Fixing device for aerial insulated cable

The invention relates to the field of aerial cable fixing, in particular to an aerial insulated cable fixing device which comprises an installation box connected to a tower; the two sliding boxes are symmetrically connected in the mounting box in a sliding manner; the two arc-shaped limiting plates are symmetrically arranged on the two sides of the cable body; according to the invention, by arranging the temperature sensor and the arc-shaped limiting plates, the first pushing mechanism is started when the temperature reaches a specified value, so that the two arc-shaped limiting plates clamp and limit the cable body, and the cable body is pulled in the direction of the tower, thereby tightening the cable body, reducing the sagging radian of the cable body, and improving the safety of the cable body. When the cable body is subjected to thermal expansion due to temperature rise, on one hand, the sagging radian of the cable body is reduced, the damage to electric power is reduced, and on the other hand, the poss