High-speed rail supported

High-speed rail supported on both sides of the rack mounted between the cross sustaining device for the elastic, with three aspects. Improve the bogie ling stiffness to keep vehicles line 120 km/h speed running stable for a long time. Implements the cross elastic coupling between on both sides of the frame, improve bogie curve through performance, reduce the brim abrasion. To improve the stress state of vibration reduction system, improve the inclined wedge and the service life of wear plate.