Lifesaving descending principle and instructions

First, the principle of life-saving descent:

A lifesaving descent device is provided with a central axle shaft in the middle of the descending dash body. A center axle external tooth and a center wheel are arranged on the center axle. The external tooth of the central axle and the external teeth of the two sheaves are meshed and the auxiliary axle is connected to the shell. In the middle, there are three guide wheels below the sheave, which crosses the sheaves of the two sheaves to form a pair of motions with the guide wheels and lead out from the lower end of the body. Safety belts are provided at both ends of the rope respectively; The on-chip device has a friction block and is axially connected to the friction cover, and forms a friction pair with the inner wall of the friction cover; it is frictionally damped with the friction cover through the action of centrifugal force, so as to control the speed of the human body to descend. The structure is simple, and the volume is small and uniform. Repeated use of features. It is a tool for high-rise buildings such as hotels, office buildings, shops and residential buildings to escape.

Second, the role of lifesaving descent

When a building is in danger of a fire or danger, trapped personnel can use the descending device to automatically, uniformly and safely escape underground to the ground to escape from the scene, with many people reciprocating and circulating to escape. The main body of the host uses aluminum-magnesium alloy, and the core of the rope is used for aviation. Wire, plus high-strength polyester thread textile protection layer, with high tensile strength, soft and comfortable. The descent device has a multi-person reciprocating cycle escape function. Can save many people and property in a short time. The product is simple to install and easy to use. It is pre-installed at the fixed emergency exit of the building with a wall fixing ring or suspended on a solid window or balcony to escape. Children, the elderly, the infirm and the like need to be used with the help of others. Users do not need special training. After reading the instructions carefully, they can use the methods.

Third, the life-saving descent parameters (take GRS rescue descent as an example)

Static load: ≤ 1200kg;

Use load: 20kg --100kg;

Rated crew: 1 person;

Continuous downhill: 200 people;

Weight of host: 1.2kg;

Use height range: 15-180m;

Falling speed: 1m/s- 1.5m/s;

Detachment rope tensile strength: (Newton) ≥ 3822;

Length: 20 meters.

Fourth, lifesaving descending installation

1, mounted in the balcony or window sill above a factory standard expansion bolt rings;

2. Tighten the nut and tighten the eyebolt.

3. Put special safety rings into the expansion bolt rings;

4. Tighten the safety screw and see the installation diagram.

GRS rescue descent installation diagram 1

Fifth, the use and operation of lifesaving descent

1 , in case of escape conditions, choose the escape route that is most conducive to escape, and install centrifugal damping reducer .

Fixture diagram 1

2. Wear a seatbelt, tighten the chest strap (there are three types of full-body, half-body and child-type).

figure 1

figure 2

image 3

3 , hook the safety hook of the safety belt into the installed safety ring, and tighten the lock diagram of the safety lock;

Insurance lock diagram

4 , to view out of the window to choose a smooth escape route to throw the wire rope around the roller to the ground;

5 , check the seat belt under the premise of wearing a firm wire rope to climb out of the window, facing the wall, and then slowly release the wire rope with both hands, along with its steady decline, will reach the ground when the legs slightly curved to prevent ankle sprain see schematic.

Sixth, warning

1. Make additional protective measures during drills;

2. Do not open the centrifugal damping reducer assembly without permission;

3 , do not disassemble the caster wheel around the complex wire rope, resulting in failure of the descending device;

4. Children under the age of 18 cannot use the descending device alone;

5 , the maximum load does not exceed 100kg;

6. Do not disassemble the pressed parts covering the two ends of the wire rope.

Seventh, maintenance

1. This product should be inspected frequently. The friction plate must be replaced in time.

2. This product is placed in a clear escape exit position according to the fire protection standards;

3 , This product can not be placed in a corrosive gas environment for a long time, keep the ventilation dry.

This article is edited and compiled by China Rescue Equipment Network. Please indicate the link.