Tripping device of operating mechanism of circuit breaker

The utility model relates to a tripping device of an operating mechanism of a circuit breaker, comprising an oil cup, an oil cup cap is fixed at an oil cup opening, silicone oil is filled in the oil cup, a movable iron core is arranged in the oil cup, an iron core spring is arranged between the movable iron core and the oil cup cap, a pole shoe is arranged at the outer side of one end of the oil cup opposite to the oil cup cap, a fixing frame is arranged at the lower part of the pole shoe, the oil cup is fixed on the fixing frame, an armature is rotationally connected on the fixing frame, the armature and the oil cup are arranged side by side, a magnet coil is wound on the outer wall of the oil cup between the fixing frame and the oil cup cap, a restoring spring is arranged at the outer side of the upper end of the armature, and an adjusting screw is arranged at the other end of the restoring spring. The tripping device is simple in structure, and exquisite and reasonable and is easy and convenient to process