RU185728U1 - Folding shelter for operational isolation of radio-controlled explosive devices - Google Patents

Abstract

Folding shelter for operational isolation of radio-controlled explosive devices, in the form of a screen of flexible camouflage material, edged around the entire perimeter with flexible and durable material, made instead of a flexible camouflage material with a layer of fabric woven with two types of threads: threads from a mixture of staple fibers of polypararamide and steel, and threads from a mixture of polypar - and polymetharamide fibers, spirally braided with stainless steel wire with a diameter of 0.04 ÷ 0.07 mm, contains a weighting agent around the entire perimeter a lead cord and a double weighting contour from the same fabric with pockets at the corners, one along the edge of the cape, the second at a distance of 15 cm from the edge. A weighting cord weighing 50 grams per meter is inserted along the edge of the shelter. Shelter is folded "accordion" with a crease width of 15 cm and fits into a cylindrical fabric cover with handles (for storage and carrying). 6 ill.

Description

The technical field to which the proposal relates

The utility model relates to the field of devices and methods that ensure the safety of explosive works and the disposal of explosive devices, and more particularly, to shelter devices to prevent radio-controlled detonation of explosive charges and can be used in military affairs and in the actions of special anti-terrorist security units.

State of the art

A device is known for collapsible explosion localizer in the shape of a square formed by four vertical rigid hollow walls made in the form of expandable flaps filled with energy-dissipating filler and provided with loops for operational isolation of explosive devices (RF patent 2564463, IPC F42D 5/04, published on 10.10.2015) .

Known folding shelter for masking objects and isolation of radio-controlled explosive devices containing a protective coating made of flexible radar absorbing materials with resistive properties, and mounting devices for fixing it over the object. The folding shelter has the shape of a tent, painted in a protective color, and the broken side surface of the shelter consists of angles extending to the bottom directed at an angle to each other, the edges of which are formed using mounting devices, and the surfaces of the faces are not parallel to any of the surfaces of the object, and the width of each more than the maximum electromagnetic wavelength of the working radio range was selected from the faces (RF patent 70358, IPC F41H 3/00, published. 01.20.2008).

Known folding shelter against the remote initiation of cumulative grenades, which contains curtains of metal mesh with different mesh sizes and a steel screen with a thickness of at least 0.5 caliber bullets. The steel screen has a superhard face layer with a hardness of at least 85 HRA, the thickness of which is 0.3-0.7 of the total thickness of the screen (RF patent 2204790 IPC F41H 5/00, published May 20, 2003).

A device for a folding protective-camouflage screen, which is a folding shelter for operational isolation of radio-controlled explosive devices, consisting of a flexible complex coating placed on a convertible collapsible frame having a layered structure, the upper layer of which is free, without fixing, laid on the lower layer, is made of camouflage material, and the bottom - from fastened together by means of flexible loops of strips of wire braided metal mesh, edged around the perimeter of it with a flexible and durable material, while the metal mesh is made with a mesh size of not more than 30 mm from a wire with a thickness of at least 2.5 mm and a mass of at least 3.0 g / m (RF patent 2476810, IPC F41H 3/00, priority 01/31/2009). Edging around the general perimeter of the metal mesh with flexible material with fixed eyes ensures the possibility of its deployment (coagulation), without engagement, and the fastening of the strips together when assembling the protective element of the flexible complex coating on the frame, which reduces the time of the working installation of the screen.

The disadvantages of the known device is the insufficient protection of the shielded object from remote detonation of radio-controlled explosive devices operating in the radio frequency range from 30 MHz to 18 GHz, determined by the EMR screening coefficient, the complexity and duration (impossibility of prompt) mounting the screen as a shelter over an explosive object.

The technical problem, which this technical solution is aimed at, is to increase the protection efficiency of the shielded object from remote detonation of radio-controlled explosive devices operating in the radio frequency range from 30 MHz to 18 GHz, which is determined by the EMR screening coefficient, simplifying the design and reducing the deployment time (mounting the screen as shelter) over an explosive object.

The essence of the proposal

The problem is solved in that in the known device folding shelter for operational isolation of radio-controlled explosive devices made in the form of a screen made of material edged around the entire perimeter, shelter from a layer of fabric woven with two types of threads: threads from a mixture of staple fibers of polypararamide and steel, and threads from a mixture of polypara- and polymetharamide fibers, spirally braided with stainless steel wire with a diameter of 0.04 ÷ 0.07 mm, contains a weighting cord of lead and double as a fringing around the entire perimeter second weighting circuit of the same fabric with pockets at the corners.

The utility model is illustrated by examples of execution and layout diagrams of device parts:

FIG. 1. The composition (device diagram) of the fabric threads for the manufacture of a folding shelter for the operational isolation of radio-controlled explosive devices.

1 - stainless steel wire;

2 - fibers from polymetharamide;

3 - fibers of polyparaaramide;

4 - step turns of stainless steel wire spiral shape.

FIG. 2. A view of a double weighting contour of a folding shelter for operational isolation of radio-controlled explosive devices.

5 - the first weighting circuit;

6 - the second weighting circuit;

7 - weighting filler.

FIG. 3. Type of pockets at the corners of a folding shelter for operational isolation of radio-controlled explosive devices.

8 - overall reflective marking;

9 - pocket;

FIG. 4. A view of the luminous marking of the dimensions of the folding shelter for the operational isolation of radio-controlled explosive devices.

FIG. 5. General view of a folding shelter for operational isolation of radio-controlled explosive devices.

FIG. 6. Layout of a folding shelter for operational isolation of radio-controlled explosive devices.

Examples of the execution of the device yarn

Example 1. Folding shelter for operational isolation of radio-controlled explosive devices, in the form of a screen measuring 2700 × 2700 × 1 mm from fabric “Screens 240” art.96401 manufactured by LLC “Tchaikovsky Textile Company” (version manufactured by LLC “OKB Berkana”) woven with two types of threads : threads from a mixture of staple fibers of polyparaaramide and steel, and threads from a mixture of fibers of polypara- and polymetaramide, braided in a spiral with a pitch of 1.5 mm with 316L stainless steel wire with a diameter of 0.04 + 0.07 mm, edged around the entire perimeter with a weighting cord from pigs tsa specific gravity of 50 grams per meter and double weighting contours of the same fabric (Fig. 2) with pockets at the corners (Fig. 3).

On the outside of the shelter there is (sewn) a reflective tape 20 mm wide, forming a dimensional marking in the form of three equidistant squares located at a distance of 45 cm from each other, and a cross formed by the diagonals of squares (Fig. 5). The shelter is folded with an “accordion” with the width of the folds is 15 cm, is rolled up and laid in a cylindrical fabric cover with handles (for storage and carrying) (Fig. 6).

Device application.

Shelter is removed from the cover and unfolds for 15 seconds over a 10 × 10 × 10 cm mock-up of a radio-controlled landmine, inside of which a Nokia mobile phone is placed to evaluate the effectiveness of shielding radio signals. The telephone signal at a frequency of 900 MHz and 1800 MHz is not transmitted from under cover and is not received by the telephone from the radio network. According to the method in accordance with GOST 12.4.172, the screening efficiency is determined in the radio frequency range from 30 MHz to 18 GHz. The results of the experimental evaluation of the shielding ability of the shelter in example 1 are presented in the table.

Table - Screening of objects from EMP by a shelter for operational isolation of radio-controlled explosive devices at various frequencies

The data in the table show that in the frequency range from 30 MHz to 18 GHz, the value of the EMP shielding coefficient by the shelter is at least 63 dB, and at a frequency of 30 MHz 100. This ensures the operational isolation of small radio-controlled explosive devices.

To ensure operational isolation of larger radio-controlled explosive devices, the following shelter operations are performed.

Shelter is removed from the cover and unfolds over 15 seconds above a mock-up of a 50 × 50 × 50 cm radio-controlled landmine, which ensures its isolation from EMP with a shielding coefficient of 55 dB. The position of the shelter at the facility is adjusted for an additional 10 seconds by straightening and laying weighting contours on the plane. The radio signal does not pass, but the total isolation time is 25 seconds.

The shelter is removed from the cover and unfolds for 15 seconds over a mock-up of a 80 × 80 × 80 cm radio-controlled landmine, which ensures its isolation from electromagnetic radiation with a screening coefficient of 45 dB. The position of the shelter at the facility is adjusted by aligning the reflective markings for an additional 10 seconds and for an additional 10 seconds by straightening and laying weighting contours on the plane. The total isolation time is 35 seconds. The radio signal does not pass.

Example 2 (control). Folding shelter according to example 1, but as a border contains only one weighting contour along the edge of the product. Shelter is removed from the cover and unfolds over a landmine with a side size of up to 80 × 80 × 80 cm in 15 seconds. The position of the shelter at the facility is adjusted for an additional 25 seconds by straightening and laying on the plane of the weighting contour, but provides a shielding factor of 25 dB. The total isolation time is 40 seconds. A radio signal passes under cover in 3 out of 10 cases.

Example 3 (control). Foldable shelter according to example 1, but without dimensional reflective markings. Shelter is removed from the cover and unfolds over a mock-up of a land mine with a size of 80 × 80 × 80 cm in 15 seconds. The position of the shelter at the facility is adjusted for an additional 30 seconds by straightening and laying weighting contours on the plane, and provides a screening factor of 45 dB. The total isolation time is 45 seconds. A radio signal passes under cover in 1 out of 30 cases.

Examples 4 and 5 (control). The folding shelter according to example 1, but made of fabric woven on a shuttleless loom with the same type of threads from a mixture of staple fibers of polyparaaramide and steel (4: 1) and a mixture of staple fibers of polymetaramide and steel (4: 1). The radio signal passes under cover according to examples 4,5 in 8 out of 10 cases.

Claims (1)

Folding shelter for operational isolation of radio-controlled explosive devices in the form of a screen made of material edged around the entire perimeter, characterized in that it is made of a layer of fabric woven with two types of threads: threads from a mixture of staple fibers of polypararamide and steel, and threads from a mixture of polypara- and polymetharamide, braided in a spiral with stainless steel wire with a diameter of 0.04-0.07 mm, as a fringe along the entire perimeter contains a lead weight cord and a double weight loop from the same fabric from the pocket and in the corners.

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