Patent RU-2311520-C1 (RU)
Title: Shielded fire escape with lifting device
Inventor: JANSUFIN NIGMATULLA RAKHMATULL
IPC: E06C9/02
Filed: 2006-03-28
Granted: 2007-11-27
Abstract: FIELD: rescue equipment to be used in emergency conditions for fire-suppression and people evacuation, for construction, namely to erect skeleton-type buildings and building structures. 
     SUBSTANCE: fire escape comprises load-bearing frame with bearing end barriers pivotally connected thereto, flights with semi-platforms and with pivotally connected collapsible railing, front barrier made as rectangular nets articulated with each other and clips with end barriers. The end barriers are composed of rectangular girder frames articulated one to another. The railing may be folded so that the railing is within flight plane during transportation. Front barrier facing building is composed of shielded heat-resistant sheet material provided with door openings. Door leafs are made of the same sheet material and are opened in shaft towards stairs. U-shaped tube with perforated orifices is connected to load-bearing frame from building side. The perforated orifices face to shielding sheets. The tube is sealed from the first side of symmetry axis. Another end thereof has vertical water riser extending for the full building height and comprising fire hose connection means arranged at lower riser end. The second water riser is connected from the second side of symmetry axis. The second water riser has branches and valves for fire hoses provided with water canons. Double-groove pulley having large diameter is connected to driving shaft of planetary reducer driven by electric motor. Two double-groove pulleys having lesser diameters are arranged directly over hauling pulleys to increase cable wrapping area. Two channel beams are arranged along longitudinal symmetry axis so that the beams are spaced equal distances from load-bearing frame axis and equally project from load-bearing frame end. Two ears are connected to sealed ends of the channel beams. The ears have coaxial and horizontal orifices made in ear ends and the same double-groove pulley having lesser diameters. Two cables pass in double-groove pulley grooves. Pivotally connected frames with c-shaped lift cage guiding means are connected to ends near load-bearing frame corners and to end bearing and girder-framed fire escape barriers. Cable ends are connected to ends of equal-arm levers having ears located over each cage. Levers arranged over cage are rotary fastened to vertical control-rod having axis passing through center of empty cage gravity. Orifice to receive control rod and tube enclosing the control rod is formed on horizontal cage roof part. Load washer is secured under said orifice. Support ring having diametrical orifice is located under the asher. Finger or bolt is inserted in the diametrical orifice and is fixed with nut. Tube enclosing control-rod has diametrically formed elongated orifice. Bent horizontal plate is connected to upper tube end. Lower end thereof has fixed equal-arm lever having horizontal and coaxial orifices at ear ends. Compression spring is put on lower stem of control-rod and is stopped with adjusting nut. Lower equal-arm lever is connected with symmetric lever with respect to longitudinal symmetry axis and has elongated orifice made in area of connection thereof with equal-arm lever. Another lever end has orifice. The lever comprises evolvent double-sided caps to brake cages in the case of cable breaking. Slides enclosing c-shaped guiding means are connected to upper cage parts opposite to guiding means. The slides have rectangular orifices arranged in mid-height areas. Floating slide is located in c-shaped guiding means and has T-shaped cross-section. Orifice is made in floating slide wall. Floating slide wall is inserted in the rectangular orifice made in slide fastened to cage and is connected with symmetric lever provided with cams by means of finger or bolt. 
     EFFECT: decreased time of people evacuation. 
     8 dwg