CN217880885U - Tensile bending-resistant cable for coal mining machine - Google Patents

Abstract

The utility model discloses a resistant crooked coal-winning machine of tensile type cable belongs to cable technical field, including the cable body, the cable body includes the butadiene acrylonitrile rubber wearing layer, the inside of butadiene acrylonitrile rubber wearing layer is provided with the fire-retardant layer of polyvinyl chloride, the inboard a week composite connection of the fire-retardant layer of polyvinyl chloride has ethylene film dampproof course, the inside intermediate position of ethylene film dampproof course is provided with the strengthening rib, the inside annular partition of ethylene film dampproof course is provided with four cable cores, the inside packing of ethylene film dampproof course has cable filling rope. The beneficial effects of the utility model are that can reduce the deformation degree of conductor copper wire, improve the resistant bending property of conductor copper wire, improve cable life, can promote cable tensile strength simultaneously, reduce its fracture possibility, improve the security that the cable used.

Description

Tensile bending-resistant cable for coal mining machine

Technical Field

The utility model relates to the technical field of cables, specifically say a resistant crooked cable for coal-winning machine of tensile type.

Background

The coal mining machine is one of important equipment for realizing mechanization and modernization of coal mine production, the mechanical coal mining can reduce physical labor, improve safety and achieve the purposes of high yield, high efficiency and low consumption, and due to the fact that the coal mine collection working environment is severe, if a cable of the coal mining machine breaks down, the whole coal mining work is interrupted, and huge economic loss is caused.

The utility model with the Chinese patent application number of CN201220075972.3 discloses a protective layer for a cable sheath layer of a coal mining machine, which is a thermoplastic material extruded and wrapped outside the cable sheath layer of the coal mining machine, and the thermoplastic material has the advantages of friction resistance, corrosion resistance, tearing resistance, extrusion resistance, impact resistance, aging resistance, good thermal stability, flame retardance and environmental protection.

The above comparison document has the following problems:

(1) The cable of the coal mining machine is in a severe use environment, S-shaped bending is often required, and a copper wire used as a conductor material can be fatigued and finally broken under continuous bending.

(2) The coal mining machine cable is often stretched in the use process, so that the cable is integrally fatigued, a cable sleeve is broken, copper wires are exposed, and potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a resistant crooked for coal-winning machine cable of tensile type to solve the problem that proposes in the above-mentioned background art.

The technical scheme of the utility model is that: the utility model provides a resistant crooked cable for coal-winning machine of tensile type, includes the cable body, the cable body includes the butadiene acrylonitrile rubber wearing layer, the inside of butadiene acrylonitrile rubber wearing layer is provided with the fire-retardant layer of polyvinyl chloride, the inboard a week multiple connection in fire-retardant layer of polyvinyl chloride has ethylene film dampproof course, the inside intermediate position of ethylene film dampproof course is provided with the strengthening rib, the inside annular partition of ethylene film dampproof course is provided with four cable cores, the inside packing of ethylene film dampproof course has cable filling rope.

Furthermore, a plurality of butyl rubber columns are connected in an equally-divided and composite mode around the inner part of the nitrile rubber wear layer, and the bottom ends of the butyl rubber columns are connected with the polyvinyl chloride flame-retardant layer in a composite mode.

Furthermore, a cavity is formed in the nitrile rubber wear-resistant layer, a tough copper wire woven mesh is filled in the cavity, and the tough copper wire woven mesh is latticed.

Further, the cable core includes the conductor, the outside cladding of conductor has the insulating layer, the outside of insulating layer is provided with the signal shielding layer, it has lubricating grease to fill in the clearance of insulating layer and signal shielding layer.

Further, the cable core is arranged in an S-shaped bending mode.

The utility model discloses an improve and provide a resistant crooked for coal-winning machine cable of tensile type here, compare with prior art, have following improvement and advantage:

one is as follows: the utility model discloses a lubricated oleamen and the cable core mating reaction that sets to the S-shaped reduce the conductor copper wire and the contained angle of effort direction of bending, reduce the deformation degree of conductor copper wire, improve the resistant bending property of conductor copper wire, improve cable life.

The second step is as follows: the utility model discloses a tough copper wire mesh grid and butyl rubber post mating reaction will act on the tensile effort of cable body and offset the weakening to promote cable tensile strength, reduce its fracture possibility, improve the security that the cable used.

Drawings

The invention is further explained below with reference to the figures and examples:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic front view of the cross-sectional structure of the present invention;

fig. 3 is a schematic view of the local side view profile structure of the present invention.

Description of reference numerals: 1. a cable body; 11. a nitrile rubber wear layer; 111. weaving a net by using tough copper wires; 12. a polyvinyl chloride flame retardant layer; 13. a vinyl film moisture barrier; 14. a cable core; 141. a conductor; 142. an insulating layer; 143. lubricating ointment; 144. a signal shielding layer; 15. reinforcing ribs; 16. butyl rubber column.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 3, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a resistant crooked coal-winning machine cable of tensile type through the improvement here, as shown in figure 1 and figure 3, including cable body 1, cable body 1 includes butadiene acrylonitrile rubber wearing layer 11, the inside of butadiene acrylonitrile rubber wearing layer 11 is provided with the cavity, and the cavity is inside to be filled with tough copper wire mesh grid 111, tough copper wire mesh grid 111 is latticed to utilize tough copper wire mesh grid 111 to share the tensile effort that butadiene acrylonitrile rubber wearing layer 11 received, change the tensile strength that promotes butadiene acrylonitrile rubber wearing layer 11 mutually, the inside of butadiene acrylonitrile rubber wearing layer 11 is provided with polyvinyl chloride flame retardant layer 12, encircle a plurality of butyl rubber posts 16 are connected to the inside week partition complex of butadiene acrylonitrile rubber wearing layer 11, a plurality of the bottom and the polyvinyl chloride flame retardant layer 12 complex of butyl rubber post 16 are connected, thereby when receiving the extension in cable body 1 outside, applying a tensile acting force on the butyl rubber columns 16, providing sufficient deformation space for the butyl rubber columns 16 by utilizing the gap space of the butyl rubber columns 16, dispersing the tensile acting force to each butyl rubber column 16, weakening the butyl rubber column 16 by utilizing the deformation of the butyl rubber column, reducing the tensile acting force applied to the polyvinyl chloride flame-retardant layer 12, enhancing the tensile property of the cable body 1, wherein an ethylene film moisture-proof layer 13 is compositely connected to the periphery of the inner side of the polyvinyl chloride flame-retardant layer 12, a reinforcing rib 15 is arranged at the middle position inside the ethylene film moisture-proof layer 13, four cable cores 14 are annularly and equally arranged inside the ethylene film moisture-proof layer 13, each cable core 14 comprises a conductor 141, an insulating layer 142 is coated outside the conductor 141, a signal shielding layer 144 is arranged outside the insulating layer 142, and a lubricating grease 143 is filled in the gap between the insulating layer 142 and the signal shielding layer 144, when the cable body 1 is bent, bending acting force is transmitted layer by layer, after the bending acting force is transmitted to the signal shielding layer 144, the signal shielding layer 144 deforms and extrudes the lubricating grease 143, the conductor 141 and the insulating layer 142 slide in the lubricating grease 143, and the bending acting force is transmitted to the insulating layer 142 until the insulating layer 142 is directly contacted with the signal shielding layer 144 and then acts on the conductor 141 to bend the conductor 141, so that the bending degree of the conductor 141 is effectively weakened, the bending resistance of the conductor is improved, the cable core 14 is bent in an S shape, an included angle between the conductor 141 and the bending direction is reduced when the cable core is bent, the deformation and bending degree of the conductor 141 after the acting force is reduced, and the cable filling rope is filled in the ethylene film moisture-proof layer 13.

The working principle is as follows: when the cable body 1 is subjected to a tensile acting force, the tensile acting force applied to the nitrile rubber wear-resistant layer 11 is distributed through the tough copper wire woven mesh 111, the tensile property of the nitrile rubber wear-resistant layer 11 is improved in a phase change manner, the tensile acting force applied to the nitrile rubber wear-resistant layer 11 acts on the butyl rubber columns 16, and a sufficient deformation space is provided for the butyl rubber columns 16 by utilizing gap spaces among the butyl rubber columns 16, so that the tensile acting force is dispersed to each butyl rubber column 16 and weakened by utilizing the deformation of the butyl rubber column 16, the tensile acting force applied to the polyvinyl chloride flame-retardant layer 12 is reduced, the tensile property of the cable body 1 is enhanced, when the cable body 1 is bent, the bending acting force is transmitted layer by layer, after being transmitted to the signal shielding layer 144, the signal shielding layer 144 is deformed and extrudes the lubricating cream 143, the conductor 141 and the insulating layer 142 slide inside the lubricating cream 143, until the insulating layer 142 is directly contacted with the signal shielding layer 144, the bending acting force is transmitted to the insulating layer 142, and then acts on the conductor 141 to bend the conductor 141, so that the bending acting force applied to the conductor 141 is effectively weakened, and meanwhile, the cable core 14 arranged in an S shape is utilized, and the included angle between the conductor 141 and the bending direction is reduced, and the bending acting force applied to reduce the bending degree of the bending acting force 141.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. The utility model provides a resistant crooked for coal-winning machine cable of tensile type which characterized in that: including cable body (1), cable body (1) includes nitrile rubber wearing layer (11), the inside of nitrile rubber wearing layer (11) is provided with fire-retardant layer of polyvinyl chloride (12), the inboard a week multiple connection of fire-retardant layer of polyvinyl chloride (12) has ethylene film dampproof course (13), the intermediate position of ethylene film dampproof course (13) inside is provided with strengthening rib (15), the inside annular partition of ethylene film dampproof course (13) is provided with four cable cores (14), the inside packing of ethylene film dampproof course (13) has the cable filling rope.

2. The tensile bend-resistant cable for a coal cutter according to claim 1, characterized in that: a plurality of butyl rubber columns (16) are connected in a compound mode in a circle and in equal division mode inside the nitrile rubber wear-resistant layer (11), and the bottom ends of the butyl rubber columns (16) are connected with the polyvinyl chloride flame-retardant layer (12) in a compound mode.

3. The tensile bend-resistant cable for a coal cutter according to claim 1, characterized in that: the interior of the nitrile rubber wear-resistant layer (11) is provided with a cavity, the cavity is filled with a tough copper wire woven mesh (111), and the tough copper wire woven mesh (111) is in a grid shape.

4. The tensile bend-resistant cable for a coal cutter according to claim 1, characterized in that: the cable core (14) comprises a conductor (141), an insulating layer (142) is coated outside the conductor (141), a signal shielding layer (144) is arranged outside the insulating layer (142), and a gap between the insulating layer (142) and the signal shielding layer (144) is filled with lubricating grease (143).

5. The tensile bend-resistant cable for a coal cutter according to claim 1, characterized in that: the cable core (14) is arranged in an S-shaped bending mode.

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