CN211062485U

CN211062485U - Core-breaking-preventing flexible cable for coal mine coal mining machine

Info

Publication number: CN211062485U
Application number: CN201921753660.1U
Authority: CN
Inventors: 徐季新; 黄建卫; 张天成; 王世军; 黄桂领
Original assignee: Zhejiang Zetastone Special Cable Co ltd
Current assignee: Zhejiang Zetastone Special Cable Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-07-21
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a colliery coal-winning machine is with preventing disconnected core flexible cable, including four insulation core's centre sets up a enhancement nylon rope and transposition jointly constitutes the cable core, the cable core outside has set gradually fluororesin around band, inner sheath, steel wire armor, glass fiber high temperature line around covering and oversheath, insulation core includes inner conductor and coextrusion cladding in the outside multilayer low smoke and zero halogen ternary ethylene propylene rubber insulating layer of inner conductor, the inner conductor comprises a plurality of tinned copper monofilaments and a plurality of aramid fiber skein transposition. The tensile strength of the whole cable is higher, the phenomenon that the cable is broken and the core is frequently broken is effectively prevented, and good flexibility and bending characteristics are considered.

Description

Core-breaking-preventing flexible cable for coal mine coal mining machine

Technical Field

The utility model relates to the technical field of cables, especially, relate to a colliery is broken core flexible cable is prevented with coal mining machine.

Background

At present, coal mine coal mining machine cables are all provided with multi-core control wire cores, core breakage of the wire cores of the cables frequently occurs in the using process, and once the core breakage occurs, the whole cable cannot be reused. In general enterprises, high-strength fluoroplastic is adopted for insulation in order to prevent core breaking, but the strength of the fluoroplastic insulation is high and reaches more than 16N, but the fluoroplastic insulation is easy to crack during bending and high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a colliery coal-winning machine is with preventing disconnected core flexible cable, and whole cable tensile strength is higher, effectually prevents that the disconnected core of cable from frequently appearing, compromises good pliability and bending property.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

The core breaking prevention flexible cable comprises four insulation wire cores, a reinforced nylon rope is arranged in the middle of the four insulation wire cores and is jointly twisted to form a cable core, a fluororesin wrapping tape, an inner sheath, a steel wire armor layer, a glass fiber high-temperature wire wrapping layer and an outer sheath are sequentially arranged outside the cable core, the insulation wire cores comprise inner conductors and a common extrusion coating layer, the inner conductors are externally provided with a plurality of layers of low-smoke zero-halogen ethylene propylene diene monomer insulation layers, and the inner conductors are formed by twisting a plurality of tinned copper monofilaments and a plurality of aramid fibers.

Preferably, a fluororesin insulation layer is provided on the outside of the reinforced nylon cord.

Preferably, the outer diameter of the reinforced nylon rope is 2.5mm to 3 mm.

Preferably, the fluororesin wrapping tape is wrapped outside the cable core in a clearance mode, and the winding distance is 2-4 times of the bandwidth.

Preferably, the tape width of the fluororesin wrapping tape is 1 to 5 times of the outer diameter of the cable core.

Preferably, the glass fiber high-temperature wire winding cladding is of a double-layer glass fiber high-temperature wire mutually reverse spiral winding weaving structure, and the spiral angles are different.

Preferably, the helix angle is 40 to 55 degrees.

Preferably, the inner sheath and the outer sheath are low-smoke halogen-free ethylene propylene diene monomer insulating sheaths.

The utility model has the advantages that:

1. the insulated wire core is made of high-strength ethylene propylene diene monomer rubber, the insulating property is excellent, the strength is over 10N, high-strength aramid fibers are added in the stranding process of the inner conductor, the strength is improved to over 40N, and 1 reinforcing nylon rope with the diameter of about 2.5mm is filled in the stranding process, so that the tensile breaking force is improved by over 2 times.

2. The multilayer low-smoke halogen-free ethylene propylene diene monomer insulating layer is adopted, the phenomenon that the thickness of the insulating layer is not uniform easily caused by single-layer extrusion coating can be avoided, the outer surface is smooth and uniform, the mechanical strength is improved, and the electric insulating property and the voltage resistance are excellent.

3. Through set up steel wire armor, glass fiber high temperature wire-wound covering between inner sheath and oversheath, help improving the anti mechanical impact force of whole cable to compromise and improved antistatic and interference killing feature, increase of service life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Reference numerals: 1-an insulating wire core, 2-a reinforced nylon rope, 3-a fluororesin wrapping tape, 4-an inner sheath, 5-a steel wire armor layer, 6-a glass fiber high-temperature wire wrapping layer, 7-an outer sheath, 8-an inner conductor, 9-a multilayer low-smoke halogen-free ethylene propylene diene monomer insulating layer and 10-a fluororesin insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a coal mine is anti-broken core flexible cable for coal mining machine, including four insulation core 1, insulation core 1 includes inner conductor 8 and coextrusion cladding in the outside multilayer low smoke and zero halogen EPDM rubber insulating layer 9 of inner conductor 8, inner conductor 8 comprises a plurality of tinned copper monofilament and a plurality of aramid fiber silk transposition.

A reinforced nylon rope 2 is arranged in the middle of the four insulated wire cores 1 and is twisted together to form a cable core, for example, the outer diameter of the reinforced nylon rope 2 is 2.5mm to 3 mm. Further, a fluororesin insulation layer 10 is provided on the outside of the reinforced nylon cord 2. The cable comprises a cable core and is characterized in that a fluororesin wrapping tape 3, an inner sheath 4, a steel wire armor layer 5, a glass fiber high-temperature wire wrapping layer 6 and an outer sheath 7 are sequentially arranged outside the cable core, specifically, the fluororesin wrapping tape 3 is wrapped outside the cable core at intervals, and the winding distance is 2-4 times of the bandwidth. The band width of the fluororesin wrapping tape 3 is 1 to 5 times of the outer diameter of the cable core. The glass fiber high-temperature wire winding cladding 6 is of a double-layer glass fiber high-temperature wire mutually reverse spiral winding weaving structure and has different spiral angles, preferably, the spiral angle is 40-55 degrees. The inner sheath 4 and the outer sheath 7 are preferably low-smoke halogen-free ethylene propylene diene monomer insulating sheaths.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. Colliery coal-winning machine is with preventing disconnected core flexible cable, characterized by: including four insulation core (1) set up one in the middle of four insulation core (1) and strengthen nylon rope (2) and strand jointly and constitute the cable core, the cable core outside has set gradually fluororesin around band (3), inner sheath (4), steel wire armor (5), glass fiber high temperature line around covering (6) and oversheath (7), insulation core (1) include inner conductor (8) and extrude the cladding jointly in the outside multilayer low smoke and zero halogen EPDM rubber insulating layer (9) of inner conductor (8), inner conductor (8) are twisted by a plurality of tinned copper monofilaments and a plurality of aramid fiber silk and are constituted.

2. The core breakage preventing flexible cable for the coal mine mining machine according to claim 1, characterized in that: and a fluororesin insulating layer (10) is arranged outside the reinforced nylon rope (2).

3. The core breakage preventing flexible cable for the coal mine mining machine according to claim 1, characterized in that: the outer diameter of the reinforced nylon rope (2) is 2.5mm to 3 mm.

4. The core breakage preventing flexible cable for the coal mine mining machine according to claim 1, characterized in that: the glass fiber high-temperature wire-wound cladding (6) is of a double-layer glass fiber high-temperature wire mutually reverse spiral winding weaving structure and has different spiral angles.

5. The core breakage preventing flexible cable for the coal mine mining machine according to claim 4, characterized in that: the helix angle is 40 to 55 degrees.

6. The core breakage preventing flexible cable for the coal mine mining machine according to claim 1, characterized in that: the inner sheath (4) and the outer sheath (7) are low-smoke halogen-free ethylene propylene diene monomer insulating sheaths.