A cable resistant to tensile deformation

Abstract

The utility model relates to cable technical field discloses a kind of anti-stretching deformation cables, including cable core body and outer protective sleeve layer, the cable core body outer wall is fixedly connected with conductor shielding layer, the conductor shielding layer right side outer wall is provided with pressure relief pad, the pressure relief pad left side outer wall is fixedly connected with filling layer, the filling layer outer wall is fixedly connected with insulating layer, the insulating layer outer wall is fixedly connected with protective layer, the protective layer outer wall is equipped with inner sheath layer, the inner sheath layer outer wall is fixedly connected in outer protective sleeve layer inner wall.In the utility model, weaving technology is replaced with traditional wrapping, and is combined with convex point and limiting hole, solves uneven stress of protective layer, easy displacement problem, improves tensile and stability;While core body multiple strand twisted dispersion tension, pressure relief pad fills gap energy absorption anti-friction, forms double protection, guarantees core body durable and transmission stability.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a cable resistant to tensile deformation. Background Technology

[0002] As the core carrier of power transmission and signal conduction, cables are widely used in industrial production, energy transmission, rail transportation, new energy sources (such as wind power and photovoltaics), and civil construction. In practical use, cables often face tension during installation, environmental stresses during long-term use (such as vibration and slight displacement), and continuous tensile forces in certain special scenarios. Therefore, their structural stability and tensile strength directly affect transmission efficiency and service life. Especially in industrial equipment connections and outdoor overhead lines, if the internal structure of the cable is damaged or misaligned due to tension, it will not only affect normal power supply or signal transmission but may also cause safety hazards. Therefore, the industry has placed increasingly higher demands on the tensile strength and structural stability of cables.

[0003] Currently, conventional cables on the market employ a wrapping process for their protective layers to achieve basic protection. This involves wrapping protective materials (such as metal strips) around the inner sheath to bear some of the external tensile force. The core is typically conductive through simple stranding or single-strand arrangement. However, due to limitations in manufacturing processes and structural design, existing cables have certain limitations in tensile strength and stability. On the one hand, the wrapping process can easily lead to localized stress concentration in the protective layer under stress, making it difficult to evenly distribute the tensile force. Furthermore, the adhesion between the metal protective layer and the inner sheath is weak, making it prone to misalignment after long-term stress or vibration, affecting the overall tensile strength. On the other hand, if the core is simply stranded without a dedicated buffer structure, external axial tensile force can easily concentrate on a single core, causing it to break due to localized overload. Additionally, the lack of effective filling between the core strands makes them susceptible to damage during tension due to friction and compression, making it difficult to meet the requirements for long-term stable operation of cables under complex working conditions.

[0004] In response to this technical problem, this application proposes a cable that is resistant to tensile deformation. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cable that is resistant to tensile deformation. It replaces the traditional wrapping process with a braiding process and combines protrusions with limiting holes to solve the problems of uneven stress and easy displacement of the protective layer, thereby improving tensile strength and stability. At the same time, the multi-strand twisted core disperses the tensile force, and the pressure-relieving pad fills the gaps to absorb energy and prevent friction, forming a double protection to ensure the durability of the core and stable transmission.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A cable resistant to tensile deformation includes a cable core and an outer protective sheath. A conductor shielding layer is fixedly connected to the outer wall of the cable core. A pressure-relieving pad is provided on the right outer wall of the conductor shielding layer. A filling layer is fixedly connected to the left outer wall of the pressure-relieving pad. An insulation layer is fixedly connected to the outer wall of the filling layer. A protective layer is fixedly connected to the outer wall of the insulation layer. An inner sheath is sleeved on the outer wall of the protective layer. The outer wall of the inner sheath is fixedly connected to the inner wall of the outer protective sheath.

[0007] Furthermore, the outer wall of the pressure-relieving pad is provided with a positioning groove, and the outer wall of the conductor shielding layer is disposed in the positioning groove.

[0008] Furthermore, the outer wall of the filling layer is sleeved on the outer wall of multiple conductor shielding layers, and a limit rod is provided between the multiple conductor shielding layers to separate them. The outer wall of the limit rod is fixedly connected to the outside of the pressure relief pad.

[0009] Furthermore, a connecting plate is fixedly connected to the outer wall of the protective layer, and the outer wall of the connecting plate is disposed on the inner wall of the inner sheath layer.

[0010] Furthermore, the outer wall of the connecting plate is fixedly connected with protrusions, the inner wall of the inner sheath layer is provided with limiting holes, and the outer wall of the protrusions is disposed inside the limiting holes.

[0011] Furthermore, the protective layer is a layered sheet of galvanized material.

[0012] Furthermore, the pressure-relieving pad is made of methyl vinyl silicone rubber.

[0013] Furthermore, the insulating layer is made of cross-linked polyethylene.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the tensile strength and structural stability of the cable are enhanced through the synergy of the braided structure and the raised dot design. The protective layer uses a braiding process instead of traditional wrapping, which can evenly distribute the tensile force to each braided point, significantly improving the overall tensile limit. Simultaneously, the connecting plate on the outer wall of the protective layer has raised dots, which can precisely fit with the limiting holes on the inner wall of the inner sheath layer, preventing the metal protective layer from shifting due to weak adhesion and ensuring that it can always stably assist in bearing the tensile force. This combined design not only solves the problems of uneven stress and easy displacement of traditional protective layers, but also makes the cable structure more stable during tension, effectively reducing the risk of damage to internal components.

[0015] 2. In this utility model, the tensile strength and protective effect of the cable core are further improved by combining the cable core stranding with the pressure-relieving pad. The core is first integrated through a multi-strand stranding process, which can evenly distribute the external axial tensile force to each core, avoiding the breakage of a single core due to localized stress concentration. The spiral shape formed by stranding can also provide buffering during tension, reducing the impact of tensile force. The pressure-relieving pad fills the gaps during the core stranding process, which not only disperses the friction and extrusion force between the core strands to prevent damage to the core, but its elastic properties can also absorb some of the tensile force, forming a double protection with the stranded core, making the core more durable under stress and ensuring the stable transmission function of the cable. Attached Figure Description

[0016] Figure 1 This is a perspective view of a cable resistant to tensile deformation proposed in this utility model. Figure 2 This is a schematic diagram of the conductor shielding layer structure of a cable designed to resist tensile deformation according to this utility model. Figure 3 This is a schematic diagram of a limiting hole structure for a cable designed to prevent tensile deformation, as proposed in this utility model. Figure 4 This is a schematic diagram of the protective layer structure of a cable designed to prevent tensile deformation according to this utility model. Figure 5 This is a schematic diagram of a positioning groove structure for a cable designed to prevent tensile deformation, as proposed in this utility model.

[0017] Legend: 1. Inner sheath layer; 2. Protective layer; 3. Insulation layer; 4. Filler layer; 5. Connecting plate; 6. Raised dots; 7. Conductor shielding layer; 8. Cable core; 9. Pressure relief pad; 10. Limiting rod; 11. Positioning groove; 12. Limiting hole; 13. Outer protective sheath layer. Detailed Implementation

[0018] 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.

[0019] Reference Figure 1 , Figure 2 and Figure 5The present invention provides an embodiment of a cable resistant to tensile deformation, comprising a cable core 8 and an outer protective sheath 13. A conductor shielding layer 7 is fixedly connected to the outer wall of the cable core 8. A pressure-relieving pad 9 is provided on the right outer wall of the conductor shielding layer 7. A filling layer 4 is fixedly connected to the left outer wall of the pressure-relieving pad 9. An insulation layer 3 is fixedly connected to the outer wall of the filling layer 4. A protective layer 2 is fixedly connected to the outer wall of the insulation layer 3. An inner sheath layer 1 is sleeved on the outer wall of the protective layer 2. The outer wall of the inner sheath layer 1 is fixedly connected to the inner wall of the outer protective sheath layer 13.

[0020] Specifically, the cable has an internal protective layer 2 made of galvanized steel strip wrapped around it to assist in reinforcing the inner sheath and bear part of the tensile force. Therefore, bending and shaking are inevitable during use, which can cause uneven distribution or misalignment of the internal galvanized steel strip. This structure uses a braided design for the internal protective layer 2, ensuring even distribution within the inner sheath layer 1. Compared to a wrapped design, the braided armor further improves the overall tensile strength. Furthermore, because the protective layer 2 is made of metal, its adhesion is relatively weak, making it prone to misalignment within the inner sheath layer 1. A connecting plate 5 is fixed to the outer wall. The outer wall of the connecting plate 5 has protrusions 6, which fit with the limiting holes 12 on the inner wall of the inner sheath layer 1, thereby making the fit between the protective layer 2 and the inner sheath layer 1 more stable. The hemispherical protrusions 6 prevent sharp structures from scratching the reinforcing layer. The four cable cores 8 are first integrated into one through a multi-strand stranding process. This stranding structure can evenly distribute the axial tensile force applied from the outside to each core, preventing a single core from breaking due to localized stress concentration. At the same time, the spiral shape formed by stranding can produce a certain buffering effect during tension, reducing the tensile force directly borne by the core. Impact resistance significantly improves the tensile strength of the core itself. After the conductor shielding layer 7 is tightly wrapped around the outside of the core strands, the three core strands with conductor shielding layer 7 are then twisted together with the pressure-relieving pad 9. They are engaged by the positioning groove 11 formed by the pressure-relieving pad 9 and the limiting rod 10. During the twisting process, the pressure-relieving pad 9 fills the gaps between the core strands, which not only further disperses the interaction force between the core strands during tension and prevents the core strands from being damaged by friction and compression, but its own elastic properties can also absorb part of the tensile force during tension. Combined with the twisting structure of the core strands, it forms a double tensile protection. Subsequently, this composite stranded structure is entirely set inside the filler layer 4. The filler layer 4 tightly wraps the composite stranded structure, which on the one hand fixes the relative position of each core strand and the pressure-relieving pad 9, preventing local stress imbalance caused by structural misalignment during tension. On the other hand, the high-strength material of the filler layer 4 itself can act as an external tensile barrier, working together with the internal stranded structure to resist tensile force. Ultimately, the tensile performance of the entire cable structure is significantly enhanced, effectively preventing damage to the internal cable structure even under long-term stress or frequent tension, ensuring stable operation of the device. Among them, the outer protective sheath layer 13 is made of neoprene rubber, the protective layer 2 is made of galvanized steel strip braided layer, the conductor shielding layer 7 is made of aluminum foil, the insulation layer 3 is made of cross-linked polyethylene, the inner sheath layer 1 is made of polyvinyl chloride, and the pressure-relieving pad 9 is made of methyl vinyl silicone rubber.

[0021] Reference Figure 2 , Figure 3 and Figure 5The outer wall of the pressure-relieving pad 9 has a positioning groove 11, and the outer wall of the conductor shielding layer 7 is set inside the positioning groove 11. The outer wall of the filling layer 4 is sleeved on the outer walls of multiple conductor shielding layers 7, and the multiple conductor shielding layers 7 are separated by limit rods 10, with the outer wall of the limit rods 10 fixedly connected to the outside of the pressure-relieving pad 9. The outer wall of the protective layer 2 is fixedly connected to a connecting plate 5, and the outer wall of the connecting plate 5 is set inside the inner wall of the inner sheath layer 1. The outer wall of the connecting plate 5 is fixedly connected to a protrusion 6, and the inner wall of the inner sheath layer 1 has a limit hole 12, with the outer wall of the protrusion 6 set inside the limit hole 12. The protective layer 2 is a layered galvanized thin strip. The pressure-relieving pad 9 is made of methyl vinyl silicone rubber. The insulating layer 3 is made of cross-linked polyethylene.

[0022] Specifically, the positioning groove 11 on the outer wall of the pressure-relieving pad 9 can precisely limit the conductor shielding layer 7, preventing the conductor shielding layer 7 from shifting during the cable's stretching or bending process, thus ensuring the stability of the core structure; the limiting rods 10 between multiple conductor shielding layers 7 can effectively separate each core strand, preventing damage caused by squeezing and friction between core strands, while ensuring that each core strand is subjected to uniform force, further improving the tensile strength; the connecting plate 5 on the outer wall of the protective layer 2, together with the protrusions 6 on its outer wall, engages with the limiting holes 12 on the inner wall of the inner sheath layer 1, which can further enhance the connection stability between the protective layer 2 and the inner sheath layer 1, preventing the metal protective layer 2 from being misaligned inside the inner sheath layer 1, ensuring that the protective layer 2 can always bear the tensile force evenly, and assisting in strengthening the overall tensile strength. Among them, the protective layer 2 is a layered galvanized thin strip, which can improve flexibility while ensuring strength and adapt to the bending requirements of the cable; the pressure relief pad 9 is made of methyl vinyl silicone rubber, which has good elasticity and can effectively absorb tensile impact; the insulation layer 3 is made of cross-linked polyethylene, which can improve the overall environmental aging resistance of the cable while ensuring insulation performance and is suitable for various application scenarios.

[0023] Working Principle: When the cable is subjected to axial tensile force, the outer protective sheath 13 first absorbs the impact through the toughness of neoprene rubber, reducing the inward transmission of tensile force. After the tensile force is transmitted to the inner sheath 1, the limiting hole 12 on its inner wall engages with the protrusion 6 of the connecting plate 5 of the protective layer 2, preventing misalignment of the protective layer 2 and ensuring that the galvanized steel strip braided protective layer 2 bears the force evenly, thus improving the tensile strength limit. Subsequently, the tensile force is transmitted to the interior through the filling layer 4. The filling layer 4 fixes the position of the cable core 8 and the pressure-reducing pad 9, preventing localized force concentration. The four twisted cable cores 8 distribute the tensile force to each core, and the spiral shape buffers the impact of the tensile force, preventing single-core breakage. The pressure-reducing pad 9 fills the gaps between the cores, absorbing the inter-strand force. The conductor shielding layer 7 tightly wraps the core, assisting in dispersing the tensile force while ensuring insulation. Finally, through the synergy of the multi-layer structure, the external tensile force is gradually dispersed and buffered, preventing cable tensile deformation or internal damage, and ensuring stable operation.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable resistant to tensile deformation, comprising a cable core (8) and an outer protective sheath (13), characterized in that: The outer wall of the cable core (8) is fixedly connected to a conductor shielding layer (7). A pressure-relieving pad (9) is provided on the right outer wall of the conductor shielding layer (7). A filling layer (4) is fixedly connected to the left outer wall of the pressure-relieving pad (9). An insulation layer (3) is fixedly connected to the outer wall of the filling layer (4). A protective layer (2) is fixedly connected to the outer wall of the insulation layer (3). An inner sheath layer (1) is sleeved on the outer wall of the protective layer (2). The outer wall of the inner sheath layer (1) is fixedly connected to the inner wall of the outer protective sheath layer (13).

2. The cable resistant to tensile deformation according to claim 1, characterized in that: The outer wall of the pressure-relieving pad (9) is provided with a positioning groove (11), and the outer wall of the conductor shielding layer (7) is set in the positioning groove (11).

3. The cable resistant to tensile deformation according to claim 1, characterized in that: The outer wall of the filling layer (4) is sleeved on the outer wall of multiple conductor shielding layers (7), and a limit rod (10) is provided between the multiple conductor shielding layers (7) to separate them. The outer wall of the limit rod (10) is fixedly connected to the outside of the pressure relief pad (9).

4. The cable resistant to tensile deformation according to claim 1, characterized in that: The outer wall of the protective layer (2) is fixedly connected to a connecting plate (5), and the outer wall of the connecting plate (5) is set on the inner wall of the inner sheath layer (1).

5. The cable resistant to tensile deformation according to claim 4, characterized in that: The outer wall of the connecting plate (5) is fixedly connected with a protrusion (6), and the inner wall of the inner sheath layer (1) is provided with a limiting hole (12), and the outer wall of the protrusion (6) is set inside the limiting hole (12).

6. The cable resistant to tensile deformation according to claim 1, characterized in that: The protective layer (2) is a layered galvanized thin strip.

7. The cable resistant to tensile deformation according to claim 1, characterized in that: The pressure-relieving pad (9) is made of methyl vinyl silicone rubber.

8. The cable resistant to tensile deformation according to claim 1, characterized in that: The insulating layer (3) is made of cross-linked polyethylene.

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