EP0435978B1 - Road-sweeping lorry - Google Patents

Road-sweeping lorry Download PDF

Info

Publication number
EP0435978B1
EP0435978B1 EP90909675A EP90909675A EP0435978B1 EP 0435978 B1 EP0435978 B1 EP 0435978B1 EP 90909675 A EP90909675 A EP 90909675A EP 90909675 A EP90909675 A EP 90909675A EP 0435978 B1 EP0435978 B1 EP 0435978B1
Authority
EP
European Patent Office
Prior art keywords
vehicle according
sweeper vehicle
unit
sweeping
sweeper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90909675A
Other languages
German (de)
French (fr)
Other versions
EP0435978A1 (en
Inventor
Alfred Dipl.-Ing. Schmidt (Fh)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schmidt Alfred Dipl-Ing (fh)
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT90909675T priority Critical patent/ATE93916T1/en
Publication of EP0435978A1 publication Critical patent/EP0435978A1/en
Application granted granted Critical
Publication of EP0435978B1 publication Critical patent/EP0435978B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • E01H5/00Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/08Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by driven elements
    • E01H5/09Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by driven elements the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels
    • E01H5/092Brushing elements

Definitions

  • the present invention relates to a sweeper for sweeping traffic areas with at least one front axle and one rear axle and a rotating sweeper roller arranged between them and pivotable about a vertical axis.
  • Such a sweeper is known from DE-A-35 26 883. It has a sweeping roller arranged approximately in the center of the vehicle, which is driven in such a way that it rotates with the direction of rotation opposite to the vehicle wheels.
  • the broom is inclined with respect to the vehicle's longitudinal axis; This sweeps the sweepings to the side and ejects them under the sweeper.
  • Such sweepers are often equipped with a front-mounted snow plow and used for snow removal if a complete and residue-free removal of the snow from the traffic area (black clearance) is to be achieved.
  • black clearance is for example for the runways of. Airports required.
  • the sweeping rollers In order to enable economical snow removal in such extensive traffic areas, the sweeping rollers have a large length, which results in a correspondingly large sweeping width of the inclined sweeping roller.
  • the present invention is therefore based on the object of providing a generic sweeper in which an undisturbed discharge of the swept material to the side is possible even when using sweeping rollers of great length and when operating at high speeds, without the maneuverability of the vehicle being impaired in the process.
  • this object is achieved in that the sweeper is divided into a front unit built on the front axle and a rear unit built on the rear axle, which are connected to one another by means of a telescopically variable-length connecting unit bridging the sweeping roller, so that the wheelbase of the vehicle can be changed with it.
  • the wheelbase which is lengthened according to the invention, enables clearing with very large sweeping widths and high clearing speeds, in particular in the case of straight traffic areas such as, for example, at the runways of airfields, avoiding the disadvantages of known sweeping vehicles; With such a clearing operation, it is not a question of particularly good maneuverability of the sweeper.
  • Narrow clearing sections such as during apron clearance and turning at the ends of the runways can be cleared with a sweeper shortened according to the invention and at a relatively low clearing speed, so that the disadvantages described above are reliably avoided.
  • the minimum wheelbase can be selected even smaller than is the case with known sweeper vehicles with a fixed wheelbase, since the latter have to meet average requirements with regard to maneuverability and sweeping speed.
  • the sweeper according to the invention has a maximum shortened wheelbase for slow sweeping a higher maneuverability than known sweepers.
  • connection unit can be changed longer, ie can be lengthened and shortened, while the sweeper is traveling. In this way, the operator of the sweeper can shorten the wheelbase for turning the sweeper, for example, when the runway has reached the end, without the sweeping operation having to be interrupted. This makes the sweeping operation particularly economical.
  • the length of the connecting unit is particularly preferably changed hydraulically. The advantages of such a hydraulic control of the wheelbase are, in addition to the low maintenance requirements, the high flexibility with regard to the control and automation options as well as other advantages known for hydraulics.
  • To change the length of the connection unit at least one hydraulic telescopic cylinder assigned to it is preferably provided.
  • connection unit can also comprise additional guide parts which have suitable longitudinal guides.
  • the sweeping roller is preferably suspended on the sweeper by means of a rotary bearing so as to be pivotable about a vertical axis.
  • the side to which the dirt is ejected, as well as the ejection angle can be selected in accordance with the present conditions.
  • the angle between the sweeping roller and the longitudinal direction of the vehicle can be selected to be correspondingly acute are so that the side-facing component of the force exerted by the bristles of the sweeping roller on the sweepings is increased.
  • the sweeping roller which can be pivoted about a vertical axis is particularly preferably suspended on the connecting unit, such a suspension being particularly advantageous in which the suspension point can be displaced in the longitudinal direction of the vehicle.
  • connection unit can be extended at least to such an extent that the clear width between the front unit and the rear unit corresponds approximately to the length of the sweeping roller, which is pivoted below the outline of the vehicle and, if appropriate, aligned exactly in the longitudinal direction of the vehicle if the suspension point is centered between the Front unit and the rear unit is selected,
  • This possibility of swiveling the sweeper roller completely under the vehicle outline also allows the passage of relatively narrow garage doors, passages etc., although the sweeper vehicle has a sweeper roller, the length of which, for example, exceeds twice the vehicle width. Also because the length of the sweeper roller does not hinder the passage of narrow passages, the manageability of the sweeper vehicle according to the invention is thus improved compared to the known sweeper vehicles.
  • the connecting unit comprises a frame part rigidly connected to the rear unit and a telescopic part installed between the latter and the front unit.
  • a frame part rigidly connected to the rear unit and a telescopic part installed between the latter and the front unit.
  • Broom is suspended on the frame part after the weight of the broom with a corresponding weight distribution within the rear unit mainly acts on the rear axle.
  • axles on the front and rear units is chosen according to requirements; it is of no fundamental importance in the context of the present invention.
  • the front unit of the sweeper vehicle according to the invention preferably has at least one driven axle, a hydrostatic vehicle drive acting on the wheels of the or at least one rear axle being provided. Since only hydraulic lines, for example hoses, are required to transmit the drive power from the front unit designed as a power unit to the rear unit comprising the hydrostatic drive, the variable length of the connection between the front unit and the rear unit does not pose a problem for the power transmission, if a large variability in length, for example of several meters, is provided.
  • the hydrostatic vehicle drive also has advantages with regard to the infinitely variable variability of the drive torque and the driving speed over a wide range.
  • a hydraulic motor that is connected to the hydraulic supply provided in the drive head is also particularly preferably provided for driving the sweeping roller.
  • the coupling of the rotational speed of the sweeping roller to the driving speed of the sweeping vehicle can be achieved with particularly little effort by means of corresponding hydraulic controls.
  • the hydraulic motor can be flanged directly to the sweeping roller or, for example, arranged above it; in the latter case, a chain, a toothed belt or the like can be used to transmit the torque.
  • a separate drive unit for the sweeping roller is provided in the rear unit of the sweeper.
  • This is particularly expedient if very high drive powers are used to operate the sweeping roller are required, such as in the case of particularly large sweeping rollers and / or for sweeping particularly heavy sweepings.
  • the power can also be transferred hydraulically from the drive unit to the broom; equally, mechanical means such as shafts, chains, etc. are suitable for transmitting the drive power, particularly in the case of a suspension of the sweeping roller which cannot be displaced longitudinally.
  • the drive unit for the sweeping roller arranged in the rear unit can also be used to drive a sweeping fan arranged in the rear unit of the sweeper. Such a sweeping fan can further improve the sweeping performance of the sweeper according to the invention.
  • the sweeper is composed of the assemblies front unit 1, connecting unit 2, rear unit 3 and the sweeping device 4 arranged below the connecting unit 2.
  • the front unit 1 comprises the front horizontal frame 5, on which the cab 6 is constructed in the usual way, and the front support frame 7 arranged vertically upwards at the rear end of the front horizontal frame 5.
  • the rear unit 3 has a rear horizontal frame 8, at the front end of which the rear support frame 9 is arranged vertically upwards.
  • the sweeping fan 10 and the drive motor 11 serving to drive it are accommodated under the casing 37.
  • a blowing duct 12 points vertically downward from the sweeping fan 10, on which the blowing nozzle 13 is arranged so as to be pivotable about a vertical axis.
  • the front unit 1 and the rear unit 3 are connected to one another via the telescopically variable-length connecting unit 2.
  • the connecting unit 2 comprises two telescopic longitudinal guides, each of which is composed of an outer guide tube 14 and an inner guide tube 15.
  • the two inner guide tubes 15 are rigidly connected to the rear support frame 9, the two front guide tubes 14 to the front support frame 7.
  • the guide tubes of the two longitudinal guides each have a hydraulically actuated, double-acting telescopic cylinder 16, the front end 17 of which is articulated on the outer guide tube 14 and the rear end 18 of which is articulated on the inner guide tube 15 of each longitudinal guide.
  • the sweeping device 4 is suspended on the connecting unit 2 by means of two jacket tubes 19 which surround the outer guide tubes 14 of the longitudinal guides and are displaceable with respect to these in the vehicle longitudinal direction.
  • a hydraulically acting displacement cylinder 20, which is articulated on the one hand on the front support frame 7 and on the other hand on a web 21 connecting the two casing pipes 19, is used to move the two casing pipes 19 with respect to the outer guide pipes 14.
  • the two jacket tubes 19 are connected to one another in their rear area by a bridge 22 and in their front area by a support frame 23.
  • the sweeping device 4 comprises the sweeping roller 24, which is rotatably mounted in a sweeping roller frame 25. Via two spindles 26, two trailing support wheels 27 are attached to the sweeping roller frame 25, the height of the sweeping roller axis and thus the contact pressure of the sweeping roller 24 on the surface to be swept being adjustable during the sweeping operation via the spindles 26.
  • the sweeping roller 24 is driven by means of a hydraulic sweeping roller drive motor 28 arranged above it, the torque being transmitted from the sweeping roller drive motor 28 to the sweeping roller 24 by means of a chain and two sprockets.
  • the sweeping roller frame is connected to the horizontally arranged turntable 30 by means of four struts 29; the slewing ring 30 is arranged in the interior of a support ring 31 surrounding it.
  • a swivel motor 32 is fixedly connected to the support ring 31, which acts on the rotating ring 30 and thus serves to swivel the sweeping roller about a vertical axis.
  • the support ring 31 is connected to the support frame 23 by a spatial parallel link arrangement, the parallel link arrangement consists of two outer, lower links 33 and 34 and an upper, upper link 35 arranged above them.
  • the selected handlebar arrangement prevents rotation of the support ring 31 about its vertical axis as well as its oscillation, in particular when the sweeping device is raised.
  • a lifting cylinder 36 is used to lift the sweeping device 4 from the lower working position shown in FIGS. 1 and 2 into the upper transport position shown in FIG. 3, which is articulated on the one hand on the bridge 22 and on the other hand on the slewing ring 30.
  • FIG. 1 and 2 show the sweeper in its shortened state and with the sweeper in the working position, ie in the state in which it is when sweeping at low speed
  • Fig. 3 shows the same sweeper in an extended state, wherein at the same time the sweeping device 4 is shown in its raised position in the transport position.
  • the connecting unit 12 is extended so far that the clear width between the front unit 1 and the rear unit 3 is greater than the length of the sweeping roller 24; this is thus located in the longitudinal direction of the vehicle below the connection unit 2.
  • the displacement cylinder 20 is extended to such an extent that the suspension of the sweeping device 4, i.e. in particular, the lifting cylinder 36 is located centrally between the front support frame 7 and the rear support frame 9.
  • FIG. 3 correspond to those of FIGS. 1 and 2, so that reference is made to the above statements for the further explanation of FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

A road-sweeping lorry for sweeping road surfaces consists of a front unit (1) and a rear unit (3) interconnected by a connecting unit (2). A sweeping device (4) with a cylinder broom is arranged between the front unit and the rear unit. The length of the connecting unit (2) can be varied telescopically, and therefore the distance between the front unit (1) and the rear unit (3) can be varied.

Description

Die vorliegende Erfindung betrifft ein Kehrfahrzeug zum Kehren von Verkehrsflächen mit wenigstens einer Vorderachse und einer Hinterachse und einer zwischen diesen angeordneten, um eine vertikale Achse verschwenkbaren, rotierenden Kehrwalze.The present invention relates to a sweeper for sweeping traffic areas with at least one front axle and one rear axle and a rotating sweeper roller arranged between them and pivotable about a vertical axis.

Ein derartiges Kehrfahrzeug ist aus der DE-A-35 26 883 bekannt. Es besitzt eine etwa in Fahrzeugmitte angeordnete Kehrwalze, welche in der Weise angetrieben wird, daß sie mit zu den Fahrzeugrädern entgegengesetztem Drehsinn rotiert. Die Kehrwalze ist bzgl. der Fahrzeuglängsachse schräggestellt; dadurch wird beim Kehren das Kehrgut zur Seite befördert und seitlich unter dem Kehrfahrzeug ausgeworfen.Such a sweeper is known from DE-A-35 26 883. It has a sweeping roller arranged approximately in the center of the vehicle, which is driven in such a way that it rotates with the direction of rotation opposite to the vehicle wheels. The broom is inclined with respect to the vehicle's longitudinal axis; This sweeps the sweepings to the side and ejects them under the sweeper.

Derartige Kehrfahrzeuge werden häufig mit einem frontseitig angebauten Schneepflug ausgerüstet und zur Schneeräumung eingesetzt, wenn eine vollständige und rückstandsfreie Entfernung des Schnees von der Verkehrsfläche (Schwarzräumung) erreicht werden soll. Eine derartige Schwarzräumung ist beispielsweise für die Start- und Landebahnen von . Flughäfen erforderlich. Um bei derartig ausgedehnten Verkehrsflächen eine wirtschaftliche Schneeräumung zu ermöglichen, besitzen die Kehrwalzen eine große Länge, wodurch sich eine entsprechend große Kehrbreite der schräggestellten Kehrwalze ergibt.Such sweepers are often equipped with a front-mounted snow plow and used for snow removal if a complete and residue-free removal of the snow from the traffic area (black clearance) is to be achieved. Such black clearance is for example for the runways of. Airports required. In order to enable economical snow removal in such extensive traffic areas, the sweeping rollers have a large length, which results in a correspondingly large sweeping width of the inclined sweeping roller.

Bei derartigen Kehrfahrzeugen tritt das Problem auf, daß eine Teilmenge des von der Kehrwalze erfaßten Schnees unter die Frontpartie des Kehrfahrzeuges geschleudert wird, wodurch es in diesem Bereich zu Schneeanbackungen kommen kann bzw. der Schneeauswurf behindert wird; dieser Nachteil tritt bei höheren Arbeitsgeschwindigkeiten des Kehrfahrzeuges verstärkt auf. Andererseits hätte eine Vergrößerung des Abstandes zwischen Kehrwalze und Vorderachse des Fahrzeugs zum Erzielen eines ungehinderten Schneeauswurfs eine entsprechende Zunahme der Fahrzeuglänge zur Folge; dadurch würden Manövrierfähigkeit und Sicherheit des Kehrfahrzeugs beeinträchtigt.In such sweepers, the problem arises that a portion of the snow captured by the sweeping roller is thrown under the front of the sweeper, which can lead to snow caking in this area or the snow ejection is hindered; this disadvantage occurs more at higher working speeds of the sweeper. On the other hand, an increase in the distance between the roller brush and the front axle of the vehicle in order to achieve unobstructed snow discharge would result in a corresponding increase in the vehicle length; this would impair the maneuverability and safety of the sweeper.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, ein gattungsgemäßes Kehrfahrzeug zu schaffen, bei welchem auch bei Verwendung von Kehrwalzen großer Länge und beim Betrieb mit hohen Geschwindigkeiten ein ungestörter Auswurf des Kehrgutes zur Seite möglich ist, ohne daß dabei die Manövrierfähigkeit des Fahrzeugs verschlechtert wird.The present invention is therefore based on the object of providing a generic sweeper in which an undisturbed discharge of the swept material to the side is possible even when using sweeping rollers of great length and when operating at high speeds, without the maneuverability of the vehicle being impaired in the process.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das Kehrfahrzeug geteilt ist in eine auf der Vorderachse aufgebaute Fronteinheit und eine auf der Hinterachse aufgebaute Heckeinheit, welche mittels einer teleskopisch längenveränderbaren, die Kehrwalze überbrückenden Verbindungseinheit miteinander verbunden sind, so daß mit dieser der Radstand des Fahrzeugs veränderbar ist.According to the invention, this object is achieved in that the sweeper is divided into a front unit built on the front axle and a rear unit built on the rear axle, which are connected to one another by means of a telescopically variable-length connecting unit bridging the sweeping roller, so that the wheelbase of the vehicle can be changed with it.

Gemäß der Erfindung ist es somit für den Räumbetrieb möglich, den Abstand zwischen der Fronteinheit und der Heckeinheit und somit den Abstand zwischen der Vorderachse und der Hinterachse zu vergrößern, so daß für den von der Kehrwalze ausgeworfenen Schnee eine vergrößerte seitliche Auswurfbreite entsteht. Auch bei großer Walzenlänge kann der gesamte von der Kehrwalze erfaßte Schnee hinter den Vorderrädern vorbei zur Seite hin aus dem Fahrzeugbereich herausgeschleudert werden. Gleichzeitig wird die Gefahr, daß sich an der Unterseite der Frontpartie des Kehrfahrzeuges Schneeanbackungen bilden, praktisch vermieden.According to the invention, it is thus possible for clearing operation to increase the distance between the front unit and the rear unit and thus the distance between the front axle and the rear axle, so that an enlarged lateral discharge width is created for the snow ejected by the sweeper roller. Even with a long roller length, all of the snow caught by the sweeper roller can be flung past the front wheels to the side and out of the vehicle area. At the same time, the risk of snow caking on the underside of the front of the sweeper is practically avoided.

Der erfindungsgemäß verlängerte Radstand ermöglicht insbesondere bei gerade verlaufenden Verkehrsflächen wie z.B. bei Start- und Landebahnen von Flugplätzen ein Räumen mit sehr großen Kehrbreiten und hohen Räumgeschwindigkeiten unter Vermeidung der genannten Nachteile bekannter Kehrfahrzeuge; bei einem derartigen Räumeinsatz kommt es nicht auf eine besonders gute Manövrierfähigkeit des Kehrfahrzeuges an. Andererseits können enge Räumabschnitte wie z.B. bei der Vorfeldräumung und beim Wenden an den Enden der Start- und Landebahnen mit erfindungsgemäß verkürztem Kehrfahrzeug und bei einer relativ geringen Räumgeschwindigkeit geräumt werden, so daß die oben beschriebenen Nachteile zuverlässig vermieden werden. Bei dem erfindungsgemäßen Kehrfahrzeug kann der minimale Radstand sogar noch geringer gewählt werden, als dies bei bekannten Kehrfahrzeugen mit festem Radstand der Fall ist, da letztere in Bezug auf Manövrierfähigkeit und Kehrgeschwindigkeit mittleren Anforderungen genügen müssen. Das erfindungsgemäße Kehrfahrzeug verfügt bei maximal verkürztem Radstand für langsames Kehren über eine höhere Manövrierfähigkeit als bekannte Kehrfahrzeuge.The wheelbase, which is lengthened according to the invention, enables clearing with very large sweeping widths and high clearing speeds, in particular in the case of straight traffic areas such as, for example, at the runways of airfields, avoiding the disadvantages of known sweeping vehicles; With such a clearing operation, it is not a question of particularly good maneuverability of the sweeper. On the other hand Narrow clearing sections such as during apron clearance and turning at the ends of the runways can be cleared with a sweeper shortened according to the invention and at a relatively low clearing speed, so that the disadvantages described above are reliably avoided. In the sweeper vehicle according to the invention, the minimum wheelbase can be selected even smaller than is the case with known sweeper vehicles with a fixed wheelbase, since the latter have to meet average requirements with regard to maneuverability and sweeping speed. The sweeper according to the invention has a maximum shortened wheelbase for slow sweeping a higher maneuverability than known sweepers.

Bevorzugt ist vorgesehen, daß die Verbindungseinheit während der Fahrt des Kehrfahrzeuges längerveränderbar, d.h. verlänger- und verkürzbar ist. Auf diese Weise kann die Bedienungsperson des Kehrfahrzeuges beispielsweise beim Erreichen des Endes der Landebahn den Radstand zum Wenden des Kehrfahrzeuges verkürzen, ohne daß der Kehrbetrieb unterbrochen werden müßte. Dadurch läßt sich der Kehrbetrieb besonders ökonomisch gestalten. Besonders bevorzugt erfolgt dabei die Längenveränderung der Verbindungseinheit hydraulisch. Die Vorteile einer derartigen hydraulischen Steuerung des Radstandes sind neben dem geringen Wartungsaufwand die hohe Flexibilität hinsichtlich der Ansteuerung und Automatisierungsmöglichkeiten sowie weitere für die Hydraulik bekannte Vorzüge. Zur Längenveränderung der Verbindungseinheit ist dabei bevorzugt mindestens ein ihr zugeordneter hydraulischer Teleskopzylinder vorgesehen.It is preferably provided that the connection unit can be changed longer, ie can be lengthened and shortened, while the sweeper is traveling. In this way, the operator of the sweeper can shorten the wheelbase for turning the sweeper, for example, when the runway has reached the end, without the sweeping operation having to be interrupted. This makes the sweeping operation particularly economical. The length of the connecting unit is particularly preferably changed hydraulically. The advantages of such a hydraulic control of the wheelbase are, in addition to the low maintenance requirements, the high flexibility with regard to the control and automation options as well as other advantages known for hydraulics. To change the length of the connection unit, at least one hydraulic telescopic cylinder assigned to it is preferably provided.

Die Gewichtsverteilung der Fronteinheit und der Heckeinheit bzgl. der zugeordneten Achsen ist bevorzugt dergestalt, daß beide Einheiten sich bezüglich des Aufstandpunktes ihrer jeweiligen Räder im wesentlichen im Momentengleichgewicht befinden. In diesem Fall wird auf die Verbindungseinheit ein nur geringes Biegemoment ausgeübt, wodurch diese ausschließlich aus dem entsprechend dimensionierten hydraulischen Teleskopzylinder bestehen kann. Die Verbindungseinheit kann jedoch auch zusätzliche, geeignete Längsführungen aufweisende Führungsteile umfassen.The weight distribution of the front unit and the rear unit with respect to the assigned axles is preferably such that both units are essentially in equilibrium with respect to the point of contact of their respective wheels. In this case, only a small bending moment is exerted on the connecting unit, as a result of which it can consist exclusively of the correspondingly dimensioned hydraulic telescopic cylinder. However, the connection unit can also comprise additional guide parts which have suitable longitudinal guides.

Die Kehrwalze ist bevorzugt mittels eines Drehlagers um eine vertikale Achse verschwenkbar an dem Kehrfahrzeug aufgehängt. Auf diese Weise kann die Seite, zu der das Kehrgut ausgeworfen wird, wie auch der Auswurfwinkel den vorliegenden Bedingungen gemäß gewählt werden. Bei schwerem Kehrgut beispielsweise kann der Winkel zwischen der Kehrwalze und der Fahrzeuglängsrichtung entsprechend spitz gewählt werden, so daß die zur Seite gerichtete Komponente der von den Borsten der Kehrwalze auf das Kehrgut ausgeübten Kraft vergrößert wird. Besonders bevorzugt ist dabei die um eine vertikale Achse verschwenkbare Kehrwalze an der Verbindungseinheit aufgehängt, wobei eine solche Aufhängung besonders vorteilhaft ist, bei welcher der Aufhängepunkt in der Fahrzeuglängsrichtung verschoben werden kann. Durch die längsverschiebbare Aufhängung der Kehrwalze kann diese einerseits im Kehrbetrieb stets in der möglichst weit hinten, d.h. nahe an den Hinterrädern gelegenen Position angeordnet sein, wobei diese Position von dem gewählten Anstellwinkel der Kehrwalze zur Fahrzeuglängsrichtung abhängt; je spitzer der Anstellwinkel ist, desto weiter vorne muß die Kehrwalze aufgehängt werden, um nicht mit den Hinterrädern zu kollidieren. Indem sich bei einer in Fahrzeuglängsrichtung verschiebbaren Aufhängung der Kehrwalze diese im Kehrbetrieb stets, d.h. bei jedem Anstellwinkel in der möglichst weit hinten gelegenen Position befinden kann, ist die zwischen der Kehrwalze und der Vorderachse befindliche Auswurföffnung stets maximal, d.h. der zwischen der Fronteinheit und der Heckeinheit liegende Raum wird optimal genutzt. Andererseits kann durch die längsverschiebbare Aufhängung der Kehrwalze im Zusammenwirken mit dem weiteren bevorzugten Merkmal, daß die Verbindungseinheit mindestens so weit verlängerbar ist, daß die lichte Weite zwischen der Fronteinheit und der Heckeinheit etwa der Länge der Kehrwalze entspricht, diese unter den Fahrzeugumriß verschwenkt und gegebenenfalls genau in Fahrzeuglängsrichtung ausgerichtet werden, wenn der Aufhängepunkt mittig zwischen der Fronteinheit und der Heckeinheit gewählt wird, Diese Möglichkeit, die Kehrwalze vollständig unter den Fahrzeugumriß zu verschwenken, gestattet auch das Passieren von relativ schmalen Garagentoren, Durchfahrten etc., obwohl das Kehrfahrzeug über eine Kehrwalze verfügt, deren Länge beispielsweise die doppelte Fahrzeugbreite überschreitet. Auch dadurch, daß die Länge der Kehrwalze das Passieren von schmalen Durchfahrten nicht behindert, ist somit die Handhabbarkeit des erfindungsgemäßen Kehrfahrzeuges gegenüber den bekannten Kehrfahrzeugen verbessert.The sweeping roller is preferably suspended on the sweeper by means of a rotary bearing so as to be pivotable about a vertical axis. In this way, the side to which the dirt is ejected, as well as the ejection angle, can be selected in accordance with the present conditions. In the case of heavy sweepings, for example, the angle between the sweeping roller and the longitudinal direction of the vehicle can be selected to be correspondingly acute are so that the side-facing component of the force exerted by the bristles of the sweeping roller on the sweepings is increased. The sweeping roller which can be pivoted about a vertical axis is particularly preferably suspended on the connecting unit, such a suspension being particularly advantageous in which the suspension point can be displaced in the longitudinal direction of the vehicle. Due to the longitudinally displaceable suspension of the sweeping roller, on the one hand, in sweeping operation, this can always be arranged in the position as far back as possible, ie close to the rear wheels, this position depending on the selected angle of attack of the sweeping roller in relation to the longitudinal direction of the vehicle; the more acute the angle of attack, the further forward the sweeper roller must be suspended so that it does not collide with the rear wheels. Since the sweeping roller of the sweeping roller, which can be moved in the longitudinal direction of the vehicle, can always be in the position as far back as possible in the sweeping mode, i.e. at every angle of attack, the ejection opening between the sweeping roller and the front axle is always maximum, i.e. that between the front unit and the rear unit lying space is optimally used. On the other hand, the longitudinally movable suspension of the broom roller in cooperation with the further preferred feature that the connection unit can be extended at least to such an extent that the clear width between the front unit and the rear unit corresponds approximately to the length of the sweeping roller, which is pivoted below the outline of the vehicle and, if appropriate, aligned exactly in the longitudinal direction of the vehicle if the suspension point is centered between the Front unit and the rear unit is selected, This possibility of swiveling the sweeper roller completely under the vehicle outline also allows the passage of relatively narrow garage doors, passages etc., although the sweeper vehicle has a sweeper roller, the length of which, for example, exceeds twice the vehicle width. Also because the length of the sweeper roller does not hinder the passage of narrow passages, the manageability of the sweeper vehicle according to the invention is thus improved compared to the known sweeper vehicles.

Bei einer bevorzugten Ausführungsform ist vorgesehen, daß die Verbindungseinheit ein mit der Heckeinheit starr verbundenes Rahmenteil und ein zwischen diesem und der Fronteinheit eingebautes Teleskopteil umfaßt. Eine derartige Ausgestaltung ist besonders vorteilhaft in Verbindung mit den weiteren Merkmalen, daß die Kehrwalze am Rahmenteil aufgehängt ist, nachdem auf diese Weise das Gewicht der Kehrwalze bei einer entsprechenden Gewichtsverteilung innerhalb der Heckeinheit überwiegend auf die Hinterachse wirkt.In a preferred embodiment it is provided that the connecting unit comprises a frame part rigidly connected to the rear unit and a telescopic part installed between the latter and the front unit. Such an embodiment is particularly advantageous in connection with the further features that Broom is suspended on the frame part after the weight of the broom with a corresponding weight distribution within the rear unit mainly acts on the rear axle.

Die Zahl der Achsen an der Front- und an der Heckeinheit wird entsprechend dem Bedarf gewählt; sie ist im Rahmen der vorliegenden Erfindung ohne grundsätzliche Bedeutung.The number of axles on the front and rear units is chosen according to requirements; it is of no fundamental importance in the context of the present invention.

Bevorzugt besitzt die Fronteinheit des erfindungsgemäßen Kehrfahrzeuges mindestens eine angetriebene Achse, wobei ein auf die Räder der bzw. mindestens einer Hinterachse wirkender hydrostatischer Fahrzeug-Antrieb vorgesehen ist. Indem zur Übertragung der Antriebsleistung von der als Triebkopf ausgebildeten Fronteinheit auf die den hydrostatischen Antrieb umfassende Heckeinheit lediglich Hydraulikleitungen, z.B. Schläuche erforderlich sind, stellt die Längenveränderlichkeit der Verbindung zwischen der Fronteinheit und der Heckeinheit auch dann kein Problem für die Leistungsübertragung dar, wenn eine große Längenveränderbarkeit beispielsweise von mehreren Metern vorgesehen wird. Der hydrostatische Fahrzeugantrieb besitzt ferner Vorzüge hinsichtlich der stufenlosen Veränderbarkeit des Antriebs-Dreh-moments und der Fahrgeschwindigkeit in einem weiten Bereich. Besonders bevorzugt ist in diesem Fall auch zum Antrieb der Kehrwalze ein Hydraulikmotor vorgesehen, der an die im Triebkopf vorgesehene Hydraulikversorgung angeschlossen ist. Dabei ist über entsprechende hydraulische Steuerungen die Koppelung der Drehgeschwindigkeit der Kehrwalze an die Fahrgeschwindigkeit des Kehrfahrzeuges mit besonders geringem Aufwand erzielbar. Der Hydraulikmotor kann direkt an die Kehrwalze angeflanscht oder beispielsweise oberhalb dieser angeordnet sein; im letzteren Fall kann zur Übertragung des Drehmoments beispielsweise eine Kette, ein Zahnriemen oder dergleichen dienen. Es ist jedoch auch die Übertragung der Antriebsleistung von einem in der Heckeinheit angeordneten Hydraulikmotor auf die Kehrwalze durch mechanische Übertragungsglieder möglich.The front unit of the sweeper vehicle according to the invention preferably has at least one driven axle, a hydrostatic vehicle drive acting on the wheels of the or at least one rear axle being provided. Since only hydraulic lines, for example hoses, are required to transmit the drive power from the front unit designed as a power unit to the rear unit comprising the hydrostatic drive, the variable length of the connection between the front unit and the rear unit does not pose a problem for the power transmission, if a large variability in length, for example of several meters, is provided. The hydrostatic vehicle drive also has advantages with regard to the infinitely variable variability of the drive torque and the driving speed over a wide range. In this case, a hydraulic motor that is connected to the hydraulic supply provided in the drive head is also particularly preferably provided for driving the sweeping roller. The coupling of the rotational speed of the sweeping roller to the driving speed of the sweeping vehicle can be achieved with particularly little effort by means of corresponding hydraulic controls. The hydraulic motor can be flanged directly to the sweeping roller or, for example, arranged above it; in the latter case, a chain, a toothed belt or the like can be used to transmit the torque. However, it is also possible to transfer the drive power from a hydraulic motor arranged in the rear unit to the broom by mechanical transmission elements.

Bei einer anderen bevorzugten Ausführungsform ist in der Heckeinheit des Kehrfahrzeuges ein gesondertes Antriebsaggregat für die Kehrwalze vorgesehen. Dies ist insbesondere dann zweckmäßig, wenn zum Betrieb der Kehrwalze sehr hohe Antriebsleistungen erforderlich sind, wie z.B. im Falle von besonders großen Kehrwalzen und/oder zum Kehren von besonders schwerem Kehrgut. Die Übertragung der Leistung von dem Antriebsaggregat auf die Kehrwalze kann auch hydraulisch erfolgen; gleichermaßen sind insbesondere bei einer nicht längsverschiebbaren Aufhängung der Kehrwalze mechanische Mittel wie Wellen, Ketten etc. zur Übertragung der Antriebsleistung geeignet. Das in der Heckeinheit angeordnete Antriebsaggregat für die Kehrwalze kann auch zum Antrieb eines in der Heckeinheit des Kehrfahrzeuges angeordneten Kehrgebläses verwendet werden. Durch ein derartiges Kehrgebläse läßt sich die Kehrleistung der erfindungsgemäßen Kehrmaschine noch weiter verbessern.In another preferred embodiment, a separate drive unit for the sweeping roller is provided in the rear unit of the sweeper. This is particularly expedient if very high drive powers are used to operate the sweeping roller are required, such as in the case of particularly large sweeping rollers and / or for sweeping particularly heavy sweepings. The power can also be transferred hydraulically from the drive unit to the broom; equally, mechanical means such as shafts, chains, etc. are suitable for transmitting the drive power, particularly in the case of a suspension of the sweeping roller which cannot be displaced longitudinally. The drive unit for the sweeping roller arranged in the rear unit can also be used to drive a sweeping fan arranged in the rear unit of the sweeper. Such a sweeping fan can further improve the sweeping performance of the sweeper according to the invention.

Weitere vorteilhafte Ausführungsformen des erfindungsgemäßen Kehrfahrzeuges ergeben sich aus den Unteransprüchen 16 bis 21.Further advantageous embodiments of the sweeper vehicle according to the invention result from subclaims 16 to 21.

Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Es zeigt

Fig. 1
die Seitenansicht eines Kehrfahrzeuges in seinem verkürzten Zustand, wobei sich die Kehreinrichtung in Arbeitsstellung befindet,
Fig. 2
eine Draufsicht auf das Kehrfahrzeug gemäß Fig. 1, wobei die Verbindungseinheit zur Sichtbarmachung der darunterliegenden Teile teilsweise Gebrochen dargestellt ist, und
Fig. 3
die Seitenansicht des Kehrfahrzeuges gemäß Fig. 1 (jedoch mit gegenüber Fig. 1 geringfügig verkleinertem Zeichnungsmaßstab) in seinem maximal verlängerten Zustand, wobei die Kehrwalze in ihre Transportstellung angehoben und in Längsrichtung unter das Fahrzeug verschwenkt ist.
It shows
Fig. 1
the side view of a sweeper in its shortened state, the sweeper is in the working position,
Fig. 2
a plan view of the sweeper according to FIG. 1, wherein the connecting unit for the visualization of the underlying parts is shown partially broken, and
Fig. 3
the side view of the sweeper vehicle according to FIG. 1 (but with a slightly reduced drawing scale compared to FIG. 1) in its maximally extended state, the sweeper roller being raised into its transport position and pivoted in the longitudinal direction under the vehicle.

Das Kehrfahrzeug setzt sich aus den Baugruppen Fronteinheit 1, Verbindungseinheit 2, Heckeinheit 3 und der unterhalb der Verbindungseinheit 2 angeordneten Kehreinrichtung 4 zusammen. Die Fronteinheit 1 umfaßt den vorderen Horizontalrahmen 5, auf dem das Führerhaus 6 in üblicher Weise aufgebaut ist, und den am hinteren Ende des vorderen Horizontalrahmens 5 angeordneten, vertikal nach oben ausgerichteten vorderen Tragrahmen 7. Die Heckeinheit 3 weist einen hinteren Horizontalrahmen 8 auf, an dessen vorderen Ende der vertikal nach oben ausgerichtete hintere Tragrahmen 9 angeordnet ist. In der Heckeinheit 3 sind unter der Verkleidung 37 das Kehrgebläse 10 sowie der zu dessen Antrieb dienende Antriebsmotor 11 untergebracht. Von dem Kehrgebläse 10 weist ein Blaskanal 12 vertikal nach unten, an welchem um eine vertikale Achse verschwenkbar die Blasdüse 13 angeordnet ist.The sweeper is composed of the assemblies front unit 1, connecting unit 2, rear unit 3 and the sweeping device 4 arranged below the connecting unit 2. The front unit 1 comprises the front horizontal frame 5, on which the cab 6 is constructed in the usual way, and the front support frame 7 arranged vertically upwards at the rear end of the front horizontal frame 5. The rear unit 3 has a rear horizontal frame 8, at the front end of which the rear support frame 9 is arranged vertically upwards. In the rear unit 3, the sweeping fan 10 and the drive motor 11 serving to drive it are accommodated under the casing 37. A blowing duct 12 points vertically downward from the sweeping fan 10, on which the blowing nozzle 13 is arranged so as to be pivotable about a vertical axis.

Die Fronteinheit 1 und die Heckeinheit 3 sind über die teleskopisch längenveränderbare Verbindungseinheit 2 miteinander verbunden. Die Verbindungseinheit 2 umfaßt dabei zwei teleskopisch längenveränderbare Längsführungen, welche sich jeweils aus einem äußeren Führungsrohr 14 und einem inneren Führungsrohr 15 zusammensetzen. Die beiden inneren Führungsrohre 15 sind mit dem hinteren Tragrahmen 9, die beiden vorderen Führungsrohre 14 mit dem vorderen Tragrahmen 7 starr verbunden. Im Inneren der Führungsrohre der beiden Längsführungen ist je ein hydraulisch betätigbarer, doppelt wirkender Teleskopzylinder 16 angeordnet, dessen vorderes Ende 17 am äußeren Führungsrohr 14 und dessen hinteres Ende 18 an dem inneren Führungsrohr 15 jeder Längsführung angelenkt ist.The front unit 1 and the rear unit 3 are connected to one another via the telescopically variable-length connecting unit 2. The connecting unit 2 comprises two telescopic longitudinal guides, each of which is composed of an outer guide tube 14 and an inner guide tube 15. The two inner guide tubes 15 are rigidly connected to the rear support frame 9, the two front guide tubes 14 to the front support frame 7. Internally The guide tubes of the two longitudinal guides each have a hydraulically actuated, double-acting telescopic cylinder 16, the front end 17 of which is articulated on the outer guide tube 14 and the rear end 18 of which is articulated on the inner guide tube 15 of each longitudinal guide.

Die Aufhängung der Kehreinrichtung 4 an der Verbindungseinheit 2 erfolgt mittels zweier Mantelrohre 19, welche die äußeren Führungsrohre 14 der Längsführungen umgeben und bezüglich diesen in Fahrzeuglängsrichtung verschiebbar sind. Zur Verschiebung der beiden Mantelrohre 19 bezüglich der äußeren Führungsrohre 14 dient ein hydraulisch wirkender Verschiebezylinder 20, welcher einerseits am vorderen Tragrahmen 7 und andererseits an einem die beiden Mantelrohre 19 verbindenden Steg 21 angelenkt ist. Die beiden Mantelrohre 19 sind in ihrem hinteren Bereich durch eine Brücke 22 und in ihrem vorderen Bereich durch einen Stützrahmen 23 miteinander verbunden.The sweeping device 4 is suspended on the connecting unit 2 by means of two jacket tubes 19 which surround the outer guide tubes 14 of the longitudinal guides and are displaceable with respect to these in the vehicle longitudinal direction. A hydraulically acting displacement cylinder 20, which is articulated on the one hand on the front support frame 7 and on the other hand on a web 21 connecting the two casing pipes 19, is used to move the two casing pipes 19 with respect to the outer guide pipes 14. The two jacket tubes 19 are connected to one another in their rear area by a bridge 22 and in their front area by a support frame 23.

Die Kehreinrichtung 4 umfaßt die Kehrwalze 24, welche in einem Kehrwalzenrahmen 25 rotierbar gelagert ist. Über jeweils eine Spindel 26 sind an dem Kehrwalzenrahmen 25 zwei nachlaufende Stützräder 27 angebracht, wobei über die Spindeln 26 die Höhe der Kehrwalzenachse und somit der Anpreßdruck der Kehrwalze 24 auf die zu kehrende Oberfläche während des Kehrbetriebes einstellbar ist. Der Antrieb der Kehrwalze 24 erfolgt mittels eines oberhalb dieser angeordneter hydraulischen Kehrwalzenantriebsmotors 28, wobei die Übertragung des Drehmoments von dem Kehrwalzenantriebsmotor 28 auf die Kehrwalze 24 mittels einer Kette und zweier Kettenräder erfolgt. Mittels vier Streben 29 ist der Kehrwalzenrahmen mit dem horizontal angeordneten Drehkranz 30 verbunden; der Drehkranz 30 ist dabei im Inneren eines ihn umgebenden Stützringes 31 angeordnet. Mit dem Stützring 31 fest verbunden ist ein Verschwenkmotor 32, welcher auf den Drehkranz 30 wirkt und somit zum Verschwenken der Kehrwalze um eine vertikale Achse dient. Der Stützring 31 ist durch eine räumliche Parallellenkeranordnung mit dem Stützrahmen 23 verbunden, wobei die Parallellenkeranordnung aus zwei äußeren, unteren Lenkern 33 und 34 und einem oberhalb dieser angeordneten oberen, inneren Lenker 35 besteht. Durch die gewählte Lenkeranordnung wird sowohl ein Verdrehen des Stützringes 31 um seine vertikale Achse als auch dessen Pendeln insbesondere bei angehobener Kehreinrichtung verhindert.The sweeping device 4 comprises the sweeping roller 24, which is rotatably mounted in a sweeping roller frame 25. Via two spindles 26, two trailing support wheels 27 are attached to the sweeping roller frame 25, the height of the sweeping roller axis and thus the contact pressure of the sweeping roller 24 on the surface to be swept being adjustable during the sweeping operation via the spindles 26. The sweeping roller 24 is driven by means of a hydraulic sweeping roller drive motor 28 arranged above it, the torque being transmitted from the sweeping roller drive motor 28 to the sweeping roller 24 by means of a chain and two sprockets. The sweeping roller frame is connected to the horizontally arranged turntable 30 by means of four struts 29; the slewing ring 30 is arranged in the interior of a support ring 31 surrounding it. A swivel motor 32 is fixedly connected to the support ring 31, which acts on the rotating ring 30 and thus serves to swivel the sweeping roller about a vertical axis. The support ring 31 is connected to the support frame 23 by a spatial parallel link arrangement, the parallel link arrangement consists of two outer, lower links 33 and 34 and an upper, upper link 35 arranged above them. The selected handlebar arrangement prevents rotation of the support ring 31 about its vertical axis as well as its oscillation, in particular when the sweeping device is raised.

Zum Anheben der Kehreinrichtung 4 aus der unteren, in Fig. 1 und Fig. 2 dargestellten Arbeitsstellung in die obere, in Fig. 3 dargestellte Transportstellung dient ein Hubzylinder 36, der einerseits an der Brücke 22 und andererseits an dem Drehkranz 30 angelenkt ist.A lifting cylinder 36 is used to lift the sweeping device 4 from the lower working position shown in FIGS. 1 and 2 into the upper transport position shown in FIG. 3, which is articulated on the one hand on the bridge 22 and on the other hand on the slewing ring 30.

Während die Fig. 1 und 2 das Kehrfahrzeug in seinem verkürzten Zustand und mit der Kehreinrichtung in Arbeitsstellung zeigen, d.h. also in dem Zustand, in welchem es sich beim Kehren mit geringer Geschwindigkeit befindet, zeigt Fig. 3 das gleiche Kehrfahrzeug in verlängertem Zustand, wobei gleichzeitig die Kehreinrichtung 4 in ihrem in die Transportstellung angehobenen Zustand dargestellt ist.1 and 2 show the sweeper in its shortened state and with the sweeper in the working position, ie in the state in which it is when sweeping at low speed, Fig. 3 shows the same sweeper in an extended state, wherein at the same time the sweeping device 4 is shown in its raised position in the transport position.

Aus Fig. 3 ist ersichtlich, daß die Verbindungseinheit 12 so weit verlängert ist, daß die lichte Weite zwischen der Fronteinheit 1 und der Heckeinheit 3 größer ist als die Länge der Kehrwalze 24; diese findet somit in Fahrzeuglängsrichtung ausgerichtet unterhalb der Verbindungseinheit 2 Platz. Dazu wird der Verschiebezylinder 20 in einem solchen Maße verlängert, daß sich die Aufhängung der Kehreinrichtung 4, d.h. insbesondere der Hubzylinder 36 mittig zwischen dem vorderen Tragrahmen 7 und dem hinteren Tragrahmen 9 befindet.From Fig. 3 it can be seen that the connecting unit 12 is extended so far that the clear width between the front unit 1 and the rear unit 3 is greater than the length of the sweeping roller 24; this is thus located in the longitudinal direction of the vehicle below the connection unit 2. For this purpose, the displacement cylinder 20 is extended to such an extent that the suspension of the sweeping device 4, i.e. in particular, the lifting cylinder 36 is located centrally between the front support frame 7 and the rear support frame 9.

Aus Fig. 3 ist unmittelbar ersichtlich, daß gegenüber dem in den Fig. 1 und 2 dargestellten Zustand des Kehrfahrzeuges die beiden Mantelrohre 19 und die mit diesen verbundenen Teile um die Strecke d nach hinten verschoben sind. Diese Strecke entspräche bei Absenken und Verschwenken der Kehreinrichtung 4 in die Arbeitsstellung der das Hochgeschwindigkeitskehren begünstigenden Vergrößerung der Auswurföffnung.From Fig. 3 it is immediately apparent that, compared to the state of the sweeper shown in Figs. 1 and 2, the two casing pipes 19 and the parts connected to them are shifted backwards by the distance d. This distance would correspond to the lowering and swiveling of the sweeping device 4 into the working position of the enlargement of the discharge opening which favors high-speed sweeping.

Die Bezugsziffern in der Fig. 3 entsprechen denjenigen der Fig. 1 und 2, so daß für die weitere Erläuterung der Fig. 3 auf die vorstehenden Ausführungen verwiesen wird.The reference numerals in FIG. 3 correspond to those of FIGS. 1 and 2, so that reference is made to the above statements for the further explanation of FIG. 3.

Claims (21)

  1. Sweeper vehicle for sweeping road surfaces with at least one front axle and one back axle and a rotating sweeping roller (24) located therebetween and able to tilt about a vertical axis, characterised in that the sweeper vehicle is divided into a front unit (1) built on the front axle and a tail unit (3) built on the back axle, which are connected to each other by means of a connecting unit (2) whereof the length can be varied telescopically and which spans the sweeping roller (24), so that the wheel base of the vehicle can be varied with the latter.
  2. Sweeper vehicle according to Claim 1, characterised in that during travel, the connecting unit (2) may be varied as regards length by means of a remote control from the driver's cab (6) of the sweeper vehicle.
  3. Sweeper vehicle according to Claim 1 or Claim 2, characterised in that the variation of length of the connecting unit (2) takes place hydraulically.
  4. Sweeper vehicle according to Claim 3, characterised in that provided for varying the length of the connecting unit is at least one hydraulic telescopic cylinder (16) associated therewith.
  5. Sweeper vehicle according to Claim 1, characterised in that the sweeping roller (24) is suspended from the sweeper vehicle by means of a rotary bearing so that it is able to tilt about a vertical axis.
  6. Sweeper vehicle according to Claim 5, characterised in that the sweeping roller (24) is suspended from the connecting unit (2).
  7. Sweeper vehicle according to Claim 6, characterised in that the sweeping roller (24) is suspended from the connecting unit (2) so that it is displaceable in the longitudinal direction of the vehicle.
  8. Sweeper vehicle according to Claim 6 or 7, characterised in that the connecting unit (2) can be extended at least so far that the inside width between the front unit and the tail unit corresponds approximately to the length of the sweeping roller (24).
  9. Sweeper vehicle according to Claim 1, characterised in that the connecting unit (2) comprises a frame part rigidly connected to the tail unit (3) and a telescopic part incorporated between the latter and the front unit.
  10. Sweeper vehicle according to Claim 9, characterised in that the sweeping roller (24) is suspended on the frame part.
  11. Sweeper vehicle according to Claim 1, characterised in that the front unit (1) is constructed as the hydraulic supply for the driving head comprising hydrostatic drives.
  12. Sweeper vehicle according to Claim 11, characterised in that a hydrostatic vehicle drive is provided acting on the wheels of at least the back axle.
  13. Sweeper vehicle according to Claim 1, characterised in that a hydraulic motor (28) is provided for driving the sweeping roller (24).
  14. Sweeper vehicle according to Claim 1, characterised in that the tail unit (3) comprises a drive unit (11) for the sweeping roller (24).
  15. Sweeper vehicle according to Claim 14, characterised in that built on the tail unit (3) is a sweeping fan (10), which is driven by the drive unit (11) for the sweeping roller or independently thereof.
  16. Sweeper vehicle according to Claim 1, characterised in that the connecting unit (2) comprises two parallel longitudinal guides.
  17. Sweeper vehicle according to Claim 16, characterised in that each longitudinal guide comprises an outer guide tube (14) and an inner guide tube (15) sliding therein.
  18. Sweeper vehicle according to Claim 17, characterised in that located inside the guide tubes (14, 15) of each longitudinal guide is a double-acting telescopic cylinder (16).
  19. Sweeper vehicle according to one of Claims 16 to 18, characterised in that the sweeping device (4) is suspended from the two longitudinal guides by means of two support members surrounding the latter at least partly.
  20. Sweeper vehicle according to Claim 19, characterised in that the support members are constructed as protecting tubes (19), which are arranged to slide on the outer guide tube (14).
  21. Sweeper vehicle according to Claim 19 or 20, characterised in that the support members are connected to each other by a bridge (22), on which a lifting cylinder (36) for lifting the sweeping device (4) is pivoted.
EP90909675A 1989-07-26 1990-06-15 Road-sweeping lorry Expired - Lifetime EP0435978B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90909675T ATE93916T1 (en) 1989-07-26 1990-06-15 SWEEPING VEHICLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3924646A DE3924646A1 (en) 1989-07-26 1989-07-26 SWEEPER
DE3924646 1989-07-26

Publications (2)

Publication Number Publication Date
EP0435978A1 EP0435978A1 (en) 1991-07-10
EP0435978B1 true EP0435978B1 (en) 1993-09-01

Family

ID=6385825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90909675A Expired - Lifetime EP0435978B1 (en) 1989-07-26 1990-06-15 Road-sweeping lorry

Country Status (3)

Country Link
EP (1) EP0435978B1 (en)
DE (2) DE3924646A1 (en)
WO (1) WO1991002121A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9108574U1 (en) * 1991-07-12 1991-09-19 Küpper-Weisser GmbH, 7715 Bräunlingen Fastening device for mid-axle units on trucks
JP4495044B2 (en) * 2005-07-29 2010-06-30 本田技研工業株式会社 snowblower
CN101280552B (en) * 2008-05-28 2010-06-02 上海上隧实业公司 Tunnel road ditch sweeping device
CN103306233B (en) * 2013-06-06 2015-05-06 长安大学 Automatic compensation control method of snow sweeper roller brush based on pressure feedback
CN104790322B (en) * 2015-04-20 2017-03-01 江苏佳鹿环卫装备有限公司 The adjustable sweeper of cleaning range
PL3284866T3 (en) 2016-08-18 2019-12-31 Marcel Boschung Ag Clearing device with a sweeping and blowing assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4669568A (en) * 1969-11-14 1971-05-20 N. Z. Arc Melding Works Limited Improvements in and relating to trailed vehicles
FI89148C (en) * 1984-04-13 1993-08-25 Rolux Oy Lifting trolley coupled to a towing device
DE3526883A1 (en) * 1985-07-26 1987-02-05 Schmidt Alfred Ing Gmbh SNOW CLEANING ROLLER
FI74504C (en) * 1986-12-01 1988-02-08 Rahtikone Oy RENGOERINGSANORDNING FOER VAEG, FLYGFAELT EL.DYL. Underlag.
CN1012831B (en) * 1987-04-23 1991-06-12 雷伯里地区企业沙恩公司 Cleaning vehicle for cleaning ground surfaces provided with rigid surface
US4750785A (en) * 1987-06-22 1988-06-14 Helton Jesse D Truss transportation trailer
US4815223A (en) * 1988-01-04 1989-03-28 West Mountain Sales, Inc. Snow grooming vehicle and attachments

Also Published As

Publication number Publication date
EP0435978A1 (en) 1991-07-10
WO1991002121A1 (en) 1991-02-21
DE59002560D1 (en) 1993-10-07
DE3924646A1 (en) 1991-01-31
DE3924646C2 (en) 1991-05-16

Similar Documents

Publication Publication Date Title
DE19631042C5 (en) Road construction machines for roadworks
DE3643080C2 (en)
EP0271645A1 (en) Snow plough
DE3912194C2 (en) vehicle
WO1990014266A1 (en) Process and device for attaching an aircraft nose landing gear to an aircraft tractor
DE102005003739B3 (en) Construction machine, as well as swivel device
WO1984002316A1 (en) Vehicle for small works
EP1466856A2 (en) Mobile crane with outrigger structure
EP1241298B1 (en) Vehicle, especially for cleaning beaches
DE19642788C1 (en) Snow plough-type attachment for motor vehicles
DE9213091U1 (en) Rotary harrow
DE2460584B2 (en) sweeper
EP0435978B1 (en) Road-sweeping lorry
DE3226273C2 (en) Snow blower
DE4405858C1 (en) Mower with wide working width
EP0482293A1 (en) Groundworking machine and undercarriage
EP0587175B1 (en) Snow-plough
EP0571794B1 (en) Agricultural working machine, especially rotating hay tedder
EP0727526B1 (en) Implement supporting device for utility motor vehicles
EP0197259B1 (en) Road sweeper with double cylindrical brushes
AT402678B (en) COMPOST TURNING MACHINE
EP0067386B1 (en) Milling device
EP1612335A2 (en) Automotive sweeping apparatus
EP0503395A1 (en) Mowing machine
DE9417893U1 (en) mower

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE LI

17P Request for examination filed

Effective date: 19910821

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHMIDT, ALFRED, DIPL.-ING. (FH)

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHMIDT, ALFRED, DIPL.-ING. (FH)

17Q First examination report despatched

Effective date: 19921117

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE LI

REF Corresponds to:

Ref document number: 93916

Country of ref document: AT

Date of ref document: 19930915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59002560

Country of ref document: DE

Date of ref document: 19931007

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19960621

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960625

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19970615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970825

Year of fee payment: 8

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990401