EP1108092B1 - Sweeping unit - Google Patents

Sweeping unit Download PDF

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Publication number
EP1108092B1
EP1108092B1 EP00943809A EP00943809A EP1108092B1 EP 1108092 B1 EP1108092 B1 EP 1108092B1 EP 00943809 A EP00943809 A EP 00943809A EP 00943809 A EP00943809 A EP 00943809A EP 1108092 B1 EP1108092 B1 EP 1108092B1
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EP
European Patent Office
Prior art keywords
cylinder
adjustment
hydraulic
rotary brush
control device
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP00943809A
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German (de)
French (fr)
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EP1108092A1 (en
Inventor
Mauno Olavi Ruuska
Janko Tuskan
Clemens Rosa
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Schmidt Holding GmbH
Patria Vammas Oy
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Schmidt Holding GmbH
Patria Vammas Oy
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Publication of EP1108092A1 publication Critical patent/EP1108092A1/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/02Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
    • E01H1/05Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes
    • E01H1/056Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes having horizontal axes

Definitions

  • the present invention relates to a sweeping unit for Attachment to a carrier vehicle or a trailer, comprising a support frame and at least one in it their longitudinal axis rotatably, motor-driven Roller brush, the support frame having support wheels, their vertical distance from the axis of the roller brush can be changed by means of an adjustment unit, which at least one hydraulic adjusting cylinder and one Control unit includes.
  • Sweeping units of the type specified above are in various designs known, for example from European patent 0372258 and German Publication 3740215. Also known Sweeping units, which are essentially generic Have structure, but differ from it in that that the hydraulic adjusting cylinder is not is set via a control unit, but rather Is part of a hydraulic control loop and that about it in addition, the support frame does not have support wheels; Such sweeping units are, for example, the German Laid-open documents 2455200 and 2821627 and the European patent applications 0189371 and 0843047 removable.
  • the present invention aims at the present invention to a sweeping unit of the generic type create, with which the optimal sweeping mirror with a high degree of accuracy.
  • this object solved in that with the at least one adjusting cylinder a feed cylinder is hydraulically connected, its piston or other signal transmitter with a counting and / or Position measuring device, whose signal to the control unit is switched, or a mechanical adjustment drive is connected and that with the at least an adjusting cylinder communicating hydraulic Working area has a smaller cross-sectional area than the at least one adjustment cylinder.
  • the feed cylinder serves the volumetric Measuring the hydraulic fluid to the minimum an adjusting cylinder that the delivery movement of at least one adjusting cylinder from a reference position in its the optimal sweeping mirror width corresponding working position corresponds.
  • the reference position can be different characteristic Positions of the roller brush relative to that to be cleaned Surface, referring to which the Control device that delivery movement of at least calculated an adjustment cylinder which is required around the roller brush in its by the optimal Sweeping mirror width marked working position bring. It is particularly preferred as a reference position the ground contact position of the roller brush and the corresponding position of the at least one Adjusting cylinder used because in this way the Bristle wear is automatically compensated (see below).
  • a bypass line is particularly preferred to the feed cylinder, since the latter is only for the exact lowering of the roller brush from its ground contact position is needed in their working position. Neither when lowering the roller brush into its ground contact position you still need to lift the roller brush a volumetric determination of the at least one Adjusting cylinder supplied or out of this Volume of hydraulic fluid.
  • the above explained design of the hydraulic system with a Feed cylinder results in a particularly exact Setting option for the at least one adjusting cylinder.
  • the feed cylinder on the Piston of the feed cylinder is a mechanical adjustment drive acts so that the feed cylinder itself the Functions as a pump.
  • the feed cylinder between a hydraulic pump and the at least one adjusting cylinder switched. He runs in this case, with the volume of the at least one adjustment cylinder supplied hydraulic fluid by the number of strokes of the feed cylinder and / or - in the case of incomplete strokes - the path of the Piston of the feed cylinder is determined.
  • the Invention is a drive torque or drive power the roller brush or one coupled to it Size detecting sensor provided, the signal on the control unit is switched, the control unit being the working position corresponding to the optimal sweeping mirror width of the adjusting element as a function of the Lowering the roller brush by a sudden Rise of the sensor signal marked ground contact position of the adjusting member determined.
  • the control unit includes one corresponding compensation circuit, for example in Form of a characteristic curve that shows the infeed movement, i.e. the Difference between working position and ground contact position of the adjusting element, depending on the indicates the actual diameter of the roller brush.
  • the latter can be done directly from the ground contact position derive from the adjusting element, thereby on the support wheels on the surface to be cleaned - each roller brush diameter has exactly one contact with the ground of the adjusting element corresponds.
  • Diameter of the roller brush which is also the position the roller brush relative to the support frame in the ground contact position the roller brush can evaluate in can be used in the same way.
  • the decisive factor is that the diameter of the roller brush not - measured directly via sensors - but instead rather from the position of the roller brush at the moment of their ground contact, and thus indirectly using them of the signal from the ground contact sensor is derived.
  • the sweeping unit illustrated in the drawing includes a roller brush 1, which is within a support frame 2 its axis 3 rotatably and by a hydraulic motor 4 is driven.
  • the support frame 2 in turn comprises two hydraulic elements forming the adjusting elements V.
  • Adjustment cylinders 5 and 6 the piston rod each of the two hydraulic adjustment cylinders with each a support wheel 7 or 8 is connected.
  • the - only schematically illustrated - technical-constructive Design is such that by means of Adjustment cylinders 5 and 6 the vertical distance between the support wheels 7, 8 and the axis 3 of the roller brush 1 is changeable. Such constructions are adequate known, so that for a more detailed explanation can be dispensed with.
  • the sweeping unit itself is by means of a - not shown - support arrangement on a carrier vehicle suspended.
  • the carrying arrangement allows lifting the sweeping unit in a transport position and lowering the sweeping unit in a working position in which the Jockey wheels 7 and 8 on the surface to be cleaned roll. This is also part of the state of the art and therefore requires no explanation at this point.
  • the function of the sweeping unit is controlled by a control unit 9 controlled. This is via a control line 10 in connection with the operating point 11. Will over one corresponding switch 12 at operating point 11 Sweeping unit put into operation, so run within the hydraulics controlled by the controller 9 the following Steps from:
  • valves 13 and 14 are in from their locked position their flow position switched, the control valve 15 will move from its locked position to its crossover position switched in which there are connections P and B on the one hand and A and T on the other hand connects, and the Pump 16 is started up. That way the hydraulic working spaces 17, 18 of the adjusting cylinders 5 and 6 filled with hydraulic fluid, and the Piston rods of the adjustment cylinders are under Displacement in the hydraulic work rooms 19 and 20 existing hydraulic fluid via the valve 14 and the back pressure valve 21 in the sump 22 in their maximum position extended.
  • valves 27 and 28 in their Flow position switched. This way Hydraulic fluid via the pump 16 and the as before control valve switched in crossover position 15 in the hydraulic working spaces 19 and 20 of the adjusting cylinders 5 and 6. Their piston rods slowly retract, the hydraulic working rooms 17 and 18 existing hydraulic fluid via the (open) Valve 28 and the back pressure valve 21 in the sump 22nd is ousted. This leads to a gradual lowering the brush roller 1 in the direction of the to be cleaned Surface.
  • the number of strokes of the feed cylinder 24 that do so are required, the roller brush 1 from its ground contact position to bring them into their working position depend in particular on the hydraulic reduction ratio between the feed cylinder 24 and the Adjusting cylinders 5 and 6.
  • the piston rod of the feed cylinder 24 acts on a counter Z in the form of a pulse counter 31, which is connected to the control unit 9.
  • the control unit 9 Corresponds to the number determined by the pulse counter 31 of strokes the value specified by the control unit 9, are all valves 13, 14, 27 and 28 and the Control valve 15 closed and the hydraulic pump 16 off.
  • valves 13 and 14 take place 27 and 28 can be controlled. This way a fine adjustment lifting process. This allows external Interference that does not change too quickly is simple be compensated.
  • the plow affects with its weight, the geometry of the vehicle frame is very strong related to the road surface and corresponding to the Sweeping level.

Abstract

A sweeping unit has a supporting frame and at least one motor-driven rotary brush which is rotationally mounted about an longitudinal axis thereof The supporting frame is provided with supporting wheels, and a distance of the wheels from the axis of the rotary brush is controlled by an adjusting device having at least one hydraulic adjusting cylinder and a control device. A supply cylinder is hydraulically connected to the at least one adjusting cylinder and has a piston, or other signalling component, connected to a metering device and/or distance measurement device. A signal from the metering and/or distance measurement device is connected to the control unit. A working area of the supply cylinder communicates hydraulically with the at least one adjusting cylinder and has a smaller cross-sectional surface area than that of the at least one adjusting cylinder. Alternatively, the piston of the supply cylinder is connected to a mechanical adjusting drive mechanism.

Description

Die vorliegende Erfindung betrifft ein Kehraggregat zum Anbau an ein Trägerfahrzeug oder an einen Anhänger, umfassend einen Tragrahmen und mindestens eine darin um ihre Längsachse drehbar gelagerte, motorisch angetriebene Walzenbürste, wobei der Tragrahmen Stützräder aufweist, deren vertikaler Abstand zu der Achse der Walzenbürste mittels einer Verstelleinheit veränderbar ist, welche mindestens einen hydraulischen Verstellzylinder und ein Steuergerät umfaßt.The present invention relates to a sweeping unit for Attachment to a carrier vehicle or a trailer, comprising a support frame and at least one in it their longitudinal axis rotatably, motor-driven Roller brush, the support frame having support wheels, their vertical distance from the axis of the roller brush can be changed by means of an adjustment unit, which at least one hydraulic adjusting cylinder and one Control unit includes.

Kehraggregate der vorstehend angegebenen Art sind in verschiedenen Ausführungen bekannt, beispielsweise aus der europäischen Patentschrift 0372258 und der deutschen Offenlegungsschrift 3740215. Bekannt sind des weiteren Kehraggregate, die im wesentlichen einen gattungsgemäßen Aufbau aufweisen, sich von diesem jedoch dadurch unterscheiden, daß der hydraulische Verstellzylinder nicht über ein Steuergerät eingestellt wird, sondern vielmehr Teil eines hydraulischen Regelkreises ist und daß darüber hinaus der Tragrahmen nicht über Stützräder verfügt; derartige Kehraggregate sind beispielsweise den deutschen Offenlegungsschriften 2455200 und 2821627 sowie den europäischen Patentanmeldungen 0189371 und 0843047 entnehmbar.Sweeping units of the type specified above are in various designs known, for example from European patent 0372258 and German Publication 3740215. Also known Sweeping units, which are essentially generic Have structure, but differ from it in that that the hydraulic adjusting cylinder is not is set via a control unit, but rather Is part of a hydraulic control loop and that about it in addition, the support frame does not have support wheels; Such sweeping units are, for example, the German Laid-open documents 2455200 and 2821627 and the European patent applications 0189371 and 0843047 removable.

Für sämtliche der aus den vorstehend angegebenen Publikationen bekannten Kehraggregate ist die korrekte Einstellung der Kehrspiegelbreite von ausschlaggebender Bedeutung für einen effizienten und zugleich materialschonenden Kehrbetrieb. So, wie dies in der europäischen Patentschrift 0372258 im Detail erläutert ist, ist die optimale Kehrspiegelbreite gekennzeichnet durch ein gutes Reinigungsergebnis bei geringem Borstenverschleiß. Liegt die Kehrspiegelbreite unterhalb des optimalen Werts, läßt die Reinigungsleistung spürbar nach. Bei einer Kehrspiegelbreite oberhalb des optimalen Werts nimmt hingegen der Borstenverschleiß ohne nennenswerte Verbesserung des Reinigungsergebnisses spürbar zu.For all of the above Publications known sweeping units is the correct one Adjustment of the sweeping mirror width from crucial Importance for an efficient and at the same time gentle on materials Sweeping. Just like this in European Patent specification 0372258 is explained in detail optimal sweeping mirror width characterized by a good one Cleaning result with little bristle wear. Lies the sweeping mirror width below the optimal value the cleaning performance noticeably. At a Sweeping mirror width increases above the optimal value however, the bristle wear without any noteworthy Noticeably improve the cleaning result.

Bei keinem der aus den oben angegebenen Publikation bekannten Kehraggregate läßt sich die Kehrspiegelbreite mit dem gewünschten Maß an Genauigkeit einstellen. Dies gilt namentlich für den Stand der Technik gemäß den gattungsbildenden Druckschriften. In diesem Zusammenhang ist zu bedenken, daß bei einer üblichen Walzenbürste mit einem Durchmesser von 914 mm die Höhenverstellung von 1 mm eine Kehrspiegelveränderung von ca. 60 mm bedeutet. Die Tatsache, daß als geeignete Kehrspiegelbreite Werte zwischen 60 mm und 100 mm angesehen werden, macht deutlich, welche Anforderungen in der Praxis an die Genauigkeit der Verstelleinheit gestellt werden.None of the publications listed above known sweeping units, the sweeping mirror width adjust with the desired level of accuracy. This applies in particular to the state of the art according to generic publications. In this context it should be borne in mind that with a conventional roller brush a diameter of 914 mm the height adjustment of 1 mm means a sweeping mirror change of approx. 60 mm. The fact that as a suitable sweeping mirror width values between 60 mm and 100 mm are considered clear what practical requirements the Accuracy of the adjustment unit.

Vor dem Hintergrund des vorstehend dargelegten Nachteils des Standes der Technik zielt die vorliegende Erfindung darauf ab, ein Kehraggregat der gattungsgemäßen Art zu schaffen, bei welchem sich der optimale Kehrspiegel mit einem hohen Maß an Genauigkeit einstellen läßt.Against the background of the disadvantage outlined above the present invention aims at the present invention to a sweeping unit of the generic type create, with which the optimal sweeping mirror with a high degree of accuracy.

Gemäß der vorliegenden Erfindung wird diese Aufgabe dadurch gelöst, daß mit dem mindestens einen Verstellzylinder ein Speisezylinder hydraulisch verbunden ist, dessen Kolben oder sonstiger Signalgeber mit einer Zählund/oder Wegmeßeinrichtung, dessen Signal auf das Steuergerät geschaltet ist, oder einem mechanischen Verstellantrieb in Verbindung steht und dessen mit dem mindestens einen Verstellzylinder kommunizierender hydraulischer Arbeitsraum eine geringeren Querschnittsfläche aufweist als der mindestens eine Verstellzylinder.According to the present invention, this object solved in that with the at least one adjusting cylinder a feed cylinder is hydraulically connected, its piston or other signal transmitter with a counting and / or Position measuring device, whose signal to the control unit is switched, or a mechanical adjustment drive is connected and that with the at least an adjusting cylinder communicating hydraulic Working area has a smaller cross-sectional area than the at least one adjustment cylinder.

Der Speisezylinder dient dabei der volumetrischen Zumessung der Hydraulikflüssigkeit zu dem mindestens einen Verstellzylinder, die der Zustellbewegung des mindestens einen Verstellzylinders von einer Referenzstellung in seine der optimalen Kehrspiegelbreite entsprechende Arbeitsstellung entspricht. Die Referenzstellung kann dabei verschiedenen charakteristische Stellungen der Walzenbürste relativ zu der zu reinigenden Oberfläche entsprechen, unter Bezugnahme auf welche das Steuergerät diejenige Zustellbewegung des mindestens einen Verstellzylinders berechnet, die erforderlich ist, um die Walzenbürste in ihre durch die optimale Kehrspiegelbreite gekennzeichnete Arbeitsstellung zu bringen. Besonders bevorzugt wird als Referenzstellung die Bodenkontaktstellung der Walzenbürste und die korrespondierende Stellung des mindestens einen Verstellzylinders herangezogen, weil auf diese Weise der Borstenverschleiß automatisch kompensiert wird (s.u.). Besonders bevorzugt besteht dabei eine Umgehungsleitung zu dem Speisezylinder, da letzterer lediglich für die exakte Absenkung der Walzenbürste aus ihrer Bodenkontaktstellung in ihre Arbeitsstellung benötigt wird. Weder beim Absenken der Walzenbürste in ihre Bodenkontaktstellung noch beim Anheben der Walzenbürste bedarf es einer volumetrischen Bestimmung des dem mindestens einen Verstellzylinder zugeführten bzw. aus diesem abströmenden Volumens an Hydraulikflüssigkeit. Die vorstehend erläuterte Ausgestaltung der Hydraulikanlage mit einem Speisezylinder resultiert in einen besonders exakten Einstellmöglichkeit für den mindestens einen Verstellzylinder. The feed cylinder serves the volumetric Measuring the hydraulic fluid to the minimum an adjusting cylinder that the delivery movement of at least one adjusting cylinder from a reference position in its the optimal sweeping mirror width corresponding working position corresponds. The reference position can be different characteristic Positions of the roller brush relative to that to be cleaned Surface, referring to which the Control device that delivery movement of at least calculated an adjustment cylinder which is required around the roller brush in its by the optimal Sweeping mirror width marked working position bring. It is particularly preferred as a reference position the ground contact position of the roller brush and the corresponding position of the at least one Adjusting cylinder used because in this way the Bristle wear is automatically compensated (see below). A bypass line is particularly preferred to the feed cylinder, since the latter is only for the exact lowering of the roller brush from its ground contact position is needed in their working position. Neither when lowering the roller brush into its ground contact position you still need to lift the roller brush a volumetric determination of the at least one Adjusting cylinder supplied or out of this Volume of hydraulic fluid. The above explained design of the hydraulic system with a Feed cylinder results in a particularly exact Setting option for the at least one adjusting cylinder.

Zwar ist im Rahmen der vorstehend erläuterten Weiterbildung der vorliegenden Erfindung denkbar, daß auf den Kolben des Speisezylinders ein mechanischer Verstellantrieb wirkt, so daß der Speisezylinder selbst die Funktion einer Pumpe übernimmt. Besonders bevorzugt ist jedoch der Speisezylinder zwischen einer Hydraulikpumpe und dem mindestens einen Verstellzylinder geschaltet. Er läuft in diesem Falle mit, wobei das Volumen der dem mindestens einen Verstellzylinder zugeführten Hydraulikflüssigkeit durch die Anzahl der Hübe des Speisezylinders und/oder - bei nicht vollständigen Hüben - den Weg des Kolbens des Speisezylinders ermittelt wird.It is within the framework of the training explained above the present invention conceivable that on the Piston of the feed cylinder is a mechanical adjustment drive acts so that the feed cylinder itself the Functions as a pump. Is particularly preferred however, the feed cylinder between a hydraulic pump and the at least one adjusting cylinder switched. He runs in this case, with the volume of the at least one adjustment cylinder supplied hydraulic fluid by the number of strokes of the feed cylinder and / or - in the case of incomplete strokes - the path of the Piston of the feed cylinder is determined.

Gemäß einer anderen bevorzugten Weiterbildung der Erfindung ist ein das Antriebsmoment oder die Antriebsleistung der Walzenbürste oder eine hiermit gekoppelte Größe erfassender Sensor vorgesehen, dessen Signal auf das Steuergerät geschaltet ist, wobei das Steuergerät die der optimalen Kehrspiegelbreite entsprechende Arbeitsstellung des Verstellorgans als Funktion der beim Absenken der Walzenbürste durch einen sprunghaften Anstieg des Sensorsignals gekennzeichneten Bodenkontaktstellung des Verstellorgans ermittelt.According to another preferred development of the Invention is a drive torque or drive power the roller brush or one coupled to it Size detecting sensor provided, the signal on the control unit is switched, the control unit being the working position corresponding to the optimal sweeping mirror width of the adjusting element as a function of the Lowering the roller brush by a sudden Rise of the sensor signal marked ground contact position of the adjusting member determined.

Bei dem solchermaßen weitergebildeten Kehraggregat wird somit der vom Borstenverschleiß abhängige tatsächliche Durchmesser der Walzenbürste beim Einstellen von deren Lage relativ zur zu reinigenden Oberfläche automatisch berücksichtigt, indem bei dem einzelnen Kehreinsatz der Bodenkontakt der Walzenbürste und die diesen entsprechende Bodenkontaktstellung des Verstellorgans als Bezugspunkt für die der optimalen Kehrspiegelbreite entsprechende Arbeitsstellung des Verstellorgans herangezogen wird. Der Bodenkontakt der Walzenbürste bei ihrem Absenken wird dabei durch einen sprunghaften Anstieg des Sensorsignals ermittelt, das von einem Sensor abgegeben wird, der das Antriebsmoment oder die Antriebsleistung der Walzenbürste oder eine hiermit gekoppelte Größe erfaßt.In the sweeping unit developed in this way hence the actual bristle wear dependent Diameter of the roller brush when adjusting its Position automatically relative to the surface to be cleaned taken into account by the Floor contact of the roller brush and the latter corresponding ground contact position of the adjusting member as Reference point for the optimal sweeping mirror width appropriate working position of the adjusting element is used becomes. The contact of the roller brush with her Lowering is caused by a sudden increase in Sensor signal determined that emitted by a sensor the drive torque or drive power the roller brush or a size coupled to it detected.

Probleme, wie sie von Kehraggregaten nach dem Stand der Technik bekannt sind, treten bei einem Kehraggregat wie vorstehend beschrieben nicht auf. Weder ist, anders als im Falle der DE-OS 2455200 und 2821627 sowie der EP-A 0189371 und 0843047, die von dem Steuergerät eingestellte Kehrspiegelbreite abhängig von den Oberflächenverhältnissen, insbesondere der Rauhigkeit der zu reinigenden Oberfläche. Ebensowenig ist, anders als im Falle der EP-B 0372258 und der DE-OS 3740215, eine komplizierte, störanfällige Meßaufnehmeranordnung erforderlich. Trotzdem wird bei der Einstellung der Kehrspiegelbreite nicht ein von der Laufleistung der betreffenden Walzenbürste abhängiger mittlerer Abnutzungsgrad der Walzenbürste zugrundegelegt, sondern vielmehr der tatsächliche Verschleißgrad. Infolgedessen stellt diese Weiterbildung der Erfindung ein Kehraggregat bereit, bei welchem sich der optimale Kehrspiegel mit geringstem apparativem Aufwand automatisch exakt einstellen läßt, wobei sich das Kehraggregat darüber hinaus durch einen robusten, störungsunanfälligen Aufbau auszeichnet.Problems such as that of sweeping units according to the state of the art Technology are known to occur in a sweeping unit like not described above. Neither is different in the case of DE-OS 2455200 and 2821627 and EP-A 0189371 and 0843047, the one set by the control unit Sweeping mirror width depending on the surface conditions, especially the roughness of those to be cleaned Surface. Nor is it, unlike in the case of EP-B 0372258 and DE-OS 3740215, a complicated, Interference-prone sensor arrangement required. Nevertheless, when setting the sweeping mirror width not one of the mileage of the roller brush concerned dependent average degree of wear of the roller brush on the basis, but rather the actual Degree of wear. As a result, this training provides the invention a sweeping unit ready, in which the optimal sweeping mirror with the least equipment The effort can be automatically set exactly, which is Sweeping unit also through a robust, distinguishes fault-resistant construction.

Die vorstehend beschriebene Weiterbildung der Erfindung läßt sich bereits mit Vorteil einsetzen, wenn im Steuergerät die Arbeitsstellung des Verstellorgans aus dessen Bodenkontaktstellung bzw. sonstiger Referenzstellung durch Addition einer konstanten Größe ermittelt wird. In diesem Falle würde mit anderen Worten die Walzenbürste im Kehrbetrieb jeweils in eine Stellung abgesenkt werden, die um ein bestimmtes Maß (z.B. 2 mm) unterhalb der Bodenkontaktstellung liegt. Dies würde zwar infolge der geometrischen Verhältnisse bei fortschreitender Abnützung der Walzenbürste zu einer allmählichen Reduktion der Kehrspiegelbreite führen; diese würde jedoch - zumindest teilweise - durch eine zunehmende Härte der Bürste kompensiert, so daß das Reinigungsergebnis sich im wesentlichen nicht ändern würde.The development of the invention described above can already be used with advantage when in the control unit the working position of the adjusting element from its Ground contact position or other reference position is determined by adding a constant size. In in this case the roller brush would in other words Sweeping can be lowered into one position, which are a certain amount (e.g. 2 mm) below the Ground contact position. Although this would result from the geometric conditions as wear wears on the roller brush to gradually reduce the Lead sweeping mirror width; however, this would - at least partially - due to increasing brush hardness compensated so that the cleaning result in the would not significantly change.

Eine abermals bevorzugte Weiterbildung zeichnet sich demgegenüber allerdings dadurch aus, daß die Zustellbewegung des Verstellorgans, durch die sich dessen Arbeitsstellung von dessen Bodenkontaktstellung unterscheidet, von dem tatsächlichen Durchmesser der Walzenbürste abhängig ist. In diesem Falle umfaßt das Steuergerät eine entsprechende Kompensationsschaltung, beispielsweise in Form einer Kennkurve, die die Zustellbewegung, d.h. die Differenz zwischen Arbeitsstellung und Bodenkontaktstellung des Verstellorgans, in Abhängigkeit von dem tatsächlichen Durchmesser der Walzenbürste angibt. Letzterer läßt sich dabei unmittelbar aus der Bodenkontaktstellung des Verstellorgans ableiten, da - bei auf der zu reinigenden Oberfläche aufstehenden Stützrädern - jedem Durchmesser der Walzenbürste genau eine Bodenkontaktstellung des Verstellorgans entspricht. Andere geeignete Meßeinrichtungen zur Ermittlung des Durchmessers der Walzenbürste, die ebenfalls die Stellung der Walzenbürste relativ zum Tragrahmen in der Bodenkontaktstellung der Walzenbürste auswerten, können in gleicher Weise eingesetzt werden. Hierzu zählt insbesondere ein Winkelmesser, der die Winkelstellung mindestens eines Tragarmes der Walzenbürste relativ zu einer weiteren Komponente des Tragrahmens ermittelt. Another preferred further training is emerging in contrast, however, in that the infeed movement of the adjusting element, through which its working position differs from its contact with the ground, from the actual diameter of the roller brush is dependent. In this case, the control unit includes one corresponding compensation circuit, for example in Form of a characteristic curve that shows the infeed movement, i.e. the Difference between working position and ground contact position of the adjusting element, depending on the indicates the actual diameter of the roller brush. The latter can be done directly from the ground contact position derive from the adjusting element, thereby on the support wheels on the surface to be cleaned - each roller brush diameter has exactly one contact with the ground of the adjusting element corresponds. Other suitable measuring devices for determining the Diameter of the roller brush, which is also the position the roller brush relative to the support frame in the ground contact position the roller brush can evaluate in can be used in the same way. This includes in particular a protractor that measures the angular position at least one support arm of the roller brush relative to determined another component of the support frame.

Maßgeblich ist, daß jeweis der Durchmesser der Walzenbürste nicht - über Sensoren - direkt gemessen, sondern vielmehr aus der Stellung der Walzenbürste im Moment ihres Bodenkontakts, und somit mittelbar unter Nutzung des Signals des Bodenkontaktsensors abgeleitet wird.The decisive factor is that the diameter of the roller brush not - measured directly via sensors - but instead rather from the position of the roller brush at the moment of their ground contact, and thus indirectly using them of the signal from the ground contact sensor is derived.

Im Folgenden wird die vorliegende Erfindung anhand der Zeichnung näher erläutert. Diese zeigt das Hydraulikschema einer bevorzugten Ausführungsform des erfindungsgemäßen Kehraggregats.In the following, the present invention is based on the Drawing explained in more detail. This shows the hydraulic diagram a preferred embodiment of the invention Sweeping unit.

Das in der Zeichnung veranschaulichte Kehraggregat umfaßt eine Walzenbürste 1, die innerhalb eines Tragrahmens 2 um ihre Achse 3 drehbar gelagert und von einem Hydraulikmotor 4 angetrieben ist. Der Tragrahmen 2 umfaßt seinerseits zwei die Verstellorgane V bildende hydraulische Verstellzylinder 5 und 6, wobei die Kolbenstange jedes der beiden hydraulischen Verstellzylinder mit jeweils einem Stützrad 7 bzw. 8 verbunden ist. Die - nur schematisch veranschaulichte - technisch-konstruktive Gestaltung ist dabei dergestalt, daß mittels der Verstellzylinder 5 und 6 der vertikale Abstand zwischen den Stützrädern 7, 8 und der Achse 3 der Walzenbürste 1 veränderbar ist. Dergleichen Konstruktionen sind hinlänglich bekannt, so daß auf eine nähere Erläuterung verzichtet werden kann.The sweeping unit illustrated in the drawing includes a roller brush 1, which is within a support frame 2 its axis 3 rotatably and by a hydraulic motor 4 is driven. The support frame 2 in turn comprises two hydraulic elements forming the adjusting elements V. Adjustment cylinders 5 and 6, the piston rod each of the two hydraulic adjustment cylinders with each a support wheel 7 or 8 is connected. The - only schematically illustrated - technical-constructive Design is such that by means of Adjustment cylinders 5 and 6 the vertical distance between the support wheels 7, 8 and the axis 3 of the roller brush 1 is changeable. Such constructions are adequate known, so that for a more detailed explanation can be dispensed with.

Das Kehraggregat selbst ist mittels einer - nicht dargestellten - Traganordnung an einem Trägerfahrzeug aufgehängt. Die Traganordnung gestattet dabei das Anheben des Kehraggregats in eine Transportstellung und Absenken des Kehraggregats in eine Arbeitsstellung, in der die Stützräder 7 und 8 auf der zu reinigenden Oberfläche abrollen. Auch dies zählt zum Stand der Technik und bedarf daher an dieser Stelle keiner Erläuterung.The sweeping unit itself is by means of a - not shown - support arrangement on a carrier vehicle suspended. The carrying arrangement allows lifting the sweeping unit in a transport position and lowering the sweeping unit in a working position in which the Jockey wheels 7 and 8 on the surface to be cleaned roll. This is also part of the state of the art and therefore requires no explanation at this point.

Die Funktion des Kehraggregates wird durch ein Steuergerät 9 gesteuert. Dieses steht über eine Steuerleitung 10 mit dem Bedienpunkt 11 in Verbindung. Wird über einen entsprechenden Schalter 12 am Bedienpunkt 11 das Kehraggregat in Betrieb genommen, so laufen innerhalb der von dem Steuergerät 9 gesteuerten Hydraulik die folgenden Schritte ab:The function of the sweeping unit is controlled by a control unit 9 controlled. This is via a control line 10 in connection with the operating point 11. Will over one corresponding switch 12 at operating point 11 Sweeping unit put into operation, so run within the hydraulics controlled by the controller 9 the following Steps from:

Die Ventile 13 und 14 werden aus ihrer Sperrstellung in ihre Durchflußstellung geschaltet, das Steuerventil 15 wird aus seiner Sperrstellung in seine Überkreuzstellung geschaltet, in der es die Anschlüsse P und B einerseits und A und T andererseits miteinander verbindet, und die Pumpe 16 wird in Betrieb genommen. Auf diese Weise werden die hydraulischen Arbeitsräume 17, 18 der Verstellzylinder 5 und 6 mit Hydraulikflüssigkeit gefüllt, und die Kolbenstangen der Verstellzylinder werden unter Verdrängung der in den hydraulischen Arbeitsräumen 19 und 20 vorhandenen Hydraulikflüssigkeit über das Ventil 14 und das Gegendruckventil 21 in den Sumpf 22 in ihre maximale Stellung ausgefahren. Zugleich wird der hydraulische Arbeitsraum 23 des Speisezylinders 24 gefüllt, wodurch der Kolben des Speisezylinders unter Verdrängung der in dem hydraulischen Arbeitsraum 25 vorhandenen Hydraulikflüssigkeit über das Steuerventil 15 in den Sumpf 22 in seine linke Endstellung gebracht wird. Anschließend werden die Ventile 13 und 14 in ihre Sperrstellung gebracht, und das Kehraggregat wird mittels der - nicht dargestellten - Tragvorrichtung so weit abgesenkt, bis die Stützräder 7 und 8 auf der zu reinigenden Oberfläche aufstehen. Die Tragvorrichtung wird anschließend in ihre Schwimmstellung geschaltet, damit das Kehraggregat Bodenunebenheiten folgen kann.The valves 13 and 14 are in from their locked position their flow position switched, the control valve 15 will move from its locked position to its crossover position switched in which there are connections P and B on the one hand and A and T on the other hand connects, and the Pump 16 is started up. That way the hydraulic working spaces 17, 18 of the adjusting cylinders 5 and 6 filled with hydraulic fluid, and the Piston rods of the adjustment cylinders are under Displacement in the hydraulic work rooms 19 and 20 existing hydraulic fluid via the valve 14 and the back pressure valve 21 in the sump 22 in their maximum position extended. At the same time, the hydraulic Working space 23 of the feed cylinder 24 filled, whereby the piston of the feed cylinder is displaced existing in the hydraulic working space 25 Hydraulic fluid via the control valve 15 in the Swamp 22 is brought into its left end position. Then the valves 13 and 14 in their Bring locked position, and the sweeping unit is by means of the - not shown - carrying device so far lowered until the support wheels 7 and 8 on the cleaning surface. The carrying device is then switched to its floating position, so that the sweeping unit can follow uneven floors.

Nun wird die den Hydraulikmotor 4 antreibende Hydraulikpumpe 26 eingeschaltet, so daß die Walzenbürste 1 in Drehung versetzt wird.Now the hydraulic pump driving the hydraulic motor 4 26 turned on so that the roller brush 1 in Rotation is offset.

Des weiteren werden die Ventile 27 und 28 in ihre Durchflußstellung geschaltet. Auf diese Weise gelangt Hydraulikflüssigkeit über die Pumpe 16 und das nach wie vor in Überkreuzstellung geschaltete Steuerventil 15 in die hydraulischen Arbeitsräume 19 und 20 der Verstellzylinder 5 und 6. Deren Kolbenstangen fahren langsam ein, wobei die in den hydraulischen Arbeitsräumen 17 und 18 vorhandene Hydraulikflüssigkeit über das (geöffenete) Ventil 28 und das Gegendruckventil 21 in den Sumpf 22 verdrängt wird. Dies führt zu einem allmählichen Absenken der Kehrwalze 1 in Richtung auf die zu reinigende Oberfläche.Furthermore, the valves 27 and 28 in their Flow position switched. This way Hydraulic fluid via the pump 16 and the as before control valve switched in crossover position 15 in the hydraulic working spaces 19 and 20 of the adjusting cylinders 5 and 6. Their piston rods slowly retract, the hydraulic working rooms 17 and 18 existing hydraulic fluid via the (open) Valve 28 and the back pressure valve 21 in the sump 22nd is ousted. This leads to a gradual lowering the brush roller 1 in the direction of the to be cleaned Surface.

Sobald die Walzenbürste 1 im Rahmen dieser Absenkbewegung die zu reinigende Oberfläche berührt und auf diese Weise über das Leerlauf-Bremsmoment hinaus gebremst wird, steigt der Druck in der die Hydraulikpumpe 26 und den Hydraulikmotor 4 miteinander verbindenden Druckleitung 29 sprunghaft an. Dieser Druckanstieg wird von dem Sensor S in Form eines Druckfühlers 30 registriert, der ein entsprechendes Signal auf das Steuergerät 9 schaltet. Das Steuergerät schaltet daraufhin das Steuerventil 15 aus seiner Überkreuzstellung in seine Parallel-Durchgangsstellung, in der es die Anschlüsse A und P einerseits und B und T andererseits miteinander verbindet. Hierdurch wird der hydraulische Arbeitsraum 25 des Speisezylinders 24 beaufschlagt, und die in dem hydraulischen Arbeitsraum 23 vorhandene Hydraulikflüssigkeit wird über das (geöffnete) Ventil 27 in die hydraulischen Arbeitsräume 19 und 20 der Verstellzylinder 5 und 6 verdrängt. Das vorgegebene Volumen des hydraulischen Arbeitsraums 23 des Speisezylinders 24 führt zu einer exakt definierten Verkürzung der Verstellzylinder 5 und 6 und somit zu einem exakt definierten Absenken der Walzenbürste 1.As soon as the roller brush 1 as part of this lowering movement touches the surface to be cleaned and in this way is braked beyond the idling braking torque, increases the pressure in the hydraulic pump 26 and Hydraulic motor 4 connecting pressure line 29 leaps and bounds. This increase in pressure is detected by sensor S registered in the form of a pressure sensor 30, the one corresponding signal on the control unit 9 switches. The The control device then switches off the control valve 15 its crossover position in its parallel passage position, in which there are connections A and P on the one hand and B and T on the other hand connects. hereby becomes the hydraulic working space 25 of the feed cylinder 24 acted upon, and that in the hydraulic work space 23 existing hydraulic fluid is over the (Open) valve 27 in the hydraulic work rooms 19 and 20 of the adjusting cylinders 5 and 6 displaced. The predetermined volume of the hydraulic working space 23 of the Feed cylinder 24 leads to a precisely defined one Shortening the adjusting cylinders 5 and 6 and thus too a precisely defined lowering of the roller brush 1.

Ist die optimale Kehrspiegelbreite noch nicht erreicht, werden die beiden Ventile 27 und 28 geschlossen und das Steuerventil 15 in seine Überkreuzstellung gebracht. Hierdurch wird der hydraulische Arbeitsraum 23 des Speisezylinders 24 erneut mit Hydraulikflüssigkeit gefüllt und der oben beschriebene Vorgang - Öffnen der Ventile 27 und 28 sowie Umstellen des Steuerventils 15 in seine Parallel-Durchgangsstellung - kann wiederholt werden.If the optimal sweeping mirror width has not yet been reached, the two valves 27 and 28 are closed and that Control valve 15 brought into its crossover position. As a result, the hydraulic working space 23 of the Feed cylinder 24 again with hydraulic fluid filled and the process described above - opening the Valves 27 and 28 and changeover of the control valve 15 in its parallel through position - can be repeated become.

Die Anzahl der Hübe des Speisezylinders 24, die dazu erforderlich sind, die Walzenbürste 1 aus ihrer Bodenkontaktstellung in ihre Arbeitsstellung zu bringen, richten sich insbesondere nach dem hydraulischen Untersetzungsverhältnis zwischen dem Speisezylinder 24 und den Verstellzylindern 5 und 6. Je größer das Untersetzungsverhältnis ist, desto exakter läßt sich die Position der Walzenbürste 1 relativ zur zu reinigenden Oberfläche einstellen. Die Kolbenstange des Speisezylinders 24 wirkt auf eine Zähleinrichtung Z in Form eines Impulszählers 31, der mit dem Steuergerät 9 in Verbindung steht. Entspricht die von dem Impulszähler 31 ermittelte Anzahl von Hüben dem von dem Steuergerät 9 vorgegebenen Wert, werden sämtliche Ventile 13, 14, 27 und 28 sowie das Steuerventil 15 geschlossen und die Hydraulikpumpe 16 abgeschaltet. The number of strokes of the feed cylinder 24 that do so are required, the roller brush 1 from its ground contact position to bring them into their working position depend in particular on the hydraulic reduction ratio between the feed cylinder 24 and the Adjusting cylinders 5 and 6. The larger the reduction ratio the more exact the position of the Roller brush 1 relative to the surface to be cleaned to adjust. The piston rod of the feed cylinder 24 acts on a counter Z in the form of a pulse counter 31, which is connected to the control unit 9. Corresponds to the number determined by the pulse counter 31 of strokes the value specified by the control unit 9, are all valves 13, 14, 27 and 28 and the Control valve 15 closed and the hydraulic pump 16 off.

Am Ende des Kehreinsatzes wird über einen entsprechenden Schalter am Bedienpult 11 die Hydraulikpumpe 26 abgeschaltet und das Kehraggregat über die - nicht dargestellte - Traganordnung angehoben. Das oben erläuterte Ausfahren der Kolben der Verstellzylinder 5 und 6 durch Beaufschlagen von deren hydraulischen Arbeitsräumen 17 und 18 kann sich anschließen. Dieser Schritt kann dann zu Beginn des Kehreinsatzes wegfallen.At the end of the sweeping operation, a corresponding Switch on control panel 11, hydraulic pump 26 switched off and the sweeping unit on the - not shown - Support arrangement raised. The above explained Extend the pistons of the adjusting cylinders 5 and 6 Acting on their hydraulic working spaces 17 and 18 can join. This step can then too Eliminate the beginning of the sweeping operation.

Der vorstehend beschriebene Vorgang (Feinverstellung-Senkvorgang) ist umkehrbar, wenn Ventile 13 und 14 statt 27 und 28 angesteuert werden. Auf diese Weise ergibt sich ein Feinverstellung-Hebevorgang. Damit können äußere Störeinflüsse, die sich nicht zu schnell ändern, einfach kompensiert werden. Beispielsweise beeinflußt der Pflug mit seinem Gewicht sehr stark die Geometrie des Fahrzeugrahmens bezogen auf die Fahrbahn und entsprechend den Kehrspiegel.The process described above (fine adjustment lowering process) is reversible when valves 13 and 14 take place 27 and 28 can be controlled. This way a fine adjustment lifting process. This allows external Interference that does not change too quickly is simple be compensated. For example, the plow affects with its weight, the geometry of the vehicle frame is very strong related to the road surface and corresponding to the Sweeping level.

Claims (6)

  1. Sweeper unit for attachment to a carrier vehicle or a trailer, comprising a supporting frame (2) and at least one motor-driven rotary brush (1) therein, pivoting about its longitudinal axis (3), where the supporting frame (2) displays pick-up wheels (7, 8), whose vertical distance from the axis (3) of the rotary brush (1) can be altered by an adjustment unit, which comprises at least one hydraulic adjustment cylinder (5, 6) and a control device (9),
    characterised in that
    a feed cylinder (24) is hydraulically connected with the at least one adjustment cylinder (5, 6), the piston of said feed cylinder or other signal transmitter is connected with a counter and/or distance measuring device (Z) whose signal is sent to the control device (9), or with a mechanical adjustment drive and whose hydraulic working area (23) communicating with the at least one adjustment cylinder displays a smaller cross-sectional area than the at least one adjustment cylinder (5, 6).
  2. Sweeper unit according to claim 1,
    characterised in that
    the feed cylinder (24) is connected between a hydraulic pump (16) and the at least one adjustment cylinder (5, 6).
  3. Sweeper unit according to claim 1 or claim 2,
    characterised in that
    between hydraulic pump (16) and feed cylinder (24) there is a reversing valve (15) which enables direct pressurisation of the at least one adjustment cylinder (5, 6), bypassing the feed cylinder (24).
  4. Sweeper unit according to one of claims 1 to 3,
    characterised in that
    there is a sensor (S) which detects the driving torque of the driving power of the rotary brush (1) or a factor in connection herewith and the signal from said sensor is sent to the control device (9), whereupon the control device (9) determines the working position of the adjustment organ (V) corresponding to the optimal working width as a function of the ground contact position of the adjustment organ (V) when the rotary brush is lowered, characterised by a discrete increase in the sensor signal.
  5. Sweeper unit according to claim 4,
    characterised in that
    a set-up of measuring instruments is provided so as to determine the diameter of the rotary brush (1), and the diameter signal is sent to the control device (9).
  6. Sweeper unit according to claim 5,
    characterised in that
    in the control device (9), an operation characteristic is stored for the advance of the at least one hydraulic adjustment cylinder (5, 6), which is a function of the actual diameter of the rotary brush (1), from its ground contact position into its working position.
EP00943809A 1999-06-17 2000-06-15 Sweeping unit Expired - Lifetime EP1108092B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19927593 1999-06-17
DE19927593A DE19927593C1 (en) 1999-06-17 1999-06-17 Sweeping unit
PCT/EP2000/005487 WO2000079059A1 (en) 1999-06-17 2000-06-15 Sweeping unit

Publications (2)

Publication Number Publication Date
EP1108092A1 EP1108092A1 (en) 2001-06-20
EP1108092B1 true EP1108092B1 (en) 2004-04-21

Family

ID=7911512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00943809A Expired - Lifetime EP1108092B1 (en) 1999-06-17 2000-06-15 Sweeping unit

Country Status (9)

Country Link
US (1) US6681433B1 (en)
EP (1) EP1108092B1 (en)
AT (1) ATE264947T1 (en)
CA (1) CA2341030A1 (en)
DE (2) DE19927593C1 (en)
NO (1) NO332295B1 (en)
PL (1) PL346044A1 (en)
RU (1) RU2250293C2 (en)
WO (1) WO2000079059A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7028925B2 (en) 2003-05-14 2006-04-18 Castle Rock Industries, Inc. Spray gun for use with an all surface cleaning apparatus
USD654234S1 (en) 2010-12-08 2012-02-14 Karcher North America, Inc. Vacuum bag
US8245345B2 (en) 2003-05-14 2012-08-21 Karcher North America, Inc. Floor treatment apparatus
US8302240B2 (en) 2009-07-29 2012-11-06 Karcher North America, Inc. Selectively adjustable steering mechanism for use on a floor cleaning machine
USD693529S1 (en) 2012-09-10 2013-11-12 Karcher North America, Inc. Floor cleaning device
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7120961B2 (en) * 2002-09-06 2006-10-17 Tennant Company Brush wear adjustment system and method
DE102007023578A1 (en) * 2007-05-21 2008-11-27 Fraport Ag Frankfurt Airport Services Worldwide sweeper
US9493921B2 (en) 2013-03-15 2016-11-15 Oshkosh Corporation Snow removal truck broom systems and methods
US20210108384A1 (en) * 2014-09-29 2021-04-15 Keith E . Smith Floating brush sweeper
RU190156U1 (en) * 2018-12-17 2019-06-21 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный автомобильно-дорожный университет (СибАДИ)" Utility car
USD907868S1 (en) 2019-01-24 2021-01-12 Karcher North America, Inc. Floor cleaner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455200A1 (en) * 1974-11-21 1976-05-26 Kibo Kommunalmasch Gmbh & Co Regulator control for rotary brush of street cleaning device - has hydraulic jack to counterbalance weight of rotary cleaning brush
DE2821627A1 (en) * 1978-05-18 1979-11-22 Siegfried Kugelmann Road sweeper brush height control - with adjustment from hydraulic cylinder using fluid tapped from brush drive motor feed line
US4525888A (en) * 1983-09-09 1985-07-02 Fmc Corporation Maintaining constant pick-up broom pattern
EP0189371B1 (en) * 1985-01-23 1989-05-31 Reberle reg. Treuunternehmen Schaan Snow-clearing apparatus
FI74504C (en) * 1986-12-01 1988-02-08 Rahtikone Oy RENGOERINGSANORDNING FOER VAEG, FLYGFAELT EL.DYL. Underlag.
DE58908709D1 (en) * 1988-12-07 1995-01-12 Schoerling Waggonbau Method and device for setting a preselected sweeping mirror width of a roller broom.
US5295277A (en) * 1992-12-14 1994-03-22 Tennant Company Convertible sweeper
US5369832A (en) 1993-08-09 1994-12-06 Hagger; Anthony R. Bucket mounted sweeper
US5426805A (en) 1993-08-24 1995-06-27 Waldon, Inc. Walk-behind self-propelled broom sweeper
EP0843047B1 (en) * 1996-11-18 2000-03-15 Schmidt Holding Europe GmbH Sweeping unit especially for mounting on a vehicule or a trailer

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9015887B1 (en) 2003-05-14 2015-04-28 Kärcher North America, Inc. Floor treatment apparatus
US9510721B2 (en) 2003-05-14 2016-12-06 Karcher North America, Inc. Floor cleaning apparatus
US8245345B2 (en) 2003-05-14 2012-08-21 Karcher North America, Inc. Floor treatment apparatus
US7028925B2 (en) 2003-05-14 2006-04-18 Castle Rock Industries, Inc. Spray gun for use with an all surface cleaning apparatus
US8438685B2 (en) 2003-05-14 2013-05-14 Karcher North America, Inc. Floor treatment apparatus
US8528142B1 (en) 2003-05-14 2013-09-10 Karcher North America, Inc. Floor treatment apparatus
US9451861B2 (en) 2003-05-14 2016-09-27 Kärcher North America, Inc. Floor treatment apparatus
US8887340B2 (en) 2003-05-14 2014-11-18 Kärcher North America, Inc. Floor cleaning apparatus
US9192276B2 (en) 2003-05-14 2015-11-24 Karcher North America, Inc. Floor cleaning apparatus
US8302240B2 (en) 2009-07-29 2012-11-06 Karcher North America, Inc. Selectively adjustable steering mechanism for use on a floor cleaning machine
USD654234S1 (en) 2010-12-08 2012-02-14 Karcher North America, Inc. Vacuum bag
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system
USD693529S1 (en) 2012-09-10 2013-11-12 Karcher North America, Inc. Floor cleaning device

Also Published As

Publication number Publication date
NO20010750L (en) 2001-04-11
US6681433B1 (en) 2004-01-27
NO332295B1 (en) 2012-08-20
PL346044A1 (en) 2002-01-14
NO20010750D0 (en) 2001-02-14
WO2000079059A1 (en) 2000-12-28
DE50006141D1 (en) 2004-05-27
CA2341030A1 (en) 2000-12-28
ATE264947T1 (en) 2004-05-15
EP1108092A1 (en) 2001-06-20
RU2250293C2 (en) 2005-04-20
DE19927593C1 (en) 2001-04-19

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