Power transmission line fault detection device

The utility model discloses a power transmission line fault detection device in the technical field of power transmission line fault detection, which comprises a detector main body, connecting blocks are fixedly connected to the upper ends of the two side surfaces of the detector main body, a limiting rope is fixedly connected to one side of one connecting block, and a fixing rope is fixedly connected to one side of the other connecting block. A limiting frame is arranged on one side of the fixing rope, and a limiting mechanism is arranged in the limiting frame. The limiting mechanism comprises a driving mechanism, moving grooves, baffles, fixing plates, penetrating holes and inserting rods, the penetrating holes are formed in the limiting frame, the moving grooves are formed in the two sides of the interior of the limiting frame, the baffles are fixedly connected to the inner edges of the moving grooves, and the inserting rods are fixedly connected to one side faces of the fixing plates. According to the dev