BRIDGE CONSTRUCTION AND BRIDGE ASSEMBLY MACHINE FOR TRANSPORTATION, ASSEMBLY AND LAYING OF BRIDGE CONSTRUCTION ON OBSTACLE Russian patent published in 2003 - IPC

FIELD: assembly-disassembly bridge constructions; applicable in mechanized complexes for transportation of bridge construction members. SUBSTANCE: novelty in bridge construction is the fact that track sections of bridge units are made in section in form of triangular frame with truncated vertex and turned down and provided on the side of track space with guides, and track tie is made in form of box-type platform with cross-section in form of equilateral trapezium movably installed in track section guides for moving apart and together of track sections for preset size of width of bridge unit in working and transportation positions. Platform has device for moving of bridge unit over guide beam. Tie between track section of one bridge unit with track section of other bridge unit is made in lower boom in form of eyes with locking axle. Novelty in bridge assembly machine consists in that device for assembly and laying of bridge construction is additionally provided with rope pulling winch, mechanism of assembly and laying of guide beam with bridge unit of bridge superstructure on obstacle. Transverse flanges of supporting frame and posts have guide rollers with rim, embracing of guide beam section in lower and upper booms, respectively. EFFECT: higher combat characteristics of complex due to improved strength of bridge structure with continuous roadway without abutment piers regulated in height and ramps, reduced time of guide beam assembly and laying of bridge unit on guide beam with subsequent their assembly into superstructure. 4 cl, 28 dwg