Transmission trunk cable for coal well

The utility model relates to the technical field of transmission trunk cable for coal well, comprising a conductor, a signal line, cable source lines, an insulation layer, an isolation belt, a plastic-aluminum composite belt, a woven shield and an outer sheath. The utility model is characterized in that the transmission trunk cable also comprises a glass cloth belt, an inner sheath and a woven armor. The exterior of the conductor is wrapped by a double layer flameproof glass cloth belt and extrudes a cross-linked polyethylene insulation layer to compose a signal line core and the cable source line. After being twisted, two signal line cores are wrapped by a mono-layer PE isolation belt and a mono-layer plastic-aluminum composite belt, and then the exterior is wrapped by a mono-layer PE isolation belt to compose the signal line. The signal line and two cable source lines are wrapped by a double layer PE isolation belt to compose a cable core. The utility model has high moisture-proof performance, high explosion-proof index, high anti-interference performance, high transmission performance, high-effective flame retardant without extending flame and temperature-insensitive. The utility model is also anti-collision with good flexible characteristic, anti-ageing, corrosion-proof, oil-proof and durable.