EP0920555B1 - Device for milling ground surfaces, specially roadways - Google Patents

Device for milling ground surfaces, specially roadways Download PDF

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Publication number
EP0920555B1
EP0920555B1 EP98928243A EP98928243A EP0920555B1 EP 0920555 B1 EP0920555 B1 EP 0920555B1 EP 98928243 A EP98928243 A EP 98928243A EP 98928243 A EP98928243 A EP 98928243A EP 0920555 B1 EP0920555 B1 EP 0920555B1
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EP
European Patent Office
Prior art keywords
conveyor means
conveyor
shoe
belt shoe
guiding
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EP98928243A
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German (de)
French (fr)
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EP0920555A1 (en
Inventor
Dieter Simons
Peter Busley
Herbert Ley
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Wirtgen GmbH
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Wirtgen GmbH
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Publication of EP0920555A1 publication Critical patent/EP0920555A1/en
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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 Floor surfaces, especially roadways, according to the generic term of claim 1.
  • Such devices are also called front loader milling designated.
  • a front loader milling machine is, for example known from DE-A 39 03 482 or DE-C 38 31 161.
  • the known milling machines have a self-propelled Chassis with a pair of front wheels and a pair of rear wheels on.
  • the chassis carries a machine frame, in which a milling drum is mounted transversely to the direction of travel. Around the most complete possible removal of the milled To reach the material, the milling drum is usually from surrounded in a housing in which the direction of travel Wall as a cover with an opening is designed for the milled material.
  • That from the Milling drum processed material is from the milling drum thrown onto a first conveyor belt that the processed Material at the front end of the milling machine Discharge belt transmits that to a loading area for transport of a truck in the inclination and pivotable sideways is.
  • the milling drum is equipped with chisel tools, one Form conveyor helix that the milled material for Transit opening of the cover plate transported.
  • the first conveyor belt in front of the milling drum can easily be due breaking floor plates are damaged, whereby the repair of the conveyor belt the expansion of the conveyor required. Removal and installation of the conveyor is very labor and time consuming. Furthermore will be several people performing this work needed.
  • the invention is therefore based on the object of a device of the type mentioned at the outset that on the one hand the conveyor better against damage is protected and on the other hand with the lowest personnel and time can be removed and installed.
  • the invention advantageously provides that milling drum-side end of the conveyor in a Machine frame with adjustable strap shoe is easily detachable, and that the strap shoe and Conveyor adapted guide and coupling devices exhibit.
  • the longitudinal section is roughly L-shaped band shoe has an easily removable storage for the rear end of the conveyor on and thus enables significantly shortened repair work Assembly and disassembly times for the conveyor.
  • the conveyor is better Floor surface and towards the milling drum against damage protected, so that to a lesser extent repair work attack.
  • the main advantages of the band shoe are on the one hand in protecting the conveyor against damage and on the other hand in integrated leadership the lower end of the conveyor.
  • the band shoe protects against damage to the conveyor belt Conveyor from below and from damage to the Conveyor belt through the given milling material by the band shoe prevents milled fragments between the conveyor belt and cover plate and there the conveyor belt at the deflection point of the conveyor belt can damage.
  • the band shoe consists of the vertical wall element with Passage opening, one at the lower end of the wall element rust protruding horizontally in the direction of travel, and running parallel to the conveyor, the grate bordering upstanding side walls, between which the milling drum end of the conveyor is pivotally mounted. While the vertical wall element the band shoe has the function of a vertical shield, the grate serves as a support, slide and hold-down element, that rests on the floor surface. Allow the side walls a guide and storage of the rear, milling drum-side End of the conveyor.
  • the conveyor pivotable between the side walls of the Band shoes stored.
  • a passage opening in a vertical wall element of the band shoe works with the opening of the cover plate together.
  • the passage opening depending Band shoe adjustable in height from the milling depth is always in the same relative to the conveyor Position so that for the removal of the milled material optimal conditions exist through the conveyor.
  • the guiding and coupling device of the conveyor consist, for example, of protruding to the side Guide bolts that allow the conveyor to pivot allow.
  • the conveyor can be at an angle to Horizontal run upwards, with the guide devices of the band shoe on the side walls from under the angle of inclination of the conveying guide elements consist.
  • the guiding device of the band shoe thus form an extension of the management facilities of the machine frame for the conveyor.
  • the side walls on the end of the guide elements receiving devices on the milling drum side for the guide bolts of the conveyor have in which the guide bolts can be locked and at the same time as an end stop for the conveyor serve.
  • the band shoe thus also serves as Guiding and locking device.
  • the conveyor can be moved in the Band shoe be guided and stored and by means of a Tension spring against a stop on the strap shoe in the direction of the milling drum be biased.
  • the band shoe points a longitudinal bearing.
  • the Guide elements of the side walls from one at the angle of inclination the conveyor surface running guide surface on the top edge of the side walls.
  • the guide bolts the conveyor can on these guide surfaces in the stop and locking position on the strap shoe slide.
  • the guide surfaces support the band shoe the rear end of the conveyor at Pull out of the machine frame until the Conveyor sufficient from the machine frame is supported.
  • the guide elements on the side walls adapted from the guide bolts of the conveyor Rails or grooves exist at the angle of inclination the conveyor run.
  • the machine frame has one at the angle of inclination the conveyor running shaft in which the Conveyor using a pair of rails and rollers is insertable into the repository on the band shoe. Are there the rails preferably on the shaft of the machine frame and the guide rollers are arranged on the conveyor.
  • the support rollers or the guide rollers are in the end position of the conveyor in the band shoe no longer on the guide rails in the shaft of the machine frame on.
  • the band shoe has a bow-shaped on its front Sign on the band shoe from damage protects.
  • Stiffening ribs can be provided to the band shoe give a high stability and the grate bars of the Connect the grate to one another.
  • the conveyor has on its front, the milling drum opposite end two more protruding laterally Guide bolts on the shaft in a longitudinal bearing are insertable when the guide means in the band shoe is introduced. This is the conveyor raised so that the guide rollers of the conveyor no longer on the guide rails in the shaft of the Machine frame.
  • the longitudinal bearing also leaves one limited movement of the conveyor to, for example, if the conveyor using a tension spring is held against a stop in the band shoe or if the conveyor as a result of a milling depth adjustment is adjusted.
  • a chassis 4 which carries a machine frame 6 and a milling drum 8 mounted on the machine frame 6, the crossways to the direction of travel between the rear wheels 5 of the chassis 4 extends is shown in Fig. 1.
  • the milling depth is set using the height adjustment of rear wheels 5.
  • Such machines also known as a front loader milling machine because it Milled material in the direction of travel forward on transport vehicles transport.
  • a first conveyor 10 with a Conveyor belt 12 arranged at an angle of inclination is arranged in the machine frame 6 and the milled Material on a second conveyor 14 with transfers another conveyor belt 15.
  • the second Transport device 14 has an adjustable angle of inclination adjustable in height and can also be adjusted laterally be pivoted, for example, ⁇ 30 °, so that next to transport vehicles standing in the lane of the front loader milling machine can be loaded.
  • the milling drum 8 in the Usually surrounded by a housing in which the direction of travel facing wall as cover plate 20 with passage opening 22 is formed for the milled material.
  • the passage opening 22 also has relative to the milling drum 8 with different milling depth settings always the same position.
  • the milling drum 8 is with helically arranged chisel tools provided, which are arranged so that the milled Material for the passage opening 22 in the cover plate 20 is transported.
  • a band shoe 16 is in a vertical guide on the machine frame 6 26,27 guided height adjustable attached.
  • the Vertical guidance consists of a vertical of the machine frame 6 downward protruding sheet 27, which between a side wall element 29 of the band shoe 16 and one the vertical guide element attached to the wall element 21 26 engages.
  • a piston-cylinder unit attached to the machine frame 6 17 provided. With the help of this piston-cylinder unit the strap shoe can be lifted in the vertical direction to overcome obstacles, for example. there the strap shoe 16 cannot be pressed down, but only be raised when necessary. When increasing the The position of the band shoe 16 assumes the milling depth the ground contact automatically.
  • the band shoe 16 takes the end of the milling drum Conveyor 10 on and up to an end stop position in the band shoe where the lower end of the conveyor swiveling, is mounted. It can be provided be that the conveyor 10 along guide means 40 in the longitudinal direction of the conveyor device 10 remains flexible. The conveyor 10 remains due the dead weight in the end position in the band shoe 16, but can also be fixed or with a Tension spring 62 held under prestress against the stop become.
  • the band shoe 16 consists of a vertical on which Cover plate 20 adjacent wall element 21 with a Passage opening 23, one at the lower end of the wall element 21 grating 28 protruding horizontally in the direction of travel, and parallel to the conveyor 10, after protruding side walls 32, between which the milling drum side End of the conveyor 10 pivotable is stored.
  • the passage opening 23 of the wall element 21 cooperates the passage opening 22 of the cover plate 20 such together that the height of the passage openings for the milled material always constant and independent of the Milling depth remains, with the passage opening 23 of the Wall element 21 which is constant according to the milling depth Passage height relative to the conveyor ensures.
  • the guiding and coupling device of the conveyor 10 preferably consists of laterally and transversely Direction protruding guide pin 36, the Guide devices 40, 44 of the band shoe 16 are adapted are.
  • the band shoe 16 has one as a guide device the inclination angle of the conveyor 10 extending Guide surface 40, the length of which is dimensioned such that for example when dismantling the conveyor, this is supported at least as long at the rear end, until other support elements in a shaft 46 of the machine frame 6 are engaged.
  • a bolt receptacle 44 made of an approximately semicircular Cutout arranged as an end stop for the conveyor 10 serves.
  • Deviating from the depiction in FIGS. 2a and 3 can the bolt receptacle 44 from a longer, parallel to the Guide surface 40 extending groove open on one side exist so that a longitudinal guide of the guide pin 36th is possible without the conveyor in the horizontal direction can take off. Since the guide pin 36 is round Have cross-sectional shape, the guide device 10, e.g. when changing the milling depth relative to the belt shoe 16 can be pivoted.
  • the guide bolts 36 can be on the bolt receptacle 44 secured by washers 47 on the guide bolts 36 are pushed on and with screws 45 over or screwed to the band shoe 16 under the bolt receptacle 44 become.
  • guide surfaces 40 can be on the side walls 32 of the band shoe 16 rails or grooves for receiving the guide pin 26 may be provided.
  • the lower end of the conveyor 10 can with the help a tension spring 62 in the end position of the pin receptacle 44 are held, the conveyor 10 being longitudinally displaceable rests on the guide surfaces 40.
  • the grate 28 of the band shoe 16 can, depending on the training as Hold down or serve as a sliding shoe. Inside the Band shoes can run transversely to the side walls 32 Stiffening ribs 70 may be provided to support the load the band shoe 16 to increase and around the grate bars 71 to hold the grate.
  • Rails 52 are in the shaft 46 of the machine frame 6 to guide the conveyor 10 during assembly and Disassembly arranged with guide rollers 54 of the conveyor 10 cooperate. Which are across the conveyor 10 extending guide rollers 54 serve at the same time as support rollers for the lower run 58 of the Conveyor belt 12 of the conveyor 10. There are a total three support rollers 54 on the underside of the conveyor 10 arranged, the distance is selected so that the conveyor 10 when inserted into the Chute 46 of the machine frame guided at least as long is until the rear guide pin 36 on the guide surfaces 40 rest on the upper edges of the side walls 32.
  • longitudinal bearings 48 can be inserted if the Guide device 10 is inserted into the band shoe 16.
  • the longitudinal bearings 48 allow the conveyor to pivot as part of the height adjustment of the band shoe and enable length compensation.
  • raise the conveyor 10 so that the backup rollers 54 are lifted off the rails 52 so that they to support the lower run 58 of the conveyor belt 12 can rotate freely.
  • the conveyor 10 can due to the quick-release Storage on the band shoe 16 and those provided in the shaft 46 Guided tours by a single person with the help of a crane can be installed and removed. Since the leadership and coupling device on the band shoe 16 a quick Assembly or disassembly of the rear end of the conveyor allow repairs and maintenance performed by just one person in a very short time become.

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 Floor surfaces, especially roadways, according to the generic term of claim 1.

Derartige Vorrichtungen werden auch als Frontladerfräsen bezeichnet. Eine derartige Frontladerfräse ist beispielsweise aus der DE-A 39 03 482 oder der DE-C 38 31 161 bekannt. 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 called front loader milling designated. Such a front loader milling machine is, for example known from DE-A 39 03 482 or DE-C 38 31 161. The known milling machines have a self-propelled Chassis with a pair of front wheels and a pair of rear wheels on. The chassis carries a machine frame, in which a milling drum is mounted transversely to the direction of travel. Around the most complete possible removal of the milled To reach the material, the milling drum is usually from surrounded in a housing in which the direction of travel Wall as a cover with an opening is designed for the milled material. That from the Milling drum processed material is from the milling drum thrown onto a first conveyor belt that the processed Material at the front end of the milling machine Discharge belt transmits that to a loading area for transport of a truck in the inclination and pivotable sideways is.

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, one Form conveyor helix that the milled material for Transit opening of the cover plate transported.

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 easily be due breaking floor plates are damaged, whereby the repair of the conveyor belt the expansion of the conveyor required. Removal and installation of the conveyor is very labor and time consuming. Furthermore will be several people performing this work needed.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art weiterzubilden, daß einerseits die Fördereinrichtung besser gegen Beschädigungen geschützt ist und andererseits mit geringstem Personal- und Zeitaufwand aus- und einbaubar ist.The invention is therefore based on the object of a device of the type mentioned at the outset that on the one hand the conveyor better against damage is protected and on the other hand with the lowest personnel and time can be removed and installed.

Zur Lösung dieser Aufgabe dienen die Merkmale des Anspruchs 1.The features of the claim serve to solve this problem 1.

Die Erfindung sieht in vorteilhafter Weise vor, daß das fräswalzenseitige Ende der Fördereinrichtung in einem am Maschinenrahmen höhenverstellbar befestigten Bandschuh leicht lösbar gelagert ist, und daß der Bandschuh und die Fördereinrichtung einander angepaßte Führungs- und Kopplungseinrichtungen aufweisen. Der im Längsschnitt in etwa L-förmige Bandschuh weist eine leicht demontierbare Lagerung für das hintere Ende der Fördereinrichtung auf und ermöglicht dadurch bei Reparaturarbeiten erheblich verkürzte Montage- und Demontagezeiten für die Fördereinrichtung. Gleichzeitig wird die Fördereinrichtung besser zur Bodenoberfläche und zur Fräswalze hin gegen Beschädigung geschützt, so daß im geringeren Umfang Reparaturarbeiten anfallen. Die wesentlichen Vorteile des Bandschuhs liegen einerseits in dem Schutz der Fördereinrichtung vor Beschädigung und andererseits in der integrierten Führung des unteren Endes der Fördereinrichtung. Der Bandschuh schützt zugleich vor Beschädigung des Transportbandes der Fördereinrichtung von unten als auch vor Beschädigung des Transportbandes durch das aufgegebene Fräsmaterial, indem der Bandschuh verhindert, daß abgefräste Bruchstücke zwischen Transportband und Abdeckschild geraten und dort an der Umlenkstelle des Transportbandes das Transportband beschädigen können.The invention advantageously provides that milling drum-side end of the conveyor in a Machine frame with adjustable strap shoe is easily detachable, and that the strap shoe and Conveyor adapted guide and coupling devices exhibit. The longitudinal section is roughly L-shaped band shoe has an easily removable storage for the rear end of the conveyor on and thus enables significantly shortened repair work Assembly and disassembly times for the conveyor. At the same time, the conveyor is better Floor surface and towards the milling drum against damage protected, so that to a lesser extent repair work attack. The main advantages of the band shoe are on the one hand in protecting the conveyor against damage and on the other hand in integrated leadership the lower end of the conveyor. The band shoe protects against damage to the conveyor belt Conveyor from below and from damage to the Conveyor belt through the given milling material by the band shoe prevents milled fragments between the conveyor belt and cover plate and there the conveyor belt at the deflection point of the conveyor belt can damage.

Der Bandschuh besteht aus dem vertikalen Wandelement mit Durchtrittsöffnung, einem am unteren Ende des Wandelementes in Fahrtrichtung horizontal abstehenden Rost, sowie parallel zur Fördereinrichtung verlaufenden, den Rost einfassenden nach oben abstehenden Seitenwänden, zwischen denen das fräswalzenseitige Ende der Fördereinrichtung schwenkbar gelagert ist. Während das vertikale Wandelement des Bandschuhs die Funktion eines vertikalen Schildes hat, dient der Rost als Stütz-, Gleit- und Niederhalteelement, das auf der Bodenfläche aufliegt. Die Seitenwände ermöglichen eine Führung und Lagerung des hinteren, fräswalzenseitigen Endes der Fördereinrichtung. Dabei ist die Fördereinrichtung schwenkbar zwischen den Seitenwänden des Bandschuhs gelagert.The band shoe consists of the vertical wall element with Passage opening, one at the lower end of the wall element rust protruding horizontally in the direction of travel, and running parallel to the conveyor, the grate bordering upstanding side walls, between which the milling drum end of the conveyor is pivotally mounted. While the vertical wall element the band shoe has the function of a vertical shield, the grate serves as a support, slide and hold-down element, that rests on the floor surface. Allow the side walls a guide and storage of the rear, milling drum-side End of the conveyor. Here is the conveyor pivotable between the side walls of the Band shoes stored.

Eine Durchtrittsöffnung in einem vertikalen Wandelement des Bandschuhs wirkt mit der Durchtrittsöffnung des Abdeckschildes zusammen. Die Durchtrittsöffnung des in Abhängigkeit von der Frästiefe höhenverstellbaren Bandschuhs ist relativ zu der Fördereinrichtung stets in der gleichen Lage, so daß für den Abtransport des abgefrästen Materials durch die Fördereinrichtung optimale Bedingungen bestehen.A passage opening in a vertical wall element of the band shoe works with the opening of the cover plate together. The passage opening depending Band shoe adjustable in height from the milling depth is always in the same relative to the conveyor Position so that for the removal of the milled material optimal conditions exist through the conveyor.

Die Führungs- und Kopplungseinrichtung der Fördereinrichtung bestehen beispielsweise aus seitlich überstehenden Führungsbolzen, die eine Schwenkbarkeit der Fördereinrichtung zulassen.The guiding and coupling device of the conveyor consist, for example, of protruding to the side Guide bolts that allow the conveyor to pivot allow.

Die Fördereinrichtung kann unter einem Neigungswinkel zur Horizontalen nach oben verlaufen, wobei die Führungseinrichtungen des Bandschuhs an den Seitenwänden aus unter dem Neigungswinkel der Fördereinrichtung verlaufenden Führungselementen bestehen. Die Führungseinrichtung des Bandschuhs bilden somit eine Verlängerung der Führungseinrichtungen des Maschinenrahmens für die Fördereinrichtung.The conveyor can be at an angle to Horizontal run upwards, with the guide devices of the band shoe on the side walls from under the angle of inclination of the conveying guide elements consist. The guiding device of the band shoe thus form an extension of the management facilities of the machine frame for the conveyor.

Vorzugsweise ist vorgesehen, daß die Seitenwände an dem fräswalzenseitigen Ende der Führungselemente Aufnahmeeinrichtungen für die Führungsbolzen der Fördereinrichtung aufweisen, in denen die Führungsbolzen arretierbar sind und die gleichzeitig als Endanschlag für die Fördereinrichtung dienen. Der Bandschuh dient somit zugleich als Führungs- und Verriegelungseinrichtung.It is preferably provided that the side walls on the end of the guide elements receiving devices on the milling drum side for the guide bolts of the conveyor have in which the guide bolts can be locked and at the same time as an end stop for the conveyor serve. The band shoe thus also serves as Guiding and locking device.

Alternativ kann die Fördereinrichtung beweglich in dem Bandschuh geführt und gelagert sein und mittels einer Zugfeder gegen einen Anschlag am Bandschuh in Richtung auf die Fräswalze vorgespannt sein. Hierzu weist der Bandschuh ein Längslager auf.Alternatively, the conveyor can be moved in the Band shoe be guided and stored and by means of a Tension spring against a stop on the strap shoe in the direction of the milling drum be biased. To this end, the band shoe points a longitudinal bearing.

Bei einem bevorzugten Ausführungsbeispiel bestehen die Führungselemente der Seitenwände aus einer unter dem Neigungswinkel der Fördereinrichtung verlaufenden Führungsfläche an der Oberkante der Seitenwände. Die Führungsbolzen der Fördereinrichtung können auf diesen Führungsflächen in die Anschlag- und Arretierposition an dem Bandschuh gleiten. Andererseits stützen die Führungsflächen an dem Bandschuh das hintere Ende der Fördereinrichtung beim Herausziehen aus dem Maschinenrahmen so lange ab, bis die Fördereinrichtung ausreichend von dem Maschinenrahmen gestützt wird.In a preferred embodiment, the Guide elements of the side walls from one at the angle of inclination the conveyor surface running guide surface on the top edge of the side walls. The guide bolts the conveyor can on these guide surfaces in the stop and locking position on the strap shoe slide. On the other hand, the guide surfaces support the band shoe the rear end of the conveyor at Pull out of the machine frame until the Conveyor sufficient from the machine frame is supported.

Alternativ können die Führungselemente an den Seitenwänden aus den Führungsbolzen der Fördereinrichtung angepaßten Schienen oder Nuten bestehen, die unter dem Neigungswinkel der Fördereinrichtung verlaufen.Alternatively, the guide elements on the side walls adapted from the guide bolts of the conveyor Rails or grooves exist at the angle of inclination the conveyor run.

Der Maschinenrahmen weist einen unter dem Neigungswinkel der Fördereinrichtung verlaufenden Schacht auf, in dem die Fördereinrichtung mit Hilfe einer Schienen-Rollenpaarung in die Endlager am Bandschuh einführbar ist. Dabei sind die Schienen vorzugsweise an dem Schacht des Maschinenrahmens und die Führungsrollen an der Fördereinrichtung angeordnet.The machine frame has one at the angle of inclination the conveyor running shaft in which the Conveyor using a pair of rails and rollers is insertable into the repository on the band shoe. Are there the rails preferably on the shaft of the machine frame and the guide rollers are arranged on the conveyor.

Besonders bevorzugt werden die axial äußeren Bereiche der Stützwalzen für den unteren Trum eines Transportbandes der Fördereinrichtung gleichzeitig als Führungsrollen für die Fördereinrichtung verwendet.The axially outer regions of the Support rollers for the lower run of a conveyor belt Conveyor at the same time as leadership roles for the Conveyor used.

Dabei liegen die Stützwalzen bzw. die Führungsrollen in der Endposition der Fördereinrichtung in dem Bandschuh nicht mehr auf den Führungsschienen im Schacht des Maschinenrahmens auf. The support rollers or the guide rollers are in the end position of the conveyor in the band shoe no longer on the guide rails in the shaft of the machine frame on.

Der Bandschuh weist an seiner Vorderseite ein schiffsbugförmiges Schild auf, das den Bandschuh vor Beschädigungen schützt.The band shoe has a bow-shaped on its front Sign on the band shoe from damage protects.

In dem Bandschuh können quer zu den Seitenwänden verlaufende Versteifungsrippen vorgesehen sein, die dem Bandschuh eine hohe Stabilität geben und die Roststäbe des Rostes untereinander verbinden.In the band shoe can run transversely to the side walls Stiffening ribs can be provided to the band shoe give a high stability and the grate bars of the Connect the grate to one another.

Die Fördereinrichtung weist an ihrem vorderen, der Fräswalze abgewandten Ende zwei weitere seitlich überstehende Führungsbolzen auf, die in dem Schacht in ein Längslager einführbar sind, wenn die Führungseinrichtung in den Bandschuh eingeführt ist. Dabei wird die Fördereinrichtung angehoben, so daß die Führungsrollen der Fördereinrichtung nicht mehr auf den Führungsschienen in dem Schacht des Maschinenrahmens aufliegen. Das Längslager läßt auch eine begrenzte Bewegung der Fördereinrichtung zu, beispielsweise, wenn die Fördereinrichtung mit Hilfe einer Zugfeder gegen einen Anschlag im Bandschuh gehalten wird oder wenn die Fördereinrichtung infolge einer Frästiefenverstellung verstellt wird.The conveyor has on its front, the milling drum opposite end two more protruding laterally Guide bolts on the shaft in a longitudinal bearing are insertable when the guide means in the band shoe is introduced. This is the conveyor raised so that the guide rollers of the conveyor no longer on the guide rails in the shaft of the Machine frame. The longitudinal bearing also leaves one limited movement of the conveyor to, for example, if the conveyor using a tension spring is held against a stop in the band shoe or if the conveyor as a result of a milling depth adjustment is adjusted.

Im folgenden wird unter Bezugnahme auf die Zeichnungen ein Ausführungsbeispiel der Erfindung näher erläutert.The following is a reference to the drawings Embodiment of the invention explained in more detail.

Es zeigen:

Fig. 1
eine erfindungsgemäße Vorrichtung zum Abfräsen von Bodenoberflächen,
Fig. 2a
eine schematische Darstellung der Position des Bandschuhs innerhalb des Maschinenrahmens relativ zur Fräswalze,
Fig. 2b
eine Fördereinrichtung mit Transportband, die in den Bandschuh einführbar ist,
Fig. 3
eine Zwischenposition bei der Montage der Fördereinrichtung,
Fig. 4
die Fördereinrichtung in einer Endposition im Bandschuh, und
Fig. 5
eine Draufsicht entlang der Linie V-V in Fig. 4.
Show it:
Fig. 1
a device according to the invention for milling off floor surfaces,
Fig. 2a
1 shows a schematic representation of the position of the belt shoe within the machine frame relative to the milling drum,
Fig. 2b
a conveyor with a conveyor belt that can be inserted into the belt shoe,
Fig. 3
an intermediate position during the assembly of the conveyor,
Fig. 4
the conveyor in an end position in the band shoe, and
Fig. 5
4 shows a plan view along the line VV in FIG. 4.

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 zwischen den Hinterrädern 5 des Fahrwerks 4 erstreckt, ist in Fig. 1 gezeigt. Die Einstellung der Frästiefe erfolgt mit Hilfe der Höhenverstellung der Hinterräder 5. 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 dem Maschinenrahmen 6 angeordnet ist und das abgefräste Material auf eine zweite Förderereinrichtung 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. A device for milling off floor surfaces 2, especially 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, the crossways to the direction of travel between the rear wheels 5 of the chassis 4 extends is shown in Fig. 1. The The milling depth is set using the height adjustment of rear wheels 5. Such machines also known as a front loader milling machine because it Milled material in the direction of travel forward on transport vehicles transport. In the direction of travel before Milling drum 8 is a first conveyor 10 with a Conveyor belt 12 arranged at an angle of inclination is arranged in the machine frame 6 and the milled Material on a second conveyor 14 with transfers another conveyor belt 15. The second Transport device 14 has an adjustable angle of inclination adjustable in height and can also be adjusted laterally be pivoted, for example, ± 30 °, so that next to transport vehicles standing in the lane of the front loader milling machine can be loaded.

Um einen möglichst vollständigen Abtransport des abgefrästen Materials zu erreichen, ist die Fräswalze 8 in der Regel von einem Gehäuse umgeben, bei dem die in Fahrtrichtung weisende Wand als Abdeckschild 20 mit Durchtrittsöffnung 22 für das abgefräste Material ausgebildet ist. Die Durchtrittsöffnung 22 hat relativ zur Fräswalze 8 auch bei unterschiedlichen Frästiefeneinstellung stets die gleiche Position.To ensure that the milled is removed as completely as possible To achieve material, the milling drum 8 in the Usually surrounded by a housing in which the direction of travel facing wall as cover plate 20 with passage opening 22 is formed for the milled material. The passage opening 22 also has relative to the milling drum 8 with different milling depth settings 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 Abdeckschild 20 transportiert wird.The milling drum 8 is with helically arranged chisel tools provided, which are arranged so that the milled Material for the passage opening 22 in the cover plate 20 is transported.

Am Maschinenrahmen 6 ist ein Bandschuh 16 in einer Vertikalführung 26,27 geführt höhenverstellbar befestigt. Die Vertikalführung besteht aus einem vertikal von dem Maschinenrahmen 6 nach unten abstehenden Blech 27, das zwischen einem Seitenwandelement 29 des Bandschuhs 16 und einem an dem Wandelement 21 befestigten vertikalen Führungselement 26 eingreift. Zur Höhenverstellung des Bandschuhs 16 ist eine an dem Maschinenrahmen 6 befestigte Kolbenzylindereinheit 17 vorgesehen. Mit Hilfe dieser Kolbenzylindereinheit 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.A band shoe 16 is in a vertical guide on the machine frame 6 26,27 guided height adjustable attached. The Vertical guidance consists of a vertical of the machine frame 6 downward protruding sheet 27, which between a side wall element 29 of the band shoe 16 and one the vertical guide element attached to the wall element 21 26 engages. For the 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 the strap shoe can be lifted in the vertical direction to overcome obstacles, for example. there the strap shoe 16 cannot be pressed down, but only be raised when necessary. When increasing the The position of the band shoe 16 assumes the milling depth the ground contact automatically.

Der Bandschuh 16 nimmt das fräswalzenseitige Ende der Fördereinrichtung 10 auf und bis in eine Endanschlags-position in dem Bandschuh, wo das untere Ende der Fördereinrichtung schwenkbar, gelagert ist. Dabei kann vorgesehen sein, daß die Fördereinrichtung 10 längs von Führungseinrichtungen 40 in Längsrichtung der Fördereinrichtung 10 beweglich bleibt. Die Fördereinrichtung 10 verbleibt aufgrund des Eigengewichts in der Endposition im Bandschuh 16, kann aber zusätzlich fixiert werden oder mit einer Zugfeder 62 unter Vorspannung gegen den Anschlag gehalten werden.The band shoe 16 takes the end of the milling drum Conveyor 10 on and up to an end stop position in the band shoe where the lower end of the conveyor swiveling, is mounted. It can be provided be that the conveyor 10 along guide means 40 in the longitudinal direction of the conveyor device 10 remains flexible. The conveyor 10 remains due the dead weight in the end position in the band shoe 16, but can also be fixed or with a Tension spring 62 held under prestress against the stop become.

Der Bandschuh 16 besteht aus einem vertikalen, an dem Abdeckschild 20 anliegenden Wandelement 21 mit einer Durchtrittsöffnung 23, einem am unteren Ende des Wandelementes 21 in Fahrtrichtung horizontal abstehenden Rost 28, sowie parallel zur Fördereinrichtung 10 verlaufenden, nach oben abstehenden Seitenwände 32, zwischen denen das fräswalzenseitige Ende der Fördereinrichtung 10 schwenkbar gelagert ist.The band shoe 16 consists of a vertical on which Cover plate 20 adjacent wall element 21 with a Passage opening 23, one at the lower end of the wall element 21 grating 28 protruding horizontally in the direction of travel, and parallel to the conveyor 10, after protruding side walls 32, between which the milling drum side End of the conveyor 10 pivotable is stored.

Die Durchtrittsöffnung 23 des Wandelementes 21 wirkt mit der Durchtrittsöffnung 22 des Abdeckschildes 20 derart zusammen, daß die Höhe der Durchtrittsöffnungen für das abgefräste Material stets konstant und unabhängig von der Frästiefe bleibt, wobei die Durchtrittsöffnung 23 des Wandelementes 21 die entsprechend der Frästiefe konstante Durchtrittshöhe relativ zu der Fördereinrichtung sicherstellt.The passage opening 23 of the wall element 21 cooperates the passage opening 22 of the cover plate 20 such together that the height of the passage openings for the milled material always constant and independent of the Milling depth remains, with the passage opening 23 of the Wall element 21 which is constant according to the milling depth Passage height relative to the conveyor ensures.

Die Führungs- und Kopplungseinrichtung der Fördereinrichtung 10 besteht vorzugsweise aus seitlich und quer zur Fahrtrichtung überstehenden Führungsbolzen 36, die den Führungseinrichtungen 40,44 des Bandschuhs 16 angepaßt sind.The guiding and coupling device of the conveyor 10 preferably consists of laterally and transversely Direction protruding guide pin 36, the Guide devices 40, 44 of the band shoe 16 are adapted are.

Der Bandschuh 16 weist als Führungseinrichtung eine unter dem Neigungswinkel der Fördereinrichtung 10 verlaufende Führungsfläche 40 auf, deren Länge so bemessen ist, daß beispielsweise bei der Demontage der Fördereinrichtung, diese zumindest so lange am hinteren Ende abgestützt ist, bis andere Stützelemente in einem Schacht 46 des Maschinenrahmens 6 im Eingriff sind.The band shoe 16 has one as a guide device the inclination angle of the conveyor 10 extending Guide surface 40, the length of which is dimensioned such that for example when dismantling the conveyor, this is supported at least as long at the rear end, until other support elements in a shaft 46 of the machine frame 6 are engaged.

An dem der Fräswalze 8 zugewandten Ende der Führungsfläche 40 ist eine Bolzenaufnahme 44 aus einer in etwa halbkreisförmigen Aussparung angeordnet, die als Endanschlag für die Fördereinrichtung 10 dient.At the end of the guide surface facing the milling drum 8 40 is a bolt receptacle 44 made of an approximately semicircular Cutout arranged as an end stop for the conveyor 10 serves.

Abweichend von der Darstellung in den Fign. 2a und 3 kann die Bolzenaufnahme 44 aus einer längeren, parallel zu der Führungsfläche 40 verlaufenden, einseitig offenen Nut bestehen, so daß eine Längsführung der Führungsbolzen 36 möglich ist, ohne daß die Fördereinrichtung in Horizontalrichtung abheben kann. Da die Führungsbolzen 36 eine runde Querschnittsform haben, kann die Führungseinrichtung 10, z.B. bei Änderung der Frästiefe relativ zum dem Bandschuh 16 verschwenkt werden.Deviating from the depiction in FIGS. 2a and 3 can the bolt receptacle 44 from a longer, parallel to the Guide surface 40 extending groove open on one side exist so that a longitudinal guide of the guide pin 36th is possible without the conveyor in the horizontal direction can take off. Since the guide pin 36 is round Have cross-sectional shape, the guide device 10, e.g. when changing the milling depth relative to the belt shoe 16 can be pivoted.

Die Führungsbolzen 36 können an der Bolzenaufnahme 44 gesichert werden, indem Scheiben 47 auf die Führungsbolzen 36 aufgeschoben werden und mit Schrauben 45 über bzw. unter der Bolzenaufnahme 44 mit dem Bandschuh 16 verschraubt werden.The guide bolts 36 can be on the bolt receptacle 44 secured by washers 47 on the guide bolts 36 are pushed on and with screws 45 over or screwed to the band shoe 16 under the bolt receptacle 44 become.

Alternativ zu den Führungsflächen 40 können an den Seitenwänden 32 des Bandschuhs 16 Schienen oder Nuten zur Aufnahme der Führungsbolzen 26 vorgesehen sein.As an alternative to the guide surfaces 40, can be on the side walls 32 of the band shoe 16 rails or grooves for receiving the guide pin 26 may be provided.

Das untere Ende der Fördereinrichtung 10 kann mit Hilfe einer Zugfeder 62 in der Endposition der Bolzenaufnahme 44 gehalten werden, wobei die Fördereinrichtung 10 längsverschiebbar auf den Führungsflächen 40 aufliegt.The lower end of the conveyor 10 can with the help a tension spring 62 in the end position of the pin receptacle 44 are held, the conveyor 10 being longitudinally displaceable rests on the guide surfaces 40.

Der Rost 28 des Bandschuhs 16 kann je nach Ausbildung als Niederhalter oder als Gleitschuh dienen. Im Inneren des Bandschuhs können quer zu den Seitenwänden 32 verlaufende Versteifungsrippen 70 vorgesehen sein, um die Belastungsfähigkeit des Bandschuhs 16 zu erhöhen und um die Roststäbe 71 des Rostes zu halten.The grate 28 of the band shoe 16 can, depending on the training as Hold down or serve as a sliding shoe. Inside the Band shoes can run transversely to the side walls 32 Stiffening ribs 70 may be provided to support the load the band shoe 16 to increase and around the grate bars 71 to hold the grate.

In dem Schacht 46 des Maschinenrahmens 6 sind Schienen 52 zur Führung der Fördereinrichtung 10 bei der Montage und Demontage angeordnet, die mit Führungsrollen 54 der Fördereinrichtung 10 zusammenwirken. Die sich quer zur Fördereinrichtung 10 erstreckenden Führungsrollen 54 dienen gleichzeitig als Stützwalzen für den unteren Trum 58 des Transportbandes 12 der Fördereinrichtung 10. Es sind insgesamt drei Stützwalzen 54 auf der Unterseite der Fördereinrichtung 10 angeordnet, deren Abstand so gewählt ist, daß die Fördereinrichtung 10 beim Einschieben in den Schacht 46 des Maschinenrahmens zumindest so lange geführt ist, bis die hinteren Führungsbolzen 36 auf den Führungsflächen 40 an den Oberkanten der Seitenwände 32 aufliegen. Am vorderen Ende der Fördereinrichtung 10 sind weitere seitlich überstehende Führungsbolzen 38 vorgesehen, die in dem Schacht 46 in beiderseits der Fördereinrichtung 10 angeordneten Längslagern 48 einführbar sind, wenn die Führungseinrichtung 10 in dem Bandschuh 16 eingeführt ist. Die Längslager 48 lassen ein Verschwenken der Fördereinrichtung im Rahmen der Höhenverstellung des Bandschuhs zu und ermöglichen dabei den Längenausgleich. Gleichzeitig heben sie die Fördereinrichtung 10 so an, daß die Stützwalzen 54 von den Schienen 52 abgehoben werden, so daß sie sich zur Stützung des unteren Trums 58 des Transportbandes 12 frei drehen können. Rails 52 are in the shaft 46 of the machine frame 6 to guide the conveyor 10 during assembly and Disassembly arranged with guide rollers 54 of the conveyor 10 cooperate. Which are across the conveyor 10 extending guide rollers 54 serve at the same time as support rollers for the lower run 58 of the Conveyor belt 12 of the conveyor 10. There are a total three support rollers 54 on the underside of the conveyor 10 arranged, the distance is selected so that the conveyor 10 when inserted into the Chute 46 of the machine frame guided at least as long is until the rear guide pin 36 on the guide surfaces 40 rest on the upper edges of the side walls 32. At the front end of the conveyor 10 are more laterally protruding guide pin 38 provided in the shaft 46 in the conveyor 10 on both sides arranged longitudinal bearings 48 can be inserted if the Guide device 10 is inserted into the band shoe 16. The longitudinal bearings 48 allow the conveyor to pivot as part of the height adjustment of the band shoe and enable length compensation. At the same time raise the conveyor 10 so that the backup rollers 54 are lifted off the rails 52 so that they to support the lower run 58 of the conveyor belt 12 can rotate freely.

Die Fördereinrichtung 10 kann aufgrund der schnellösbaren Lagerung an dem Bandschuh 16 und den im Schacht 46 vorgesehenen Führungen von einer einzigen Person mit Hilfe eines Kranes ein- und ausgebaut werden. Da die Führungs- und Kopplungseinrichtung an dem Bandschuh 16 eine schnelle Montage oder Demontage des hinteren Endes der Fördereinrichtung zulassen, können Reparaturen und Wartungsarbeiten in sehr kurzer Zeit von nur einer Person durchgeführt werden.The conveyor 10 can due to the quick-release Storage on the band shoe 16 and those provided in the shaft 46 Guided tours by a single person with the help of a crane can be installed and removed. Since the leadership and coupling device on the band shoe 16 a quick Assembly or disassembly of the rear end of the conveyor allow repairs and maintenance performed by just one person in a very short time become.

Claims (15)

  1. Device for milling off ground surfaces (2), especially roadways, having a wheel frame (4) carrying a machine frame (6), a milling roller (8) supported in the machine frame (6) and extending transversely to the direction of travel, at least one conveyor means (10) arranged in front of the milling roller (8) in the direction of travel for removing the milled material, and having a shield arrangement (18) extending transversely to the direction of travel between the milling roller (8) and the conveyor means (10), having a vertical cover plate (20) with a passage opening (22) for the milled material, characterized in that the end, on the side of the milling roller, of the conveyor means (10) is dismountably supported in a belt shoe (16) that is approximately L-shaped in longitudinal section and fixed to the machine frame (6) in a height-adjustable manner, and that the belt shoe (16) and the conveyor means (10) comprise guiding means (36, 40, 44) adapted to one another, said guiding means guiding the conveyor means (10) in the longitudinal direction in the belt shoe during the mounting or dismantling thereof, the belt shoe and the conveyor means further comprising coupling means adapted to one another which retain the conveyor means (10) in the belt shoe (16).
  2. Device according to claim 1, characterized in that the belt shoe (16) of the vertical wall element (21) consists of the vertical wall element (21) having a passage opening (23), a grate (28) horizontal on the lower end of the wall element (21) in the direction of travel as well as lateral walls (32) extending parallel to the conveyor means (10), enclosing the grate (28) and projecting upwards, the end, on the side of the mill roller, of the conveyor means (10) being supported pivotably therebetween.
  3. Device according to claim 1 or 2, characterized in that a passage opening (23) in a vertical wall element (21) of the belt shoe (16), abutting on the cover plate (20), co-operates with the passage opening (22) of the cover plate (20) on the milling roller (8).
  4. Device according to any one of claims 1 to 3, characterized in that the guiding and coupling means of the conveyor means (10) consist of laterally projecting guide bolts (36).
  5. Device according to any one of claims 1 to 4, characterized in that the conveyor means (10) extends upwards at an angle of inclination to the horizontal line and that the guiding means of the belt shoe (16) on the lateral walls (32) consists of guiding elements (40) extending at the angle of inclination of the conveyor means (10).
  6. Device according to any one of claims 4 to 5, characterized in that the lateral walls (32) on the end, on the side of the milling roller, of the guiding elements (40) comprise reception means (44) for the guide bolts (36) of the conveyor means (10), in which the guide bolts (36) are lockable and which also serve as a limit stopper for the conveyor means (10).
  7. Device according to any one of claims 1 to 6, characterized in that the conveyor means (10) is guided and supported movably in the belt shoe (16) and is biased against a stopper on the belt shoe (16) towards the milling roller (8) by means of a tension spring.
  8. Device according to any one of claims 5 to 7, characterized in that the guiding elements of the lateral walls (32) consist of guide surfaces (40) on the upper edges of the lateral walls (32), extending at the angle of inclination of the conveyor means.
  9. Device according to any one of claims 5 to 7, characterized in that the guiding elements of the lateral walls consist of rails and grooves adapted to the guide bolts (36) of the conveyor means (10) and extending at the angle of inclination of the conveyor means (10).
  10. Device according to any one of claims 1 to 9, characterized in that the machine frame (6) comprises a shaft extending at the angle of inclination of the conveyor means (10), in which the conveyor means (10) is insertable into the end position on the belt shoe (16) by means of a pairing of rails and rolls.
  11. Device according to claim 10, characterized in that rails (52) are arranged on the shaft (46) of the machine frame (6) and guiding rolls (54) are arranged on the conveyor means (10).
  12. Device according to claim 11, characterized in that the conveyor means (10) comprises a transport belt (11) and that the guiding rolls (54) of the conveyor means (10) simultaneously serve as support rolls for the lower run (58) of the transport belt (12).
  13. Device according to any one of claims 1 to 12, characterized in that the belt shoe (16) comprises a shield (66) in the shape of the bow of a ship on the frontal side thereof.
  14. Device according to any one of claims 2 to 13, characterized in that the belt shoe (16) comprises stiffening ribs (70) extending transversely to the lateral walls (32) for supporting the grate bars.
  15. Device according to any one of claims 1 to 14, characterized in that the conveyor means (10) comprises two further laterally projecting guide bolts (38) on the frontal end thereof averted from the milling roller (8), which are insertable in the shaft (46) into longitudinal supports (48) arranged on both sides of the conveyor means (10), when the conveyor means (10) is inserted in the belt shoe (16).
EP98928243A 1997-06-20 1998-05-12 Device for milling ground surfaces, specially roadways Expired - Lifetime EP0920555B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19726122 1997-06-20
DE19726122A DE19726122C2 (en) 1997-06-20 1997-06-20 Device for milling off floor coverings, in particular roadways
PCT/EP1998/002755 WO1998059114A1 (en) 1997-06-20 1998-05-12 Device for milling ground surfaces, specially roadways

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Publication Number Publication Date
EP0920555A1 EP0920555A1 (en) 1999-06-09
EP0920555B1 true EP0920555B1 (en) 2001-08-08

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US (1) US6296318B1 (en)
EP (1) EP0920555B1 (en)
JP (1) JP3698267B2 (en)
DE (2) DE19726122C2 (en)
WO (1) WO1998059114A1 (en)

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JP3698267B2 (en) 2005-09-21
WO1998059114A1 (en) 1998-12-30
US6296318B1 (en) 2001-10-02
EP0920555A1 (en) 1999-06-09
DE19726122C2 (en) 2002-03-07
DE59801161D1 (en) 2001-09-13
JP2000517018A (en) 2000-12-19
DE19726122A1 (en) 1999-01-28

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