U-shaped cross beam bogie for fly-by-wire rail flaw detection vehicle

The utility model provides a U-shaped cross beam bogie for a fly-by-wire rail flaw detection vehicle, which belongs to the technical field of bogies and comprises a framework, the framework is of an H-shaped integral welding type structure consisting of side beams and cross beams, the side beams are of linear beam structures, and the cross beams are of U-shaped beam structures with concave middle parts; wheel set axle box positioning devices are arranged on the lower portions of the two ends of the framework, secondary suspension devices are arranged on the upper portions of the middles of side beams of the framework, a traction device is arranged in the middle of the upper portion of a cross beam of the framework, and foundation braking devices and driving devices are arranged on the two sides of the cross beam. The utility model solves the problem that a traction motor and a fly-by-wire gear box cannot be mounted on the power bogie of the traditional subway rail flaw detection car, and unifies a secondary s