Trolleybus Spring Head

In this solution, patented by DTK, the DTK spring head is fitted at the top end of the power collector pole. This makes it possible for the contact shoe to move horizontally and, if necessary, to a limited extent vertically, without the need for the entire pole to be moved.

As a result, the force impulses acting on the contact shoe are converted into kinetic energy. The mass acted upon and moved is less than that of the entire power collector system without the spring element.


  • Reduced derailment from the overhead cable and thus less one-sided wire wear, plus reduced wear to the contact shoe sliders
  • Significant technical and economic benefits over conventional systems
  • Can be retrofitted to all power collector types

Images of the spring head

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