Novel movable rubber jacketed flexible cable for coal mine frequency conversion device

Abstract

The invention provides a novel movable rubber jacketed flexible cable for a coal mine frequency conversion device, which relates to the technical field of movable rubber jacketed flexible cables for coal mines. The novel movable rubber jacketed flexible cable comprises a tensile outer sheath and an inner sheath located in the tensile outer sheath, the outer wall of the tensile outer sheath is provided with ceramic chips, the ceramic chips are assembled to improve the wear resistance of the cable, and a wrapping belt for protecting the inner sheath is arranged between the tensile outer sheath and the inner sheath. According to the novel movable rubber jacketed flexible cable for the coal mine frequency conversion device, the tensile outer sheath can be protected, the service life of the cable can be prolonged, the abrasion resistance of the cable is enhanced through the ceramic chips during use, the tensile outer sheath is prevented from being abraded, the inner circuit structure is protected, the tensile performance of the cable can be improved. The Kevlar fiber layer is made of a fiber composite material and has good deformability, so that the cable has very high fracture elongation, the situation that the tensile outer sheath fractures to cause exposure of an internal circuit and cause poor practical effect of the cable is avoided, and the inner sheath is protected by the wrapping belt, and the cushion and buffering effects are achieved.

Description

technical field [0001] The invention relates to the technical field of a flexible rubber-sheathed movable cable for a novel frequency conversion device in a coal mine, in particular to a flexible rubber-sheathed mobile cable for a novel frequency conversion device in a coal mine. Background technique [0002] The rubber-sheathed flexible cable MVFPT used in the inverter device of the coal mine, the long-term allowable working temperature of the cable conductor is -40~+50°C; the monthly average maximum relative humidity is 95% (+25°C), the allowable laying and installation temperature of the cable should not be low at -10°C. [0003] According to the patent number 201210304820.0, a mobile rubber-sheathed flexible cable for coal mines is disclosed. The mobile rubber-sheathed flexible cable for coal mines is composed of a tinned annealed copper conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semi-conductive tape wrapping layer, and ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing technology is that after a long time of use, the outer sheath of the cable will be damaged during the movement, so that the outer semi-conductive layer will be worn and the shielding effect will be weakened. In severe cases, the inner sheath and the filler will be worn layer, so that the internal circuit is exposed, resulting in poor practical effect of the cable, and at the same time, the cable will be curled during the movement, causing the outer sheath of the cable to break

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