DOUBLE-LEAF FIRE-PREVENTION GATES (VERSIONS) Russian patent published in 2014 - IPC E06B3/06 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, namely, to the structures of fire-prevention gates. Double-leaf fire-prevention gates consist of U-shaped frame made of steel cold-formed profiles, formed by columns with the upper cross member and threshold; frame porch, heat-strengthened tape and seal, glued around the perimeter of the porch; two door leaves, each of them has the frame made of bent steel profiles with the stiffening elements attached inside the frame; steel plates, fixed on the frame, forming the front and back surfaces of the door leaf; door hinges, door latches and locking devices; inner cavity limited by inner surfaces of the steel sheets, side columns and upper and lower cross members, sandwich bags of heat-insulating material arranged in sections of the inner cavity, comprising the inner layer made of fireproof mineral wool and outer layers made of basaltic cardboard, at that the columns and upper cross-bar of U-shaped frame are made of bent -shaped profile; columns have end plates, welded to their upper and lower ends, with holes for thread connections of ends of the upper cross-bar and threshold with columns; frame of door leaves consists of two columns joined inter se and two cross-bars, made of bent -shaped profile with shoulder for the porch along the perimeter of the frame; four ⊥-shaped stiffening elements made of horizontal and vertical steel profiles, bent from strip bar with welded pads at the ends for attachment to columns and to cross-bars fixed in the framework by pairs and mutually parallel with formation of gap, filled with the heat-insulating material.

EFFECT: structure improvement.

10 cl, 15 dwg