Ladder hinged with stops. Suspended ladders: general information, calculation, installation. Calculation of the dimensions of the stairs

Manual fire ladders LP, LSh, L-3k designed to lift firefighters to the upper floors of burning buildings, as well as to rescue people caught on fire in the premises of storey buildings.

Fire rescue rope VSP

Fire rescue rope (VPS) is manufactured according to the technical specifications TU-8153-002-26273020-96 and is designed to ensure the implementation of emergency rescue operations when extinguishing fires and eliminating emergencies indoors and outdoors at temperatures environment from minus 40 to 50 C.

The UPS is made of polyamide rope, the ends of which are sealed in metal thimbles and protected by heat-shrinkable sleeves.

Parameter name

Norm

1. Maximum allowable static load, N (kgf)

3. Length, m
VPS-30
VPS-50

30+0,5
50+0,5

4. Weight, kg, no more
VPS-30
VPS-50

5. Diameter, mm

6. Relative elongation when exposed to a load of 75% of breaking strength, %

7. Resistance to hazardous fire factors, s:
exposure at a temperature of 600 0C
contact with a steel rod heated to 450 0С
open flame contact

10
30
30

8. Dynamic strength

Holding a 100 kg load after it has fallen from a height of 2 m

Hinged rescue ladders "ССС" from 6 to 21 meters

Hinged rescue ladder "SSS" is designed for self-evacuation of people from premises in emergency and emergency situations, in case of fire, in case of exposure to aggressive environments, before the arrival of rescuers. A small, simple and reliable rescue kit for evacuating people from buildings is brought into working position in a minimum time.
Evacuation of people on rescue ladders "ССС" does not require special training (transition to the scheme of use):

For the manufacture of a hinged rescue ladder "SSS" (TU: 4854-001-23076997-99), crossbeams made of high-quality selected wood and a high-strength polyamide cord (1450 kg at break) were used. Component materials processed flame retardant. Recommended length up to 15m. Working load 320 kg. Breaking load 1000 kg*. Must be equipped with special bags with identification patches-instructions. During the last tests with a load of 1000 kg, there was no damage. Typical failure: shearing the crossbar under a load of 1200 kg without breaking the cord.

Hinged rescue ladder

Hinged rescue ladder "LNS-00" (the number after the abbreviation means the length of the ladder in meters) provides the possibility of emergency descent of people from the window (balcony, loggia) of the building to the ground or to the lower floors in case of an emergency.

LNS delivery set: ladder, carabiner, bracket, stowage bag, passport. For an additional fee, a metal container is supplied for storing the ladder at the hanging point.

The ladder consists of two flexible bowstrings (side cables) made of galvanized steel rope, on which metal steps are fixed. At the top of the stairs, the bowstrings are brought together into a rope ending in a loop. This design allows you to attach the ladder with a carabiner not only to the regular attachment point (bracket), but also to a suitable strength element of the building structure.

The steps of the stairs have a grip-improving coating. The lower step is colored (red or yellow) for easy attachment and folding of the LNS.

On part of the steps, plastic stops are installed at regular intervals, designed to divert the LNS from the wall, which increases the safety and convenience of people descending.
The bracket is mounted on the wall and is designed for hanging the ladder.

In standby mode, the ladder in the folded position is in a stowage bag or a metal container.

8 standard sizes of a ladder are made.

Parameter name

LNS-6

LNS-9

LNS-12

LNS-15

LNS-18

LNS-21

LNS-24

LNS-29

Ladder length, m

Floor of the building corresponding to the length of the stairs

Ladder weight, kg

Overall dimensions in a bag: length, width, height, mm

430
300
300

430
300
300

430
340
440

430
340
440

430
340
500

430
340
500

430
340
620

430
340
620

Ladder width, mm

Step diameter, mm

Step pitch (distance between steps), mm

Rescue rope ladder LAN

The name of indicators

Rated values

5 - 19 m at 0.5 m intervals, 19 - 30 m at 1 m intervals

Step diameter

Ladder width

Hinged rescue ladder with stops (LNSU-V) rope

Difference from LVS: Presence of Stops Steps are made of aluminum pipe D 28 mm Step step 350 mm

Rescue rope ladder with chain (LVSTs)

"A reliable and easy-to-use means of rescue, brought into working position in a minimum time. Evacuation of people using rescue ladders does not require special training. Simultaneous evacuation of up to 4 people is allowed. ensuring reliable fastening for any load-bearing structure of the building.

The steps of the stairs are made of solid hardwood, treated with a fire-retardant composition. Complete with carabiner and hammer.

A distinctive feature of the LVCC is the upper part, free from steps (1.2 m), and the bowstrings up to the second step are made of chain , which allows the use of ladders for evacuation from a burning room.

The name of indicators

Rated values

The length of the chain string before connecting to the rope string

6 - 30 m at intervals of 1.5 m

Step diameter

Ladder width

Rescue equipment kit "KSS"


Basic equipment KSS-30, (KSS-50)

Name

Quantity

1. Brake device

2. Fire rescue rope VPS-50 (VPS-50) in a case

3. Hanging system "kerchief"

4. The suspension system is universal

5. Capron halyard 3 m

6. Special gloves

7. Carbine "Iremel 2200"

8. Packing bag

9. Passport

Slip Tow Truck


Slip Tow Truck- non-automatic device for descent from limited heights.

  • Two trained people (professional firefighters) are required to work with a sleep tow truck and bring it into working condition.
  • The work of an unprepared person with a slip tow truck is unacceptable.
  • The speed of descent on the slip tow truck is regulated from the evacuation zone (possibly a fire) or by a person descending independently (there is a possibility of a person hanging in a smoky environment).
  • The descent on the slip tow truck runs along the line of windows, which increases the possibility of burns, damage from falling glass fragments, etc.
  • The device is not intuitive for proper use.

Model range of evacuation systems "Slip-Evacuator"

Model "OFFICE"

Convenient and compact system for storage in the table, provides, in case of need, emergency self-evacuation. Specialized for self-evacuation of people who do not have their own suspension system (fireman's belt, rescue harness, etc.). The presence of a special rescue triangle in the system will ensure a comfortable descent. Descent control can be controlled independently or from the ground. Many buildings of the Ministry of Internal Affairs of Russia are equipped with this system.

The maximum height of the descent is up to you. The system is housed in a shoulder bag.

Model "MINI SWING"

Designed for mass rescue. The model is specialized and especially suitable for use in self-evacuation and evacuation of groups of people (or individuals) who do not have professional skills.

The management of the kit is intuitive and accessible after familiarization in the minimum required volume. A distinctive feature of the system is a uniquely low force (1-2 kg) applied during the control process. In this case, control can be carried out both by the descender himself and by another person from the evacuation zone or from any place along the descent route, including the landing area.

The system is stored in a wearable bag (backpack) and can be taken to a hazardous area if necessary. But, the best option- permanent placement in the proposed places of mass evacuation, equipped with special places for attaching the kit.

Model "COMPACT"

The COMPACT model is specialized for self-evacuation of professionally trained fighters of the fire-fighting and rescue service and other specialized units.

The set is a means of individual use. In this case, it is assumed that the fighter has his own suspension system (fireman's belt, rescue harness, etc.) with a connecting carabiner.

The system uses a unique, specially designed working rope with a diameter of 7 mm, which has a "Kevlar" sheath, which provides increased strength, resistance to mechanical damage and abrasion, high temperatures, open fire, aggressive liquids, etc.
The kit is notable for its particularly small dimensions, which allow it to be worn on a belt or in a pocket of combat clothing, and weighs only 800 grams, which for the first time made it possible to provide every firefighter (rescuer) with a life-saving equipment.
At the request of the Customer, the length of the working rope can be changed.

Model "SWING"

Specialized for use in the evacuation of large groups of people. It is possible to use for the evacuation of material assets. The kit is a means of collective use and allows evacuation in a continuous-cyclic mode, combining the descent of a person (cargo) with the lifting of a suspension system released after the descent of the previous person (cargo).

The kit is placed in a shoulder bag (backpack) and can be delivered to the danger zone if necessary or be permanently installed in advance in the expected places of mass evacuation. The system is controlled from the evacuation zone. The system has a wide range of applications on helicopters, oil rigs, in buildings, on decks of ships. It is mobile and easy to use, does not require additional funds for deployment and operation. Guaranteed operation of the system for at least 100 descents.

"ALPHA"- specialized, semi-automatic, with manual control by the user, with the function of automatic termination of the descent when control is stopped or lost;

"KLUVIK"- universal type, with manual control, continuously carried out by the user during the descent or, from the landing site, by the operator.

The system is housed in a shoulder carrying case.

Self-rescuer Bars


The Bars self-rescuer is an automatic rope-release device designed for emergency evacuation of people from buildings and other high-rise structures during a fire or other emergency.

  • To use the self-rescuer does not require training and special skills.
  • The Bars self-rescuer does not require any adjustment (regardless of the person's weight) and maintains a constant descent speed.
  • During the descent of the first person, a second rescue scarf is raised from the ground to descend the next.

Technical characteristics of the self-rescuer:

  • the speed of descent on the self-rescuer is equal to the speed of the elevator and is 1 m/s
  • mass of rescued person up to 200 kg
  • the height of the descent is up to 300 m, at the moment it is possible to descend from the roof of any skyscraper in the Russian Federation on a self-rescuer.
  • the alert time is no more than 60 seconds, even for an unprepared person.

HINGED RESCUE LADDER "SSS": for the manufacture of used crossbeams of high-quality selected wood and high-strength (1400kgs) polyamide cord. Completing materials are treated with flame retardant composition. Mandatory complete set of special bags with identification stripes-instructions. The complete set a crossbeam with an emphasis wheels is possible.

Differ in the lowest price at invariably high reliability and quality.
+ Possibility of use at low temperatures.

MOUNTED RESCUE LADDER "SSS-M": metal rungs and steel rope are used for manufacturing. Mandatory special equipment. bags with identification patches-instructions and stops-wheels.

The most reliable and easy to use rescue kit

The price characteristic is the most favorable of the analogs existing on the market

HINGED RESCUE LADDER "SSS-K": has a combined design: the initial 1.5 m of working length is made of a metal cable and metal rungs, the rest of the working length is made of high-strength polyamide cord and wooden rungs; reliable fastening of structural parts to each other is ensured by a metal thimble . It combines the advantages of two types of rescue ladders: protection from fire and the ability to use at low temperatures.

Mandatory special equipment. bags with identification patches-instructions. The complete set a crossbeam with an emphasis wheels is possible.

Option 1: Delivery in Moscow and the nearest suburbs

Within the Moscow Ring Road - 1000.00 rubles (carrying capacity up to 150 kg and cargo volume up to 0.3 m3).
Outside the Moscow Ring Road 1000r + 30r/km (carrying capacity up to 150kg and cargo volume up to 0.3m3).

Cost of delivery: RUB 1,000.00 Option 2: Shipment by transport company

We ship products to all regions of Russia and neighboring countries.
For you, we will arrange shipment by air, road or rail at the request of the client.

We draw your attention to the fact that we provide free delivery of products to the Moscow terminal of a transport company - with a carrying capacity of up to 150 kg and a cargo volume of up to 0.3 m3. In the event that the volume and weight exceed these dimensions, self-delivery will be carried out from the transport company chosen by you.

Shipment by the transport company is made only after 100% payment.
For individuals:
- After payment of the issued invoice ("Invoice for payment No....") without VAT.
For legal entities:
- After payment of the issued invoice ("Invoice for payment No....") including VAT (18%).

Payment for the services of air, railway and transport companies is paid by the client independently upon receipt of products from the transport company.

To prevent the rescue of victims of a disaster from becoming another accident, the rope fire escape has a breaking weight of 1000 kg and is treated with fire-fighting agents. For a quick descent or ascent, the set should be as light as possible, but at the same time durable. So that all people can safely descend to the ground.

Rope ladder for evacuation - a reliable descent in a critical situation.

You can make such a ladder yourself, it does not require costs or special knowledge. You will need wooden blocks and a strong rope (rope). Take the rope from any material - linen, cotton or synthetics, it doesn't matter. And the tree will have to be processed so that it does not rot and there is no fungus. The advantage is that you yourself can choose what length you need and adapt to different purposes. You can make one short for children, long for chores. Work on the roof, in the well, for water transport - everywhere it will be useful to have a rope ladder. Its practicality and ease of use speaks for itself. No wonder this device is used for descents and ascents during evacuation.

Rescue ladders are auxiliary equipment designed for urgent evacuation of people in emergency situations from high-rise levels of residential buildings. Rescue hinged ladder is a fairly effective device for rescuing people in case of emergency from a height of up to 15 m.

Hinged type rescue ladder, unlike other manual devices of this purpose, must be constantly stored in the "standby mode" in a special box, near the provided fixed attachment points. In the event of an emergency, it must be ready for use in order to ensure the evacuation of people from the emergency zone.

Construction types

According to the technical design, attachments are of the following designs:

  • rescue rope ladder- twisted bowstrings made of synthetic or natural materials; steps - wooden or metal;

  • cable car- bowstrings are used from a metal cable, rigidly interconnected with the help of wooden or metal crossbars;

  • chain- a ladder, in which chain links are used as bowstrings, firmly connected into a monolithic structure;

  • tape- a fixture made of steel or synthetic tape;

According to the method of application are divided:

  • fixed hinged ladders- are stored in a special container inside the building and are rigidly mounted, in the place designated for them, in case of an emergency;
  • hinged front- perform the same functions as the previous structures, only stored and attached outside, on the facade of the building.
  • heat-resistant version- designed for emergency evacuation of people from the area of ​​​​possible impact on the structure of the stairs of open fire and high temperatures.

Fixture Models

In this chapter, we will look at the most commonly used designs, and in addition to this information, watch the video in this article.

Rope devices

The most demanded and sufficient equipment on metal cables is the hinged rescue ladder USL "Chance".

The product is made of refractory heat-resistant material, standardized length from 6.0 to 30 m. The rigid design of the device will allow for the safe evacuation of people from the floors of a burning building.

The design consists of the following elements:

  • galvanized steel cable Ø 5 mm is used as bowstrings;
  • round metal steps Ø 25 mm;
  • horizontal stops Ø 8 mm, fixing the device at the required distance from the wall of the structure.

Fastening is carried out using anchor devices and carabiners installed at the top of the bowstrings, which are pre-equipped on the walls of the building.

With a similar design and with the same characteristics, there is another well-known device - this is the CCC hinged ladder (see photo).

rope structures

The class of rope structures includes equipment marked LAN or LNSP. Rope rescue ladder LAN can be used for evacuation of people in case of fires in places where there is no open flame, during repair and construction work, and also as auxiliary equipment on a personal plot.

Bowstrings are made of synthetic or natural material; steps can be made of wood or light aluminum alloy. For removal from the walls of the building, the device is equipped with stops.

The bowstrings of the stairs at the top, at a distance of 80 cm from the first step, are assembled into a loop and fixed with a carabiner. This makes it possible to use a single anchor to secure the structure or, in some cases, use a winch to increase the lifting height.

The rescue ladder winch can be made in the form of a portable manual mechanism or be with an electromechanical drive equipped with a gearbox. The second option is usually used by the mine rescue service in the coal industry (see photo).

Product Features:

  • step Ø 32 mm;
  • string - polyamide rope Ø 8 mm;

Operational Requirements

All the designs presented above, in special cases, provide for their use by ordinary citizens - with their own hands, without the participation of specially trained personnel.

Therefore, below are instructions and basic requirements for ladder systems of this type, which must be used at the time of selection and operation of fixtures:

  1. All surfaces attachments must not have sharp parts, a burr that can cause harm to health or create an obstacle for a person to move up the stairs.
  2. Overall dimensions must comply with:
  • width - >250 mm;
  • length - no more than 15 m;
  • step pitch - 350 mm or less;
  • weight -
  1. The size and configuration of the cross section of the steps must guarantee the convenience and safety of movement. The recommended cross-sectional size of the crossbars is 26 mm or more.
  2. The steps should be located strictly horizontally and have a right angle with the surface of the bowstring.
  3. Rope rescue ladder and other similar structures must be equipped with stops 110–220 mm long.
  4. The materials from which the equipment is made must ensure its trouble-free operation within the temperature range from -40°C to + 40°C.
  5. The working resource of devices should be at least 50 cycles.

Tips: the materials used in the manufacture of stairs must be corrosion resistant and covered with protective and decorative paintwork materials according to the regulatory requirements for each specific material.

Test and control methods

Inspection of life-saving equipment is carried out by the person responsible for fire safety object at least once every three months.

Control should be carried out according to the following parameters:

  • checking the packaging and completeness of equipment;
  • the presence of damage to the surfaces of the structure;
  • compliance with the standardized length;
  • width;
  • step size;
  • the size and shape of the crossbars;
  • fixture weight;
  • alignment of the horizontal treads;
  • the presence and safety of stops.

More in-depth studies are carried out in the laboratory using special equipment:

  1. Checking the value of residual deformation is carried out using a load of 150 kg suspended on the selected step, close to the bowstrings, for 120 s. The dimensional deviation of the part under test shall not exceed 2% of the width of the fixture.

  1. Shear tread test. A static weight of 150 kg is suspended on one side close to the bowstring. The check is considered successful if the steps withstood the applied load without changing shape and breaking the structure for 120 seconds.
  2. Resistance to high temperatures (for heat-resistant equipment). Tests are carried out in thermal chambers or on specialized stands. Heat-resistant hinged structures must be operable under the following conditions:
  • have a stable state for 180 seconds when exposed to devices with a temperature of 600 ° C;
  • within 30 seconds - temperature 450°С;
  • exposure to an open flame - ensuring operability within 30 seconds.
  1. Strength test. The test sequence corresponds to the first point, with the exception of the static load, which in this case is 360 kg. The design after the tests should not have stretching, distortion, etc.

The rescue ladder must always be in working condition, which characterizes the ability of the equipment to perform the assigned tasks, and its serviceability must comply with the design and regulatory documentation in accordance with GOST 27.002-2015. The price of the committed violations in relation to the operation of this equipment is the disruption of the rescue operation and the death of innocent citizens.

Loading...Loading...