Fault detection device convenient to operate

The utility model discloses a fault detection device convenient to operate, relates to the technical field of fault detection, and aims to solve the problem that a person needs to manually climb a high place to detect the fault of a high-voltage line in the prior art, and provides the following scheme: the fault detection device comprises a lower sealing box and an upper sealing box, the lower sealing box and the upper sealing box are detachable, a connecting bolt is connected between the lower sealing box and the upper sealing box, a detection opening is formed in the connecting portion of the lower sealing box and the upper sealing box, a wire is arranged on the inner side of the detection opening, two pulleys making contact with the wire are arranged on the inner side of the upper sealing box, and a belt is in transmission connection between the two pulleys. The inner side of the upper sealing box is fixedly connected with a driving motor, the output end of the driving motor is connected with one pulley, t