MX2014010017A - Pallet container. - Google Patents

Abstract

The present invention relates to a pallet container (10) having a thin-walled inner container (12) made of thermoplastic material for storing and transporting liquid or flowable filling materials, having a lattice profile supporting casing (14) that closely encloses the inner container (12) as a supporting casing, and having a base pallet (16) on which the inner container (12) rests and to which the lattice profile supporting casing (14) is firmly connected, wherein the lattice profile supporting casing (14) comprises intersecting vertical (20) and horizontal (22) profile rods which are connected together at their intersecting points by mechanical joining, such as clinching or punch riveting, and wherein the profile rods (20, 22) are additionally fixed in a rotationally secure manner at their connecting points (18, 24, 26) via a mechanical form fit (42, 43) or a form-fitting bearing region (42, 43).

Description

CONTAINER WITH TARIMA Field of the Invention The invention relates to a pallet container having a rigid, thin-walled internal container, made of thermoplastic material for the storage and transport of liquid or fluid contents, having a lattice frame which, as a support shirt, locks tightly the inner container, and having a base platform on which the inner container rests and to which the lattice frame is fixed, being that the lattice frame comprises vertical and horizontal profile bars that are fixed to each other at the points of crossing.

Background of the Invention Pallet containers are used for the transport and storage of liquid or fluid contents, in some cases dangerous. During the transport of filled pallets - particularly in the case of contents with a high relative density and stacked pallet containers - on bad roads using load trucks with rigid suspension, or during transport by rail or sea, Lattice frames undergo considerable efforts. This load induced by transport, by virtue of the stacked load, in the event that pallet containers are stacked, Ref. 250205 subject the lattice frame to compression stress in the axial direction, and as a result of sustained dynamic wave movements of the liquid contents, subject the lattice frames, usually welded, in addition to alternative bending stresses in the radial direction . The welded joints or the welding regions of the crossing points of the trellis bars or vertical and horizontal trellis tubes are the points subject to the greatest efforts. These efforts, after a certain period of time can result in the rupture of the welded connections or the trellis tubes, and therefore that means that the necessary level of reliability is no longer ensured for stacking and transporting these containers with pallet. .

All known pallet containers with tubular lattice frames have welded connections at the cross points of the tubular bars; in the case of some tarpaulin containers, for the purpose of releasing the weld regions from the load, bending points are formed on the tubular rods which are elastic to some extent along the weld points.

Containers with pallets with a welded tubular lattice frame are generally known, for example from EP 0 734 967 A (Sch). The tubular lattice frame of the pallet container known by this The document comprises a round tubular profile which, at the welded crossing points, is indented in a pronounced extension in the shape of a recess, and therefore, with the crossed tubes, form four contact points for mutual welding. The bending points that are elastic to some extent are produced by additional depressions of the end regions of the weld cavities.

EP 0 755 863 A1 (Fust) describes another pallet container from which the bars of the lattice have a square tubular profile which is partially partially flattened, only in the crossing region, in order to be able to weld better and thus form the Four points of contact for welding. For the rest, the tubular profile has a constant cross section without concavities over its entire length between the crossing points.

DE 196 42 242 A1 (Rot) describes another pallet container having a lattice frame made of open trapezoidal profile bars and a profile that is constant over the length of each bar. The four points of welding at the crossing points are obtained here by the flattened outwardly flat surfaces of the profile bars.

Another container with pallet that has in its All of a continuous tubular profile is known from US 6,244,453 Bl (Mam). The four welding points at the crossing points of the bars are obtained here by means of continuous square profile depressions on two sides or four sides with longitudinal ribs on the outside.

Document EP 1 289 852 (Mau) describes another pallet container from which the bars of the trellis have a trapezoidal tubular profile and four weld points in the crossing region. The concavities, which act as predetermined bending points, are fabricated, in the region along the weld points of the tubular rods, on that side of the tubes which is located opposite the welding region.

Another container with pallet having four welding points in the region of crossing of the tubular rods is known from EP 1 618 047 Bl (Mau). The elasticity behavior of the tubular lattice frame is obtained here by a reduction in the cross-sectional height of the tubes between or outside the welded crossing points.

Document DE A 10 2010 033 738 1 (R. Bu) describes a container with special pallet of which the metal cage is characterized in that the fastening of the profile bars of the metal cage is effected by riveting by stamped with perforating rivets, riveted with clinch type TOX technique or riveted by stamping without conventional perforation in the form of a force-drag connection connection and form-fitting connection.

Another pallet container with spot welding connections and riveted connections between the ends of the vertical profile bars of the lattice profile support sleeve and the upper horizontal profile bar is also known from DE A 10 2005 031 940 ( Sch).

Finally, EP 0 916 592 A1 (vL) discloses a pallet container whose vertical and horizontal tubular bars have diameters that differ and are connected in a way that the tubular bars having the larger diameter are perforated and the tubular bars that they have the smaller diameter are passed through the perforations in the tubular rods having the larger diameter, the tubular rods being additionally welded at the crossing points.

Disadvantages of the prior art The tubular lattice frames known hitherto which have in their entirety a tubular profile of the uniform lattice and two or four weld points at the crossing points all suffer from the disadvantage that the tubular, horizontal and vertical lattice bars are In total they become too rigid to flexion and torsion when exposed to alternative bending stresses that occur during the transportation of filled pallets. Even after a comparatively short period of effort, this results in fatigue cracks and the breaking of the bars, in particular in the vicinity of the welded crossing points of the lattice bars, or the welding points of the crossing points. They break and break.

In the case of double stacking of pallets with pallets, in particular the connection between the upper horizontal profile bar and the vertical profile bars is a weak point.

Those tubular lattice frames having round tubes welded with four solder points, for example known from EP 0 734 967 A2 (Sch), and having a considerably reduced cross-sectional height of the tubes in the region of the points cross-section (without continuous tube profile, on all sides nicked at the same depth and / or a reduced cross section height of the tubes at the crossing points of the bars) suffer from the "disadvantage that considerable load spikes occur in these regions of reduced tube cross-section and, as a result, pre-programmed, so to speak, points of break or deformation, for example in the case of drop tests, in the case of tests of internal hydraulic pressure and in the case of the alternative effort of bending due to the load induced by the transportation.

These known tubular lattice frames having four weld points in the region of intersection of tubular bars and predetermined bending points or adjacent predetermined bending regions which are problematic - known from EP 1 289 852 and EP 1 618 047 - they suffer from the disadvantage that the tubular bar regions are not subjected to uniform loading, and it is only the reduced tubular bar cross-sectional regions that have to absorb the alternative bending stress due to the load induced by the transportation.

In principle it is necessary that all the tubular bars of the tubular lattice frames with predetermined bending points in the initial profile have excessive dimensions, because it is only the reduced tubular bar cross-section height at the predetermined bending points that it absorbs the alternative bending stress, but this reduces the static load capacity of the tubular lattice frame as a whole.

All well-known pallet containers having welded tubular lattice frames or having Welded wire gratings as a support shirt suffer from the following disadvantages: The welding method used is resistance welding, a conventional welding method with a high level of energy consumption; not all materials can be welded by resistance welding and, during long periods of transportation, the bending surge load that occurs can result in the breaking of the weld seams.

Those tubular lattice frames having spot welding connections and an additional riveted connection between the ends of the vertical profile bars of the profile-latched support sleeve and the upper horizontal profile bar - known for example from the document DE 10 2005 031 940 - apart from involving the disadvantageous point welding, they do not have additional mechanical positive connection connections at the other points of intersection of the vertical and horizontal profile bars of the tubular lattice frame.

Those known tubular lattice frames, made of bar profiles that form the cage, which form the so-called union connections by riveting by stamping with piercing rivets, riveting clinch technique type TOX or riveting by stamping without conventional perforation suffer from the following misfortunes: If the profiles used for the tubular lattice frame are the conventional ones with a bar width of 15 to 25 mm, the size or dimensions of the union connection means that it is only possible to make a joint connection, or a maximum of two junction connections at each crossing point of the tubular lattice frame, and these junction connections must absorb the same forces as in the case of a pallet container having a tubular lattice frame with a continuous profile of the lattice tubes and Four welding points at the crossing points. If a trellis tube profile made of a non-metallic material is used, then the mechanical load bearing capacity of the joint connection is further reduced by virtue of the poor physical characteristics of the non-metallic material.

Where the profile bars of the metal cage are fixed only by riveting by punching with riveting punches, riveting with clinch type TOX technique or riveting by stamping without conventional punching in the form of a force-drag connection connection and dragging, as in the document DE A 10 2010 033 738 1 (R. Bu), it is disadvantageous that the connection connections must absorb all the alternative effort of bending and cutting forces (battery charge). This effort, after spending a certain period of time can easily result in an undue burden.

If the lattice cage consists of tubular rods, and if the connection of the tubular rods is carried out in such a way that one of the tubular rods is drilled and the other is passed through the borehole (EP 0 916 592 Al, vL) , bending rigid pipes having a large diameter are severely weakened in a disadvantageous manner by the introduction of drilled holes or quite by removing material from the pipe wall. In addition, the assembly by inserting different tubular rods one inside another results in unreasonably high production costs.

Brief Description of the Invention objective It is an object of the present invention to specify a pallet container of the type under consideration having a profile support sleeve-lattice made of fixed profile bars and no longer suffering from the disadvantages of the prior art - being taken into account the load of the pile caused by a container with full pallet stacked on top (double stacking) in addition to the conventional wave load caused by the liquid content during transport.

Problem solution This problem is solved according to the invention by means of a pallet with pallet having the characteristics of claim 1.

The dependent claims contain advantageous and convenient embodiments of the invention.

The container with liquid pallet according to the invention having a profile-latched support sleeve which, as a support sleeve, tightly encloses the inner container, and which has a base platform on which the inner container rests and which is fixed the profile-lattice support shirt, where the profile support shirt-latched, which can be rigid or folding, comprises vertical and horizontal profile bars that are fixed to each other at crossing points , it is distinguished by the following advantages: There is no welding at all connection sites of the profile support flange - latched, the connection is made by mechanical connection, it is also possible to connect profiles made of materials that can not be subjected to resistance welding, for example it is possible to that connect one to another profile bars made of steel, aluminum, composite materials and plastic, the connection area does not suffer any thermal influence, and the mechanical union, because it has a lower level of consumption of energy, it is more economical. The profile bars may have different wall thicknesses and be configured in the form of a bar profile, formed profile or hollow profile. The mechanical connection connections can also be produced without preliminary perforations, with access on one side. Mechanical link connections have high dynamic load bearing capabilities.

In addition, the profile bars are locked relative to each other at their crossing points by means of a positive mechanical connection, and are mechanically supported at the cross joints of the lattice profiles of the upper and lower horizontal profile bar, in order to of relieving the load of the union connections riveted by stamping without perforation or rivet by stamping perforating rivets. In the case of a mechanical connection connection by cross-connection of the profile-lattice, in particular in the case of profile support sleeves - folding or foldable latch, comprising separate lateral parts, this positive mechanical connection also reinforces its strength of design.

In the case of double stacking of pallets with pallets, the pile load caused by the pallet with pallet stacked on top must be absorbed by the upper horizontal profile bar of the profile support sheet-trellis and transferred to the pallet basis through the vertical profile bars and the lower horizontal profile bar. Here, the connection connections of riveting by stamping with piercing rivets, riveting by stamping without perforation or stamped joining (clinch joining) are effectively relieved from the pile load by additional supporting surfaces in the upper and lower cross joints of the profile. lattice.

In one embodiment of the invention, the profile-lattice support sleeve of a pallet container can be of a collapsible or foldable configuration. With the same surface area at the base, the height of the pallet container is reduced here to about 1/3 of the original height. The advantage with this configuration is that the reduced volume of the container with collapsed pallet allows to reduce to a considerable degree the transportation costs and the costs to store the container with pallet without an internal container inserted in it.

Brief Description of the Figures The invention will be described and explained in more detail below with reference to exemplary embodiments that are schematically illustrated in the figures, in which: Figure 1 shows a front elevation view of a pallet container according to the invention, Figure 2 shows a side elevational view of a pallet container according to the invention, Figure 3 shows a view of a double stacked pallet container according to the invention, Figure 4 shows a view of a profile-lattice crossing point according to the invention (18 in Figure 2), Figure 5 shows a section A-B through a vertical profile bar of figure 4, Figure 6 shows a section C-D through a profile crossing point-latched in figure 4 with a mechanical joint connection produced by riveting by punching without perforation, Figure 7 shows a section C-D through another profile-lattice crossing point of figure 4 with a mechanical joint connection produced by riveting by punching with piercing rivet using a semi-tubular rivet, Figure 8 shows a section C-D through another profile-lattice crossing point of figure 4 with a mechanical joint connection produced by riveting by stamping with piercing rivet using a solid rivet, Figure 9 shows a section E-F through a horizontal profile bar support means of figure 4, Figure 10 shows a section E-F through a horizontal profile bar frame of figure 4, Figure 11 shows a section E-F through another horizontal profile bar frame of figure 4, Figure 12 shows a view of a cross-stitch junction of a top trellis profile (24 in Figure 2), Figure 13 shows a standard profile bar connection, horizontal / vertical upper profile bar, according to section G-H in figure 12, Figure 14 shows a profile bar connection according to the invention, horizontal / vertical upper profile bar, according to section G-H of figure 12, Figure 15 shows another profile bar connection according to the invention, horizontal / vertical upper profile bar, according to section G-H of figure 12, Figure 16 shows another profile bar connection according to the invention, horizontal / vertical upper profile bar, according to section G-H of figure 12, Figure 17 shows a view of a profile crossing junction-latch according to the invention on the bottom (26 in Figure 2), Figure 18 shows a standard profile bar connection, horizontal / vertical lower profile bar, in accordance with section I-J of figure 17, Figure 19 shows a profile bar connection according to the invention, horizontal / vertical lower profile bar according to section I-J of figure 17, Figure 20 shows another profile bar connection according to the invention, horizontal / vertical lower profile bar according to section I-J of figure 17, and Figure 21 shows another profile bar connection according to the invention, horizontal / vertical lower profile bar according to section I-J of figure 17.

Detailed description of the invention Figure 1 illustrates a front elevation view of a pallet container 10 according to the invention having a stiff, thin walled inner container 12, made of a thermoplastic material, having a support shirt profile-lattice 14 and having a base platform 16 (pallet width 1000 mm). Figure 2 also shows a side elevation view of the pallet 10 (pallet length 1200 mm).

Figure 3 shows a container with pallet 10 according to the invention, double stacked. This type of stacking is conventional during transport, for example by truck or in sea freight containers in accordance with ISO 668. In the case of double stacking, the support sleeve 14 of the profile -reinforced pallet container 10 Stacked underneath is subjected to loads during transport, not only by the wave forces caused by its content (radial load), but also by the weight of the container with pallet 10 stacked on top (axial load).

Figure 4 shows a profile-lattice crossing point 18 of the support sleeve 14 of the profile -retained in accordance with the invention, formed by two U-shaped bar profiles 28 in accordance with Figure 5. The sections CD of figures 4, 12 and 17 show the horizontal profile bars 22 and vertical bars 20 with their mechanical connection connection. Sections C-D in Figures 4, 12 and 17 are the same; the mechanical connection connections can be made according to figures 6, 7 and 8.

Figure 6 shows a mechanical connection connection between the profile bars with vertical U-shaped 20 and horizontally 22 produced by riveting. The riveted mechanical connection is obtained by inserting and displacing material from the rivet cavity region 30 of the horizontal profile bar 22 and the subsequent insertion and pressing operations in the region of the riveted joint 32 of the vertical profile bar 20. With this mechanical connection is advantageous in that there is only a low level of energy consumption and no thermal influence is made in any way on the joint area.

Figure 7 shows another mechanical connection connection according to the invention between the vertical U-shaped profile bars 20 and horizontal 22. The mechanical connection connection is made by the semi-tubular rivet 34, which forms the joining region of Semitubular rivet 36 by means of stamped riveting with perforating rivet and in this way permanently connects vertical profile bars 20 and horizontal bars 22.

Another mechanical joining connection according to the invention is the method of riveting stamped with piercing rivet using a solid rivet 38 which is illustrated in Fig. 8. The mechanical joining connection between profile bars 20 and 22 is produced by riveting stamping with solid perforating rivet 38 and by moving material into the joint region 40 of the rivet stamped with solid perforating rivet 38. Stamped riveting with a piercing rivet using a solid rivet 38, as with rivet-stamped riveting using semitubular rivet 34 is performed without preliminary perforation, and is therefore easy to automate.

Figures 9, 10 and 11 show the horizontal profile bar 22 spiked on the vertical profile bar 20 at a profile-lattice crossing point 18 of the profile-lattice support jacket 14 according to the invention, wherein the horizontal profile bar 22 is additionally fixed in a form-driving manner to the vertical profile bar 20 via the accommodation slot 42 in FIG. 10 or via the punching centering means 43 in FIG. 11.

The view of a profile-lattice cross-link according to the invention in the upper part 24 of the profile-lattice support sleeve 14 is illustrated in FIG. 12, wherein the mechanical union connection riveted by stamping without perforation or riveted by stamping with piercing rivet between the upper horizontal profile bar 22 and the vertical profile bar 20 can be effected as illustrated in figures 6, 7 and 8 in section CD.

Figures 13, 14, 15 and 16 show the bar upper horizontal profile 22 abutting against / resting on the vertical profile bar 20, wherein the horizontal profile bar 22 is supported via the shoulder 44 in figure 15 or via the lower centering means punched 43 in figure 14. Figure 16 shows a horizontal upper profile bar with a modified U shape 22 with a support arm 45, which fulfills the task of providing support on the vertical profile bar 20. Figure 13 illustrates the horizontal profile bar 22 spreaded on the vertical profile bar 20 without any vertical support.

The view of a cross-section of profile-lattice according to the invention in the base 26 is illustrated in figure 17, where the mechanical joint connection riveted by stamping without perforation or riveted by stamping with riveting perforator between the profile bar horizontal 22 and the vertical profile bar 20 can be effected as illustrated in figures 6, 7 and 8 in section CD.

Figures 18, 19, 20 and 21 show the vertical profile bar 20 abutting against / resting on the lower horizontal profile bar 22, where the vertical profile bar 20 additionally rests, in figure 20, on a profile bar bottom horizontal T-shaped 22 with a support arm 47, or, in figure 19, on a punched shoulder 46. Figure 21 shows a horizontal profile bar L-shaped 22 with two regions of abutment 48, which serve to support the vertical profile bar 20. Figure 18 shows the horizontal profile bar 22 abutting against the vertical profile bar 20 without an additional vertical support for the vertical profile bar 20.

List of reference symbols 10 Container with pallet 12 Inner container 14 Profile-lattice support shirt 16 Base deck 18 Profile-lattice crossing point 20 Vertical profile bar 22 Horizontal profile bar 24 Union cross-profile-lattice on top 26 Cross-linked profile - lattice at the bottom 28 U-shaped bar profile 30 Printed rivet cavity without perforation 32 Region of union by rivet stamped without perforation 34 Semitubular rivet Region of union by rivet stamped with semi-tubular rivet Solid rivet for rivet stamped with rivet perforator Region of union by rivet stamped with solid perforator rivet 42 Fitting slot for horizontal profile bar 43 Centering medium launched with punch 44 Support region for horizontal profile bar 45 Support arm 46 Dropped shoulder with punch for vertical profile bar 47 Support arm 48 Support region for vertical profile bar It is noted that in relation to this date, the best method known to the applicant to practice said invention is that which is clear from the present description of the invention.

Claims (10)

CLAIMS Having described the invention as above, the content of the following claims is claimed as property:

1. Container with platform that has a thin-walled inner container made of thermoplastic material for the storage and transport of liquid or fluid contents, which has a profile-lattice support shirt that, as a support shirt, tightly encloses the inner container, and which It has a base platform on which the inner container rests and to which the profile-lattice support shirt is fixed, where the profile-lattice support shirt comprises horizontal and vertical profile bars that intersect, which in their crossing points are fixed to each other in a form-dragging manner by means of a mechanical drive and in this way they are fixed in a rotationally secure manner by mechanical interlocking, characterized in that the vertical profile bars - with respect to their position in the profile-lattice support jacket - on their side facing the horizontal profile bars, and / or the horizontal profile bars, on their side that is oriented towards the vertical profile bars, respectively have a region of This support forms the form drag for the mechanical traverse at its crossing points and, additionally, they are connected in the region of the crossing points by mechanical union without preliminary perforation of the profile bars, that is to say, for example, riveted by stamping without drilling or riveting by stamping with perforating rivet using a semitubular rivet or stamped with piercing rivet using a solid rivet.

2. Container with pallet according to claim 1, characterized in that the profile bars of the profile-lattice support sleeve are mechanically driven at their crossing points by virtue of the horizontal profile bars grooving in grooves of accommodation of the vertical profile bars.

3. Container with pallet according to any of claims 1 or 2, characterized in that the profile bars of the profile-lattice support jacket are mechanically provided at their crossing points by virtue of the profile bars horizontals are placed in centering means stamped from the vertical profile bars.

4. Container with pallet according to any of claims 1, 2 or 3, characterized in that the upper horizontal profile bar of the profile-lattice support shirt rests on the profile bars verticals in the upper cross joints of the trellis-profile by way of shoulders or lower centering means stamped from the vertical profile bars.

5. Container with pallet according to any of claims 1 to 4, characterized in that the upper horizontal profile bar of the profile-latched support sleeve rests on the vertical profile bars in the upper junctions of the trellis-profile by via a support arm of the horizontal profile bar.

6. Container with pallet according to any of claims 1 to 5, characterized in that the vertical profile bars of the profile-lattice support sleeve abut on a support arm of the lower horizontal profile bar in the lower cross junctions of the lattice -profile.

7. Container with pallet according to any of claims 1 to 6, characterized in that the vertical profile bars of the profile-lattice support sleeve bear on the lower horizontal profile bar in the lower cross joints of the lattice-profile by way of printed shoulders.

8. Container with pallet according to any of claims 1 to 7, characterized in that the profile bars of the profile support sleeve Lattice consist of different materials and / or comprise profiles of different cross section, such as bar profile, formed profile or hollow profile.

9. Container with pallet according to any of claims 1 to 8, characterized in that the vertical and / or horizontal profile bars of the profile-lattice support jacket have a continuous profile.

10. Container with pallet according to any of claims 1 to 9, characterized in that the profile-lattice support jacket comprises separate lateral parts that are of folding or folding configuration.