METHOD FOR MANUFACTURE OF TRUSS FRAME Russian patent published in 2009 - IPC E04C3/08 

FIELD: construction.

SUBSTANCE: method for manufacture of truss frame consists in manufacture of upper belt made of two channels, between walls of which lattice rods are welded in. Then lower belt is welded to ends of lattice rods and structure support units. At first upper belt and structure lattice are assembled in vertical plane in inverted position. Then in structure span straight lower belt is laid on lattice rod ends and welded to lattice rods. Energy introduced in unit from welded joints is used for plastic bending and pressing of lower belt to nearest ends of neighboring lattice rods. Then manufacturing process is repeated. Manufacture of frame structure is completed by insertion of lower belt ends between bars of upper belt.

EFFECT: reduction of manufacture labour intensiveness.

6 dwg