Axial compression slow descending device

Abstract

The invention relates to an axial compression slow descending device which is characterized by comprising a rack, a rope and an axial compression mechanism. The rope penetrates the axial compression mechanism, the axial compression mechanism comprises a rotary disc and a compression piece, the rotary disc is rotationally arranged on the rack, the peripheral side of the bottom of the rotary disc extends out of a supporting table, the rope surrounds the periphery of the rotary disc in the peripheral direction of the rotary disc and is arranged on the supporting table, the compression piece comprises a compression shell and a compression roller, the compression roller is rotationally arranged on the compression shell, the compression shell can be fixed in the axial direction of the rotary disc, and the compression roller presses the rope to be in contact with the supporting table in the axial direction of the rotary disc; and when the rotary disc rolls on the rope, the rope drives the compression roller to rotate. The axial compression slow descending device has the beneficial effects of being simple in structure, small in abrasion, less in generated heat, safe, reliable and long in service life.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to a slow-down device. Background technique [0002] With the rapid expansion of my country's urban scale, people's living environment has basically turned to high-rise buildings. And the population density is getting higher and higher, especially in public places, a high-rise building disaster accident, especially a fire accident, may cause a large number of casualties. However, the rescue and escape measures are very lagging behind, and it has almost become a bottleneck problem that is difficult to solve. [0003] At present, there are basically no special fire and earthquake escape devices on high-rise buildings in our country. When force majeure such as fire and earthquake occurs, the elevator will be prohibited from being used. Fire elevators can only barely provide firefighters or carry fire-fighting equipment. Relying on the evacuation stairs to walk downstairs, the evac...

AI Technical Summary

Problems solved by technology

Regardless of the above-mentioned method to ensure the static friction between the rope and the turntable, there are always the following problems: 1. During the lifting process of the slow descending device, there is sliding friction between the pressing member and the rope, and the sliding friction and Static friction is proportional to the relationship. On the one hand, the existence of the sliding friction will generate a lot of heat, which poses a safety hazard. On the other hand, long-term friction will make the rope and the pressing parts wear and tear, which also poses a safety hazard.

2. The pressing parts are generally fixed. As the use time increases, the pressing parts will wear out continuously, the pressure will decrease, and the static friction will also decrease. On the one hand, the load-bearing capacity of the slow-down device will be reduced. Risk of sudden change from static friction to sliding friction

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