CN219738571U - A kind of bending-resistant flexible composite cable - Google Patents

Abstract

The utility model discloses a bending-resistant flexible composite cable, which includes a wire core group. Hollow partitions for separation and support are provided between the wire core groups, and the ends of the hollow partitions are connected with sheaths for protection. , and there is a filling area between the hollow partition and the sheath to protect the wire core group. The bending-resistant flexible composite cable will resist and buffer the bending force to achieve the effect of buffering the bending and avoid damage to the internal cable core caused by excessive bending of the cable. This principle is like injecting into long balloons or empty rubber strips. Air-sealed, you will find that the bending angle is limited when bending it, and this anti-bending design not only protects the cable from over-bending, but also avoids increasing the weight of the cable, which in turn affects the use and installation of the cable. .

Description

A kind of bending-resistant flexible composite cable

Technical field

The utility model relates to the technical field of cable equipment, specifically a bending-resistant flexible composite cable.

Background technique

A cable is usually a rope-like cable twisted by several or groups of conductors (at least two in each group). Each group of conductors is insulated from each other and is often twisted around a center, with the entire outside covered with a high The insulating covering layer of the cable has the characteristics of being energized on the inside and insulating on the outside.

With the improvement of the level of science and technology and the continuous development of the cable industry, composite cables have matured and been used. Composite material cables are scientific terms, especially used to reduce consumption losses. Transportation and distribution cables made of composite materials, Composite materials have the advantages of high strength, good designability, no creep, corrosion resistance and ease of use. In terms of fire protection performance, the oxygen index of the developed composite cable bracket is greater than or equal to 70%, which meets the requirements of fire protection, low smoke and halogen-free. , non-toxic safety requirements.

However, during the installation process of existing composite cables, it is necessary to bend the composite cables at some locations. During the bending process of the cable, if the bending force is too high, it is easy to cause the conductive core inside the cable to break. , or when the cable is bent by external force, the composite cable is impacted and causes internal damage, which makes it impossible to continue transmitting electrical energy.

In response to the above problems, there is an urgent need to carry out innovative designs based on the original cables.

Utility model content

The technical solution of the present utility model is aimed at the technical problem that the existing technical solutions are too single, and provides a bending-resistant flexible composite cable that is significantly different from the existing technical solution to solve the problem in the above-mentioned background technology that easily causes conductive single cells inside the cable. When the core breaks, or when the cable is bent due to external force, the composite cable is impacted, causing internal damage, etc., which makes it impossible to continue transmitting electrical energy.

In order to achieve the above purpose, the present invention provides the following technical solution: a bending-resistant flexible composite cable, including a core group, with hollow partitions for separation and support provided between the core groups, and the ends of the hollow partitions The outer wall of the sheath is connected with a sheath for protection, and a filling area for protecting the wire core group is provided between the hollow partition and the sheath. The outer wall of the sheath is covered with a protective layer, and the outer wall of the protective layer is nested and resistant to folding. The reinforced mesh is bent, and the outer wall of the reinforced mesh is covered with an outer layer that further protects the wire core group and buffers the bending.

Preferably, the outer wall of the wire cores of each of the wire core groups is covered with an insulating layer made of silicone material.

Preferably, the hollow partition is made of PET material, and the contact area between the end of the hollow partition and the sheath is arranged in an arc shape.

Preferably, the filling area is filled with PO material.

Preferably, the protective layer is made of polyurethane material.

Preferably, the reinforcing rib mesh is a "well"-shaped metal mesh layer woven from copper wire and metal.

Preferably, the outer cladding is made of asphalt material, and a number of air chambers for mitigating bending are arranged at equal angles in the outer cladding, and barrier films for sealing air are arranged at equal angles in the air chambers.

Compared with the existing technology, the beneficial effects of the present utility model are: the bending-resistant flexible composite cable uses a number of air cavities arranged at equal angles inside the outer cladding, so that when the cable is bent, the bending force acts on the air The air cavity is bent due to force on the cavity, and the air in the air cavity flows to both ends. At this time, due to the equally spaced baffles in the air cavity, the air in the air cavity is blocked by the baffles and cannot be discharged from both ends. In turn, it will resist and buffer the bending force to achieve the effect of buffering the bending and avoid damage to the internal cable core caused by excessive bending of the cable. This principle is like injecting air seal into a long balloon or empty rubber strip and bending it. You will find that the bending angle is limited, and this anti-bending design not only protects the cable from over-bending, but also avoids increasing the weight of the cable, which in turn affects the use and installation of the cable.

The well-shaped reinforcement mesh is woven by copper wire and metal. Since the copper wire has a certain degree of flexibility, when the cable is bent by external force, the cable will not be unable to bend slightly due to the stiffness of the reinforcement mesh. This affects the installation of the cable, and the reinforcement mesh is integrated into a whole by staggering horizontally and vertically. When the copper wires distributed horizontally and vertically are subjected to external forces, they will interact with each other to help alleviate the bending force, preventing the cable from being too soft and when subjected to external force. When the external force is excessive, bending will cause damage to the internal cable core, and the criss-crossing reinforcement mesh and strip-shaped air cavity can effectively alleviate and limit the bending of the cable in different areas to avoid excessive bending of the cable. Damaged by bending.

Through the setting of hollow partitions, the sheath and protective layer outside the cable core can be supported and limited, and the bending resistance of the cable is improved to a certain extent, which is beneficial to the construction personnel in installing and arranging the cable settings. Through the protection of polyurethane material The layer can improve the fire resistance of the cable.

Description of the drawings

Figure 1 is a schematic diagram of the front cross-sectional structure of the utility model;

Figure 2 is a schematic structural diagram of the front cross-section of the hollow partition of the present utility model;

Figure 3 is a schematic diagram of the front cross-sectional structure of the outer cladding of the present invention;

Figure 4 is a schematic side cross-sectional structural diagram of the outer cladding of the present invention.

In the picture: 1. Core group; 2. Hollow partition; 3. Filling area; 4. Sheath; 5. Protective layer; 6. Reinforcement mesh; 7. Outer cladding.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Please refer to Figures 1-4. The present utility model provides a technical solution: a bending-resistant flexible composite cable, including a core set 1, a hollow partition 2, a filling area 3, a sheath 4, a protective layer 5, and a reinforcing rib. A hollow partition 2 for separation and support is provided between the net 6, the outer cladding 7, and the core group 1, and the end of the hollow partition 2 is connected with a sheath 4 for protection, and the hollow partition 2 and the sheath 4 There is a filling area 3 for protecting the wire core group 1. The outer wall of the sheath 4 is covered with a protective layer 5. The outer wall of the protective layer 5 is embedded with a bending-resistant reinforcing rib net 6, and the outer wall of the reinforcing rib net 6 is covered with There is an outer layer 7 for further protecting the wire core group 1 and buffering and bending.

The outer wall of the wire cores of each wire core group 1 is covered with an insulating layer made of silicone material.

The hollow partition 2 is made of PET material, and the contact area between the end of the hollow partition 2 and the sheath 4 is arranged in an arc shape.

Filling area 3 is filled with PO material.

The protective layer 5 is made of polyurethane material.

The reinforcing rib mesh 6 is a "well"-shaped metal mesh layer woven from copper wire and metal.

The outer cladding 7 is made of asphalt material, and a number of air cavities for mitigating bending are arranged in the outer cladding 7 at equal angles, and baffles for sealing the air are arranged at equal angles in the air cavities.

Working principle: As shown in Figure 1, the staff transports the composite cable to the installation area for installation. When a certain area of the cable needs to be bent to a certain extent for installation, when this area of the cable is subjected to bending force, the cable is There are several air cavities arranged at equal angles inside the outer cladding, so that when the cable is bent, the bending force acts on the air cavity to bend the air cavity, and the air in the air cavity flows to both ends. At this time, due to The baffles arranged at equal intervals in the air cavity prevent the air in the air cavity from being discharged from both ends by the baffles, thereby resisting and buffering the bending force to achieve the effect of buffering the bending and preventing excessive bending of the cable from causing damage to the internal cables. Damage to the core, etc.;

At the same time, the well-shaped reinforcement mesh made of copper wires and metal braiding inside the cable in the bending area is also subject to bending force. Since the copper wires have a certain degree of flexibility, the cable will bend to a certain extent, but with the rest of the The parts, and the criss-crossing arrangement, will interact with each other to help alleviate the bending force without bending too much to cause damage to the internal cable core and avoid affecting the bending requirements for cable installation. Through the criss-crossing reinforcement mesh and strips The air cavities cooperate with each other. When the cable is bent in different areas, it can be effectively relieved and restricted to avoid damage to the cable due to excessive bending. Moreover, asphalt has strong corrosion resistance and waterproofness, further improving the performance of the cable. service life;

Through the setting of hollow partitions, the sheath and protective layer outside the cable core can be supported and limited, and the bending resistance of the cable is improved to a certain extent, which is beneficial to the construction personnel in installing and arranging the cable settings. Through the protection of polyurethane material The layer can improve the fire resistance of the cable, which is how the bend-resistant flexible composite cable works.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. , substitutions and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a flexible composite cable resistant to buckling, includes sinle silk group (1), its characterized in that: the cable core is characterized in that a hollow partition plate (2) used for separating and supporting is arranged between the cable core groups (1), the end portions of the hollow partition plate (2) are connected with a protective sleeve (4) used for protecting, a filling area (3) used for protecting the cable core groups (1) is arranged between the hollow partition plate (2) and the protective sleeve (4), a protective layer (5) is coated on the outer wall of the protective sleeve (4), a reinforcing rib net (6) which is nested and resistant to bending is arranged on the outer wall of the protective layer (5), and an outer wrapping layer (7) used for protecting, buffering and bending the cable core groups (1) is coated on the outer wall of the reinforcing rib net (6).

2. A flex resistant composite cable according to claim 1 wherein: and the outer wall of each wire core of the wire core group (1) is coated with an insulating layer made of silica gel materials.

3. A flex resistant composite cable according to claim 1 wherein: the hollow partition board (2) is made of PET, and the contact area between the end part of the hollow partition board (2) and the sheath (4) is arc-shaped.

4. A flex resistant composite cable according to claim 1 wherein: and the filling area (3) is filled with PO material.

5. A flex resistant composite cable according to claim 1 wherein: the protective layer (5) is made of polyurethane materials.

6. A flex resistant composite cable according to claim 1 wherein: the reinforcing rib net (6) is a well-shaped metal net layer formed by weaving copper wires and metal.

7. A flex resistant composite cable according to claim 1 wherein: the outer cladding (7) is made of asphalt, a plurality of air cavities for relieving bending are formed in the inner side and the outer cladding (7) at equal angles, and blocking films for sealing air are arranged in the air cavities at equal angles.