Mining ratproof nonmetal armored composite cable

Abstract

The utility model relates to a mining rat-proof nonmetal armored composite cable, which comprises a central reinforcing core, a conductor layer, an optical fiber unit, a composite waterproof layer and an outer protection structure, and is characterized in that the conductor layer comprises at least two aluminum alloy conductor layers which are coaxially and sequentially coated outside the central reinforcing core; each conductor layer is formed by arranging a plurality of single wires with trapezoidal cross sections in a spiral twisting mode, trapezoidal inclined planes of the single wires of the same conductor layer abut against each other to form a self-locking structure, each conductor layer is formed by arranging the single wires with trapezoidal cross sections in a spiral twisting mode, and the twisting directions of the adjacent layers are opposite. The trapezoidal inclined surfaces of the single wires of the adjacent layers abut against each other to form a self-locking structure, so that on one hand, the integrality and the stability of the conductor layer are improved, the conductors can cooperatively deform when being stressed, and the possibility of deformation of the single wires due to uneven stress is reduced; and on the other hand, the self-locking structure can effectively prevent relative sliding between the single wires under the action of external factors, and the long-term stability of the conductor layer structure is ensured.

Description

Technical Field

[0001] This utility model relates to the field of optical cables, and in particular to a non-metallic armored composite cable for mining applications that is rodent-proof. Background Technology

[0002] In the mining environment, various cables undertake critical tasks such as power transmission, signal transmission, and hydraulic power supply, playing an indispensable role in ensuring the efficient and safe operation of mine production. However, traditional mining cables have gradually revealed many problems that urgently need to be solved when faced with complex and harsh mining conditions.

[0003] However, existing composite cables have some shortcomings in practical applications. Traditional composite cable structures do not perform well in terms of compressive strength. When composite cables are subjected to external pressure, the internal optical fibers are easily damaged, leading to a decrease in optical signal transmission quality and even communication interruption. Under harsh mining conditions, optical cables may be subjected to significant pressure, and traditional structures are unable to effectively resist these external forces. Moreover, the internal structural stability of some composite optical cables is poor, and relative slippage and deformation can easily occur between individual lines, resulting in uneven stress distribution. This not only affects the mechanical properties of the optical cable but also has an adverse impact on the long-term reliability of the optical fiber. In addition, there are a certain number of rodents in the mining environment, and the protective structure of traditional mining cables is difficult to resist rodent gnawing. Once the cable is bitten by rodents, it can damage the internal conductors, optical fibers, or hydraulic pipes. Furthermore, mining operations face many risks. Once a mining accident occurs, the survival of trapped personnel underground is extremely precarious. Traditional mining facilities lack an effective channel to promptly transport the necessary life-sustaining supplies to trapped personnel after a mining accident. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a non-metallic armored composite cable for mining applications that is rodent-proof.

[0005] The technical solution of the non-metallic armored composite cable for rodent protection in mining provided by this utility model is as follows:

[0006] A non-metallic armored composite cable for rodent protection in mining includes a central reinforcing core, a conductor layer, an optical fiber unit, a composite water-blocking layer, and an outer protective structure. The conductor layer comprises at least two coaxial aluminum alloy conductor layers sequentially covering the central reinforcing core. Each conductor layer consists of several single wires with trapezoidal cross-sections arranged in a spiral twisted manner, and the trapezoidal inclined surfaces of the single wires in the same conductor layer abut against each other to form a self-locking structure. The optical fiber unit is embedded in the trapezoidal structure gap between the two conductor layers. The outer conductor layer is covered by the composite water-blocking layer, and the outer protective structure is also provided outside the composite water-blocking layer.

[0007] Optionally, the central reinforcing core is specifically a hollow stainless steel unit.

[0008] Optionally, the outer surface of the optical fiber unit is tightly covered with an elastic buffer layer, and a silicone layer is filled between the outer conductor layer and the inner conductor layer.

[0009] Optionally, the composite water-blocking layer consists of an inner layer of expanding water-blocking tape and an outer layer of water-blocking yarn. The water-blocking tape is wrapped around the surface of the outer conductor layer in an overlapping manner, and the water-blocking yarn is woven at a 45° angle to cover the outside of the water-blocking tape.

[0010] Optionally, the outer surface of the elastic buffer layer is provided with a number of evenly distributed protrusions, the height of which is 5%-10% of the thickness of the buffer layer, and the shape of which is hemispherical.

[0011] Optionally, the outer protective structure is specifically a polyethylene sheath layer with a thickness of 1-2 mm, and the polyethylene sheath layer contains UV stabilizers and antioxidants.

[0012] In summary, this utility model has at least one of the following beneficial technical effects:

[0013] 1. Each conductor layer consists of single wires with trapezoidal cross-sections arranged in a spiral twisting manner, with adjacent layers twisted in opposite directions. The trapezoidal slopes of the single wires in adjacent layers abut against each other to form a self-locking structure. This structure improves the integrity and stability of the conductor layer, enabling the conductors to deform collaboratively under stress, reducing the possibility of deformation of single wires due to uneven stress, and enhancing the resistance to compression. On the other hand, the self-locking structure effectively prevents relative slippage between single wires under the influence of external factors, ensuring the long-term stability of the conductor layer structure.

[0014] 2. The elastic buffer layer can absorb and disperse these impact forces, preventing the optical fiber unit from being damaged by excessive external force. The silicone layer can buffer vibration, reduce the impact of vibration on the conductor layer and optical fiber unit, and the silicone layer helps to make the electric field distribution between conductor layers more uniform.

[0015] 3. The hemispherical protrusions can come into contact with external objects before the planar portion of the buffer layer. These protrusions can disperse concentrated stress over a larger area, avoiding stress concentration from damaging the fiber unit.

[0016] 4. Water-blocking yarn is woven at 45° on the outside of the water-blocking tape. The inner layer of expanded water-blocking tape is tightly wrapped around the surface of the conductor layer, providing a basic support structure for the entire composite water-blocking layer. The outer layer of water-blocking yarn is woven at 45° on the water-blocking tape, which not only enhances the water-blocking performance but also reinforces the water-blocking tape. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a non-metallic armored composite cable for rodent protection in mining.

[0018] Figure 2 This is a front view of a non-metallic armored composite cable for rodent protection in mining.

[0019] Figure 3 This is a cross-sectional view of a non-metallic armored composite cable for rodent protection in mining.

[0020] Explanation of reference numerals in the attached diagram: 1. Central reinforcing core; 2. Conductor layer; 3. Optical fiber unit; 4. Composite water-blocking layer; 41. Water-blocking tape; 42. Water-blocking yarn; 5. Outer protective structure; 6. Elastic buffer layer; 61. Protrusion; 7. Silicone layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] This utility model discloses a non-metallic armored composite cable for rodent protection in mining. (Refer to...) Figure 1-3 A non-metallic armored composite cable for mining rodent protection includes a central reinforcing core 1, a conductor layer 2, an optical fiber unit 3, a composite water-blocking layer 4, and an outer protective structure 5. The central reinforcing core 1 is specifically a hollow stainless steel unit. The advantage of this design is that after a mining accident, conventional rescue methods may be hindered. The hollow stainless steel unit can utilize the existing cable laying path to quickly establish a transport channel, provide nutrient solution to trapped personnel as soon as possible, greatly shorten the arrival time of rescue materials, and give trapped personnel more chances of survival.

[0025] The conductor layer 2 comprises at least two coaxial aluminum alloy conductor layers 2 sequentially wrapped around the central reinforcing core 1. Each conductor layer 2 consists of several single wires with trapezoidal cross-sections arranged in a spiral twisted manner, and the trapezoidal slopes of the single wires in the same conductor layer 2 abut against each other to form a self-locking structure. The optical fiber unit 3 is embedded in the trapezoidal structure mating gap between the two conductor layers 2. Through this design, each conductor layer consists of single wires with trapezoidal cross-sections arranged in a spiral twisted manner, and the twisting directions of adjacent layers are opposite. The trapezoidal slopes of the single wires in adjacent layers abut against each other to form a self-locking structure. This structure improves the integrity and stability of the conductor layer 2. Qualitative design enables conductors to deform collaboratively under stress, reducing the possibility of deformation of individual wires due to uneven stress and enhancing compression resistance. On the other hand, the self-locking structure effectively prevents relative slippage between individual wires under external factors, ensuring the long-term stability of the conductor layer 2 structure. The fiber unit 3 is embedded in the trapezoidal structure gap between two adjacent conductor layers 2. This layout makes full use of the space between conductor layers 2, making the optical cable structure more compact. At the same time, the conductor layer 2 can provide a certain physical protection for the fiber unit 3, reducing the direct impact of external factors on the fiber unit 3.

[0026] The outer surface of the fiber unit 3 is tightly covered with an elastic buffer layer 6, and a silicone layer 7 is filled between the outer conductor layer 2 and the inner conductor layer 2. The elastic buffer layer 6 can absorb and disperse these impact forces, preventing the fiber unit 3 from being damaged by excessive external forces. The silicone layer 7 can buffer vibrations, reduce the impact of vibrations on the conductor layer 2 and the fiber unit 3, and the silicone layer 7 helps to make the electric field distribution between the conductor layers 2 more uniform.

[0027] The outer surface of the elastic silicone buffer layer is provided with several uniformly distributed protrusions 61. The height of the protrusions 61 is 5%-10% of the thickness of the buffer layer. The protrusions 61 are hemispherical in shape. The hemispherical protrusions 61 can contact the external object before the planar part of the buffer layer. These protrusions 61 can disperse the concentrated stress to a larger area and avoid stress concentration from damaging the optical fiber unit 3.

[0028] The outer conductor layer 2 is covered with a composite water-blocking layer 4. The composite water-blocking layer 4 consists of an inner expansion water-blocking tape 41 and an outer water-blocking yarn 42. The water-blocking tape 41 is wrapped around the surface of the outer conductor layer 2 in an overlapping manner. The water-blocking yarn 42 is covered on the outside of the water-blocking tape 41 in a 45° cross-weaving manner. The inner expansion water-blocking tape 41 is tightly wrapped around the surface of the conductor layer 2, providing a basic support structure for the entire composite water-blocking layer 4. The outer water-blocking yarn 42 is covered on the water-blocking tape 41 in a 45° cross-weaving manner, which not only enhances the water-blocking performance but also reinforces the water-blocking tape 41. The composite water-blocking layer 4 is also provided with an outer protective structure 5, which is a polyethylene sheath layer with a thickness of 1-2 mm. The polyethylene sheath layer contains UV stabilizers and antioxidants.

[0029] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A non-metallic armored composite cable for rodent protection in mining, characterized in that: The device includes a central reinforcing core (1), a conductor layer (2), an optical fiber unit (3), a composite water-blocking layer (4), and an outer protective structure (5). The conductor layer (2) comprises at least two coaxial aluminum alloy conductor layers (2) sequentially covering the central reinforcing core (1). Each conductor layer (2) consists of several single wires with trapezoidal cross-sections arranged in a spiral twisted manner, and the trapezoidal inclined surfaces of the single wires of the same conductor layer (2) abut against each other to form a self-locking structure. The optical fiber unit (3) is embedded in the trapezoidal structure fitting gap between the two conductor layers (2). The outer conductor layer (2) is covered by the composite water-blocking layer (4), and the outer protective structure (5) is also provided on the outside of the composite water-blocking layer (4).

2. The non-metallic armored composite cable for rodent protection in mining according to claim 1, characterized in that: The central reinforcing core (1) is specifically a hollow stainless steel unit.

3. The non-metallic armored composite cable for rodent protection in mining according to claim 1, characterized in that: The outer surface of the optical fiber unit (3) is tightly covered with an elastic buffer layer (6), and a silicone layer (7) is filled between the outer conductor layer (2) and the inner conductor layer (2).

4. The non-metallic armored composite cable for rodent protection in mining according to claim 1, characterized in that: The composite water-blocking layer (4) consists of an inner expansion water-blocking tape (41) and an outer water-blocking yarn (42). The water-blocking tape (41) is wrapped around the surface of the outer conductor layer (2) in an overlapping wrapping manner, and the water-blocking yarn (42) is covered on the outside of the water-blocking tape (41) in a 45° cross-weaving manner.

5. A non-metallic armored composite cable for rodent protection in mining according to claim 3, characterized in that: The outer surface of the elastic buffer layer (6) is provided with a number of uniformly distributed protrusions (61), the height of the protrusions (61) is 5%-10% of the thickness of the buffer layer, and the shape of the protrusions (61) is hemispherical.

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