RU2565534C1 - Rescuer protective suit for work under conditions of low temperatures and radioactive radiation - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: rescuer protective suit consists of trousers with protective stockings, a shirt with a hood, two-toed gloves and a balaclava. The trousers are sewn together with stockings ending with rubber vamp with bots, to which the ribbons are sewn for attachment to the feet. In the upper part of the trousers there are shoulder straps and semi-rings, and the shirt is combined with the hood. Behind its lower edge is sewn to the intermediate strap which is passed between the legs and fastened with a button in the lower part of the shirt in front, and the sleeves end in loops which are worn on the thumb after putting on the gloves. On the sleeves of his shirt there are cuffs fitting the wrist, and the hood is fixed on a neck with the ribbon and a plastic peg. The bottom of the shirt is pulled with an elastic ribbon and is provided with a crotch strap, and the trousers are held by two straps and buckles from semi-rings and fixed with the straps below. It is additionally provided with a protective vest against electromagnetic radiation, consisting of a fabric lining connected to the protective shell, and in the fabric lining the elastic frame racks are fixed by retainers to the waist strap, and the protective shell is mounted on the elastic frame racks. The protective shell is made three-layered. The first layer facing the environment surrounding the operator, is processed with foam multifunctional composition for degasation, disinfection, desinsection, deactivation and shielding the surfaces, volumes and objects from the hazardous agents and substances with foam, where the liquid phase of the foam is a solution of clathrate didecyldimethylammonium halide with urea as an active substance in an amount of from 0.1 to 5% by weight, and the clathrate didecyldimethylammonium halide with urea is used as clathrate didecyldimethylammonium chloride with urea and/or clathrate didecyldimethylammonium bromide with urea, the composition can be used, where the clathrate didecyldimethylammonium halide with urea is used as clathrate didecyldimethylammonium bromide with urea. It is additionally equipped with a respirator comprising a concentric pleated filter, a peripheral ring of which passes into a conical surface, and the shutter is made in the form of an annular inflatable bladder of elastic material. For a tight connection of closure of the conical surface of the filter with the shutter the respirator is provided with a frame of elastic material in the shape of a truncated cone with functional openings on a side surface on one side of which, with a ring of elastic material a filter is fixed, and on the other side, by clamping a part of an inflatable bladder with the annular trough-shaped end of the frame the shutter is fixed, the vibration-protective gloves contain a palm and a back part with a fingerstall, interconnected to form an open cavity they additionally contain elastic-damping elements which are fixed by means of a patch pocket on the palm part, and the back side of the glove is made of a solid protective material, such as rubberized industrial fabric, and is connected to the palm part by two side surfaces parallel to the axis of the glove and one end surface perpendicular to the axis of the glove, and the elastic-damping elements are arranged in vertical rows parallel to each other and perpendicular to the axis of glove and formed of at least two polymeric mesh tubes which are welded to each other at points of contact with the possibility of their relative displacement within the angle lying in the range of 20÷45°, and the cavities of each mesh tube are filled with damping element made of foam plastic or foam-elast or sponge rubber, and the cavity of each of mesh tubes is filled with a damping element made in the form of polyeretbane foam chopped into pieces with the size of the faces of 0.2÷1.0 of the thickness of the mesh tubes, the rescuer shoes for operation under conditions of low temperatures is made of felt, comprising a bootleg, a foot part and a main sole, placed at the lower side of the foot part. Protective sole which is placed at the lower side of the main sole is made of EVA material or EVA compound with rubber, or EVA compound with PVC, or EVA compound with polyethylene, and additionally comprises a removable insole which is made heated of ethylene vinylacetate or other elastic material, and in the heel portion of the insole a piezoelectric element of piezo-rubber is glued, such as polydimethylsiloxane, with the thickness of 2.5÷5 mm, the size of 10×10 mm. It is placed in a protective casing, and the heating filament is connected to at least one piezoelectric element disposed in the area of heel and/or toe, and the second protective shell layer is made resilient of a ferromagnetic fabric comprising a base, a binder polymeric material and the powder of a ferromagnetic material. The fabric base is made in the method of plain weaving. Warp and weft threads are provided as alternate lavsan and high-permeability monofilaments, the amount of threads per one meter is 5000÷7000, the high-permeability monofilaments are made of supermalloy either from molybdenum permalloy with the cross-section size of 0.05÷0.1 mm, and lavsan threads have a linear density of 10÷20 tex, the ferromagnetic powder is used as high-coercivity alloy powder. The content of components in the fabric by weight is in a ratio by wt %: lavsan threads 10÷15; high-permeability material monofilaments 20÷25; binder polymer substance - acrylic copolymers 10÷15; powder of high-coercivity alloy 50÷55. The second layer is made of a material absorbing the radioactive radiation, with the absorption coefficient corresponding to the dose of ionizing radiation, and the material absorbing the radioactive radiation is used as material which comprises as a filler the lead oxides (lead oxide II, IY) and the binder - polyvinyl butyral, ethyl acetate, di-(alkylpolyethyleneglycol) ester of phosphoric acid of the formula

where n = 6, R - alkyl group containing 8-10 carbon atoms and ethyl cellulose with the following ratio of components, wt %: lead oxide II, IY 30.6-56.8; polyvinyl butyral 3.8-10.2; ethyl acetate 14.3-26.5; di-(alkylpolyethyleneglycol) ester of phosphoric acid 0.2-0.4; ethylcellulose - the rest. The new composition of the binder in the claimed invention provides full compatibility with lead oxides and enables to obtain materials with high lead equivalent and the degree of flexibility that has good adhesion to metals, concrete, brick, moreover, the material is a highly concentrated suspension rapidly curable in air, and the material viscosity is 20÷70 Pa∙s, which enables to cast films from it of different thickness with die or extruder, to apply to the surface with a brush, pouring over, pour into various cavities, slits and channels.

EFFECT: increased efficiency and reliability of the design of clothes of rescuers operating under conditions of burning objects in the presence of flying and falling objects of a destructible object, and in the presence of radioactive radiation.

11 dwg

Description

The invention relates to personal protective equipment and is intended for emergency rescue and repair work in emergency conditions, in particular, exposure to the gaseous and liquid phases of aggressive chemically hazardous substances (AHOV) at chemical industry enterprises, as well as in the conditions of parsing, where long work with vibroactive tools, such as punchers, jackhammers, as well as at low temperatures.

The closest in technical essence to the claimed object is a protective suit of a lifeguard according to the patent of the Russian Federation No. 2495610, publ. BI No. 29 dated 10/20/2013 - [prototype], consisting of a protective jacket from mechanical stress, semi-overalls, a vest, vibration-proof shoes and a lifeguard helmet, while the protective jacket is made with a protective shell consisting of a fabric lining connected to the protective shells, and elastic frame racks are fixed in the fabric lining by means of clamps on the belt, and the protective shells are mounted on the elastic frame racks, and the protective shell is made of three layers.

A disadvantage of the known suit is that it is difficult to work in it under conditions of parsing debris that occurred as a result of emergency conditions at chemical enterprises associated with the operation of a hand-held vibroactive tool and in the presence of radioactive radiation.

A technically achievable result is an increase in the efficiency of rescuers at low temperatures and in the presence of radioactive radiation.

This is achieved by the fact that in a lifeguard protective suit consisting of trousers with protective stockings, a shirt with a hood, two-fingered gloves and a comforter, moreover, the trousers are sewn together with stockings ending in rubber socks with bots, to which ribbons are sewn to attach to the legs, while in the upper part of the trousers there are shoulder straps and half rings, and the shirt is combined with a hood, and an intermediate strap is sewn to the lower edge of the hem, which is passed between the legs and fastens on the button in the lower part of the shirt in front, and the sleeves are closed are sewn with loops that are worn on the thumb after putting on the gloves, while on the shirt’s sleeves there are cuffs that fit the wrist, and the hood is fixed on the neck with tape and a plastic peg, the bottom of the shirt is pulled with elastic tape and equipped with an inguinal belt, and the trousers are held with two straps and buckles are made of half rings and are fixed below with straps, while it is additionally equipped with a protective vest from electromagnetic radiation, consisting of a fabric lining connected to a protective shell, and a fabric lining elastic frame racks are fixed by means of fixators on the waist belt, and the protective shell is mounted on elastic frame racks, while the protective shell is made of three layers, the first layer facing the operator’s environment, treated with a polyfunctional foam composition for degassing, disinfection, disinfection, decontamination and shielding surfaces, volumes and objects from hazardous agents and substances with foam, where the liquid phase of the foam is a solution of didecyldimethylammonium halide clathrate with urea ohm as an active substance in an amount of from 0.1 to 5% by weight, and as a didecyldimethylammonium halide clathrate with urea, a didecyldimethylammonium chloride clathrate with urea and / or a didecyldimethylammonium bromide clathrate with urea can be used, a composition where with carbamide, didecyldimethylammonium bromide clathrate with carbamide is used, and it is additionally equipped with a respirator containing a concentric pleated filter, a perifer the ring of which passes into a conical surface, and the obturator is made in the form of an annular inflatable chamber made of elastic material, and for tight connection of the end of the conical surface of the filter with the obturator, the respirator is equipped with a frame of elastic material in the form of a truncated cone with functional holes on the side surface, on one side which, using a ring of elastic material, the filter is fixed, and on the other hand, by pinching part of the inflatable chamber with an annular groove the obturator is fixed with a sharp end of the frame, and the gloves are vibration-proof and contain the palm and back with the fingertip, interconnected to form an open cavity, they additionally contain elastic-damping elements that are fixed by means of a patch pocket on the palm of the hand, and the back of the gloves is made of a solid protective material , for example, rubberized technical fabric, and is connected to the palm part by two side surfaces parallel to the axis of the mitten, and one end a surface perpendicular to the axis of the mitten, and the elastic-damping elements are arranged in vertical rows parallel to each other and perpendicular to the axis of the gauntlet and are made of at least two polymer cellular tubes that are welded together at the points of contact with the possibility of their relative movement within the angle lying in the range of 20 ÷ 45 °, and the cavities of each of the cellular tubes are filled with a damping element made of foam rubber, or foam rubber, or sponge rubber, and the cavities of each of the cellular tubes filled with a damping element made in the form of polyurethane foam cut into pieces along the sides 0.2 ÷ 1.0 of the thickness of the mesh tubes, lifeguard shoes for working at low temperatures are made with a felted boot containing the bootleg, the foot part and the main sole located on the lower side part of the foot, while the protective sole, which is placed on the bottom side of the main sole, is made of EVA material, or of EVA compound with rubber, or of EVA compound with PVC, or of EVA compound with polyethylene and, in addition, holds an insert insole, which is heated with ethylene vinyl acetate or other elastic material, and a piezoelectric element made of piezoresin, for example, polydimethylsiloxane, 2.5–5 mm thick, 10 × 10 mm in size, is glued into the heel of the insole, while it is placed in a protective case , and the heating thread is connected to at least one piezoelectric element located in the area of the heel and / or toe.

In FIG. 1 shows a general view of the proposed lifeguard protective suit; FIG. 2 is a variant of a protective suit of a lifeguard with a gas mask, in FIG. 3 is a structural diagram of a lifeguard protective suit; FIG. 4 shows the construction of a protective vest against electromagnetic interference, FIG. 5 is a diagram of a protective jacket of a protective vest; FIG. 6 - structure of the composite material, in FIG. 7 is a diagram of a respirator; FIG. 8 is a front view of vibration-proof gauntlets, in FIG. 9 is a profile projection of vibration-proof mitts, in FIG. 10 shows the general construction of felted shoes; FIG. 11 is a diagram of an insole for heating the foot.

The protective suit of the lifeguard (Figs. 1 and 3) consists of trousers 7 with protective stockings, a shirt 1 with a hood 2, vibration protection gloves 11 and a comforter. Pants 7 are sewn together with stockings ending in rubber osoyuzki with bots 8. Ribbons 9 are sewn to them for fastening to the legs. In the upper part of the trousers there are shoulder straps 10 and half rings (not shown in the drawing). Shirt 1 is combined with hood 2, an intermediate strap 5 is sewn to the lower edge at the back, which is passed between the legs and fastens on a button in the lower part of shirt 1 in front. Bag 6 is fixed on the strap. The sleeves end with loops 4, which are worn after putting on the vibration-proof gloves 11. The sleeves of the jacket have cuffs that fit the wrist. The hood 2 is fixed to the neck with a tape 3 and a plastic peg. The bottom of the jacket (shirt) is pulled together with elastic tape and equipped with an inguinal belt (not shown in the drawing). The trousers are held with two straps 10 and buckles of half rings and are fixed at the bottom with straps.

A variant of the suit is possible (Fig. 2) as an army tool for individual protection from radioactive dust and drip-aerosol toxic substances, equipped with a gas mask. The suit is not insulating. When infected, the suit is subject to special treatment and can be used many times in the future. It is made of rubberized fabric UNKL-3 or fabric T-15 and consists of one-piece trousers with stockings, a jacket with a hood and three-fingered mittens. On the sleeves of the jacket there are cuffs that fit the wrist.

A light protective suit of a lifeguard can be equipped with a protective vest from electromagnetic radiation (Fig. 4), which consists of a fabric lining 12, in which elastic frame racks 13 are fixed by means of clips 15 on the waist belt. The protective shell 14 is mounted on the elastic frame racks 13. The protective shell (Fig. 5) 14 can be fixed on the frame racks 13 over the entire area of the torso of a human operator, including the shoulder joints and hands (not shown).

The protective shell 14 is made of three layers, and the first layer facing the operator’s environment is made in the form of interconnected rings, the material of which is stainless steel, which is treated with a composite material with enhanced protective properties against electromagnetic radiation. The third layer 16, facing the operator’s body, is made of perforated polymeric material, for example, aramid fiber, and the second layer 17 located between them is made of elastic mesh elements. The density of the mesh structure of the elastic mesh elements is in the optimal range of values of 1.2 - 2.0 g / cm ³ , and the material of the wire of the elastic mesh elements is steel grade EI-708, and its diameter is in the optimal range of 0.09 - 0.15 mm.

An embodiment of the second layer 17 of the protective sheath 14 is elastic from a ferromagnetic fabric containing a base, a binder polymer substance and a powder of ferromagnetic material, while the fabric base is made by weaving by plain weaving, while the main and weft threads are made of alternating dacron and soft magnetic monofilaments, the number of threads per meter is 5000 ÷ 7000, soft magnetic monofilaments are made of superalloy or molybdenum permalloy with a diameter of 0.05 ÷ 0.1 mm, and mylar threads eyut linear density of 10 ÷ 20 tex as the high-coercivity ferromagnetic powder is an alloy powder, the content of components in the mass ratio is in fabric weight. %: lavsan filament 10 ÷ 45; monofilament of soft magnetic material 20 ÷ 25; polymer binder - acrylic copolymers 10 ÷ 15; highly coercive alloy powder 50 ÷ 55.

It is possible that the second layer 17 is made of a material that absorbs radioactive radiation, with an absorption coefficient corresponding to the dose rate of ionizing radiation, as a material that absorbs radioactive radiation, a material is used that contains lead oxides (lead oxide II, IY) as a filler and a binder - polyvinyl butyral, ethyl acetate, di- (alkylpolyethylene glycol) phosphoric acid ester of the formula

,

,

where n = 6, R is an alkyl group containing 8-10 carbon atoms and ethyl cellulose in the following ratio of components, wt. %: lead oxide II, IY 30.6-56.8; polyvinyl butyral 3.8-10.2; ethyl acetate 14.3-26.5; phosphoric acid di- (alkylpolyethylene glycol ether) 0.2-0.4; ethyl cellulose is the rest, while the new binder composition in the claimed invention provides full compatibility with lead oxides and allows to obtain materials with a high lead equivalent and a degree of flexibility that has good adhesion to metals, concrete, brick, in addition, the material is a highly concentrated suspension, quickly hardening in air, and the viscosity of the material is 20 ÷ 70 Pa ∙ s, which allows you to cast films of different thickness from it with a die or extruder, apply to the surface to Stu, pouring, poured into the various cavities, crevices and channels.

Composite material for protection against electromagnetic radiation (Fig. 6) consists of a polymer base with particles 18 and 20, in which particles of 19 compounds are distributed - (Fe, Si) or - Co with a nanocrystalline structure with a bulk density (0.6 ÷ 1.4 ) · 10 ^-5 1 / nm ³ . The polymer base for fixing the position of powder particles with a nanocrystalline structure is made in the form of alternating structural elements with particles 18 and 20 located at an angle of 90 ° to each other, and each of the elements with particles is made in the form of elongated particles arranged in parallel rows, moreover, the particles located to the left and to the right of it are shifted by an amount not exceeding half the maximum particle size. The use of a material with a nanocrystalline structure as a filler provides an increase in magnetic permeability.

It was experimentally established that when the bulk density of nanocrystals in the amorphous matrix is less than 0.6 · 10 ^-5 1 / nm ^{3, the} effect of increasing the magnetic permeability is not observed. When the bulk density of nanocrystals in the amorphous matrix is greater than 1.4 · 10 ^-5 1 / nm ³ , the magnetic permeability decreases. Therefore, the following range of bulk density of nanocrystals in the amorphous matrix is optimal: more than 0.6 · 10 ^-5 1 / nm ³ , but less than 1.4 · 10 ^-5 1 / nm ³ .

The suit is treated with a polyfunctional foam composition for degassing, disinfection, disinsection, decontamination and screening of surfaces, volumes and objects from hazardous agents and substances with foam, where the liquid phase of the foam is a solution of didecyldimethylammonium halide clathrate with urea as an active substance in an amount from 0.1 to 5% by weight, and as a didecyldimethylammonium halide clathrate with urea, a didecyldimethylammonium chloride clathrate with carbamide and / or a didecyldimethylammonium bromate clathrate is used Ida with urea. A composition may be used where a didecyldimethylammonium bromide clathrate with urea is used as the didecyldimethylammonium halide clathrate.

Lightweight protective suit of a lifeguard with a protective vest from electromagnetic radiation works as follows.

It also protects the human operator from sudden impacts from both the mechanical impact of the environment and, for example, animals such as cattle. The implementation of the frame racks 13 elastic allows you to dampen the impact (make it elastic), and the protective shell 14 will prevent injury to the skin of the human operator.

Composite material works as follows.

An electromagnetic wave that penetrates deep into the material is more actively absorbed in it due to the higher absorption capacity of the nanocrystalline structure, which has a greater magnetic permeability compared to amorphous. When the electromagnetic wave reaches the opposite surface, its greater absorption occurs, which leads to an increase in the screening coefficient.

The technical and economic efficiency of the invention is expressed in reducing the thickness and weight and size characteristics of the composite material, which will improve the reliability of electronic and electrical equipment, provide effective protection of biological objects by increasing the magnetic permeability of the composite material and, as a result, the shielding coefficient of electromagnetic fields of the radio frequency range .

When the bulk density of nanocrystals is (Fe, Si) or -Co (0.6 ÷ 1.4) · 10 ^-5 1 / nm ^{3, the} magnetic permeability of the composites in comparison with the amorphous state increases by 2-3 times and ranges from 90 to 135 units

The second layer 17 of the protective shell 14, made of elastic made of ferromagnetic tissue, prevents injury to the skin of the lifeguard and increase the absorption and scattering of radioactive radiation as it passes through the material, and also increases its strength in general. By magnetizing ferromagnetic fabric in different directions, using magnetically soft monofilaments from superalloy or molybdenum permalloy, applying an external magnetic field of different sizes, varying its direction, you can control the characteristics of the magnetic field generated by the fabric as a whole and in microvolumes limited by soft magnetic monofilaments. Changing the magnetic field in the above zones allows you to control the properties of magnetic systems that use ferromagnetic tissue, as well as the process of shielding radioactive radiation when changing the wavelength and power of this radiation.

The lifeguard’s protective suit can be additionally equipped with a respirator (Fig. 7), which contains a concentric pleated filter 21, the peripheral ring of which passes into a conical surface, a frame 22 made of a truncated cone of elastic material with functional holes on the side surface and an annular groove end with side of the base, an annular inflatable chamber 23 of elastic material provided with a fitting for inflation, a ring 24 of elastic material. The frame on the outer side of the trough-shaped end has two diametrically opposite special holes for fixing the respirator with a headband on the face and one hole for passing the fitting 25 of the annular inflatable chamber.

The respirator is commissioned as follows: a filter is put on the conical surface of the frame and secured with a ring, the inflatable chamber is inserted into the groove through the annular slot and inflated with air or gas until the dumbbell shape is of the desired size, one part of which is clamped by the grooved end of the frame and the other part forms a shutter after which the fitting is hermetically closed to ensure the desired shape of the shutter during the entire time of use of the respirator. By changing the size of the obturator by the amount of air or gas in the chamber, you can precisely adjust the entire obturation line to any size of the person’s face, which will provide reliable protection of the respiratory system and eliminate the need to manufacture respirators of several sizes.

Felted shoes of a lifeguard (Fig. 10) for operation at low temperatures includes a boot 32, a stop part 33, a main sole 34 located on the lower side of the foot part 33, and a protective sole 35 located on the lower side of the main sole 34, as well as an insert insole 36 for heating the foot. The connection of the main sole 34 with the lower side of the stop portion 32 is carried out by: one or two twisted threads located on top - outside - down at an acute angle to the sole. Thread stitches are placed outside on the underside of the stop portion. In addition, the connection of the main sole 34 and the protective sole 35 can be carried out by gluing, welding or by any other known method.

The implementation of the main sole of EVA felted shoes fully ensures the achievement of the claimed technical result, since EVA is a molded light and elastic material with good shock-absorbing properties, lightness, abrasion resistance, odorless, non-allergenic and anti-fungal effect. EVA products have a high degree of softness and elasticity, are not subject to deformation, withstand a negative temperature of -30 °, have a low degree of heat transfer (thermos effect) and do not allow moisture to pass through. EVA - a substance that relates to polyolefins, is obtained by copolymerization of ethylene and vinyl acetate monomer. The acetoxy groups are randomly distributed in the ethylene group. The vinyl acetate content determines the mechanical properties of the copolymer, as well as its type (elastomer or thermoplastic). Due to its high vinyl content, ethylene vinyl acetate acquires high resistance to oils, solvents, ozone and high temperature. It is also worth noting that the EVA copolymer has found wide application in the preparation of compounds with other polymers, such as rubber, PVC or polyethylene, as well as mixtures with fillers and additives.

The insole 36 (Fig. 11) is placed in a protective cover 36, and the heating thread 38 is connected to at least one piezoelectric element 39 located in the area of the heel and / or toe. In addition, the insole can be made of ethylene vinyl acetate or other elastic material, and a piezoelectric element made of polydimethylsiloxane (piezoresin) with a thickness of 2.5-5 mm and a size of about 10 × 10 mm is glued to the heel of the insole. In addition, the cover can be made removable. In addition, the insole cover can be made of polycotton. The insole is heated through the cover 37 by means of a heating thread 38 connected to the piezoelectric element 39, with a constant pressure on which a direct current occurs. It is preferable that the piezoelectric element is fastened in the mid-heel region (two piezoelectric elements can be used in the model: in the heel region and in the forefoot region, in which case the heating power is doubled). The use of piezoelectric elements as a heating element allows you to use insoles outdoors without risk to health, to constantly maintain a comfortable shoe temperature in the cold season. The maximum heating temperature is about 45 °.

As a piezoelectric material, PZT (lead zirconate-titonate) can be used, transferred to a flexible PDMS (polydimethylsiloxane) sample 2.5-5 mm thick (the so-called piezoresin). During deformation, this piezoelectric element generates EMF (electromotive force of direct current), sufficient to generate current strength (not more than 12 mA) and voltage (not more than 36 V). It is possible to use another similar piezoelectric element and piezoelectric. It is possible to use some other soft and flexible piezoelectric with an EMF sufficient to generate current (not more than 12 mA) and voltage (not more than 36 V), necessary for heating the insoles. The insole heating temperature depends on the characteristics of the piezoelectric, the pressure force on the piezoelectric element, the length of the heating thread and other factors. The material of the insole cover is polycotton, the cover is removable, which allows it to be washed as it becomes dirty.

The vibration-protective gloves 11 are made with the fastening of the elastic-damping element by means of a patch pocket (Figs. 8 and 9) and consist of the surface of the mitten 26, which is a cavity open on one side, bounded by the back of the mitten made of a continuous protective material, for example, from rubberized technical fabric, and palm portion with a fingertip 30 for the thumb. The back side of the mitten is connected to the palm of the hand by two side surfaces parallel to the axis of the mitten, and one end surface 31, perpendicular to the axis of the mitten. The mittens are made with a patch pocket 29, into which a patch 28 with elastically damping elements 27 of a tubular type is inserted, which are arranged in vertical rows parallel to each other and perpendicular to the axis of the mitt.

Elastic-damping elements 27 are made of at least two polymer cellular tubes (not shown in the drawing), which are soldered to each other in places of contact with the possibility of their relative movement within an angle lying in the range of 20 ÷ 45 °. The cavities of each of the cellular tubes are filled with a damping element made of foam rubber, or foam elastomer, or sponge rubber. Cellular polymer tubes are obtained by extrusion, cut to a predetermined length and laid in a conductor, observing the necessary laying direction, i.e. placing the tubes parallel to each other. After that, heating elements are brought to their ends and welded together at the points of contact.

When working with a manual vibroactive mechanized tool, the elastic damping elements 27, which are made of at least two polymer cellular tubes filled with, for example, foam rubber, dampen the local vibration transmitted to the operator’s hands. The use of vibration protection gloves 11 will significantly increase operator safety.

The cavities of each of the cellular tubes can be filled with a damping element made of cut pieces of polyurethane foam (not shown in the drawing), which contributes to additional damping of vibration due to mechanical friction between the surfaces of the cut pieces of polyurethane foam in the cellular tubes of elastic-damping elements 27 when exposed to vibration load. Since the packaging of the cut pieces of polyurethane foam in the cellular tubes is arbitrary, the rubbing surfaces of the cut pieces of polyurethane foam rubbing against each other have different areas, which provides effective damping of the vibration in a wide range of operating frequencies (30-1000 Hz), while it was found that the vibrations acting on the operator’s hands are affected by the aspect ratio of the cut pieces of polyurethane foam on the thickness of the filled tube-pocket of the liner.

When the face size of the cut pieces of polyurethane foam is less than 0.2 of the thickness of the filled mesh tubes, the damping efficiency is reduced by reducing the amount of dispersion of vibration energy, and when the size of the face of the cut pieces of polyurethane foam is greater than 1.0 of the thickness of the mesh tubes, the damping efficiency is also reduced, since when the sizes of the cut pieces of polyurethane foam exceed the thickness of the cellular tubes, they are in a pre-compressed state and therefore the total work of deforming them is smart It is subject to vibration load. Thus, it is optimal to fill with polyurethane foam, cut into pieces with dimensions along the sides of 0.2 ÷ 1.0 of the thickness of the mesh tubes.

The design of the respirator includes the possibility of reusing its components and replacing them as necessary.

Felted rescue shoes for work in low temperatures works as follows.

A user of any age and complexion puts on felted shoes and can easily perform any dynamic movements, walking, running, etc. This is due to the fact that the main sole is made of EVA material - a light, durable and flexible material.

With periodic pressure on the piezoelectric element 39, a current occurs, which, passing along the heating thread 38, laid across the entire surface of the insole, heats it and transfers heat through the cover 37 to the user.

Thus, the utility model provides increased operational reliability and increases usability, as well as provides electrical safety, independence from a stationary power source and facilitates the process of its use. The lifeguard protective suit can be used when performing degassing, decontamination and disinfection works to protect skin, clothing and shoes from the long-term effects of toxic and toxic substances, toxic dust, to protect against solutions of acids, water, alkalis, sea salt, varnishes, paints, oils, fats and oil products, protection against harmful biological factors, is used in areas contaminated with toxic and chemically hazardous substances, in the chemical and military industries, as well as from electromagnetic effects.

Claims (1)

The lifeguard’s protective suit, consisting of trousers with protective stockings, hooded shirts, two-fingered gloves and a comforter, with trousers sewn together with stockings ending with rubber boots with bots, to which ribbons are sewn to attach to the legs, while the upper part of the trousers has shoulder straps and half rings, and the shirt is combined with a hood, and an intermediate strap is sewn to the lower edge of the hem, which is passed between the legs and fastens with a button in the lower part of the shirt in front, and the sleeves end with loops that disappear on the thumb after putting on the gloves, while on the shirt’s sleeves there are cuffs that fit the wrist, and the hood is fixed on the neck with a ribbon and a plastic peg, the bottom of the shirt is pulled with elastic tape and equipped with an inguinal belt, and the trousers are held with two straps and buckles made of half-rings and are fixed below with straps, while it is additionally equipped with a protective vest from electromagnetic radiation, consisting of a fabric lining connected to a protective shell, and elastic frames are fixed in the fabric lining racks by means of clips on the waist belt, and the protective shell is mounted on elastic frame racks, while the protective shell is made of three layers, and the first layer facing the operator’s environment is treated with a polyfunctional foam composition for degassing, disinfection, disinsection, decontamination and screening of surfaces, volumes and objects from hazardous agents and substances with foam, where the liquid phase of the foam is a solution of didecyldimethylammonium halide clathrate with urea as acting in the amount is from 0.1 to 5% by weight, and the didecyldimethyl ammonium chloride clathrate with urea and / or the didecyldimethyl ammonium bromide clathrate with urea is used as the didecyldimethyl ammonium chloride clathrate and the carbamide can be used; didecyldimethylammonium bromide with carbamide, and it is additionally equipped with a respirator containing a concentric pleated filter, the peripheral ring of which goes into the conical surface, and the obturator is made in the form of an annular inflatable chamber made of elastic material, and for a tight connection of the end of the conical surface of the filter with the obturator, the respirator is equipped with a frame of elastic material in the form of a truncated cone with functional holes on the side surface, on one side of which using a ring of elastic material, the filter is fixed, and on the other hand, by pinching part of the inflatable chamber with the annular grooved end of the frame the shutter is fixed, the vibration-protective gloves contain the palm and back parts with the fingertip, connected to each other with the formation of an open cavity, they additionally contain elastic-damping elements that are fixed by means of a patch pocket on the palm part, and the back of the gloves is made of solid protective material, for example, rubberized technical fabric, and connected to the palm of the hand with two side surfaces parallel to the axis of the mitten, and one end surface perpendicular to the axis of the hands faces, and the elastic-damping elements are arranged in vertical rows parallel to each other and perpendicular to the axis of the mitten, and the elastic-damping elements are made of at least two polymer mesh tubes that are soldered to each other in places of contact with the possibility of their relative movement within the angle lying in range 20 ÷ 45 °, and the cavities of each of the cellular tubes are filled with a damping element made of foam rubber, or foam rubber, or sponge rubber, and the cavities of each of the cellular tubes are filled with de with a muffing element made in the form of polyurethane foam cut into pieces along the sides 0.2 ÷ 1.0 of the thickness of the mesh tubes, the rescuer's shoes for working at low temperatures are made of felted boots containing the bootleg, the foot part and the main sole placed on the bottom side of the foot parts, wherein the protective sole, which is located on the lower side of the main sole, is made of EVA material, or of EVA compound with rubber, or of EVA compound with PVC, or of EVA compound with polyethylene, and additionally contains the bottom insole, which is heated with ethylene vinyl acetate or other elastic material, and a piezoelectric element made of piezoresin, for example, polydimethylsiloxane, 2.5 ÷ 5 mm thick, 10 × 10 mm in size, is glued into the heel of the insole, while it is placed in a protective case, and the heating thread is connected to at least one piezoelectric element located in the area of the heel and / or toe, and the second layer of the protective shell is made of elastic ferromagnetic fabric containing a base, a binder polymer substance and a powder of ferromagnetic material, In this case, the basis of the fabric is made by weaving by plain weaving, while the main and weft threads are made of alternating dacron and soft magnetic monofilaments, the number of threads per meter is 5000 ÷ 7000, the soft magnetic monofilaments are made of superalloy or molybdenum permalloy with a cross-section size of 0.05 ÷ 0 , 1 mm, and mylar threads have a linear density of 10 ÷ 20 tex, a highly coercive alloy powder is used as a ferromagnetic powder, and the content of components in the fabric by weight is in the ratio . SRI, wt%: Dacron thread 10 ÷ 15; monofilament of soft magnetic material 20 ÷ 25; polymer binder - acrylic copolymers 10 ÷ 15; high coercive alloy powder 50 ÷ 55, characterized in that the second layer is made of a material that absorbs radiation, with an absorption coefficient corresponding to the dose rate of ionizing radiation, a material that contains lead oxides as a filler is used as a material that absorbs radiation ( lead oxide II, IY) and a binder - polyvinyl butyral, ethyl acetate, di- (alkylpolyethylene glycol) phosphoric acid ester of the formula

where n = 6, R is an alkyl group containing 8-10 carbon atoms and ethyl cellulose in the following ratio of components, wt.%: lead oxide II, IY 30.6-56.8; polyvinyl butyral 3.8-10.2; ethyl acetate 14.3-26.5; phosphoric acid di- (alkylpolyethylene glycol ether) 0.2-0.4; ethyl cellulose is the rest, while the new binder composition in the claimed invention provides full compatibility with lead oxides and allows to obtain materials with a high lead equivalent and a degree of flexibility that has good adhesion to metals, concrete, brick, in addition, the material is a highly concentrated suspension, quickly hardening in air, and the viscosity of the material is 20 ÷ 70 Pa ∙ s, which allows you to cast films of different thickness from it with a die or extruder, apply to the surface to Stu, pouring, poured into the various cavities, crevices and channels.

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