Permanent magnet change length magnetorheological fluid and friction composite soft landing device

Abstract

The invention discloses a permanent magnet change length magnetorheological fluid and friction composite soft landing device. The permanent magnet change length magnetorheological fluid and friction composite soft landing device comprises a shell, a transmission shaft and a coiling block. The shell comprises a horizontal outer cylinder. A left side cover and a right side cover are arranged at the two ends of the outer cylinder respectively. The transmission shaft is arranged in the outer cylinder, and the axis of the transmission shaft coincides with the axis of the outer cylinder. The left end and the right end of the transmission shaft stretch out of the left side cover and the right side cover respectively and are fixedly connected with the left side cover and the right side cover through bearings. The coiling block is arranged at the left end of the transmission shaft in a sleeving manner and fixedly connected with the transmission shaft, and an escape rope is wound on the coiling block. A magnetorheological brake part and a friction brake part are arranged in the shell. The permanent magnet change length magnetorheological fluid and friction composite soft landing device is simple in structure, energy does not need to be additionally added, the landing distance can be controlled, and safety and the comfort level are high.

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 CN102946946A, which mainly includes a guide unit, a descending unit, a deceleration unit, a return unit and a locking unit. People in high-rise buildings escape safely in the event of a fire. The "high-rise escape device" disclosed in Chinese patent CN102049110A uses centrifugal clutches, backstops, gears and other mechanisms or parts to form...

AI Technical Summary

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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