Drive axle shell structure for automotive transmission system

The utility model discloses a drive axle shell structure for an automotive transmission system. The drive axle shell structure for the automotive transmission system comprises a drive axle shell body and an installing shell, a left axle shell shaft and a right axle shell shaft which are arranged on the drive axle shell body; the inner side of the left axle shell shaft and the inner side of the right axle shell shaft are each provided with an axle shell middle segment portion, the axle shell middle segment portions are each provided with installing portions, a fixing portion is arranged on the circumference surface of the installing shell, installing bolts are arranged on the installing portions, and the installing portions and the fixing portion are fixed through the installing bolts; the left axle shell shaft and the right axle shell shaft are each provided with a strengthening rod which abuts against the fixing portion, the ends of one sides, close to the left axle shell shaft and the right axle shell shaft, of the strengthening rods are each provided with a fixing block, and the left axle shell shaft and the right axle shell shaft are provided with fixing clamping grooves matched with the fixing blocks. The drive axle shell structure for the automotive transmission system has the advantages that mounting and dismounting are convenient, later cleaning and maintaining are convenient, the cost is low, the overall strength is high, the weight is small, the service life is long, and safety and reliability are achieved.