Shipping container
The transport container's bracing structure with flat iron bars and metal tubes maintains equilibrium, addressing instability issues with viscous substances, ensuring safe and compact storage and transport.
Patent Information
- Application Number
- IR139750140003004932
- Authority / Receiving Office
- IR · IR
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2017-03-15
- Filing Date
- 2018-09-05
- Publication Date
- 2024-07-20
- Estimated Expiration
- 2038-09-05
AI Technical Summary
Existing large-volume transport containers, particularly those filled with viscous substances like bitumen, experience instability due to mass displacement, leading to a loss of equilibrium and inability to ensure long-term safe storage.
A transport container design featuring a bracing structure with tension-resistant and pressure-resistant flat iron bars connected to metal tubes, forming a square support surface, which absorbs hydrostatic pressure and maintains equilibrium, allowing for stable storage and transport.
The design prevents container tipping and ensures long-term stability, enabling safe storage and reuse while minimizing damage to the inner liner and allowing for compact storage and transport.
Smart Images
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Abstract
Description
Shipping container The invention relates to a shipping container having a circular fabric cover extending from the lowest part to the highest part in such a way as to provide a container space for storing granular, liquid, viscous or semi-viscous materials, and in which a plurality of components, preferably four, of continuous stabilizing elements are provided, which are arranged from the bottom to the top and along the cover and whose ends are connected at least at the bottom by a windproof structure in a tension-resistant and pressure-resistant state, while the stabilizing elements are designed as tubes arranged on the outer surface of the cover. Such large shipping containers are known from prior art. The main problem when filling these shipping containers with viscous materials such as bitumen, which is viscous at higher temperatures and tends to cause the shipping container to shift slowly and continuously from its equilibrium position, and as a result, long-term storage of the filled shipping container can no longer be guaranteed. In prior art, stabilizing structures are known to solve this problem, which are used to mechanically receive and shake the container. For example, Australian patent application AU 2008 202 062 A1 describes a device comprising "glued together" tubes. In addition, such devices are known from the application versions of Japanese patents JP 2002 337939 A and JP 2015 182787 A and French patent applications FR 2 158 093 A1 and FR 2 634 469 A1. The known devices are only held together during assembly and are therefore not stable during transport. Transport container The invention relates to a transport container comprising a jacket formed in particular from a circular woven fabric, which extends between a lower part and an upper part in such a manner that a container volume for receiving granular, liquid, viscous or semi-viscous substances, in particular bitumen, is formed, wherein a plurality of, preferably four, elongate stabilizing elements are provided, which run along the jacket from the region of the lower part to the region of the upper part, and the ends of which at least in the region of the lower part are connected via a bracing structure in a tension-proof and pressure-resistant manner, wherein the stabilizing elements are designed as tubes which are arranged on the outer surface of the jacket. Such large-volume transport containers are known from the prior art under the designation big bags. A problem arises in particular when filling these transport containers with viscous substances such as bitumen which are viscous at higher ambient temperatures and tend to slowly and continuously bring the transport container out of its equilibrium position due to mass displacement so that a stable long-term storage of the filled transport container can no longer be ensured. In the prior art stabilizing structures are known for solving this problem, which serve to receive and mechanically stabilize the transport container. For example, the Australian Patent Application AU 2008 202 062 A1 discloses such an apparatus which comprises snap-together tubes. Further such devices are known from the Japanese Patent Applications JP 2002 337939 A and JP 2015 182787 A and from the French Patent Applications FR 2 158 093 A1 and FR 2 634 469 A1.The known apparatus are only put together during assembly and are in particular therefore not very stable during lifting. It is the object of the invention to solve this and other problems of known transport containers and provide a transport container which on the one hand ensures a long-term and safe storage of the filled materials, on the other hand can be reused if possible, and can also be stored compactly and transported in the unfilled state. This and other objects of the invention are solved according to the invention by the features of patent claim 1. According to the invention, it can be provided that the bracing structure comprises a plurality of tension-proof and pressure-resistant profile frames or a plurality of, preferably four, tension-proof and pressure-resistant flat elongate struts, in particular flat iron bars, which at the ends thereof are preferably connected flush and in a force fitting manner to the tubes and form a substantially square support surface. The flat iron bars can according to the invention have a thickness of 1 mm - 3 mm and a width of 40 mm - 60 mm. An advantage when using such a thin flat iron bar consists in that the flat iron bar has a certain flexibility and thus may adapt to the shape of the filled transport container to a certain extent. As a result of this bracing structure according to the invention, a frame is formed which exclusively serves to shape the transport container. Since the in particular four vertically arranged stabilizing elements are interconnected at the base and at the upper part, they form an approximately square profile of the transport container instead of a circular one, as is usually the case with cylindrical containers. This counteracts any falling over of the container. In addition, the bracing structure according to the invention enables a fastening on transport means without exerting direct forces on the jacket of the flexible container. According to the invention, it is provided that the stabilizing elements are connected detachably to the bracing structure so that the frame according to the invention can be supplied folded and assembled on site. When filling the flexible container with bitumen, hydrostatic pressure is built up. A container which is produced from a woven fabric hose and is merely sewn to the square base and to the same size square top would adopt a cylindrical shape without the laterally arranged stabilizing elements. However, the hydrostatic pressure is absorbed by the counteracting static system of four perpendicularly arranged stabilizing elements which are connected at the bottom and optionally also at the top in a force fitting manner to struts so that an equilibrium is formed in which the desired approximately square profile shape of the transport container is achieved. In order to achieve this high stability, according to the invention, it can be provided that the stabilizing elements are designed as preferably metal tubes in the interior of which threaded rods are arranged. The threaded rods can in particular be designed with an M10 thread. The bracing structure can comprise struts, preferably flat iron bars, which are braced together with the threaded rods in a force fitting manner via nuts or other connecting elements in such a manner that respectively two struts form a stiff three-dimensional corner with one end of a tube. This enables the use of flat diagonal struts under the or in the lower part which require very little space and only very slightly influence the shape of the flexible container, which in particular reduces the risk of failure of the inner sealed liner in this region during filling with hot material and during handling of the container in the course of transport and during storage for example on building sites. As a result of the force fitting connection of the stabilizing elements with the struts, an approximately triangular field is formed which is very stiff and thereby also ensures the horizontal position of the lateral tubes. This construction according to the invention prevents any falling over of the transport container due to displacement of the container contents by producing an equilibrium state. The jacket can be formed of a woven material made of plastic or fibres, preferably in the form of circular material which can be used directly without horizontal seam for the container body. These materials can in practice only absorb tensile stresses and are readily available. The stabilizing elements can comprise rigid rubes, rods or profiles made of steel, wood or plastic and are preferably hollow cylindrical or rectangular profiles with correspondingly dimensioned moment of inertia and pressure stability, which are arranged vertically on the side surfaces of the container in such a manner that after unfolding and subsequent filling they then run centrally as stayers along the side surfaces of the container body. According to the invention, the stabilizing elements can be designed as tubes having a diameter of 30 mm - 40 mm. The tubes can have a thickness of about 1 mm and preferably be made of metal. The tubes can however also be made of plastic or other materials. The struts can be designed as tension-proof static elements made of steel, wood, plastic or natural fibres which are connected in a force fitting manner underneath or inside, for example, in a double base or in guides of the container base, to the stabilizing elements arranged at the side of the container body so that when viewed from above they form a substantially square support surface. Preferably these struts can be designed from such a material and in such a form that these can also absorb pressure and bending stresses at least to a certain extent. This can contribute to an increase in the strength of the overall structure and enable an economical design of the structure adapted to specific cases of application, for example harsh transport and storage conditions in certain parts of the world. The function of these struts can optionally also be performed by an upper part designed in such a manner, for example, a woven fabric plate with or without reinforcements by folds, sewn-in straps etc. so that the transverse forces introduced into the upper part during filling via the vertical stabilizing elements can be reliably absorbed. Preferably separate tension members can also be provided on the upper part, preferably those having a certain compressive and bending strength in order to keep the container body free from undesirable stresses. According to the invention, it can be provided that the stabilizing elements and struts only serve to stabilize the transport container and are not used for the lifting and manipulation of the container. As a result, the support structure can be designed to be light and cost-effective. The weight of the filled container should preferably be transferred principally via lifting loops attached directly to the jacket of the container. The support structure in the form of the stabilizing elements and the struts can be designed as a unit substantially independent of the container body for multiple use. Particularly in developing countries after use for bitumen transport the container body can be reworked with local resources to form normal big bags, for example, for building materials or the like whilst the inner liner is fused with the bitumen. This enables overall cost-effective, logical solutions with good utilization of materials and resources. The support structure in the form of the stabilizing elements and struts can very probably be advantageously used for securing the stable positioning, for example, on non-flat storage sites or when loading into / onto transport means such as trucks or containers using suitable loading aids such as bands or hooks. According to the invention, it can be provided that the tubes are arranged in woven fabric sleeves arranged in sections or covering the entire jacket, preferably fastened on the jacket by seams, on the outer surface of the jacket. According to the invention, it can be provided that the tension-proof and pressure-resistant struts are only provided in the region of the lower part and the stabilizing elements in the region of the upper part are connected by tension-proof straps, belts, woven fabric bands or chains. According to the invention, it can be provided that a filler neck is provided in the upper part in a known manner. According to the invention, it can be provided that the diameter of the tubes substantially corresponds to the width of the flat iron bars in order to achieve that when fastening the flat iron bars, these form a substantially right angle with the tubes. According to the invention, it can be provided that the jacket is formed from a flat woven fabric or a circular woven fabric and that a plastic coating or a liner made of plastic such as polyethylene or comparable material having a similar thermal behaviour is arranged inside the jacket. According to the invention, it can be provided that at least two, preferably four lifting loops are arranged on the jacket, which are preferably each arranged in the region between two stabilizing elements. According to the invention, it can be provided that the lifting loops are fastened by fastening means, preferably woven fabric strips on the jacket in the region between two stabilizing elements. The lifting loops can preferably each be arranged centrally between two stabilizing elements. According to the invention, it can be provided that in the region of the upper part a first upper profile frame forming a preferably square surface and in the region of the lower part a second lower profile frame forming a preferably square support surface are provided and both profile frames are connected preferably flush and in a force fitting manner to the frame. For connection of the struts or the tubes to the profile frames it can be provided according to the invention that screw nuts are provided in the tubes and the struts or profile frames are connected at their corner regions by screws to the tubes. The screw nuts can in particular be designed as spring nuts which are introduced into the tubes. According to the invention, the upper profile frame can comprise an angle profile and the lower profile frame can comprise a rectangular profile, wherein the dimensions of the profile frames are selected in such a manner that the lower profile frame of one transport container can be inserted into the upper profile frame of another transport container. This ensures that the transport containers can be stacked particularly safely. In particular, it can be provided that the outer dimension d1 of the lower profile frame is at most the same size, preferably smaller than the inner dimension d2 of the upper profile frame. Threaded rods and nuts can be provided for connection of the tubes to the struts or profile frames, wherein the threaded rods are arranged in the tubes. According to the invention, it can in turn be provided that the profile frames are only provided in the region of the lower part and the stabilizing elements in the region of the upper part are connected by tension-proof straps, belts or chains. The diameter of the tubes can substantially correspond to the width of the struts or profile frames in order to achieve a stable flush connection of the tubes to the profile frames. Further features according to the invention are obtained from the patent claims, the drawings and the following description of the exemplary embodiments. The invention is explained hereinafter with reference to exemplary embodiments. Figures 1a – 1d show schematic views of a first exemplary embodiment according to the invention. The transport container 1 is shown from above in Fig. 1a and comprises a jacket 2 made of a circular woven fabric which is delimited at its upper edge by an upper part 4. A filler neck 11 for filling the transport container 1 is arranged in the upper part 4 and a liner 5 made of a plastic such as polyethylene is located inside the jacket 2. Four stabilizing elements in the form of tubes 6 having inserted threaded rods 7 run along the jacket 2. The tubes 6 are inserted into woven fabric sleeves 8 which are arranged through seams 14 on the outer surface of the jacket 2 and extend from the lower part 3 to the upper part 4 of the transport container 1. Figure 1b shows that the stabilizing elements are interconnected by a bracing structure in a tension-proof and pressure-resistant manner both in the region of the lower part 3 and also in the region of the upper part 4. This forms a stable frame which holds upright and stabilizes the transport bag itself in its interior. The depicted schematic view in Fig. 1a shows the transport container in the filled state, wherein four corners are formed by the pressure of the filling material between the stabilizing elements. At the corners lifting loops 12 are provided by means of woven fabric strips 13 in order to be able to lift the transport container, for example by means of a fork lift truck. This should avoid a loading of the stabilizing elements and the bracing structure. In Fig. 1b it is also shown that the stabilizing elements comprise threaded rods 7 which are inserted in tubes 6. The tubes 6 are made of metal having a diameter of about 40 mm. This large diameter of the tubes ensures that the tubes 6 do not damage the woven fabric sleeves 8. At both ends of the threaded rods 7 these are each connected to tension-proof and pressure-resistant struts in the form of flat iron bars 9 so that a substantially rectangular bracing structure having a square cross-section is formed. Alternatively to this in an exemplary embodiment not shown, the threaded rods 7 or the tubes 6 are interconnected in a tension-proof manner at least in the region of the upper part 4 by cables, belts, straps or chains. Figure 1c shows the fastening of the tubes 6 to the flat iron bars 9 in detail. Threaded rods 7 which have a substantially smaller diameter than the tubes 6 are arranged in the tubes 6. The threaded rods 7 are screwed tightly to the flat iron bars 9 by a nut 10, wherein the screw connection is designed to be so tight that the tube 6 forces the flat iron bars 9 into a rigid right-angle connection. To this end, the diameter of the tube 6 at 40 mm is approximately adapted to the width of the flat iron bar 9 at 40 mm to 60 mm. By firmly tightening the screw connection it is achieved that the flat iron bar 9 rests flush against the open end of the tube 9 and thus substantially encloses a right angle with the tube 6. The threaded rod arranged in the tube 6 has a diameter of about 10 mm. Before the fixing of the bracing configuration, the threaded rod is preferably arranged freely movably in the tube so that the threaded rod can move in the tube during tightening of the screw connection. After fixing of the bracing structure the position of the threaded rod in the tube is substantially fixed. Figure 1d shows a schematic cross-section through the tubes 6 along the section D-D in Fig. 1b. The tubes 6 are arranged on the side of the jacket 2 in woven fabric sleeves 8, wherein the woven fabric sleeves 8 are closely connected to the jacket via seams 14. It is thereby achieved that the tubes 6 rest tightly against the jacket. A threaded rod 7b is arranged freely movably inside the tube 6. The larger diameter of the tube 6 in relation to the threaded rod 7 has the further advantage that the jacket 2 is only slightly stressed since the loading is distributed through the tightened threaded rod 7 over a larger circumference of the tube 6. Figures 2a-2d show schematic views of a second exemplary embodiment according to the invention. The transport container 1 is shown from above in Fig. 2a and comprises a jacket 2 made of a circular woven fabric which is delimited at its upper edge by an upper part 4.A filler neck 11 for filling the transport container 1 is arranged in the upper part 4 and a liner 5 made of a plastic such as polyethylene is located inside the jacket 2. Four stabilizing elements in the form of tubes 6 having inserted threaded rods 7 run along the jacket 2. The tubes 6 are inserted into woven fabric sleeves 8 which are arranged through seams 14 on the outer surface of the jacket 2 and extend from the lower part 3 to the upper part 4 of the transport container 1. A bracing structure is formed by an upper profile frame 15a and a (not shown) lower profile frame 15b and the tubes 16. The depicted schematic view in Fig. 2a shows the transport container in the filled state, wherein four corners are formed by the pressure of the filling material between the stabilizing elements. At the corners lifting loops 12 are provided by means of woven fabric strips 13 centrally between the tubes 6 in order to be able to lift the transport container, for example by means of a fork lift truck. This should avoid a loading of the stabilizing elements and the bracing structure. Figure 2b shows a schematic side view of two transport containers according to the invention which are stacked above one another. The stabilizing elements in the form of tubes 6 are interconnected in a tension-proof and pressure-resistant manner both in the region of the lower part and also in the region of the upper part by a bracing structure in the form of upper profile frame 15a and lower profile frame 15b. A stable frame is thus formed which holds upright and stabilizes the transport bag itself in its interior. In the exemplary embodiment according to Figs. 2a-2d the bracing structure comprises an upper profile frame 15a and a lower profile frame 15b which are connected flush and in a force fitting manner to the tubes 6 and form a substantially square support surface. As can be seen in Fig. 2b, the upper profile frame 15a is designed as an angle profile and the lower profile frame 15b as a rectangular profile. The dimensions of the profile frames 15a, 15b in this exemplary embodiment are selected in such a manner that the lower profile frame can be inserted in the upper profile frame. For this purpose the outer dimension d1 of the lower profile frame 15b is slightly smaller than the inner dimension d2 of the upper profile frame 15a. As a result a good seating of the upper transport container on the lower transport container is achieved. At both ends of the tubes 6 these are connected to the profile frames 15a, 15b so that a substantially rectangular bracing structure having a square cross-section is formed. Figure 2c shows the fastening of the tubes 6 with the profile frames 15a, 15b in detail. For connection of the tubes to the profile frames 15a, 15b spring nuts 17 are inserted in the tubes and the profile frames are connected to the spring nuts 17 by screws 16 at their corner regions. The profile frames 15a, 15b are tightly screwed to the spring nuts 17 by a screw 16 , wherein the screw connection is so tight that the tube 16 forces the profile frames 15a, 15b into a right right-angle connection. To this end the diameter of the tube 6 at 40 mm is approximately adapted to the width of the profile frame 15a, 15b at 40 mm to 60 mm. By firmly tightening the screw connection it is achieved that the profile frames 15a, 15b rest flush against the open end of the tube 6 and thereby substantially enclose a right angle with the tube 6. Figure 2d shows a schematic cross-section along the line D-D from Fig. 2b through the tubes 6. The tubes 6 are arranged on the side of the jacket 2 in woven fabric sleeves 8, wherein the woven fabric sleeves 8 are tightly connected to the jacket via seams 14. It is thereby achieved that the tubes 6 rest tightly against the jacket. A spring nut 17 is introduced inside the tube 6. In an exemplary embodiment not shown the flat iron bars 9 of the first exemplary embodiment are not fixed in the tubes with continuous threaded rods 7 but through the spring nuts 17 shown in the second exemplary embodiment. In this exemplary embodiment a continuous threaded rod 7 is therefore not required. The invention is not restricted to the depicted exemplary embodiments but comprises all the transport containers within the framework of the following patent claims. Reference list 1 Transport container 2 Jackets 3 Lower part 4 Upper part 5 Liner 6 Tubes 7 Threaded rod 8 Woven fabric sleeve 9 Flat iron bar 10 Nuts 11 Filler neck 12 Lifting loop 13 Woven fabric strip 14 Seam 15a Upper profile frame 15b Lower profile frame 16 Screws 17 Spring nut The aim of this invention is to overcome these and other problems of known shipping containers and to provide a shipping container which, on the one hand, ensures long-term and safe storage of filled materials, and on the other hand, can be reused and stored and transported in an unfilled state. This and other objects of the invention are solved based on the features of claim 1 of the invention. According to this invention, it can be said that the wind-tightening structure includes a number of tension-resistant and pressure-resistant frames or several - preferably 4 - thin flat beams - in other words, tension-resistant and pressure-resistant iron bars - which are preferably connected at their ends to the pipes in a flush manner and create a square support surface. The flat iron bars can have a thickness of 1 to 3 mm and a width of 40 to 60 mm according to the invention. An advantage of using such thin flat steel strip is that the flat iron bars have a certain flexibility and may therefore conform to the shape of the filled container to some extent. As a result of this wind-up structure according to the invention, a frame is formed which is exclusively used to shape the transport container. Since the four vertical stabilizing elements at the base and the top are connected to each other, they form a container which is almost square in shape instead of the circular one associated with cylindrical containers. This prevents any falling of the container. Furthermore, the wind-up structure according to the invention provides a means of attachment in transport which does not exert any direct force on the flexible container cover. According to this invention, the stabilizing elements are attached to the windbreak structure in a manner that is detachable, and the frame of this invention can be packaged and installed on site. When filling a flexible container with bitumen, hydrostatic pressure is created. The container, which is manufactured from a woven fabric hose tube and simply sewn into a square of the same size as the top square to the base square, is formed into a cylinder without any side-by-side stabilizing elements. However, the hydrostatic pressure is absorbed by the statically opposed system of four vertical stabilizing elements attached at the bottom and optionally also force-fitted to the beams at the top, so that an equilibrium is formed in which the desired characteristics of the square shipping container are approximately achieved. In order to achieve this high stability, according to the invention, it can be understood that the stabilizing elements are preferably designed as metal tubes with toothed bars inserted inside them. The toothed bars can in particular be designed with M10 teeth. The wind-tightening structure can comprise beams, preferably flat iron bars, which are connected to the toothed bars in pairs by force fitting and by means of a nut or any other connecting element, in such a way that the two columns respectively form a straight three-dimensional corner with one end of the tube. This results in the use of flat diagonal columns below or at the bottom, which require very little space and have only a small impact on the shape of the flexible container. This in particular reduces the risk of damage to the inner sealed cylinder liner in this area when filling with hot material and when loading the container during transport and during sample storage on construction sites. As a result of such force fitting of the stabilizing elements with the columns, an almost triangular field is formed, which is very strong and thus also ensures the horizontal position of the side tubes. This construction according to the invention prevents the transport container from falling due to the displacement of the container contents by creating a state of equilibrium. The cover can be made of a woven fabric of plastic or fibers, preferably in the form of circular material that can be applied directly to the container body without horizontal seams. These materials practically absorb only tensile stress and are easily accessible. The stabilizing elements can consist of rods, bars or profiles made of steel, wood or plastic, and are preferably hollow cylindrical or rectangular profiles with regard to the measured moment of inertia and pressure stability, which are arranged vertically on the side surfaces of the container and in such a way that after opening and filling, they can be centrally implemented as retainers along the side surfaces of the container body. According to the invention, the stabilizing elements can be designed as tubes with a diameter of 30 to 40 mm. The tubes can have a thickness of about 1 mm and are preferably made of metal. The tubes can also be made of plastic or other materials. The columns can be designed as static, tensile-resistant elements made of steel, wood, plastic or natural fibers and are force-fitted below or inside - for example in a double base or in the base conductors of the container - to the stabilizing elements located next to the container body, so that when viewed from above they form a square-shaped support surface. Preferably, these beams can be made of such materials and designed in such a way that they can absorb the compression and bending stress at least to a certain extent. This can lead to an increase in the overall strength of the structure and provide an economical design of the structure that is suitable for specific applications, for example, the harsh transport and storage conditions in some parts of the world. The function of these bars can optionally also be performed by a top part designed in such a way - for example, a woven fabric sheet reinforced or not by pleats, sewn straps, etc. - so that the transverse forces acting on the top part during filling are reliably absorbed by the vertical stabilizing elements. Preferably, separate tension members can also be placed in the upper part, preferably those with a certain compressive and bending strength to protect the container body from undesirable stresses. According to the invention, it can be said that the stabilizing elements and the columns are used only for stabilizing the shipping container and are not used for lifting and handling the container. As a result, the support structure can be light and inexpensive. The weight of the filled container should preferably be transferred directly to the container shell via the lifting rings. The support structure in the form of stabilizing elements and beams can be designed as a unit completely independent of the container body for multiple uses. Especially in developing countries, after being used for bitumen transport, the container body can be reconditioned with local resources to become a normal large container for example for building materials or the like, while the inner liner is mixed with bitumen. This leads to low-cost and rational overall solutions and good use of materials and resources. The support structure in the form of stabilizing elements and columns can be easily maintained in a stable position, for example, in non-flat storage locations or when loading onto transport vehicles such as trucks or containers using suitable loading devices such as straps or hooks. According to the invention, it can be understood that the tubes are used in woven fabric sleeves of sections or for covering the entire cover, which are preferably installed by means of a seam on the outer surface of the cover. According to this invention, it can be understood that the tension-resistant and pressure-resistant beams are provided only at the bottom, and the stabilizing elements at the top are connected by straps, belts, strips or chains of woven fabric. Tension-resistant. According to the invention, it can be provided that a filling chamber is provided in the upper part in a known manner. According to this invention, it can be said that the diameter of the tubes corresponds mainly to the width of the flat iron sheets so that when connected to the flat iron bars, they form a right angle with the tubes. According to this invention, the cover can be said to be made of a woven fabric or circular fabric, and a plastic cover or sheet made of plastic such as polyethylene or a material with similar thermal behavior is placed inside the cover. According to the invention, it can be provided that at least two, preferably four lifting rings are mounted on the cover, preferably each one being located in each region between the two stabilizing elements. According to the invention, it can be provided that the lifting rings are fastened by means of a preferably fabric strip on the cover and in the region between the two stabilizing elements. The lifting rings can preferably each be located centrally between the two stabilizing elements. According to this invention, it can be said that in the upper part, a primary upper profile frame with a preferably square surface and in the lower part, a secondary lower profile frame with a preferably square surface are provided, both frames being connected to the frame in a horizontal manner and by force fitting method. For connecting the beams to the profile frames, bolts and nuts can be provided according to the invention in the tubes and columns or profile frames, which are connected to the tubes by bolts in the corner areas. The bolts and nuts can be designed in particular as spring bolts that are connected to the tubes. According to the invention, the upper frame can have an angular profile and the lower profile can have a rectangular profile, while the dimensions of the profile frames are selected such that the lower profile frame of one shipping container is connected to the upper profile frame of another shipping container. This ensures that the shipping containers can be stored in a particularly safe manner. In particular, it can be added that the outer dimension d1 of the lower profile frame is at most the same size, preferably smaller, than the inner dimension d2 of the upper profile frame. Toothed bars and nuts can be provided to connect the pipes to columns or profile frames, while the toothed bars are placed in the pipes. According to the invention, it can in turn be provided that the profile frames are provided only in the lower region and the stabilizing elements are connected in the upper region with strong, tensile or chain straps. The diameter of the pipes can be significantly related to the width of the columns or profile frames to achieve a stable connection between the pipes and the profile frames. Other features according to the invention are derived from the patent claims, the figures and the following description of exemplary embodiments. The invention is explained below with reference to exemplary embodiments. Figures 1a-1d show a preliminary view of a first exemplary embodiment according to the invention. The transport container 1 is shown from above in Figure 1a and comprises a cover 2 made of a circular woven fabric, the upper edge of which is defined by a top section 4. A filling tank 11 for filling the transport container 1 is located in the top section 4 and a liner 5 made of a plastic such as polyethylene is located inside the cover 2. Four stabilizing elements in the form of tubes 6 with toothed bars 7 inside them are located along the cover 2. The tubes 6 are located in the form of woven fabric sleeves 8, which are located by a seam 14 on the outer surface of the cover 2 and extend from the lower part 3 to the upper part 4 of the transport container 1. Figure 1b shows that the stabilizing elements are connected to each other with a wind-tight structure in a tension-resistant and pressure-resistant state in both the lower part 3 and the upper part 4. This forms a stable frame that stabilizes the transport container from within and holds it up. The schematic diagram depicted in Figure 1a shows the shipping container in a filled state, with the four corners formed by the compression of the filling material between the stabilizing elements. At the corners, lifting rings 12 are provided using woven fabric straps 13 for lifting the shipping container by means of a forklift truck. This should avoid loading on the stabilizing elements and the wind-tightening structure. It is also shown in Figure 1b that the stabilizing elements, consisting of toothed bars 7, are placed in the tubes 6. The tubes 6 are made of metal, their diameter being about 40 mm. This large diameter of the tubes ensures that the tubes 6 do not damage the woven sleeve 8 of fabric. At both ends of the toothed bars 7, each is connected by tensile-resistant and compressive-resistant columns in the form of flat iron bars 9, so that a continuous rectangular structure with a square cross-section is formed. Alternatively, in a test example not shown, the toothed bars 7 or tubes 6 are connected by a tensile resistance at least in the region of the upper part 4 with a cable, belt, strap or chain. Figure 1c shows the fastening of the tube 6 to the flat steel bars 9. Toothed bars 7, which have a diameter considerably smaller than the tubes 6, are placed in the tubes 6 and the toothed bars 7 are screwed tightly to the flat iron bars 9 with a nut 10, the screw connection being designed in such a way that the tube 6 connects the flat iron bars 9 with a rigid right angle connection. For this purpose, the diameter of the tube 6, i.e. 40 mm, corresponds approximately to the width of the flat iron sheet 9, at 40 mm to 60 mm. By firmly screwing it is obtained that the flat iron strip 9 is placed against the open end of the tube 9 and thus forms a right angle with the tube 6. The toothed bar located in the tube 6 has a diameter of about 10 mm. Before modifying the windage configuration, the toothed bar is preferably freely movable in the tube so that the toothed bar can move freely in the tube during the screw connection. After modifying the windage configuration, the position of the toothed bar in the tube is fixed. Fig. 1d shows a schematic section through the tube 6 along the section DD in Fig. 1b. The tubes 6 are placed next to the cover 2 in woven fabric sleeves 8, while the woven fabric sleeves 8 are connected to the cover via holes 14. The tubes 6 are thus firmly held against the cover. A toothed bar 7b is freely movable inside the tube 6. The larger diameter of the tube 6 in connection with the toothed bar 7 has the advantage that the rack 2 is only slightly stressed because the load is distributed through the threaded bar 7 and due to the larger circumference of the tube 6. Figs. 2a-2d show plan views of a second embodiment according to the invention. The transport container 1 is shown from above in Fig. 2a, which comprises a cover 2 made of a circular woven fabric, the upper edge of which is bounded by the edge of the upper part 4. A filling tank 11 for filling the transport container 1 is located in the upper part 4 and a liner 5 made of plastic such as polyethylene is located inside the cover 2. Four stabilizing elements in the form of tubes 6 with toothed bars 7 run along the cover 2. The tubes 6 are placed inside woven fabric sleeves 8, which are located by seams 14 on the outer surface of the cover 2 and extend from the bottom 3 to the top 4 of the transport container 1. The windproof structure is formed by an upper profile frame 15a and a lower profile frame 15b (not shown) and the tubes 16. Schematic figure 2a shows the design of the transport container in the filled state, in which the four corners are formed by the pressure of the filling material between the stabilizing elements. At the corners, lifting rings 12 are provided centrally between the tubes 6 using woven fabric strips 13 to enable the transport container to be lifted, for example by means of a forklift truck. Overloading of the stabilizing elements and the windage structure should be avoided. Figure 2b shows a side view of two transport containers according to the invention which are placed one on top of the other. The stabilizing elements in the form of tubes 6 are connected to each other by a wind-tight structure in the form of an upper profile frame 15a and a lower profile frame 15b in a tension-resistant and pressure-resistant manner in both the lower and upper regions. A stable frame is thus formed which stabilizes the transport container from the inside and holds it up. In the exemplary embodiment according to FIGS. 2a-2d, the wind-tightening structure comprises an upper profile frame 15a and a lower profile frame 15b, which are connected in a flush and force-fitting manner to the tubes 6 and form a substantially square support surface. As can be seen in Figure 2b, the upper profile frame 15a is designed as an angled profile and the lower profile frame 15b as a rectangular frame. The dimensions of the upper profile frame 15a and the lower profile frame 15b in this experimental version are chosen in such a way that the lower profile frame can be placed in the upper profile frame. For this purpose, the outer dimension d1 of the lower profile frame 15b is slightly smaller than the inner dimension d2 of the upper profile frame 15a. As a result, the upper transport container fits easily into the lower transport container. At both ends, the tubes 6 are connected to the profile frames 15a, 15b so that a rectangular structure with a square cross-section is formed. Figure 2c shows the connection of the tubes 6 to the profile frames 15a and 15b in detail. For connecting the tubes to the frames 15a, 15b, spring nuts 17 are inserted into the tubes and the profile frames are connected to the nuts 17 in the corner areas with screws 16. The profile frames 15a, 15b are connected to the nut axis 17 with screws 16, while the screw connection is sufficiently tight that the tube 16 connects the profiles 15a, 15b to the right of the right angle. In this way, the diameter of the tube 6 is approximately 40 mm, which is adjusted to the width of the frame 15a, 15b, which is 40 to 60 mm. With the tight screw connection, it is achieved that the profile frames 15a, 15b are located opposite the open end of the tube 6 and thus form a right angle with the tube 6. Figure 2d shows a cross-section along line DD of Figure 2b through the tubes 6. The tubes 6 are located next to the cover 2 and in woven fabric sleeves 8, while the woven fabric sleeves 8 are tightly connected to the cover via seams. The tubes 6 lie completely against the cover. A spring nut 17 is located inside the tube 6. In a test example not shown, the flat iron bars 9 of the first embodiment are not inserted into the tubes through the fixed toothed bars 7 but through the spring nuts 17 shown in the second example. Therefore, in this test example, the continuous toothed bar 7 is not required. The invention is not limited to the embodiments illustrated, but includes all shipping containers within the scope of the claims set forth below. Reference list 1 shipping container 2 covers 3 lower parts 4 upper parts 5 liners 6 tubes 7 toothed bars 8 woven fabric sleeves 9 flat metal strips 10 beads 11 filling tanks 12 lifting rings 13 woven fabric strips 14 seams 15a Upper profile frame 15b Lower profile frame 16 screws 17 spring nut
Claims
Claims 1. Transport container (1), comprising a jacket (2) formed in particular from a circular woven fabric, which extends between a lower part (3) and an upper part (4) in such a manner that a container volume is formed for receiving granular, liquid, viscous or semiliquid substances, in particular bitumen, wherein a plurality of, preferably four, stabilizing elements are provided, which run along the jacket (2) from the region of the lower part (3) to the region of the upper part (4) and whose ends at least in the region of the lower part (3) are connected via a bracing structure in a tension-proof and pressure-resistant manner, wherein the stabilizing elements are designed as tubes (6) which are arranged on the outer surface of the jacket (2), wherein - the bracing structure comprises a plurality of, preferably four, tension-proof and pressure-resistant flat elongate struts, in the form of flat iron bars (9), - which at their ends are connected flush and in a force fitting manner to the tubes (6) and form a preferably substantially square support surface, - wherein for connection of the tubes (6) to the flat iron bars (9) o screw nuts are provided in the tubes (6) and the flat iron bars (9) are connected at their corner regions by screws (16) to the tubes (6), wherein the screw nuts are designed as spring nuts (17) which are introduced into the tubes (6) or o threaded rods (7) and nuts (10) are provided and the threaded rods are arranged in the tubes (6), wherein the threaded rods (7) have a diameter which is smaller by a factor of 2 to 4 than the diameter of the tubes (6).
2. The transport container according to claim 1, characterized in that in the region of the upper part (4) a first upper profile frame (15a) forming a preferably square surface and in the region of the lower part (3) a second lower profile frame (15b) forming a preferably square support surface are provided and both profile frames (15a, 15b) are connected preferably flush and in a force fitting manner to the frame (6).
3. The transport container according to claim 1 or 2, characterized in that the upper profile frame (15a) comprises an angle profile and the lower profile frame (15b) comprises a rectangular profile, wherein the dimensions of the profile frames (15a, 15b) are selected in such a manner that the lower profile frame (15b) of one transport container can be inserted into the upper profile frame (15a) of another transport container.
4. The transport container according to claim 3, characterized in that the outer dimension d1 of the lower profile frame (15b) is at most the same size, preferably smaller than the inner dimension d2 of the upper profile frame (15a).
5. The transport container according to one of claims 1 to 4, characterized in that the tubes (6) are arranged in woven fabric sleeves (8) arranged in sections or covering the entire jacket (2), preferably fastened on the jacket by seams (14), on the outer surface of the jacket (2).
6. The transport container according to one of claims 1 to 5, characterized in that the struts or profile frames (15a, 15b) are only provided in the region of the lower part (3) and the stabilizing elements in the region of the upper part (4) are connected by tension-proof straps, belts or chains.
7. The transport container according to one of claims 1 to 6, characterized in that the diameter of the tubes (6) substantially corresponds to the width of the struts or the profile frames (15a, 15b).
8. The transport container according to one of claims 1 to 7, characterized in that at least two, preferably four lifting loops (12) are arranged on the jacket (2), which are preferably each arranged entirely in the region between two stabilizing elements.
9. The transport container according to claim 8, characterized in that the lifting loops (12) are fastened by fastening means, preferably woven fabric strips (13) on the jacket (2) in the region between two stabilizing elements.
10. The transport container according to claim 8 or 9, characterized in that the lifting loops (12) are each arranged centrally between two stabilizing elements.