Novel spiral gear

The utility model discloses a novel spiral gear which comprises a supporting body, a rotating rod is movably installed on the inner side of the supporting body, an oblique gear is fixedly installed on the side face of the rotating rod, a driven gear is connected to the side face of the oblique gear in a meshed mode, and a connecting rod is fixedly installed in the middle of the driven gear. A rotating column is fixedly installed on the side face of the middle of the connecting rod. According to the novel spiral gear, the side face of the oblique gear is in meshed connection with a driven gear, so that the driven gear can be driven to rotate, when the driven gear rotates, a connecting rod can be driven to rotate, meanwhile, the connecting rod can drive a rotating column to move, an adjusting groove is formed in the side face of the rotating column, and the bottom of the adjusting column is located in the adjusting groove; an adjusting column is fixed, so that a rotating column can move front and back during ro