METHOD OF MAKING FOLDING LIGHTING MAST WITH REGULAR HEIGHT-VARIABLE CROSS-SECTION Russian patent published in 2024 - IPC E04H12/08 E04H12/34 

FIELD: construction of power engineering facilities.

SUBSTANCE: invention relates to electric lighting of streets, squares, to steel folding masts used for arrangement of lighting fixtures. Method of making a folding lighting mast of a regular height-variable cross-section consists in forming a closed polyhedral cross-section, at which the mast, including the upper and lower parts of the shaft, is cut out from a solid sheet, connecting them with temporary bridges with length from 3 to 10 mm. After bending and welding of the longitudinal seam, the bushing of the hinged assembly is welded to the mast workpiece, after which the crosspieces are removed, the base of the mast is separated from the top and the bracket of the faceted open section is welded, lateral sides of which are jaws of hinge assembly, with slot for fixation of winch hook and with hole for installation of bolt required for fixation of upper section in working vertical position.

EFFECT: reduction of labor intensity and cost of manufacturing of folding lighting mast with hinged device, which allows to replace lighting devices without use of additional equipment.

2 cl, 4 dwg