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Dokumentenidentifikation EP1323646 07.08.2003
EP-Veröffentlichungsnummer 1323646
Titel Müllbehälter und Müllsammelsystem
Anmelder Wastec B.V., Veenendaal, NL
Erfinder Achterberg, Willem Jan, 3906 NB Veenendaal, NL
Vertreter derzeit kein Vertreter bestellt
Vertragsstaaten AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT, SE, SI, SK, TR
Sprache des Dokument EN
EP-Anmeldetag 31.12.2002
EP-Aktenzeichen 020806097
EP-Offenlegungsdatum 02.07.2003
Veröffentlichungstag im Patentblatt 07.08.2003
IPC-Hauptklasse B65F 1/12

Beschreibung[en]

The invention relates to a waste container, comprising a bin provided with four walls that is closed at the bottom by a base and that bears a lid at the top, which bin can be gripped between two arms of a gripper for lifting and emptying.

Waste containers of this type are known and are increasingly being used for the collection of domestic waste. At set times the waste containers are put out along the road in order to be emptied into the collection chamber of a lorry. Usually such a lorry is fitted with an unloading system by means of which the waste containers can be lifted at a pick-up ridge or recess on the front and then emptied into the collection chamber by tipping. In addition to the driver of the lorry, personnel who bring the containers to the unloading system are also needed for this purpose.

Unloading systems by means of which the driver is able to perform these operations on his own have also been known for some time. Such unloading systems have a gripper with two arms between which the container can be gripped. The gripper can then execute a lifting movement and a tilting movement for emptying the container.

Since these activities are usually carried out at a high work rate, the lifting and tilting movements proceed with relatively high accelerations and decelerations. This means that the container has to be gripped fairly firmly, such that the container cannot unintentionally be propelled out of the gripper. Moreover, the container is also gripped somewhat more firmly immediately after emptying to compensate for the loss of the internal excess pressure of the load that has been unloaded. In addition, the somewhat tapered shape of the bin plays a role. As a consequence of this the bin is easily able to slip out of the gripper.

With the known containers the problem now arises that the walls of the bin are always deformed by the gripping of the gripper. As a result cracks occur in the long term, such that the container becomes unusable.

The aim of the invention is to provide a waste container of the type mentioned in the preamble which is better able to withstand the forces that arise during gripping by the gripper and that can also be handled safely during unloading. Said aim is achieved in that the bin is provided with an attachment on which an arm is able to engage. Preferably at least two opposing walls each bear an attachment.

The attachment on the container according to the invention absorbs the forces exerted by the arm concerned and distributes these regularly over the wall. If the bin has an external collar at the top, the attachment is preferably braced underneath the collar. With this arrangement the attachment can have a strip running around the wall in the circumferential direction of the bin, as well as a support extending upwards from the strip to underneath the collar. The strip can have two parallel ridges between which the arm, such as the clamping bands thereof, can be accommodated. In this way the container can be properly held, even under relatively high accelerations and decelerations such as arise during unloading. Preferably, the strip is curved and at both ends joins onto the corners that form the transition with the adjoining walls of the bin. The attachment can run completely continuously around the container.

The attachment can also be fitted at a location other than the wall, for example at a corner between two walls.

The invention also relates to an attachment for fitting on a container as described above. Said attachment can have a strip to be fitted around the wall in the circumferential direction of the bin, as well as a support extending upwards from the strip.

The invention further comprises a waste collection system, comprising at least one waste container as described above, as well as an unloading installation having a gripper provided with at least two arms. This unloading installation is usually constructed as a lorry provided with a collection chamber for waste, as well as a gripper for lifting and, by means of tipping, emptying the waste container into the collection chamber. Each of the arms can, in a known manner, comprise a rigid support, which supports bear a flexible band on the sides thereof facing one another.

In such a system the attachment can be provided with a transponder, whilst the gripper can have sensor means for transmitting data concerning the transponder. The advantage of this embodiment is that by virtue of the gripping of the attachments by the gripper arms the sensor means are always able to assume the correct position with respect to the transponder. As a result reliable detection is possible.

The invention will be explained in more detail below with reference to an illustrative embodiment shown in the figures.

Fig. 1 shows a front view of the waste container according to the invention with an attachment on the two side walls.

Fig. 2 shows a side view of the container according to Figure 1.

Fig. 3 shows a horizontal cross-section according to III-III in Figure 2, the arms of a gripper also being shown in Figure 3.

The waste container shown in Figures 1 and 2 comprises a bin 1 provided with two side walls 2 and two cross walls 3. The bin 1 is closed at the bottom by a base 4 and at the top bears a lid 5 that can be swung into the open position shown in broken lines (see Figure 2) about the hinge 6. Close to the base 4 the waste container has two wheels 7, such that it is mobile by means of handle 8 close to the hinge 6.

The top of the bin 1 has a collar 9 extending outwards and downwards, which collar 9 is stabilised with respect to the walls 2 and 3 by means of reinforcing ribs 10, 11, respectively.

Such a waste container, loaded with, for example, domestic waste, is put out by the kerb. The container can be unloaded by means of a lorry which has a compartment in which the waste can be collected, as well as a lifting/gripper device that is known per se and is not further shown here. As is shown in the cross-section in Figure 3, this lifting/gripper device has two arms 12, which, by means of hinges 13, can be pivoted on the slide 14 that is mounted on the lorry such that it is able to move up and down.

Each arm 12 has a rigid support 15, which rigid supports 15 bear a flexible member, for example a band 16, on the faces thereof facing one another.

When gripping the waste container the arms 12 are clamped around the bin 1. Fairly substantial force is exerted during this operation, if only to prevent the container being thrown out as a result of the decelerations and accelerations that arise during lifting. It must be considered that the container is also tilted by the gripper in order to empty the contents into the compartment of the lorry, as a result of which additional accelerations and decelerations arise. Moreover, the bin 1 has a tapered shape, so that firm gripping is required for this reason as well.

As a consequence of the fairly high pinching forces that are exerted on the bin 1 by the arms 12, said bin is continually exposed to deformation. As a result cracks can ultimately occur which run in the height direction of the container, such that it becomes unusable.

In order to prevent this cracking, according to the invention the attachments 17 are fitted. In the illustrative embodiment shown these attachments 17 are fitted on the two side walls 2. Of course, they can also be fitted on the cross walls 3 or on all four walls. Each attachment comprises a strip 18 running in the circumferential direction around the wall 2 concerned, as well as a support 19 extending upwards from the strip 18. This support 19 is fitted underneath and in contact with the collar 9, specifically between the ribs 10 thereof. The strip 18 can furthermore be fixed to the wall 2 by means of screws, rivets 21 and the like.

As can clearly be seen in Figure 1, each strip 18 has two parallel rims or ridges 20, between which the gripper arms 12, in particular the bands 16 thereof, are able to engage.

By means of the attachments 17 the pinching forces of the arms 12 are transmitted to the relatively rigid corners 22 of the bin 1, as a result of which the compression of the side walls 2 is avoided and cracks no longer occur.

Furthermore, the attachment can have a specific colour that relates to a particular category of waste.


Anspruch[en]
  1. Waste container, comprising a bin (1) provided with four walls (2,3) that is closed at the bottom by a base (4) and that bears a lid (5) at the top, which bin (1) can be gripped between two arms (12) of a gripper for lifting and emptying, characterised in that the bin (1) is provided with an attachment (17) on which an arm (12) is able to engage.
  2. Container according to Claim 1, wherein the attachment (17) is fixed to the bin (1) by bolts, rivets (21) and the like.
  3. Container according to Claim 1 or 2, wherein the bin (1) has an external collar (9) at the top and the attachment (17) is braced underneath the collar (9).
  4. Container according to Claim 3, wherein the attachment (17) has a strip (18) running around the wall (2, 3) in the circumferential direction of the bin (1), as well as a support (19) extending upwards from the strip (18) to underneath the collar (9).
  5. Container according to Claim 4, wherein the strip (18) has two parallel ridges (20) between which an arm (12) can be accommodated.
  6. Container according to Claim 4 or 5, wherein the strip (18) is curved and at both ends joins onto the corners (22) that form the transition with the adjoining walls (2, 3) of the bin (1).
  7. Container according to one of the preceding claims, wherein at least two opposite walls (2, 3) each bear an attachment (17).
  8. Container according to one of the preceding claims, wherein at least one attachment is at a corner that forms the transition between two walls.
  9. Container according to one of the preceding claims, wherein at least one attachment incorporates a transponder.
  10. Attachment (17) for fitting on a container according to one of the preceding claims.
  11. Attachment according to Claim 10, wherein a strip (18) that can be fitted around the wall (2, 3) in the circumferential direction of the bin (1) is provided, as well as a support (19) extending upwards from the strip (18).
  12. Waste collection system, comprising at least one waste container according to one of the preceding claims, as well as an unloading installation having a gripper provided with at least two arms (12).
  13. System according to Claim 12, wherein the unloading installation comprises a lorry provided with a collection chamber for waste, as well as a gripper for lifting and, by means of tipping, emptying the waste container into the collection chamber.
  14. System according to Claim 13, wherein the gripper is on the side of the lorry.
  15. System according to one of Claims 12-14, wherein the arms (12) each comprise a rigid support (15), which supports (15) bear a flexible band (16) on those sides thereof facing one another.
  16. System according to one of Claims 12-15, provided with a container according to Claim 9 having at least one attachment that contains a transponder, the gripper having sensor means for transmitting data concerning the transponder.






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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