EP0086741A1 - Grid-type box pallet - Google Patents

Abstract

In grid-type box pallets having locks which can be unlocked in the vertical direction, the deficiency is that their separable side walls can no longer be lifted when the product, for example frozen meat products, is pressed tightly into the pallet because the product rests against the horizontal panels of the side walls or has become hooked into said panels. In contrast, side walls which can be swivelled about vertical swivel axles require a lot of space in front of the pallet. Additionally, their locks are arranged on the outside and are therefore prone to damage. A lock of the separable side walls (7) is now provided which allows the side walls (7) to be detached transversely from the framework of a grid-type box pallet (1). This is achieved by a special pin-bracket lock (9), (10); (11), (12), (26), (27) which allows a combined swivelling and unhooking movement in the horizontal plane or solely an unhooking movement in the horizontal plane. <IMAGE>

Description

The invention relates to a lattice box pallet consisting of four side walls joined together to form a frame assembly with vertical and horizontal bars, according to the preamble of claim 1.

Such lattice box pallets are used, among other things, for the transport and storage of unevenly shaped, for example bulky goods. In order to be able to remove the goods from the pallet box pallet in particular, at least one side wall is integrated into the frame structure in such a way that it can normally be easily removed from this structure. For this purpose, the end-side vertical beams of the separable side wall angle hooks are in a known type fixed to the outer side, which grasp from above in pocket-like sleeves, which also aussenseiti ^g of Rahmeneckpfosten located. A vertical movement is therefore required both for detaching and for hanging in the side wall.

However, it has now been shown in some practical cases that the bulky goods embedded in such a lattice box pallet are interlocked with the separable side wall in such a way that the vertical movement required to unhook the side wall cannot be carried out. This is particularly the case when pieces of meat that are still warm have first been filled into the pallet box pallet and then deep-frozen. Projections in the form of bone parts or clubs then usually protrude into the openings in the side wall and lie in the frozen one Bandage with the other pieces of meat on the horizontal bars so that it is only possible to use special aids, such as crowbars, to lift the side wall and remove it from the frame bandage for the purpose of removing the goods. In many cases, the use of such aids leads to damage, in particular to the locks, with the result that the corresponding pallet box pallet becomes unusable and has to be repaired. It therefore fails for use.

In another known type of lattice box pallet, the separable side wall is articulated on a vertical side to a frame corner post in such a way that the side wall can be integrated into the frame assembly and locked with it via a vertical pivot axis. The locks consist of S-shaped tabs fastened on the outside on a vertical spar of the side wall, and of latch tongues which are positively guided on the adjacent frame corner post and can be inserted into the slots between the outside of the vertical spar and the tabs from above.

The pivoting of the side wall about a vertical axis allows the side wall to be able to be separated from the frame assembly even when the stored goods have laid on the horizontal bars in such a way that no vertical movement is possible. This does, however, buy the disadvantage that the side wall has to be pivoted into the open position by almost 90 ° so that the interior of the pallet box pallet is accessible at all. The full length of the side wall therefore stands in the room inside. This free space is therefore absolutely necessary in order to be able to guarantee the proper operation of such lattice box pallets. However, such a room is generally not available, especially in high-bay warehouses. In addition, the side wall blocks the path along the lattice box pallets, which are usually arranged in rows next to and on top of each other.

Another disadvantage is the locking arranged on the outside of the vertical spar of the side wall and the frame corner post. As a result, they form projections which are permanently exposed to the risk of damage. Damaged locks, however, result in an unusable pallet box range. In addition, with this type of construction, no precautions are taken to ensure that the locking tongues remain properly behind the tabs when transporting a pallet box pallet. During transport, especially with forklifts on uneven floors, the locking tongues can slide out of the receptacles very easily due to vibrations, so that the frame structure is released.

The disadvantages described on the basis of the two known types of construction become particularly problematic when it comes to mesh box pallets, for example for the storage and transport of frozen meat with a unit weight of up to 50 kg and more, which is twice the standard height, that is a height of approximately 1.80 m.

The invention is based on the object of improving the lattice box pallet described in the preamble of claim 1 such that easy access is then also possible ensures ness of the interior, even in tight stack conditions properly when the einge- la ^g erte Good has dovetailed with the separable side wall.

The solution to this problem consists in the features listed in the characterizing part of claim 1.

Due to the special arrangement of the pins and the associated brackets in the longitudinal plane of the separable side wall, the user now has the possibility, in conjunction with the limited vertically displaceable lock that is effective transversely to the side wall plane, to remove the side wall to the front after releasing the lock, without doing so by the Verzahnun ^g seffekt be markedly hindered. Even in difficult operating situations, for example where deep-frozen, heavy pieces of meat lie in a compact bandage on the horizontal bars of the side wall, this can be easily removed from the frame bandage. In addition, there is the further advantage that the interlocks lie in the plane of the side wall and thus also the frame corner post and do not protrude into the interior of the lattice box pallet or beyond its outer contour. As a result, they are largely removed from the influences that, due to the harsh operating practice, can damage the locks and thus render the pallet box pallet unusable. The avoidance of a swivel mechanism, which requires the side wall to be swiveled by almost 90 ° for the accessibility of the interior, allows the free space in front of the pallet box pallet to be reduced to the necessary minimum. The side wall also no longer remains, as in the known one Case, coupled with the rest of the framework, but can be set aside. The release of the lock is not hindered by the stored goods, since these are elements closely fitting to the vertical bars or the frame corner posts.

The number of locks made up of the pins and the bracket-type holders and the locks depends on the size of the pallet box pallet or the goods stored. For example, it is conceivable that only one locking device is provided in the area of each end vertical spar of the separable side wall, which is then expediently arranged approximately in the middle height area. However, two or more such locks can also be arranged one above the other in the area of each vertical spar. Of course, other configurations are also conceivable. In addition, with the aid of such interlocks, two or even all side walls of a frame assembly joined together to form a lattice box pallet can optionally be coupled to one another and, if necessary, also decoupled again.

A particularly advantageous embodiment of the invention is characterized in that the pins as centering members project horizontally from the end faces of the vertical bars of the side wall and the brackets are designed in the form of housing brackets fixed to the corner posts of the frame with outward-directed insertion openings. This design has the advantage that the side wall is only integrated into the frame structure with a transverse movement and in the same way again this can be solved. The dimensions of the centering pins and the corresponding housing brackets are coordinated with one another in such a way that the problem-free insertion of the centering pins into the housing brackets and their removal is ensured without, however, impairing the rigidity of the frame assembly. This requirement is particularly important when transporting the lattice box pallets on uneven floors. The locks, which act transversely to the side wall level, prevent transverse movement when the side wall is incorporated.

Another embodiment with the same advantages as described above consists according to the invention in that the pins protrude horizontally as centering members from the inside of the frame corner posts and the brackets are designed in the form of housing brackets fixed to the end faces of the vertical bars with inward insertion openings . This is simply an exchange of the locking elements assigned to the frame corner posts and the side wall.

A practical embodiment of the locks is seen according to the invention in that the locks consist of traps which can be displaced along the vertical bars and interact with the housing brackets. These traps are designed in such a way that they fit snugly against the vertical bars and therefore do not form any inward or outward projections. Their interaction with the housing brackets is such that they fix the position of the side wall perfectly with centering pins inserted into the housing brackets.

In this context, it is then considered expedient for the latches to be designed like plates, each have a locking lug reaching behind the housing brackets on the frame side and with at least one sliding quiver enclosing the vertical bars in a non-positive manner. The plate-like design prevents unnecessary loss of space on the inside of the lattice box pallet and protrusions on the outside prone to damage. In addition, a plate-like trap together with the locking lug can be designed in such a way that it can, for example, push aside any material that may be located in its displacement path due to the wedge-shaped design.

For better guidance and operational safety of the traps, the invention further provides that the traps each have two spaced-apart slide quivers which comprise the vertical spars above and below the centering pins. The sliding quivers stabilize the trap and also make it easier to handle, if necessary by incorporating a handle in the plane of the side wall. In addition, the centering pins limit the displacement of the traps.

Another advantageous embodiment of a locking device, which can preferably be used together with the locking device described above, is characterized according to the invention in that the pins, as pivot pins with different lengths, protrude upwards and downwards from the vertical uprights of the separable side wall and into the frame corner posts attached brackets grip, the distance from each other is approximately the length of the vertical bars plus at least the length of the lower pivot pin.

This embodiment thus provides a possibility for the storage of the side wall, in which, to release the side wall from the frame assembly, first the lock on one vertical bar is lifted by lifting the lock, then the side wall by a small amount around the axis of the pivot pin transversely from the Pallet box pallet is folded down so that it detaches from the stored goods and that the lower pivot pin is then lifted out of its bracket by a slight vertical movement of the side wall, which means that the upper pivot pin can also slide out of its bracket as part of a downward movement of the side panel and thus the side wall is completely detachable from the frame assembly. The play required for this, in particular the upper pivot pin in the pivot bracket, is very small, since only small pivot angles are necessary in order to be able to pull the upper pivot pin out of the pivot bracket by tilting the side wall.

Another embodiment of such a lock, which has the same advantages, is that the pins protrude up and down as pivot pins with different lengths from the frame corner posts and engage in recesses adapted to the pivot pins on the head side of the vertical vertical bars of the separable side wall, whereby the vertical displacement of the side wall is approximately equal to the length of a vertical spar plus the length of the lower pivot pin. This embodiment also consists only in an exchange of the swivel elements assigned to the side wall or the frame corner posts.

If the pivot pins are on the vertical bars of the side wall, a further feature of the invention provides that the pivot pins are welded on the head side of the hollow vertical bars.

Another feature in this context is characterized in that the swivel brackets consist of angle pieces or U pieces welded to the inside of the frame corner posts. The U-pieces are used in particular when there are two separable side walls arranged one above the other in a very high lattice box pallet of 1.80 m, for example, so that in the middle height range only one swivel bracket for the upper swivel pin of the lower side wall and the lower one Pivot pin of the upper side wall is necessary.

The horizontal and vertical bars of the side walls and the frame corner posts can be formed from angular, round or angled profiles. In particular, square, rectangular or round hollow profiles are used. The material for the bars, the frame corner posts and the locking mechanisms is steel, stainless steel, aluminum or an aluminum alloy or plastic.

• Figur 1 eine Frontalansicht auf eine Gitterboxpalette mit zwei übereinander angeordneten trennbaren Seitenwänden;
• Figur 2 in vergrösserter Darstellung den Ausschnitt II der Figur 1;
• Figur 3 einen Vertikalschnitt durch die Darstellung der Figur 2 entlang der Linie III-III;
• Figur 4 einen Horizontalschnitt durch die Darstellung der Figur 2 entlang der Linie IV-IV;
• Figur 5 in vergrösserter Darstellung die Ausschnitte V₁ und V₂ der Figur 1 in lagegerechter Zuordnung und
• Figur 6 einen Horizontalschnitt durch die Figur 5 entlang der Linie VI-VI.

The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawings. Show it:

• Figure 1 is a front view of a lattice box pallet with two separable side walls arranged one above the other;
• Figure 2 shows an enlarged view of section II of Figure 1;
• 3 shows a vertical section through the representation of Figure 2 along the line III-III;
• Figure 4 is a horizontal section through the representation of Figure 2 along the line IV-IV;
• 5 shows an enlarged representation of the sections V ₁ and V ₂ of FIG. 1 in the correct position and
• 6 shows a horizontal section through FIG. 5 along the line VI-VI.

The lattice box pallet 1 with double standard height (approximately 1.80 m), illustrated only in the front view in FIG. 1, has a rectangular plan. The pallet floor 2 is spaced from the ground by four corner feet 3 in such a way that mechanized industrial trucks with loading forks can reach under the pallet floor 2. Also in the corner areas, four frame corner posts 4, 4 'are welded on the upper side of the pallet base 2 from hollow profiles which are square in cross section. It can be seen that the frame corner posts 4, 4 'are arranged somewhat protruding, so that the outer contour of the frame corner posts 4, 4' also determines the outer contour of the entire lattice box pallet 1. On the head side, the four frame corner posts 4, 4 'are fixed to one another by horizontal struts 5. The horizontal struts 5 also consist of hollow profiles with an external cross-section. On the horizontal struts 5 are in the Corner areas welded corners 6, on which no further lattice box pallet 1 can be stacked.

Three of the four side walls of the lattice box pallet 1 consist of vertical bars, not shown, of hollow sections with a square cross section, which are welded between the upper horizontal struts 5 and lower horizontal struts 5 'at a lateral distance from one another (see FIGS. 4 and 6). Additional horizontal cross struts, not shown, can be retracted as stiffeners in the middle height range.

The front of the lattice box pallet 1 which can be seen from the illustration in FIG. 1 consists of two identically designed side walls 7 which are arranged one above the other and which can be detached from the frame assembly. For this purpose (see also FIGS. 5 and 6) there are, for example, the one on the right in the drawing plane Vertical spar 8 of the side walls 7 up and down pivot pins 9, 10, which engage in pivot brackets 11, 12, which are welded to the inside 13 of the frame corner post 4. The lower pivot bracket 11 consists of an angle iron with a horizontal leg 14 and a vertical leg 15. A bore 16 for the pivot pin 10 is made in the horizontal leg 14. The middle pivot bracket 12 consists of a U-iron with two horizontal legs 17 and a vertical leg 18. In the two horizontal legs 17, the holes 19 are made for the upper pivot pin 9 of the lower side wall 7 and the lower pivot pin 10 of the upper side wall 7 . The clear distance between the horizontal leg 14 of the lower pivot bracket 11 and the lower horizontal leg 17 of the middle pivot bracket 12 corresponds approximately to the length of the vertical spar 8 plus a little more than the length of the lower pivot pin 10. In this way it is possible to guide the side wall 7 in the middle of the upper pivot pin 9 Lift pivot bracket 12 so that the lower pivot pin 10 can slide out of the lower pivot bracket 11. Then the side wall 7 is pulled slightly forward with its lower horizontal bar 20 and then the upper pivot pin 9 is also pulled out of the middle pivot bracket 12.

In the same way, the upper side wall 7 can be detached from the frame structure of the lattice box pallet 1.

The two pivot pins 9, 10 form part of insert pieces 21 which are welded into the end faces of the hollow vertical bars 8 of the side walls 7.

At this point it should also be added that each side wall 7 is composed of a lower horizontal spar 20, an upper horizontal spar 22, two end vertical spars 8, 23 and the two horizontal spars 20, 22 connecting inner vertical spars 24. All spars 20, 22 to 24 consist of hollow profiles 7 with a square cross section.

When viewing FIGS. 1 to 4 together, it can be seen that centering pins 26 are welded onto the end faces 25 of the vertical bars 23 of the side walls 7 approximately in the middle height range. The centering pin 26, in the case of side walls 7 incorporated into the frame assembly, have housing brackets 27 which are approximately U-shaped in cross section and which are welded to the inner sides 28 of the frame corner post 4 '. The edges 29 (see FIG. 3) which delimit the insertion openings 37 of the housing brackets 27 at the top and bottom are arranged in a slightly divergent manner in order to facilitate the insertion of the centering pins 26 into the housing brackets 26. The play between the centering pin 26 and the housing brackets 27 is dimensioned such that the side walls 7 have a narrowly limited possibility of movement in their longitudinal plane.

Furthermore, FIGS. 1 to 4 show that the vertical bars 23 of the side walls 7 are each gripped by two sliding quivers 30, 31 arranged one above the other at a vertical distance. The sliding quivers 30, 31 are connected to one another on the interior side by plate-like traps 32. The traps 32 nestle closely against the inner sides 33 of the vertical bars 23. They have locking lugs 34 with inclined surfaces 35 which, when centering pins 26 are inserted into the housing brackets 27, grip behind the housing brackets 27 and thus prevent undesired opening of the side walls 7. To make the latches 32 easier to operate, the two sliding quivers 30, 31 are connected to one another by U-shaped handles 36.

In the illustration of FIG. 1, only one centering pin 26 is illustrated in the approximately middle height range on the vertical bars 23 of the side walls 7, which are on the left in the image plane. However, such locks 26, 27 can also be provided at the upper and lower ends of the vertical bars 23 Locks 32 are provided. Furthermore, it is conceivable to provide only such locks 26, 27, 32 on the vertical bars 8, 23 instead of the combination of the locks 26, 27, 32 with the pivot pins 9, 10.

If, for example, two interlocks 26, 27, 32 are assigned to a side wall 7 at a distance from one another, the latches 32 of both interlocks 26, 27, 32 can optionally be connected to one another by a rod, which then replaces the handles 36.

Claims (10)

1. Pallet box pallet consisting of four side walls joined together to form a frame assembly with vertical and horizontal bars, at least one side wall of which can be released from the frame assembly by removing a lock,
characterized,
that the locking of at least one pin (9, 10; 26) provided in the area of each end vertical spar (8, 23) of the separable side wall (7) and extending in the plane of the side wall (7), also in the plane of the side wall (7) lying console-like holder (11, 12; 27) for inserting and storing the pin (9, 10; 26) and consisting of at least one limited vertically displaceable lock (32) effective transversely to the side wall plane. 2. Pallet box pallet according to claim 1, characterized in that the pins (26) as centering ^{g members project} horizontally from the end faces (25) of the vertical bars (23) of the side wall (7) and the holders in the form of on the inner sides (28) the frame corner posts (4 ') fixed housing brackets (27) are formed with outward insertion openings (37). 3. Lattice box pallet according to claim 1, characterized in that the pins (26) as centering members project horizontally from the inner sides (28) of the frame corner posts (4 ') and the holders in the form of on the end faces (25) of the vertical bars (23) Housing consoles (27) are formed with inward insertion openings (37). 4. Lattice box pallet according to claim 1 and 2 or 1 and 3, characterized in that the locks consist of traps (32) which can be displaced along the vertical bars (23) and cooperate with the housing brackets (27). 5. Lattice box pallet according to claim 4, characterized in that the latches (32) are designed plate-like, each have a locking lug (34) which engages behind the housing brackets (27) on the frame side and the vertical bars (23) with at least one sliding quiver (30, 31). include slidingly. 6. Lattice box pallet according to claim 5, characterized in that the traps (32) each have two spaced apart, above and below the centering pin (26) the vertical bars (23) comprising sliding quiver (30, 31). 7. lattice box pallet according to claim 1, characterized in that the pins (9, 10) project as pivot pins with different lengths from the end vertical bars (8) of the separable side wall (7) up and down and attached to the frame corner post (4) Grab consoles (11, 12), the distance between which is approximately the length of the vertical bars (8) plus at least the length of the lower pivot pin (10). 8. lattice box pallet according to claim 1, characterized in that the pins (9, 10) project as pivot pins with different lengths from the frame corner posts (4) up and down and in the pivot pins (9, 10) adapted recesses on the head side of the vertical spars at the ends (8) of the separable side wall (7), the vertical displacement path of the side wall (7) being approximately equal to the length of a vertical bar (8) plus the length of the lower pivot pin (10). 9. Gitterboxpalette according to claim 7, characterized ekennzeich- net, that the pivot pins (9, 10) of the hollow vertical bars (8) are welded at the head end ^g. 10. Lattice box pallet according to claim 7, characterized in that the swivel brackets consist of angle pieces (11) or U-pieces (12) welded onto the inner sides (13) of the frame corner posts (4).

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