Optical fiber composite reinforced metal shielding rubber jacketed flexible cable for coal mining machine

Abstract

The utility model relates to the technical field of cables, in particular to an optical fiber composite reinforced metal shielding rubber jacketed flexible cable for a coal mining machine, which comprises a cable core, and an isolating layer, an inner sheath, a reinforcing layer and an outer sheath which are sequentially coated outside the cable core, and is characterized in that the cable core is formed by twisting at least three power wire cores, an optical fiber assembly and a control wire core; the cable core is filled with a deformable ground wire core along the axial direction of the cable core in a central twisting gap of the power wire core and the control wire core, the power wire core is tightly attached to the optical fiber assembly, and the cable core is filled with a high-temperature filling rope along the axial direction of the cable core in a peripheral twisting gap of the power wire core, the optical fiber assembly and the control wire core. The cable provided by the utility model can keep stable operation in a normal reciprocating dragging working environment with large coal dust, much gas, moisture, water spraying and coal cutting of a coal mining machine in an underground coal mine, and the service life of the cable is greatly prolonged at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a kind of coal winning machine optical fiber composite reinforced metal shielded rubber jacketed flexible cable. BACKGROUND

[0002] Coal winning machine cable is generally used for the power connection line of underground coal mining equipment, but with continuous development, ordinary coal winning machine cable has gradually failed to meet production needs, and needs to consider signal transmission while meeting daily needs, and optical fiber is the most ideal channel for current digital communication, with high transmission rate and good transmission quality, and is promoted in various fields;And coal winning machine cable for coal mine is often used to drag, which causes the service life of the cable to be greatly reduced, increasing the cost of coal mining invisibly, so it is urgent to develop a cable that improves the drag resistance of coal winning machine cable while considering signal transmission. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of coal winning machine optical fiber composite reinforced metal shielded rubber jacketed flexible cable, to solve the technical problem proposed in the above background technology.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A kind of coal winning machine optical fiber composite reinforced metal shielded rubber jacketed flexible cable, including cable core and the isolation layer 1, inner protective layer 2, reinforcing layer 3, outer sheath 4 covered in cable core outside in sequence, it is characterized in that: the cable core is twisted from at least three power line core, optical fiber assembly and control line core;The cable core is filled with deformable ground wire core 5 in the center twisting gap of power line core and control line core along cable core axial direction, the power line core is closely attached with optical fiber assembly, the cable core is filled with high-temperature filling rope 6 in the peripheral twisting gap of power line core, optical fiber assembly and control line core along cable core axial direction.

[0006] The power line core includes power line core conductor 7, the outside of power line core conductor 7 is covered with power line core insulating layer 8 and metal fiber braided shielding layer 9 in sequence;The control line core includes control line core sheath 11 for covering twisted control line core conductor 10, the outside of control line core conductor 10 is covered with control line core insulating layer 12;The optical fiber assembly includes twisted optical fiber 13 and the optical fiber sheath 14 for covering optical fiber 13.

[0007] The isolation layer 1 is a layer of polyester tape longitudinal package or wrap-around structure, which can effectively isolate insulation and conductor, and has good moisture-proof effect.

[0008] The insulating layer is formed by extruding ethylene-propylene rubber, and the linear molecular structure is changed into three-dimensional network molecular structure by steam vulcanization crosslinking, so that the long-term working temperature of the cable can be increased to 90 DEG C, and the material performance is significantly improved.

[0009] The metal fiber braided shielding layer 9 is composed of a non-metal shielding layer and a metal shielding layer, and the surface of the insulating layer is a shielding structure composed of a semi-conductive nylon belt and a metal fiber braided layer.

[0010] The high-temperature filling rope 6 is filled with incompatible filling materials to ensure the stability of the cable performance and the roundness of the cable.

[0011] The inner protective layer 2 not only protects the cable core, but also has certain tensile capacity, protects the optical fiber from damage in the subsequent process, and ensures the roundness of the cable, which is the basis for the identification of the reinforcing layer process and the sheath extrusion process.

[0012] The reinforcing layer 3 can enhance the tensile strength to improve the mechanical strength of the cable, and will not cause damage to the cable during dragging use.

[0013] The outer sheath 4 is extruded by high-strength flame-retardant chlorinated polyethylene sheath rubber, and the sheath has good corrosion resistance, moisture resistance, wear resistance, tear resistance, bending resistance, flame resistance, oil resistance, and atmospheric aging resistance.

[0014] The optical fiber 13 is a glass optical fiber which is not resistant to bending and has a bending radius that cannot be too small.

[0015] The conductor of the utility model is twisted by multiple tinned soft copper conductors, and the conductor surface is required to be round, smooth and without burrs.

[0016] The color yarn color separation is used for the color separation of the core, and different colored color yarns are embedded during the metal shielding process to identify the core.

[0017] The utility model discloses a kind of coal winning machine optical fiber composite reinforced metal shielded rubber jacketed flexible cable, the cable is sequentially provided with tin-plated conductor, isolation layer, insulating layer, non-metallic shielding layer, metal shielding layer, inner protective layer, reinforcing layer, outer protective layer from inside to outside.The utility model patent, novel structure, convenient operation, place optical fiber in the interstice outside cable core, can protect optical fiber from being damaged, the rest interstice is filled with filling material to fill round, use thin round steel wire and nylon silk weaving as reinforcing layer outside inner protective layer, can guarantee the softness of cable while guaranteeing the tensile resistance of cable, provide convenience for the laying and use of cable, solve the tensile resistance of existing coal winning machine cable, the problem of slow transmission rate.The structure can keep stable operation in the environment of large coal dust, much gas, damp, water, coal winning machine coal cutting normal reciprocating dragging work in coal mine, simultaneously also greatly increase the service life of cable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model.

[0019] In the drawing: isolation layer 1, inner protective layer 2, reinforcing layer 3, outer sheath 4, ground wire core 5, high-temperature filling rope 6, power line core conductor 7, power line core insulating layer 8, metal fiber woven shielding layer 9, control line core conductor 10, control line core sheath 11, control line core insulating layer 12, optical fiber 13, optical fiber protective layer 14. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] A kind of coal winning machine optical fiber composite reinforced metal shielded rubber jacketed flexible cable, as shown in Figure 1 It includes cable core and isolation layer 1, inner protective layer 2, reinforcing layer 3, outer sheath 4 successively covered outside cable core, and the cable core is twisted by at least three power line cores, optical fiber assembly and control line core;The cable core is filled with deformable ground wire core 5 in the center twisting gap of power line core and control line core along cable core axial direction, the power line core is closely attached with optical fiber assembly, and the cable core is filled with high-temperature filling rope 6 in the peripheral twisting gap of power line core, optical fiber assembly and control line core along cable core axial direction.

[0022] The power core comprises a power core conductor 7, the outer part of the power core conductor 7 is sequentially covered by a power core insulating layer 8 and a metal fiber braided shielding layer 9; the control core comprises a control core sheath 11 for covering the twisted control core conductor 10, the outer part of the control core conductor 10 is covered by a control core insulating layer 12; the optical fiber assembly comprises the twisted optical fiber 13 and an optical fiber sheath 14 for covering the optical fiber 13.

[0023] The isolation layer 1 is a longitudinal wrapping or winding structure of a polyester tape, which can effectively isolate the conductor and the insulating layer and has good moisture-proof effect.

[0024] The insulating layer is made of ethylene-propylene rubber and is extruded, and the linear molecular structure is changed into a three-dimensional network molecular structure by steam vulcanization crosslinking, so that the long-term working temperature of the cable can be increased to 90℃, and the material performance is significantly improved. The ethylene-propylene rubber after vulcanization has good electrical insulation performance, high chemical stability, high environmental stress resistance, high mechanical strength and good safety.

[0025] The metal fiber braided shielding layer 9 is a shielding structure composed of a non-metal shielding layer and a metal shielding layer, and the surface of the insulating layer is a shielding structure composed of a layer of semiconductive nylon tape and a metal fiber braided layer, which is closely connected with the ground wire and can shield electromagnetic interference, ground protection, resist external electromagnetic interference and the ability of the system itself to radiate electromagnetic interference, effectively protecting the safety of the electrical system.

[0026] The high-temperature filling rope 6 is filled with incompatible filling materials to ensure the stability of the cable performance and the roundness of the cable.

[0027] The inner protective layer 2 not only protects the cable core, but also has certain tensile capacity to protect the optical fiber from damage in the subsequent process, and can also ensure the roundness of the cable, which is the basis for the identification of the reinforcing layer process and the sheath extrusion process.

[0028] The reinforcing layer 3 can enhance the tensile strength to improve the mechanical strength of the cable, and will not cause damage to the cable during dragging use. The galvanized fine round steel wire and the nylon wire are woven to form the reinforcing layer of the cable. Compared with the all-steel wire reinforcing layer structure, this structure greatly reduces the cost of the reinforcing layer and also retains the softness of the cable, which is convenient for construction and use. In addition, it also has high magnetic permeability and good magnetic shielding effect, which can prolong the service life of the cable.

[0029] The outer sheath 4 is extruded by high-strength flame-retardant chlorinated polyethylene sheath rubber. The sheath has good corrosion resistance, moisture resistance, wear resistance, tear resistance, bending resistance, flame resistance, oil resistance, and atmospheric aging resistance, etc. It can meet the needs of various harsh environments underground, is not soluble in general solvents, has small water absorption, and excellent electrical insulation.

[0030] The optical fiber 13 is a glass optical fiber which is not resistant to bending and the bending radius cannot be too small, and the optical fiber is protected by using a vulcanized elastomer rubber material and a high-elasticity high-strength support to ensure that the optical fiber is not damaged.

[0031] The conductor of the utility model is twisted by multiple strands of tinned soft copper conductor, and the conductor surface is required to be round, smooth and without burrs.

[0032] The color yarn color separation is used for the color yarn color separation of the core identification, and different color yarns are embedded during the metal shielding process to identify the core.

[0033] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be the replacement of part of the structure, device, method step, or the complete technical scheme. According to the technical scheme and the utility model concept of the utility model, equivalent replacement or change should be covered in the protection scope of the utility model.

Claims

1. A fiber optic composite reinforced metal shielded rubber-sheathed flexible cable for coal mining machines, comprising a cable core and, sequentially wrapped around the cable core, an isolation layer (1), an inner sheath (2), a reinforcing layer (3), and an outer sheath (4), characterized in that: The cable core is formed by twisting together at least three power cores, optical fiber assemblies and control cores; the cable core is filled with a deformable ground core (5) in the central twisting gap between the power cores and control cores along the cable core axis; the cable core is filled with a high-temperature filler rope (6) in the outer twisting gap between the power cores, optical fiber assemblies and control cores along the cable core axis.

2. The fiber optic composite reinforced metal shielded rubber-sheathed flexible cable for coal mining machines according to claim 1, characterized in that: The power core is tightly bonded to the optical fiber assembly.

3. The fiber optic composite reinforced metal shielded rubber-sheathed flexible cable for coal mining machines according to claim 1, characterized in that: The power core includes a power core conductor (7), and the power core conductor (7) is covered with a power core insulation layer (8) and a metal fiber braided shielding layer (9) in sequence.

4. The fiber optic composite reinforced metal shielded rubber-sheathed flexible cable for coal mining machines according to claim 1, characterized in that: The control core includes a control core sheath (11) for covering the stranded control core conductor (10), and the control core conductor (10) is covered with a control core insulation layer (12).

5. The fiber optic composite reinforced metal shielded rubber-sheathed flexible cable for coal mining machines according to claim 1, characterized in that: The optical fiber assembly includes stranded optical fibers (13) and an optical fiber sheath (14) for covering the optical fibers (13).

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