SCREEN FOR CRUSHED STONE CLEANING MACHINE Russian patent published in 2004 - IPC

FIELD: railway transport, in particular, rail repair and ballast cleaning equipment.

SUBSTANCE: screen has charging part 1 and discharge part 2, box 3 with upper extension 4 and lower extension 5, at least three inclined sieves 6 and supports 7 made in the form of shock-absorbers, and vibration exciter 8. Each sieve 6 is made in the form of frame module 9 with cellular web and transverse beams contacting with cellular web. Box 3 is composed of immovably interconnected side walls and rear wall of frame modules 9. Extensions 4 and 5 are made detachable. Cellular webs are furnished with catches arranged along edges thereof. Side walls of each frame module 9 are fitted at their inner sides with supports contacting with web catches, and with pressure members having clip-shaped section, whose one side is in contact with wall of frame module 9 and other side is in contact with web catches. Pressure members are equipped at their mid portion with threaded tie-rods disposed in openings of module side walls and cooperating with nuts arranged outside thereof.

EFFECT: high-quality cleaning of crushed stone, including water-logged crushed stone, and enhanced reliability in operation of module-type screen.

4 cl