EP2324158B2 - Cutter to be mounted on an excavator, having cutting heads and a cutter chain. - Google Patents

Cutter to be mounted on an excavator, having cutting heads and a cutter chain. Download PDF

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Publication number
EP2324158B2
EP2324158B2 EP09782250.6A EP09782250A EP2324158B2 EP 2324158 B2 EP2324158 B2 EP 2324158B2 EP 09782250 A EP09782250 A EP 09782250A EP 2324158 B2 EP2324158 B2 EP 2324158B2
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Prior art keywords
cutting heads
cross
cutter
cutting
chain
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EP09782250.6A
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German (de)
French (fr)
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EP2324158B1 (en
EP2324158A1 (en
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Klaus Ertmer
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Priority to PL09782250T priority Critical patent/PL2324158T5/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/085—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain with auxiliary or additional digging elements other than digging elements on an endless chain
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/10—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain with tools that only loosen the material, i.e. with cutter-type chains
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/24—Mineral freed by means not involving slitting by milling means acting on the full working face, i.e. the rotary axis of the tool carrier being substantially parallel to the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/1013—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom
    • E21D9/102—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom by a longitudinally extending boom being pivotable about a vertical and a transverse axis
    • E21D9/1026—Making by using boring or cutting machines with rotary cutting tools on a tool-carrier supported by a movable boom by a longitudinally extending boom being pivotable about a vertical and a transverse axis the tool-carrier being rotated about a transverse axis

Definitions

  • the invention relates to an add-on milling system with an add-on bracket for flange-mounting on a movable support arm of a carrier device.
  • a carrier device is in particular an excavator or a similar construction machine.
  • the add-on milling system comprises at least one motor and two cutting heads driven in rotation, which are attached to both sides of the longitudinal axis of the mounting bracket and carry numerous milling bits, the milling bits of each cutting head describing a cylindrical milling surface as it rotates.
  • the area of application for such an add-on milling system is in particular road construction, special civil engineering, tunnel or hydraulic engineering.
  • the cultivator is e.g. Used for breaking open sealed surfaces, but also for demolishing concrete and removing certain layers of earth and rock.
  • Dredge milling cutters are also often used to mine soft and medium-hard rocks such as limestone or gypsum. It is particularly important when mining gypsum that the fine fraction in the milled material is kept as low as possible.
  • excavator attachment cutters with side cutting heads that are pivoted on the excavation wall, the material broken off by the front cutting head is undesirably further shredded by the following cutting head.
  • a milling system for attachment to hydraulic carrier devices which consists of two or more attachment milling cutters (1) of the same or different structure with the same or different tool carriers (6), each separately driven by a hydraulic motor (3).
  • the individual cultivators (1) are interchangeably arranged next to one another, behind one another or at an angle to one another, at the same or different heights, via connecting brackets (8). This is intended to enable more efficient material removal from the front of the carrier device.
  • this milling system is complex and unsuitable for digging, for example.
  • a so-called trencher which is equipped with a milling chain.
  • the trencher comprises worm shafts attached vertically to the direction of travel of the milling chain, which push the excavated soil away from the excavated trench.
  • a disadvantage here is the limited usability of this machine.
  • the trencher is not suitable for large-scale material removal on a wall. Due to its high-rise construction, the trencher is also exposed to high mechanical loads. The forces not only occur in the longitudinal direction of the rotating milling chain, but also vertically to the chain, especially when the milling tool hits obstacles such as stones or the like.
  • the object of the invention is to further develop an add-on milling system for a movable carrier arm of a carrier device in such a way that it can be used for different milling and cutting work without the efficiency of the individual work situations being significantly impaired.
  • the object is achieved by the features of the add-on milling system according to the attached claim 1.
  • the add-on milling system according to the invention for flange-mounting on a movable support arm of a carrier device comprises an add-on bracket to which rotating cutting heads are attached on both sides of the longitudinal axis of the add-on bracket. Furthermore, the add-on milling system comprises a rotating milling chain with a running direction that runs parallel to the longitudinal axis of the add-on bracket and that extends between the two cutting heads. Numerous milling chisels are attached to the milling chain and the cutting heads, which describe a cylindrical milling surface when the cutting heads are rotated.
  • the cutting tools of the cutting chain form a semi-cylindrical jacket surface at the exposed front end of the cutting chain.
  • the front reversal line of the milling chain lies essentially in a plane tangent to the milling jacket surfaces of the two cutting heads.
  • the lines of contact of the milling chisels of the cutting heads with the surface to be milled are therefore without any notable gap, which in the case of devices according to the prior art is due to the width the mounting bracket is determined, next to the line of contact of the milling cutter of the milling chain.
  • These lines of contact are expediently also in a common plane.
  • the attachment milling system according to the invention thus has the advantage that it is no longer necessary to pivot the excavator attachment cutter to the side in order to remove material over a large area on a mining wall.
  • the cultivator is attached to the top of the excavation wall and works vertically downwards. With the appropriate equipment of the cutting heads and the milling chain with tools, rock with an optimal grain size can be produced and the movable support arm of the carrier device is less stressed.
  • the add-on milling system comprises two driver pinions through which the milling chain is driven.
  • the respective driver pinions are arranged between the milling chain and the adjacent cutting heads, and they engage driving elements of the milling chain as well as the respectively adjacent cutting head.
  • the power transmission from the drive pinions to the milling chain takes place e.g. by means of driving pins, which form the driving elements of the milling chain.
  • connection between the driver pinion and the cutting heads can be released so that the cutting heads can be removed from the mounting bracket without the drive of the milling chain being impaired.
  • This interchangeability of the cutting heads makes it possible to redesign and use the add-on milling system for other purposes. For example, cutting heads with a narrower shape can be exchanged for those with a wider shape.
  • Another possibility is to generally leave out the cutting heads in order to work exclusively with the milling chain.
  • the advantage of the add-on milling system according to the invention is that this modular add-on milling system can be converted quickly and easily in the event of changing tasks on the construction site, making the use of this device more economical and versatile.
  • the milling chain is guided with little wear in the longitudinal direction to the carrier arm via a gear housing arranged there, preferably with the interposition of a linear guide unit.
  • the gear housing extends in the longitudinal direction between the two cutting heads and the mounting bracket and comprises a gear which is located between the motor and the cutting heads.
  • a single motor which is rotated by the milling chain, is arranged between the two cutting heads. There is no power transmission to the milling chain via the gearbox and the drive takes place directly, both on the milling chain and on the cutting heads, e.g. with the help of the driver pinion.
  • the add-on milling system comprises several motors, preferably hydraulic motors, which are each assigned to a cutting head.
  • the milling chain is driven accordingly by both motors, which in In the longitudinal direction and are arranged on both sides of the gearbox or motor housing.
  • the cutting heads are designed either as transverse cutting heads or as longitudinal cutting heads, with the milling chain being guided in between.
  • Fig. 1 shows a first embodiment of an add-on milling system according to the invention with an add-on bracket for flange-mounting on a movable carrier arm of a carrier device in a perspective view.
  • the add-on milling system comprises a milling chain 01 and two rotating cutting heads 03 which are attached to a mounting bracket 02.
  • the mounting bracket is flanged to the support arm of a carrier device (not shown) in a manner known per se.
  • the cutting heads 03 are attached to both sides of the mounting bracket 02, based on its longitudinal axis.
  • the milling chain 01 is located between the two rotating cutting heads 03 and runs parallel to the longitudinal axis of the mounting bracket 02.
  • Milling chisels 04 are attached to each of the two cutting heads 03 and to the milling chain 01, for example carbide-tipped round shank chisels, and these can also be equipped with other cutting tools.
  • the milling chisels 04 describe a cylindrical milling jacket surface.
  • the milling chisels 04 on the milling chain 01 are distributed in the running direction, while in operation they describe a semi-cylindrical milling jacket surface at the exposed front end of the milling chain 01.
  • the front reversal line of the milling chain 01 thus lies essentially in one plane with the plane that is defined by the milling jacket surfaces of the two cutting heads 03.
  • the cutting heads 03 and the milling chain 01 thus together form a roller-like milling tool.
  • the add-on milling system shown comprises two driver pinions 05, which drive the milling chain 01 and the two cutting heads 03.
  • the respective driver pinions 05 are arranged between the milling chain 01 and the adjacent cutting head 03 and are driven via a drive shaft, not shown.
  • the power transmission from the driver pinions 05 to the milling chain 01 takes place by means of driver pins 07 which are firmly attached and are located on the sides facing the cutting heads transversely to the running direction of the milling chain 01.
  • driver pins 07 As a result of the engagement of the driver pins 07 in the rotatably driven driver pinion 05, the feed force is transmitted to the milling chain 01.
  • Fig. 1 an embodiment is shown in which between the cutting heads 03 and the driver pinions 07 a permanent connection exists.
  • the cutting heads 03 are attached to the mounting bracket 02 by welding, for example.
  • the milling chain 01 is guided over a gear housing 09 with little wear and tear, which runs in the longitudinal direction to the support arm and, starting from the mounting bracket 02, extends between the two cutting heads 03.
  • a linear guide unit is attached to the gear housing for this purpose.
  • the milling chain 01 is deflected by means of a non-visible deflection roller.
  • This embodiment of the add-on milling system also has a gear (not shown) and two laterally flanged motors 11, which are available for driving both the milling chain 01 and the two cutting heads 03.
  • the reduction gear is located between the cutting heads 03 and the mounting bracket 02 and is rotated by the milling chain 01.
  • the milling chain 01 and the two cutting heads 03 are driven by means of the motors 11, which are preferably hydraulic motors.
  • Each of the cutting heads 03 is assigned one of the motors 11, which are located between the gearbox and the mounting bracket 02 on both sides of the gearbox housing 09.
  • the milling chain is driven by both motors at the same time.
  • FIG. 2 a second embodiment of the cultivation milling system is shown, which also contains the essential elements of the embodiment described above.
  • the special feature of this embodiment is that the milling chain 01 is driven by a motor, preferably a hydraulic motor, which is connected to the Milling chain 01 is coupled.
  • the motor is arranged between the two cutting heads 03 and is rotated by the milling chain 01. Both the milling chain 01 and the cutting heads 03 are driven by the slow running motor.
  • the cutting heads 03 are releasably connected to the driver pinions 05, so that the cutting heads 03 can be removed from the mounting bracket 01 without the drive of the milling chain 01 being impaired.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Shovels (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Description

Die Erfindung betrifft ein Anbaufrässystem mit einer Anbaukonsole zum Anflanschen an einen beweglichen Trägerarm eines Trägergerätes. Ein solches Trägergerät ist insbesondere ein Bagger oder eine ähnliche Baumaschine. Das Anbaufrässystem umfasst mindestens einen Motor und zwei von diesem rotierend angetriebene Schneidköpfe, die beidseitig der Längsachse der Anbaukonsole angebracht sind und zahlreiche Fräsmeißel tragen, wobei die Fräsmeißel jedes Schneidkopfes bei dessen Drehung eine zylindrische Fräsmantelfläche beschreiben.The invention relates to an add-on milling system with an add-on bracket for flange-mounting on a movable support arm of a carrier device. Such a carrier device is in particular an excavator or a similar construction machine. The add-on milling system comprises at least one motor and two cutting heads driven in rotation, which are attached to both sides of the longitudinal axis of the mounting bracket and carry numerous milling bits, the milling bits of each cutting head describing a cylindrical milling surface as it rotates.

Der Einsatzbereich für ein solches Anbaufrässystem ist insbesondere der Straßenbau, Spezialtiefbau, Tunnel- oder Wasserbau. Dabei wird die Anbaufräse z.B. zum Aufbrechen versiegelter Oberflächen aber auch zum Betonabbruch und zum Abbau bestimmter Erd- und Gesteinsschichten eingesetzt.The area of application for such an add-on milling system is in particular road construction, special civil engineering, tunnel or hydraulic engineering. The cultivator is e.g. Used for breaking open sealed surfaces, but also for demolishing concrete and removing certain layers of earth and rock.

Bekannt sind beispielsweise aus der DE 101 32 608 B4 oder EP 1 715 106 A1 Baggeranbaufräsen die als Querschneidkopffräsen ausgebildet sind und mit hartmetallbestückten Rundschaftmeißeln als Schneidwerkzeug ausgerüstet werden. Beim Einsatz dieses Fräsentyps, muss in der Regel die Fräse seitlich hin und her geschwenkt werden, um dadurch das Material zwischen den Schneidköpfen zu brechen. Der Nachteil dieser Fräsen ist, dass die Schneidbreite größer ausfällt als die eigentliche Breite des Fräskopfes, was sich im Kanalbau besonders unvorteilhaft erweist. Ein weiterer Nachteil besteht bei diesen Fräsen in der Belastung des Schwenkwerkes des Baggers, welches beim Fräsen ständig großen Torsions- und Scherkräften ausgesetzt wird.Are known for example from the DE 101 32 608 B4 or EP 1 715 106 A1 Excavator attachment cutters designed as cross cutting head cutters and equipped with carbide-tipped round shank bits as cutting tools. When using this type of milling cutter, the milling cutter usually has to be swiveled to the side in order to break the material between the cutting heads. The disadvantage of this type of milling is that the cutting width is larger than the actual width of the milling head, which is particularly disadvantageous in sewer construction. Another disadvantage of these milling machines is the load on the swing mechanism of the excavator, which is constantly exposed to high torsional and shear forces during milling.

Baggeranbaufräsen werden auch oft zum Abbau von weichen und mittelharten Gesteinen wie beispielsweise Kalksteine oder Gips eingesetzt. Dabei ist es besonders beim Gipsabbau wichtig, dass der Feinanteil im Fräsgut so gering wie möglich gehalten wird. Durch den Einsatz von Baggeranbaufräsen mit seitlichen Schneidköpfen, die an der Abbauwand verschwenkt werden, wird das vom vorderen Schneidkopf abgebrochene Material durch den nachfolgenden Schneidkopf unerwünscht weiter zerkleinert.Dredge milling cutters are also often used to mine soft and medium-hard rocks such as limestone or gypsum. It is particularly important when mining gypsum that the fine fraction in the milled material is kept as low as possible. By using excavator attachment cutters with side cutting heads that are pivoted on the excavation wall, the material broken off by the front cutting head is undesirably further shredded by the following cutting head.

Aus der DE 100 41 275 B4 ist ein Frässystem zum Anbau an hydraulische Trägergeräte bekannt, welches aus zwei oder mehreren über je einen Hydraulikmotor (3) gleichzeitig separat angetriebenen Anbaufräsen (1) gleichen oder unterschiedlichen Aufbaus mit gleichen oder unterschiedlichen Werkzeugträgern (6) besteht. Die einzelnen Anbaufräsen (1) sind über Verbindungskonsolen (8) auswechselbar nebeneinander, hintereinander oder winklig zueinander, auf gleicher oder unterschiedlicher Höhe angeordnet. Damit soll der Materialabbau frontal zum Trägergerät effizienter möglich sein. Allerdings ist dieses Frässystem aufwendig und beispielsweise für den Grabenbau wenig geeignet.From the DE 100 41 275 B4 a milling system for attachment to hydraulic carrier devices is known, which consists of two or more attachment milling cutters (1) of the same or different structure with the same or different tool carriers (6), each separately driven by a hydraulic motor (3). The individual cultivators (1) are interchangeably arranged next to one another, behind one another or at an angle to one another, at the same or different heights, via connecting brackets (8). This is intended to enable more efficient material removal from the front of the carrier device. However, this milling system is complex and unsuitable for digging, for example.

Aus der Druckschrift US 7,096,609 B2 ist ein so genannter Trencher bekannt, welcher mit einer Fräskette ausgestattet ist. Der Trencher umfasst vertikal zur Laufrichtung der Fräskette angebrachte Schneckenwellen, welche den abgetragenen Boden von dem ausgeschachteten Graben weg drücken. Ein Nachteil ist hier die beschränkte Einsetzbarkeit dieser Maschine. Für den großflächigen Materialabbau an einer Wand ist der Trencher ungeeignet. Durch seine hoch geführte Konstruktion wird der Trencher außerdem hohen mechanischen Beanspruchungen ausgesetzt. Dabei treten die Kräfte nicht nur in der Längsrichtung der umlaufenden Fräskette auf, sondern auch senkrecht zu der Kette, insbesondere wenn das Fräswerkzeug auf Hindernisse wie Steine oder gleichartiges auftrifft.From the pamphlet US 7,096,609 B2 a so-called trencher is known, which is equipped with a milling chain. The trencher comprises worm shafts attached vertically to the direction of travel of the milling chain, which push the excavated soil away from the excavated trench. A disadvantage here is the limited usability of this machine. The trencher is not suitable for large-scale material removal on a wall. Due to its high-rise construction, the trencher is also exposed to high mechanical loads. The forces not only occur in the longitudinal direction of the rotating milling chain, but also vertically to the chain, especially when the milling tool hits obstacles such as stones or the like.

Die Aufgabe der Erfindung besteht darin, ein Anbaufrässystem für einen beweglichen Trägerarm eines Trägergerätes derart weiter zu entwickeln, dass es für unterschiedliche Fräs- und Schneidarbeiten einsetzbar ist, ohne dass dabei die Effizienz der einzelnen Arbeitssituationen wesentlich beeinträchtigt wird.The object of the invention is to further develop an add-on milling system for a movable carrier arm of a carrier device in such a way that it can be used for different milling and cutting work without the efficiency of the individual work situations being significantly impaired.

Erfindungsgemäß wird die Aufgabe durch die Merkmale das Anbaufrässystem gemäß dem beigefügten Anspruch 1 gelöst.According to the invention, the object is achieved by the features of the add-on milling system according to the attached claim 1.

Das erfindungsgemäße Anbaufrässystem zum Anflanschen an einen beweglichen Trägerarm eines Trägergerätes umfasst eine Anbaukonsole, an welcher rotierende Schneidköpfe beidseitig zu der Längsachse der Anbaukonsole angebracht sind. Weiterhin umfasst das Anbaufrässystem eine umlaufende Fräskette mit einer Laufrichtung, die parallel zur Längsachse der Anbaukonsole verläuft und die sich zwischen den beiden Schneidköpfen erstreckt. An der Fräskette und den Schneidköpfen sind zahlreiche Fräsmeißel angebracht, die bei einer Drehung der Schneidköpfe eine zylindrische Fräsmantelfläche beschreiben. Die Fräsmeißel der Fräskette bilden am freiliegenden vorderen Ende der Fräskette eine halbzylindrische Manteloberfläche. Dabei liegt die vordere Umkehrlinie der Fräskette im Wesentlichen in einer die Fräsmantelflächen der beiden Schneidköpfe tangierenden Ebene.The add-on milling system according to the invention for flange-mounting on a movable support arm of a carrier device comprises an add-on bracket to which rotating cutting heads are attached on both sides of the longitudinal axis of the add-on bracket. Furthermore, the add-on milling system comprises a rotating milling chain with a running direction that runs parallel to the longitudinal axis of the add-on bracket and that extends between the two cutting heads. Numerous milling chisels are attached to the milling chain and the cutting heads, which describe a cylindrical milling surface when the cutting heads are rotated. The cutting tools of the cutting chain form a semi-cylindrical jacket surface at the exposed front end of the cutting chain. The front reversal line of the milling chain lies essentially in a plane tangent to the milling jacket surfaces of the two cutting heads.

Die Berührungslinien der Fräsmeißel der Schneidköpfe mit der zu fräsenden Oberfläche liegen damit ohne nennenswerte Lücke, die bei Geräten nach dem Stand der Technik durch die Breite der Anbaukonsole bestimmt ist, neben der Berührungslinie der Fräsmeißel der Fräskette. Zweckmäßigerweise liegen diese Berührungslinien auch in einer gemeinsamen Ebene.The lines of contact of the milling chisels of the cutting heads with the surface to be milled are therefore without any notable gap, which in the case of devices according to the prior art is due to the width the mounting bracket is determined, next to the line of contact of the milling cutter of the milling chain. These lines of contact are expediently also in a common plane.

Damit besitzt das erfindungsgemäße Anbaufrässystem den Vorteil, dass ein seitliches Verschwenken der Baggeranbaufräse nicht mehr notwendig ist, um flächig an einer Abbauwand Material abzutragen. Die Anbaufräse wird oben an der Abbauwand angesetzt und arbeitet senkrecht nach unten. Mit der entsprechenden Bestückung der Schneidköpfe und der Fräskette mit Werkzeugen lässt sich somit Gestein mit einer optimalen Körnung herstellen und der bewegliche Trägerarm das Trägergerät wird weniger belastet.The attachment milling system according to the invention thus has the advantage that it is no longer necessary to pivot the excavator attachment cutter to the side in order to remove material over a large area on a mining wall. The cultivator is attached to the top of the excavation wall and works vertically downwards. With the appropriate equipment of the cutting heads and the milling chain with tools, rock with an optimal grain size can be produced and the movable support arm of the carrier device is less stressed.

Das Anbaufrässystem umfasst in einer bevorzugten Ausführungsform zwei Mitnehmerritzel durch die der Antrieb der Fräskette erfolgt. Die jeweiligen Mitnehmerritzel sind zwischen der Fräskette und den benachbarten Schneideköpfen angeordnet, wobei sie in Mitnehmerelemente der Fräskette als auch in den jeweils angrenzenden Schneidkopf antreibend eingreifen. Die Kraftübertragung von den Mitnehmerritzeln auf die Fräskette erfolgt z.B. mittels Mitnehmerstiften, welche die Mitnehmerelemente der Fräskette bilden.In a preferred embodiment, the add-on milling system comprises two driver pinions through which the milling chain is driven. The respective driver pinions are arranged between the milling chain and the adjacent cutting heads, and they engage driving elements of the milling chain as well as the respectively adjacent cutting head. The power transmission from the drive pinions to the milling chain takes place e.g. by means of driving pins, which form the driving elements of the milling chain.

In einer besonders bevorzugten Ausführungsform des Anbaufrässystems ist die Verbindung zwischen den Mitnehmerritzel und den Schneidköpfen lösbar, sodass die Schneidköpfe von der Anbaukonsole abgenommen werden können, ohne dass der Antrieb der Fräskette beeinträchtigt wird. Durch diese Austauschbarkeit der Schneidköpfe besteht die Möglichkeit, das Anbaufrässystem für andere Anwendungszwecke umzugestalten und einzusetzen. Beispielsweise können Schneidköpfe mit schmalerer Form gegen solche mit breiterer Form ausgetauscht werden.In a particularly preferred embodiment of the add-on milling system, the connection between the driver pinion and the cutting heads can be released so that the cutting heads can be removed from the mounting bracket without the drive of the milling chain being impaired. This interchangeability of the cutting heads makes it possible to redesign and use the add-on milling system for other purposes. For example, cutting heads with a narrower shape can be exchanged for those with a wider shape.

Eine weitere Möglichkeit besteht darin, die Schneidköpfe generell wegzulassen, um ausschließlich mit der Fräskette zu arbeiten. Dabei liegt der Vorteil des erfindungsgemäßen Anbaufrässystems darin, dass bei wechselnden Aufgaben auf der Baustelle dieses modulare Anbaufrässystem schnell und problemlos umgebaut werden kann, wodurch die Nutzung dieses Gerätes wirtschaftlicher und vielseitiger ist.Another possibility is to generally leave out the cutting heads in order to work exclusively with the milling chain. The advantage of the add-on milling system according to the invention is that this modular add-on milling system can be converted quickly and easily in the event of changing tasks on the construction site, making the use of this device more economical and versatile.

In einer weiteren Ausführungsform des Anbaufrässystems wird die Fräskette verschleißarm in Längsrichtung zum Trägerarm über ein dort angeordnetes Getriebegehäuse geführt, vorzugsweise unter Zwischenschaltung einer Linearführungseinheit. Das Getriebegehäuse breitet sich in Längsrichtung zwischen den beiden Schneidköpfen und der Anbaukonsole aus und umfasst ein Getriebe, welches zwischen dem Motor und den Schneidköpfen liegt. Durch die Möglichkeit, dass die Länge des Gehäuses geändert werden kann, entsteht der Vorteil, dass die Tiefe des zu fräsenden Grabens regelbar ist und insgesamt eine größere Grabentiefe erlangt werden kann.In a further embodiment of the add-on milling system, the milling chain is guided with little wear in the longitudinal direction to the carrier arm via a gear housing arranged there, preferably with the interposition of a linear guide unit. The gear housing extends in the longitudinal direction between the two cutting heads and the mounting bracket and comprises a gear which is located between the motor and the cutting heads. The possibility of changing the length of the housing has the advantage that the depth of the trench to be milled can be regulated and, overall, a greater trench depth can be achieved.

In einer bevorzugten Ausführungsform des Anbaufrässystems ist ein einziger Motor zwischen den beiden Schneidköpfen angeordnet, der von der Fräskette umlaufen wird. Dabei entfällt die Kraftübertragung auf die Fräskette über das Getriebe und der Antrieb erfolgt direkt, sowohl auf die Fräskette als auch auf die Schneidköpfe, z.B. mit Hilfe der Mitnehmerritzel.In a preferred embodiment of the add-on milling system, a single motor, which is rotated by the milling chain, is arranged between the two cutting heads. There is no power transmission to the milling chain via the gearbox and the drive takes place directly, both on the milling chain and on the cutting heads, e.g. with the help of the driver pinion.

In einer abgewandelten Ausführungsform umfasst das Anbaufrässystem mehrere Motoren, vorzugsweise Hydraulikmotoren, die jeweils einem Schneidkopf zugeordnet sind. Der Antrieb der Fräskette erfolgt entsprechend über beide Motoren, welche in Längsrichtung und jeweils auf beiden Seiten des Getriebe- bzw. Motorgehäuses angeordnet sind.In a modified embodiment, the add-on milling system comprises several motors, preferably hydraulic motors, which are each assigned to a cutting head. The milling chain is driven accordingly by both motors, which in In the longitudinal direction and are arranged on both sides of the gearbox or motor housing.

Bei vorteilhaften Ausführungsformen des Anbaufrässystems sind die Schneidköpfe entweder als Querschneidköpfe oder als Längsschneidköpfe ausgeführt, wobei die Fräskette dazwischen geführt wird.In advantageous embodiments of the add-on milling system, the cutting heads are designed either as transverse cutting heads or as longitudinal cutting heads, with the milling chain being guided in between.

Besonders bevorzugte Ausführungsformen der Erfindung werden in den Figuren dargestellt und nachfolgend näher erläutert. Es zeigen:

Fig. 1:
eine perspektivische Ansicht einer ersten Ausführungsform eines Anbaufrässystems mit einer Anbaukonsole zum Anflanschen an einen beweglichen Trägerarm eines Trägergerätes und mit einem Getriebegehäuse;
Fig. 2:
eine perspektivische Ansicht einer zweiten Ausführungsform des Anbaufrässystems mit zwischen zwei Schneidköpfen liegendem Motor.
Particularly preferred embodiments of the invention are shown in the figures and explained in more detail below. Show it:
Fig. 1:
a perspective view of a first embodiment of an add-on milling system with an add-on bracket for flange-mounting on a movable support arm of a carrier device and with a gear housing;
Fig. 2:
a perspective view of a second embodiment of the add-on milling system with a motor located between two cutting heads.

Fig. 1 zeigt eine erste Ausführungsform eines erfindungsgemäßen Anbaufrässystems mit einer Anbaukonsole zum Anflanschen an einen beweglichen Trägerarm eines Trägergerätes in einer perspektivischen Darstellung. Das Anbaufrässystem umfasst eine Fräskette 01 und zwei rotierende Schneidköpfe 03, die an einer Anbaukonsole 02 angebracht sind. Die Anbaukonsole wird in an sich bekannter Weise an den Tragarm eines Trägergerätes (nicht dargestellt) angeflanscht. Die Schneidköpfe 03 sind an beiden Seiten der Anbaukonsole 02, bezogen auf deren Längsachse, befestigt. Die Fräskette 01 befindet sich zwischen den beiden rotierenden Schneidköpfen 03 und verläuft parallel zur Längsachse der Anbaukonsole 02. Fig. 1 shows a first embodiment of an add-on milling system according to the invention with an add-on bracket for flange-mounting on a movable carrier arm of a carrier device in a perspective view. The add-on milling system comprises a milling chain 01 and two rotating cutting heads 03 which are attached to a mounting bracket 02. The mounting bracket is flanged to the support arm of a carrier device (not shown) in a manner known per se. The cutting heads 03 are attached to both sides of the mounting bracket 02, based on its longitudinal axis. The milling chain 01 is located between the two rotating cutting heads 03 and runs parallel to the longitudinal axis of the mounting bracket 02.

An jedem der beiden Schneidköpfe 03 und an der Fräskette 01 sind Fräsmeißel 04 angebracht, beispielsweise hartmetallbestückte Rundschaftmeißel, wobei diese auch mit anderen Schneidwerkzeugen bestückt sein können. Während der Drehbewegung der Schneidköpfe 03 um ihre Drehachse wird von den Fräsmeißeln 04 eine zylindrische Fräsmanteloberfläche beschrieben. Die Fräsmeißel 04 auf der Fräskette 01 sind in Laufrichtung verteilt, dabei beschreiben sie im Betrieb am freiliegenden vorderen Ende der Fräskette 01 eine halbzylindrische Fräsmanteloberfläche. Damit liegt die vordere Umkehrlinie der Fräskette 01 im Wesentlichen in einer Ebene mit der Ebene, die durch die Fräsmanteloberflächen der beiden Schneidköpfe 03 definiert wird. Die Schneidköpfe 03 und die Fräskette 01 bilden somit gemeinsam ein walzenähnliches Fräswerkzeug.Milling chisels 04 are attached to each of the two cutting heads 03 and to the milling chain 01, for example carbide-tipped round shank chisels, and these can also be equipped with other cutting tools. During the rotary movement of the cutting heads 03 about their axis of rotation, the milling chisels 04 describe a cylindrical milling jacket surface. The milling chisels 04 on the milling chain 01 are distributed in the running direction, while in operation they describe a semi-cylindrical milling jacket surface at the exposed front end of the milling chain 01. The front reversal line of the milling chain 01 thus lies essentially in one plane with the plane that is defined by the milling jacket surfaces of the two cutting heads 03. The cutting heads 03 and the milling chain 01 thus together form a roller-like milling tool.

Das in Fig. 1 dargestellte Anbaufrässystem umfasst zwei Mitnehmerritzel 05, durch die der Antrieb der Fräskette 01 und der beiden Schneidköpfe 03 erfolgt. Die jeweiligen Mitnehmerritzel 05 sind zwischen der Fräskette 01 und dem benachbarten Schneidkopf 03 angeordnet und werden über eine nicht dargestellte Antriebswelle angetrieben. Die Kraftübertragung von den Mitnehmerritzeln 05 auf die Fräskette 01 erfolgt mittels Mitnehmerstiften 07, die fest angebracht sind und sich an den den Schneidköpfen zugewandten Seiten quer zur Laufrichtung der Fräskette 01 befinden. Durch das Eingreifen der Mitnehmerstifte 07 in dem drehbar angetriebenen Mitnehmerritzel 05 wird die Vorschubkraft auf die Fräskette 01 übertragen.This in Fig. 1 The add-on milling system shown comprises two driver pinions 05, which drive the milling chain 01 and the two cutting heads 03. The respective driver pinions 05 are arranged between the milling chain 01 and the adjacent cutting head 03 and are driven via a drive shaft, not shown. The power transmission from the driver pinions 05 to the milling chain 01 takes place by means of driver pins 07 which are firmly attached and are located on the sides facing the cutting heads transversely to the running direction of the milling chain 01. As a result of the engagement of the driver pins 07 in the rotatably driven driver pinion 05, the feed force is transmitted to the milling chain 01.

In Fig. 1 ist eine Ausführungsform dargestellt, in welcher zwischen den Schneidköpfen 03 und den Mitnehmerritzeln 07 eine dauerhafte Verbindung vorhanden ist. Die Schneidköpfe 03 sind beispielsweise durch Schweißen an der Anbaukonsole 02 befestigt.In Fig. 1 an embodiment is shown in which between the cutting heads 03 and the driver pinions 07 a permanent connection exists. The cutting heads 03 are attached to the mounting bracket 02 by welding, for example.

Die Fräskette 01 wird über ein Getriebegehäuse 09 verschleißarm geführt, welches in Längsrichtung zum Trägerarm verläuft und sich ausgehend von der Anbaukonsole 02 bis zwischen die beiden Schneidköpfe 03 erstreckt. Auf dem Getriebegehäuse ist dazu eine Linearführungseinheit angebracht. Die Umlenkung der Fräskette 01 wird mittels einer nicht sichtbaren Umlenkrolle realisiert. Diese Ausführungsform des Anbaufrässystems weist weiterhin ein nicht dargestelltes Getriebe und zwei seitlich angeflanschte Motoren 11 auf, welche für den Antrieb sowohl der Fräskette 01 als auch der beiden Schneidköpfe 03 zur Verfügung stehen. Das Untersetzungsgetriebe befindet sich zwischen den Schneidköpfen 03 und der Anbaukonsole 02 und wird von der Fräskette 01 umlaufen.The milling chain 01 is guided over a gear housing 09 with little wear and tear, which runs in the longitudinal direction to the support arm and, starting from the mounting bracket 02, extends between the two cutting heads 03. A linear guide unit is attached to the gear housing for this purpose. The milling chain 01 is deflected by means of a non-visible deflection roller. This embodiment of the add-on milling system also has a gear (not shown) and two laterally flanged motors 11, which are available for driving both the milling chain 01 and the two cutting heads 03. The reduction gear is located between the cutting heads 03 and the mounting bracket 02 and is rotated by the milling chain 01.

Der Antrieb der Fräskette 01 und der beiden Schneidköpfe 03 erfolgt mittels der Motoren 11, welche vorzugsweise Hydraulikmotoren sind. Jedem der Schneidköpfe 03 ist einer der Motoren 11 zugeordnet, die sich zwischen dem Getriebe und der Anbaukonsole 02 an beiden Seiten des Getriebegehäuses 09 befinden. Der Antrieb der Fräskette erfolgt entsprechend über beide Motoren gleichzeitig.The milling chain 01 and the two cutting heads 03 are driven by means of the motors 11, which are preferably hydraulic motors. Each of the cutting heads 03 is assigned one of the motors 11, which are located between the gearbox and the mounting bracket 02 on both sides of the gearbox housing 09. The milling chain is driven by both motors at the same time.

In Fig. 2 ist eine zweite Ausführungsform des Anbaufrässystems dargestellt, welches die wesentlichen Elemente der zuvor beschriebenen Ausführungsform ebenfalls enthält.In Fig. 2 a second embodiment of the cultivation milling system is shown, which also contains the essential elements of the embodiment described above.

Die Besonderheit dieser Ausführungsform ist, dass der Antrieb der Fräskette 01 über einen Motor erfolgt, vorzugsweise einen Hydraulikmotor, der ohne Untersetzungsgetriebe an die Fräskette 01 gekoppelt ist. Der Motor ist zwischen den beiden Schneidköpfen 03 angeordnet und wird von der Fräskette 01 umlaufen. Sowohl die Fräskette 01 als auch die Schneidköpfe 03 werden von dem langsam laufenden Motor angetrieben.The special feature of this embodiment is that the milling chain 01 is driven by a motor, preferably a hydraulic motor, which is connected to the Milling chain 01 is coupled. The motor is arranged between the two cutting heads 03 and is rotated by the milling chain 01. Both the milling chain 01 and the cutting heads 03 are driven by the slow running motor.

Die Schneidköpfe 03 sind bei dieser Ausführungsform mit den Mitnehmerritzeln 05 lösbar verbunden, wodurch die Schneidköpfe 03 von der Anbaukonsole 01 abnehmbar sind, ohne dass der Antrieb der Fräskette 01 beeinträchtigt wird.In this embodiment, the cutting heads 03 are releasably connected to the driver pinions 05, so that the cutting heads 03 can be removed from the mounting bracket 01 without the drive of the milling chain 01 being impaired.

BezugszeichenlisteList of reference symbols

0101
FräsketteMilling chain
0202
AnbaukonsoleMounting bracket
0303
SchneidkopfCutting head
0404
FräsmeißelMilling cutter
0505
MitnehmerritzelCarrier pinion
0707
MitnehmerstiftDriving pin
0909
GetriebegehäuseGear housing
1111
Motorengine

Claims (10)

  1. Excavator attachment cutter with an attachment bracket (02) for flanging on a moving carrier arm of an excavator, at least one motor (11) and two cross-cutting heads (03), which are rotationally driven by said motor, are mounted on either side of a longitudinal axis of said attachment bracket (02) and carry numerous cutting teeth (04), the cutting teeth (04) of each cross-cutting head (03) providing a cylindrical cutting surface as they rotate, characterized in that furthermore, a revolving cutter chain (01) is provided having numerous cutting teeth (04) and extending in a running direction parallel to the longitudinal axis of the attachment bracket (02) in such a manner between the two cross-cutting heads (03), that a front reversing line of the cutter chain (01) lies essentially in a plane tangential to the cutting surfaces of the two cross-cutting heads (03); and in that the motor (11) driving the cross-cutting heads (03), also drives the cutter chain (01).
  2. Excavator attachment cutter according to claim 1, characterized in that at an exposed front end, the cutting teeth (04) of the cutter chain (01), define a semicylindrical surface, which lies essentially in a common curved surface with front sections of the cylindrical cutting surfaces of the cross-cutting heads (03).
  3. Excavator attachment cutter according to claim 1 or 2, characterized in that the cutter chain (01) is driven by two driving pinions (05), which are disposed between the cutter chain (01) and the cross-cutting heads (03) and engage driving elements (07) of the cutter chain (01) as well as those of the respectively adjoining cross-cutting heads (03) .
  4. Excavator attachment cutter according to claim 3, characterized in that the cutter chain (01) comprises driving pins (07), which are located at both sides of said cutter chain (01), facing the cross-cutting heads (03) and form the driving elements of the cutter chain (01).
  5. Excavator attachment cutter according to claim 3 or 4, characterized in that the driving pinions (05) are connected with the cross-cutting heads (03) in such a manner, that the cross-cutting heads (03) can be removed from the attachment bracket (02), without interfering with the driving mechanism of the cutter chain (01).
  6. Excavator attachment cutter according to one of the claims 1 to 5, characterized in that the cutter chain (01) is guided in the longitudinal direction over a transmission housing (09) .
  7. Excavator attachment cutter according to claim 6, characterized in that the transmission housing (09) is disposed in the longitudinal direction between the cross-cutting heads (03) and the attachment bracket (02) and contains a reduction gear, which is in the drive train between the motor (11) and the cross-cutting heads (03).
  8. Excavator attachment cutter according to one of the claims 1 to 5, characterized in that the motor and, optionally, a transmission are disposed in a housing section, which is between the two cross-cutting heads (03) and around which the cutter chain (01) is running.
  9. Excavator attachment cutter according to one of the claims 1 to 8, characterized in that the motor is a hydraulic motor.
  10. Excavator attachment cutter according to one of the claims 1 to 9, characterized in that the two cross-cutting heads (03) each have their own motor (11), which also drives the cutter chain (01).
EP09782250.6A 2008-09-11 2009-08-27 Cutter to be mounted on an excavator, having cutting heads and a cutter chain. Active EP2324158B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL09782250T PL2324158T5 (en) 2008-09-11 2009-08-27 Cutter to be mounted on an excavator, having cutting heads and a cutter chain.
HRP20120664TT HRP20120664T4 (en) 2008-09-11 2012-08-16 Cutter to be mounted on an excavator, having cutting heads and a cutter chain

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008041982A DE102008041982B4 (en) 2008-09-11 2008-09-11 Cultivation system with cutting heads and milling chain
PCT/EP2009/061036 WO2010028953A1 (en) 2008-09-11 2009-08-27 Attachment cutting system having cutting heads and a cutter chain

Publications (3)

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EP2324158A1 EP2324158A1 (en) 2011-05-25
EP2324158B1 EP2324158B1 (en) 2012-05-16
EP2324158B2 true EP2324158B2 (en) 2020-11-25

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US (1) US20110247246A1 (en)
EP (1) EP2324158B2 (en)
DE (1) DE102008041982B4 (en)
ES (1) ES2386251T5 (en)
HR (1) HRP20120664T4 (en)
PL (1) PL2324158T5 (en)
WO (1) WO2010028953A1 (en)

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Also Published As

Publication number Publication date
EP2324158B1 (en) 2012-05-16
WO2010028953A1 (en) 2010-03-18
HRP20120664T4 (en) 2021-02-05
EP2324158A1 (en) 2011-05-25
US20110247246A1 (en) 2011-10-13
PL2324158T3 (en) 2012-10-31
HRP20120664T1 (en) 2012-09-30
ES2386251T5 (en) 2021-09-27
DE102008041982B4 (en) 2010-06-17
PL2324158T5 (en) 2021-08-23
ES2386251T3 (en) 2012-08-14
DE102008041982A1 (en) 2010-04-15

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