Rectangular axis industrial gear box with connecting flange

The utility model discloses a rectangular axis industrial gear box with a connecting flange. The rectangular axis industrial gear box with the connecting flange comprises a machine body, an input shaft and an output shaft. One end of the input shaft is connected with drive equipment in a transmission mode, and the other end of the input shaft penetrates through the machine body and is connected with the output shaft in a transmission mode through a gear shaft and a gear. The output shaft is fixedly installed in the machine body. One end of the input shaft penetrates through the motor connecting flange assembled on an input flange and is connected with the drive equipment, the drive equipment is fixedly connected with the motor connecting flange, and a hollow output shaft with internal involute splines is adopted as the output shaft. The rectangular axis industrial gear box with the connecting flange is compact in structure, has the advantages of being reliable in operation, good in concentricity, low in noise