Efficient cable insulation detector

The utility model discloses an efficient cable insulation detector, which belongs to the technical field of detectors, and comprises a portable box, the front end of the portable box is provided with a placement groove, the portable box is internally provided with an adjusting cavity, the adjusting cavity is internally and rotatably provided with a rotating shaft, the outer wall of the rotating shaft is provided with a first bevel gear, and the outer wall of the rotating shaft is provided with a second bevel gear. A threaded rod is fixedly arranged on one side of the rotating shaft, a sliding block is arranged on the outer wall of the threaded rod, a limiting hole is formed in one side of the adjusting cavity, a connecting rod is arranged at the rear end of the sliding block, a through hole is formed in the front end of the portable box, a rotating rod is arranged in the through hole, and a second bevel gear is fixedly arranged at the rear end of the rotating rod. And a cable insulation detector body is arran