EP3106410A1 - Flexible container for transporting goods by helicopter - Google Patents

Flexible container for transporting goods by helicopter Download PDF

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Publication number
EP3106410A1
EP3106410A1 EP16164819.1A EP16164819A EP3106410A1 EP 3106410 A1 EP3106410 A1 EP 3106410A1 EP 16164819 A EP16164819 A EP 16164819A EP 3106410 A1 EP3106410 A1 EP 3106410A1
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EP
European Patent Office
Prior art keywords
container
straps
side panels
edges
lateral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16164819.1A
Other languages
German (de)
French (fr)
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EP3106410B1 (en
Inventor
François CALIPPE
Caroline CALIPPE LEBAILLE
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Fc Services
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Fc Services
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Publication of EP3106410A1 publication Critical patent/EP3106410A1/en
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Publication of EP3106410B1 publication Critical patent/EP3106410B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/22—Large containers flexible specially adapted for transport
    • B65D88/24—Large containers flexible specially adapted for transport by air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1618—Flexible intermediate bulk containers [FIBC] double-walled or with linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B65D88/1612—Flexible intermediate bulk containers [FIBC]
    • B65D88/1675—Lifting fittings
    • B65D88/1681—Flexible, e.g. loops, or reinforcements therefor

Definitions

  • the present invention relates to the field of flexible containers and relates more particularly to a flexible container for the transport of goods and a method of manufacturing such a container.
  • the container according to the invention is suitable for the transport of goods by helicopter and in particular for the transport of bulk or compartmentalized goods.
  • a net is not suitable for transporting granular materials in bulk, for example of the sand or gravel type. Then, the cost of manufacturing a net is high compared to that of a flexible container. Finally, a net is not suitable for transporting small loads in the high mountains, especially when the drop space is small, because the net can catch on asperities or objects located in the drop zone. .
  • Flexible containers are also known, commonly known as “Big Bags” or “Flexible Intermediate Bulk Containers” (FIBC) in English, which are commonly used in public works, particularly for transporting granular materials in bulk, for example of the type sand or gravel.
  • FIBC Flexible Intermediate Bulk Containers
  • These containers are made from woven fabrics or plastic films such as polypropylene, which make them advantageously light and inexpensive.
  • Such containers do not fulfill the conditions of solidity and safety required for helicopter transportation.
  • a flexible container is in a known manner in the form of a canvas bag of substantially parallelepiped shape when filled.
  • a bag comprises a bottom, on which is intended to rest the container once filled, and four rectangular side panels sewn between them and said bottom.
  • Four handles are sewn at the top corners of the panels for lifting.
  • Such a container has several disadvantages.
  • the handles being fixed in the corners, it is necessary to use slings to transport it, which is time consuming and expensive.
  • the existing flexible containers are generally not strong enough to carry equipment or heavy materials, weighing for example more than 1000 kg, and generally tear at the canvas or seams of the panels or handles, which can present a danger and therefore a significant disadvantage.
  • the existing flexible container solutions would not allow small loads to be safely transported, since, if the mass of the load that it carries in the air is small, the flexible container could be driven by the air flow generated including the speed of the helicopter and back into the blades, which would pose a serious danger to the aircraft and its occupants.
  • the invention aims to solve at least in part these disadvantages by proposing a flexible container that is both light, strong, reliable and rigid enough to heliport loads in areas of difficult access quickly and securely.
  • the bottom is the part of the container on which it is intended to rest on the ground once filled.
  • the terms "lateral”, “lower”, “upper”, “height”, “under” qualify the elements of the container considered when the latter is placed on the ground on its bottom and filled with to define a substantially parallelepipedal volume (as illustrated in FIG. figure 1 described below).
  • At least one double-wall is meant that the bottom and each side panel each comprise at least two superimposed walls, i.e. defining at least two thicknesses, and could comprise more, for example three or four.
  • the minimum double thickness of the side panels and the bottom and the use of structural reinforcement means fixed on both the four side panels and on the bottom make the container sufficiently strong for heliporting heavy loads, for example up to 2000 kg.
  • the loops can advantageously be connected to a lifting hook of a helicopter without the aid of slings or other intermediate attachment equipment, especially when the container is filled and all substantially keeping the parallelepipedal shape of the container, the structural reinforcement straps replacing de facto such slings or other intermediate fastening equipment.
  • the two structural reinforcement straps are stitched diagonally on the outer face of the bottom so as to connect two opposite corners of said outer face of the bottom to further strengthen said bottom and thus the container.
  • the structural reinforcement straps are sewn on at least 90% of the height of the lateral edges of the side panels, which makes the container solid.
  • the useful length of each strap is greater than half of the diagonal bottom of the container.
  • “useful length” is meant the length on which an unfolded strap extends from the upper edges of the side panels to the free end of the corresponding handle.
  • Such useful length ensures that the straps will be long enough to meet at a central point at which the handles can be attached to a single heliport hook, allowing to heliport the container without slings, whatever its filling volume, especially when it is filled, while substantially maintaining the parallelepipedal shape of the container.
  • the useful length of each strap is greater than half of the diagonal bottom of the container and the straps are each configured to extend from the upper edges of the side panels to a distance less than or equal to 1000 mm (ie the effective length of each strap is less than or equal to 1000 mm).
  • each strap is greater than half the diagonal of the bottom of the container and the straps are each configured to extend from the upper edges of the side panels over a distance greater than 1000 mm.
  • the straps can each be configured to extend from the upper edges of the side panels over a distance greater than 1000 mm (ie the useful length of each strap is greater than 1000 mm).
  • the handles can thus be hooked to a single heliportage hook whatever the width of the side panels and regardless of the filling volume of the container, choosing a useful length of the straps adapted.
  • the straps are made of a double thickness.
  • the straps may for example be made of polypropylene, for example of grammage of the order of 56 g / m to withstand high loads, for example of the order of 2000 kg.
  • the loops come from material straps to make the container easy to manufacture and significantly increase the strength of the container during a helicopter by limiting the number of connections between the elements of the container.
  • the double wall of the body and side panels is made of fabric, for example woven, or an assembly of plastic films.
  • These double-walls may, for example, be made of woven polypropylene and with a basis weight, preferably between 160 and 250 g / m 2 .
  • This grammage can be chosen according to the load.
  • a grammage of 160 g / m 2 can be used for a load of 500 kg
  • a basis weight of 250 g / m 2 for a load of 2000 kg for example, a grammage of 160 g / m 2 can be used for a load of 500 kg
  • a grammage of 200 g / m 2 for a load of 1500 kg
  • a basis weight of 250 g / m 2 for a load of 2000 kg.
  • the bottom is square to balance the container.
  • the container further comprises a closing skirt of its upper face, opposite the bottom of the body relative to the side panels, said skirt being sewn on the upper edges of the side panels and on the upper edges of the side faces of the body.
  • a closing skirt makes it possible both to hold the goods in the container to prevent them from escaping, especially when it is transported in the air, and to prevent air from getting into the container. the container, which could destabilize the load and therefore the helicopter.
  • the seam of each of the two straps is made on at least 90% of the height of the lateral edges of the side panels and diagonally on the outer face of the bottom so as to cross the two straps under the bottom to stiffen the container .
  • the method comprises a preliminary step of assembling the walls forming the body and the two side panels so as to form the double wall.
  • the container according to the invention is a flexible container intended to be used for the transport of goods by helicopter and in particular the transport of bulk goods.
  • the flexible container 1 comprises a body 2, two side panels 4 and two straps 6 of structural reinforcement.
  • the body 2 and the side panels 4 are arranged to define a substantially parallelepiped volume for receiving goods.
  • the body 2 consists of a double-wall fabric and more precisely two superimposed canvases called "double-body fabric".
  • This double wall is preferably made of polypropylene.
  • the body 2 comprises a square-shaped bottom 2A and two lateral faces 2B made of material of said bottom 2A, of rectangular shape, giving the body 2 a U-shape when the container 1 is unfolded and / or filled, as shown in FIG. figure 1 .
  • the bottom 2A has an inner face 2A-1 and an outer face 2A-2 on which the container 1 is intended to rest on the floor S, especially when at least partially filled.
  • each side face 2B has two side edges 2B-1 and an upper edge 2B-2.
  • the bottom 2A is of square shape
  • the length of the side C is, for example, of the order of 1200 mm
  • the lateral faces 2B are rectangular in shape, for example 1200 mm in diameter.
  • width L (equal to the C side of the square) over 1250 mm height H.
  • the two side panels 4 each have a rectangular or square shape and are, like the body 2, each constituted by a double-wall fabric, preferably made of polypropylene.
  • the example described is not limiting to the scope of the present invention and that, in another embodiment of the container 1 according to the invention, the body 2 and the side panels 4 could comprise more than two walls. for example three or four.
  • Each side panel 4 comprises two lateral edges 4A of the same height H as the lateral faces 2B of the body 2, an upper edge 4B and a lower edge 4C and is sewn, on the one hand, by its lateral edges 4A to the lateral edges 2B- 1 of the lateral faces 2B of the body 2 and, on the other hand, by its lower edge 4C at the bottom 2A of the body 2.
  • the lateral edges 4A of the side panels 4 comprise flaps 4A-1, 4A-2 made of material of the side panels 4 for sewing the side panels 4 respectively on the side edges 2B-1 of the side faces 2B of the body 2 them and on the bottom 2A of the body 2.
  • the two structural reinforcement straps 6 are stitched both on the outer face 2A-2 of the bottom 2A of the body 2, on the lateral edges 2B-1 of the lateral faces 2B of the body 2 and on the lateral edges 4A of the side panels 4 More specifically, the two structural reinforcement straps 6 are sewn, on the one hand, diagonally on the outer face 2A-2 of the bottom 2A so as to connect two opposite corners of said outer face 2A-2 and, on the other hand, on the whole length H of the lateral edges 4A of the side panels 4 so as to extend from the four upper corners 4D of the container 1. In such an arrangement, with reference to the figure 1 the two straps 6 intersect at the center O of the bottom 2A so as to stiffen it.
  • Each structural reinforcing strap 6 comprises two ends 6A each of which extends a loop 6B, made from the material of said strap, the structural reinforcement straps 6 being arranged so that the four handles 6B can be connected simultaneously to a single hook of lifting a helicopter so as to heliport the container 1, without the need for slings.
  • Each handle 6B has the shape of a loop that can extend over a length A (with reference to the figure 1 ), for example of the order of 250 mm, to allow a quick and easy hooking to a lifting hook of a helicopter.
  • each structural reinforcing strap 6 is arranged to extend, from the upper edges 4B of the side panels 4 to each of its ends 6A, over a distance D (ie the useful length) of connection to a hook of lifting a helicopter greater than 1000 mm, for example 1250 mm.
  • the straps 6 may each be configured to extend from the upper edges 4B of the side panels 4 over a distance D less than or equal to 1000 mm, but in this case the the effective length of each strap 6 is greater than half the diagonal of the bottom 2A of the container 1 so as to allow easy heliporting of a container 1 of small dimensions, especially when the internal volume of the latter is filled, for example to more than 80%.
  • Each structural reinforcing strap 6 consists of a double thickness of material in order to stiffen it and be able to support significant loads, for example between 1000 and 2000 kg.
  • the container 1 further comprises a skirt 10 closing its upper face, opposite the bottom 2A of the body 2 relative to the side panels 4, also called “skirt filling".
  • This skirt 10 is sewn on the upper edges 4B of the side panels 4 and on the upper edges 2B-2 of the side faces 2B of the body 2.
  • This skirt 10 has a useful height h, for example 1100 mm.
  • the skirt 10 is made of woven polypropylene, for example of grammage 120 g / m 2 , and comprises at its upper part a cord 12 sliding in a hem 14 for tightening the skirt 10 to maintain materials. in the container 1.
  • the skirt 10 may be made of woven polypropylene, for example 160 g / m 2 , and comprise at its middle portion a strap on which is mounted a closure loop, for example made in aluminium.
  • Arrangements or interior compartments may be provided to allow the transport of specific materials such as, for example, fragile objects (glass %) or hazardous materials (gas cylinders ).
  • the external face 2A-2 of the bottom 2A of the body 2 is on it, and then the two structural reinforcing straps 6 are sewn together.
  • the outer face 2A-2 of the bottom 2A crossing diagonally on said outer face 2A-2 and on the lateral edges 2B-1 of the lateral faces 2B so that the handles 6B are sufficiently far from the upper edges 4B and 2B-2 respectively of the side panels 4 and the lateral faces 2B of the body 2 in order to be connected simultaneously to a lifting hook of a helicopter.
  • Such a seam is thus made on four thicknesses: two thicknesses for the double-wall of the body 2 and two thicknesses for the structural reinforcement straps 6.
  • the two lateral panels 4 are then sewn, on the one hand, at their lateral edges 4A, on the lateral edges 2B-1 of the lateral faces 2B of the body 2 and on the two structural reinforcement straps 6, and on the other hand at the level of their lower edge 4C, at the bottom 2A of the body 2.
  • the seaming of the two lateral panels 4 at the lateral edges 2B-1 of the lateral faces 2B of the body 2 and the two structural reinforcement straps 6 is carried out on six thicknesses: two thicknesses for the double wall of the body 2, two thicknesses for the structural reinforcement straps 6 and two thicknesses for the double wall of the lateral panels 4.
  • the seam of a lateral edge 4A of each side panel 4 to the corresponding lateral edge 2B-1 of the corresponding lateral face 2B of the body 2 and to the corresponding structural reinforcement strap 6 could be made at the same time as the seam of said lateral edge 2B-1 of the lateral face 2B of the body 2 with said structural reinforcing strap 6 and the opposite lateral edge 4A of the lateral panel 4 could then be sewn to the corresponding lateral edge 2B-1 of the corresponding lateral face 2B of the body 2 and the structural reinforcement strap 6 sewn beforehand on the opposite side edge 4A.
  • the seam of each of the two structural reinforcement straps 6 is made over the entire height H of the lateral edges 4A of the side panels 4 and respectively on each of the diagonals of the outer face 2A. -2 bottom 2A so as to cross the two structural reinforcement straps 6 under the bottom to stiffen the container 1 and allow its maintenance in shape, especially in the case of the transport of low mass loads.
  • the structural reinforcement straps 6 are not sewn at the bottom corners 4E of the container 1, as shown in FIG. figure 1 .
  • cross-braced structural reinforcement straps 6 makes it possible to ensure the equilibrium and the maintenance of the shape of the container 1 during a heliport, in particular in order to avoid the displacement of the container 1 in the blades of the helicopter which carries it. .
  • the walls of the body 2 and side panels 4 being at least doubled, the container 1 is sufficiently strong to carry large loads of mass for example between 500 and 2 tons.
  • the handles 6B can attach the container 1 directly to a lifting hook of a helicopter avoiding the use of slings, which has a significant advantage.

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Abstract

L'invention concerne un conteneur (1) souple pour le transport de marchandises par hélicoptère. Le conteneur (1) comprend un corps, deux panneaux latéraux (4) et deux sangles (6) de renfort structurel cousues à la fois sur le corps (2) et les panneaux latéraux (4). Les sangles (6) comprennent chacune deux extrémités de chacune desquelles s'étend une anse (6B), les sangles (6) étant agencées pour que les quatre anses (6B) puissent être reliées simultanément à un unique crochet de levage d'un hélicoptère de manière à héliporter le conteneur (1).The invention relates to a container (1) flexible for the transport of goods by helicopter. The container (1) comprises a body, two side panels (4) and two straps (6) of structural reinforcement stitched to both the body (2) and the side panels (4). The straps (6) each comprise two ends of each of which extends a handle (6B), the straps (6) being arranged so that the four handles (6B) can be connected simultaneously to a single lifting hook of a helicopter in order to heliport the container (1).

Description

DOMAINE TECHNIQUE ET OBJET DE L'INVENTIONTECHNICAL FIELD AND OBJECT OF THE INVENTION

La présente invention se rapporte au domaine des conteneurs souples et concerne plus particulièrement un conteneur souple pour le transport de marchandises ainsi qu'un procédé de fabrication d'un tel conteneur.The present invention relates to the field of flexible containers and relates more particularly to a flexible container for the transport of goods and a method of manufacturing such a container.

Le conteneur selon l'invention est adapté au transport de marchandises par hélicoptère et notamment au transport de marchandises en vrac ou compartimentées.The container according to the invention is suitable for the transport of goods by helicopter and in particular for the transport of bulk or compartmentalized goods.

ETAT DE LA TECHNIQUESTATE OF THE ART

De nos jours, il est courant de transporter des marchandises par hélicoptère, notamment dans les zones difficiles d'accès telles que, par exemple, les zones de haute montagne. Ces marchandises, qui peuvent aussi bien être des équipements que des matériaux, sont héliportées de manière connue dans un filet suspendu sous l'hélicoptère.Nowadays it is common to transport goods by helicopter, especially in hard-to-reach areas such as, for example, high mountain areas. These goods, which may be both equipment and materials, are helicopter-borne in a known manner in a net suspended under the helicopter.

L'utilisation d'un filet présente plusieurs inconvénients. Tout d'abord, un filet n'est pas adapté pour le transport de matériaux granulaires en vrac, par exemple de type sable ou gravier. Ensuite, le coût de fabrication d'un filet est élevé par rapport à celui d'un conteneur souple. Enfin, un filet n'est pas adapté pour le transport de petites charges en haute montagne, notamment lorsque l'espace de largage est faible, car le filet peut s'accrocher à des aspérités ou à des objets situés dans l'espace de largage.The use of a net has several disadvantages. Firstly, a net is not suitable for transporting granular materials in bulk, for example of the sand or gravel type. Then, the cost of manufacturing a net is high compared to that of a flexible container. Finally, a net is not suitable for transporting small loads in the high mountains, especially when the drop space is small, because the net can catch on asperities or objects located in the drop zone. .

On connaît par ailleurs des conteneurs souples, communément appelés « Big Bags » ou « Flexible Intermediate Bulk Containers » (FIBC) en langue anglaise, qui sont utilisés couramment dans les travaux publics, notamment pour transporter des matériaux granulaires en vrac, par exemple de type sable ou gravier. Ces conteneurs sont fabriqués à partir de toiles tissées ou de films en matière plastique telle qu'en polypropylène, qui les rendent avantageusement légers et peu onéreux. De tels conteneurs ne remplissent toutefois pas les conditions de solidité et de sécurité requises pour l'héliportage.Flexible containers are also known, commonly known as "Big Bags" or "Flexible Intermediate Bulk Containers" (FIBC) in English, which are commonly used in public works, particularly for transporting granular materials in bulk, for example of the type sand or gravel. These containers are made from woven fabrics or plastic films such as polypropylene, which make them advantageously light and inexpensive. Such containers, however, do not fulfill the conditions of solidity and safety required for helicopter transportation.

Un conteneur souple se présente de manière connue sous la forme d'un sac en toile de forme sensiblement parallélépipédique lorsqu'il est rempli. Un tel sac comprend un fond, sur lequel est destiné à reposer le conteneur une fois rempli, et quatre panneaux latéraux rectangulaires cousus entre eux et audit fond. Quatre anses sont cousues au niveau des coins supérieurs des panneaux pour le levage.A flexible container is in a known manner in the form of a canvas bag of substantially parallelepiped shape when filled. Such a bag comprises a bottom, on which is intended to rest the container once filled, and four rectangular side panels sewn between them and said bottom. Four handles are sewn at the top corners of the panels for lifting.

Un tel conteneur présente toutefois plusieurs inconvénients. Tout d'abord, les anses étant fixées dans les coins, il est nécessaire d'utiliser des élingues pour le transporter, ce qui est chronophage et coûteux. Ensuite, les conteneurs souples existants ne sont généralement pas suffisamment solides pour transporter des équipements ou des matériaux lourds, pesant par exemple plus de 1000 kg, et se déchirent généralement au niveau de la toile ou des coutures des panneaux ou des anses, ce qui peut présenter un danger et donc un inconvénient important.Such a container, however, has several disadvantages. First, the handles being fixed in the corners, it is necessary to use slings to transport it, which is time consuming and expensive. Secondly, the existing flexible containers are generally not strong enough to carry equipment or heavy materials, weighing for example more than 1000 kg, and generally tear at the canvas or seams of the panels or handles, which can present a danger and therefore a significant disadvantage.

En outre, les solutions existantes de conteneur souple ne permettraient pas d'héliporter des petites charges en toute sécurité, car, si la masse de la charge qu'il transporte en l'air est faible, le conteneur souple pourrait se trouver entrainé par les flux d'air générés notamment par la vitesse de l'hélicoptère et remonter jusque dans les pales, ce qui présenterait un grave danger pour l'aéronef et ses occupants.In addition, the existing flexible container solutions would not allow small loads to be safely transported, since, if the mass of the load that it carries in the air is small, the flexible container could be driven by the air flow generated including the speed of the helicopter and back into the blades, which would pose a serious danger to the aircraft and its occupants.

PRESENTATION GENERALE DE L'INVENTIONGENERAL PRESENTATION OF THE INVENTION

L'invention vise à résoudre au moins en partie ces inconvénients en proposant un conteneur souple qui soit à la fois léger, solide, fiable et suffisamment rigide pour héliporter des charges dans des zones d'accès difficile de manière rapide et sécurisée.The invention aims to solve at least in part these disadvantages by proposing a flexible container that is both light, strong, reliable and rigid enough to heliport loads in areas of difficult access quickly and securely.

A cet effet, l'invention a pour objet un conteneur souple pour le transport de marchandises par hélicoptère, ledit conteneur comprenant :

  • un corps, constitué d'au moins une double-paroi, comprenant un fond et deux faces latérales issus de matière dudit fond et comportant deux bords latéraux et un bord supérieur, le fond comportant une face interne et une face externe sur laquelle le conteneur est destiné à reposer une fois rempli,
  • deux panneaux latéraux, constitués chacun d'au moins une double-paroi, comprenant deux bords latéraux, un bord supérieur et un bord inférieur, chaque panneau latéral étant cousu par ses bords latéraux aux bords latéraux des faces latérales du corps et par son bord inférieur au fond du corps,
  • deux sangles de renfort structurel, cousues à la fois sur la face externe du fond du corps, sur les bords latéraux des faces latérales du corps et sur les bords latéraux des panneaux latéraux, et comprenant chacune deux extrémités de chacune desquelles s'étend une anse, les sangles étant agencées pour que les quatre anses puissent être reliées simultanément à un unique crochet de levage d'un hélicoptère de manière à héliporter le conteneur.
For this purpose, the subject of the invention is a flexible container for the transport of goods by helicopter, said container comprising:
  • a body, consisting of at least one double-wall, comprising a bottom and two lateral faces derived from said bottom material and having two lateral edges and an upper edge, the bottom having an inner face and an outer face on which the container is intended to rest once filled,
  • two side panels, each consisting of at least one double-wall, comprising two side edges, an upper edge and a lower edge, each side panel being sewn by its lateral edges to the lateral edges of the lateral faces of the body and by its lower edge to the bottom of the body,
  • two structural reinforcement straps, sewn both on the external face of the body bottom, on the lateral edges of the lateral faces of the body and on the lateral edges of the side panels, and each comprising two ends of each of which extends a handle , the straps being arranged so that the four handles can be simultaneously connected to a single lifting hook of a helicopter so as to heliport the container.

Par définition, le fond constitue la partie du conteneur sur lequel il est destiné à reposer au sol une fois rempli. En outre, ici et dans toute la suite, les termes « latéraux », « inférieur», « supérieur », « hauteur », « sous » qualifient des éléments du conteneur considérés lorsque ce dernier est disposé au sol sur son fond et rempli de manière à définir un volume sensiblement parallélépipédique (comme illustré sur la figure 1 décrite ci-après).By definition, the bottom is the part of the container on which it is intended to rest on the ground once filled. In addition, here and throughout, the terms "lateral", "lower", "upper", "height", "under" qualify the elements of the container considered when the latter is placed on the ground on its bottom and filled with to define a substantially parallelepipedal volume (as illustrated in FIG. figure 1 described below).

Par les termes « au moins une double-paroi », on entend que le fond et chaque panneau latéral comprennent chacun au moins deux parois superposées, i.e. définissant au moins deux épaisseurs, et pourrait en comprendre plus, par exemple trois ou quatre. La double-épaisseur minimum des panneaux latéraux et du fond et l'utilisation de moyens de renfort structurel fixés à la fois sur les quatre panneaux latéraux et sur le fond rendent le conteneur suffisamment solide pour héliporter des charges lourdes, par exemple jusqu'à 2000 kg.By the terms "at least one double-wall" is meant that the bottom and each side panel each comprise at least two superimposed walls, i.e. defining at least two thicknesses, and could comprise more, for example three or four. The minimum double thickness of the side panels and the bottom and the use of structural reinforcement means fixed on both the four side panels and on the bottom make the container sufficiently strong for heliporting heavy loads, for example up to 2000 kg.

Par le terme « simultanément», on entend que les anses peuvent avantageusement être reliées à un crochet de levage d'un hélicoptère sans l'aide d'élingues ou d'un autre équipement intermédiaire de fixation, notamment lorsque le conteneur est rempli et tout en conservant sensiblement la forme parallélépipédique du conteneur, les sangles de renfort structurel remplaçant de facto de telles élingues ou tout autre équipement intermédiaire de fixation.By the term "simultaneously" is meant that the loops can advantageously be connected to a lifting hook of a helicopter without the aid of slings or other intermediate attachment equipment, especially when the container is filled and all substantially keeping the parallelepipedal shape of the container, the structural reinforcement straps replacing de facto such slings or other intermediate fastening equipment.

De manière préférée, les deux sangles de renfort structurel sont cousues en diagonal sur la face externe du fond de manière à relier deux coins opposés de ladite face externe du fond afin de renforcer davantage ledit fond et donc le conteneur.Preferably, the two structural reinforcement straps are stitched diagonally on the outer face of the bottom so as to connect two opposite corners of said outer face of the bottom to further strengthen said bottom and thus the container.

Un tel agencement permet de maintenir le conteneur en forme, notamment en vol lorsque le conteneur est vide ou qu'il contient des charges légères de sorte qu'il ne soit pas dirigé vers les pales de l'hélicoptère.Such an arrangement makes it possible to keep the container in shape, especially in flight when the container is empty or that it contains light loads so that it is not directed towards the blades of the helicopter.

Selon une caractéristique de l'invention, les sangles de renfort structurel sont cousues sur au moins 90 % de la hauteur des bords latéraux des panneaux latéraux, ce qui rend le conteneur solide.According to one characteristic of the invention, the structural reinforcement straps are sewn on at least 90% of the height of the lateral edges of the side panels, which makes the container solid.

Avantageusement, la longueur utile de chaque sangle est supérieure à la moitié de la diagonale du fond du conteneur. Par les termes « longueur utile », on entend la longueur sur laquelle une sangle dépliée s'étend depuis les bords supérieurs des panneaux latéraux jusqu'à l'extrémité libre de l'anse correspondante. Une telle longueur utile permet de s'assurer que les sangles seront suffisamment longues pour se rejoindre en un point central au niveau duquel les anses pourront être fixées à un unique crochet d'héliportage, permettant ainsi d'héliporter le conteneur sans élingues, quel que soit son volume de remplissage, notamment lorsqu'il est rempli, tout en conservant sensiblement la forme parallélépipédique du conteneur.Advantageously, the useful length of each strap is greater than half of the diagonal bottom of the container. By the term "useful length" is meant the length on which an unfolded strap extends from the upper edges of the side panels to the free end of the corresponding handle. Such useful length ensures that the straps will be long enough to meet at a central point at which the handles can be attached to a single heliport hook, allowing to heliport the container without slings, whatever its filling volume, especially when it is filled, while substantially maintaining the parallelepipedal shape of the container.

Dans une première forme de réalisation, la longueur utile de chaque sangle est supérieure à la moitié de la diagonale du fond du conteneur et les sangles sont chacune configurées pour s'étendre depuis les bords supérieurs des panneaux latéraux sur une distance inférieure ou égale à 1000 mm (i.e. la longueur utile de chaque sangle est inférieure ou égale à 1000 mm).In a first embodiment, the useful length of each strap is greater than half of the diagonal bottom of the container and the straps are each configured to extend from the upper edges of the side panels to a distance less than or equal to 1000 mm (ie the effective length of each strap is less than or equal to 1000 mm).

Dans une deuxième forme de réalisation, la longueur utile de chaque sangle est supérieure à la moitié de la diagonale du fond du conteneur et les sangles sont chacune configurées pour s'étendre depuis les bords supérieurs des panneaux latéraux sur une distance supérieure à 1000 mm.In a second embodiment, the useful length of each strap is greater than half the diagonal of the bottom of the container and the straps are each configured to extend from the upper edges of the side panels over a distance greater than 1000 mm.

De manière générale, les sangles peuvent chacune être configurées pour s'étendre depuis les bords supérieurs des panneaux latéraux sur une distance supérieure à 1000 mm (i.e. la longueur utile de chaque sangle est supérieure à 1000 mm). Les anses peuvent ainsi être accrochées à un unique crochet d'héliportage quelle que soit la largeur des panneaux latéraux et quel que soit le volume de remplissage du conteneur, en choisissant une longueur utile des sangles adaptée.In general, the straps can each be configured to extend from the upper edges of the side panels over a distance greater than 1000 mm (ie the useful length of each strap is greater than 1000 mm). The handles can thus be hooked to a single heliportage hook whatever the width of the side panels and regardless of the filling volume of the container, choosing a useful length of the straps adapted.

De préférence, les sangles sont constituées d'une double épaisseur. Les sangles peuvent par exemple être réalisées en polypropylène, par exemple de grammage de l'ordre de 56 g/m afin de supporter des charges importantes, par exemple de l'ordre de 2000 kg.Preferably, the straps are made of a double thickness. The straps may for example be made of polypropylene, for example of grammage of the order of 56 g / m to withstand high loads, for example of the order of 2000 kg.

De préférence encore, les anses sont issues de matière des sangles afin de rendre la fabrication du conteneur aisée et augmenter significativement la solidité du conteneur lors d'un héliportage en limitant le nombre de liaisons entre les éléments du conteneur.More preferably, the loops come from material straps to make the container easy to manufacture and significantly increase the strength of the container during a helicopter by limiting the number of connections between the elements of the container.

Selon un autre aspect de l'invention, la double-paroi du corps et des panneaux latéraux est réalisée en toile, par exemple tissée, ou en un assemblage de films en matière plastique. Ces double-parois peuvent, par exemple, être réalisées en polypropylène tissé et avec un grammage compris, de préférence, entre 160 et 250 g/m2. Ce grammage peut être choisi en fonction de la charge. Ainsi, par exemple, un grammage de 160 g/m2 peut être utilisé pour une charge de 500 kg, un grammage de 200 g/m2 pour une charge de 1500 kg et un grammage de 250 g/m2 pour une charge de 2000 kg.According to another aspect of the invention, the double wall of the body and side panels is made of fabric, for example woven, or an assembly of plastic films. These double-walls may, for example, be made of woven polypropylene and with a basis weight, preferably between 160 and 250 g / m 2 . This grammage can be chosen according to the load. Thus, for example, a grammage of 160 g / m 2 can be used for a load of 500 kg, a grammage of 200 g / m 2 for a load of 1500 kg and a basis weight of 250 g / m 2 for a load of 2000 kg.

Avantageusement, le fond est de forme carrée pour équilibrer le conteneur.Advantageously, the bottom is square to balance the container.

Selon une caractéristique de l'invention, le conteneur comprend en outre une jupe de fermeture de sa face supérieure, opposée au fond du corps par rapport aux panneaux latéraux, ladite jupe étant cousue sur les bords supérieurs des panneaux latéraux et sur les bords supérieurs des faces latérales du corps. Une telle jupe permet à la fois de retenir les marchandises dans le conteneur afin d'éviter qu'elles ne s'en échappent, notamment lorsque celui-ci est transporté dans les airs, et d'empêcher l'air de s'introduire dans le conteneur, ce qui pourrait déstabiliser la charge et donc l'hélicoptère.According to a feature of the invention, the container further comprises a closing skirt of its upper face, opposite the bottom of the body relative to the side panels, said skirt being sewn on the upper edges of the side panels and on the upper edges of the side faces of the body. Such a skirt makes it possible both to hold the goods in the container to prevent them from escaping, especially when it is transported in the air, and to prevent air from getting into the container. the container, which could destabilize the load and therefore the helicopter.

L'invention concerne aussi un procédé de fabrication d'un conteneur souple pour le transport de marchandises par hélicoptère tel que présenté précédemment, ledit procédé comprenant les étapes de :

  • couture des sangles de renfort structurel sur le corps,
  • couture des deux panneaux latéraux, d'une part, au niveau de leurs bords latéraux, aux bords latéraux des faces latérales du corps et aux sangles de renfort structurel et, d'autre part, au niveau de leur bord inférieur, au fond du corps.
The invention also relates to a method of manufacturing a flexible container for the transport of goods by helicopter as presented above, said method comprising the steps of:
  • sewing structural reinforcement straps on the body,
  • sewing of the two side panels, on the one hand, at their lateral edges, at the lateral edges of the lateral faces of the body and the structural reinforcement straps and, on the other hand, at their lower edge, at the bottom of the body .

De préférence, la couture de chacune des deux sangles est réalisée sur au moins 90 % de la hauteur des bords latéraux des panneaux latéraux et en diagonal sur la face externe du fond de manière à croiser les deux sangles sous le fond afin de rigidifier le conteneur.Preferably, the seam of each of the two straps is made on at least 90% of the height of the lateral edges of the side panels and diagonally on the outer face of the bottom so as to cross the two straps under the bottom to stiffen the container .

Selon un aspect de l'invention, le procédé comprend une étape préliminaire d'assemblage des parois formant le corps et les deux panneaux latéraux de manière à former la double-paroi.According to one aspect of the invention, the method comprises a preliminary step of assembling the walls forming the body and the two side panels so as to form the double wall.

D'autres caractéristiques et avantages de l'invention apparaîtront lors de la description qui suit faite en regard des figures annexées données à titre d'exemples non limitatifs et dans lesquelles des références identiques sont données à des objets semblables.Other features and advantages of the invention will become apparent from the following description given with reference to the appended figures given by way of non-limiting examples and in which identical references are given to similar objects.

DESCRIPTION DES FIGURESDESCRIPTION OF THE FIGURES

  • La figure 1 illustre schématiquement une forme de réalisation du système selon l'invention.The figure 1 schematically illustrates an embodiment of the system according to the invention.
  • La figure 2 est une vue schématique du corps et des panneaux latéraux du conteneur de la figure 1 avant assemblage.The figure 2 is a schematic view of the body and side panels of the container of the figure 1 before assembly.
DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION Description d'une forme de réalisation du système selon l'inventionDescription of an embodiment of the system according to the invention

Le conteneur selon l'invention est un conteneur souple destiné à être utilisé pour le transport de marchandises par hélicoptère et notamment le transport de marchandises en vrac.The container according to the invention is a flexible container intended to be used for the transport of goods by helicopter and in particular the transport of bulk goods.

Le conteneur selon l'invention va maintenant être décrit en référence aux figures 1 et 2.The container according to the invention will now be described with reference to figures 1 and 2 .

I. Conteneur 1 I. Container 1

Le conteneur 1 souple selon l'invention comprend un corps 2, deux panneaux latéraux 4 et deux sangles 6 de renfort structurel.The flexible container 1 according to the invention comprises a body 2, two side panels 4 and two straps 6 of structural reinforcement.

Comme illustré à la figure 1, le corps 2 et les panneaux latéraux 4 sont agencés pour définir un volume sensiblement parallélépipédique de réception de marchandises.As illustrated in figure 1 , the body 2 and the side panels 4 are arranged to define a substantially parallelepiped volume for receiving goods.

Le corps 2 est constitué d'une double-paroi en toile et plus précisément de deux toiles superposées dite « toile double-corps ». Cette double-paroi est de préférence réalisée en polypropylène.The body 2 consists of a double-wall fabric and more precisely two superimposed canvases called "double-body fabric". This double wall is preferably made of polypropylene.

Le corps 2 comprend un fond 2A de forme carrée et deux faces latérales 2B issus de matière dudit fond 2A, de forme rectangulaire, conférant au corps 2 une forme de U lorsque le conteneur 1 est déplié et/ou rempli, comme illustré sur la figure 1.The body 2 comprises a square-shaped bottom 2A and two lateral faces 2B made of material of said bottom 2A, of rectangular shape, giving the body 2 a U-shape when the container 1 is unfolded and / or filled, as shown in FIG. figure 1 .

Le fond 2A comporte une face interne 2A-1 et une face externe 2A-2 sur laquelle le conteneur 1 est destiné à reposer sur le sol S, notamment lorsqu'il est au moins en partie rempli. Comme illustré à la figure 2, chaque face latérale 2B comporte deux bords latéraux 2B-1 et un bord supérieur 2B-2.The bottom 2A has an inner face 2A-1 and an outer face 2A-2 on which the container 1 is intended to rest on the floor S, especially when at least partially filled. As illustrated in figure 2 each side face 2B has two side edges 2B-1 and an upper edge 2B-2.

Dans cet exemple donné à titre illustratif, le fond 2A est de forme carrée dont la longueur du côté C est, par exemple, de l'ordre de 1200 mm, et les faces latérales 2B sont de forme rectangulaire, par exemple de 1200 mm de largeur L (égale au côté C du carré) sur 1250 mm de hauteur H.In this example given by way of illustration, the bottom 2A is of square shape, the length of the side C is, for example, of the order of 1200 mm, and the lateral faces 2B are rectangular in shape, for example 1200 mm in diameter. width L (equal to the C side of the square) over 1250 mm height H.

Les deux panneaux latéraux 4 présentent chacun une forme rectangulaire ou carrée et sont, tout comme le corps 2, constitués chacun d'une double-paroi en toile, réalisée de préférence en polypropylène.The two side panels 4 each have a rectangular or square shape and are, like the body 2, each constituted by a double-wall fabric, preferably made of polypropylene.

On notera que l'exemple décrit n'est pas limitatif de la portée de la présente invention et que, dans une autre forme de réalisation du conteneur 1 selon l'invention, le corps 2 et les panneaux latéraux 4 pourraient comprendre plus de deux parois, par exemple trois ou quatre.It will be noted that the example described is not limiting to the scope of the present invention and that, in another embodiment of the container 1 according to the invention, the body 2 and the side panels 4 could comprise more than two walls. for example three or four.

Chaque panneau latéral 4 comprend deux bords latéraux 4A de même hauteur H que les faces latérales 2B du corps 2, un bord supérieur 4B et un bord inférieur 4C et est cousu, d'une part, par ses bords latéraux 4A aux bords latéraux 2B-1 des faces latérales 2B du corps 2 et, d'autre part, par son bord inférieur 4C au fond 2A du corps 2.Each side panel 4 comprises two lateral edges 4A of the same height H as the lateral faces 2B of the body 2, an upper edge 4B and a lower edge 4C and is sewn, on the one hand, by its lateral edges 4A to the lateral edges 2B- 1 of the lateral faces 2B of the body 2 and, on the other hand, by its lower edge 4C at the bottom 2A of the body 2.

En référence à la figure 2, les bords latéraux 4A des panneaux latéraux 4 comprennent des rabats 4A-1, 4A-2 issus de matière des panneaux latéraux 4 permettant de coudre les panneaux latéraux 4 respectivement sur les bords latéraux 2B-1 des faces latérales 2B du corps 2 eux et sur le fond 2A du corps 2.With reference to the figure 2 , the lateral edges 4A of the side panels 4 comprise flaps 4A-1, 4A-2 made of material of the side panels 4 for sewing the side panels 4 respectively on the side edges 2B-1 of the side faces 2B of the body 2 them and on the bottom 2A of the body 2.

Les deux sangles de renfort structurel 6 sont cousues à la fois sur la face externe 2A-2 du fond 2A du corps 2, sur les bords latéraux 2B-1 des faces latérales 2B du corps 2 et sur les bords latéraux 4A des panneaux latéraux 4. Plus précisément, les deux sangles de renfort structurel 6 sont cousues, d'une part, en diagonal sur la face externe 2A-2 du fond 2A de manière à relier deux coins opposés de ladite face externe 2A-2 et, d'autre part, sur toute la longueur H des bords latéraux 4A des panneaux latéraux 4 de manière à s'étendre des quatre coins supérieurs 4D du conteneur 1. Dans un tel agencement, en référence à la figure 1, les deux sangles 6 se croisent au niveau du centre O du fond 2A de manière à le rigidifier.The two structural reinforcement straps 6 are stitched both on the outer face 2A-2 of the bottom 2A of the body 2, on the lateral edges 2B-1 of the lateral faces 2B of the body 2 and on the lateral edges 4A of the side panels 4 More specifically, the two structural reinforcement straps 6 are sewn, on the one hand, diagonally on the outer face 2A-2 of the bottom 2A so as to connect two opposite corners of said outer face 2A-2 and, on the other hand, on the whole length H of the lateral edges 4A of the side panels 4 so as to extend from the four upper corners 4D of the container 1. In such an arrangement, with reference to the figure 1 the two straps 6 intersect at the center O of the bottom 2A so as to stiffen it.

Chaque sangle de renfort structurel 6 comprend deux extrémités 6A de chacune desquelles s'étend une anse 6B, issue de matière de ladite sangle, les sangles de renfort structurel 6 étant agencées pour que les quatre anses 6B puissent être reliées simultanément à un unique crochet de levage d'un hélicoptère de manière à héliporter le conteneur 1, sans qu'il n'y ait besoin d'élingues. Chaque anse 6B présente la forme d'une boucle pouvant s'étendre sur une longueur A (en référence à la figure 1), par exemple de l'ordre de 250 mm, afin de permettre un accrochage aisé et rapide à un crochet de levage d'un hélicoptère.Each structural reinforcing strap 6 comprises two ends 6A each of which extends a loop 6B, made from the material of said strap, the structural reinforcement straps 6 being arranged so that the four handles 6B can be connected simultaneously to a single hook of lifting a helicopter so as to heliport the container 1, without the need for slings. Each handle 6B has the shape of a loop that can extend over a length A (with reference to the figure 1 ), for example of the order of 250 mm, to allow a quick and easy hooking to a lifting hook of a helicopter.

La longueur de chaque sangle 6, appelée longueur utile, est choisie de sorte que les sangles 6 soient suffisamment longues pour se rejoindre en un point d'ancrage permettant d'accrocher les quatre sangles 6 sur un unique crochet d'héliportage d'un hélicoptère. De préférence, chaque sangle de renfort structurel 6 est agencée pour s'étendre, depuis les bords supérieurs 4B des panneaux latéraux 4 jusqu'à chacune de ses extrémités 6A, sur une distance D (i.e. la longueur utile) de liaison à un crochet de levage d'un hélicoptère supérieure à 1000 mm, par exemple 1250 mm. De manière alternative, les sangles 6 peuvent chacune être configurées pour s'étendre depuis les bords supérieurs 4B des panneaux latéraux 4 sur une distance D inférieure ou égale à 1000 mm mais dans ce cas la longueur utile de chaque sangle 6 est supérieure à la moitié de la diagonale du fond 2A du conteneur 1 de manière à permettre une héliportage aisé d'un conteneur 1 de petites dimensions, notamment lorsque le volume intérieur de ce dernier est rempli, par exemple à plus de 80 %.The length of each strap 6, called useful length, is chosen so that the straps 6 are long enough to meet at an anchor point for hanging the four straps 6 on a single heliporting hook of a helicopter . Preferably, each structural reinforcing strap 6 is arranged to extend, from the upper edges 4B of the side panels 4 to each of its ends 6A, over a distance D (ie the useful length) of connection to a hook of lifting a helicopter greater than 1000 mm, for example 1250 mm. Alternatively, the straps 6 may each be configured to extend from the upper edges 4B of the side panels 4 over a distance D less than or equal to 1000 mm, but in this case the the effective length of each strap 6 is greater than half the diagonal of the bottom 2A of the container 1 so as to allow easy heliporting of a container 1 of small dimensions, especially when the internal volume of the latter is filled, for example to more than 80%.

Chaque sangle de renfort structurel 6 est constituée d'une double épaisseur de matière afin de la rigidifier et pouvoir support des charges importantes, par exemple comprises entre 1000 et 2000 kg.Each structural reinforcing strap 6 consists of a double thickness of material in order to stiffen it and be able to support significant loads, for example between 1000 and 2000 kg.

Comme illustré à la figure 1, le conteneur 1 comprend en outre une jupe 10 de fermeture de sa face supérieure, opposée au fond 2A du corps 2 par rapport aux panneaux latéraux 4, encore appelée « jupe de remplissage ».As illustrated in figure 1 , the container 1 further comprises a skirt 10 closing its upper face, opposite the bottom 2A of the body 2 relative to the side panels 4, also called "skirt filling".

Cette jupe 10 est cousue sur les bords supérieurs 4B des panneaux latéraux 4 et sur les bords supérieurs 2B-2 des faces latérales 2B du corps 2. Cette jupe 10 possède une hauteur utile h, par exemple de 1100 mm.This skirt 10 is sewn on the upper edges 4B of the side panels 4 and on the upper edges 2B-2 of the side faces 2B of the body 2. This skirt 10 has a useful height h, for example 1100 mm.

Dans cet exemple, la jupe 10 est réalisée en polypropylène tissé, par exemple de grammage 120 g/m2, et comprend au niveau de sa partie supérieure une cordelette 12 coulissant dans un ourlet 14 permettant de serrer la jupe 10 afin de maintenir des matières dans le conteneur 1. En variante, la jupe 10 peut être réalisée en polypropylène tissé, par exemple de grammage 160 g/m2, et comprendre au niveau de sa partie médiane une sangle sur laquelle est montée une boucle de fermeture, réalisée par exemple en aluminium.In this example, the skirt 10 is made of woven polypropylene, for example of grammage 120 g / m 2 , and comprises at its upper part a cord 12 sliding in a hem 14 for tightening the skirt 10 to maintain materials. in the container 1. Alternatively, the skirt 10 may be made of woven polypropylene, for example 160 g / m 2 , and comprise at its middle portion a strap on which is mounted a closure loop, for example made in aluminium.

Des aménagements ou compartiments intérieurs peuvent être prévus pour permettre le transport de matériaux spécifiques tels que, par exemple, des objets fragiles (verre...) ou des matières dangereuses (bonbonnes de gaz...).Arrangements or interior compartments may be provided to allow the transport of specific materials such as, for example, fragile objects (glass ...) or hazardous materials (gas cylinders ...).

Un exemple de fabrication du conteneur selon l'invention va maintenant être décrit.An example of manufacture of the container according to the invention will now be described.

II. Fabrication II. Manufacturing

Afin d'assembler les différents éléments du conteneur 1, on dispose tout d'abord le corps 2 sur une surface plane, la face externe 2A-2 du fond 2A du corps 2 étant dessus, puis on coud les deux sangles de renfort structurel 6 sur la face externe 2A-2 du fond 2A en les croisant en diagonal sur ladite face externe 2A-2 et sur les bords latéraux 2B-1 des faces latérales 2B de sorte que les anses 6B soient suffisamment éloignées des bords supérieurs respectivement 4B et 2B-2 des panneaux latéraux 4 et des faces latérales 2B du corps 2 afin de pouvoir être reliées simultanément à un crochet de levage d'un hélicoptère.In order to assemble the different elements of the container 1, first of all the body 2 is placed on a flat surface, the external face 2A-2 of the bottom 2A of the body 2 is on it, and then the two structural reinforcing straps 6 are sewn together. on the outer face 2A-2 of the bottom 2A in them crossing diagonally on said outer face 2A-2 and on the lateral edges 2B-1 of the lateral faces 2B so that the handles 6B are sufficiently far from the upper edges 4B and 2B-2 respectively of the side panels 4 and the lateral faces 2B of the body 2 in order to be connected simultaneously to a lifting hook of a helicopter.

Une telle couture est donc réalisée sur quatre épaisseurs : deux épaisseurs pour la double-paroi du corps 2 et deux épaisseurs pour les sangles de renfort structurel 6.Such a seam is thus made on four thicknesses: two thicknesses for the double-wall of the body 2 and two thicknesses for the structural reinforcement straps 6.

On coud ensuite les deux panneaux latéraux 4, d'une part, au niveau de leurs bords latéraux 4A, aux bords latéraux 2B-1 des faces latérales 2B du corps 2 et aux deux sangles de renfort structurel 6 et, d'autre part, au niveau de leur bord inférieur 4C, au fond 2A du corps 2. La couture des deux panneaux latéraux 4 aux bords latéraux 2B-1 des faces latérales 2B du corps 2 et aux deux sangles de renfort structurel 6 est réalisée sur six épaisseurs : deux épaisseurs pour la double-paroi du corps 2, deux épaisseurs pour les sangles de renfort structurel 6 et deux épaisseurs pour la double-paroi des panneaux latéraux 4.The two lateral panels 4 are then sewn, on the one hand, at their lateral edges 4A, on the lateral edges 2B-1 of the lateral faces 2B of the body 2 and on the two structural reinforcement straps 6, and on the other hand at the level of their lower edge 4C, at the bottom 2A of the body 2. The seaming of the two lateral panels 4 at the lateral edges 2B-1 of the lateral faces 2B of the body 2 and the two structural reinforcement straps 6 is carried out on six thicknesses: two thicknesses for the double wall of the body 2, two thicknesses for the structural reinforcement straps 6 and two thicknesses for the double wall of the lateral panels 4.

En variante, la couture d'un bord latéral 4A de chaque panneau latéral 4 au bord latéral 2B-1 correspondant de la face latérale 2B correspondante du corps 2 et à la sangle de renfort structurel 6 correspondante pourrait être réalisée en même temps que la couture dudit bord latéral 2B-1 de la face latérale 2B du corps 2 avec ladite sangle de renfort structurel 6 puis le bord latéral 4A opposé du panneau latéral 4 pourrait ensuite être cousu au bord latéral 2B-1 correspondant de la face latérale 2B correspondante du corps 2 et à la sangle de renfort structurel 6 cousue au préalable sur le bord latéral 4A opposé.Alternatively, the seam of a lateral edge 4A of each side panel 4 to the corresponding lateral edge 2B-1 of the corresponding lateral face 2B of the body 2 and to the corresponding structural reinforcement strap 6 could be made at the same time as the seam of said lateral edge 2B-1 of the lateral face 2B of the body 2 with said structural reinforcing strap 6 and the opposite lateral edge 4A of the lateral panel 4 could then be sewn to the corresponding lateral edge 2B-1 of the corresponding lateral face 2B of the body 2 and the structural reinforcement strap 6 sewn beforehand on the opposite side edge 4A.

Dans cet exemple non limitatif de la portée de la présente invention, la couture de chacune des deux sangles de renfort structurel 6 est réalisée sur toute la hauteur H des bords latéraux 4A des panneaux latéraux 4 et sur respectivement chacune des diagonales de la face externe 2A-2 du fond 2A de manière à croiser les deux sangles de renfort structurel 6 sous le fond afin de rigidifier le conteneur 1 et permettre son maintien en forme, notamment dans le cas du transport de charges de faible masse.In this non-limiting example of the scope of the present invention, the seam of each of the two structural reinforcement straps 6 is made over the entire height H of the lateral edges 4A of the side panels 4 and respectively on each of the diagonals of the outer face 2A. -2 bottom 2A so as to cross the two structural reinforcement straps 6 under the bottom to stiffen the container 1 and allow its maintenance in shape, especially in the case of the transport of low mass loads.

Afin de permettre une légère déformation du conteneur 1 lorsque celui-ci est rempli (les double-parois en toile étant souples), les sangles de renfort structurel 6 ne sont pas cousues au niveau des coins inférieurs 4E du conteneur 1, comme illustré à la figure 1.In order to allow a slight deformation of the container 1 when it is filled (the double-wall fabric being flexible), the structural reinforcement straps 6 are not sewn at the bottom corners 4E of the container 1, as shown in FIG. figure 1 .

III. Utilisation et avantages III. Use and benefits

L'utilisation de sangles de renfort structurel 6 croisées permet d'assurer l'équilibre et le maintien en forme du conteneur 1 lors d'un héliportage afin notamment d'éviter le déplacement du conteneur 1 dans les pales de l'hélicoptère qui le transporte. En outre, les parois du corps 2 et des panneaux latéraux 4 étant a minima doublées, le conteneur 1 est suffisamment solide pour transporter des charges importantes de masse par exemple comprise entre 500 et 2 tonnes. Enfin, les anses 6B permettent de fixer le conteneur 1 directement à un crochet de levage d'un hélicoptère en évitant l'utilisation d'élingues, ce qui présente un avantage important.The use of cross-braced structural reinforcement straps 6 makes it possible to ensure the equilibrium and the maintenance of the shape of the container 1 during a heliport, in particular in order to avoid the displacement of the container 1 in the blades of the helicopter which carries it. . In addition, the walls of the body 2 and side panels 4 being at least doubled, the container 1 is sufficiently strong to carry large loads of mass for example between 500 and 2 tons. Finally, the handles 6B can attach the container 1 directly to a lifting hook of a helicopter avoiding the use of slings, which has a significant advantage.

Il est à noter enfin que la présente invention n'est pas limitée aux exemples décrits ci-dessus et est susceptible de nombreuses variantes accessibles à l'homme de l'art. Notamment, les formes et les dimensions du corps 2, des panneaux latéraux 4 et des sangles 6 tels que représentés sur les figures de façon à illustrer un exemple de réalisation de l'invention, ne sauraient être interprétés comme limitatifs.Finally, it should be noted that the present invention is not limited to the examples described above and is capable of numerous variants accessible to those skilled in the art. In particular, the shapes and dimensions of the body 2, side panels 4 and straps 6 as shown in the figures so as to illustrate an exemplary embodiment of the invention, can not be interpreted as limiting.

Claims (15)

Conteneur (1) souple pour le transport de marchandises par hélicoptère, ledit conteneur (1) comprenant : - un corps (2), constitué d'au moins une double-paroi en toile, comprenant un fond (2A) et deux faces latérales (2B) issus de matière dudit fond (2A) et comportant deux bords latéraux (2B-1) et un bord supérieur (2B-2), le fond (2A) comportant une face interne (2A-1) et une face externe (2A-2) sur laquelle le conteneur (1) est destiné à reposer une fois rempli, - deux panneaux latéraux (4), constitués chacun d'au moins une double-paroi en toile, comprenant deux bords latéraux (4A), un bord supérieur (4B) et un bord inférieur (4C), chaque panneau latéral (4) étant cousu par ses bords latéraux (4A) aux bords latéraux (2B-1) des faces latérales (2B) du corps (2) et par son bord inférieur (4C) au fond (2A) du corps (2), - deux sangles (6) de renfort structurel, cousues à la fois sur la face externe (2A-2) du fond (2A) du corps (2), sur les bords latéraux (2B-1) des faces latérales (2B) du corps (2) et sur les bords latéraux (4A) des panneaux latéraux (4), et comprenant chacune deux extrémités (6A) de chacune desquelles s'étend une anse (6B), les sangles (6) étant agencées pour que les quatre anses (6B) puissent être reliées simultanément à un unique crochet de levage d'un hélicoptère de manière à héliporter le conteneur (1). Container (1) flexible for the transport of goods by helicopter, said container (1) comprising: a body (2), consisting of at least one double-wall fabric, comprising a bottom (2A) and two lateral faces (2B) derived from the material of said bottom (2A) and having two lateral edges (2B-1) and an upper edge (2B-2), the bottom (2A) having an inner face (2A-1) and an outer face (2A-2) on which the container (1) is intended to rest once filled, - two side panels (4), each consisting of at least one double-wall fabric, comprising two side edges (4A), an upper edge (4B) and a lower edge (4C), each side panel (4) being sewn by its lateral edges (4A) to the lateral edges (2B-1) of the lateral faces (2B) of the body (2) and by its lower edge (4C) to the bottom (2A) of the body (2), two straps (6) of structural reinforcement, stitched both on the external face (2A-2) of the bottom (2A) of the body (2), on the lateral edges (2B-1) of the lateral faces (2B) of the body (2) and on the lateral edges (4A) of the side panels (4), and each comprising two ends (6A) of each of which extends a handle (6B), the straps (6) being arranged so that the four handles (6B) can be simultaneously connected to a single lifting hook of a helicopter so as to heliport the container (1). Conteneur (1) selon la revendication 1, dans lequel les deux sangles de renfort structurel (6) sont cousues en diagonal sur la face externe (2A-2) du fond (2) de manière à relier deux coins opposés de ladite face externe (2A-2) du fond (2).Container (1) according to claim 1, wherein the two structural reinforcement straps (6) are sewn diagonally on the outer face (2A-2) of the bottom (2) so as to connect two opposite corners of said outer face ( 2A-2) of the bottom (2). Conteneur (1) selon l'une des revendications 1 et 2, dans lequel les sangles de renfort structurel (6) sont cousues sur au moins 90 % de la hauteur (H) des bords latéraux (4A) des panneaux latéraux (4).Container (1) according to one of claims 1 and 2, wherein the structural reinforcement straps (6) are sewn on at least 90% of the height (H) of the side edges (4A) of the side panels (4). Conteneur (1) selon l'une des revendications 1 à 3, dans lequel les sangles (6) sont constituées d'une double épaisseur.Container (1) according to one of claims 1 to 3, wherein the straps (6) consist of a double thickness. Conteneur (1) selon l'une des revendications 1 à 4, dans lequel les anses (6B) sont issues de matière des sangles (6).Container (1) according to one of claims 1 to 4, wherein the handles (6B) are derived from material straps (6). Conteneur (1) selon l'une des revendications 1 à 5, dans lequel la double-paroi en toile du corps et des panneaux latéraux (4) est réalisée en polypropylène tissé.Container (1) according to one of claims 1 to 5, wherein the double-wall fabric of the body and side panels (4) is made of woven polypropylene. Conteneur (1) selon la revendication 6, dans lequel le grammage du polypropylène tissé est compris entre 160 et 250 g/m2.Container (1) according to claim 6, wherein the grammage of the woven polypropylene is between 160 and 250 g / m 2 . Conteneur (1) selon l'une des revendications 1 à 7, dans lequel le fond (2A) est de forme carrée.Container (1) according to one of claims 1 to 7, wherein the bottom (2A) is square. Conteneur (1) selon l'une des revendications 1 à 8, ledit conteneur (1) comprenant en outre une jupe (10) de fermeture de sa face supérieure, opposée au fond (2A) du corps (2) par rapport aux panneaux latéraux (4), ladite jupe (10) étant cousue sur les bords supérieurs (4B) des panneaux latéraux (4) et sur les bords supérieurs (2B-2) des faces latérales (2B) du corps (2).Container (1) according to one of claims 1 to 8, said container (1) further comprising a skirt (10) closing its upper face, opposite the bottom (2A) of the body (2) relative to the side panels (4), said skirt (10) being sewn on the upper edges (4B) of the side panels (4) and on the upper edges (2B-2) of the side faces (2B) of the body (2). Conteneur (1) selon l'une des revendications 1 à 9, dans lequel la longueur utile de chaque sangle (6) est supérieure à la moitié de la diagonale du fond (2A) du conteneur (1).Container (1) according to one of claims 1 to 9, wherein the effective length of each strap (6) is greater than half the bottom diagonal (2A) of the container (1). Conteneur selon la revendication 10, dans lequel les sangles (6) sont chacune configurées pour s'étendre depuis les bords supérieurs (4B) des panneaux latéraux (4) sur une distance (D) inférieure ou égale à 1000 mm.Container according to claim 10, wherein the straps (6) are each configured to extend from the upper edges (4B) of the side panels (4) over a distance (D) less than or equal to 1000 mm. Conteneur selon l'une des revendications 1 à 10, dans lequel les sangles (6) sont chacune configurées pour s'étendre depuis les bords supérieurs (4B) des panneaux latéraux (4) sur une distance (D) supérieure à 1000 mm.Container according to one of claims 1 to 10, wherein the straps (6) are each configured to extend from the upper edges (4B) of the side panels (4) over a distance (D) greater than 1000 mm. Procédé de fabrication d'un conteneur (1) souple pour le transport de marchandises par hélicoptère selon l'une des revendications 1 à 12, ledit procédé comprenant les étapes de : - couture des sangles de renfort structurel (6) sur le corps (2), - couture des deux panneaux latéraux (4), d'une part, au niveau de leurs bords latéraux (4A), aux bords latéraux (2B-2) des faces latérales (2B) du corps (2) et aux sangles de renfort structurel (6) et, d'autre part, au niveau de leur bord inférieur (4C), au fond (2A) du corps (2). A method of manufacturing a flexible container (1) for the transport of goods by helicopter according to one of claims 1 to 12, said method comprising the steps of: - sewing the structural reinforcement straps (6) on the body (2), - stitching of the two side panels (4), on the one hand, at their lateral edges (4A), the lateral edges (2B-2) of the lateral faces (2B) of the body (2) and the structural reinforcement straps (6) and, on the other hand, at their lower edge (4C), bottom (2A) of the body (2). Procédé selon la revendication 13, dans lequel la couture de chacune des deux sangles (6) est réalisée sur au moins 90 % de la hauteur (H) des bords latéraux (4A) des panneaux latéraux (4) et en diagonal sur la face externe (2A-2) du fond (2) de manière à croiser les deux sangles (6) sous le fond (2A) afin de rigidifier le conteneur (1).Method according to claim 13, wherein the seam of each of the two straps (6) is made over at least 90% of the height (H) of the lateral edges (4A) of the side panels (4) and diagonally on the outer face (2A-2) of the bottom (2) so as to cross the two straps (6) under the bottom (2A) to stiffen the container (1). Procédé selon l'une des revendications 13 et 14, comprend une étape préliminaire d'assemblage des parois formant le corps (2) et les deux panneaux latéraux (4) de manière à former la double-paroi.Method according to one of claims 13 and 14, comprises a preliminary step of assembling the walls forming the body (2) and the two side panels (4) so as to form the double wall.
EP16164819.1A 2015-06-18 2016-04-12 Flexible container for transporting goods by helicopter, manufacturing method of a container Active EP3106410B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1555572A FR3037572B1 (en) 2015-06-18 2015-06-18 FLEXIBLE CONTAINER FOR TRANSPORTING GOODS BY HELICOPTER

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EP3106410A1 true EP3106410A1 (en) 2016-12-21
EP3106410B1 EP3106410B1 (en) 2019-07-17

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EP (1) EP3106410B1 (en)
ES (1) ES2754709T3 (en)
FR (2) FR3037572B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1590943A (en) * 1978-01-05 1981-06-10 Miller Weblift Ltd Containers
DE3543837A1 (en) * 1985-12-12 1987-06-19 Herkules Verpackung Package
WO2001025101A1 (en) * 1999-10-06 2001-04-12 Southcorp Australia Pty Ltd Bulk container suitable for dangerous goods
US20060222270A1 (en) * 2005-04-04 2006-10-05 Modena Henry P Flowable material container

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1590943A (en) * 1978-01-05 1981-06-10 Miller Weblift Ltd Containers
DE3543837A1 (en) * 1985-12-12 1987-06-19 Herkules Verpackung Package
WO2001025101A1 (en) * 1999-10-06 2001-04-12 Southcorp Australia Pty Ltd Bulk container suitable for dangerous goods
US20060222270A1 (en) * 2005-04-04 2006-10-05 Modena Henry P Flowable material container

Also Published As

Publication number Publication date
ES2754709T3 (en) 2020-04-20
EP3106410B1 (en) 2019-07-17
FR3037573A1 (en) 2016-12-23
FR3037572A1 (en) 2016-12-23
FR3037572B1 (en) 2017-06-09
FR3037573B1 (en) 2017-06-09

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