Slow descending device for high-rise building

Abstract

The invention relates to an escaping device and particularly relates to a slow descending device for a high-rise building. According to the technical scheme, the slow descending device comprises a shell, a main shaft, a main pulley wheel, a small gear, a large gear, a secondary shaft, a support, a connecting rod mechanism and a braking device, wherein the main shaft and the support are fixedly mounted on the shell; the secondary shaft is in rotary connection with the support; the braking device comprises a braking drum, a braking shoe, a friction sheet, a spring and a cam; the main pulley wheel, the small gear and the braking drum are mounted on the main shaft; the main pulley wheel, the small gear and the braking drum are connected together in series through a bolt and a nut; the large gear is fixedly mounted on the secondary shaft; the large gear is engaged with the small gear; the connecting rod mechanism comprises a connecting rod I, a connecting rod II and an L-shaped rod, which are connected in sequence; the connecting rod I is fixedly mounted on the secondary shaft; the L-shaped rod sleeves a square head of the cam; and the main pulley wheel is used for connecting a fire-fighting rope. According to the slow descending device for the high-rise building, a fire-fighting rope transportation manner is combined with a fire-fighting climbing aerial ladder truck, so that people can be rapidly transferred; and the escaping efficiency is high and the slow descending device is simple in structure and is safe and reliable.

Description

technical field [0001] The invention relates to an escape device, in particular to a slow descending device for high buildings. Background technique [0002] In China, the escape products on the market include: high-altitude escape device, high-altitude escape airbag, wind power high-altitude escape rappel device, fire escape ladder (suitable for low-rise buildings), etc. The easiest to popularize and the easiest to play a good role in high-rise building fires is the high-altitude descending device. At present, the slow-down escape products mainly include slow-down ropes, downhill pipelines, elevators, and gliding aircraft. [0003] Among them, the downhill ropes are easy to install, but the damping in the initial state is small, and they slide down at the maximum speed. The control can only slow down the downspeed by increasing the damping. Hidden dangers, poor safety and reliability, and most descending devices do not have the function of automatic return, which can only...

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Problems solved by technology

[0003] Among them, the downhill rope is easy to install, but the damping in the initial state is small, and it slides at the maximum speed. The control can only slow down the speed by increasing the damping. Hidden dangers, poor safety and reliability, and most descending devices do not have the function of automatic return, which can only meet the needs of one person's escape. It needs to be used in the case of escape; the downhill pipeline type has a long history, is suitable for collective escape, and is more comfortable, but its structure and installation are more complicated, and requires frequent maintenance; elevators, with power drive and control, can be used for multiple Evacuation of people on the floor, but it is not available when the power system is unreliable in emergencies; gliding aircraft type escape equipment, which can be applied to super high-rise buildings, has high controllability, but has high technical content and high cost. few people

[0004] Abroad, Japan's stainless steel spiral outdoor staircase has a simple structure and strong practicability, but it requires a large space and cannot be effectively isolated from the smoke and heat. The cost is high and it cannot be fully applied to the escape and evacuation of high-rise buildings; Israel’s escape cabins have relatively good effects and high safety, but the installation process is complicated, time-consuming, laborious, difficult to maintain, and expensive; the chain guide escape device in the stairwell in Spain does not require power, but has strict requirements on the accuracy of the track. Big, difficult to construct

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