Low-smoke halogen-free flame-retardant power cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a low-smoke halogen-free flame-retardant power cable which comprises a lead, an inner coating layer is arranged on the outer side of the lead, an outer coating layer is arranged on the outer side of the inner coating layer, and a protective pad used for resisting external acting force is further arranged on the outer side of the inner coating layer. The protection pad is further used for layering the inner wrapping layer and the outer wrapping layer so as to prevent external acting force and tearing from being directly transmitted inwards, a protruding ring used for enhancing the external force resistance performance is arranged on the outer side of the protection pad, and a positioning belt used for providing space when an external assembly is installed is arranged in the protruding ring. A fixing pad used for installing the positioning belt is further arranged in the protruding ring. According to the utility model, stronger external pulling force can be born, external influence can be isolated, inward influence transmission can be prevented so as to guarantee stable operation of the cable, and the cable can be conveniently connected with an external mechanism, so that cable laying is more flexible and practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, in particular to a low-smoke, halogen-free, flame-retardant power cable. Background Art

[0002] Low smoke halogen-free flame retardant power cable is a special type of cable. It can keep the circuit unobstructed and reduce smoke generation when a fire occurs. It has the characteristics of low smoke, halogen-free and flame retardant. Due to its excellent performance in fire, low smoke halogen-free flame retardant power cable is widely used in public places, high-rise buildings, hospitals, schools, subways and other occasions.

[0003] At present, during the installation and operation of existing power cables, they will inevitably be subjected to mechanical stresses such as stretching and bending, which will cause damage to the cable sheath or breakage of the internal conductor, and may also directly break free from the connection, affecting its long-term stable performance;

[0004] In order to solve the above problems, the present application proposes a low-smoke halogen-free flame-retardant power cable. Utility Model Content

[0005] The utility model aims to provide a low-smoke halogen-free flame-retardant power cable, which solves the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a low-smoke, halogen-free, flame-retardant power cable, comprising a conductor, an inner coating layer is arranged on the outer side of the conductor, an outer coating layer is arranged on the outer side of the inner coating layer, a protective pad for resisting external forces is also arranged on the outer side of the inner coating layer, the protective pad is also used to delaminate the inner coating layer and the outer coating layer to prevent the external forces and tearing from being directly transmitted inwards, a convex ring for enhancing the external force resistance performance is arranged on the outer side of the protective pad, a positioning belt for providing space when installing external components is arranged inside the convex ring, a fixing pad for installing the positioning belt is also arranged inside the convex ring, and a transition belt for transferring external mechanisms is also arranged on the outer side of the fixing pad.

[0008] Furthermore, a limiting groove for installing a fixing pad, a positioning belt and a transition belt is provided inside the convex ring, and the transition belt is directly sleeved on the outer side of the fixing pad after the positioning belt is peeled off.

[0009] Furthermore, protruding clamping plates are provided at both ends of the opening of the adapter belt, and the interior of the adapter belt is a stepped structure to fill the groove to avoid gaps.

[0010] Furthermore, connecting ribs for connecting adjacent fixing pads into one are arranged inside the outer covering layer.

[0011] Furthermore, an adapter ring for connecting to an external mechanism is arranged above the clamping plate, and a positioning hole for passing the adapter ring is opened inside the clamping plate.

[0012] Furthermore, a connecting belt for installing and fixing the positioning belt is provided on the outer side of the fixing pad.

[0013] Furthermore, positioning grooves for passing connecting ribs are provided inside the convex ring and the fixing pad.

[0014] The utility model has the following beneficial effects:

[0015] The utility model can be conveniently assembled through the adapter belt, and an adapter ring can be installed on the outside thereof to withstand external pulling, and can also be connected to an external mechanism through it to prevent the connection from falling off due to pulling. Compared with the existing power cable, it can withstand stronger and more frequent pulling forces, and improve the long-term stable use performance and life of the cable;

[0016] The utility model can fuse the outer coating layer to the inside of the inner coating layer after the outer coating is pre-installed on the outer side of the conductor during extrusion production. Furthermore, when connecting joints or external suspension components, the positioning belt can be directly peeled off and the transition belt can be sleeved on the outside, so that the use of the cable is more flexible and adaptable to various environments to improve the practical performance of the cable.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of the protective pad and the wire of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the protective pad of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the adapter belt of the utility model;

[0023] Figure 5It is a partial enlarged structural schematic diagram of part A of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1. conductor; 2. inner coating layer; 3. outer coating layer; 4. protective pad; 5. convex ring; 6. positioning belt; 7. adapter belt; 8. limiting groove; 9. splint; 10. fixing pad; 11. connecting rib; 12. adapter ring; 13. positioning hole; 14. connecting belt; 15. positioning groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] See also Figure 1-5 As shown, the utility model is a low-smoke halogen-free flame-retardant power cable, comprising a conductor 1, an inner coating layer 2 is arranged on the outer side of the conductor 1, an outer coating layer 3 is arranged on the outer side of the inner coating layer 2, a protective pad 4 for resisting external forces is also arranged on the outer side of the inner coating layer 2, the protective pad 4 is also used to delaminate the inner coating layer 2 and the outer coating layer 3 to prevent the external forces and tearing from being directly transmitted inward, a convex ring 5 is arranged on the outer side of the protective pad 4 for enhancing the external force resistance performance, a positioning belt 6 is arranged inside the convex ring 5 for providing space when installing external components, a fixing pad 10 for installing the positioning belt 6 is also arranged inside the convex ring 5, and a transfer belt 7 for transferring external mechanisms is also arranged on the outer side of the fixing pad 10. In this embodiment, the protective pad 4 is also used to locate the cutting depth, so that the maintenance operation is simple and the work difficulty is reduced.

[0029] Among them, the inside of the convex ring 5 is provided with a limiting groove 8 for installing the fixing pad 10, the positioning belt 6 and the transition belt 7. The transition belt 7 is directly sleeved on the outside of the fixing pad 10 after the positioning belt 6 is peeled off. In this embodiment, the positioning belt 6 protrudes slightly outward to reduce the contact range between the cable and the external mechanism, so as to reduce wear and avoid affecting the performance of the cable.

[0030] Among them, protruding clamping plates 9 are set at both ends of the opening of the adapter belt 7. The interior of the adapter belt 7 is a stepped structure to fill the groove to avoid gaps. In this embodiment, the adapter belt 7 is also used to increase the contact range to avoid damage caused by excessive concentration of pulling force.

[0031] The outer covering layer 3 is provided with connecting ribs 11 for connecting adjacent fixing pads 10 as a whole. In this embodiment, the connecting ribs 11 are used to strengthen the connection stability between the protective pad 4 and the outer covering layer 3 .

[0032] Among them, an adapter ring 12 for connecting to an external mechanism is arranged above the clamp plate 9, and a positioning hole 13 for passing the adapter ring 12 is opened inside the clamp plate 9. The external connection method of the adapter ring 12 in this embodiment is used to increase the applicability of the cable, so that it can be flexibly installed in various environments to improve the use effect.

[0033] A connecting belt 14 for installing and fixing the positioning belt 6 is provided on the outer side of the fixing pad 10 .

[0034] The convex ring 5 and the fixing pad 10 are provided with positioning grooves 15 for passing the connecting ribs 11 .

[0035] It can be understood that the utility model can withstand stronger external pulling force, and at the same time it can isolate external influences and prevent the transmission of inward influences to ensure the stable operation of the cable. Secondly, it can be conveniently connected to external mechanisms, making cable laying more flexible and practical.

[0036] A specific application of the operation process of this embodiment is: first, the rolled-up protective pad 4 is placed outside so that it is mounted on the upper and lower ends of the conductor 1, and is bent to form a coating, and then it is extruded together with the conductor 1 to form an outer coating layer 3. This can make the exterior of the cable structured and improve its adaptability. Further, when the adapter assembly or the connecting joint is used, the positioning belt 6 can be peeled off so that the adapter belt 7 is mounted on the outside of the fixed pad 10. Finally, the adapter ring 12 is added to connect the external mechanism. After this arrangement, the flexibility of the cable installation can be greatly improved, so that it can adapt to various complex environments and improve its practical performance.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A low-smoke, halogen-free, flame-retardant power cable, comprising a conductor (1), Features: The outer side of the conductor (1) is provided with an inner coating layer (2), the outer side of the inner coating layer (2) is provided with an outer coating layer (3), the outer side of the inner coating layer (2) is also provided with a protective pad (4) for resisting external forces, the protective pad (4) is also used to delaminate the inner coating layer (2) and the outer coating layer (3) to prevent external forces and tearing from being directly transmitted inward, the outer side of the protective pad (4) is provided with a convex ring (5) for enhancing external force resistance performance, the inner side of the convex ring (5) is provided with a positioning belt (6) for providing space when installing external components, the inner side of the convex ring (5) is also provided with a fixing pad (10) for installing the positioning belt (6), and the outer side of the fixing pad (10) is also provided with a transition belt (7) for transitioning to an external mechanism.

2. A low-smoke, halogen-free, flame-retardant power cable according to claim 1, Features: The convex ring (5) is provided with a limiting groove (8) for installing a fixing pad (10), a positioning belt (6) and a transition belt (7). The transition belt (7) is directly sleeved on the outside of the fixing pad (10) after the positioning belt (6) is peeled off.

3. A low-smoke, halogen-free, flame-retardant power cable according to claim 1, Features: Protruding clamping plates (9) are provided at both ends of the opening of the transfer belt (7), and the interior of the transfer belt (7) is a stepped structure to fill the groove and avoid the occurrence of gaps.

4. The low-smoke halogen-free flame-retardant power cable according to claim 1, Features: The outer covering layer (3) is provided with connecting ribs (11) for connecting adjacent fixing pads (10) into one.

5. A low-smoke, halogen-free, flame-retardant power cable according to claim 3, Features: An adapter ring (12) for connecting to an external mechanism is arranged above the clamping plate (9), and a positioning hole (13) for passing the adapter ring (12) is opened inside the clamping plate (9).

6. The low-smoke, halogen-free, flame-retardant power cable according to claim 1, Features: A connecting belt (14) for installing and fixing the positioning belt (6) is provided on the outer side of the fixing pad (10).

7. The low-smoke halogen-free flame-retardant power cable according to claim 1, Features: The convex ring (5) and the fixing pad (10) are provided with positioning grooves (15) for passing the connecting ribs (11).

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