Magnetic resistance type inching descent control device for fire scene escape

Abstract

The invention provides a magnetic resistance type inching descent control device for fire scene escape, and belongs to the technical field of escape tools. The device comprises a rotating shaft fixedto a wall surface, a reel rotatably connected to the rotating shaft, a traction rope wound on the reel and a binding assembly arranged at the free end of the traction rope, the reel comprises a plurality of damping assemblies which are uniformly distributed at the outer side of the rotating shaft in the circumferential direction, and each damping assembly comprises a backflow channel. Each backflow channel comprises a first straight section and a second straight section which are parallel to each other, each first straight section is located at the inner side of the corresponding second straight section, a plurality of iron balls capable of sliding along the backflow channels are arranged in the backflow channels, and permanent magnet balls with the same size as the iron balls are arrangedbetween the adjacent iron balls; and guide convex ribs located in the first straight sections are arranged on the rotating shaft. The descent control device has the advantages of being good in speedlimiting function, large in application range and the like.

Description

technical field [0001] The invention belongs to the technical field of lifesaving tools, and relates to a magnetic resistance inching slow descender for fire escape. Background technique [0002] When a fire breaks out in a middle and high-rise building, it is relatively difficult for people on the floor above the fire to escape, and it is easy to miss the best time to escape while waiting for rescue. The descending device is an important life-saving tool for the escape personnel to descend from the wall to the ground in the fire scene. The existing method often requires an external power supply to realize the occurrence and adjustment of the damping, and the external device is often prone to failure when a fire occurs. In the existing methods, there is also a descending device that performs damping and slowing down by means of no power supply, but it generally cannot realize the function of speed limit. Causing a fall accident during landing. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] When a fire breaks out in a mid-to-high-rise building, it is relatively difficult for people on the floor above the fire to escape, and it is easy to miss the best time to escape while waiting for rescue.

The descending device is an important life-saving tool for the escape personnel to descend from the wall to the ground in the fire scene. The existing method often requires an external power supply to realize the occurrence and adjustment of the damping, and the external device is often prone to failure when a fire occurs. In the existing methods, there is also a descending device that performs damping and slowing down by means of no power supply, but it generally cannot realize the function of speed limit. Causing a fall accident during landing

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