EP2653612B1 - Edge protector for a street milling machine - Google Patents
Edge protector for a street milling machine Download PDFInfo
- Publication number
- EP2653612B1 EP2653612B1 EP13157055.8A EP13157055A EP2653612B1 EP 2653612 B1 EP2653612 B1 EP 2653612B1 EP 13157055 A EP13157055 A EP 13157055A EP 2653612 B1 EP2653612 B1 EP 2653612B1
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- EP
- European Patent Office
- Prior art keywords
- plug
- lug
- skid
- edge protection
- protection according
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- 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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
Definitions
- the invention relates to an edge protection for a road milling machine or the like tillage machine
- Road milling machines are used in road and road construction. They serve to remove the existing road surface completely or preferably partially.
- a milling drum is used, which is housed protected within a milling box.
- the milling drum is usually equipped with chisels, which engage the road surface in the substrate to be processed.
- At the running in the direction of the road milling machine sides of the milling box protective elements are used, which are referred to as edge protection.
- the edge protection covers the milling drum from the side and thus prevents access to the milling drum during milling operation. On the other hand, ejection of milled material into the environment is prevented.
- the edge protector stands on the road surface with a lower runner so that complete coverage of the milling drum is achieved.
- the skid pushes on the unprocessed road surface, which is located after the milling drum outside the work area. Accordingly, the edge protection thus forms an abutment which prevents a breaking of the laterally adjoining road surface during the milling process.
- the skid is composed of skid segments, which are subject to wear and therefore must be replaced after reaching their wear limit.
- the screw heads of the skid segments are sometimes exposed to the abrasive attack of removed material and are then abraded. They can then no longer be solved with the intended tool.
- it is possible that the connection surfaces between the edge protection and the skid segments are washed out. Then the skid segments can no longer be positioned exactly reproducible.
- US 2011/0315465 A1 discloses a snow clearing device. This has a conveyor spiral, with the snow can be moved in a broaching box. The broach has skids on opposite sides.
- the attachment portion of the skid segment is formed as a plug-in approach.
- the runner segment can be plugged with the plug-in approach in a suitably trained plug-in receptacle of the edge protection, so that it can be easily exchanged in rough construction site operation.
- the plug-in approach is arranged in the plug-in receptacle in a wear-protected area, so that a reproducible assignment of the skid segment is supported for edge protection.
- the skid segments can be easily inserted into the plug-in receptacles, preferably without tools.
- At least one stop surface is provided which extends transversely to the direction of insertion predetermining central longitudinal axis of the plug extension extends. Consequently, the runner segment can be inserted with its insertion projection, that is, into the edge protector, until the stop surface defines the insertion movement.
- the plug-in approach has a stop with which the insertion movement can be limited. The stop is thus accommodated wear-protected in the area of the plug-in extension.
- the assembly can be further simplified in that the plug-in approach is provided in the region of its free end with at least one integrally formed Ein Industrieszentritation.
- the plug-in approach has on opposite sides supporting flanks extending transversely to the direction of the runner segment, then a positive support in the main force direction can be achieved at the edge protection during operation.
- the support flanks are parallel to each other or they converge in the insertion direction of the plug-in approach.
- converging surface areas also results in a tapered geometry of the plug-in approach, which facilitates the introduction into the plug-in receptacle.
- the road milling machine is moved transversely to the main direction of travel.
- the plug approach on opposite sides extending in the running direction of the skid segment side surfaces having. With these side surfaces, the runner segment can be positively supported on corresponding mating surfaces of the edge protector.
- the plug approach to a running through the central longitudinal axis of the plug approach and extending transversely to the direction of the skid segment transverse central plane has an asymmetrical geometry.
- At least one projecting in the direction of projection is provided which protrudes in or opposite to the direction over the plug-in approach.
- the projection serves to bridge between standing edge protection areas between the individual segments segments and thus enables the most distance-free skid training.
- a compact design of the skid segment is supported by the fact that directly or indirectly connected to the plug-in approach, which carries the runner section.
- the runner section has a greater width than the approach.
- a high wear resistance of the skid segment can be achieved by applying a hard material element, for example a build-up weld, a cemented carbide element, a hard material coating or the like, to the runner section.
- a hard material element for example a build-up weld, a cemented carbide element, a hard material coating or the like
- a particularly preferred variant of the invention is such that a clamping element is used which has one or more elastic functional parts.
- the clamping element With the clamping element, the runner segment can be clamped in a simple manner with the edge protection, the compound can be simply joined and released due to the elasticity of the functional tion parts.
- the clamping element is held in the region of the plug-in approach, so that it is housed protected from wear.
- a particularly simple assignment of the clamping element to Kufensegment can be achieved if the plug has a receptacle in the form of a recess or recess into which the clamping element is introduced.
- the elasticity of the clamping element can also be utilized in order to achieve a tension in the receptacle, so that additional fastening measures can be dispensed with.
- the plug receptacles are pocket-shaped and open to the underside of the edge protector.
- a simple production of the edge protector is then possible if it is provided that the edge has comb-like recesses which are at least partially closed to form the receptacles with mutually parallel spaced walls.
- FIG. 1 shows an edge protector 10 for a road milling machine with a plate-like base part 10.1.
- This base part 10.1 forms a fastening side 11 for coupling to the road milling machine in the region of a milling box.
- the edge protector 10 has an edge 12.
- This edge 12 is provided with recesses, which are arranged spaced from each other via webs 13, so that a comb-like geometry results.
- walls 16, consisting of sheet metal are used.
- two walls 16 are used in each recess, which are arranged spaced apart from each other in parallel. In this way, results between the walls 16 and the webs 13, a plug-in receptacle 14, as the FIGS. 2 and 3 illustrate.
- the walls 16 are welded by welds 17 with the edge 12 of the edge protector 10. In this way, a plurality of spaced from each other in a uniform pitch arranged receptacles 14th created. These plug-in receptacles 14 are used to accommodate Kufensegmenten 30, as example closer in the FIGS. 4 to 9 are shown.
- the skid segments 30 are constructed substantially similarly in the basic structure. They have a skid portion 36 which is covered on its underside with a hard material element 37. As a hard material element 37 may, for example, be used an order consisting of metal powder. It is also conceivable that is applied to the runner section hard metal elements or a Panzersch dentation. At the runner portion 36, a projection 31 is formed.
- the lug 31 has a smaller width than the runner section 36 transversely to the running direction L running in the main movement direction of the road milling machine. In this way, on both sides of the approach 31 paragraph-like sections that form contact surfaces 36.1.
- the projection 31 has two projections 32 projecting on both sides in the running direction L via a plug projection 38.
- the projections 32 form stop surfaces 33, which pass over rounding transitions 34 in side walls 35.
- the plug-in approach 38 is limited by two extending in the direction L side surfaces 38.3.
- the side surfaces 38.3 are parallel to each other.
- the side surfaces 38.3 go without offset into the projection 31.
- the insertion projection 38 has two supporting flanks 38.2 which are perpendicular to the side surfaces 38.3 and which are mutually parallel spaced. Each supporting flank 38.2 merges via an insertion centering 38.1 into an end face 38.4.
- the clamping element 40 has elastic functional parts 42, which are formed predominantly as lamellae, as this FIG. 5 lets recognize. It is also conceivable to use a clamping element which is block-shaped and formed from an elastic material, in which case a part of this block or the whole block forms the functional part with elastic properties.
- the lamellar functional parts 42 are employed in an arrow-shaped manner with respect to one another and are inclined in the direction of the stub axle defining the central longitudinal axis M of the plug-in extension. As figure 5 can recognize, the clamping element 40, a base member 41, to which the functional parts 42 are integrally formed.
- a pocket-shaped receptacle 39 is recessed in the form of a recess.
- the clamping element 40 is inserted with its base part 41 in this receptacle 39, wherein it is supported with the base part 41 on a bottom 39.1 of the receptacle.
- the clamping element 40 is designed such that also the base part 41 has elastic properties. It can then be pressed with excess into the receptacle 39, so that no additional fastening means are required.
- the clamping element 40 may also be glued, for example, in the receptacle 39.
- the functional parts 42 are slightly above the side surface 38.3, like this FIG. 5 lets recognize. The supernatant is in FIG.
- skid segment 30 For mounting in the FIGS. 4 and 5 shown skid segment 30 in the edge protector 10 according to FIG. 1 the skid segment 30 is first recognized with its plug-in approach 38 to the downwardly open receptacle 14. The Ein Industrieszentrierungen thread 38.1 at the adjacent webs 13, so that the assembly is facilitated. Then, the runner segment 30 is inserted with its web extension 30 in the direction of the central longitudinal axis M in the plug receptacle 14. This can first be done powerless or with little effort until the functional parts 42 come on the inner sides of the walls 16 for engagement. When inserting the runner segment 30, the functional parts 42 must be elastically deformed.
- the insertion movement of the skid segment 30 into the plug-in receptacle 14 is limited by means of the abutment surfaces 33 of the protrusions 32. These attach themselves to the end faces 15 of the webs 13.
- the contact surface 36.1 of the runner section 36 is at a short distance from a front-side counter-surface 19 of the walls 16, as this FIG. 3 lets recognize.
- the face 38.4 is also at a distance from an opposite bottom surface of the plug receptacle 14.
- the assignment can be selected such that the runner segment 30 with the end face 38.4 is supported on a bottom surface of the plug receptacle 14. Accordingly, then the stop surface 33 is at a small distance to the front side of the webs 13.
- the stop geometry between the runner segment 30 and the plug receptacle 14 is protected in the plug receptacle 14 housed.
- the Clamping element 40 may alternatively be accommodated on the base part 10.1, in particular protected in the plug-in receptacle 14.
- the runner segments 30 with their hard material elements 37 drag over the substrate and are continuously worn away. After reaching the wear limit, the runner segments 30 can be easily replaced.
- window-like openings 18 are provided in the outside walls 16.
- a tool 20 can be adjusted with a Austreibdorn 21.
- the Austreibdorn 21 then supported on the contact surface 36.1 of the runner portion 36.
- a expelling force can then be introduced vertically downwards into the skid segment 30.
- the frictional connection between the inside of the wall 16 and the clamping element 14 is then separated by pushing out the runner segment 30. Subsequently, the runner segment 30 can be completely pulled out of the plug receptacle 14 and replaced with a new runner segment 30.
- FIG. 6 an alternative embodiment variant of a skid segment 30 is shown.
- the design of this skid segment 30 essentially corresponds to the skid segment 30 according to FIGS FIGS. 4 and 5 , so that reference can be made to avoid repetition of the above statements.
- the support flanks 38.2 are not parallel to each other, but V-shaped and converge toward the free end of the plug-in projection 38.
- the webs 13 are preferably designed such that they form adapted angled stop surface areas in the plug-in receptacle 14 toward the lower side Diverge towards the opening. This has the advantage that already after penetration of a small expulsion movement in the direction of the central longitudinal axis M, the support flanks 38.2 out of engagement with the corresponding mating surfaces of the webs 13 reach, so here when expelling no frictional forces arise.
- FIG. 7 shows, are in the plug-in projection 38 two pocket-shaped receptacles 39 according to the embodiment according to the FIGS. 4 and 5 brought in.
- the receptacles 39 are mutually offset in the direction of L and the elastic functional parts 42 of the clamping elements 40 are on both sides of the plug-in projection 38 before. In this way, a double-sided jamming of the plug-in projection 38 is achieved in the socket 14.
- this type of clamping is possible with all the skid segments 30.
- the skid portion 36 and thus the hard material element 37 is convex.
- FIGS. 8 and 9 a further embodiment variant of a skid segment 30 is shown. Again, reference is made to avoid repetition with respect to the same reference numerals to the above statements. In the following, only the differences will be explained.
- the plug-in approach 38 on two opposite support flanks 38.2. These first have surface areas which are connected to the stop surfaces 33 and which are at an angle to each other. These surface areas converge towards the free end of the plug-in extension 38. Following the converging surface areas, convex surface areas of the supporting flank 38.2 are connected without offset. These convex portions of the support flanks 38.2 are flush with one another via a likewise convex insertion centering. Even with this geometry, a precise and simple assignment of the plug-in projection 38 to corresponding mating surfaces of the webs 13 is possible.
- the clamping element 40 has, as this FIG. 9 shows, a base member 41, on both sides of the lamellar elastic functional parts 42 are connected.
- the elastic functional parts 42 are again made arrow-shaped for easier insertion of the plug-in projection 38 in the plug-in receptacle 14 and project slightly on both sides over the side surfaces 38.3 of the plug-in projection 38.
- the Recording 39 is excluded as a breakthrough from the insertion projection 38.
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- Mechanical Engineering (AREA)
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Component Parts Of Construction Machinery (AREA)
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Description
Die Erfindung betrifft einen Kantenschutz für eine Straßenfräsmaschine oder dergleichen BodenbearbeitungsmaschineThe invention relates to an edge protection for a road milling machine or the like tillage machine
Straßenfräsmaschinen werden im Straßen- und Wegebau eingesetzt. Sie dienen dazu den vorhandenen Fahrbahnbelag vollständig oder vorzugsweise teilweise abzutragen. Hierbei kommt eine Fräswalze zum Einsatz, die innerhalb eines Fräskastens geschützt untergebracht ist. Die Fräswalze ist üblicherweise mit Meißeln bestückt, die zum Fahrbahnabtrag in den zu bearbeiteten Untergrund eingreifen. An den in Fahrtrichtung der Straßenfräsmaschine verlaufenden Seiten des Fräskastens sind Schutzelemente eingesetzt, die als Kantenschutz bezeichnet werden. Der Kantenschutz deckt die Fräswalze seitlich ab und verhindert damit zum einen den Zugang zur Fräswalze während des Fräsbetriebes. Zum anderen wird ein Auswurf von abgefrästem Material in die Umgebung verhindert. Der Kantenschutz steht mit einer unteren Gleitkufe auf der Fahrbahnoberfläche auf, sodass eine vollständige Abdeckung der Fräswalze erreicht ist. Zudem drückt die Gleitkufe auf den unbearbeiteten Fahrbahnbelag, der im Anschluss an die Fräswalze außerhalb des Arbeitsbereiches liegt. Dementsprechend bildet der Kantenschutz mithin ein Widerlager das ein Ausbrechen des seitlich anschließenden Fahrbahnbelages während des Fräsprozesses verhindert. Die Gleitkufe ist aus Kufensegmenten zusammengesetzt, die einem gewissen Verschleiß unterliegen und daher nach Erreichen ihrer Verschleißgrenze getauscht werden müssen. Hierzu weisen die Kufensegmente einen Befestigungsabschnitt auf mit dem sie seitlich an den Kantenschutz angeschraubt sind. Die Schraubenköpfe der Kufensegmente sind mitunter dem abrasiven Angriff von abgetragenem Material ausgesetzt und werden dann abgeschliffen. Sie können mit dem bestimmungsgemäßen Werkzeug dann nicht mehr gelöst werden. Weiterhin kann es vorkommen, dass die Anschlussflächen zwischen dem Kantenschutz und den Kufensegmenten ausgewaschen werden. Dann lassen sich die Kufensegmente nicht mehr exakt reproduzierbar positionieren.Road milling machines are used in road and road construction. They serve to remove the existing road surface completely or preferably partially. Here, a milling drum is used, which is housed protected within a milling box. The milling drum is usually equipped with chisels, which engage the road surface in the substrate to be processed. At the running in the direction of the road milling machine sides of the milling box protective elements are used, which are referred to as edge protection. The edge protection covers the milling drum from the side and thus prevents access to the milling drum during milling operation. On the other hand, ejection of milled material into the environment is prevented. The edge protector stands on the road surface with a lower runner so that complete coverage of the milling drum is achieved. In addition, the skid pushes on the unprocessed road surface, which is located after the milling drum outside the work area. Accordingly, the edge protection thus forms an abutment which prevents a breaking of the laterally adjoining road surface during the milling process. The skid is composed of skid segments, which are subject to wear and therefore must be replaced after reaching their wear limit. For this purpose, the runner segments on a mounting portion with which they are screwed laterally to the edge protection. The screw heads of the skid segments are sometimes exposed to the abrasive attack of removed material and are then abraded. They can then no longer be solved with the intended tool. Furthermore, it is possible that the connection surfaces between the edge protection and the skid segments are washed out. Then the skid segments can no longer be positioned exactly reproducible.
In
In
Es ist Aufgabe der Erfindung, einen Kantenschutz der vorstehend erwähnten Art bereitzustellen, der eine einfache Wartung unterstützt.It is an object of the invention to provide an edge protector of the aforementioned type which assists in easy maintenance.
Die Aufgabe der Erfindung wird mit den Merkmalen des Anspruches 1 gelöst.The object of the invention is achieved with the features of claim 1.
Dementsprechend ist es vorgesehen, dass der Befestigungsabschnitt des Kufensegmentes als Steckansatz ausgebildet ist. Damit kann das Kufensegment mit dem Steckansatz in eine entsprechend ausgebildete Steckaufnahme des Kantenschutzes eingesteckt werden, sodass es im rauen Baustellenbetrieb einfach getauscht werden kann. Der Steckansatz ist in der Steckaufnahme in einem verschleißgeschützten Bereich angeordnet, sodass eine reproduzierbare Zuordnung des Kufensegmentes zum Kantenschutz unterstützt ist. Die Kufensegmente können in die Steckaufnahmen einfach, vorzugsweise werkzeuglos eingeführt werden.Accordingly, it is provided that the attachment portion of the skid segment is formed as a plug-in approach. Thus, the runner segment can be plugged with the plug-in approach in a suitably trained plug-in receptacle of the edge protection, so that it can be easily exchanged in rough construction site operation. The plug-in approach is arranged in the plug-in receptacle in a wear-protected area, so that a reproducible assignment of the skid segment is supported for edge protection. The skid segments can be easily inserted into the plug-in receptacles, preferably without tools.
Um eine exakte Zuordnung der einzelnen Kufensegmente untereinander auf einfache Weise sicherstellen zu können, kann es vorgesehen sein, dass wenigstens eine Anschlagfläche vorgesehen ist, die sich quer zu der die Steckrichtung vorgebenden Mittellängsachse des Steckansatzes erstreckt. Mithin kann das Kufensegment mit seinem Steckansatz, also in den Kantenschutz eingeschoben werden, bis die Anschlagfläche die Einsetzbewegung definiert begrenzt.In order to be able to ensure an exact assignment of the individual segmental segments with each other in a simple manner, it can be provided that at least one stop surface is provided which extends transversely to the direction of insertion predetermining central longitudinal axis of the plug extension extends. Consequently, the runner segment can be inserted with its insertion projection, that is, into the edge protector, until the stop surface defines the insertion movement.
Besonders bevorzugt kann es dabei vorgesehen sein, dass der Steckansatz einen Anschlag aufweist, mit dem die Steckbewegung begrenzbar ist. Der Anschlag ist mithin im Bereich des Steckansatzes verschleißgeschützt untergebracht.Particularly preferably, it may be provided that the plug-in approach has a stop with which the insertion movement can be limited. The stop is thus accommodated wear-protected in the area of the plug-in extension.
Die Montage kann weiter dadurch vereinfacht werden, dass der Steckansatz im Bereich seines freien Endes mit wenigstens einer angeformten Einführzentrierung versehen ist.The assembly can be further simplified in that the plug-in approach is provided in the region of its free end with at least one integrally formed Einführzentrierung.
Wenn vorgesehen ist, dass der Steckansatz an gegenüberliegenden Seiten Stütz-Flanken aufweist, die sich quer zur Laufrichtung des Kufensegmentes erstrecken, dann kann während des Betriebseinsatzes eine formschlüssige Abstützung in Hauptkraftrichtung am Kantenschutz erreicht werden.If it is provided that the plug-in approach has on opposite sides supporting flanks extending transversely to the direction of the runner segment, then a positive support in the main force direction can be achieved at the edge protection during operation.
Besonders bevorzugt verlaufen hierbei die Stütz-Flanken zueinander parallel oder sie konvergieren in Steckrichtung des Steckansatzes. Bei konvergierenden Flächenbereichen ergibt sich zudem eine verjüngte Geometrie des Steckansatzes, die die Einführung in die Steckaufnahme erleichtert. Gemäß einer alternativen Erfindungsvariante kann es auch vorgesehen sein, dass die Stütz-Flanken Flächenbereiche aufweisen, die konvex oder konkav ausgeformt sind. Solche Flächenbereiche bieten zugunsten geringerer Flächenpressungen große Abtragflächenbereiche.Particularly preferred in this case run the support flanks parallel to each other or they converge in the insertion direction of the plug-in approach. In converging surface areas also results in a tapered geometry of the plug-in approach, which facilitates the introduction into the plug-in receptacle. According to an alternative variant of the invention, provision may also be made for the supporting flanks to have surface regions which are convex or concave. Such areas provide large erosion areas in favor of lower surface pressures.
Während des Betriebseinsatzes kann es auch vorkommen, dass die Straßenfräsmaschine quer zur Hauptfahrtrichtung verfahren wird. Um bei diesem Betriebszustand auch eine zuverlässige Fixierung der Kufensegmente aufrecht zu erhalten, kann es vorgesehen sein, dass der Steckansatz an gegenüberliegenden Seiten sich in Laufrichtung des Kufensegmentes erstreckende Seitenflächen aufweist. Mit diesen Seitenflächen kann das Kufensegment an entsprechenden Gegenflächen des Kantenschutzes formschlüssig abgestützt werden.During operation, it can also happen that the road milling machine is moved transversely to the main direction of travel. In order to maintain a reliable fixation of the skid segments in this operating state, it can be provided that the plug approach on opposite sides extending in the running direction of the skid segment side surfaces having. With these side surfaces, the runner segment can be positively supported on corresponding mating surfaces of the edge protector.
Straßenfräsmaschinen werden während des Betriebseinsatzes häufig auch entgegengesetzt zur Hauptfahrtrichtung bewegt. Hierdurch entstehen am Kufensegment Belastungssituationen, die von denen bei Betrieb in Hauptfahrtrichtung abweichen. Um hierbei eine belastungsoptimierte Auslegung des Kufensegmentes erreichen zu können, ist es gemäß einer Erfindungsvariante vorgesehen, dass der Steckansatz zu eine durch die Mittellängsachse des Steckansatzes verlaufenden und sich quer zur Laufrichtung des Kufensegmentes erstreckenden Mittelquerebene eine unsymmetrische Geometrie aufweist.Road milling machines are often moved opposite to the main direction of travel during operation. As a result, loading situations arise at the skid segment, which deviate from those when operating in the main direction of travel. In order to be able to achieve a load-optimized design of the skid segment, it is provided according to a variant of the invention that the plug approach to a running through the central longitudinal axis of the plug approach and extending transversely to the direction of the skid segment transverse central plane has an asymmetrical geometry.
Gemäß einer denkbaren Erfindungsalternative kann es vorgesehen sein, dass wenigstens ein in Laufrichtung vorspringender Vorsprung vorgesehen ist, der in oder entgegengesetzt zur Laufrichtung über den Steckansatz vorsteht. Der Vorsprung dient zur Überbrückung von zwischen den einzelnen Kufensegmenten stehenden Kantenschutzbereichen und ermöglicht damit eine möglichst abstandsfreie Kufenausbildung.According to a conceivable alternative of the invention, it may be provided that at least one projecting in the direction of projection is provided which protrudes in or opposite to the direction over the plug-in approach. The projection serves to bridge between standing edge protection areas between the individual segments segments and thus enables the most distance-free skid training.
Eine kompakte Ausgestaltung des Kufensegmentes wird dadurch unterstützt, dass an den Steckansatz mittelbar oder unmittelbar ein Ansatz angeschlossen ist, der den Kufenabschnitt trägt.A compact design of the skid segment is supported by the fact that directly or indirectly connected to the plug-in approach, which carries the runner section.
Dabei kann insbesondere vorgesehen sein, dass der Kufenabschnitt eine größere Breite als der Ansatz aufweist. Mit einem derartigen Querschnittversatz kann eine labyrinthartige Überdeckung des Eintritts in die Steckaufnahme erreicht werden. Hierdurch wird der Eintrag von Schmutz in die Steckaufnahme verringert.It can be provided in particular that the runner section has a greater width than the approach. With such a cross-section offset, a labyrinth-like overlap of entry into the plug-in receptacle can be achieved. As a result, the entry of dirt is reduced in the socket.
Eine hohe Verschleißresistenz des Kufensegmentes kann dadurch erreicht werden, dass ein Hartstoffelement, bspw. eine Auftragsschweißung, ein Hartmetallelement, eine Hartstoffbeschichtung oder dergleichen auf den Kufenabschnitt aufgebracht ist.A high wear resistance of the skid segment can be achieved by applying a hard material element, for example a build-up weld, a cemented carbide element, a hard material coating or the like, to the runner section.
Eine besonders bevorzugte Erfindungsvariante ist dergestalt, dass ein Klemmelement verwendet ist, das eine oder mehrere elastische Funktionsteile aufweist. Mit dem Klemmelement kann das Kufensegment auf einfache Weise mit dem Kantenschutz verspannt werden, wobei die Verbindung aufgrund der Elastizität der Funk-tionsteile einfach gefügt und gelöst werden kann. Besonders bevorzugt ist das Klemmelement dabei im Bereich des Steckansatzes gehalten, sodass es vor Verschleiß geschützt untergebracht ist.A particularly preferred variant of the invention is such that a clamping element is used which has one or more elastic functional parts. With the clamping element, the runner segment can be clamped in a simple manner with the edge protection, the compound can be simply joined and released due to the elasticity of the functional tion parts. Particularly preferably, the clamping element is held in the region of the plug-in approach, so that it is housed protected from wear.
Eine besonders einfache Zuordnung des Klemmelementes zum Kufensegment lässt sich dann erreichen, wenn der Steckeinsatz eine Aufnahme in Form einer Aufsparung oder Ausnehmung aufweist, in die das Klemmelement eingebracht ist. Dabei kann insbesondere die Elastizität des Klemmelementes auch ausgenutzt sein um eine Verspannung in der Aufnahme zu erreichen, sodass auf zusätzliche Befestigungsmaßnahmen verzichtet werden kann.A particularly simple assignment of the clamping element to Kufensegment can be achieved if the plug has a receptacle in the form of a recess or recess into which the clamping element is introduced. In particular, the elasticity of the clamping element can also be utilized in order to achieve a tension in the receptacle, so that additional fastening measures can be dispensed with.
Besonders bevorzugt sind die Steckaufnahmen taschenförmig ausgebildet und zur Unterseite des Kantenschutzes hin offen. Eine einfache Herstellung des Kantenschutzes ist dabei dann möglich, wenn vorgesehen ist, dass der Rand kammartig ausgebildete Ausnehmungen aufweist, die zur Bildung der Aufnahmen mit zueinander parallel beabstandeten Wandungen zumindest bereichsweise geschlossen sind.Particularly preferably, the plug receptacles are pocket-shaped and open to the underside of the edge protector. A simple production of the edge protector is then possible if it is provided that the edge has comb-like recesses which are at least partially closed to form the receptacles with mutually parallel spaced walls.
Die Erfindung wird im Folgenden anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:
- Figur 1
- in perspektivischer Darstellung einen Kantenschutz für eine Straßenfräsmaschine;
- Figur 2
- ein in
Figur 1 mit II-II gekennzeichnetes Schnittdetail; - Figur 3
- ein in
Figur 1 mit III-III gekennzeichnetes Schnittdetail; - Figur 4
- in perspektivischer Darstellung eine erste Variante eines Kufensegmentes;
- Figur 5
- eine Schnittdarstellung des Kufensegmentes gemäß
Figur 4 längs des darin mit V-V gekennzeichneten Schnittverlaufes; - Figur 6
- in perspektivischer Darstellung eine zweite Ausgestaltungsvariante eines Kufensegmentes;
- Figur 7
- das Kufensegment gemäß
Figur 6 in Seitenansicht; - Figur 8
- eine Dritte Ausgestaltungsvariante eines Kufensegmentes in perspektivischer Darstellung; und
- Figur 9
- einen Schnittverlauf durch die mit IX-IX gekennzeichnete Mittelquerebene des Kufensegmentes gemäß
Figur 8 .
- FIG. 1
- in perspective view of an edge protection for a road milling machine;
- FIG. 2
- a in
FIG. 1 Section detail marked II-II; - FIG. 3
- a in
FIG. 1 sectional detail marked III-III; - FIG. 4
- in perspective view a first variant of a skid segment;
- FIG. 5
- a sectional view of the skid segment according to
FIG. 4 along the section indicated therein by VV; - FIG. 6
- in a perspective view of a second embodiment variant of a skid segment;
- FIG. 7
- the skid segment according to
FIG. 6 in side view; - FIG. 8
- a third embodiment variant of a skid segment in perspective view; and
- FIG. 9
- a section through the designated IX-IX median transverse plane of the skid segment according to
FIG. 8 ,
Der Steckansatz 38 wird von zwei sich in Laufrichtung L erstreckenden Seitenflächen 38.3 begrenzt. Dabei sind die Seitenflächen 38.3 zueinander parallel. Die Seitenflächen 38.3 gehen absatzlos in den Ansatz 31 über.The plug-in
Wie die Ausgestaltungsvariante gemäß den
Im Bereich des Steckansatzes 38 ist ein Klemmelement 40 befestigt. Das Klemmelement 40 weist elastische Funktionsteile 42 auf, die vorwiegend als Lamellen ausgebildet sind, wie dies
Während des Betriebseinsatzes schleifen die Kufensegmente 30 mit ihren Hartstoffelementen 37 über den Untergrund und werden dabei kontinuierlich verschlissen. Nach Erreichen der Verschleißgrenze können die Kufensegmente 30 einfach ausgetauscht werden. Zur Demontage sind fensterartige Öffnungen 18 in den außenseitigen Wandungen 16 vorgesehen. In diese Öffnungen 18 kann ein Werkzeug 20 mit einem Austreibdorn 21 eingestellt werden. Dabei stützt sich dann der Austreibdorn 21 auf der Anlagefläche 36.1 des Kufenabschnittes 36 ab. Mittels eines Hammerschlages kann dann eine Austreibkraft senkrecht nach unten in das Kufensegment 30 eingebracht werden. Dabei wird dann die reibschlüssige Verbindung zwischen der Innenseite der Wandung 16 und dem Klemmelement 14 durch Ausschieben des Kufensegments 30 getrennt. Anschließend kann das Kufensegment 30 vollständig aus der Steckaufnahme 14 ausgezogen und gegen ein neues Kufensegment 30 ausgetauscht werden.During operation, the
In
Wie
In den
Das Klemmelement 40 weist, wie dies
Claims (15)
- Edge protection (10) for a road milling machine or similar ground processing machine comprising an edge (12) and skid segments (30), wherein the edge (12) is designed for receiving the skid segments (30),
characterised in that
the edge (12) comprises plug-in slots (14) for receiving the skid segments (30),
in that the skid segment (30) comprises a skid section (36), on which an attachment section is directly or indirectly formed,
and in that the attachment section takes the form of a plug-in lug (38). - The edge protection according to claim 1,
characterised in that
at least one stop surface (33) is provided on the skid segment, which extends transverse to the central longitudinal axis of the plug-in lug (38), which determines the plug-in direction, and/or
in that the plug-in lug (38) comprises a stop, by which the plug-in movement can be limited. - The edge protection according to one of claims 1 or 2,
characterised in that
the plug-in lug (38) is provided with at least one integrally formed insertion centring (38.1) in the region of its free end. - The edge protection according to one of the claims 1 to 3,
characterised in that
the plug-in lug (38) comprises support flanks (38.2) on opposite sides, which extend transverse to the running direction (L) of the skid segment (30). - The edge protection according to claim 4,
characterised in that
the support flanks (38.2) comprise surface regions, which run parallel to one another or converge in the plug-in direction of the plug-in lug (38). - The edge protection according to claim 4 or claim 5,
characterised in that
the support flanks (38.2) comprise surface regions, which are integrally formed convex or concave. - The edge protection according to one of the claims 1 to 6,
characterised in that
the plug-in lug (38) comprises side surfaces (38.3) on opposite sides extending in the running direction (L) of the skid segment (30). - The edge protection according to one of the claims 1 to 7,
characterised in that
the plug-in lug (38) has a non-symmetric geometry with respect to a central transverse plane running through the central longitudinal axis (M) of the plug-in lug and transverse to the running direction (L) of the skid segment (30). - The edge protection according to one of the claims 1 to 8,
characterised in that
at least one projection (32) is provided on the skid segment (30), projecting in the running direction (L) and protruding in or opposite to the running direction (L) beyond the plug-in lug (38). - The edge protection according to one of the claims 1 to 9,
characterised in that
a lug (31) is directly or indirectly connected to the plug-in lug (38), which carries the skid section (36), wherein the skid section (36) preferably has a greater width than the lug (31). - The edge protection according to one of the claims 1 to 10,
characterised in that
the skid section (36) comprises a hard material element (37), for example an overlay weld, a hard metal element, a hard material coating or the like. - The edge protection according to one of the claims 1 to 11,
characterised in that
a clamp element (40) is used which has one or more resilient functional parts (42). - The edge protection according to claim 12,
characterised in that
the clamp element (40) is held in the region of the plug-in lug (38). - The edge protection according to one of claims 12 or 13,
characterised in that
the plug-in lug (38) has a slot (39) in the form of a notch or recess, into which the clamping element (40) is introduced. - The edge protection according to one of the claims 1 to 14,
characterised in that
the plug-in slots (14) are in the form of pockets and are open towards the underside of the edge protection (10) and/or
in that the edge (12) comprises comb like formed recesses, which are closed, at least in regions, to form the slots with walls (18) that are spaced apart and parallel to one another.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012103440.0A DE102012103440B4 (en) | 2012-04-19 | 2012-04-19 | Skid segment for edge protection of a road milling machine and edge protection for a road milling machine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2653612A2 EP2653612A2 (en) | 2013-10-23 |
EP2653612A3 EP2653612A3 (en) | 2014-11-12 |
EP2653612B1 true EP2653612B1 (en) | 2018-09-05 |
Family
ID=47900593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13157055.8A Not-in-force EP2653612B1 (en) | 2012-04-19 | 2013-02-27 | Edge protector for a street milling machine |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP2653612B1 (en) |
JP (2) | JP5755280B2 (en) |
KR (1) | KR101633050B1 (en) |
CN (2) | CN203174483U (en) |
AU (1) | AU2013201368B2 (en) |
BR (1) | BR102013009509A2 (en) |
DE (1) | DE102012103440B4 (en) |
RU (1) | RU2530803C1 (en) |
SG (1) | SG194294A1 (en) |
TW (1) | TWI580841B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012103440B4 (en) * | 2012-04-19 | 2016-01-21 | Wirtgen Gmbh | Skid segment for edge protection of a road milling machine and edge protection for a road milling machine |
DE102016123662A1 (en) | 2016-12-07 | 2018-06-07 | Wirtgen Gmbh | Skid segment for edge protection of a road milling machine and edge protection for a road milling machine |
DE102017116757B4 (en) * | 2017-07-25 | 2020-11-12 | Betek Gmbh & Co. Kg | Scraper bar for a scraper blade on a road milling machine |
AU201810959S (en) | 2017-08-25 | 2018-03-07 | Wirtgen Gmbh | Milling machine part |
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JPS6332004A (en) * | 1986-07-25 | 1988-02-10 | 有限会社 新田建興 | Sewage recovery apparatus in road cutter |
JPH01113199A (en) * | 1987-10-23 | 1989-05-01 | Showa Alum Corp | Production of aluminum material having excellent wear resistance and conductivity |
JPH0732575Y2 (en) * | 1989-08-10 | 1995-07-26 | ラサ工業株式会社 | Blade cover for road cutting machine |
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JP2001323413A (en) * | 2000-05-15 | 2001-11-22 | Yamaichi Kenki Kk | Three-wheel surface chipping machine |
DE10247579B3 (en) * | 2002-10-11 | 2004-04-15 | Wirtgen Gmbh | Scraper device for milling drums of a construction machine, as well as method |
DE10347874A1 (en) * | 2003-10-10 | 2005-05-12 | Wirtgen Gmbh | Rear loader road milling machine with height-adjustable sealing device |
CN2654671Y (en) * | 2003-11-14 | 2004-11-10 | 镇江华晨华通路面机械有限公司 | Road surface milling planing machine floating type material output device |
DE10357074B3 (en) * | 2003-12-04 | 2005-05-19 | Wirtgen Gmbh | Self-propelled road surfacing machine with direct mechanical drive of working roller from drive take-off shaft of internal combustion engine |
JP4445296B2 (en) * | 2004-03-12 | 2010-04-07 | 株式会社東芝 | Abrasion-resistant member local repair device and repair method |
JP4373821B2 (en) * | 2004-03-12 | 2009-11-25 | 株式会社東芝 | How to repair wear-resistant members |
DE102006015506B3 (en) * | 2006-03-31 | 2007-11-08 | Wirtgen Gmbh | Milling roller for a construction machine, construction machine and gear unit for a milling drum |
US7686537B2 (en) * | 2006-04-05 | 2010-03-30 | Myron L. Mullett | Road grader/spreader |
DE102007038677B4 (en) * | 2007-08-15 | 2009-09-17 | Wirtgen Gmbh | Scraper device, as well as construction machine |
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DE102009014729B3 (en) * | 2009-03-25 | 2010-11-04 | Wirtgen Gmbh | Ejector for a road milling machine or the like |
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DE102012103440B4 (en) * | 2012-04-19 | 2016-01-21 | Wirtgen Gmbh | Skid segment for edge protection of a road milling machine and edge protection for a road milling machine |
-
2012
- 2012-04-19 DE DE102012103440.0A patent/DE102012103440B4/en active Active
-
2013
- 2013-02-27 EP EP13157055.8A patent/EP2653612B1/en not_active Not-in-force
- 2013-03-08 AU AU2013201368A patent/AU2013201368B2/en not_active Ceased
- 2013-04-04 RU RU2013115175/03A patent/RU2530803C1/en not_active IP Right Cessation
- 2013-04-09 SG SG2013026323A patent/SG194294A1/en unknown
- 2013-04-16 CN CN2013201919902U patent/CN203174483U/en not_active Withdrawn - After Issue
- 2013-04-16 CN CN201310131938.2A patent/CN103374874B/en active Active
- 2013-04-18 KR KR1020130043203A patent/KR101633050B1/en active IP Right Grant
- 2013-04-18 TW TW102113838A patent/TWI580841B/en not_active IP Right Cessation
- 2013-04-18 BR BR102013009509A patent/BR102013009509A2/en active Search and Examination
- 2013-04-19 JP JP2013088293A patent/JP5755280B2/en not_active Expired - Fee Related
-
2015
- 2015-04-07 JP JP2015078414A patent/JP6195862B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
TWI580841B (en) | 2017-05-01 |
RU2530803C1 (en) | 2014-10-10 |
DE102012103440A1 (en) | 2013-10-24 |
RU2013115175A (en) | 2014-10-10 |
EP2653612A2 (en) | 2013-10-23 |
AU2013201368A1 (en) | 2013-11-07 |
JP2015145615A (en) | 2015-08-13 |
EP2653612A3 (en) | 2014-11-12 |
KR20130118272A (en) | 2013-10-29 |
JP2013224577A (en) | 2013-10-31 |
CN103374874B (en) | 2016-12-28 |
TW201344011A (en) | 2013-11-01 |
JP5755280B2 (en) | 2015-07-29 |
BR102013009509A2 (en) | 2016-01-26 |
AU2013201368B2 (en) | 2016-04-14 |
CN203174483U (en) | 2013-09-04 |
DE102012103440B4 (en) | 2016-01-21 |
SG194294A1 (en) | 2013-11-29 |
KR101633050B1 (en) | 2016-06-23 |
JP6195862B2 (en) | 2017-09-13 |
CN103374874A (en) | 2013-10-30 |
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