High-power alternating current transmission locomotive and driving device thereof

The utility model provides a driving device applied to a high-power alternating current transmission locomotive. The driving device comprises a traction motor, a gearbox, and a gear transmission system which is accommodated in the gearbox, wherein the gear transmission system is specifically in double-stage gear transmission and comprises a driving gear which is fixedly arranged on an armature shaft of the traction motor, a driven gearwheel which is fixedly arranged on the vehicle shaft, and a gear shaft arranged between the driving gear and the driven gearwheel; the driving gear is meshed with an intermediate gearwheel on the gear shaft; and the driven gearwheel is meshed with a pinion on the gear shaft. Compared with the one-stage gear transmission driving device in the prior art, the scheme has the advantages that a large transmission ratio from the driving gear to the driven gearwheel is realized by employing the double-stage gear transmission system, and the transmission ratio can reach more than 10, so that the performance requirements of the low-speed heavy-duty alternating current transmission locomotive by employing a high-rotating-speed alternating current motor are met. On the basis, the utility model also provides a high-power alternating current transmission locomotive employing the driving device.