EP1055613A2 - Lattice, in particular cage of a pallet container - Google Patents

Abstract

The rim of the base (3) has an outward curve in the form of a shell. The base surface slopes down towards the middle of one the shorter sides of the rectangular base. The surface enclosed by the outwardly curved rim is shaped like a flat saddle or tent roof whose edge from the middle of th one shorter side of the rectangle slopes gently down on both sides and along the two longer sides of the rectangle. The base surface then leads into a groove (26) running along the other shorter side of the rectangle to deepen towards the middle of the shorter rectangle side.

Description

The invention relates to a grid of intersecting bars, in particular as a wall a basket for holding a plastic container in the overall arrangement a pallet container for storing and / or transporting filling goods.

In conventional grids of this type, the bars consist of round bars welded at the crossing points. Pallet containers are also known as lattice jackets with tubular lattice bars that are dented at the crossing points and connected by resistance welding.
The bars made of round bars are heavy because they require a tight grid pattern for the contents, given the static requirements. Grid made of tubular bars are lighter. However, their manufacture from the tubular rods is cumbersome in that the indentations have to be produced in a separate work step at predetermined locations and the lattice rods can then only be used in the manner determined thereby.

The invention has for its object to provide a grid that with a predetermined static requirement by the filling goods is as light as possible and no preparation of the Crossing points on the bars are required.

According to the invention, this purpose is achieved in that those running in one direction Lattice bars consist of an open profile, the two lying in the same plane, has edges that are folded outwards, and those that run in the other direction Lattice bars also consist of such a profile or of a closed one Profile, which has at least one flat profile wall and a bars with the others with the edges folded against each other or with the folded edges of a lattice bars on said flat profile wall other bars are assembled and connected to the contact surfaces.

With the same stiffness, this lattice is also lighter than the known lattice made from the tubular lattice bars, which, because of the weakening of the indentations, must have a larger material cross section overall. The welding of the absolutely flat surfaces at the crossing points of the grid according to the invention is more controlled than at the indentations; Instead of spot welding, projection welding is also possible, basically also resistance welding. In addition, the open profile can be folded from steel tape, which is very easy to completely galvanize, in contrast to the pipes that are always not galvanized inside.
In comparison to the bars made of round iron, the weight saving also has the advantage of a significantly lower number of crossings that have to be welded.
Instead of welding or additionally, a connection by means of stamping and / or stamping is also possible at the folded edges.

For applications that require greater torsional rigidity or kink resistance, one becomes an open profile for one of the bars and a closed profile for the other bars Use profile.

The open profile has the folded edges, for example on a profile section of approximately square cross-section.
For use in a pallet container, however, one could prefer the design that the open profile has the folded edges on a profile section which has a rectangular cross-sectional part following the bent edges and a trapezoidal cross-sectional part following this.
Due to the trapezoidal cross-section, the pallet containers can slide apart if their lattice shells come together when carelessly placed against one another.

So far as it is desirable to increase strength or increase accident safety the folded edges can be folded over at the edge.

The profile is thereby stiffened and the edge edges are rounded, at the same time producing a larger radius.
In a further embodiment, the grille is provided with an edging profile at its edges.

This in turn serves both strength and safety. Particularly useful it is made at the top and bottom of a grid with vertical bars open profile: An open, folded sheet metal profile is no longer at unmounted ends rigid and the corners pose a risk of injury.

In more detail, the edging profile is proposed in two variants:

In one embodiment, an essentially U-shaped, preferably oblong, Profile provided, and the bordered bars ends are at least on their folded edges with one leg of the U-shaped profile, preferably also welded to the other leg on the opposite side and / or connected by joining embossing and / or joining punching.

In the other embodiment it is provided that the ends of the bars are flattened and the edging profile rests on the ends of the bars with two parallel edges and welded to them at least on one side, preferably on both sides is and / or is connected by joining embossing and / or punching.

In most cases the grid is installed vertically for the bottom of the U-shaped profile will usually be the most convenient. The vertical Lattice bars remain more stable than with flattened ends, and the U-shaped one Profile offers various support and connection options. Then it can with its, usually flat, underside even on feet or other supports be set. The upper edges of the, usually also flat, side walls of the U-shaped Profiles can be used to support and connect to other components. When using the grid on a pallet container in particular they serve to support the floor and connect to it.

The other border profile, intended for flattened lattice bar ends, should be in most convenient for the top of the grid. It can be round or in any case be designed rounded and is therefore suitable for touching what am upper margin, e.g. a basket, is occasionally necessary. In particular intended use of the grid on a pallet container have the profile and on the other hand, its attachment to flattened bars ends has sufficient strength, put another pallet container on it.

Fig. 1

zeigt ein Gitter in Ansicht,

Fig. 2

zeigt einen mit II bezeichneten Ausschnitt aus Fig. 1 in größerem Maßstab,

Fig. 3

zeigt den Ausschnitt in Ansicht gemäß Fig. 1 und 2 von links,

Fig. 4

zeigt einen in Fig. 1 mit IV bezeichneten Ausschnitt in größerem Maßstab gemäß Fig. 1 von rechts,

Fig. 5

zeigt einen in Fig. 1 mit V bezeichneten Ausschnitt in größerem Maßstab gemäß Fig. 1 von links,

Fig. 6

zeigt eine Abwandlung zu Fig. 3 und

Fig. 7

zeigt einen unter Verwendung des Gitters nach Fig. 1 hergestellten Palettenbehälter in isometrischer Darstellung.

The drawings show an exemplary embodiment and an application example of the invention.

Fig. 1

shows a grid in view,

Fig. 2

1 shows a section from FIG. 1, designated II, on a larger scale,

Fig. 3

shows the detail in the view of FIGS. 1 and 2 from the left,

Fig. 4

1 shows a section designated IV in FIG. 1 on a larger scale according to FIG. 1 from the right,

Fig. 5

1 shows a section marked V in FIG. 1 on a larger scale from FIG. 1 from the left,

Fig. 6

shows a modification to Fig. 3 and

Fig. 7

shows a pallet container manufactured using the grid according to FIG. 1 in an isometric view.

The grid is composed of vertical bars 1, horizontal bars 2, a U-shaped profile 3, which surrounds the lower ends of the vertical bars 1, and a profile 4, which surrounds the upper ends of the vertical bars 1. The bars 1 and 2 consist of a hat profile, which has two edges 6 which are bent outwards on a profile section 5 of square cross section. They lie at the intersections with the bevelled edges 6 and are spot-welded, hump-welded or resistance-welded on the contact surfaces, as indicated in FIG. 2 at 7.
Fig. 6 shows the modification that the profile section 5 is replaced by a section composed of a rectangular cross-sectional part 7 and a trapezoidal cross-sectional part 8.

The cross section of the profile 3 is shown in Fig. 4. In the U-shaped profile, the hat profile of the lattice bars 1 reaching to the bottom of the profile rests on both legs, with the bevelled edges 6 on one leg and with the end face 10 of the profile section 5 on the other leg. Welding is possible on all three contact surfaces. It is made at least on the two beveled edges 6.
The other profile leg is cranked outwards, a horizontal contact surface 11 and a vertical flanged edge 12 being created. The inner profile leg is turned over at the level of the offset and thus forms a stiffened support 13. These functions will be discussed further.

At the upper edge of the grid, the hat profile of the bars 1 is compressed at 14. The profile 4 attached here is on both sides of the flattened section and is welded to it on both sides.

The pallet container 15 produced using the grid described above exists from a basket 16, the bottom 17 of which is designed as a flat shell by a base frame 18 is added to a pallet 19, and a plastic container received by the basket 20. The plastic container 20 is cuboid in the blow molding process rounded edges and corners. The bottom 3 points in adaptation to the Bottom of the plastic container 20 an arched edge area. The grid jacket 21 of the basket 16 is adjusted at the level of the plastic container 20 whose circumference.

The lattice jacket 21 has been produced from the lattice shown in FIG the four side edges of the basket 16 bent and narrower at the center of the one Side surface has been closed by welding, with the ends of the horizontal Lattice bars 2 have been placed overlapping one another.

The bottom 17 is placed on the support 13 and the support surface 11 of the profile 3, the bars 1 having space in them adapted cutouts of the edge of the base 17. The flanged edge 12 is flanged over the edge of the bottom 17. So that the bottom 17 is connected to the grid jacket 21. The basket 16 thus created is screwed to the base frame 18.
At 22, the plastic container 6 has an outlet, not shown.

All components of the basket 16 and the base frame 18 preferably consist of galvanized steel sheet.

Claims (10)

Grid of intersecting grid bars (1; 2), in particular as a wall (21) of a basket (16) for receiving a plastic container (20) in the overall arrangement of a pallet container (15) for storing and / or transporting filling goods,
characterized,
that the bars (2) running in one direction consist of an open profile which has two edges (6) lying in the same plane and bent outwards, and the bars (1) running in the other direction also consist of such a profile or from a closed profile, which has at least one flat profile wall, and one grid bars (2) with the other (1) with the folded edges (6) resting against one another or with the folded edges of the one grid bars against the flat profile wall mentioned other bars are assembled and connected to the contact surfaces (6). Grid according to claim 1,
characterized,
that the bars (1; 2) are connected to one another by welding, preferably spot welding or projection welding. Grid according to claim 1 or 2,
characterized,
that the lattice bars, both of which have folded edges, are connected to one another by joining embossing and / or joining punching. Grid according to one of claims 1 to 3,
characterized,
that the open profile has the folded edges (6) on a profile section (5) of approximately square cross-section. Grid according to one of claims 1 to 3,
characterized,
that the open profile has the folded edges (6) on a profile section which has a rectangular cross-sectional part (8) following the bent edges (6) and a trapezoidal cross-section (9) following this. Grid according to one of claims 1 to 5,
characterized,
that the folded edges are turned over at the edges. Grid according to one of claims 1 to 6,
characterized,
that it is provided at its edges with a border profile (3; 4). Grid according to claim 7,
characterized,
that the edging profile is an essentially U-shaped, preferably elongated rectangular, profile (4) and the bordered lattice bar ends at least on their bent edges (6) with one leg of the U-shaped profile (3), preferably also on the opposite Side with the other leg, welded and / or connected by stamping and / or stamping. Grid according to claim 7,
characterized,
that the lattice rod ends are flattened (14) and the edging profile rests with two parallel edges on the lattice rod ends and is preferably welded to them on both sides and / or is connected by joining embossing and / or joining punching. Grid according to one of claims 1 to 9,
characterized,
that the profiles of the bars (1; 2) consist of folded, preferably galvanized, sheet steel.

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