Rolling and sliding device for installation and traction of steel truss girder

The invention belongs to the technical field of steel truss girder construction, and particularly relates to a rolling sliding device for steel truss girder installation traction, which comprises a tank trolley body, sound-light alarm lamps which are symmetrically distributed are fixedly installed on the upper surface of the tank trolley body, and slideway wheels which are distributed in a linear array are hinged to the inner wall of the tank trolley body through pin shafts; and an offset monitoring mechanism is arranged on the outer surface of the slideway wheel, comprises an annular limiting block, and monitors and alarms transverse offset of the slideway wheel when the steel truss girder is subjected to incremental launching construction. According to the rolling and sliding device for steel truss girder installation and traction, by arranging the offset monitoring mechanism, the adjusting mechanism and the limiting mechanism, monitoring and alarming are conducted on transverse offset when the sliding way