A shielded braided reinforced flexible rubber cable for a coal mining machine

Abstract

The utility model relates to a kind of shielded braided reinforced rubber jacketed flexible cable of coal mining machine, it includes three power cables and a control cable with same outer diameter and rectangular array arrangement, ground cable is provided between the control cable and three power cables;The control cable includes four control wire cores with rectangular array arrangement and control wire core coating layer being arranged outside four control wire cores, first gap filling adhesive tape is provided between adjacent two control wire cores and control wire core coating layer, tensile wire is provided in the first gap filling adhesive tape;Control cable and three power cable outside are sequentially provided with inner sheath, braided reinforcing layer and outer sheath from inside to outside, second gap filling adhesive tape is provided between adjacent two power cables and inner sheath and between inner sheath and adjacent power cable and control cable, tensile wire is provided in the second gap filling adhesive tape.

Description

Technical Field

[0001] This utility model relates to the field of mining cable technology, specifically to a shielded braided reinforced rubber-sheathed flexible cable for coal mining machines. Background Technology

[0002] Because coal mining machines need to move constantly during mining operations, and the distance between the machine and the power control cabinet is considerable, long cables are required for connection. During operation, these cables move continuously with the machine, subjecting them to constant friction and tension. Therefore, the cables need to possess sufficient tensile strength to prevent damage to the internal conductors. Furthermore, mining cables experience frequent movement and bending during use, and their flexibility and roundness significantly impact their performance, lifespan, and ease of installation. Therefore, it is necessary to design a shielded, braided, reinforced rubber-sheathed flexible cable for coal mining machines that boasts high tensile strength and a smooth, rounded appearance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a shielded braided reinforced rubber-sheathed flexible cable for coal mining machines with good tensile strength and a round appearance.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0005] A shielded braided reinforced rubber-sheathed flexible cable for a coal mining machine includes three power cables and one control cable with the same outer diameter arranged in a rectangular array, and a ground cable is provided between the control cable and the three power cables.

[0006] The control cable includes four control cores arranged in a rectangular array and a control core sheath layer disposed outside the four control cores. A first edge gap filling strip is disposed between two adjacent control cores and the control core sheath layer, and anti-tensile fibers are disposed inside the first edge gap filling strip.

[0007] The control cable and the three power cables are provided with an inner sheath, a braided reinforcement layer and an outer sheath from the inside out. A second edge gap filling strip is provided between two adjacent power cables and the inner sheath, and between the inner sheath and the adjacent power cable and control cable. The second edge gap filling strip is provided with tensile filaments.

[0008] In one embodiment of this utility model, the power cable includes a power conductor core, a power insulation layer, and a power shielding layer arranged sequentially from the inside out.

[0009] In one embodiment of this utility model, the power core shielding layer is a metal wire braided layer or a fiber filament braided layer.

[0010] In one embodiment of this utility model, the grounding cable includes a grounding core conductor and a semiconductive layer covering the outside of it.

[0011] In one embodiment of this utility model, the ground wire core conductor is made of multi-strand braided wire.

[0012] In one embodiment of this utility model, the tensile-resistant filament is woven from a multi-strand wire harness.

[0013] In one embodiment of this utility model, the tensile-resistant wire bundle is made of high-strength aramid fiber.

[0014] In one embodiment of this utility model, the control core includes a control core conductor and a control core insulation layer covering the outside therefrom.

[0015] In one embodiment of this utility model, both the power conductor and the control conductor are made of multi-strand braided wires, and each wire bundle includes multiple braided strands.

[0016] In one embodiment of this utility model, the inner sheath is made of ethylene propylene rubber or chlorinated polyethylene; the outer sheath is made of chloroprene rubber or chlorinated polyethylene; and the braided reinforcing layer is made of galvanized steel wire or aramid fiber.

[0017] The beneficial effects of adopting the above technical solution are as follows:

[0018] The shielded braided reinforced rubber-sheathed flexible cable for coal mining machines provided by this utility model can ensure the consistency of the outer diameter of the control cable with that of the power cable by setting a first edge gap filling strip between the control cores of the control cable. Furthermore, setting a second edge gap filling strip between adjacent power cables and between adjacent power cables and control cables can improve the roundness of the outer sheath, thereby improving the cable's performance, lifespan, and ease of installation.

[0019] Incorporating tensile-resistant filaments within the first and second gap-filling strips effectively enhances the cable's tensile strength. The power conductor, control conductor, and ground conductor are all braided from multiple strands, significantly improving the cable's overall tensile strength. Furthermore, the addition of a braided reinforcement layer further enhances the cable's overall tensile strength.

[0020] In addition, the tensile strength is set inside the first and second side gap filling strips, which improves the tensile strength of the cable without increasing the cross-section of the cable, ensuring the minimum outer diameter of the cable and improving the overall flexibility of the cable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is another structural schematic diagram of the present invention.

[0023] The components are: 1. Power conductor, 2. Power insulation layer, 3. Power shielding layer, 4. Control conductor, 5. Control insulation layer, 6. First gap filling strip, 7. Control sheath, 8. Ground conductor, 9. Semiconductor layer, 10. Second gap filling strip, 11. Tensile wire, 12. Inner sheath, 13. Braided reinforcement layer, and 14. Outer sheath. Detailed Implementation

[0024] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0025] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0026] like Figure 1 The diagram shows a shielded braided reinforced rubber-sheathed flexible cable for a coal mining machine, which includes three power cables and one control cable with the same outer diameter arranged in a rectangular array. A ground cable is provided between the control cable and the three power cables.

[0027] The control cable includes four control cores arranged in a rectangular array and a control core sheath 7 disposed outside the four control cores. A first edge filling strip 6 is disposed between two adjacent control cores and the control core sheath 7. The first edge filling strip 6 contains tensile-resistant fibers 11. The first edge filling strip 6 has a circular cross-section, or the cross-section is designed according to the area between two adjacent control cores and the control core sheath 7, and is composed of three arcs.

[0028] The control cable and the three power cables are sequentially fitted with an inner sheath 12, a braided reinforcing layer 13, and an outer sheath 14 from the inside out. A second gap-filling strip 10 is provided between adjacent power cables and the inner sheath 12, and between the inner sheath 12 and adjacent power cables and control cables. The second gap-filling strip 10 contains tensile-resistant filaments 11. The second gap-filling strip 10 has a circular cross-section. Figure 2 Alternatively, the cross-section is designed based on the area between two adjacent power cables and the control core sheath 7, and the area between adjacent power cables and control cables and the control core sheath 7, consisting of three arcs, as shown in the reference. Figure 1 .

[0029] By setting a first gap-filling strip 6 between the control cores of the control cable, the consistency between the outer diameter of the control cable and the outer diameter of the power cable can be ensured. Setting a second gap-filling strip 10 between adjacent power cables and between adjacent power cables and control cables helps to improve the roundness of the outer sheath 14, and improve the performance, lifespan and installation convenience of the cable.

[0030] The installation of tensile-resistant filaments 11 within the first and second gap-filling strips 6 and 10 effectively improves the tensile strength of the cable. The placement of the tensile-resistant filaments 11 within the first and second gap-filling strips 6 and 10 enhances the cable's tensile strength without increasing its cross-sectional area, thus ensuring the cable's minimum outer diameter and improving its overall flexibility.

[0031] In this embodiment, the power cable includes a power conductor 1, a power insulation layer 2, and a power shielding layer 3 arranged sequentially from the inside out. The power shielding layer 3 is a metal wire braided layer or a fiber braided layer.

[0032] The grounding cable includes a ground conductor core 8 and a semi-conductive layer 9 covering it. The ground conductor core 8 is made of multi-strand braided wire. The cross-section of the semi-conductive layer 9 is designed according to the area between three power cables and one control cable.

[0033] The tensile filament 11 is woven from multiple strands of yarn. The yarn bundle of the tensile filament 11 is made of high-strength aramid fiber.

[0034] The control core includes a control core conductor 4 and a control core insulation layer 5 covering the outside of it. Both the power core conductor 1 and the control core conductor 4 are made of multi-strand braided wires, and each wire bundle includes multiple braided wires.

[0035] The inner sheath 12 is made of ethylene propylene rubber or chlorinated polyethylene; the outer sheath 14 is made of neoprene rubber or chlorinated polyethylene; and the braided reinforcing layer 13 is made of galvanized steel wire or aramid fiber.

[0036] The power conductor 1, control conductor 4, and ground conductor 8 are all made of multi-strand braided wires, which greatly improves the overall tensile strength of the cable. By setting the braided reinforcement layer 13, the overall tensile strength of the cable is further improved.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shielded braided reinforced rubber-sheathed flexible cable for coal mining machines, characterized in that: It includes three power cables with the same outer diameter arranged in a rectangular array and one control cable, with a ground cable provided between the control cable and the three power cables; The control cable includes four control cores arranged in a rectangular array and a control core covering layer (7) disposed outside the four control cores. A first edge gap filling strip (6) is disposed between two adjacent control cores and the control core covering layer (7). An anti-tear fiber (11) is disposed inside the first edge gap filling strip (6). The control cable and the three power cables are provided with an inner sheath (12), a braided reinforcement layer (13) and an outer sheath (14) from the inside out. A second gap filling strip (10) is provided between two adjacent power cables and the inner sheath (12) and between the inner sheath (12) and the adjacent power cable and control cable. The second gap filling strip (10) is provided with tensile filaments (11).

2. The shielded braided reinforced rubber-sheathed flexible cable for coal mining machines according to claim 1, characterized in that: The power cable includes a power conductor (1), a power insulation layer (2), and a power shield (3) arranged sequentially from the inside to the outside.

3. The shielded braided reinforced rubber-sheathed flexible cable for coal mining machines according to claim 2, characterized in that: The power core shielding layer (3) is a metal wire braided layer or a fiber braided layer.

4. The shielded braided reinforced rubber-sheathed flexible cable for coal mining machines according to claim 3, characterized in that: The grounding cable includes a grounding core conductor (8) and a semiconductive layer (9) covering the outside of it.

5. The shielded braided reinforced rubber-sheathed flexible cable for a coal mining machine according to claim 4, characterized in that: The ground conductor (8) is made of a multi-strand braid.

6. The shielded braided reinforced rubber-sheathed flexible cable for coal mining machines according to claim 1, characterized in that: The tensile filament (11) is made of multi-strand braided wire.

7. A shielded braided reinforced rubber-sheathed flexible cable for a coal mining machine according to claim 6, characterized in that: The tensile filament (11) is made of high-strength aramid fiber.

8. A shielded braided reinforced rubber-sheathed flexible cable for a coal mining machine according to claim 2, characterized in that: The control core includes a control core conductor (4) and a control core insulation layer (5) covering the outside of it.

9. A shielded braided reinforced rubber-sheathed flexible cable for a coal mining machine according to claim 8, characterized in that: Both the power conductor (1) and the control conductor (4) are made of multiple strands of wire braided together, with each strand of wire including multiple strands braided together.

10. A shielded braided reinforced rubber-sheathed flexible cable for a coal mining machine according to claim 1, characterized in that: The inner sheath (12) is made of ethylene propylene rubber or chlorinated polyethylene; the outer sheath (14) is made of chloroprene rubber or chlorinated polyethylene; and the braided reinforcing layer (13) is made of galvanized steel wire or aramid fiber.

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