High performance polyethylene cable for external protection

Abstract

The utility model relates to polyethylene cable protection technical field, concretely relates to a high performance polyethylene cable is with external protective sheath, including sheath body, the both sides of sheath body all are provided with the magic tape of adaptation, the outside of sheath body is provided with the outer layer, the one side of outer layer is provided with the protective layer, the side away from the outer layer of protective layer is provided with the lock rope inner layer, the sheath body whole is woven into shape, and three sections are arranged in all, are used for in the round of coating cable and are wrapped. Compared with the prior art, by setting up the lock rope inner layer, prevent the lock rope inner layer whole collapse, still can keep effective locking shape and the state of sticking under the cable long -term tension, bending and repeated winding working condition, thereby improve the constraint stability of sheath to cable, anti -slippage ability and overall fatigue life.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene cable protection technology, and in particular to an external protective sleeve for high-performance polyethylene cables. Background Technology

[0002] High-performance polyethylene cables are widely used in marine mooring, engineering hoisting, and rescue towing due to their high specific strength, low density, and excellent corrosion resistance. However, in actual use, the outer surface of the cable is in constant contact with the deck, guide hole, pulley edge, or rock edge, which can easily cause wear, flattening, and local cuts. Therefore, it is generally necessary to use an external protective sleeve to prevent wear and protect the cable.

[0003] In existing technologies, for example, Chinese patent document CN2725626Y, a cable protection sleeve, proposes using a flexible band to cover the cable and tightening it around the cable using ties, Velcro, or zippers, thus forming a removable abrasion-resistant layer at the point where the cable contacts the outside environment. This solves the problem of traditional ropes being used directly exposed and lacking abrasion-resistant protection. Another example is Chinese patent document CN105970705A, a cable sheath and cable protection method, which proposes a rectangular mesh sheath that uses connectors to sew two opposite long sides into a cylindrical sheath. This woven sheath provides a certain degree of abrasion resistance and protection to the cable surface, and its unfoldable and rollable structure simplifies installation and storage. However, in practical applications, traditional sheaths often use a single-layer woven band or a simple cylindrical sheath structure with relatively uniform thickness and stiffness distribution. When subjected to lateral compression, repeated winding, or localized pressure, the cross-section tends to flatten and the shape becomes out of round. Either the overall material is too soft to support the cable cross-section, or it is thickened and hardened, affecting the cable's flexible bending performance. It is difficult to meet the comprehensive requirements of compression resistance and flexible bending. On the other hand, most inner surfaces of the sheath are nearly smooth cylindrical surfaces or simple braided textures, which mainly rely on surface friction to limit the relative sliding of the cable. This cannot effectively suppress the axial creep and circumferential rolling of high-performance polyethylene cables under long-term tension, vibration and variable load conditions. It is also difficult to achieve a balance between "rigid locking" and "flexible bonding". Problems such as either not locking firmly and the cable moving inside the sheath, or excessive local indentation and damage to the core fiber are likely to occur. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a high-performance polyethylene cable outer protective sleeve to solve the problems of traditional sleeves, which have a single overall thickness and stiffness distribution, making it difficult to simultaneously take into account both compression resistance and flexible bending. Furthermore, their nearly smooth inner surface mainly relies on friction for limiting, which leads to the cable easily moving around inside the sleeve or being subjected to excessive local pressure, thus damaging the core fiber.

[0005] To achieve the above objectives, this utility model provides an external protective sleeve for high-performance polyethylene cables, comprising a sleeve body, with matching Velcro straps on both sides of the sleeve body, an outer layer on the outer side of the sleeve body, a protective layer on one side of the outer layer, and a locking inner layer on the side of the protective layer away from the outer layer. The sleeve body is woven in its entirety and has a long strip-shaped closed structure for wrapping the cable in a circular shape. Preferably, a plurality of flexible plates are equidistantly arranged in the outer layer, each of the flexible plates having a locking strip at both ends, and an I-beam reinforcing strip between the flexible plates.

[0006] Preferably, the I-beam reinforcing strip is formed by interlacing a first reinforcing filament of aramid fiber and a second reinforcing filament of nylon fiber. The first reinforcing filament is arranged radially along the sheath body to form a vertical web, and the second reinforcing filament is spread out on both sides of the web along the outer layer to form flanges, so that the cross-section of the I-beam reinforcing strip is I-shaped, which is used to improve the circumferential stiffness and anti-flattening ability of the sheath body while maintaining the overall softness and bendability.

[0007] Preferably, the protective layer has a plurality of longitudinal ribs arranged laterally and a plurality of circumferential ribs arranged longitudinally, and the longitudinal ribs and circumferential ribs are arranged in a mesh-like pattern.

[0008] Preferably, the inner layer of the lock rope is woven from two sets of first lock rope wires distributed circumferentially and a second lock rope wire located inside the two sets of first lock rope wires.

[0009] Preferably, the first locking cord wire is disposed on the outer side of the inner layer of the locking cord, forming an Ω-shaped "bow frame", and the second locking cord wire fills the interior of the two sets of Ω-shaped first locking cord wires.

[0010] Preferably, a plurality of support bars are provided on the side of the two first locking cords away from the second locking cord.

[0011] The beneficial effects of this utility model are: 1. This high-performance polyethylene cable outer protective sleeve features a locking inner layer that forms a composite cross-section of "rigid locking + flexible fit" at the cable contact interface: two sets of first locking cords on the outer side interweave to form an Ω-shaped arch frame, providing stable radial support and locking stiffness, and inhibiting the cable from bulging and rolling within the sleeve; the interior and edges are filled with soft second locking cords, forming a flexible groove covering band that conforms to the slight unevenness of the cable surface, absorbs impact, increases friction and coverage area, and significantly reduces axial slippage; the outer support bar provides back support to the Ω-shaped frame, preventing the entire locking inner layer from collapsing. Even under long-term tension, bending, and repeated winding conditions, it can maintain an effective locking shape and fit, thereby improving the sleeve's constraint stability, anti-slip capability, and overall fatigue life of the cable.

[0012] 2. This high-performance polyethylene cable outer protective sleeve features an outer protective layer, an inner soft plate, and locking strips at both ends providing a snug fit, buffering, and end reinforcement. The I-beam reinforcing strips, with their inner hard (aramid web) and outer soft (nylon flange) I-shaped ribs, significantly enhance resistance to flattening, compression, and bending in the circumferential direction while maintaining overall bending flexibility. The longitudinal and circumferential ribs within the protective layer form a crisscrossing mesh skeleton, providing both axial and circumferential shaping and support, evenly distributing external forces across multiple small units. This ensures the sheath's cross-sectional roundness and shape stability while allowing for localized micro-bending to buffer impacts. This achieves a combined effect of outer layer abrasion and compression resistance and protective layer energy absorption and shaping constraint, thus better maintaining the cable's cross-sectional shape and stress state under long-term repeated bending, winding, and pressure conditions, improving overall durability and safety reliability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of the sheath body of this utility model; Figure 2 This is a schematic diagram of the internal structure of each layer of the sheath body of this utility model; Figure 3 This is a schematic diagram of the outer layer structure of this utility model; Figure 4 This is a schematic diagram of the protective layer structure of this utility model; Figure 5 This is a schematic diagram of the inner layer structure of the locking rope of this utility model.

[0015] The diagram is marked as follows: 1. Sheath body; 2. Velcro; 3. Outer layer; 4. Protective layer; 5. Inner layer of locking rope; 6. Soft plate; 7. I-beam reinforcing strip; 8. Locking strip; 9. Longitudinal rib; 10. Circumferential rib; 11. First locking rope wire; 12. Second locking rope wire; 13. Support bar. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0017] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] like Figures 1 to 5 As shown, a high-performance polyethylene cable outer protective sleeve includes a sleeve body 1, with matching Velcro 2 on both sides of the sleeve body 1, an outer layer 3 on the outside of the sleeve body 1, a protective layer 4 on one side of the outer layer 3, and a locking inner layer 5 on the side of the protective layer 4 away from the outer layer 3. The sleeve body 1 is woven as a whole and has a long strip-shaped closed structure for wrapping the cable in a circular shape. The outer layer 3 is used to withstand external friction, impact and environmental wear. The protective layer 4, as the middle load-bearing layer, plays the role of energy absorption, buffering and anti-compression deformation. The innermost locking rope inner layer 5 is directly attached to the cable, providing anti-slip, shaping and stable support. The whole structure adopts a long strip-shaped closed structure with braiding. It can be flexibly bent when covering the cable, but can form a complete circular sleeve when closed. With the Velcro 2 on both sides, it can be quickly closed and disassembled, which is convenient for on-site assembly, maintenance and reuse. The functional division of the three layers makes the sheath perform better in terms of wear resistance, compression resistance, torsion resistance and displacement resistance. At the same time, because the locking rope inner layer 5 is tightly attached to the cable, it can reduce the relative slippage of the cable during operation, reduce wear and heat accumulation, improve the overall service life and stress stability of the cable. The overall structure can bend with the cable without losing flexibility, and combines protection, reliability and ease of use.

[0019] Furthermore, such as Figure 2 , 3As shown, several flexible plates 6 are equidistantly arranged inside the outer layer 3. Locking strips 8 are provided at both ends of the flexible plates 6. I-beam reinforcing strips 7 are provided between the flexible plates 6. The I-beam reinforcing strips 7 are formed by interlacing the first reinforcing filament of aramid fiber and the second reinforcing filament of nylon fiber. The first reinforcing filament is arranged radially along the sheath body 1 to form a vertical web. The second reinforcing filament is spread out on both sides of the web along the outer layer 3 to form a flange, so that the cross-section of the I-beam reinforcing strip 7 is I-shaped. This is used to improve the circumferential stiffness and anti-flattening ability of the sheath body 1 while maintaining the overall softness and bendability. The inner side is provided with a certain amount of cushioning and fitting capacity by several equidistant flexible plates 6. The locking strips 8 at both ends position and reinforce the ends of the flexible plates 6 to prevent them from warping, curling, or misaligning during long-term bending and pressure. The I-beam reinforcing strips 7 arranged between the flexible plates 6 are woven from the first reinforcing yarn of aramid fiber and the second reinforcing yarn of nylon fiber. The first reinforcing yarn of aramid fiber is arranged radially along the sheath body 1 to form a vertical web, which bears the main support and pressure resistance. The second reinforcing yarn of nylon fiber spreads out along the outer layer 3 on both sides of the web to form flanges. This design expands the stress-bearing area and increases the circumferential support stiffness while maintaining a certain degree of flexibility. The cross-section of the I-beam reinforcement strip 7 is I-shaped, which significantly enhances its resistance to circumferential flattening, compression, and folding. At the same time, it does not make the entire sheath too stiff, and it can still bend with the cable without obvious creases or local "bending angles". Thus, under external impact, clamping and pressing, or cable winding conditions, it provides more reliable circumferential support and shape retention for the high-performance polyethylene cable, thereby enabling the outer layer 3 to form a structure of "flexibility with rigidity and zoned support" while maintaining flexibility.

[0020] Furthermore, such as Figure 2 , 4 As shown, the protective layer 4 has several longitudinal ribs 9 arranged horizontally and several circumferential ribs 10 arranged vertically. The longitudinal ribs 9 and the circumferential ribs 10 are interwoven in a mesh pattern. The protective layer 4 forms a crisscrossing mesh-like skeleton structure at the intermediate load-bearing layer. Several longitudinal ribs 9 arranged in the transverse direction and circumferential ribs 10 arranged in the longitudinal direction work together to provide support and shape constraint in both axial and circumferential directions. This creates a more uniform dispersion effect on external compression, collision or entanglement tension, avoiding local collapse, flattening or creases caused by stress concentration, and maintaining the overall roundness and cross-sectional shape stability of the sheath body 1. On the other hand, the mesh-like skeleton divides the protective layer 4 into multiple relatively independent small units, giving it the characteristics of "overall anti-deformation and local micro-bending" when bearing load. While enhancing the resistance to compression, torsion and extrusion, it does not excessively sacrifice flexibility and can still bend and spread with the cable. Thus, under conditions such as repeated bending, winding and local compression of the cable, it provides more reliable intermediate support and buffer energy absorption for the cable, improving overall durability and service life.

[0021] Furthermore, such as Figure 2 , 5 As shown, the inner layer 5 of the lock rope is woven together by two sets of first lock rope wires 11 distributed in a circumferential direction and second lock rope wires 12 located inside the two sets of first lock rope wires 11. The first lock rope wires 11 are set on the outside of the inner layer 5 of the lock rope to form an Ω-shaped "bow frame". The second lock rope wires 12 are filled inside the two sets of Ω-shaped first lock rope wires 11. Several support bars 13 are provided on the side of the two first lock rope wires 11 away from the second lock rope wires 12. In this embodiment, the first locking cord filament 11 is made of a high-strength, low-elongation fiber material, such as high-strength polyester fiber, aramid fiber, or glass fiber reinforced composite fiber, to provide support and locking stiffness for the Ω-shaped arch frame; the second locking cord filament 12 is made of a soft and elastic material, such as thermoplastic elastomer-coated fiber filament, polyurethane elastic fiber, or nylon elastic fiber, to form a buffer filling layer inside and at the edges of the Ω shape, improving the fit with the surface of the high-performance polyethylene cable and absorbing local impacts; the support bar 13 is preferably made of engineering plastic or metal wire with high hardness, such as polyamide, polyoxymethylene, or stainless steel wire, to provide support for the two sets of first locking cord filaments 11 when the cable is under tension and bending, preventing the inner layer 5 of the locking cord from collapsing as a whole; The inner layer 5 of the locking rope forms a composite cross-sectional structure with both rigid locking and flexible bonding at the interface with the high-performance polyethylene cable. Two sets of circumferentially distributed first locking rope wires 11 are located on the outside and interlaced to form an Ω-shaped arched frame. With the high strength and low elongation of the fiber material, they provide stable radial support and locking stiffness, limiting the radial bulging and circumferential rolling of the cable inside the sheath. The second locking rope wires 12 are filled with soft elastic material inside the Ω-shape and at the edges, forming a continuous or discontinuous flexible groove covering band on the outer surface of the cable. This band can conform to the microscopic unevenness of the cable surface and absorb local impact. The impact ensures that the contact surface does not harshly damage the rope core, while effectively increasing the friction and coverage area, thereby reducing the axial slippage of the cable within the sheath. At the same time, the support bars 13 set on the outside of the two first locking cord wires 11 are made of high-hardness materials such as engineering plastics or metal wires. When the cable is under tension, bending, or repeated winding, they provide back support for the Ω-shaped bow frame, preventing the inner layer 5 of the locking cord from collapsing and deforming. This allows the inner layer 5 of the locking cord to maintain an effective locking shape and fit under long-term load conditions, thereby improving the sheath's constraint stability, anti-slip capability, and overall fatigue life of the cable.

[0022] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0023] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-performance polyethylene cable outer protective sleeve, comprising a sleeve body (1), characterized in that, Both sides of the sheath body (1) are provided with matching Velcro (2), the outer side of the sheath body (1) is provided with an outer layer (3), one side of the outer layer (3) is provided with a protective layer (4), and the side of the protective layer (4) away from the outer layer (3) is provided with a locking rope inner layer (5). The sheath body (1) is woven in whole, and the sheath body (1) is a long strip-shaped closed structure used to wrap the cable in a circle.

2. The external protective sleeve for high-performance polyethylene cables according to claim 1, characterized in that, The outer layer (3) has several flexible plates (6) evenly spaced inside. Both ends of the flexible plates (6) are provided with locking strips (8), and I-beam reinforcing strips (7) are provided between the flexible plates (6).

3. The external protective sleeve for high-performance polyethylene cables according to claim 2, characterized in that, The I-beam reinforcing strip (7) is formed by interlacing the first reinforcing filament of aramid fiber and the second reinforcing filament of nylon fiber. The first reinforcing filament is arranged radially along the sheath body (1) to form a vertical web, and the second reinforcing filament is spread along the outer layer (3) on both sides of the web to form a flange, so that the cross-section of the I-beam reinforcing strip (7) is I-shaped, which is used to improve the circumferential stiffness and anti-flattening ability of the sheath body (1) while maintaining the overall softness and bendability.

4. The external protective sleeve for high-performance polyethylene cables according to claim 1, characterized in that, The protective layer (4) has several longitudinal ribs (9) arranged laterally inside and several circumferential ribs (10) arranged longitudinally. The longitudinal ribs (9) and circumferential ribs (10) are interwoven in a mesh pattern.

5. The external protective sleeve for high-performance polyethylene cables according to claim 1, characterized in that, The inner layer (5) of the lock rope is woven together by two sets of first lock rope wires (11) distributed in a circumferential direction and second lock rope wires (12) located inside the two sets of first lock rope wires (11).

6. The external protective sleeve for high-performance polyethylene cables according to claim 5, characterized in that, The first locking cord wire (11) is located on the outside of the inner layer (5) of the locking cord, forming an Ω-shaped bow frame, and the second locking cord wire (12) is filled inside the two sets of Ω-shaped first locking cord wires (11).

7. The external protective sleeve for high-performance polyethylene cables according to claim 6, characterized in that, Several support bars (13) are provided on the side of the two first locking cords (11) away from the second locking cord (12).

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