Bending-resistant buffer cable

Abstract

The utility model discloses an anti-bending buffer cable which comprises a composite outer sheath layer, a composite buffer layer is arranged in the composite outer sheath layer, the composite buffer layer is composed of an elastic buffer body and a reinforcing support layer, an anti-bending reinforcing layer is arranged in the composite buffer layer, and the anti-bending reinforcing layer is composed of an elastic buffer body and a reinforcing support layer. The anti-bending reinforcing layer is composed of reinforcing fibers and supporting grids, a composite insulating layer is arranged in the anti-bending reinforcing layer, and a cable core is arranged in the composite insulating layer, so that the problem that the cable core is damaged due to the fact that bending force is easy to permeate into the cable due to lack of buffering among functional layers of the cable is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a bending-resistant buffer cable. Background Art

[0002] As an important part of the power system, power cables undertake the key task of transmitting and distributing electric energy. With the rapid development of modern society, the demand for electricity is growing, and the application of power cables in various fields is becoming more and more extensive. They are widely used in various fields such as industry, commerce, residence and public facilities to ensure the stability and reliability of power supply. Power cables are usually composed of conductors, insulation layers, sheath layers and other parts, and each part plays an indispensable role. The conductor is the core of the cable and is responsible for transmitting current; the insulation layer isolates the conductor from the external environment to ensure the safe transmission of current inside the cable; the sheath layer protects the cable from external physical damage and environmental erosion.

[0003] For example, the Chinese authorized patent "Anti-bending cable" with announcement number CN217061521U includes a reinforcing core, a conductive layer and a protective layer from the inside to the outside, wherein the conductive layer is composed of a plurality of conductors wound around the reinforcing core in a twisted wire manner, which has the effect of greatly improving the anti-bending performance of the cable.

[0004] Although the above-mentioned prior art can improve the bending resistance of the cable, due to the lack of buffering between the functional layers, the bending force can easily penetrate into the interior of the cable, thereby causing damage to the core. Therefore, it does not meet the existing needs. In this regard, we propose a bending-resistant buffer cable. Utility Model Content

[0005] The utility model aims to provide a bending-resistant buffer cable to solve the problem in the background art that there is a lack of buffering between the functional layers of the cable, which causes the bending force to easily penetrate into the interior of the cable and cause damage to the wire core.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bending-resistant buffer cable, comprising a composite outer sheath layer, a composite buffer layer is arranged inside the composite outer sheath layer, the composite buffer layer is composed of an elastic buffer body and a reinforced support layer, an bending-resistant reinforcement layer is arranged inside the composite buffer layer, the bending-resistant reinforcement layer is composed of reinforced fibers and a supporting grid, a composite insulation layer is arranged inside the bending-resistant reinforcement layer, and a cable core is arranged inside the composite insulation layer.

[0007] Preferably, the composite outer sheath layer includes an anti-ultraviolet layer, a wear-resistant layer and a basic sheath layer, the basic sheath layer is located inside the wear-resistant layer, and the basic sheath layer and the wear-resistant layer are extruded, and the anti-ultraviolet layer is located outside the wear-resistant layer, and the anti-ultraviolet layer and the wear-resistant layer are extruded.

[0008] Preferably, the elastic buffer body is located outside the reinforcing support layer, and the reinforcing support layer is a mesh woven structure.

[0009] Preferably, the reinforcing fibers are located outside the supporting grid, and the reinforcing fibers and the supporting grid, the reinforcing fibers and the composite buffer layer, and the supporting grid and the composite insulating layer are connected by an adhesive layer.

[0010] Preferably, the composite insulating layer comprises a basic insulating layer and a shock absorbing layer, the shock absorbing layer is located outside the basic insulating layer, and the basic insulating layer and the shock absorbing layer are extruded together.

[0011] Preferably, the cable core comprises a conductor, a reinforcing core and a filling layer, the conductors are arranged in at least six groups, and each group of conductors is formed by twisting a number of copper alloy monofilaments, the reinforcing core is located at the center of the cable core and between adjacent conductors, and the filling layer fills the gap between the conductor and the reinforcing core.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with an anti-bending reinforcement layer, which includes reinforcing fibers, a support grid and an adhesive layer. The provision of the anti-bending reinforcement layer can significantly enhance the anti-bending ability of the cable, so that it can maintain a good shape and structural stability when subjected to external forces, and reduce damage caused by bending. By introducing reinforcing fibers and a support grid, the overall mechanical strength of the cable is improved, and it can withstand greater external force impact and extrusion. The anti-bending reinforcement layer can effectively reduce stress concentration and fatigue damage of the cable during bending and vibration, thereby extending the service life of the cable and reducing maintenance costs.

[0014] 2. The utility model is provided with a composite buffer layer. The composite buffer layer includes an elastic buffer body and a reinforced support layer. The composite buffer layer can effectively absorb and disperse external impact force, reduce the stress and vibration of the cable core, thereby protecting the electrical components and structures inside the cable from damage. The combined effect of the elastic buffer body and the reinforced support layer can enhance the bending resistance of the cable, so that it can maintain a good shape and structural stability when subjected to external force. By reducing the impact of external impact force on the cable core, the composite buffer layer can reduce the damage to the cable caused by bending and vibration, thereby extending the service life of the cable.

[0015] 3. The utility model has a composite outer sheath layer, which includes a basic sheath layer, a wear-resistant layer and an anti-ultraviolet layer. The multi-layer structure and high-strength material of the composite outer sheath layer can effectively resist external mechanical damage, such as scratches and extrusion, to protect the internal integrity and electrical performance of the cable. The outer sheath can resist the erosion of the cable by harsh environments, such as high temperature, low temperature, humidity and ultraviolet rays, through the silicone rubber containing anti-ultraviolet stabilizers, to ensure the stable operation of the cable under various environmental conditions. The setting of the wear-resistant layer can significantly reduce the damage to the cable caused by friction and wear, thereby extending the service life of the cable and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 This is an exploded view of the anti-bending reinforcement layer of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the composite outer sheath layer of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the anti-ultraviolet layer of the utility model.

[0021] In the figure: 1. composite outer sheath layer; 11. anti-ultraviolet layer; 12. wear-resistant layer; 13. basic sheath layer; 2. composite buffer layer; 21. elastic buffer body; 22. reinforced support layer; 3. anti-bending reinforcement layer; 31. reinforcing fiber; 32. support grid; 33. adhesive layer; 4. composite insulation layer; 5. cable core; 6. conductor; 7. reinforcing core; 8. filling layer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-5 The utility model provides an embodiment: a bending-resistant buffer cable, comprising a composite outer sheath layer 1, a composite buffer layer 2 is arranged inside the composite outer sheath layer 1, the composite buffer layer 2 is composed of an elastic buffer body 21 and a reinforced support layer 22, an anti-bending reinforcement layer 3 is arranged inside the composite buffer layer 2, the anti-bending reinforcement layer 3 is composed of reinforcing fibers 31 and a supporting grid 32, a composite insulation layer 4 is arranged inside the anti-bending reinforcement layer 3, and a cable core 5 is arranged inside the composite insulation layer 4.

[0024] See also Figure 4 The composite outer sheath layer 1 includes an anti-ultraviolet layer 11, a wear-resistant layer 12 and a basic sheath layer 13. The basic sheath layer 13 is located inside the wear-resistant layer 12, and the basic sheath layer 13 and the wear-resistant layer 12 are extruded. The anti-ultraviolet layer 11 is located outside the wear-resistant layer 12, and the anti-ultraviolet layer 11 and the wear-resistant layer 12 are extruded. The anti-ultraviolet layer 11 is silicone rubber containing an anti-ultraviolet stabilizer to prevent ultraviolet rays from damaging the cable material. The wear-resistant layer 12 is polyurethane made of highly wear-resistant material to enhance the cable's resistance to friction and wear. The basic sheath layer 13 is chlorinated polyethylene, which serves as the main part of the outer sheath and provides basic mechanical protection.

[0025] See also Figure 5 The elastic buffer body 21 is located outside the reinforcing support layer 22, and the reinforcing support layer 22 is a mesh woven structure. The elastic buffer body 21 is a high-elastic polyurethane foam. It has excellent shock absorption and buffering properties, can absorb and disperse external impact force, and reduce the stress on the cable core. The reinforcing support layer 22 is an aluminum alloy, which can provide additional mechanical support to prevent the cable from being excessively deformed or damaged during bending.

[0026] See also Figure 3 The reinforcing fiber 31 is located outside the supporting grid 32, and the reinforcing fiber 31 and the supporting grid 32, the reinforcing fiber 31 and the composite buffer layer 2, and the supporting grid 32 and the composite insulating layer 4 are connected by an adhesive layer 33. The reinforcing fiber 31 is glass fiber, which has excellent bending resistance and fatigue resistance, and can effectively improve the bending resistance of the cable. The supporting grid 32 is engineering plastic, which can disperse external stress and prevent the cable from being excessively deformed when subjected to external force. It can meet the requirements of mechanical strength and has a certain flexibility to adapt to the bending requirements of the cable. The adhesive layer is polyurethane, which ensures that the anti-bending reinforcing fiber 31 and the supporting grid 32 can be tightly combined and form a whole with the composite buffer layer 2 and the composite insulating layer 4.

[0027] Furthermore, the composite insulation layer 4 includes a basic insulation layer and a shock-absorbing layer. The shock-absorbing layer is located outside the basic insulation layer, and the basic insulation layer and the shock-absorbing layer are extruded together. The basic insulation layer is ethylene-propylene rubber, which has good insulation performance, heat resistance and mechanical strength, and can ensure the electrical safety of the cable under normal working conditions. The shock-absorbing layer is silicone, which provides additional buffering effect.

[0028] See also Figure 1 and Figure 2The cable core 5 includes a conductor 6, a reinforcing core 7 and a filling layer 8. There are at least six groups of conductors 6, and each group of conductors 6 is formed by twisting a number of copper alloy monofilaments to increase its flexibility and bending resistance. The reinforcing core 7 is located at the center of the cable core 5 and between adjacent conductors 6 to enhance the overall mechanical strength of the cable core 5 and resist external impact and bending. The filling layer 8 fills the gap between the conductor 6 and the reinforcing core 7 to maintain the roundness and stability of the cable core 5.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bending-resistant buffer cable, comprising a composite outer sheath layer (1), characterized in that: A composite buffer layer (2) is arranged inside the composite outer sheath layer (1), the composite buffer layer (2) is composed of an elastic buffer body (21) and a reinforced support layer (22), an anti-bending reinforcement layer (3) is arranged inside the composite buffer layer (2), the anti-bending reinforcement layer (3) is composed of reinforced fibers (31) and a support grid (32), a composite insulation layer (4) is arranged inside the anti-bending reinforcement layer (3), and a cable core (5) is arranged inside the composite insulation layer (4).

2. The anti-bending buffer cable according to claim 1, characterized in that: The composite outer sheath layer (1) comprises an anti-ultraviolet layer (11), a wear-resistant layer (12) and a basic sheath layer (13); the basic sheath layer (13) is located inside the wear-resistant layer (12), and the basic sheath layer (13) and the wear-resistant layer (12) are extruded; the anti-ultraviolet layer (11) is located outside the wear-resistant layer (12), and the anti-ultraviolet layer (11) and the wear-resistant layer (12) are extruded.

3. The anti-bending buffer cable according to claim 1, characterized in that: The elastic buffer body (21) is located outside the reinforcing support layer (22), and the reinforcing support layer (22) is a mesh woven structure.

4. The anti-bending buffer cable according to claim 1, characterized in that: The reinforcing fibers (31) are located outside the supporting grid (32), and the reinforcing fibers (31) and the supporting grid (32), the reinforcing fibers (31) and the composite buffer layer (2), and the supporting grid (32) and the composite insulating layer (4) are connected via an adhesive layer (33).

5. The anti-bending buffer cable according to claim 1, characterized in that: The composite insulating layer (4) comprises a basic insulating layer and a shock absorbing layer, wherein the shock absorbing layer is located outside the basic insulating layer, and the basic insulating layer and the shock absorbing layer are co-extruded.

6. The anti-bending buffer cable according to claim 1, characterized in that: The cable core (5) comprises a conductor (6), a reinforcing core (7) and a filling layer (8); the conductor (6) is provided in at least six groups, and each group of conductors (6) is formed by twisting a plurality of copper alloy monofilaments; the reinforcing core (7) is located at the center of the cable core (5) and between adjacent conductors (6); and the filling layer (8) is filled in the gap between the conductor (6) and the reinforcing core (7).

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