Speed-limited downthrown device for heavy object or person

Abstract

The invention discloses a speed-limiting lowering device for heavy objects or personnel, which is composed of a main shaft with a square head at one end, an inner-toothed turntable is fixed on the main shaft, and a toothed speed-limiting slider is installed in the inner-toothed turntable. A frame is installed outside the upper internal gear turntable, and a pair of bearings are installed on the frame at both ends of the main shaft; a rope reel is installed at the other end of the main shaft. In this way, the equally divided helical teeth are fixed on the inner tooth turntable, and the toothed speed limit slider is set in the middle, and the rotation of the main shaft is limited by the guide groove in the inner tooth turntable and the two bearings fixed on the frame. In this way, when the inner-toothed turntable rotates in a circle, the toothed speed-limiting slider can only reciprocate in the radial direction, and each time the toothed speed-limiting slider moves, the toothed turntable can only move one tooth position, thereby Play the purpose of limiting the speed limit when heavy objects or people fall.

Description

technical field [0001] The invention relates to a mechanical speed-limiting device, in particular to a descender for automatic speed-limiting of heavy objects or personnel. Background technique [0002] With the progress of society and the continuous development of science and technology, people's living standards are also continuously improved. In the construction industry, the number of high-rise buildings in cities and towns is also increasing. Since the "9.11" incident on September 11, 2001, the fire prevention and rescue of high-rise buildings has become an important topic. At present, if a fire breaks out in a high-rise or low-rise building, the fire department can only use high-rise stairs to save people. The height of the stairs is extremely limited, and the speed of saving people is also slow, so it is not suitable for current needs. Its life-saving problem can only implement self-rescue under existing conditions for the personnel in the high level, otherwise jus...

AI Technical Summary

Problems solved by technology

Using this method to implement lifesaving, the longer the cloth bag, the larger the volume, and it can only be used in a range with a small number of layers, otherwise one or two people cannot operate it

At present, some people in the market use the deceleration mechanism used in machinery as a life-saving device for high-rise buildings, but its structure is relatively complicated, and its production cost is high, and its volume is also large.

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