Electric cable for coal mining machine

Abstract

The invention relates to a coal machine cable, which is formed by three copper conductive wire cores (4); insulate layer, control wire core (1) and rubber muffle, wherein the control wire core (1) is covered by insulated layer while the middle is polyester band; the control wire core (1) uses composite structure, whose center is beamed and screwed into screw copper conductor; the outer layer is high-carbon steel weave layer (2), and packed with ethylen-propylene rubber insulated layer (3); the control wire core (1) and three copper wire cores (4) form cable core; said cable core is packed with muffle (10); since it uses high-carbon steel weave layer, the anti-bend ability and anti-drawing ability of control wire core are improved, to avoid breakage.

Description

field of invention

[0001] The invention relates to a coal shearer cable, in particular to a coal shearer cable with an improved control wire core structure. technical background

[0002] Shearer cables used in coal mines are generally composed of copper conductive cores, insulating layers, control cores and neoprene sheaths. Copper conductive cores are directly extruded on copper conductive cores with insulating layers Polyester tape isolates. Since the equipment carried by the ordinary electric traction shearer can only monitor the operating status of the shearer itself, but cannot transmit the data signals collected on the working face, therefore, it is necessary to add a control core to the cable. Generally, the conductor cross section of the control wire core is relatively small, mostly 6mm 2 or below, when working, in the case of frequent bending of the cable, the conductor of the control wire core is easily broken and scrapped under the action of stretching and bendi...

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