Building fire disaster-earthquake life preserver

Abstract

Provided is a life preserver. When a fire disaster, an earthquake and other emergencies happen to a building, personnel trapped in the building can escape quickly through the life preserver. In a cylindrical outer shell, a safety rope groove wheel and an inner gear wheel are connected through sunk screws, the inner gear, three transmission gears and a center gear are connected in sequence in a meshing mode, when the low rotating speed of the safety rope groove wheel is transmitted to a center gear shaft, the rotating speed is increased by four times, the center gear shaft drives two semicircular friction blocks to rotate at high speed, centrifugal force is used for generating friction between friction pieces and the inner wall of the cylindrical outer shell, the rotating speed of the safety rope groove wheel is reduced, and accordingly the moving speed of a safety rope is controlled.

Description

Technical field [0001] The invention relates to a life-saving device for all trapped persons in a building to quickly and safely go downstairs to escape when elevators and stairs cannot be used normally in critical situations such as fire and earthquake in a building. Background technique [0002] Presently known when a fire breaks out in a building, the elevator must not be used, and people will be trapped in the elevator because of the sudden power failure of the fire, and the smoke and fire will rise from the elevator shaft and cause the people in the elevator to suffocate. Stairs will also be blocked by pyrotechnics due to the chimney effect, making escape impossible. Some people escape blindly because they cannot bear the smoke and fire or panic, such as jumping off a building, which will cause unnecessary casualties. The ropes of some life-saving equipment are made of non-refractory materials, such as elastic cloth bag slides. When a flame bursts out of a certain wind...

AI Technical Summary

Problems solved by technology

If there is no fire brigade or it is far away from the fire brigade, or the road near the fire building is narrow, and there are obstacles such as cars and sand piles on both sides of the road, the fire truck cannot drive in, or there are low-voltage wires, optical cables, etc. downstairs. Unable to stand up to save people, etc., in these cases, a lot of precious time will be wasted passively waiting for rescue, resulting in avoidable casualties and greatly reducing the chance of escape

[0004] In March 2009, the Beijing Fire Brigade purchased a building fire escape slide at a high price. It needs to use a ladder truck to support the bag slide, but it is limited by the height of the ladder truck, the road near the burning building, the wires, cables, and wind speed in front of the building.

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