Ton barrel cover switch

The utility model belongs to the technical field of cover opening devices, and particularly relates to a ton barrel cover switch which comprises an outer ring, an inner ring is rotatably connected in the outer ring, ratchet wheel assemblies are installed on the upper portion and the lower portion of the outer portion of the inner ring respectively, each ratchet wheel assembly comprises a plurality of tooth grooves distributed annularly, and the tooth grooves are formed in the outer wall of the inner ring. A separation layer is fixedly connected to the center of the interior of the inner ring, and clamping assemblies are installed on the upper portion and the lower portion of the separation layer correspondingly; the clamping blocks clamp the protruding edges of the ton barrel cover to push the ton barrel cover to rotate and be opened, the double-end motor operates to drive the lead screw to rotate, then the position of the clamping blocks is rapidly adjusted, and compared with the prior art, the ton barrel co