RU201329U1 - Containers for storage and transportation of explosive and sensitive items - Google Patents

Abstract

The utility model refers to means for storing and transporting products for industrial, household, military purposes with increased protective and operational characteristics and is intended for stowage, storage and transportation of mainly ammunition, explosives, electronics, electrical engineering, and other technically complex devices of any kind in any combinations. The technical solution can be used for operation in the conditions of troops, arsenals (bases, warehouses) and industrial enterprises and provides an increase in the operability of the device by increasing its rigidity and strength while minimizing the mass of the device. The container for storage and transportation of explosive and sensitive items includes a housing 1 and a cover 2. The cover 2 is fixed relative to the housing 1 by locking elements 3. In addition, the container has carrying elements 4. On the bottoms of the body and the cover there are stiffening ribs 5. Stiffening ribs 5 are evenly distributed over the surfaces of the bottoms of the housing 1 and the cover 2 and have the form of a cellular honeycomb structure. The container is made of a composite material based on unsaturated polyester resin with the addition of fiberglass in the presence of microtalc and silane lubricant. 7 p.p. f-ly, 3 dwg

Description

The utility model refers to means for storing and transporting products for industrial, household, military purposes with increased protective and operational characteristics and is intended for stowage, storage and transportation of mainly ammunition, explosives, electronics, electrical engineering, and other technically complex devices of any kind in any combinations. The technical solution can be used for operation in the conditions of troops, arsenals (bases, warehouses) and industrial enterprises.

A container for storing and transporting explosive products is known from the existing prior art, containing a housing and a lid, having stiffeners and grooves on the outer surface, shaped flanges, a seal, locking and other functional elements. Additionally, the container contains an inner shell. The outer surface of the body and the lid of the container and the surface of the inner shell are covered with an intumescent composition when heated above 150 ° C (see, for example, RU 2540187 C1, publ. 10.02.2015). The disadvantage of the known solution is the insufficient strength of the container.

From the existing prior art, a container for storing and transporting products is known, which has carrying elements and includes a housing and a lid fixed relative to it with locking elements; on the bottoms of the housing and lid there are stiffeners made in one piece with them (see, for example, patent RU 114352 for industrial design, publ. 04/25/2019). The disadvantage of the known solution is the insufficient strength of the container.

The task to be solved by the claimed utility model is the creation of fire-resistant containers for storage and transportation of explosive and sensitive products, resistant to shock loads and ensuring the safety of their operational characteristics and performance characteristics of the products contained in it during transportation by any means of transport, as well as after a single fall in any position on the ground or concrete.

The problem posed in the proposed technical solution is solved due to the fact that a container for storage and transportation of explosive and sensitive products, which has carrying elements and includes a body and a lid fixed relative to it with locking elements, and stiffeners are placed on the bottoms of the body and lid, according to the utility model, made of a composite material based on unsaturated polyester resin with the addition of fiberglass in the presence of microtalc and silane lubricant, and the stiffeners are evenly distributed over the surfaces of the body and cover bottoms, made in one piece with them and with their walls and have the appearance of a cellular honeycomb structure.

Stiffening ribs can be made on the inner surface of the housing walls.

The body can additionally be equipped with stiffening baffles, reinforced on both sides with vertical stiffeners.

Stiffening ribs can be made on the outer vertical surface of the cover and body in the area of the locking elements.

Stacking elements can be made on the outer horizontal surfaces of the cover and body.

The cover can be hinged relative to the body.

Carrying elements can be made in the form of pivoting brackets with limitation of their rotation in a horizontal position.

Ventilation grooves can be made on the bottom of the lid and body from the outside

The technical result achieved by the given set of features is to increase the device's performance by increasing its rigidity and strength while minimizing the device mass.

Device health is the state of the device in which it is capable of performing the required functions. Rigidity and strength and devices are the main factors for ensuring the operability of cabinet products, since strength refers to the ability of a device to withstand stress without breaking, and rigidity refers to the ability of a device to withstand deformation when stress is applied. A prerequisite for the performance of the claimed device of the required functions is the elimination of both deformation and destruction of the device when exposed to shock loads and loads arising in the process of operational transportation of goods.

The causal relationship of these features with the claimed technical result is disclosed further in the text of the description.

The essence of the claimed device is illustrated by drawings that do not cover and, moreover, do not limit the scope of claims for this solution, but are only illustrative material of a particular case of its implementation, which depict:

in fig. 1 - container for storage and transportation of explosive and sensitive items, general view;

in fig. 2 - case of containers for storage and transportation of explosive and sensitive items, top view;

in fig. 3 - lid of containers for storage and transportation of explosive and sensitive items, bottom view.

The container for storage and transportation of explosive and sensitive items includes a housing 1 and a cover 2. The cover 2 is fixed relative to the housing 1 with locking elements 3. In addition, the container has carrying elements 4. On the bottoms of the body and the cover there are stiffening ribs 5. Stiffening ribs 5 are evenly distributed over the surfaces of the bottoms of the body and cover and have the form of a honeycomb structure. The container is made of a composite material based on an unsaturated polyester resin with the addition of fiberglass in the presence of micro talc and silane lubricant.

The principle of operation of the package is that the outer layer protects the products inside it from mechanical stress.

During operation of the device, the main vertical static load is borne by the bottom of the container body from the weight of the products packed into it, which increases during transportation under the influence of mechanical impact on it by the weight of the load and dynamic loads, mainly due to the vertical inertial force. In this case, the bottom of the body perceives the maximum values of static loads, and when stacked in a stack, the container lid perceives similar loads from overlying loads, the loads reach maximum values in the lower rows of loads stacked, which is explained by pressure. Dynamic loads arise when individual cargo items fall, collisions of loads during loading and unloading operations, under the influence of vibrations and vibrations of the rolling stock during unsteady driving modes. To strengthen the bottoms of the body and cover, stiffeners are placed over their entire area, made in one piece with them. The placement of stiffeners on the bottoms of the elements forces them to work in compression, increasing the rigidity of the bottoms, and their uniform distribution, performing in the form of honeycombs in one piece with the bottoms and walls of the body and the lid, makes it possible to strengthen the bonds between the areas of greatest deformations, minimizing bending stresses in the bottoms and in device as a whole. A cellular structure in the form of honeycombs is used as stiffeners on the lid and base of the box. This type of geometrical figure (regular hexagon) best of all distributes shock and static loads and represents the optimal ratio in terms of weight of the structure - manufacturability of the structure - strength of the structure.

The rigidity of the device is influenced by the strength of the material. The higher the strength of the material, the greater the allowable stress and less deformation of the device. Containers for storage and transportation of explosive and sensitive items are made of a composite material based on unsaturated polyester resin with the addition of fiberglass in the presence of micro talc and silane lubricant. The product is made by hot forming or laying with atmospheric curing of the binder, or by mixing these techniques.

The choice of unsaturated polyester resin as the base of the composite material is due to its technical characteristics, such as a high level of strength and hardness after complete solidification, wear resistance and long service life without deteriorating the physical characteristics of the product, as well as good resistance to high temperatures. In addition, unsaturated polyester resins have high chemical resistance to chemical attack. All these characteristics are necessary for a product intended for the transportation and storage of hazardous, such as in the case of ammunition and explosives, or sensitive, such as electronic devices, electrical engineering, products. At the same time, with a resistance comparable to that of metals, unsaturated polyester resin is 4 times lighter than metals, which makes it possible to minimize the weight of the device as a whole while maintaining high rigidity of the device. Examples of the use of unsaturated polyester resin in the claimed solution can be isophthalic unsaturated polyester resin, orthophthalic unsaturated polyester resin, terephthalic unsaturated polyester resin.

Fiberglass is a reinforcing element and is designed to improve the strength characteristics of the product material according to the claimed technical solution by reducing the stress level in it. Glass fiber with low density has a high tensile strength, high modulus of elasticity, high heat resistance, is neutral to chemical and biological effects. The strength of glass fibers exceeds that of natural and most synthetic fibers. Fiberglass has ideally elastic properties, i.e. the proportional limit coincides with the ultimate strength. Due to these properties, during shrinkage during manufacture or as a result of loading during use of the product, all tensile stresses are transferred to the glass fiber, and, due to its high tensile strength, it does not break. This prevents cracking. At the same time, due to its high longitudinal elasticity, the fiberglass absorbs tensile stress on itself without changing its integrity. Due to the use of fiberglass as a reinforcing element, the surface quality of the product, its elasticity, rigidity, impact resistance, resistance to compression and friction are increased. In addition, fiberglass has a low specific gravity, which helps to minimize the weight of the device. As the main grades for the production of the material, it is preferable to use fiberglass type "E" grade 562A with a thickness of 10-15 microns, grade 979 with glass type "S", grade EBC - 13 with glass type "E", as well as fiberglass roving with a thickness of 8 up to 15 nm glass type "C", "E" and "S" from various manufacturers with a linear density of 2400 tex with DR filament type.

Unsaturated polyester resin in relation to glass fiber plays the role of a binder, the viscosity of which sharply increases during the manufacture of the product, which affects the heterogeneity and uneven distribution of reinforcing glass fiber in it. To ensure a uniform distribution of fiberglass in the mass of the binder throughout its volume, microtalc is used, which is a highly dispersed filler and, due to its high chemical inertness and hydrophobicity, contributes to a better transfer of reinforcing fiberglass to all parts of the product during the manufacturing process, improving the strength characteristics of the finished product as a whole due to uniform stress distribution throughout its volume, which also affects the strength of the finished product. Examples of the use of microtalc can be microtalc grades MT-GShM, MT-KShS, MT-EGS-1 according to GOST 19284-79.

The connection of glass fiber with an unsaturated polyester resin (binder) occurs with the formation of an interfacial layer adjacent directly to the interface between the binder and glass fiber. The interphase layer differs significantly from the binder phase in composition, since it absorbs low molecular weight inclusions of both the binder and the glass fiber surface. The phase boundary is the weakest point of the material, and it is here that destruction begins, both under mechanical loads and under other influences, for example, under the influence of the external atmosphere, water and others. Therefore, the intensity of interfacial interaction plays an important role in the formation of the strength properties of the material. It is determined by the level of direct adhesive interaction of the contacting media. In the claimed technical solution to increase the adhesive interaction, a silane lubricant is used, preferably grades 560A, 562A, 558, 552 V. It is either added to an unsaturated polyester resin or treated with it on the glass fiber surface before adding it. Silane lubricant is combined with unsaturated polyester resins and acts as a sizing agent, since it has different types of functional groups, one of which is capable of reacting with the unsaturated polyester resin during its curing, and the other group is capable of reacting with active groups on the glass fiber surface.

Examples of a composite material for the manufacture of containers can be the following, where the composition includes, by weight. %:

Example 1

orthophthalic unsaturated polyester resin twenty% polystyrene solution 10% glass fiber 40% microtalc brand MT-GShM 15% fire retardant (aluminum hydroxide) 12% silane lubricant grade 562A 0.1% other fillers and additives 2.9%

Example 2

orthophthalic unsaturated polyester resin twenty% polystyol solution ten% fiberglass thirty% microtalc brand MT-KShS twenty% fire retardant (aluminum hydroxide) 12% silane lubricant grade 562A 0.1% coloring paste 3% micromarble 2% other fillers and additives 2.9%

Example 3

isophthalic unsaturated polyester resin 15% polymethylmethaacrylate solution 15% fiberglass thirty% microtalc brand MT-GShM twenty% fire retardant (aluminum hydroxide) 13% silane grade 558 0.1% coloring paste 2% micromarble 2% other fillers and additives 2.9%

Example 4

terephthalic unsaturated polyester resin 15% polymethylmethaacrylate solution 15% fiberglass thirty% microtalc brand MT-GShM ten% fire retardant (aluminum hydroxide) 12% silane lubricant grade 552 B 0.1% fumed silica / glass microspheres 15% Other fillers and additives 2.9%

To further increase the rigidity of the device, vertical stiffening ribs 6 can be made on the inner surface of the walls of the housing 1. The body 1 can be provided with stiffening partitions 7, which can also be reinforced on both sides with vertical stiffeners. In addition to its main function of ensuring the rigidity and strength of the device, vertical stiffening ribs 6, stiffening ribs 5 located on the bottoms of the housing 1, and vertical stiffening ribs located on the stiffening partitions 7, jointly or independently, limit the volume of placement of stored products, providing an air thermal insulation gap between walls and / or the bottom of the container body 1 and stored products, which affects the fire resistance of the container. In addition, the stiffening partitions 7 can be made in the form of cradles with the possibility of placing products of complex shapes on them.

Additional rigidity of the device can be achieved by placing vertical stiffeners 8 on the outer vertical surface of the walls of the body 1 and the cover 2 in the area of the locking elements. In addition to their main function of ensuring the rigidity and strength of the device, they protect the locking elements from mechanical damage.

On the outer horizontal surfaces of the cover 2 and the body 1, stacking elements 10 can be made. They can have different shapes, for example, in the form of rectangular grooves and protrusions in plan, aligned during stacking, or in the form of truncated pyramidal protrusions on one of the elements 1, 2 and grooves complementary to them in shape on the other.

The claimed container for storage and transportation of explosive and sensitive products can have both a removable and a hinged cover 2. In this case, detachable or one-piece loops, respectively, can be used as locking elements 3. In one embodiment, the container is made with the possibility of folding the top cover 2. In this case, the top cover 2 is connected to one side of the body 1 by a hinge by means of hinge hinges, for example, piano, card, heel and pendulum hinges.

The carrying elements 4 can be placed on the lid or on the opposite sides of the walls of the housing 1. They can be made in the form of pivoting brackets. Most preferably, the pivot brackets are limited to their rotation in a horizontal position. For this purpose, the pivoting brackets are made with bends at their ends, or a rotation limiter is provided in the bracket of the brackets.

Ventilation grooves 9 can be made on the bottoms of the lid and the body from the outside to ensure the passage of air flow during stacking storage of products in order to prevent the formation of moisture and fungus. Simultaneously with their main function, the ventilation grooves 9 create stiffness reliefs on the thin-walled bottoms of the cover 2 and body 1, which also affects the rigidity of the bottoms and the structure as a whole.

Unsaturated polyester resins are thermosetting plastics, have good resistance to high temperatures (thermal stability is in the range of + 60-100 ° C), moisture, light, oxygen, and high chemical resistance to chemical attack. Fiberglass has low thermal conductivity and high chemical resistance. The specified qualities of the claimed material components in combination with the design features of the device, causing the formation of an air heat-insulating gap between the walls and / or the bottom of the container body 1 and the stored products, affect the provision of fire resistance of the container.

Samples of containers for storage and transportation of explosive and sensitive products manufactured in accordance with the proposed utility model have successfully passed operational tests:

- for strength under mechanical shock with a peak shock acceleration of 60 m / s ² ;

- durability when dropped (on all edges, all edges and all corners) with overall mass models of products from a height of 3.5 m onto concrete / asphalt and from a height of 7 m onto the ground;

- for strength in conditions of transportation by road with dimensional and weight models of products at a distance of 10,000 km, including 3,000 km on dirt roads.

The use of the proposed technical solution in the manufacture of packaging makes it possible to obtain fire-resistant containers for storing, transporting and carrying out loading and unloading operations of explosive and sensitive products, resistant to shock loads and ensuring the safety of their operational characteristics and operational characteristics of the products contained in it throughout the entire service life of all operating conditions.

Claims (8)

1. Container for storage and transportation of explosive and sensitive products, which has carrying elements and includes a body and a lid fixed relative to it with locking elements, and stiffeners are placed on the bottoms of the body and lid, characterized in that the container is made of a composite material based on unsaturated polyester resin with the addition of fiberglass in the presence of microtalc and silane lubricant, and the stiffeners are evenly distributed over the surfaces of the bottoms of the body and lid, made in one piece with them and with their walls and have the form of a cellular honeycomb structure. 2. A container according to claim 1, characterized in that stiffeners are made on the inner surface of the body walls. 3. A container according to claim 1, characterized in that the body is additionally equipped with stiffening partitions, reinforced on both sides by vertical stiffeners. 4. A container according to claim 1, characterized in that stiffeners are made on the outer vertical surface of the lid and body in the area of the locking elements. 5. A container according to claim 1, characterized in that stacking elements are made on the outer horizontal surfaces of the cover and body. 6. Container according to claim 1, characterized in that the cover is hingedly fixed relative to the body. 7. A container according to claim 1, characterized in that the carrying elements are made in the form of pivoting brackets with limitation of their rotation in a horizontal position. 8. Container according to claim. 1, characterized in that ventilation grooves are made on the bottom of the cover and body from the outside.

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