| 摘要 |
FIELD: construction. ^ SUBSTANCE: invention refers to the sphere of construction and deals with design of fire fighting equipment. The powered screened FiFi ladder consists of a bearing frame, butt-end support netted enclosures, a netted front enclosure, a screened enclosure (between the building wall and the ladder) made of heat-resistant sheet steel cool-washed with a water jet from the U-shaped perforated tube, flights with semi-landings which when assembled form twice as large a landing equipped with water duct riser pipes with nozzles and valves, as well as with a Rot/Bogdanov half-nut/ with fire hoses and hose nozzles attached to them. To the bearing frame there are holders attached (arranged along the longitudinal axis of symmetry at equal distances from the frame butt ends) with two pairs of single-rail wheels linked to electric motors and planet gear units. There is also a cable layer attached to the bearing frame (located on its transverse axis of symmetry) that consists of a reel, slippings, a hydraulic coupling and an electric motor of unidirectional rotation irrespective of the direction of the ladder motion along the monorail. There are regularly spaced brackets preventing cable deflection attached to the wall along the building perimeter within the stretch between the cable layer reel and the bearing frame. At the projecting corners of the building between the level of the fastened overhanging double-T beams and that of the brackets there are semicylindrical cable protectors attached with hooks at the bottom and at the bracket ends, turned 180 relative to the building. The call button actuating the ladder approaching the window and overspanning the whole of a vertical row of windows (from the ground floor to the roof) is at the ladder evolution control console that may be remotely mounted at the lower landing. ^ EFFECT: improving efficiency of FiFi activities. ^ 7 dwg |
