Mining dragging cable

Abstract

The utility model relates to a mining drag cable, relates to cable technical field, including a plurality of optical fiber, a plurality of protection layer, shock-resistant subassembly and protection subassembly, the protection layer is wrapped on the outer surface of the optical fiber, the shock-resistant subassembly includes a plurality of hexagonal insulating layer and filler, the hexagonal insulating layer is wrapped on the outer surface of the protection layer, and the filler is filled in the hexagonal insulating layer. The plurality of hexagonal insulating layers are arranged and combined to form a honeycomb structure, the filler is arranged in gaps among the plurality of hexagonal insulating layers, and the protection assembly comprises a compression-resistant layer, an anti-corrosion layer, a sealing layer and a wear-resistant layer which are arranged on the outer side of the filler. According to the utility model, through the arrangement of the anti-seismic assembly and the protection assembly, the anti-seismic performance and the pressure resistance of the mining cable are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a mining drag cable. Background Technique

[0002] A cable is usually a cable similar to a rope formed by stranding several or several groups of wires, with at least two wires in each group; among them, a drag cable is a high-flexibility special cable applied to mining that can move back and forth with a drag chain without being easily worn, and is usually also called a drag chain cable or a tank chain cable; as an important part of the high-end equipment manufacturing industry, the drag chain cable has the characteristics of high technical content, strict use conditions, and high added value.

[0003] At present, the Chinese utility model patent application with the publication date of March 26, 2024 and the publication number of CN220672233U proposed a drag chain cable. The existing cable has poor tensile resistance. The drag chain cable includes a core, and the core includes a conductor, a conductor braid layer, and an insulating layer. Multiple cores are cabled and filled in the gaps. A flame-retardant tape, a shielding layer, an oxygen isolation layer, a sheath, and a wear-resistant layer are arranged outside the cabled cores. The conductor is a stranded structure including light aluminum alloy soft wires and fiber braided wires, which enhances the tensile resistance and swing resistance of the cable, solves the problem of frequent core breakage in the use of the cable, and has good development prospects.

[0004] The working environment of the cable is harsh. The cable is easily impacted during use. The cable needs earthquake resistance. During the expected working period, it moves forward, translates, or retracts. Therefore, the cable also needs compressive resistance. Common rubber-sheathed cables cannot meet such a harsh use environment, causing economic losses to the ore mining industry. Content of the Utility Model

[0005] In order to improve the earthquake resistance and compressive resistance of the existing mining cable, the utility model provides a mining drag cable.

[0006] The utility model provides a mining drag cable, which includes a plurality of optical fibers, a plurality of protective layers, an earthquake resistance component, and a protection component. The protective layer is wrapped on the outer surface of the optical fiber. The earthquake resistance component includes a plurality of hexagonal insulating layers and a filling. The hexagonal insulating layers are wrapped on the outer surface of the protective layer. The plurality of hexagonal insulating layers are arranged and combined into a honeycomb structure. The filling is arranged in the gaps between the plurality of hexagonal insulating layers. The protection component includes a compressive layer, an anti-corrosion layer, a sealing layer, and a wear-resistant layer arranged outside the filling.

[0007] By adopting the above technical solution, when the cable is impacted during use, due to the arrangement of multiple side walls and a series of continuous honeycomb-shaped network structures of the hexagonal insulating layer, external forces from all directions can be dispersed and borne. As a result, the resistance of the honeycomb structure to extrusion pressure is much higher than that of any circular or square shape; the compressive resistance of the existing mining cable is improved. The hexagonal structural shape enables more uniform force distribution, which helps to disperse pressure and reduce crack propagation; the seismic resistance of the existing mining cable is improved; therefore, the setting of the hexagonal insulating layer and the filling enhances the anti-cracking performance of the hexagonal insulating layer, effectively improving the seismic resistance and compressive resistance of the existing mining cable and extending the service life of the cable.

[0008] Optionally, a plurality of support plates are arranged inside the filling, and the support plates are arranged at the concave parts outside the honeycomb structure.

[0009] By adopting the above technical solution, when the cable is impacted during use, the compressive and seismic resistance of the concave parts outside the honeycomb structure is relatively small. The support plates are arranged at the concave parts outside the honeycomb structure to improve the compressive and seismic resistance of the concave parts outside the honeycomb structure.

[0010] Optionally, the protective layer is longitudinally wrapped with a rubber pad, and the insulating layer is wrapped with a PVC material.

[0011] By adopting the above technical solution, the rubber pad has good wear resistance, high elasticity, tensile strength and elongation rate, and is used to protect the optical fiber; PVC is a common insulating material with good insulation performance, corrosion resistance to chemical substances, and relatively soft, which is suitable for the movement performance requirements of drag chain cables.

[0012] Optionally, the filling is a mineral fireproof layer, and the compressive layer is sleeved on the outer wall of the filling and is wrapped with a mixed nitrile polyvinyl chloride material.

[0013] By adopting the above technical solution, the cable can effectively prevent fire. The surface of the mixed nitrile polyvinyl chloride forms a skin, which effectively isolates it from the outside air completely. Therefore, water vapor cannot penetrate through, and there is no need to add a vapor barrier layer anymore. The outer wall will not condense, and the water absorption rate is low; it has excellent stretching and bending elasticity, can withstand tearing and rough force transmission, and will not be damaged under severe conditions.

[0014] Optionally, the anti-corrosion layer is sleeved with a polyethylene pipe, and the sealing layer is wound with a plastic film.

[0015] By adopting the above technical solution, the chemical properties of the graphene material are stable and it is not easy to react with other substances, which can effectively prevent corrosion, enabling the cable of the present utility model to be applied to humid environments. The plastic film has good resistance to most chemical substances and is not easily eroded by chemical substances. The plastic film can be sealed with other materials by methods such as heat sealing or pressure sealing, and has certain tear resistance and puncture resistance, capable of providing good packaging protection. Therefore, the setting of the sealing layer and the anti-corrosion layer increases the sealing performance and anti-corrosion performance of the cable.

[0016] Optionally, the wear-resistant layer is sleeved with a polyurethane material.

[0017] By adopting the above technical solution, it has excellent wear resistance, oil resistance and chemical corrosion resistance; it can effectively protect the internal structure of the cable and adapt to the movement of the drag chain.

[0018] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0019] 1. The arrangement of the hexagonal insulating layers into a honeycomb structure enables the cable, when being impacted during use, due to the arrangement of multiple walls and a series of continuous honeycomb-shaped network structures of the hexagonal insulating layers, to disperse and bear the external forces from all directions. As a result, the honeycomb structure has much higher resistance to extrusion pressure than any circular or square shape; it improves the compressive resistance of the existing mining cables. The hexagonal structural shape makes the force distribution more uniform, helps to disperse pressure and reduce crack propagation, and improves the seismic resistance of the existing mining cables.

[0020] 2. The cable structure is convenient to process, has low cost, saves resources, is resistant to flexure, tensile and wear, is easy to install, flame-retardant, environmentally friendly, has a high safety factor and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure;

[0022] Figure 2 is Figure 1 a sectional view along the A-A direction in

[0023] Figure 3 is a schematic diagram of the honeycomb structure.

[0024] Explanation of reference numerals: 10, optical fiber; 11, protective layer; 20, seismic component; 21, hexagonal insulating layer; 22, filling; 23, support plate; 30, protective component; 31, compressive layer; 32, anti-corrosion layer; 33, sealing layer; 34, wear-resistant layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following Figure 1 is a further detailed description of the present utility model.

[0026] This embodiment discloses a mining drag cable: Refer to Figures 1-3 , a mining drag cable includes a plurality of optical fibers 10, a plurality of protective layers 11, a seismic resistance component 20 and a protection component 30. The protective layer 11 is wrapped on the outer surface of the optical fiber 10. The protection component 30 includes a compressive layer 31, an anti-corrosion layer 32, a sealing layer 33 and a wear-resistant layer 34. The anti-corrosion layer 32 is wrapped on the outside of the compressive layer 31, the sealing layer 33 is wrapped on the outside of the anti-corrosion layer 32, and the wear-resistant layer 34 is wrapped on the outside of the sealing layer 33.

[0027] When dragging and laying the cable, the staff needs to drag the cable. There are a large number of ores on the mining ground, causing the ground to be uneven. The cable will rub against the ground during the dragging process, causing damage. The wear-resistant layer is arranged on the outside of the cable to increase the wear-resistant performance of the cable. The cable is vulnerable to impact during use, and the seismic resistance component 20 is used to increase the seismic resistance of the cable.

[0028] Refer to Figures 2-3 , the seismic resistance component 20 includes a plurality of hexagonal insulating layers 21 and a filling 22. The hexagonal insulating layers 21 are wrapped on the outer surface of the protective layer 11. A plurality of the hexagonal insulating layers 21 are arranged and combined into a honeycomb structure. The filling 22 is arranged at the gaps between the plurality of hexagonal insulating layers 21.

[0029] The honeycomb structure is the basic structure of a honeycomb, which is composed of a series of regular hexagonal single cells with their openings all facing downwards or towards one side and arranged symmetrically back to back. When the cable is impacted during use, due to the arrangement of multiple walls and a series of continuous honeycomb-shaped network structures of the hexagonal insulating layer 21, it can disperse and bear external forces from all directions, making the honeycomb structure's resistance to extrusion much higher than that of any circle or square. It improves the compressive resistance of the existing mining cable. The hexagonal structure shape makes the force distribution more uniform, helping to disperse pressure and reduce crack propagation. It improves the seismic resistance of the existing mining cable. The regular hexagonal structure has the highest tightness, requires the simplest materials, and has the largest available space. And it has a certain heat preservation performance. Therefore, the setting of the hexagonal insulating layer 21 and the filling 22 enhances the anti-cracking performance of the hexagonal insulating layer 21, effectively improves the seismic resistance and compressive resistance of the existing mining cable, and extends the service life of the cable.

[0030] Refer to Figures 1-2 , a plurality of support plates 23 are arranged in the filling 22. The support plates 23 are arranged at the concave parts on the outside of the honeycomb structure.

[0031] When the cable is impacted during use, the compressive and seismic resistance capabilities of the concave parts on the outside of the honeycomb structure are relatively small. The support plates 23 are arranged at the concave parts on the outside of the honeycomb structure to improve the compressive and seismic resistance capabilities of the concave parts on the outside of the honeycomb structure.

[0032] Refer to Figures 1-2 , the protective layer 11 is longitudinally wrapped with a rubber pad, and the insulating layer is wrapped with PVC material.

[0033] The rubber pad has good wear resistance, high elasticity, tensile strength and elongation rate, and is used to protect the optical fiber 10; PVC is a common insulating material with good insulation performance, corrosion resistance to chemical substances, and relatively soft, which meets the movement performance requirements of the drag chain cable.

[0034] Refer to Figures 1-2 , the filling 22 is a mineral fireproof layer made of magnesium oxide material, and the compressive layer 31 is sleeved on the outer wall of the filling 22 and wrapped with a mixed nitrile polyvinyl chloride material.

[0035] Magnesium oxide is a basic oxide with the general properties of basic oxides. It belongs to a gelling material and is easy to process as the filling 22. The melting point temperature of magnesium oxide is much higher than that of copper. Therefore, the maximum normal operating temperature of the cable can reach 250°C. It can continue to operate at a temperature close to the melting point temperature of copper, 1083°C, in the short term, enabling the cable to effectively prevent fire; the surface of the mixed nitrile polyvinyl chloride forms a skin, effectively isolating it from the outside air completely, so water vapor cannot penetrate, and there is no need to add a moisture barrier layer again. The outer wall will not condense, and the water absorption rate is low; it has excellent stretching and bending elasticity, can withstand tearing and rough force transmission, and will not be damaged under severe conditions.

[0036] Refer to Figures 1-2 , the anticorrosion layer 32 is wrapped on the outer surface of the compressive layer 31, the anticorrosion layer 32 is sleeved with a polyethylene pipe, the sealing layer 33 is wrapped on the outer surface of the anticorrosion layer 32, and the sealing layer 33 is wound with a plastic film.

[0037] The cable needs to go through multiple links such as handling and installation from the factory to actual use. In order to reduce the damage caused by these external factors to the cable, the chemical properties of graphene materials are stable and not easy to react with other substances, which can effectively prevent corrosion, enabling the cable of the present invention to be applied in a humid environment. The plastic film has good resistance to most chemical substances and is not easily eroded by chemical substances; the plastic film can be sealed with other materials by methods such as heat sealing or pressure sealing, and has certain tear resistance and puncture resistance, which can provide better packaging protection; therefore, the setting of the sealing layer 33 and the anticorrosion layer 32 increases the sealing and anticorrosion properties of the cable.

[0038] Refer to Figures 1-2 , the wear-resistant layer 34 is wrapped on the outer surface of the sealing layer 33, and the wear-resistant layer 34 is sleeved with a polyurethane material.

[0039] By adopting the above technical solution, the polyurethane material has good chemical resistance and can resist the erosion of chemical substances such as acids, alkalis, and solvents; the polyurethane material has anti-deformation and wear resistance, is not easy to crack, has a stable finish, and has good anti-deformation ability and wear resistance; therefore, the wear-resistant layer 34 can effectively protect the internal structure of the cable and adapt to the movement of the drag chain.

[0040] The implementation principle of a mining drag cable in this embodiment is as follows:

[0041] When dragging and laying the cable, the staff needs to drag the cable; there are a large number of ores on the mining ground, causing the ground to be uneven. The cable will rub against the ground during the dragging process, causing damage. The wear-resistant layer is arranged on the outer side of the cable to increase the wear-resistant performance of the cable; when the cable is impacted during use, due to the arrangement of multiple walls and a series of continuous honeycomb-shaped mesh structures of the hexagonal insulating layer 21, it can disperse and bear external forces from all directions, making the honeycomb structure's resistance to extrusion much higher than that of any circle or square; improving the compressive resistance of the existing mining cable. The hexagonal structural shape makes the force distribution more uniform, helping to disperse pressure and reduce crack propagation; improving the seismic resistance of the existing mining cable; the mining environment is relatively harsh and humid. The sealing layer 33 made of plastic film can be sealed with other materials by methods such as heat sealing or pressure sealing, and has certain tear resistance and puncture resistance, capable of providing good packaging protection; used for waterproofing; the chemical properties of the graphene material in the anti-corrosion layer 32 are stable, not easy to react with other substances, and can effectively prevent corrosion. The mixed nitrile polyvinyl chloride material in the compressive layer 31 effectively isolates it from the outside air completely, so water vapor cannot penetrate, and there is no need to add a vapor barrier layer again. The outer wall will not condense, and the water absorption rate is low; it has extremely strong elastic qualities for stretching and bending, can withstand tearing and rough force transmission, and will not be damaged under severe conditions, further enhancing the compressive resistance of the cable. The filling 22 is made of magnesium oxide material to form a mineral fireproof layer. The melting point temperature of magnesium oxide is much higher than the melting point temperature of copper. Therefore, the maximum normal operating temperature of the cable can reach 250°C. It can continue to operate at a temperature close to the melting point temperature of copper, 1083°C, in the short term; the PVC material in the insulating layer has good insulation performance, is resistant to the corrosion of chemical substances, and is relatively soft, suitable for the movement performance requirements of the drag chain cable; the rubber pad material in the protective layer 11 has good wear resistance, high elasticity, breaking strength, and elongation rate, and is used to protect the optical fiber 10.

[0042] The above are all the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A mining drag cable, comprising a plurality of optical fibers (10), a plurality of protective layers (11), a seismic-resistant component (20) and a protective component (30), characterized in that: The protective layer (11) is wrapped and arranged on the outer surface of the optical fiber (10); the anti-vibration component (20) comprises a plurality of hexagonal insulating layers (21) and a filler (22); the hexagonal insulating layer (21) is wrapped and arranged on the outer surface of the protective layer (11); the plurality of hexagonal insulating layers (21) are arranged and combined into a honeycomb structure; and the filler (22) is arranged in the gaps between the plurality of hexagonal insulating layers (21); The protection component (30) comprises a pressure-resistant layer (31), an anti-corrosion layer (32), a sealing layer (33) and a wear-resistant layer (34) which are arranged outside the filler (22).

2. A mining drag cable according to claim 1, characterized in that: A plurality of support plates (23) are arranged in the filler (22), and the support plates (23) are arranged in a recessed position outside the honeycomb structure.

3. A mining drag cable according to claim 2, characterized in that: The protective layer (11) is formed by longitudinally wrapping a rubber pad, and the insulating layer is formed by wrapping a PVC material.

4. A mining drag cable according to any one of claims 1 to 3, characterized in that: The filler (22) is a mineral fireproof layer, and the pressure-resistant layer (31) is sleeved on the outer side wall of the filler (22) and is wrapped with a mixed nitrile polyvinyl chloride material.

5. A mining drag cable according to claim 4, characterized in that: The anti-corrosion layer (32) is formed by sheathing a polyethylene tube, and the sealing layer (33) is formed by winding a plastic film.

6. A mining drag cable according to claim 5, characterized in that: The wear-resistant layer (34) is formed by sheathing with polyurethane material.

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