EP1231040B1 - Roller provided with tools for mobile working machines - Google Patents

Roller provided with tools for mobile working machines Download PDF

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Publication number
EP1231040B1
EP1231040B1 EP02001471A EP02001471A EP1231040B1 EP 1231040 B1 EP1231040 B1 EP 1231040B1 EP 02001471 A EP02001471 A EP 02001471A EP 02001471 A EP02001471 A EP 02001471A EP 1231040 B1 EP1231040 B1 EP 1231040B1
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EP
European Patent Office
Prior art keywords
tools
chucking
boxes
tool
roller
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EP02001471A
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German (de)
French (fr)
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EP1231040A2 (en
EP1231040A3 (en
Inventor
Willi Jacobs
Michael Steinbrecher
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RICHTER, ANGELICA
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B28D1/188—Tools therefor, e.g. having exchangeable cutter bits with exchangeable cutter bits or cutter segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools

Definitions

  • the invention relates to a fitted with tools roller, according to the preamble of claim 1, for mobile machines, especially for road and road construction and forestry mulcher, on the lateral surface of clamping boxes are welded along at least one helical track, all clamping boxes on the same roller are formed and the tools are clamped in the clamping boxes.
  • a roller is known from GB 2 229 354 A.
  • Mobile working machines used in road construction, forestry and landscape management must perform various tasks, such as milling of road surfaces, crushing of milled material, crushing of ballast or packing. Furthermore, the various materials to be processed, such as bitumen, concrete, rock or wood, make different and often unpredictable demands on the machine.
  • An important task is e.g. the milling of a pavement and the simultaneous breaking of the milled material in one pass for reuse for the newly formed pavement.
  • the bits are used to mill asphalt or concrete pavement, while the crusher elements are intended to prevent coarse milled material from settling between the bit holders, and by their cooperation with the crusher bar serve to break this coarse material to a desired maximum grain size.
  • the adaptability of the roller to changed or new milling and crusher tasks is limited.
  • the ratio of the number of the two tools on the roller can be changed only by the fact that the holders and / or recesses for the two types of tools remain partially bare, whereby the performance of the roller is impaired.
  • unequipped mounts enforced during milling with fine material / bitumen need to be cleaned for repopulation and wear out.
  • Another disadvantage of the known Fräsbrecherwalze is that the crusher effect is insufficient due to the interaction of the crusher elements with the crusher bar.
  • the present invention is based on the object, equipped with tools roller for mobile machines, in particular for the road and road construction to create, with the different tasks in the field of milling and / or breaking various materials can be solved.
  • the roller according to the invention it should be possible with the roller according to the invention to approach milling and / or crusher tasks with one and the same roller on a trial basis and / or to optimize performance. It should be possible to systematically change the achievable with the machine milling, lifting and crushing effect without requiring a roll change is required, and the change in the effect should be possible without affecting the performance (or the tool density on the roller). Further advantages will become apparent from the following description.
  • the tools of at least one kind of tool are integrally formed.
  • These one-piece tools are generally flat tools, which preferably have a lifting function and / or in cooperation with a breaker bar a crusher function.
  • These tools generally have a fixed arrangement on the roller, i. they are not arranged rotatable about their longitudinal axis in contrast to round shank chisels.
  • Axially symmetrical, two-part tools and non-axisymmetric, one-piece tools are preferably used in the clamping boxes.
  • the axially symmetrical two-part tools are generally round shank bits, e.g. on milling crusher rollers perform the milling work on a road surface and are rotatably supported for the purpose of uniform wear.
  • the tool is therefore not only the axisymmetric round shank bit, but also the associated changeover holder in which the round shank bit is rotatable.
  • the non-axisymmetric, one-piece tools are generally tools that perform the lifting work and the crusher work. In general, however, it can be said that the various types of tools usually fulfill several functions. In addition to their milling function, round shank bits also have a less pronounced lifting and breaking function, while the non-axisymmetric tools, in particular, e.g. Flat chisel in addition to the lifting and crushing effect also have a certain milling action.
  • one to three wedges are formed on the clamping part of the tool, are also in each clamping box one to three exception (s) for the or the wedge (e) of the clamping part is formed and the clamping part of the tool and the clamping box are held by a screw in mutual wedging engagement.
  • This mutual wedging of the tool with the clamping box the loosening of the tool in the clamping box is almost completely avoided. Even if the tool should loosen over time, this can be eliminated by tightening the screw and thereby further retracting the wedges in the wedge shots.
  • This embodiment also includes the variant in which the or the wedge (s) are integrally formed on the clamping box and the wedge mount (s) are formed in the tool.
  • the tool or the clamping box has two wedges or wedge shots.
  • two symmetrical to its center plane wedges are formed on the clamping part of the tool and contains each clamping box two cooperating with the wedges recordings.
  • the arrangement of a respective wedge connection on both sides of a stable locking between the clamping part of the tool and the clamping box is achieved.
  • one of the two wedge surfaces of each wedge connection runs parallel to the screw axis.
  • the heights h of the tools of the different types of tools are substantially the same.
  • the axially symmetric tools namely the round shank chisel
  • the non-axisymmetric tools such as the flat chisel or chisel
  • the tools of the two (and possibly further) tool types are round shank chisel and flat chisel.
  • the tools of the two or more types of tools rotatably supported round shank chisel and immovably supported flat chisel.
  • each type of tool also contributes to the work done by the other type of tool, i.
  • the flat chisels also perform milling work and the round shank chisels work in conjunction with the breaker bar also crusher work.
  • the pitch a / b of the helical track, along which the clamping boxes are arranged in the range of 0.22 to 1.
  • the slope of this track on the cylindrical roll shell is thus larger in the embodiments than in known Fräsbrecherwalzen, as for example in DE 43 24 234.0 are shown.
  • Figure 1 shows on a segment of the roller 2 four along a helical track on the roll surface 2 a welded clamping boxes 3.
  • a change holder 4 are clamped in a manner below on the hand Figures 3 to 5 will be described in more detail.
  • the left change holder 4 is set up for the rotary holder of a round shank chisel 7 and for this purpose contains a receiving bore 6, which is indicated in FIG. 3, for receiving the chisel shank.
  • the right in Figure 1 changeover holder 4 has an angular tool holder 6 with threaded hole 4 c for screwing a tool 28 with a hard metal plate 29 by means of screw 30.
  • the clamping box 3 on the left in FIG. 1 and the second clamping box 3 on the right each contain a one-piece tool 31, at the upper end of which a cemented carbide cutting edge 32 is fixed inextricably, for example by pouring or brazing.
  • the tools 31 as well as the changeover holder 4 are formed, so that the positions of the tools 31 and equipped with tools 7 and 28 changeover holder 4 are interchangeable.
  • the tool parts 31 ' also symmetrically to its center plane integrally formed wedges 10, which engage in corresponding recesses 11 in the clamping boxes 3.
  • the heights h of the tools 7; 31.32; 28,29 above the surface 2 a of the roller equal to one another.
  • the figure shows four different tools on the roller for the purpose of explanation. In practice, the roller is generally equipped with only two or three different tools.
  • FIG 2 shows four joined sections of rolls loaded with differently blended tools.
  • Each section comprises a helical turn of the track 33.
  • five clamping boxes 3 are arranged on one turn, are used in the changeover holder 4 with round shank chisels 7,16 or 30 fastened by two-edged flat chisels 28,29.
  • the pitch a / b of the helical track 33 is about 0.28.
  • Above the clamping boxes their key figures are entered, under which the coordinates of the clamping box positions are tabulated as angle and axial distance with respect to reference planes (not specified).
  • double-edged flat bits 28, 29 of substantial overall width e.g., 25-40 mm
  • the illustrated two-edged flat chisels may be at least partially replaced by single-edged flat chisels (chisel punches) having only a cutting width of e.g. 10-12 mm.
  • the quick change holder system for the round shank chisel 1 consists essentially of a welded on the roller 2 box 3, a releasably clamped in the box 3 in the manner described below change holder 4 and a clamping screw 5.
  • the change holder 4 contains a
  • the chisel 1 is held detachably in the receptacle 6 with the aid of a spring sleeve, which is not shown in FIG. 3 and is described in more detail in DE 100 44 369.9 to FIG.
  • the diameter of the chisel head 7 at its base is sufficiently large to cover the wear-prone bearing surface 8 of the chisel holder.
  • the changeover holder 4 has symmetrical, wedge-shaped projections 10 on both sides to the median plane 9, which engage in corresponding wedge-shaped recesses 11 in the wings of the box 3.
  • the change holder 4 can therefore from the front, ie in the direction of the arrow Y, are inserted into the box 3 until the wedges 10 come in the wedge-shaped recesses 11 to the plant.
  • the changeover holder 4 can be solved even with heavy contamination by light hammer blows against the back 4 a of the spline connection 10,11.
  • the change holder 4 can be wedged by light hammer blows against the front 4 b again. In this case, a possibly present in the wedge shots contamination by the transverse holes 14 are pushed away to the outside. A worn change holder 4 can therefore be easily replaced on site.
  • a tool 15 To replace a worn chisel 1 one uses a tool 15. At the back of the box 3 is located in the central region approximately at the level of the lower mouth of the receptacle 6, an abutment 3 c , on which the tool for expelling the chisel 1 as shown in FIG 3 can be supported. By light hammer blows on the tool body fitting the expeller tool 15 then the chisel 1 can be easily expelled from the receptacle 6 and replaced.
  • the box 3 is provided on both sides of the median plane 9, each with a runner 3 d . The welding of the box 3 to the roller 2 takes place along these skids 3 d .

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Road Repair (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Clamps And Clips (AREA)
  • Harvester Elements (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

Roller equipped with tools comprises clamping boxes (3) welded onto an outer surface (2a) along at least one screw-like path (33). Two or more types of tools (7, 16, 28, 29) are clamped in a mixed order in the clamping boxes. Preferred Features: The different tools have identical clamping parts and different working parts. Axially symmetrical two-part tools and non-axially symmetrical one-part tools are attached.

Description

Die Erfindung betrifft eine mit Werkzeugen bestückte Walze, gemäß dem Oberbegriff des Anspruchs 1, für mobile Arbeitsmaschinen, insbesondere für den Straßen- und Wegebau sowie als Forstmulcher, auf deren Mantelfläche Spannboxen längs wenigstens einer schraubenförmigen Spur aufgeschweißt sind, wobei alle Spannboxen auf der Walze gleich ausgebildet sind und die Werkzeuge in die Spannboxen eingespannt sind. Eine solche Walze ist aus GB 2 229 354 A bekannt.The invention relates to a fitted with tools roller, according to the preamble of claim 1, for mobile machines, especially for road and road construction and forestry mulcher, on the lateral surface of clamping boxes are welded along at least one helical track, all clamping boxes on the same roller are formed and the tools are clamped in the clamping boxes. Such a roller is known from GB 2 229 354 A.

Mobile Arbeitsmaschinen, die im Straßen- und Wegebau, im Forstbetrieb sowie in der Landschaftspflege eingesetzt werden, müssen verschiedene Aufgaben, wie das Abfräsen von Straßendecken, Zerkleinern des abgefrästen Materials, Brechen von Schotter oder Packlage erfüllen. Ferner stellen die verschiedenen zu bearbeitenden Materialien, wie Bitumen, Beton, Fels oder Holz, unterschiedliche und häufig unvorhersehbare Anforderungen an die Maschine. Eine wichtige Aufgabe ist z.B. das Abfräsen einer Fahrbahndecke und das gleichzeitige Brechen des abgefrästen Materials in einem Durchgang zwecks Wiederverwendung für die gleichzeitig gebildete neue Fahrbahndecke.Mobile working machines used in road construction, forestry and landscape management must perform various tasks, such as milling of road surfaces, crushing of milled material, crushing of ballast or packing. Furthermore, the various materials to be processed, such as bitumen, concrete, rock or wood, make different and often unpredictable demands on the machine. An important task is e.g. the milling of a pavement and the simultaneous breaking of the milled material in one pass for reuse for the newly formed pavement.

Aus DE 43 24 234.0 ist ein Fräsbrecher für den Straßen- und Wegebau mit einer mit Fräsmeißeln bestückten, angetriebenen Walze bekannt. Die Walze trägt auf ihrem Umfang eine große Anzahl von Halterungen, in die jeweils ein Rundschaft-Fräsmeißel eingesetzt ist. Außerdem sind auf der Mantelfläche der Walze über den Walzenumfang und in Querrichtung der Walze verteilte Brecherelemente angebracht. Anders als die Fräsmeißel sind die Brecherelemente in auf der Mantelfläche gebildete Ausnehmungen eingesetzt und mit einem Bolzen in der Walze lösbar befestigt. Die Meißel dienen z.B. zum Abfräsen einer Straßendecke aus Asphalt oder Beton, während die Brecherelemente vermeiden sollen, daß sich grobes abgefrästes Material zwischen die Meißelhalter setzt, und durch ihr Zusammenwirken mit der Brecherleiste dazu dienen, dieses grobe Material auf eine gewünschte Maximalkorngröße zu brechen. Obgleich bei dieser Walze mit den Fräsmeißeln und Brecherelementen zwei unterschiedliche Werkzeuge zum Einsatz kommen, ist die Anpassungsfähigkeit der Walze an veränderte oder neue Fräs- und Brecheraufgaben begrenzt. So kann das Verhältnis der Anzahl der beiden Werkzeuge auf der Walze nur dadurch verändert werden, daß die Halterungen und/oder Ausnehmungen für die beiden Werkzeugarten teilweise unbestückt bleiben, wodurch allerdings die Leistungsfähigkeit der Walze beeinträchtigt wird. Auch besteht dann die Gefahr, daß sich unbestückte Halterungen beim Fräsbetrieb mit Feinmaterial/Bitumen zusetzen, zur Wiederbestückung gereinigt werden müssen und sich abnutzen. Ein weiterer Nachteil der bekannten Fräsbrecherwalze besteht darin, daß die Brecherwirkung durch das Zusammenspiel der Brecherelemente mit der Brecherleiste unzureichend ist.From DE 43 24 234.0 is a Fräsbrecher for road and road construction with a equipped with cutting chisels, driven roller known. The roller carries on its circumference a large number of brackets, in each of which a round shank milling chisel is inserted. In addition, distributed on the outer surface of the roll over the roll circumference and in the transverse direction of the roller crusher elements are mounted. Unlike the milling bits, the crusher elements are inserted in recesses formed on the lateral surface and releasably secured by a bolt in the roller. For example, the bits are used to mill asphalt or concrete pavement, while the crusher elements are intended to prevent coarse milled material from settling between the bit holders, and by their cooperation with the crusher bar serve to break this coarse material to a desired maximum grain size. Although two different tools are used in this roller with the milling bits and crusher elements, the adaptability of the roller to changed or new milling and crusher tasks is limited. Thus, the ratio of the number of the two tools on the roller can be changed only by the fact that the holders and / or recesses for the two types of tools remain partially bare, whereby the performance of the roller is impaired. There is also the risk that unequipped mounts enforced during milling with fine material / bitumen, need to be cleaned for repopulation and wear out. Another disadvantage of the known Fräsbrecherwalze is that the crusher effect is insufficient due to the interaction of the crusher elements with the crusher bar.

Aus DE 100 44 369.9 ist ein Wechselhaltersystem für Werkzeuge auf Fräswalzen bekannt, bei dem jeweils nur eine Werkzeugart, insbesondere Rundschaftmeißel, auf die Walze aufgespannt wird. Ein optimaler Betrieb, bei dem die Walze mehrere Funktionen, wie z.B. Abfräsen einer Decke, Heben und Brechen des abgefrästen Materials, haben muß, ist mit dieser Walze nicht zu erreichen.From DE 100 44 369.9 a change-holder system for tools on milling drums is known in which only one type of tool, in particular round shank chisel, is clamped onto the roller. Optimal operation, in which the roller has several functions, e.g. Milling a blanket, lifting and breaking the milled material must have, can not be reached with this roller.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine mit Werkzeugen bestückte Walze für mobile Arbeitsmaschinen, insbesondere für den Straßen- und Wegebau, zu schaffen, mit der unterschiedliche Arbeitsaufgaben auf dem Gebiet des Fräsens und/oder Brechens verschiedenartiger Werkstoffe gelöst werden können. Insbesondere soll es mit der erfindungsgemäßen Walze möglich sein, Fräs- und/oder Brecheraufgaben mit ein und derselben Walze versuchsmäßig anzugehen und/oder leistungsmäßig zu optimieren. Dabei soll eine systematische Veränderung der mit der Maschine erreichbaren Fräs-, Hebe- und Brecherwirkung möglich sein, ohne daß dazu ein Walzenwechsel erforderlich ist, und die Veränderung der Wirkung soll ohne Beeinträchtigung der Leistung (oder der Werkzeugdichte auf der Walze) möglich sein. Weitere Vorteile ergeben sich aus der nachfolgenden Beschreibung.The present invention is based on the object, equipped with tools roller for mobile machines, in particular for the road and road construction to create, with the different tasks in the field of milling and / or breaking various materials can be solved. In particular, it should be possible with the roller according to the invention to approach milling and / or crusher tasks with one and the same roller on a trial basis and / or to optimize performance. It should be possible to systematically change the achievable with the machine milling, lifting and crushing effect without requiring a roll change is required, and the change in the effect should be possible without affecting the performance (or the tool density on the roller). Further advantages will become apparent from the following description.

Diese Aufgabe wird bei der eingangs genannten Walze erfindungsgemäß dadurch gelöst, daß in den auf der wenigstens einen schraubenförmigen Spur angeordneten Spannboxen zwei oder mehr Arten Werkzeuge angebracht sind, die einen gleichen, in die Spannboxen passenden Spannteil und unterschiedlich ausgebildete Arbeitsteile aufweisen. Es wurde gefunden, daß durch die Mischung von zwei oder mehr Werkzeugarten auf der Walze eine für die jeweilige Arbeitsaufgabe optimale Wirkung erreicht werden kann. Dabei kann es durchaus nötig sein, die Art der eingesetzten Werkzeuge und das Verhältnis der Mengenanzahl der verschiedenartigen Werkzeuge versuchsmäßig zu verändern, um die jeweils optimale kombinierte Wirkung der Werkzeuge herauszufinden. Da alle Spannboxen auf der Walze gleich ausgebildet sind und die Werkzeuge den gleichen, in die Spannboxen passenden Spannteil haben, ist ein vollständiger gegenseitiger Austausch und eine beliebige Mischung der Werkzeuge auf der Walze möglich, was Voraussetzung dafür ist, daß verschiedene, den jeweiligen Arbeitszweck erfüllende Wirkungen im Betrieb erreicht werden können.This object is achieved according to the invention in the above-mentioned roller, that in the arranged on the at least one helical track clamping boxes two or more types of tools are attached, which have the same, in the clamping boxes matching clamping part and differently designed working parts. It has been found that by mixing two or more types of tools on the roll, an optimum effect for the particular work task can be achieved. It may well be necessary to experimentally change the type of tools used and the ratio of the number of different tools in order to find out the optimal combined effect of the tools. Since all clamping boxes on the roller are the same design and the tools have the same, in the clamping boxes matching clamping part, a complete mutual exchange and any mixture of tools on the roller is possible, which is a prerequisite that different, fulfilling the respective purpose Effects in operation can be achieved.

Bevorzugte Ausführungsformen der Erfindung sind den abhängigen Ansprüchen zu entnehmen.Preferred embodiments of the invention can be found in the dependent claims.

Bei einer bevorzugten Ausführungsform der erfindungsgemäßen Walze sind die Werkzeuge wenigstens einer Werkzeugart einteilig ausgebildet. Diese einteiligen Werkzeuge sind im allgemeinen Flachwerkzeuge, die bevorzugt eine Hebefunktion und/oder im Zusammenwirken mit einer Brecherleiste eine Brecherfunktion haben. Diese Werkzeuge haben auf der Walze im allgemeinen eine feste Anordnung, d.h. sie sind im Gegensatz zu Rundschaftmeißeln nicht um ihre Längsachse drehbar angeordnet.In a preferred embodiment of the roller according to the invention, the tools of at least one kind of tool are integrally formed. These one-piece tools are generally flat tools, which preferably have a lifting function and / or in cooperation with a breaker bar a crusher function. These tools generally have a fixed arrangement on the roller, i. they are not arranged rotatable about their longitudinal axis in contrast to round shank chisels.

Vorzugsweise sind in die Spannboxen axialsymmetrische, zweiteilig ausgebildete Werkzeuge und nicht-axialsymmetrische, einteilig ausgebildete Werkzeuge eingesetzt. Die axialsymmetrischen zweiteiligen Werkzeuge sind im allgemeinen Rundschaftmeißel, die z.B. auf Fräsbrecherwalzen die Fräsarbeit an einer Straßendecke leisten und zwecks gleichmäßigen Verschleißes drehbar gehaltert sind. Das Werkzeug ist daher nicht nur der axialsymmetrische Rundschaftmeißel, sondern auch der dazugehörige Wechselhalter, in dem der Rundschaftmeißel drehbar ist. Die nicht-axialsymmetrischen, einteilig ausgebildeten Werkzeuge sind im allgemeinen Werkzeuge, die die Hebearbeit und die Brecherarbeit leisten. Generell läßt sich aber sagen, daß die verschiedenen Werkzeugarten meistens mehrere Funktionen erfüllen. So haben Rundschaftmeißel neben ihrer Fräsfunktion auch eine weniger ausgeprägte Hebe- und Brecherfunktion, während die nicht-axialsymmetrischen Werkzeuge, insbesondere z.B. Flachmeißel neben der Hebe- und Brecherwirkung auch eine gewisse Fräswirkung aufweisen.Axially symmetrical, two-part tools and non-axisymmetric, one-piece tools are preferably used in the clamping boxes. The axially symmetrical two-part tools are generally round shank bits, e.g. on milling crusher rollers perform the milling work on a road surface and are rotatably supported for the purpose of uniform wear. The tool is therefore not only the axisymmetric round shank bit, but also the associated changeover holder in which the round shank bit is rotatable. The non-axisymmetric, one-piece tools are generally tools that perform the lifting work and the crusher work. In general, however, it can be said that the various types of tools usually fulfill several functions. In addition to their milling function, round shank bits also have a less pronounced lifting and breaking function, while the non-axisymmetric tools, in particular, e.g. Flat chisel in addition to the lifting and crushing effect also have a certain milling action.

Vorzugsweise sind an dem Spannteil des Werkzeugs ein bis drei Keile ausgebildet, sind ferner in jeder Spannbox eine bis drei Ausnahme(n) für den bzw. die Keil(e) des Spannteils ausgebildet und sind der Spannteil des Werkzeugs und die Spannbox durch eine Schraube in gegenseitigem Keileingriff gehalten. Durch diese gegenseitige Verkeilung des Werkzeugs mit der Spannbox wird das Lockerwerden des Werkzeugs in der Spannbox fast vollständig vermieden. Selbst wenn sich das Werkzeug mit der Zeit lockern sollte, kann dies durch Anziehen der Schraube und dadurch weiteres Einziehen der Keile in die Keilaufnahmen wieder beseitigt werden. Diese Ausführungsform umfaßt auch die Variante, bei der der bzw. die Keil(e) an der Spannbox angeformt sind und die Keilaufnahme(n) in dem Werkzeug ausgebildet sind. Vorzugsweise hat das Werkzeug bzw. die Spannbox zwei Keile bzw. Keilaufnahmen.Preferably, one to three wedges are formed on the clamping part of the tool, are also in each clamping box one to three exception (s) for the or the wedge (e) of the clamping part is formed and the clamping part of the tool and the clamping box are held by a screw in mutual wedging engagement. This mutual wedging of the tool with the clamping box, the loosening of the tool in the clamping box is almost completely avoided. Even if the tool should loosen over time, this can be eliminated by tightening the screw and thereby further retracting the wedges in the wedge shots. This embodiment also includes the variant in which the or the wedge (s) are integrally formed on the clamping box and the wedge mount (s) are formed in the tool. Preferably, the tool or the clamping box has two wedges or wedge shots.

Zweckmäßigerweise sind an dem Spannteil des Werkzeugs zwei zu seiner Mittelebene symmetrisch angeordnete Keile ausgebildet und enthält jede Spannbox zwei mit den Keilen zusammenwirkende Aufnahmen. Durch die Anordnung von je einer Keilverbindung auf beiden Seiten wird eine stabile Verblockung zwischen dem Spannteil des Werkzeugs und der Spannbox erreicht. Außerdem ergibt sich eine geringe Bauhöhe und damit mechanische Stabilität, weil die Keilverbindungen nicht zwangsläufig die Bauhöhe h über der Walzenmantelfläche vergrößern, sondern auch beiderseits neben der Schraube angeordnet sein können. Zweckmäßigerweise verläuft eine der beiden Keilflächen jeder Keilverbindung parallel zur Schraubenachse.Conveniently, two symmetrical to its center plane wedges are formed on the clamping part of the tool and contains each clamping box two cooperating with the wedges recordings. The arrangement of a respective wedge connection on both sides of a stable locking between the clamping part of the tool and the clamping box is achieved. In addition, results in a low height and thus mechanical stability, because the wedges do not necessarily increase the height h on the roll shell surface, but can also be arranged on both sides next to the screw. Conveniently, one of the two wedge surfaces of each wedge connection runs parallel to the screw axis.

Nach der bevorzugten Ausführungsform der erfindungsgemäßen Walze sind die Höhen h der Werkzeuge der verschiedenen Werkzeugarten im wesentlichen gleich. Insbesondere haben die axialsymmetrischen Werkzeuge, nämlich die Rundschaftmeißel, und die nicht-axialsymmetrischen Werkzeuge, z.B. die Flachmeißel oder Schrämmeißel, gleiche Höhe. Hierdurch wird der Verschleiß der punktuell einwirkenden, den Fräsvorgang bewirkenden Werkzeuge und der flächig wirksamen, die Hebung und Brechung des abgefrästen Materials bewirkenden Werkzeuge etwa gleich gehalten, so daß beide Werkzeugarten etwa nach gleichen Betriebszeiten ausgetauscht werden müssen. Zweckmäßigerweise sind die Werkzeuge der beiden (und ggfs weiterer) Werkzeugarten Rundschaftmeißel und Flachmeißel.According to the preferred embodiment of the roll according to the invention, the heights h of the tools of the different types of tools are substantially the same. In particular, the axially symmetric tools, namely the round shank chisel, and the non-axisymmetric tools, such as the flat chisel or chisel, the same height. As a result, the wear of punctually acting, the milling process causing tools and the effective area, the lifting and refraction of the milled material causing tools held about the same, so that both types of tools must be replaced about the same operating times. Conveniently, the tools of the two (and possibly further) tool types are round shank chisel and flat chisel.

Zweckmäßigerweise sind die Werkzeuge der zwei oder mehr Werkzeugarten drehbar gehalterte Rundschaftmeißel und unbeweglich gehalterte Flachmeißel. Bei gleicher Höhe beider Werkzeugarten leistet jede Werkzeugart auch einen Beitrag zu der Arbeit, die die jeweils andere Werkzeugart leistet, d.h. die Flachmeißel leisten auch Fräsarbeit und die Rundschaftmeißel leisten im Zusammenwirken mit der Brecherleiste auch Brecherarbeit.Conveniently, the tools of the two or more types of tools rotatably supported round shank chisel and immovably supported flat chisel. With the same height of both types of tools, each type of tool also contributes to the work done by the other type of tool, i. The flat chisels also perform milling work and the round shank chisels work in conjunction with the breaker bar also crusher work.

Vorzugsweise liegt die Steigung a/b der schraubenförmigen Spur, längs der die Spannboxen angeordnet sind, in dem Bereich von 0,22 bis 1. Die Steigung dieser Spur auf dem zylindrischen Walzenmantel ist damit bei den Ausführungen größer als bei bekannten Fräsbrecherwalzen, wie sie beispielsweise in DE 43 24 234.0 dargestellt sind.Preferably, the pitch a / b of the helical track, along which the clamping boxes are arranged, in the range of 0.22 to 1. The slope of this track on the cylindrical roll shell is thus larger in the embodiments than in known Fräsbrecherwalzen, as for example in DE 43 24 234.0 are shown.

Die Erfindung wird nachfolgend an Hand der Zeichnung näher beschrieben. Es zeigen

  • Figur 1 die Teildarstellung einer erfindungsgemäßen Walze mit vier unterschiedlichen Werkzeugen in der Seitenansicht und teilweise im Schnitt;
  • Figur 2 die aneinandergefügten Abschnitte der Abwicklungen von Walzen mit Spannboxen und darin eingestannten Wechselhaltern mit Werkzeugen in unterschiedlicher Mischung;
  • Figur 3 die Seitenansicht einer weiteren Ausführungsform des Systems aus Wechselhalter und Spannbox mit einem in den Wechselhalter eingesetzten Rundschaftmeißel, teilweise im Schnitt;
  • Figur 4 die Ansicht des in Figur 3 gezeigten Aggregats ohne den Meißel in Richtung des Pfeils Y gesehen; und
  • Figur 5 die Ansicht des in Figur 3 gezeigten Aggregats ohne den Meißel in Richtung des Pfeils Z gesehen.
The invention will be described in more detail with reference to the drawing. Show it
  • Figure 1 shows the partial view of a roller according to the invention with four different tools in the side view and partly in section;
  • Figure 2 shows the joined sections of the unwinds of rollers with clamping boxes and therein exchangeable holders with tools in different mix;
  • Figure 3 shows the side view of another embodiment of the system of change holder and clamping box with a round shank bit inserted into the change holder, partly in section;
  • Figure 4 is the view of the unit shown in Figure 3 without the chisel seen in the direction of arrow Y; and
  • Figure 5 is the view of the unit shown in Figure 3 without the chisel seen in the direction of arrow Z.

Figur 1 zeigt auf einem Segment der Walze 2 vier längs einer schraubenförmigen Spur auf die Walzenoberfläche 2a aufgeschweißte Spannboxen 3. In die von links zweite und in die rechte Spannbox 3 sind jeweils ein Wechselhalter 4 in einer Weise eingespannt, die weiter unten an Hand der Figuren 3 bis 5 näher beschrieben wird. Der linke Wechselhalter 4 ist für die Drehhalterung eines Rundschaftmeißels 7 eingerichtet und enthält hierzu für die Aufnahme des Meißelschaftes eine Aufnahmebohrung 6, die in Figur 3 angedeutet ist. Der in Figur 1 rechte Wechselhalter 4 hat eine winkelförmige Werkzeugaufnahme 6 mit Gewindebohrung 4c zum Anschrauben eines Werkzeugs 28 mit einer Hartmetallplatte 29 mittels Schraube 30. In seinem Unterteil ist dieser Wechselhalter ebenso wie der Wechselhalter 4 für den Rundschaftmeißel 7 ausgebildet und mit zwei angeformten Keilen 10 mit entsprechenden keilförmigen Ausnehmungen 11 der Spannbox 3 in Eingriff, wie aus den Figuren 3 bis 5 näher ersichtlich ist.Figure 1 shows on a segment of the roller 2 four along a helical track on the roll surface 2 a welded clamping boxes 3. In the left from the left and in the right clamping box 3, a change holder 4 are clamped in a manner below on the hand Figures 3 to 5 will be described in more detail. The left change holder 4 is set up for the rotary holder of a round shank chisel 7 and for this purpose contains a receiving bore 6, which is indicated in FIG. 3, for receiving the chisel shank. The right in Figure 1 changeover holder 4 has an angular tool holder 6 with threaded hole 4 c for screwing a tool 28 with a hard metal plate 29 by means of screw 30. In its lower part of this change holder as well as the change holder 4 is formed for the round shank chisel 7 and two integrally formed wedges 10 with corresponding wedge-shaped recesses 11 of the clamping box 3 into engagement, as is more apparent from Figures 3 to 5.

Die in Figur 1 linke Spannbox 3 und die zweite Spannbox 3 von rechts enthalten dagegen je ein einteiliges Werkzeug 31, an dessen oberem Ende eine Hartmetallschneide 32 unlösbar, z.B. durch Eingießen oder Hartlöten, befestigt ist. Im unteren Teil 31' sind die Werkzeuge 31 ebenso wie die Wechselhalter 4 ausgebildet, so daß die Positionen der Werkzeuge 31 und der mit Werkzeugen 7 und 28 bestückten Wechselhalter 4 austauschbar sind. Insbesondere haben die Werkzeugteile 31' auch symmetrisch zu ihrer Mittelebene angeformte Keile 10, die in entsprechende Ausnehmungen 11 in den Spannboxen 3 eingreifen. Wie aus Figur 1 ersichtlich ist, sind die Höhen h der Werkzeuge 7; 31,32; 28,29 über der Oberfläche 2a der Walze untereinander gleich. Die Figur zeigt vier unterschiedliche Werkzeuge auf der Walze zum Zwecke ihrer Erläuterung. In der Praxis ist die Walze im allgemeinen nur mit zwei oder drei unterschiedlichen Werkzeugen bestückt.On the other hand, the clamping box 3 on the left in FIG. 1 and the second clamping box 3 on the right each contain a one-piece tool 31, at the upper end of which a cemented carbide cutting edge 32 is fixed inextricably, for example by pouring or brazing. In the lower part 31 ', the tools 31 as well as the changeover holder 4 are formed, so that the positions of the tools 31 and equipped with tools 7 and 28 changeover holder 4 are interchangeable. In particular, the tool parts 31 'also symmetrically to its center plane integrally formed wedges 10, which engage in corresponding recesses 11 in the clamping boxes 3. As can be seen from Figure 1, the heights h of the tools 7; 31.32; 28,29 above the surface 2 a of the roller equal to one another. The figure shows four different tools on the roller for the purpose of explanation. In practice, the roller is generally equipped with only two or three different tools.

Figur 2 zeigt vier aneinandergefügte Abschnitte aus Walzen, die mit unterschiedlich gemischten Werkzeugen bestückt sind. Jeder Abschnitt umfaßt eine schraubenförmige Windung der Spur 33. In dem dargestellten Falle sind auf einer Windung jeweils fünf Spannboxen 3 angeordnet, in die Wechselhalter 4 mit Rundschaftmeißeln 7,16 oder mittels Schraube 30 befestigten zweischneidigen Flachmeißeln 28,29 eingesetzt sind. Wie ersichtlich, sind beide Werkzeugtypen unterschiedlich gemischt eingesetzt. Die Steigung a/b der schraubenförmigen Spur 33 liegt bei etwa 0,28. Oberhalb der Spannboxen sind ihre Kennzahlen eingetragen, unter denen die Koordinaten der Spannboxpositionen als Winkel und Axialabstand gegenüber Bezugsebenen tabellarisch erfaßt sind (nicht angegeben). In Figur 2 sind zweischneidige Flachmeißel 28,29 von erheblicher Gesamtbreite (z.B. 25-40 mm) dargestellt, deren Spurbreiten sich bei der Walzendrehung teilweise überlappen. Um diese Überlappung teilweise oder ganz zu vermeiden, können die dargestellten zweischneidigen Flachmeißel wenigstens zum Teil durch einschneidige Flachmeißel (Schrämmeißel) ersetzt werden, die nur eine Schneidenbreite von z.B. 10-12 mm haben.Figure 2 shows four joined sections of rolls loaded with differently blended tools. Each section comprises a helical turn of the track 33. In the illustrated case, five clamping boxes 3 are arranged on one turn, are used in the changeover holder 4 with round shank chisels 7,16 or 30 fastened by two-edged flat chisels 28,29. As can be seen, both types of tools are used mixed differently. The pitch a / b of the helical track 33 is about 0.28. Above the clamping boxes their key figures are entered, under which the coordinates of the clamping box positions are tabulated as angle and axial distance with respect to reference planes (not specified). In Figure 2, double-edged flat bits 28, 29 of substantial overall width (e.g., 25-40 mm) are shown, whose track widths partially overlap during roller rotation. To partially or completely avoid this overlap, the illustrated two-edged flat chisels may be at least partially replaced by single-edged flat chisels (chisel punches) having only a cutting width of e.g. 10-12 mm.

Nach den Figuren 3 bis 5 besteht das Schnellwechselhaltersystem für den Rundschaftmeißel 1 im wesentlichen aus einer auf die Walze 2 aufgeschweißten Box 3, einem in die Box 3 in der nachfolgend beschriebenen Weise lösbar eingespannten Wechselhalter 4 und einer Spannschraube 5. Der Wechselhalter 4 enthält eine als zylindrische Bohrung ausgebildete Aufnahme 6 für den Schaft 16 des Rundschaftmeißels 1. Der Meißel 1 ist in der Aufnahme 6 mit Hilfe einer Federhülse lösbar gehalten, die in Figur 3 nicht dargestellt ist und in DE 100 44 369.9 zu Figur 7 näher beschrieben ist. Der Durchmesser des Meißelkopfes 7 an seiner Basis ist genügend groß, um die Verschleißgefährdete Auflagefläche 8 des Meißelhalters zu überdecken.According to Figures 3 to 5, the quick change holder system for the round shank chisel 1 consists essentially of a welded on the roller 2 box 3, a releasably clamped in the box 3 in the manner described below change holder 4 and a clamping screw 5. The change holder 4 contains a The chisel 1 is held detachably in the receptacle 6 with the aid of a spring sleeve, which is not shown in FIG. 3 and is described in more detail in DE 100 44 369.9 to FIG. The diameter of the chisel head 7 at its base is sufficiently large to cover the wear-prone bearing surface 8 of the chisel holder.

Wie aus den Figuren 3 und 4 ersichtlich ist, hat der Wechselhalter 4 auf beiden Seiten zur Mittelebene 9 symmetrische, keilförmige Anformungen 10, die in entsprechend keilförmige Ausnehmungen 11 in den Flügeln der Box 3 eingreifen. Der Wechselhalter 4 kann daher von vorne, d.h. in Richtung des Pfeils Y, in die Box 3 eingeschoben werden, bis die Keile 10 in den keilförmigen Ausnehmungen 11 zur Anlage kommen.As can be seen from Figures 3 and 4, the changeover holder 4 has symmetrical, wedge-shaped projections 10 on both sides to the median plane 9, which engage in corresponding wedge-shaped recesses 11 in the wings of the box 3. The change holder 4 can therefore from the front, ie in the direction of the arrow Y, are inserted into the box 3 until the wedges 10 come in the wedge-shaped recesses 11 to the plant.

An dem Wechselhalter 4 ist zwischen den Anformungen 10 vorne eine nach unten gezogene Stirnwand 12 mit einer Gewindebohrung 12a angeformt. Die Box 3 ist dagegen hinten im mittleren Bereich nach unten gezogen und mit einer Durchgangsbohrung 3a mit einer Senkung 3b versehen. Durch die in die Gewindebohrung 12a eingeschraubte, mit ihrem Kopf 5a in der Senkung 3b abgestützte Spannschraube 5 wird der Wechselhalter 4 mit seinen Keilen 10 in die Keilausnehmungen 11 gezogen. Dadurch ergibt sich zwischen dem Wechselhalter 4 und der Box 3 eine verschleißarme Verbindung bei kompaktem Aufbau des Aggregats. Die Spannschraube 5 liegt parallel zur Tangentialebene 13, an der Oberfläche der Walze 2 in der Mitte C der Box 3, wodurch sich die im Vergleich zu dem bekannten Wechselhaltersystem geringe Bauhöhe (Abstand A-B der Meißelspitze von der Walzenoberfläche = Höhe h) ergibt. Anders als bei dem bekannten Wechselhaltersystem bedart eszumAn-undAbbaudes Wechselhalters 4 keinesSpezialwerkzeugs. Nach dem Lösen der Spannschraube 5 aus dem Gewinde 12a kann der Wechselhalter 4 auch bei starker Verschmutzung durch leichte Hammerschläge gegen den Rücken 4a aus der Keilverbindung 10,11 gelöst werden. Umgekehrt kann der Wechselhalter 4 durch leichte Hammerschläge gegen die Vorderseite 4b wieder verkeilt werden. Dabei kann eine in den Keilaufnahmen evtl. vorhandene Verschmutzung durch die Querbohrungen 14 nach außen weggedrückt werden. Ein verschlissener Wechselhalter 4 kann daher mühelos auf der Baustelle ausgetauscht werden.At the change holder 4 is a downwardly drawn end wall 12 with a threaded bore 12 a formed between the projections 10 in front. The box 3, however, pulled back in the middle area down and provided with a through hole 3 a with a reduction 3 b . By the screwed into the threaded bore 12 a , with its head 5 a in the reduction 3 b supported clamping screw 5, the changeover holder 4 is pulled with its wedges 10 in the wedge recesses 11. This results between the change holder 4 and the box 3 a low-wear connection in a compact design of the unit. The clamping screw 5 is parallel to the tangential plane 13, on the surface of the roller 2 in the middle C of the box 3, which results in comparison to the known swivel system low height (distance AB of the chisel tip of the roll surface = height h). Unlike the known swap-holder system, there is no special tool for mounting and dismounting the swap holder 4. After loosening the clamping screw 5 from the thread 12 a , the changeover holder 4 can be solved even with heavy contamination by light hammer blows against the back 4 a of the spline connection 10,11. Conversely, the change holder 4 can be wedged by light hammer blows against the front 4 b again. In this case, a possibly present in the wedge shots contamination by the transverse holes 14 are pushed away to the outside. A worn change holder 4 can therefore be easily replaced on site.

Zum Austausch eines verschlissenen Meißels 1 bedient man sich eines Werkzeugs 15. An der Rückseite der Box 3 befindet sich im mittleren Bereich etwa auf Höhe der unteren Mündung der Aufnahme 6 ein Widerlager 3c, auf dem das Werkzeug zum Austreiben des Meißels 1 wie in Figur 3 dargestellt abgestützt werden kann. Durch leichte Hammerschläge auf das dem Meißelschaftboden anliegende Austreiberwerkzeug 15 kann dann der Meißel 1 mühelos aus der Aufnahme 6 ausgetrieben und ersetzt werden. Die Box 3 ist auf beiden Seiten der Mittelebene 9 mit je einer Kufe 3d versehen. Die Anschweißung der Box 3 an die Walze 2 erfolgt längs dieser Kufen 3d.To replace a worn chisel 1 one uses a tool 15. At the back of the box 3 is located in the central region approximately at the level of the lower mouth of the receptacle 6, an abutment 3 c , on which the tool for expelling the chisel 1 as shown in FIG 3 can be supported. By light hammer blows on the tool body fitting the expeller tool 15 then the chisel 1 can be easily expelled from the receptacle 6 and replaced. The box 3 is provided on both sides of the median plane 9, each with a runner 3 d . The welding of the box 3 to the roller 2 takes place along these skids 3 d .

Claims (7)

  1. Roller (2) equipped with tools for mobile working machines, particularly for the construction of streets and roads, with chucking boxes (3) welded on the roll surface (2a) along at least one helical track (33), all said chucking boxes (3) on the roll (2) being equally formed and the tools being chucked in the chucking boxes (3), characterized in that for diversified working tasks in the field of milling and/or crushing various materials two or more types of tools are mounted in the chucking boxes (3) disposed on said at least one helical track (33), said two or more types of tools comprise equal chuck portions fitting into the chucking boxes (3) and differently formed working portions.
  2. Roller according to claim 1, characterized in that the tools (31) of at least one type of tool are formed as one piece.
  3. Roller according to claim 1 or 2, characterized in that axial symmetrical two-part tools and axial unsymmetrical tools formed as one piece are mounted.
  4. Roller according to any of the claims 1 to 3, characterized in that one to three wedges (10) are formed at the chuck portion (31') of the tool, one to three recesses (11) for the wedge(s) (10) of the chuck portion (31') are formed in each chucking box (3), and the chuck portion (31') of the tool and the chucking box (3) are held in a mutual wedge engagement by clamping means.
  5. Roller according to any of the claims 1 to 4, characterized in that the height h of the inserted tools of different types of tools is substantially equal.
  6. Roller according to any of the claims 1 to 5, characterized in that the tools of said two or more types of tool are rotatably supported round shank bits and immovably supported flat chisels.
  7. Roller according to any of the claims 1 to 6, characterized in that the pitch a/b of the helical track (33) along which the chucking boxes (3) are disposed is in the range from 0.22 to 1.0.
EP02001471A 2001-02-12 2002-01-22 Roller provided with tools for mobile working machines Revoked EP1231040B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10106381 2001-02-12
DE10106381A DE10106381B4 (en) 2001-02-12 2001-02-12 Roller equipped with tools for mobile machines

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EP1231040A2 EP1231040A2 (en) 2002-08-14
EP1231040A3 EP1231040A3 (en) 2004-04-21
EP1231040B1 true EP1231040B1 (en) 2006-11-29

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DE102009052351A1 (en) * 2009-11-07 2011-05-12 Michael Steinbrecher milling drum
US10174464B2 (en) 2016-06-16 2019-01-08 Horace A. Thompson Ground contouring apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1154040A (en) * 1980-04-21 1983-09-20 William P. Sulosky Means for holding cutter bits
GB2118227B (en) * 1982-04-08 1985-11-06 Kennametal Inc Earthworking tool and method for protecting from abnormally high cutting loads
US4542943A (en) * 1982-04-08 1985-09-24 Kennametal Inc. Earthworking tool for protecting from abnormally high cutting loads
DE3431551A1 (en) * 1983-09-20 1985-04-11 Société Dupré S.r.L., Saint-Etienne SAFETY HOOK FOR ELASTIC FASTENING AND HOLDING ROPES
DE3442875A1 (en) * 1984-11-24 1986-05-28 Bergwerksverband Gmbh, 4300 Essen Coal-extracting apparatus
US4915455A (en) * 1988-11-09 1990-04-10 Joy Technologies Inc. Miner cutting bit holding apparatus
US5199195A (en) * 1989-10-10 1993-04-06 Scordilis Frank P Articulated toothed excavating apparatus
DE4324234A1 (en) * 1993-07-20 1995-01-26 Willi Jacobs Milling breaker
DE4431551C2 (en) * 1994-09-05 2002-11-07 Michael Steinbrecher Crusher with a frame in which a driven, stone-breaking rotor is mounted
GB2299354A (en) * 1995-03-31 1996-10-02 Rogers Tools An apparatus and method for shearing rock, rock-like material and mineral deposits with reduced drum chatter

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DE10106381A1 (en) 2002-09-12
EP1231040A2 (en) 2002-08-14
ES2276861T3 (en) 2007-07-01
ATE346730T1 (en) 2006-12-15
EP1231040A3 (en) 2004-04-21
DE10106381B4 (en) 2005-03-17
DE50208817D1 (en) 2007-01-11

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