EP0164315A2 - Road-sweeping apparatus - Google Patents
Road-sweeping apparatus Download PDFInfo
- Publication number
- EP0164315A2 EP0164315A2 EP85810257A EP85810257A EP0164315A2 EP 0164315 A2 EP0164315 A2 EP 0164315A2 EP 85810257 A EP85810257 A EP 85810257A EP 85810257 A EP85810257 A EP 85810257A EP 0164315 A2 EP0164315 A2 EP 0164315A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- suction
- container
- street sweeper
- suction nozzle
- 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.)
- Withdrawn
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4063—Driving means; Transmission means therefor
- A47L11/4069—Driving or transmission means for the cleaning tools
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
- A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4002—Installations of electric equipment
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4011—Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
- A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
- A47L11/4022—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids with means for recycling the dirty liquid
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4027—Filtering or separating contaminants or debris
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4027—Filtering or separating contaminants or debris
- A47L11/4033—Means for cleaning filters
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4036—Parts or details of the surface treating tools
- A47L11/4044—Vacuuming or pick-up tools; Squeegees
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/408—Means for supplying cleaning or surface treating agents
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/408—Means for supplying cleaning or surface treating agents
- A47L11/4088—Supply pumps; Spraying devices; Supply conduits
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- 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
- E01H1/0845—Apparatus dislodging all of the dirt by suction ; Suction nozzles with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers
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- 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
- E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
- E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
- E01H1/103—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers in which the soiled loosening or washing liquid is removed, e.g. by suction
Definitions
- the present invention relates to a street sweeper with at least one suction nozzle, a waste container, a suction device and a liquid line in order to conduct liquid from the waste container into the area of the suction nozzle and to bind the dust to the liquid.
- a street sweeper with negative pressure delivery has become known, in which the waste is moistened on the way from the pick-up point to the collecting container in the sweeper.
- the rubbish is conveyed from the intake point directly into the collecting container, which is under vacuum, and is moistened in the process.
- the prior art also includes a floor cleaning and maintenance machine with a cleaning tool, to which a cleaning agent is fed from nozzles at a downward gradient and in which the mixture of the cleaning agent and the air which enters between the tool and the surface to be treated is extracted.
- the cleaning tool is a hollow body in the form of a truncated cone, which points downward with the further end, in which the nozzles open tangentially and inclined to the surface to be treated near its lower edge. This creates a vortex that loosens the liquid flowing out of the nozzles and the incoming air, which distributes the liquid evenly, loosens and sucks up the dirt.
- the more recent state of the art also includes a suction cleaning device with a closed chamber for holding dust or similar material, together with an added liquid, such as water.
- This device has a suction channel with an outlet end connected to the chamber and with an inlet end in the immediate vicinity of a surface to be cleaned for receiving dust or similar material.
- This device is provided with a return device for supplying water or another liquid from the chamber into the suction channel for the purpose of mixing with dust or similar material which is drawn into the suction channel by the suction effect.
- the present invention aims to provide a street sweeper that works with regard to water circulation without the risk of leakage and still has the advantage of not having to use the normal dirt-laden water for more sensitive areas of the street sweeper to be sprayed.
- Another purpose of the present invention is to provide such a machine in which the line carrying the wetting water for the dust can be removed without the risk of the waste / waste water container leaking when it is emptied.
- the wetting water of such a street sweeper is prevented from escaping by arranging in the liquid line a closing element which only opens when there is a suction air stream.
- the street sweeper has a garbage container 45 which tapers conically downwards and which simultaneously serves as a dirt and circulating water reservoir. It is provided with a container lid 47 and is pivotally held in a tipper bearing 48 for emptying.
- a suction nozzle 35 connected via a flexible suction hose 36 to a knee tube 37, serves to take up street rubbish in order to feed it through the hose 36 and the knee tube 37 attached to the container 45 to the interior of the container 45.
- a suction blower 38 sucks in the air 39, which is discharged from dust and water, through the screen grille 46 and blows it through an exhaust port 40 into the atmosphere.
- the mixture of moist waste and water which precipitates in the upper part of the waste container 45 reaches the lower part of the container 45 and, as far as the fine particles are concerned, is held and washed away by the filter 34, after which it can collect in the lower part of the container 45.
- a filler neck 26 for so-called recuperation water leads via a check valve 27 into the humidification water line, in which there is a water slide 28, which normally blocks the way of the water flowing in from the container 45.
- This slide 28 is connected via a shift lever 28a to a double-acting hydraulic cylinder 8, which then opens the slide 28 in a controlled manner as soon as it is sucked blower 38 an air flow is generated.
- a pin 51 is fastened in the connecting piece 50.
- the bottom valve 29 with valve seat 52 and spring-loaded closing body 53 automatically goes into the closed position when the container 45 is tilted up and prevents the water filling 33 from escaping from the container 45.
- the pin 51 presses the closing body 53 off the seat 52 into its open position as shown in the figure.
- the humidifying water enters the suction channel in the area of the suction nozzle 35 when the street sweeper is operating, and there, in particular, humidifies the finer dust particles of the refuse that are sucked up from the street.
- the hydraulic drive and control system includes a main hydraulic pump 1, which is driven by a diesel engine 2.
- a filling pump 3 is assigned to the hydraulic pump for the method.
- a ydroyakradpumpe H 4 serves to drive the fan 38 by means of a hydraulic motor 6, while a hydraulic gear pump 5 serves for generating the movements.
- the hydraulic oil is collected in two hydraulic oil tanks 7.
- the aforementioned double-acting hydraulic cylinder 8 for opening and closing the water slide 28
- This hydraulic system also includes a pressure switch 10 and a tilt cylinder 11 for tilting the refuse container 45 and a hydraulic cylinder 12 for actuating the container lid 47.
- the control circuit for locking the dampening water blocking slide 29 includes a magnet 13 as well as a hydraulically operated electrical switch 14 and an on / off switch 15 for water recuperation.
- the electrical switch 14 is switched via the pressure switch 10, which causes the on / off switch 15 to be switched and thus the water slide 28 to be opened by actuating the hydraulic cylinder 8 via the magnet 13. If for any reason the pressure at the switch 10 drops below an adjustable minimum, the water supply is accordingly interrupted by pivoting the water slide 28 into the closed position.
- an open fresh water system that is independent of this system is provided, with a fresh water tank 16, through the filler neck 17 of which fresh water can be filled.
- a water filter 18 is located in a supply line in front of a water pump 19, the V-belt drive 20 of which is shown schematically.
- a maximum pressure valve 21 enables an overflow from the pressure side into the suction side of the water pump 19.
- the water pump 19 supplies two water regulators in accordance with the position tap 23 a water nozzle 24 to the plate broom 25 of the machine or a water injection nozzle 22 which is arranged in the elbow 37.
- the fresh water tank 16 with a volume of 200 liters only allows a very limited range of action for the machine, since in addition to the nozzles 24 for the plate brooms and the spray nozzle 22 for the elbow pipe, other machines for lubricating the dirt to be conveyed in the suction line with additional nozzles have considerable amounts of water from the fresh water tank.
- the water recuperation system now allows an additional 80 - 150 liters of water 33 to be filled into the waste bin 45 before starting work. This water is used exclusively for the lubrication of the suction mouth 35, the suction hose 36 and the elbow 37. The fresh water nozzle 22 is only used in the case of extremely extreme dirt accumulation.
- the water accumulating with the dirt is processed in the waste bin 45 and used again and again.
- the water loss is very small and is replaced by adding fresh water to the broom 25.
- Fresh water is poured into the refuse container 45 via the filler neck 26 and the check valve 27.
- the bottom valve 29 is open.
- the amount of water is approx. 80 - 150 l, depending on the degree of pollution.
- the water slide 28 is blocked, i.e. no water flows to the suction mouth.
- the sieve 34 is thereby cleaned of dirt.
- the sweepings 42 with the water from the nozzles 24 are sucked up in the suction mouth 35.
- the suction force in the entire suction line now draws in the water of the water filling 33 through the water nozzle 31, is carried along with the garbage 43 and gets back into the garbage container 45.
- the water "lubricates" the entire suction line perfectly and prevents the same from becoming blocked.
- the water In the waste bin 45, the water is always above the dirt and can flow back to the suction mouth at any filling level via the sieve 34 which extends over the entire height. The water cycle is thus closed.
- the suction force in the suction pipe is generated by evacuation of the dirt container by the blower 38.
- the waste container With the hydraulic tilt cylinder 11, the waste container can be tipped over the pivot bearing 48.
- the bottom valve 29 closes immediately during the tilting process and prevents water or dirty water from flowing out.
- valve can be cleaned well from the outside.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
- Prevention Of Fouling (AREA)
- Cleaning In General (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Strassenkehrmaschine mit mindestens einer Saugdüse, einem Kehrichtbehälter, einer Saugvorrichtung sowie einer Flüssigkeitsleitung, um Flüssigkeit aus dem Kehrichtbehälter in den Bereich der Saugdüse zu leiten und ein Binden des Staubes an die Flüssigkeit zu erwirken.The present invention relates to a street sweeper with at least one suction nozzle, a waste container, a suction device and a liquid line in order to conduct liquid from the waste container into the area of the suction nozzle and to bind the dust to the liquid.
Es ist eine Strassenkehrmaschine mit Unterdruckförderung bekannt geworden, bei welcher die Befeuchtung des Kehrichts auf dem Wege von der Aufnahmestelle zum Sammelbehälter in der Kehrmaschine erfolgt. Der Kehricht wird von der Aufnahmestelle unmittelbar in den unter Unterdruck stehenden Sammelbehälter befördert und dabei befeuchtet. (DE-PS 824 800)A street sweeper with negative pressure delivery has become known, in which the waste is moistened on the way from the pick-up point to the collecting container in the sweeper. The rubbish is conveyed from the intake point directly into the collecting container, which is under vacuum, and is moistened in the process. (DE-PS 824 800)
Zum Stande der Technik gehört ferner eine Fussbodenreinigungs- und Pflegemaschine mit einem Reinigungswerkzeug, dem aus Düsen unter Gefälle ein Reinigungsmittel zugeführt wird und bei dem das Gemisch aus dem Reinigungsmittel und der Luft, die zwischen dem Werkzeug und der zu behandelnden Fläche zutritt, abgesaugt wird. Dabei ist das Reinigungswerkzeug ein Hohlkörper in Form eines Kegelstumpfes, der mit dem weiteren Ende nach abwärts zeigt, bei dem in der Nähe seines unteren Randes die Düsen tangential und zu der zu behandelnden Fläche geneigt münden. Dadurch entsteht ein Wirbel, der den Düsen entströmenden Flüssigkeit und der zugetretenen Luft, der die Flüssigkeit gleichmässig verteilt, den Schmutz löst und aufsaugt. (DE-PS 948 081) Zum neueren Stande der Technik gehört ebenfalls eine Saugreinigungsvorrichtung mit einer geschlossenen Kammer zum Aufnehmen von Staub oder ähnlichem Material, zusammen mit einer beigemischten Flüssigkeit, etwa Wasser. Diese Vorrichtung weist einen Saugkanal auf mit einem mit der Kammer in Verbindung stehenden Austrittsende sowie mit einem Einlassende in unmittelbarer Nähe einer zu reinigenden Oberfläche zum Aufnehmen von Staub oder ähnlichem Material. Diese Vorrichtung ist mit einer Rücklaufeinrichtung versehen, um Wasser oder eine andere Flüssigkeit von der Kammer in den Saugkanal zwecks Vermischen mit Staub oder ähnlichem Material zuzuleiten, das durch die Saugwirkung in den Saugkanal hineingezogen wird. Dabei befindet sich in der Rücklaufleitung zur Zuführung von Wasser in die Saugleitung der Luft eine Pumpe. (DE-OS 2 545 137)The prior art also includes a floor cleaning and maintenance machine with a cleaning tool, to which a cleaning agent is fed from nozzles at a downward gradient and in which the mixture of the cleaning agent and the air which enters between the tool and the surface to be treated is extracted. The cleaning tool is a hollow body in the form of a truncated cone, which points downward with the further end, in which the nozzles open tangentially and inclined to the surface to be treated near its lower edge. This creates a vortex that loosens the liquid flowing out of the nozzles and the incoming air, which distributes the liquid evenly, loosens and sucks up the dirt. (DE-PS 948 081) The more recent state of the art also includes a suction cleaning device with a closed chamber for holding dust or similar material, together with an added liquid, such as water. This device has a suction channel with an outlet end connected to the chamber and with an inlet end in the immediate vicinity of a surface to be cleaned for receiving dust or similar material. This device is provided with a return device for supplying water or another liquid from the chamber into the suction channel for the purpose of mixing with dust or similar material which is drawn into the suction channel by the suction effect. There is a pump in the return line for supplying water to the air suction line. (DE-OS 2 545 137)
Obschon diese Pumpe bei der letzterwähnten Ausführung das Wasser aus dem Kehrichtbehälter am mühelosen Zufliessen in die Saugleitung bei abgestellter Pumpe hindert, ist diese Konstruktion diesbezüglich-unbefriedigend, als sie ein weiteres schadenanfälliges Element, nämlich die Pumpe, aufweist und diese es nicht verhüten kann, dass bei abgestelltem Sauggebläse Wasser in die Saugleitung gelangt und mithin bei längeren Stillstandszeiten das den Kehricht aufnehmende Reservoir, welches ebenfalls als Wasserreservoir dient, ausläuft. Den gleichen Nachteil des Auslaufens weisen auch die beiden andern vorerwähnten Vorveröffentlichungen auf. Aus diesem Grunde bezweckt die vorliegende Erfindung die Schaffung einer Strassenkehrmaschine, welche bezüglich Wasserkreislauf ohne Gefahr des Auslaufens arbeitet und trotzdem den Vorteil aufweist, für heiklere zu besprühende Stellen der Strassenkehrmaschine nicht das normale schmutzbeladende Wasser verwenden zu müssen.Although this pump prevents the water from the garbage container from flowing effortlessly into the suction line when the pump is switched off, this construction is unsatisfactory in this regard, since it has another damage-prone element, namely the pump, and it cannot prevent it When the suction fan is switched off, water gets into the suction line and, in the event of longer downtimes, the waste container which also serves as a water reservoir runs out. The same two disadvantages of the expiry also have the two other previously mentioned prior publications. For this reason, the present invention aims to provide a street sweeper that works with regard to water circulation without the risk of leakage and still has the advantage of not having to use the normal dirt-laden water for more sensitive areas of the street sweeper to be sprayed.
Ein weiterer Zweck der vorliegenden Erfindung liegt in der Schaffung einer derartigen Maschine, bei welcher ohne Gefahr des Auslaufens des Kehricht/Schmutzwasserbehälters bei dessen Entleerung die das Benetzungswasser für den Staub führende Leitung entfernt werden kann.Another purpose of the present invention is to provide such a machine in which the line carrying the wetting water for the dust can be removed without the risk of the waste / waste water container leaking when it is emptied.
Das Auslaufen des Benetzungswassers einer derartigen Strasssenkehrmaschine wird erfindungsgemäss dadurch verhütet, dass in der Flüssigkeitsleitung ein nur bei vorhandenem Saugluftstrom öffnendes Schliessorgan angeordnet ist.According to the invention, the wetting water of such a street sweeper is prevented from escaping by arranging in the liquid line a closing element which only opens when there is a suction air stream.
Ein Ausführungsbeispiel des Erfindungsgegenstandes wird anschliessend beispielsweise anhand einer Zeichnung erläutert. Es zeigen:
- Fig. 1 in gemischt schematisch-konstruktiver Darstellung den Innenaufbau einer Strassenkehrmaschine mitentsprechender Schaltung von Antriebs- und Steueraggregaten,
- Fig. 2 das Bodenventil zum Kehrichtbehälter in vergrösserter Darstellung.
- 1 is a mixed schematic-constructive representation of the internal structure of a street sweeper with a corresponding circuit of drive and control units,
- Fig. 2 shows the bottom valve to the rubbish bin in an enlarged view.
Die Strassenkehrmaschine weist einen nach unten konisch zusammenlaufenden Kehrichtbehälter 45 auf, welcher gleichzeitig als Schmutz- und Umlaufwasserreservoir dient. Er ist mit einem Behälterdeckel 47 versehen und schwenkbar in einem Kipperlager 48 zwecks Entleerung gehalten. Eine Saugdüse 35, über einen flexiblen Saugschlauch 36 mit einem Knierohr 37 verbunden, dient der Aufnahme von Strassen kehricht, um diesen durch den Schlauch 36 und das am Behälter 45 befestigte Knierohr 37 dem Inneren des Behälters 45 zuzuführen. Im Innern des Kehrichtbehälters 45 befindet sich ein Schmutzwasser-Siebfilter 34 mit einer Maschenweite von beispielsweise 1 mm. Ein Sauggebläse 38 saugt die von Staub und Wasser entladene Luft 39 durch das Siebgitter 46 an und bläst sie durch einen Abluftstutzen 40 in die Atmos--phäre. Das im Oberteil des Kehrichtbehälters 45 ausfallende Gemisch von feuchtem Kehricht und Wasser gelangt in den unteren Teil des Behälters 45 und wird, was die feinen Teilchen betrifft, durch das Filter 34 festgehalten und abgeschwemmt, wonach es sich im Unterteil des Behälters 45 ansammeln kann.The street sweeper has a
Ein Einfüllstutzen 26 für sog. Rekuperationswasser führt über ein Rückschlagventil 27 in die Befeuchtungswasserleitung, in welcher sich ein Wasserschieber 28 befindet, der normalerweise dem aus dem Behälter 45 zufliessenden Wasser den Weg versperrt. Dieser Schieber 28 ist über einen Schalthebel 28a mit einem doppelt wirkenden Hydraulikzylinder 8 verbunden, welcher in anschliessend erläuterter Weise den Schieber 28 gesteuert öffnet, sobald durch das Sauggebläse 38 ein Luftstrom erzeugt wird. Im Boden des Behälters 45 und zu diesem gehörend befindet sich ein Bodenventil 29 mit einer Trennstelle 30 für den Anschluss der Befeuchtungswasserleitung. Im Anschlussstutzen 50 ist ein Stift 51 befestigt. Das Bodenventil 29 mit Ventilsitz 52 und federbelastetem Schliesskörper 53 geht beim Hochkippen des Behälters 45 automatisch in Schliessstellung und verhindert ein Auslaufen der Wasserfüllung 33 aus dem Behälter 45. Beim abgesenkten Behälter 45 drückt der Stift 51 den Schliesskörper 53 vom Sitz 52 ab, in seine Oeffnungslage, wie dies in der Figur dargestellt ist.A
Am Wasserstutzen 31 tritt das Befeuchtungswasser im Betrieb der Strassenkehrmaschine im Bereich der Saugdüse 35 in den Saugkanal und befeuchtet dort insbesondere die feineren, von der Strasse aufgesaugten Staubteilchen des Kehrichts.At the
Zum hydraulischen Antriebs- und Steuersystems gehört eine Haupthydraulikpumpe l, welche mittels eines Dieselmotors 2 angetrieben ist. Eine Füllpumpe 3 ist der Hydropumpe für das Verfahren zugeordnet. Eine Hydrozahnradpumpe 4 dient dem Antrieb des Gebläses 38 mittels eines Hydromotors 6, während eine Hydrozahnradpumpe 5 für die Erzeugung der Bewegungen dient. Das Hydrauliköl wird in zwei Hydraulik- ölbehältern 7 gesammelt. Der erwähnte, doppelt wirkende Hydrozylinder 8 für das Auf- und Zuschliessen des Wasserschiebers 28The hydraulic drive and control system includes a main hydraulic pump 1, which is driven by a
wird über ein Vierwegeventil 9 gesteuert. Zu diesem Hydrauliksystem gehört ferner ein Druckschalter 10 sowie ein Kippzylinder 11 zum Kippen des Kehrichtbehälters 45 und ein Hydrozylinder 12 zur Betätigung des Behälterdeckels 47.is controlled via a four-
Zum Steuerkreis für die Verriegelung des Befeuchtungswasser-Sperrschiebers 29 gehört ein Magnet 13 sowie ein hydraulisch betätigter elektrischer Schalter 14 und ein Ein/Aus-Schalter 15 für die Wasserrekuperation. Ueber den Druckschalter 10 wird der elektrische Schalter 14 geschaltet, was ein Schalten des Ein/Aus-Schalters 15 bewirkt und damit über den Magnet 13 ein Oeffnen des Wasserschiebers 28 durch Betätigung des Hydrozylinders 8.erfolgt. Sinkt aus irgend einem Grunde der Druck am Schalter 10 unter ein einstellbares Minimum so wird entsprechend die Wasserzuführung durch Schwenken des Wasserschiebers 28 in die Schliessstellung unterbrochen.The control circuit for locking the dampening
Neben diesem im wesentlichen in sich geschlossenen Schmutzwassersystem ist ein von diesem System unabhängiges, offenes Frischwassersystem vorgesehen, mit einem Frischwasserbehälter 16, über dessen Einfüllstutzen 17 Frischwasser eingefüllt werden kann. In einer Versorgerleitung befindet sich ein Wasserfilter 18 vor einer Wasserpumpe 19, deren Keilriemenantrieb 20 schematisch dargestellt ist. Ein Maximaldruckventil 21 ermöglicht ein Ueberströmen von der Druck- in die Ansaugseite der Wasserpumpe 19. Die Wasserpumpe 19 versorgt entsprechend der Stellung von zwei Wasserregulierhahnen 23 eine Wasserdüse 24 zum Tellerbesen 25 der Maschine bzw. eine Wassereinspritzdüse 22, welche im Knierohr 37 angeordnet ist.In addition to this essentially self-contained dirty water system, an open fresh water system that is independent of this system is provided, with a
Der Frischwassertank 16 mit 200 1 Volumen erlaubt nur einen ganz beschränkten Aktionsradius der Maschine, da neben den Düsen 24 für die Tellerbesen und der Sprühdüse 22 für das Knierohr bei andern Maschinen zur Schmierung des zu fördernden Schmutzes in der Saugleitung mit zusätzlichen Düsen ganz beträchtliche Mengen Wasser aus dem Frischwassertank gebraucht werden.The
Das System der Wasserrekuperation erlaubt nun, im Kehrichtbehälter 45 vor Arbeitsbeginn zusätzlich 80 - 150 1 Wasser 33 einzufüllen. Dieses Wasser wird ausschliesslich für die Schmierung des Saugmundes 35, des Saugschlauches 36 und des Knierohres 37 herangezogen. Die Frischwasserdüse 22 wird nur bei ganz extremem Schmutzanfall gebraucht.The water recuperation system now allows an additional 80 - 150 liters of
Das mit dem Schmutz anfallende Wasser wird im Kehrichtbehälter 45 aufbereitet und immer wieder verwendet.The water accumulating with the dirt is processed in the
Der Wasserverlust ist sehr klein und wird durch Zugabe von Frischwasser am Tellerbesen 25 ersetzt.The water loss is very small and is replaced by adding fresh water to the
Der Aktionsradius ist nun so gross geworden, dass es nicht mehr nötig wird, Frischwasser vor Erreichen einer ganzen Behälterfüllung mit Schmutz nachzufüllen. Oft reicht die Frischwasserfüllung für mehrere Kehrichtbehälterfüllungen.The radius of action has now become so large that it is no longer necessary to refill fresh water with dirt before it reaches a full tank. The fresh water filling is often sufficient for several rubbish bins.
Das Einfüllen von Frischwasser in den Kehrichtbehälter 45 erfolgt über den Einfüllstutzen 26 und das Rückschlagventil 27. Das Bodenventil 29 ist geöffnet. Die Wassermenge beträgt ca. 80 - 150 l, je nach Verschmutzungsgrad. Der Wasserschieber 28 ist gesperrt, d.h. es fliesst kein Wasser zum Saugmund. Gleichzeitig wird das Sieb 34 dadurch von Schmutz gereinigt.Fresh water is poured into the
Das Kehrgut 42 mit dem Wasser der Düsen 24 wird im Saugmund 35 aufgesaugt.The
Die Saugkraft in der gesamten Saugleitung zieht nun das Wasser der Wasserfüllung 33 durch den Wasserstutzen 31 ein, wird mit dem Kehricht 43 mitgerissen und gelangt wieder in den Kehrichtbehälter 45. Das Wasser "schmiert" einwandfrei die gesamte Saugleitung und verunmöglicht ein Verstopfen derselben.The suction force in the entire suction line now draws in the water of the water filling 33 through the
Im Kehrichtbehälter 45 liegt das Wasser immer über dem Schmutz und kann bei jedem Füllungsgrad über das sich über die ganze Höhe erstreckende Sieb 34 wieder zum Saugmund abfliessen. Der Wasserkreislauf ist somit geschlossen. Die Saugkraft im Saugrohr wird durch Evakuierung des Schmutzbehälters durch das Gebläse 38 erzeugt.In the
Mit dem hydraulischen Kippzylinder 11 kann der Kehrichtbehälter über das Drehlager 48 ausgekippt werden.With the
Gleichzeitig wird mittels des Hydrozylinders 12 der Deckel 47 geöffnet.At the same time, the
Das Bodenventil 29 schliesst beim Kippvorgang sofort und verhindert ein Ausfliessen von Wasser oder Schmutzwasser.The
Bei Verschmutzung kann das Ventil gut von aussen gereinigt werden.If it is dirty, the valve can be cleaned well from the outside.
Meist reicht nun die Frischwasserfüllung für mehrere Behälterfüllungen. Die Wassermenge im Kehrichtbehälter ist nach jeder Kippung wieder einzubringen.Usually the fresh water filling is now sufficient for several tank fillings. The amount of water in the waste bin must be returned after each tipping.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2776/84 | 1984-06-06 | ||
CH277684A CH678342A5 (en) | 1984-06-06 | 1984-06-06 | Dust wetting road sweeping machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0164315A2 true EP0164315A2 (en) | 1985-12-11 |
EP0164315A3 EP0164315A3 (en) | 1987-01-21 |
Family
ID=4241345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85810257A Withdrawn EP0164315A3 (en) | 1984-06-06 | 1985-06-05 | Road-sweeping apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0164315A3 (en) |
AT (1) | AT388007B (en) |
CH (1) | CH678342A5 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4827637A (en) * | 1986-09-16 | 1989-05-09 | Anton Kahlbacher | Apparatus for clearing a surface of snow and dirt |
FR2626023A1 (en) * | 1988-01-20 | 1989-07-21 | Euronov | MULTIFUNCTIONAL DEVICE FOR CLEANING AND REMOTELY PROCESSING SURFACES, ARTICLES AND OBJECTS LOCATED IN THE BORDER OF CIRCULATION PATHWAYS |
EP0347067A1 (en) * | 1988-06-16 | 1989-12-20 | Johnston Engineering Limited | Improvements in road sweeping vehicles |
WO1991019050A1 (en) * | 1990-06-08 | 1991-12-12 | Schmidt Winterdienst- Und Kommunaltechnik Gmbh | Cleaning and other vehicles |
WO1991019053A1 (en) * | 1990-06-08 | 1991-12-12 | Schmidt Winterdienst- Und Kommunaltechnik Gmbh | Cleaning and other vehicles |
WO1991019046A1 (en) * | 1990-06-08 | 1991-12-12 | Schmidt Winterdienst- Und Kommunaltechnik Gmbh | Control means for cleaning vehicle |
WO1994016147A1 (en) * | 1993-01-05 | 1994-07-21 | Manhole Adjusting Contractors Inc. | System and method for controlling emissions created by spraying liquids from moving vehicles |
EP0624692A2 (en) * | 1993-05-10 | 1994-11-17 | MABO FAHRZEUG- UND ANLAGENBAU, ENTSORGUNGS-SYSTEME, UMWELTTECHNOLOGIE GmbH & Co., UTEF FORSCHUNG KG | Working machine for removing oil or grease from road-surfaces |
EP1947246A2 (en) | 2007-01-17 | 2008-07-23 | Schmidt Holding GmbH | Sweeping machine |
DE102018104116B3 (en) | 2018-02-23 | 2019-08-08 | Aebi Schmidt Deutschland Gmbh | sweeper |
DE102020116166A1 (en) * | 2020-06-18 | 2021-06-24 | Aebi Schmidt Deutschland Gmbh | Self-propelled sweeper |
CN114960516A (en) * | 2022-01-24 | 2022-08-30 | 淮阴师范学院 | Dirt separating tank structure of pavement sweeper |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104443962A (en) * | 2014-11-03 | 2015-03-25 | 合肥华信电动科技发展有限公司 | Water-saving electric sanitation vehicle with washing function and clearance function |
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1985
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DE824800C (en) * | 1950-02-14 | 1951-12-13 | Heinrich Schoerling | Method and device for moistening the rubbish in street sweepers with vacuum conveyance |
US3036326A (en) * | 1956-09-14 | 1962-05-29 | Good Roads Machinery Corp | Road cleaning machines |
FR76487E (en) * | 1957-04-12 | 1961-10-20 | Hoover Ltd | Improvements to devices for the treatment of parquet floors |
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Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4827637A (en) * | 1986-09-16 | 1989-05-09 | Anton Kahlbacher | Apparatus for clearing a surface of snow and dirt |
FR2626023A1 (en) * | 1988-01-20 | 1989-07-21 | Euronov | MULTIFUNCTIONAL DEVICE FOR CLEANING AND REMOTELY PROCESSING SURFACES, ARTICLES AND OBJECTS LOCATED IN THE BORDER OF CIRCULATION PATHWAYS |
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GB2244743B (en) * | 1990-06-08 | 1995-02-15 | Schmidt Mfg & Equip | Water recirculation system for a cleaning vehicle |
WO1991019050A1 (en) * | 1990-06-08 | 1991-12-12 | Schmidt Winterdienst- Und Kommunaltechnik Gmbh | Cleaning and other vehicles |
WO1991019053A1 (en) * | 1990-06-08 | 1991-12-12 | Schmidt Winterdienst- Und Kommunaltechnik Gmbh | Cleaning and other vehicles |
WO1991019046A1 (en) * | 1990-06-08 | 1991-12-12 | Schmidt Winterdienst- Und Kommunaltechnik Gmbh | Control means for cleaning vehicle |
WO1994016147A1 (en) * | 1993-01-05 | 1994-07-21 | Manhole Adjusting Contractors Inc. | System and method for controlling emissions created by spraying liquids from moving vehicles |
EP0624692A2 (en) * | 1993-05-10 | 1994-11-17 | MABO FAHRZEUG- UND ANLAGENBAU, ENTSORGUNGS-SYSTEME, UMWELTTECHNOLOGIE GmbH & Co., UTEF FORSCHUNG KG | Working machine for removing oil or grease from road-surfaces |
EP0624692A3 (en) * | 1993-05-10 | 1995-03-08 | Mabo Fahrzeug Anlagenbau | Working machine for removing oil or grease from road-surfaces. |
EP1947246A2 (en) | 2007-01-17 | 2008-07-23 | Schmidt Holding GmbH | Sweeping machine |
DE102007002566A1 (en) * | 2007-01-17 | 2008-07-31 | Schmidt Holding Gmbh | sweeper |
DE102018104116B3 (en) | 2018-02-23 | 2019-08-08 | Aebi Schmidt Deutschland Gmbh | sweeper |
DE102020116166A1 (en) * | 2020-06-18 | 2021-06-24 | Aebi Schmidt Deutschland Gmbh | Self-propelled sweeper |
WO2021254779A1 (en) | 2020-06-18 | 2021-12-23 | Aebi Schmidt Deutschland Gmbh | Self-propelled sweeping machine |
CN114960516A (en) * | 2022-01-24 | 2022-08-30 | 淮阴师范学院 | Dirt separating tank structure of pavement sweeper |
Also Published As
Publication number | Publication date |
---|---|
CH678342A5 (en) | 1991-08-30 |
AT388007B (en) | 1989-04-25 |
EP0164315A3 (en) | 1987-01-21 |
ATA263784A (en) | 1988-09-15 |
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