Bogie used on high-speed subway train

The utility model relates to a bogie used on a high-speed subway train. The bogie comprises a framework, a central traction device, four groups of primary suspension devices, four axle boxes, two groups of wheel pairs, a braking device and a driving transmission device, wherein the framework comprises two side beams arranged parallelly and a cross beam vertically connected between the two side beams; the cross beam comprises two steel pipes arranged parallelly and two small longitudinal beams arranged between the two steel pipes in a spanning way; and a pair of motor hanging seats, a pair of traction pull rod seats and a pair of gearbox hanging seats are arranged back to back in a centrosymmetric manner on the outer surfaces of the two steel pipes. By adopting the bogie provided by the utility model, the circumstance that cracks are generated during operation is effectively prevented, the stress condition is improved, the operating stability of the high-speed subway train is improved, and the production and assembly manufacturability is optimized.