RU2349727C2 - Yansufin shielded escape stair with vertical flights and lifts - Google Patents

Abstract

FIELD: construction industry.

SUBSTANCE: shielded fire escape consists of load-carrying frame with load-carrying end enclosures hinged thereto, which are made of rectangular grid frames hinged to each other, stair flights with half-landings, front enclosures made of rectangular meshes hinged to each other, and clamps with end enclosures. Front stair enclosures facing the building comprise shielded plates made from heat-proof material, on which there provided are door openings made of the same heat-proof material and opened inward the stair well. On load-carrying frame from the building side there attached is horizontal "п"-shaped tube with punched holes directed to shielded plates; at that perforated tube is blanked off on one side in longitudinal symmetry axis. To the other side of perforated tube there attached is a tube bend directed downwards, and on the end of that tube fixed is a quick-detachable Bogdanov/Rott nut, and on adjacent half-landings in the corners of stair well there made are holes with diameter of not less than 100 mm with narrow annulus with chamfers whereinto passed is a fire-hose equipped with Bogdanov/Rott nuts on its ends. At that fire-hose length is equal to stair height, and is connected to "п"-shaped perforated tube with Bogdanov/Rott nuts, and the other fire-hose of the same length is passed into holes on half-landings and is blanked off from above, and suspended on load-carrying frame or a plug of perforated tube; at that between two landings there provided are shutoff cocks with fire-hoses and fire nozzles, and stair flights are made vertical at right angle to half-landings.

EFFECT: stair weight decrease, possibility of re-locating the stairs along the building perimeter, and affording access to fire extinguishing from stair landings.

6 dwg

Description

The invention relates to the Ministry of Emergencies and can be used in construction mainly on frame industrial buildings, structures.

Known fire shielded staircase with inclined marches according to patent No. 2267594, containing a supporting frame with articulated supporting end rails of rectangular lattice frames, articulated interconnected, inclined staircases with half-floors, front rails of rectangular meshes connected to each other, and end guards, front stair railings facing the building, made of shielded sheets of heat-resistant material, on which openings are made for doors, and these openings are filled from the same heat-resistant sheet material, and ladders opening inside the shaft, a horizontal U-shaped pipe is attached to the supporting frame from the side of the building with perforated holes directed to the shielding sheets, and on one side the pipe is muffled and, on the other hand, a vertical water riser is attached to the entire height of the building with means for attaching a fire hose at the lower end, on the opposite side, a second vert Calne water disposals riser adapted to taps and valves for fire hoses with water cannons.

The disadvantage is the heaviness due to inclined flights, leading to an increase in the stairwell, respectively, to an increase in the weight of the entire staircase, as well as the presence of two risers from steel pipes significantly increases the weight.

The aim of the invention is to facilitate a suspended staircase.

This goal is achieved by the fact that the inclined marches with two half-sites are made with vertical marches-step-ladders with two half-sites, the upper and the lower tier. In the corners from one of the load-bearing barriers on adjacent half-floors of one tier, vertically aligned holes are made in which narrow rings with chamfers at the ends are attached, such that sleeves with taps and a Bogdanov / Rota nut are pushed into the holes. On the end sides of the stairs are attached a c-shaped cross section of the guide rails of the elevators, where the ballast weight is each cabin in relation to each other. The traction force applied to the elevators is P = Qe ^fα where Q is the weight of the cabin, e is the base of the natural logarithm P = 2.73, f = 0.15, α = 6 radians = 57.3 degrees.

New is that staircases from an inclined position have become vertical. This made it possible to significantly reduce the size of the front fences, and turn the stairwell from rectangular to square. If earlier it was necessary to use bars of end load-bearing fences with a diameter of 16 mm, now it is possible to use 14 mm, this saves the weight of the end fence by 32 percent. Pipe risers are replaced by fire hoses, for this purpose in adjacent half-sites (at the same level) in the corners holes are made on one side of the stairs, a narrow ring is inserted and fixed into the hole. A fire hose is drawn into this ring and connected from above to a U-shaped perforated pipe with a pipe bend downward at the end and a Bogdanov / Rota nut at the end, and a Bogdanov / Rota nut attached to the bottom of the sleeve from the bottom. A fire hose, equipped with cranes and sleeves for every two sites, also pokes through the second holes. Replacing the pipe risers with sleeves will reduce the weight of the stairs with a building height of 30 m by 780 kg.

Figure 1 shows a general view of a staircase with elevator cabs suspended on a building on monorail tracks, and below is a packet of marches folded into a transportable packet with platforms and end load-bearing barriers;

figure 2 is a transverse section of the building and the end view of the stairs with an elevator;

figure 3 - the relative position of the two marches-steps with half-sites;

figure 4 is a view along aa;

figure 5 - marches-steps with half-sites, platforms and with holes for risers - fire hoses;

figure 6 - holes for fire hoses in BB.

Fire-shielded staircase with vertical flights and elevators contains a supporting frame 1, equipped on the longitudinal axis of symmetry with two clips 2, mounted rotary on vertical axes to bypass the protruding corners of the building. Each cage is equipped with an electric drive and monorail driven track rollers-wheels 3. The elevator car drive is equipped with a two-armed drive unit fixed to the axis of the planetary gear 4 driven by an electric motor. On the supporting frame 1 there is a cable drum on a fluid coupling with current collectors and with an electric drive, which protects the cable from sagging (not shown in the drawing due to the small scale), load-bearing end rails 5. Frontal rails 6 from rectangular are attached to the extreme branches-rods of end rails grids. Stair flights 7 are made vertical with half-floors one tier higher and lower, as a result of which the stairwell instead of a rectangular one has become square. The front guard 8 is made shielded from the side of the building from a heat-resistant sheet with a doorway, the doors are made of the same sheet opening inside the stairwell. On the side of the building, a p-shaped perforated pipe 9 is attached to the supporting frame, one end of which is plugged on the longitudinal axis of symmetry, and the other end is equipped with a Bogdanov / Rota quick-release nut / to which a fire hose 10 is attached, the entire length of the ladder, previously passed through all the holes on semi-sites. On the other hand, the fire hose 11, its upper end must be plugged and attached to the plugged end of the u-shaped perforated pipe, previously passed through all the second holes on the semi-sites to the entire height of the stairs. For every two sites there must be a crane equipped with a hose 12 with a hose.

Technical and economic advantages of the proposed technical solution are as follows:

- the weight of the stairs is significantly reduced;

- the staircase can move around the perimeter of the building;

- firefighters are provided with access to extinguishing the fire from the stairs.

Claims (1)

Fire-shielded staircase containing a supporting frame with pivotally attached load-bearing end rails from rectangular lattice frames pivotally interconnected, flight of stairs with half-floors, front rails of rectangular nets pivotally interconnected, and clamps with end rails, frontal rails to the building, made of shielded sheets of heat-resistant material, on which are made openings for doors made of the same heat-resistant foxes of merchandise material and stairs that open inside the shaft, a horizontal U-shaped pipe with perforated holes directed to the shielding sheets is attached to the supporting frame from the side of the building, and on one side of the longitudinal axis of symmetry the perforated pipe is muffled, characterized in that to the second side of the perforated pipe a downward pipe elbow is attached, and a quick-detachable nut of Bogdanov (Rota) is attached to the end of this pipe, and holes are made on adjacent semi-sites in the corners of the stairwell at least 100 mm in meter with a narrow ring with chamfers, into which a fire hose is completed, equipped with Bogdanov (Rota) nuts at the ends, the fire hose having a length equal to the height of the ladder and connected by Bogdanov (Rota) nuts to a U-shaped perforated pipe, and a second fire hose of the same length, passed into openings on half-sites, is muffled and suspended from above on a supporting frame or on a plug of a perforated pipe, and shutoff valves with fire hoses and hoses are made between the two sites, and the flights of stairs Full vertical at right angles to poluploschadkam.

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