EP2374936B1 - Mill cylinder for a floor milling machine and floor milling machine - Google Patents
Mill cylinder for a floor milling machine and floor milling machine Download PDFInfo
- Publication number
- EP2374936B1 EP2374936B1 EP11002790.1A EP11002790A EP2374936B1 EP 2374936 B1 EP2374936 B1 EP 2374936B1 EP 11002790 A EP11002790 A EP 11002790A EP 2374936 B1 EP2374936 B1 EP 2374936B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- milling
- face
- drum
- hollow
- cylindrical drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000003801 milling Methods 0.000 title claims description 140
- 239000000463 material Substances 0.000 claims description 17
- 239000002689 soil Substances 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
- B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
- B65H23/0251—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/11—Details of cross-section or profile
- B65H2404/115—Details of cross-section or profile other
- B65H2404/1151—Details of cross-section or profile other brush
Definitions
- the invention relates to a milling drum according to the type specified by the preamble of claim 1.
- the invention also relates to a ground milling machine with at least one such milling drum.
- Milling rollers of the type in question are used for crushing and / or removing a soil material, in particular a compacted or solid soil material, such. B. a concrete or tar cover. Often such milling drums are used to remove or partially remove a pavement (or the like). Such milling rollers are z. B. from the DE 698 24 340 T2 , of the US 5,775,781 B and the DE 296 13 658 U known.
- a disadvantage of the known from the prior art milling rollers of the type in question that they are exposed in milling especially at the front sides of the roller body (also referred to as bandage) a heavy wear. Especially when cornering with a relatively small radius of curvature (eg. Free cutting of manhole covers), there is a strong abrasion on the inside curve end of the bandage by the formed milling edge in the soil material. The abrasion is intensified by an undercut in the soil material (so-called undercut) with respect to the milling edge. Attempts are currently being made to protect the faces of the bandage from excessive wear by attaching wear plates. However, this is only partially satisfactory.
- a disadvantage of the known from the prior art milling rollers of the type in question is that more milled material adheres in the Fräswalzenkasten.
- the invention is therefore based on the object, such a further develop a milling drum of the type in question, that the frontal wear is reduced to the bandage.
- a frontal Fräsm facedel is arranged, which projects with respect to this end face and which is intended to cut at least partially free in the milling operation, the collision area between this end face and the soil material to be processed.
- at least one such frontal milling cutter is arranged on each end face of the hollow cylindrical bandage.
- the milling drum according to the invention comprises a hollow cylindrical and axially longitudinally extending roller body, the so-called.
- Bandage which is defined with respect to its longitudinal axis by a bandage inner radius and by a Bandagenau usradius.
- On the outer peripheral surface or the lateral surface of the hollow cylindrical bandage a plurality of milling bits for crushing and / or removal of soil material are arranged.
- At least one face milling cutter is arranged which protrudes from the respective end face or protrudes outwards from this end face and which protects the end face in question against direct, abrasive contact with the soil material to be machined in the milling operation in that the contact region or collision area between this end face of the hollow cylindrical bandage and the soil material is quasi cleared or cut free by this at least one frontal milling chisel.
- the relevant face of the hollow cylindrical bandage at least partially protected from abrasion, whereby excessive wear on the relevant end face, as well as any Meiselhaltern and welds on the respective end face, avoided or at least significantly reduced.
- An essential aspect of the invention is the direct protection of the respective face of the hollow cylindrical bandage by one or more frontal cutting chisel, which is why the Milling roller according to the invention especially for cornering with a relatively small radius of curvature (eg. Free cutting of manhole covers) is suitable, despite the given undercut on the milling edge.
- a relatively small radius of curvature eg. Free cutting of manhole covers
- a plurality of the front-side milling bits are present, which are distributed in a circumferential direction and distributed in particular distributed at equal intervals.
- At least one of the front-side milling tools is provided on at least one end face of the hollow-cylindrical bandage
- Longitudinal axis of the hollow cylindrical bandage are arranged at a different radial distance.
- the longitudinal axis of the hollow cylindrical drum corresponds to the axis of rotation.
- the bandage thickness is the radial distance between the inner bandage bandage and the bandage outer radius.
- each case for a plurality of milling bits (ie in each case at least two) of the end-face milling tools, which are arranged at a different radial distance with respect to the longitudinal axis of the hollow cylindrical bandage, these being different milling tools in a radial distance Circumferential direction alternately or alternately distributed and distributed in particular distributed at equal intervals.
- At least one end face of the hollow cylindrical bandage of at least one of the frontal side chisels in the radial direction (with respect to the longitudinal axis and the axis of rotation of the hollow cylindrical bandage) approximately centrally between the inner bandage bandage and the outer bandage surface or between the inner peripheral surface and the outer peripheral surface hollow cylindrical bandage is arranged.
- the cutting circle generated by this frontal cutting tool is located approximately in the center of the annular end face of the hollow cylindrical bandage.
- At least one of the front-side cutting tools projects radially outward (with respect to the longitudinal axis or the axis of rotation of the hollow cylindrical bandage) over the bandage outer radius or over the outer peripheral surface. Due to this radial projection, the relevant end face is even better protected against abrasion.
- the radial projection is in the range of 5 to 15 mm and is in particular about 10 mm. This information relates to an effective distance caused by the milling tip of the front-side milling cutter.
- At least one of the end faces of the hollow cylindrical bandage at least one of the front-side cutting chisel projects radially inward over the bandage inner radius or over the inner circumferential surface. Due to this radial projection, the relevant end face is even better protected against abrasion. The radial projection the end face in question is even better protected against abrasion. The radial projection is in the range of 5 to 15 mm and is in particular about 10 mm. This information relates to an effective distance caused by the milling tip of the front-side milling cutter.
- At least one of the end face of the hollow cylindrical bandage is arranged with an angle of attack on at least one end face of the hollow cylindrical bandage.
- the angle can z. B. be defined as the angle of inclination of the Fräsm effetell Kunststoffsachse with respect to a circumferential direction or direction of rotation of the hollow cylindrical drum in the milling operation.
- the hollow cylindrical bandage is formed directly in the bandage at the relevant end face.
- the hollow cylindrical bandage is formed correspondingly on the relevant end face and has a pocket, as explained in more detail below in connection with the figures.
- At least one of the front side of the hollow cylindrical bandage at least one of the frontal side milling cutter is formed as a replaceable cutting chisel.
- Chisel change holder is arranged on the hollow cylindrical bandage, on which the replaceable frontal cutting chisel is attached.
- the axial longitudinal extent of the milling drum is greater than the (maximum) diameter of this milling drum.
- the axial longitudinal extent is greater by a multiple several times.
- the axial longitudinal extension of the milling drum is smaller than the (maximum) diameter of this milling drum.
- a milling drum can also be referred to as a milling rotor.
- the solution of the problem also extends to a ground milling machine with a control station (large milling machine) comprising at least one milling drum according to the invention.
- a control station large milling machine
- This is in particular a road milling machine.
- the solution of the problem also extends to a hand-held ground milling machine (compact milling machine) comprising at least one milling drum according to the invention.
- a hand-held ground milling machine compact milling machine
- This is in particular a road milling machine.
- Fig. 1 shows a generally designated 1 inventive milling drum.
- To milling drum 1 includes a roller body is formed as a hollow cylindrical bandage 2 and on the outer peripheral surface or lateral surface 22 a plurality of milling bits 3 and 4 are arranged for crushing and / or removal of a soil material.
- the chisels 3 and 4 are, for example, interchangeable milling chisels, which are fastened to the bandage 2 by means of chisel change holders 31 and 41.
- the bit changer 31 and 41 are in turn z. B. welded to the bandage 2.
- the longitudinal axis of the milling drum 1 and the drum 2 is indicated by L.
- the longitudinal axis L coincides with the axis of rotation.
- the direction of rotation (or direction of rotation or milling direction) of the milling drum 1 for the milling operation is indicated by D.
- the milling bits 3 are aligned with their Fräsm effetell Kunststoffsachsen example, essentially in the direction of rotation D.
- the cutting tools 3 may also be angled with respect to the direction of rotation D.
- the left end side of the bandage 2 is designated.
- the angled and projecting beyond the end face 21 Fräsm administratel 4 serve to produce a defined milling edge in the soil material to be processed. However, no protection for the end 21 can be achieved by means of this cutting bit 4.
- two end milling tools 5a and 5b are arranged in the frontal region.
- the front-side milling tools 5a and 5b project beyond the left end face 21 by a defined amount x (eg several millimeters) and are intended to at least partially free or clear the collision area between this end face 21 and the soil material to be machined in milling operation in order to avoid a direct contact between the end face 21 and the ground material remaining in the milling process substantially.
- a radial section T corresponds substantially to the thickness of the bandage 2).
- the front-side milling tools 5a and 5b can cut free an area which exceeds this radial section T radially inward and / or radially outward.
- the frontal side milling tools 5a and 5b are also designed as replaceable milling bits, which are fastened to the bandage 2 by means of bit changers 51.
- the bit change holders 51 are arranged in pockets 6a and 6b, as described below in connection with FIGS Fig. 4 explained in more detail.
- the front-side Fräsm facedel 5a and 5b are angled with an angle ⁇ relative to the direction of rotation D and inclined relative to the plane of the left end face 21 to the outside, as very well from the illustration of Fig. 1 seen.
- the angle of attack ⁇ can be the same or different for both front-side milling tools 5a and 5b.
- the number of two frontal milling bits 5a and 5b is merely exemplary. For milling drums with a small diameter, a face milling cutter may be sufficient. For large diameter milling drums or thick drum drums, more than two frontal chisels may be required to cut the collision area freely.
- Fig. 3 shows a plan view of the left end face 21 of the milling drum 1, as shown in the Fig. 1 with A specified direction.
- the bandage 2 is defined by an inner peripheral surface having a bandage inner radius Ri and an outer circumferential surface 22 having a bandage outer radius Ra.
- K3 denotes an external milling or cutting circle, which is produced in the milling operation by the milling tool 3 arranged on the outer circumferential surface 22 of the bandage 2.
- K4 designates a lateral milling or cutting circle, which is produced in the milling operation by the milling bit 4, which is inclined slightly outwards relative to the left end face 21, which should lead to a clean milling edge in the soil material.
- the end face 21 of the bandage 2 can not be protected against abrasion with the milling tools 4.
- the frontal milling bits 5a and 5b are provided.
- the frontal milling cutter 5a and 5b offset by about 180 ° in the frontal region of the bandage 2 are arranged.
- K5b designates the milling or cutting circle of the front-side milling bit 5b, which lies radially outside the outer circumferential surface 22 of the bandage 2 by a few millimeters.
- K5a designates the milling or cutting circle of the other front-side milling tool 5a, which is located approximately in the middle between the inner peripheral surface and the outer peripheral surface 22 of the drum 2.
- the front-side milling tool 5a or another front-side milling tool could also be arranged so that the milling or cutting circle Kx resulting in the milling operation radially inside the inner peripheral surface the bandage 2 is located.
- the milling tips and thus the points of action of the frontal cutting tools 5a and 5b are thus at different radial distances to the longitudinal axis or axis of rotation L.
- the relevant left end face 21 of the drum 2 is protected from abrasion in milling operation, creating a Excessive wear on this end face and any Meiselhaltern or chisel change holders 31 and 41 and welds in the region of this end face 21 is avoided or at least greatly reduced.
- corresponding end milling tools are also provided on the other end face of the milling drum 1.
- the Fräsm accommodateel 3 and 4 are inclined with respect to a radial direction r, wherein the laterally outwardly inclined Fräsm composedel 4 are more inclined than the Fräsm facedel 3 and wherein the milling tips in each case in the direction of rotation U and in the circumferential direction have u.
- the front-side cutting tools 5a and 5b are substantially inclined with respect to the radial direction r and in the illustration shown have a tangential orientation with respect to the bandage 2, the milling tips pointing in the circumferential direction u.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- Structural Engineering (AREA)
- Road Repair (AREA)
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Description
Die Erfindung betrifft eine Fräswalze gemäß der durch den Oberbegriff des Anspruchs 1 angegebenen Art. Die Erfindung betrifft ferner auch eine Bodenfräsmaschine mit wenigstens einer solchen Fräswalze.The invention relates to a milling drum according to the type specified by the preamble of
Fräswalzen der betreffenden Art dienen zum Zerkleinern und/oder Abtragen eines Bodenmaterials, insbesondere eines verdichteten oder festen Bodenmaterials, wie z. B. einer Beton- oder Teerdecke. Häufig werden solche Fräswalzen zur Entfernung oder teilweisen Entfernung eines Straßenbelags (oder dergleichen) eingesetzt. Solche Fräswalzen sind z. B. aus der
Nachteilig an den aus dem Stand der Technik bekannten Fräswalzen der betreffenden Art ist, dass diese im Fräsbetrieb vor allem an den Stirnseiten des Walzengrundkörpers (auch als Bandage bezeichnet) einem starken Verschleiß ausgesetzt sind. Vor allem bei Kurvenfahrten mit verhältnismäßig kleinem Kurvenradius (bspw. Freifräsen von Kanaldeckeln) kommt es zu einer starken Abrasion an der kurveninneren Stirnseite der Bandage durch die gebildete Fräskante im Bodenmaterial. Die Abrasion wird durch eine sich im Bodenmaterial einstellende Unterschneidung (sog. Hinterschnitt) bezüglich der Fräskante verstärkt. Gegenwärtig wird versucht, die Stirnseiten der Bandage durch das Anbringen von Verschleißblechen vor einem übermäßigen Verschleiß zu schützen. Dies ist jedoch nur bedingt zufriedenstellend. Nachteilig an den aus dem Stand der Technik bekannten Fräswalzen der betreffenden Art ist ferner, dass mehr Fräsgut im Fräswalzenkasten anhaftet.A disadvantage of the known from the prior art milling rollers of the type in question that they are exposed in milling especially at the front sides of the roller body (also referred to as bandage) a heavy wear. Especially when cornering with a relatively small radius of curvature (eg. Free cutting of manhole covers), there is a strong abrasion on the inside curve end of the bandage by the formed milling edge in the soil material. The abrasion is intensified by an undercut in the soil material (so-called undercut) with respect to the milling edge. Attempts are currently being made to protect the faces of the bandage from excessive wear by attaching wear plates. However, this is only partially satisfactory. A disadvantage of the known from the prior art milling rollers of the type in question is that more milled material adheres in the Fräswalzenkasten.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Fräswalze der betreffenden Art derart weiter zu entwickeln, dass der stirnseitige Verschleiß an der Bandage verringert wird.The invention is therefore based on the object, such a further develop a milling drum of the type in question, that the frontal wear is reduced to the bandage.
Diese Aufgabe wird bei einer Fräswalze der betreffenden Art erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Hiernach ist u.a. vorgesehen, dass an der hohlzylindrischen Bandage im Bereich wenigstens einer Stirnseite wenigstens ein stirnseitiger Fräsmeißel angeordnet ist, der bezüglich dieser Stirnseite übersteht und der dazu vorgesehen ist, im Fräsbetrieb den Kollisionsbereich zwischen dieser Stirnseite und dem zu bearbeitenden Bodenmaterial zumindest teilweise frei zu schneiden. Bevorzugt ist an jeder Stirnseite der hohlzylindrischen Bandage wenigstens ein solcher stirnseitiger Fräsmeißel angeordnet.This object is achieved according to the invention in a milling drum of the type concerned by the features of
Die erfindungsgemäße Fräswalze umfasst einen hohlzylindrischen und sich axial längserstreckenden Walzengrundkörper, die sog. Bandage, die bezüglich ihrer Längsachse durch einen Bandageninnenradius und durch einen Bandagenaußenradius definiert ist. An der Außenumfangsfläche bzw. der Mantelfläche der hohlzylindrischen Bandage sind mehrere Fräsmeißel zum Zerkleinern und/oder Abtragen von Bodenmaterial angeordnet. Ferner ist erfindungsgemäß im Bereich wenigstens einer kreisringförmigen Stirnseite der hohlzylindrischen Bandage wenigstens ein stirnseitiger Fräsmeißel angeordnet, der von der betreffenden Stirnseite abragt bzw. von dieser Stirnseite nach außen übersteht und der im Fräsbetrieb die betreffende Stirnseite vor einem direkten abrasiven Kontakt mit dem zu bearbeitenden Bodenmaterial schützt, indem der Kontaktbereich bzw. Kollisionsbereich zwischen dieser Stirnseite der hohlzylindrischen Bandage und dem Bodenmaterial durch diesen wenigstens einen stirnseitigen Fräsmeißel quasi freigeräumt bzw. freigeschnitten wird. Hierdurch wird je nach Anordnung und Ausbildung eines solchen stirnseitigen Fräsmeißels die betreffende Stirnseite der hohlzylindrischen Bandage zumindest teilweise vor Abrasion geschützt, wodurch ein übermäßiger Verschleiß an der betreffenden Stirnseite, sowie an etwaigen Meiselhaltern und Schweißnähten an der betreffenden Stirnseite, vermieden oder zumindest deutlich verringert wird.The milling drum according to the invention comprises a hollow cylindrical and axially longitudinally extending roller body, the so-called. Bandage, which is defined with respect to its longitudinal axis by a bandage inner radius and by a Bandagenaußenradius. On the outer peripheral surface or the lateral surface of the hollow cylindrical bandage a plurality of milling bits for crushing and / or removal of soil material are arranged. Furthermore, according to the invention, in the area of at least one annular end face of the hollow cylindrical bandage, at least one face milling cutter is arranged which protrudes from the respective end face or protrudes outwards from this end face and which protects the end face in question against direct, abrasive contact with the soil material to be machined in the milling operation in that the contact region or collision area between this end face of the hollow cylindrical bandage and the soil material is quasi cleared or cut free by this at least one frontal milling chisel. As a result, depending on the arrangement and design of such an end milling cutter the relevant face of the hollow cylindrical bandage at least partially protected from abrasion, whereby excessive wear on the relevant end face, as well as any Meiselhaltern and welds on the respective end face, avoided or at least significantly reduced.
Ein wesentlicher Aspekt der Erfindung ist der direkte Schutz der betreffenden Stirnseite der hohlzylindrischen Bandage durch einen oder mehrere stirnseitige Fräsmeißel, weshalb sich die erfindungsgemäße Fräsewalze insbesondere auch für Kurvenfahrten mit verhältnismäßig kleinem Kurvenradius (bspw. Freifräsen von Kanaldeckeln) eignet, trotz der gegebenen Hinterschneidung an der Fräskante.An essential aspect of the invention is the direct protection of the respective face of the hollow cylindrical bandage by one or more frontal cutting chisel, which is why the Milling roller according to the invention especially for cornering with a relatively small radius of curvature (eg. Free cutting of manhole covers) is suitable, despite the given undercut on the milling edge.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage mehrere der stirnseitigen Fräsmeißel vorhanden sind, die in einer Umfangsrichtung verteilt und insbesondere in gleichmäßigen Abständen verteilt angeordnet sind.According to a preferred development it is provided that on at least one end face of the hollow cylindrical bandage a plurality of the front-side milling bits are present, which are distributed in a circumferential direction and distributed in particular distributed at equal intervals.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage wenigstens zwei der stirnseitigen Fräsmeißel vorgesehen sind, die bezüglich der Längsachse der hohlzylindrischen Bandage in einem unterschiedlichen radialen Abstand angeordnet sind. Die Längsachse der hohlzylindrischen Bandage entspricht der Rotationsachse. Mit dem radialen Abstand ist der Wirkabstand eines stirnseitigen Fräsmeißels, d. h. der Abstand der Frässpitze bzw. des Wirkpunkts des Fräsmeißels von der Längsachse bzw. der Rotationsachse gemeint, der mit einem bestimmten Schnittkreis einhergeht. Durch einen unterschiedlichen radialen Abstand der stirnseitigen Fräsmeißel bewegen sich diese im Fräsbetrieb auf verschiedenen Umfangsbahnen, wodurch unterschiedliche Schnittkreise erzeugt werden. Dies kann insbesondere bei dickeren hohlzylindrischen Bandagen von Vorteil sein. Die Bandagendicke ist der radiale Abstand zwischen dem Bandageninnenradius und dem Bandagenaußenradius.According to a preferred refinement, it is provided that at least one of the front-side milling tools is provided on at least one end face of the hollow-cylindrical bandage Longitudinal axis of the hollow cylindrical bandage are arranged at a different radial distance. The longitudinal axis of the hollow cylindrical drum corresponds to the axis of rotation. With the radial distance of the effective distance of an end-face milling chisel, ie the distance of the milling tip or the point of action of the milling chisel of the longitudinal axis or the axis of rotation is meant, which is associated with a particular cutting circle. By a different radial distance of the frontal cutting chisel these move in milling on different circumferential paths, creating different cutting circles are generated. This may be particularly advantageous for thicker hollow cylindrical bandages. The bandage thickness is the radial distance between the inner bandage bandage and the bandage outer radius.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass von den stirnseitigen Fräsmeißeln, die bezüglich der Längsachse der hohlzylindrischen Bandage in einem unterschiedlichen radialen Abstand angeordnet sind, jeweils mehrere Fräsmeißel (d. h. jeweils mindestens zwei) vorgesehen sind, wobei diese bezüglich ihres radialen Abstands unterschiedlichen Fräsmeißel in einer Umfangsrichtung wechselweise bzw. abwechselnd verteilt und insbesondere in gleichmäßigen Abständen verteilt angeordnet sind.According to a preferred embodiment, provision is made in each case for a plurality of milling bits (ie in each case at least two) of the end-face milling tools, which are arranged at a different radial distance with respect to the longitudinal axis of the hollow cylindrical bandage, these being different milling tools in a radial distance Circumferential direction alternately or alternately distributed and distributed in particular distributed at equal intervals.
Erfindungsgemäß ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage wenigstens einer der stirnseitigen Fräsmeißel in radialer Richtung (bezüglich der Längsachse bzw. der Rotationsachse der hohlzylindrischen Bandage) in etwa mittig zwischen dem Bandageninnenradius und dem Bandagenaußenradius bzw. zwischen der Innenumfangsfläche und der Außenumfangsfläche der hohlzylindrischen Bandage angeordnet ist. Der von diesem stirnseitigen Fräsmeißel erzeugte Schnittkreis liegt in etwa mittig der kreisringförmigen Stirnseite der hohlzylindrischen Bandage.According to the invention, it is provided that at least one end face of the hollow cylindrical bandage of at least one of the frontal side chisels in the radial direction (with respect to the longitudinal axis and the axis of rotation of the hollow cylindrical bandage) approximately centrally between the inner bandage bandage and the outer bandage surface or between the inner peripheral surface and the outer peripheral surface hollow cylindrical bandage is arranged. The cutting circle generated by this frontal cutting tool is located approximately in the center of the annular end face of the hollow cylindrical bandage.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage wenigstens einer der stirnseitigen Fräsmeißel in radialer Richtung (bezüglich der Längsachse bzw. der Rotationsachse der hohlzylindrischen Bandage) über den Bandagenaußenradius bzw. über die Außenumfangsfläche nach radial außen übersteht. Durch diesen radialen Überstand ist die betreffende Stirnseite noch besser gegen Abrasion geschützt. Der radiale Überstand liegt im Bereich von 5 bis 15 mm und beträgt insbesondere in etwa 10 mm. Diese Angaben betreffen einen durch die Frässpitze des stirnseitigen Fräsmeißels bewirkten Wirkabstand.According to a preferred development it is provided that on at least one end face of the hollow-cylindrical bandage at least one of the front-side cutting tools projects radially outward (with respect to the longitudinal axis or the axis of rotation of the hollow cylindrical bandage) over the bandage outer radius or over the outer peripheral surface. Due to this radial projection, the relevant end face is even better protected against abrasion. The radial projection is in the range of 5 to 15 mm and is in particular about 10 mm. This information relates to an effective distance caused by the milling tip of the front-side milling cutter.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage wenigstens einer der stirnseitigen Fräsmeißel in radialer Richtung über den Bandageninnenradius bzw. über die Innenumfangsfläche nach radial innen übersteht. Durch diesen radialen Überstand ist die betreffende Stirnseite noch besser gegen Abrasion geschützt. Der radiale Überstand ist die betreffende Stirnseite noch besser gegen Abrasion geschützt. Der radiale Überstand liegt im Bereich von 5 bis 15 mm und beträgt insbesondere in etwa 10 mm. Diese Angaben betreffen einen durch die Frässpitze des stirnseitigen Fräsmeißels bewirkten Wirkabstand.According to a preferred embodiment, it is provided that at least one of the end faces of the hollow cylindrical bandage at least one of the front-side cutting chisel projects radially inward over the bandage inner radius or over the inner circumferential surface. Due to this radial projection, the relevant end face is even better protected against abrasion. The radial projection the end face in question is even better protected against abrasion. The radial projection is in the range of 5 to 15 mm and is in particular about 10 mm. This information relates to an effective distance caused by the milling tip of the front-side milling cutter.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage wenigstens einer der stirnseitigen Fräsmeißel mit einem Anstellwinkel angeordnet ist. Der Anstellwinkel kann z. B. als Neigungswinkel der Fräsmeißellängsachse bezüglich einer Umfangsrichtung bzw. Umdrehungsrichtung der hohlzylindrischen Bandage im Fräsbetrieb definiert werden.According to a preferred development, it is provided that at least one of the end face of the hollow cylindrical bandage is arranged with an angle of attack on at least one end face of the hollow cylindrical bandage. The angle can z. B. be defined as the angle of inclination of the Fräsmeißellängsachse with respect to a circumferential direction or direction of rotation of the hollow cylindrical drum in the milling operation.
Erfindungsgemäß ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage wenigstens einer der stirnseitigen Fräsmeißel direkt in der Bandage an der betreffenden Stirnseite angeordnet ist. Hierzu ist die hohlzylindrische Bandage an der betreffenden Stirnseite entsprechend ausgebildet und weist eine Tasche auf, wie nachfolgend im Zusammenhang mit den Figuren noch näher erläutert.According to the invention it is provided that at least one of the end face of the hollow cylindrical bandage at least one of the front-side cutting tool is arranged directly in the bandage at the relevant end face. For this purpose, the hollow cylindrical bandage is formed correspondingly on the relevant end face and has a pocket, as explained in more detail below in connection with the figures.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass an wenigstens einer Stirnseite der hohlzylindrischen Bandage wenigstens einer der stirnseitigen Fräsmeißel als auswechselbarer Fräsmeißel ausgebildet ist. Insbesondere ist hierzu an der hohlzylindrischen Bandage ein sog. Meißelwechselhalter angeordnet, an dem der auswechselbare stirnseitige Fräsmeißel befestigt wird.According to a preferred embodiment, it is provided that at least one of the front side of the hollow cylindrical bandage at least one of the frontal side milling cutter is formed as a replaceable cutting chisel. In particular, for this purpose, a so-called. Chisel change holder is arranged on the hollow cylindrical bandage, on which the replaceable frontal cutting chisel is attached.
Nach einer bevorzugten Weiterbildung ist vorgesehen, dass die axiale Längserstreckung der Fräswalze größer als der (maximale) Durchmesser dieser Fräswalze ist. Bevorzugt ist die axiale Längserstreckung um ein mehrzahliges Vielfaches größer.According to a preferred development, it is provided that the axial longitudinal extent of the milling drum is greater than the (maximum) diameter of this milling drum. Preferably, the axial longitudinal extent is greater by a multiple several times.
Nach einer anderen bevorzugten Weiterbildung ist vorgesehen, dass die axiale Längserstreckung der Fräswalze kleiner als der (maximale) Durchmesser dieser Fräswalze ist. Eine solche Fräswalze kann auch als Fräsrotor bezeichnet werden.According to another preferred development, it is provided that the axial longitudinal extension of the milling drum is smaller than the (maximum) diameter of this milling drum. Such a milling drum can also be referred to as a milling rotor.
Die Lösung der Aufgabe erstreckt sich auch auf eine Bodenfräsmaschine mit einem Fahrstand (Großfräse), umfassend wenigstens eine erfindungsgemäße Fräswalze. Hierbei handelt es sich insbesondere um eine Straßenfräsmaschine.The solution of the problem also extends to a ground milling machine with a control station (large milling machine) comprising at least one milling drum according to the invention. This is in particular a road milling machine.
Die Lösung der Aufgabe erstreckt sich ferner auch auf eine handgeführte Bodenfräsmaschine (Kompaktfräse), umfassend wenigstens eine erfindungsgemäße Fräswalze. Hierbei handelt es sich insbesondere um eine Straßenfräsmaschine.The solution of the problem also extends to a hand-held ground milling machine (compact milling machine) comprising at least one milling drum according to the invention. This is in particular a road milling machine.
Nachfolgend wird die Erfindung beispielhaft anhand der Figuren näher beschrieben. Es zeigen:
- Fig. 1
- den Stirnseitenbereich einer erfindungsgemäßen Fräswalze in einer Seitenansicht;
- Fig. 2
- eine perspektivische Teilansicht der linken Stirnseite der Fräswalze aus der
Fig. 1 , gemäß der in derFig. 1 angegebenen Blickrichtung (A); - Fig. 3
- eine Draufsicht auf die linke Stirnseite der Fräswalze aus der
Fig. 1 , gemäß der in derFig. 1 angegebenen Blickrichtung (A); und - Fig. 4
- eine perspektivische Ansicht auf die linke Stirnseite der Fräswalze aus der
Fig. 1 .
- Fig. 1
- the front side region of a milling drum according to the invention in a side view;
- Fig. 2
- a partial perspective view of the left end of the milling drum from the
Fig. 1 , according to the in theFig. 1 indicated viewing direction (A); - Fig. 3
- a plan view of the left end face of the milling drum from the
Fig. 1 , according to the in theFig. 1 indicated viewing direction (A); and - Fig. 4
- a perspective view of the left end of the milling drum from the
Fig. 1 ,
Zum Schutz der Stirnseite 21 der Bandage 2 im Fräsbetrieb sind im stirnseitigen Bereich zwei stirnseitige Fräsmeißel 5a und 5b angeordnet. In der in
Die stirnseitigen Fräsmeißel 5a und 5b sind ebenfalls als auswechselbare Fräsmeißel ausgeführt, die mittels von Meißelwechselhaltern 51 an der Bandage 2 befestigt sind. Die Meißelwechselhalter 51 sind in Taschen 6a und 6b angeordnet, wie nachfolgend im Zusammenhang mit der
In
Mit den Fräsmeißeln 4 kann die Stirnseite 21 der Bandage 2 jedoch nicht vor Abrasion geschützt werden. Hierzu sind die stirnseitigen Fräsmeißel 5a und 5b vorgesehen. Wie aus der Darstellung der
Mit K5b ist der Fräs- bzw. Schnittkreis des stirnseitigen Fräsmeißels 5b bezeichnet, der um wenige Millimeter radial außerhalb der Außenumfangsfläche 22 der Bandage 2 liegt. Mit K5a ist der Fräs- bzw. Schnittkreis des anderen stirnseitigen Fräsmeißels 5a bezeichnet, der sich in etwa mittig zwischen der Innenumfangsfläche und der Außenumfangsfläche 22 der Bandage 2 befindet. In gleicher Weise könnte der stirnseitige Fräsmeißel 5a oder ein weiterer stirnseitiger Fräsmeißel auch so angeordnet sein, dass sich der im Fräsbetrieb ergebende Fräs- bzw. Schnittkreis Kx radial innerhalb der Innenumfangsfläche der Bandage 2 befindet. Die Frässpitzen und damit die Wirkpunkte der stirnseitigen Fräsmeißel 5a und 5b befinden sich somit in unterschiedlichen radialen Abständen zur Längsachse bzw. Rotationsachse L. Durch die stirnseitigen Fräsmeißel 5a und 5b ist die betreffende linke Stirnseite 21 der Bandage 2 vor Abrasion im Fräsbetrieb geschützt, wodurch ein übermäßiger Verschleiß an dieser Stirnseite und an etwaigen Meiselhaltern bzw. Meißelwechselhaltern 31 und 41 sowie Schweißnähten im Bereich dieser Stirnseite 21 vermieden oder zumindest stark vermindert wird. Bevorzugt sind entsprechende stirnseitige Fräsmeißel auch an der anderen Stirnseite der Fräswalze 1 vorgesehen.K5b designates the milling or cutting circle of the front-
Wie ferner sehr gut aus der
In der in
Claims (11)
- A milling drum (1) for a ground milling machine for breaking up and/or removing a ground material, comprising a hollow-cylindrical drum (2) extending in an axially longitudinal direction, on the outer circumferential surface (22) of which several milling tools (3, 4) are arranged for breaking up and/or removing the ground material, wherein on the hollow-cylindrical drum (2) at least one face-side milling tool (4, 5a, 5b) protrudes (x) beyond this face side (21) in the area of at least one face side (21) of the hollow-cylindrical drum (2)
characterized in that
at least one of the face-side milling tools (5a, 5b) is arranged directly in the drum (1) on the relevant face side (21) in a pocket (6a, 6b) and is provided to at least partially cut away the collision region (T) between said face side (21) and the ground material to be processed during milling operation, and in that the at least one face-side milling tool (5a) is arranged in the radial direction (r) approximately in the middle between the inner circumferential surface and the outer circumferential surface (22) of the hollow-cylindrical drum (2), wherein the cutting circle (K5a) traced by this face-side milling tool is approximately in the middle of the ring-shaped face side of the hollow-cylindrical drum (2). - A milling drum (1) according to claim 1,
characterized in that
several face-side milling tools (5a, 5b) are provided on at least one face side (21) of the hollow-cylindrical drum (2), which tools are distributed in a circumferential direction (u) and are in particular distributed at regular intervals. - A milling drum (1) according to claim 1 or 2,
characterized in that
at least two face-side milling tools (5a, 5b) are provided on at least one face side (21) of the hollow-cylindrical drum (2), which milling tools are arranged at a different radial distance with respect to the longitudinal axis (L) of the hollow-cylindrical drum (2). - A milling drum (1) according to claim 3,
characterized in that,
of the face-side milling tools (5a, 5b) arranged at a different radial distance with respect to the longitudinal axis (L) of the hollow-cylindrical drum (2), there are respectively at least two milling tools (5a, 5b) provided that differ with respect to their radial distance, wherein these are distributed in an alternating manner in a circumferential direction (u) and are in particular arranged at regular intervals on the hollow-cylindrical drum (2). - A milling drum (1) according to one of the preceding claims,
characterized in that
at least one of the face-side milling tools (5a, 5b) protrudes radially to the outside on at least one face side (21) of the hollow-cylindrical drum (2) in the radial direction (r) beyond the outside circumferential area (22) of the hollow-cylindrical drum (2), wherein this specification relates to the effective distance traced by the tip of the face-side milling tool. - A milling drum (1) according to one of the preceding claims,
characterized in that
at least one of the face-side milling tools (5a, 5b) protrudes radially to the inside on at least one face side (21) of the hollow-cylindrical drum (2) in the radial direction (r) beyond the inside circumferential area of the hollow-cylindrical drum (2), wherein this specification relates to the effective distance traced by the tip of the face-side milling tool. - A milling drum (1) according to one of the preceding claims,
characterized in that
at least one of the face-side milling tools (5a, 5b) is arranged with an angle of attack (β) on at least one face side (21) of the hollow-cylindrical drum (2). - A milling drum (1) according to one of the preceding claims,
characterized in that
the milling tool (5a, 5b) is configured as an exchangeable milling tool on at least one face side (21) of the hollow-cylindrical drum (2). - A milling drum (1) according to one of the preceding claims,
characterized in that
its axial longitudinal extension is greater than its diameter. - A milling drum (1) according to one of the preceding claims 1 to 8,
characterized in that
its axial longitudinal extension is less than its diameter. - A ground milling machine with an operating platform or a manually controlled ground milling machine, comprising at least one milling drum (1) according to one of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010013983.1A DE102010013983B4 (en) | 2010-04-06 | 2010-04-06 | Milling roller for a ground milling machine and ground milling machine |
Publications (3)
Publication Number | Publication Date |
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EP2374936A2 EP2374936A2 (en) | 2011-10-12 |
EP2374936A3 EP2374936A3 (en) | 2014-08-20 |
EP2374936B1 true EP2374936B1 (en) | 2018-10-17 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11002790.1A Active EP2374936B1 (en) | 2010-04-06 | 2011-04-04 | Mill cylinder for a floor milling machine and floor milling machine |
Country Status (5)
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US (1) | US8672416B2 (en) |
EP (1) | EP2374936B1 (en) |
CN (1) | CN102286913B (en) |
DE (2) | DE102010013983B4 (en) |
ES (1) | ES2706390T3 (en) |
Families Citing this family (10)
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DE102012203649A1 (en) * | 2012-03-08 | 2013-09-12 | Wirtgen Gmbh | Self-propelled road milling machine for working on road surfaces, in particular large milling machine |
DE102014001921A1 (en) | 2013-02-22 | 2014-08-28 | Bomag Gmbh | Milling roller with a, in particular interchangeable, Materialleiteinrichtung and Materialleiteinrichtung for a milling drum |
CN103276658A (en) * | 2013-05-24 | 2013-09-04 | 广西玉柴重工有限公司 | Milling and planing device |
WO2015073821A1 (en) | 2013-11-15 | 2015-05-21 | Vermeer Manufacturing Company | Cutting tooth system |
DE102014015584B4 (en) * | 2014-10-21 | 2018-10-25 | Bomag Gmbh | Milling roller and ground milling machine with such a milling drum |
AU2015346526A1 (en) * | 2014-11-10 | 2017-06-01 | Vermeer Manufacturing Company | Edge cutting element for rotatable cutting drum |
USD896289S1 (en) * | 2018-07-10 | 2020-09-15 | Bomag Gmbh | Quick-change toolholder |
CN110952428A (en) * | 2019-12-02 | 2020-04-03 | 上海道基环保科技有限公司 | Tool bit for heavy machinery tool drum and wear state alarm system thereof |
DE102019135867A1 (en) | 2019-12-30 | 2021-07-01 | Wirtgen Gmbh | Removing soil cultivation method with an excavating tool inclined with respect to the advance direction and a soil cultivation machine designed to carry out the method |
CN114737456B (en) * | 2022-05-06 | 2023-08-01 | 江苏徐工工程机械研究院有限公司 | Milling rotor and milling machine |
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DE102008016673B4 (en) * | 2008-03-26 | 2014-05-15 | Allu Deutschland Gmbh | Device for milling and mixing of soils |
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2010
- 2010-04-06 DE DE102010013983.1A patent/DE102010013983B4/en active Active
- 2010-04-06 DE DE202010018288.3U patent/DE202010018288U1/en not_active Expired - Lifetime
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- 2011-04-04 US US13/079,407 patent/US8672416B2/en active Active
- 2011-04-04 EP EP11002790.1A patent/EP2374936B1/en active Active
- 2011-04-06 CN CN201110162940.7A patent/CN102286913B/en active Active
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Also Published As
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CN102286913B (en) | 2015-11-25 |
DE102010013983B4 (en) | 2016-01-21 |
DE102010013983A1 (en) | 2011-10-06 |
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US20110241408A1 (en) | 2011-10-06 |
EP2374936A3 (en) | 2014-08-20 |
CN102286913A (en) | 2011-12-21 |
US8672416B2 (en) | 2014-03-18 |
EP2374936A2 (en) | 2011-10-12 |
DE202010018288U1 (en) | 2015-08-03 |
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