Automatic fault diagnosis and isolation device for overhead line of power distribution network

A power distribution network overhead line fault automatic diagnosis isolation device disclosed by the present invention comprises an adaptation block, the bottom of the adaptation block is provided with an installation mechanism, a plurality of overhead lines are arranged between the interior of the adaptation block and the installation mechanism, the installation mechanism is used for installing the adaptation block on the plurality of overhead lines, and the adaptation block is provided with a plurality of isolation devices. A first motor is turned on to drive a turntable to rotate, a sleeve rod pushes a cover plate to slide on a sliding rod through a first connecting shaft, so that the detection position of a monitoring probe is adjusted, a second motor is turned on to drive a driving gear to drive a driven gear to rotate, and the monitoring probe can be driven to rotate by 180 degrees. Therefore, the monitoring probe can detect the parts, located on the two sides of the adaptive block, of the multiple ov