EP2775034A1 - Collecting road sweeper - Google Patents

Collecting road sweeper Download PDF

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Publication number
EP2775034A1
EP2775034A1 EP14000674.3A EP14000674A EP2775034A1 EP 2775034 A1 EP2775034 A1 EP 2775034A1 EP 14000674 A EP14000674 A EP 14000674A EP 2775034 A1 EP2775034 A1 EP 2775034A1
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EP
European Patent Office
Prior art keywords
suction
flow guide
suction shaft
flow
cleaned
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Granted
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EP14000674.3A
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German (de)
French (fr)
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EP2775034B1 (en
Inventor
Mathias Klaus Morath
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Aebi Schmidt Deutschland GmbH
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Aebi Schmidt Deutschland GmbH
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Publication of EP2775034A1 publication Critical patent/EP2775034A1/en
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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

Definitions

  • the present invention relates to a picking sweeper with a dirt collecting container to which on the one hand a suction fan and on the other hand connected via a suction line a suction head with a suction shaft and a working surface in front of this extending flexible planar flow guide.
  • Picking sweepers are in various designs and configurations of the prior art. Namely, self-propelled picking sweepers and pickup sweeping machines pulled by a towing vehicle are known for cleaning traffic areas such as, in particular, roads and sidewalks, squares, runways and the associated apron and the like.
  • suction heads with (front) Grobgutklappen are known, which can be mechanically opened and closed again.
  • Such coarse material flaps can in particular be rigid, pivotable and / or liftable components (cf., eg, FIG DE 3437990 A1 ) as well as deformable components (see. ES 2369983 A1 ).
  • they do not constitute a planar flow guide element extending in the working direction in front of the suction shaft, in the sense that a fluidically optimized nozzle effect is achieved between it and the surface to be cleaned.
  • a double suction is known in which the first, in the working direction front suction mouth is connected via a suction line with a nozzle which is directed in the working direction immediately before the second suction mouth against the surface to be cleaned.
  • the nozzle is sealed from the second suction mouth by means of a rolling diaphragm which functions as a coarse slide and increases the gap width for the suction flow when the nozzle is raised.
  • the present invention seeks to provide a picking sweeper of the type described, which is characterized with a comparatively low power consumption of the suction fan with high reliability by a typical application conditions very good cleaning result.
  • "typical" operating conditions include those in which significant amounts of relatively bulky debris are to be included, such as more or less accumulated leaves in autumn.
  • a suction head in which a in the working direction in front of the suction shaft extending flexible planar Strömungsleitelement which nozzle-shaped limited the inflow region to the suction shaft in cooperation with the surface to be cleaned, with a constant
  • operation of the flow-guiding element as a boundary of a nozzle-like flow path does not change as a result of such an adjustment of the geometry, thus the said nozzle-like flow path can be optimally adapted to the prevailing conditions, ideally infinitely.
  • a first preferred embodiment of the sweeping machine according to the invention is characterized in that the edge facing away from the suction shaft of the flow guide by means of the adjusting at least substantially linearly displaceable.
  • This allows, for example, the realization of the adjustment by a hydraulic cylinder (or more hydraulic cylinders), without additional facial expressions such as a reversing gear or the like.
  • a development which is particularly preferred in this respect is characterized in that the edge of the flow-guiding element facing away from the suction duct is displaceable essentially parallel to the surface to be cleaned or only comparatively small to the latter.
  • a comparatively short embodiment of the suction head in the working direction can in particular be realized in the development of the invention explained above if the planar flow guide element is guided away from the suction shaft via a deflecting roller. Because in this case does not need to be held at the front of the suction head space for the stretched geometry of the flow guide, which does not need it in the strongly curved geometry of the flow. However, such a deflection of the flow-guiding element is typically accompanied by an increased overall height of the suction head, which may prove less favorable in individual cases. And the planar flow guide is - by comparatively low inherent rigidity - adapt to the deflection.
  • a further preferred possibility of constructive implementation of the present invention consists in that the flow guide element can be wound away from the suction shaft onto a winding roller.
  • the advantage of the comparatively small dimensions of the suction head in the working direction also applies to this development.
  • the position of the edge of the flow-guiding element adjacent to the suction duct is preferably relative fixed to the suction shaft.
  • the position is particularly preferably chosen such that the flow guide element directly adjoins the suction shaft.
  • the edge region of the flow guide element immediately adjacent to the suction chute is fixed and geometrically fixed in such a way that a continuous transition from the flow guide element to the suction chute is ensured, regardless of the set gap width.
  • the avoidance of discontinuities in the transition from the flow guide to the suction shaft contributes not only - due to the optimized flow conditions - to particularly good cleaning results at a particularly low power consumption of the suction fan. Rather, this is also favorable with regard to the noise emissions and with regard to the maintenance effort, because flow dead spaces, which are typically prone to the successive build-up of a contamination layer, are avoided.
  • the flow guide can be designed in particular as an elastically deformable flow baffle.
  • the planar flow guide can be preformed in its maximum stretched, in its maximum arched or any intermediate position, ie at the geometry is free of internal tension.
  • the flow guide element consists of a plurality of hingedly interconnected slats. In this case, typically no stresses build up in the case of a change in the geometry of the flow guide element in it.
  • Such a design of the flow guide proves to be advantageous in particular when it is deflected over a guide roller or wound onto a winding roller (see above).
  • the respective geometry of the flow-guiding element can thereby be free, ie set according to a chain line, if the flow-guiding element "sags" at least in regions freely downwards in the direction of the surface to be cleaned.
  • the latter is by no means compulsory.
  • a kind of tension roller - or a plurality of tension rollers comprehensive tension roller unit - may be provided which defines the apex of the flow, wherein such a tension roller may be biased in particular spring loaded.
  • An advantageous aspect of the embodiment of the suction head with (at least) one tensioning roller is the possibility of being able to further influence the geometry of the flow guidance element. Especially with regard to an optimal nozzle effect.
  • suction head 1 comprises, based on the prior art, a housing 2 in which a - obliquely backwards, against the working direction A inclined - suction shaft 3 is formed, to which a Suction head 1 with the dirt collector of the sweeper connecting suction hose can be connected.
  • the suction shaft 3 defines a transition from an at least substantially cylindrical cross section in the connection region 4 for the suction hose to a cross section with a substantially straight front boundary extending transversely to the working direction A.
  • part of the housing 2 are two lateral cheek plates 10, on which possibly (not shown) support runners or other support means (eg support wheels) may be attached.
  • a support structure 5 for a (further) support device 6 (such as, for example, the indicated support runner 7) is arranged on the housing 2.
  • two pairs of tabs 11 are provided, to which a (not shown) lifting device can be connected, by means of which the suction head 1 can be raised to a transport position.
  • the support unit comprising the individual support means defines when lowered onto the surface 8 to be cleaned suction head 1, in particular when the lifting device is switched to a "floating position", the position of the housing 2 above the surface 8.
  • a (replaceable) substantially V-shaped wear plate 9 is attached to the underside of the housing 2. On its upper side are on the housing 2 continue two stop buffer 12th attached, which are used in the raised transport position.
  • a flexible planar flow guide 13 extends, which is designed as an elastically deformable flow guide plate 14 consisting of an elastomer material.
  • the flow guide plate 14 is fixed to the casing 2 at its edge adjacent to the suction chute 3 relative to the suction chute 3, not only with respect to the position of the edge, but also with respect to the orientation, i.
  • the edge portion 15 of the flow guide plate 14 adjacent to the suction chute 3 is fixed to a flat housing portion 18 offset from the front boundary 16 of the suction chute 3 by a jump 17 whose inclination substantially corresponds to the inclination of the suction chute 3 , so that the inner, the surface to be cleaned 8 facing surface 19 of the flow guide 14 as steady as possible, ie without appreciable misalignment, gap or crease passes into the suction shaft.
  • the front in the direction of A front edge of the flow baffle 14 is made of his in Fig. 1 illustrated retracted position along the substantially horizontal, ie in the direction of A only slightly inclined direction B movable forward.
  • the front edge region 20 of Flow guide plate 14 is fixed by means of the clamping screws 21 and the terminal block 22 to a fastening strip 23, which in turn is welded to four pipe sections 24, 25.
  • the four pipe sections 24, 25 are rotatably received on a shaft 26 which is supported by two guide rods 27, which in turn are guided in each case in two guide blocks 28 slidably.
  • the guide blocks 28 are in turn attached to stiffening ribs 29 of the housing 2.
  • the linear guides 30 formed thereby are to protect them from contamination of a panel 31 - this is shown only in the right linear guide - surrounded.
  • Centered on the shaft 26 engages an executed as a hydraulic cylinder 32 adjusting 33.
  • a head piece 35 is attached to the end of the piston rod 34 of the hydraulic cylinder 32, which in turn is connected to the shaft 26.
  • the hydraulic cylinder 32 is fixed to the housing 2 of the suction head 1.
  • Relevant that regardless of the respective set shape or geometry of the flow guide plate 14 whose rear edge region 15 passes into the suction shaft 3 due to its above-explained clamping without significant offset, gap or crease. This is important for a good cleaning result with low power consumption of the suction fan and low noise emissions.
  • the front edge region 20 of the flow guide plate 14 can, however, freely change its inclination, depending on the position of the shaft 26, ie, adapt the geometry of the flow guide plate 14.
  • FIG. 4 there is a preferred modification of the in the FIGS. 1 to 3 illustrated embodiment of a suction head of a sweeping machine according to the invention in that the planar flow guide 13 is front, that is guided away from the suction shaft 3 via a guide roller 38.
  • the fluidically effective extension of the flow guide 13 extends from the guide roller 38 to the suction section adjacent edge portion 15.
  • the adjustment may in turn comprise, for example, a hydraulic cylinder which engages the guided around the guide roller 38 end of the planar flow guide 13.
  • This construction offers itself in the execution of the flow guide 13 with a comparatively low rigidity, for example, when flow guide consists of a plurality of hingedly interconnected slats. implied is in Fig.
  • FIG. 5 schematically shown further modification in which the flow guide 13 is remote from the suction shaft 3 on a winding roller 39 wound.
  • the adjustment causes in this modification, a rotation of the winding roller 39.
  • the geometry of the Strömungsleitelements 13 is accordingly between a relatively curved shape with a relatively small minimum distance to be cleaned surface 8 and a relatively elongated shape with a relatively large minimum distance to the surface to be cleaned variable.
  • the flow-effective extension of the planar flow-guiding element 13 extends here from the winding roller 39 to the edge section 15 adjacent to the suction shaft.

Abstract

The receiving sweeper has a dirt collecting container. A flow guiding element (13) engages an adjusting device (33) in a constant position of a suction duct (3) by using a suction nozzle facing away from an edge area (20). The flow guiding element engages the adjusting device in such a way that its geometry changes between a relatively curved shape having a relatively small minimum distance to a surface to-be cleaned (8) and a relatively elongated shape with a relatively large minimum distance to the surface to-be cleaned.

Description

Die vorliegende Erfindung betrifft eine aufnehmende Kehrmaschine mit einem Schmutzsammelbehälter, an welchem einerseits ein Sauggebläse und andererseits über eine Saugleitung ein Saugkopf mit einem Saugschacht und einem sich in Arbeitsrichtung vor diesem erstreckenden flexiblen flächigen Strömungsleitelement angeschlossen sind.The present invention relates to a picking sweeper with a dirt collecting container to which on the one hand a suction fan and on the other hand connected via a suction line a suction head with a suction shaft and a working surface in front of this extending flexible planar flow guide.

Aufnehmende Kehrmaschinen zählen in diversen Ausführungen und Ausgestaltungen zum Stand der Technik. Namentlich sind bekannt selbstfahrende aufnehmende Kehrmaschinen sowie von einem Zugfahrzeug gezogene aufnehmende Kehrmaschinen zum Reinigen von Verkehrsflächen wie insbesondere Straßen und Gehwegen, Plätzen, Start- und Landebahnen sowie dem zugehörigen Vorfeld und dergleichen.Picking sweepers are in various designs and configurations of the prior art. Namely, self-propelled picking sweepers and pickup sweeping machines pulled by a towing vehicle are known for cleaning traffic areas such as, in particular, roads and sidewalks, squares, runways and the associated apron and the like.

Zwei besonders wichtige praxisrelevante Aspekte bei derartigen aufnehmenden Kehrmaschinen sind einerseits die Qualität des Reinigungsergebnisses und andererseits die hierfür aufzuwendende Energie. Typischerweise geht ein gutes Reinigungsergebnis mit einem hohen Energieverbrauch für den Betrieb des Sauggebläses einher. Um den Energieverbrauch zu begrenzen dienen strömungstechnisch optimierte Saugköpfe, bei denen durch ein flächiges Strömungsleitelement - zwischen diesem und der zu reinigenden Oberfläche - ein düsenförmiger Luftströmungsweg definiert wird, welcher typischerweise in Strömungsrichtung betrachtet einen ersten Bereich mit sich reduzierender und einen zweiten Bereich mit sich vergrößernder Spalthöhe zur zu reinigenden Oberfläche umfasst, wobei typischerweise die Erstreckung der beiden Bereiche in Arbeitsrichtung des Saugkopfes etwa in ähnlicher Größenordnung liegt. Ein weiterer praxisrelevanter Aspekt betrifft die Ausführung des Saugkopfes im Hinblick auf die Möglichkeit, Kehrgut unterschiedlichster Art und Gestalt (groß, klein, leicht, schwer) von der zu reinigenden Oberfläche aufzunehmen. Auch hier besteht ein Zielkonflikt insoweit, als die Möglichkeit, Grobgut aufzunehmen, in der Regel mit einer entsprechend großen frontseitigen Spaltweite am Saugkopf einhergeht, was wiederum, um gute Reinigungsergebnisse zu erzielen, einen Betrieb des Sauggebläses mit hoher Leistung voraussetzt. Dies ist nicht nur unter energetischen Gesichtspunkten unerwünscht; vielmehr ist bei solchen Kehrmaschinen auch die vergleichsweise hohe Lärmemission (sowohl zuströmseitig als auch abströmseitig) nachteilig.Two particularly important practical aspects of such picking sweepers are, on the one hand, the quality of the cleaning result and, on the other hand, the energy required for this purpose. Typically, a good cleaning result is accompanied by a high energy consumption for the operation of the suction fan. In order to limit the energy consumption serve suction cups optimized in terms of flow, in which a nozzle-shaped air flow path is defined by a planar flow guide element - between this and the surface to be cleaned typically viewed in the flow direction comprises a first region with a reducing and a second region with increasing gap height to the surface to be cleaned, typically the extent of the two regions in the working direction of the suction head is approximately of a similar magnitude. Another practical aspect concerns the design of the suction head with regard to the possibility of picking up debris of various types and shapes (large, small, light, heavy) from the surface to be cleaned. Again, there is a conflict of objectives insofar as the possibility to take coarse, usually accompanied by a correspondingly large front gap on the suction head, which in turn, in order to achieve good cleaning results, requires operation of the suction fan with high performance. This is not only undesirable from an energetic point of view; rather, the comparatively high noise emission (both upstream and downstream) is disadvantageous in such sweepers.

Vor diesem Hintergrund existieren verschiedene Ansätze, das sich in Arbeitsrichtung vor dem Saugschacht erstreckende flächige Strömungsleitelement, an welchem die angesaugte Luft entlang strömt, flexibel auszuführen dergestalt, dass im "normalen" Kehrbetrieb zwischen dem Strömungsleitelement und der zu reinigenden Oberfläche ein vergleichsweise geringer Spalt besteht, so dass dort auch bei vergleichsweise geringen Leistungsaufnahmen des Sauggebläses ausreichend hohe Strömungsgeschwindigkeiten vorliegen, wobei sich das Strömungsleitelement verformt, wenn es auf Grobgut (z.B. eine Dose) auftrifft. Saugköpfe dieser Art sind beispielsweise bekannt aus der GB 1046341 , der GB 1530904 sowie der AU 462011 .Against this background, there are various approaches that flexibly execute in the working direction in front of the suction shaft extending planar Strömungsleitelement, along which the sucked air flows such that in the "normal" sweeping between the flow guide and the surface to be cleaned, a comparatively small gap, so that there even at comparatively low Power consumption of the suction fan sufficiently high flow velocities are present, with the flow guide deformed when it hits coarse material (eg a can). Suction heads of this type are known, for example from the GB 1046341 , of the GB 1530904 as well as the AU 462011 ,

Um zwischen zwei Betriebsweisen, nämlich der Aufnahme von Normalgut einerseits und der Aufnahme von Grobgut andererseits umschalten zu können, sind darüber hinaus auch Saugköpfe mit (frontseitigen) Grobgutklappen bekannt, welche mechanisch geöffnet und wieder verschlossen werden können. Solche Grobgutklappen können dabei insbesondere als in sich starre, verschwenkbare und/oder anhebbare Bauteile (vgl. z.B. DE 3437990 A1 ) wie auch als verformbare Bauteile (vgl. ES 2369983 A1 ) ausgeführt sein. Sie stellen indessen kein sich in Arbeitsrichtung vor dem Saugschacht erstreckendes flächiges Strömungsleitelement in dem Sinne dar, dass zwischen ihm und der zu reinigenden Oberfläche eine strömungstechnisch optimierte Düsenwirkung erzielt wird.In order to switch between two modes of operation, namely the inclusion of normal goods on the one hand and the inclusion of coarse material on the other hand, also suction heads with (front) Grobgutklappen are known, which can be mechanically opened and closed again. Such coarse material flaps can in particular be rigid, pivotable and / or liftable components (cf., eg, FIG DE 3437990 A1 ) as well as deformable components (see. ES 2369983 A1 ). However, they do not constitute a planar flow guide element extending in the working direction in front of the suction shaft, in the sense that a fluidically optimized nozzle effect is achieved between it and the surface to be cleaned.

Statt die Grobgutklappe in Arbeitsrichtung nach vorne schwenkbar auszuführen kann jene Klappe auch entgegen der Arbeitsrichtung nach hinten verschwenkbar sein, wobei der Abstand zwischen der Grobgutklappe und dem Saugschacht mittels einer elastischen Schürze überbrückt ist, welche eingefaltet wird, wenn die Grobgutklappe zur Aufnahme von Grobgut nach hinten verschwenkt wird (vgl. DE 3316953 ).Instead of executing the coarse material flap in the direction of forward pivoting that flap can also against the working direction be pivoted backwards, wherein the distance between the coarse material flap and the suction shaft is bridged by means of an elastic apron, which is folded when the Grobgutklappe for receiving coarse material is pivoted backwards (see. DE 3316953 ).

Schließlich ist aus der DE 19524203 A1 ein Doppelsaugkopf bekannt, bei welchem der erste, in Arbeitsrichtung vordere Saugmund über eine Saugleitung mit einer Düse verbunden ist, welche in Arbeitsrichtung unmittelbar vor dem zweiten Saugmund gegen die zu reinigende Oberfläche gerichtet ist. Die Düse ist gegenüber dem zweiten Saugmund mittels einer Rollmembran abgedichtet, welche die Funktion eines Grobgutschiebers aufweist und die Spaltweite für die Ansaugströmung vergrößert, wenn die Düse angehoben wird.Finally, out of the DE 19524203 A1 a double suction is known in which the first, in the working direction front suction mouth is connected via a suction line with a nozzle which is directed in the working direction immediately before the second suction mouth against the surface to be cleaned. The nozzle is sealed from the second suction mouth by means of a rolling diaphragm which functions as a coarse slide and increases the gap width for the suction flow when the nozzle is raised.

Vor dem Hintergrund des vorstehend dargelegten Standes der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine aufnehmende Kehrmaschine der eingangs angegebenen Art bereitzustellen, die sich bei einer vergleichsweise geringen Leistungsaufnahme des Sauggebläses bei hoher Betriebssicherheit durch ein bei typischen Anwendungsbedingungen sehr gutes Reinigungsergebnis auszeichnet. In diesem Sinne sind unter "typischen" Betriebsbedingungen auch solche zu verstehen, bei denen erhebliche Mengen von vergleichsweise voluminösem Kehrgut aufzunehmen sind, wie beispielsweise mehr oder weniger angehäuftes Laub im Herbst.Against the background of the above-described prior art, the present invention seeks to provide a picking sweeper of the type described, which is characterized with a comparatively low power consumption of the suction fan with high reliability by a typical application conditions very good cleaning result. In this sense, "typical" operating conditions include those in which significant amounts of relatively bulky debris are to be included, such as more or less accumulated leaves in autumn.

Gelöst wird diese Aufgabenstellung gemäß der vorliegenden Erfindung durch die in Anspruch 1 angegebene aufnehmende Kehrmaschine. Demgemäß zeichnet sich die erfindungsgemäße Kehrmaschine insbesondere durch einen solchen Saugkopf aus, bei welchem ein sich in Arbeitsrichtung vor dem Saugschacht erstreckendes flexibles flächiges Strömungsleitelement, welches den Zuströmbereich zu dem Saugschacht im Zusammenwirken mit der zu reinigenden Oberfläche düsenförmig begrenzt, bei gleichbleibender Position des Saugschachts mittels einer Verstelleinrichtung, welche an dem dem Saugschacht abgewandten Randbereich des flexiblen flächigen Strömungsleitelements angreift, formveränderbar ist, und zwar dergestalt, dass die Geometrie des Strömungsleitelements zwischen einer relativ gewölbten Form mit einem relativ geringen Mindestabstand (= Spaltweite) zur zu reinigenden Oberfläche und einer relativ gestreckten Form mit einem relativ großen Mindestabstand zur zu reinigenden Oberfläche veränderbar ist. Entscheidend ist dabei, dass das flexible flächige Strömungsleitelement bei verschiedenen - mittels der Verstelleinrichtung veränderbaren - Spaltweiten eine den Zuströmbereich nach oben hin düsenartig begrenzende Funktion und Wirkung hat. Das heißt, bei einer Veränderung der Geometrie des Strömungsleitelements verändert sich zwar gemeinsam mit dem Mindestabstand (= Spaltweite) des Strömungsleitelements zu der zu reinigenden Oberfläche das Maß der Krümmung des Strömungsleitelements in dessen Scheitelpunkt; an der grundsätzlichen Funktionsweise des Strömungsleitelements als Begrenzung eines düsenartig ausgeführten Strömungswegs ändert sich durch eine solche Verstellung der Geometrie indessen nichts, somit kann der besagte düsenartige Strömungsweg optimal an die jeweils bestehenden Verhältnisse angepasst werden, und zwar idealer Weise stufenlos.This object is achieved according to the present invention by the recited in claim 1 sweeper. Accordingly, the sweeping machine according to the invention is characterized in particular by such a suction head, in which a in the working direction in front of the suction shaft extending flexible planar Strömungsleitelement which nozzle-shaped limited the inflow region to the suction shaft in cooperation with the surface to be cleaned, with a constant position of the suction shaft by means of a Adjustment device, which acts on the side facing away from the suction shaft edge region of the flexible planar Strömungsleitelements is modifiable, in such a way that the geometry of the Strömungsleitelements between a relatively curved shape with a relatively small minimum distance (= gap width) to be cleaned surface and a relatively elongated shape is variable with a relatively large minimum distance to the surface to be cleaned. It is crucial that the flexible planar flow guide at different - adjustable by means of the adjustment - gap widths has a flow area upwardly towards the nozzle-like limiting function and effect. That is, with a change in the geometry of the Strömungsleitelements changed together with the minimum distance (= gap width) of the flow to the surface to be cleaned, the degree of curvature of the flow in its vertex; at the fundamental However, operation of the flow-guiding element as a boundary of a nozzle-like flow path does not change as a result of such an adjustment of the geometry, thus the said nozzle-like flow path can be optimally adapted to the prevailing conditions, ideally infinitely.

Hinsichtlich der konstruktiven Umsetzung der vorliegenden Erfindung mit vergleichsweise geringem Aufwand zeichnet sich eine erste bevorzugte Weiterbildung der erfindungsgemäßen Kehrmaschine dadurch aus, dass der dem Saugschacht abgewandter Rand des Strömungsleitelements mittels der Verstelleinrichtung zumindest im Wesentlichen linear verschiebbar ist. Dies ermöglicht beispielsweise die Realisierung der Verstelleinrichtung durch einen Hydraulikzylinder (oder mehrere Hydraulikzylinder), und zwar ohne eine zusätzliche Mimik wie beispielsweise ein Umlenkgetriebe oder dergleichen. Eine in dieser Hinsicht besonders bevorzugte Weiterbildung zeichnet sich dadurch aus, dass der dem Saugschacht abgewandte Rand des Strömungsleitelements im Wesentlichen parallel zur zu reinigenden Oberfläche oder nur vergleichsweise gering zu dieser geneigt verschiebbar ist. Dies gestattet die Ausführung des Saugkopfes - trotz einer Verstellbarkeit der Spaltweite innerhalb einer großen Bandbreite - mit einer vergleichsweise geringen Höhe des Saugkopfes, was günstig ist für die Möglichkeit, den Saugkopf in eine Transportstellung so weit von der zu reinigenden Oberfläche abzuheben, dass keine Gefahr der Beschädigung des Saugkopfes in der angehobenen Transportstellung durch Hindernisse besteht.With regard to the constructive implementation of the present invention with comparatively little effort, a first preferred embodiment of the sweeping machine according to the invention is characterized in that the edge facing away from the suction shaft of the flow guide by means of the adjusting at least substantially linearly displaceable. This allows, for example, the realization of the adjustment by a hydraulic cylinder (or more hydraulic cylinders), without additional facial expressions such as a reversing gear or the like. A development which is particularly preferred in this respect is characterized in that the edge of the flow-guiding element facing away from the suction duct is displaceable essentially parallel to the surface to be cleaned or only comparatively small to the latter. This allows the execution of the suction head - despite an adjustability of the gap width within a wide range - with a comparatively low height of the suction head, which is favorable for the possibility to lift the suction head in a transport position so far from the surface to be cleaned, that no danger Damage to the suction head in the raised transport position by obstacles.

Eine in Arbeitsrichtung vergleichsweise kurze Ausführung des Saugkopfes lässt sich bei der vorstehend erläuterten Weiterbildung der Erfindung insbesondere dann realisieren, wenn das flächige Strömungsleitelement entfernt von dem Saugschacht über eine Umlenkwalze geführt ist. Denn in diesem Fall braucht nicht für die gestreckte Geometrie des Strömungsleitelements frontseitig an dem Saugkopf Raum vorgehalten zu werden, dessen es bei der stark gewölbten Geometrie des Strömungsleitelements nicht bedarf. Allerdings geht eine solche Umlenkung des Strömungsleitelements typischerweise mit einer vergrößerten Bauhöhe des Saugkopfes einher, was sich im Einzelfall als weniger günstig erweisen kann. Und das flächige Strömungsleitelement ist - durch vergleichsweise geringe Eigensteifigkeit - an die Umlenkung anzupassen.A comparatively short embodiment of the suction head in the working direction can in particular be realized in the development of the invention explained above if the planar flow guide element is guided away from the suction shaft via a deflecting roller. Because in this case does not need to be held at the front of the suction head space for the stretched geometry of the flow guide, which does not need it in the strongly curved geometry of the flow. However, such a deflection of the flow-guiding element is typically accompanied by an increased overall height of the suction head, which may prove less favorable in individual cases. And the planar flow guide is - by comparatively low inherent rigidity - adapt to the deflection.

Eine weitere bevorzugte Möglichkeit der konstruktiven Umsetzung der vorliegenden Erfindung besteht darin, dass das Strömungsleitelement entfernt von dem Saugschacht auf eine Wickelwalze wickelbar ist. Der Vorteil der vergleichsweise geringen Abmessungen des Saugkopfes in Arbeitsrichtung gilt auch für diese Weiterbildung.A further preferred possibility of constructive implementation of the present invention consists in that the flow guide element can be wound away from the suction shaft onto a winding roller. The advantage of the comparatively small dimensions of the suction head in the working direction also applies to this development.

Bevorzugt ist die Position des dem Saugschacht benachbarten Randes des Strömungsleitelements relativ zum Saugschacht fixiert. Die Position wird im Hinblick auf eine strömungstechnische und energetische Optimierung dabei besonders bevorzugt so gewählt, dass das Strömungsleitelement unmittelbar an den Saugschacht anschließt. Idealerweise ist dabei der dem Saugschacht unmittelbar benachbarte Randbereich des Strömungsleitelements fixiert und geometrisch solchermaßen festgelegt, dass ein stetiger Übergang vom Strömungsleitelement zum Saugschacht gewährleistet ist, und zwar unabhängig von der eingestellten Spaltweite. Die Vermeidung von Unstetigkeiten beim Übergang vom Strömungsleitelement zum Saugschacht trägt nicht nur - aufgrund der optimierten Strömungsverhältnisse - zu besonders guten Reinigungsergebnissen bei einer besonders geringen Leistungsaufnahme des Sauggebläses bei. Vielmehr ist dies auch im Hinblick auf die Geräuschemissionen günstig sowie im Hinblick auf den Wartungsaufwand, weil strömungstechnische Toträume, welche typischerweise zum sukzessiven Aufbau einer Verschmutzungsschicht neigen, vermieden werden.The position of the edge of the flow-guiding element adjacent to the suction duct is preferably relative fixed to the suction shaft. With regard to a fluidic and energetic optimization, the position is particularly preferably chosen such that the flow guide element directly adjoins the suction shaft. Ideally, the edge region of the flow guide element immediately adjacent to the suction chute is fixed and geometrically fixed in such a way that a continuous transition from the flow guide element to the suction chute is ensured, regardless of the set gap width. The avoidance of discontinuities in the transition from the flow guide to the suction shaft contributes not only - due to the optimized flow conditions - to particularly good cleaning results at a particularly low power consumption of the suction fan. Rather, this is also favorable with regard to the noise emissions and with regard to the maintenance effort, because flow dead spaces, which are typically prone to the successive build-up of a contamination layer, are avoided.

Für die Ausführung des Strömungsleitelements kommen im Rahmen der vorliegenden Erfindung verschiedene Möglichkeiten in Betracht. So kann das Strömungsleitelement insbesondere als eine elastisch verformbare Strömungsleitplatte ausgeführt sein. Je nach den spezifischen Besonderheiten kann das flächige Strömungsleitelement dabei in seine maximal gestreckte, in seine maximale gewölbte oder aber jede beliebige Zwischenstellung vorgeformt sein, d.h. bei der betreffenden Geometrie frei sein von inneren Spannungen. Gemäß einer anderen bevorzugten Weiterbildung der vorliegenden Erfindung besteht das Strömungsleitelement aus einer Mehrzahl gelenkig miteinander verbundener Lamellen. In diesem Falle bauen sich typischerweise bei einer Änderung der Geometrie des Strömungsleitelements in diesem keine Spannungen auf. Eine solche Ausführungen des Strömungsleitelements erweist sich als vorteilhaft insbesondere dann, wenn es über eine Umlenkwalze umgelenkt oder auf eine Wickelwalze aufgewickelt wird (siehe oben). Die jeweilige Geometrie des Strömungsleitelements kann sich dabei frei, d.h. gemäß einer Kettenlinie einstellen, wenn das Strömungsleitelement zumindest bereichsweise frei nach unten in Richtung auf die zu reinigende Oberfläche "durchhängt". Letzteres ist indessen keineswegs zwingend. So kann beispielsweise auch eine Art Spannwalze - oder eine mehrere Spannwalzen umfassendes Spannwalzeneinheit - vorgesehen sein, welche den Scheitelpunkt des Strömungsleitelements vorgibt, wobei eine derartige Spannwalze insbesondere federbelastet vorgespannt sein kann. Ein vorteilhafter Aspekt der Ausführung des Saugkopfes mit (mindestens) einer Spannwalze ist die Möglichkeit, die Geometrie des Strömungsleitelements weiter beeinflussen zu können. Insbesondere im Hinblick auf eine optimale Düsenwirkung.For the execution of the flow guide come in the context of the present invention, various options into consideration. Thus, the flow guide can be designed in particular as an elastically deformable flow baffle. Depending on the specific features, the planar flow guide can be preformed in its maximum stretched, in its maximum arched or any intermediate position, ie at the geometry is free of internal tension. According to another preferred embodiment of the present invention, the flow guide element consists of a plurality of hingedly interconnected slats. In this case, typically no stresses build up in the case of a change in the geometry of the flow guide element in it. Such a design of the flow guide proves to be advantageous in particular when it is deflected over a guide roller or wound onto a winding roller (see above). The respective geometry of the flow-guiding element can thereby be free, ie set according to a chain line, if the flow-guiding element "sags" at least in regions freely downwards in the direction of the surface to be cleaned. The latter, however, is by no means compulsory. Thus, for example, a kind of tension roller - or a plurality of tension rollers comprehensive tension roller unit - may be provided which defines the apex of the flow, wherein such a tension roller may be biased in particular spring loaded. An advantageous aspect of the embodiment of the suction head with (at least) one tensioning roller is the possibility of being able to further influence the geometry of the flow guidance element. Especially with regard to an optimal nozzle effect.

Im Folgenden wird die vorliegende Erfindung anhand dreier in der Zeichnung veranschaulichter bevorzugter Ausführungsbeispiele näher erläutert, wobei, nachdem aufnehmende Kehrmaschinen der hier in Rede stehenden grundsätzlichen Art hinlänglich (z.B. aus der GB 2219819 A ) bekannt sind, sich die nachfolgende Erläuterung bevorzugter Ausführungsformen der Erfindung auf den für diese charakteristischen Saugkopf beschränkt.Hereinafter, the present invention will be more apparent from three illustrated in the drawings Embodiments explained in more detail, wherein, after picking sweepers of the basic type in question here sufficiently (eg from the GB 2219819 A ), the following explanation of preferred embodiments of the invention is limited to the characteristic for this suction head.

Es zeigt

Fig. 1
einen Vertikalschnitt durch eine erste bevorzugte Ausführungsform eines Saugkopfes einer erfindungsgemäßen Kehrmaschine,
Fig. 2
den Saugkopf nach Fig. 1 schräg von hintenlinks-oben und
Fig. 3
isoliert das bei dem Saugkopf nach den Fig. 1 und 2 verbaute verstellbare flächige Strömungsleitelement.
Fig. 4
veranschaulicht schematisch eine erste und
Fig. 5
eine zweite Modifikation der bei der Saugkopf nach den Fig. 1 bis 3 realisierten Verstellung des flächigen Strömungsleitelements.
It shows
Fig. 1
a vertical section through a first preferred embodiment of a suction head of a sweeping machine according to the invention,
Fig. 2
the suction head after Fig. 1 diagonally from the left and above
Fig. 3
isolated at the suction head after the Fig. 1 and 2 built adjustable flat flow guide.
Fig. 4
schematically illustrates a first and
Fig. 5
a second modification of the suction head after the Fig. 1 to 3 realized adjustment of the planar flow guide.

Der in den Fig. 1 bis 3 gezeigte, für einen Reinigungsbetrieb gemäß der Arbeitsrichtung A bestimmte Saugkopf 1 umfasst, in Anlehnung an den Stand der Technik, ein Gehäuse 2, in welchem ein - schräg nach hinten, entgegen der Arbeitsrichtung A geneigter - Saugschacht 3 ausgeformt ist, an welchen ein den Saugkopf 1 mit dem Schmutzsammelbehälter der Kehrmaschine verbindender Saugschlauch anschließbar ist. Der Saugschacht 3 definiert einen Übergang von einem zumindest im Wesentlichen zylindrischen Querschnitt im Anschlussbereich 4 für den Saugschlauch zu einem Querschnitt mit einer im Wesentlichen geraden, sich quer zur Arbeitsrichtung A erstreckenden frontseitigen Begrenzung.The in the Fig. 1 to 3 shown, intended for a cleaning operation according to the working direction A suction head 1 comprises, based on the prior art, a housing 2 in which a - obliquely backwards, against the working direction A inclined - suction shaft 3 is formed, to which a Suction head 1 with the dirt collector of the sweeper connecting suction hose can be connected. The suction shaft 3 defines a transition from an at least substantially cylindrical cross section in the connection region 4 for the suction hose to a cross section with a substantially straight front boundary extending transversely to the working direction A.

Weiter sind Teil des Gehäuses 2 zwei seitliche Wangenbleche 10, an denen ggf. (nicht dargestellte) Stützkufen oder sonstige Stützeinrichtungen (z.B. Stützräder) angebracht sein können. Rückwärtig ist an dem Gehäuse 2 eine Tragstruktur 5 für eine (weitere) Stützeinrichtung 6 (wie beispielsweise die angedeutete Stützkufe 7) angeordnet. An der Oberseite des Gehäuses 2 sind zwei Laschenpaare 11 vorgesehen, an welche eine (nicht dargestellte) Hubeinrichtung anschließbar ist, mittels welcher der Saugkopf 1 in eine Transportstellung anhebbar ist. Die die einzelnen Stützeinrichtungen umfassende Stützeinheit definiert bei auf die zu reinigende Oberfläche 8 abgesenktem Saugkopf 1, insbesondere wenn die Hubeinrichtung in eine "Schwimmstellung" geschaltet ist, die Position des Gehäuses 2 oberhalb der Oberfläche 8. Zum Schutz des Saugkopfes 1 insbesondere bei einer unebenen Oberfläche 8 ist an der Unterseite des Gehäuses 2 eine (auswechselbare) im Wesentlichen V-förmige Verschleißplatte 9 angebracht. An seiner Oberseite sind an dem Gehäuse 2 weiterhin zwei Anschlag-Puffer 12 angebracht, die in der angehobenen Transportstellung zum Einsatz kommen.Further, part of the housing 2 are two lateral cheek plates 10, on which possibly (not shown) support runners or other support means (eg support wheels) may be attached. At the rear, a support structure 5 for a (further) support device 6 (such as, for example, the indicated support runner 7) is arranged on the housing 2. At the top of the housing 2, two pairs of tabs 11 are provided, to which a (not shown) lifting device can be connected, by means of which the suction head 1 can be raised to a transport position. The support unit comprising the individual support means defines when lowered onto the surface 8 to be cleaned suction head 1, in particular when the lifting device is switched to a "floating position", the position of the housing 2 above the surface 8. To protect the suction head 1 in particular at an uneven surface 8, a (replaceable) substantially V-shaped wear plate 9 is attached to the underside of the housing 2. On its upper side are on the housing 2 continue two stop buffer 12th attached, which are used in the raised transport position.

In Arbeitsrichtung A vor dem Saugschacht 3 erstreckt sich ein flexibles flächiges Strömungsleitelement 13, das als eine aus einem Elastomermaterial bestehende, elastisch verformbare Strömungsleitplatte 14 ausgeführt ist. Die Strömungsleitplatte 14 ist an ihrem dem Saugschacht 3 benachbarten Rand relativ zum Saugschacht 3 an dem Gehäuse 2 fixiert, und zwar nicht nur hinsichtlich der Position des Randes, sondern auch hinsichtlich der Orientierung, d.h. der Neigung des Randbereichs 15. Und zwar ist der dem Saugschacht 3 benachbarte Randbereich 15 der Strömungsleitplatte 14 an einem gegenüber der frontseitigen Begrenzung 16 des Saugschachts 3 über einen Sprung 17 versetzten flächigen Gehäuseabschnitt 18, dessen Neigung im Wesentlichen der Neigung des Saugschachtes 3 entspricht, fixiert, so dass die innere, der zu reinigenden Oberfläche 8 zugewandte Oberfläche 19 der Strömungsleitplatte 14 möglichst stetig, d.h. ohne nennenswerten Versatz, Spalt oder Knick in den Saugschacht übergeht.In the working direction A in front of the suction shaft 3, a flexible planar flow guide 13 extends, which is designed as an elastically deformable flow guide plate 14 consisting of an elastomer material. The flow guide plate 14 is fixed to the casing 2 at its edge adjacent to the suction chute 3 relative to the suction chute 3, not only with respect to the position of the edge, but also with respect to the orientation, i. Namely, the edge portion 15 of the flow guide plate 14 adjacent to the suction chute 3 is fixed to a flat housing portion 18 offset from the front boundary 16 of the suction chute 3 by a jump 17 whose inclination substantially corresponds to the inclination of the suction chute 3 , so that the inner, the surface to be cleaned 8 facing surface 19 of the flow guide 14 as steady as possible, ie without appreciable misalignment, gap or crease passes into the suction shaft.

Der in Arbeitsrichtung A vordere Rand der Strömungsleitplatte 14 ist aus seiner in Fig. 1 veranschaulichten zurückgezogenen Stellung längs der im Wesentlichen horizontalen, d.h. in Arbeitsrichtung A nur leicht geneigten Richtung B nach vorne bewegbar. Hierzu ist der vordere Randbereich 20 der Strömungsleitplatte 14 mittels der Klemmschrauben 21 und der Klemmleiste 22 an einer Befestigungsleiste 23 fixiert, welche ihrerseits mit vier Rohrabschnitten 24, 25 verschweißt ist. Die vier Rohrabschnitte 24, 25 sind drehbar auf einer Welle 26 aufgenommen, die von zwei Führungsstangen 27 getragen wird, welche ihrerseits jeweils in zwei Führungsblöcken 28 verschiebbar geführt sind. Die Führungsblöcke 28 sind wiederum an Aussteifungsrippen 29 des Gehäuses 2 angebracht. Die hierdurch gebildeten Linearführungen 30 sind zu ihrem Schutz vor Verschmutzung von einer Verkleidung 31 - diese ist nur bei der rechten Linearführung gezeigt - umgeben. Mittig an der Welle 26 greift eine als Hydraulikzylinder 32 ausgeführte Verstelleinrichtung 33 an. Hierzu ist endseitig an der Kolbenstange 34 des Hydraulikzylinders 32 ein Kopfstück 35 angebracht, das seinerseits mit der Welle 26 verbunden ist. An seinem rückwärtigen Ende 36 ist der Hydraulikzylinder 32 an dem Gehäuse 2 des Saugkopfes 1 fixiert.The front in the direction of A front edge of the flow baffle 14 is made of his in Fig. 1 illustrated retracted position along the substantially horizontal, ie in the direction of A only slightly inclined direction B movable forward. For this purpose, the front edge region 20 of Flow guide plate 14 is fixed by means of the clamping screws 21 and the terminal block 22 to a fastening strip 23, which in turn is welded to four pipe sections 24, 25. The four pipe sections 24, 25 are rotatably received on a shaft 26 which is supported by two guide rods 27, which in turn are guided in each case in two guide blocks 28 slidably. The guide blocks 28 are in turn attached to stiffening ribs 29 of the housing 2. The linear guides 30 formed thereby are to protect them from contamination of a panel 31 - this is shown only in the right linear guide - surrounded. Centered on the shaft 26 engages an executed as a hydraulic cylinder 32 adjusting 33. For this purpose, a head piece 35 is attached to the end of the piston rod 34 of the hydraulic cylinder 32, which in turn is connected to the shaft 26. At its rear end 36, the hydraulic cylinder 32 is fixed to the housing 2 of the suction head 1.

Mittels der Verstelleinrichtung 33 kann die Strömungsleitplatte 14 aus ihrer in den Figuren 1 und 3 veranschaulichten maximal gewölbten Geometrie, in welcher der Scheitel 37 einen nur minimalen Abstand zur zu reinigenden Oberfläche 8 einhält, heraus in eine gestreckte Geometrie überführt werden, in der der Scheitel einen maximalen Abstand zur zu reinigenden Oberfläche 8 einhält. Beliebige Zwischenstellungen, in der die Strömungsleitplatte 14 mehr oder weniger weit "durchhängt", sind ebenfalls möglich. Relevant ist, dass unabhängig von der jeweils eingestellten Gestalt bzw. Geometrie der Strömungsleitplatte 14 deren hinterer Randbereich 15 aufgrund seiner oben erläuterten Einspannung ohne nennenswerten Versatz, Spalt oder Knick in den Saugschacht 3 übergeht. Dies ist für ein gutes Reinigungsergebnis bei geringer Leistungsaufnahme des Sauggebläses und niedrigen Geräuschemissionen bedeutsam. Der vordere Randbereich 20 der Strömungsleitplatte 14 kann indessen seine Neigung je nach der Stellung der Welle 26 frei ändern, d.h. der Geometrie der Strömungsleitplatte 14 anpassen.By means of the adjusting device 33, the flow guide plate 14 from its in the FIGS. 1 and 3 illustrated maximum arched geometry in which the vertex 37 maintains a minimum distance to the surface to be cleaned 8, are transferred out into an elongated geometry in which the vertex maintains a maximum distance to the surface to be cleaned 8. Any intermediate positions in which the flow guide plate 14 more or less "sags" are also possible. Relevant, that regardless of the respective set shape or geometry of the flow guide plate 14 whose rear edge region 15 passes into the suction shaft 3 due to its above-explained clamping without significant offset, gap or crease. This is important for a good cleaning result with low power consumption of the suction fan and low noise emissions. The front edge region 20 of the flow guide plate 14 can, however, freely change its inclination, depending on the position of the shaft 26, ie, adapt the geometry of the flow guide plate 14.

Nach Fig. 4 besteht eine bevorzugte Abwandlung des in den Figuren 1 bis 3 veranschaulichten Ausführungsbeispiels für einen Saugkopf einer erfindungsgemäßen Kehrmaschine darin, dass das flächige Strömungsleitelement 13 frontseitig, d.h. entfernt von dem Saugschacht 3 über eine Umlenkwalze 38 geführt ist. Die strömungstechnisch wirksame Erstreckung des Strömungsleitelements 13 reicht von der Umlenkwalze 38 bis zu dem dem Saugschacht benachbarten Randabschnitt 15. Die Verstelleinrichtung kann wiederum beispielsweise einen Hydraulikzylinder umfassen, welcher an dem um die Umlenkwalze 38 herum geführten Ende des flächigen Strömungsleitelements 13 angreift. Diese Bauweise bietet sich bei der Ausführung des Strömungsleitelements 13 mit einer vergleichsweise geringen Steifigkeit an, beispielsweise wenn Strömungsleitelement aus einer Mehrzahl gelenkig miteinander verbundener Lamellen besteht. Angedeutet ist in Fig. 4 auch eine Zwischenstellung zwischen der maximal gewölbten und der maximal gestreckten Geometrie, in der das flächige Strömungsleitelement 13 an seinem Scheitel einen mittleren Abstand zu der zu reinigenden Oberfläche einhält. Die mögliche konstruktive Umsetzung dieser Variante lässt sich aus der vorstehenden Erläuterung des in den Figuren 1 bis 3 gezeigten Ausführungsbeispiels herleiten.To Fig. 4 there is a preferred modification of the in the FIGS. 1 to 3 illustrated embodiment of a suction head of a sweeping machine according to the invention in that the planar flow guide 13 is front, that is guided away from the suction shaft 3 via a guide roller 38. The fluidically effective extension of the flow guide 13 extends from the guide roller 38 to the suction section adjacent edge portion 15. The adjustment may in turn comprise, for example, a hydraulic cylinder which engages the guided around the guide roller 38 end of the planar flow guide 13. This construction offers itself in the execution of the flow guide 13 with a comparatively low rigidity, for example, when flow guide consists of a plurality of hingedly interconnected slats. implied is in Fig. 4 also an intermediate position between the maximum arched and the maximum elongated geometry, in which the planar flow guide element 13 maintains at its apex a mean distance from the surface to be cleaned. The possible constructive implementation of this variant can be seen from the above explanation of the in the FIGS. 1 to 3 derived embodiment.

Letzteres gilt in gleicher Weise für die in Fig. 5 schematisch gezeigte weitere Abwandlung, bei der das Strömungsleitelement 13 entfernt von dem Saugschacht 3 auf eine Wickelwalze 39 wickelbar ist. Die Verstelleinrichtung bewirkt bei dieser Abwandlung ein Verdrehen der Wickelwalze 39. Auch hier ist dementsprechend die Geometrie des Strömungsleitelements 13 zwischen einer relativ gewölbten Form mit einem relativ geringen Mindestabstand zur zu reinigenden Oberfläche 8 und einer relativ gestreckten Form mit einem relativ großen Mindestabstand zur zu reinigenden Oberfläche veränderbar. Die strömungstechnisch wirksame Erstreckung des flächigen Strömungsleitelements 13 reicht hier von der Wickelwalze 39 bis zu dem dem Saugschacht benachbarten Randabschnitt 15.The latter applies equally to the in Fig. 5 schematically shown further modification in which the flow guide 13 is remote from the suction shaft 3 on a winding roller 39 wound. The adjustment causes in this modification, a rotation of the winding roller 39. Again, the geometry of the Strömungsleitelements 13 is accordingly between a relatively curved shape with a relatively small minimum distance to be cleaned surface 8 and a relatively elongated shape with a relatively large minimum distance to the surface to be cleaned variable. The flow-effective extension of the planar flow-guiding element 13 extends here from the winding roller 39 to the edge section 15 adjacent to the suction shaft.

Claims (10)

Aufnehmende Kehrmaschine mit einem Schmutzsammelbehälter, an welchen einerseits ein Sauggebläse und andererseits über eine Saugleitung ein Saugkopf (1) mit einem Saugschacht (3) und einem sich in Arbeitsrichtung (A) vor diesem erstreckenden flexiblen flächigen Strömungsleitelement (13) angeschlossen sind, wobei das Strömungsleitelement bei gleichbleibender Position des Saugschachts (3) mittels einer an seinem dem Saugschacht abgewandten Randbereich (20) angreifenden Verstelleinrichtung (33) formänderbar ist dergestalt, dass seine Geometrie zwischen einer relativ gewölbten Form mit einem relativ geringen Mindestabstand zur zu reinigenden Oberfläche (8) und einer relativ gestreckten Form mit einem relativ großen Mindestabstand zur zu reinigenden Oberfläche veränderbar ist.Receiving sweeper with a dirt collector to which on the one hand a suction fan and on the other hand via a suction suction head (1) with a suction shaft (3) and in the working direction (A) extending in front of this flexible planar flow guide (13) are connected, wherein the flow guide at the same position of the suction shaft (3) by means of an adjoining the suction shaft edge region (20) adjusting device (33) is formable such that its geometry between a relatively curved shape with a relatively small minimum distance to the surface to be cleaned (8) and a relatively elongated shape with a relatively large minimum distance to the surface to be cleaned is changeable. Kehrmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der dem Saugschacht (3) abgewandte Rand (20) des Strömungsleitelements (13) mittels der Verstelleinrichtung (33) zumindest im Wesentlichen linear verschiebbar ist.Sweeper according to Claim 1, characterized in that the edge (20) of the flow-guiding element (13) facing away from the suction shaft (3) is at least substantially linearly displaceable by means of the adjusting device (33). Kehrmaschine nach Anspruch 2, dadurch gekennzeichnet, dass der dem Saugschacht (3) abgewandte Rand (20) des Strömungsleitelements (13) im Wesentlichen parallel zur zu reinigenden Oberfläche (8) verschiebbar ist.Sweeping machine according to Claim 2, characterized in that the edge (20) of the flow-guiding element (13) facing away from the suction shaft (3) is displaceable essentially parallel to the surface (8) to be cleaned. Kehrmaschine nach Anspruch 2 oder Anspruch 3,
dadurch gekennzeichnet, dass das Strömungsleitelement (13) entfernt von dem Saugschacht (3) über eine Umlenkwalze (38) geführt ist.Sweeper according to claim 2 or claim 3,
characterized in that the flow guide element (13) is guided away from the suction shaft (3) via a deflection roller (38). Kehrmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Strömungsleitelement (13) entfernt von dem Saugschacht (3) auf eine Wickelwalze (39) wickelbar ist.Sweeper according to claim 1, characterized in that the flow guide (13) remote from the suction shaft (3) on a winding roller (39) can be wound. Kehrmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Position des dem Saugschacht (3) benachbarten Randes des Strömungsleitelements (13) relativ zum Saugschacht fixiert ist.Sweeper according to one of claims 1 to 5, characterized in that the position of the suction shaft (3) adjacent the edge of the flow guide (13) is fixed relative to the suction shaft. Kehrmaschine nach Anspruch 6, dadurch gekennzeichnet, dass der dem Saugschacht (3) unmittelbar benachbarte Randbereich (15) des Strömungsleitelements relativ zum Saugschacht fixiert ist.Sweeper according to Claim 6, characterized in that the edge region (15) of the flow-guiding element immediately adjacent to the suction shaft (3) is fixed relative to the suction shaft. Kehrmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Strömungsleitelement (13) unmittelbar am Eingang des Saugschachts (3) endet.Sweeper according to one of claims 1 to 7, characterized in that the flow guide (13) ends immediately at the entrance of the suction shaft (3). Kehrmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Strömungsleitelement (13) aus einer Mehrzahl gelenkig miteinander verbundener Lamellen besteht.Sweeper according to one of claims 1 to 8, characterized in that the flow guide (13) consists of a plurality of hingedly interconnected slats. Kehrmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Strömungsleitelement (13) als eine elastisch verformbare Strömungsleitplatte (14) ausgeführt ist.Sweeper according to one of claims 1 to 8, characterized in that the flow-guiding element (13) is designed as an elastically deformable flow-guiding plate (14).
EP14000674.3A 2013-03-02 2014-02-26 Collecting road sweeper Active EP2775034B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013003536.8A DE102013003536A1 (en) 2013-03-02 2013-03-02 Pick-up sweeper

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EP2775034A1 true EP2775034A1 (en) 2014-09-10
EP2775034B1 EP2775034B1 (en) 2018-01-31

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ES (1) ES2661528T3 (en)

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CN107059725A (en) * 2016-12-28 2017-08-18 湖北聚力汽车技术股份有限公司 A kind of vacuum sweeper sucker rubber board overturns avoiding mechanism
CN107059728A (en) * 2017-05-05 2017-08-18 湖北合加环境设备有限公司 A kind of suction nozzle/sucker conduit special purpose device of sweeper/sweeping machine
CN107326848A (en) * 2017-08-07 2017-11-07 武汉理工大学 Suction sweeping type sweeper suction nozzle
CN107435308A (en) * 2017-08-18 2017-12-05 徐工集团工程机械有限公司 Sweeper nozzle structure and sweeper
CN108343015A (en) * 2018-02-07 2018-07-31 长沙中联重科环境产业有限公司 Suction nozzle and road sweeper for road sweeper
EP3825465A1 (en) 2019-11-19 2021-05-26 Bucher Municipal AG Self-propelled sweeping machine for cleaning floor surfaces which can be driven or walked on

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CN106400723B (en) * 2016-11-28 2018-09-04 徐工集团工程机械有限公司 Sweeping machine Acetabula device and sweeping machine
CN107964905B (en) * 2017-11-20 2023-05-30 江苏徐工国重实验室科技有限公司 Suction nozzle of road sweeper and road sweeper

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CN107059725A (en) * 2016-12-28 2017-08-18 湖北聚力汽车技术股份有限公司 A kind of vacuum sweeper sucker rubber board overturns avoiding mechanism
CN107059728A (en) * 2017-05-05 2017-08-18 湖北合加环境设备有限公司 A kind of suction nozzle/sucker conduit special purpose device of sweeper/sweeping machine
CN107326848A (en) * 2017-08-07 2017-11-07 武汉理工大学 Suction sweeping type sweeper suction nozzle
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CN107435308A (en) * 2017-08-18 2017-12-05 徐工集团工程机械有限公司 Sweeper nozzle structure and sweeper
CN108343015A (en) * 2018-02-07 2018-07-31 长沙中联重科环境产业有限公司 Suction nozzle and road sweeper for road sweeper
EP3825465A1 (en) 2019-11-19 2021-05-26 Bucher Municipal AG Self-propelled sweeping machine for cleaning floor surfaces which can be driven or walked on

Also Published As

Publication number Publication date
DE102013003536A1 (en) 2014-09-04
EP2775034B1 (en) 2018-01-31
ES2661528T3 (en) 2018-04-02

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