Hole pitch-adjustable crank arm structure

The utility model is suitable for the technical field of disconnecting switches, and provides a pitch-adjustable crank arm structure, which comprises a sleeve, a crank arm plate and a clamping plate, the crank arm plate is vertically arranged on the surface of the sleeve; a first long kidney-shaped hole is transversely formed in the connecting lever plate in a penetrating mode, first round holes are transversely formed in the connecting lever plate and located on the outer side and the inner side of the first long kidney-shaped hole in a penetrating mode, and the first long kidney-shaped hole and the two first round holes are distributed along the same straight line. According to the crank arm structure capable of adjusting the hole pitch, through the second long kidney-shaped hole in the clamping plate and the first round hole in the crank arm plate, when the crank arm plate works, if the hole pitch needs to be adjusted and a nut needs to be loosened, the crank arm plate can move by a certain distance in the