Enhanced polypropylene optical cable tearing rope insulation structure

Abstract

The utility model relates to the technical field of cable manufacturing, in particular to an enhanced polypropylene optical cable tearing rope insulation structure, which comprises a protective sleeve, four insulation grids are arranged in the protective sleeve, the four insulation grids are arranged on the inner side of the protective sleeve in an annular array mode, and the enhanced polypropylene optical cable tearing rope insulation structure further comprises an insulation layer, a supporting sleeve, a preformed hole and an inner core sleeve; the inner core sleeve is fixedly mounted on the opposite sides of the four insulating grids; wherein the inner core sleeve and the insulating grating are made of the same material and are connected in a hot melting manner, and the central reinforcing piece penetrates through the inner side of the inner core sleeve; the preformed hole is formed in the insulating grating; wherein the preformed hole is parallel to the central reinforcing piece, and an optical fiber bundle penetrates through the preformed hole; the supporting sleeves are arranged between the adjacent insulating grids; wherein the supporting sleeve is filled with a cable core filling layer, and filling ropes are arranged in the cable core filling layer. The utility model solves the problem that the optical fiber in the optical cable is easy to break when being pulled when the prior art is applied to optical cable insulation.

Description

Technical Field

[0001] The utility model relates to the technical field of cable production, in particular to an enhanced polypropylene optical cable tearing rope insulation structure. Background Technique

[0002] Cables are a means of transmission that can carry and guide the flow of energy, which can be electrical energy, light energy or other forms of signals. The cable family includes two main categories: cables and optical cables. Cables are mainly used to transmit electrical energy or electrical signals, while optical cables are used to transmit optical signals and are commonly found in data communication networks. Cables enable electrical energy and information to be transmitted efficiently and safely between different locations, and they are an indispensable part of modern communication infrastructure. Cables are widely used in many fields such as telecommunications networks, power transmission, industrial automation, and residential and commercial buildings. With the progress of technology, the design and materials of cables are constantly innovating to meet higher transmission rates, larger bandwidths, and stronger anti-interference capabilities.

[0003] After a large number of searches, the publication number is CN218274015, which discloses a cable with a double insulation effect for power equipment, including a conductor, an insulation protection sleeve arranged at a radially outer position relative to the conductor, a filling layer arranged at a radially outer position relative to the insulation protection sleeve, a flame retardant layer arranged at a radially outer position relative to the filling layer, an insulation isolation component arranged on the inner wall of the filling layer, and an outer protection sleeve fixedly installed on the outer wall of the flame retardant layer.

[0004] On the basis of the original insulation structure, the above device is provided with an insulation isolation component for double insulation protection. When a large amount of heat is generated after the cable operates for a long time and damages the insulation sleeve, the insulation isolation component plays a role in insulating and isolating each conductor to prevent the conductors from contacting each other and ensure the normal use of the cable. Compared with the past, the insulation effect and the use safety are improved. However, since the toughness condition of the conductors in the cable is much better than that of the optical fibers, when the above technology is directly used to improve the insulation of the optical cable, the optical fibers inside the optical cable will deform and break along with the insulation isolation component when the optical cable bears the same tensile force. Therefore, an enhanced polypropylene optical cable tearing rope insulation structure is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an enhanced polypropylene optical cable tearing rope insulation structure, which has the advantages of excellent insulation and high tensile strength for the optical cable, and solves the problem that the optical fibers inside the optical cable are prone to breakage when being pulled in the prior art application of optical cable insulation.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An enhanced polypropylene optical cable tearing rope insulation structure, including a protective sleeve, inside which there is an insulation grid. The number of insulation grids is four, and the four insulation grids are arranged in a circular array on the inner side of the protective sleeve. It also includes a support sleeve, a reserved hole, and an inner core sleeve;

[0007] The inner core sleeve is fixedly installed on the opposite side of the four insulation grids;

[0008] Among them, the inner core sleeve is made of the same material as the insulation grid and is connected by hot melting. A central strengthening member passes through the inside of the inner core sleeve;

[0009] The reserved hole is opened in the insulation grid;

[0010] Among them, the reserved hole is parallel to the central strengthening member, and an optical fiber bundle passes through the reserved hole;

[0011] The support sleeve is arranged between adjacent insulation grids;

[0012] Among them, the support sleeve is filled with a cable core filling layer, and a filling rope is arranged in the cable core filling layer.

[0013] Preferably, the protective sleeve is designed with polyethylene material. A shielding layer is arranged on the inner side of the protective sleeve. The shielding layer is designed with aluminum foil braiding and is attached to the inner side of the protective sleeve. In the design, the protective sleeve uses polyethylene material, which has excellent chemical corrosion resistance and wear resistance, providing a strong outer protection for the optical cable. The shielding layer on the inner side is composed of aluminum foil braiding, providing an efficient electromagnetic shielding effect, protecting the internal components of the optical cable from external electromagnetic interference, and ensuring the stability and security of signal transmission.

[0014] Preferably, the insulation grid is designed with polypropylene material. The optical fiber bundle passing through the insulation grid is parallel to the central strengthening member. In the design, the insulation grid uses polypropylene material, taking advantage of the high insulation and light weight characteristics of polypropylene, not only ensuring the electrical safety performance of the optical cable, but also helping to reduce the overall weight of the optical cable. The optical fiber bundle passing through the insulation grid is arranged in parallel with the central strengthening member, which helps to keep the optical fibers neat and stable and reduce the mutual interference between the optical fibers.

[0015] Preferably, the length of the inner core sleeve matches the length of the insulation grid, and the inner core sleeve is arranged at the center of the protective sleeve. In the design, the length of the inner core sleeve is precisely matched with the insulation grid, ensuring the compactness and symmetry of the structure. The inner core sleeve is arranged at the center of the protective sleeve, providing precise positioning and an additional protective layer for the optical fiber bundle, enhancing the mechanical stability and tensile resistance of the optical cable.

[0016] Preferably, the outer wall of the support sleeve is adhesively installed with the insulating grid and the inner core sleeve, and the length of the support sleeve matches the length of the insulating grid. In the design, the support sleeve is fixed to the insulating grid and the inner core sleeve by adhesive bonding. This installation method ensures the tight fit between components and the integrity of the structure. The length of the support sleeve matches the insulating grid, providing uniform support for the cable core filling layer and enhancing the compression resistance and impact resistance of the optical cable.

[0017] Preferably, the cable core filling layer is made by mixing water-absorbing powder and resin matrix. In the design, the cable core filling layer is made of a mixture of water-absorbing powder and resin matrix. This material combination not only provides good water-blocking performance but also enhances the mechanical strength and environmental adaptability of the optical cable, ensuring stable performance even in a humid environment.

[0018] Preferably, the filling rope is designed with nylon material, and the length of the filling rope is greater than the length of the insulating grid. In the design, the filling rope is made of nylon material, which is known for its high strength and wear resistance. The length of the filling rope is greater than the length of the insulating grid, providing additional protection and buffering, and helping to reduce potential damage to the optical fiber when the optical cable is subjected to external forces.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] In the present utility model, the protective sleeve and the insulating grid provide a double insulating layer. The protective sleeve is made of polyethylene material, which has good electrical insulation and chemical stability. The insulating grid is made of polypropylene material, further enhancing the insulation performance. The inner core sleeve is made of the same material as the insulating grid and uses a hot-melt connection technology. This connection method ensures the firmness and insulation of the connection point, avoiding a decrease in insulation performance caused by poor connection. Four insulating grids are arranged in a circular array inside the protective sleeve, providing uniform insulation protection for the optical fiber bundle. At the same time, this structure helps to disperse the pulling force and reduce the direct pulling on the optical fiber. The central strengthening member passes through the inner core sleeve and is parallel to the reserved hole. This design enhances the mechanical strength of the optical cable, enabling the central strengthening member to effectively share and resist external forces when the optical cable is pulled. The support sleeve is arranged between adjacent insulating grids and is filled with a cable core filling layer. This design provides additional support and buffering for the optical cable, helping to protect the optical fiber bundle from directly bearing the pulling force when stressed. A filling rope is arranged inside the cable core filling layer. This filling rope is made of nylon material, which has high strength and toughness and can further absorb and disperse the pulling force to protect the optical fiber from damage. The reserved hole is parallel to the central strengthening member, ensuring the correct position of the optical fiber bundle in the optical cable, reducing the bending and stretching of the optical fiber when stressed, and reducing the risk of fracture, achieving the effect of enabling the optical cable to have excellent insulation while having high tensile strength. Description of the Drawings

[0021] Figure 1 It is the front view structural schematic diagram of the present utility model;

[0022] Figure 2 Schematic diagram of the installation structure of the insulating grid of the present utility model;

[0023] Figure 3 Schematic diagram of the installation structure of the filling rope of the present utility model;

[0024] Figure 4 Front view structure schematic diagram of the present utility model.

[0025] In the figure: 1. protective sleeve; 2. shielding layer; 3. support sleeve; 4. cable core filling layer; 5. optical fiber bundle; 6. central strengthening member; 7. filling rope; 8. insulating grid; 9. reserved hole; 10. inner core sleeve. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, an embodiment provided by the present utility model: an enhanced polypropylene optical cable tearing rope insulation structure, including a protective sleeve 1, an insulating grid 8 is provided inside the protective sleeve 1, the number of insulating grids 8 is four, and the four insulating grids 8 are arranged in a circular array on the inner side of the protective sleeve 1. It further includes a support sleeve 3, a reserved hole 9 and an inner core sleeve 10;

[0029] Specifically, the protective sleeve 1 and the insulating grid 8 provide a double insulation layer. The protective sleeve 1 is made of polyethylene, which has good electrical insulation and chemical stability. The insulating grid 8 is made of polypropylene, further enhancing the insulation performance. The inner core sleeve 10 is made of the same material as the insulating grid 8 and uses a hot melt connection technology. This connection method ensures the firmness and insulation of the connection point, avoiding the decline of insulation performance caused by poor connection. The four insulating grids 8 are arranged in a circular array on the inner side of the protective sleeve 1, providing uniform insulation protection for the optical fiber bundle 5. At the same time, this structure helps to disperse the pulling force and reduce the direct pulling on the optical fiber. The central strengthening member 6 passes through the inner core sleeve 10 and is parallel to the reserved hole 9. This design enhances the mechanical strength of the optical cable. When the optical cable is pulled, the central strengthening member 6 can effectively share and resist the external force. The support sleeve 3 is arranged between adjacent insulating grids 8 and is filled with a cable core filling layer 4. This design provides additional support and buffering for the optical cable, helping to protect the optical fiber bundle 5 from directly bearing the pulling force when stressed. A filling rope 7 is arranged in the cable core filling layer 4. This filling rope 7 is made of nylon, which has high strength and toughness and can further absorb and disperse the pulling force to protect the optical fiber from damage. The reserved hole 9 is parallel to the central strengthening member 6, ensuring the correct position of the optical fiber bundle 5 in the optical cable, reducing the bending and stretching of the optical fiber when stressed, and reducing the risk of fracture, achieving the effect of excellent insulation and high tensile strength of the optical cable.

[0030] Embodiment 2

[0031] To improve the tensile strength of the optical cable, as Figure 1 、 Figure 2 and Figure 4 shown, in this embodiment, the protective sleeve 1 is designed with polyethylene material. A shielding layer 2 is provided on the inner side of the protective sleeve 1. The shielding layer 2 is designed with aluminum foil braiding and is attached to the inner side of the protective sleeve 1. In the design, the protective sleeve 1 is made of polyethylene material, which has excellent chemical corrosion resistance and wear resistance, providing a strong outer layer protection for the optical cable. The inner shielding layer 2 is composed of aluminum foil braiding, providing an efficient electromagnetic shielding effect, protecting the internal components of the optical cable from external electromagnetic interference, and ensuring the stability and security of signal transmission.

[0032] Furthermore, the insulating grid 8 is designed with polypropylene material. The optical fiber bundle 5 passing through the insulating grid 8 is parallel to the central strengthening member 6. In the design, the insulating grid 8 is made of polypropylene material. Utilizing the high insulation and light weight characteristics of polypropylene, it not only ensures the electrical safety performance of the optical cable but also helps to reduce the overall weight of the optical cable. The optical fiber bundle 5 passing through the insulating grid 8 is arranged in parallel with the central strengthening member 6. This design helps to keep the optical fibers neat and stable and reduces the mutual interference between the optical fibers.

[0033] Further, the length of the inner core sleeve 10 matches the length of the insulating grid 8, and the inner core sleeve 10 is disposed at the center of the protective sleeve 1. In the design, the length of the inner core sleeve 10 is precisely matched with the insulating grid 8, ensuring the compactness and symmetry of the structure. The inner core sleeve 10 is disposed at the center of the protective sleeve 1, providing precise positioning and an additional protective layer for the optical fiber bundle 5, enhancing the mechanical stability and tensile resistance of the optical cable.

[0034] Further, the filling cord 7 is designed with nylon material, and the length of the filling cord 7 is greater than the length of the insulating grid 8. In the design, the filling cord 7 is made of nylon material, which is known for its high strength and wear resistance. The length of the filling cord 7 is greater than the length of the insulating grid 8, providing additional protection and buffering, and helping to reduce the potential damage to the optical fiber when the optical cable is subjected to external forces.

[0035] Embodiment III

[0036] To improve the impact resistance and waterproof performance of the optical cable, as Figure 1 、 Figure 3 and Figure 4 shown, in this embodiment, the outer wall of the support sleeve 3 is adhesively installed with the insulating grid 8 and the inner core sleeve 10, and the length of the support sleeve 3 matches the length of the insulating grid 8. In the design, the support sleeve 3 is fixed to the insulating grid 8 and the inner core sleeve 10 by adhesive bonding. This installation method ensures the close fit between components and the integrity of the structure. The length of the support sleeve 3 matches the insulating grid 8, providing uniform support for the cable core filling layer 4 and enhancing the compression resistance and impact resistance of the optical cable.

[0037] Further, the cable core filling layer 4 is made by mixing water-absorbing powder and resin matrix. In the design, the cable core filling layer 4 is made of a mixture of water-absorbing powder and resin matrix. This material combination not only provides good water-blocking performance but also enhances the mechanical strength and environmental adaptability of the optical cable, ensuring that the optical cable can maintain stable performance in a humid environment.

[0038] When the utility model is in use, four insulating grids 8 are hot-melted and arranged on the outer side of the inner core sleeve 10 in an annular array. The central reinforcing member 6 is passed through the inner side of the inner core sleeve 10 to ensure that its position is centered and parallel to the reserved hole 9. The optical fiber bundle 5 is passed through the reserved hole 9 to ensure that the optical fiber bundle 5 is parallel to the central reinforcing member 6 and is not damaged. The filling rope 7 is inserted into the support sleeve 3 and is made of nylon. At the same time, it is ensured that the length of the filling rope 7 is greater than the length of the insulating grid 8. The cable core filling layer 4 is filled in the support sleeve 3. The filling layer is made of a mixture of water-absorbing powder and resin matrix and is ensured to be evenly filled in the support sleeve 3. The support sleeve 3 filled with the cable core filling layer 4 and the filling rope 7 is installed between adjacent insulating grids 8, and it is ensured that the outer wall of the support sleeve 3 is adhesively installed with the insulating grid 8 and the inner core sleeve 10. The aluminum foil braided shielding layer 2 is installed on the outer side of the support sleeve 3, and then the protective sleeve 1 is arranged on the outer side of the shielding layer 2, and it is ensured that the shielding layer 2 is attached to the inner side of the protective sleeve 1, so as to provide the effect of electromagnetic interference shielding for the optical cable.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An enhanced polypropylene optical cable tear cord insulation structure, comprising a protective sleeve (1), wherein an insulating grid (8) is arranged inside the protective sleeve (1), wherein the number of the insulating grids (8) is four, and the four insulating grids (8) are arranged in a ring array inside the protective sleeve (1), characterized in that: Also includes: An inner core sleeve (10) is fixedly mounted on opposite sides of the four insulating grids (8); The inner core sleeve (10) and the insulating grid (8) are made of the same material and are connected by hot-melt connection, and a central reinforcement member (6) passes through the inner side of the inner core sleeve (10); A reserved hole (9) is provided in the insulating grille (8); The reserved hole (9) is parallel to the central reinforcement member (6), and the optical fiber bundle (5) passes through the reserved hole (9); A support sleeve (3) is arranged between adjacent insulating grids (8); The support sleeve (3) is filled with a cable core filling layer (4), and a filling rope (7) is arranged in the cable core filling layer (4).

2. The reinforced polypropylene optical cable tear cord insulation structure according to claim 1, characterized in that: The protective sleeve (1) is designed with a polyethylene material. A shielding layer (2) is provided on the inner side of the protective sleeve (1). The shielding layer (2) is designed with an aluminum foil braid. The shielding layer (2) is attached to the inner side of the protective sleeve (1).

3. The reinforced polypropylene optical cable tear cord insulation structure according to claim 1, characterized in that: The insulating grid (8) is designed with a polypropylene material, and the optical fiber bundle (5) passing through the insulating grid (8) is parallel to the central reinforcement member (6).

4. The reinforced polypropylene optical cable tear cord insulation structure according to claim 1, characterized in that: The length of the inner core sleeve (10) matches the length of the insulating grid (8), and the inner core sleeve (10) is arranged at the center of the protective sleeve (1).

5. The reinforced polypropylene optical cable tear cord insulation structure according to claim 1, characterized in that: The outer wall of the support sleeve (3) is glued and installed with the insulating grille (8) and the inner core sleeve (10), and the length of the support sleeve (3) matches the length of the insulating grille (8).

6. The reinforced polypropylene optical cable tear cord insulation structure according to claim 1, characterized in that: The cable core filling layer (4) is made by mixing water-absorbent powder and a resin matrix.

7. The reinforced polypropylene optical cable tear cord insulation structure according to claim 1, characterized in that: The filling rope (7) is made of nylon material, and the length of the filling rope (7) is greater than the length of the insulating grid (8).

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