A long-life mining cable

Abstract

The utility model relates to a long -life mining cable belongs to mining cable technical field, this long -life mining cable, include: conductor, prevent breaking mechanism, the prevent breaking mechanism includes fixedly connected on the surface of the conductor fixed sleeve and connecting sleeve, the surface fixedly connected with insulating sleeve of fixed sleeve, the surface fixedly connected with shielding sleeve of insulating sleeve, through fixed sleeve, connecting sleeve, insulating sleeve, shielding sleeve and sheath mutual cooperation, and then strengthened the overall flexibility and strength of mining cable, compared with the poor flexibility of existing metal armored cable is easy to break in pulling, this mode mining cable flexibility is good, avoided the risk of breakage in pulling, and then improved the service life of mining cable, through sheath, shielding sleeve and insulating sleeve mutual cooperation, strengthened the wear resistance, corrosion resistance and anti - electromagnetic property of mining cable, guaranteed the stability of mining cable signal transmission.

Description

Technical Field

[0001] This utility model relates to the field of mining cable technology, and in particular to a long-life mining cable. Background Technology

[0002] Mining cables are important equipment used for power and signal transmission in mining fields such as coal mines and metal mines. They can work stably for a long time in complex and harsh mining conditions. Compared with ordinary cables, they have a longer service life, which can reduce the frequency of cable replacement and reduce mining operating costs.

[0003] Currently, most cables used in underground mobile substations on the market are metal-armored cables. Although metal-armored cables have high mechanical strength, they are heavy and have poor flexibility, making them prone to breakage when pulled, which reduces the service life of mining cables. Utility Model Content

[0004] Therefore, it is necessary to provide a long-life mining cable to address the problem that metal armored cables are heavy, have poor flexibility, and are prone to breakage when pulled.

[0005] Includes: a conductor; an anti-breakage mechanism, the anti-breakage mechanism including a fixed sleeve and a connecting sleeve fixedly connected to the surface of the conductor, an insulating sleeve fixedly connected to the surface of the fixed sleeve, a shielding sleeve fixedly connected to the surface of the insulating sleeve, and a protective sleeve fixedly connected to the surface of the shielding sleeve.

[0006] In one embodiment, a ring of reinforcing rods is fixedly connected to the surface of the conductor, and the surfaces of the reinforcing rods are fixedly connected to the inner wall of the fixing sleeve. The reinforcing rods improve the overall strength of the conductor, thereby ensuring its overall tensile strength and preventing the conductor from breaking under tension.

[0007] In one embodiment, a reinforcing layer is fixedly connected to the surface of the insulating sleeve, and the surface of the reinforcing layer is spiral-shaped.

[0008] In one embodiment, the surface of the shielding sleeve is fixedly connected with an annularly distributed elastic block, and the surface of the elastic block is fixedly connected to the inner wall of the sleeve.

[0009] In one embodiment, the surface of the shielding sleeve is fixedly connected with equally spaced connecting rings, the surfaces of which are respectively fixedly connected to the elastic block and the inner wall of the sheath.

[0010] In one embodiment, the sheath, elastic block, and connecting ring are all polyurethane rubber components, and the fixing sleeve, connecting sleeve, and reinforcing rod are all cross-linked polyethylene components.

[0011] In one embodiment, the reinforcing layer is an aramid fiber component, and the shielding sleeve is a copper strip component.

[0012] Beneficial effects

[0013] 1. By using a combination of a fixed sleeve, connecting sleeve, insulating sleeve, shielding sleeve, and sheath, the overall flexibility and strength of the mining cable are enhanced. Compared with existing metal armored cables, which have poor flexibility and are prone to breakage under tension, this method provides mining cables with good flexibility, avoiding the risk of breakage under tension and thus improving the service life of the mining cable. The combination of the sheath, shielding sleeve, and insulating sleeve also enhances the wear resistance, corrosion resistance, and electromagnetic insulation of the mining cable, ensuring the stability of signal transmission.

[0014] 2. Through the cooperation of the connecting ring, elastic block and reinforcing layer, the conductor, insulation sleeve, shielding sleeve and sheath are tightly combined, thereby improving the overall mechanical strength of the mining cable, improving the overall tensile performance of the mining cable, and avoiding the risk of breakage of the mining cable during pulling. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the sheath of this utility model;

[0018] Figure 3 This is an exploded view of the insulating sleeve and shielding sleeve of this utility model;

[0019] Figure 4 This is an exploded view of the insulating sleeve and reinforcing layer of this utility model.

[0020] Figure label:

[0021] 100. Conductor; 200. Anti-breakage mechanism; 201. Fixing sleeve; 202. Connecting sleeve; 203. Insulating sleeve; 204. Shielding sleeve; 205. Sheath; 206. Reinforcing rod; 207. Elastic block; 208. Connecting ring; 209. Reinforcing layer. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0027] The following is combined Figures 1-4 This utility model describes a high-life mining cable.

[0028] In one embodiment, a long-life mining cable includes: a conductor 100; an anti-breakage mechanism 200, the anti-breakage mechanism 200 including a fixing sleeve 201 and a connecting sleeve 202 fixedly connected to the surface of the conductor 100, an insulating sleeve 203 fixedly connected to the surface of the fixing sleeve 201, a shielding sleeve 204 fixedly connected to the surface of the insulating sleeve 203, and a sheath 205 fixedly connected to the surface of the shielding sleeve 204.

[0029] Conductor 100 is stranded with 7 strands of copper wire at 120 rpm using a tubular stranding machine, forming high-purity oxygen-free copper wire in a concentric stranding manner, with a stranding pitch of 12 times the outer diameter of the strand. Fixed sleeve 201, connecting sleeve 202 and insulating sleeve 203 are uniformly coated with XLPE material on the surface of conductor 100 at 180℃ and 1.2MPa pressure using a Φ45mm extruder. Shielding sleeve 204 is first wrapped with copper strip at 15m / min using a wrapping machine, and then the copper wire is braided using a 24-spindle braiding machine. The inner layer is formed by spirally wrapping 0.1mm thick copper strip with a 30% overlap rate, and the outer layer is woven with 0.15mm diameter tinned copper wire with an 85% coverage rate. Sheath 205, elastic block 207 and connecting ring 208 are all extruded with polyurethane rubber material at 195℃ and 1.5MPa pressure using a Φ65mm twin-screw extruder.

[0030] Conductor 100 is a C10200 oxygen-free copper component. Fixed sleeve 201, connecting sleeve 202 and insulating sleeve 203 are all made of XLPE-35kV grade cross-linked polyethylene components. Shielding sleeve 204 is made of T2 purple copper strip component with a hardness of H62. Braided copper wire is made of tin-plated copper wire with a Sn content of 1%. Sheath 205 is made of polyurethane rubber TPU-95A component. Reinforcing layer 209 is made of Kevlar49 aramid fiber component.

[0031] When current is transmitted through the multi-stranded conductor 100, the stranded structure can disperse stress; the XLPE insulation layer maintains stable dielectric properties even when working at 90℃ for a long time; the copper tape shielding sleeve 204 attenuates low-frequency interference through electromagnetic induction effect, and the braided shielding sleeve 204 suppresses high-frequency interference through skin effect; the polyurethane rubber TPU-95A component sheath 205 absorbs energy through molecular chain slippage when subjected to mechanical impact.

[0032] In this embodiment, the underground mobile substation needs to move its position according to the advancement of the mining face to ensure reliable power supply to the mining equipment. During the movement, the mining cable is easily subjected to various external forces. The conductor 100 of the C10200 oxygen-free copper component, the fixing sleeve 201, connecting sleeve 202 and insulating sleeve 203 of the XLPE-35kV cross-linked polyethylene component, the shielding sleeve 204 of the T2 purple copper strip component and the sheath 205 of the polyurethane rubber TPU-95A component enhance the wear resistance, corrosion resistance, electromagnetic interference resistance and tensile strength of the mining cable. This reduces damage to the mining cable when it rubs against the ground or equipment. In the humid and corrosive environment of the coal mine, the mining cable is not prone to aging. The mining cable can work stably for a long time in high-temperature environments, ensuring stable signal transmission. The mining cable is not prone to breakage during pulling.

[0033] like Figure 3 As shown, a ring of reinforcing rods 206 are fixedly connected to the surface of conductor 100. The surface of the reinforcing rods 206 is fixedly connected to the inner wall of the fixing sleeve 201. A reinforcing layer 209 is fixedly connected to the surface of insulating sleeve 203. The surface of the reinforcing layer 209 is spiral-shaped. A ring of elastic blocks 207 are fixedly connected to the surface of shielding sleeve 204. The surface of the elastic blocks 207 is fixedly connected to the inner wall of sheath 205. A series of connecting rings 208 are fixedly connected to the surface of shielding sleeve 204. The surfaces of the connecting rings 208 are fixedly connected to the inner walls of the elastic blocks 207 and sheath 205, respectively. Sheath 205, elastic blocks 207 and connecting rings 208 are all polyurethane rubber components. Fixing sleeve 201, connecting sleeve 202 and reinforcing rods 206 are all cross-linked polyethylene components. Reinforcing layer 209 is an aramid fiber component. Shielding sleeve 204 is a copper strip component.

[0034] The reinforcing layer 209 consists of 24 bundles of aramid fibers evenly distributed in a spiral shape between the insulating sleeve 203 and the shielding sleeve 204. When subjected to axial force, the aramid fiber reinforcing layer 209 resists tensile deformation through fiber orientation.

[0035] Working principle: During movement, mining cables are easily subjected to various external forces. The elastic block 207, connecting ring 208, reinforcing rod 206, and reinforcing layer 209 strengthen the tight fit between the shielding sleeve 204, sheath 205, insulating sleeve 203, fixing sleeve 201, conductor 100, and connecting sleeve 202, thereby enhancing the wear resistance, corrosion resistance, electromagnetic interference resistance, and tensile strength of the mining cable. This reduces damage to the mining cable during friction with the ground or equipment. In the humid and corrosive environment of coal mines, the mining cable is less prone to aging. It can also operate stably for a long time in high-temperature environments, ensuring stable signal transmission and preventing breakage during tensile stress.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A long-life mining cable, characterized in that, include: Conductor (100); The anti-breakage mechanism (200) includes a fixed sleeve (201) and a connecting sleeve (202) fixedly connected to the surface of the conductor (100). An insulating sleeve (203) is fixedly connected to the surface of the fixed sleeve (201), a shielding sleeve (204) is fixedly connected to the surface of the insulating sleeve (203), and a protective sleeve (205) is fixedly connected to the surface of the shielding sleeve (204).

2. The long-life mining cable according to claim 1, characterized in that The surface of the conductor (100) is fixedly connected to a ring of reinforcing rods (206), and the surface of the reinforcing rods (206) is fixedly connected to the inner wall of the fixing sleeve (201).

3. The long-life mining cable according to claim 1, characterized in that, The surface of the insulating sleeve (203) is fixedly connected to a reinforcing layer (209), and the surface of the reinforcing layer (209) is spiral.

4. The long-life mining cable according to claim 1, characterized in that, The surface of the shielding sleeve (204) is fixedly connected with annularly distributed elastic blocks (207), and the surface of the elastic blocks (207) is fixedly connected to the inner wall of the sheath (205).

5. The long-life mining cable according to claim 4, characterized in that, The surface of the shielding sleeve (204) is fixedly connected with equally arranged connecting rings (208), and the surfaces of the connecting rings (208) are respectively fixedly connected to the inner walls of the elastic block (207) and the sheath (205).

6. The long-life mining cable according to claim 1, characterized in that, The sheath (205), elastic block (207) and connecting ring (208) are all polyurethane rubber components, and the fixing sleeve (201), connecting sleeve (202) and reinforcing rod (206) are all cross-linked polyethylene components.

7. The long-life mining cable according to claim 3, characterized in that, The reinforcing layer (209) is an aramid fiber component, and the shielding sleeve (204) is a copper strip component.

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