Insulation device for preventing grounding fault in electric power field

The invention discloses an insulation device for preventing a grounding fault in an electric power field. The insulation device comprises a bottom plate, a left insulation placing ring and a right insulation placing ring. Two supports are symmetrically and fixedly installed on the left side and the right side of the bottom plate, a top plate is fixedly installed on the tops of the supports, the left insulation placing ring and the right insulation placing ring are symmetrically arranged on the left side and the right side above the bottom plate, and the lower ends of the left insulation placing ring and the right insulation placing ring are hinged to each other. First connecting rods are fixedly mounted at the upper ends of the left insulating placement ring and the right insulating placement ring, a first sliding block is slidably mounted at the bottom of the top plate, one side of the first sliding block is fixedly connected with the support through a connecting spring, and the other side of the first slidi