EP1068398B1 - Device for milling off ground surfaces, especially roadways - Google Patents

Device for milling off ground surfaces, especially roadways Download PDF

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Publication number
EP1068398B1
EP1068398B1 EP99916834A EP99916834A EP1068398B1 EP 1068398 B1 EP1068398 B1 EP 1068398B1 EP 99916834 A EP99916834 A EP 99916834A EP 99916834 A EP99916834 A EP 99916834A EP 1068398 B1 EP1068398 B1 EP 1068398B1
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EP
European Patent Office
Prior art keywords
shoe
belt
belt shoe
conveying means
machine frame
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Expired - Lifetime
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EP99916834A
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German (de)
French (fr)
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EP1068398A1 (en
Inventor
Peter Busley
Olaf Gaertner
Herbert Ley
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Wirtgen GmbH
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Wirtgen GmbH
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    • 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

Definitions

  • the invention relates to a device for milling of ground surfaces, in particular roadways, after the Preamble of claim 1.
  • the known milling machines have a self-propelled chassis with a front wheel pair and a pair of rear wheels.
  • the chassis carries one Machine frame in which a milling drum across the Direction is stored.
  • Removal of the milled material to Reaching the milling drum is usually of one Enclosed housing in which pointing in the direction of travel Wall as a cover plate with a passage opening is formed for the milled material. That from the milling drum processed material is from the Milling drum dropped on a first conveyor belt, that the processed material at the front end of the Milling machine transfers to a discharge conveyor, the Transport to a loading area of a truck in the inclination and is laterally pivotable.
  • the milling drum is equipped with chisel tools, the forming a conveyor coil, the milled material transported to the passage opening of the cover.
  • a generic prior art is known from DE-C-38 31 161 known.
  • the rear end of the conveyor is stored in a shoe which is attached to a Cover plate between conveyor and milling drum is fixed and together with this height adjustable is.
  • the conveyor is relative to the sliding block pivotable.
  • the first conveyor belt in front of the milling drum can be light damaged due to cracking floor slabs, the repair of the conveyor belt the expansion of Conveyor required. Removal and installation of the conveyor is very laborious and time consuming. Furthermore, several people to carry out this work needed.
  • the invention is therefore based on the object, a Device of the type mentioned in such a way, that the risk of breakdowns considerably is reduced.
  • the invention advantageously provides that the Milling roller side end of the conveyor in one height adjustable adjustable belt shoe on the machine frame is stored, and that the belt shoe and the conveyor a rigid, relative to each other not forming a pivotable unit.
  • Belt shoe and conveyor can thus no relative movement to each other perform, which is no processed material jam between the belt shoe and the conveyor can.
  • the risk of malfunction, the expansion require the conveyor, thereby considerably reduced.
  • the band shoe will be shared with the one in it mounted rear end of the conveyor relative pivoted to the machine frame.
  • the conveyor is releasable in the rear, the milling drum facing area of the belt shoe stored, wherein the position of the belt shoe relative to the conveyor by the storage of Conveyor and by at least one connecting strut between the belt shoe and the conveyor is fixed.
  • the connecting strut ensures that the belt shoe no relative movement to the conveyor can perform.
  • At least one piston-cylinder unit is as a lifting device between the machine frame and the belt shoe arranged. With the help of this piston-cylinder unit the band shoe can be lifted vertically, for example, to overcome obstacles.
  • the Piston-cylinder unit can not follow the belt shoe Press down, but lift only when necessary. Furthermore can the belt shoe with the conveyor move freely upwards.
  • the handlebars and / or the connecting strut on both sides of the belt shoe are arranged.
  • the double arrangement of the handlebars and the connecting strut on both sides of the belt shoe causes accurate guidance of the rear end of the conveyor and the belt shoe along a predetermined Train.
  • the double arrangement of the connecting strut increases the torsional stiffness of the belt shoe and the conveyor formed unit.
  • the articulated to the machine frame mounted handlebar via a connecting rod are coupled.
  • the connecting rod synchronizes the movement of the handlebars on both sides, so that an exact parallel guidance of the belt shoe ensured with the rear end of the conveyor is.
  • the handlebar may be bent in a toggle-shaped manner, wherein the Connecting rod is mounted in the knee area.
  • the Improved storage of the connecting rod in the knee area the power transmission due to the leverage.
  • the strap shoe has a transversely extending shield to protect the conveyor belt of the conveyor on.
  • the shield prevents sharp-edged Material can damage the conveyor belt.
  • the underside of the belt shoe is from a rust several parallel in the direction of travel grate bars educated.
  • the rust also serves as Hold-down and as a sliding shoe.
  • a hold-down is arranged so that the Belt shoe extends over the entire width of the milling drum.
  • FIG. 1 An apparatus for milling ground surfaces 2, in particular road surfaces made of asphalt, concrete or the like.
  • a chassis 4 which carries a machine frame 6 and a milling drum 8 mounted on the machine frame 6, which extends transversely to the direction of travel of the chassis 4, is shown in Fig. 1.
  • the setting of the Milling depth is achieved by means of the height adjustment of Rear wheels.
  • Such machines are also called Frontladerfräsmaschine referred to as the milled off Material in forward direction on transport vehicles transport.
  • a first conveyor 10 with a Conveyor belt 12 arranged at an angle of inclination arranged in a shaft of the machine frame 6 is and the milled material on a second Conveyor 14 with another conveyor belt 15 transmits.
  • the second transport device 14 is height adjustable via an adjustable inclination angle and can additionally laterally, for example, by ⁇ 30 ° are pivoted, so that next to the lane of the Front loader milling machine loading stationary transport vehicles can be.
  • the milling drum 8 In order to remove as much as possible from the milled To reach material is the milling drum 8 surrounded by a roller box 18, wherein the in the direction of travel facing wall an opening 22 for having the milled material.
  • the passage opening 22 has relative to the milling drum 8 at different Milling depth adjustment always the same Position.
  • the milling drum 8 is provided with helically arranged chisel tools provided, which are arranged so that the milled material to the passage opening 22 in the Roller box 18 is transported.
  • a belt shoe 16 is height adjustable attached on the machine frame 6, a belt shoe 16 is height adjustable attached.
  • a piston-cylinder unit attached to the machine frame 6 17 provided.
  • the band shoe in the vertical direction be raised, for example, to obstacles overcome.
  • the band shoe 16 not after pressed down, but only raised if necessary become.
  • the belt shoe 16 takes the milling roller end of the Conveyor 10 on.
  • the storage of the rear End of the conveyor 10 is a fixed point between the belt shoe 16 and conveyor 10.
  • At the front End of the belt shoe 16 are on both sides connecting struts 20 is provided, which is a pivoting movement of the belt shoe 16 relative to the conveyor 10 prevent.
  • the band shoe 16 consists of a ground-parallel grate 28, which serves as a hold-down and as a sliding shoe.
  • Grate 28 consists of several parallel to the direction of travel aligned grate bars 32. Sideways, the rust is 28th bounded by vertical side walls 33.
  • a front plate 35 extends approximately parallel to the conveyor belt 12 of the conveyor 10.
  • Shield 34 arranged to protect the conveyor belt 12, this prevents the conveyor belt 12 with sharp-edged material is damaged.
  • a little bit in the direction of travel inclined sign 42 is in the upper Area U-shaped recessed to a passage opening to form for the processed material.
  • the milling drum 8 surrounding roller box 18 is like best seen in Fig. 4 recessed complementary and has a passage opening 22 for the processed Material on.
  • the piston-cylinder unit 17 On the side walls 33 of the belt shoe 16 is the one End of the piston-cylinder unit 17 articulated, whose other end is fixed to the machine frame 6.
  • the piston-cylinder unit 17 extends approximately parallel to the connecting struts 20 and serves as a lifting device for the out of the belt shoe 16 and the conveyor 10 formed unit.
  • a first on the side wall 33 Handlebar 24 hinged the articulated with a second Handlebar 26 is connected.
  • the second link 26 is in turn hinged to the machine frame 6.
  • the second Handlebar 26 is bent in the form of a toggle lever and in Joint region via a connecting rod 30 with the corresponding second link 26 on the other side the band shoe 16 connected.
  • the connecting rod 30 thus synchronizes the parallel guidance of the belt shoe 16 on both sides of the belt shoe.
  • the piston-cylinder unit 17 and the connecting strut 20 are provided on both sides of the belt shoe.
  • the band shoe 16 can total a stroke of about 300 mm.
  • each still a hold-down 40 is provided so that the Band shoe 16 with the both sides arranged hold-downs 40 covers the entire width of the milling drum 8.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Road Repair (AREA)
  • Defrosting Systems (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Road Signs Or Road Markings (AREA)
  • Crushing And Grinding (AREA)

Abstract

A device for milling off ground surfaces, especially roadways In a device for milling off ground surfaces (2), especially roadways, comprising a track assembly (4) supporting a machine frame (6), a rolling mill (8) supported in the machine frame (6) and extending transverse to the traveling direction, at least one conveying means (10) arranged in the traveling direction in front of the milling roll (8), for transporting away the milled off material, and a roll casing (18) with a passage opening (22) for the milled of material, facing the conveying means (10), it is provided that the end of the conveying means (10) at the milling roll is supported in a belt shoe (16) fixed at the machine frame (6) so as to be vertically adjustable, and wherein the belt shoe (16) and the conveying means (10) form a rigid unit that cannot be pivoted in relation to each other.

Description

Die Erfindung betrifft eine Vorrichtung zum Abfräsen von Bodenflächen, insbesondere Fahrbahnen, nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for milling of ground surfaces, in particular roadways, after the Preamble of claim 1.

Derartige Vorrichtungen werden auch als Frontladerfräsen bezeichnet. Die bekannten Fräsmaschinen weisen ein selbstfahrendes Fahrwerk mit einem Vorderradpaar und einem Hinterradpaar auf. Das Fahrwerk trägt einen Maschinenrahmen, in dem eine Fräswalze quer zur Fahrtrichtung gelagert ist. Um einen möglichst vollständigen Abtransport des abgefrästen Materials zu erreichen, ist die Fräswalze in der Regel von einem Gehäuse umgeben, bei dem die in Fahrtrichtung weisende Wand als Abdeckschild mit einer Durchtrittsöffnung für das abgefräste Material ausgebildet ist. Das von der Fräswalze abgearbeitete Material wird von der Fräswalze auf ein erstes Transportband abgeworfen, das das abgearbeitete Material am vorderen Ende der Fräsmaschine auf ein Abwurfband überträgt, das zum Transport auf eine Ladefläche eines Lastkraftwagens in der Neigung und seitlich verschwenkbar ist.Such devices are also used as front loaders designated. The known milling machines have a self-propelled chassis with a front wheel pair and a pair of rear wheels. The chassis carries one Machine frame in which a milling drum across the Direction is stored. To get as complete as possible Removal of the milled material to Reaching the milling drum is usually of one Enclosed housing in which pointing in the direction of travel Wall as a cover plate with a passage opening is formed for the milled material. That from the milling drum processed material is from the Milling drum dropped on a first conveyor belt, that the processed material at the front end of the Milling machine transfers to a discharge conveyor, the Transport to a loading area of a truck in the inclination and is laterally pivotable.

Die Fräswalze ist mit Meißelwerkzeugen bestückt, die eine Förderwendel bilden, die das abgefräste Material zur Durchtrittsöffnung des Abdeckschildes transportiert. The milling drum is equipped with chisel tools, the forming a conveyor coil, the milled material transported to the passage opening of the cover.

Ein gattungsgemäßer Stand der Technik ist aus der DE-C-38 31 161 bekannt. Das hintere Ende der Fördereinrichtung ist in einem Gleitschuh gelagert, der an einem Abdeckschild zwischen Fördereinrichtung und Fräswalze befestigt ist und gemeinsam mit diesem höhenverstellbar ist. Die Fördereinrichtung ist relativ zu dem Gleitschuh verschwenkbar.A generic prior art is known from DE-C-38 31 161 known. The rear end of the conveyor is stored in a shoe which is attached to a Cover plate between conveyor and milling drum is fixed and together with this height adjustable is. The conveyor is relative to the sliding block pivotable.

Das erste Transportband vor der Fräswalze kann leicht aufgrund aufbrechender Bodenplatten beschädigt werden, wobei die Reparatur des Transportbandes den Ausbau der Fördereinrichtung erfordert. Aus- und Einbau der Fördereinrichtung ist sehr arbeits- und zeitaufwendig. Desweiteren werden mehrere Personen zur Durchführung dieser Arbeiten benötigt.The first conveyor belt in front of the milling drum can be light damaged due to cracking floor slabs, the repair of the conveyor belt the expansion of Conveyor required. Removal and installation of the conveyor is very laborious and time consuming. Furthermore, several people to carry out this work needed.

Aus der nachveröffentlichten WO98/59114 ist eine Frontladerfräse bekannt, bei der eine Fördereinrichtung in einem Bandschuh lösbar gelagert ist. Auch bei diesem Stand der Technik ist die Fördereinrichtung relativ zu dem Bandschuh verschwenkbar.From the post-published WO98 / 59114 is a front loading router known in which a conveyor in a belt shoe is releasably mounted. Also with this The state of the art is the conveyor relative to swiveling the belt shoe.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art derart weiterzubilden, daß die Gefahr von Betriebsstörungen erheblich verringert ist.The invention is therefore based on the object, a Device of the type mentioned in such a way, that the risk of breakdowns considerably is reduced.

Zur Lösung dieser Aufgabe dienen die Merkmale des Anspruchs 1.To achieve this object are the features of the claim 1.

Die Erfindung sieht in vorteilhafter Weise vor, daß das fräswalzenseitige Ende der Fördereinrichtung in einem am Maschinenrahmen höhenverstellbar befestigten Bandschuh gelagert ist, und daß der Bandschuh und die Fördereinrichtung eine starre, relativ zueinander nicht verschwenkbare Einheit bilden. Bandschuh und Fördereinrichtung können somit keine Relativbewegung zueinander ausführen, wodurch sich kein abgearbeitetes Material zwischen Bandschuh und Fördereinrichtung verklemmen kann. Die Gefahr von Betriebsstörungen, die den Ausbau der Fördereinrichtung erfordern, wird dadurch erheblich reduziert. Der Bandschuh wird gemeinsam mit dem in ihm gelagerten hinteren Ende der Fördereinrichtung relativ zu dem Maschinenrahmen verschwenkt.The invention advantageously provides that the Milling roller side end of the conveyor in one height adjustable adjustable belt shoe on the machine frame is stored, and that the belt shoe and the conveyor a rigid, relative to each other not forming a pivotable unit. Belt shoe and conveyor can thus no relative movement to each other perform, which is no processed material jam between the belt shoe and the conveyor can. The risk of malfunction, the expansion require the conveyor, thereby considerably reduced. The band shoe will be shared with the one in it mounted rear end of the conveyor relative pivoted to the machine frame.

Vorzugsweise ist die Fördereinrichtung lösbar in dem hinteren, der Fräswalze zugewandten Bereich des Bandschuhs gelagert, wobei die Position des Bandschuhs relativ zu der Fördereinrichtung durch die Lagerung der Fördereinrichtung und durch mindestens eine Verbindungsstrebe zwischen Bandschuh und Fördereinrichtung fixiert ist. Die Verbindungsstrebe stellt sicher, daß der Bandschuh keine Relativbewegung zu der Fördereinrichtung ausführen kann.Preferably, the conveyor is releasable in the rear, the milling drum facing area of the belt shoe stored, wherein the position of the belt shoe relative to the conveyor by the storage of Conveyor and by at least one connecting strut between the belt shoe and the conveyor is fixed. The connecting strut ensures that the belt shoe no relative movement to the conveyor can perform.

Mindestens eine Kolben-Zylindereinheit ist als Hubeinrichtung zwischen dem Maschinenrahmen und dem Bandschuh angeordnet. Mit Hilfe dieser Kolben-Zylindereinheit kann der Bandschuh in Vertikalrichtung angehoben werden, um beispielsweise Hindernisse zu überwinden. Die Kolben-Zylindereinheit kann den Bandschuh nicht nach unten drücken, sondern nur bei Bedarf anheben. Im übrigen kann sich der Bandschuh mit der Fördereinrichtung frei nach oben bewegen.At least one piston-cylinder unit is as a lifting device between the machine frame and the belt shoe arranged. With the help of this piston-cylinder unit the band shoe can be lifted vertically, for example, to overcome obstacles. The Piston-cylinder unit can not follow the belt shoe Press down, but lift only when necessary. Furthermore can the belt shoe with the conveyor move freely upwards.

Bei einem bevorzugten Ausführungsbeispiel ist vorgesehen, daß bei einer Höhenveränderung zwei gelenkig miteinander verbundene Lenker den Bandschuh mit dem hinteren Ende der Fördereinrichtung führen, wobei der erste Lenker an dem Bandschuh und der zweite Lenker an dem Maschinenrahmen gelenkig gelagert sind. Die Lenker sorgen beim Anheben des Bandschuhs für eine exakte Bahnführung der aus dem Bandschuh und der Fördereinrichtung gebildeten Einheit. Die Einheit wird dabei um den Auflagepunkt der Fördereinrichtung in dem Schacht des Maschinenrahmens verschwenkt.In a preferred embodiment, it is provided that at a height change two articulated interconnected links the band shoe with the lead the rear end of the conveyor, wherein the first link on the belt shoe and the second link on the machine frame are articulated. The handlebars ensure a precise when lifting the belt shoe Web guide of the belt shoe and the conveyor formed unit. The unit will be around the point of support of the conveyor in the shaft pivoted the machine frame.

Vorzugsweise ist vorgesehen, daß die Lenker und/oder die Verbindungsstrebe auf beiden Seiten des Bandschuhs angeordnet sind. Die doppelte Anordnung der Lenker und der Verbindungsstrebe auf beiden Seiten des Bandschuhs bewirkt eine genaue Führung des hinteren Endes der Fördereinrichtung und des Bandschuhs entlang einer vorgegebenen Bahn. Die doppelte Anordnung der Verbindungsstrebe erhöht die Torsionssteifigkeit der aus dem Bandschuh und der Fördereinrichtung gebildeten Einheit.It is preferably provided that the handlebars and / or the connecting strut on both sides of the belt shoe are arranged. The double arrangement of the handlebars and the connecting strut on both sides of the belt shoe causes accurate guidance of the rear end of the conveyor and the belt shoe along a predetermined Train. The double arrangement of the connecting strut increases the torsional stiffness of the belt shoe and the conveyor formed unit.

Bei beidseitig an dem Maschinenrahmen gelagerten Lenkern ist vorzugsweise vorgesehen, daß die gelenkig an dem Maschinenrahmen gelagerten Lenker über eine Verbindungsstange gekoppelt sind. Die Verbindungsstange synchronisiert die Bewegung der Lenker auf beiden Seiten, so daß eine exakte Parallelführung des Bandschuhs mit dem hinteren Ende der Fördereinrichtung gewährleistet ist.When mounted on both sides of the machine frame handlebars is preferably provided that the articulated to the machine frame mounted handlebar via a connecting rod are coupled. The connecting rod synchronizes the movement of the handlebars on both sides, so that an exact parallel guidance of the belt shoe ensured with the rear end of the conveyor is.

Der Lenker kann kniehebelförmig gebogen sein, wobei die Verbindungsstange in dem Kniebereich gelagert ist. Die Lagerung der Verbindungsstange in dem Kniebereich verbessert die Kraftübertragung aufgrund der Hebelverhältnisse.The handlebar may be bent in a toggle-shaped manner, wherein the Connecting rod is mounted in the knee area. The Improved storage of the connecting rod in the knee area the power transmission due to the leverage.

Der Bandschuh weist ein sich quer erstreckendes Schutzschild zum Schutz des Transportbandes der Fördereinrichtung auf. Das Schutzschild verhindert, daß scharfkantiges Material das Transportband beschädigen kann. The strap shoe has a transversely extending shield to protect the conveyor belt of the conveyor on. The shield prevents sharp-edged Material can damage the conveyor belt.

An dem Walzenkasten sind Anschläge für die tiefste und/oder vorderste Position des Bandschuhs angeordnet. Der Anschlag für die tiefste Position des Bandschuhs begrenzt die Schwenkbewegung der aus dem Bandschuh und dem hinteren Ende der Fördereinrichtung gebildeten Einheit nach unten. Ein weiterer Anschlag für die vorderste Position des Bandschuhs verhindert eine Kollision mit dem Walzenkasten. Gleichwohl ist es möglich, den Bandschuh um bis zu 300 mm von der tiefsten Position anzuheben, wobei der Bandschuh und die Fördereinrichtung nur geringfügig verschwenkt werden.At the roller box stops for the deepest and / or arranged foremost position of the belt shoe. Of the Limit stop for the lowest position of the belt shoe the pivoting movement of the belt shoe and formed at the rear end of the conveyor unit downward. Another stop for the foremost Position of the belt shoe prevents a collision with the roller box. Nevertheless, it is possible to Belt shoe up to 300 mm from the lowest position lift, with the belt shoe and the conveyor only slightly pivoted.

Die Unterseite des Bandschuhs ist von einem Rost aus mehreren in Fahrtrichtung parallel verlaufenden Roststäben gebildet. Der Rost dient dabei zugleich als Niederhalter und als Gleitschuh.The underside of the belt shoe is from a rust several parallel in the direction of travel grate bars educated. The rust also serves as Hold-down and as a sliding shoe.

Vorzugsweise ist vorgesehen, daß auf beiden Seiten des Bandschuhs an der der Fräswalze zugewandten Kante jeweils ein Niederhalter angeordnet ist, so daß sich der Bandschuh über die gesamte Breite der Fräswalze erstreckt.Preferably, it is provided that on both sides of the Belt shoe on the milling drum facing edge respectively a hold-down is arranged so that the Belt shoe extends over the entire width of the milling drum.

Im folgenden werden unter Bezugnahme auf die Zeichnungen ein.Ausführungsbeispiel der Erfindung näher erläutert:In the following, with reference to the drawings an embodiment of the invention explained in more detail:

Es zeigen

Fig. 1
eine erfindungsgemäße Vorrichtung zum Abfräsen von Bodenoberflächen,
Fig. 2
eine schematische Darstellung der Position des Bandschuhs innerhalb des Maschinenrahmens relativ zur Fräswalze bei maximaler Frästiefe,
Fig. 3
die Position des Bandschuhs bei minimaler Frästiefe, und
Fig. 4
eine Draufsicht auf Fig. 1 entlang der Linie IV-IV.
Show it
Fig. 1
a device according to the invention for milling off ground surfaces,
Fig. 2
a schematic representation of the position of the belt shoe within the machine frame relative to the milling drum at maximum depth of cut,
Fig. 3
the position of the belt shoe at minimum milling depth, and
Fig. 4
a plan view of Fig. 1 along the line IV-IV.

Eine Vorrichtung zum Abfräsen von Bodenoberflächen 2, insbesondere Fahrbahnen aus Asphalt, Beton o.dgl. mit einem Fahrwerk 4, das einen Maschinenrahmen 6 trägt und eine an dem Maschinenrahmen 6 gelagerten Fräswalze 8, die sich quer zur Fahrtrichtung des Fahrwerks 4 erstreckt, ist in Fig. 1 gezeigt. Die Einstellung der Frästiefe erfolgt mit Hilfe der Höhenverstellung der Hinterräder. Derartige Maschinen werden auch als Frontladerfräsmaschine bezeichnet, da sie das abgefräste Material in Fahrtrichtung nach vorne auf Transportfahrzeuge transportieren. In Fahrtrichtung vor der Fräswalze 8 ist eine erste Fördereinrichtung 10 mit einem Transportband 12 angeordnet, die unter einem Neigungswinkel in einem Schacht des Maschinenrahmens 6 angeordnet ist und das abgefräste Material auf eine zweite Fördereinrichtung 14 mit einem weiteren Transportband 15 überträgt. Die zweite Transporteinrichtung 14 ist über einen verstellbaren Neigungswinkel höhenverstellbar und kann zusätzlich seitlich um beispielsweise ± 30° verschwenkt werden, so daß neben der Fahrspur der Frontladerfräsmaschine stehende Transportfahrzeuge beladen werden können. An apparatus for milling ground surfaces 2, in particular road surfaces made of asphalt, concrete or the like. With a chassis 4, which carries a machine frame 6 and a milling drum 8 mounted on the machine frame 6, which extends transversely to the direction of travel of the chassis 4, is shown in Fig. 1. The setting of the Milling depth is achieved by means of the height adjustment of Rear wheels. Such machines are also called Frontladerfräsmaschine referred to as the milled off Material in forward direction on transport vehicles transport. In the direction of travel in front of the milling drum 8 is a first conveyor 10 with a Conveyor belt 12 arranged at an angle of inclination arranged in a shaft of the machine frame 6 is and the milled material on a second Conveyor 14 with another conveyor belt 15 transmits. The second transport device 14 is height adjustable via an adjustable inclination angle and can additionally laterally, for example, by ± 30 ° are pivoted, so that next to the lane of the Front loader milling machine loading stationary transport vehicles can be.

Um einen möglichst vollständigen Abtransport des abgefrästen Materials zu erreichen, ist die Fräswalze 8 von einem Walzenkasten 18 umgeben, bei dem die in Fahrtrichtung weisende Wand eine Durchtrittsöffnung 22 für das abgefräste Material aufweist. Die Durchtrittsöffnung 22 hat relativ zur Fräswalze 8 auch bei unterschiedlichen Frästiefeneinstellung stets die gleiche Position.In order to remove as much as possible from the milled To reach material is the milling drum 8 surrounded by a roller box 18, wherein the in the direction of travel facing wall an opening 22 for having the milled material. The passage opening 22 has relative to the milling drum 8 at different Milling depth adjustment always the same Position.

Die Fräswalze 8 ist mit wendelförmig angeordneten Meißelwerkzeugen versehen, die so angeordnet sind, daß das abgefräste Material zur Durchtrittsöffnung 22 in dem Walzenkasten 18 transportiert wird.The milling drum 8 is provided with helically arranged chisel tools provided, which are arranged so that the milled material to the passage opening 22 in the Roller box 18 is transported.

Am Maschinenrahmen 6 ist ein Bandschuh 16 höhenverstellbar befestigt. Zur Höhenverstellung des Bandschuhs 16 ist eine an dem Maschinenrahmen 6 befestigte Kolben-Zylindereinheit 17 vorgesehen. Mit Hilfe dieser Kolben-Zylindereinheit kann der Bandschuh in Vertikalrichtung angehoben werden, um beispielsweise Hindernisse zu überwinden. Dabei kann der Bandschuh 16 nicht nach unten gedrückt werden, sondern nur bei Bedarf angehoben werden. Bei Erhöhung der Frästiefe stellt sich die Position des Bandschuhs 16 durch den Bodenkontakt selbsttätig ein.On the machine frame 6, a belt shoe 16 is height adjustable attached. For height adjustment of the band shoe 16 is a piston-cylinder unit attached to the machine frame 6 17 provided. With the help of this piston-cylinder unit can the band shoe in the vertical direction be raised, for example, to obstacles overcome. In this case, the band shoe 16 not after pressed down, but only raised if necessary become. When increasing the depth of cut, the Position of the belt shoe 16 by the ground contact automatically.

Der Bandschuh 16 nimmt das fräswalzenseitige Ende der Fördereinrichtung 10 auf. Die Lagerung des hinteren Endes der Fördereinrichtung 10 ist ein Fixpunkt zwischen Bandschuh 16 und Fördereinrichtung 10. Am vorderen Ende des Bandschuhs 16 sind beiderseits Verbindungsstreben 20 vorgesehen, die eine Schwenkbewegung des Bandschuhs 16 relativ zur Fördereinrichtung 10 verhindern. The belt shoe 16 takes the milling roller end of the Conveyor 10 on. The storage of the rear End of the conveyor 10 is a fixed point between the belt shoe 16 and conveyor 10. At the front End of the belt shoe 16 are on both sides connecting struts 20 is provided, which is a pivoting movement of the belt shoe 16 relative to the conveyor 10 prevent.

Der Bandschuh 16 besteht aus einem bodenparallelen Rost 28, der als Niederhalter und als Gleitschuh dient. Der Rost 28 besteht aus mehreren parallel zur Fahrtrichtung ausgerichteten Roststäben 32. Seitlich wird der Rost 28 durch vertikale Seitenwände 33 begrenzt. Am hinteren Ende des Bandschuhs 16 erstreckt sich ein Frontblech 35 in etwa parallel zu dem Transportband 12 der Fördereinrichtung 10. Am hinteren Ende des Bandschuhs ist ein Schutzschild 34 zum Schutz des Förderbandes 12 angeordnet, das verhindert, daß das Transportband 12 mit scharfkantigem Material beschädigt wird. Ein geringfügig in Fahrtrichtung geneigtes Schild 42 ist im oberen Bereich U-förmig ausgespart, um eine Durchtrittsöffnung für das abgearbeitete Material zu bilden.The band shoe 16 consists of a ground-parallel grate 28, which serves as a hold-down and as a sliding shoe. Of the Grate 28 consists of several parallel to the direction of travel aligned grate bars 32. Sideways, the rust is 28th bounded by vertical side walls 33. At the rear End of the belt shoe 16, a front plate 35 extends approximately parallel to the conveyor belt 12 of the conveyor 10. At the rear end of the belt shoe is a Shield 34 arranged to protect the conveyor belt 12, this prevents the conveyor belt 12 with sharp-edged material is damaged. A little bit in the direction of travel inclined sign 42 is in the upper Area U-shaped recessed to a passage opening to form for the processed material.

Der die Fräswalze 8 umgebende Walzenkasten 18 ist wie am besten aus Fig. 4 ersichtlich komplementär ausgespart und weist eine Durchtrittsöffnung 22 für das abgearbeitete Material auf.The milling drum 8 surrounding roller box 18 is like best seen in Fig. 4 recessed complementary and has a passage opening 22 for the processed Material on.

An den Seitenwänden 33 des Bandschuhs 16 ist das eine Ende der Kolben-Zylindereinheit 17 angelenkt, dessen anderes Ende an dem Maschinenrahmen 6 befestigt ist. Die Kolben-Zylindereinheit 17 verläuft in etwa parallel zu den Verbindungstreben 20 und dient als Hubeinrichtung für die aus dem Bandschuh 16 und der Fördereinrichtung 10 gebildeten Baueinheit. Neben der Kolben-Zylindereinheit 17 ist auf der Seitenwand 33 ein erster Lenker 24 angelenkt, der gelenkig mit einem zweiten Lenker 26 verbunden ist. Der zweite Lenker 26 ist seinerseits an dem Maschinenrahmen 6 angelenkt. Der zweite Lenker 26 ist in Form eines Kniehebels gebogen und im Gelenkbereich über eine Verbindungsstange 30 mit dem entsprechenden zweiten Lenker 26 auf der anderen Seite des Bandschuhs 16 verbunden. Die Verbindungsstange 30 synchronisiert somit die Parallelführung des Bandschuhs 16 auf beiden Seiten des Bandschuhs. Auch die Kolben-Zylindereinheit 17 und die Verbindungsstrebe 20 sind auf beiden Seiten des Bandschuhs vorgesehen. Die durch die Lenker 24,26 bewirkte Parallelführung des Bandschuhs ermöglicht, daß das Schild 42 nur eine geringfügige Schwenkbewegung ausführt, die nach unten mit Hilfe eines in Fahrtrichtung abstehenden Vorsprungs 44 begrenzt wird. Der Vorsprung 44 liegt unten in der tiefsten Position an einem Anschlag 36 an. Ein weiterer Anschlag 38 an dem Walzenkasten 18 begrenzt die Bewegung des Bandschuhs 16 in Richtung auf die Fräswalze 8.On the side walls 33 of the belt shoe 16 is the one End of the piston-cylinder unit 17 articulated, whose other end is fixed to the machine frame 6. The piston-cylinder unit 17 extends approximately parallel to the connecting struts 20 and serves as a lifting device for the out of the belt shoe 16 and the conveyor 10 formed unit. In addition to the piston-cylinder unit 17 is a first on the side wall 33 Handlebar 24 hinged, the articulated with a second Handlebar 26 is connected. The second link 26 is in turn hinged to the machine frame 6. The second Handlebar 26 is bent in the form of a toggle lever and in Joint region via a connecting rod 30 with the corresponding second link 26 on the other side the band shoe 16 connected. The connecting rod 30 thus synchronizes the parallel guidance of the belt shoe 16 on both sides of the belt shoe. Also the piston-cylinder unit 17 and the connecting strut 20 are provided on both sides of the belt shoe. By the handlebar 24,26 caused parallel guidance of the belt shoe allows the shield 42 only a slight Pivoting movement that runs down with Help a protruding projection 44 in the direction of travel is limited. The projection 44 is located in the bottom of the lowest position on a stop 36. Another Stop 38 on the roller box 18 limits the movement of the belt shoe 16 in the direction of the milling drum. 8

Der Bandschuh 16 kann insgesamt einen Hub von ca. 300 mm ausführen.The band shoe 16 can total a stroke of about 300 mm.

Beiderseits des Bandschuhs ist an der hinteren Kante jeweils noch ein Niederhalter 40 vorgesehen, so daß der Bandschuh 16 mit dem beiderseits angeordneten Niederhaltern 40 die gesamte Breite der Fräswalze 8 abdeckt.On both sides of the band shoe is at the rear edge each still a hold-down 40 is provided so that the Band shoe 16 with the both sides arranged hold-downs 40 covers the entire width of the milling drum 8.

Zum Herauslösen der Fördereinrichtung 10 muß das hintere Ende der Fördereinrichtung 10 an der Lagerung von dem Bandschuh gelöst werden und die oberen Enden der Verbindungsstreben 20 von der Fördereinrichtung gelöst werden. Auf diese Weise kann die Fördereinrichtung 10 schnell von dem Bandschuh 16 gelöst werden, so daß Reparaturen und Wartungsarbeiten in sehr kurzer Zeit ausgeführt werden können.To detach the conveyor 10, the rear End of the conveyor 10 at the storage of loosened the strap and the upper ends of the Connecting struts 20 released from the conveyor become. In this way, the conveyor 10 be quickly released from the belt shoe 16, so that Repairs and maintenance in a very short time can be executed.

Claims (11)

  1. A device for milling off ground surfaces (2), especially roadways, comprising a track assembly (4) supporting a machine frame (6), a rolling mill (8) supported in the machine frame (6) and extending transverse to the traveling direction, at least one conveying means (10) arranged in the traveling direction in front of the milling roll (8), for transporting away the milled off material, and a roll casing (18) with a passage opening (22) for the milled of material, facing the conveying means (10), and a supporting means for the conveying means (10) acting as a slide shoe,
    wherein
    the supporting means is a belt shoe (16) acting both as a downholder and a slide shoe,
    the end of the conveying means (10) at the milling roll is supported in a belt shoe (16) fixed at the machine frame (6) so as to be vertically adjustable,
    and wherein the belt shoe (16) and the conveying means (10) form a rigid unit that cannot be pivoted in relation to each other.
  2. The device of claim 1, wherein the conveying means (10) is removably supported in the rear part of the belt shoe (16) that faces the milling roll (8), and wherein at least one connecting strut (20) fixes the position of the belt shoe (16) in connection with the support of the conveying means (10) relative to the conveying means (10).
  3. The device of claim 1 or 2, wherein at least one piston-cylinder unit (17) is provided as a lifting means between the machine frame (6) and the belt shoe (16).
  4. The device of one of claims 1 to 3, wherein two hingedly connected connecting rods (24, 26) guide the unit formed by the belt shoe (16) and the rear end of the conveying means (10), the first connecting rod (24) being hinged to the belt shoe (16) and the second connecting rod (26) being hinged to the machine frame (6).
  5. The device of claim 4, wherein the first and second connecting rods (24, 26) and/or the connecting strut (20) are provided on both sides of the belt shoe (16).
  6. The device of claim 5, wherein the second connecting rods (26) that are hinged to the machine frame (6) on either side of the belt shoe (16), are coupled via a linking rod (30).
  7. The device of one of claims 4 to 6, wherein the second connecting rod (26) is bent in the manner of a toggle lever and the linking rod (30) is supported in the toggle area.
  8. The device of one of claims 1 to 7, wherein the belt shoe (16) has a protective shield (34) for protecting the conveyor belt (12) of the conveying means (10), said shield extending transverse to the travelling direction of the device.
  9. The device of one of claims 1 to 8, wherein the roll casing (18) is provided with stops (36, 38) for the lowest and/or the frontmost position of the belt shoe (16).
  10. The device of one of claims 1 to 9, wherein the bottom side of the belt shoe (16) is formed by a grid (28) of a plurality of grid bars (32) extending in parallel to the traveling direction.
  11. The device of one of claims 1 to 10, wherein a holding-down means (40) that extends over the entire width of the rolling mill (8) is provided on the bottom surface of the belt shoe (16) at the edge facing the milling roll (8).
EP99916834A 1998-03-30 1999-03-19 Device for milling off ground surfaces, especially roadways Expired - Lifetime EP1068398B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19814053A DE19814053B4 (en) 1998-03-30 1998-03-30 Apparatus for milling off floor surfaces, in particular roadways
DE19814053 1998-03-30
PCT/EP1999/001834 WO1999050504A1 (en) 1998-03-30 1999-03-19 Device for milling off ground surfaces, especially roadways

Publications (2)

Publication Number Publication Date
EP1068398A1 EP1068398A1 (en) 2001-01-17
EP1068398B1 true EP1068398B1 (en) 2005-09-14

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Application Number Title Priority Date Filing Date
EP99916834A Expired - Lifetime EP1068398B1 (en) 1998-03-30 1999-03-19 Device for milling off ground surfaces, especially roadways

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US (1) US6457779B1 (en)
EP (1) EP1068398B1 (en)
JP (1) JP4106183B2 (en)
AT (1) ATE304631T1 (en)
AU (1) AU755952B2 (en)
BR (1) BR9909188A (en)
DE (2) DE19814053B4 (en)
ES (1) ES2248996T3 (en)
NO (1) NO319428B1 (en)
WO (1) WO1999050504A1 (en)

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Also Published As

Publication number Publication date
WO1999050504A1 (en) 1999-10-07
DE19814053A1 (en) 1999-10-07
ES2248996T3 (en) 2006-03-16
NO319428B1 (en) 2005-08-08
NO20004656D0 (en) 2000-09-19
BR9909188A (en) 2000-12-05
DE59912560D1 (en) 2005-10-20
JP2002510000A (en) 2002-04-02
DE19814053B4 (en) 2007-07-26
AU3518599A (en) 1999-10-18
US6457779B1 (en) 2002-10-01
EP1068398A1 (en) 2001-01-17
JP4106183B2 (en) 2008-06-25
NO20004656L (en) 2000-11-24
ATE304631T1 (en) 2005-09-15
AU755952B2 (en) 2003-01-02

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