EP1194651B1 - Construction machine and milling roller - Google Patents

Construction machine and milling roller Download PDF

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Publication number
EP1194651B1
EP1194651B1 EP00949338A EP00949338A EP1194651B1 EP 1194651 B1 EP1194651 B1 EP 1194651B1 EP 00949338 A EP00949338 A EP 00949338A EP 00949338 A EP00949338 A EP 00949338A EP 1194651 B1 EP1194651 B1 EP 1194651B1
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EP
European Patent Office
Prior art keywords
milling
base body
roller
roller base
tube
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EP00949338A
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German (de)
French (fr)
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EP1194651A1 (en
EP1194651B2 (en
Inventor
Olaf Gaertner
Günter HÄHN
Bernd Holl
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Wirtgen GmbH
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Wirtgen GmbH
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/12Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08Devices 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
    • E01C23/085Devices 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
    • E01C23/088Rotary tools, e.g. milling drums

Definitions

  • the invention relates to a milling drum according to the preamble of A construction machine according to claim 28.
  • DE 40 37 448 A describes a road milling machine in which the roller body between a supporting the drive housing Fixed bearing and an opposite floating bearing is clamped.
  • the floating bearing is provided with a centering taper and the bracket of the floating bearing can be moved hydraulically become. Furthermore, the floating bearing is connected to the tie rod Fixed storage braced.
  • the US 4,720,207 describes mounted on a roll base Fräsrohrsegmente. With this conception, first of all a corner ring segment attached to one side. Then they will Milling tube segments screwed to this, the screw connections are within the segments. The enormous screwing effort is disadvantageous and that the milling depth due to the constant Diameter of the base body, is restricted if a Planetary gear is integrated in the base body.
  • This gear arrangement is required to achieve a flush milling to enable.
  • Diameter of the milling shaft according to the volume of the gear unit customized. Then segments can be in the remaining area be attached with the milling tools.
  • a disadvantage of this invention is that for carrying out various Milling work, such as normal or fine milling, on one Exchange of the milling rotor can not be dispensed with.
  • the invention has for its object a milling drum and to create a construction machine that can quickly change from Milling drums, the simplified handling of the removed milling drums enable and the required for changing a milling drum Minimize time and effort.
  • the fastening elements are preferably on at least one arranged front end of the milling tube.
  • the milling tube on the roller body be postponed and by guide elements on the Fasteners opposite the axial end of the Roller body are guided and centered.
  • the milling tube on one end of the Fixed roller body.
  • the fasteners are there protected from pollution.
  • the Fastening elements radially inward from the milling tube protruding flange parts. Mounting screws are through this Flange parts passed axially and in the front of the Screwed roller body into it.
  • the milling tube can be a radial distance from that Comply with the roller body.
  • cylindrical cavity can be used, for example, to cool the Milling drum water can be filled.
  • the milling tube is preferably at two axially spaced locations supported radially on the roller body.
  • the support can thereby consist of radial guide elements, either radially outside on the roller base body or radially inside on the Milling tube are attached.
  • the guide elements consist of Support rings or segmented in the circumferential direction Guide elements, for example, under a mutual Angular distance of 120 ° can be arranged.
  • the Guide elements can have an axial cross section conical (i.e. trapezoidal), spherical or cylindrical shape exhibit.
  • the support can also consist of radial guide elements, the one piece with the at least one fastener are, so that the fastener is the axial non-rotatable connection between the milling tube and the roller body and the guidance and centering of the milling tube on the Roller base body at an axial.
  • the radial guide elements can have radially acting clamping elements exhibit.
  • the milling tube is preferably in one piece.
  • a support ring can be arranged, for example from at least consists of two radially bracing segment rings.
  • This support ring can be relative to the roller body and the Milling tube to be axially displaceable.
  • the segment rings of the support ring can be wedge-shaped in cross section his.
  • the at least one support ring can have a conical cross section middle ring consist of a radially outer as well as against a radially inner ring, the one in cross section have opposite conical shape, be axially clamped and the outer ring against the milling tube and the inner ring press against the roller body.
  • the at least one support ring can be circumferentially divided into two or more parts. This simplifies assembly a support ring; for example, the support ring can consist of two Half rings or consist of 120 ° segments.
  • the gear unit on the milling drum drive device facing End of the roller body is arranged.
  • the gear unit preferably integrated into the roller body.
  • the Gear unit on that facing away from the milling drum drive device End of the roller body is arranged, the Gear unit via a lead through the roller body Shaft connected to the milling drum drive device is.
  • the gear unit is in the roller base integrated.
  • the roller body is in two side walls of a roller box stored, the side wall facing away from the roller drive is pivotable or axially parallel.
  • the pivotable or axially displaceable side wall takes in Closing state of the floating bearing of the roller base body.
  • the floating bearing can be a guide part that tapers outwards have, which in a correspondingly tapered Side wall recess recessed and centered becomes.
  • Road milling machines generally consist of a chassis 2 in which an internal combustion engine 11 is mounted.
  • the chassis the machine usually consists of height-adjustable lifting columns 3.4, on which support wheels or chain drives 5.6 are mounted are.
  • the milling unit 7 with the milling drum 18 is located under the Chassis 2 and is rigidly connected to this. That from the Milling drum loosened material is conveyed to a first conveyor belt 9, the material to a second, height adjustable and forwardable pivoting conveyor belt 10.
  • Fig. 2 shows the milling drum drive concept.
  • An internal combustion engine 11 drives a pulley 13 directly.
  • the drive train is usually still a pump distributor gear 12, on which the hydraulic pumps for the various hydrostatic drives are mounted.
  • This pulley is with one Shaft connected to the power to a planetary gear inside of the milling drum 18, which transmits the engine speed the necessary roller speed is reduced.
  • the milling drum is stored in the side walls 16 and 17.
  • Fig. 3 shows a first embodiment of a in a roller box 31 stored milling drum 18.
  • the milling drum 18 exists from a roller base body 19, the two axial Ends in the side walls 16, 17 of the roller box 31 are rotatable is stored, and a milling tube 25 takes this from one planetary gear at one axial end existing gear unit 32 and is with this non-rotatably connected.
  • the fixed gear part 22 of the planetary gear 32 is by means of a screw 20 on the Side wall 16 attached.
  • An outer panel 21 can have 20 openings 23 at the level of the screw connections, so the screw connections 20 are accessible from the outside.
  • a floating bearing 24 is provided, which with the help a guide part 40 centrally in a recess 41 of the Side wall 17 is mounted.
  • the guide part 40 and the recess 41 can have a conical shape which is matched to one another, so that the roller body 19 with the floating bearing 24 in easier Way is mounted centrally.
  • the milling tube 25 For mounting the milling tube 25 on the roller base body 19 the milling tube 25 is pushed over the roller base body 19.
  • a radial Guide element 26 On the drive end of the roller body 19 is a radial Guide element 26 provided that on the one hand on the Roller base body 19 is attached and on the other hand as a screw flange serves for the planetary gear 32.
  • the leadership elements 26 can consist of an annular flange or Ring segments that only fill part of the circumferential area.
  • the guide elements 26 are slightly conical in cross section, spherical or cylindrical and can on the roller body 19 be welded.
  • the radial support of the milling tube on the roller base body 19 can in principle both positively and frictionally.
  • the guide elements 26 can also be made from a spline profile consist.
  • the guide elements 26 center the exchangeable milling tube 25.
  • a conical or spherical shape in cross section is preferred in order to tilt during the assembly of the milling tube 25 avoid.
  • a radial support of the milling tube 25 with the help of a Fastening element 28 of the milling tube 25 is provided.
  • This Fastening element 28 consists, for example, of a radial one ring flange projecting inwardly from the milling tube 25, attached to the inner lateral surface 44 of the milling tube 25 is.
  • This ring flange can, as can be seen from FIG. 3, be L-shaped in cross-section, with an axially projecting Ring segment or ring 42, the milling tube 25 with a fit supported radially on the roller base body 19.
  • the radially inward protruding portion of the fastener 28 with the help of axial fastening screws screwed to the front end 43 of the roller base body 19, so that the milling tube 25 rotatably with the roller base 19 is connected.
  • the roller body 19 can with his the end bearing 43 facing the floating bearing 24 on the from the ring flange existing fastener 28 without Form a gap 27 apply.
  • milling tubes 25 can be different Working width or with a different Line spacing of the milling tools to a different surface roughness of the road surface to be used and can be quickly replaced with other milling tubes 25.
  • Fig. 4 shows a further embodiment for narrow working widths of the milling tube 25, in which in particular the planetary gear 32 on the side of the roller base body facing away from the drive 19 is arranged.
  • the planetary gear 32 is over a shaft 56 which passes through the roller base body 19 is connected to the milling drum drive 11 to 15.
  • the Arrangement of the planetary gear 32 on the drive remote Side allows the milling tube 25 to be almost flush with the Machine outer edge (zero side) closes.
  • a radial support for the milling tube between the Milling tube and the roller base body 19 is arranged support ring 33 arranged, which consists of several segment rings 60,62,64.
  • the support ring 33 is axially both relative to the milling tube 25 as well as displaceable relative to the roller base body 19.
  • the outer segment rings 62,64 are on the radial the middle one Segment ring 60 tapered side and in the Inclination of the conical surfaces to the middle one, which is wedge-shaped in cross section Adjusted segment ring 60.
  • the middle segment ring 60 has fastening screws 35 which are ring-shaped or ring segment-shaped pressure plate 34 cooperate to the outer segment rings 60,64 against the middle segment ring 60 to brace. Due to the expansion of the outer segment rings 62, 64, the milling tube 25 is fixed on the roller base body 19 tense and centered at the same time.
  • the maximum cutting circle diameter is by dashed lines indicated, as well as the minimum milling width.
  • the figures 6 and 7 show an alternative radial support of the milling tube 25 on the roller base body 19.
  • the fastener is in this embodiment 28 axially flush at the front end 43 of the Roller base body 19 without a gap.
  • a cylindrical Guide element 26 welded to the tight fit the inner lateral surface 44 of the milling tube 25 abuts. Furthermore is the inner lateral surface 44 of the milling tube 25 on his free end protected with a protective sleeve 39, so that of the milling drum 25 loosened material not the inner surface 44 of the milling tube 25 can damage.
  • the Protective sleeve 39 on the planetary gear 32 via a flange attached.
  • FIG. 8 shows an alternative exemplary embodiment to FIG. 4 shown, the fastener 28 with a close fit rests on a flange part of the planetary gear 32.
  • Support ring 33 is screwed to the roller body 19 and can the roller base body 19 in different axial positions depending on the length of the milling tube 25.
  • the roller base body 19 has a protective tube 38 which can be replaced and mounted non-rotatably on the roller base body 19 is.
  • the protective tube 38 serves to roll the body 19 in front To protect damage from the milled material.
  • recesses 37 In the protective tube 38 are recesses 37 in predetermined axial Spaces evenly spaced around the circumference which the support ring 33 is mounted on the roller base body 19 can be.
  • the axial distances between the recesses 37 are Lengths of different milling tubes 25 adjusted.
  • the cutouts 37 are, if no support ring 33 is mounted, with a cover 36 closed, so that also in the area of the recesses 37 no damage to the roller base body 19 can occur. It is preferably provided that the support ring 33 with a Protective sleeve 39 is combined, which is at the free end of the milling tube 25 protects the inner lateral surface 44.
  • FIG. 9 shows a section along the line IX-IX in FIG. 8.
  • the support ring 33 consists of two halves, which by means of Screw connections 47 on the roller base body 19 against each other can be screwed tight.
  • the Support ring halves can on the projections 35 with the roller base 19 screwed.
  • the screw connections 47 after removal of the milling tube 25 released, so that the two halves of the support ring 33 can be pulled apart at least as far, that the support ring 33 are pushed over the protective tube 38 can.
  • the recesses 37 are arranged axially in the protective tube 38 so that the Support ring 33 coupled protective sleeve 39 for the inner lateral surface 44 of the milling tube each flush with the free end of the each used milling tube 25 completes.

Abstract

In a construction machine comprising a machine frame (2) having a milling roller (18) arranged for rotation therein, the milling roller (18) comprising a roller base body (19) driven by a milling roller drive device (11 to 15) via a transmission unit (32), and a milling tube (25) to be coaxially mounted on the roller base body (19) and to be attached in a manner allowing exchange thereof, with the milling tube (25) carrying cutting tools on its outer surface (46), it is provided that the milling tube (25) comprises fastening elements (28), radially projecting from the inner surface (44), by which the milling tube (25) can be mounted in a rotationally fixed manner to the roller base body (19) or to a member connected to the roller base body (19).

Description

Die Erfindung betrifft eine Fräswalze nach dem Oberbegriff des Anspruchs 1 bzw. eine Baumaschine nach Anspruch 28.The invention relates to a milling drum according to the preamble of A construction machine according to claim 28.

Häufig ist es nötig, aufgrund unterschiedlicher Baustellensituationen und Fräsarbeiten das Fräswerkzeug den spezifischen Aufgaben anzupassen. Beispielsweise wenn eine bestimmte Oberflächenrauhigkeit erreicht werden soll, ist eine Fräswalze mit einem bestimmten Linienabstand der Fräswerkzeuge oder eine andere Werkzeugausrüstung erforderlich. In einem anderen Anwendungsfall sollen nur bestimmte Fahrbahnbreiten ausgebaut werden, so dass eine Fräswalze mit einer bestimmten Arbeitsbreite benötigt wird.It is often necessary due to different construction site situations and milling work the milling tool the specific tasks adapt. For example, if a certain surface roughness is to be achieved is a milling drum with a certain line spacing of the milling tools or another Tooling equipment required. In another use case only certain lane widths should be expanded, so that a milling drum with a certain working width is required becomes.

In der Regel muß in solchen Situationen eine spezielle Fräsmaschine eingesetzt werden, oder die Maschine muß mit einer der Aufgabe angepaßten Fräswalze ausgerüstet werden. Gegenwärtig ist der Austausch der Walzen aber sehr aufwendig und erfordert spezielle Hilfsmittel zur Montage bzw. Demontage der Fräswalze. As a rule, a special milling machine is required in such situations be used, or the machine must be equipped with one of the Task adapted milling drum to be equipped. Currently the replacement of the rollers is very complex and requires special aids for assembling or disassembling the milling drum.

Die Anpassung des Fräswerkzeuges an unterschiedliche Anforderungen ist im Stand der Technik bekannt.The adaptation of the milling tool to different requirements is known in the art.

Die DE 40 37 448 A beschreibt eine Straßenfräsmaschine, bei der der Walzenkörper zwischen einem das Antriebsgehäuse tragenden Festlager und einem gegenüberliegenden Loslager verspannt ist. Das Loslager ist mit einem zentrierenden Aufnahmekegel versehen und die Halterung des Loslagers kann hydraulisch verschoben werden. Ferner wird die Loslagerung über einen Zuganker mit der Festlagerung verspannt.DE 40 37 448 A describes a road milling machine in which the roller body between a supporting the drive housing Fixed bearing and an opposite floating bearing is clamped. The floating bearing is provided with a centering taper and the bracket of the floating bearing can be moved hydraulically become. Furthermore, the floating bearing is connected to the tie rod Fixed storage braced.

Bei der aus der DE 40 37 448 A bekannten Lösung wird ein aufwendiger Spannmechanismus mit einem Zuganker und einem Stellzylinder oberhalb der Fräswalze benötigt.In the solution known from DE 40 37 448 A is a complex Clamping mechanism with a tie rod and an adjusting cylinder needed above the milling drum.

In der US 4704045 wird ein Fräsaggregat beschrieben, dessen Breite durch die Verwendung von verschiedenen Walzensegmenten variiert werden kann. Die Walzensegmente werden bei dieser Lösung über eine Steckverbindung miteinander verbunden. Diese Art stellt in gewisser Weise zwar ein Fräswalzen-Schnellwechselsystem dar, welches aber die folgenden Nachteile besitzt:In US 4704045 a milling unit is described, the Width through the use of different roller segments can be varied. The roller segments are in this solution connected to each other via a plug connection. This kind in a way provides a milling drum quick-change system which has the following disadvantages:

Unvorteilhaft an dieser Lösung ist, dass der Fräswalzenantrieb hydrostatisch erfolgt, indem auf beiden Seiten der Fräswalze Hydraulikmotoren angebracht werden. Darüber hinaus ist die Verbindung zwischen den Segmenten eine einfache Steckverbindung, die nur eine unzureichende Zentrierung des Fräsrotors erlaubt.A disadvantage of this solution is that the milling drum drive is done hydrostatically on both sides of the milling drum Hydraulic motors are attached. In addition, the connection a simple plug connection between the segments, which only allows inadequate centering of the milling rotor.

Die DE 31 45 713 A beschreibt eine Fräswalze für eine Straßenfräse, die mittels einer von einem Stützrahmen getragenen Walzenlager- und Antriebseinrichtung gestützt und angetrieben wird, wobei die Fräswalze aus einem zylindrischen Grundkörper besteht. An dem einen Ende der einseitig Fräswalze befindet sich der Antrieb der Walzenlager- und Antriebseinrichtung sowie eine Ringschulter, gegen die sich das von dem anderen Ende aufgeschobene Fräsrohr abstützt. Auf der dem Antrieb gegenüberliegenden Seite ist ein Halteflansch angebracht, der das Fräsrohr fixiert. Diese Konzeption sieht einen hydrostatischen Antrieb der Fräswalze vor, der aufgrund seiner systembedingten Nachteile, z.B. geringer Wirkungsgrad, heute bei Straßenfräsen kaum noch zum Einsatz kommt. Ferner besteht ein Nachteil dieser Lösung darin, daß die Fräsrohre über Ringschultern axial fixiert werden müssen, so daß die Befestigungselemente im Bereich der stärksten Verschmutzung liegen.DE 31 45 713 A describes a milling drum for a road milling machine, by means of a roller bearing supported by a support frame and drive device supported and driven is, the milling drum from a cylindrical base body consists. Located on one end of the milling drum on one side the drive of the roller bearing and drive device as well a ring shoulder against which the one pushed from the other end Milling tube supports. On the opposite of the drive A holding flange is attached to the side of the milling tube fixed. This concept sees a hydrostatic drive the milling drum, which due to its systemic disadvantages, e.g. low efficiency, today hardly with road milling machines is still used. There is also a disadvantage of this solution in that the milling tubes are axially fixed via ring shoulders must be so that the fasteners in the area of heaviest pollution.

Die US 4,720,207 beschreibt auf einem Walzengrundkörper montierte Fräsrohrsegmente. Bei dieser Konzeption wird zunächst an einer Seite ein Eckringsegment angebracht. Dann werden die Fräsrohrsegmente an diesem verschraubt, wobei die Verschraubungen innerhalb der Segmente sind. Nachteilig ist der enorme Verschraubungsaufwand und, daß die Frästiefe aufgrund des konstanten Durchmessers des Grundkörpers, eingeschränkt ist, wenn ein Planetengetriebe in den Grundkörper integriert ist.The US 4,720,207 describes mounted on a roll base Fräsrohrsegmente. With this conception, first of all a corner ring segment attached to one side. Then they will Milling tube segments screwed to this, the screw connections are within the segments. The enormous screwing effort is disadvantageous and that the milling depth due to the constant Diameter of the base body, is restricted if a Planetary gear is integrated in the base body.

Eine andere Lösung, bei der vor allem die Frästiefe nicht eingeschränkt ist, wird in der US 5,505,598 beschrieben. Bei dieser ist das Fräswalzenrohr, auf dem die Segmente mit den Fräswerkzeugen montiert werden, absätzig. Der Grund hierfür ist, dass das für einen mechanischen Fräswalzenantrieb erforderliche Getriebe in den Rotor integriert ist. Das Planetengetriebe befindet sich auf der der Riemenabtriebsscheibe gegenüberliegenden Seite und wird von einer durch die Fräswelle geführten Antriebswelle angetrieben.Another solution, in which above all the milling depth is not restricted is described in US 5,505,598. At this is the milling drum tube on which the segments with the milling tools be assembled, paragraph. The reason for this is that is required for a mechanical milling drum drive Gear is integrated in the rotor. The planetary gear is located on the opposite side of the belt driven pulley Side and is driven by a drive shaft through the milling shaft driven.

Diese Getriebeanordnung ist erforderlich, um ein bündiges Fräsen zu ermöglichen. Im Bereich des Walzengetriebes ist der Durchmesser der Fräswelle entsprechend dem Bauvolumen des Getriebes angepasst. In dem restlichen Bereich können dann Segmente mit den Fräswerkzeugen angebracht werden.This gear arrangement is required to achieve a flush milling to enable. In the area of the roller gear is Diameter of the milling shaft according to the volume of the gear unit customized. Then segments can be in the remaining area be attached with the milling tools.

Nachteilig an dieser Erfindung ist, daß zur Durchführung verschiedener Fräsarbeiten, wie Normal- oder Feinfräsen, auf einen Austausch des Fräsrotors nicht verzichtet werden kann.A disadvantage of this invention is that for carrying out various Milling work, such as normal or fine milling, on one Exchange of the milling rotor can not be dispensed with.

Die gegenwärtigen Fräswalzen und Erfindungen zum Anpassen der Fräswerkzeuge an unterschiedliche Anwendungen konzentrieren sich lediglich auf das Anpassen des Fräsrotors an die jeweilige Baustellensituation.The current milling drums and inventions to customize the Focus milling tools on different applications only the adaptation of the milling rotor to the respective Site situation.

Problematisch bei dem genannten Stand der Technik ist in der Regel, daß die Befestigungselemente zur Fixierung des Fräselementes auf den Grundkörper, im Mantelbereich des zylindrischen Fräswerkzeuges sind. Gerade dieser Bereich ist aber besonders starken Verschmutzungen ausgesetzt, so daß dadurch das Wechseln des Fräsrohres erheblich erschwert wird.The problem with the prior art mentioned is in Rule that the fasteners to fix the milling element on the base body, in the jacket area of the cylindrical Milling tool. But this area is particularly special exposed to heavy soiling, thereby changing of the milling tube is made considerably more difficult.

Der Erfindung liegt die Aufgabe zugrunde, eine Fräswalze sowie eine Baumaschine zu schaffen, die einen schnellen Wechsel von Fräswalzen, die vereinfachte Handhabung der ausgebauten Fräswalzen ermöglichen und die für den Wechsel einer Fräswalze benötigte Zeit und den Arbeitsaufwand minimieren. The invention has for its object a milling drum and to create a construction machine that can quickly change from Milling drums, the simplified handling of the removed milling drums enable and the required for changing a milling drum Minimize time and effort.

Zur Lösung dieser Aufgabe dienen ein Fräswalze, bzw. eine Baumaschine, mit den Merkmalen des Anspruchs 1 bzw. 28.To solve this problem, a milling drum or Construction machine with the features of claims 1 and 28, respectively.

Die erfindungsgemäße Lösung sieht in vorteilhafter Weise vor, daß das einstückige Fräsrohr radial von der inneren Mantelfläche abstehende Befestigungselemente aufweist, mit denen das Fräsrohr an dem Walzengrundkörper oder an einem mit dem Walzengrundkörper verbundenen Teil drehfest befestigbar ist. Diese Lösung hat folgende Vorteile:

  • Zum Austausch des Fräswerkzeuges braucht nur das Fräsrohr ausgetauscht werden.
  • Die Befestigungselemente befinden sich im Bereich der geringsten Verschmutzung.
  • Der Walzenantrieb mit den mechanischen Fräswalzenantriebselementen verbleibt ausgerichtet gegenüber dem gesamten Antriebsstrang an der Maschine.
  • Eignung der Fräswalze für verschiedene Fräswalzenkonzeptionen.
  • Keine Justierung des Antriebsstranges erforderlich.
  • Zentrierung des Fräsrohres auf den Fräswalzenantriebselementen.
  • Leicht lösbare Verbindung Fräsrohr-Fräswalzenantriebselement
  • Reduzierung des Hebezeugaufwandes.
  • Vermeidung von Unwuchten infolge von Achsverschiebungen oder Winkelversätzen.
The solution according to the invention advantageously provides that the one-piece milling tube has fastening elements projecting radially from the inner lateral surface, with which the milling tube can be fastened in a rotationally fixed manner to the roller base body or to a part connected to the roller base body. This solution has the following advantages:
  • To replace the milling tool, only the milling tube needs to be replaced.
  • The fasteners are located in the area of minimal contamination.
  • The roller drive with the mechanical milling drum drive elements remains aligned with the entire drive train on the machine.
  • Suitability of the milling drum for different milling drum designs.
  • No adjustment of the drive train required.
  • Centering of the milling tube on the milling drum drive elements.
  • Easily detachable connection between milling tube and milling drum drive element
  • Reduction in hoisting effort.
  • Avoiding imbalances due to axis displacements or angular misalignments.

Die Befestigungselemente sind vorzugsweise an mindestens einem stirnseitigen Ende des Fräsrohrs angeordnet. Auf diese Weise kann beispielsweise das Fräsrohr auf den Walzengrundkörper aufgeschoben werden und von Führungselementen an den den Befestigungselementen entgegengesetzten axialen Ende des Walzengrundkörpers geführt und zentriert werden.The fastening elements are preferably on at least one arranged front end of the milling tube. In this way can, for example, the milling tube on the roller body be postponed and by guide elements on the Fasteners opposite the axial end of the Roller body are guided and centered.

Vorzugsweise wird das Fräsrohr an einer Stirnseite des Walzengrundkörpers befestigt. Die Befestigungselemente sind dabei vor Verschmutzung geschützt.Preferably, the milling tube on one end of the Fixed roller body. The fasteners are there protected from pollution.

Bei einem bevorzugten Ausführungsbeispiel bestehen die Befestigungselemente aus von dem Fräsrohr radial nach innen abstehenden Flanschteilen. Befestigungsschrauben sind durch diese Flanschteile axial hindurchgeführt und in die Stirnseite des Walzengrundkörpers hineingeschraubt.In a preferred embodiment, the Fastening elements radially inward from the milling tube protruding flange parts. Mounting screws are through this Flange parts passed axially and in the front of the Screwed roller body into it.

Das Fräsrohr kann einen radialen Abstand von dem Walzengrundkörper einhalten. In dem dadurch freibleibenden zylindrischen Hohlraum kann beispielsweise zur Kühlung der Fräswalze Wasser eingefüllt werden.The milling tube can be a radial distance from that Comply with the roller body. In the thereby subject to change cylindrical cavity can be used, for example, to cool the Milling drum water can be filled.

Das Fräsrohr ist vorzugsweise an zwei axial beabstandeten Stellen radial auf den Walzengrundkörper abgestützt. Die Abstützung kann dabei aus radialen Führungselementen bestehen, die entweder radial außen an dem Walzengrundkörper oder radial innen an dem Fräsrohr befestigt sind. Die Führungselemente bestehen dabei aus Stützringen oder in Umfangsrichtung segmentierten Führungselementen, die beispielsweise unter einem gegenseitigen Winkelabstand von 120° angeordnet sein können. Die Führungselemente können dabei eine im axialen Querschnitt konische (d.h. trapezförmige), ballige oder zylindrische Form aufweisen.The milling tube is preferably at two axially spaced locations supported radially on the roller body. The support can thereby consist of radial guide elements, either radially outside on the roller base body or radially inside on the Milling tube are attached. The guide elements consist of Support rings or segmented in the circumferential direction Guide elements, for example, under a mutual Angular distance of 120 ° can be arranged. The Guide elements can have an axial cross section conical (i.e. trapezoidal), spherical or cylindrical shape exhibit.

Die Abstützung kann auch aus radialen Führungselementen bestehen, die mit dem mindestens einen Befestigungselement einstükkig sind, so daß das Befestigungselement zugleich die axiale drehfeste Verbindung zwischen dem Fräsrohr und dem Walzengrundkörper und die Führung und Zentrierung des Fräsrohrs auf dem Walzengrundkörper an einem axialen.Ende bewirkt.The support can also consist of radial guide elements, the one piece with the at least one fastener are, so that the fastener is the axial non-rotatable connection between the milling tube and the roller body and the guidance and centering of the milling tube on the Roller base body at an axial.

Die radialen Führungselemente können radial wirkende Spannelemente aufweisen.The radial guide elements can have radially acting clamping elements exhibit.

Vorzugsweise ist das Fräsrohr einstückig.The milling tube is preferably in one piece.

Zwischen dem Fräsrohr und dem Walzengrundkörper kann mindestens ein Stützring angeordnet sein, der beispielsweise aus mindestens zwei sich radial verspannenden Segmentringen besteht.At least between the milling tube and the roller body a support ring can be arranged, for example from at least consists of two radially bracing segment rings.

Dieser Stützring kann relativ zu dem Walzengrundkörper und dem Fräsrohr axial verschiebbar sein.This support ring can be relative to the roller body and the Milling tube to be axially displaceable.

Die Segmentringe des Stützrings können im Querschnitt keilförmig sein.The segment rings of the support ring can be wedge-shaped in cross section his.

Der mindestens eine Stützring kann aus einem im Querschnitt konischen mittleren Ring bestehen, der gegen einen radial äußeren sowie gegen einen radial inneren Ring, die eine im Querschnitt entgegengesetzt konische Form aufweisen, axial spannbar sein und den äußeren Ring gegen das Fräsrohr und den inneren Ring gegen den Walzengrundkörper andrücken.The at least one support ring can have a conical cross section middle ring consist of a radially outer as well as against a radially inner ring, the one in cross section have opposite conical shape, be axially clamped and the outer ring against the milling tube and the inner ring press against the roller body.

Der mindestens eine Stützring kann in Umfangsrichtung in zwei oder mehr Teile unterteilt sein. Dies vereinfacht die Montage eines Stützrings; beispielsweise kann der Stützring aus zwei Halbringen oder aus 120°-Segmenten bestehen. The at least one support ring can be circumferentially divided into two or more parts. This simplifies assembly a support ring; for example, the support ring can consist of two Half rings or consist of 120 ° segments.

Bei einem Ausführungsbeispiel ist vorgesehen, daß die Getriebeeinheit an dem der Fräswalzenantriebseinrichtung zugewandten Ende des Walzengrundkörpers angeordnet ist. Dabei ist die Getriebeeinheit vorzugsweise in den Walzengrundkörper integriert.In one embodiment it is provided that the gear unit on the milling drum drive device facing End of the roller body is arranged. Here is the gear unit preferably integrated into the roller body.

Bei einem anderen Ausführungsbeispiel ist vorgesehen, daß die Getriebeeinheit an dem der Fräswalzenantriebseinrichtung abgewandten Ende des Walzengrundkörpers angeordnet ist, wobei die Getriebeeinheit über eine durch den Walzengrundkörper hindurchgeführte Welle mit der Fräswalzenantriebseinrichtung verbunden ist. Auch in diesem Fall ist die Getriebeeinheit in den Walzengrundkörper integriert. Eine derartige Konstruktion erlaubt den Einsatz von Fräsrohren mit geringer Fräsbreite.In another embodiment it is provided that the Gear unit on that facing away from the milling drum drive device End of the roller body is arranged, the Gear unit via a lead through the roller body Shaft connected to the milling drum drive device is. In this case too, the gear unit is in the roller base integrated. Such a construction allows Use of milling tubes with a small milling width.

Der Walzengrundkörper ist in zwei Seitenwänden eines Walzenkastens gelagert, wobei die dem Walzenantrieb abgewandten Seitenwand verschwenkbar oder achsparallel verschiebbar ist. Die verschwenkbare oder axial verschiebbare Seitenwand nimmt im Schließzustand das Loslager des Walzengrundkörpers auf.The roller body is in two side walls of a roller box stored, the side wall facing away from the roller drive is pivotable or axially parallel. The pivotable or axially displaceable side wall takes in Closing state of the floating bearing of the roller base body.

Hierzu kann das Loslager ein sich nach außen verjüngendes Führungsteil aufweisen, welches in einer entsprechend sich verjüngenden Aussparung der Seitenwand aufgenommen und zentriert wird.For this purpose, the floating bearing can be a guide part that tapers outwards have, which in a correspondingly tapered Side wall recess recessed and centered becomes.

Weitere vorteilhafte Ausbildungen der Erfindung sind den weiteren Ansprüchen zu entnehmen.Further advantageous developments of the invention are the others Claims.

Im folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert:The following are exemplary embodiments with reference to the drawings of the invention:

Es zeigen:

Fig. 1
eine Straßenfräsmaschine,
Fig. 2
eine schematische Darstellung des Fräswalzenantriebs,
Fig. 3
ein erstes Ausführungsbeispiel einer in einem Walzenkasteri gelagerten Fräswalze mit auswechselbarem Fräsrohr,
Fig. 4
ein zweites Ausführungsbeispiel einer in einem Walzenkasten gelagerten Fräswalze,
Fig. 5
eine schwenkbare Seitenwand des Walzenkastens,
Fig. 6 und 7
ein alternatives Ausführungsbeispiel für die radiale Abstützung des Fräsrohrs,
Fig. 8
ein drittes Ausführungsbeispiel einer Fräswalze, und
Fig. 9
einen Schnitt entlang der Linie IX-IX in Fig. 8.
Show it:
Fig. 1
a road milling machine,
Fig. 2
a schematic representation of the milling drum drive,
Fig. 3
1 shows a first exemplary embodiment of a milling drum mounted in a roller box with an exchangeable milling tube,
Fig. 4
a second embodiment of a milling drum mounted in a roller box,
Fig. 5
a swiveling side wall of the roller box,
6 and 7
an alternative embodiment for the radial support of the milling tube,
Fig. 8
a third embodiment of a milling drum, and
Fig. 9
a section along the line IX-IX in Fig. 8.

In Fig. 1 ist eine Straßenfräsmaschine 1 dargestellt, in der die im folgenden beschriebene Erfindung vornehmlich eingesetzt wird. Straßenfräsen bestehen im allgemeinen aus einem Chassis 2 in dem ein Verbrennungsmotor 11 montiert ist. Das Fahrwerk der Maschine besteht in der Regel aus höhenverstellbaren Hubsäulen 3,4, an denen Stützräder oder Kettenlaufwerke 5,6 montiert sind.In Fig. 1, a road milling machine 1 is shown in the the invention described below mainly used becomes. Road milling machines generally consist of a chassis 2 in which an internal combustion engine 11 is mounted. The chassis the machine usually consists of height-adjustable lifting columns 3.4, on which support wheels or chain drives 5.6 are mounted are.

Das Fräsaggregat 7 mit der Fräswalze 18 befindet sich unter dem Chassis 2 und ist mit diesem starr verbunden. Das von der Fräswalze gelöste Material wird auf ein erstes Förderband 9 gefördert, das das Material an ein zweites, höhenverstellbares und schwenkbares Förderband 10 weiterleitet.The milling unit 7 with the milling drum 18 is located under the Chassis 2 and is rigidly connected to this. That from the Milling drum loosened material is conveyed to a first conveyor belt 9, the material to a second, height adjustable and forwardable pivoting conveyor belt 10.

Fig.2 gibt das Fräswalzenantriebskonzept wieder. Ein Verbrennungsmotor 11 treibt direkt eine Riemenscheibe 13 an. In diesem Antriebsstrang befindet sich in der Regel noch ein Pumpenverteilergetriebe 12, an dem die Hydraulikpumpen für die verschiedenen hydrostatischen Antriebe montiert sind. Über einen Verbundkeilriemen 14 wird die Motorleistung auf eine zweite Riemenscheibe 15 übertragen. Diese Riemenscheibe ist mit einer Welle verbunden, die die Leistung an ein Planetengetriebe innerhalb der Fräswalze 18 überträgt, das die Motordrehzahl auf die nötige Walzendrehzahl reduziert. Gelagert ist die Fräswalze in den Seitenwänden 16 und 17.Fig. 2 shows the milling drum drive concept. An internal combustion engine 11 drives a pulley 13 directly. In this The drive train is usually still a pump distributor gear 12, on which the hydraulic pumps for the various hydrostatic drives are mounted. About one Composite V-belt 14, the engine power to a second Transfer pulley 15. This pulley is with one Shaft connected to the power to a planetary gear inside of the milling drum 18, which transmits the engine speed the necessary roller speed is reduced. The milling drum is stored in the side walls 16 and 17.

Fig. 3 zeigt ein erstes Ausführungsbeispiel einer in einem Walzenkasten 31 gelagerten Fräswalze 18. Die Fräswalze 18 besteht aus einem Walzengrundkörper 19, der an seinen beiden axialen Enden in den Seitenwänden 16,17 des Walzenkastens 31 drehbar gelagert ist, und einem Fräsrohr 25. Der Walzengrundkörper 19 nimmt hierzu an einem axialen Ende die aus einem Planetengetriebe bestehende Getriebeeinheit 32 auf und ist mit dieser drehfest verbunden. Das feststehende Getriebeteil 22 des Planetengetriebes 32 ist mit Hilfe einer Schraubverbindung 20 an der Seitenwand 16 befestigt. Eine äußere Verkleidungswand 21 kann in Höhe der Schraubverbindungen 20 Öffnungen 23 aufweisen, damit die Schraubverbindungen 20 von außen zugänglich sind. An dem der Antriebsseite entgegengesetzten axialen Ende des Walzengrundkörpers 19 ist ein Loslager 24 vorgesehen, das mit Hilfe eines Führungsteils 40 zentrisch in einer Aussparung 41 der Seitenwand 17 gelagert ist. Das Führungsteil 40 und die Aussparung 41 können eine einander angepaßte konische Form aufweisen, so daß der Walzengrundkörper 19 mit dem Loslager 24 in einfacher Weise zentrisch gelagert ist.Fig. 3 shows a first embodiment of a in a roller box 31 stored milling drum 18. The milling drum 18 exists from a roller base body 19, the two axial Ends in the side walls 16, 17 of the roller box 31 are rotatable is stored, and a milling tube 25 takes this from one planetary gear at one axial end existing gear unit 32 and is with this non-rotatably connected. The fixed gear part 22 of the planetary gear 32 is by means of a screw 20 on the Side wall 16 attached. An outer panel 21 can have 20 openings 23 at the level of the screw connections, so the screw connections 20 are accessible from the outside. On the axial end of the roller base body opposite the drive side 19, a floating bearing 24 is provided, which with the help a guide part 40 centrally in a recess 41 of the Side wall 17 is mounted. The guide part 40 and the recess 41 can have a conical shape which is matched to one another, so that the roller body 19 with the floating bearing 24 in easier Way is mounted centrally.

Zur Montage des Fräsrohres 25 auf dem Walzengrundkörper 19 wird das Fräsrohr 25 über den Walzengrundkörper 19 aufgeschoben. An dem antriebsseitigen Ende des Walzengrundkörpers 19 ist ein radiales Führungselement 26 vorgesehen, daß einerseits an dem Walzengrundkörper 19 befestigt ist und andererseits als Verschraubungsflansch für das Planetengetriebe 32 dient. Die Führungselemente 26 können aus einem Ringflansch bestehen oder aus Ringsegmenten, die nur einen Teil des Umfangsbereiches ausfüllen. Die Führungselemente 26 sind im Querschnitt leicht konisch, ballig oder zylindrisch und können an dem Walzengrundkörper 19 angeschweißt sein. Die radiale Abstützung des Fräsrohrs auf dem Walzengrundkörper 19 kann grundsätzlich sowohl formschlüssig als auch reibschlüssig erfolgen. Beispielsweise können die Führungselemente 26 auch aus einem Keilwellenprofil bestehen.For mounting the milling tube 25 on the roller base body 19 the milling tube 25 is pushed over the roller base body 19. On the drive end of the roller body 19 is a radial Guide element 26 provided that on the one hand on the Roller base body 19 is attached and on the other hand as a screw flange serves for the planetary gear 32. The leadership elements 26 can consist of an annular flange or Ring segments that only fill part of the circumferential area. The guide elements 26 are slightly conical in cross section, spherical or cylindrical and can on the roller body 19 be welded. The radial support of the milling tube on the roller base body 19 can in principle both positively and frictionally. For example the guide elements 26 can also be made from a spline profile consist.

Die Führungselemente 26 zentrieren das austauschbare Fräsrohr 25. Eine im Querschnitt konische oder ballige Form wird bevorzugt, um ein Verkanten während der Montage des Fräsrohres 25 zu vermeiden.The guide elements 26 center the exchangeable milling tube 25. A conical or spherical shape in cross section is preferred in order to tilt during the assembly of the milling tube 25 avoid.

An dem dem Loslager 24 zugewandten Ende des Walzengrundkörpers 19 ist eine radiale Abstützung des Fräsrohres 25 mit Hilfe eines Befestigungselementes 28 des Fräsrohres 25 vorgesehen. Dieses Befestigungselement 28 besteht beispielsweise aus einem radial von dem Fräsrohr 25 nach innen abstehenden Ringflansch, der auf der inneren Mantelfläche 44 des Fräsrohres 25 befestigt ist. Dieser Ringflansch kann, wie aus Fig. 3 ersichtlich ist, im Querschnitt L-förmig gestaltet sein, wobei ein axial abstehendes Ringsegment oder Ring 42 das Fräsrohr 25 mit einer Passung radial auf dem Walzengrundkörper 19 abstützt.At the end of the roller base body facing the floating bearing 24 19 is a radial support of the milling tube 25 with the help of a Fastening element 28 of the milling tube 25 is provided. This Fastening element 28 consists, for example, of a radial one ring flange projecting inwardly from the milling tube 25, attached to the inner lateral surface 44 of the milling tube 25 is. This ring flange can, as can be seen from FIG. 3, be L-shaped in cross-section, with an axially projecting Ring segment or ring 42, the milling tube 25 with a fit supported radially on the roller base body 19.

Der radial nach innen abstehende Abschnitt des Befestigungselementes 28 wird mit Hilfe von axialen Befestigungsschrauben mit dem stirnseitigen Ende 43 des Walzengrundkörpers 19 verschraubt, so daß das Fräsrohr 25 drehfest mit dem Walzengrundkörper 19 verbunden ist. Der Walzengrundkörper 19 kann mit seinem dem Loslager 24 zugewandten stirnseitigen Ende 43 an dem aus dem Ringflansch bestehenden Befestigungselement 28 ohne Bildung eines Spaltes 27 anliegen.The radially inward protruding portion of the fastener 28 with the help of axial fastening screws screwed to the front end 43 of the roller base body 19, so that the milling tube 25 rotatably with the roller base 19 is connected. The roller body 19 can with his the end bearing 43 facing the floating bearing 24 on the from the ring flange existing fastener 28 without Form a gap 27 apply.

Auf der äußeren Mantelfläche 46 des Fräsrohres 25 sind nicht dargestellte Fräswerkzeuge montiert.On the outer circumferential surface 46 of the milling tube 25 are not shown milling tools mounted.

Um die Straßenfräsmaschine an unterschiedliche Anforderungen einer Baustelle anpassen zu könne, muß lediglich das Fräsrohr 25 ausgetauscht werden. Auf diese Weise können Fräsrohre 25 unterschiedlicher Arbeitsbreite oder mit einem unterschiedlichen Linienabstand der Fräswerkzeuge, um eine andere Oberflächenrauhigkeit des Straßenbelags zu erzielen, verwendet werden und schnell gegen andere Fräsrohre 25 ausgetauscht werden.To the road milling machine to meet different requirements To be able to adapt to a construction site, only the milling tube 25 can be exchanged. In this way, milling tubes 25 can be different Working width or with a different Line spacing of the milling tools to a different surface roughness of the road surface to be used and can be quickly replaced with other milling tubes 25.

Zur Montage des Fräsrohres 25 wird die an dem Loslager 24 befindliche Seitenwand 17 demontiert oder über ein Scharnier oder ein Getriebe 30, wie in Fig. 5 gezeigt, verschwenkt. Das Scharnier 30 bzw. das Getriebe ist an dem Walzenkasten 31 befestigt. Nach dem Verschwenken der Seitenwand 17 können die Befestigungsschrauben des Befestigungselementes 28 gelöst werden und das Fräsrohr 25 mit einfachen Werkzeugen ausgetauscht werden.To mount the milling tube 25, the one located on the floating bearing 24 Side wall 17 disassembled or via a hinge or a gear 30, as shown in Fig. 5, pivoted. The hinge 30 or the transmission is attached to the roller box 31. After pivoting the side wall 17, the fastening screws of the fastener 28 are solved and the milling tube 25 can be replaced with simple tools.

Fig. 4 zeigt ein weiteres Ausführungsbeispiel für schmale Arbeitsbreiten des Fräsrohres 25, bei dem insbesondere das Planetengetriebe 32 auf der antriebsabgewandten Seite des Walzengrundkörpers 19 angeordnet ist. Das Planetengetriebe 32 ist über eine Welle 56, die durch den Walzengrundkörper 19 hindurchgeführt ist, mit dem Fräswalzenantrieb 11 bis 15 verbunden. Die Anordnung des Planetengetriebes 32 auf der antriebsabgewandten Seite ermöglicht es, daß das Fräsrohr 25 nahezu bündig mit der Maschinenaußenkante (Null-Seite) abschließt. Beim Auswechseln des Fräsrohres 25 kann nach dem Entfernen der Seitenwand 17 das Fräsrohr 25 über das Planetengetriebe 32 geschoben werden, bis das Befestigungselement 28 an dem Planetengetriebe 32 anliegt.Fig. 4 shows a further embodiment for narrow working widths of the milling tube 25, in which in particular the planetary gear 32 on the side of the roller base body facing away from the drive 19 is arranged. The planetary gear 32 is over a shaft 56 which passes through the roller base body 19 is connected to the milling drum drive 11 to 15. The Arrangement of the planetary gear 32 on the drive remote Side allows the milling tube 25 to be almost flush with the Machine outer edge (zero side) closes. When changing the milling tube 25 can after removing the side wall 17 Milling tube 25 are pushed over the planetary gear 32 until the fastener 28 abuts the planetary gear 32.

An dem dem Planetengetriebe 32 abgewandten Ende des Fräsrohres 25 ist als radiale Abstützung des Fräsrohres ein zwischen dem Fräsrohr und dem Walzengrundkörper 19 angeordneter Stützring 33 angeordnet, der aus mehreren Segmentringen 60,62,64 besteht. Der Stützring 33 ist axial sowohl relativ zu dem Fräsrohr 25 als auch relativ zu dem Walzengrundkörper 19 verschiebbar. Die äußeren Segmentringe 62,64 sind auf der radial dem mittleren Segmentring 60 zugewandten Seite konisch abgeschrägt und in der Neigung der Konusflächen dem im Querschnitt keilförmigen mittleren Segmentring 60 angepaßt. Der mittlere Segmentring 60 weist Befestigungsschrauben 35 auf, die mit einer ringförmigen oder ringsegmentförmigen Gegendruckplatte 34 zusammenwirken, um die äußeren Segmentringe 60,64 gegen den mittleren Segmentring 60 zu verspannen. Durch die Ausdehnung der äußeren Segmentringe 62,64 wird das Fräsrohr 25 fest auf den Walzengrundkörper 19 gespannt und gleichzeitig zentriert.At the end of the milling tube facing away from the planetary gear 32 25 is a radial support for the milling tube between the Milling tube and the roller base body 19 arranged support ring 33 arranged, which consists of several segment rings 60,62,64. The support ring 33 is axially both relative to the milling tube 25 as well as displaceable relative to the roller base body 19. The outer segment rings 62,64 are on the radial the middle one Segment ring 60 tapered side and in the Inclination of the conical surfaces to the middle one, which is wedge-shaped in cross section Adjusted segment ring 60. The middle segment ring 60 has fastening screws 35 which are ring-shaped or ring segment-shaped pressure plate 34 cooperate to the outer segment rings 60,64 against the middle segment ring 60 to brace. Due to the expansion of the outer segment rings 62, 64, the milling tube 25 is fixed on the roller base body 19 tense and centered at the same time.

Durch gestrichelte Linien ist der maximale Schnittkreisdurchmesser angedeutet, sowie die minimale Fräsbreite.The maximum cutting circle diameter is by dashed lines indicated, as well as the minimum milling width.

Die Fign. 6 und 7 zeigen eine alternative radiale Abstützung des Fräsrohres 25 auf den Walzengrundkörper 19. Wie aus Fig. 6 ersichtlich, liegt bei diesem Ausführungsbeispiel das Befestigungselement 28 axial bündig an dem stirnseitigen Ende 43 des Walzengrundkörpers 19 ohne Spalt an.The figures 6 and 7 show an alternative radial support of the milling tube 25 on the roller base body 19. As from FIG. 6 can be seen, the fastener is in this embodiment 28 axially flush at the front end 43 of the Roller base body 19 without a gap.

An dem freien Ende des Walzengrundkörpers 19 ist ein zylindrisches Führungselement 26 verschweißt, das mit enger Passung an der inneren Mantelfläche 44 des Fräsrohrs 25 anliegt. Desweiteren ist die innere Mantelfläche 44 des Fräsrohres 25 an seinem freien Ende mit einer Schutzhülse 39 geschützt, so dass das von der Fräswalze 25 gelöste Material nicht die innere Mantelfläche 44 des Fräsrohres 25 beschädigen kann. Vorzugsweise ist die Schutzhülse 39 an dem Planetengetriebe 32 über einen Flansch befestigt.At the free end of the roller base body 19 is a cylindrical Guide element 26 welded to the tight fit the inner lateral surface 44 of the milling tube 25 abuts. Furthermore is the inner lateral surface 44 of the milling tube 25 on his free end protected with a protective sleeve 39, so that of the milling drum 25 loosened material not the inner surface 44 of the milling tube 25 can damage. Preferably, the Protective sleeve 39 on the planetary gear 32 via a flange attached.

In Fig. 8 ist ein alternatives Ausführungsbeispiel zu Fig. 4 dargestellt, wobei das Befestigungselement 28 mit enger Passung auf einem Flanschteil des Planetengetriebes 32 aufliegt. Ein Stützring 33 ist mit dem Walzengrundkörper 19 verschraubt und kann den Walzengrundkörper 19 an verschiedenen axialen Positionen je nach Länge des Fräsrohrs 25 montiert werden. Hierzu weist der Walzengrundkörper 19 ein Schutzrohr 38 auf, das auswechselbar und drehfest auf den Walzengrundkörper 19 montiert ist. Das Schutzrohr 38 dient dazu, den Walzengrundkörper 19 vor Beschädigungen durch das abgefräste Material zu schützen. In dem Schutzrohr 38 sind Aussparungen 37 in vorbestimmten axialen Abständen gleichmäßig auf dem Umfang verteilt angeordnet, in denen der Stützring 33 auf den Walzengrundkörper 19 montiert werden kann. Die axialen Abstände der Aussparungen 37 sind den Längen unterschiedlicher Fräsrohre 25 angepasst. Die Aussparungen 37 sind, wenn kein Stützring 33 montiert ist, mit einem Deckel 36 verschlossen, so dass auch im Bereich der Aussparungen 37 keine Beschädigung des Walzengrundkörpers 19 erfolgen kann. Vorzugsweise ist vorgesehen, dass der Stützring 33 mit einer Schutzhülse 39 kombiniert ist, die am freien Ende des Fräsrohrs 25 die innere Mantelfläche 44 schützt.FIG. 8 shows an alternative exemplary embodiment to FIG. 4 shown, the fastener 28 with a close fit rests on a flange part of the planetary gear 32. On Support ring 33 is screwed to the roller body 19 and can the roller base body 19 in different axial positions depending on the length of the milling tube 25. For this the roller base body 19 has a protective tube 38 which can be replaced and mounted non-rotatably on the roller base body 19 is. The protective tube 38 serves to roll the body 19 in front To protect damage from the milled material. In the protective tube 38 are recesses 37 in predetermined axial Spaces evenly spaced around the circumference which the support ring 33 is mounted on the roller base body 19 can be. The axial distances between the recesses 37 are Lengths of different milling tubes 25 adjusted. The cutouts 37 are, if no support ring 33 is mounted, with a cover 36 closed, so that also in the area of the recesses 37 no damage to the roller base body 19 can occur. It is preferably provided that the support ring 33 with a Protective sleeve 39 is combined, which is at the free end of the milling tube 25 protects the inner lateral surface 44.

Fig. 9 zeigt einen Schnitt entlang der Linie IX-IX in Fig. 8. Der Stützring 33 besteht aus zwei Hälften, die mit Hilfe von Verschraubungen 47 auf dem Walzengrundkörper 19 gegeneinander festgeschraubt werden können. Dabei greifen Vorsprünge 35 des Stützrings 33 in die Aussparungen 37 des Schutzrohr 38 ein. Die Stützringhälften können an den Vorsprüngen 35 mit dem Walzengrundkörper 19 verschraubt sein. Zum axialen Verlagern des Stützrings 33 werden die Verschraubungen 47 nach dem Entfernen des Fräsrohrs 25 gelöst, so dass die beiden Hälften des Stützrings 33 zumindest so weit auseinandergezogen werden können, dass der Stützring 33 über das Schutzrohr 38 geschoben werden kann. Zum Auseinanderspreizen der beiden Hälften des Stützrings 33 dienen Drückschrauben 48, mit deren Hilfe der Stützring 33 ohne großen Kraft- und Zeitaufwand an einer anderen axialen Stelle des Walzengrundkörpers 19 montiert werden kann, ohne die Verschraubungen 47 vollständig zu lösen. Die Aussparungen 37 sind in dem Schutzrohr 38 axial so angeordnet, dass die mit dem Stützring 33 gekoppelte Schutzhülse 39 für die innere Mantelfläche 44 des Fräsrohres jeweils bündig mit dem freien Ende des jeweils eingesetzten Fräsrohrs 25 abschließt.FIG. 9 shows a section along the line IX-IX in FIG. 8. The support ring 33 consists of two halves, which by means of Screw connections 47 on the roller base body 19 against each other can be screwed tight. Here, projections 35 of the Support ring 33 in the recesses 37 of the protective tube 38. The Support ring halves can on the projections 35 with the roller base 19 screwed. For axial displacement of the Support ring 33, the screw connections 47 after removal of the milling tube 25 released, so that the two halves of the support ring 33 can be pulled apart at least as far, that the support ring 33 are pushed over the protective tube 38 can. For spreading the two halves of the support ring apart 33 serve pressure screws 48, with the help of the support ring 33rd on another axial without much effort and time Place of the roller body 19 can be mounted without the Loosen screw connections 47 completely. The recesses 37 are arranged axially in the protective tube 38 so that the Support ring 33 coupled protective sleeve 39 for the inner lateral surface 44 of the milling tube each flush with the free end of the each used milling tube 25 completes.

Claims (28)

  1. A milling roller comprising a roller base body (19) driven by a milling roller drive device (11 to 15) via a transmission unit (32), and a one-pieced milling tube (25) to be coaxially mounted from one side on the roller base body (19) and to be attached in a manner allowing exchange thereof, the milling tube carrying cutting tools on its outer surface (46), characterized in that the milling tube (25) comprises fastening elements (28), radially projecting from the inner surface (44) of the milling tube (25), by which the milling tube (25) can be mounted in a rotationally fixed manner to the roller base body (19) or to a member connected to the roller base body (19).
  2. The device according to claim 1, characterized in that the fastening elements (28) are arranged on at least one end side of the milling tube (25).
  3. The device according to any one of claims 1 or 2, characterized in that the milling tube (25) is fastened to an end side of the roller base body (19) and is radially supported on the other end side.
  4. The device according to any one of claims 1 to 3, characterized in that the fastening elements (28) comprise flange members projecting radially inward from the milling tube (25).
  5. The device according to any one of claims 1 to 4, characterized in that the milling tube (25) is arranged at a radial distance from the roller base body.
  6. The device according to any one of claims 1 to 5, characterized in that the milling tube (25) axially projects relative to the roller base body (19).
  7. The device according to any one of claims 1 to 6, characterized in that the member connected to the roller base body (19) comprises the transmission unit (32) integrated into the roller base body (19).
  8. The device according to any one of claims 1 to 7, characterized in that the milling tube (25) is radially supported at two axially spaced positions on the roller base body (19).
  9. The device according to claim 8, characterized in that the support comprises radial guide elements (26;33;42) fastened either radially outside on the roller base body (19) or radially inside on the milling tube (25) or are arranged between the roller base body (19) and the milling tube (25).
  10. The device according to claim 8, characterized in that the support comprises radial guide elements (42), wherein the guide elements (42) are integrally connected to the at least one fastening element (28).
  11. The device according to claim 9, characterized in that the support comprises radial guide elements (26), wherein the guide elements (26) are arranged on the free end side of the roller base body (19).
  12. The device according to any one of claims 9 or 11, characterized in that the radial guide elements can comprise radially acting tensioning elements (60,62,64).
  13. The device according to any one of claims 1 to 12, characterized in that, between the milling tube (25) and the roller base body (19), at least one support ring (33) is arranged as a radial guiding element.
  14. The device according to claim 13, characterized in that the at least one support ring (33) comprises at least two radially tensioned segment rings (60,62,64).
  15. The device according to claim 13 or 14, characterized in that the at least one support ring (33) is arranged for axial displacement relative to the roller base body (19) and the milling tube (25).
  16. The device according to claim 14 or 15, characterized in that the segment rings (62,62,64) are wedge-shaped in cross section.
  17. The device according to any one of claims 13 to 16, characterized in that the at least one support ring (33) comprises a central ring (60) having a conical shape in cross section and arranged to be axially tensioned against a radially outer ring (62) and a radially inner ring (64) which have an opposite conical shape in cross section, and pressing the outer ring (62) against the milling tube (25) and the inner ring (64) against the roller base body (19).
  18. The device according to any one of claims 13 to 17, characterized in that the at least one support ring (33) is divided into two or more parts in the circumferential direction.
  19. The device according to any one of claims 1 to 18, characterized in that the transmission unit (32) is arranged at the end of the roller base body (19) facing toward the milling roller drive device (11 to 15).
  20. The device according to any one of claims 1 to 18, characterized in that the transmission unit (32) is arranged at the end of the roller base body (19) facing away from the milling roller drive device (11 to 15), the transmission unit (32) being connected to the milling roller drive device (11 to 15) by a shaft (56) guided through the roller base body (19).
  21. The device according to any one of claims 1 to 20, characterized in that the roller base body (19) is supported in two side walls (16,17) of a roller box (31), that the side wall (17) facing away from the milling roller drive device (11 to 15) can be displaced by a pivoting or axis-parallel movement, and that the pivotable side wall (17) in the closed condition receives the movable bearing (24) of the roller base body (19).
  22. The device according to claim 21, characterized in that the movable bearing (24) comprises an outwardly tapering guide member (40) and that the side wall (17) comprises a correspondingly tapering recess (41) receiving the guide member (40).
  23. The device according to any one of claims 1 to 22, characterized in that the roller base body (19) is supported in two side walls (16,17) of a roller box (31), that the machine cover (21) arranged on the milling roller drive device (11 to 15) is provided with openings (23) allowing access to fastening elements (20) between the side wall (16) facing toward the milling roller drive device (11 to 15) and the transmission unit (32) without a demounting of machine parts.
  24. The device according to any one of claims 1 to 23, characterized in that the free end of the milling tube (25) is provided with a protective sleeve (39) for the inner surface (44).
  25. The device according to claims 13 and 24, characterized in that the protective sleeve (39) projects from the support ring (33).
  26. The device according to any one of claims 1 to 25, characterized in that the roller base body (19) is surrounded by a protective tube (38).
  27. The device according to claims 13 and 26, characterized in that the protective tube (38) comprises recesses (37) arranged in a uniform distribution at predetermined axial distances on the circumference, for receiving the support ring (33).
  28. A construction machine, preferably comprising a machine frame (2), having arranged or supported therein a milling roller (18) according to any one of claims 1 to 27.
EP00949338A 1999-07-14 2000-07-14 Construction machine and milling roller Expired - Lifetime EP1194651B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19932396A DE19932396A1 (en) 1999-07-14 1999-07-14 Construction machine and milling drum
DE19932396 1999-07-14
PCT/EP2000/006715 WO2001004422A1 (en) 1999-07-14 2000-07-14 Construction machine and milling roller

Publications (3)

Publication Number Publication Date
EP1194651A1 EP1194651A1 (en) 2002-04-10
EP1194651B1 true EP1194651B1 (en) 2002-08-28
EP1194651B2 EP1194651B2 (en) 2011-09-14

Family

ID=7914411

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00949338A Expired - Lifetime EP1194651B2 (en) 1999-07-14 2000-07-14 Construction machine and milling roller

Country Status (18)

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US (1) US6877818B1 (en)
EP (1) EP1194651B2 (en)
JP (1) JP4679015B2 (en)
KR (1) KR100740559B1 (en)
CN (1) CN1143919C (en)
AT (1) ATE222976T1 (en)
AU (1) AU770129B2 (en)
BR (1) BR0012437B1 (en)
CA (1) CA2378118C (en)
DE (3) DE19932396A1 (en)
ES (1) ES2181660T5 (en)
HK (1) HK1047778B (en)
MX (1) MXPA02000352A (en)
NO (1) NO316777B1 (en)
PL (1) PL206825B1 (en)
RU (1) RU2241099C2 (en)
TR (1) TR200200047T2 (en)
WO (1) WO2001004422A1 (en)

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Also Published As

Publication number Publication date
PL352152A1 (en) 2003-07-28
JP4679015B2 (en) 2011-04-27
KR100740559B1 (en) 2007-07-18
EP1194651A1 (en) 2002-04-10
BR0012437B1 (en) 2009-05-05
CA2378118A1 (en) 2001-01-18
JP2003504537A (en) 2003-02-04
ES2181660T5 (en) 2012-02-03
HK1047778A1 (en) 2003-03-07
US6877818B1 (en) 2005-04-12
ATE222976T1 (en) 2002-09-15
CN1360653A (en) 2002-07-24
NO316777B1 (en) 2004-05-03
NO20020048D0 (en) 2002-01-07
AU6273300A (en) 2001-01-30
DE50000427D1 (en) 2002-10-02
NO20020048L (en) 2002-03-12
WO2001004422A1 (en) 2001-01-18
EP1194651B2 (en) 2011-09-14
RU2241099C2 (en) 2004-11-27
CN1143919C (en) 2004-03-31
PL206825B1 (en) 2010-09-30
TR200200047T2 (en) 2002-05-21
CA2378118C (en) 2006-09-05
AU770129B2 (en) 2004-02-12
BR0012437A (en) 2002-04-02
MXPA02000352A (en) 2002-07-02
HK1047778B (en) 2004-08-13
KR20020025190A (en) 2002-04-03
ES2181660T3 (en) 2003-03-01
DE19932396A1 (en) 2001-02-01
DE20023999U1 (en) 2008-11-20

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