Permanent magnet variable length magnetorheological fluid and friction compound soft landing device

Abstract

The invention discloses a permanent magnet variable length magnetorheological fluid and friction composite soft landing device, which includes a casing, a transmission shaft, and a reel. The casing includes a horizontally arranged outer cylinder, and the two ends of the outer cylinder are A left side cover and a right side cover are respectively provided; the transmission shaft is arranged in the outer cylinder, and its axis line coincides with the axis line of the outer cylinder, and the left and right ends of the transmission shaft are separated from the left side cover and the right side cover respectively. The right side cover protrudes and is fixedly connected with the left side cover and the right side cover through bearings; the reel is sleeved on the left end of the transmission shaft and is fixedly connected with the transmission shaft, and an escape rope is wound on the reel; A magneto-rheological brake part and a friction brake part are arranged in the housing. The invention has the advantages of simple structure, no external energy source, controllable landing distance, good safety and comfort.

Description

technical field [0001] The invention relates to a high-altitude escape emergency equipment, in particular to a permanent magnet variable-length magnetorheological fluid and friction composite soft landing device. Background technique [0002] In recent years, there are more and more high-rise buildings in cities, and stairs or elevators cannot be used when an emergency such as a fire or the like occurs in a high-rise building such as an apartment house, a hotel or a hospital. In order to deal with such a situation, people have designed various emergency escape devices, such as the "emergency escape device" disclosed in Chinese patent CN 102946946 A, which mainly includes a guiding unit, a descending unit, a decelerating unit, a returning unit and a locking unit, It is mainly used for safe escape of people in high-rise buildings in case of fire. Chinese patent CN 102049110 A discloses a "high-rise escape device", which uses centrifugal clutches, backstops, gears and other me...

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Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, the purpose of the present invention is how to solve the problems of the existing escape devices, such as complex structure, poor landing safety, poor landing comfort, fixed landing distance, and poor adaptability, and provides a permanent magnet variable-length magnet. Rheological fluid and friction composite soft landing device, simple structure, no need for external energy, controllable landing distance, and good safety and comfort

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