EP0288436B1 - Apparatus for cleaning hard top ground surfaces - Google Patents

Apparatus for cleaning hard top ground surfaces Download PDF

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Publication number
EP0288436B1
EP0288436B1 EP88810242A EP88810242A EP0288436B1 EP 0288436 B1 EP0288436 B1 EP 0288436B1 EP 88810242 A EP88810242 A EP 88810242A EP 88810242 A EP88810242 A EP 88810242A EP 0288436 B1 EP0288436 B1 EP 0288436B1
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EP
European Patent Office
Prior art keywords
sweeping
air
brush roller
duct
fan
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP88810242A
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German (de)
French (fr)
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EP0288436A1 (en
Inventor
Marcel Boschung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
REBERLE REG TREUUNTERNEHMEN SCHAAN
Original Assignee
REBERLE REG TREUUNTERNEHMEN SCHAAN
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Filing date
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Application filed by REBERLE REG TREUUNTERNEHMEN SCHAAN filed Critical REBERLE REG TREUUNTERNEHMEN SCHAAN
Priority to AT88810242T priority Critical patent/ATE60636T1/en
Publication of EP0288436A1 publication Critical patent/EP0288436A1/en
Application granted granted Critical
Publication of EP0288436B1 publication Critical patent/EP0288436B1/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
    • E01H6/00—Apparatus equipped with, or having provisions for equipping with, both elements for especially removal of refuse or the like and elements for removal of snow or ice
    • 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
    • E01H1/0809—Loosening or dislodging by blowing ; Drying by means of gas streams
    • E01H1/0818—Loosening or dislodging by blowing ; Drying by means of gas streams in apparatus with mechanical loosening or feeding instruments, e.g. brushes, scrapers
    • 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
    • E01H1/0863—Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction ; Combined suction and blowing nozzles
    • E01H1/0872—Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction ; Combined suction and blowing nozzles with mechanical loosening or feeding instruments for the dirt to be removed pneumatically, e.g. brushes, scrapers
    • 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
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/08—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by driven elements
    • E01H5/09—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by driven elements the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels
    • E01H5/092—Brushing elements
    • 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
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/10—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice by application of heat for melting snow or ice, whether cleared or not, combined or not with clearing or removing mud or water, e.g. burners for melting in situ, heated clearing instruments; Cleaning snow by blowing or suction only
    • E01H5/106—Clearing snow or ice exclusively by means of rays or streams of gas or steam, or by suction with or without melting

Definitions

  • the invention relates to a cleaning vehicle according to the preamble of patent claim 1.
  • the European patent application published under number 0 189 371 describes a snow removal machine with a chassis frame which is supported on a front steering axle and a rear axle.
  • a traction motor is used to move the snow removal machine.
  • a sweeping brush roller extending transversely to the longitudinal direction of the machine is arranged between the front and rear axles.
  • a hollow support, which also serves as a blown air duct, is pivotably arranged on the underside of the chassis frame and the sweeping roller is articulated on the support mentioned above by means of levers.
  • the outlet side of a fan is connected to the blast air duct, which distributes the blown air to various blower nozzles arranged in the working direction in front of the brush brush.
  • a working motor is used to drive the fan and the brush roller.
  • a snow plow is arranged on the front of the known snow-clearing machine and pushes most of the snow lying on the ground to the left or right in accordance with its inclination to the longitudinal axis of the machine. Remaining snow on the ground is blown to the side by the above-mentioned blowing nozzles in the same direction below the chassis frame. Any snow remnants adhering to the ground are swept by the sweeping brush roller into the area of the blowing nozzles and also blown away.
  • This known snow removal machine is very well suited for clearing the runways at airports, but not for keeping these runways clean during the snow-free time.
  • a device for cleaning surfaces by means of an air stream which device has a pick-up head movable over the surface to be cleaned, a blower for generating the air stream on the pick-up head and a collecting container for the picked up dust .
  • the recording head is box-shaped and along the edge there are elastic curtain elements for forming a substantially closed space on the underside of the recording head.
  • the pick-up head has a compressed air duct opening through a slot in the space mentioned and a suction duct leading out of the space through which the dust whirled up by the supplied compressed air is sucked into the collecting container.
  • the cleaning vehicle according to the invention is characterized by the features stated in the characterizing part of patent claim 1 ' .
  • the cleaning vehicle shown in FIGS. 1 to 4 has a chassis frame 1, which is supported by means not shown on a front steerable planetary axis 2 and a rear, optionally also steerable planetary axis 3.
  • a driver's cab 4 In the front area of the chassis frame 1 there is a driver's cab 4. Behind and below the driver's cab 4 there is a drive motor 5 which drives the front planetary axle 2 and optionally also the rear planetary axle 3.
  • a steering mode switching device (not shown) arranged in the driver's cab 4 allows the driver to switch to the front-wheel, four-wheel or dog-gear steering as required.
  • the rear axle follows the track of the front axle and inevitably causes the sweeper to be guided in the track of the cleaning vehicle even when cornering.
  • crab steering all four wheels swivel in the same direction, which leads to a diagonal shift of the cleaning vehicle. Obstacles can be avoided and maneuvering is made easier.
  • the chassis frame 1 is formed in the area between the front and rear planetary axes 2 and 3 by cranking in such a way that the greatest possible free space is created between the roadway and the chassis frame for receiving the sweeper.
  • a working motor 6 is arranged in the area above the rear planetary axis 3. This drives two or, as required, more hydraulic rotary piston pumps, which in turn drive a powerful radial blower 7 and a brush brush drive, not shown, via two axial piston motors, not shown.
  • the outlet 8 of the radial blower 7 is connected via a pipe 9 to a hollow support 10, which also serves as the main blowing air duct.
  • the carrier 10 is connected to the chassis frame 1 via a three-point suspension 11 fastened to the chassis frame 1 and a turntable 12 fastened to the carrier 10 so that it can pivot about a vertical axis. Of the two extreme pivoting movements of the carrier 10, one in each case is shown in broken lines in FIGS. 2 and 4.
  • a sweeping brush roller 14 is connected via a handlebar 13, which can be lifted off or lowered onto the floor via hydraulic drive cylinders (not shown).
  • the sweeping brush roller 14 is formed in two parts and can be rotated by a chain drive (not shown) arranged in the middle of the sweeping brush roller 14. An embodiment of such a chain drive is described in more detail with reference to FIG. 9 in the European patent application mentioned at the beginning, published under number 0 189 371.
  • a curved protective shield 15 which extends over the entire length of the sweeping brush roller 14.
  • the protective shield 15 covers the upper half of the sweeping brush roller 14 and prevents snow, dust or dirt from being thrown upwards by the same.
  • a rubber protective flap 16 extends downward from the rear end of the protective shield 15.
  • a cover plate 17 is arranged on the front of the sweeping brush roller 14 and, together with the sweeping brush roller 14 and the base 18, forms a blowing duct 19 which extends over the entire length of the sweeping brush roller 14.
  • the cleaning vehicle shown in FIGS. 1 and 2 is prepared for snow removal.
  • a snow plow 20 of a known type is mounted on the front of the cleaning vehicle.
  • the snow plow 20 can be pivoted about a vertical axis so that the snow is pushed to the left or to the right.
  • FIG. 5 shows a simplified diagrammatic representation of the sweeper device set for winter operation, which connects the support 10 serving as the main blowing duct, which is pivotably connected about the vertical frame via the turntable 12 and the three-point suspension 11 to the chassis frame 1 (not shown in FIG. 5) 5, and comprises the sweeping brush roller 14, which can be raised and lowered via the handlebars 13 (not shown in FIG. 5).
  • an adjustable deflection device 21 is arranged with an invisible and pivotable about a horizontal axis air deflection flap which can be brought into one of three positions via an operating lever 22.
  • the invisible air deflection flap is also pivoted to the right in relation to FIG. 5, so that all air entering the deflection device 21 via the pipeline 9 is guided into the left half of the carrier 10 .
  • two blowing nozzles 23 and 24 are connected, which open into the blowing duct 19 through the cover plate 17, not shown in FIG. 5, and are directed to the right.
  • two blowing nozzles 25 and 26 are connected, which extend through the non-visible cover 17 into the blowing duct 19 and are directed to the left.
  • a closable blowing nozzle 27 and 28 which is arranged behind the rubber protective flap 16 in the working direction. These two closable blow nozzles 27 and 28 are directed towards each other.
  • a suction mouth 29 or 30 is arranged under the cover plate 17, see FIGS. 1 and 2.
  • the suction mouths 29 and 30 are connected to the underside of the carrier 10 via parallelogram-like links 31 and can be used with With the help of hydraulic working cylinders, not shown, be raised to an upper position or lowered into the working position.
  • a dirt suction pipe 32 or 33 is connected to each suction mouth 29 and 30.
  • An air outlet connection 34 is arranged on the top of the pipeline 9 and can be closed by means of a flap 35 indicated by dashed lines.
  • the flap 35 can be operated by an operating lever 36.
  • the reverse blowing device shown in FIG. 5 is set for winter operation, ie for snow removal.
  • the operating levers 22 and 36 are in the position shown, so that the entire amount of air conveyed by the radial fan 7 reaches the left-hand half of the main blowing air duct formed by the carrier 10 in relation to FIG. 5 and thus to the blowing nozzles 23, 24 and 27.
  • the rectified blow nozzles 23 and 24 is within the blow duct 19, see Fig. 1, before Sweeping brush roller 14 generates an air flow which conveys all loose snow in the blowing duct 19 to the right in relation to FIG. 5.
  • suction mouths 29 and 30 which are not required for snow removal are in their uppermost position so that the air flow mentioned is hampered as little as possible.
  • the operating lever 22 is moved into the other end position, with the result that the air conveyed by the radial blower 7 flows into the right half of the carrier 10 formed main blowing air channel and reaches the nozzles 25, 26 and 28.
  • FIG. 3 and 4 show the cleaning vehicle, which is prepared for the vacuum sweeping operation.
  • a dirt hopper 38 is placed on the chassis frame 1, which can be tilted about a horizontal axis 39 for emptying.
  • the rear of the sweepings suction container 38 can be closed tightly by a closure cover 40.
  • the dirt suction pipes 32 and 33 and an air suction duct 42 which can be connected to the inlet 41 of the radial blower 7 are detachably connected to the sweeping material suction container 38 via a separation point 43 arranged in an inclined plane.
  • Within the sweeping material suction container 38 there is a filter screen 44, indicated by dashed lines, which keeps the suctioned dirt away from the radial fan 7.
  • the sweeper shown in Fig. 6 is set for sweeping operation.
  • the operating lever 22 is in the middle position, so that air reaches both halves of the main blowing air duct formed by the carrier 10 and the blowing nozzles 23, 24, 25 and 26.
  • the blowing nozzles 27 and 28 arranged behind the rubber protective flap 16 are by means not shown, e.g. matching lid, closed.
  • the flap 35 in the air outlet connection 34 is partially open, so that part of the air conveyed by the radial fan 7 can escape to the outside. In this way, a slight negative pressure is created in the blow duct 19, which prevents dust from escaping from the blow duct 19.
  • a water tank (not shown) can be arranged for the water spray system (not shown in more detail), which is usually required for dust binding.
  • the suction mouths 29 and 30 are lowered into the working position and the sweeping brush roller 14 is driven in the direction of arrow 37 at a reduced speed in comparison to snow clearing operation.
  • the radial fan 7 sucks air through the suction mouths 29 and 30, the dirt suction pipes 32 and 33, the sweepings suction container 38 with the filter sieve 44 and the air suction duct 42 and thereby causes, when the flap 45 is closed, that in the sweepings suction container 38, the suction pipes 32 and 33 and the Suction mouths 29 and 30 creates a negative pressure.
  • the flap 45 is opened when the sweeping material suction container 38 is not dismantled when the cleaning vehicle is in winter operation.
  • the dust is bound by supplying small amounts of spray water from the water tank (not shown), so that the radial fan 7 sucked in through the filter screen 44, respectively. blown air is as dust-free as possible.
  • the sweeping brush roller 14 supports the work of the blowing nozzles 23 to 26 by loosening stuck dirt or debris not removed from the blowing nozzles and throwing them into the area of the blowing nozzles 23 to 26 or feeding them directly from behind to the suction mouths 29 and 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Cleaning In General (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Soil Working Implements (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

A chassis frame is supported on a front steering axle and a rear steering axle. Between the two axles and beneath the chassis frame, a hollow support serving as a main blow duct is pivotingly disposed. Raisably and lowerably connected to the support via levers is a sweeping-brush roller. Connected to the support are blowing nozzles which lead air supplied by a fan mounted on the chassis frame into a blow duct formed by a cover plate disposed in front of the sweeping-brush roller. Disposed within the blow duct are two suction ports which are connected via dirt-suction pipes to a vacuum-sweepings container disposed on the chassis frame. The outlet of the vacuum-sweeings container is connected at a dismantling point to an air-suction duct which is in turn connected to the intake of the fan. This cleaning vehicle can be used for snow clearance by opening a flap and closing another flap in an air-outlet pipe piece and by moving an operating lever from a middle position into either of two end positions.

Description

Die Erfindung betrifft ein Reinigungsfahrzeug gemäss dem Oberbegriff des Patentanspruches 1.The invention relates to a cleaning vehicle according to the preamble of patent claim 1.

In der unter der Nummer 0 189 371 veröffentlichten europäischen Patentanmeldung ist eine Schneeräumungsmaschine mit einem Fahrgestellrahmen beschrieben, der auf eine vordere Lenkachse und eine hintere Achse abgestützt ist. Ein Fahrmotor dient zur Fortbewegung der Schneeräumungsmaschine. Zwischen der vorderen und der hinteren Achse ist eine sich quer zur Längsrichtung der Maschine erstreckende Kehrbürstenwalze angeordnet. Ein hohler Träger, der gleichzeitig als Blasluftkanal dient, ist schwenkbar auf der Unterseite des Fahrgestellrahmens angeordnet und die Kehrwalze ist über Hebel anheb- und absenkbar am genannten Träger angelenkt. Die Ausgangsseite eines Ventilators ist an den Blasluftkanal angeschlossen, welcher die Blasluft auf verschiedene, in der Arbeitsrichtung vor der Kehrbürstenwalze angeordnete Blasdüsen verteilt. Ein Arbeitsmotor dient zum Antreiben des Ventilators und der Kehrbürstenwalze. An der Frontseite der bekannten Schneeräumungsmaschine ist ein Schneepflug angeordnet, der den grössten Teil des auf dem Boden liegenden Schnees entsprechend seiner Schrägstellung zur Längsachse der Maschine nach links oder rechts schiebt. Noch auf dem Boden verbleibende Schneereste werden von den genannten Blasdüsen in der gleichen Richtung unterhalb des Fahrgestellrahmens zur Seite geblasen. Allfällig am Boden haftende Schneereste werden durch die Kehrbürstenwalze in den Bereich der Blasdüsen gekehrt und ebenfalls weggeblasen. Diese bekannte Schneeräumungsmaschine eignet sich sehr gut zum Räumen der Start- und Landebahnen auf Flughäfen, jedoch nicht zur Sauberhaltung dieser Bahnen während der schneefreien Zeit.The European patent application published under number 0 189 371 describes a snow removal machine with a chassis frame which is supported on a front steering axle and a rear axle. A traction motor is used to move the snow removal machine. A sweeping brush roller extending transversely to the longitudinal direction of the machine is arranged between the front and rear axles. A hollow support, which also serves as a blown air duct, is pivotably arranged on the underside of the chassis frame and the sweeping roller is articulated on the support mentioned above by means of levers. The outlet side of a fan is connected to the blast air duct, which distributes the blown air to various blower nozzles arranged in the working direction in front of the brush brush. A working motor is used to drive the fan and the brush roller. A snow plow is arranged on the front of the known snow-clearing machine and pushes most of the snow lying on the ground to the left or right in accordance with its inclination to the longitudinal axis of the machine. Remaining snow on the ground is blown to the side by the above-mentioned blowing nozzles in the same direction below the chassis frame. Any snow remnants adhering to the ground are swept by the sweeping brush roller into the area of the blowing nozzles and also blown away. This known snow removal machine is very well suited for clearing the runways at airports, but not for keeping these runways clean during the snow-free time.

Weiter ist beispielsweise aus der CH-PS Nr. 482 876 eine Vorrichtung zum Reinigen von Flächen mittels eines Luftstromes bekannt, welche Vorrichtung einen über die zu reinigende Fläche beweglichen Aufnahmekopf, ein Gebläse zum Erzeugen des Luftstromes am Aufnahmekopf und einen Sammelbehälter für den aufgenommenen Staub aufweist. Der Aufnahmekopf ist kastenförmig ausgebildet und längs des Randes sind elastische Vorhangelemente zum Bilden eines im wesentlichen geschlossenen Raumes auf der Unterseite des Aufnahmekopfes vorhanden. Der Aufnahmekopf besitzt ein durch einen Schlitz in den genannten Raum mündenden Druckluftkanal und einen aus dem Raum führenden Saugkanal, durch den der durch die zugeführte Druckluft vom Boden aufgewirbelte Staub in den Sammelbehälter gesaugt wird. Mit dieser bekannten Vorrichtung kann nur vom schneefreien Boden Staub und Schmutz aufgenommen werden und diese Vorrichtung kann nicht zur Schneeräumung eingesetzt werden.Furthermore, for example from CH-PS No. 482 876 a device for cleaning surfaces by means of an air stream is known, which device has a pick-up head movable over the surface to be cleaned, a blower for generating the air stream on the pick-up head and a collecting container for the picked up dust . The recording head is box-shaped and along the edge there are elastic curtain elements for forming a substantially closed space on the underside of the recording head. The pick-up head has a compressed air duct opening through a slot in the space mentioned and a suction duct leading out of the space through which the dust whirled up by the supplied compressed air is sucked into the collecting container. With this known device, dust and dirt can only be absorbed from the snow-free ground and this device cannot be used for snow removal.

Den oben beschriebenen bekannten und teuren Einrichtungen haftet der Nachteil an, dass sie nur zur Winterzeit bzw. nur zur Sommerzeit eingesetzt werden können.The known and expensive devices described above have the disadvantage that they can only be used in winter or only in summer.

Es ist Aufgabe der Erfindung, ein Reinigungsfahrzeug zu schaffen, das gleichermassen als Grossflächenschneeräumemaschine mit Schneeräumschild und Kehrblasgerät als auch als Grossflächen-Saugkehrmaschine geeignet ' ist, wodurch das gleiche Reinigungsfahrzeug das ganze Jahr über eingesetzt werden kann, wodurch die Wirtschaftlichkeit erhöht wird.It is an object of the invention to provide a cleaning vehicle, which equally as large-area snow spaces machine with snow plow and snow sweeper, as well as a large area suction sweeper suitable 'is to give the same cleaning vehicle can be used throughout the year, thereby increasing the efficiency.

Das erfindungsgemässe Reinigungsfahrzeug ist durch die im kennzeichnenden Teil des Patentanspruches l' angeführten Merkmale gekennzeichnet.The cleaning vehicle according to the invention is characterized by the features stated in the characterizing part of patent claim 1 ' .

Besondere Ausführungsformen sind in den abhängigen Ansprüchen angegeben.Particular embodiments are specified in the dependent claims.

Der Erfindungsgegenstand ist mit Bezugnahme auf die Zeichnung beispielsweise näher erläutert. Es zeigen

  • Fig. 1 die Seitenansicht eines Ausführungsbeispiels des erfindungsgemässen Reinigungsfahrzeuges, das als Schneeräumungsfahrzeug mit einem Schneepflug und einem Kehrblasgerät ausgerüstet ist,
  • Fig. 2 die Draufsicht auf das in der Fig. 1 dargestellte Reinigungsfahrzeug,
  • Fig. 3 die Seitenansicht eines Ausführungsbeispieles des erfindungsgemässen Reinigungsfahrzeuges, das als Kehrsaugmaschine mit dem Kehrblasgerät und einem Kehrgut-Saugbehälter ausgerüstet ist,
  • Fig. 4 die Draufsicht auf das in der Fig. 3 dargestellte Reinigungsfahrzeug,
  • Fig. 5 in vereinfachter schaubildlicher Darstellung das Kehrblasgerät des erfindungsgemässen Reinigungsfahrzeuges, welches Kehrgerät zur Schneeräumung eingestellt ist, und
  • Fig. 6 in vereinfachter schaubildlicher Darstellung das Kehrblasgerät des erfindungsgemässen Reinigungsfahrzeuges, das für den Kehrsaugeinsatz vorbereitet ist.
The subject matter of the invention is explained in more detail with reference to the drawing, for example. Show it
  • 1 is a side view of an embodiment of the cleaning vehicle according to the invention, which is equipped as a snow removal vehicle with a snow plow and a sweeper.
  • 2 is a top view of the cleaning vehicle shown in FIG. 1,
  • 3 is a side view of an embodiment of the cleaning vehicle according to the invention, which is equipped as a sweeper with the sweeper and a sweeping suction container,
  • 4 shows the top view of the cleaning vehicle shown in FIG. 3,
  • Fig. 5 in a simplified diagrammatic representation the sweeper of the cleaning vehicle according to the invention, which sweeper is set to clear snow, and
  • Fig. 6 in a simplified diagrammatic representation, the sweeper of the cleaning vehicle according to the invention, which is prepared for the sweeping use.

Das in den Fig. 1 bis 4 dargestellte Reinigungsfahrzeug besitzt einen Fahrgestellrahmen 1, der über nicht dargestellte Mittel auf eine vordere lenkbare Planetenachse 2 und eine hintere, wahlweise ebenfalls lenkbare Planetenachse 3 abgestützt ist. Im vorderen Bereich des Fahrgestellrahmens 1 befindet sich ein Fahrerhaus 4. Hinter und unterhalb des Fahrerhauses 4 ist ein Fahrmotor 5 angeordnet, welcher die vordere Planetenachse 2 und wahlweise auch die hintere Planetenachse 3 antreibt. Eine nicht dargestellte, im Fahrerhaus 4 angeordnete Lenkungsartumschaltevorrichtung gestattet, dass im Fahrerhaus je nach Bedarf auf die Vorderrad-, Allrad- oder Hundeganglenkung geschaltet werden kann. Bei Allradlenkung folgt die Hinterachse genau der Spur der Vorderachse und bewirkt damit zwangsläufig auch bei Kurvenfahrt eine Führung des weiter unten näher beschriebenen Kehrblasgerätes in der Spur des Reinigungsfahrzeuges. Bei Umschaltung auf Hundeganglenkung schwenken alle vier Räder in der gleichen Richtung aus, was zu einer Diagonalverschiebung des Reinigungsfahrzeuges führt. Damit kann Hindernissen ausgewichen werden und die Manövrierarbeiten werden dadurch erleichtert.The cleaning vehicle shown in FIGS. 1 to 4 has a chassis frame 1, which is supported by means not shown on a front steerable planetary axis 2 and a rear, optionally also steerable planetary axis 3. In the front area of the chassis frame 1 there is a driver's cab 4. Behind and below the driver's cab 4 there is a drive motor 5 which drives the front planetary axle 2 and optionally also the rear planetary axle 3. A steering mode switching device (not shown) arranged in the driver's cab 4 allows the driver to switch to the front-wheel, four-wheel or dog-gear steering as required. With all-wheel steering, the rear axle follows the track of the front axle and inevitably causes the sweeper to be guided in the track of the cleaning vehicle even when cornering. When switching to crab steering, all four wheels swivel in the same direction, which leads to a diagonal shift of the cleaning vehicle. Obstacles can be avoided and maneuvering is made easier.

Der Fahrgestellrahmen 1 ist im Bereich zwischen der vorderen und der hinteren Planetenachse 2 bzw. 3 durch Abkröpfung so ausgebildet, dass ein möglichst hoher Freiraum zwischen der Fahrbahn und dem Fahrgestellrahmen zur Aufnahme des genannten Kehrblasgerätes entsteht.The chassis frame 1 is formed in the area between the front and rear planetary axes 2 and 3 by cranking in such a way that the greatest possible free space is created between the roadway and the chassis frame for receiving the sweeper.

Im Bereich über der hinteren Planetenachse 3 ist ein Arbeitsmotor 6 angeordnet. Dieser treibt zwei oder je nach Bedarf mehr nicht dargestellte hydraulische Schwenckolbenpümpen an, die ihrerseits über zwei nicht dargestellte Achsialkolbenmotoren ein leistungsstarkes Radialgebläse 7 und einen nicht gezeichneten Kehrbürstenantrieb antreiben.A working motor 6 is arranged in the area above the rear planetary axis 3. This drives two or, as required, more hydraulic rotary piston pumps, which in turn drive a powerful radial blower 7 and a brush brush drive, not shown, via two axial piston motors, not shown.

Der Ausgang 8 des Radialgebläses 7 ist über eine Rohrleitung 9 mit einem';hohlen Träger 10, der gleichzeitig als Hauptblasluftkanal dient, verbunden. Der Träger 10 ist über eine am Fahrgestellrahmen 1 befestigte Dreipunktaufhängung 11 und einen am Träger 10 befestigten Drehkranz 12 um eine vertikale Achse schwenkbar mit dem Fahrgestellrahmen 1 verbunden. Von den beiden extremen Schwenkbewegungen des Trägers 10 sind in den Fig. 2 und 4 je eine strichpunktiert dargestellt. Mit dem Träger 10 ist über Lenker 13 eine Kehrbürstenwalze 14 verbunden, die über nicht dargestellte hydraulische Antriebszylinder vom Boden abgehoben bzw. darauf abgesenkt werden kann. Die Kehrbürstenwalze 14 ist zweiteilig ausgebildet und kann durch einen nicht dargestellten, in der Mitte der Kehrbürstenwalze 14 angeordneten Kettenantrieb in Drehung versetzt werden. Ein Ausführungsbeispiel eines solchen Kettenantriebes ist mit Bezug auf die Fig. 9 in der eingangs genannten, unter der Nummer 0 189 371 veröffentlichten europäischen Patentanmeldung näher beschrieben.The outlet 8 of the radial blower 7 is connected via a pipe 9 to a hollow support 10, which also serves as the main blowing air duct. The carrier 10 is connected to the chassis frame 1 via a three-point suspension 11 fastened to the chassis frame 1 and a turntable 12 fastened to the carrier 10 so that it can pivot about a vertical axis. Of the two extreme pivoting movements of the carrier 10, one in each case is shown in broken lines in FIGS. 2 and 4. With the carrier 10, a sweeping brush roller 14 is connected via a handlebar 13, which can be lifted off or lowered onto the floor via hydraulic drive cylinders (not shown). The sweeping brush roller 14 is formed in two parts and can be rotated by a chain drive (not shown) arranged in the middle of the sweeping brush roller 14. An embodiment of such a chain drive is described in more detail with reference to FIG. 9 in the European patent application mentioned at the beginning, published under number 0 189 371.

Ueber der Kehrbürstenwalze 14 befindet sich ein gekrümmter Schutzschild 15, der sich über die ganze Länge der Kehrbürstenwalze 14 erstreckt. Der Schutzschild 15 bedeckt die obere Hälfte der Kehrbürstenwalze 14 und verhindert, dass Schnee, Staub oder Schmutz von derselben nach oben geschleudert wird. Vom hinteren Ende des Schutzschildes 15 erstreckt sich ein Gummischutzlappen 16 nach unten. Auf der Frontseite der Kehrbürstenwalze 14 ist ein Abdeckblech 17 angeordnet, das zusammen mit der Kehrbürstenwalze 14 und dem Boden 18 einen sich über die ganze Länge der Kehrbürstenwalze 14 erstreckenden Blaskanal 19 bildet.Above the sweeping brush roller 14 is a curved protective shield 15 which extends over the entire length of the sweeping brush roller 14. The protective shield 15 covers the upper half of the sweeping brush roller 14 and prevents snow, dust or dirt from being thrown upwards by the same. A rubber protective flap 16 extends downward from the rear end of the protective shield 15. A cover plate 17 is arranged on the front of the sweeping brush roller 14 and, together with the sweeping brush roller 14 and the base 18, forms a blowing duct 19 which extends over the entire length of the sweeping brush roller 14.

Das in den Fig. 1 und 2 dargestellte Reinigungsfahrzeug ist zum Schneeräumen vorbereitet. Zu diesem Zweck ist auf der Frontseite des Reinigungsfahrzeuges ein Schneepflug 20 bekannter Bauart montiert. Der Schneepflug 20 kann um eine vertikale Achse geschwenkt werden, damit der Schnee nach links oder nach rechts geschoben wird.The cleaning vehicle shown in FIGS. 1 and 2 is prepared for snow removal. For this purpose, a snow plow 20 of a known type is mounted on the front of the cleaning vehicle. The snow plow 20 can be pivoted about a vertical axis so that the snow is pushed to the left or to the right.

Die Fig. 5 zeigt in vereinfachter schaubildlicher Darstellung das für den Winterbetrieb eingestellte Kehrblasgerät, das den als Hauptblaskanal dienenden Träger 10, welcher über den Drehkranz 12 und die Dreipunktaufhängung 11 mit dem in der Fig. 5 nicht dargestellten Fahrgestellrahmen 1 um eine vertikale Achse schwenkbar verbunden ist, und die über in der Fig. 5 nicht gezeichnete Lenker 13 anheb- und absenkbare Kehrbürstenwalze 14 umfasst. In der Mitte des Trägers 10 und unterhalb des Drehkranzes 12 ist eine einstellbare Umlenkvorrichtung 21 mit einer nicht sichtbaren und um eine horizontale Achse schwenkbare Luftumlenkklappe angeordnet, die über einen Bedienungshebel 22 in eine von drei Stellungen gebracht werden kann.FIG. 5 shows a simplified diagrammatic representation of the sweeper device set for winter operation, which connects the support 10 serving as the main blowing duct, which is pivotably connected about the vertical frame via the turntable 12 and the three-point suspension 11 to the chassis frame 1 (not shown in FIG. 5) 5, and comprises the sweeping brush roller 14, which can be raised and lowered via the handlebars 13 (not shown in FIG. 5). In the middle of the carrier 10 and below the turntable 12, an adjustable deflection device 21 is arranged with an invisible and pivotable about a horizontal axis air deflection flap which can be brought into one of three positions via an operating lever 22.

In der in der Fig. 5 gezeigten Stellung des Bedienungshebels 22 ist die nicht sichtbare Luftumlenkklappe ebenfalls bezogen auf die Fig. 5 nach rechts verschwenkt, so dass alle über die Rohrleitung 9 in die Umlenkvorrichtung 21 eintretende Luft in die linke Hälfte des Trägers 10 geführt wird. An der bezogen auf die Fig. 5 linken Hälfte des durch den Träger 10 gebildeten Hauptblasluftkanals sind zwei Blasdüsen 23 und 24 angeschlossen, die durch das in der Fig. 5 nicht gezeichnete Abdeckblech 17 in den Blaskanal 19 münden und nach rechts gerichtet sind. An der bezogen auf die Fig. 5 rechten Hälfte des durch den Träger 10 gebildeten Hauptblasluftkanals sind zwei Blasdüsen 25 und 26 angeschlossen, die sich durch die nicht sichtbare Abdeckung 17 in den Blaskanal 19 erstrecken und nach links gerichtet sind. An jedem Ende des durch den Träger 10 gebildeten Hauptblasluftkanals ist je eine verschliessbare und in der Arbeitsrichtung hinter dem Gummischutzlappen 16 angeordnete Blasdüse 27 bzw. 28 angeschlossen. Diese beiden verschliessbaren Blasdüsen 27 und 28 sind aufeinander zu gerichtet.In the position of the operating lever 22 shown in FIG. 5, the invisible air deflection flap is also pivoted to the right in relation to FIG. 5, so that all air entering the deflection device 21 via the pipeline 9 is guided into the left half of the carrier 10 . On the left half of FIG. 5 of the main blowing air duct formed by the carrier 10, two blowing nozzles 23 and 24 are connected, which open into the blowing duct 19 through the cover plate 17, not shown in FIG. 5, and are directed to the right. On the right half of FIG. 5 of the main blowing air duct formed by the carrier 10, two blowing nozzles 25 and 26 are connected, which extend through the non-visible cover 17 into the blowing duct 19 and are directed to the left. At each end of the main blowing air duct formed by the carrier 10 there is a closable blowing nozzle 27 and 28, which is arranged behind the rubber protective flap 16 in the working direction. These two closable blow nozzles 27 and 28 are directed towards each other.

In der Arbeitsrichtung vor jeder Hälfte der Kehrbürstenwalze 14 ist je ein Saugmund 29 bzw. 30 unter dem Abdeckblech 17 angeordnet, siehe Fig. 1 und 2. Die Saugmünder 29 und 30 sind über parallelogrammartige Lenker 31 mit der Unterseite des Trägers 10 verbunden und können mit Hilfe von nicht dargestellten hydraulischen Arbeitszylindern in eine obere Stellung angehoben oder in die Arbeitsstellung abgesenkt werden. An jeden Saugmund 29 und 30 ist je ein Schmutzsaugrohr 32 bzw. 33 angeschlossen.In the working direction in front of each half of the sweeping brush roller 14, a suction mouth 29 or 30 is arranged under the cover plate 17, see FIGS. 1 and 2. The suction mouths 29 and 30 are connected to the underside of the carrier 10 via parallelogram-like links 31 and can be used with With the help of hydraulic working cylinders, not shown, be raised to an upper position or lowered into the working position. A dirt suction pipe 32 or 33 is connected to each suction mouth 29 and 30.

Auf der Oberseite der Rohrleitung 9 ist ein Luftauslassstutzen 34 angeordnet, der mittels einer gestrichelt angedeuteten Klappe 35 verschliessbar ist. Die Klappe 35 kann durch einen Bedienungshebel 36 betätigt werden.An air outlet connection 34 is arranged on the top of the pipeline 9 and can be closed by means of a flap 35 indicated by dashed lines. The flap 35 can be operated by an operating lever 36.

Wie schon erwähnt, ist das in der Fig. 5 gezeigte Kehrblasgerät für den Winterbetrieb, d.h. zur Schneeräumung, eingestellt. Die Bedienungshebel 22 und 36 befinden sich in der gezeichneten Stellung, so dass die gesamte vom Radialgebläse 7 geförderte Luftmenge in die bezogen auf die Fig. 5 linke Hälfte des durch den Träger 10 gebildeten Hauptblasluftkanals und somit zu den Blasdüsen 23, 24 und 27 gelangt. Durch die gleichgerichteten Blasdüsen 23 und 24 wird innerhalb des Blaskanals 19, siehe Fig. 1, vor der Kehrbürstenwalze 14 ein Luftstrom erzeugt, der allen im Blaskanal 19 befindlichen losen Schnee bezogen auf die Fig. 5 nach rechts befördert. Allenfalls am Boden 18 haftender Schnee wird von der nachfolgenden Kehrbürstenwalze 14, die in der Richtung des Pfeiles 37 angetrieben wird, in den Blaskanal 19 gebürstet und vom genannten Luftstrom erfasst. Schliesslich wird ein hinter der Kehrbürstenwalze 14 allfällig zurückbleibender Rest von losem Schnee durch die Blasdüse 27 weggeblasen.As already mentioned, the reverse blowing device shown in FIG. 5 is set for winter operation, ie for snow removal. The operating levers 22 and 36 are in the position shown, so that the entire amount of air conveyed by the radial fan 7 reaches the left-hand half of the main blowing air duct formed by the carrier 10 in relation to FIG. 5 and thus to the blowing nozzles 23, 24 and 27. Through the rectified blow nozzles 23 and 24 is within the blow duct 19, see Fig. 1, before Sweeping brush roller 14 generates an air flow which conveys all loose snow in the blowing duct 19 to the right in relation to FIG. 5. At most, snow adhering to the ground 18 is brushed into the blow duct 19 by the subsequent sweeping brush roller 14, which is driven in the direction of the arrow 37, and is captured by the air flow mentioned. Finally, any remaining snow remaining behind the sweeping brush roller 14 is blown away by the blowing nozzle 27.

Die für die Schneeräumung nicht benötigten Saugmünder 29 und 30 befinden sich in ihrer obersten Stellung, damit der genannte Luftstrom möglichst wenig behindert wird.The suction mouths 29 and 30 which are not required for snow removal are in their uppermost position so that the air flow mentioned is hampered as little as possible.

Falls der Schnee durch das Kehrblasgerät bezogen auf die Fig. 5 nach links befördert werden soll, so wird der Bedienungshebel 22 in die andere Endstellung verbracht, was zur Folge hat, dass die vom Radialgebläse 7 geförderte Luft in die rechte Hälfte des durch den Träger 10 gebildeten Hauptblasluftkanals und zu den Düsen 25, 26 und 28 gelangt.5, the operating lever 22 is moved into the other end position, with the result that the air conveyed by the radial blower 7 flows into the right half of the carrier 10 formed main blowing air channel and reaches the nozzles 25, 26 and 28.

Die Fig. 3 und 4 zeigen das Reinigungsfahrzeug, das für den Saugkehrbetrieb vorbereitet ist. Zu diesem Zweck ist auf den Fahrgestellrahmen 1 ein Kehrgutsaugbehälter 38 aufgesetzt, der zum Entleeren um eine horizontale Achse 39 kippbar ist. Die Rückseite des Kehrgutsaugbehälters 38 ist durch einen Verschlussdeckel 40 dicht verschliessbar. Die Schmutzsaugrohre 32 und 33 sowie eine mit dem Eingang 41 des Radialgebläses 7 verbindbarer Luftsaugkanal 42 sind über eine in einer geneigten Ebene angeordnete Trennstelle 43 lösbar an den Kehrgutsaugbehälter 38 angeschlossen. Innerhalb des Kehrgutsaugbehälters 38 befindet sich ein gestrichelt angedeutetes Filtersieb 44, das den angesaugten Schmutz vom Radialgebläse 7 fernhält. Das in der Fig. 6 dargestellte Kehrblasgerät ist für den Kehrsaugbetrieb eingestellt. Der Bedienungshebel 22 befindet sich in der Mittelstellung, so dass Luft in beide Hälften des durch den Träger 10 gebildeten Hauptblasluftkanals und zu den Blasdüsen 23, 24, 25 und 26 gelangt. Die hinter dem Gummischutzlappen 16 angeordneten Blasdüsen 27 und 28 sind durch nicht dargestellte Mittel, z.B. passende Deckel, verschlossen. Weiter ist die Klappe 35 im Luftauslassstutzen 34 teilweise geöffnet, so dass ein Teil der durch das Radialgebläse 7 geförderten Luft ins Freie austreten kann. Auf diese Weise entsteht im Blaskanal 19 ein leichter Unterdruck, wodurch verhindert wird, dass Staub aus dem Blaskanal 19 austritt. Im Kehrgutsaugbehälter 38 integriert, oder aber ausserhalb desselben, kann ein nicht dargestellter Wassertank für die nicht näher dargestellte Wassersprühanlage, die für die Staubbindung üblicherweise erforderlich ist, angeordnet sein.3 and 4 show the cleaning vehicle, which is prepared for the vacuum sweeping operation. For this purpose, a dirt hopper 38 is placed on the chassis frame 1, which can be tilted about a horizontal axis 39 for emptying. The rear of the sweepings suction container 38 can be closed tightly by a closure cover 40. The dirt suction pipes 32 and 33 and an air suction duct 42 which can be connected to the inlet 41 of the radial blower 7 are detachably connected to the sweeping material suction container 38 via a separation point 43 arranged in an inclined plane. Within the sweeping material suction container 38 there is a filter screen 44, indicated by dashed lines, which keeps the suctioned dirt away from the radial fan 7. The sweeper shown in Fig. 6 is set for sweeping operation. The operating lever 22 is in the middle position, so that air reaches both halves of the main blowing air duct formed by the carrier 10 and the blowing nozzles 23, 24, 25 and 26. The blowing nozzles 27 and 28 arranged behind the rubber protective flap 16 are by means not shown, e.g. matching lid, closed. Furthermore, the flap 35 in the air outlet connection 34 is partially open, so that part of the air conveyed by the radial fan 7 can escape to the outside. In this way, a slight negative pressure is created in the blow duct 19, which prevents dust from escaping from the blow duct 19. Integrated in the dirt hopper 38 or outside it, a water tank (not shown) can be arranged for the water spray system (not shown in more detail), which is usually required for dust binding.

Die Saugmünder 29 und 30 werden in die Arbeitsstellung abgesenkt und die Kehrbürsteriwalze 14 wird vergleichsweise zum Schneeräumbetrieb mit reduzierter Drehzahl in Richtung des Pfeiles 37 angetrieben. Das Radialgebläse 7 saugt Luft durch die Saugmünder 29 und 30, die Schmutzsaugrohre 32 und 33, den Kehrgutsaugbehälter 38 mit dem Filtersieb 44 und den Luftansaugkanal 42 an und bewirkt dadurch bei geschlossener Klappe 45, dass im Kehrgutsaugbehälter 38, den Saugrohren 32 und 33 und den Saugmündern 29 und 30 ein Unterdruck entsteht. Die Klappe 45 wird geöffnet, wenn bei vorbereitetem Winterbetrieb des Reinigungsfahrzeuges der Kehrgutsaugbehälter 38 nicht demontiert wird.The suction mouths 29 and 30 are lowered into the working position and the sweeping brush roller 14 is driven in the direction of arrow 37 at a reduced speed in comparison to snow clearing operation. The radial fan 7 sucks air through the suction mouths 29 and 30, the dirt suction pipes 32 and 33, the sweepings suction container 38 with the filter sieve 44 and the air suction duct 42 and thereby causes, when the flap 45 is closed, that in the sweepings suction container 38, the suction pipes 32 and 33 and the Suction mouths 29 and 30 creates a negative pressure. The flap 45 is opened when the sweeping material suction container 38 is not dismantled when the cleaning vehicle is in winter operation.

In den Saugmündern 29 und 30, und wenn erforderlich schon ausserhalb derselben, wird durch Zuführen von geringen Sprühwassermengen aus dem nicht dargestellten Wasserbehälter der Staub gebunden, so dass die durch das Filtersieb 44, das Radialgebläse 7 angesaugte resp. ausgeblasene Luft möglichst staubfrei ist. Die Kehrbürstenwalze 14 unterstützt die Arbeit der Blasdüsen 23 bis 26, indem sie festgesetzten Schmutz bzw. von den Blasdüsen nicht entferntes Kehrgut löst und in den Bereich der Blasdüsen 23 bis 26 vorwirft bzw. direkt von hinten den Saugmündern 29 und 30 zuführt.In the suction mouths 29 and 30, and if necessary outside the same, the dust is bound by supplying small amounts of spray water from the water tank (not shown), so that the radial fan 7 sucked in through the filter screen 44, respectively. blown air is as dust-free as possible. The sweeping brush roller 14 supports the work of the blowing nozzles 23 to 26 by loosening stuck dirt or debris not removed from the blowing nozzles and throwing them into the area of the blowing nozzles 23 to 26 or feeding them directly from behind to the suction mouths 29 and 30.

Auf diese Weise ist es möglich, durch geringe Umstellarbeiten das gleiche Reinigungsfahrzeug mit dem gleichen Arbeitsaggregat sowohl als leistungsfähiges Kehrblasfahrzeug zum Schneeräumen als auch als ebenso leistungsfähiges Kehrsaugfahrzeug zu verwenden und dadurch eine Ganzjahresarbeitsmaschine mit all ihren Vorteilen zu schaffen. Für die Bedienungsmannschaft wird die Handhabung somit vertrauter und damit der Einsatz sicherer. Die dauernde Einsatzbereitschaft wird besser sichergestellt und der Platzbedarf für die Unterbringung insgesamt ist geringer.In this way, it is possible to use the same cleaning vehicle with the same work unit as a powerful sweeper for snow removal as well as an equally powerful sweeper, and thus create a year-round work machine with all its advantages. For the operating team, the handling becomes more familiar and thus the use safer. The permanent operational readiness is better ensured and the overall space requirement for the accommodation is less.

Claims (5)

1. A vehicle for cleaning ground surfaces provided with a rigid pavement, with a chassis frame (1), on which are mounted a traction engine (5), a working engine (6) and a fan (7) which can be driven by the working engine, with a sweeping-brush roller (14) which is pivotable about a substantially vertical axis and which can be driven by the said or by another working engine, a main blown-air duct (10) connectible to the outlet of the fan, pivotable blowing nozzles (23, 24, 25, 26) connected to said main blown-air duct and a cover (17) disposed in front of the sweeping-brush roller in the direction of operational travel to form a blow duct (19) which runs substantially parallel to the longitudinal axis of the sweeping-brush roller, characterized in that within the blow duct (19), there is at least one suction port (29; 30) which is connectible to the intake of the ventilator (7) and raisably and lowerably disposed, in that there are at least two blowing nozzles (23, 24; 25, 26) which are directed towards the suction port, and in that there is a deflector device (21) for leading the airflow produced by the fan (7) either to the blowing nozzle (23; 24) directed in the longitudinal direction of the blow duct (19) from right to left, or to the blowing nozzle (25; 26) directed in the longitudinal direction of the blow duct (19) from left to right or,to all the blowing nozzles (23, 24; 25, 26).
2. A cleaning vehicle according to claim 1, characterized in that a pipe-line (9) between the outlet (8) of the fan (7) and the main blown-air duct (10) comprises an air-outlet pipe piece (34) with a flap (35) for allowing part of the air delivered by the fan (7) to exit when said cleaning vehicle is adjusted for vacuum-sweeping operation.
3. A cleaning vehicle according to claim 1 or 2, characterized in that a vacuum-sweepings container (38) is disposed tiltably and detachably on the chassis frame (1), in that the exhaust port of the vacuum-sweepings container (38) is connectible with the intake (41) of the fan (7) via an air-suction duct (42) and in that a flap (45) is disposed within the air-suction duct (42) for directly drawing in air from outside when the cleaning vehicle is adjusted for snow clearance.
4. A cleaning vehicle according to one of claims 1 to 3, characterized in that a device for reducing the speed of the sweeping brush roller (14) during the vacuum-sweeping operation is disposed between one working engine (6) and the drive for the sweeping-brush roller (14).
5. A cleaning vehicle according to one of claims 1 to 3, characterized in that the sweeping-brush, roller (14) is directly connected to a drive engine in such a way that the drive speed is variable, enabling the sweeping-brush roller (14) to rotate at a reduced speed during the vacuum-sweeping operation, and in that the fan (7) is also connected to a drive engine whose drive speed is independent of that of the drive engine of the sweeping-brush roller.
EP88810242A 1987-04-23 1988-04-15 Apparatus for cleaning hard top ground surfaces Expired - Lifetime EP0288436B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88810242T ATE60636T1 (en) 1987-04-23 1988-04-15 CLEANING VEHICLE FOR CLEANING HARD FLOOR SURFACES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1557/87 1987-04-23
CH155787 1987-04-23

Publications (2)

Publication Number Publication Date
EP0288436A1 EP0288436A1 (en) 1988-10-26
EP0288436B1 true EP0288436B1 (en) 1991-01-30

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EP88810242A Expired - Lifetime EP0288436B1 (en) 1987-04-23 1988-04-15 Apparatus for cleaning hard top ground surfaces

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US (1) US4858270A (en)
EP (1) EP0288436B1 (en)
JP (1) JPS6448912A (en)
CN (1) CN1012831B (en)
AT (1) ATE60636T1 (en)
CA (1) CA1304545C (en)
DE (1) DE3861700D1 (en)
ES (1) ES2021160B3 (en)
GR (1) GR3001838T3 (en)

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GR3001838T3 (en) 1992-11-23
CA1304545C (en) 1992-07-07
ES2021160B3 (en) 1991-10-16
CN1012831B (en) 1991-06-12
ATE60636T1 (en) 1991-02-15
JPH0581681B2 (en) 1993-11-15
DE3861700D1 (en) 1991-03-07
JPS6448912A (en) 1989-02-23
CN88101993A (en) 1988-11-02
US4858270A (en) 1989-08-22
EP0288436A1 (en) 1988-10-26

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