REFUSE TRUCK

Description

[0001] The present invention relates to a refuse collection vehicle.

[0002] Waste collection systems have been disclosed in Australian Patent Specifications Nos. 15277/92 and 22410/92, the first relating to a refuse container of the wheely bin type having a plurality of discrete compartments and the latter to a collection vehicle for handling such multi-compartment bins in which the compartment of the vehicle extends across the vehicle at different levels for even weight distribution.

[0003] A divisional Petty Patent No. 647724 relates to a collection vehicle for recyclable elements held in two or more compartments in a bin. The petty patent specification discloses two or more chutes which are aligned with the bin compartments, each chute communicating with one of a plurality of storage zones in the vehicle. The storage zones are located on different horizontal planes one above the other.

[0004] Australian Patent Specification No. 74229/91 discloses a multi-compartment bin having separate access openings.

[0005] European Patent Specification No. 0356833 discloses a refuse collection vehicle with several vertical shafts having an adjustable guide baffle for the incoming refuse.

[0006] German Patent Specification No. 3510700 discloses a vehicle having separate chambers for different kinds of refuse.

[0007] German Patent Specification No. 3537546 discloses a refuse collection vehicle with a container divided by horizontal partitions.

[0008] German Patent Specification No. 3703557 discloses a collection vehicle with collecting shafts for refuse controlled by a movable flap diverting flow of refuse to different shafts.

[0009] US Patent No. 5176488 discloses a rear loading refuse vehicle which collects, compacts and separates recyclable materials.

[0010] Other patents of which we are aware are US Patent Nos. 5123801, 5078567 and 5035564, WO 90/11952 and US Patent No. 5035563.

[0011] One of the problems perceived with the collection and separation of different types of refuse in the refuse collection vehicle is the differing volumes of refuse and the possibility of inadequate utilization of refuse vehicle storage volume in the collection of such refuse. Furthermore different types of refuse usually require differing levels of compaction in the loading compartment of the refuse vehicle. For example, it is advantageous if glass is not broken and therefore relatively low compaction forces are desirable for glass bottles and similar recyclable materials.

[0012] It is difficult to maintain low levels of compaction where the vehicle body is made longer to achieve greater volumes, it has been found difficult to achieve adequate compaction in long body volumes and similar problems occur in achieving removal or discharge of the compacted material from the divided container.

[0013] Single paddle compaction systems are well known having been disclosed in our Australian Patent Application No. 60230/90 and German Patent Specification No. 1196122. Furthermore, double paddle systems are known to the applicant, for example as disclosed by the Geesink refuse collection machinery.

[0014] Other examples of paddle type compactor systems are disclosed in British Patent No. 651156 and Australian Patent No. 552878. All of these patents relate to means of controlling and actuating a single reciprocating paddle for compacting refine into a refuse vehicle compartment.

[0015] EP-A-0 314 238 discloses a refuse vehicle having compartments with packing blades which are connected to a common drive shaft. WO-A-92 01613 discloses a compacting device in which a variable torque can be provided to a paddle.

[0016] According to the present invention, there is provided a refuse collection vehicle having first and second separate refuse storage compartments, each of said compartments having a compactor device including a paddle, each paddle being connected to a common drive shaft, the paddle associated with one of the refuse storage compartments having different dimensions to the paddle associated with the other refuse storage compartment so that the paddles exert different compaction forces on refuse by virtue of their different dimensions.

[0017] Said common drive shaft may be driven by a pair of hydraulic cylinders.

[0018] Each of said paddles may be adapted to pivot through an arc that extends over an angle of approximately 180°.

[0019] One of said refuse storage compartments may be partly or wholly above the other one of said refuse storage compartments, the paddle associated with the upper refuse storage compartment being shorter than the paddle associated with the lower refuse storage compartment.

[0020] There may be control means ranged to control the operation of the paddle, the control means having one mode of operation wherein the paddles continuously pivot back and forth through an arc and another mode of operation wherein the paddles pivot through an arc for a given number of cycles when a specific signal is given.

[0021] The vehicle may include sensor means associated with the compactor device and control means for controlling the compactor device responsive to the sensor means whereby to provide different degrees of compaction of refuse in said storage compartments.

[0022] At least one of the refuse storage compartments may include a first and second region, there being provided a door, the door being ranged such that when the one compartment is empty the door is in an initial position and separates the first region from the second region, the door being adapted to move from its initial position to allow entry of refuse into said second region when the first region fills.

[0023] There may be provided an overflow region, each of the refuse storage compartments being provided with a door which may be opened to allow entry of refuse into said overflow region, any one of said doors being selectively openable to allow refuse from the refuse storage compartment associated with that door to enter the overflow region.

[0024] At least one refuse storage compartment in addition to the compactor device may include a rake adapted to move refuse in a direction away from the refuse entry part of the refuse storage compartment. Said rake may be mounted for reciprocating movement. Said rake may include refuse engaging means with a rake blade, said refuse engaging means being mounted in such a way as to push refuse along said at least one refuse storage compartment when travelling in one direction but to pivot or flex out of pushing engagement with the refuse when travelling in the opposite direction.

[0025] The vehicle may include chute means having a mouth divider adapted to interengage with a divider of a refuse bin to direct refuse from different parts of the storage bin into separate refuse compartments in the vehicle.

[0026] The present invention will now be described, by way of example, with reference to the accompanying drawings in which:

Figure 1 is a side elevational view of a double compartmented refuse vehicle made in accordance with the present invention;

Figure 2 is a perspective view of an intake head for engaging a refuse bin;

Figure 3 is a side view showing an unloading process of a refuse bin;

Figure 4 is a sectional side view of a paddle compactor taken on line V-V; and

Figure 5 is a plan view of the paddle compactor shown in Figure 4.

[0027] With reference to Figure 1 the refuse collection vehicle incorporates a multi-compartmented container 10 as viewed from the side having a dividing floor 11 with the left hand end of the compartment being fed from separate chutes and compacted by an upper and lower paddle 12 and 13.

[0028] Refuse is collected through the intake mouth which will be described in greater detail later.

[0029] The upper compartment at least is preferably provided with a rake means 14 which is adapted to reciprocate along the length of the upper compartment to draw refuse from the compaction end to the rear end of the vehicle. The rake means includes tines 15 pivotally mounted on support means which are moved by a power cylinder 16 to and fro along the length of the container. The tines 15 may be simple spring tines to apply a larger force when travelling to the rear end of the vehicle as compared to the force applied when travelling towards the compaction end of the vehicle brought about by the configuration of the tines 15.

[0030] It has been found that the rake means 14 is particularly suitable for pushing the loose recyclable material such as glass bottles etc., which is best not subjected to high compaction forces. Thus the rake 14 achieves movement of the material along the length of the compartment to fully utilise the volume therein.

[0031] The rear end of the vehicle includes a pair of doors which may be sliding doors or swing doors on the upper and lower compartments which are selectively openable to provide an overflow of material into the unloading volume at the rear of the vehicle in the event of one of the compartments overfilling prior to the other compartment. The doors are selectively openable such that either of the compartments can overfill into the rear compartment 17. The doors 18 and 19 are mounted on pivots however alternative means such as sliding doors 20 may be provided to control movement of the refuse material out of the compartments. The doors 18 and 19 may be automatically controlled to open when one or the other compartments first fills, so that additional refuse can be filled into the rear part of the compartment until both compartments are filled or virtually filled.

[0032] With reference to Figure 2 there is a shown an intake mouth 8 which is pivotally mounted on shaft 9 and controlled by power cylinder 21 to move in an arcuate manner during an unloading operation to meet the open mouth of a refuse bin prior to it being tipped vertically during an unloading operation. This will minimize spillage of the contents of the bin prior to it being tipped over into the intake mouth.

[0033] The intake mouth includes a cushion edge 22 which is adapted to interengage with the edge of the refuse bin together with its central divider. The central divider may be directed in a north-south or east-west direction as desired.

[0034] The upper and lower paddles 12,13 best shown in Figures 4 and 5 are commonly mounted on a vertical shaft 30 driven by a hydraulic motor or the like 31. The upper paddle is of shorter dimension and therefore applies less forces during compaction of the upper compartment which may contain fragile material such as glass bottles. The lower compartment destined to collect crushable and compressible general household and putrescible refuse has a larger dimension paddle 13 adapted to apply a greater compaction force to the refuse material and therefore achieve greater compression of the refuse material which is usually putrescible household refuse in the lower compartment.

[0035] The upper and lower paddles 12,13 are removably bolted to the drive shaft 30. This allows for the use of paddles of selected dimensions for specific purposes depending upon the nature of material to be handled by the collection vehicle. Thus if the predominant material to be carried is recyclable, small dimension low compaction pressure paddles would be used and large dimension paddles for high pressure compaction systems would be used.

[0036] The paddles are preferably driven by a hydraulic motor 31 which lends itself to electronic control means (not shown). The control means may include pressure sensors associated with the paddle drive operating so that the paddle movement through its angular arc of approximately 180° senses any impact upon material in the chamber whereby the panel drive is controlled to move the paddles upon demand as the collection vehicle is loaded with material.

[0037] The dividing floor 11 extends horizontally in a horizontal plane along the compartment of the vehicle. To avoid difficulty in unloading, the compacted refuse that has accumulated in the lower chamber the floor 11 is adapted to be pivotal at the loading end to allow the floor to move upwardly at the unloading end and thereby release pressure on the load for easy tipping at a tip site. This is a particularly useful feature when the chamber is very long as is conventional in modern refuse vehicles. The floor will tilt approximately 6° to allow the floor to lift approximately 30 centimetres at the discharge end. The floor may be manually or hydraulically lifted to achieve this result.

Claims

1. A refuse collection vehicle having first and second separate refuse storage compartments, each of said compartments having a compactor device including a paddle (12, 13), each paddle being connected to a common drive shaft (30), the paddle (12) associated with one of the refuse storage compartments having different dimensions to the paddle (13) associated with the other refuse storage compartment so that the paddles exert different compaction forces on refuse by virtue of their different dimensions.

2. A refuse collection vehicle according to claim 1, wherein said common drive shaft (30) is driven by a pair of hydraulic cylinders.

3. A refuse collection vehicle according to claim 1 or 2, wherein each of said paddles (12, 13) is adapted to pivot through an arc that extends over an angle of approximately 180°.

4. A refuse collection vehicle according to any preceding claim, wherein one of said refuse storage compartments is partly or wholly above the other one of said refuse storage compartments, the paddle (12) associated with the upper refuse storage compartment being shorter than the paddle (13) associated with the lower refuse storage compartment.

5. A refuse collection vehicle according to any preceding claim with control means arranged to control the operation of the paddles (12,13), the control means having one mode of operation wherein the paddles (12,13) continuously pivot back and forth through an arc and another mode of operation wherein the paddles (12,13) pivot through an arc for a given number of cycles when a specific signal is given.

6. A refuse collection vehicle according to any preceding claim, including sensor means associated with the compactor device and control means for controlling the compactor device responsive to the sensor means whereby to provide different degrees of compaction of refuse in said storage compartments.

7. A refuse collection vehicle according to any preceding claim, wherein at least one of the refuse storage compartments includes a first and second region, there being provided a door, the door being arranged such that when one compartment is empty the door is in an initial position and separates the first region from the second region, the door being adapted to move from its initial position to allow entry of refuse into said second region when the first region fills.

8. A refuse collection vehicle according to any preceding claim, wherein there is provided an overflow region, each of the refuse storage compartments being provided with a door (18, 19, 20) which may be opened to allow entry of refuse into said overflow region, any one of said doors being selectively openable to allow refuse from the refuse storage compartment associated with that door to enter the overflow region.

9. A refuse collection vehicle according to any preceding claim, wherein at least one refuse storage compartment in addition to the compactor device includes a rake (14) adapted to move refuse in a direction away from the refuse entry part of the refuse storage compartment.

10. A refuse collection vehicle according to claim 9, wherein said rake is mounted for reciprocating movement.

11. A refuse collection vehicle according to claim 9 or 10, wherein said rake (14) includes refuse engaging means (15) with a rake blade, said refuse engaging means being mounted in such a way as to push refuse along said at least one refuse storage compartment when travelling in one direction but to pivot or flex out of pushing engagement with the refuse when travelling in the opposite direction.

12. A refuse collection vehicle according to any preceding claim, including chute means having a mouth divider adapted to interengage with a divider of a refuse bin to direct refuse from different parts of the storage bin into separate refuse compartments in the vehicle.

Ansprüche

1. Müllfahrzeug mit einem ersten und einem separaten zweiten Behälterabteil zur Abfallspeicherung, wobei jedes der genannten Behälterabteile eine Verdichtungsvorrichtung aufweist, die jeweils ein Paddel (12, 13) einschließt, wobei jedes Paddel mit einer gemeinsamen Antriebswelle (30) verbunden ist und das dem einen der Behälterabteile zur Abfallspeicherung zugeordnete Paddel (12) andere Abmessungen als das dem anderen Behälterabteil zugeordneten Paddel (13) aufweist, derart, daß die Paddel aufgrund ihrer unterschiedlichen Abmessungen unterschiedliche Verdichtungskräfte auf die Abfälle ausüben.

2. Müllfahrzeug nach Anspruch 1, wobei die genannte gemeinsame Antriebswelle (30) von einem Paar hydraulischer Zylinder angetrieben wird.

3. Müllfahrzeug nach Anspruch 1 oder 2, wobei jedes der genannten Paddel (12, 13) so eingerichtet ist, daß es durch ein Bogensegment schwenkt, das sich über einen Winkel von ungefähr 180° erstreckt.

4. Müllfahrzeug nach einem der vorstehenden Ansprüche, wobei einer der genannten Behälterabteile zur Abfallspeicherung teilweise oder vollständig oberhalb des anderen der genannten Behälterabteile zur Abfallspeicherung angeordnet ist und das dem oberen Behälterabteil zur Abfallspeicherung zugeordnete Paddel (12) kürzer ist als das dem unteren Behälterabteil zur Abfallspeicherung zugeordnete Paddel (13).

5. Müllfahrzeug nach einem der vorstehenden Ansprüche mit einer Steuerungsvorrichtung zur Steuerung des Betriebs der Paddel (12, 13), wobei die Steuerungsvorrichtung eine Betriebsart aufweist, bei der die Paddel (12, 13) kontinuierlich innerhalb eines Bogensegments vor und zurück schwenken, sowie eine andere Betriebsart aufweist, bei der die Paddel (12, 13) für eine bestimmte Anzahl von Zyklen innerhalb eines Bogensegments schwenken, sobald ein spezifisches Signal gegeben wird.

6. Müllfahrzeug nach einem der vorstehenden Ansprüche, mit einer der Verdichtereinheit zugeordneten Sensorvorrichtung und einer Steuervorrichtung zur Steuerung der Verdichtereinheit in Abhängigkeit von der Sensorvorrichtung, derart, daß unterschiedliche Verdichtungsgrade des Abfalls in den genannten Speicherabteilen vorsehbar sind.

7. Müllfahrzeug nach einem der vorstehenden Ansprüche, wobei zumindest eines der Behälterabteile zur Abfallspeicherung einen ersten und einen zweiten Bereich einschließt, und wobei eine Tür vorgesehen ist, die so angeordnet ist, daß sie sich, wenn die eine Behälterabteilung leer ist, in einer Ausgangsposition befindet und den ersten Behälterbereich vom zweiten Behälterbereich abtrennt; und die Tür aus ihrer Ausgangsposition bewegbar ist, um den Eintritt von Abfällen in den genannten zweiten Behälterbereich zu ermöglichen, wenn sich der erste Behälterbereich füllt.

8. Müllfahrzeug nach einem der vorstehenden Ansprüche, wobei ein Überlaufbereich vorgesehen ist und jedes der Behälterabteile zur Abfallspeicherung mit einer Tür (18, 19, 20) versehen ist, welche geöffnet werden kann, um den Eintritt von Abfällen in den genannten Überlaufbereich zu bewirken, und wobei jede der genannten Türen für sich geöffnet werden kann, um Abfällen aus dem dieser Tür zugeordneten Behälterabteil zur Abfallspeicherung den Eintritt in den Überlaufbereich zu ermöglichen.

9. Müllfahrzeug nach einem der vorstehenden Ansprüche, wobei zumindest ein Behälterabteil zur Abfallspeicherung zusätzlich zu der Verdichtereinheit einen Rechen (14) einschließt, mit dem Abfälle in einer vom Bereich des Eintritts der Abfälle in das Behälterabteil zur Abfallspeicherung weg weisenden Richtung bewegbar sind.

10. Müllfahrzeug nach Anspruch 9, wobei der genannte Rechen so montiert ist, daß er hin- und hergehend bewegbar ist.

11. Müllfahrzeug nach Anspruch 9 oder 10, wobei der genannte Rechen (14) eine Vorrichtung zur Mitnahme von Abfällen (15) mit einem Rechenbalken aufweist, und die genannte Vorrichtung zur Mitnahme von Abfällen so montiert ist, daß sie Abfälle in zumindest einem der Behälterabteile zur Abfallspeicherung in Längsrichtung vor sich herschiebt, wenn sie sich in die eine Richtung bewegt, jedoch zurückschwenkt oder aus dem schiebenden Eingriff mit den Abfällen elastisch herausgebogen wird, wenn sie sich in die entgegengesetzte Richtung bewegt.

12. Müllfahrzeug nach einem der vorstehenden Ansprüche mit einer Rutsche, die ein Verteilermundstück aufweist, das am Verteiler einer Mülltonne zur Anlage bringbar ist, derart, daß Abfälle aus unterschiedlichen Bereichen der Abfalltonne in verschiedene Abfall-Behälterabteile im Fahrzeug geleitet werden.

Revendications

1. Véhicule de ramassage des ordures ayant des premier et second compartiments de stockage des ordures distincts, chacun des compartiments ayant un dispositif de compactage comportant une pale (12, 13), chaque pale étant reliée à un arbre (30) d'entraînement commun, la pale (12) associée à l'un des compartiments de stockage des ordures ayant des dimensions différentes de celles de la pale (13) associée à l'autre compartiment de stockage des ordures, de sorte que les pales exercent des forces de compactage différentes sur des ordures en raison de leurs dimensions différentes.

2. Véhicule de ramassage des ordures suivant la revendication 1, dans lequel l'arbre (30) d'entraînement commun est entraîné par une paire de vérins hydrauliques.

3. Véhicule de ramassage des ordures suivant la revendication 1 ou 2, dans lequel chacune des pales (12, 13) est conçue pour pivoter le long d'un arc qui s'étend sur un angle d'approximativement 180°.

4. Véhicule de ramassage des ordures suivant l'une quelconque des revendications précédentes, dans lequel l'un des compartiments de stockage des ordures est partiellement ou complètement au-dessus de l'autre compartiment de stockage des ordures, la pale (12) associée au compartiment de stockage des ordures supérieur étant plus courte que la pale (13) associée au compartiment de stockage des ordures inférieur.

5. Véhicule de ramassage des ordures suivant l'une quelconque des revendications précédentes, comportant des moyens de commande disposés de manière à commander le fonctionnement des pales (12, 13), les moyens de commande ayant un mode de fonctionnement dans lequel les pales (12, 13) pivotent de manière continue suivant un mouvement de va et vient le long d'un arc, et un autre mode de fonctionnement dans lequel les pales (12, 13) pivotent suivant un arc pour un nombre de cycles donné lorsqu'un signal précis est donné.

6. Véhicule de ramassage des ordures suivant l'une quelconque des revendications précédentes, comportant des moyens formant capteurs associés au dispositif de compactage et des moyens de commande destinés à commander le dispositif de compactage en réponse aux moyens formant capteurs, grâce à quoi on obtient des degrés différents de compactage des ordures dans les compartiments de stockage.

7. Véhicule de ramassage des ordures suivant l'une quelconque des revendications précédentes, dans lequel au moins l'un des compartiments de stockage des ordures comportent une première et une seconde régions, une porte étant prévue, la porte étant disposée de sorte que lorsque l'un des compartiments est vide la porte est dans une position initiale et sépare la première région de la seconde région, la porte étant conçue pour quitter sa position initiale pour permettre l'entrée des ordures dans la seconde région lorsque la première région s'emplit.

8. Véhicule de ramassage des ordures suivant l'une quelconque des revendications précédentes, dans lequel il est prévu une région de débordement, chacun des compartiments de stockage des ordures étant muni d'une porte (18, 19, 20) qui peut être ouverte pour permettre l'entrée des ordures dans la région de débordement, n'importe laquelle des portes pouvant être ouverte de manière sélective pour permettre aux ordures provenant du compartiment de stockage des ordures associé à cette porte de pénétrer dans la région de débordement.

9. Véhicule de ramassage des ordures suivant l'une quelconque des revendications précédentes, dans lequel au moins un compartiment de stockage des ordures en plus du dispositif de compactage comporte un râteau (14) conçu pour déplacer des ordures dans un sens s'éloignant de la partie d'entrée des ordures du compartiment de stockage des ordures.

10. Véhicule de ramassage des ordures suivant la revendication 9, dans lequel le râteau est monté pour un mouvement de va et vient.

11. Véhicule de ramassage des ordures suivant la revendication 9 ou 10, dans lequel le râteau (14) comporte des moyens (15) de coopération avec des ordures comportant une lame de râteau, les moyens de coopération avec des ordures étant montés d'une manière telle qu'ils poussent de l'ordure le long dudit au moins un compartiment de stockage des ordures lorsqu'ils se déplacent dans un sens et pivotent ou fléchissent pour cesser de pousser les ordures lorsqu'ils se déplacent dans le sens opposé.

12. Véhicule de ramassage des ordures suivant l'une quelconque des revendications précédentes, comportant des moyens formant glissière ayant un diviseur d'embouchure conçu pour coopérer avec un diviseur d'une trémie d'ordures pour diriger de l'odure à partir de différentes parties de la trémie de stockage dans des compartiments d'ordures distincts dans le véhicule.

Drawing