Mobile metal shielding monitoring reinforced rubber jacketed flexible cable for coal mine

Abstract

The utility model discloses a mobile metal shielding monitoring reinforced rubber jacketed flexible cable for a coal mine, which belongs to the technical field of cable reinforcement and comprises a protective layer, a shielding layer sleeved on the surface of the protective layer, a monitoring layer sleeved on the surface of the shielding layer, an anti-bending layer sleeved on the surface of the monitoring layer, and a metal shielding layer sleeved on the surface of the anti-bending layer. The anti-bending cable comprises an anti-bending layer, anti-bending steel wires are arranged at multiple positions in the anti-bending layer, the multiple anti-bending steel wires are twisted in a twisted structure, and a braid layer is sleeved on the surface of the anti-bending layer. In the anti-bending cable, through arrangement of the anti-bending steel wires, due to multiple corners in a mine, the braid layer is light in material and high in strength; the braid layer sleeved in the cable ensures that the cable main body is not broken, when the cable is impacted, the anti-bending layer sleeved in the cable bears most impact force, and the anti-bending steel wires twisted in the anti-bending layer extrude each other to counteract external impact force and prevent the cable from deforming when the cable is impacted.

Description

Technical Field

[0001] This utility model belongs to the field of cable reinforcement technology, and in particular relates to a mobile metal shielded monitoring reinforced rubber-sheathed flexible cable for coal mines. Background Technology

[0002] The high-strength mobile metal-shielded monitoring rubber-sheathed flexible cable for coal mines features a reinforced structural design, equipped with a tensile and abrasion-resistant outer sheath and a high-density shielding layer. It is specially designed for extreme underground working conditions. Its dual-protection monitoring core can provide real-time feedback on insulation status. Combined with an intelligent protection system, it can quickly cut off faults. The optimized anti-torsion structure ensures stable performance under frequent dragging. It is the preferred cable for high-safety-level coal mine equipment, providing multiple safety guarantees for underground operations.

[0003] Currently available high-strength shielded monitoring rubber-sheathed flexible cables are repeatedly bent when used inside mines, causing the various layers of the cable's internal sheath to loosen. If the cable is subjected to impact, the entire cable will deform, thus requiring improvement.

[0004] Based on this, this utility model designs a mobile metal-shielded monitoring reinforced rubber-sheathed flexible cable for coal mines to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that when used in mines, repeated bending of the cable causes the layers of the internal sheath to become loose, and the cable will deform as a whole if it is subjected to impact. Therefore, a mobile metal shielded monitoring reinforced rubber-sheathed flexible cable for coal mines is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mobile metal-shielded monitoring reinforced rubber-sheathed flexible cable for coal mines includes a protective layer, a shielding layer sleeved on the surface of the protective layer, a monitoring layer sleeved on the surface of the shielding layer, an anti-bending layer sleeved on the surface of the monitoring layer, anti-bending steel wires provided in multiple places inside the anti-bending layer, and multiple anti-bending steel wires twisted together in a twisted structure, and a braided layer sleeved on the surface of the anti-bending layer.

[0008] As a further description of the above technical solution:

[0009] The protective layer is fitted with a filling layer inside, and the filling layer has an anti-bending groove inside, and an anti-bending shaft is fixedly installed inside the anti-bending groove.

[0010] As a further description of the above technical solution:

[0011] The filling layer has multiple gas storage slots inside, and gas storage hoses are installed inside the gas storage slots.

[0012] As a further description of the above technical solution:

[0013] The filling layer has multiple shielding sleeves inside, and the shielding sleeves contain power cells.

[0014] As a further description of the above technical solution:

[0015] The monitoring layer has multiple monitoring wires installed inside, and the monitoring wires are connected to the tail end of the shielding layer. The surface of the braided layer is covered with a protective jacket.

[0016] As a further description of the above technical solution:

[0017] The outer side of the protective jacket is fixedly equipped with wear-resistant protrusions in multiple places, and the surface of the protective jacket is provided with reflective strips in multiple places.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] 1. In this utility model, by setting anti-bending steel wires and braided layers, the cable is used inside the mine. Because there are many corners inside the mine, the cable is often bent. The material of the braided layer is lightweight and has high strength. When the cable is bent, the braided layer inside the cable ensures that the main body of the cable is not broken. When the cable is impacted, the anti-bending layer inside the cable bears most of the impact force. The anti-bending steel wires twisted inside the anti-bending layer squeeze each other to offset the external impact force and prevent the cable from deforming when it is impacted.

[0020] 2. In this utility model, by setting up an air storage tank and an air storage hose, the current is transmitted through the power core during the use of the cable. During the transmission process, heat is generated. If a short circuit occurs inside the cable, the short circuit point will have a high temperature. The high temperature will cause the shielding sleeve to melt first. If the power is not cut off in time, the high temperature will melt the air storage hose inside the air storage tank. The inert gas released after multiple air storage hoses melt will temporarily create a low-oxygen space inside the cable to prevent the high temperature inside the cable from generating an open flame and causing an electrical fire. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of a mobile metal-shielded monitoring reinforced rubber-sheathed flexible cable for coal mines, as proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of a mobile metal-shielded monitoring reinforced rubber-sheathed flexible cable for coal mines proposed in this utility model.

[0023] Figure 3 This is a cross-sectional structural diagram of a mobile metal-shielded monitoring reinforced rubber-sheathed flexible cable for coal mines proposed in this utility model.

[0024] Legend:

[0025] 1. Protective layer; 2. Shielding layer; 3. Monitoring layer; 4. Anti-bending layer; 5. Anti-bending steel wire; 6. Braided layer; 7. Filling layer; 8. Anti-bending groove; 9. Anti-crankshaft; 10. Air storage tank; 11. Air storage hose; 12. Shielding sleeve; 13. Power battery core; 14. Monitoring wire core; 15. Protective outer jacket; 16. Wear-resistant protrusions; 17. Reflective strip. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides a technical solution: a mobile metal shielded monitoring reinforced rubber-sheathed flexible cable for coal mines, including a protective layer 1, a shielding layer 2 sleeved on the surface of the protective layer 1, a monitoring layer 3 sleeved on the surface of the shielding layer 2, an anti-bending layer 4 sleeved on the surface of the monitoring layer 3, multiple anti-bending steel wires 5 provided inside the anti-bending layer 4, and the multiple anti-bending steel wires 5 are twisted in a twisted structure, and a braided layer 6 sleeved on the surface of the anti-bending layer 4.

[0028] The specific implementation method is as follows: a filling layer 7 is sleeved inside the protective layer 1, an anti-bending groove 8 is opened inside the filling layer 7, and an anti-bending shaft 9 is fixedly installed inside the anti-bending groove 8.

[0029] By setting up anti-bending groove 8 and anti-bending shaft 9, the cable is used inside the mine. Because there are many corners inside the mine, the cable will be repeatedly dragged and bent during use. During the bending process of the cable, the anti-bending shaft 9 inside the anti-bending groove 8 bears most of the stress and keeps the cable stable as a whole, so as to prevent the cable from breaking when bending.

[0030] The specific implementation method is as follows: multiple air storage slots 10 are provided inside the filling layer 7, and air storage hoses 11 are installed inside the air storage slots 10.

[0031] By setting up an air storage tank 10 and an air storage hose 11, if a short circuit occurs in a section of the cable during use, the excessive current will cause the internal temperature of the cable to rise. If the temperature is too high and the power is not cut off in time, the high temperature will cause the air storage hose 11 inside the air storage tank 10 to melt. Multiple air storage hoses 11 will release inert gas, making the inside of the cable temporarily a low-oxygen space to prevent open flames from being generated inside the cable due to high temperature and to prevent electrical fires from occurring inside the mine.

[0032] The specific implementation method is as follows: multiple shielding sleeves 12 are sleeved inside the filling layer 7, and power cells 13 are provided inside the shielding sleeves 12.

[0033] By setting up a shielding sleeve 12 and a power core 13, during the use of the cable, the current flowing through the power core 13 will generate magnetic force and magnetic field. Excessive current will generate a magnetic field that will affect the gas instruments in the mine. By attaching a shielding sleeve 12 to the surface of the power core 13, the magnetic field generated by the current can be shielded, preventing the instruments in the mine from being affected by the magnetic field.

[0034] The specific implementation method is as follows: multiple monitoring wire cores 14 are installed inside the monitoring layer 3, and the monitoring wire cores 14 are connected to the tail end of the shielding layer 2. A protective jacket 15 is fitted onto the surface of the braided layer 6.

[0035] By setting up a monitoring layer 3 and a monitoring core 14, and short-circuiting the monitoring core 14 inside the monitoring layer 3 with the conductor inside the shielding layer 2, and connecting the other end of the monitoring core 14 to the insulation monitoring device, a closed loop is formed. If the shielding layer 2 is damaged, damp, or aged, resulting in an increase in leakage current, the relay output contact of the monitoring device will open, controlling the power supply switch to trip, cutting off the cable power supply, and triggering an audible and visual alarm to prevent accidents from occurring in the mine.

[0036] The specific implementation method is as follows: wear-resistant protrusions 16 are fixedly installed on the outer side of the protective jacket 15, and reflective strips 17 are provided on the surface of the protective jacket 15 in multiple places.

[0037] By incorporating wear-resistant protrusions 16 and reflective strips 17, this cable is used inside the mine. During use, the wear-resistant protrusions 16 on the surface of the protective jacket 15 rub against the ground, preventing the outer protective jacket 15 of the cable from directly rubbing against the ground. In the dark areas inside the mine, the reflective strips 17 on the surface of the protective jacket 15 make the cable's position more visible, preventing people from tripping during work and ensuring the safety of the cable and the workers.

[0038] Working principle and usage: First, manually inspect the outer side of the cable before use. During use, connect one side of the cable to the power supply. Current is transmitted through the power core 13. The magnetic force and magnetic field generated by the current transmission are shielded by the shielding sleeve 12 on the surface of the power core 13 and the shielding layer 2 on the surface of the protective layer 1. A complete circuit is formed by short-circuiting the monitoring wire core 14 inside the monitoring layer 3 with the conductor inside the shielding layer 2. If the shielding layer 2 has problems such as aging or damage, the resistance inside the monitoring layer 3 will increase, the relay output contact of the monitoring device will open, control the power supply switch to trip, and cut off the cable power supply to prevent accidents. If the cable short-circuits internally... In the event of overheating, the high temperature melts the gas storage hoses 11 inside the gas storage tank 10. The melting of multiple gas storage hoses 11 releases the inert gas inside, temporarily creating a low-oxygen environment inside the cable to prevent open flames from forming due to high temperature. If the cable suffers excessive impact, the anti-bending steel wires 5 inside the anti-bending layer 4 bear most of the impact. The impact is buffered by the mutual compression of the strands, preventing the cable from deforming when subjected to impact. When the cable bends, the braided layer 6 on the surface of the anti-bending layer 4 ensures that the cable as a whole is not pulled apart by stress. The wear-resistant protrusions 16 on the outside of the cable rub against the inner wall of the mine to prevent the cable body from directly rubbing against the ground. The reflective strips 17 remind construction workers to pay attention to the cable to prevent them from tripping over it.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mobile metal-shielded reinforced rubber-sheathed flexible cable for monitoring in coal mines, comprising a protective layer (1), characterized in that, The protective layer (1) is covered with a shielding layer (2), the shielding layer (2) is covered with a monitoring layer (3), the monitoring layer (3) is covered with an anti-bending layer (4), the anti-bending layer (4) has multiple anti-bending steel wires (5) inside, and the multiple anti-bending steel wires (5) are twisted together in a twisted structure. The anti-bending layer (4) is covered with a braided layer (6).

2. The mobile metal-shielded reinforced rubber-sheathed flexible cable for monitoring in coal mines according to claim 1, characterized in that, The protective layer (1) is fitted with a filling layer (7), and the filling layer (7) has an anti-bending groove (8) inside, and an anti-bending shaft (9) is fixedly installed inside the anti-bending groove (8).

3. The mobile metal-shielded reinforced rubber-sheathed flexible cable for monitoring in coal mines according to claim 2, characterized in that, The filling layer (7) has multiple gas storage slots (10) inside, and a gas storage hose (11) is installed inside the gas storage slot (10).

4. A reinforced rubber-sheathed flexible mobile metal-shielded monitoring cable for coal mines according to claim 2, characterized in that, The filling layer (7) has multiple shielding sleeves (12) inside, and the shielding sleeves (12) are equipped with power cells (13).

5. A reinforced rubber-sheathed flexible metal-shielded monitoring cable for coal mines according to claim 1, characterized in that, The monitoring layer (3) has multiple monitoring wire cores (14) installed inside, and the monitoring wire cores (14) are connected to the tail end of the shielding layer (2). The surface of the braided layer (6) is covered with a protective jacket (15).

6. A reinforced rubber-sheathed flexible metal-shielded monitoring cable for coal mines according to claim 5, characterized in that, The outer side of the protective jacket (15) is fixedly equipped with wear-resistant protrusions (16) at multiple locations, and the surface of the protective jacket (15) is provided with reflective strips (17) at multiple locations.

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