Durable device for fuel tank cap

The utility model discloses a fuel tank cap endurance device. The device comprises a test frame, a first hexagon socket screw, a second hexagon socket screw and a limiting bolt, a test board is mounted on the test frame; the top end of the test board is connected with a support through a first hexagon socket screw. One end of the bracket is connected with an oil pipe; the top end of the oil pipe is connected with an oil tank cover, the top end of the testing frame is connected with a transverse plate, a movable base is arranged on the side face of the transverse plate, a direct-current gear motor is installed at the bottom end of the movable base, an output rotating shaft of the direct-current gear motor is connected with a rotating handle, and the rotating handle abuts against the top endof the oil tank cover. According to the utility model, the output rotating shaft of the DC gear motor is connected with the rotating handle, the rotating handle abuts against the top end of the fueltank cap, screwing-in and