Mining flame-retardant cable with multi-layer protection armoring

Abstract

The utility model relates to the technical field of mining cables, in particular to a multi-layer protective armored mining flame-retardant cable, which comprises an inner-layer cable, a protective layer is wrapped outside the inner-layer cable, an armored layer is arranged outside the protective layer, an outer rubber layer is arranged outside the armored layer, and the armored layer comprises an armored steel wire and an outer hemp rope. The armored layer is arranged on the outer side of the cable, the tensile strength and compressive strength of the cable are greatly enhanced, the service life of the cable is prolonged, the armored layer is formed by staggered installation of the armored steel wires and the hemp ropes, the armored steel wires can extrude the hemp ropes when the armored steel wires are extruded by external force, and the compressive strength of the armored layer is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of mine cables, in particular to a mine flame-retardant cable with multi-layer protection armor. Background Technique

[0002] The working environment of mine cables is relatively complex, the working conditions are relatively harsh, and the friction between the cables and the ground is relatively serious when the construction workers pull them, resulting in a high degree of wear. Especially considering the fire prevention and flame retardancy factors, mine cables are required to have sufficient flame retardancy during manufacturing to ensure the safety of the cables themselves, prevent the cables from burning rapidly in case of a fire, and cause other electrical equipment to malfunction, bringing inconvenience to construction, rescue and other work.

[0003] The utility model patent with the authorization announcement number of CN221057187U discloses a mine flame-retardant cable. The utility model includes a cable core unit, an aluminum sheath is arranged outside the cable core unit, a water absorption layer is arranged outside the aluminum sheath, a spacer is arranged outside the water absorption layer, an oxygen isolation layer is arranged outside the spacer, a low-smoke and halogen-free sheath is arranged outside the oxygen isolation layer, and abrasion-proof ribs are arranged on the outer surface of the low-smoke and halogen-free sheath. For the mine flame-retardant cable of the utility model, the spacer ensures that water has enough time to cool the cable, and the water absorption layer can timely absorb the penetrated water, avoiding short circuit and ensuring the working performance of the cable.

[0004] Although the above utility model can prevent the flame retardancy of burning cables, when the cables are located inside the mine, the extrusion of the cables by gravel and the corrosion of the cables by certain ores will cause irreversible damage to the cables. In view of this, we propose a mine flame-retardant cable with multi-layer protection armor. Content of the Utility Model

[0005] The utility model provides a mine flame-retardant cable with multi-layer protection armor to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] The mine flame-retardant cable with multi-layer protection armor includes an inner cable, a protective layer is wrapped outside the inner cable, an armor layer is arranged outside the protective layer, and an outer rubber layer is arranged outside the armor layer;

[0008] The armor layer includes armor steel wires and outer hemp ropes.

[0009] As a preferred technical solution, the inner cable includes an inner rubber layer, a plurality of cable bodies installed inside the inner rubber layer, and inner hemp ropes filled between the cable bodies.

[0010] As a preferred technical solution, the protective layer includes an isolation layer, a heat insulation layer disposed outside the isolation layer, and a flame retardant layer disposed outside the heat insulation layer.

[0011] As a preferred technical solution, the armor layer has two layers, and each layer is composed of the armor steel wires and the outer hemp ropes placed alternately.

[0012] As a preferred technical solution, the armor steel wires in the upper layer of the armor layer correspond to the positions of the outer hemp ropes in the lower layer, and outer hemp ropes are arranged on the left and right sides and the upper side of the armor steel wires.

[0013] As a preferred technical solution, the flame retardant layer is composed of aluminum hydroxide or magnesium hydroxide, and the isolation layer is an aluminum sheath.

[0014] As a preferred technical solution, the thickness of the outer rubber layer is three to four times the thickness of the inner layer cable, and the outer rubber layer is made of butyl rubber.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. By arranging the armor layer outside the cable, the tensile strength and compressive strength of the cable are greatly enhanced, so as to extend the service life of the cable.

[0017] 2. The armor layer is arranged with the armor steel wires and the hemp ropes installed alternately. When being extruded by an external force, the armor steel wires can extrude the hemp ropes, further enhancing the compressive strength of the armor layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the inner layer cable of the present utility model;

[0020] Figure 3 is a schematic diagram of the structure of the protective layer of the present utility model;

[0021] Figure 4 is a schematic diagram of the structure of the armor layer of the present utility model.

[0022] The meanings of the various reference numerals in the figure are as follows:

[0023] 1. Inner layer cable; 11. Inner rubber layer; 12. Cable body; 13. Inner hemp rope; 2. Protective layer; 21. Isolation layer; 22. Heat insulation layer; 23. Flame retardant layer; 3. Armor layer; 31. Armor steel wire; 32. Outer hemp rope; 4. Outer rubber layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] 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.

[0025] Please refer to Figures 1 - 4 , this embodiment provides a technical solution:

[0026] A flame-retardant cable for mining with multi-layer protective armor includes an inner cable 1, a protective layer 2 is wrapped outside the inner cable 1, an armor layer 3 is provided outside the protective layer 2, and an outer rubber layer 4 is provided outside the armor layer 3. The armor layer 3 includes armor steel wires 31 and outer hemp ropes 32. Through the above mechanism, the overall tensile strength and compressive strength of the cable can be enhanced.

[0027] Furthermore, the inner cable 1 includes an inner rubber layer 11, a plurality of cable bodies 12 installed inside the inner rubber layer 11, and an inner hemp rope 13 filled between the cable bodies 12. The inner part is filled by the inner hemp rope 13.

[0028] Furthermore, the protective layer 2 includes an insulating layer 21, a heat-insulating layer 22 provided outside the insulating layer 21, and a flame-retardant layer 23 provided outside the heat-insulating layer 22. The spread of combustion is prevented by the flame-retardant layer 23.

[0029] In this embodiment, the armor layer 3 has two layers, and each layer is composed of the armor steel wires 31 and the outer hemp ropes 32 placed alternately, reserving a moving space for the armor steel wires 31.

[0030] In this embodiment, the armor steel wires 31 in the upper layer of the armor layer 3 correspond to the positions of the outer hemp ropes 32 in the lower layer. The outer hemp ropes 32 are provided on the left and right sides and the upper side of the armor steel wires 31, and the armor steel wires 31 are wrapped by the outer hemp ropes 32.

[0031] In this embodiment, the flame-retardant layer 23 is composed of aluminum hydroxide or magnesium hydroxide, and the insulating layer 21 is an aluminum sheath, and the insulating layer 21 provides electromagnetic shielding for the cable.

[0032] In this embodiment, the thickness of the outer rubber layer 4 is three to four times that of the inner cable 1. The outer rubber layer 4 is made of butyl rubber, and the outer rubber layer 4 is stronger.

[0033] It should be noted that the structures and working principles of the cable bodies 12 and the hemp ropes involved in this embodiment are well known to those skilled in the art, and will not be elaborated here. The structures and working principles of the flame-retardant layer 23 involved in this embodiment are already disclosed technologies in the prior art, and will not be elaborated here.

[0034] In the specific use process of the multi-layer protective armored mine flame-retardant cable of this embodiment, when an external force continuously presses the whole cable, due to the design of the two layers of the armored layer 3, the armored steel wires 31 in the upper layer will squeeze the outer hemp ropes 32 in the lower layer, and the armored steel wires 31 in the upper layer will move downward to a certain extent, which will cause the whole cable to become flattened, so that the cable can be away from the point of the external continuous pressure, reducing part of the impact from the external force. And because the cable has deformed, it may cause the external force to slide away and unable to continue to apply to the whole cable component;

[0035] The armored steel wires 31 inside the armored layer 3 can directly increase the tensile strength of the whole cable.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer protective armored flame-retardant mining cable, comprising an inner layer cable (1), characterized in that: The inner cable (1) is wrapped with a protective layer (2) on the outside, an armor layer (3) is arranged on the outside of the protective layer (2), and an outer rubber layer (4) is arranged on the outside of the armor layer (3); The armor layer (3) comprises armor steel wires (31) and outer hemp ropes (32).

2. The multi-layer protective armored flame-retardant cable for mining as claimed in claim 1, characterized in that: The inner layer cable (1) comprises an inner rubber layer (11), a plurality of cable bodies (12) installed inside the inner rubber layer (11), and inner hemp ropes (13) filled between the cable bodies (12).

3. The multi-layer protective armored flame-retardant cable for mining as claimed in claim 2, characterized in that: The protective layer (2) comprises an insulating layer (21), a heat insulating layer (22) arranged outside the insulating layer (21), and a flame retardant layer (23) arranged outside the heat insulating layer (22).

4. The multi-layer protective armored flame-retardant cable for mining as claimed in claim 1, characterized in that: The armor layer (3) has two layers in total, and each layer is composed of the armor steel wires (31) and the outer hemp ropes (32) arranged alternately.

5. The multi-layer protective armored flame-retardant cable for mining as claimed in claim 1, characterized in that: The armored steel wire (31) on the upper layer of the armored layer (3) corresponds to the outer hemp rope (32) on the lower layer in position, and the outer hemp rope (32) is provided on both the left and right sides and the upper side of the armored steel wire (31).

6. The multi-layer protective armored flame-retardant cable for mining as claimed in claim 3, characterized in that: The flame retardant layer (23) is composed of aluminum hydroxide or magnesium hydroxide, and the insulating layer (21) is an aluminum sheath.

7. The multi-layer protective armored flame-retardant cable for mining as claimed in claim 3, characterized in that: The thickness of the outer rubber layer (4) is three to four times the thickness of the inner layer cable (1), and the outer rubber layer (4) is made of butyl rubber.

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