Friction dumper wedge Casting Wedge Ride Control Bogie Three Piece Casting Bogie

Friction dumper wedge Casting Wedge Ride Control Bogie Three Piece Casting Bogie

1. Brief introduction:

Wedge suspensions are essential for ride control three-piece bogies. This type of suspension uses a wedge-shaped mechanism that varies friction to dampen vibrations. It consists of several parts: a side frame column wear plate, a combined wedge, an inclined wear plate, and double stiffness damping springs. Vibration energy is decreased through the friction created between the wedge and the side frames wear plate.

Research shows that a well-designed wedge with the optimal angle significantly reduces vertical acceleration and the friction between the wheels and the rails. This optimization also minimizes deviations during loaded and empty runs. Railway freight cars that utilize wedges with the ideal inclination experience marked improvements in stability, hunting speed, and lower derailment risks.

 Friction wedge is made of ADI (Austenitic Ductile Iron), Casting alloy steel or grey cast iron by casting. The manufacturing process complies with the Chinese railway standard TB/T2813 ‘friction dumper wedge for freight car’.

 We could design various friction wedges for the requirements of various bolster and side frame interfaces of different bogies. 

2. Main technical parameters：

3. Detail photos: