DE9408722U1 - Palletable L-ring barrel - Google Patents

Description

PALLETIZING BEARING L-RING BARREL

The present invention relates to a large-volume, closed L-ring bung barrel made of thermoplastic material for storing and transporting particularly dangerous liquids, with a vertically circumferential barrel wall, with a flat barrel top and at least one bunghole nozzle arranged therein with a bunghole opening that can be closed in a gas- and liquid-tight manner, with a flat barrel bottom and with a circumferential carrying and transport ring (L-ring) arranged in the area of the upper barrel wall for attaching the gripper claws of a barrel gripper tool.

Such essentially cylindrical barrels are known. To simplify storage and transport, such barrels are usually placed in groups on pallets so that several barrels can be picked up, transported and loaded simultaneously with a forklift. It is also possible to stack several pallets on top of each other.

For industrial purposes, standardized pallet dimensions are usually used, which are adapted to the given means of transport such as trucks, containers, etc. The dimensions 1100 x 1200 mm and 800 x 1200 mm have become particularly popular.

..2

Figure 4 shows standard steel lid drums arranged on a pallet 1100 x 1200 mm. It can be seen that it is possible to arrange three drums on the pallet without the drums protruding beyond the pallet boundary. This corresponds to a utilization of the pallet space (and, given the height of the drums, of the space) of approx. 61%.

When using a pallet 800 x 1200 mm (also shown), which has been increasingly used recently, only two barrels can be accommodated, which corresponds to a utilization of approx. 56%.

The figures for the conventional cylindrical L-ring drums made of thermoplastic shown in Figure do not differ significantly from this, but are even slightly lower due to the smaller diameter of these drums.

This use of space is particularly unsatisfactory when the contents transported in the barrels are relatively light and the loading capacity of the means of transport cannot be fully utilized due to poor utilization. This is particularly true for the transport of empty barrels. Such containers also entail high storage costs, since a large proportion of "air" is stored.

The object of the present invention is to create an L-ring drum of the type mentioned at the beginning, with which a better utilization of the footprint of a pallet, in particular a pallet 1200 x 800 mm, is achieved.

To solve this problem, it is proposed to design the barrel wall in such a way that at least in its middle area it has a cross-section that deviates from the rotationally symmetrical cylindrical shape,

where the respective
are curved to the same extent in pairs and the first pair of wall regions has a smaller curvature (ie a larger radius), i.e. is flatter, than the second pair of wall regions.

Advantageous embodiments of the invention are the subject of the subclaims.

It is particularly advantageous to design the first pair of wall regions uncurved and the second pair of wall regions essentially semi-circular or partially circular.

The barrel wall can also have, at least in its central region, a substantially rectangular cross-section with longer and shorter flat side walls that are slightly curved outwards, with the corner regions between a longer and an adjacent shorter side wall each being rounded.

If the ratio of longer to shorter barrel diameter or the length/width ratio of the side walls is between 1:1 and 2:1, a preferred embodiment is given.

It is particularly advantageous if the diameter ratio or length/width ratio for a rectangular barrel body is approximately 1.5:1.

The top of the barrel can be circular and the bottom of the barrel can be rectangular with rounded corner areas.

It is also possible to make the top of the barrel oval and the bottom rectangular with rounded corners.

Finally, it is particularly advantageous if the bottom of the barrel has a slope and if a support bar is arranged in the direction of the slope on the underside of the bottom to compensate for this slope and stabilize the bottom.

Preferred embodiments of the invention are explained below with reference to the drawing, which shows the following:

Figure 1 shows the broad side (Figure la), the long side (Figure lb) and the top side (Figure lc) of a first embodiment of the L-ring barrel according to the invention;

Figure 2 shows the broad side (Figure 2a), the long side (Figure 2b) and the top side (Figure 2c) of a second embodiment of the L-ring barrel according to the invention;

Figure 3 shows the broad side (Figure 3b), the long side (Figure 3a) and the top side (Figure 3c) of a third embodiment of the L-ring barrel according to the invention;

Figure 4 shows the utilization of the storage space for a known steel lid drum for two common pallet sizes;

Figure 5 shows the footprint utilization of a known L-ring drum for two common pallet sizes; and

Figure 6 shows the footprint utilization of the inventive L-ring barrel from Figure 1 for a pallet 800 x 1200 mm.

In Figure 1, an L-ring barrel 10 is shown. Such a barrel 10 is made of thermoplastic material and is manufactured by blow molding. Its barrel body consists of a vertically circumferential barrel wall ²⁰ , a barrel bottom 50 and a barrel top 30. In the barrel top 30, one or more bunghole nozzles 40 with a bunghole opening that can be closed in a gas- and liquid-tight manner are provided, through which the barrel 10 is filled and emptied.

In the area of the upper barrel wall, i.e. in the transition area between the barrel wall 20 and the barrel top 30, a circumferential carrying and transport ring 60, a so-called L-ring, is arranged for attaching the gripper claws of a barrel gripper tool.

The barrel wall 20 has a shape that differs from the cylindrical shape that is usual for L-ring barrels. The opposing wall regions 24 and 26 are slightly curved, with the curvature of the wall regions 24 being less than the curvature of the wall regions 26. In other words, the radius of curvature of the wall regions 24 is greater than the radius of curvature of the wall regions 26.

The wall areas 24 are also approximately 1.5 times wider than the wall areas 26. The transition between the wall areas 24 and 26 is not square, but rounded. Overall, this results in a barrel 10 with an essentially rectangular cross-section, with the corners rounded and the sides slightly curved outwards.

The barrel top 30 and the barrel bottom 50 are designed to correspond to the barrel wall 20, but can be slightly smaller so that the barrel 10 tapers slightly conically upwards (towards the barrel top 30) and downwards (towards the barrel bottom 50).

It can be seen in Figure 1 that the container has an inclined base 42, i.e. a base 42 with a slope, which causes the filled material to run into a corner and thus to be more easily emptied.

To ensure that the barrel 10 remains stable, a support bar 44 is formed on the underside of the barrel base 42, which is perpendicular to the barrel base 42 and compensates for the slope of the barrel base. In addition, the support bar 44 also contributes to stabilizing the barrel base 42, which extends in the direction of the slope.

The advantage of this design can be seen best in Figure 6. There, four L-ring barrels 10 according to the invention are arranged on a pallet with dimensions of 800 x 1200 mm. Since the ratio of the length and width of the side walls, or in other words the ratio of the long to the short barrel diameter, is adapted to the aspect ratio of the pallet, i.e. is approximately 1.5:1, there is a greatly improved utilization of the pallet's footprint. The footprint utilization is approximately 87% compared to approximately 55% for the conventional barrels shown in Figures 4 and 5 and already described above, i.e. an improvement of almost 60%!

Another advantage worth mentioning is that the barrels standing on the pallet also extend into the edges and corners of the pallet, which improves the stackability when stacking pallets and prevents tipping.

The barrels 10 can, when placed at an angle, be rolled over an edge quite easily like a cylindrical barrel, but have the advantage over the latter that they cannot roll away when placed horizontally.

Figure 2 shows a further embodiment of the present invention. Identical parts have the same reference numerals.

Instead of the slightly outwardly curved wall areas 24 and 26 of the embodiment from Figure 1, this barrel 10 has a first pair of wall areas 28 which are uncurved, i.e. flat or level, and a second pair of wall areas 32 which are semi-circular or partially circular. In cross-section, this results in an oval L-ring barrel 10. Here too, the barrel top 30 and the barrel bottom 50 are designed to match the shape of the barrel wall 20.

However, it is also possible to design the barrel top 30 as shown in Figure 3. Although the barrel wall 20 is oval in its middle area, the barrel top, which is designated here with the reference number 36, is circular. The barrel wall 20 must then taper accordingly in the transition from its middle area to the barrel top 36, as shown in Figure 3b.

It is also possible to make the middle area rectangular and to create a corresponding conical transition to an oval or round barrel top.

BezTKTSziffemliste .*:*:: i* "

2 0 Barrel wall

22 middle area {of the barrel wall) 24 opposite wall areas 26 opposite wall areas 28 first pair of wall areas

3 0 Barrel top

32 second pair of wall areas 36 barrel top

38 Barrel top

40 bunghole sockets

42 Barrel bottom

44 Stand bar

50 Barrel bottom

60 Carrying and transport ring

Claims (8)

♦ · Mauser-Werke GmbH Protection claims 1.) Large-volume closed L-ring bung drum (10) made of thermoplastic material for the storage and transport of particularly dangerous liquids - with a vertically circumferential barrel wall (20), - with a flat barrel top (30) and at least one bunghole socket (40) arranged therein with a bunghole opening that can be closed in a gas- and liquid-tight manner, - with a flat barrel base (50), and - with a circumferential carrying and transport ring (60) arranged in the area of the upper barrel wall for attaching the gripper claws of a barrel gripper tool, characterized in that the barrel wall has, at least in its central region (22), a cross-section deviating from the rotationally symmetrical cylindrical shape, the respective opposite wall regions (24; 26) being curved to the same extent in pairs and the first pair of wall regions (24) having a smaller curvature (ie a larger radius), i.e. being more flattened ^, than the second pair of wall regions (26). 2.) Bung drum according to claim 1, characterized in that the first pair of wall regions (28) is uncurved and the second pair of wall regions (32) is substantially semi-circular or partially circular. 3.) Bung drum according to claim 1, characterized in that the barrel wall (20) has, at least in its central region (22), a substantially rectangular cross-section with slightly curved outwards and has shorter, flat side walls, with the corner areas between a longer and an adjacent shorter side wall each being rounded. 4.) Bung drum according to one of claims 1 to 3, characterized in that the ratio of longer to shorter drum diameter or the length/width ratio of the side walls is between 1:1 and 2:1. 5.) Bung drum according to claim 4, characterized in that the diameter ratio or length/width ratio for a rectangular barrel body is preferably approximately 1.5:1. 6.) Bung drum according to one of claims 1 to 5, characterized in that the upper barrel bottom (3 6) is circular and the lower barrel bottom is rectangular with rounded corner areas. 7.) Bung drum according to one of claims 1 to 5, characterized in that the upper barrel bottom (3 8) is oval and the lower barrel bottom is rectangular with rounded corner areas. 8.) A bung barrel according to one of claims 1 to ₁₁ , characterized in that the barrel bottom (42) has a gradient and that a support strip (44) is arranged in the direction of the gradient on the underside of the barrel bottom (42) to compensate for this gradient and to stabilize the barrel bottom (42).