EP1619143B1 - Method and device for securing the operating range of an emptying device - Google Patents

Abstract

The securing process secures the working region of an emptying device (10) for emptying dustbins (8) into a collecting container. The emptying device includes a lifting carriage for the dustbin. A barrier device is fitted between the collecting container and the lifting carriage, which can be moved in a movement region (S) between a rest position and a securing position.

Description

The invention relates to a device for securing the working area of emptying devices for emptying refuse containers in a collecting container, in particular emptying devices with laterally arranged barriers, wherein the emptying device has a lift truck. The invention also relates to a method for securing emptying devices and to an emptying device.

The truck serves to hold and fix the garbage container to be emptied and can be designed in different ways. Usually, such a lift truck has a so-called receiving comb for suspending the refuse container and abutment elements for supporting the container wall. The truck is usually via at least one swivel arm with a drive device, for. B. a pivoting drive device, which causes the tipping of the refuse container into the pouring opening of the collecting container. The drive device may also include a lifting device with which the lift truck is first raised and then pivoted first.

Such Hubkipp- or tilting devices are from the DE 34 05 997 C2 known. In order to protect the work area in the vicinity of the lifting and tilting device, laterally arranged barriers or barriers are provided, the blocking on leaving the securing position on the control circuit of the tilting or Tilting device act and z. B. cause a stop the emptying, so that during the automatic draining operation no danger from the emptying device for the operating personnel or uninvolved persons is caused.

An advancement is in the DE 44 30 833 C1 described, which is based on the task also to secure the feeder area. As a feeder area of the part of the working area is considered before the emptying device, which is provided for the removal and transport of the refuse containers by the garbage workers. For this purpose, at least one light barrier is arranged at the free end of the barriers, wherein the transmitter is attached to one barrier and the receiver opposite to the other barrier and the light barrier is connected to a control device which is used to activate the light barrier during a period of the emptying process and Preventing or interrupting the emptying process is formed when the light barrier is interrupted.

A similar monitoring device is from the EP 0 928 756 A1 known. On lateral barriers is omitted in this device and the hedge of the work area is z. B. performed by means of a sonar device, which is arranged on the emptying device. Here, a two- or three-dimensional area is scanned, whereby both the lateral and the feeder area is detected.

The penetration into the range of movement of the emptying device from the feeder side during the emptying process, however, is not prevented because, unlike the lateral barriers, the intruder does not encounter a mechanical obstacle in the way. In particular, when a person inadvertently runs quickly into the work area of the emptying device, the subject to injury depending on the current position of the lift truck.

It is therefore an object of the invention to provide a method and a device for securing the working area of emptying devices, with which the range of movement of the emptying device can be secured from the feeder side so that intrusion of persons during the emptying process is prevented and at the same time and removal of the refuse containers is not hindered.

This object is achieved with a device which is characterized in that between the collecting container and the truck from a rest position in a securing position and vice versa movable barrier device is arranged, which extends in the securing position below the lift truck in the range of motion of the lift truck.

In the rest position, the barrier device is behind the pallet truck, so that the pallet truck is accessible from the front and the refuse containers can be removed and transported. A hedge of the work area is required only when the truck is equipped with the waste container to be emptied and this is to be emptied. As soon as the pallet truck has moved out of its receiving position and has released the barrier device located behind the pallet truck, it is moved from its rest position into the securing position under the pallet truck. By means of the barrier device, the movement area below the lift truck, in particular from the feeder area, is mechanically sealed off, so that persons who run into this area are effectively retained.

The barrier device is in securing position preferably in a height of 80 to 120 cm.

If a person should run against the barrier device, then in a particular embodiment of the invention at the same time the emptying process is stopped, in particular stopped the truck in its respective position.

To realize this, according to a preferred embodiment, the barrier device is connected to a control device which is formed during a period of time (monitoring phase) of the emptying of the emptying device to interrupt the emptying process when leaving the securing position of the barrier device.

The barrier device preferably has a sensor device which is connected to the control device and which detects the position of the barrier device. This sensor device determines whether the barrier device is moved during the monitoring phase from its securing position, z. B. in that a person is supported on the barrier device.

The sensor device can also serve to detect its position during extension and retraction of the barrier device in order to switch the monitoring phase on and off.

Depending on the design of the barrier device, the sensor device may preferably comprise an inductive switch or a rotary encoder.

The control device is preferably the control device of the emptying device.

The barrier device is preferably arranged on a movable fastening element of the emptying device or on a stationary fastening element of the emptying device or of the collecting container.

The movable fastening element of the emptying device may be, for example, the pivoting arm of the lifting carriage or the pivoting shaft. As a stationary fastener is the rear wall of the bulkhead housing in question, which is part of the emptying device, or a wall of the collecting container.

In order to move the barrier device from its rest position into the securing position and possibly also back, a drive device is provided. Preferred is a spring device which is supported on the fastening element, wherein the spring device may preferably comprise at least one gas spring.

According to another embodiment, the drive device may also be at least one pressure medium motor supported on the fastening element.

The spring device is preferably designed so that it presses the barrier device in the securing position. This means that the movement of the barrier device must take place from the securing position to the rest position against the spring force. This is preferably done by the emptying device. When the lift truck is moved back to its original position, this presses against the barrier device and pushes them back to their rest position. For this purpose, the barrier device is preferably designed such that it is movable by means of the emptying device at least from its securing position in the rest position.

The emptying device can also pull the barrier device into its securing position if it itself moves into the emptying position. In the simplest case, the barrier device can be fastened to the lift truck via a cable or a chain, which retracts the barrier device. Also, between the lift truck and the barrier device, a drive element, such. Example, a pressure medium motor may be provided which moves the barrier device in its intended position during the movement of the lift truck.

Depending on the arrangement and configuration, the barrier device can execute any desired movement in order to move from the rest position into the securing position and vice versa. However, it is preferred to pivotally mount the barrier device on the fastener.

The barrier device has at least one horizontally arranged barrier element. As a barrier element is for example a rod, a pipe or a beam of metal in question.

The barrier device has at least one lever arm, which on the one hand is connected to the barrier element and on the other hand has a pivot bearing which is arranged on the fastening element.

To injury to persons, for. B. to avoid when extending the barrier device or when running against people, at least the barrier element is covered with a damping element. For a metal pipe, this can be for example, a foam rubber roll, which is mounted on the tube.

The damping element also serves to cushion and protect the barrier element when the barrier device is pushed by the lowering lowering device or the lowering lifting carriage.

Preferably, the barrier device has a T-shaped or L-shaped configuration.

The length of the lever arm is preferably greater than or equal to the length of a pivot arm of the emptying device. The length also depends on how the barrier device is designed and where the barrier device is attached. It must be ensured that the movement area under the lift truck is secured by the barrier device.

In a pivotable barrier device, the lever arm in the securing position with respect to the vertical preferably assumes an angle α with 70 ° ≤ α ≤ 90 °. This angle has been found to be advantageous if the pivotable barrier device is arranged on the bulkhead housing below the pivot axis of the emptying device. The barrier element has in safety position a distance from the ground of 80 - 120 cm. The advantage of attachment to the bulkhead housing has the advantage that no adaptation of the barrier device is necessary to peculiarities and mounting dimensions of the collecting container. An adjustment of the barrier device is eliminated.

The horizontal extent of the barrier element is preferably greater than or equal to the width of the emptying device, wherein preferably Also, the width of the recorded refuse container is taken into account.

In order to detect the respective position of the barrier device, in particular in the case of a pivotally mounted barrier element, an induction switch or a rotary angle transmitter is preferably provided, wherein the rotary encoder can be arranged on the lever arm.

The method for securing the working area of a lifting truck having a discharge device for emptying refuse containers in a collecting container is characterized in that during a period of time (monitoring phase) of the emptying of the movement area is secured below the lift truck by means of a barrier device by the barrier device in a securing position in the movement range of the lift truck is brought and that the emptying process is interrupted when the barrier device leaves the securing position during the monitoring phase.

Preferably, the monitoring phase is shorter than the emptying process, wherein the monitoring phase is terminated prematurely before completion of the emptying process. The premature termination of the monitoring phase is advantageous if the lift truck pushes the barrier device from its securing position back to the rest position. Otherwise, the emptying device would shut itself off by detecting the barrier device.

The invention also provides an emptying device for emptying refuse containers into a collecting container which has a device for securing the working area, as has been described above.

Devices for securing the work area can be installed as a retrofit kit for existing emptying devices. For new equipment, the emptying device is already shipped with a device for securing the work area and installed.

Since the emptying devices are usually provided with a packing housing, which is attached as a unit to the collecting container, the device for securing the working area is preferably attached to this packing housing. This has the advantage that when installing the device to secure the work area no adjustments to different designs of the collection must be made.

Exemplary embodiments of the invention are explained below with reference to the drawings.

Figur 1

das Heck eines Müllfahrzeuges in Seitenansicht mit einer Entleervorrichtung in Aufnahmestellung und einer Barriereeinrichtung in Ruhestellung,

Figur 2

eine rückwärtige Draufsicht auf die in Figur 1 gezeigte Vorrichtung,

Figur 3

die Seitenansicht der Vorrichtung gemäß Figur 1 in Einkippstellung und die Vorrichtung zur Absicherung des Arbeitsbereiches in Sicherungsstellung,

Figur 4

eine rückwärtige Draufsicht auf die in Figur 3 gezeigte Vorrichtung,

Figur 5

eine schematische Seitenansicht einer Vorrichtung zur Absicherung des Arbeitsbereiches gemäß einer weiteren Ausführungsform, und

Figur 6

die rückwärtige Draufsicht auf zwei Entleervorrichtungen mit zwei Vorrichtungen zur Absicherung des Arbeitsbereiches gemäß einer weiteren Ausführungsform.

Show it:

FIG. 1

the rear of a refuse vehicle in side view with an emptying device in the receiving position and a barrier device in the rest position,

FIG. 2

a rear-top view of the in FIG. 1 shown device,

FIG. 3

the side view of the device according to FIG. 1 in Einkippstellung and the device for securing the work area in securing position,

FIG. 4

a rear-top view of the in FIG. 3 shown device,

FIG. 5

a schematic side view of a device for securing the work area according to another embodiment, and

FIG. 6

the rear plan view of two emptying devices with two devices for securing the work area according to another embodiment.

In the FIG. 1 the rear of a refuse vehicle 1 is shown, which has a collecting container 2, on the rear wall 5, a bedding housing 6 is attached to a discharge device 10. The bulkhead housing 6 has a pouring opening 3, below which a pivot shaft 24 is arranged with a pivot drive, not shown, to which a pivot arm 23 is articulated, which is in the in FIG. 1 shown position extends vertically downwards.

On the pivot shaft 23, an upper hinge strut 21 and a lower hinge strut 22 are arranged, which are articulated on a lift truck 11. The lift truck 11 has vertical struts 12, which together with the hinge struts 21, 22 and the pivot arm 23 form a parallelogram joint 20.

At the top of the lift truck 11, a receiving comb 13 for attaching a refuse container (not shown) is arranged. In the lower region of the lift truck 11, an abutment member 14 is mounted for supporting the container wall. At the lower end of the pivot arm 23, a contact element 26 is provided, which cooperates with the barrier device 30 to be described later.

The barrier device 30 is arranged between the packing housing 6 or the collecting container 2 on the one hand and the lifting carriage 11 or its pivoting arm 23 on the other hand. The barrier device 30 is mounted in a pivot bearing 34 below the pivot shaft 24 on the rear wall 7 of the bulkhead housing 6 and has a lever arm 33, at the free end of a barrier element 31 is arranged, extending in the horizontal direction across the width of the emptying device, or Hubwagen 11 extends, as still in connection with the FIG. 2 is explained.

The length of the lever arm 33 is greater than the length of the pivot arm 23, so that the barrier element 31, which is formed as a tube or rod, is located below the free end of the pivot arm 23. The attached to the pivot arm 23 contact element 26 pushes the barrier device 30 to the rear and holds them in the in FIG. 1 shown rest position.

The area in front of the lift truck 11 is referred to as a feeder area Z, in which the refuse containers are removed and transported.

In the FIG. 2 the rear view of the collection container 2 is shown. It can be seen that two emptying devices 10a, 10b are arranged side by side. Accordingly, two barrier devices 30 are arranged side by side, each having a T-shaped configuration. It can be seen that the lever arms 33 extend parallel to the respective pivot arms 23 of the emptying devices 10a, 10b and that the barrier elements 31 are arranged horizontally.

In the region of the pivot bearing 34, a sensor device 40 is arranged, each with an inductive switch 41, which is connected to a separate control device 45. About the Sensor device 40, the position of the barrier device 30 is detected and corresponding signals are output to the control device 45. It can be determined by means of the switch 41, whether z. B. the lever arm 33 is also in the securing position.

In the FIG. 3 the emptying device 10 is shown in Einkippstellung. This means that the refuse container 8 is immersed in the pouring opening 3, so that the container contents in the in the FIG. 3 not shown collecting container 2 falls. The range of movement of the emptying device 10 is characterized by the swivel range S. The barrier device 30 is located in the in FIG. 3 shown representation in its securing position. Here, the lever arm 33 takes an angle α in the order of 75 °. It can clearly be seen that the entire pivoting area S is covered by the barrier device, so that this area is mechanically blocked off from the feeder side.

For deflecting the barrier device 30 is on the lever arm 33, a drive means 37 in the form of a spring means 35. The spring means 35 consists of a gas pressure cylinder 37, which is arranged on the one hand on the lever arm 33 and on the other hand on the pivot bearing 34. The pivot bearing 34 is fixed to the stationary fastening element in the form of the rear wall 7 of the bulkhead housing 6.

The sensor device 40 has, as an alternative to the in FIG. 1 and 2 Sensor device shown on a rotary encoder 42 which is integrated in the pivotal mounting of the lever arm 33.

In the FIG. 4 the rear view is also shown for this position. The exposed barrier means 30 clearly show the T-shape of lever arm 33 and barrier member 31.

In the FIG. 5 a further embodiment shown, wherein the emptying device 10 is in Einkippstellung. The barrier device 30 is pivotally mounted on the lift truck 11 and is self-securing position when the emptying device 10 is pivoted up. Between the lift truck 11 and the lever arm 33, a drive device 37 is provided, which positions the barrier device 30 in the securing position and, when pivoting back the emptying device, draws in the barrier device 30.

In the FIG. 6 a further embodiment is shown, in which the two barrier devices 30 are each formed in an L-shape. The two lever arms 33 of the two barrier devices 30 are arranged adjacent to each other and attached to a common pivot bearing 34. Respectively on the outside gas springs 36 are articulated. The barrier elements 31 have a damping element 32 in the form of a foam roller, which are pulled over the tubular barrier elements 31.

reference numeral

1

garbage truck

2

Clippings

3

pour-in

5

Rear wall of the collection container

6

fill housing

7

Rear wall of the bulkhead housing

8th

garbage Bin

10

emptying

10a, b

emptying

11

lift trucks

12

strut

13

comb

14

Abutment member

20

parallelogram

21

upper joint strut

22

lower hinge strut

23

swivel arm

24

pivot shaft

26

contact element

30

barrier device

31

barrier member

32

damping element

33

lever arm

34

pivot bearing

35

spring means

36

Gas spring

37

driving means

40

sensor device

41

inductive switch

42

Rotary encoder

45

control device

S

swivel range

Z

feeder area

Claims (23)

1. Device for securing the operating range of emptying devices (10) for emptying refuse containers (8) into a collecting container (2), in particular of emptying devices with laterally disposed barriers, wherein the emptying device (10) comprises a lifting carriage (11) for receiving the refuse container (8), characterised in
   that a barrier mechanism (30), which can move from a rest position into a securing position and vice versa, is disposed between the collecting container (2) and the lifting carriage (11),
   which mechanism extends in the securing position below the lifting carriage (11) into the range of movement (S) of the lifting carriage (11).
2. Device according to Claim 1, characterised in that the barrier mechanism (30) is connected to a control mechanism (45) which is formed to interrupt the emptying process if the barrier mechanism leaves the securing position during a period (monitoring phase) of the emptying process of the emptying device (10).
3. Device according to Claim 2, characterised in that the barrier mechanism (30) comprises a sensor mechanism (40) which is connected to the control mechanism (45) and which detects the position of the barrier mechanism (30).
4. Device according to Claim 3, characterised in that the control mechanism (45) is the control mechanism of the emptying device (10).
5. Device according to any one of Claims 1 to 4, characterised in that the barrier mechanism (30) is disposed at a mobile fastening element of the emptying device (10) or a stationary fastening element of the emptying device (10) or of the collecting container (2).
6. Device according to any one of Claims 1 to 5, characterised in that the barrier mechanism (30) comprises at least one drive mechanism (37) which moves the barrier mechanism (30) at least from the rest position into the securing position.
7. Device according to Claim 6, characterised in that the drive mechanism (37) is a spring mechanism (35) which is supported at the fastening element.
8. Device according to Claim 7, characterised in that the spring mechanism (35) comprises at least one gas pressure spring (36).
9. Device according to Claim 6, characterised in that the drive mechanism (37) is at least one pressure medium-operated motor which is supported at the fastening element.
10. Device according to any one of Claims 1 to 9, characterised in that the barrier mechanism (30) can be moved by means of the emptying device (10) at least from its securing position into the rest position.
11. Device according to any one of Claims 1 to 10, characterised in that the barrier mechanism (30) is pivotably mounted at the fastening element.
12. Device according to any one of Claims 1 to 11, characterised in that the barrier mechanism (30) comprises at least one horizontally disposed barrier element (31).
13. Device according to any one of Claims 1 to 12, characterised in that the barrier mechanism (30) comprises at least one lever arm (33) which on one side is connected to the barrier element (31) and on the other side comprises a pivot mounting (34) which is disposed at the fastening element.
14. Device according to either of Claims 12 and 13, characterised in that at least the barrier element (31) is covered with a damping element (32).
15. Device according to any one of Claims 1 to 14, characterised in that the barrier mechanism (30) has a T-shaped or L-shaped form.
16. Device according to any one of Claims 1 to 15, characterised in that the length of the lever arm (33) is greater than or equal to the length of the pivoting arm (23) of the emptying device (10).
17. Device according to any one of Claims 13 to 16, characterised in that the lever arm (33) takes up an angle α where 70° ≤ α ≤ 90°.
18. Device according to any one of Claims 1 to 17, characterised in that the horizontal extent of the barrier element (31) is greater than or equal to the width of the emptying device (10).
19. Device according to any one of Claims 3 to 18, characterised in that the sensor mechanism (40) comprises an inductive switch (41) or a rotational angle transducer (42).
20. Emptying device for emptying refuse containers into a collecting container with a device for securing the operating range according to any one of Claims 1 to 19.
21. Method for securing the operating range of an emptying device, which comprises a lifting carriage, for emptying refuse containers into a collecting container, characterised in that, during the period of the emptying process, the range of movement below the lifting carriage (11) is secured by means of a barrier mechanism (30) by bringing the barrier mechanism (30) into a securing position into the range of movement (S) of the lifting carriage (11), and
    that the emptying process is interrupted if the barrier mechanism (3) leaves the securing position during the monitoring phase.
22. Method according to Claim 21, characterised in that the monitoring phase is shorter than the emptying process.
23. Method according to Claim 21 or 22, characterised in that the monitoring phase is terminated prematurely before the emptying process is terminated.

Images