EP1294991A1 - Construction machine for machining floor surfaces - Google Patents

Construction machine for machining floor surfaces

Info

Publication number
EP1294991A1
EP1294991A1 EP01929639A EP01929639A EP1294991A1 EP 1294991 A1 EP1294991 A1 EP 1294991A1 EP 01929639 A EP01929639 A EP 01929639A EP 01929639 A EP01929639 A EP 01929639A EP 1294991 A1 EP1294991 A1 EP 1294991A1
Authority
EP
European Patent Office
Prior art keywords
drive
auxiliary drive
construction machine
machine according
coupled
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.)
Granted
Application number
EP01929639A
Other languages
German (de)
French (fr)
Other versions
EP1294991B1 (en
EP1294991B2 (en
Inventor
Peter Busley
Olaf Gaertner
Dieter Simons
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.)
Wirtgen GmbH
Original Assignee
Wirtgen GmbH
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
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Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP1294991A1 publication Critical patent/EP1294991A1/en
Publication of EP1294991B1 publication Critical patent/EP1294991B1/en
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Publication of EP1294991B2 publication Critical patent/EP1294991B2/en
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Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • E01C23/122—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
    • E01C23/127—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a construction machine for processing floor surfaces according to the preamble of claim 1.
  • Construction machines of this type for example large milling machines or cold milling machines, have a machine frame in which a milling drum running transversely to the lane to be machined is rotatably mounted.
  • the machine frame also adopts the milling drum drive and is height-adjustable by a plurality of carriages, preferably arranged in front of and behind the milling drum.
  • milling machines or recyclers of this type are used for milling off road surfaces, for example on motorways or country roads.
  • the milling drums are equipped with ⁇ interchangeable tools on their outer surface. At extreme hard road surfaces, it can happen that the tools only have a service life of half an hour and then all tools of the milling drum have to be replaced.
  • the undercarriage or the milling drum can be raised until the milling drum is no longer in contact with the ground surface.
  • An operator can replace the tools after folding away a housing part of the roller housing.
  • the milling drum must be rotated from time to time to replace all tools. This can be done by hand, but this requires very high forces.
  • the object of the invention is to improve a construction machine of the type mentioned at the outset in such a way that the tools can be replaced with a reduced need for personnel and time and with a reduced risk of accidents.
  • the invention advantageously provides that an auxiliary drive can be coupled to the drive train, which rotates the work roll by a predetermined or selectable angle of rotation in the raised state, the torque of the auxiliary drive being greater than the moment of inertia of the work roll when the drive motor is switched off or decoupled part of the drive train moving with the work roll.
  • the auxiliary drive rotates the work roll by a small angle of rotation each time it is actuated in order to bring tools that have not yet been replaced into a more favorable mounting position.
  • the torque of the auxiliary drive is slightly higher than the moment of inertia of the work roll and the drivetrain that moves with it, on the one hand to enable a rotary movement and on the other hand to keep the risk of accidents as low as possible.
  • the drive motor for the work roll is out of operation or decoupled.
  • the invention advantageously enables the time required for the tool change to be reduced, since the auxiliary drive can be actuated by the operator on the work roll. Since the auxiliary drive drives the work roll with a low output, the risk of an accident, which arises from the fact that the operator's clothing parts can get caught in the tools of the work roll when it is rotated, is virtually eliminated. Since the torque of the auxiliary drive is just sufficient to enable the work roll to rotate at approx. 3 rpm, the motor of the auxiliary drive can be stopped quickly when higher forces occur on the work roll. The auxiliary drive also stops automatically after every 4 seconds.
  • the transmission arranged between the working motor and the work roll consists of a belt transmission with at least two belt pulleys and at least one drive belt and that the auxiliary drive can be coupled to the belt transmission.
  • the auxiliary drive can advantageously be coupled in such a way that no increase in the width of the construction machine is required.
  • the auxiliary drive can namely be housed within the belt drive housing, whereby the construction machine is not widened. It can be provided that the engine-side pulley of the belt transmission can be decoupled from the drive motor via a clutch. In this way, the flow of power between the drive motor and work roll can be reliably interrupted.
  • the auxiliary drive can be coupled to the belt transmission via a friction roller.
  • the friction roller can be coupled to the roller-side pulley.
  • the use of a friction roller also has the advantage that the transferable torque is limited. If the section modulus is too high, e.g. If the work roll is blocked, the friction roller can slip, which considerably reduces the risk of accidents, since high forces cannot occur when the work roll is rotated. This is important, for example, if an operator's clothes get caught on the tools of the work roll while the work roll is rotating.
  • the auxiliary drive can be coupled to the at least one drive belt.
  • the auxiliary drive is coupled to the belt transmission via a gearwheel.
  • at least one drive belt of the belt transmission can consist of a toothed belt which is in engagement with the toothed wheel of the auxiliary drive.
  • roller-side pulley can have a gearwheel which engages with the gearwheel of the auxiliary drive.
  • the belt transmission preferably has a tension pulley which, in the tensioned state of the at least one drive belt, the roller-side pulley with the motor-side pulley couples and decouples the pulleys in the released state.
  • the auxiliary drive can also, if the engine-side pulley is decoupled via a 'coupling to be coupled to a tensioning roller of the belt transmission.
  • the tension roller can act as a friction roller of the auxiliary drive on the drive belt, or the friction roller is pressed against the tension roller to drive it.
  • a movable auxiliary drive can be coupled coaxially to the belt-side pulley to the belt drive housing fixedly attached to the machine frame and a drive axis of the auxiliary drive through a recess in the belt drive housing.
  • the belt pulley and the auxiliary drive and the respective housing parts have coupling elements which are matched to one another.
  • the auxiliary drive can be coupled to the output side of the clutch, which decouples the motor-side pulley from the drive motor.
  • the auxiliary drive preferably contains an electrically operated motor.
  • Such an engine can be supplied with power by a battery of an alternator or an additional unit and can be permanently coupled to the drive train when the power is not applied in idle mode.
  • hydraulically or pneumatically operated motors can be used for the auxiliary drive, which also enable an idle operation with a control circuit.
  • the auxiliary drive has a time control, the auxiliary drive being able to be started via a remote control and the time control determining the duty cycle of the motor. Every time the Auxiliary drive, the work roll is then rotated by a fixed, but variably adjustable angle of rotation.
  • the motor of the auxiliary drive can preferably only be switched on when the drive motor for the work roll is switched off.
  • Fig. 1 is a large milling machine with belt drive for the work roll
  • Fig. 2 shows the drive train for the work roll
  • Fig. 3 shows a cross section through the work roll
  • Fig. 4 shows a first embodiment of an auxiliary drive
  • Fig. 5 shows the embodiment of Fig. 4 in decoupled
  • Fig. 6 shows a second embodiment
  • Fig. 7 shows a third embodiment.
  • the construction machine 1 shown in FIG. 1 is a large milling machine with a machine frame 4 carried by vehicles 5 of a height-adjustable undercarriage 2.
  • the machine frame 4 has a work roller 8 arranged between the vehicles 5 and mounted on the machine frame 4 with tools 14 consisting of milling cutters to process a road surface.
  • the interchangeable tools 14 are arranged on the outer surface 12 of the work roll 8 in a predetermined pattern.
  • a drive train 18 drives the work roll 8.
  • the drive train 18 includes at least one drive motor 6 and one with the drive motor. 6 coupled belt transmission 16.
  • the belt transmission 16 consists of an engine-side pulley 28 and. a roller-side pulley 24 which are coupled to one another by at least one drive belt 30.
  • the drive belt 30 is preferably composed of V-belts.
  • FIG. 2 shows the drive train 18 consisting of the drive motor 6, which can be coupled to a pump distributor gear 7, to which various hydraulic drives for different functions of the construction machine can be connected.
  • the drive motor 6 or the pump transfer case 7 can be coupled to the motor-side pulley 28 via a clutch 9.
  • the work roll 8 is mounted in the walls of the machine frame 4.
  • a reduction gear 25 can be arranged in the work roll 8, which reduces the speed of the roller-side pulley 24, for example in a ratio of 1:20.
  • the work roll 8 can thus work at a working speed of approximately 100 rpm if the internal combustion engine is operated at a speed of 2000 rpm and the belt transmission 16 has a transmission ratio of 1: 1.
  • a seat 27 is articulated about vertical axes via two articulated arms 29, 31 on side walls 15 of the vehicles 5, so that the seats 27 can be pivoted as desired in a horizontal plane.
  • auxiliary drive 20 which can be coupled to the drive train 18.
  • the work roll 8 is then in a raised state so that the tools 14 are not in engagement with the floor surface.
  • the work roll 8 can be rotated by a predetermined angle of rotation such that a next row of tools 14 can be brought into a favorable mounting position.
  • the arrangement of the tools 14 on the lateral surface 12 of the work roll 8 is best seen in FIG. 3.
  • the auxiliary drive 20 is activated, the work roll 8 can be rotated by a specific angular amount or for a specific period of time.
  • the torque of the auxiliary drive 20 is higher than the moment of inertia of the work roll 8 and the drive train 18 when the drive motor 6 is switched off or decoupled.
  • the torque should only be higher by such an amount that rotation of the work roll 8 is ensured without a torque being applied the work roll 8 is transmitted, which represents an accident risk for the operator.
  • the transmitted torque is in the range of 10 to 30% higher than the moment of inertia of the work roll 8 and of the part of the work strand 18 that is moved.
  • FIG. 4 shows a first exemplary embodiment of an auxiliary drive 20 that can be coupled to the belt transmission 16.
  • the drive belt 30 runs over the motor-side pulley 28, over a tensioning roller 38 that can be pressed on by a tensioning device 35 and over the roller-side pulley 24.
  • a friction roller 34 of the auxiliary drive 20 can be pressed onto the roller-side pulley 4 via an actuating device 37, as a result of which the auxiliary drive 20 can transmit a torque to the roller-side pulley 24.
  • the friction roller 34 has the advantage that the transmissible torque is limited. If the work roll 8 were blocked, the friction roller 34 would ultimately slip on the pulley 24, which practically precludes the risk of an accident.
  • FIG. 5 shows the auxiliary drive 20 in a decoupled position in which the adjusting device 37 consisting of a piston-cylinder unit has disengaged the friction roller 34.
  • 6 shows a further exemplary embodiment, in which the auxiliary drive 20 has a toothed wheel 39 instead of the friction roller 34, which meshes with an external toothing 41 on the outer circumference of the pulley 24.
  • the auxiliary drive 20 with gear 39 can also, as shown in FIG. 7, be coupled directly to a toothed belt of the drive belt 30, it being sufficient for one of the belts to be provided with teeth. 7 shows the toothing of the toothed belt for simplification only in the area of the gear 39.
  • auxiliary drive is coupled to the driven side of the clutch 9 in FIG. 2.
  • a movable auxiliary drive 20 can be coupled to the pulley 24 coaxially to the axis of rotation of the roller-side pulley 24, the pulley 24 and the auxiliary drive 20 having mutually adapted coaxial coupling elements.
  • the movable auxiliary drive can be supported on a belt drive housing surrounding the belt transmission 16, to which the auxiliary drive can be detachably fastened.
  • the motor of the auxiliary drive 20 of the exemplary embodiments described above preferably consists of an electric motor which can be supplied with power by an alternator, a battery or an additional unit.
  • the electric motor has the advantage that an idle operation is possible without the auxiliary drive 20 having to be decoupled from the drive train 18.
  • the actuating device 37 can be omitted and the auxiliary drive 20 can be permanently coupled to the drive train 18.
  • the auxiliary drive can also have a hydraulic or pneumatic drive, which, however, in the event that the auxiliary drive 20 cannot be decoupled from the drive train 18, must be provided with a control valve which permits idle operation.
  • the auxiliary drive 20 has a controller that can be activated via a remote control 33 and controls the duty cycle of the engine. It is advantageously provided that each time the auxiliary drive is activated by a remote control switch, the preset maximum switch-on duration and thus a predetermined maximum angular rotation of the work roll 14 are maintained.
  • the auxiliary drive 20 stops prematurely.
  • the auxiliary drive 20 preferably has a safety circuit, according to which the motor of the auxiliary drive 20 can only be switched on when the drive motor 6 is switched off.
  • a safety circuit can be provided which stops the auxiliary drive 20 when a predetermined maximum section modulus of the work roll 8 is exceeded.
  • the remote control 33 for the auxiliary drive is preferably located on the seat 27 for the operator.
  • the remote control 33 can also be provided with a magnetic base, as a result of which it can be attached to metallic parts of the construction machine 1 as far as the operator can reach.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Road Paving Machines (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Soil Working Implements (AREA)
  • Body Structure For Vehicles (AREA)
  • Road Repair (AREA)
  • Machine Tool Units (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention relates to a construction machine (1) for machining floor surfaces, comprising a running gear (2) which carries a chassis (2); a drive motor (6); a work roller (8) which is positioned on the chassis and which comprises a lateral area (12) to which interchangeable tools (14) are fixed; and a drive line (18) for the work roller (8), said drive line consisting of at least the drive motor and a gearbox which is coupled to said drive motor (6). An auxiliary drive (20) can be coupled to the drive line (18) and rotates the work roller (8) in a raised position about a pre-determined or a selectable angle of rotation, the torque of the auxiliary drive (20) being higher than the moment of inertia of the work roller (8) and the drive line (18) when the drive motor (6) is turned off or decoupled.

Description

Baumaschine zum Bearbeiten von Bodenoberflächen Construction machine for working on floor surfaces
Die Erfindung betrifft eine Baumaschine zum Bearbeiten von Bodenoberflächen nach dem Oberbegriff des Anspruchs 1.The invention relates to a construction machine for processing floor surfaces according to the preamble of claim 1.
Derartige Baumaschinen, zum Beispiel Großfräsen oder Kaltfräsen, weisen einen Maschinenrahmen auf, in dem eine quer zu der zu bearbeitenden Fahrspur verlaufende Fräswalze drehbar gelagert ist. Der Maschinenrahmen nimmt ferner noch den Fräswalzenantrieb auf αnd wird von mehreren vorzugsweise vor und hinter der Fräswalze angeordneten Fahrschiffen eines Fahrwerks höhenverstellbar getragen.Construction machines of this type, for example large milling machines or cold milling machines, have a machine frame in which a milling drum running transversely to the lane to be machined is rotatably mounted. The machine frame also adopts the milling drum drive and is height-adjustable by a plurality of carriages, preferably arranged in front of and behind the milling drum.
Derartige Groß- oder Kaltfräsen, bzw. Recycler werden zum Abfrasen von Straßenbelägen, -.zum Beispiel auf Autobahnen oder Landstraßen eingesetzt. Die Fräswalzen sind auf ihrer ■ Mantelfläche mit auswechselbaren Werkzeugen bestückt. Bei äußerst harten Straßenbelägen kann es vorkommen, dass die Werkzeuge lediglich eine Standzeit von einer halben Stunde aufweisen und dass dann alle Werkzeuge der Fräswalze ausgetauscht werden müssen. Hierzu kann das Fahrwerk oder die Fräswalze angehoben werden bis die Fräswalze nicht mehr mit der Bodenoberfläche in Kontakt ist. Eine Bedienungsperson kann nach Wegklappen eines Gehäuseteils des Walzengehäuses den Austausch der Werkzeuge vornehmen. Bei derartigen Baumaschinen mit mechanischem Antrieb muss die Fräswalze zum Auswechseln aller Werkzeuge von Zeit zu Zeit gedreht werden. Dies kann von Hand geschehen, was allerdings sehr hohe Kräfte erfordert. Es ist auch bekannt, die Arbeite- oder Fräswalze mit Hilfe einer Handkurbel zu drehen, wobei die Handkurbel mit einem Untersetzungsgetriebe der Fräswalze gekoppelt wird. Da die Handkurbel nur außen an der Maschine ansetzbar ist, sind letztlich für den Werkzeugwechselvorgang zwei Bedienungspersonen erforderlich-.Large or cold milling machines or recyclers of this type are used for milling off road surfaces, for example on motorways or country roads. The milling drums are equipped with ■ interchangeable tools on their outer surface. At extreme hard road surfaces, it can happen that the tools only have a service life of half an hour and then all tools of the milling drum have to be replaced. For this purpose, the undercarriage or the milling drum can be raised until the milling drum is no longer in contact with the ground surface. An operator can replace the tools after folding away a housing part of the roller housing. In such construction machines with mechanical drive, the milling drum must be rotated from time to time to replace all tools. This can be done by hand, but this requires very high forces. It is also known to rotate the work or milling drum with the aid of a hand crank, the hand crank being coupled to a reduction gear of the milling drum. Since the hand crank can only be attached to the outside of the machine, two operators are ultimately required for the tool change process.
Die Drehung der Arbeits- oder Fräswalze mit Hilfe des Antriebsmotors verbietet sich aus Sicherheitsgründen. Außerdem soll die Arbeitswalze nur um einen kleinen Drehwinkel weitergedreht werden, damit die nächste Werkzeugreihe ausgewechselt werden kann.The rotation of the work or milling drum with the help of the drive motor is prohibited for safety reasons. In addition, the work roll should only be rotated by a small angle so that the next row of tools can be replaced.
Der Erfindung liegt die Aufgabe zugrunde, eine Baumaschine der eingangs genannten Art derart zu verbessern, dass ein Auswechseln der Werkzeuge mit einem verringerten Personal- und Zeitbedarf und mit einer verringerten Unfallgefahr ermöglicht wird.The object of the invention is to improve a construction machine of the type mentioned at the outset in such a way that the tools can be replaced with a reduced need for personnel and time and with a reduced risk of accidents.
Zur Lösung dieser Aufgabe dienen die Merkmale des Anspruchs 1.The features of claim 1 serve to achieve this object.
Die Erfindung sieht in vorteilhafter Weise vor, dass ein Hilfsantrieb mit dem Antriebsstrang koppelbar ist, der die Arbeitswalze im angehobenen Zustand um einen vorbestimmten oder wählbaren Drehwinkel verdreht, wobei das Drehmoment des Hilfsantriebs bei ausgeschaltetem oder entkoppeltem Antriebsmotor höher ist als das Trägheitsmoment der Arbeitswalze und des mit der Arbeitswalze mitbewegten Teils des Antriebsstrangs. Der Hilfsantrieb dreht die Arbeitswalze bei jeder Betätigung um einen kleinen Drehwinkel, um noch nicht ausgewechselte Werkzeuge in eine günstigere Montageposition zu bringen. Dabei ist das Drehmoment des Hilfsantriebs etwas höher als das Trägheitsmoment der Arbeitswalze und des mitbewegten Antriebsstrangs, um einerseits eine Drehbewegung zu ermöglichen und anderseits die Unfallgefahr möglichst gering zu halten. Der Antriebsmotor für die Arbeitswalze ist dabei außer Betrieb oder entkoppelt.The invention advantageously provides that an auxiliary drive can be coupled to the drive train, which rotates the work roll by a predetermined or selectable angle of rotation in the raised state, the torque of the auxiliary drive being greater than the moment of inertia of the work roll when the drive motor is switched off or decoupled part of the drive train moving with the work roll. The auxiliary drive rotates the work roll by a small angle of rotation each time it is actuated in order to bring tools that have not yet been replaced into a more favorable mounting position. The torque of the auxiliary drive is slightly higher than the moment of inertia of the work roll and the drivetrain that moves with it, on the one hand to enable a rotary movement and on the other hand to keep the risk of accidents as low as possible. The drive motor for the work roll is out of operation or decoupled.
Die Erfindung ermöglicht in vorteilhafter Weise die Reduzierung des Zeitbedarfs für den Werkzeugwechsel, da der Hilfsantrieb von der Bedienungsperson an der Arbeitswalze betätigt werden kann. Da der Hilfsantrieb die Arbeitswalze mit einer geringen Leistung antreibt, ist die Unfallgefahr nahezu ausgeschlossen, die dadurch entsteht, dass sich Bekleidungsteile der Bedienungsperson in den Werkzeugen der Arbeitswalze verfangen können, wenn diese gedreht wird. Da das Drehmoment des Hilfsantriebs gerade genügt, um eine Drehbewegung der Arbeitswalze mit ca. 3 U/min zu ermöglichen, kann der Motor des Hilfsantriebs beim Auftreten höherer Kräfte an der Arbeitswalze schnell gestoppt werden. Außerdem stoppt der Hilfsantrieb nach jeder Inbetriebnahme automatisch nach ca. 4 Sekunden.The invention advantageously enables the time required for the tool change to be reduced, since the auxiliary drive can be actuated by the operator on the work roll. Since the auxiliary drive drives the work roll with a low output, the risk of an accident, which arises from the fact that the operator's clothing parts can get caught in the tools of the work roll when it is rotated, is virtually eliminated. Since the torque of the auxiliary drive is just sufficient to enable the work roll to rotate at approx. 3 rpm, the motor of the auxiliary drive can be stopped quickly when higher forces occur on the work roll. The auxiliary drive also stops automatically after every 4 seconds.
Vorzugsweise ist vorgesehen, dass das zwischen Arbeitsmotor und Arbeitswalze angeordnete Getriebe aus einem Riemengetriebe mit mindestens zwei Riemenscheiben und mindestens einem Antriebsriemen besteht und dass der Hilfsantrieb mit dem Riemengetriebe koppelbar ist. Bei einem Riemengetriebe lässt sich der Hilfsantrieb in vorteilhafter Weise derart ankoppeln, dass keine Vergrößerung der Breite der Baumaschine erforderlich ist. Der Hilfsantrieb kann nämlich innerhalb des Riemenantriebsgehäuses untergebracht werden, wodurch die Baumaschine nicht verbreitert wird. Es kann vorgesehen sein, dass die motorseitige Riemenscheibe des Riemengetriebes von dem Antriebsmotor über eine Kupplung entkoppelbar ist. Auf diese Weise kann zuverlässig der Kraftfluss zwischen Antriebsmotor und Arbeitswalze unterbrochen werden.It is preferably provided that the transmission arranged between the working motor and the work roll consists of a belt transmission with at least two belt pulleys and at least one drive belt and that the auxiliary drive can be coupled to the belt transmission. In the case of a belt transmission, the auxiliary drive can advantageously be coupled in such a way that no increase in the width of the construction machine is required. The auxiliary drive can namely be housed within the belt drive housing, whereby the construction machine is not widened. It can be provided that the engine-side pulley of the belt transmission can be decoupled from the drive motor via a clutch. In this way, the flow of power between the drive motor and work roll can be reliably interrupted.
Bei der bevorzugten Ausführungsform ist vorgesehen, dass der Hilfsantrieb über eine Reibrolle mit dem Riemengetriebe koppelbar ist.In the preferred embodiment it is provided that the auxiliary drive can be coupled to the belt transmission via a friction roller.
Dabei kann die Reibrolle mit der walzenseitigen Riemenscheibe koppelbar sein. Die Verwendung einer Reibrolle hat auch den Vorteil, dass das übertragbare Drehmoment begrenzt ist. Bei einem zu hohen Widerstandsmoment, z.B. bei einer Blockade der Arbeitswalze kann die Reibrolle durchrutschen, wodurch die Unfallgefahr erheblich reduziert wird, da beim Drehen der Arbeitswalze keine hohen Kräfte auftreten können. Dies ist beispielsweise von Bedeutung, wenn sich Kleidungsstücke einer Bedienungsperson an den Werkzeugen der Arbeitswalze während der Drehung der Arbeitswalze verhaken.The friction roller can be coupled to the roller-side pulley. The use of a friction roller also has the advantage that the transferable torque is limited. If the section modulus is too high, e.g. If the work roll is blocked, the friction roller can slip, which considerably reduces the risk of accidents, since high forces cannot occur when the work roll is rotated. This is important, for example, if an operator's clothes get caught on the tools of the work roll while the work roll is rotating.
Alternativ kann der Hilfsantrieb mit dem mindestens einen Antriebsriemen angekoppelt sein.Alternatively, the auxiliary drive can be coupled to the at least one drive belt.
Nach einer weiteren Alternative kann vorgesehen sein, daß der Hilfsantrieb über ein Zahnrad mit dem Riemengetriebe gekoppelt ist. Beispielsweise kann mindestens ein Antriebsriemen des Riemengetriebes aus einem Zahnriemen bestehen, der mit dem Zahnrad des Hilfsantriebs in Eingriff ist.According to a further alternative it can be provided that the auxiliary drive is coupled to the belt transmission via a gearwheel. For example, at least one drive belt of the belt transmission can consist of a toothed belt which is in engagement with the toothed wheel of the auxiliary drive.
Bei einem weiteren Ausführungsbeispiel kann die walzenseitige Riemenscheibe ein Zahnrad aufweisen, dass mit dem Zahnrad des Hilfsantriebs im Eingriff ist.In a further exemplary embodiment, the roller-side pulley can have a gearwheel which engages with the gearwheel of the auxiliary drive.
Das Riemengetriebe hat vorzugsweise eine Spannrolle, die im gespannten Zustand des mindestens einen Antriebsriemens die walzenseitige Riemenscheibe mit der motorseitigen Riemenscheibe koppelt und im gelösten Zustand die Riemenscheiben voneinander entkoppelt.The belt transmission preferably has a tension pulley which, in the tensioned state of the at least one drive belt, the roller-side pulley with the motor-side pulley couples and decouples the pulleys in the released state.
Der Hilfsantrieb kann auch, wenn die motorseitige Riemenscheibe über eine ' Kupplung entkoppelbar ist, mit einer Spannrolle des Riemengetriebes koppelbar sein. Hierzu kann die Spannrolle zugleich als Reibrolle des Hilfsantriebes auf die Antriebsriemen einwirken, oder die Reibrolle wird zum Antrieb der Spannrolle gegen diese angedrückt.The auxiliary drive can also, if the engine-side pulley is decoupled via a 'coupling to be coupled to a tensioning roller of the belt transmission. For this purpose, the tension roller can act as a friction roller of the auxiliary drive on the drive belt, or the friction roller is pressed against the tension roller to drive it.
Bei einem weiteren Ausführungsbeispiel, kann ein beweglicher Hilfsantrieb an das ortsfest an dem Maschinenrahmen befestigte Riemenantriebsgehäuse und eine Antriebsachse des Hilfsantriebs durch eine Aussparung des Riemenantriebsgehäuses hindurch koaxial an die walzenseitige Riemenscheibe ankoppelbar sein. Die Riemenscheibe und der Hilfsantrieb und die jeweiligen Gehäuseteile weisen hierzu einander angepasste Koppelelemente auf.In a further exemplary embodiment, a movable auxiliary drive can be coupled coaxially to the belt-side pulley to the belt drive housing fixedly attached to the machine frame and a drive axis of the auxiliary drive through a recess in the belt drive housing. For this purpose, the belt pulley and the auxiliary drive and the respective housing parts have coupling elements which are matched to one another.
Nach einer weiteren Alternative kann der Hilfsantrieb mit der Abtriebsseite der Kupplung koppelbar sein, die die motorseitige Riemenscheibe von dem Antriebsmotor entkoppelt.According to a further alternative, the auxiliary drive can be coupled to the output side of the clutch, which decouples the motor-side pulley from the drive motor.
Vorzugsweise enthält der Hilfsantrieb einen elektrisch betriebenen Motor. Ein derartiger Motor kann von einer Batterie einer Lichtmaschine oder einen Zusatzaggregat mit Strom versorgt werden und kann bei nicht angelegtem Strom im Leerlaufbetrieb mit dem Antriebsstrang permanent gekoppelt sein.The auxiliary drive preferably contains an electrically operated motor. Such an engine can be supplied with power by a battery of an alternator or an additional unit and can be permanently coupled to the drive train when the power is not applied in idle mode.
Alternativ können auch hydraulisch oder pneumatisch betriebene Motoren für den Hilfsantrieb verwendet werden, die mit einer Steuerschaltung auch einen Leerlaufbetrieb ermöglichen.Alternatively, hydraulically or pneumatically operated motors can be used for the auxiliary drive, which also enable an idle operation with a control circuit.
Bei einem besonders bevorzugten Ausführungsbeispiel weist der Hilfsantrieb eine Zeitsteuerung auf, wobei der Hilfsantrieb über eine Fernbedienung gestartet werden kann und die Zeitsteuerung die Einschaltdauer des Motors bestimmt. Bei jedem Start des Hilfsantriebs wird dann die Arbeitswalze um einen fest vorgegebenen, aber variabel einstellbaren Drehwinkel verdreht.In a particularly preferred exemplary embodiment, the auxiliary drive has a time control, the auxiliary drive being able to be started via a remote control and the time control determining the duty cycle of the motor. Every time the Auxiliary drive, the work roll is then rotated by a fixed, but variably adjustable angle of rotation.
Der Motor des Hilfsantriebs ist vorzugsweise nur bei ausgeschaltetem Antriebsmotor für die Arbeitswalze einschaltbar.The motor of the auxiliary drive can preferably only be switched on when the drive motor for the work roll is switched off.
Im Folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert.Exemplary embodiments of the invention are explained in more detail below with reference to the drawings.
Es zeigen:Show it:
Fig. 1 eine Großfräse mit Riemenantrieb für die ArbeitswalzeFig. 1 is a large milling machine with belt drive for the work roll
Fig. 2 den Antriebsstrang für die ArbeitswalzeFig. 2 shows the drive train for the work roll
Fig. 3 einen Querschnitt durch die ArbeitswalzeFig. 3 shows a cross section through the work roll
Fig. 4 ein erstes Ausführungsbeispiel eines HilfsantriebsFig. 4 shows a first embodiment of an auxiliary drive
Fig. 5 das Ausführungsbeispiel der Fig. 4 im entkoppeltenFig. 5 shows the embodiment of Fig. 4 in decoupled
ZustandStatus
Fig. 6 ein zweites Ausführungsbeispiel, undFig. 6 shows a second embodiment, and
Fig. 7 ein drittes Ausführungsbeispiel.Fig. 7 shows a third embodiment.
Die in Fig. 1 gezeigte Baumaschine 1 ist eine Großfräse mit einem von Fahrschiffen 5 eines höhenverstellbaren Fahrwerks 2. getragenen Maschinenrahmen 4. Der Maschinenrahmen 4 weist- eine zwischen den Fahrschiffen 5 angeordnete, an dem Maschinenrahmen 4 gelagerte Arbeitswalze 8 mit aus Fräsmeißeln bestehenden Werkzeugen 14 zum Abarbeiten eines Fahrbahnbelages auf. Die auswechselbaren Werkzeuge 14 sind auf der Mantelfläche 12 der Arbeitswalze 8 in einem vorgegebenen Muster angeordnet. Ein Antriebsstrang 18 treibt die Arbeitswalze 8 an. Zu dem Antriebsstrang 18 gehören zumindest ein Antriebsmotor 6, sowie ein mit dem Antriebsmotor. 6 gekoppeltes Riemengetriebe 16. Das Riemengetriebe 16 besteht aus einer motorseitigen Riemenscheibe 28 und. einer walzenseitigen Riemenscheibe 24, die mit mindestens einem Antriebsriemen 30 miteinander gekoppelt sind. Der Antriebsriemen 30 ist vorzugsweise aus Keilriemen zusammengesetzt. Fig. 2 zeigt den Antriebsstrang 18 bestehend aus dem Antriebsmotor 6, der mit einem Pumpenverteilergetriebe 7 gekoppelt sein kann, an dem verschiedene Hydroantriebe für unterschiedliche Funktionen der Baumaschine angeschlossen sein können.The construction machine 1 shown in FIG. 1 is a large milling machine with a machine frame 4 carried by vehicles 5 of a height-adjustable undercarriage 2. The machine frame 4 has a work roller 8 arranged between the vehicles 5 and mounted on the machine frame 4 with tools 14 consisting of milling cutters to process a road surface. The interchangeable tools 14 are arranged on the outer surface 12 of the work roll 8 in a predetermined pattern. A drive train 18 drives the work roll 8. The drive train 18 includes at least one drive motor 6 and one with the drive motor. 6 coupled belt transmission 16. The belt transmission 16 consists of an engine-side pulley 28 and. a roller-side pulley 24 which are coupled to one another by at least one drive belt 30. The drive belt 30 is preferably composed of V-belts. FIG. 2 shows the drive train 18 consisting of the drive motor 6, which can be coupled to a pump distributor gear 7, to which various hydraulic drives for different functions of the construction machine can be connected.
Der Antriebsmotor 6 bzw. das Pumpenverteilergetriebe 7 kann über eine Kupplung 9 mit der motorseitigen Riemenscheibe 28 gekoppelt sein. Die Arbeitswalze 8 ist in Wänden des Maschinenrahmens 4 gelagert. In der Arbeitswalze 8 kann ein Untersetzungsgetriebe 25 angeordnet sein, das die Drehzahl der walzenseitigen Riemenscheibe 24 beispielsweise im Verhältnis 1:20 untersetzt. Damit kann die Arbeitswalze 8 mit einer Arbeitsdrehzahl von ca. 100 U/min arbeiten, wenn der Verbrennungsmotor mit einer Drehzahl von 2000 U/min betrieben wird und das Riemengetriebe 16 ein Ü- bersetzungsverhältnis von 1:1 hat.The drive motor 6 or the pump transfer case 7 can be coupled to the motor-side pulley 28 via a clutch 9. The work roll 8 is mounted in the walls of the machine frame 4. A reduction gear 25 can be arranged in the work roll 8, which reduces the speed of the roller-side pulley 24, for example in a ratio of 1:20. The work roll 8 can thus work at a working speed of approximately 100 rpm if the internal combustion engine is operated at a speed of 2000 rpm and the belt transmission 16 has a transmission ratio of 1: 1.
Die auf der Mantelfläche 12 der Arbeitswalze 8 angeordneten auswechselbaren Werkzeuge 14 müssen am Ende ihrer Standzeit durch eine Bedienungsperson gegen neue Werkzeuge ausgewechselt werden, wozu die Bedienungsperson durch Öffnen einer Klappe 11 des Walzengehäuses 13 in den Arbeitsraum hinter der Arbeitswalze 8 eintreten kann. An den in Fahrtrichtung hinteren Fahrschiffen 5 ist jeweils ein Sitz 27 über zwei Gelenkarme 29, 31 an Seitenwänden 15 der Fahrschiffe 5 gelenkig um vertikale Achsen gelagert, so dass die Sitze 27 in einer horizontalen Ebene beliebig verschwenkbar sind.The interchangeable tools 14 arranged on the lateral surface 12 of the work roll 8 must be replaced by an operator at the end of their service life for new tools, for which the operator can enter the work space behind the work roll 8 by opening a flap 11 of the roll housing 13. On the rear-facing vehicles 5 in the direction of travel, a seat 27 is articulated about vertical axes via two articulated arms 29, 31 on side walls 15 of the vehicles 5, so that the seats 27 can be pivoted as desired in a horizontal plane.
Die Bedienungsperson kann von den Sitzen 27 aus eine Fernbedienung 33 für einen Hilfsantrieb 20 bedienen, der mit dem Antriebsstrang 18 koppelbar ist.From the seats 27, the operator can operate a remote control 33 for an auxiliary drive 20, which can be coupled to the drive train 18.
Die Arbeitswalze 8 befindet sich dann in einem angehobenen Zustand, so dass die Werkzeuge 14 nicht im Eingriff mit der Bodenoberfläche sind. Mit Hilfe des Hilfsantriebs 20 kann die Arbeitswalze 8 um einen vorbestimmten Drehwinkel derart verdreht werden, dass eine nächste Reihe von Werkzeugen 14 in eine günstige Montageposition gebracht werden können. Die Anordnung der Werkzeuge 14 auf der Mantelfläche 12 der Arbeitswalze 8 ist am besten aus Fig. 3 ersichtlich. Bei der Aktivierung des Hilfsantriebs 20 kann die Arbeitswalze 8 um einen bestimmten Winkelbetrag oder für eine bestimmte Zeitdauer gedreht werden.The work roll 8 is then in a raised state so that the tools 14 are not in engagement with the floor surface. With the help of the auxiliary drive 20, the work roll 8 can be rotated by a predetermined angle of rotation such that a next row of tools 14 can be brought into a favorable mounting position. The arrangement of the tools 14 on the lateral surface 12 of the work roll 8 is best seen in FIG. 3. When the auxiliary drive 20 is activated, the work roll 8 can be rotated by a specific angular amount or for a specific period of time.
Das Drehmoment des Hilfsantriebs 20 ist höher als das Trägheitsmoment der Arbeitswalze 8 und des Antriebsstrangs 18 bei ausgeschaltetem oder entkoppelten Antriebsmotor 6. Dabei soll das Drehmoment nur um einen solchen Betrag höher sein, dass eine Drehung der Arbeitswalze 8 gewährleistet ist, ohne dass ein Drehmoment auf die Arbeitswalze 8 übertragen wird, das für die Bedienungsperson eine Unfallgefahr darstellt. Beispielsweise genügt es, wenn das übertragene Drehmoment im Bereich von 10 bis 30% höher ist als das Trägheitsmoment der Arbeitswalze 8 und des mitbewegten Teils des Arbeitsstranges 18.The torque of the auxiliary drive 20 is higher than the moment of inertia of the work roll 8 and the drive train 18 when the drive motor 6 is switched off or decoupled. The torque should only be higher by such an amount that rotation of the work roll 8 is ensured without a torque being applied the work roll 8 is transmitted, which represents an accident risk for the operator. For example, it is sufficient if the transmitted torque is in the range of 10 to 30% higher than the moment of inertia of the work roll 8 and of the part of the work strand 18 that is moved.
Fig. 4 zeigt ein erstes Ausführungsbeispiel eines mit dem Riemengetriebe 16 koppelbaren Hilfsantriebs 20. Wie aus Fig. 4 ersichtlich, läuft der Antriebsriemen 30 über die motorseitige Riemenscheibe 28, über eine von einer Spanneinrichtung 35 andrückbare Spannrolle 38 und über die walzenseitige Riemenscheibe 24 um. An der walzenseitigen Riemenscheibe 4 ist eine Reibrolle 34 des Hilfsantriebs 20 über eine Stelleinrichung 37 andrückbar, wodurch der Hilfsantrieb 20 ein Drehmoment auf die walzenseitige Riemenscheibe 24 übertragen kann. Die Reibrolle 34 hat den Vorteil, dass das- übertragbare Drehmoment begrenzt ist. Bei einer Blockade der Arbeitswalze 8 würde die Reibrolle 34 letztlich auf der Riemenscheibe 24 durchrutschen, wodurch eine Unfallgefahr praktisch ausgeschlossen ist.FIG. 4 shows a first exemplary embodiment of an auxiliary drive 20 that can be coupled to the belt transmission 16. As can be seen from FIG. 4, the drive belt 30 runs over the motor-side pulley 28, over a tensioning roller 38 that can be pressed on by a tensioning device 35 and over the roller-side pulley 24. A friction roller 34 of the auxiliary drive 20 can be pressed onto the roller-side pulley 4 via an actuating device 37, as a result of which the auxiliary drive 20 can transmit a torque to the roller-side pulley 24. The friction roller 34 has the advantage that the transmissible torque is limited. If the work roll 8 were blocked, the friction roller 34 would ultimately slip on the pulley 24, which practically precludes the risk of an accident.
Fig. 5 zeigt den Hilfsantrieb 20 in einer entkoppelten Stellung, in. der die aus einer Kolbenzylindereinheit bestehende Stelleinrichtung 37 die Reibrolle 34 außer Eingriff gebracht hat. Fig. 6 zeigt ein weiteres Ausführungsbeispiel, bei dem der Hilfsantrieb 20 anstelle der Reibrolle 34 ein Zahnrad 39 aufweist, dass mit einer Außerverzahnung 41 auf dem Außenumfang der Riemenscheibe 24 im Eingriff ist.FIG. 5 shows the auxiliary drive 20 in a decoupled position in which the adjusting device 37 consisting of a piston-cylinder unit has disengaged the friction roller 34. 6 shows a further exemplary embodiment, in which the auxiliary drive 20 has a toothed wheel 39 instead of the friction roller 34, which meshes with an external toothing 41 on the outer circumference of the pulley 24.
Der Hilfsantrieb 20 mit Zahnrad 39 kann auch, wie in Fig. 7 gezeigt, direkt mit einem Zahnriemen des Antriebriemens 30 gekoppelt sein, wobei es genügt, dass einer der Riemen mit einer Verzahnung versehen ist. In Fig. 7 ist die Verzahnung des Zahnriemens zur Vereinfachung nur im Bereich des Zahnrades 39 dargestellt.The auxiliary drive 20 with gear 39 can also, as shown in FIG. 7, be coupled directly to a toothed belt of the drive belt 30, it being sufficient for one of the belts to be provided with teeth. 7 shows the toothing of the toothed belt for simplification only in the area of the gear 39.
Bei einem weiteren in der Zeichnung nicht dargestellten Ausführungsbeispiel kann vorgesehen sein, dass der Hilfsantrieb mit der Abtriebsseite der Kupplung 9 in Fig. 2 gekoppelt ist.In a further exemplary embodiment, not shown in the drawing, it can be provided that the auxiliary drive is coupled to the driven side of the clutch 9 in FIG. 2.
Bei einem weiteren in der Zeichnung nicht dargestellten Ausführungsbeispiel kann vorgesehen sein, dass ein beweglicher Hilfsantrieb 20 koaxial zur Drehachse der walzenseitigen Riemenscheibe 24 an die Riemenscheibe 24 ankoppelbar ist, wobei die Riemenscheibe 24 und der Hilfsantrieb 20 einander angepasste zueinander koaxiale Koppelelemente aufweisen. Dabei kann sich der bewegliche Hilfsantrieb an einem das Riemengetriebe 16 umgebenden Riemenantriebsgehäuses abstützen, an dem der Hilfsantrieb lösbar befestigt werden kann.In a further exemplary embodiment, which is not shown in the drawing, it can be provided that a movable auxiliary drive 20 can be coupled to the pulley 24 coaxially to the axis of rotation of the roller-side pulley 24, the pulley 24 and the auxiliary drive 20 having mutually adapted coaxial coupling elements. The movable auxiliary drive can be supported on a belt drive housing surrounding the belt transmission 16, to which the auxiliary drive can be detachably fastened.
Der Motor des Hilfsantriebs 20 der zuvor beschriebenen Ausführungsbeispiele besteht vorzugsweise aus einem Elektromotor, der von einer Lichtmaschine, einer Batterie oder einem Zusatzaggregat mit Strom versorgt werden kann. Der Elektromotor hat den Vorteil, dass ein Leerlaufbetrieb möglich ist, ohne dass der Hilfsantrieb 20 von dem Antriebsstrang 18 entkoppelt werden muss. In diesem Fall kann die Stelleinrichtung 37 entfallen und der Hilfsantrieb 20 permanent mit dem Antriebsstrang 18 gekop-- pelt sein. Alternativ kann der Hilfsantrieb auch einen hydraulischen oder pneumatischen Antrieb aufweisen, der allerdings für den Fall, dass der Hilfsantrieb 20 nicht von dem Antriebsstrang 18 entkoppelbar ist, mit einem den Leerlaufbetrieb zulassenden Steuerventil versehen sein muss.The motor of the auxiliary drive 20 of the exemplary embodiments described above preferably consists of an electric motor which can be supplied with power by an alternator, a battery or an additional unit. The electric motor has the advantage that an idle operation is possible without the auxiliary drive 20 having to be decoupled from the drive train 18. In this case, the actuating device 37 can be omitted and the auxiliary drive 20 can be permanently coupled to the drive train 18. Alternatively, the auxiliary drive can also have a hydraulic or pneumatic drive, which, however, in the event that the auxiliary drive 20 cannot be decoupled from the drive train 18, must be provided with a control valve which permits idle operation.
Der Hilfsantrieb 20 weist eine Steuerung auf, die über eine Fernbedienung 33 aktivierbar ist und die Einschaltdauer des Motors steuert. Dabei ist in vorteilhafter Weise vorgesehen, dass bei jeder Aktivierung des Hilfsantriebs durch einen Fernbedienungsschalter die voreingestellte maximale Einschaltdauer und damit eine vorbestimmte maximale Winkeldrehung der Arbeitswalze 14 eingehalten wird.The auxiliary drive 20 has a controller that can be activated via a remote control 33 and controls the duty cycle of the engine. It is advantageously provided that each time the auxiliary drive is activated by a remote control switch, the preset maximum switch-on duration and thus a predetermined maximum angular rotation of the work roll 14 are maintained.
Wird der Fernbedienungsschalter vor Ablauf der maximalen Einschaltdauer von beispielsweise 4 Sekunden losgelassen, stoppt der Hilfsantrieb 20 vorzeitig.If the remote control switch is released before the maximum operating time of, for example, 4 seconds has elapsed, the auxiliary drive 20 stops prematurely.
Vorzugsweise weist der Hilfsantrieb 20 eine Sicherheitsschaltung auf, gemäß der der Motor des Hilfsantriebs 20 nur bei ausgeschaltetem Antriebsmotor 6 einschaltbar ist.The auxiliary drive 20 preferably has a safety circuit, according to which the motor of the auxiliary drive 20 can only be switched on when the drive motor 6 is switched off.
Desweiteren kann eine Sicherheitsschaltung vorgesehen sein, die den Hilfsantrieb 20 beim Überschreiten eines vorgegebenen maximalen Widerstandsmomentes der Arbeitswalze 8 stoppt. Die Fernbedienung 33 für den Hilfsantrieb befindet sich vorzugsweise an dem Sitz 27 für die Bedienungsperson.Furthermore, a safety circuit can be provided which stops the auxiliary drive 20 when a predetermined maximum section modulus of the work roll 8 is exceeded. The remote control 33 for the auxiliary drive is preferably located on the seat 27 for the operator.
Die Fernbedienung 33 kann auch mit einem Magnetfuß versehen sein, wodurch sie beliebig in Reichweite der Bedienungsperson an metallischen Teilen der Baumaschine 1 befestigt werden kann. The remote control 33 can also be provided with a magnetic base, as a result of which it can be attached to metallic parts of the construction machine 1 as far as the operator can reach.

Claims

1. Patentansprüche 1. Claims
1. Baumaschine (1) zum Bearbeiten von Bodenoberflächen,1. Construction machine (1) for processing floor surfaces,
- mit einem Fahrwerk (2), das einen Maschinenrahmen (4) trägt,- With a chassis (2) which carries a machine frame (4),
- mit einem Antriebsmotor (6),- With a drive motor (6),
- mit einer an dem Maschinenrahmen (4) gelagerten Arbeitswalze (8), auf deren Mantelfläche (12) auswechselbare Werkzeuge (14) befestigt sind, und- With a on the machine frame (4) mounted work roll (8), on the outer surface (12) replaceable tools (14) are attached, and
- mit einem zumindest aus dem Antriebsmotor (6) und einem mit dem Antriebsmotor (6) gekoppelten Getriebe bestehenden Antriebsstrang (18) für die Arbeitswalze (8), d a d u r c h g e k e n n z e i c h n e t , dass ein Hilfsantrieb (20) mit dem Antriebsstrang (18) koppelbar ist, der die Arbeitswalze (8) im angehobenen Zustand um einen vorbestimmten oder wählbaren Drehwinkel verdreht, wobei das Drehmoment des Hilfsantriebs (20) höher ist als das Trägheitsmoment der Arbeitswalze (8) und des mit der Arbeitswalze (8) mitbewegten Teils des Antriebsstrangs (18) bei ausgeschaltetem oder entkoppeltem Antriebsmotor (6) .- With a drive train (18) for the work roll (8) consisting of at least the drive motor (6) and a transmission coupled to the drive motor (6), characterized in that an auxiliary drive (20) can be coupled to the drive train (18) the work roll (8) is rotated in the raised state by a predetermined or selectable angle of rotation, the torque of the auxiliary drive (20) being higher than the moment of inertia of the work roll (8) and of the part of the drive train (18) moving with the work roll (8) drive motor switched off or decoupled (6).
2. Baumaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Getriebe aus einem Riemengetriebe (16) mit mindestens zwei Riemenscheiben (24,28) und mindestens einem Antriebsriemen (30) besteht, und dass der Hilfsantrieb (20) mit dem Riemengetriebe (16) koppelbar ist.2. Construction machine according to claim 1, characterized in that the transmission consists of a belt transmission (16) with at least two belt pulleys (24, 28) and at least one drive belt (30), and that the auxiliary drive (20) with the belt transmission (16) can be coupled.
3. Baumaschine nach Anspruch 2 dadurch gekennzeichnet, dass die motorseitige Riemenscheibe (28) von dem Antriebsmotor (6) über eine Kupplung (9) entkoppelbar ist.3. Construction machine according to claim 2, characterized in that the motor-side pulley (28) from the drive motor (6) via a coupling (9) can be decoupled.
4. Baumaschine nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass der Hilfsantrieb (20) mit der die Arbeitswalze (8) antreibenden walzenseitigen Riemenscheibe (24) koppelbar ist. 4. Construction machine according to one of claims 2 or 3, characterized in that the auxiliary drive (20) with the roller (8) driving roller-side pulley (24) can be coupled.
5. Baumaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Hilfsantrieb (20) mit dem mindestens einen Antriebsriemen (30) koppelbar ist.5. Construction machine according to claim 2 or 3, characterized in that the auxiliary drive (20) with the at least one drive belt (30) can be coupled.
6. Baumaschine nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Hilfsantrieb (20) über eine Reibrolle (34) mit dem Riemengetriebe (16) koppelbar ist.6. Construction machine according to one of claims 2 to 5, characterized in that the auxiliary drive (20) via a friction roller (34) with the belt transmission (16) can be coupled.
7. Baumaschine nach Anspruch 6 dadurch gekennzeichnet, dass der Hilfsantrieb (20) über eine Reibrolle (34) mit der walzenseitigen Riemenscheibe (24) koppelbar ist.7. Construction machine according to claim 6, characterized in that the auxiliary drive (20) via a friction roller (34) with the roller-side pulley (24) can be coupled.
8. Baumaschine nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Hilfsantrieb (20) über ein Zahnrad (39) mit dem Riemengetriebe (16) gekoppelt ist.8. Construction machine according to one of claims 2 to 5, characterized in that the auxiliary drive (20) via a gear (39) is coupled to the belt transmission (16).
9. Baumaschine nach Anspruch 8, dadurch gekennzeichnet, dass mindestens ein Antriebsriemen (30) ein Zahnriemen ist, der mit dem Zahnrad (39) des Hilfsantriebs (20) im Eingriff ist.9. Construction machine according to claim 8, characterized in that at least one drive belt (30) is a toothed belt which is in engagement with the gear (39) of the auxiliary drive (20).
10. Baumaschine nach Anspruch 8, dadurch gekennzeichnet, dass die walzenseitige Riemenscheibe (24) ein Zahnrad aufweist ; das mit dem Zahnrad des Hilfsantriebs (20) im Eingriff ist.10. Construction machine according to claim 8, characterized in that the roller-side pulley (24) has a gear; which is in engagement with the gear of the auxiliary drive (20).
11. Baumaschine nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, dass das Riemengetriebe (16) eine Spannrolle (38) aufweist, die im gespannten Zustand des mindestens einen11. Construction machine according to one of claims 2 to 10, characterized in that the belt transmission (16) has a tensioning roller (38) which in the tensioned state of the at least one
Antriebsriemens (30) die walzenseitige Riemenscheibe (24) mit der motorseitigen Riemenscheibe (28) koppelt und im gelösten Zustand die Riemenscheiben (24,28) entkoppelt.Drive belt (30) couples the roller-side pulley (24) to the motor-side pulley (28) and decouples the pulleys (24, 28) in the released state.
12. Baumaschine nach Anspruch 3, dadurch gekennzeichnet, dass das Riemengetriebe (16) eine Spannrolle (38) aufweist, und dass der Hilfsantrieb (20) über die Spannrolle (38) mit dem mindestens einen Antriebsriemen (30) koppelbar ist. 12. Construction machine according to claim 3, characterized in that the belt transmission (16) has a tension roller (38), and that the auxiliary drive (20) via the tension roller (38) can be coupled to the at least one drive belt (30).
13. Baumaschine nach Anspruch 3, dadurch gekennzeichnet, dass der Hilfsantrieb (20) mit der Abtriebsseite der Kupplung (9) koppelbar ist.13. Construction machine according to claim 3, characterized in that the auxiliary drive (20) with the output side of the clutch (9) can be coupled.
14. Baumaschine nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass der Hilfsantrieb (20) einen elektrisch, hydraulisch oder pneumatisch betriebenen Motor aufweist.14. Construction machine according to one of claims 1 to 13, characterized in that the auxiliary drive (20) has an electrically, hydraulically or pneumatically operated motor.
15. Baumaschine nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass der Hilfsantrieb (20) eine Steuerung aufweist, dass der Hilfsantrieb (20) über eine mit der Steuerung gekoppelten Fernbedienung (33) aktivierbar ist und dass die Steuerung die maximale Einschaltdauer des Motors für den Hilfsantrieb (20) steuert.15. Construction machine according to one of claims 1 to 14, characterized in that the auxiliary drive (20) has a controller, that the auxiliary drive (20) can be activated via a remote control (33) coupled to the controller and that the controller controls the maximum duty cycle of the Motors for the auxiliary drive (20) controls.
16. Baumaschine nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass der Hilfsantrieb (20) eine Sicherheitsschaltung aufweist, die beim Überschreiten eines voreingestellten Widerstandsmomentes den Hilfsantrieb (20) abschaltet.16. Construction machine according to one of claims 1 to 15, characterized in that the auxiliary drive (20) has a safety circuit which switches off the auxiliary drive (20) when a preset resistance torque is exceeded.
17. Baumaschine nach Anspruch 15 oder 16, dadurch gekennzeichnet, dass die Fernbedienung (33) für den Hilfsantrieb (20) an einem über die Arbeitsbreite der Arbeitswalze (8) verfahrbaren Sitz (27) für eine Bedienungsperson angeordnet ist.17. Construction machine according to claim 15 or 16, characterized in that the remote control (33) for the auxiliary drive (20) on a working width of the work roll (8) movable seat (27) is arranged for an operator.
18. Baumaschine nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass der Hilfsantrieb (20) nur bei ausgeschaltetem Antriebsmotor (6) einschaltbar ist. 18. Construction machine according to one of claims 1 to 17, characterized in that the auxiliary drive (20) can only be switched on when the drive motor (6) is switched off.
EP01929639A 2000-06-27 2001-05-10 Construction machine for machining floor surfaces Expired - Lifetime EP1294991B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10031195 2000-06-27
DE10031195A DE10031195C1 (en) 2000-06-27 2000-06-27 Construction machine for working on floor surfaces
PCT/EP2001/005337 WO2002001005A1 (en) 2000-06-27 2001-05-10 Construction machine for machining floor surfaces

Publications (3)

Publication Number Publication Date
EP1294991A1 true EP1294991A1 (en) 2003-03-26
EP1294991B1 EP1294991B1 (en) 2006-07-12
EP1294991B2 EP1294991B2 (en) 2011-06-15

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP01108351A Expired - Lifetime EP1167626B1 (en) 2000-06-27 2001-04-03 Construction machine for treating surfaces
EP01929639A Expired - Lifetime EP1294991B2 (en) 2000-06-27 2001-05-10 Construction machine for machining floor surfaces

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01108351A Expired - Lifetime EP1167626B1 (en) 2000-06-27 2001-04-03 Construction machine for treating surfaces

Country Status (8)

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US (9) US7644994B2 (en)
EP (2) EP1167626B1 (en)
AT (2) ATE293721T1 (en)
AU (2) AU2001256349B2 (en)
BR (1) BR0111996B1 (en)
DE (4) DE10031195C1 (en)
ES (2) ES2240267T3 (en)
WO (1) WO2002001005A1 (en)

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Also Published As

Publication number Publication date
US8167378B2 (en) 2012-05-01
EP1294991B1 (en) 2006-07-12
US20180058019A1 (en) 2018-03-01
US20130285434A1 (en) 2013-10-31
US20040021364A1 (en) 2004-02-05
US20140333116A1 (en) 2014-11-13
US8480181B2 (en) 2013-07-09
WO2002001005A1 (en) 2002-01-03
US20100141014A1 (en) 2010-06-10
EP1294991B2 (en) 2011-06-15
EP1167626A1 (en) 2002-01-02
US7901010B2 (en) 2011-03-08
ES2267762T3 (en) 2007-03-16
US7644994B2 (en) 2010-01-12
US9512576B2 (en) 2016-12-06
ATE293721T1 (en) 2005-05-15
ES2267762T5 (en) 2011-11-14
AU5634901A (en) 2002-01-08
US20120200141A1 (en) 2012-08-09
US7922255B2 (en) 2011-04-12
DE10031195C1 (en) 2002-01-10
US8807662B2 (en) 2014-08-19
US9624628B2 (en) 2017-04-18
ES2240267T3 (en) 2005-10-16
DE20122928U1 (en) 2010-04-08
EP1167626B1 (en) 2005-04-20
DE50105935D1 (en) 2005-05-25
BR0111996B1 (en) 2014-04-01
US20100141015A1 (en) 2010-06-10
ATE333008T1 (en) 2006-08-15
US20110215634A1 (en) 2011-09-08
BR0111996A (en) 2003-07-29
DE50110458D1 (en) 2006-08-24
AU2001256349B2 (en) 2006-06-15
US20170081812A1 (en) 2017-03-23

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