EP2299000B1 - Tank for receiving waste collected by a road vehicle - Google Patents

Tank for receiving waste collected by a road vehicle Download PDF

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Publication number
EP2299000B1
EP2299000B1 EP10174081.9A EP10174081A EP2299000B1 EP 2299000 B1 EP2299000 B1 EP 2299000B1 EP 10174081 A EP10174081 A EP 10174081A EP 2299000 B1 EP2299000 B1 EP 2299000B1
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EP
European Patent Office
Prior art keywords
tank
tank according
duct
suction duct
turbine
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Not-in-force
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EP10174081.9A
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German (de)
French (fr)
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EP2299000A2 (en
EP2299000A3 (en
Inventor
Nicolas Jungo
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Nilfisk AS
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Nilfisk AS
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Publication of EP2299000A2 publication Critical patent/EP2299000A2/en
Publication of EP2299000A3 publication Critical patent/EP2299000A3/en
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Publication of EP2299000B1 publication Critical patent/EP2299000B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
    • E01H1/0854—Apparatus in which the mechanically dislodged dirt is partially sucked-off, e.g. dislodging- sweeping apparatus with dirt collector in brush housing or dirt container

Definitions

  • the present invention relates to a tank more particularly intended to collect the waste during cleaning operations carried out by means of a road vehicle, whether motorized or not, of the urban sweeper type.
  • Vehicles of this type are generally composed of a front structure intended to control the craft, extending rearwardly by a frame receiving a tank designed to collect the waste collected by cleaning means generally located under the frame , via a suction system and a turbine.
  • a front structure intended to control the craft, extending rearwardly by a frame receiving a tank designed to collect the waste collected by cleaning means generally located under the frame , via a suction system and a turbine.
  • An example of a vehicle of this type is described for example in the document US 4,754,521 .
  • the waste present on the surface to be cleaned is initially grouped in the zone located substantially under the chassis of the vehicle by means for example of lateral brushes before being collected through a pipe of suction, the suction circuit being powered by a turbine.
  • This turbine creates a flow that has the effect of allowing the collection of waste collected by the brushes and their transfer through a suction duct to the bucket or collection tank, the sucked air being then discharged to the outside the tank.
  • a too short duct would render the device completely inoperative by rapidly causing clogging phenomena by particles of the collected waste which would tend to accumulate in the immediate periphery of the mouth of the duct, with there also risks of large rejection
  • Another mode known embodiment consists in the opposite to position the turbine on the top of the tank, and more specifically in the tank lid.
  • a modality of this type is described for example in the patent EP 0750 072 .
  • This modality nevertheless has various drawbacks, especially with regard to the center of gravity of the assembly which is offset upward, hence possible problems of stability or balance, especially when the vehicle is moving.
  • the document FR2912434 discloses a receiving tank for waste taken by a road vehicle, associated with suction means comprising a turbine and a suction pipe having a plurality of tubular portions forming a U.
  • the tank is engulfed on the lower branch formed by the portion of tube disposed under the bottom of the tank.
  • the two lateral branches formed by the outer tube portion or portions extend respectively on either side of the tank to join the upper part.
  • the tank according to this document does not include any means for filtering the particles and separating them from the air discharged to the outside, hence the risk of dust and solids being discharged to the outside.
  • the present invention proposes to overcome these disadvantages by providing a refuse tank for a road vehicle which is independent of the waste suction means and which has internal arrangements for separating the particles sucked from the exhaust air. More particularly, the tank according to the invention is associated with a vertical axis turbine positioned under the tank, said turbine not tilting with the tank during the emptying operations, and an external suction duct cooperating with means of filtration and separation of particles disposed within the vessel.
  • the figure 1 represents a conventional type of road vehicle on which a tank according to the present invention has been arranged.
  • the vehicle is composed of a chassis (1), which here is articulated in two parts, a front part (1a) and a rear part (1b). It will be pointed out however that the tank according to the invention could perfectly be arranged on a non-articulated chassis.
  • the front part (1a) of the frame receives a cabin (2) from which the user can control and steer the vehicle, and control the various accessories to perform the cleaning function of a specific area.
  • the cleaning means (3) which consist here of two brushes (3a and 3b) mounted on a structure ( 4) allowing their deployment and their withdrawal.
  • the rear part (1b) of the chassis receives the tank (5) and the suction means of waste taken from the ground which cooperate with the tank.
  • the tank (5) is positioned on a frame (7) consisting of two symmetrical L-shaped side pieces (17, 17 '), each arranged at the rear end of the frame (1b).
  • Each of the side pieces (17, 17 ') has a horizontal arm attached to the frame and a vertical arm perpendicular to the frame. Since the side pieces (17) and (17 ') are substantially symmetrical, only one of them is shown in the figures and identified under the number 17.
  • the upper rear end of the tank (5) is articulated around an axis of rotation (13) connecting the respective ends of the vertical arms of the side pieces (17, 17 ').
  • the suction means comprise a turbine (6) of vertical axis which is mounted on the horizontal arm of the side pieces (17, 17 ').
  • the front end of the turbine is framed on both sides by elements (27) of substantially triangular shape.
  • the triangular elements (27) are mounted on the respective ends of the horizontal arms of the side pieces (17, 17 ') of the support (7).
  • the bottom outer wall of the tank (5) comprises a reinforcement (37) consisting of a horizontal plate partially covering the rear end of the front end of the turbine (6) and arranged in correspondence of the end portion of the piece (27), so as to protect said bottom when the tank is in the lowered position.
  • the tank (5) is thus positioned above the turbine (6), without there being any integral connection between said tank and said turbine, and without risk of damage to said turbine since the plate reinforcement (37) protecting the bottom of the tank (5) rests on the lower end of the piece (27) which is slightly higher than the upper surface of the turbine.
  • the suction means also comprise a suction duct (8) cooperating with the turbine (6), the lower end of said duct being associated with a nozzle (not shown) in order to allow the collection of the waste brought back by the brushes ( 3a, 3b) towards the central axis of the vehicle and the upper end opening towards the inside of the tank (5).
  • the duct (8) is characterized in that it comprises a plurality of tubular portions forming a U.
  • the tank (5) is engulfed on the lower branch (8c) formed by the portion of tube disposed under the bottom (5a) of the tank (5).
  • the duct (8) follows a path outside the tank (5), going up along its side walls (5c and 5d), and is therefore not positioned partly inside. of the tank as in vehicles of known type.
  • the conduit (8) is made in one piece, so that it is not necessary to use connecting means to ensure the connection between, on the one hand, the different sections of tube that compose it, and secondly with the nozzle and the tank (5), the waste following a single path without risk of internal clogging.
  • the figure 4 illustrates more particularly the interior arrangement of the tank (5) and the means associated with the suction duct (8) for filtering the particles and separating them from the exhaust air to the outside.
  • the filtration and dust separation means are composed of a central deflector (20) associated with lateral grids (21a, 21b).
  • the deflector (20) consists of a truncated cone-shaped piece, which is positioned against the upper wall of the tank (5), equidistant from the side walls (5c and 5d), and in correspondence of the delimited area by the respective upper parts of the lateral branches (8a and 8b) of the suction duct (8). More specifically, the deflector (20) comprises a flat base (20a) which is fixed, for example by means of rivets, against the upper wall (5b) of the tank (5).
  • the width of the planar base (20a) is substantially equal to a quarter of the width of the tank (5).
  • the length of the plane base (20a) is substantially equal to the diameter of the conduit (8) in correspondence of which it is positioned.
  • the two ends of the flat base (20a) facing the side walls (5c and 5d) of the tank (5) are each extended by a rigid plate (20b, 20c), defining a lateral edge in the plane perpendicular to that of said base (20a).
  • the length of the rigid plates (20b and 20c) may vary, but preferably will be substantially equal to the length of the planar base (20a).
  • the grids (21a, 21b) may be coated with a release material, or receive a release-resistant surface treatment.
  • the grids (21a and 21b) have an accordion shape, which increases the suction surface and prevent the adherence of light objects in the air sucked.
  • the combination of the baffle (20) and the lateral grids (21a, 21b) accordion makes it possible to create inside the tank (5) a swirling air flow which facilitates the separation between the dust and the waste which is brought by gravity to be deposited on the bottom of the tank. This significantly reduces the release of dust and solid bodies to the outside.
  • the external positioning of the suction duct makes it possible to use a tank having a perfectly flat bottom.
  • the tank according to the invention has another improvement due to the separation of the suction turbine.
  • the tank (5) can tilt under the action of a jack (10) connecting the frame (7) to the rear of the tank, to control either the raising of the tank to a vertical drain position, or his return to his position of horizontal use.
  • Non-rigid traction means (11) are arranged on at least one of the sides of the tank (5) and are connected by one of their ends to the upper arms of the lateral elements (17, 17 ') of the frame (7), under the axis (13), and at the other end to an attachment arm (12) extending from the cover (9).
  • the lid (9) will then be pushed upwards under the effect of the traction exerted by the traction means (11), and will be held in the open position as the bowl (5) tilts towards the rear, but without risk of unexpected closure.
  • This method of emptying the tank according to the invention is achieved by means of particularly uncomplicated elements and therefore inexpensive and in any case much easier to use than the hydraulic devices that usually equip tanks of known type.
  • the traction means (11) may consist of cables.
  • the proposed modality also allows to ensure a total opening to 90 ° of the lid, which allows to drain in the best possible conditions.
  • the present invention has been described above with respect to a preferred mode of implementation. Of course and as previously reported, it is not limited to this embodiment.
  • the tank and its functional elements can be perfectly used on other types of vehicles or devices than an urban sweeper as described above.
  • the means for fixing the tank to the frame may vary, for example, we can consider using a fast loading device, without departing from the scope defined by the claims

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Cleaning In General (AREA)
  • Refuse-Collection Vehicles (AREA)
  • Harvester Elements (AREA)

Description

La présente invention concerne une cuve plus particulièrement destinée à recueillir les déchets lors d'opérations de nettoyage menées au moyen d'un véhicule de voirie motorisé ou non, de type balayeuse urbaine.The present invention relates to a tank more particularly intended to collect the waste during cleaning operations carried out by means of a road vehicle, whether motorized or not, of the urban sweeper type.

Les véhicules de ce type sont généralement composés d'une structure avant destinée au pilotage de l'engin, se prolongeant vers l'arrière par un châssis recevant une cuve prévue pour collecter les déchets prélevés par des moyens de nettoyage situés en général sous le châssis, par l'intermédiaire d'une système d'aspiration et d'une turbine. Un exemple de véhicule de ce type est décrit par exemple dans le document US 4 754 521 .Vehicles of this type are generally composed of a front structure intended to control the craft, extending rearwardly by a frame receiving a tank designed to collect the waste collected by cleaning means generally located under the frame , via a suction system and a turbine. An example of a vehicle of this type is described for example in the document US 4,754,521 .

Dans un véhicule de nettoyage urbain, les déchets présents sur la surface à nettoyer sont dans un premier temps regroupés dans la zone située sensiblement sous le châssis du véhicule au moyen par exemple de brosses latérales avant d'être collectés au travers d'un tuyau d'aspiration, le circuit d'aspiration étant alimenté par une turbine. Cette turbine crée un flux qui a pour effet de permettre le prélèvement des déchets collectés par les brosses et leur transfert au travers d'un conduit d'aspiration jusqu'à la benne ou cuve de collecte, l'air aspiré étant ensuite évacué vers l'extérieur de la cuve.In an urban cleaning vehicle, the waste present on the surface to be cleaned is initially grouped in the zone located substantially under the chassis of the vehicle by means for example of lateral brushes before being collected through a pipe of suction, the suction circuit being powered by a turbine. This turbine creates a flow that has the effect of allowing the collection of waste collected by the brushes and their transfer through a suction duct to the bucket or collection tank, the sucked air being then discharged to the outside the tank.

L'un des problèmes à résoudre concerne la présence de poussière ou de débris dans l'air rejeté.One of the problems to be solved is the presence of dust or debris in the exhaust air.

Diverses solutions ont été proposées pour limiter les rejets en régulant le flux d'air soit par une disposition spécifique des moyens d'aspiration, soit par la configuration de la cuve.Various solutions have been proposed to limit discharges by regulating the air flow either by a specific arrangement of the suction means, or by the configuration of the tank.

La plupart des véhicules ont recours à un positionnement de la turbine sous la cuve du véhicule. Une telle modalité est représentée notamment dans le document US 4 754 521 précité.Most vehicles use a position of the turbine under the tank of the vehicle. Such a modality is represented in particular in the document US 4,754,521 supra.

Cette conception présente un inconvénient majeur. En effet, du fait du positionnement de la turbine sous la cuve de collecte des déchets, il est nécessaire de relier cette turbine à cette cuve par un conduit qui se prolongera jusqu'à l'intérieur de la cuve. De ce fait, le fond de la cuve n'est pas totalement plat en raison de la présence du conduit se prolongeant à l'intérieur, et il peut se poser des problèmes de répartitions inégales des déchets à l'intérieur de la cuve et d'apparition de turbulences non souhaitées, d'où des risques de rejet dans le flux sortant. De surcroît, la portion de conduit réalisée à l'intérieur de la cuve doit se prolonger jusqu'à une hauteur relativement importante pour permettre ensuite une dépose des déchets au fond de la cuve. Un conduit trop court rendrait le dispositif complètement inopérant en provoquant rapidement des phénomènes de colmatage par des particules des déchets prélevés qui tendraient à s'accumuler dans le pourtour immédiat de l'embouchure du conduit, avec là également des risques de rejet importants Un autre mode de réalisation connu consiste à l'inverse à positionner la turbine sur le dessus de la cuve, et plus précisément dans le couvercle de la cuve. Une modalité de ce type est décrite par exemple dans le brevet EP 0750 072 . Cette modalité présente néanmoins divers inconvénients, notamment au regard du centre de gravité de l'ensemble qui se trouve décalé vers le haut, d'où de possibles problèmes de stabilité ou d'équilibre, notamment lorsque le véhicule est en mouvement. Par ailleurs, le positionnement de la turbine en partie supérieure complique le cheminement des conduits puisqu'il faudra prévoir un passage entre l'orifice de collecte des déchets nécessairement situé en partie inférieure du véhicule, sous le châssis, avec une liaison vers la turbine située à l'exact opposé dans la partie supérieure de l'ensemble. L'air insufflé sera projeté vers le haut, d'où des turbulences non souhaitées et des risques de colmatage avec une répartition anarchique des déchets à l'intérieur de la cuve et des risques de rejet extérieur importants. Selon un autre mode de réalisation encore, on connaît des turbines qui sont solidaires de la cuve. Un exemple de ce type est représenté par le document EP 0291844 . Cette modalité présente un inconvénient majeur. En effet, la turbine n'étant pas dissociée de la cuve, il sera nécessaire de faire passer par le point de rotation de la cuve l'ensemble des conduits et tuyauteries, avec des risques élevés de rupture et d'usure prématurée, donc de rejet extérieur.This design has a major disadvantage. Indeed, because of the positioning of the turbine under the waste collection tank, it is necessary to connect the turbine to this vessel by a conduit that will extend to the inside of the tank. Therefore, the bottom of the tank is not completely flat due to the presence of the duct extending inside, and there may arise problems of unequal distribution of waste within the tank and d emergence of undesired turbulence, hence the risk of rejection in the outgoing flow. In addition, the duct portion made inside the tank must extend to a relatively high height to then allow a removal of waste at the bottom of the tank. A too short duct would render the device completely inoperative by rapidly causing clogging phenomena by particles of the collected waste which would tend to accumulate in the immediate periphery of the mouth of the duct, with there also risks of large rejection Another mode known embodiment consists in the opposite to position the turbine on the top of the tank, and more specifically in the tank lid. A modality of this type is described for example in the patent EP 0750 072 . This modality nevertheless has various drawbacks, especially with regard to the center of gravity of the assembly which is offset upward, hence possible problems of stability or balance, especially when the vehicle is moving. Furthermore, the positioning of the turbine in the upper part complicates the routing of the ducts since it will be necessary to provide a passage between the waste collection port necessarily located in the lower part of the vehicle, under the frame, with a connection to the turbine located to the exact opposite in the upper part of the set. The blown air will be projected upwards, resulting in undesirable turbulence and clogging risks with an uncontrolled distribution of waste inside the tank and significant risks of external rejection. According to yet another embodiment, there are known turbines which are integral with the tank. An example of this type is represented by the document EP 0291844 . This modality has a major disadvantage. Indeed, the turbine is not dissociated from the tank, it will be necessary to pass through the point of rotation of the tank all the ducts and pipes, with high risk of rupture and premature wear, so of external rejection.

Enfin, le document FR2912434 décrit une cuve de réception pour déchets prélevés par un véhicule de voirie, associée à des moyens d'aspiration comprenant une turbine et un conduit d'aspiration comportant plusieurs portions tubulaires formant un U. La cuve vient s'enchâsser sur la branche inférieure formée par la portion de tube disposée sous le fond de la cuve. Les deux branches latérales formées par la ou les portions de tube extérieures s'étendent respectivement de part et d'autres de la cuve pour en rejoindre la partie supérieure. Cependant, la cuve selon ce document ne comporte aucun moyen pour assurer la filtration des particules et les séparer de l'air rejeté vers l'extérieur, d'où le risque de rejet de poussières et de corps solides vers l'extérieur.Finally, the document FR2912434 discloses a receiving tank for waste taken by a road vehicle, associated with suction means comprising a turbine and a suction pipe having a plurality of tubular portions forming a U. The tank is engulfed on the lower branch formed by the portion of tube disposed under the bottom of the tank. The two lateral branches formed by the outer tube portion or portions extend respectively on either side of the tank to join the upper part. However, the tank according to this document does not include any means for filtering the particles and separating them from the air discharged to the outside, hence the risk of dust and solids being discharged to the outside.

La présente invention se propose de remédier à ces inconvénients en réalisant une cuve à déchets pour véhicule de voirie qui est indépendante des moyens d'aspiration des déchets et qui comporte des agencements internes pour séparer les particules aspirées de l'air rejeté. Plus particulièrement, la cuve selon l'invention est associée à une turbine d'axe vertical positionnée sous la cuve, ladite turbine ne basculant pas avec la cuve lors des opérations de vidange, et à un conduit d'aspiration extérieur coopérant avec des moyens de filtration et de séparation des particules disposés à l'intérieur de la cuve.The present invention proposes to overcome these disadvantages by providing a refuse tank for a road vehicle which is independent of the waste suction means and which has internal arrangements for separating the particles sucked from the exhaust air. More particularly, the tank according to the invention is associated with a vertical axis turbine positioned under the tank, said turbine not tilting with the tank during the emptying operations, and an external suction duct cooperating with means of filtration and separation of particles disposed within the vessel.

L'invention sera mieux comprise au travers de la description donnée ci-après d'un mode de réalisation possible, et en référence aux figures annexées, et dans lesquelles :

  • la figure 1 est une vue d'ensemble d'un véhicule de voirie équipée d'une cuve selon la présente invention,
  • la figure 2 est une vue de détail de la cuve selon la présente invention,
  • la figure 3 illustre le basculement de la cuve représentée à la figure 2, et
  • la figure 4 est une vue en coupe frontale de la cuve montrant les moyens de filtration et de séparation des particules.
The invention will be better understood through the description given below of a possible embodiment, and with reference to the appended figures, and in which:
  • the figure 1 is an overview of a road vehicle equipped with a tank according to the present invention,
  • the figure 2 is a detailed view of the tank according to the present invention,
  • the figure 3 illustrates the tilting of the tank represented in the figure 2 , and
  • the figure 4 is a front sectional view of the tank showing the filtration and separation means of the particles.

Dans la description qui suit, il sera fait référence à titre d'exemple à une cuve associée à un véhicule de voirie motorisé de type balayeuse urbaine. Bien évidemment, les modalités particulières de la cuve selon l'invention peuvent parfaitement être utilisées en association avec un autre type de véhicule ou de dispositif destiné à l'entretien de surfaces.In the following description, reference will be made by way of example to a tank associated with a motorized urban sweeper type road vehicle. Of course, the particular conditions of the tank according to the invention can perfectly be used in combination with another type of vehicle or device for the maintenance of surfaces.

La figure 1 représente un véhicule de voirie de type classique sur lequel on a disposé une cuve selon la présente invention.The figure 1 represents a conventional type of road vehicle on which a tank according to the present invention has been arranged.

De manière classique, le véhicule est composé d'un châssis (1), qui est ici articulé en deux parties, une partie avant (1a) et une partie arrière (1b). Il sera signalé cependant que la cuve selon l'invention pourrait parfaitement être disposée sur un châssis non articulé.In a conventional manner, the vehicle is composed of a chassis (1), which here is articulated in two parts, a front part (1a) and a rear part (1b). It will be pointed out however that the tank according to the invention could perfectly be arranged on a non-articulated chassis.

La partie avant (1a) du châssis reçoit une cabine (2) à partir de laquelle l'utilisateur peut piloter et diriger le véhicule, et commander les différents accessoires afin de remplir la fonction de nettoyage d'une zone déterminée.The front part (1a) of the frame receives a cabin (2) from which the user can control and steer the vehicle, and control the various accessories to perform the cleaning function of a specific area.

En avant de la cabine (2), dans la partie inférieure du châssis (1) et à proximité du sol, se trouvent les moyens de nettoyage (3) qui sont ici constitués de deux brosses (3a et 3b) montées sur une structure (4) permettant leur déploiement et leur repli.In front of the cabin (2), in the lower part of the frame (1) and close to the ground, are the cleaning means (3) which consist here of two brushes (3a and 3b) mounted on a structure ( 4) allowing their deployment and their withdrawal.

La partie arrière (1b) du châssis reçoit la cuve (5) ainsi que les moyens d'aspiration des déchets prélevés sur le sol qui coopèrent avec la cuve.The rear part (1b) of the chassis receives the tank (5) and the suction means of waste taken from the ground which cooperate with the tank.

Comme le montre la figure 2, la cuve (5) est positionnée sur un cadre (7) composé de deux pièces latérales (17, 17') symétriques en forme de L, disposées chacune à l'extrémité arrière du châssis (1b). Chacune des pièces latérales (17, 17') comporte un bras horizontal fixé au châssis et un bras vertical perpendiculaire au châssis. Les pièces latérales (17) et (17') étant sensiblement symétriques, seule l'une d'entre elle est représentée sur les figures et identifiée sous le numéro 17.As shown in figure 2 , the tank (5) is positioned on a frame (7) consisting of two symmetrical L-shaped side pieces (17, 17 '), each arranged at the rear end of the frame (1b). Each of the side pieces (17, 17 ') has a horizontal arm attached to the frame and a vertical arm perpendicular to the frame. Since the side pieces (17) and (17 ') are substantially symmetrical, only one of them is shown in the figures and identified under the number 17.

L'extrémité supérieure arrière de la cuve (5) est articulée autour d'un axe de rotation (13) reliant les extrémités respectives des bras verticaux des pièces latérales (17, 17').The upper rear end of the tank (5) is articulated around an axis of rotation (13) connecting the respective ends of the vertical arms of the side pieces (17, 17 ').

Les moyens d'aspiration comportent une turbine (6) d'axe vertical qui est montée sur le bras horizontal des pièces latérales (17, 17'). L'extrémité avant de la turbine est encadrée de part et d'autre par des éléments (27) de forme sensiblement triangulaire. Les éléments triangulaires (27) sont montés sur les extrémités respectives des bras horizontaux des pièces latérales (17, 17') du support (7).The suction means comprise a turbine (6) of vertical axis which is mounted on the horizontal arm of the side pieces (17, 17 '). The front end of the turbine is framed on both sides by elements (27) of substantially triangular shape. The triangular elements (27) are mounted on the respective ends of the horizontal arms of the side pieces (17, 17 ') of the support (7).

La paroi extérieure de fond de la cuve (5) comporte un renfort (37) constitué d'une plaque horizontale venant recouvrir partiellement par l'arrière l'extrémité avant de la turbine (6) et disposée en correspondance de la partie d'extrémité de la pièce (27), de manière à protéger ledit fond lorsque la cuve est en position abaissée.The bottom outer wall of the tank (5) comprises a reinforcement (37) consisting of a horizontal plate partially covering the rear end of the front end of the turbine (6) and arranged in correspondence of the end portion of the piece (27), so as to protect said bottom when the tank is in the lowered position.

La cuve (5) est ainsi positionnée au-dessus de la turbine (6), sans pour autant qu'il n'y ait de liaison solidaire entre ladite cuve et ladite turbine, et sans risque d'endommagement de ladite turbine puisque la plaque de renfort (37) protégeant le fond de la cuve (5) repose sur l'extrémité inférieure de la pièce (27) qui est légèrement plus haute que la surface supérieure de la turbine.The tank (5) is thus positioned above the turbine (6), without there being any integral connection between said tank and said turbine, and without risk of damage to said turbine since the plate reinforcement (37) protecting the bottom of the tank (5) rests on the lower end of the piece (27) which is slightly higher than the upper surface of the turbine.

Les moyens d'aspiration comprennent également un conduit d'aspiration (8) coopérant avec la turbine (6), l'extrémité inférieure dudit conduit étant associée à une buse (non représentée) afin de permettre la collecte des déchets ramenés par les brosses (3a, 3b) vers l'axe central du véhicule et l'extrémité supérieure débouchant vers l'intérieur de la cuve (5).The suction means also comprise a suction duct (8) cooperating with the turbine (6), the lower end of said duct being associated with a nozzle (not shown) in order to allow the collection of the waste brought back by the brushes ( 3a, 3b) towards the central axis of the vehicle and the upper end opening towards the inside of the tank (5).

Le conduit (8) est caractérisé en ce qu'il est comporte plusieurs portions tubulaires formant un U. La cuve (5) vient s'enchâsser sur la branche inférieure (8c) formée par la portion de tube disposée sous le fond (5a) de la cuve (5). Les deux branches latérales (8a et 8b) formées par la ou les portions de tube extérieures s'étendent respectivement de part et d'autres de la cuve (5) pour en rejoindre la partie supérieure.The duct (8) is characterized in that it comprises a plurality of tubular portions forming a U. The tank (5) is engulfed on the lower branch (8c) formed by the portion of tube disposed under the bottom (5a) of the tank (5). The two lateral branches (8a and 8b) formed by the outer tube portion or portions respectively extend on each side of the tank (5) to join the upper part.

De ce fait, le conduit (8) suit un parcours à l'extérieur de la cuve (5), en remontant le long de ses parois latérales (5c et 5d), et n'est donc pas positionné en partie à l'intérieur de la cuve comme dans les véhicules de type connu.As a result, the duct (8) follows a path outside the tank (5), going up along its side walls (5c and 5d), and is therefore not positioned partly inside. of the tank as in vehicles of known type.

Selon un mode de réalisation préférentiel, le conduit (8) est réalisé d'une seule pièce, de telle sorte qu'il n'est pas nécessaire d'utiliser des moyens de raccordement pour assurer la liaison entre, d'une part les différentes sections de tube qui le composent, et d'autre part avec la buse et la cuve (5), les déchets suivant un trajet unique sans risque de colmatage intérieur.According to a preferred embodiment, the conduit (8) is made in one piece, so that it is not necessary to use connecting means to ensure the connection between, on the one hand, the different sections of tube that compose it, and secondly with the nozzle and the tank (5), the waste following a single path without risk of internal clogging.

La figure 4 illustre plus particulièrement l'agencement intérieur de la cuve (5) et les moyens associés au conduit d'aspiration (8) pour assurer la filtration des particules et les séparer de l'air rejeté vers l'extérieur.The figure 4 illustrates more particularly the interior arrangement of the tank (5) and the means associated with the suction duct (8) for filtering the particles and separating them from the exhaust air to the outside.

On montre ici une coupe schématique de la cuve (5) selon son axe transversal. Comme détaillé ci-dessus, la turbine (6) est disposée sous la paroi de fond (5a) de la cuve (5) qui est plate. De part et d'autre de la cuve (5) se trouvent les branches latérales (8a et 8b) du conduit d'aspiration (8), lesquelles communiquent chacune avec l'intérieur de la cuve.We show here a schematic section of the tank (5) along its transverse axis. As detailed above, the turbine (6) is disposed under the bottom wall (5a) of the tank (5) which is flat. On either side of the tank (5) are the lateral branches (8a and 8b) of the suction duct (8), which each communicate with the inside of the tank.

Les moyens de filtration et de séparation des poussières sont composés d'un déflecteur central (20) associé à des grilles latérales (21a, 21b).The filtration and dust separation means are composed of a central deflector (20) associated with lateral grids (21a, 21b).

Le déflecteur (20) est constitué d'une pièce en forme de cône tronqué, qui est positionnée contre la paroi supérieure de la cuve (5), à égale distance des parois latérales (5c et 5d), et en correspondance de la zone délimitée par les parties supérieures respectives des branches latérales (8a et 8b) du conduit d'aspiration (8). Plus précisément, le déflecteur (20) comporte une base plane (20a) qui est fixée, par exemple au moyen de rivets, contre la paroi supérieure (5b) de la cuve (5). La largeur de la base plane (20a) est sensiblement égale à un quart de la largeur de la cuve (5). La longueur de la base plane (20a) est sensiblement égale au diamètre du conduit (8) en correspondance duquel elle est positionnée.The deflector (20) consists of a truncated cone-shaped piece, which is positioned against the upper wall of the tank (5), equidistant from the side walls (5c and 5d), and in correspondence of the delimited area by the respective upper parts of the lateral branches (8a and 8b) of the suction duct (8). More specifically, the deflector (20) comprises a flat base (20a) which is fixed, for example by means of rivets, against the upper wall (5b) of the tank (5). The width of the planar base (20a) is substantially equal to a quarter of the width of the tank (5). The length of the plane base (20a) is substantially equal to the diameter of the conduit (8) in correspondence of which it is positioned.

Les deux extrémités de la base plane (20a) situées en regard des parois latérales (5c et 5d) de la cuve (5) sont chacune prolongée par une plaque rigide (20b, 20c), définissant un bord latéral dans le plan perpendiculaire à celui de ladite base (20a). La longueur des plaques rigides (20b et 20c) peut varier, mais de préférence sera sensiblement égale à la longueur de la base plane (20a).The two ends of the flat base (20a) facing the side walls (5c and 5d) of the tank (5) are each extended by a rigid plate (20b, 20c), defining a lateral edge in the plane perpendicular to that of said base (20a). The length of the rigid plates (20b and 20c) may vary, but preferably will be substantially equal to the length of the planar base (20a).

De chaque côté du déflecteur (20), on trouve une grille (21), reliée chacune par une extrémité à la base plane (20a) du déflecteur, et par l'autre extrémité au conduit d'aspiration (8). De manière avantageuse, les grilles (21a, 21b) peuvent être revêtues d'un matériau anti-adhésif, ou recevoir un traitement de surface anti-adhésif.On each side of the deflector (20), there is a grid (21), each connected at one end to the flat base (20a) of the deflector, and at the other end to the suction duct (8). Advantageously, the grids (21a, 21b) may be coated with a release material, or receive a release-resistant surface treatment.

Les grilles (21a et 21b) ont une forme en accordéon, ce qui permet d'augmenter la surface d'aspiration et d'éviter l'adhérence d'objets légers présents dans l'air aspiré. La combinaison du déflecteur (20) et des grilles latérales (21a, 21b) en accordéon permet de créer à l'intérieur de la cuve (5) un flux d'air tourbillonnant qui facilite la séparation entre la poussière et les déchets qui sont amené par gravité à se déposer sur le fond de la cuve. On réduit ainsi d'une façon importante le rejet de poussière et de corps solide vers l'extérieur.The grids (21a and 21b) have an accordion shape, which increases the suction surface and prevent the adherence of light objects in the air sucked. The combination of the baffle (20) and the lateral grids (21a, 21b) accordion makes it possible to create inside the tank (5) a swirling air flow which facilitates the separation between the dust and the waste which is brought by gravity to be deposited on the bottom of the tank. This significantly reduces the release of dust and solid bodies to the outside.

Ces modalités présentent de très nombreux avantages qui permettent de distinguer la présente invention des solutions connues de l'art antérieur.These methods have many advantages that distinguish the present invention solutions known from the prior art.

Le positionnement extérieur du conduit d'aspiration permet d'utiliser une cuve présentant un fond parfaitement plat.The external positioning of the suction duct makes it possible to use a tank having a perfectly flat bottom.

Dans les dispositifs connus de l'art antérieur, ceci n'était pas possible puisqu'il était au moins nécessaire de prévoir une excroissance au niveau de la zone de pénétration du conduit d'aspiration à l'intérieur de la cuve, et également en raison de la présence des radiateurs, la turbine étant solidaire du reste de la cuve. Cette contrainte est supprimée par la désolidarisation de la turbine, de telle sorte que le fond de la cuve (5) peut être parfaitement plat, ce qui procure de nombreuses améliorations.In the devices known from the prior art, this was not possible since it was at least necessary to provide an excrescence in the area of penetration of the suction duct inside the tank, and also in because of the presence of the radiators, the turbine being secured to the rest of the tank. This constraint is removed by the separation of the turbine, so that the bottom of the tank (5) can be perfectly flat, which provides many improvements.

Egalement, l'absence d'excroissances ou aspérités sur le fond de la cuve permet de prévenir tous risques d'accumulation irrégulière des déchets qui sont prélevés et acheminés vers la cuve de collecte au travers du conduitAlso, the absence of excrescences or asperities on the bottom of the tank makes it possible to prevent any risk of irregular accumulation of the waste which is collected and conveyed to the collecting tank through the conduit.

Par ailleurs, la circulation de l'air et les flux qui sont générés au travers de la turbine sont beaucoup plus réguliers puisqu'aucun élément saillant sur le fond de la cuve ne vient perturber la circulation des flux ni provoquer une quelconque déviation ou inversion. Enfin, les coûts de fabrication se trouvent sensiblement réduits.Moreover, the flow of air and the flows that are generated through the turbine are much more regular since no element protruding from the bottom of the tank disturbs the flow flow nor cause any deviation or inversion. Finally, manufacturing costs are significantly reduced.

La cuve selon l'invention présente une autre amélioration à raison de la désolidarisation de la turbine d'aspiration.The tank according to the invention has another improvement due to the separation of the suction turbine.

Lorsque la cuve est actionnée pour assurer la vidange des déchets qui ont été collectés, seule la partie formant contenant se déplacera pour basculer vers l'arrière et assurer le vidage, la turbine et le conduit ne bougeant pas.When the tank is actuated to drain the waste that has been collected, only the container portion will move to tilt backward and empty, turbine and conduit not moving.

La turbine reste en place sur le châssis du véhicule et le conduit d'aspiration extérieur suit simplement le mouvement de la cuve, puisqu'il n'est pas nécessaire de le désolidariser.The turbine remains in place on the chassis of the vehicle and the external suction pipe simply follows the movement of the tank, since it is not necessary to separate it.

Ceci permet entre autre d'assurer l'automatisation de l'ouverture du couvercle (9) de la cuve de collecte en utilisant des moyens simples, qui seront de préférence constitués par des câbles ou similaires.This makes it possible, among other things, to automate the opening of the lid (9) of the collection vessel by means of simple means, which will preferably consist of cables or the like.

Ainsi qu'il ressort de la figure (3), la cuve (5) peut basculer sous l'action d'un vérin (10) reliant le cadre (7) à l'arrière de la cuve, pour commander soit le relèvement de la cuve vers une position de vidange verticale, soit son retour vers sa position d'utilisation horizontale.As is apparent from the figure (3 ), the tank (5) can tilt under the action of a jack (10) connecting the frame (7) to the rear of the tank, to control either the raising of the tank to a vertical drain position, or his return to his position of horizontal use.

Des moyens de traction non rigides (11) sont disposés sur au moins un des côtés de la cuve (5) et sont reliés par une de leur extrémité aux bras supérieurs des éléments latéraux (17, 17') du cadre (7), sous l'axe (13), et par l'autre extrémité à un bras de fixation (12) s'étendant à partir du couvercle (9).Non-rigid traction means (11) are arranged on at least one of the sides of the tank (5) and are connected by one of their ends to the upper arms of the lateral elements (17, 17 ') of the frame (7), under the axis (13), and at the other end to an attachment arm (12) extending from the cover (9).

Le couvercle (9) sera alors repoussé vers le haut sous l'effet de la traction exercée par les moyens de traction (11), et se trouvera maintenu en position ouverture au fur et à mesure que la cuve (5) basculera vers l'arrière, mais sans risque de fermeture inopinée.The lid (9) will then be pushed upwards under the effect of the traction exerted by the traction means (11), and will be held in the open position as the bowl (5) tilts towards the rear, but without risk of unexpected closure.

Ceci permet d'assurer le vidage rapide et facile de la cuve de collecte, sans avoir à effectuer ni manipulation complexe ni surtout une dépose quelconque de la cuve ou de partie de cette cuve.This ensures quick and easy emptying of the collection tank, without having to perform complex handling or especially any removal of the tank or part of the tank.

A l'inverse, lorsque la cuve redescend pour reprendre sa position d'origine sur la partie arrière du châssis du véhicule, la tension exercée sur les moyens de traction (11) latéraux se relâche ce qui provoque automatiquement la fermeture progressive du couvercle (9).Conversely, when the tank descends to resume its original position on the rear portion of the vehicle frame, the tension exerted on the lateral traction means (11) is released which automatically causes the progressive closure of the cover (9). ).

Cette modalité de vidange de la cuve selon l'invention se réalise au moyen d'éléments particulièrement peu compliqués et donc peu coûteux et en tous cas beaucoup plus simples d'utilisation que les dispositifs hydrauliques qui équipent habituellement les cuves de type connu.This method of emptying the tank according to the invention is achieved by means of particularly uncomplicated elements and therefore inexpensive and in any case much easier to use than the hydraulic devices that usually equip tanks of known type.

Selon une forme de réalisation avantageuse, les moyens de traction (11) peuvent être constitués de câbles.According to an advantageous embodiment, the traction means (11) may consist of cables.

Il est à noter que l'utilisation de câbles pour assurer cette fonction d'ouverture et de fermeture automatisée permet de conserver une certaine souplesse et donc une marge de manoeuvre, si pour une raison quelconque le mouvement de la cuve se trouvait contrarié lors des opérations de bascule, ce qui ne serait pas le cas si des tiges rigides étaient utilisées pour réaliser des opérations d'ouverture ou de fermeture.It should be noted that the use of cables to provide this automatic opening and closing function makes it possible to maintain a certain flexibility and therefore a margin of maneuver, if for any reason the movement of the tank is upset during operations. of rocker, which would not be the case if rigid rods were used to perform opening or closing operations.

La modalité proposée permet par ailleurs d'assurer une ouverture totale à 90° du couvercle, ce qui permet donc de vidanger dans les meilleures conditions possibles.The proposed modality also allows to ensure a total opening to 90 ° of the lid, which allows to drain in the best possible conditions.

La présente invention a été décrite ci-dessus par rapport à un mode préférentiel de mise en oeuvre. Bien évidemment et comme signalé auparavant, elle n'est pas limitée à ce mode de réalisation. En particulier, la cuve et ses éléments fonctionnels pourront parfaitement être utilisés sur d'autres types de véhicules ou de dispositif qu'une balayeuse urbaine telle que décrite ci-dessus. De même, les moyens de fixation de la cuve au châssis pourront varier, ainsi par exemple, on pourra envisager d'utiliser un dispositif de chargement rapide, sans que l'on sorte du cadre défini par les revendicationsThe present invention has been described above with respect to a preferred mode of implementation. Of course and as previously reported, it is not limited to this embodiment. In particular, the tank and its functional elements can be perfectly used on other types of vehicles or devices than an urban sweeper as described above. Similarly, the means for fixing the tank to the frame may vary, for example, we can consider using a fast loading device, without departing from the scope defined by the claims

Claims (10)

  1. Tank for receiving waste collected by a road vehicle of the type comprised of a chassis receiving a cabin, a frame (7) having two substantially symmetrical L-shaped lateral pieces (17,17') housing said tank (5) and an actuator (10) connecting the rear of the tank (5) and the frame (7) to pivot said tank (5), and cleaning means with suction means comprising a turbine (6) and a U-shaped suction duct (8), the tank (5) being arranged on a lower branch formed by the horizontal tubular portion of the suction duct and between lateral branches (8a, 8b) formed by the vertical tubular portions of said duct, said lateral branches extending respectively on both sides and along lateral walls (5c, 5d) of the tank for rejoining the upper part,
    characterised in that means for filtration and separation of particles cooperating with the lateral branches (8a, 8b) are arranged inside the tank (5).
  2. Tank according to claim 1, characterised in that the means for filtration and separation of particles comprise a central deflector arranged against the upper wall of the tank (5), at equal distance of the lateral walls (5c, 5d) and provided in correspondence to the area bounded by the respective upper sections of the lateral branches (8a and 8b) of the suction duct (8), associated with side grids (21a and 21b).
  3. Tank according to claim 2, characterised in that the deflector (20) is formed by an element with a flat base surface (20a), having respective end sections facing the lateral walls (5c, 5d) of the tank (5), each of them being extended by a rigid plate (20b, 20c) to define a side edge in the plane perpendicular to the plane of said base (20a).
  4. Tank according to claim 3, characterised in that the width of the flat base (20a) substantially equals to one quarter of the width of the tank (5).
  5. Tank according to claim 3 or claim 4, characterised in that the length of the flat base (20a) substantially equals to the diameter of the duct (8) arranged in correspondence.
  6. Tank according to one of claims 2 to 5, characterised in that each one of the grids (21a, 21b) is connected by one end to the flat base (20a) of the deflector, and by the other end to the suction duct (8).
  7. Tank according to one of claims 2 to 6, characterised in that the grids (21a, 21b) are coated with an anti-adhesive material or are supplied with an anti-adhesion surface treatment.
  8. Tank according to one of claims 2 to 7, characterised in that the grids (21a, 21b) are supplied in an accordion shape.
  9. Tank according one of the previous claims, characterised in that the suction duct (8) is one-part made.
  10. Tank according one of the previous claims, characterised in that it has a flat bottom.
EP10174081.9A 2009-09-14 2010-08-26 Tank for receiving waste collected by a road vehicle Not-in-force EP2299000B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0904363A FR2950084B1 (en) 2009-09-14 2009-09-14 RECEPTION TANK FOR WASTE FROM A ROAD VEHICLE COMPRISING MEANS FOR FILTRATION AND SEPARATION OF THE ASPIRED PARTICLES

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EP2299000A2 EP2299000A2 (en) 2011-03-23
EP2299000A3 EP2299000A3 (en) 2013-04-03
EP2299000B1 true EP2299000B1 (en) 2017-03-15

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FR (1) FR2950084B1 (en)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
CN104314028A (en) * 2014-09-27 2015-01-28 赵夫超 Raised dust absorption device for muck truck
CN106081446B (en) * 2016-07-06 2019-01-08 长治清华机械厂 Landfill leachate collects drainage device
CH715503B1 (en) 2019-05-13 2020-05-15 Bucher Municipal Ag Self-propelled sweeper.
CN113086459B (en) * 2021-03-26 2022-10-28 嘉兴市嘉环园林工程有限公司 Garbage clearing and transporting system
FR3133203B1 (en) 2022-03-07 2024-04-12 Olivarius Man Services Ag ROAD VEHICLE TANK COMPRISING MEANS OF SUCTION AND EVACUATION OF THE AIR BLOWN BY A TURBINE

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Publication number Priority date Publication date Assignee Title
IT1195887B (en) 1986-07-31 1988-10-27 Dulevo Spa ROAD SWEEPER MACHINE FOR WASTE COLLECTION
IT1205012B (en) 1987-05-19 1989-03-10 Dulevo Spa ROAD CLEANING MACHINE FOR THE COLLECTION AND TRANSPORT OF WASTE
EP0750072B1 (en) 1995-06-19 2001-03-28 Mathieu Yno High performance compact automotive urban sweeper with inverse mounted turbine
GB0426710D0 (en) * 2004-12-06 2005-01-12 Applied Sweepers Ltd Dust control system
ITPR20050012A1 (en) * 2005-03-30 2006-09-30 M Salute Ambientale Srl ROAD SWEEPER MACHINE WITH FILTERING MECHANICAL SUCTION SYSTEM FOR WASTE COLLECTION.
ES2306071T3 (en) * 2005-10-07 2008-11-01 Dulevo International S.P.A. CLEANING UNIT OF STREETS AND SIMILAR.
FR2912434B1 (en) * 2007-02-14 2011-07-01 Jungo Voirie RECEPTION TANK FOR WASTE FROM A ROAD VEHICLE

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FR2950084A1 (en) 2011-03-18
EP2299000A2 (en) 2011-03-23
EP2299000A3 (en) 2013-04-03
FR2950084B1 (en) 2011-09-30

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