Lower-layer low-voltage insulation isolation device of power transmission line

The utility model relates to a lower-layer low-voltage insulation isolation device for a power transmission line, which comprises an insulation connecting rod and insulation plates fixed at two ends of the insulation connecting rod, a channel for operators to pass through is formed between the two insulation plates, included angles are respectively formed between the two insulation plates and the insulation connecting rod, and the included angles are larger than 0 degree and smaller than 180 degrees. A safe distance is formed between the insulating connecting rod and the front side of the insulating plate; the insulation connecting rod is provided with a suspension member used for being hung on a ladder stand. The power transmission line lower-layer low-voltage insulation isolation device provided in the technical scheme has an isolation function, can isolate low-voltage live lines on the two sides of the lower layer of a tower, and can effectively solve the problem that an existing maintenance auxiliary tool