Fire-resistant choke door in stairwell of high-rise building

Abstract

The invention discloses a fireproofing conjugate fall door of high-rise building stairwells. The fireproofing conjugate fall door comprises the stairwells (1). A middle partition wall (13) is arranged between upper stairs (11) and lower stairs (12), a protruding rib (3) is formed on a stair stringer above the lower stairs (12), an oblique fixing protruding rib (4) is formed on the side wall of the lower stairs (12), an oblique pressing protruding rib (5) is formed on one side wall, opposite to the side wall of the lower stairs (12), a flip sliding door (7) is hinged to the oblique fixing protruding rib (4) through hinges (6), the hinged side of the flip sliding door (7) presses against the hinges (6) while the other side of the same presses against the oblique pressing protruding rib (5), and the top of a sliding door (72) of the flip sliding door (7) presses against the protruding rib (3). The fireproofing conjugate fall door is convenient to move and operate, good in airtightness and capable of preventing fire in the stairwells from up spreading.

Description

Technical field: [0001] The invention relates to the technical field of building floors, and more specifically relates to a fire-resistant choke door for a stairwell of a high-rise building. Background technique: [0002] When a fire breaks out in a high-rise building, the flame in the stairwell will go up and spread, which will increase the hazard of the fire. In order to prevent this from happening, the existing blocking method is to install rolling doors in the stairwell. Pull down the rolling shutter door in the stairwell above it to stop the fire. However, the handle of the rolling door is generally relatively high. To close the door normally, a person needs to hold an extension rod to hook the handle of the rolling door and pull it down. This is not only inconvenient, but also needs help when pulling For other tools, when the fire spreads in an emergency, once the tool cannot be found, the door cannot be closed, and the fire cannot be prevented from running up. Inven...

AI Technical Summary

Problems solved by technology

[0002] When a fire breaks out in a high-rise building, the flame in the stairwell will go up and spread, which will increase the hazard of the fire. In order to prevent this from happening, the existing blocking method is to install rolling doors in the stairwell. Pull down the rolling shutter door in the stairwell above it to stop the fire. However, the handle of the rolling door is generally relatively high. To close the door normally, a person needs to hold an extension rod to hook the handle of the rolling door and pull it down. This is not only inconvenient, but also needs help when pulling For other tools, when the fire spreads in an emergency, once the tool cannot be found, the door cannot be closed, and the fire cannot be prevented from escaping.

Images