EP2604545A1 - Transport and storage container for fluids - Google Patents

Abstract

The container has a plastic inner container part including side walls (12-15), lower wall (16) and an upper wall (17) supported by a base frame (29). A closable filler neck is formed on the upper wall, and a draining neck (20) with a tapping armature (21) is formed on a lower section of one of the side walls. A cage mantle (22) with metal horizontal bars and metal vertical bars receives the inner container part. Upper ends of vertical bars include a convex cross-section outline in transition of a connection section to a bent section on an inner side facing the inner container part.

Description

The present invention relates to a transport and storage container for liquids with a pallet-like base for an inner container made of plastic with four side walls, a lower and an upper bottom, an integrally formed on the upper bottom, closable filler neck and an integrally formed on the lower portion of a side wall outlet with a Entnahmearmatur and a grid shell with horizontal and vertical bars of metal for receiving the inner container, wherein ends of the formed as a hollow profile vertical bars are welded to a lower and an upper peripheral edge profile of the grid shell, wherein at least the upper edge profile for forming connecting portions for a welded joint with the upper ends of the vertical bars has a transverse to the vertical bars extending web, and at least the upper ends of the vertical bars for the welded joint with the upper edge profile having a connecting portion with a formed by forming reduced cross-section, wherein the vertical grid bars between the connecting portion and a linear longitudinal section with tube cross section having an arc section.

Transport and storage containers of the type mentioned are often arranged for space-saving storage in a stack arrangement in which at least two transport and storage containers are arranged one above the other, such that the upper container with corner and middle feet of the pallet-like base on the upper edge profile of the underneath arranged container is arranged. As a result of this stacking arrangement results in particular for the joints of the grid shell produced by means of a welded connection, a correspondingly high stress, which can reach considerable load peaks in a dynamic load, so for example during the transport of arranged in a stacking containers.

From the EP 1 439 130 A1 a transport and storage container for liquids is known, in which the vertical grid bars of the grid shell in the transition to a formed at the upper end of the grid bar, flattened connecting portion have an arc portion, so that the vertical grid bar in the region of the arc portion has a certain elasticity, the one Reduction or reduction of load peaks allows and thus relieved the weld accordingly.

Due to the arcuate configuration of the vertical bars in the transition to the flattened connecting portions results in this area for the vertical bars a bending load, so that the vertical bars have in the region of the arc section, although relieving the weld elastic compliance, in the transition to the connecting portion but a higher Bending stress are subject to as linear trained vertical bars. In order to have a sufficiently high level of security against a component failure despite this additional bending load, have the with the arc section provided vertical grid bars of a corresponding wall thickness.

The present invention has for its object to provide a transport and storage container whose grating has vertical bars with an arc formed in the transition to the connecting section, wherein the transport and storage container has the required security against component failure and yet with the least possible use of materials can be produced ,

To solve this problem, the transport and storage container according to the invention has the features of claim 1.

According to the invention, the vertical grid bars are designed such that at least their upper ends have a convex cross-sectional contour in the transition from the connecting section to the curved section on their inner side facing the inner container. Due to the special cross-sectional contour in the area of the bend-endangered transition, an increased buckling resistance is already enabled when using pipe material with a comparatively reduced wall thickness.

It follows for the transport and storage container overall, the possibility to guarantee the desired high standard against a container failure even if a pipe material with a comparatively small wall thickness is selected for the production of vertical bars. Even with a relatively small wall thickness of the pipe material can thus be ensured that a fracture of a vertical grid bar due to the exceeding of a critical buckling load can be excluded with sufficient probability. This fracture of a vertical grid bar, ie the component failure of a vertical grid bar, could otherwise result in a fractured end of the vertical grid bar penetrating the inner plastic container, resulting in immediate container failure.

In addition to the weight advantage made possible by the use of pipe material with a comparatively small wall thickness, it is of course another essential advantage arising from the design according to the invention to reduce the production costs of a transport and storage container due to the corresponding savings in material.

It is particularly advantageous if both the upper ends and the lower ends of the vertical grid bars have a convex cross-sectional contour in the transition from the connecting section to the curved section, so that the lower ends also have increased security against component failure.

The convex cross-sectional contour preferably extends from the connecting section via the curved section to the longitudinal section, and the curved section has a recess at least in a transitional region to the connecting section, so that sufficient rigidity is achieved with reduced cross-section in the transitional region.

It is particularly advantageous if the recess is channel-shaped and extends from the connecting section to the longitudinal section.

Due to the cross-sectional shape resulting from the trough-shaped depression in comparison to a vertical grid bar, the curved portion is provided in the transition to the connecting portion without channel-shaped depression, despite the desired elastic compliance in the transition to the connecting portion, a stiffened structure is possible, which has an increased buckling security. The effect of the groove-shaped depression is approximately comparable to the stiffening effect of a bead, with the particularity that extends this groove-shaped depression from the connecting portion on the arc portion to the longitudinal portion. This structural reinforcement of the vertical bars allows compared to vertical bars, the arc section not with such a gutter-like Recess is provided, a still further improved kink resistance when using pipe material with a comparatively reduced wall thickness.

In a particularly advantageous embodiment, the arcuate portion is designed so that edge webs are formed by the recess in the cross section of the arcuate portion, which extend into the connecting portion. In this way, the edge webs, which are formed by the depression and which cause a considerable increase in the buckling stiffness of the cross section compared to a flattened cross section, used in their reaching into the connecting portion extension at the same time to form intersections with the web of the upper edge profile of the grid shell become.

If a kidney-shaped cross-section is formed by the recess, which extends continuously with a convex, the trough-shaped depression opposite wall portion of the lattice rod from the longitudinal section on the arc section to the connecting portion of the grid bar, a further increase the kinking security in the region of the arc section or in Transition from the arc section to the connecting section reached.

In a particularly preferred embodiment of the convex wall portion forms together with the edge webs of the recess in the connecting portions a cup-shaped connection trough with the edge webs connecting another edge web, so that the connecting portion is formed corresponding torsionally rigid.

If the upper ends of the vertical grid bars have humps formed in the transition from the connecting section to the curved section at the edge webs, an increase in rigidity can be achieved directly in the region which is particularly prone to kinking.

If the edge webs at the lower ends of the vertical grid bars in the transition from the connecting portion to the arc portion have a substantially rectilinear extent, the lower ends in comparison to the upper ends are elastically yielding in a special way, in particular at a transversely to the longitudinal extent of the bars occurring vibrational load, educated.

Particularly advantageous for a welded joint between the lower edge profile of the lattice mantle and the lower ends of the vertical lattice bars, when the lower edge profile has connecting regions with a trough-shaped depression, are formed by the edge webs, with the edge webs of the connecting portions of the lower ends of the vertical bars Train crossing points.

Fig. 1

eine perspektivische Darstellung eines Transport- und Lagerbehälters mit einem Gittermantel, der ein oberes und unteres Randprofil aufweist, die mit vertikalen Gitterstäben verbunden sind;

Fig. 2

einen vertikalen Gitterstab in einer Einzeldarstellung;

Fig. 3

den Anschluss eines vertikalen Gitterstabs an das obere Randprofil;

Fig. 3a

eine Querschnittsdarstellung des oberen Gitterstabendes gemäß Schnittlinienverlauf IIIa-IIIa in Fig. 3 ;

Fig. 3b

eine Querschnittsdarstellung des oberen Gitterstabendes gemäß Schnittlinienverlauf IIIb-IIIb in Fig. 3 ;

Fig. 3c

eine Querschnittsdarstellung des oberen Gitterstabendes gemäß Schnittlinienverlauf IIIc-IIIc in Fig. 3 ;

Fig. 4

den in Fig. 3 dargestellten Gitterstab-Anschluss in einer Schnittdarstellung gemäß Schnittlinienverlauf IV-IV in Fig. 3 ;

Fig. 5

eine Ansicht des in Fig. 3 dargestellten Gitterstab-Anschlusses gemäß Ansicht V in Fig. 3 ;

Fig. 6

eine Darstellung des Anschlusses unteren Ende des vertikalen Gitterstabs an das untere Randprofil des in Fig. 1 dargestellten Gittermantels;

Fig. 7

eine Ansicht des in Fig. 6 dargestellten Gitterstabanschlusses gemäß Schnittlinienverlauf VII-VII in Fig. 6 ;

Fig. 8

eine Darstellung des Gitterstab-Anschlusses gemäß Ansicht VIII in Fig. 6 ;

Fig. 9

eine Unteransicht des in Fig. 8 dargestellten Gitterstab-Anschlusses gemäß Ansicht IX in Fig. 8 ;

Fig. 10

eine weitere Ausführungsform eines unteren Endes eines vertikalen Gitterstabs in isometrischer Darstellung;

Fig. 11

eine Darstellung des Anschlusses des in Fig. 10 dargestellten unteren Endes des vertikalen Gitterstabs an das untere Randprofil des in Fig. 1 dargestellten Gittermantels;

Fig. 12

eine Ansicht des in Fig. 11 dargestellten Gitterstabanschlusses gemäß Schnittlinienverlauf XII-XII in Fig. 11 ;

Fig. 13

eine Darstellung des Gitterstab-Anschlusses gemäß Ansicht XIII in Fig. 11 ;

Fig. 14

eine Unteransicht des in Fig. 13 dargestellten Gitterstab-Anschlusses gemäß Ansicht XIV in Fig. 13 .

Hereinafter, a preferred embodiment of the inventively designed transport and storage container is explained in detail with reference to the drawing. Show it:

Fig. 1

a perspective view of a transport and storage container with a grid shell having an upper and lower edge profile, which are connected to vertical bars;

Fig. 2

a vertical grid bar in a single representation;

Fig. 3

the connection of a vertical bar to the upper edge profile;

Fig. 3a

a cross-sectional view of the upper lattice end according to section line IIIa-IIIa in Fig. 3 ;

Fig. 3b

a cross-sectional view of the upper lattice end according to section line IIIb-IIIb in Fig. 3 ;

Fig. 3c

a cross-sectional view of the upper lattice end according to section line IIIc-IIIc in Fig. 3 ;

Fig. 4

the in Fig. 3 shown grid bar connection in a sectional view according to section line IV-IV in Fig. 3 ;

Fig. 5

a view of the in Fig. 3 shown grid bar connection according to view V in Fig. 3 ;

Fig. 6

a representation of the connection lower end of the vertical grid bar to the lower edge profile of in Fig. 1 lattice mantle shown;

Fig. 7

a view of the in Fig. 6 shown grid bar connection according to section line VII-VII in Fig. 6 ;

Fig. 8

a representation of the grid bar connection according to view VIII in Fig. 6 ;

Fig. 9

a bottom view of the in Fig. 8 shown grid bar connection according to view IX in Fig. 8 ;

Fig. 10

a further embodiment of a lower end of a vertical grid bar in isometric view;

Fig. 11

a representation of the connection of in Fig. 10 shown lower end of the vertical grid bar to the lower edge profile of in Fig. 1 lattice mantle shown;

Fig. 12

a view of the in Fig. 11 shown grid line connection according to section line XII-XII in Fig. 11 ;

Fig. 13

a representation of the grid bar connection according to view XIII in Fig. 11 ;

Fig. 14

a bottom view of the in Fig. 13 shown grid bar connection according to view XIV in Fig. 13 ,

Fig. 1 shows a usable as a disposable and reusable container transport and storage container 10 for liquids, an inner container 11 made of plastic with four side walls 12, 13, 14 and 15 and a lower and an upper bottom 16, 17, a formed on the upper bottom 17, having a lid 18 closable filler neck 19 and an integrally formed on the lower portion of the side wall 12 outlet nozzle 20 with a removal fitting 21, further comprising an outer mesh shell 22 of intersecting horizontal and vertical bars 23, 24 made of metal for receiving the inner container 11. The vertical grid bars 24 are welded with an upper end 25 to an upper edge profile 26 and with a lower end 27 to a lower edge profile 28 of the grid shell 22. In addition, the grating jacket 22 is connected via its lower edge profile 28 with a pallet-like base 29.

The pallet-like base frame 29 has a bottom 30 on which the inner container 11 is arranged and which is arranged on corner feet 31, a rear metatarsal not shown, a front, formed from the bottom 30 and middle foot 33 on two lateral middle feet 34. The corner feet 31 and the middle feet 33, 34 are arranged in the present case on a base frame 36 of the pallet-like base frame 29 so that they project beyond the base frame 36 outwardly with stacking extensions 37, which are arranged or formed so that in one here not closer a plurality of transport and storage containers 10 can be arranged one above the other, wherein the stacking extensions 37 of the corner feet 31 and middle feet 33, 34 of the upper transport and storage container 10 rest on the upper edge profile 26 of the mesh shell 22 of the lower transport and storage container.

Fig. 2 shows a vertical grid bar 24 with substantially matching formed upper and lower ends 25, 27, which are formed over a substantially linear, in the drawing only Representation reasons shown interrupted longitudinal section 38 are interconnected. Both the upper end 25 and the lower end 27 has for connection to the upper edge profile 26 and the lower edge profile 28 of the grating casing 22 a flattened connecting portion 39 which has an arc section 41 with the linear longitudinal section 38, which has a tube cross-section 42 , connected is. On its side facing away from the inner container 11 outside 35 of the arc portion 41 is provided with a groove-shaped recess 43 which extends from the connecting portion 39 via the arc portion 41 into the longitudinal portion 38.

At the free end of the connecting portion 39, the channel-shaped recess 43 is bounded by an axial edge web 44, which together with extending in the longitudinal direction of the arc portion 41, formed by the channel-shaped recess 43, mutually parallel edge webs 45, 46 a cup-shaped connection recess 47 in the connecting portion 39 formed.

Towards the longitudinal section 38 of the vertical grid bar 24, the channel-shaped depression 43 rises slightly in the tube cross-section 42 of the longitudinal section 38.

As if from a synopsis of Fig. 3, 4 and 5 becomes clear that show the connection of the vertical bar 24 with its upper end 25 to the upper edge profile 26 of the grid shell 22, the edge webs 45, 46 in the region of the connecting portion 39 with a two parallel edge webs 48, 49 having double web 50 of the upper edge profile 26 is a crossing point 51 with four points of contact 52 to 55, on which a welded connection between the upper edge profile 26 and the upper end 25 of the vertical grid bar 24 is made via welding contacts.

As the Fig. 3, 4 and 5 further clearly show, the edge webs 45, 46 in the transition from the connecting portion 39 to the bow portion 41 to an outer side 35 of the grid jacket 22 ( FIG. Fig. 1 ) directed toward hump 40, which stiffen the cross-sectional transition from the connecting portion 39 to the bow portion 41.

In particular Fig. 3 1, a wall section 56 lying opposite the trough-shaped recess 43 points on an inner container 11 ( FIG. Fig. 1 ) facing the inside 32 of the arcuate portion 41 has a convex cross-sectional contour 58, so that the upper end 25 of the vertical grid bar 24 from the connecting portion 39 via the arc portion 41 to the longitudinal portion 38 toward an approximately kidney-shaped cross section, which, as in the Fig. 3a, 3b and 3c shown, in the respective sections (connecting portion 39, arc portion 41 and longitudinal portion 38) has a different lumen or a different size, but in all sections opposite to a formed by the channel-shaped depression 43 recess 57 has a convex cross-sectional contour 58, which differs from Connecting portion 39 extends over the arc portion 41 to the longitudinal portion 38.

As in the Fig. 6 to 9 shown, the lower end 27 of the vertical grid bar 24 is connected to the lower edge profile 28 of the grid shell 22, wherein, in particular Fig. 8 shows, formed in the lower edge profile 28 in the lower edge profile 28 trough-shaped recess 28 in the longitudinal direction of the edge profile 28 two parallel edge webs 61, 62, with the edge webs 45, 46 in the connecting portion 39 of the lower end 27 of the vertical grid bar 24th form at a crossing point 63 four points of contact 64 to 67, where the lower edge profile 28 and the lower end 27 of the vertical grid bar 24 are integrally connected to one another via a contact welding.

Fig. 10 shows a vertical grid bar 71 having a deviating from its upper end 25 formed lower end 70. The top End 25 of the grid bar 71 is formed coincident with the upper end 25 of the grid bar 24.

The grid bar 71 may alternatively to the grid bar 24 to form the in Fig. 1 lattice mantle 22 shown are used.

As in the Fig. 11 to 14 illustrated, deviating from the upper end 25 formed lower end 70 of the vertical grid bar 71 is connected in the same way with the lower edge profile of the grid shell 22, as the above-explained lower end 27 of the grid bar 24. Wie in particular a comparison of FIGS. 7 and 12 makes clear, the bars 24 and 71 differ in the region of their lower ends 27 bzw.70 in particular by the fact that the lower end 70 of the grid bar 71 has a comparatively elongated and opposite the lower end 27 of the grid bar 24 extended arc portion 72.

Incidentally, the lower end 70 of the grid bar 71 has a substantially identical to the lower end 27 of the grid bar 24 formed connecting portion 39, in particular edge webs 73, 74, extending from the connecting portion 39 in the arc section 72 and beyond this extend to the longitudinal portion 38 of the grid bar 71. Furthermore, between the edge webs 73, 74 opposite to the by the convex cross-sectional contour 58 ( FIG. Fig. 14 ) formed convex wall portion 56 a recess 76 ( Fig. 11 ) formed. In contrast to the edge webs 45 and 46 at the lower end 27 of the grid bar 24, however, the edge webs 73, 74 have no projection 40 directed towards the outside 35, but have a substantially rectilinear extent.

Due to the above-described embodiment of the lower end 70 of the grid bar 71 has this compared to the upper end 25 of the grid bar 71, although in particular due to the not formed in the edge webs 73, 74 projection 40 and the comparatively greater length of the arch portion 72 opposite the arch portion 41, a reduced rigidity. However, the lower end 70 has a greater elasticity than the upper end 25, in particular due to the comparatively slim design of the arcuate portion 72. The in Fig. 10 illustrated grid bar 71 is thus designed at its upper end 25 in view of a particularly high buckling resistance, whereas the lower end 70 of the grid bar 71 is designed in particular with regard to a more elastic design.

In this way, the recognition is taken into account in a special way that it is essential for the highest possible security against container failure, especially in a stack arrangement of several stacked containers, the grating bars at their upper ends designed to be mainly kink-resistant, whereas the bars at their lower ends should have rather good damping properties; especially with dynamic loading of the container, as occurs in a container transport.

Claims (10)

Transport and storage container (10) for liquids with a pallet-like base (29) for an inner container (11) made of plastic with four side walls (12 to 15), a lower and an upper floor (16, 17), one at the upper floor ( 17) formed, closable filler neck (19) and an integrally formed on the lower portion of a side wall (12) outlet nozzle (20) with a removal fitting (21) and a grid shell (22) with horizontal and vertical bars (23, 24, 71) made of metal for receiving the inner container, wherein ends (25, 27, 70) of the formed as a hollow profile vertical bars (24, 71) are welded to a lower and an upper peripheral edge profile (28, 26) of the grid shell, wherein at least the upper edge profile of Forming of connection areas for a welded joint with the upper ends of the vertical grid bars has a transverse to the vertical bars extending web (50), and at least di e upper ends of the vertical bars for the welded joint with the upper edge profile having a connecting portion (39) formed with a reduced reduced cross section, wherein the vertical grid bars between the connecting portion and a linear longitudinal section (38) with tube cross-section (42) has an arc section (41),
characterized,
in that at least the upper ends of the vertical grid bars in the transition from the connecting section to the curved section have a convex cross-sectional contour (58) on their inner side (32) facing the inner container. Container according to claim 1,
characterized,
in that both the upper ends (25) and the lower ends (27, 70) of the vertical grid bars (24) have a convex cross-sectional contour (58) in the transition from the connecting section to the curved section. Container according to claim 1 or 2,
characterized,
in that the convex cross-sectional contour (58) extends from the connecting section (39) over the curved section (41) into the longitudinal section (38) and the curved section has a recess (43, 76) at least in a transition region to the connecting section. Container according to claim 3,
characterized,
in that the depression (43, 76) is channel-shaped and extends from the connection section (39) to the longitudinal section (38). Container according to claim 3 or 4,
characterized,
that through the recess (43, 76) in cross-section of the arc portion to be (41) designed edge webs (45, 46, 73, 74) which extend into the connecting portion (39). Container according to one of the preceding claims,
characterized
in that a kidney-shaped cross-section is formed through the depression (43, 76), which projects with a convex, opposite the depression wall section (56) of the grid bar (24) from the longitudinal section (38) over the arc section (41) into the connecting section (39 ) of the grid bar extends. Container according to claim 6,
characterized,
in that the convex wall section (56) together with the edge webs (45, 46, 73, 74) of the recess (43, 76) in the connecting section (39) forms a cup-shaped connecting depression (47) with an edge web (44) connecting the edge webs. Container according to one of the preceding claims,
characterized,
having the upper ends (25) of the vertical grating bars (24, 71) in the transition from the connecting portion (39) to the bow portion (41) of the edge webs (45, 46) formed bosses (40). Container according to one of the preceding claims,
characterized,
that the edge webs (73, 74) at the lower ends (70) of the vertical grating bars (71) in the transition from the connecting portion (39) to the bow portion (72) having a substantially rectilinear extension. Container according to one of the preceding claims,
characterized,
in that, for the welded connection between the lower edge profile (28) of the lattice mantle (22) and the lower ends (27, 70) of the vertical lattice bars (24, 71), the lower edge profile (28) has connecting regions with a trough-shaped recess (60) the Edge webs (61, 62) are formed, which form with the edge webs (45, 46, 73, 74) of the connecting portions (39) of the lower ends of the vertical bars crossing points (63).

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