| 摘要 |
A two-axle motor driven railway locomotive truck having a large low positioned center plate supported on a transverse bolster mounted low between the axles and carried on the truck frame by a four element focalized elastomeric secondary suspension which also transmits driving and braking forces. Elastomeric support pads are positioned low with effective compression load lines intersecting at rail height and forming obtuse included angles to substantially eliminate weight transfer effects and provide much higher stiffness in the longitudinal driving and vertical support directions than for lateral movements and fore-and-aft pitching motions between the frame and bolster. These effects combine with a soft primary spring suspension of the truck frame on the axle journals to provide low weight transfer for high adhesion performance and maintain good wheel load equalization when negotiating vertical rail irregularities, while eliminating wearing load carrying surfaces between the bolster and the truck frame. |
