What is the use method and principle of the descender?
Release Time:
2022-04-07
The escape descender is a building fire protection device that enables the user to automatically descend at a speed through its own weight and can be used back and forth. As an emergency escape and evacuation equipment, the descender has been promoted all over the world for more than half a century. It helps people escape from windows and balconies when corridors in buildings are blocked by fire or smoke and firefighters do not arrive. But now, its popularity varies widely across countries around the world.
The escape descender is a building fire protection device that enables the user to automatically descend at a speed through its own weight and can be used back and forth. As an emergency escape and evacuation equipment, the descender has been promoted all over the world for more than half a century. It helps people escape from windows and balconies when corridors in buildings are blocked by fire or smoke and firefighters do not arrive. But now, its popularity varies widely across countries around the world.
The descender is a kind of fire fighting equipment, which is mainly used for the escape or rescue of high-rise buildings. It can only work by the weight of the human body, without the help of external force. So, what is the use method and principle of the slow descender? Next, let us find out with the editor.
The descender is usually an escape device for small and high-rise residents in the event of a sudden fire. It mainly includes escape ropes, centrifugal descenders and belts, and brackets installed indoors. Fire fighting equipment mainly works for us. Only by raising awareness of firefighting can we truly deal with the arrival of various disasters.
1. The use of the descender
1. Take out the descender and hang the hook on the pre-installed fixing frame or any stable support.
2. Throw the rope reel to the ground outside the building and loosen the rope.
3. Put the belt under the armpit, and then tighten the slider to the appropriate elastic position.
4. Don't grab the ascending and descending rope, but grab the belt and slowly land towards the wall, the speed reducer will send the personnel to the ground at a constant speed.
5. After landing, release the slider at a constant speed, take off the belt and leave the scene.
6. The reducer can be used alternately up and down, which can save many lives in a short time.
Second, the principle of the slow-down device
For the rescue descender, there is a central axis in the middle of the descender body. The central shaft is provided with external teeth and the central wheel of the central shaft. The external teeth of the intermediate shaft and the external teeth of the two wheels form a meshing secondary shaft, which is connected with the casing. There are three guide pulleys under the sheave. The wire rope passes through the grooves of the two pulleys and forms a kinematic pair with the guide pulley, which is drawn out from the lower end of the body. Belts are installed at both ends of the wire rope; the center wheel of the internal device is provided with a friction block, which is axially connected with the friction cover to form a friction pair with the inner wall of the friction cover; centrifugal force makes it generate frictional damping with the friction cover, thereby controlling the falling speed of the human body. The utility model has the advantages of simple structure, small volume, slow descending speed, and can be used repeatedly. It is a self-help tool for high-rise buildings such as hotels, office buildings, shops, and residential buildings.
The above is the information on the use method and principle of the descender. Here, I would like to remind everyone that in our lives, accidents happen from time to time. It is very important for us to have some escape knowledge.
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