CN203858904U - Tensile cable for thin coal seam coal mining machine - Google Patents

Abstract

The utility model provides a tensile cable for a thin coal seam coal mining machine. The tensile cable comprises three power wire cores, three grounding wire cores, an insulating layer and a sheath. The tensile cable is characterized in that 0.2mm and 0.3mm monofilaments are employed by a cable conductor, each strand in the conductor is reinforced by high strength fiber, strands are twisted repeatedly to form a conductor, the power wire cores are extruded by the insulating layer, the grounding wire cores are extruded by a semi-conductive layer, an insulating wire core is wrapped by a semi-conductive nylon belt, the power wire cores and the grounding wire cores are symmetrical to form a cable, a filler is arranged at the center of a cable core, and the cable core is extruded by the sheath with high strength wear resistance and weather resistance. The tensile cable for the thin coal seam coal mining machine can satisfy the requirements of small outer diameter, good cable tensile performance and good resistance performance of a thin coal seam coal mining machine cable and can satisfy the requirement of the harsh laying environment of the thin coal seam coal mining machine cable, the cost is low, and the construction is easy.

Description

A kind of low seam mining machinery tensile type cable

Technical field

The utility model relates to electric cable for coal mining machine, is a kind of low seam mining machinery tensile type cable more specifically.

Background technology

At present, at colliery down-hole coal excavation fully mechanized coal face, the large-scale coal-winning machine popularity rate of high seam is very high, and electric cable for coal mining machine application in 1.9/3.3kV heavy in section is wider.But colliery girdle is also more, 1.5m and following girdle can only use small-sized coal excavation apparatus, adopt space of planes narrower; the cable using can not be placed in protection carrier bar; directly dilatory use, requires the outside diameter of cable less, and cable tensile property, anti-durability performance are good. ?

Summary of the invention

The purpose of this utility model is that to overcome existing electric cable for coal mining machine external diameter large, weight is large, does not possess pull resistance, under the prerequisite that does not substantially increase cost and to reach the outside diameter of cable less, cable tensile property, the requirement that anti-durability performance is good, provide a kind of low seam mining machinery tensile type cable.

The utility model is realized in the following way: a kind of low seam mining machinery tensile type cable, comprise three power cores and three ground cores, insulating barrier and sheath, it is characterized in that cable conductor adopts 0.2mm, 0.3mm monofilament, in the each strand of conductor, strengthen with high strength fibre, strand is twisted into conductor again, power core extruded insulation layer, ground core extrudes the outer wrapped semiconductive of semi-conductive layer insulated wire cores and leads nylon tape, power core is symmetrically cable with ground core, cable core center is placed and is filled, and cable core extrudes high-strength abrasion-proof, weather-proof sheath outward.

The beneficial effects of the utility model are: a kind of low seam mining machinery tensile type cable, can meet the low seam mining machinery outside diameter of cable less, cable tensile property, the requirement that anti-durability performance is good, and can meet the requirement of low seam mining machinery cable laying adverse circumstances, and cost lower, be easy to construction.

Brief description of the drawings

Below in conjunction with accompanying drawing, the utility model is further illustrated.

Fig. 1 is cross sectional representation of the present utility model.

In figure, 1. power line core conductor, 2. ground wire core conductor, 3. insulation, 4. aramid fiber is strengthened yarn, and 5. semi-conductive layer is 6. filled 7. sheath.

Embodiment

Product type specification is as shown in Figure 1 a kind of low seam mining machinery tensile type cable of MCP-0.66/1.14 3 × 70+3 × 25/3, comprise that tinned copper wire is wound around aramid yarn and strengthens 4 one-tenth strands of yarn, strand is twisted into power line core conductor 1 and ground wire core conductor 2 again, power line core conductor extruded insulation 3, ground wire core conductor extrudes semiconductive layer 5, insulated wire cores is symmetrically cable with ground core, center-filled 6, and cable core extrudes sheath 7 outward.

When manufacture, copper bar is through repeatedly drawing of wire drawing machine, annealing, zinc-plated, to become nominal diameter be 0.3mm tinned copper wire, tinned copper wire on high-speed filament winder very fine pith strengthen yarn 4 around aramid yarn and be wound in strand, strand is fine pith, regular stranded on 18 dish cage stranding machines, be twisted into again power line core conductor 1 and ground wire core conductor 2, then conductor power line extruded insulation 3 in continuous vulcanization rubber extruding machine group, ground wire core conductor extrudes semiconductive layer 5, has so just made insulated wire cores and ground core.The outer wrapped semiconductive nylon tape of insulated wire cores, insulated wire cores and ground core are with the symmetrical stranding of fine pith on 1+6 cabler, and center-filled 6, extrudes sheath 7 in the external continuous vulcanization rubber extruding machine of cable core group, and at jacket surface spray printing identification marking, has manufactured.

Claims (3)

1. a low seam mining machinery tensile type cable, comprise three power cores and three ground cores, insulating barrier and sheath, it is characterized in that cable conductor adopts 0.2mm, 0.3mm monofilament, in the each strand of conductor, strengthen with high strength fibre, strand is twisted into conductor again, power core extruded insulation layer, ground core extrudes the outer wrapped semiconductive of semi-conductive layer insulated wire cores and leads nylon tape, power core is symmetrically cable with ground core, cable core center is placed and is filled, and cable core extrudes high-strength abrasion-proof, weather-proof sheath outward.

2. a kind of low seam mining machinery tensile type cable as claimed in claim 1, is characterized in that conductor strand adopts 0.2mm, 0.3mm monofilament, and stranded is canoe, and SMIS is high-intensity aramid yarn, and strand has retractility.

3. a kind of low seam mining machinery tensile type cable as claimed in claim 1, is characterized in that power core and ground core are symmetrically cable.