Walking driving device for straddle-type monorail train

The utility model discloses a walking driving device for a straddle-type monorail train, which relates to a walking driving mechanism for a railway vehicle. A tire (1) is arranged on an outer wheel rim (2); a locking circular groove of the outer wheel rim (2) is provided with a side ring (4) and a lock ring (9); another tire (1) is arranged on an inner wheel rim (3); the locking circular groove of the inner wheel rim (3) is provided with another side ring (4) and another lock ring (9); the outer wheel rim (2), a space ring (8), the inner wheel rim (3) and a wedge block (5) are subsequently assembled outside a wheel core (6); a driving shaft (7) is arranged on the wheel core (6); a positioning pin (10) goes through a pin hole of the driving shaft (7) and is inserted into the pin hole of the wheel core (6); one end of a stud bolt (11) goes through a through hole of the driving shaft (7) and is meshed with a fixing hole of the wheel core (6) by internal thread, and the other end is meshed with a nut (12); and a