Articulated insulating device for electrified drainage connection and disconnection of 66kV tubular busbar

The utility model relates to an articulated insulating device for electrified drainage connection and disconnection of a 66kV tubular busbar. The insulating device comprises a pole ladder, an operation platform, a platform support, a working ladder and a support ladder, wherein each of the working and support ladders is composed of an upper portion and a lower portion, the upper portion is fixedly connected to the lower portion via ladder sleeves and pin rods, the upper portion of the working ladder is hinged to the operation platform, the upper portion of the support platform is hinged to the platform support, the platform support is connected with the operation platform via a hinge which is provided with locking buckles, the pole ladder is fixed between the operation platform and the platform support, the pole ladder is hinged to the upper portion of the working ladder via a connecting rod, the pole ladder and the upper portion of the working ladder are respectively provided with support bars, pieces of ins