A type 241.1 abrasion-resistant flexible mining cable

Abstract

The utility model discloses a kind of Type241.1 type anti-tensile wear-resistant mobile mining rubber jacketed flexible cable, it is related to cable technical field, including inner core body and protective layer;The inside center of the inner core body is provided with monitoring wire core conductor, power wire core conductor, ground wire core conductor and saddle-shaped shielding layer;Monitoring wire core conductor, power wire core conductor and ground wire core conductor all adopt the soft copper wire twisting of multiple strands of oxygen-free copper pole drawing, high conductivity, guarantee the softness of cable in use in the large load flow operation and movement, inner core body adopts 3+3 structure, saddle-shaped pad is located at cable center position, power wire core and ground wire core gap arrangement, cable structure symmetry, stable, meet the use requirement of cable in mine down pull and move, reinforcing layer and outer sheath are used in cooperation, can significantly improve the tensile property and absorb part torsional stress of cable, prevent cable internal structure loose when bending or rotating, can meet the complex environment use of down pull and move.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically a Type 241.1 tensile and wear-resistant mobile mining rubber-sheathed flexible cable. Background Technology

[0002] A cable is a conductive wire consisting of one or more mutually insulated conductors (such as copper, aluminum, etc.) and an outer insulating protective layer. It is used to transmit electrical energy, signals, or realize electromagnetic energy conversion. Its core feature is internal current transmission and external insulation, which can ensure the transmission efficiency of current or signals and prevent safety hazards such as leakage and electromagnetic interference. Mining rubber-sheathed flexible cables are specially designed for harsh environments such as mines and tunnels. They are the core components for power transmission of mobile equipment (such as coal mining machines and conveyors) and fixed equipment in underground coal mines.

[0003] Existing rubber-sheathed flexible cables for mining have certain drawbacks. They are typically used in equipment such as coal mine cranes, electric gantry cranes, and coal mining machines. The cables move with the equipment, but they lack properties such as flexibility, tensile strength, abrasion resistance, bending resistance, and flame retardancy. They are prone to twisting and deformation during use, which affects production efficiency and electrical safety, and fails to meet people's needs. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a Type 241.1 tensile and wear-resistant mobile mining rubber-sheathed flexible cable.

[0005] A Type 241.1 tensile and abrasion-resistant mobile mining rubber-sheathed flexible cable includes: an inner core and a protective layer disposed on the outside of the inner core; wherein, a monitoring conductor and several sets of power conductors and ground conductors symmetrically disposed on the outside of the monitoring conductor are disposed at the center of the inner core; a saddle-shaped shielding layer is disposed at the center of the inner core and is respectively connected to the power conductors and ground conductors; the monitoring conductor is installed at the center of the saddle-shaped shielding layer.

[0006] As a further embodiment of this utility model: several groups of power conductor cores and several groups of ground conductor cores are arranged in a circular array within the inner core; the power conductor cores and ground conductor cores are arranged in a spaced-apart and close-fitting manner; the power conductor cores and ground conductor cores are both connected to the outer surface of the saddle-shaped shielding layer; the monitoring conductor core, power conductor core, and ground conductor core are all made of soft copper wires drawn from multiple oxygen-free copper rods, which have high conductivity and ensure the flexibility of the cable during high current-carrying operation and movement.

[0007] As a further embodiment of this utility model: the power core conductor is provided with a power core insulation layer and a power core shielding layer by a double-layer co-extrusion method; the power core insulation layer is an extruded ethylene propylene rubber insulation material with excellent insulation performance and high mechanical strength; the power core shielding layer is a peelable elastomeric semi-conductive rubber shielding material; the power core conductor, the power core insulation layer and the power core shielding layer constitute the power core structure.

[0008] As a further embodiment of this utility model: a ground core shielding layer made of extruded elastomer semi-conductive rubber shielding material is provided on the outside of the ground core conductor; the ground core conductor and the ground core shielding layer constitute a ground core structure.

[0009] As a further embodiment of this utility model: a monitoring core insulation layer is provided on the outside of the monitoring core conductor; the monitoring core insulation layer is an extruded ethylene propylene rubber insulation material with excellent insulation performance and high mechanical strength; the saddle-shaped shielding layer is an extruded elastomer semi-conductive rubber shielding material; the monitoring core conductor, the monitoring core insulation layer and the saddle-shaped shielding layer constitute a saddle-shaped pad.

[0010] As a further embodiment of this utility model: the power core structure, the ground core structure, and the saddle-shaped pad core stranded together form a cable core structure; the cable core structure is externally extruded with PCP semi-conductive rubber material as a cable core shielding layer; the cable core structure and the cable core shielding layer constitute the inner core.

[0011] As a further embodiment of this utility model: the protective layer includes a reinforcing layer disposed outside the cable core shielding layer and an outer sheath disposed outside the reinforcing layer; the reinforcing layer is woven from polyester yarn; the outer sheath is made of PCP rubber material with excellent extrusion mechanical properties.

[0012] As a further aspect of this utility model: the number of power core structures and ground core structures are both set to three groups, and the rubber-sheathed flexible cable adopts a 3+3 structure. The saddle-shaped pad is located at the center of the cable, and the power core structures and ground core structures are arranged with gaps, making the rubber-sheathed flexible cable symmetrical and stable, meeting the requirements for cable use in underground pulling and moving operations. The outer sheath is made of high-strength, oil-resistant, tear-resistant, and flame-retardant PCP rubber material, which has high strength, high flame retardancy, oil resistance, and excellent tear resistance, and can meet the requirements for use in complex underground dragging and moving environments.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model, through the inner core and protective layer, uses multiple strands of oxygen-free copper rods to draw soft copper wires to make the monitoring conductor, power conductor and ground conductor. It has high conductivity and ensures the flexibility of the cable during high current carrying capacity operation and movement. The inner core adopts a 3+3 structure, with the saddle-shaped pad located at the center of the cable. The power conductor and ground conductor are arranged with gaps. The cable structure is symmetrical and stable, meeting the requirements for the cable to be pulled and moved in the mine. The reinforcement layer and outer sheath work together to significantly improve the tensile performance of the cable and absorb some torsional stress, preventing the internal structure of the cable from loosening when it is bent or rotated. It has high strength, high flame retardancy, oil resistance and tear resistance, and can meet the complex environment of underground dragging and movement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0015] Figure 2 This is a partial structural diagram of the inner core and protective layer in this utility model.

[0016] Figure 3 This is a partial structural diagram of the saddle-shaped shielding layer in this utility model.

[0017] Figure 4 This is a partial structural diagram of the power conductor core in this utility model.

[0018] In the diagram: 1. Inner core; 2. Protective layer; 3. Monitoring conductor; 4. Power conductor; 5. Ground conductor; 6. Saddle-shaped shielding layer; 7. Power conductor insulation layer; 8. Power conductor shielding layer; 9. Ground conductor shielding layer; 10. Monitoring conductor insulation layer; 11. Cable core structure; 12. Cable core shielding layer; 13. Reinforcing layer; 14. Outer sheath. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] Example 1 Please see Figure 1 - Figure 4This application provides a Type 241.1 tensile and wear-resistant mobile mining rubber-sheathed flexible cable, comprising: an inner core 1 and a protective layer 2 disposed on the outside of the inner core 1; wherein, a monitoring conductor 3 is disposed at the center of the inner core 1, and several sets of power conductors 4 and ground conductors 5 are symmetrically disposed on the outside of the monitoring conductors 3; a saddle-shaped shielding layer 6 is disposed at the center of the inner core 1 and is respectively connected to the power conductors 4 and the ground conductors 5; the monitoring conductor 3 is installed at the center of the saddle-shaped shielding layer 6.

[0021] Several sets of power conductors 4 and several sets of ground conductors 5 are arranged in a circular array in the inner core 1; the power conductors 4 and ground conductors 5 are arranged in close proximity; the power conductors 4 and ground conductors 5 are connected to the outer surface of the saddle-shaped shielding layer 6; the monitoring conductors 3, power conductors 4 and ground conductors 5 are all made of soft copper wires drawn from multiple oxygen-free copper rods, which have high conductivity and ensure the flexibility of the cable during high current-carrying operation and movement.

[0022] The power conductor 4 is provided with a double-layer co-extrusion process for a power core insulation layer 7 and a power core shielding layer 8. The power core insulation layer 7 is an extruded ethylene propylene rubber insulation material with excellent insulation performance and high mechanical strength. The power core shielding layer 8 is a peelable elastomeric semi-conductive rubber shielding material. The power conductor 4, the power core insulation layer 7, and the power core shielding layer 8 constitute the power core structure.

[0023] The ground conductor 5 is provided with a ground shielding layer 9 made of extruded elastomer semi-conductive rubber shielding material on its outer side; the ground conductor 5 and the ground shielding layer 9 constitute the ground structure.

[0024] The outer side of the monitoring conductor 3 is provided with a monitoring core insulation layer 10; the monitoring core insulation layer 10 is an extruded ethylene propylene rubber insulation material with excellent insulation performance and high mechanical strength; the saddle-shaped shielding layer 6 is an extruded elastomer semi-conductive rubber shielding material; the monitoring conductor 3, the monitoring core insulation layer 10 and the saddle-shaped shielding layer 6 form a saddle-shaped pad.

[0025] The cable core structure is composed of a power core structure, a ground core structure, and a saddle-shaped pad core stranded cable. The cable core structure 11 is externally extruded with PCP semi-conductive rubber material as a cable core shielding layer 12. The cable core structure 11 and the cable core shielding layer 12 constitute the inner core 1.

[0026] The protective layer 2 includes a reinforcing layer 13 disposed outside the cable core shielding layer 12 and an outer sheath 14 disposed outside the reinforcing layer 13; the reinforcing layer 13 is woven from polyester yarn; the outer sheath 14 is made of PCP rubber material with excellent extrusion mechanical properties.

[0027] The number of power core structures and ground core structures is set to three groups. The rubber-sheathed flexible cable adopts a 3+3 structure, with the saddle-shaped pad located at the center of the cable. The power core structures and ground core structures are arranged with gaps, making the rubber-sheathed flexible cable symmetrical and stable, meeting the requirements for cable use in underground pulling and moving. The outer sheath 14 is made of high-strength, oil-resistant, tear-resistant, and flame-retardant PCP rubber material, which has high strength, high flame retardancy, oil resistance, and excellent tear resistance, and can meet the requirements for use in the complex environment of underground dragging and moving.

[0028] In summary, a monitoring core insulation layer 10 is extruded over the monitoring core conductor 3 and installed into a saddle-shaped shielding layer 6 to form a saddle-shaped pad. A ground core shielding layer 9 is set on the outside of the ground core conductor 5 to form a ground core structure. The power core conductor 4, the power core insulation layer 7, and the power core shielding layer 8 are formed into a power core structure. The saddle-shaped pad, the three sets of ground core structures, and the three sets of power core structures are twisted together to form a cable core structure 11. The cable core shielding layer 12 is processed onto the outside of the cable core structure 11. The reinforcing layer 13 and the outer sheath 14 are sequentially processed onto the outside of the cable core shielding layer 12 to form a rubber-sheathed flexible cable.

[0029] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A Type 241.1 tensile-resistant and wear-resistant mobile mining rubber-sheathed flexible cable, characterized in that, include: Inner core (1) and protective layer (2) disposed on the outside of inner core (1); Among them, the inner core (1) is provided with a monitoring conductor (3), three sets of power conductors (4) symmetrically arranged outside the monitoring conductor (3) and three sets of ground conductors (5). The inner core (1) has a saddle-shaped shielding layer (6) that is connected to the power conductor (4) and the ground conductor (5) respectively. The monitoring conductor (3) is installed at the center of the saddle-shaped shielding layer (6); The three sets of power conductors (4) and the three sets of ground conductors (5) are arranged in a circular array in the inner core (1); The power conductor (4) and the ground conductor (5) are arranged in close proximity and are both connected to the outer surface of the saddle-shaped shielding layer (6); The power conductor (4) is provided with a power core insulation layer (7) and a power core shielding layer (8) by double-layer co-extrusion. The power conductor (4), the power insulation layer (7), and the power shielding layer (8) constitute the power core structure; The ground conductor (5) is provided with a ground shielding layer (9) made of extruded elastomer semiconductive rubber shielding material on the outside. The ground conductor (5) and the ground shield (9) form the ground structure; The outer side of the monitoring conductor (3) is provided with a monitoring core insulation layer (10) made of ethylene propylene rubber. The monitoring conductor (3), the monitoring insulation layer (10), and the saddle-shaped shielding layer (6) form a saddle-shaped pad. The power core structure, ground core structure and saddle-shaped pad core stranded together form a cable core structure (11). The inner core (1) is composed of the cable core structure (11) and the cable core shielding layer (12). The protective layer (2) includes a reinforcing layer (13) disposed outside the cable core shielding layer (12) and an outer sheath (14) disposed outside the reinforcing layer (13).

2. The Type 241.1 tensile-resistant and wear-resistant mobile mining rubber-sheathed flexible cable according to claim 1, characterized in that, The insulation layer (7) of the power core is an extruded ethylene propylene rubber insulation material with excellent insulation performance and high mechanical strength; The power core shielding layer (8) is a peelable elastomeric semi-conductive rubber shielding material; The monitoring conductor (3), power conductor (4) and ground conductor (5) are all made of soft copper wires drawn from multiple oxygen-free copper rods. The cable core structure (11) is externally extruded with PCP semi-conductive rubber material as a cable core shielding layer (12). The saddle-shaped shielding layer (6) is an extruded elastomer semi-conductive rubber shielding material; The reinforcing layer (13) is woven from polyester yarn; The outer sheath (14) is made of high-strength, oil-resistant, tear-resistant, and flame-retardant PCP rubber material.

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