WO1986002394A1 - Suction duct on a litter collection vehicle - Google Patents

Suction duct on a litter collection vehicle Download PDF

Info

Publication number
WO1986002394A1
WO1986002394A1 PCT/EP1985/000541 EP8500541W WO8602394A1 WO 1986002394 A1 WO1986002394 A1 WO 1986002394A1 EP 8500541 W EP8500541 W EP 8500541W WO 8602394 A1 WO8602394 A1 WO 8602394A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction shaft
flap
suction
air
shaft according
Prior art date
Application number
PCT/EP1985/000541
Other languages
German (de)
French (fr)
Inventor
Alfred Schmidt
Herbert Ganzmann
Original Assignee
Ing. Alfred Schmidt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ing. Alfred Schmidt Gmbh filed Critical Ing. Alfred Schmidt Gmbh
Publication of WO1986002394A1 publication Critical patent/WO1986002394A1/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
    • E01H1/0836—Apparatus dislodging all of the dirt by suction ; Suction nozzles

Definitions

  • the invention relates to a suction shaft on a sweeping vehicle, which is provided adjacent to its suction opening on the rear wall with an air guiding device and on the front wall with a coarse dirt flap.
  • Devices of this type are used in particular for vehicles for street cleaning.
  • the suction opening of the suction shaft is guided tightly over the street surface, so that leaves, paper, tin cans or the like lying on the street. captured by an air stream and transported through the suction shaft into a dirt hopper.
  • the effective one is to achieve a high and uniform suction effect Airflow guidance is important.
  • a known suction shaft (German Patent 24 46728) has an extended rear wall at the lower end to form an air guiding device.
  • This air guiding device which is connected in one piece with the suction shaft, brings with it the danger of being damaged or clogged, especially when driving over bulky obstacles such as manhole covers or the like lying on the street.
  • the entire suction shaft can be adjusted in height by means of screwing devices. Since these can only be operated manually, a considerable amount of work is required each time they are adapted to different sized sweepings.
  • the invention has for its object to provide a suction shaft avoiding the disadvantages of the above-mentioned prior art, the suction opening of which can be quickly and easily adapted to different sized debris parts without the entire suction shaft being adjusted in its height ⁇ must.
  • a particularly effective and rational suction operation is to be achieved and the risk of damage to the suction shaft is largely avoided.
  • the air guiding device is a loosely supported air guiding flap, that this and also the coarse dirt flap by lifting cylinders and / or
  • Damping elements are movably connected to the suction shaft or an associated support frame and that
  • the air guide flap is fixedly connected to at least one swivel arm which is articulated on the suction shaft or support frame above the air guide flap and opposite it in the direction of the front wall.
  • the air guiding and coarse dirt flaps are movably suspended on the suction shaft housing or on an associated support frame and with damping elements, e.g. Springs provided with gas springs or the like, or actuable by means of active elements, which can be pneumatic or hydraulic cylinders.
  • damping elements e.g. Springs provided with gas springs or the like
  • active elements which can be pneumatic or hydraulic cylinders.
  • the use of active actuating cylinders is particularly advantageous because they can perform lifting functions as well as have damping properties and can also be remotely controlled. The last-mentioned property in particular enables the flaps to be raised quickly when bulky obstacles occur.
  • the flaps are completely lowered, ie in the next position to the sweeping surface, so that they lie directly on the outer sides of the front and rear walls of the suction shaft.
  • the seal can be further improved by coating one or both contact surfaces with rubber or the like material.
  • the coating is expediently designed such that there are no flow obstacles, such as shadow zones, along the transition area from the air guide flap to the rear wall. If the cylinders are in the depressurized state with the flaps lowered, the flaps can be pushed up by obstacles, since this is not impeded by a counterpressure of the actuating cylinders. This further reduces the risk of damage to the suction shaft with the flaps installed therein.
  • the invention remedies that the movement of the air guide flap is still guided by specially designed swivel arms.
  • the fulcrum of the swivel arms is mounted in such a way that the air guide flap lifts upwards when swiveled backwards.
  • additional devices e.g. Elongated holes.
  • their installation on the suction shaft can be precisely positioned.
  • the coarse dirt flap on the front wall of the suction shaft is particularly exposed to the risk of collision with bulky sweepings during sweeping special attention should be paid to the sequence of their movements. Accordingly, according to In a particularly advantageous variant of the invention, the coarse dirt flap is not pivoted upward in a circular arc, but rather is pulled upward approximately parallel to the front wall of the suction duct.
  • Such a 3-way guide can advantageously be implemented by means of an articulated lever guide or the like between the coarse dirt flap and the support frame and / or a running rail guide.
  • the air guiding surfaces in the air guiding flap, the contact surfaces of the respective flaps and / or the inner walls of the suction shaft can be coated with rubber or the like material. This dampens impacts from debris lying or flying around on the street; In addition, the durability of the entire device according to the invention is increased.
  • the coarse dirt flap can be made in its entirety from resiliently elastic material, for example synthetic rubber. As a result, even in its lower position, it can overcome obstacles on the road surface without being destroyed.
  • FIG. 1 is a schematic side view of a suction shaft attached to a sweeper
  • FIG. 2 is a side elevation of a suction shaft according to the invention
  • Fig. 3 shows the suction shaft. Fig. 1 with pulled up
  • Flaps, Fig. 4 in side elevation an enlarged partial section of an alternative embodiment of the front wall of the suction shaft.
  • the suction shaft 1 is arranged on a truck 40, for example on a Unimog, between its front wheel (not shown) and its rear wheel 41 on the right-hand side as viewed in the direction of travel F.
  • the suction shaft 1 essentially consists of the coarse dirt flap 6, the air guide flap 4 and the lifting cylinders 13, 14 and is connected to a feed 42 to a dirt hopper (not shown).
  • the suction shaft 1 is held in a support frame 43 indicated schematically, which is provided with a drawbar 44 directed essentially parallel to the direction of travel F.
  • the front end of the drawbar 44 is articulated on a flange 45 fastened to the chassis of the truck 40.
  • On both sides of the suction shaft 1 and the support frame 43 there is an impeller 47 rolling on the sweeping surface 46, only the right impeller 47 being drawn for the sake of clarity.
  • Ge. 2 is the suction shaft 1 moved in the direction of arrow P parallel to the floor surface at its lower end, where the suction opening 2 is located, with an air flap 4 resting on its rear wall 3 and with a coarse dirt flap 6 resting on its front wall 5 .
  • the contact surfaces 7 or 8 of the air guide flap 4 or coarse dirt flap 6 touching the outer walls of the suction shaft 1 can each be coated with a rubber cover.
  • the walls of the suction shaft 1 are formed by a housing 9 made of sheet steel and are lined on their inner sides with a rubber pad 10. The rubber pads 10 serve to protect the housing 9.
  • the air guide flap 4 or coarse dirt flap 6 are each pivotally connected to a rear lifting cylinder 13 or a front lifting cylinder 14 via articulation points 11, 12.
  • the rear lifting cylinder 13 is articulated at the pivot point 15, the front lifting cylinder 14 at the pivot point 16 on respective supports 17, 18 of a support frame (not shown).
  • the air guide flap has a plate 19 on both sides with an approximately triangular profile.
  • the lower ends of swivel arms 22 are firmly screwed to this by means of screw connections (not shown) leading through elongated holes 20, 21.
  • the elongated holes 20, 21 serve at the same time for fine adjustment of the height and inclination of the air guide flap 4.
  • the upper ends of the swivel arms 22 are rotatably supported at pivot points 36 above the air guide flap 4 and offset horizontally from the latter in the direction of the front wall 5. Due to this arrangement, the air guide flap can be swung out to the rear.
  • the air guide flap 4 is formed, similar to the walls of the suction shaft 1, from a steel / rubber composite construction made from a sheet steel profile 37 with a rubber contactor 38.
  • the steel sheet profile 37 is further stiffened by ribs 24 on the rear side.
  • the contact surface 7 of the air guide flap 4 is essentially formed by a stop element 25 with an approximately rectangular profile.
  • FIG. 3 shows the air guide flap 4 and the coarse dirt flap 6 in their raised position. Both are pulled by the rear lifting cylinder 13 or front lifting cylinder 14 in a pivoting movement upwards, the coarse dirt flap 6 in one
  • Fig. 4 no direct connection to the front wall 5 of the suction shaft 1 is provided for the coarse dirt flap 6.
  • the range of motion of the coarse dirt flap 6 is determined by two guide rods 27, 28 of different lengths, the upper guide rod 28 being longer than the lower guide rod 27.
  • Their ends on the flap side are rotatably mounted on the coarse dirt flap 6 in articulation points 29, 30; the other ends of the guide rods 27, 28 are articulated in articulation points 31, 32, which are provided on a support 33 belonging to the support frame.
  • the movement sequence of the coarse dirt flap 6 results from the guideway 34 of its upper articulation points 29 and the guideway 23 of its lower articulation points 30.
  • the suction height can be varied in a range from approximately 30 to 100 mm in the specific exemplary embodiment.

Abstract

A suction duct (1) for collecting litter, which on its lower suction opening (2) has an air flow flap (4) and a coarse litter flap (6). The coarse litter flap (6) and air flow flap (4) can be operated by hydraulic or pneumatic jacks (13, 14) and/or are equipped with shock-absorbing elements.

Description

Saugschacht an einem KehrfahrzeugSuction shaft on a sweeper
Die Erfindung betrifft einen Saugschacht an einem Kehr¬ fahrzeug, der angrenzend an seine Saugöffnung an der Rückwand mit einer Luftleiteinrichtung und an der Vor¬ derwand mit einer Grobschmutzklappe versehen ist.The invention relates to a suction shaft on a sweeping vehicle, which is provided adjacent to its suction opening on the rear wall with an air guiding device and on the front wall with a coarse dirt flap.
Derartige Vorrichtungen-werden insbesondere bei Fahr¬ zeugen zur Straßenreinigung eingesetzt. Die Saugöffnung des Saugschachts wird dabei dicht über die Straßenober¬ fläche geführt, so daß auf der Straße liegendes Laub, Papier, Blechdosen od. dgl . von einem Luftstrom erfaßt und durch den Saugschacht in einen Kehrgutbehälter befördert werden. Zur Erzielung einer hohen und gleich¬ mäßigen Saugwirkung ist neben dem Abstand der Saugöff¬ nung von der Straßenoberfläche noch die effektive Führung des Luftstromes von Bedeutung.Devices of this type are used in particular for vehicles for street cleaning. The suction opening of the suction shaft is guided tightly over the street surface, so that leaves, paper, tin cans or the like lying on the street. captured by an air stream and transported through the suction shaft into a dirt hopper. In addition to the distance of the suction opening from the road surface, the effective one is to achieve a high and uniform suction effect Airflow guidance is important.
Ein bekannter Saugschacht (Deutsche Patentschrift 24 46728) besitzt eine am unteren Ende unter Ausbildung einer Luftleitvorrichtung verl ngerte Rückwand. Diese mit dem Saugschacht einstückig verbundene Luftleitvor¬ richtung bringt vor allem beim Überfahren auf der Straße liegender , sperriger Hindernisse wie Kanal- deckel od. dgl. die Gefahr mit sich, beschädigt zu werden oder zu verstopfen.A known suction shaft (German Patent 24 46728) has an extended rear wall at the lower end to form an air guiding device. This air guiding device, which is connected in one piece with the suction shaft, brings with it the danger of being damaged or clogged, especially when driving over bulky obstacles such as manhole covers or the like lying on the street.
Bei einem anderen bekannten Saugschacht (GB-PS 847 709) der eingangs genannten Art ist eine etwa V-förmige Luftleitvorrichtung an der Rückwand des Saugschachts befestigt. Eine die beiden Schenkel der Luftleitvor¬ richtung verbindende Biegung ragt allerdings etwas in die Saugöffnung hinein und verkleinert dadurch den für den Luftdurchsatz wirksamen Eintrittquerschnitt; mithin können sperrige Kehrgutteile , z.B. Flaschen, Dosen und dgl. , nicht mehr oder nur erschwert durch¬ treten. Auch bildet sich im Bereich zwischen der Rück¬ wand und dieser Biegung bezüglich der Luftströmung eine Schattenzone, wo Luftwirbel auftreten und sich Kehrgut ansammelt. Um den Abstand der Luftleitvor- richtung von der Kehrfläche zu verändern, muß der In another known suction shaft (GB-PS 847 709) of the type mentioned, an approximately V-shaped air guide device is attached to the rear wall of the suction shaft. However, a bend connecting the two legs of the air guiding device protrudes somewhat into the suction opening and thereby reduces the inlet cross-section effective for the air throughput; Bulky sweepings, for example bottles, cans and the like, can therefore no longer pass through or only with difficulty. A shadow zone also forms in the area between the rear wall and this bend with respect to the air flow, where air vortices occur and debris accumulates. To change the distance of the air guiding device from the sweeping surface, the
gesamte Saugschacht in seiner Höhe mittels Schraubvor¬ richtungen verstellt werden. Da diese lediglich manuell betätigbar sind, ist bei jeder Anpassung an unter¬ schiedlich große Kehrgutteile ein beträchtlicher Ar- beitsaufwand notwendig.the entire suction shaft can be adjusted in height by means of screwing devices. Since these can only be operated manually, a considerable amount of work is required each time they are adapted to different sized sweepings.
Der Erfindung liegt die Aufgabe zugrunde, unter Ver¬ meidung der Nachteile des oben genannten Standes der Technik einen Saugschacht zu schaffen, dessen Saug- Öffnung an unterschiedlich große Kehrgutteile rasch und leicht angepaßt werden kann, ohne daß dabei der gesamte Saugschacht in seiner Höhenlage verstellt wer¬ den muß. Dabei soll ein besonders wirksamer und ratio¬ neller Saugbetrieb erreicht und die Gefahr von Beschä- digungen des Saugschachtes weitgehend vermieden werden.The invention has for its object to provide a suction shaft avoiding the disadvantages of the above-mentioned prior art, the suction opening of which can be quickly and easily adapted to different sized debris parts without the entire suction shaft being adjusted in its height ¬ must. A particularly effective and rational suction operation is to be achieved and the risk of damage to the suction shaft is largely avoided.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Luftleiteinrichtung eine lose am Saugschacht abgestützte Luftleitklappe ist, daß diese und auch die Grobschmutzklappe durch Hubzylinder und /oderThis object is achieved in that the air guiding device is a loosely supported air guiding flap, that this and also the coarse dirt flap by lifting cylinders and / or
Dämpfungselemente mit dem Saugschacht oder einem dazu¬ gehörigen Tragrahmen beweglich verbunden sind und daß Damping elements are movably connected to the suction shaft or an associated support frame and that
die Luftleitklappe mit wenigstens einem Schwenkarm fest verbunden ist, der an Saugschacht oder Tragrahmen oberhalb der Luftleitklappe und dergegenüber in Rich¬ tung Vorderwand versetzt angelenkt ist.the air guide flap is fixedly connected to at least one swivel arm which is articulated on the suction shaft or support frame above the air guide flap and opposite it in the direction of the front wall.
Die Luftleit- und Grobschmutzklappen sind am Saug¬ schachtgehäuse oder an einem dazugehörigen Tragrahmen beweglich aufgehängt und mit Dämpfungselementen, z.B. Federn Gasfedern od. dgl. versehen, oder mittels aktiver Elemente, das können Pneumatik- oder Hydraulik¬ zylinder sein, betätigbar. Die Verwendung von aktiven StellZylindern ist besonders vorteilhaft, da diese sowohl Hebefunktionen durchführen können, als auch - Dämpfungseigenschaften besitzen und überdies fern- steuerbar sind. Insbesondere letzt genannte Eigenschaft ermöglicht ein schnelles Anheben der Klappen beim Auf¬ treten sperriger Hindernisse.The air guiding and coarse dirt flaps are movably suspended on the suction shaft housing or on an associated support frame and with damping elements, e.g. Springs provided with gas springs or the like, or actuable by means of active elements, which can be pneumatic or hydraulic cylinders. The use of active actuating cylinders is particularly advantageous because they can perform lifting functions as well as have damping properties and can also be remotely controlled. The last-mentioned property in particular enables the flaps to be raised quickly when bulky obstacles occur.
In der normalen Arbeitsstellung sind die Klappen voll- ständig abgesenkt, d.h. in nächs.ter Stellung zur Kehr¬ fläche, so daß sie direkt an den Außenseiten der Vor¬ der- bzw. Rückwand des Saugschachts dichtend anliegen. Die Abdichtung läßt sich noch dadurch verbessern, daß eine oder beide Anlagefl chen mit Gummi od. dgl. Werk- stoff beschichtet sind. Die Beschichtung ist dabei zweckmäßigerweise derart ausgebildet, daß längs des Übergangsbereichs von der Luftleitklappe zur Rückwand keine Strömungshindernisse wie z.B. Schattenzonen ent¬ stehen. Befinden sich die Zylinder bei abgesenkten Klappen im drucklosen Zustand so ist ein Hochdrücken der Klap¬ pen durch Hindernisse möglich, da dies nicht durch einen Gegendruck der StellZylinder behindert wird. Dadurch wird die Gefahr von Beschädigungen des Saug¬ schachts mit den darin angebrachten Klappen weiter vermindert.In the normal working position, the flaps are completely lowered, ie in the next position to the sweeping surface, so that they lie directly on the outer sides of the front and rear walls of the suction shaft. The seal can be further improved by coating one or both contact surfaces with rubber or the like material. The coating is expediently designed such that there are no flow obstacles, such as shadow zones, along the transition area from the air guide flap to the rear wall. If the cylinders are in the depressurized state with the flaps lowered, the flaps can be pushed up by obstacles, since this is not impeded by a counterpressure of the actuating cylinders. This further reduces the risk of damage to the suction shaft with the flaps installed therein.
Beim Betätigen von Luftleitvorrichtungen besteht allge- mein das Problem, daß bei ihrem Ausschwenken die Vor¬ derkante den Boden streift oder an diesem hängen blei¬ ben kann. Hier schafft die Erfindung dadurch Abhilfe, daß die Bewegung der Luftleitklappe noch durch be¬ sonders ausgebildete Schwenkarme geführt wird. Der Drehpunkt der Schwenkarme ist dabei derart gelagert, daß die Luftleitklappe beim Verschwenken nach hinten oben abhebt. Weiter ist es zweckmäßig, zur Feineinstel¬ lung der Höhen und Seitenlage der Luftleitklappe diese noch mit weiteren Einrichtungen, z.B. Langlöchern, zu versehen. Außerdem kann damit deren Anlage am Saug¬ schacht genau ein ustiert werden.When actuating air guiding devices there is generally the problem that when they are pivoted out, the leading edge brushes against the floor or can get caught on it. Here, the invention remedies that the movement of the air guide flap is still guided by specially designed swivel arms. The fulcrum of the swivel arms is mounted in such a way that the air guide flap lifts upwards when swiveled backwards. Furthermore, it is expedient to fine-tune the height and lateral position of the air guide flap with additional devices, e.g. Elongated holes. In addition, their installation on the suction shaft can be precisely positioned.
Da beim Kehrbetrieb vor allem die Grobschmutzklappe an der Vorderwand des Saugschachts der Gefahr des Zu- sammenstoßes mit sperrigen Kehrgutteilen ausgesetzt ist, ist auf deren Bewegungsablauf besonderes Augen¬ merk zu richten. Dementsprechend wird gem. einer be¬ sonders vorteilhaften Variante der Erfindung die Grob¬ schmutzklappe nicht im Kreisbogen nach oben geschwenkt, sondern etwa parallel zur Vorderwand des Saugschachts nach oben gezogen. Eine derartige 3ewegungsführung läßt sich vorteilhaft durch eine Gelenkhebelführung od. dgl. zwischen Grobschmutzklappe und Tragrahmen und/ oder eine LaufSchienenführung realisieren.Since the coarse dirt flap on the front wall of the suction shaft is particularly exposed to the risk of collision with bulky sweepings during sweeping special attention should be paid to the sequence of their movements. Accordingly, according to In a particularly advantageous variant of the invention, the coarse dirt flap is not pivoted upward in a circular arc, but rather is pulled upward approximately parallel to the front wall of the suction duct. Such a 3-way guide can advantageously be implemented by means of an articulated lever guide or the like between the coarse dirt flap and the support frame and / or a running rail guide.
In weiterer Ausgestaltung können die Luftleitfl chen in der Luftleitklappe, die Anlagefl chen der jeweiligen Klappen und/oder die Innenwände des Saugschachts mit Gummi od. dgl. Werkstoff beschichtet seien. Dadurch werden Stöße durch auf der Straße liegendes oder umher¬ fliegendes Kehrgut gedämpft; außerdem wird die Haltbar¬ keit der gesamten erfindungsgemäßen Vorrichtung erhöht. Die Grobschmutzklappe kann in ihrer Gesamtheit aus nachgiebig elastischem Werkstoff, z.B. Kunstgummi, bestehen. Sie kann dadurch auch in ihrer unteren Stel¬ lung Hindernisse der Straßenoberfläche überwinden, ohne zerstört zu werden. In a further embodiment, the air guiding surfaces in the air guiding flap, the contact surfaces of the respective flaps and / or the inner walls of the suction shaft can be coated with rubber or the like material. This dampens impacts from debris lying or flying around on the street; In addition, the durability of the entire device according to the invention is increased. The coarse dirt flap can be made in its entirety from resiliently elastic material, for example synthetic rubber. As a result, even in its lower position, it can overcome obstacles on the road surface without being destroyed.
I Rahmen der Erfindung besteht die Möglichkeit, durch ferngesteuertes oder automatisches Absenken bzw. An¬ heben der beiden Klappen die Einstellung der jeweils günstigsten Ansaughöhe zwecks Erzielen eines gleich- mäßigen Saugbetriebs bei sich ändernder Kehrgutbeschaf¬ fenheit zu verwirklichen. Die beiden Klappen können dabei synchron oder unabhängig voneinander betätigt werden.Within the scope of the invention there is the possibility, by means of remote-controlled or automatic lowering or raising of the two flaps, of setting the most favorable suction height in order to achieve a uniform suction operation with changing sweeping material properties. The two flaps can be operated synchronously or independently of each other.
Bezüglich weiterer vorteilhafter Ausführungen wird auf die beiliegenden Unteransprüche verwiesen.With regard to further advantageous embodiments, reference is made to the accompanying subclaims.
Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnung näher erläutert. Es zeigtExemplary embodiments of the invention are explained in more detail below with reference to the drawing. It shows
Fig. 1 eine schematische Seitenansicht eines an einem Kehrfahrzeug angebrachten Saug¬ schachts, Fig. 2 einen Seitenriß eines Saugschachts nach der Erfindung,1 is a schematic side view of a suction shaft attached to a sweeper, FIG. 2 is a side elevation of a suction shaft according to the invention,
Fig. 3 den Saugschacht gem. Fig. 1 mit hochgezogenenFig. 3 shows the suction shaft. Fig. 1 with pulled up
Klappen, Fig. 4 im Seitenriß einen vergrößerten Teilaus¬ schnitt einer alternativen Ausführungsform der Vorderwand des Saugschachts. Flaps, Fig. 4 in side elevation an enlarged partial section of an alternative embodiment of the front wall of the suction shaft.
Ge . Fig. 1 ist der Saugschacht 1 an einem Lastkraft¬ wagen 40, beispielsweise an einem Unimog, zwischen dessen (nicht gezeichneten) Vorderrad und dessen Hin¬ terrad 41 auf der in Fahrtrichtung F gesehen rechten Seite angeordnet. Der Saugschacht 1 besteht im wesent¬ lichen aus der Grobschmutzklappe 6, der Luftleitklappe 4 und den Hubzylindern 13,14 und ist an einer Zuführung 42 zu einem nicht gezeichneten Kehrgutbehälter ange¬ schlossen. Ferner ist der Saugschacht 1 in einem sc.tematisch angedeuteten Tragrahmen 43 gehaltert, der mit einer im wesentlichen parallel zur Fahrtrichtung F gerichteten Deichsel 44 versehen ist. Das vordere Ende der Deichsel 44 ist an einem am Fahrgestell des Lastkraftwagens 40 befestigten Flansch 45 angelenkt. Auf beiden Seiten des Saugschachts 1 bzw. des Trag¬ rahmen 43 ist je ein auf der Kehrfläche 46 rollendes Laufrad 47 angebracht, wobei zwecks der Übersichtlich¬ keit nur das rechte Laufrad 47 gezeichnet ist. Ge. 1, the suction shaft 1 is arranged on a truck 40, for example on a Unimog, between its front wheel (not shown) and its rear wheel 41 on the right-hand side as viewed in the direction of travel F. The suction shaft 1 essentially consists of the coarse dirt flap 6, the air guide flap 4 and the lifting cylinders 13, 14 and is connected to a feed 42 to a dirt hopper (not shown). Furthermore, the suction shaft 1 is held in a support frame 43 indicated schematically, which is provided with a drawbar 44 directed essentially parallel to the direction of travel F. The front end of the drawbar 44 is articulated on a flange 45 fastened to the chassis of the truck 40. On both sides of the suction shaft 1 and the support frame 43 there is an impeller 47 rolling on the sweeping surface 46, only the right impeller 47 being drawn for the sake of clarity.
Ge . Fig. 2 ist der in Richtung des Pfeiles P parallel zur Bodenfläche bewegte Saugschacht 1 an seinem unteren Ende, wo sich die Saugöffnung 2 befindet, mit einer an seiner Rückwand 3 anliegenden Luftleitklappe 4 und mit einer an seiner Vorderwand 5 anliegenden Grob¬ schmutzklappe 6 versehen. Die die Außenwände des Saug¬ schachts 1 berührenden Anlageflächen 7 bzw. 8 der Luft¬ leitklappe 4 bzw. Grobschmutzklappe 6 können jeweils mit einer Gummiaufläge beschichtet sein. Die Wände des Saugschachts 1 sind durch ein Gehäuse 9 aus Stahl¬ blech gebildet und an ihren Innenseiten mit einer Gum¬ miauflage 10 ausgekleidet. Die Gummiaufläge 10 dient zum Schutz des Gehäuses 9.Ge. 2 is the suction shaft 1 moved in the direction of arrow P parallel to the floor surface at its lower end, where the suction opening 2 is located, with an air flap 4 resting on its rear wall 3 and with a coarse dirt flap 6 resting on its front wall 5 . The contact surfaces 7 or 8 of the air guide flap 4 or coarse dirt flap 6 touching the outer walls of the suction shaft 1 can each be coated with a rubber cover. The walls of the suction shaft 1 are formed by a housing 9 made of sheet steel and are lined on their inner sides with a rubber pad 10. The rubber pads 10 serve to protect the housing 9.
Die Luftleitklappe 4 bzw. Grobschmutzklappe 6 sind jeweils über Gelenkstellen 11,12 mit einem hinteren Hubzylinder 13 bzw. einem vorderen Hubzylinder 14 schwenkbar verbunden. Der hintere Hubzylinder 13 ist im Drehpunkt 15, der vordere Hubzylinder 14 im Dreh- punkt 16 an jeweilige Träger 17, 18 eines nicht näher gezeichneten Tragrahmen beweglich angelenkt.The air guide flap 4 or coarse dirt flap 6 are each pivotally connected to a rear lifting cylinder 13 or a front lifting cylinder 14 via articulation points 11, 12. The rear lifting cylinder 13 is articulated at the pivot point 15, the front lifting cylinder 14 at the pivot point 16 on respective supports 17, 18 of a support frame (not shown).
Die Luftleitklappe weist an ihrer Rückseite beidseitig eine Platte 19 mit etwa dreieckförmigen Profil auf. The air guide flap has a plate 19 on both sides with an approximately triangular profile.
Daran sind mittels durch Langlδcher 20, 21 führende nicht gezeichnete Schraubverbindungen die unteren Enden von Schwenkarmen 22 fest angeschraubt. Die Langlöcher 20, 21 dienen gleichzeitig der Feineinstellung der Höhenlage und Neigung der Luftleitklappe 4. Die oberen Enden der Schwenkarme 22 sind in Drehpunkten 36 ober¬ halb der Luftleitklappe 4 und von dieser in Richtung Vorderwand 5 horizontal versetzt drehbar gelagert. Aufgrund dieser Anordnung kann die Luftleitklappe nach hinten oben ausgeschwenkt werden. Die Luftleitklappe 4 ist ähnlich den Wänden des Saugschachts 1 aus einer Stahl-/Gummi- Verbundkonstruktion aus einem Stahlblech- profil 37 mit Gummischütz 38 gebildet. Auf der Rück¬ seite ist das Stahlblechprofil 37 ferner durch Rippen 24 versteift. Die Anlagefläche 7 der Luftleitklappe 4 ist im wesentlichen durch ein Anschlagelement 25, mit etwa rechtwinkligem Profil gebildet.The lower ends of swivel arms 22 are firmly screwed to this by means of screw connections (not shown) leading through elongated holes 20, 21. The elongated holes 20, 21 serve at the same time for fine adjustment of the height and inclination of the air guide flap 4. The upper ends of the swivel arms 22 are rotatably supported at pivot points 36 above the air guide flap 4 and offset horizontally from the latter in the direction of the front wall 5. Due to this arrangement, the air guide flap can be swung out to the rear. The air guide flap 4 is formed, similar to the walls of the suction shaft 1, from a steel / rubber composite construction made from a sheet steel profile 37 with a rubber contactor 38. The steel sheet profile 37 is further stiffened by ribs 24 on the rear side. The contact surface 7 of the air guide flap 4 is essentially formed by a stop element 25 with an approximately rectangular profile.
In Fig. 3 sind die Luftleitklappe 4 und die Grob- schmutzklappe 6 in ihrer hochgezogenen Stellung darge¬ stellt. Beide sind vom hinteren Hubzylinder 13 bzw. vorderen Hubzylinder 14 in eine Schwenkbewegung nach oben.gezogen, wobei die Grobschmutzklappe 6 in einer 3 shows the air guide flap 4 and the coarse dirt flap 6 in their raised position. Both are pulled by the rear lifting cylinder 13 or front lifting cylinder 14 in a pivoting movement upwards, the coarse dirt flap 6 in one
an der Vorderwand 5 des Saugschachts 3 angebracht en Anlenkstelle 26 angelenkt ist.attached to the front wall 5 of the suction shaft 3 and articulation point 26 is articulated.
In Fig. 4 ist für die Grobschmutzklappe 6 keine direkte Verbindung mit der Vorderwand 5 des Saugschachts 1 vorgesehen. Vielmehr wird der Bewegungsabiaf der Grob¬ schmutzklappe 6 durch zwei unterschiedlich lange Führungsstangen 27, 28 bestimmt, wobei die oberen Führ¬ ungstange 28 länger als die untere Führungsstange 27. Deren klappenseitige Enden sind in Gelenkstellen 29, 30 auf der Grobschmutzklappe 6 drehbar gelagert; die anderen Enden der Führungsstangen 27,28 sind in An- lenkpunkten 31 , 32 angelenkt, die an einem zum Trag¬ rahmen gehörenden Träger 33 vorgesehen sind. Der Be- wegungsablauf der Grobschmutzklappe 6 ergibt sich aus der Führungsbahn 34 ihrer oberen Gelenkstellen 29 und der Führungsbahn 23 ihrer unteren Gelenkstellen 30.In Fig. 4 no direct connection to the front wall 5 of the suction shaft 1 is provided for the coarse dirt flap 6. Rather, the range of motion of the coarse dirt flap 6 is determined by two guide rods 27, 28 of different lengths, the upper guide rod 28 being longer than the lower guide rod 27. Their ends on the flap side are rotatably mounted on the coarse dirt flap 6 in articulation points 29, 30; the other ends of the guide rods 27, 28 are articulated in articulation points 31, 32, which are provided on a support 33 belonging to the support frame. The movement sequence of the coarse dirt flap 6 results from the guideway 34 of its upper articulation points 29 and the guideway 23 of its lower articulation points 30.
Durch Anheben und Absenken der Luftleitklappe 4 und der Grobschmutzklappe 6 läßt sich beim konkreten Aus¬ führungsbeispiel die Ansaughöhe in einem Bereich von etwa 30 bis 100 mm variieren. By lifting and lowering the air guide flap 4 and the coarse dirt flap 6, the suction height can be varied in a range from approximately 30 to 100 mm in the specific exemplary embodiment.

Claims

Patentansprüche Claims
1. Saugschacht (1) an einem Kehrfahrzeug, der angrenz¬ end an seine Saugöffnung (2) an der Rückwand (3) mit einer Luftleiteinrichtung und an der Vorder¬ wand (5) mit einer Grobschmutzklappe (6) versehen
Figure imgf000014_0001
dadurch gekennzeichnet, daß die Luftleiteinrichtung eine lose .am Saugschacht abgestützte Luftleitklappe (4) ist, ctaß diese und auch die Grobschmutzklappe (6) durch Hubzylinder - (13,14) und/oder Dämpfungselemente mit dem Saug¬ schacht oder einem dazugehörigen Tragrahmen beweg¬ lich verbunden sind und daß die Luftleitklappe (4) mit wenigstens einem Schwenkarm (22) fest verbunden ist, der an Saugschacht oder Tragrahmen in einem Drehpunkt (36) oberhalb der Luftleitklappe (4) und dergegenüber in Richtung Vorderwand (5) versetzt aπgelenkt ist. 1. Suction shaft (1) on a sweeper which, adjacent to its suction opening (2) on the rear wall (3), is provided with an air guiding device and on the front wall (5) with a coarse dirt flap (6)
Figure imgf000014_0001
characterized in that the air guiding device is a loose air guiding flap (4) supported on the suction shaft, it and the coarse dirt flap (6) are moved by lifting cylinders (13, 14) and / or damping elements with the suction shaft or an associated supporting frame Lich are connected and that the air flap (4) is fixedly connected to at least one swivel arm (22) which is articulated on the suction shaft or support frame at a pivot point (36) above the air flap (4) and opposite in the direction of the front wall (5).
2. Saugschacht nach Anspruch 1 , dadurch gekennzeichnet, daß die Hubzylinder (13,14) als steuerbare Hydrau¬ lik- oder Pneumatikzylinder ausgeführt sind, die jeweils zwischen einer Klappe (4,6) einerseits und2. Suction shaft according to claim 1, characterized in that the lifting cylinders (13, 14) are designed as controllable hydraulic or pneumatic cylinders, each between a flap (4, 6) on the one hand and
Saugschacht bzw. Tragrahmen andererseits abgestützt sind .Suction shaft or support frame are supported on the other hand.
3. Saugschacht nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Luftleitklappe (4) parallel zu ihrer Ober¬ kante ein Anschlagelement (25) zur flächigen Anlage an der Rückwand (3) des Saugschachts aufweist.3. Suction shaft according to claim 1 or 2, characterized in that the air guide flap (4) has a stop element (25) parallel to its upper edge for surface contact with the rear wall (3) of the suction shaft.
* * 4. Saugschacht nach Anspruch 3, dadurch gekennzeichnet, daß wenigstens eine der Anschlagfl chen von An¬ schlagelement (25) und Rückwand (3) mit Gummi oder dgl. Werkstoff beschichtet ist.4. Suction shaft according to claim 3, characterized in that at least one of the stop surfaces of the stop element (25) and rear wall (3) is coated with rubber or the like. Material.
5. Saugschacht nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Luftleitklappe (4) an zwei seitlichen Schwenkarmen (22) mittels zweier oder mehrerer Lang- löcher (20,21) lagenverstellbar befestigt ist. 5. Suction shaft according to one of claims 1 to 4, characterized in that the air guide flap (4) on two side pivot arms (22) by means of two or more elongated holes (20,21) is fixed in an adjustable position.
6. Saugschacht nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Grobschmutzklappe (6) mittels Führungsstan¬ gen (27,28) und/oder einer Gelenkhebelführung längs einer vor der Vorderwand (5) des Saugschacht (1) nach oben verlaufenden Führungsbahn (34) vom Boden abhebbar geführt ist.6. Suction shaft according to one of claims 1 to 4, characterized in that the coarse dirt flap (6) by means of guide rods (27, 28) and / or an articulated lever guide along an in front of the front wall (5) of the suction shaft (1) extending upwards Guide track (34) is guided to be lifted off the floor.
7. Saugschacht nach Anspruch 6, dadurch gekennzeichnet, daß am oberen Ende der Grobschmutzklappe (6) dreh¬ bare Rollen (35) angebracht sind, die in die Führungsbahn (34) bildenden Laufschienen geführt sind.7. Suction shaft according to claim 6, characterized in that at the upper end of the coarse dirt flap (6) rotatable rollers (35) are attached which are guided in the guideway (34) forming rails.
8. Saugschacht nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die mit Kehrgut in Berührung kommenden Ober¬ flächen der Klappen (4,6) oder die Innenwände des Saugschachts (1) mit Gummi, Kunststoff od. dgl. beschichtet sind, oder daß die Klappen (4,6) aus Gummi, Kunststoff od. dgl. bestehen.8. Suction shaft according to one of claims 1 to 7, characterized in that the surfaces of the flaps (4, 6) coming into contact with sweepings or the inner walls of the suction shaft (1) are coated with rubber, plastic or the like. or that the flaps (4,6) made of rubber, plastic or the like.
9. Saugschacht nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Luftleitklappe (4) auf ihrer Rückseite Ver¬ steifungsrippen (24) aufweist. 9. Suction shaft according to one of claims 1 to 8, characterized in that the air guide flap (4) has stiffening ribs (24) on its rear side.
PCT/EP1985/000541 1984-10-17 1985-10-16 Suction duct on a litter collection vehicle WO1986002394A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3437990.8 1984-10-17
DE19843437990 DE3437990A1 (en) 1984-10-17 1984-10-17 SUCTION CHAMBER ON A SWEEPER

Publications (1)

Publication Number Publication Date
WO1986002394A1 true WO1986002394A1 (en) 1986-04-24

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EP (1) EP0197144A1 (en)
DE (1) DE3437990A1 (en)
WO (1) WO1986002394A1 (en)

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US5208941A (en) * 1992-06-23 1993-05-11 Mark Ettere High power vacuum attachment apparatus
DE19520778C1 (en) * 1995-06-07 1996-07-18 Juergen Pierau Suction arrangement for street cleaner
US5839157A (en) * 1996-05-06 1998-11-24 Elgin Sweeper Company Street sweeper pick-up head
US8245345B2 (en) 2003-05-14 2012-08-21 Karcher North America, Inc. Floor treatment apparatus
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system
USD907868S1 (en) 2019-01-24 2021-01-12 Karcher North America, Inc. Floor cleaner

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DE4001088C2 (en) * 1990-01-17 1998-09-17 Smv Sweeper
DE4128879A1 (en) * 1991-08-30 1993-03-04 Schoerling Waggonbau Street cleaning by sweeper lorry with clearance control - predetermining air speed requirement and ratio of forward and rearward clearances from empirical dependences
AT395991B (en) * 1991-10-16 1993-04-26 Ranner Dietrich METHOD AND DEVICE FOR REMOVING DUST AND DIRTY PARTICLES
DE4140926C2 (en) * 1991-12-09 1994-07-14 Kroll Fahrzeugbau Umwelt Sweeper
DE4414628A1 (en) * 1994-04-18 1995-10-19 Hako Gmbh & Co Mobile sweeping machine for light refuse
DE102009047368A1 (en) * 2009-12-01 2011-06-09 Max Holder Gmbh Reverse mounting device for self-propelled vehicle, has fixing unit for mounting reverse mounting device at vehicle, and holding unit with swivel arm, at which brush is set
ES2369983B1 (en) * 2011-07-28 2012-10-15 Ausa Center, S.L.U. SUCTION MOUTH WITH FLEXIBLE INPUT FOR SWEEPING VEHICLE
DE102013003536A1 (en) 2013-03-02 2014-09-04 Aebi Schmidt Deutschland Gmbh Pick-up sweeper
DE102019001845A1 (en) * 2019-03-15 2020-09-17 Brock Kehrtechnik Gmbh Surface cleaning vehicle with an adjustable suction device to reduce a flow cross-section

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GB847709A (en) * 1958-03-27 1960-09-14 Johnston Brothers Eng Improvements in or relating to suction refuse collecting vehicles
DE1096941B (en) * 1959-01-08 1961-01-12 Schoerling & Co Waggonbau Sweeping machine that collects the waste by means of negative pressure
DE2217975A1 (en) * 1972-04-14 1973-10-25 Schoerling & Co Waggonbau ON A VEHICLE, IN PARTICULAR RAILWAY VEHICLE, EQUIPMENT ARRANGED FOR CLEANING GRAPH BEDS, SLEEPERS AND SIMILAR RAILWAYS
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5208941A (en) * 1992-06-23 1993-05-11 Mark Ettere High power vacuum attachment apparatus
DE19520778C1 (en) * 1995-06-07 1996-07-18 Juergen Pierau Suction arrangement for street cleaner
US5839157A (en) * 1996-05-06 1998-11-24 Elgin Sweeper Company Street sweeper pick-up head
US9015887B1 (en) 2003-05-14 2015-04-28 Kärcher North America, Inc. Floor treatment apparatus
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US8245345B2 (en) 2003-05-14 2012-08-21 Karcher North America, Inc. Floor treatment apparatus
US9192276B2 (en) 2003-05-14 2015-11-24 Karcher North America, Inc. Floor cleaning apparatus
US9451861B2 (en) 2003-05-14 2016-09-27 Kärcher North America, Inc. Floor treatment apparatus
US9510721B2 (en) 2003-05-14 2016-12-06 Karcher North America, Inc. Floor cleaning apparatus
US9730566B2 (en) 2003-05-14 2017-08-15 Kärcher North America, Inc. Floor treatment apparatus
US9757005B2 (en) 2003-05-14 2017-09-12 Kärcher North America, Inc. Floor treatment apparatus
US10555657B2 (en) 2003-05-14 2020-02-11 Kärcher North America, Inc. Floor treatment apparatus
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system
USD907868S1 (en) 2019-01-24 2021-01-12 Karcher North America, Inc. Floor cleaner

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Publication number Publication date
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DE3437990A1 (en) 1986-04-24

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