The invention discloses an axle box
cross connection type express freight car
bogie. The
bogie comprises an axle
assembly, a framework, axle box suspension devices, a swing
bolster, a foundation brakedevice, side bearings, an empty and load adjusting device and a central suspension device, the axle box suspension devices are installed at the two ends of the axle
assembly respectively, the framework is located above the four axle box suspension devices, and the four axle box suspension devices are connected in a crossed mode through a crossed connection device; the
cross connection device comprises two pull rods which are located below the swing
bolster and arranged in a cross mode, and the two
tail ends of each pull rod are hinged to an axle box suspension device of the
bogie through elastic spherical hinges respectively. Constraint of the front wheel set and the rear wheel set is enhanced; the shearing rigidity between the wheel sets is increased, the snaking
instability critical speed of the bogie is greatly increased, the axle box
cross connection device can be suspended by adopting an axle box with soft rigidity, the operation stability is ensured, the
head shaking constraintof the wheel sets can be released, the wheel rail acting force, wheel rail abrasion and operation
noise are reduced, and the overall dynamic performance of the vehicle is improved.