| 摘要 |
FIELD: construction.SUBSTANCE: bridge bearing comprises an anchor board, a lower beam with a curvilinear sliding surface, an upper beam, an upper support board and a central pivot, rigidly fixed in the anchor board and stretching via the lower and upper beams. The novelty is the fact that the curvilinear sliding surface of the lower beam is arranged as cylindrical and is located in the longitudinal direction of the bridge, the central pivot is equipped with a bushing, which surrounds it with a minimum gap and having lugs in the upper part in the longitudinal direction along the bridge axis, and an upper thrust nut resting against the bushing, at the same time the upper beam has a horizontal sliding plane, interacting with the cylindrical sliding surface of the lower beam, and contains in plan in the longitudinal direction of the bridge a slot with guides, onto which bushing lugs rest with the possibility of longitudinal displacement.EFFECT: increased operational reliability.3 dwg |
