METHOD FOR MANUFACTURE OF HALF-TRACKS OF MECHANIZED DOUBLE-TRACK DOUBLE-SECTION SPAN STRUCTURE OF BRIDGE UNIT Russian patent published in 1998 - IPC

FIELD: bridge-building industry. SUBSTANCE: according to method, component modules of bridge half-tracks are assembled in stages with provision of 90% of open horizontal welded joints and complete exclusion of overhead (inconvenient) welded joints. In addition, succession of operations described in invention, as well as sagging of load-carrying framework together with upper decking in process of their connection by welding completely exclude warping, thus improving quality of product. There is no need of special stands, expensive manipulators which is of particular importance in manufacture of prototype models. EFFECT: high efficiency. 26 dwg