Cable capable of preventing sheath from being damaged
By employing a composite structure of aramid fiber, galvanized metal layer, and polyethylene layer, along with a modular splicing design, the problem of cable sheath damage under complex working conditions is solved, achieving efficient and convenient cable sheath protection and repair.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-31
AI Technical Summary
Existing cables are susceptible to damage from mechanical impacts, rodent bites, or acidic/alkaline corrosion under complex operating conditions. Traditional repair methods are prone to detachment or exacerbate insulation aging, and cannot effectively address targeted repairs after localized damage.
It adopts a composite protection of aramid fiber layer, galvanized metal layer and polyethylene layer, combined with sliding protective sleeve and wedge block friction positioning, and uses plug rod and inclined surface to realize modular splicing to form a continuous protective belt, which has the functions of rapid coverage and self-repair.
It significantly improves the tensile strength, compressive strength, bite resistance and corrosion resistance of cables, ensures cable heat dissipation, enables tool-free convenient maintenance and length-adaptive repair, reduces construction difficulty and cost, and extends service life.
Smart Images
Figure CN224067451U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable technology, and more specifically, to a cable resistant to outer sheath damage. Background Technology
[0002] When cables operate under complex conditions for extended periods, their outer sheaths are susceptible to mechanical impacts, rodent bites, or corrosion from acidic or alkaline media, leading to localized damage or even exposure of the internal conductors. Existing protection solutions primarily enhance damage resistance by increasing the thickness of the outer sheath or adding a metal armor layer. However, such designs increase the weight per unit length of the cable, significantly reducing laying efficiency and failing to address the issue of targeted repair after localized damage.
[0003] Currently, temporary repair methods for cable damage mostly involve wrapping with insulating tape or heat shrink tubing. However, the adhesive of the tape is easily affected by temperature differences and oil stains, causing it to fall off. Heat shrink tubing, on the other hand, requires high-temperature baking and must be tightly attached to the cable surface, hindering the dissipation of internal heat and exacerbating the risk of insulation aging. Therefore, in response to the above technical problems, a cable with a damaged outer sheath is proposed here. Utility Model Content
[0004] The purpose of this utility model is to provide a cable that is protected against damage to its outer sheath. It adopts a composite protection of aramid fiber layer, galvanized metal layer and polyethylene layer to improve the overall tensile, compressive and corrosion resistance of the cable. Moreover, through the elastic self-locking of the sliding protective sleeve and the friction positioning of the wedge block, it can quickly cover the damaged area for protection and maintain heat dissipation. In addition, the modular splicing is promoted by the cooperation of the plug and the inclined surface, and after stretching and locking, a continuous protective strip is formed, realizing convenient maintenance without tools and length adaptive repair.
[0005] This utility model is achieved through the following technical solution:
[0006] A cable resistant to outer sheath damage includes an outer sheath and three sets of cable conductors arranged in a ring inside. A shielding sleeve is fixedly connected to the outside of each cable conductor. An inner sheath is provided inside the outer sheath. Insulating material is filled between the inner side of the inner sheath and the shielding sleeve. A performance-enhancing mechanism is installed between the inner sheath and the outer sheath. Multiple sets of transversely arranged sliding sleeves are slidably connected to the outside of the outer sheath. Two sets of symmetrically arranged connecting plates are installed outside the sliding sleeves. A clamping mechanism is installed between the connecting plates and the sliding sleeves. An installation groove is formed on the outside of the sliding sleeve. A protective net is fixedly connected to the inside of the installation groove. A sliding groove is formed on the outside of the sliding sleeve. A wedge block is fixedly connected to one side of each connecting plate and slidably connected to the inside of the sliding groove. The end of the wedge block abuts against the outside of the outer sheath. A splicing mechanism is installed on the outside of the sliding sleeve.
[0007] Preferably, the performance enhancement mechanism includes a tensile stress dispersion layer, a compressive anti-chewing layer, and a corrosion-resistant isolation layer. The tensile stress dispersion layer is fixedly connected to the outside of the inner sheath, the compressive anti-chewing layer is fixedly connected to the outside of the tensile stress dispersion layer, and the corrosion-resistant isolation layer is fixedly connected between the compressive anti-chewing layer and the outer sheath.
[0008] Preferably, the tensile stress dispersion layer is woven from aramid fibers, the outer surface of the compression-resistant and anti-chewing layer is galvanized, and the anti-corrosion isolation layer is made of polyethylene material.
[0009] Preferably, the clamping mechanism includes a tension spring and a telescopic rod, both of which are fixedly connected between the connecting plate and the sliding sleeve. There are two sets of tension springs and telescopic rods installed at both ends of the connecting plate, with the tension springs sleeved on the outside of the telescopic rods.
[0010] Preferably, the splicing mechanism includes a slot, a rod, and a positioning hole. The slot is located at one end of the sliding sleeve and is connected to the sliding groove. The end of the wedge block has an inclined surface that matches the slot.
[0011] Preferably, the insertion rod is fixedly connected to the other end of the sliding sleeve, and the positioning hole is opened on the outside of the insertion rod.
[0012] Preferably, the insertion rod matches the slot, and the positioning hole matches the wedge block.
[0013] The technical solution of this utility model has at least the following beneficial effects:
[0014] This utility model proposes a cable designed to prevent outer sheath damage. Through a composite structure of an aramid fiber layer, a galvanized metal layer, and a polyethylene layer, it significantly improves the cable's tensile strength, compressive strength, bite resistance, and corrosion resistance, reducing the risk of outer sheath damage. When the outer sheath is damaged, a sliding protective sleeve quickly covers the damaged area through elastic self-locking. Wedge-shaped blocks with inclined surfaces provide friction positioning, and a protective mesh helps block foreign objects while maintaining cable heat dissipation, avoiding localized overheating caused by traditional tape wrapping. For long-distance damage, multiple protective sleeves are seamlessly spliced together by the cooperation of a plug and an inclined surface, forming a continuous protective strip after stretching and locking. The connecting plate can be pressed and disassembled without tools, simplifying the maintenance process. This design combines lightweight and adaptive characteristics, flexibly adapting to different damage lengths and cable bending states, reducing the waste of replacing entire sections, extending service life, and lowering construction difficulty and maintenance costs, achieving efficient and long-lasting dynamic protection of the cable sheath. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2This is a cross-sectional view of the cable structure of this utility model;
[0017] Figure 3 for Figure 2 Enlarged view of A in the middle;
[0018] Figure 4 for Figure 2 Enlarged view of B in the middle;
[0019] Figure 5 for Figure 1 Enlarged view of C;
[0020] Figure 6 This is a partial structural front sectional view of the present invention;
[0021] Figure 7 for Figure 6 Enlarged view of D;
[0022] Figure 8 for Figure 6 Enlarged view of E in the middle;
[0023] Reference numerals: 1. Outer sheath; 2. Cable conductor; 3. Shielding sleeve; 4. Inner sheath; 5. Insulating material; 6. Tensile stress dispersion layer; 7. Compression-resistant and anti-chewing layer; 8. Corrosion-resistant isolation layer; 9. Sliding sleeve; 10. Connecting plate; 11. Tension spring; 12. Telescopic rod; 13. Slide groove; 14. Wedge block; 15. Mounting groove; 16. Protective net; 17. Slot; 18. Insert rod; 19. Positioning hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-8This utility model proposes a cable with a resistant outer sheath, comprising an outer sheath 1 and three sets of cable conductors 2 arranged in a ring inside. A shielding sleeve 3 is fixedly connected to the outside of the cable conductors 2. An inner sheath 4 is provided on the inner side of the outer sheath 1. An insulating material 5 is filled between the inner side of the inner sheath 4 and the shielding sleeve 3. A performance enhancement mechanism is installed between the inner sheath 4 and the outer sheath 1. Multiple sets of horizontally arranged sliding sleeves 9 are slidably connected to the outside of the outer sheath 1. Two sets of symmetrically arranged connecting plates 10 are installed on the outside of the sliding sleeves 9. A clamping mechanism is installed between the connecting plates 10 and the sliding sleeves 9. An installation groove 15 is opened on the outside of the sliding sleeves 9. A protective net 16 is fixedly connected to the inner side of the installation groove 15. A sliding groove 13 is opened on the outside of the sliding sleeves 9. A wedge block 14 is fixedly connected to one side of the connecting plate 10, and the wedge block 14 is slidably connected to the inner side of the sliding groove 13. The end of the wedge block 14 abuts against the outside of the outer sheath 1. A splicing mechanism is installed on the outside of the sliding sleeves 9.
[0026] The performance enhancement mechanism includes a tensile stress dispersion layer 6, a compressive anti-chewing layer 7, and an anti-corrosion isolation layer 8. The tensile stress dispersion layer 6 is fixedly connected to the outside of the inner sheath 4, the compressive anti-chewing layer 7 is fixedly connected to the outside of the tensile stress dispersion layer 6, and the anti-corrosion isolation layer 8 is fixedly connected between the compressive anti-chewing layer 7 and the outer sheath 1.
[0027] The tensile stress dispersion layer 6 is woven from aramid fibers. The woven structure evenly disperses the internal mechanical stress and prevents local breakage. The compressive and anti-gnawing layer 7 has a galvanized outer surface. The galvanization treatment prevents rodents or tools from scratching and damaging it. The anti-corrosion isolation layer 8 is made of polyethylene material.
[0028] The clamping mechanism includes a tension spring 11 and a telescopic rod 12. The tension spring 11 and the telescopic rod 12 are fixedly connected between the connecting plate 10 and the sliding sleeve 9. There are two sets of tension springs 11 and telescopic rods 12 installed at both ends of the connecting plate 10. The tension spring 11 is sleeved on the outside of the telescopic rod 12.
[0029] The splicing mechanism includes a slot 17, a plug rod 18 and a positioning hole 19. The slot 17 is opened at one end of the sliding sleeve 9 and is connected to the sliding groove 13. The end of the wedge block 14 is provided with a bevel, and the bevel matches the slot 17.
[0030] The insertion rod 18 is fixedly connected to the other end of the sliding sleeve 9, and the positioning hole 19 is opened on the outside of the insertion rod 18.
[0031] The insertion rod 18 mates with the slot 17, and the positioning hole 19 mates with the wedge block 14.
[0032] The working principle of a cable designed to withstand outer sheath damage, based on an embodiment, is as follows: A performance-enhancing mechanism consisting of a tensile stress dispersion layer 6, a compression-resistant anti-eating layer 7, and an anti-corrosion isolation layer 8 is provided between the inner sheath 4 and the outer sheath 1. The tensile stress dispersion layer 6 disperses stress using aramid fibers; the compression-resistant anti-eating layer 7 uses a galvanized metal layer to resist external compression or biting; and the anti-corrosion isolation layer 8 uses polyethylene material to isolate corrosive media, thereby improving the overall damage resistance of the cable. When the outer sheath 1 is damaged, the sliding sleeve 9 can slide along the surface of the outer sheath 1 to the damaged position and automatically lock through a clamping mechanism. Specifically, the connecting plates 10 on both sides of the sliding sleeve 9, through the elastic restoring force of the tension spring 11 and the telescopic rod 12, drive the wedge block 14 to slide along the sliding groove 13, causing its end inclined surface to press against the surface of the outer sheath 1 to form a friction fixation. Simultaneously, the protective net 16 on the sliding sleeve 9 covers the damaged area to prevent foreign objects from entering. Intrusion is prevented, and normal heat dissipation of the cable is ensured. For longer damaged sections, multiple sliding sleeves 9 can be connected end to end through a splicing mechanism. Specifically, the insertion rod 18 of the rear sliding sleeve 9 is inserted into the slot 17 of the front sliding sleeve 9. When the insertion rod 18 is inserted, it will contact the inclined surface of the wedge block 14, pushing the wedge block 14 to slide outward and stretching the tension spring 11 until the positioning hole 19 on the insertion rod 18 is aligned with the wedge block 14. At this time, the tension spring 11 contracts and drives the wedge block 14 to lock into the positioning hole 19 to complete automatic locking and form a continuous protective structure. In addition, when disassembling, it is only necessary to pull the connecting plates 10 on both sides of the sliding sleeve 9 to disengage the wedge block 14 from the positioning hole 19 by itself. The sliding sleeve 9 can be separated by sliding in the opposite direction. The operation is simple and does not require tools, which is convenient for maintenance or adjustment of the protection range. Through dynamic positioning, elastic self-locking and modular splicing, rapid repair and long-term protection of cable damage can be achieved.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cable resistant to damage from an outer skin, characterized by: The utility model provides a cable, including outer sheath (1) and inside three groups of annular arrangement cable conductor (2), the outside fixed connection of cable conductor (2) has shield sleeve (3), the inside of outer sheath (1) is provided with inner sheath (4), the inside between shield sleeve (3) and inner sheath (4) fills with insulating material (5), and performance reinforcing mechanism is installed between inner sheath (4) and outer sheath (1), the outside of outer sheath (1) is connected with multiple groups of transverse arrangement slide sleeve (9), the outside of slide sleeve (9) is installed with two groups of symmetrical arrangement connecting plate (10), and clamping mechanism is installed between connecting plate (10) and slide sleeve (9), the outside of slide sleeve (9) is provided with installation groove (15), the inside fixed connection of installation groove (15) has protective net (16), the outside of slide sleeve (9) is provided with slide groove (13), one side fixed connection of connecting plate (10) has wedge (14), and wedge (14) is connected in the inside of slide groove (13) slidingly, the end of wedge (14) is butted on the outside of outer sheath (1), and the outside of slide sleeve (9) is installed with splicing mechanism.
2. A cable according to claim 1, wherein: The performance reinforcing mechanism includes a tensile stress dispersion layer (6), a compression-resistant gnawing prevention layer (7), and a corrosion-resistant isolation layer (8), the tensile stress dispersion layer (6) is fixedly connected to the outside of the inner sheath (4), the compression-resistant gnawing prevention layer (7) is fixedly connected to the outside of the tensile stress dispersion layer (6), and the corrosion-resistant isolation layer (8) is fixedly connected between the compression-resistant gnawing prevention layer (7) and the outer sheath (1).
3. A cable according to claim 2, wherein: The tensile stress dispersion layer (6) is woven from aramid fibers, the compression-resistant gnawing prevention layer (7) is galvanized on the outer surface, and the corrosion-resistant isolation layer (8) is made of polyethylene material.
4. A cable to prevent damage to the outer sheath according to claim 1, characterized in that: The clamping mechanism includes a tension spring (11) and a telescopic rod (12), both of which are fixedly connected between the connecting plate (10) and the slide sleeve (9), and the number of the tension spring (11) and the telescopic rod (12) is two and they are installed at both ends of the connecting plate (10), and the tension spring (11) is sleeved on the outside of the telescopic rod (12).
5. A cable to prevent damage to the outer sheath according to claim 1, characterized in that: The splicing mechanism includes a slot (17), a plug rod (18), and a positioning hole (19), the slot (17) is formed at one end of the slide sleeve (9) and is communicated with the slide groove (13), the end of the wedge (14) is provided with an inclined surface, and the inclined surface is matched with the slot (17).
6. A cable according to claim 5, wherein: The plug rod (18) is fixedly connected to the other end of the slide sleeve (9), and the positioning hole (19) is formed on the outside of the plug rod (18).
7. A cable according to claim 5, wherein: The plug rod (18) is matched with the slot (17), and the positioning hole (19) is matched with the wedge (14).