DEVICE FUR DELIVERING SAND UNDER LOCOMOTIVE WHEELS Russian patent published in 1997 - IPC

FIELD: railway transport; locomotive sanding systems; devices to increase wheel-to-rail adhesion. SUBSTANCE: device has sand hopper 1 with holes 4, valves 5 installed on hopper 1 over holes 4 with armatures 6 secured in valves, and electromagnet 7 to control closing and opening of valves 5. Sand hopper 1 made in form of hollow ring with inner radial partitions is secured on wheelset disk. Additional holes are made on outer side of hopper 1. Holes are arranged diametrically opposite and equidistantly from each other. Valves with armatures secured on valves are placed over corresponding holes. Electromagnet 7 is arranged in lower portion of hopper above valves displaced when wheels rotate. EFFECT: improved adhesion of wheel and rail. 3 dwg