Gravity self-adaption constant-speed forced landing device for high-rise fire disaster escaping

Abstract

The invention relates to a gravity self-adaption constant-speed forced landing device for high-rise fire disaster escaping. The gravity self-adaption constant-speed forced landing device for high-risefire disaster escaping comprises an outer shell, an inner shell which is embedded into the outer shell and is in sliding connection with the outer shell at least in one direction, an elastic part, abraking part and a pull rope brake part. The elastic part is connected with the inner shell and the outer shell so that the acting force opposite to the sliding direction of the inner shell and the outer shell can be exerted. The braking part comprises a movable part used for transmitting torque and a brake part used for exerting reverse acting force on the movable part. The brake part and the movable part are not connected to the outer shell or the inner shell at the same time, and therefore the brake part and the movable part can relatively move and / or deviate along with the sliding of the inner shell and the outer shell, and the acting force between the brake part and the movable part is changed. The pull rope brake part is provided with at least one rotating component which is used forexerting reverse acting force on pull ropes passing through the pull rope brake part. The rotating components are in sliding friction-free connection with the pull ropes so that the rotating angularspeeds can correspond to the speeds of the pull ropes passing through the rotating components in a one-to-one manner.

Description

technical field [0001] The invention relates to the field of security technology, in particular to a uniform-speed forced landing device for self-adaptive gravity high-rise fire escape. Background technique [0002] At present, the traditional high-rise fire escape forced landing device mainly includes two kinds of fixed resistance type and resistance manual adjustable type. Among them, the fixed resistance type high-rise fire escape forced landing device has a fixed resistance when the rope is pulled out. This method cannot well adapt to the different weights of the forced landings, which will lead to slow decline for those with small weights and slow down for those with heavy weights. The rapid descent, or the lack of gravity due to the small body weight directly lead to the failure to make a forced landing. However, the resistance manual adjustable high-rise fire escape emergency landing device generally needs to set the resistance when the rope is pulled out according t...

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Problems solved by technology

Among them, the fixed resistance type high-rise fire escape forced landing device has a fixed resistance when the rope is pulled out. This method cannot well adapt to the different weights of the forced landings, which will lead to slow decline for those with small weights and slow down for those with heavy weights. The rapid descent, or the lack of gravity due to the small body weight directly lead to the result of being unable to make a forced landing

The resistance manual adjustable high-rise fire escape emergency landing device generally needs to set the resistance when the rope is pulled out according to its own weight, or often requires two people to cooperate to complete it, one is tied to the rope to descend, and the other manually controls the rope in real time. Although this manually adjustable high-rise fire escape forced landing device can adjust the resistance when the rope is pulled out according to the weight of the forced lander, so that the landing speed of the forced lander can be controlled to a certain extent, but in the emergency of a fire Under such circumstances, people usually cannot make accurate judgments and quickly operate equipment that is not frequently used, which makes the escape efficiency low and easily delays the timing of escape in a fire

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