DEVICE FOR LONGITUDINAL LAUNCHING OF BRIDGE SPANS Russian patent published in 2014 - IPC E01D21/06 

FIELD: construction.

SUBSTANCE: device for longitudinal launching of bridge spans comprises a roller track with side stops, a pushing device and a rolling device, comprising roller carriages with support sheets, rubber gaskets and a transition beam interacting with the lower belt of the launched span. The transition beam along the axis of the bridge is equipped with symmetrically arranged support cantilevers, to which power jacks are fixed with the help of spring suspensions, and in the direction transverse to the axis of the bridge, the transition beam has stops at two sides with inbuilt adjustment accessories, which interact with support sheets of the roller carriages. Adjustment accessories are made in the form of a screw-nut system, the screw in which interacts with support sheets of roller carriages. Support sheets are equipped with guide slots, in which the roller carriages are fixed. Power jacks are made as hydraulic with a drive from a manual pump station.

EFFECT: improved reliability.

4 cl, 3 dwg