Composite type control cable for coal cutter

Abstract

The invention discloses a composite type control cable for a coal cutter. The cable comprises a cable core composed of three power wire cores, a ground wire core and eight signal wire cores; each signal wire core is wrapped with a signal insulation layer; every two signal wire cores form one group of signal wire cores; each group of signal wire cores is wrapped with a signal shielding layer; the four groups of signal wire cores are arranged to form a rectangle; the signal shielding layers are jointly wrapped with a wrapping tape layer; the ground wire core is located at the center of the cable core; the power wire cores and the signal wire cores surround the ground wire core; a power insulation layer, a power shielding layer and a wrapping tape layer which are sequentially wrapped with one another from inside to the outside are located in each power wire core; gaps between the wrapping tape layer and the ground wire core are filled with a filling layer made of an explosion-proof material; and the wrapping tape layer and the filling layer are jointly wrapped with an inner sheath layer, a reinforcing layer and an outer sheath layer sequentially. The composite type control cable of the present invention has the advantages of excellent heat resistance, excellent physical and mechanical properties, high electrical insulation performance, good product usability and long service life.

Description

technical field [0001] The invention relates to the technical field of cables for coal mining machines in coal mines, in particular to a composite control cable for coal mining machines. Background technique [0002] With the development of science and technology, high-quality, high-tech high-strength materials have been developed, coupled with the current situation of global economic development, the demand for coal is also increasing, resulting in the use of mining shearer cables. As the country grows bigger, the country pays more and more attention to the safe use of mining cables, requiring the ground control center to be able to grasp the operation of the working face in a timely manner, that is, to transmit the working condition parameters of the coal mining equipment to the control system. Cables for coal mining machines are generally composed of power transmission cores and control signal transmission cores. At the same time, with the continuous deepening of coal min...

AI Technical Summary

Problems solved by technology

Due to the frequent bending of the cables used for coal shearers during use, it is easy to cause the control wire core to break, which makes the cables unable to operate normally and seriously affects the service life of the cables

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