ROLLER TRANSVERSELY MOVABLE BEARING PART OF BRIDGE Russian patent published in 1996 - IPC

FIELD: bridge construction. SUBSTANCE: bridge bearing part has upper and lower baseplates and roller located between them. Distinguishing feature consists in that the bearing part has herring-bone rack gears each having one rack and gear meshed with rack installed with slide fit on one of roller trunnions. Minimum length of path of gear sliding equals the half of the length of preset transverse displacement of bearing part and roller radius is determined by the offered relation. In this case, one of baseplates may be made of two parts, conjugated to each other through cylindrical hinge whose axis is square to the roller axis. EFFECT: higher efficiency. 2 cl, 7 dwg