Digging shovel for mining strip mine

The digging shovel comprises a digging shovel body, shovel teeth are installed on the right side face of the digging shovel body, shovel tooth sleeves are installed on the outer surfaces of the shovel teeth, straight-through grooves are formed in the shovel teeth, sliding grooves are formed in the straight-through grooves in a connected mode, and fixing discs are installed in the straight-through grooves. According to the digging shovel for open-pit mine mining, a fixing disc is arranged, specifically, a connecting rod, the fixing disc and a limiting protrusion are inserted into a straight-through groove and a sliding groove firstly, the connecting rod is rotated to drive the fixing disc and the limiting protrusion to be staggered with the sliding groove, and at the moment, the limiting protrusion is limited by the sliding groove; in the process of rotating the connecting rod, the first threaded rod is driven to be in threaded connection with the interior of the straight-through groove, the connecting rod and