Innovative ideas implemented in the machine:

— sand filling of trams by using exchangeable containers filled with sand;

— new flexible screw that provides sand delivery from the exchangeable container to the tram hopper box.

The benefits of the machine compared with the analogues:

— low cost;

— no dust while sand filling of tram;

— high productivity (12 litres per minute).

Innovative ideas implemented in the machine:

— mechanical motion compensator for the exible screw;

— new flexible screw that provides sand delivery to the hopper box.

The benets of the machine compared with the analogues:

— low cost;

— no dust while sand filling of tram and locomotive;

— high productivity (12 litres per minute).