Anti-impact cable

Abstract

The utility model belongs to the technical field of cable manufacturing, and particularly relates to an anti-impact cable which comprises a plurality of electric conductors, a filling layer wrapping the electric conductors, an inner sheath wrapping the filling layer, an outer sheath wrapping the inner sheath and an armor structure arranged between the inner sheath and the outer sheath. The armoring structure at least comprises a first armoring layer and a second armoring layer, the first armoring layer is provided with a first bending part and a second bending part, the bending direction of the second bending part is opposite to that of the first bending part, and the first bending part and the second bending part are arranged at equal intervals; the second armor layer is provided with third bending parts and fourth bending parts, the bending direction of the fourth bending parts is opposite to that of the third bending parts, and the third bending parts and the fourth bending parts are arranged at equal intervals; the bending directions of the first bending part and the third bending part are opposite, and the first bending part and the third bending part form a buffer cavity.

Description

Technical Field

[0001] The present application belongs to the technical field of cable manufacturing, and in particular, relates to an impact-proof cable. Background Art

[0002] In modern society, cables, as an important medium for power transmission, are widely used in power transmission and other fields. Especially with the popularization of new energy vehicles, the demand for cables is also increasing due to the increasing number of vehicles that need to be charged. Cables are often affected by the external environment during the use of laying, such as impact, extrusion, etc. These factors may cause damage to the cables and affect their normal operation. In order to ensure that the cables are not damaged by impact during transportation, installation and operation, and to ensure their stable operation in harsh environments, it is an urgent problem to be solved in the design and manufacture of cables.

[0003] The armored cables currently on the market usually have a layer of metal armor made of aluminum alloy or steel wire on the outside of the cable sheath, which can improve the strength of the cable and prevent small animals such as mice from biting the cable and causing damage to the cable. However, when designing the current armored cables, their main purpose is to maintain the performance of the cable in a relatively stable environment, such as laying in the sewer. Once it is used in a more complex environment, it will have a greater risk, such as laying in the mining area to provide sufficient power guarantee for mining in the mining area. The environment in which it is located is complex and it is easy to be impacted by external forces, causing the cable to be damaged.

[0004] Based on the above, the present application proposes an armored cable with excellent impact resistance, so as to ensure that the cable will not be damaged in complex environments regardless of external mechanical force impact or internal high-voltage electrical impact. Utility Model Content

[0005] One advantage of the present application is that it provides an impact-proof cable. The impact-proof cable adopts a double-layer armor layer and an inner and outer sheath design to form an elastic impact-resistant area, which can effectively offset the impact force exerted on the cable during operation, comprehensively protect the cable, and improve the impact resistance of the cable.

[0006] Another advantage of the present application is that it provides an impact-resistant cable, which has a second impact-resistant design structure inside the filling layer, that is, a protective reinforcement layer is formed in the middle area of ​​the cable, and the middle of the protective reinforcement layer is hollowed out to form a deformable cavity. The deformable cavity is a deformable space inside the cable when the cable is subjected to a large impact force, and also a deformable space when it is pulled and bent. This design enables the cable to resist not only the impact in the axial direction but also the impact in the radial direction when it is subjected to an impact, thereby improving the impact resistance of the cable.

[0007] Another advantage of the present application is that it provides an impact-proof cable, which improves the impact resistance of the cable without sacrificing other properties of the cable, such as toughness.

[0008] Another advantage of the present application is that it provides an impact-proof cable. Through the dual impact-resistant design and the comprehensive protection design, the cable can maintain stable operation even if it encounters strong impact during operation, and will not be damaged by impact, thereby improving the safety and reliability of the cable operation.

[0009] In order to achieve at least one of the above advantages or other advantages and purposes, according to one aspect of the present application, a shock-resistant cable is provided, which includes a plurality of electrical conductors, a filling layer wrapped outside the electrical conductors, an inner sheath wrapped outside the filling layer, an outer sheath wrapped outside the inner sheath, and an armor structure provided between the inner sheath and the outer sheath; the armor structure includes at least a first armor layer and a second armor layer, wherein

[0010] The first armor layer has a first curved portion and a second curved portion with a curved direction opposite to that of the first curved portion, and the first curved portion and the second curved portion are arranged at equal intervals;

[0011] The second armor layer has a third curved portion and a fourth curved portion with a curved direction opposite to the third curved portion, and the third curved portion and the fourth curved portion are arranged at equal intervals;

[0012] The first curved portion and the third curved portion have bending directions opposite to each other, and the first curved portion and the third curved portion form a buffer cavity.

[0013] In the impact-resistant cable according to the present application, the cross section of the buffer cavity is elliptical.

[0014] In the impact-proof cable described in the present application, an inner sheath convex portion filled in the second bend portion is provided on the outer wall of the inner sheath, and an outer sheath convex portion filled in the fourth bend portion is provided on the inner wall of the outer sheath, and the inner sheath convex portion corresponds to the outer sheath convex portion.

[0015] The impact-resistant cable according to the present application further comprises a protective reinforcement layer, and a plurality of electrical conductors are arranged around the protective reinforcement layer at equal intervals.

[0016] In the impact-resistant cable described in the present application, a deformation cavity is provided on the protective reinforcement layer.

[0017] In the impact-proof cable according to the present application, a plurality of reinforcing ribs are provided on the inner wall of the deformation cavity.

[0018] In the impact-resistant cable according to the present application, the outer wall of the protective reinforcement layer extends outward to form a plurality of partitions for dividing the filling layer.

[0019] In the impact-resistant cable according to the present application, a plurality of reinforcement bodies are provided in the filling layer.

[0020] Further objectives and advantages of the present application will be fully reflected through understanding of the following description and drawings.

[0021] These and other objects, features and advantages of the present application are fully reflected in the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the impact-proof cable of the present application.

[0023] Figure 2 for Figure 1 Front view of the medium impact cable.

[0024] Figure 3 for Figure 2 Cross-sectional view of AA of the medium impact-proof cable.

[0025] Figure 4 for Figure 1 Exploded view of the medium impact protection cable. DETAILED DESCRIPTION

[0026] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the applicant to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0027] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0028] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the present application. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0029] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to include plural forms, unless the context clearly indicates an exception. It will also be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements, or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0030] Application Overview

[0031] The working environment of the cable varies greatly during use. The existing cables have weak impact resistance in harsh working environments, and the cables are easily damaged, which affects the power supply. This application changes the original design structure of the cable and adopts a double armor layer design. While improving the strength of the cable itself, it optimizes the structural design of the double armor layer and the interaction between the double armor layers. When the cable is impacted, the elastic deformation of the double armor layer absorbs the impact force and protects the internal structure of the cable from damage. The internal structure of the cable is further optimized to achieve another elastic protection structure in addition to the double armor layer. This structure not only improves the impact resistance of the cable, but also improves the bendability of the cable.

[0032] The following examples are used to describe the laser projector of the present application in detail:

[0033] Reference Manual Attached Figure 1 To Attachment Figure 4 , an impact-resistant cable according to one embodiment of the present application is illustrated; wherein, the impact-resistant cable includes a plurality of conductors 10, a filling layer 20, a protective reinforcement layer 30, an inner sheath 40, a first armor layer 50, a second armor layer 60 and an outer sheath 70, the conductors 10 are copper conductors, and the conductors 10 are the power transmission core of the entire cable, and the electric charge is transmitted from one end to the electrical equipment through the conductors 10; the number of the conductors 10 described in the present application is four, of course, in other embodiments, the number of the conductors 10 can be adjusted according to demand, for example, the number of the conductors 10 is three or five, and the specific number is not specifically limited in the present application.

[0034] An insulating layer 11 is sheathed around each electric conductor 10. The insulating layer 11 is made of polyvinyl chloride or cross-linked polyvinyl chloride. The insulating layer 11 protects the outflow of electric charges from the cable and reduces the electric loss during power transmission. An additional layer of polyethylene is sheathed outside the insulating layer 11 to form a first layer of protective layer 12 for the electric conductor 10, which protects the electric conductor 10 from being damaged. A ground wire protective layer 13 made of copper metal is sheathed outside the protective layer 12. The ground wire protective layer 13 is used to protect the cable and is used as the ground wire of the cable.

[0035] The ground wire protection layer 13 and the conductor 10 protected by the ground wire protection layer 13 are surrounded by a filling layer 20, and the filling layer 20 is made of glass fiber. A plurality of reinforcing bodies 21 made of nylon rope are arranged in the filling layer 20, and the design of the reinforcing body 21 can enhance the overall toughness of the cable and facilitate the bending of the cable. The protective reinforcement layer 30 divides the filling layer 20 into four parts, and each protective reinforcement layer 30 corresponds to an electric conductor 10 independently. The design of the protective reinforcement layer 30 improves the cable when it is subjected to a strong impact, and provides space for the conductor to move in a small range, so that when a certain conductor 10 is displaced due to impact and extrusion, other conductors 10 will not be affected. At the same time, after the impact ends, the conductor 10 is reset under the internal force of the protective reinforcement layer 30 to maintain the integrity of the cable.

[0036] Specifically, the protective reinforcement layer 30 is made of a high-strength rubber material as a whole, and the middle area thereof is cylindrical, which is located in the most central area of ​​the cross section of the entire cable. The middle area of ​​the protective reinforcement layer 30 has a deformation cavity 31. The design of the deformation cavity 31 increases the space for the protective reinforcement layer 30 when it is deformed, reduces the manufacturing cost of the entire cable, and also facilitates the bending of the cable. A plurality of reinforcing ribs 311 are designed on the inner wall of the deformation space. The design of the reinforcing ribs 311 increases the strength of the protective reinforcement layer 30 and provides the required elastic force for the protective reinforcement layer 30 when it is reset. The outer wall of the protective reinforcement layer 30 extends outward to form a plurality of partitions 32 for dividing the filling layer 20. The end of the partition 32 is designed with an extended extension 321. The extension 321 increases the contact area between the protective reinforcement layer 30 and the filling layer 20, thereby increasing the connection strength between the entire cable structure.

[0037] In addition, in order to cope with complex working environments, the cable of the present application is designed with a two-layer armor structure compared to traditional cables, and the two-layer armor structure interacts with the inner sheath 40 and the outer sheath 70 to form a protective structure with high strength and high buffering. Specifically, the two armor structures are a first armor layer 50 close to the side of the conductor 10 and a second armor layer 60 away from the side of the conductor 10. Figure 3 As shown, the cross-sectional view formed after the first armor layer 50 is cut along the length direction of the cable is wavy, that is, the thickness of each part of the first armor layer 50 in the cross section along the length direction of the cable is the same. The first armor layer 50 is partially recessed toward the second armor layer 60 to form a first bend 51, and the side adjacent to the first bend 51 is arched toward the electrical conductor 10 of the cable to form a second bend 52; the first bend 51 and the second bend 52 in the first armor layer 50 are arranged equidistantly along the length direction of the cable.

[0038] In addition, the second armor layer 60 is sleeved outside the first armor layer 50, and the structure of the second armor layer 60 is similar to that of the first armor layer 50. Figure 3 As shown, the cross-sectional view formed after the second armor layer 60 is cut along the length direction of the cable is wavy. The second armor layer 60 is partially arched in the direction away from the first armor layer 50 to form a third bend 61. The third bend 61 corresponds to the first bend 51, and a buffer cavity 560 with an elliptical cross-section is formed between the third bend 61 and the first bend 51. When the cable is impacted, the third bend 61 and the first bend 51 constituting the buffer cavity undergo elastic deformation, thereby offsetting the impact force and protecting the cable from serious damage. The second armor layer 60 is partially arched toward a square close to the first armor layer 50 to form a fourth bend 62, and the fourth bend 62 is in contact with the second bend 52. As shown Figure 3 As shown, the third bending portion 61 and the fourth bending portion 62 are arranged at equal intervals along the length direction of the cable.

[0039] like Figure 3 As shown, the inner sheath 40 is used to protect the cable to prevent the first armor layer 50 from causing damage to the inside of the cable. The inner sheath 40 is made of cross-linked polyvinyl chloride. The outer wall of the inner sheath 40 is convex at the position corresponding to each second bend 52 to form an inner sheath convex portion 41. The outer sheath 70 is sleeved on the outside of the second armor layer 60. The outer sheath 70 is also made of cross-linked polyvinyl chloride. The inner wall of the outer sheath 70 is convex corresponding to each fourth bend 62 to form an outer sheath convex portion 71. The inner sheath convex portion 41 corresponds to the outer sheath convex portion 71. Therefore, when the cable is impacted, the inner sheath convex portion 41 and the outer sheath convex portion 71 elastically act on each other to offset the impact force and protect the cable from damage. At the same time, this structural method also improves the scratch resistance and wear resistance of the cable, further improves the strength of the cable, and improves the working range of the cable.

[0040] The impact-resistant cable of the present application can effectively improve the impact resistance of the cable through unique structural design and material selection, ensure its stable operation in harsh environments, meet the market demand for high-performance cables, and have a wider range of application scenarios. In addition, the impact-resistant cable of the present application improves the impact resistance without sacrificing other properties of the cable, such as flexibility and bendability, and has a higher use value.

[0041] It should be noted that in the apparatus and method of the present application, the components or steps in different embodiments can be decomposed and / or recombined without departing from the principles of the present application. Such decomposition and / or recombination should be considered to be included in the application concept of the present application.

[0042] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

Claims

1. An impact-resistant cable, comprising a plurality of electrical conductors, a filling layer wrapped around the electrical conductors, an inner sheath wrapped around the filling layer, an outer sheath wrapped around the inner sheath, and an armor structure disposed between the inner sheath and the outer sheath; wherein: The armor structure comprises at least a first armor layer and a second armor layer, wherein The first armor layer has a first curved portion and a second curved portion with a curved direction opposite to that of the first curved portion, and the first curved portion and the second curved portion are arranged at equal intervals; The second armor layer has a third curved portion and a fourth curved portion with a curved direction opposite to the third curved portion, and the third curved portion and the fourth curved portion are arranged at equal intervals; The first curved portion and the third curved portion have bending directions opposite to each other, and the first curved portion and the third curved portion form a buffer cavity.

2. A shock-proof cable according to claim 1, wherein: The cross section of the buffer cavity is elliptical.

3. A shock-resistant cable according to claim 1, wherein: An inner sheath convex portion filled in the second curved portion is provided on the outer wall of the inner sheath, and an outer sheath convex portion filled in the fourth curved portion is provided on the inner wall of the outer sheath, and the inner sheath convex portion corresponds to the outer sheath convex portion.

4. The impact-resistant cable according to claim 1, wherein: A protection reinforcement layer is also included, and a plurality of electrical conductors are arranged around the protection reinforcement layer at equal intervals.

5. A shock-resistant cable according to claim 4, wherein: A deformation cavity is provided on the protection reinforcement layer.

6. A shock-resistant cable according to claim 5, wherein: A plurality of reinforcing ribs are arranged on the inner wall of the deformation cavity.

7. The impact-resistant cable according to claim 4, wherein: The outer wall of the protection reinforcement layer extends outward to form a plurality of partitions for dividing the filling layer.

8. The impact-resistant cable according to claim 1, wherein: A plurality of reinforcing bodies are arranged in the filling layer.

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