Dynamic stabilisation has become indispensable to sustainable track maintenance. This is all the more important as traffic loads increase. Now, technological refinement brings further improvements for dynamic machines made by Plasser & Theurer.
The ballast bed must be homogeneous and stable to fulfill its function: to distribute the dynamic forces produced by rail traffic into the formation, ensuring that the track geometry is maintained for as long as possible. The objective of dynamic track stabilisation is to produce a homogeneous ballast bed after the track has been maintained using a tamping machine.
As a technological further development of the new stabilising units by Plasser & Theurer, not only the vertical load and vibration frequency, but also the impact force can be adjusted. This is made possible by a hydraulically infinitely variable imbalance.
During dynamic stabilisation, the impact force affects the track settlement the most. This is why the variable imbalance improves the controllability of track settling. This is particularly beneficial for our dynamic machines – tamping machines with integrated dynamic track stabilisation. Compared to the conventional design, the imbalance can be switched off more quickly, allowing for a more homogeneous track geometry quality despite the frequent stop-and-go on the work site.