Stretch-resistant cable
By introducing multiple layers of high-strength fiber braided reinforcement, elastic buffer layer, and conductors with specific stranded structures into the cable, combined with tensile tape and fiber filaments, the problems of cable deformation and breakage under tensile force are solved, and the tensile strength and electrical performance of the cable are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG GUICHENG CABLE CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-17
AI Technical Summary
Existing cables are prone to deformation and breakage under tensile force, resulting in poor electrical performance and safety hazards. Furthermore, their tensile resistance measures are limited and cannot adapt to various tensile conditions.
A tensile-resistant cable structure was designed, including an insulation layer, a reinforcing layer, an elastic buffer layer, and an outer sheath. The conductor uses high-strength fiber braiding and a specific stranding structure, combined with tensile-resistant tape and fiber filaments to enhance tensile performance, and a corrugated tube is set outside the outer sheath to increase support.
It improves the structural stability and electrical performance of cables under tensile force, extends service life, reduces safety hazards, and adapts to various tensile conditions.
Smart Images
Figure CN224137931U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable technology, specifically referring to a tensile-resistant cable. Background Technology
[0002] Cables are an indispensable and important component in power transmission and the connection of various electrical equipment. Existing cables are often subjected to tensile forces during use, such as dragging during laying and dynamic tensile loads during equipment movement.
[0003] Traditional cable structures have several shortcomings when facing tensile forces. On the one hand, the conductors inside the cable may deform under tension, leading to increased resistance and affecting the efficiency and stability of power transmission. On the other hand, the outer sheath and internal insulation layers of the cable may also be damaged or delaminated under tensile forces, which not only reduces the cable's service life but may also cause safety hazards such as leakage and short circuits. Furthermore, existing tensile resistance measures are often relatively simple and cannot adequately adapt to various types and degrees of tension. Utility Model Content
[0004] The technical problem to be solved by this utility model is the problem of poor electrical performance and safety hazards caused by deformation and damage due to poor tensile strength in the prior art.
[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:
[0006] The present invention provides a tensile-resistant cable, comprising an insulation layer and an outer sheath, wherein the outer sheath is disposed outside the insulation layer, and a conductor is wrapped inside the insulation layer;
[0007] It also includes a reinforcing layer, which is bonded to the outside of the insulating layer and is made of multiple layers of high-strength fibers.
[0008] It also includes an elastic buffer layer for buffering the tensile force exerted on the cable by the outside. The elastic buffer layer is composed of an inner sleeve and an outer sleeve respectively attached between the reinforcing layer and the outer sheath, and an anti-tensile structure located between the inner sleeve and the outer sleeve. The anti-tensile structure is composed of an X-shaped anti-tensile strip distributed in a circumferential array about the outer wall of the inner sleeve. The two ends of the anti-tensile strip are fixedly connected to the outer wall of the inner sleeve and the inner wall of the outer sleeve, respectively.
[0009] Preferably, the outer sheath is further provided with a corrugated tube on the outside, and a protective layer is tightly extruded on the inner wall of the corrugated tube to cover the outside of the outer sheath for separate reinforcement of the bending area.
[0010] Preferably, the reinforcing layer contains multiple insulating layers, each of which encapsulates the conductor. The insulating layers employ a multi-strand stranded structure, and the conductor employs a multi-strand stranded structure.
[0011] Preferably, tensile-resistant fiber filaments are provided between the outer wall of the outer jacket and the outer sheath, the tensile-resistant fiber filaments are evenly distributed along the cable axis, and the tensile-resistant fiber filaments are aramid fibers.
[0012] Preferably, the included angle between two adjacent groups of tensile structures is 30°-45°, and 8-12 groups are provided. The cross-section of the tensile strip is quadrilateral.
[0013] Preferably, the outer sheath is made of rubber, the tensile band is made of wear-resistant and weather-resistant polyvinyl chloride (PVC), the insulation layer and protective layer are made of polyimide (PI) or cross-linked polyethylene (XLPE), and the high-strength fiber is made of glass fiber.
[0014] The beneficial effects of this utility model by adopting the above structure are as follows:
[0015] The various layers of this tensile cable work together. The outer sheath, as the outermost layer, protects the internal structure from the influence of the external environment. The reinforcing layer is woven from multiple layers of high-strength fibers, which allows the tensile force to be evenly distributed on each fiber. The elastic buffer layer is located between the outer protective sheath and the reinforcing layer, which can absorb some of the tensile energy. The tensile band achieves both tensile and compressive resistance.
[0016] Meanwhile, the conductor employs a multi-strand stranded structure with a specific stranding angle, ensuring electrical performance while improving tensile strength. The inclusion of tensile-resistant fibers further enhances the overall tensile strength.
[0017] A corrugated tube is installed on the outside of the outer sheath to increase support during bending and protect the cable structure. Attached Figure Description
[0018] Figure 1 A schematic diagram of the overall structure of a tensile-resistant cable provided by this utility model;
[0019] Figure 2 A schematic diagram of a combination of a tensile cable and a corrugated pipe provided in this application;
[0020] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle;
[0021] Figure 4 This is a schematic diagram of the corrugated pipe structure in this application.
[0022] Among them, 1. Insulation layer, 2. Outer sheath, 3. Conductor, 4. Reinforcing layer, 5. Elastic buffer layer, 6. Corrugated pipe, 7. Tensile fiber filament;
[0023] 51. Inner sleeve, 52. Outer sleeve, 53. Tensile structure.
[0024] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1:
[0028] like Figure 1 As shown, the present invention proposes a tensile-resistant cable, including an insulation layer 1 and an outer sheath 2. The outer sheath 2 is disposed outside the insulation layer 1. A conductor 3 is wrapped inside the insulation layer 1. The reinforcing layer 4 is provided with multiple insulation layers 1, each of which wraps the conductor 3. The insulation layer 1 adopts a multi-strand stranded structure, and the conductor 3 adopts a multi-strand stranded structure.
[0029] In this embodiment, the outer sheath 2 is made of rubber, and the insulating layer 1 is made of polyimide (PI) or cross-linked polyethylene (XLPE).
[0030] The structure also includes a reinforcing layer 4, which is attached to the outside of the insulating layer 1. The reinforcing layer 4 is woven from multiple layers of high-strength fibers, and the high-strength fibers are glass fibers, which are woven from multiple layers of high-strength fibers so that the tensile force can be evenly distributed on each fiber.
[0031] refer to Figure 3 As shown, this structure also includes: an elastic buffer layer 5, used to buffer the tensile force exerted on the cable by external forces. The elastic buffer layer 5 includes:
[0032] Inner sleeve 51 fits against the outer wall of the reinforcing layer 4;
[0033] The outer sleeve 52 is located outside the inner sleeve 51 and fits against the inner wall of the outer sheath 2;
[0034] The tensile-resistant structure 53 is located between the inner sleeve 51 and the outer sleeve 52. It is composed of X-shaped positioning rods arranged in a circumferential array about the outer wall of the inner sleeve 51. The two ends of the positioning rods are fixedly connected to the outer wall of the inner sleeve 51 and the inner wall of the outer sleeve 52, respectively.
[0035] The included angle between two adjacent groups of tensile structures 53 is 30°-45°, and 8-12 groups are set according to the included angle. The cross-section of the tensile strip is quadrilateral, and two groups of tensile strips form an X-shaped structure. The tensile strip is made of wear-resistant and weather-resistant polyvinyl chloride (PVC) material.
[0036] As a further example:
[0037] The outer wall of the outer jacket 52 and the outer sheath 2 are provided with tensile fiber 7, which is uniformly distributed along the cable axis and is made of aramid fiber.
[0038] In the above structure, the various layers of this tensile cable work together. The outer sheath 2, as the outermost layer, protects the internal structure from the influence of the external environment. The elastic buffer layer 5, located between the outer protective sheath and the reinforcing layer 4, absorbs some tensile energy. The tensile strip achieves both tensile and compressive strength. Simultaneously, the conductor 3 employs a multi-strand stranded structure with a specific stranding angle, ensuring electrical performance while improving tensile strength. The inclusion of tensile fiber filaments 7 further enhances the overall tensile performance. The material selection for the outer sheath 2 considers abrasion resistance and weather resistance to adapt to different environments. The insulation layer 1 material possesses excellent insulation and mechanical properties. The high-strength fibers in the reinforcing layer 4 exhibit high strength and low density. The tensile fiber filaments 7 are aramid fibers, providing strong axial tensile support. Example 2:
[0039] refer to Figure 2 and Figure 4 As shown, a corrugated tube 6 is also provided on the outer side of the outer sheath 2. A protective layer is tightly extruded on the inner wall of the corrugated tube 6 and covers the outside of the outer sheath 2. The protective layer forms a flat structure on the inner wall, which is convenient for fitting the outside of the cable structure and is used for separate reinforcement of the bending area.
[0040] The protective layer is made of polyimide (PI) or cross-linked polyethylene (XLPE).
[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A tensile-resistant cable comprising an insulation layer (1) and an outer jacket (2) arranged on the outside of the insulation layer (1), the insulation layer (1) enclosing a conductor (3) therein, characterized in that Also includes: A reinforcing layer (4) is attached to the outside of the insulating layer (1), and the reinforcing layer (4) is woven from multiple layers of high-strength fibers; The elastic buffer layer (5) is composed of an inner sleeve (51) and an outer sleeve (52) respectively attached between the reinforcing layer (4) and the outer sleeve (2), and a tensile structure (53) located between the inner sleeve (51) and the outer sleeve (52). The tensile structure (53) is composed of tensile strips arranged in an X-shape distributed around the outer wall of the inner sleeve (51). The two ends of the tensile strips are fixedly connected to the outer wall of the inner sleeve (51) and the inner wall of the outer sleeve (52) respectively.
2. A tensile resistant cable according to claim 1, characterized in that: The outer sheath (2) is also provided with a corrugated pipe (6), and the inner wall of the corrugated pipe (6) is tightly extruded with a protective layer to cover the outside of the outer sheath (2).
3. A tensile resistant cable according to claim 1, characterized in that: The outer wall of the outer jacket (52) and the outer sheath (2) are provided with tensile fiber filaments (7), which are evenly distributed along the cable axis and are aramid fibers.
4. A tensile resistant cable according to claim 1, characterized in that: The included angle between two adjacent sets of tensile structures (53) is 30°-45°, and the cross-section of the tensile strip is quadrilateral.
5. A tensile-resistant cable according to claim 1, characterized in that: The reinforcing layer (4) has multiple insulating layers (1), each insulating layer (1) encapsulates the conductor (3), the insulating layer (1) adopts a multi-strand stranded structure, and the conductor (3) adopts a multi-strand stranded structure.
6. A tensile resistant cable according to claim 1 or 5, c h a r a c t e r i s e d in that: The outer sheath (2) is made of rubber, the tensile tape is made of polyvinyl chloride, the insulation layer (1) and the protective layer are made of polyimide or cross-linked polyethylene, and the high-strength fiber is made of glass fiber.