EP1481918B1 - Pallet container - Google Patents

Abstract

A pallet for carrying liquid containers has a metal basket (3) supported on the pallet via a conducting base plate (2) and is earthed via metal clip (10) fastened to the side of the pallet. The metal clip is C-shaped with the upper flange secured to the pallet via suitable fasteners and with the lower flange secured under a support block (15). This ensures that the basket is safely earthed without fire risk via static discharge.

Description

The innovation relates to a pallet container for the transport and storage of liquids, in which a plastic container is arranged on a pallet in a metal mesh basket and the mesh basket is grounded via the pallet.

The known pallet container of this type have a mesh basket with a scholastic base made of sheet metal, which is mounted on a steel frame forming a base. About the steel pallet is a derivation of any resulting electrostatic charges in the ground, in the case of stacked pallet container in the mesh basket of the next lower pallet container

From the EP 1 357 052 , which falls under Art. 54 (3) EPC, a pallet container is known. The well-known pallet container has as main components an inner container made of plastic with four side walls, a lower designed as a drain bottom and an upper floor with a closable by a screw filler neck and a lower outlet nozzle with a removal fitting, an outer sheath of metal bars, one on the outer sheath fixed protective metal cover with a central access opening to the filler neck of the inner container and a pallet-like base for supporting the plastic inner container on.

From the DE 201 07 962 U Another pallet container for transporting and / or storing a powdered or liquid medium is known. The well-known pallet container has a largely dimensionally stable, open at the top and bottom pallet-like outer container for a voltage applied to its inner surface, if necessary by a connectable to the outer container cover element, wherein at least the inner container has a plastic wall and made of plastic parts of the pallet container on your Outer surface have at least one electrically conductive layer and are electrically conductively connected to each other.

The invention has for its object to provide a further pallet container of the type mentioned.

In the pallet container according to the invention, the pallet is made of a non-conductive material and on the pallet is an earth connection electrically conductive connection to a provided on the underside of the pallet contact with the ground contact and an effective in stacking the pallet container contact for touching the underlying grate basket set up.

This opens up the possibility, previously unseen, of also producing pallet containers with wooden or plastic pallets in a form secured against sparking as a result of electrostatic charges.

According to the invention, the conductive connection in the form of a common conductor strip for the two contacts, guided along the outside of the pallet along.

Although this type of connection appears in some ways more cumbersome than the, also possible, connection of the mesh basket to the ground by a guided directly through the pallet and possibly with its end forming the contact pin, a wire, etc. It is more advantageous in different relationships. In particular, it is largely visible and controllable on its operability, especially in the case of stacking the pallet container.

It is also in case of improper handling of the pallet container, such as elastic or permanent bending of the mesh basket by impact, little risk of demolition, at least in the preferred embodiment that it is clamped at the top of the pallet immediately under the mesh basket, so that the mesh basket slip on her can, without losing contact. If necessary, the clamping can be restored simply by driving a flat metal piece, such as a small coin.

A particularly advantageous embodiment of the conductor strip consists in a pre-bent, in the whole U-shaped sheet metal part.

The sheet metal part is robust and easy to assemble.

In principle, the conductor strip could also consist of a conductive plastic or an order of conductive material. In this case, it should be provided at its bearing surface on the ground with a support made of an abrasion-resistant conductive material, preferably metal.

A particularly advantageous embodiment of the invention is to apply them to a pallet container, according to another invention, the mesh basket itself has no bottom and made the surface of the pallet at least lattice-like conductive, such as by applying a conductive lacquer or providing a conductive coating, and is conductively connected to the device for conductive connection.

The conductive connection is particularly useful in combination with the application or coating of the pallet. The conductor strip o.a. can simply be placed on top of the pallet on the job or covering and clamped on this in the manner already mentioned under the mesh basket.

The most complete combination of the means for conducting connection with the application or coating is to form this device as a continuation of the order or coating. In particular, it could then be pulled down over a greater width than just in the form of a strip and / or in the form of many strips on the side or on several sides of the pallet.

As a rule, the two contacts are set up at least twice at different points of the pallet, for example close corners of the pallet in each case, in order to ensure the ground contact or the contact of the grid basket underneath.

In the same sense is proposed as a further embodiment, at least one of the two contacts form resilient.

With appropriate formation of the underside of the pallet and the top of the mesh basket could possibly be the same contact with the ground contact and the contact to the touch of the underlying mesh basket.

Fig. 1

zeigt eine Holzpalette und einen Gitterkorb eines Palettenbehälters in auseinandergezogener isometrischer Darstellung,

Fig. 2

zeigt einen Ausschnitt aus dem zusammengesetzten Behälter in isometrischer Darstellung entsprechend Fig. 1,

Fig. 3

zeigt einen Schnitt durch die Holzpalette mit einer ersten Abwandlung,

Fig. 4

zeigt einen Schnitt durch die Holzpalette mit einer zweiten Abwandlung,

Fig. 5

zeigt die Holzpalette in isometrischer Darstellung mit einer dritten Abwandlung,

Fig. 6

zeigt die Holzpalette in isometrischer Darstellung mit einer vierten Abwandlung.

The drawings represent embodiments of the invention.

Fig. 1

shows a wooden pallet and a mesh basket of a pallet container in an exploded isometric view,

Fig. 2

shows a section of the composite container in isometric view accordingly Fig. 1 .

Fig. 3

shows a section through the wooden pallet with a first modification,

Fig. 4

shows a section through the wooden pallet with a second modification,

Fig. 5

shows the wooden pallet in isometric view with a third modification,

Fig. 6

shows the wooden pallet in isometric view with a fourth modification.

A wooden pallet 1 in the execution of a runner pallet is provided with a covering 2.

The pad 2 in the example consists of a plastic rendered conductive by incorporation of carbon black, e.g. Polyethylene or polypropylene. It has the shape of an approximately 2 mm thick plate of two connected by webs thin films.

A seated on the pad 2 mesh basket 3 consists in a conventional manner of angled and, with the exception of the lowest, self-contained horizontal bars 4, vertical bars 5, each of a steel profile, and horizontal wire rods 6, with respect to the recording electrical charges from the wall of the plastic container to be introduced into the mesh basket to reduce the interstices between grids.

The lowermost horizontal lattice bar 7 consisting of a box profile sits on the lining 2, with which it terminates flush on the outside ( Fig. 2 ), and is bolted through the pad 2 through with the wooden pallet 1. The screw holes can be seen at 8.

A pre-bent from a metal strip 9 grounding part 10 has a horizontal upper leg 11, a vertical leg 12 and a cranked lower leg 13.

In the assembled state, the upper leg 11 is located on the pad 2; he presses it. Near its end, the leg 11 is nailed using a nail hole 14 and through the pad 2 on the wooden pallet 1.

The vertical leg 12 is located on the outside of a block 15 of the wood pallet.

The lower leg 13 is located before the crank at the bottom of the pad 15 and behind the crank at the bottom of a set back on the block 15 and corresponding other blocks skid bar 16 at. Here he is nailed using a nail hole 17.

When placing the trellis basket 3 on the wooden pallet 1 and the covering 2, the upper leg 1 between the lowest horizontal grid bar 7 and the pad 2 has been clamped. He has electrical contact with both the mesh basket 3 and with the conductive coating 2. Moreover, the coating 2 is connected by its contact with the grid bar 7 with this conductive.

The floor-standing pallet container is grounded by the seating of the nailing end portion of the leg 13 on the ground forming a contact 18 for ground contact.

An optionally set to the pallet container same pallet container is centered by the recessed skids 16 with the block 15 and the other blocks on the top horizontal grid bar 19. This is thereby touched by the front of the crank lying, a contact 20 for contacting an underlying grating basket forming portion of the leg 13, so that the patch pallet container is grounded on the way to the underlying, etc ..

Instead of a wooden pallet, e.g. also a plastic pallet into consideration.

In Fig. 3 is the grounding member 10 by a, also consisting of a sheet metal strip, slightly differently designed and attached grounding part 21 replaced.

The grounding member 21 is screwed at 22 and 23, but under rest of its lower leg 24 exclusively on the skid bar 16, i. from the end. The lower leg 24 is formed with a bulge 25. This forms a contact 26 for ground contact and also a centering for stacking. The section of the leg 24 located to the right of the bulge in the drawing serves as a contact 27 for contacting a grid basket located thereunder.

The screw 22 is located at this section, the end portion 28 on the other side of the bulge 25 is unpaved. The bulge 25 with the contact 26 can therefore be pressed slightly resiliently with displacement of the end portion 28.

In Fig. 4 extends as a grounding part of a bolt 29 from the bottom horizontal bar 7 through the various layers of the wooden pallet 1 through to the bottom and ends there with a flat head 30. The head 30 is with its bottom, the contact 31 for ground contact and can laterally at its periphery, serve as a contact 32 for contacting an underlying grate basket.

In Fig. 5 the wooden pallet 1 is covered with a wire mesh 33. The wire mesh covers as a conductive coating the surface of the wooden pallet and pulls down the sides and then a few inches on the bottom. Here are the power wires 34 under the blocks 15 and skids 16 directly the two contacts or, as on the sides, the conductive connection from the surface to separately furnished, contacts.

Instead of a wire mesh is also a plastic mesh with incorporated into the net threads wires into consideration.

In Fig. 6 the wooden pallet 1 is glued lattice-shaped with plastic strips 35, in which a wire 36 is inserted. The plastic strips 36 are folded on the pallet edge on the blocks 15 and then once again on the underside of the pallet, where they end at contact pieces for the two contacts for touching the ground or touching a grid basket located underneath. With these, the wire 36 is connected.

Claims (9)

1. Pallet container for transporting and storing liquids, in which a plastic container is arranged on a pallet (1) in a metal wire mesh casing (3), and the wire mesh casing (3) is earthed (9, 18; 21; 29; 34; 36) via the pallet (1), wherein the pallet (1) is composed of a non-conductive material, and, on the pallet (1), there is an electrically conductive connection (9; 21; 29; 34; 36), which serves for earthing purposes, to a contact (18), which is provided on the lower side of the pallet (1), for making contact with the ground, and to a contact (20), which is effective when the pallet container is stacked, for making contact with the wire mesh casing (3) located beneath it, and wherein the conductive connection, in the form of a common conductor strip (9; 21; 29; 34; 36) for the two contacts (18; 20), is guided along the outside of the pallet.
2. Pallet container according to Claim 1., characterized in that the conductor strip (9), preferably including the contacts (18; 20), is composed of a pre-bent, entirely U-shaped sheet-metal part (10; 21).
3. Pallet container according to either of Claims 1 and 2, characterized in that the conductive connection (9; 21; 34; 36) on the upper side of the pallet (1) is clamped directly below the wire mesh casing (3).
4. Pallet container according to one of Claims 1 to 3, characterized in that at least one of the two contacts (18; 20) is of resilient design.
5. Pallet container according to one of Claims 1, 3 or 4, characterized in that the conductive connection is composed of a conductive plastic or a layer of conductive material.
6. Pallet container according to Claim 5, characterized in that the conductive connection on the surface resting on the floor is provided with a covering made of an abrasion-resistant, conductive material, preferably metal, in order to form the contact there.
7. Pallet container according to one of Claims 1 to 6, characterized in that the contacts (18; 20) are arranged in the vicinity of a corner of the pallet (1), preferably in multiples at different corners.
8. Pallet container according to one of Claims 1 to 7, characterized in that the wire mesh casing (3) itself does not have a base, and the surface of the pallet (1) is made conductive, at least in wire-mesh form, and is preferably provided with a conductive layer or with a conductive coating (2; 33; 35), and is conductively connected to the conductive connection (9; 21; 29; 34; 36).
9. Pallet container according to Claim 8, characterized in that the conductive connection (34; 36) is formed as a continuation of the layer or coating (33; 35) .

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