The horizontally arranged linear rack in the linear anti-torsion section adopts a symmetrical force-bearing form at both ends, ensuring stable load and suitability for linear installation environments. The two anti-torsion methods can be flexibly selected based on the installation space configuration and torsional load characteristics, achieving diverse adaptation of anti-torsion functions. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the cover assembly in Embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the outer cover in Embodiment 1 of the present invention;

[0033] Figure 3 This is a schematic diagram of the base assembly in Embodiment 1 of the present invention;

[0034] Figure 4 This is a schematic diagram of the arc-shaped guide seat in Embodiment 1 of the present invention;

[0035] Figure 5 This is a front view of the bent cylinder in Embodiment 1 of the present invention;

[0036] Figure 6 This is a top view of the support ring of Embodiment 1 of the present invention;

[0037] Figure 7 This is a right view of the support in Embodiment 1 of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the support component in Embodiment 1 of the present invention;

[0039] Figure 9 This is a schematic diagram of the limiting component in Embodiment 1 of the present invention;

[0040] Figure 10 This is a schematic diagram of the gear ring structure in Embodiment 1 of the present invention;

[0041] Figure 11 This is a schematic diagram of the connecting rod in Embodiment 1 of the present invention;

[0042] Figure 12 for Figure 11 Enlarged view of point A;

[0043] Figure 13 This is a schematic diagram of the mounting arm in Embodiment 1 of the present invention;

[0044] Figure 14 This is a schematic diagram of the arc-shaped rack in Embodiment 1 of the present invention;

[0045] Figure 15 This is a schematic diagram of the structure of the first heavy block in Embodiment 1 of the present invention;

[0046] Figure 16 This is a schematic diagram of the structure of the limiting platform in Embodiment 2 of the present invention;

[0047] Figure 17 This is a front view of the straight rack of Embodiment 2 of the present invention;

[0048] Figure 18 This is a schematic diagram of the linear guide seat in Embodiment 2 of the present invention;

[0049] Figure 19This is a schematic diagram of the structure of the straight rack in Embodiment 2 of the present invention;

[0050] Figure 20 This is a schematic diagram of the structure of the second heavy block in Embodiment 2 of the present invention;

[0051] Figure 21 Schematic diagram of an existing cable anti-twist device

[0052] Figures 1 to 20 In the middle, 1. Cable, 2. Support assembly, 201. Support, 202. Support ring, 3. Anti-torsion unit, 301. Annular seat, 302. Gear ring, 303. First support arm, 304. Arc-shaped guide seat, 305. Arc-shaped rack, 306. Mounting arm, 307. Bend, 308. Connecting hook, 309. First weight, 310. First elastic element, 4. Guide unit, 401. Annular guide seat, 402. Relief groove, 403. Slide groove, 404. Strip seat, 405. Slide rail, 406. Slide table, 5. Drive unit, 501. Ring 502. Connecting rod, 503. Sliding pin, 504. Stud, 505. Nut, 6. Clamping assembly, 601. Connecting seat, 602. Mounting bracket, 603. Limiting roller, 7. Base assembly, 701. Base frame, 702. Mounting platform, 8. Linear anti-torsion part, 801. Second support arm, 802. Linear guide seat, 803. Linear rack, 804. Limiting platform, 805. Straight cylinder, 806. Second weight, 807. Second elastic element, 9. Cover assembly, 901. Outer cover, 902. Door body, 903. Through groove. Detailed Implementation

[0053] The following are specific implementation cases and appendices. Figures 1 to 5 The present invention will be further described, but the present invention is not limited to these embodiments.

[0054] Example 1

[0055] This invention discloses a source-end suppression type cable anti-torsion laying device, mainly applied to mechanized traction laying operations of various flexible cables such as power cables, communication optical fibers, high-precision signal cables, and temperature-sensing special cables. It is particularly suitable for construction conditions prone to circumferential torsion, such as cable entry into trenches, overhead traction, and long-distance dragging. The core design purpose of the device is to actively constrain and suppress circumferential torsion behavior of the cable at the source of cable laying, avoiding engineering problems such as internal core breakage, insulation layer wrinkling and damage, decreased transmission accuracy, and reduced service life caused by excessive torsion. This device can be used as needed for anti-torsion correction operations before cable laying into trenches, and is also widely adaptable to various construction sites requiring continuous anti-torsion traction of cables, with a wide range of applicable conditions and strong environmental adaptability. The following focuses on the source-end anti-torsion constraint condition of cable 1 before entering the laying trench, combined with the attached... Figure 1 To be continued Figure 15 This paper provides a complete and detailed explanation of the specific structure, assembly relationship, parameter matching and working principle of this device.

[0056] See Figures 1 to 15 As shown, a source-end suppression type cable anti-torsion laying device is used to suppress circumferential torsional deviation generated during the laying of cable 1. The whole adopts a purely mechanical passive integrated structure, mainly including a support component 2, an anti-torsion unit 3, a guide unit 4, a drive unit 5, and a clamping component 6. Among them, the anti-torsion unit 3 is the core anti-torsion functional component of the device, specifically divided into two major functional structures: a rotating part and an anti-torsion part. The rotating part of the anti-torsion unit 3 forms a rotatable assembly relationship with the support component 2, and can rotate synchronously with the circumferential torsion trend generated during the traction of cable 1, realizing the acquisition and transmission of torsional force. The anti-torsion part of the anti-torsion unit 3 cooperates with the rotating part to suppress the excessive rotation behavior of the rotating part in real time, realizing graded control and limit of the torsion angle. The guide unit 4 is coaxially fixedly connected to the end face of the rotating part of the anti-torsion unit 3, and can rotate synchronously with the rotating part circumferentially, providing a stable assembly reference and motion guidance reference for the drive unit 5 and the clamping component 6. The drive unit 5 is rotatably assembled inside the guide unit 4, and can complete angle adjustment and locking positioning by relying on the structural constraints of the guide unit 4. Multiple clamping components 6 are evenly arranged in a ring around the circumference of the cable 1. All clamping components 6 are synchronously controlled by the guide unit 4 and the drive unit 5 to achieve adaptive clamping and positioning of the circumferential sidewalls of the cable 1 with different outer diameter specifications.

[0057] The anti-torsion unit 3, guide unit 4, drive unit 5, and clamping assembly 6 are coaxially arranged throughout the entire process, forming an integrated force-bearing system based on the integrated assembly structure. Among them, the anti-torsion part of the anti-torsion unit 3 can suppress the circumferential torsional torque generated by the rotating part, guide unit 4, drive unit 5, clamping assembly 6, and cable 1 in real time, and limit the overall deflection angle, eliminating the problem of excessive torsion from the source of cable traction, and fundamentally ensuring the quality of cable laying and long-term service performance.

[0058] Main references Figures 6 to 8As shown, support component 2 serves as the load-bearing base for the entire machine, providing stable installation support and force benchmark for all functional components. Specifically, it includes support 201 and support ring 202. Support 201 adopts a vertical installation structure and is made of high-strength carbon steel, possessing high rigidity and deformation resistance, which can withstand field construction vibration and external impact, ensuring the stability of the overall machine installation benchmark. Support ring 202 adopts a hollow ring-shaped integrated structure, which is fixedly installed at the top of support 201 by welding or bolting. The hollow ring structure design can completely avoid the axial traction path of cable 1, while providing an annular rotation support point for the rotating part of anti-torsion unit 3, effectively constraining the radial runout of the rotating part and ensuring coaxiality and stability during rotation.

[0059] Main references Figure 4 , Figure 6 , Figures 8 to 11 As shown, the rotating part of the anti-torsion unit 3 is the core structure for torsional force acquisition and transmission, specifically including an annular seat 301 and a gear ring 302. The annular seat 301 is coaxially and rotatably assembled in the inner annular cavity of the support ring 202, with a clearance fit between the two, the clearance value controlled within the range of 0.2mm-0.5mm. This ensures that the annular seat 301 can rotate flexibly in the circumferential direction, while effectively limiting radial offset and avoiding rotational jamming and eccentric wear. The gear ring 302 is installed on the outer wall of the annular seat 301 in an integrated coaxial fixing manner. The coaxiality error between the gear ring 302 and the annular seat 301 is controlled within 0.1mm, ensuring the uniformity and synchronization of torsional force transmission. When cable 1 exhibits a circumferential torsion tendency during traction and laying, the torsional force is transmitted step by step to the ring seat 301 through the clamping component 6 and the guide unit 4, driving the ring seat 301 and the toothed ring 302 fixed on the outside to rotate synchronously in the circumferential direction. This enables the collection and stable output of the cable torsional force, providing a force basis for the torque balance and torsion suppression of the subsequent anti-torsion part.

[0060] Main references Figure 3 , Figure 8 , Figures 13 to 15As shown, in this embodiment, the anti-torsion part of the anti-torsion unit 3 is an arc-shaped anti-torsion part, which adapts to the circumferential arc torsion trajectory of the cable to achieve torsion control. The arc-shaped anti-torsion part includes a first support arm 303, an arc-shaped guide seat 304, an arc-shaped rack 305, a mounting arm 306, a bend 307, a connecting hook 308, a first weight 309, and a first elastic element 310. The first support arm 303 adopts a vertical fixed structure and is vertically fixed on the upper end surface of the mounting platform 702 of the base assembly 7. It has strong overall rigidity and small verticality error, providing stable installation support for the arc-shaped guide seat 304. The arc-shaped guide seat 304 is fixedly installed at the upper end of the first support arm 303. The whole is set as an arc-shaped arc structure. Its arc curvature is completely matched with the circumferential torsion trajectory of the cable 1 and the rotation trajectory of the gear ring 302, ensuring that the sliding trajectory of the arc-shaped rack 305 is highly consistent with the torsion movement of the cable.

[0061] The arc-shaped rack 305 is slidably assembled in the inner groove of the arc-shaped guide seat 304. The curvature of the two is perfectly matched and the clearance is tight, ensuring smooth sliding without jamming. At the same time, the tooth structure of the arc-shaped rack 305 meshes with the teeth of the gear ring 302, achieving high meshing accuracy and small transmission clearance, enabling lossless transmission of torsional torque. The mounting arms 306 are symmetrically and vertically arranged on the left and right sides of the first support arm 303. The two sets of mounting arms 306 are symmetrically arranged and the force is balanced, effectively improving the overall structural stability. The curved cylinder 307 is fixedly installed on the top of the two sets of mounting arms 306 respectively. The inner cavity of the curved cylinder 307 is set as an arc-shaped cylindrical structure, and the center of the arc of the curved cylinder 307 is completely concentric with the rotation center of the arc-shaped rack 305, ensuring that the expansion and contraction deformation process of the first elastic element 310 is completely synchronized with the rotation trajectory of the arc-shaped rack 305, avoiding deformation interference and force offset.

[0062] The connecting hooks 308 are symmetrically fixedly installed at the left and right ends of the arc-shaped rack 305, adopting an integrated bending structure, which has high connection strength and good stress stability, and can stably hang the first weight 309. The first weight 309 is fixedly installed on the two sets of connecting hooks 308 respectively. In this embodiment, the first weight 309 is a high-density metal counterweight. The weight of a single weight can be flexibly adjusted according to the cable's anti-torsion requirements. Under normal working conditions, the weight of a single weight is set to 0.5kg-5kg, and the gravity load is stable and has no attenuation. By arranging the first weight 309 in the high area of ​​the free end of the arc-shaped rack 305, the gravity lever arm can be maximized, and a larger reverse anti-rotation torque can be obtained under the same counterweight conditions, improving the device's anti-torsion capability. At the same time, the double-sided symmetrical counterweight structure can completely offset the force deviation on one side, avoiding component vibration and displacement.

[0063] The first elastic element 310 adopts an arc-shaped adaptive spring component. One end is fixedly installed at the top of the inner cavity of the bend cylinder 307, and the other end slides along the arc-shaped trajectory of the inner cavity of the bend cylinder 307. The sliding end is stably connected to the first weight 309, realizing the coordinated cooperation of the counterweight gravity and the elastic force. In this embodiment, the first elastic element 310 can be matched with different elastic coefficients according to the torsional tolerance parameters of the cable. The conventional adaptive elastic coefficient range is 5N / mm-50N / mm: for low-torsional-tolerance cables such as optical fibers and high-precision signal lines, a first elastic element 310 with a low elastic coefficient of 5N / mm-15N / mm is selected to achieve small-angle flexible buffering and avoid rigid torsional damage; for high-torsional-tolerance cables such as power cables and large-diameter cables, a first elastic element 310 with a high elastic coefficient of 20N / mm-50N / mm is selected to achieve large-load torsional suppression. By differentiating the elastic coefficients, the rotation stroke of the arc-shaped rack 305 is controlled, thereby limiting the torsional angle of the cable 1.

[0064] The working logic of this structure is as follows: the arc-shaped rack 305 can completely follow the gear ring 302 to mesh and rotate, and can adaptively switch between two anti-torsion working conditions according to the real-time force magnitude, so as to completely suppress the torsion of the cable 1 or controllable deflection within a limited angle range, taking into account the usage requirements of both harsh anti-torsion working conditions and flexible adaptation working conditions.

[0065] Specifically, when cable 1 is pulled and tends to twist circumferentially, it drives the gear ring 302 to rotate circumferentially, which in turn drives the meshing arc-shaped rack 305 to rotate along the trajectory of the arc-shaped guide seat 304. The device relies on the gravitational resistance of the first weight 309 and the elastic resistance of the first elastic element 310 to form a dual damping system to achieve graded torque control: when the real-time rotational force of the arc-shaped rack 305 is less than the gravitational driving force of the first weight 309, the reverse torque generated by the first weight 309 can directly lock the rotational behavior of the arc-shaped rack 305, completely suppressing the circumferential twisting of the gear ring 302 and cable 1, and achieving zero-torsion laying. When the real-time rotational force of the arc-shaped rack 305 is greater than the gravitational driving force of the first weight 309, the rigid locking fails, the first weight 309 moves synchronously with the displacement of the arc-shaped rack 305, and actively drives the first elastic element 310 to produce tensile or compressive elastic deformation, thereby releasing the instantaneous torsional load and avoiding structural rigid jamming damage. At the same time, the first elastic element 310 that has deformed will generate a reverse elastic force to balance the torsional torque of the arc-shaped rack 305 and counteract the torsional force of the cable 1.

[0066] More specifically, when the rotational force of the arc-shaped rack 305 is greater than the driving force of the first weight 309, the rotation direction of the arc-shaped rack 305 directly determines the deformation state of the first elastic elements 310 on both sides: the first elastic element 310 on the side rotating along the arc-shaped rack 305 is compressed and contracted, while the first elastic element 310 on the other side is stretched and extended. Taking the counterclockwise rotation of the arc-shaped rack 305 as an example, the first elastic element 310 on the right side is compressed and the first elastic element 310 on the left side is stretched. The opposing resultant forces generated synchronously by the two sets of first elastic elements 310 can limit the rotational stroke of the arc-shaped rack 305, and ultimately strictly limit the circumferential rotation angle of the gear ring 302 and the torsion angle of the cable 1 within the safe range that the cable structure can withstand, thus avoiding structural stress concentration caused by zero-torsion rigid constraint and preventing cable damage caused by excessive torsion.

[0067] Main references Figure 9 , Figure 11 As shown, the guide unit 4, as the core carrier for clamping adjustment and motion guidance, can rotate synchronously with the anti-torsion unit 3. Specifically, it includes an annular guide seat 401, a clearance groove 402, a sliding groove 403, a strip seat 404, a slide rail 405, and a slide table 406. The annular guide seat 401 adopts a hollow annular structure, coaxially fixedly installed on the end face of the annular seat 301, and arranged on the side opposite to the gear ring 302. It maintains absolute coaxiality with the annular seat 301 throughout its entire range and can rotate synchronously with the annular seat 301, providing a stable rotation reference for the subsequent clamping adjustment structure. Multiple sets of clearance grooves 402 and sliding grooves 403 are evenly arranged in annular rings along the circumferential sidewall of the annular guide seat 401. The clearance grooves 402 and sliding grooves 403 are staggered and do not interfere with each other. The clearance groove 402 is used to avoid the swing stroke of the connecting rod 502, and the sliding groove 403 is used to constrain the movement trajectory of the sliding pin 503, achieving zoning of actions and preventing interference.

[0068] A strip seat 404 is fixedly installed on the outer side of the circumferential sidewall of the annular guide seat 401. The strip seat 404 has an arc-shaped groove along its length, and the center of this groove is completely concentric with the center of the outer sidewall of the annular guide seat 401, ensuring that the sliding pin 503 moves coaxially throughout the adjustment process without any eccentric offset. A slide rail 405 is vertically fixedly installed on the circumferential sidewall of the annular guide seat 401. Multiple sets of slide rails 405 are evenly distributed in a ring, providing radial linear guidance for the slide table 406 and constraining the slide table 406 to only move radially along the annular guide seat 401. The slide table 406 is slidably fitted onto the corresponding slide rail 405. The two slide in a smooth and precise manner, and the radial movement towards or away from the center can be adjusted by the power of the drive unit 5.

[0069] Main references Figure 9 , Figure 11 , Figure 12As shown, the drive unit 5 is a structure for adjusting and locking the clamping force and clamping position, specifically including an annular ring 501, connecting rod 502, sliding pin 503, stud 504, and nut 505. The annular ring 501 is coaxially arranged in the hollow area inside the annular guide seat 401, and is clearance-fitted with the annular guide seat 401, allowing free relative rotation. Multiple sets of connecting rods 502 are rotatably mounted on the circumferential sidewall of the annular ring 501, and the end of each set of connecting rods 502 is rotatably hinged to the corresponding slide table 406, forming a linkage transmission structure in which the annular ring 501 rotates, the connecting rods 502 swing, and the slide table 406 is radially displaced. The sliding pin 503 is fixedly installed on the circumferential sidewall of the annular ring 501, and each set of sliding pins 503 is slidably embedded in the inner cavity of the corresponding groove 403. The groove 403 can constrain the movement trajectory of the sliding pin 503, thereby limiting the rotation range of the annular ring 501.

[0070] The stud 504 is threaded onto one of the sliding pins 503, and the stud 504 rod penetrates the arc-shaped groove of the strip seat 404, allowing it to slide synchronously along the arc-shaped groove with the sliding pins 503. The nut 505 is threaded onto the protruding end of the stud 504. After the clamping position is adjusted to the correct position, tightening the nut 505 will press it tightly against the side wall of the strip seat 404. The thread preload locks the relative position of the sliding pins 503 and the strip seat 404, fixing the rotation angle of the ring 501, and finally locking the radial position of all slides 406, achieving stable locking of the clamping state.

[0071] In this design, the connecting rod 502 is inclined relative to the centerline of the slide rail 405 throughout its entire length. Even when the sliding pin 503 slides to the limit position at the top of the inner cavity of the slide groove 403, the connecting rod 502 remains inclined, preventing horizontal or vertical jamming. This effectively ensures the transmission flexibility of the connecting rod 502, avoids structural self-locking and jamming failures at the adjustment limit position, and guarantees the smoothness and stability of the entire stroke adjustment. This inclined transmission structure design can convert the circumferential rotation of the ring ring 501 into the radial linear displacement of the slide table 406, resulting in high transmission efficiency and good action synchronization.

[0072] Main references Figure 3 , Figure 5 , Figure 9 , Figure 11As shown, each clamping assembly 6 is an independent adaptive clamping structure. Multiple clamping assemblies 6 are evenly distributed in a ring and work together. Specifically, they include a connecting seat 601, a mounting bracket 602, and a limiting roller 603. The connecting seat 601 is detachably installed on the outer wall of the slide table 406 and adopts a bolt-on detachable assembly structure, which facilitates the replacement, maintenance, and adaptation of parts in the future, and has strong versatility. The mounting bracket 602 is fixedly installed on the outer end of the connecting seat 601, providing a stable rotating mounting carrier for the limiting roller 603. The limiting roller 603 is rotatably assembled inside the mounting bracket 602. The roller body adopts a composite structure design, with a straight section in the middle and an expansion section extending symmetrically to both sides. The overall outline perfectly matches the cylindrical side wall of the cable 1. The expansion section of the limiting roller 603 rolls against the circumferential side wall of the cable 1, which can not only achieve circumferential limiting of the cable 1, but also reduce the sliding friction of the cable axial traction, and avoid excessive clamping causing wear on the cable sheath.

[0073] In the overall assembled state, cable 1 sequentially and coaxially passes through the central through holes of annular seat 301, annular guide seat 401, and annular ring 501, maintaining a coaxial layout throughout. Multiple sets of evenly distributed annular limiting rollers 603 synchronously engage and limit the cable at multiple points around its circumference, restricting circumferential deflection of cable 1 relative to the limiting rollers 603 while not restricting the axial traction movement of cable 1, perfectly adapting to the requirements of continuous cable laying operations. The multi-point coaxial clamping structure ensures uniform circumferential distribution of cable torsional force, avoiding localized torsional stress concentration caused by eccentric force at a single point, improving the anti-torsion stability of the device and the safety of cable laying.

[0074] Main references Figure 3 , Figures 5 to 7 As shown, this device also includes a base assembly 7, which serves as the base for the entire machine, used to fix all functional components and ensure the integrity and stability of the overall assembly. The base assembly 7 includes a base frame 701 and a mounting platform 702. The two sets of base frames 701 are symmetrically arranged, employing a floor-mounted support structure for strong support stability. The mounting platform 702 is fixedly mounted on the upper surfaces of the two sets of base frames 701, forming a horizontal mounting reference surface. The support 201 of the support assembly 2, the first support arm 303 of the anti-torsion part, and the mounting arm 306 are all vertically fixedly mounted on the upper surface of the mounting platform 702. All components have a unified mounting reference and high coaxiality and perpendicularity accuracy, ensuring the stability of the entire machine's operation from a hardware perspective.

[0075] Main references Figure 1 and Figure 2As shown, this device is also equipped with a cover assembly 9 for protecting the core mechanical structure, adapting to complex outdoor construction environments. The cover assembly 9 includes an outer cover 901, a door 902, and a through slot 903. The outer cover 901 is fixedly installed on the upper surface of the mounting platform 702, housing and enclosing the core structure of the guide unit 4, drive unit 5, clamping assembly 6, and anti-torsion unit 3. It provides dustproof, waterproof, impact-resistant, and shock-resistant protection, effectively resisting the harsh environmental effects of outdoor wind, sand, rain, and gravel impacts, thus extending the equipment's service life. The door 902 is rotatably mounted on the side wall of the outer cover 901, and its position corresponds to the adjustment position of the strip seat 404 and drive unit 5, allowing for convenient opening and closing, facilitating quick cable clamping adjustment, locking debugging, and subsequent maintenance by operators. The through slot 903 is opened through the front and rear side walls of the outer cover 901 and is coaxially arranged. It is specifically used for the axial insertion and exit of the cable 1, providing a regular passage path for cable traction and laying, while further constraining the coaxiality of the cable laying.

[0076] Specifically, in this embodiment, the first elastic element 310 is a high-precision industrial arc spring component, which is integrally assembled with the arc spring body and the fixed mounting bases at both ends. It has strong structural stability, high deformation accuracy, and good elastic linearity. Under external force, it can achieve stable tensile and compressive elastic deformation, and can quickly reset after unloading. It has no plastic deformation and no elastic force attenuation, and can provide a stable reverse balancing force for a long time. The elastic coefficient of the first elastic element 310 can be flexibly selected according to the actual construction conditions and cable torsion tolerance parameters. Through differentiated elastic coefficient matching, the torsion buffer threshold and deflection limit range of the device can be adjusted to adapt to different types, specifications, and torsion resistance cable products, thereby improving the versatility and adaptability of the device.

[0077] The complete working principle of the source-end suppression type cable anti-twist laying device in this embodiment is as follows:

[0078] Before construction, the free end of cable 1 is axially threaded from the anti-torsion unit 3 side towards the clamping assembly 6 side. The through grooves 903 on the front and rear side walls of the outer cover 901 provide sufficient clearance for the cable 1 to pass through, avoiding interference and wear between the cable and the outer cover structure during the threading process. After threading is completed, the door 902 on the side wall of the outer cover 901 is rotated to expose the internal adjustment structure, allowing for clamping and adjustment of the guide unit 4 and the drive unit 5. The operator manually rotates the sliding pin 503, causing it to slide smoothly clockwise along the inner cavity of the slide groove 403, simultaneously driving the annular ring 501 to rotate clockwise coaxially inside the annular guide seat 401.

[0079] During the clockwise rotation of the annular ring 501, multiple sets of inclined connecting rods 502 arranged in a circular pattern on the outer periphery swing synchronously. Relying on the lever arm conversion effect of the inclined transmission structure, the slides 406 hinged at the ends of each set of connecting rods 502 are continuously pushed to slide along the corresponding slide rails 405 toward the center of the annular guide seat 401, realizing synchronous radial feeding of multiple sets of slides 406. During the radial displacement of the slides 406, the outer detachable connecting seat 601 and mounting bracket 602 are simultaneously displaced, ultimately driving the limiting rollers 603 inside the mounting bracket 602 to gradually fit and press against the circumferential sidewall of the cable 1, completing the circumferential multi-point limiting clamping of the cable 1.

[0080] Multiple sets of limiting rollers 603 are evenly attached to the circumference of the cable 1 to form a ring-shaped wrapping limiting structure. This not only provides all-round circumferential rotation constraint for the cable 1, but also corrects the assembly position of the cable 1. This ensures that the cable 1, the ring seat 301, the ring guide seat 401, and the ring ring 501 remain coaxial throughout the clamping process. This effectively avoids problems such as eccentric force, unilateral wear, and uneven distribution of torsional force, providing an assembly foundation and force conditions for the smooth operation of the subsequent anti-torsion mechanism.

[0081] Throughout the entire process of adjusting the rotation of the sliding pin 503 and the radial feed of the slide table 406, the stud 504 synchronously follows the sliding pin 503 in a coaxial arc sliding motion along the arc groove of the strip seat 404, with smooth sliding and no offset or jamming throughout. When the limit roller 603 is in contact with the side wall of the cable 1 and the clamping force and clamping position reach the preset construction standard, the operator tightens the nut 505, so that the end face of the nut 505 is tightly pressed against the outer side wall of the strip seat 404. Relying on the thread locking preload, the relative position of the stud 504 and the strip seat 404 is locked, thereby fixing the rotation angle of the sliding pin 503 and the ring 501, and finally achieving the position locking of all slide tables 406 and clamping components 6.

[0082] This locking structure can achieve overall circumferential fixation between the guide unit 4, drive unit 5, clamping assembly 6 and cable 1, so that cable 1 can only slide smoothly on the roller surface of the limiting roller 603 along its own axial direction, completely restricting the circumferential rotation and offset of cable 1 relative to the limiting roller 603. Thus, at the source stage of axial traction laying of cable, the circumferential torsion trend of cable is initially constrained, reducing the probability of torsion from the basic structure.

[0083] During the continuous axial traction laying of cable 1, if the cable is affected by factors such as ground friction, dragging deviation, and stress release, resulting in a circumferential torsion tendency, the torsional torque of the cable will be transmitted step by step through the clamping assembly 6 and the guide unit 4, driving the annular seat 301 and the toothed ring 302 fixed on the outside to simultaneously generate a circumferential rotation tendency, thereby driving the arc-shaped rack 305 meshing with the toothed ring 302 to rotate synchronously along the trajectory of the arc-shaped guide seat 304. This device relies on the combination of the gravity damping of the first weight block 309 and the elastic buffer damping of the first elastic element 310 to achieve graded adaptive torsion control, adapting to the anti-torsion requirements of different working conditions.

[0084] For construction conditions where fiber optic cables and high-precision signal lines have stringent requirements for torsional precision and where torsion is completely unacceptable, the reverse anti-torsion torque can be increased by increasing the self-weight of the first weight block 309. When the real-time rotational force of the arc-shaped rack 305 is less than the gravitational driving force of the first weight block 309, the reverse torque generated by the first weight block 309 can directly lock the rotation of the arc-shaped rack 305, completely suppressing the circumferential torsion of the gear ring 302 and cable 1, achieving zero-torsion cable laying, and fully meeting the laying standards for high-precision special cables. At the same time, the high-position symmetrical layout of the first weight block 309 can maximize the anti-torsion torque under the same counterweight, and the force is balanced on both sides, effectively reducing equipment vibration and offset, and improving the overall operational stability.

[0085] For applications such as ordinary power cables and large-diameter cables where slight torsion and deflection are permissible without damaging the internal structure or extending service life, a first elastic element 310 with an appropriate elastic coefficient can be selected to achieve flexible and controllable anti-torsion. When the real-time rotational force of the arc-shaped rack 305 exceeds the gravitational resistance of the first weight 309, the rigid locking structure fails. The first weight 309 moves with the arc-shaped rack 305 and actively compresses and stretches the corresponding first elastic element 310, causing the first elastic element 310 to undergo elastic deformation. This quickly releases the instantaneous torsional load on the cable, preventing component damage or cable breakage due to excessive structural rigidity. Simultaneously, the deformed first elastic element 310 generates a stable reverse elastic force, counteracting the torsional force of the arc-shaped rack 305 and balancing the torsional torque of the gear ring 302 and the cable 1.

[0086] The specific deformation coordination logic is as follows: During the rotation of the arc-shaped rack 305, the first elastic elements 310 on its left and right sides will simultaneously undergo differentiated deformation. One side is compressed, and the other side is stretched. The opposing resultant force generated by the two sets of elastic elements can limit the rotation stroke of the arc-shaped rack 305, strictly limiting the rotation angle of the gear ring 302 and the torsion angle of the cable 1 within the safe tolerance range of the cable. Operators can flexibly replace the first elastic elements 310 with different elastic coefficients according to the cable type and torsion tolerance parameters to adjust the rotation range of the arc-shaped rack 305, realize the control of the cable torsion angle, and take into account both the anti-torsion effect and the cable structure protection requirements.

[0087] In summary, this device relies on the gravitational torque of the first weight 309 and the elastic force of the first elastic element 310 to form a passive anti-torsion mechanism. Combined with the optimized mechanical performance through a high-position layout, it effectively suppresses and limits the torsion angle of the cable 1. The multi-point clamping of the clamping component 6 and the locking effect of the drive unit 5 ensure the coaxiality of the assembly and the stability of the force transmission. The adjustable structure can also adapt to cables 1 of different specifications. During traction operations, the limiting roller 603 can further enhance the anti-torsion effect. All components are coaxially arranged, and the movements are smooth and coordinated, making disassembly and maintenance convenient. The whole machine is a pure mechanical structure, requiring no external power supply and not being limited by power supply conditions, which can simplify construction and improve efficiency. The core components are protected by the cover component 9, which has good dustproof, waterproof, and impact resistance capabilities, reliable operation, and long service life. It is suitable for laying various special cables in complex working conditions such as in the field. Both the anti-torsion unit 3 and the linear anti-torsion part 8 use gravity and elastic force to suppress torsion. The arc structure is suitable for circumferential torsion, and the horizontal symmetrical structure is suitable for linear installation. They can be selected as needed and are applicable to a wide range of scenarios.

[0088] Example 2

[0089] This embodiment, based on the overall structure of Embodiment 1, replaces and optimizes the anti-torsion structure of the anti-torsion unit 3, adopting a linear anti-torsion structure to adapt to linear installation spaces and stable load conditions. The structures and assembly relationships of the remaining support components 2, rotating parts, guide units 4, drive units 5, clamping components 6, base components 7, and cover components 9 remain consistent with Embodiment 1, with only the anti-torsion functional structure being differentiated to achieve diverse adaptations to different working conditions. (See reference...) Figures 16 to 20 As shown, in this embodiment, the anti-torsion part of the anti-torsion unit 3 is a linear anti-torsion part 8, which is adapted to the linear displacement transmission mode, with uniform load distribution and higher operational stability. It is particularly suitable for regular linear installation conditions and cable laying scenarios with low vibration and high stability.

[0090] The linear anti-torsion component 8 includes a second support arm 801, a linear guide seat 802, a linear rack 803, a limiting platform 804, a straight cylinder 805, a second weight 806, and a second elastic element 807. The second support arm 801 is vertically arranged and its bottom end is fixedly mounted on the upper surface of the mounting platform 702, ensuring stable mounting reference and high verticality accuracy, providing reliable support for the overall linear anti-torsion structure. The linear guide seat 802 is horizontally fixedly mounted on the upper end of the second support arm 801, employing a horizontal linear groove structure to provide linear sliding guidance for the linear rack 803, restricting its displacement to only the horizontal direction, without vertical or radial offset.

[0091] The linear rack 803 is slidably assembled in the inner groove of the linear guide seat 802. The two are perfectly matched in shape and clearance, ensuring smooth sliding without jamming. Furthermore, the tooth structure of the linear rack 803 meshes with the gear ring 302, efficiently converting the circumferential rotation of the gear ring 302 into its own horizontal linear displacement motion, resulting in precise transmission and no power loss. The limiting platforms 804 are symmetrically and vertically arranged on the left and right sides of the second support arm 801, with their bottom ends fixed to the mounting platform 702. This symmetrical arrangement on both sides ensures balanced force distribution and strong support stability. Straight cylinders 805 are fixedly installed inside the limiting platforms 804 on both sides. The inner cavity of the straight cylinder 805 is designed as a standard straight cylinder structure, providing guidance for the linear expansion and contraction deformation of the second elastic element 807 and preventing deformation deviation and jamming problems.

[0092] The second counterweight 806 is symmetrically fixed at both ends of the linear rack 803. It uses high-density metal counterweight material, ensuring stable and undiminished self-weight load. The weight of each counterweight can be flexibly adjusted according to the torsional load requirements of the cable, typically fitting a counterweight range of 0.5kg-5kg. It is compatible with the first counterweight 309 system, facilitating easy replacement of components. The symmetrical counterweight structure ensures symmetrical force distribution and uniform load distribution throughout the linear rack 803, completely eliminating slippage and structural wear caused by unilateral loading, and improving the smoothness of linear transmission.

[0093] The second elastic element 807 is a linear precision telescopic spring component, adapted to the linear deformation trajectory of the inner cavity of the straight cylinder 805. One end is fixedly installed at the top of the inner cavity of the straight cylinder 805, and the other end slides linearly along the inner cavity of the straight cylinder 805, with the sliding end stably connected to the end of the linear rack 803. In this embodiment, the elastic coefficient of the second elastic element 807 can be selected as needed, with a conventional elastic coefficient range of 5N / mm-50N / mm, which is common to the parameter system of the first elastic element 310: a low elastic coefficient is suitable for small-amplitude buffering and anti-torsion conditions of high-precision cables, while a high elastic coefficient is suitable for strong anti-torsion conditions of heavy-load cables. By replacing the second elastic element 807 with different elastic coefficients, the horizontal displacement stroke of the linear rack 803 can be adjusted, thereby realizing the control of the cable torsion angle.

[0094] The working logic of this structure is as follows: the linear rack 803 can completely follow the meshing rotation of the gear ring 302 to generate horizontal linear displacement, and adaptively switch the anti-torsion mode according to the real-time force magnitude to achieve complete torsion suppression or controllable deflection within a limited angle range for the cable 1, adapting to construction conditions with linear installation space and stable load.

[0095] Specifically, when the cable 1 is pulled and laid, causing a circumferential twisting tendency, it drives the gear ring 302 to rotate synchronously, thereby causing the meshing linear rack 803 to generate a horizontal linear displacement along the inner cavity of the linear guide seat 802. The device relies on the gravitational resistance of the second weight 806 and the elastic resistance of the second elastic element 807 to form a linear damping balance system, achieving graded torque control: when the real-time moving driving force of the linear rack 803 is less than the gravitational resistance of the second weight 806, the counterweight resistance of the second weight 806 can directly lock the horizontal displacement of the linear rack 803, completely blocking the rotation of the gear ring 302, thereby completely suppressing the circumferential twisting of the cable 1 and achieving zero-twist laying. This working condition is suitable for the stringent anti-twist requirements of optical fibers, precision signal lines, etc. The locking resistance can be further increased by increasing the self-weight of the second weight 806 to achieve high-strength complete anti-twist suppression.

[0096] When the real-time moving driving force of the linear rack 803 exceeds the constant resistance of the second weight 806, the rigid locking fails. The linear rack 803 drives the second weight 806 to move horizontally synchronously, actively causing the second elastic element 807 on the corresponding side to undergo compression or tensile elastic deformation, thereby quickly releasing the instantaneous torsional load on the cable and avoiding structural rigidity overload damage. At the same time, the deformed second elastic element 807 generates a stable reverse elastic force, which counteracts the displacement driving force of the linear rack 803, balances the torsional torque of the gear ring 302 and the cable 1, and achieves flexible buffering and anti-torsion.

[0097] The specific deformation coordination logic is as follows: When the linear rack 803 is subjected to force and undergoes horizontal displacement, the second elastic elements 807 on its left and right sides will simultaneously undergo differentiated deformation: the second elastic element 807 on one side along the moving direction of the linear rack 803 will be compressed and contracted, while the second elastic element 807 on the other side will be stretched and extended. Taking the linear rack 803 moving to the right of the equipment as an example, the second elastic element 807 on the right side will be compressed, while the second elastic element 807 on the left side will be stretched and extended. The opposing resultant forces generated synchronously by the two sets of second elastic elements 807 limit the maximum horizontal displacement stroke of the linear rack 803, thereby constraining the circumferential rotation angle of the gear ring 302, strictly controlling the torsion amplitude of the cable 1 within the safe tolerance range, and avoiding problems such as internal core breakage, insulation layer damage, and transmission performance degradation caused by excessive cable torsion.

[0098] This embodiment's structure is adapted to construction conditions that allow for slight flexible deflection of the cable. This slight elastic deformation will not damage the cable's internal mechanical structure or shorten its lifespan. During construction, the second elastic element 807 with different elastic coefficients can be flexibly replaced according to the cable model, outer diameter specifications, and torsional performance parameters. This allows for adjustment of the movement range of the linear rack 803, achieving precise and adaptive control over the rotation angle of the gear ring 302 and the torsion angle of the cable 1. This linear anti-torsion structure features uniform overall load distribution, minimal operational vibration, and higher stability. It is suitable for regular linear installation spaces and complements the arc-shaped anti-torsion structure of Embodiment 1. It can be flexibly selected based on the site's spatial configuration, torsional load magnitude, and cable precision requirements, achieving diversified and all-scenario adaptability of the anti-torsion function.

[0099] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A source-end suppression type cable anti-twist laying device, used to suppress the twisting generated during cable (1) laying, characterized in that: include: Support component (2); The anti-torsion unit (3) includes a rotating part and an anti-torsion part; the rotating part of the anti-torsion unit (3) is rotatably disposed relative to the support assembly (2) and rotates with the circumferential rotation of the cable (1); the anti-torsion part of the anti-torsion unit (3) inhibits the rotating part of the anti-torsion unit (3) from over-rotating. The guide unit (4) is connected to the rotating part of the anti-torsion unit (3); The drive unit (5) is rotatably disposed within the guide unit (4); The clamping assembly (6) is evenly distributed in multiple sets along the circumference of the cable (1), and is controlled by the guide unit (4) and the drive unit (5) to clamp the cable (1) on the circumferential sidewall. The anti-torsion unit (3) suppresses and limits the circumferential torsion of the rotating part of the anti-torsion unit (3), the guide unit (4), the drive unit (5), the clamping assembly (6) and the cable (1).

2. The source-end suppression type cable anti-twist laying device according to claim 1, characterized in that: The support component (2) includes: Support (201) is installed in the vertical direction; The support ring (202) is fixed on the support (201) and is configured as a hollow ring structure.

3. The source-end suppression type cable anti-twist laying device according to claim 2, characterized in that: The rotating part of the anti-torsion unit (3) includes: The annular seat (301) is coaxially and rotatably disposed inside the support ring (202); The gear ring (302) is coaxial and fixed to the outer wall of the annular seat (301).

4. The source-end suppression type cable anti-twist laying device according to claim 3, characterized in that: The anti-torsion part of the anti-torsion unit (3) is an arc-shaped anti-torsion part, which includes: The first support arm (303) is set in the vertical direction; An arc-shaped guide seat (304) is fixed on the first support arm (303) and is configured as an arc-shaped structure; The arc-shaped rack (305) is slidably disposed in the arc-shaped guide seat (304), and is adapted to the arc of the arc-shaped guide seat (304). The arc-shaped rack (305) is meshed with the gear ring (302). Mounting arms (306) are symmetrically and vertically arranged on both sides of the first support arm (303); The curved cylinder (307) is fixedly mounted on the top of the mounting arm (306). The inner cavity of the curved cylinder (307) is configured as an arc-shaped cylindrical structure, and the center of the curved cylinder (307) is concentric with the center of the arc-shaped rack (305). Connecting hooks (308) are symmetrically and fixedly disposed at both ends of the arc-shaped rack (305); The first weight (309) is fixed on the connecting hook (308); The first elastic element (310) has one end fixed to the top of the inner cavity of the bent cylinder (307), and the other end is slidably disposed along the inner cavity of the bent cylinder (307), and the first weight (309) is connected to the other end of the first elastic element (310); The arc-shaped rack (305) meshes and rotates with the toothed ring (302), and according to the magnitude of the force, it suppresses the torsion of the cable (1) or causes it to deflect within a limited angle range.

5. The source-end suppression type cable anti-twist laying device according to claim 4, characterized in that: The guiding unit (4) includes: An annular guide seat (401) is coaxially fixed on the annular seat (301) and is located on the side away from the gear ring (302); The clearance groove (402) and the sliding groove (403) are evenly provided in multiple sets along the circumferential sidewall of the annular guide seat (401), and the clearance groove (402) and the sliding groove (403) are staggered. A strip seat (404) is fixed to the circumferential side wall of the annular guide seat (401). The strip seat (404) has an arc-shaped groove along its own length direction, and the center of the arc-shaped groove is concentric with the center of the outer side wall of the annular guide seat (401). Multiple sets of slide rails (405) are vertically fixed along the circumferential sidewall of the annular guide seat (401); The slide table (406) is slidably sleeved on the slide rail (405).

6. The source-end suppression type cable anti-twist laying device according to claim 5, characterized in that: The driving unit (5) includes: An annular ring (501) is coaxially disposed within the annular guide seat (401); Multiple sets of connecting rods (502) are rotatably arranged along the circumferential sidewall of the annular ring (501), and the other end of each set of connecting rods (502) is rotatably connected to the slide table (406); Multiple sets of sliding pins (503) are fixed along the circumferential sidewall of the annular ring (501), and each set of sliding pins (503) is slidably embedded in the inner cavity of the corresponding groove (403); A stud (504) is threaded through one of the sets of sliding pins (503), and the stud (504) penetrates the inner cavity of the arc-shaped groove of the strip seat (404); The nut (505) is threaded and locked to the end of the stud (504) to lock the relative position of the sliding pin (503) and the strip seat (404); The connecting rod (502) is arranged at an angle relative to the center line of the slide rail (405) in the length direction.

7. The source-end suppression type cable anti-twist laying device according to claim 6, characterized in that: Each set of clamping components (6) includes: The connecting seat (601) is detachably disposed on the side wall of the slide (406); Mounting bracket (602) is fixed to the end of the connecting seat (601); The limiting roller (603) is rotatably disposed within the mounting bracket (602), and the limiting roller (603) is provided with a straight section in the middle and an expansion section extending symmetrically to both sides, and the expansion section of the limiting roller (603) rolls against the circumferential sidewall of the cable (1). The cable (1) is coaxially threaded through the annular seat (301), the annular guide seat (401), and the annular ring (501) in sequence, and the circumferential rotation of the cable (1) is restricted by the circumferentially arranged limiting roller (603).

8. The source-end suppression type cable anti-twist laying device according to claim 5, characterized in that: It also includes a base assembly (7), which comprises: The base frame (701) is set in two corresponding groups; The mounting platform (702) is fixed on the two sets of base frames (701); The support (201), the first support arm (303) and the mounting arm (306) are respectively fixed on the mounting platform (702).

9. The source-end suppression type cable anti-twist laying device according to claim 8, characterized in that: It also includes a cover assembly (9), which includes: The outer cover (901) is fixed on the mounting platform (702); The door (902) is rotatably and openably disposed on the side wall of the outer cover (901), and the position of the door (902) corresponds to the position of the strip seat (404); A through groove (903) is formed through the front and rear side walls of the outer cover (901) for the cable (1) to pass through the inner cavity of the through groove (903).

10. The source-end suppression type cable anti-twist laying device according to claim 3, characterized in that: The anti-torsion part of the anti-torsion unit (3) is a linear anti-torsion part (8), which includes: The second support arm (801) is set in the vertical direction; A linear guide seat (802) is fixed on the second support arm (801); A straight rack (803) is slidably disposed in the straight guide seat (802) and adapted to the shape of the straight guide seat (802), and the straight rack (803) is meshed with the gear ring (302); The limiting platform (804) is symmetrically and vertically arranged on both sides of the second support arm (801); Straight cylinders (805) are respectively fixed inside the limiting platform (804), and the inner cavity of the straight cylinder (805) is configured as a straight cylinder structure; The second weight (806) is symmetrically and fixed at both ends of the straight rack (803); The second elastic element (807) has one end fixed in the inner cavity of the straight cylinder (805) and the other end slidably disposed along the inner cavity of the straight cylinder (805), and the linear toothed rack (803) is connected to the other end of the second elastic element (807); The linear rack (803) meshes and rotates with the gear ring (302), and according to the magnitude of the force, it suppresses the torsion of the cable (1) or causes it to deflect within a limited angle range.

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