Railroad freight car truck suspension yaw stabilizer, and corresponding method

摘要

Yaw stabilization device provides a light-weight mechanism for increasing the linear yaw stiffness levels between the side frame and bolster to provide the proper inter-axle shear stiffness without affecting the compliancy required of the vertical suspension system. This invention, which fails to increase the unsprung weight of a railroad car truck assembly noticeably, may be retrofitted to existing freight car trucks in service or incorporated into newly manufactured trucks. Moreover, it does so without the need for damping wedges to increase interaxle shear stiffness and allow the wedges to function optimally for control of vertical vibrations.