Anti-rolling trailing cable

Abstract

The utility model relates to an anti-rolling trailing cable, and belongs to the technical field of cables. According to the technical scheme, an ethylene propylene rubber insulator (2) is extruded outside an insulating wire core conductor (1) to form an insulating wire core, the outer surface of the insulating wire core is in an arc-shaped sawtooth shape, a compression-resistant layer (3) is extruded outside the plurality of insulating wire cores after the plurality of insulating wire cores form the cable, an inner sheath (4) is extruded outside the compression-resistant layer (3), a reinforcing layer (5) is woven outside the inner sheath (4), and an outer sheath (6) is extruded outside the reinforcing layer (5). The beneficial effects of the utility model are that the compression-resistant layer is added outside the insulating wire cores, so that a buffer layer is formed when the cable is rolled, and the insulating wire cores are protected; the outer edges of the insulating wire cores are arc-shaped and zigzag, so that the contact area between the insulating wire cores and the compression-resistant layer is increased, the tightness of the cable is improved, deformation is prevented, and the service life of the cable is prolonged; the fluorescent color strips are added on the surface of the outer sheath, so that the position of the cable can be found in time when the cable works at night and mobile equipment runs.

Description

Technical Field

[0001] This utility model relates to an anti-crushing and dragging cable, belonging to the field of cable technology. Background Technology

[0002] Dragging cables are flexible cables specifically designed for high-frequency movement and complex motion scenarios, possessing properties such as tensile strength, abrasion resistance, and bending resistance. Their core purpose is to protect cables from mechanical damage in dynamic environments while ensuring the stability of power or signal transmission. In mining processes, dragging cables are used to accompany large machinery, requiring them to be dragged back and forth across the ground for tens or even hundreds of meters. During this time, collisions, compression, and impacts are unavoidable, causing fatal damage, short circuits, and subsequent fires. Utility Model Content

[0003] The purpose of this invention is to provide an anti-crushing and dragging cable, which optimizes the cable structure, adds a pressure-resistant layer to ensure that the cable forms a buffer layer when subjected to crushing, protecting the insulated core. At the same time, fluorescent markings are added to ensure that the cable's location can be detected in time when the cable is working at night or when mobile equipment is running, effectively improving the cable's service life and solving the above-mentioned problems in the background technology.

[0004] The technical solution of this utility model is:

[0005] An anti-rolling drag cable includes an insulated conductor core, ethylene propylene rubber insulation, a compression-resistant layer, an inner sheath, a reinforcing layer, and an outer sheath. The insulated conductor core is formed by extruding ethylene propylene rubber insulation, and the outer surface of the insulated conductor core is arc-shaped serrated. After multiple insulated conductor cores are bundled together, a compression-resistant layer is extruded on the outside. An inner sheath is extruded on the outside of the compression-resistant layer. A reinforcing layer is braided on the outside of the inner sheath. An outer sheath is extruded on the outside of the reinforcing layer.

[0006] Furthermore, the outer edge of the outer sheath is provided with several fluorescent stripes along the circumferential direction.

[0007] Furthermore, an aramid rope is provided at the center of each of the insulated wire cores.

[0008] Furthermore, the insulated conductor core is a copper conductor.

[0009] Furthermore, the pressure-resistant layer is polyurethane foam.

[0010] Furthermore, the compression-resistant layer and the inner sheath are connected by an adhesive.

[0011] The positive effects of this utility model are as follows: adding an anti-compression layer outside the insulated core ensures that a buffer layer is formed when the cable is subjected to crushing, thus protecting the insulated core; the outer edge of the insulated core is arc-shaped and sawtooth-shaped, increasing the contact area between the insulated core and the anti-compression layer, improving the tightness of the cable, preventing deformation, and extending the service life of the cable; adding fluorescent stripes to the surface of the outer sheath ensures that the cable's location can be detected in a timely manner when the cable is working at night or when mobile equipment is running. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the gear-type mold structure of this utility model;

[0013] Figure 2 This is a sectional view of the gear-type mold of this utility model;

[0014] Figure 3 This is a schematic diagram of the inner sheath extrusion die structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of this utility model;

[0016] In the diagram: 1. Insulated conductor core; 2. Ethylene propylene rubber insulation; 3. Compression-resistant layer; 4. Inner sheath; 5. Reinforcing layer; 6. Outer sheath; 7. Fluorescent stripe; 8. Aramid rope. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] See attached document Figure 4 This embodiment provides an anti-crushing and dragging cable, comprising an insulated conductor core 1, ethylene propylene rubber insulation 2, a compression-resistant layer 3, an inner sheath 4, a reinforcing layer 5, an outer sheath 6, color stripes 7, and an aramid rope 8. The aramid rope 8 is provided at the center of the cable. The insulated conductor core 1 is covered with ethylene propylene rubber insulation 2 to form an insulated conductor core. The outer surface of the insulated conductor core is arc-shaped and serrated. Four insulated conductor cores are twisted together outside the aramid rope 8 to form a cable. A compression-resistant layer 3 is extruded outside the cable core. An inner sheath 4 is extruded outside the compression-resistant layer 3. A reinforcing layer 5 is braided outside the inner sheath 4. An outer sheath 6 is extruded outside the reinforcing layer 5. Four color stripes 7 are provided along the circumferential direction on the outer edge of the outer sheath 6.

[0019] Preferably, the insulated conductor 1 is a Class 6 cable conductor to ensure the flexibility of the cable during use.

[0020] In this embodiment, after the insulated wire core is cabled, no wrapping tape is wrapped around the outside of the cable, and the compression-resistant layer 3 is directly extruded, so that there is no gap between the compression-resistant layer 3 and the insulated wire core, and the insulated wire core and the sheath are more tightly connected.

[0021] The outer surface of the insulated wire core is arc-shaped and serrated, similar to the "outer edge of a gear," which can increase the contact area between the insulated wire core and the inner sheath 6 to a certain extent. (See attached diagram.) Figure 1 and 2 The extrusion die for the ethylene propylene rubber insulation 2 is a gear-shaped die. The outer contour of the extrusion hole of the gear-shaped die is similar to the "outer edge of a gear". Ethylene propylene rubber insulation 2 is extruded outside the insulated conductor 1. The outer contour of the ethylene propylene rubber insulation 2 matches the outer contour of the extrusion hole of the gear-shaped die.

[0022] In this embodiment, the pressure-resistant layer 3 is a polyurethane (PU) sponge.

[0023] The polyurethane (PU) foam is formulated as follows: polyether polyol (100 parts), TDI isocyanate (45 parts), flame retardant (melamine 10 parts), aluminum hydroxide (15 parts), with the above parts in mass ratio.

[0024] The foaming temperature of the compression-resistant layer 3 is 120-150℃.

[0025] The pressure of the gear-shaped mold is 4.0 ± 0.5 MPa.

[0026] An adhesive is added to the outside of the compression layer 3 to ensure that the compression layer 3 and the inner sheath 4 can be tightly bonded.

[0027] See attached document Figure 3 The inlet side of the extrusion hole of the inner sheath extrusion die is frustoconical, and the outlet side is cylindrical. The angle R between the inner wall of the inlet side and the center line is between 60° and 80°, which increases the extrusion pressure and increases the tightness of the insulation core and the inner sheath during the production process.

[0028] The reinforcing layer 5 is made of aramid rope, which is woven diagonally and crosswise to form a grid shape, with the weaving density controlled between 15% and 25%.

[0029] Both the inner sheath 4 and the outer sheath 6 are made of neoprene.

[0030] The inner sheath 4, the reinforcing layer 5, and the outer sheath 6 are tightly bonded together to form a whole, which increases the overall tensile and torsional resistance of the cable; during the winding and dragging process, it can resist the damage to the cable caused by tensile force and the internal structural damage caused by torsional force.

[0031] Four fluorescent strips 7 are added to the outer sheath 6 during the extrusion process. The fluorescent strips 7 are arranged at 90° intervals between adjacent fluorescent strips 7, ensuring that the fluorescent strips 7 can be seen from any angle of the cable. When the cable is working at night or when the mobile equipment is running, the staff can find the cable location in time.

Claims

1. A crush proof tow cable, characterized by: The application relates to a cable, which comprises insulated core conductors (1), ethylene-propylene rubber insulation (2), a pressure-resistant layer (3), an inner sheath (4), a reinforcing layer (5) and an outer sheath (6), the insulated core conductors (1) are extruded with ethylene-propylene rubber insulation (2) to form insulated core conductors, the outer surface of the insulated core conductors is arc-shaped and sawtooth-shaped, a plurality of insulated core conductors are cabled, the outer part of the cable is extruded with the pressure-resistant layer (3), the outer part of the pressure-resistant layer (3) is extruded with the inner sheath (4), the outer part of the inner sheath (4) is woven with the reinforcing layer (5), and the outer part of the reinforcing layer (5) is extruded with the outer sheath (6).

2. A roller compaction resistant towed electrical cable according to claim 1, characterised in that: The outer edge part of the outer sheath (6) is provided with a plurality of fluorescent color strips (7) in the circumferential direction.

3. A roller compaction resistant towed electrical cable according to claim 1 or 2, characterised in that: The central part of the plurality of insulated core conductors is provided with aramid ropes (8).

4. A roller compaction resistant towed electrical cable according to claim 1 or 2, characterised in that: The insulated core conductor (1) is a copper conductor.

5. A roller compaction resistant towed electrical cable according to claim 1 or 2, characterised in that: The pressure-resistant layer (3) is polyurethane sponge.

6. A roller compaction resistant towed electrical cable according to claim 1 or 2, characterised in that: The pressure-resistant layer (3) and the inner sheath (4) are connected through an adhesive.

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