A compression resistant cable

Abstract

The utility model relates to cable technical field especially is a kind of compression-resistant cable, including a pair of cable end, and the outer compression-resistant component is equipped between cable end, and the inner cavity of outer compression-resistant component is equipped with inner compression-resistant component, and the inner side of inner compression-resistant component is equipped with the cable core of two ends respectively with adjacent cable end connection, and outer compression-resistant component includes compression-resistant outer tube, and compression-resistant outer tube is the hollow pipe of regular hexagon, and the inner end of cable end is fixedly connected with the two ends of compression-resistant outer tube, and the outside six sides of compression-resistant outer tube are arranged and are opened with several convex strip clamping groove at equal interval, and the outside of compression-resistant outer tube is equipped with multiple compression-resistant convex strip, and compression-resistant convex strip is matched with convex strip clamping groove, in the utility model, the composite setting of outer compression-resistant component and inner compression-resistant component can unload force gradually to external pressure, to guarantee the normal use of cable core, prevent cable core from deforming, breaking, to avoid leading to circuit interruption, guarantee the normal supply of electric power.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a pressure-resistant cable. Background Technology

[0002] A cable is a conductive device used to transmit electrical energy, information, or realize the conversion of electromagnetic energy. It consists of key parts such as conductive core wire, insulation layer, and protective layer. The core conductive core wire is mostly made of metal materials such as copper and aluminum. It realizes the transmission of current or signal by virtue of its good conductivity. Its cross-sectional area is designed according to the current carrying capacity requirements and can be formed by twisting single strands or multiple strands.

[0003] It is widely used in power systems, communication networks, industrial automation, construction engineering and other fields. Cables bear the heavy responsibility of transmitting electrical energy. If the cable's compressive strength is insufficient, when subjected to external pressure (such as buried cables being pressed by heavy objects above), the internal cable core is prone to deformation and breakage, which in turn leads to circuit interruption and affects the normal power supply.

[0004] As a core component of the power system, the compressive strength of cables is crucial for ensuring the continuous and stable operation of the power system. Currently, most cable compressive strength methods involve adding reinforcing ribs inside the cable or adding an armor layer on the outside. Although these methods provide a certain level of compressive strength, their limited compressive strength means that the compressive load is relatively fixed. When the external pressure exceeds the limited compressive load, the protective effect on the cable core will be greatly reduced or even fail, making it difficult to ensure the normal use of the cable core. Therefore, a compressive strength cable is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pressure-resistant cable to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pressure-resistant cable includes a pair of cable ends, with an outer pressure-resistant assembly between the cable ends. An inner pressure-resistant assembly is located within the inner cavity of the outer pressure-resistant assembly. A cable core is located on the inner side of the inner pressure-resistant assembly, with both ends connected to adjacent cable ends. The outer pressure-resistant assembly includes a pressure-resistant outer tube, which is a hollow hexagonal tube. Both ends of the pressure-resistant outer tube are fixedly connected to the inner ends of the cable ends. A plurality of raised grooves are evenly spaced along the outer hexagonal sides of the pressure-resistant outer tube. Multiple pressure-resistant raised strips are located on the outer side of the pressure-resistant outer tube, and these raised strips are adapted to the raised grooves, with each raised strip engaging within one of the raised grooves.

[0008] As a further optimization of this utility model, the inner cavity of the pressure-resistant outer tube is provided with a plurality of pressure-resistant rods, the number of which is six, and all six pressure-resistant rods are fixedly installed at the inner corners of the pressure-resistant outer tube.

[0009] As a further optimization of this utility model, the inner pressure-resistant component includes a pressure-resistant inner tube, which is a hollow hexagonal tube, and the center of the pressure-resistant inner tube coincides with that of the pressure-resistant outer tube.

[0010] As a further optimization of this utility model, the inner and outer pressure-resistant tubes are staggered at their corners, and each apex of the inner pressure-resistant tube points to the midpoint of the corresponding side of the outer pressure-resistant tube.

[0011] As a further optimization of this utility model, the inner wall of the pressure-resistant inner tube is hollow, and the inner wall of the pressure-resistant inner tube is filled with shear-thickening silicone.

[0012] As a further optimization of this utility model, the inner pressure-resistant assembly further includes an inner sheath disposed in the inner cavity of the pressure-resistant inner tube. The inner cavity of the inner sheath is provided with multiple pressure-resistant skeletons, which are spirally and interwoven around the outside of the cable core and fixedly connected to the outside of the cable core.

[0013] As a further optimization of this utility model, the end of the pressure-resistant skeleton away from the cable core is set in an arc shape, and the end of the pressure-resistant skeleton away from the cable core is fixedly connected to the inner wall of the inner sheath.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the external pressure-resistant component provides good external pressure resistance, enabling the entire structure to withstand initial pressure when subjected to external pressure, thus protecting the interior of the external pressure-resistant component. The internal pressure-resistant component provides good internal pressure resistance, enabling the entire structure to withstand pressure again when subjected to a load exceeding the pressure resistance of the external pressure-resistant component, thus protecting the cable core. The combined design of the external and internal pressure-resistant components can gradually relieve external pressure, ensuring the normal use of the cable core, preventing deformation and breakage of the cable core, thereby avoiding circuit interruption and ensuring normal power supply. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded view of the structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram of the external pressure-resistant component of this utility model;

[0020] Figure 5 This utility model Figure 4 A magnified view of a portion of the image;

[0021] Figure 6 This is a cross-sectional view of the pressure-resistant inner tube of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the inner sheath of this utility model;

[0023] Figure 8 This is a cross-sectional view of the inner sheath of this utility model.

[0024] In the diagram: 1. Cable end; 2. External pressure-resistant assembly; 21. Pressure-resistant outer tube; 22. Raised groove; 23. Pressure-resistant raised strip; 24. Pressure-resistant rod; 3. Internal pressure-resistant assembly; 31. Pressure-resistant inner tube; 32. Inner sheath; 33. Pressure-resistant skeleton; 4. Cable core. 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. 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.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Please see Figures 1-8 This utility model provides a technical solution:

[0028] A pressure-resistant cable includes a pair of cable ends 1, an outer pressure-resistant component 2 between the cable ends 1, an inner pressure-resistant component 3 inside the outer pressure-resistant component 2, and a cable core 4 on the inner side of the inner pressure-resistant component 3, both ends of which are respectively connected to the adjacent cable ends 1. The outer pressure-resistant component 2 includes a pressure-resistant outer tube 21, which is a hollow tube in the shape of a regular hexagon, and both ends of the pressure-resistant outer tube 21 are fixedly connected to the inner end of the cable end 1. A plurality of raised grooves 22 are arranged at equal intervals on the outer hexagon of the pressure-resistant outer tube 21, and a plurality of pressure-resistant raised strips 23 are provided on the outer side of the pressure-resistant outer tube 21. The pressure-resistant raised strips 23 are adapted to the raised grooves 22, and the plurality of pressure-resistant raised strips 23 are engaged in the raised grooves 22.

[0029] It should be noted that the inner cavity of the pressure-resistant outer tube 21 is provided with multiple pressure-resistant rods 24, and there are six pressure-resistant rods 24. All six pressure-resistant rods 24 are fixedly installed at the inner corners of the pressure-resistant outer tube 21.

[0030] Furthermore, the above configuration can provide the whole with good external pressure resistance, enabling the whole to withstand external pressure for the first time, thereby protecting the interior of the external pressure-resistant component 2.

[0031] Specifically: In the above configuration, the regular hexagonal shape of the pressure-resistant outer tube 21 can evenly distribute the external pressure to the entire outer surface, avoiding local stress concentration. The pressure-resistant rod 24 can deform under pressure, relieve stress through its own deformation, and generate restoring force after the pressure disappears, thus preventing the pressure resistance from failing.

[0032] As a further implementation of this scheme, the inner pressure-resistant component 3 includes a pressure-resistant inner tube 31, which is a hollow tube in the shape of a regular hexagon. The center of the pressure-resistant inner tube 31 coincides with that of the pressure-resistant outer tube 21. The corners of the pressure-resistant inner tube 31 and the pressure-resistant outer tube 21 are staggered, and each vertex of the pressure-resistant inner tube 31 points to the midpoint of the corresponding side of the pressure-resistant outer tube 21.

[0033] Furthermore, in the above configuration, the staggered arrangement allows the corners of the inner pressure-resistant tube 31 to act directly on the edges of the outer pressure-resistant tube 21. The edges of the outer pressure-resistant tube 21 can disperse and transfer concentrated stress along its own length, avoiding excessive stress accumulation at a single contact point and reducing the risk of local crushing. Thus, they can mutually restrain and support each other when under pressure, thereby increasing the overall resistance to deformation.

[0034] As a further implementation of this scheme, the inner wall of the pressure-resistant inner tube 31 is hollow, and the inner wall of the pressure-resistant inner tube 31 is filled with shear-thickening silicone.

[0035] Furthermore, in the above configuration, the shear-thickening silicone can harden instantly within milliseconds after the inner tube 31 is subjected to pressure and buckling, limiting the collapse to a localized area and preventing the inner tube 31 from expanding and collapsing.

[0036] As a further implementation of this solution, the inner pressure-resistant assembly 3 also includes an inner sheath 32 disposed in the inner cavity of the pressure-resistant inner tube 31. The inner cavity of the inner sheath 32 is provided with multiple pressure-resistant skeletons 33. The multiple pressure-resistant skeletons 33 are spirally and interlacedly wound around the outside of the cable core 4 and fixedly connected to the outside of the cable core 4. The end of the pressure-resistant skeleton 33 away from the cable core 4 is arc-shaped, and the end of the pressure-resistant skeleton 33 away from the cable core 4 is fixedly connected to the inner wall of the inner sheath 32.

[0037] Furthermore, the multiple interlocking compression skeletons 33 can improve the stress dispersion capability when the inner sheath 32 is under pressure, avoiding stress concentration on the compression skeletons 33. In addition, the rounded ends of the compression skeletons 33 can further enhance the stress dispersion effect and prevent excessive stress accumulation at a single contact point.

[0038] Workflow: The external pressure-resistant component 2 provides good external pressure resistance for the entire assembly, enabling it to withstand initial pressure when subjected to external forces, thus protecting the internal structure of the external pressure-resistant component 2. Under pressure, the pressure first acts on the pressure-resistant protrusion 23 in the protrusion groove 22. The pressure is initially buffered by the material properties of the pressure-resistant protrusion 23. The pressure-resistant protrusion 23 can be made of elastic materials such as rubber. Furthermore, because the pressure-resistant protrusion 23 is engaged in the protrusion groove 22, it is easy to replace if damaged. When external pressure... When the force exceeds the compressive strength of the compression-resistant protrusion 23, it will act on the compression-resistant outer tube 21. The compression-resistant outer tube 21 will buckle and absorb the initial energy. At the same time, it can evenly distribute the external pressure to the entire outer surface through its regular hexagonal shape, avoiding local stress concentration. When the external pressure continues to increase, it will act on the compression-resistant rod 24. The compression-resistant rod 24 is a high-elastic titanium-nickel shape memory alloy rod. After the compression-resistant rod 24 is compressed, it will induce a martensitic phase transformation. At this time, the stress will hardly increase anymore, but the compression-resistant rod 24 can continue to be compressed, and at the same time, the stress will be stored in the metal phase transformation.

[0039] When the external pressure continues to increase, it will act on the inner pressure-resistant component 3. The inner pressure-resistant component 3 can provide good internal pressure resistance for the whole, so that the whole can withstand pressure again when subjected to a pressure load exceeding that of the outer pressure-resistant component 2, thereby protecting the cable core 4. Due to the increase, the external pressure will act on the inner pressure-resistant tube 31, and the edge of the outer pressure-resistant tube 21 will contact the corner of the inner pressure-resistant tube 31 due to pressure. The inner pressure-resistant tube 31 will buckle and absorb energy. At the same time, it can evenly distribute the external pressure to the entire outer surface through its regular hexagonal arrangement, avoiding local stress concentration. In addition, the staggered layout of the outer pressure-resistant tube 21 and the inner pressure-resistant tube 31 allows the corner of the inner pressure-resistant tube 31 to act directly on the edge of the outer pressure-resistant tube 21. The edge of the outer pressure-resistant tube 21 can disperse and transfer the concentrated stress along its own length. To avoid excessive stress accumulation at a single contact point and reduce the risk of local crushing, the inner pressure tube 31 can mutually restrain and support the outer pressure tube 21 and the inner pressure tube 31 when under pressure, thereby increasing the overall resistance to deformation. In addition, the shear-thickened silicone can harden instantly within milliseconds after the inner pressure tube 31 is buckled under pressure, limiting the collapse to a local area and preventing the inner pressure tube 31 from expanding and collapsing. When the pressure continues to increase, the inner pressure tube 31 will squeeze the inner sheath 32 and the inner pressure skeleton 33. The multiple pressure skeletons 33 arranged in a winding and interlaced manner can improve the stress dispersion ability when the inner sheath 32 is under pressure, avoiding stress concentration on the pressure skeleton 33. Furthermore, the rounded ends of the pressure skeleton 33 can further enhance the stress dispersion effect and prevent excessive stress accumulation at a single contact point.

[0040] In summary, the combined arrangement of the external pressure-resistant component 2 and the internal pressure-resistant component 3 can gradually relieve external pressure, thereby ensuring the normal use of the cable core 4, preventing deformation and breakage of the cable core 4, thus avoiding circuit interruption and ensuring normal power supply.

[0041] It is worth noting that when the external pressure disappears, the pressure-resistant rod 24 changes from martensite back to austenite, generating a restoring force. Therefore, it can provide good recovery capability for the pressure-resistant outer tube 21, allowing the pressure-resistant outer tube 21 to return to its normal pressure-resistant state.

[0042] 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 compression-resistant cable comprising a pair of cable end fittings (1), characterized in that: An external pressure-resistant assembly (2) is provided between the cable ends (1), and an internal pressure-resistant assembly (3) is provided inside the cavity of the external pressure-resistant assembly (2). A cable core (4) is provided on the inner side of the internal pressure-resistant assembly (3) with its two ends respectively connected to the adjacent cable ends (1). The external pressure-resistant component (2) includes a pressure-resistant outer tube (21), which is a hollow tube in the shape of a regular hexagon. Both ends of the pressure-resistant outer tube (21) are fixedly connected to the inner end of the cable end (1). Several protruding grooves (22) are arranged at equal intervals on the outer hexagon of the pressure-resistant outer tube (21). Multiple pressure-resistant protrusions (23) are provided on the outer side of the pressure-resistant outer tube (21). The pressure-resistant protrusions (23) are adapted to the protruding grooves (22), and the multiple pressure-resistant protrusions (23) are all engaged in the protruding grooves (22).

2. The pressure-resistant cable according to claim 1, characterized in that: The inner cavity of the pressure-resistant outer tube (21) is provided with a plurality of pressure-resistant rods (24), and the number of pressure-resistant rods (24) is six. All six pressure-resistant rods (24) are fixedly installed at the inner corner of the pressure-resistant outer tube (21).

3. The pressure-resistant cable according to claim 1, characterized in that: The inner pressure-resistant component (3) includes a pressure-resistant inner tube (31), which is a hollow tube in the shape of a regular hexagon, and the center of the pressure-resistant inner tube (31) coincides with that of the pressure-resistant outer tube (21).

4. The pressure-resistant cable according to claim 3, characterized in that: The corners of the inner pressure-resistant tube (31) and the outer pressure-resistant tube (21) are staggered, and each apex of the inner pressure-resistant tube (31) points to the midpoint of the corresponding side of the outer pressure-resistant tube (21).

5. A pressure-resistant cable according to claim 3, characterized in that: The inner wall of the pressure-resistant inner tube (31) is hollow, and the inner wall of the pressure-resistant inner tube (31) is filled with shear-thickening silicone.

6. A pressure-resistant cable according to claim 3, characterized in that: The inner pressure-resistant assembly (3) also includes an inner sheath (32) disposed in the inner cavity of the pressure-resistant inner tube (31). The inner cavity of the inner sheath (32) is provided with multiple pressure-resistant skeletons (33). The multiple pressure-resistant skeletons (33) are spirally intertwined and disposed on the outside of the cable core (4) and fixedly connected to the outside of the cable core (4).

7. A pressure-resistant cable according to claim 6, characterized in that: The end of the pressure-resistant skeleton (33) away from the cable core (4) is arc-shaped, and the end of the pressure-resistant skeleton (33) away from the cable core (4) is fixedly connected to the inner wall of the inner sheath (32).

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