EP1159511B1 - Chisel holder changing system - Google Patents

Chisel holder changing system Download PDF

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Publication number
EP1159511B1
EP1159511B1 EP00904946A EP00904946A EP1159511B1 EP 1159511 B1 EP1159511 B1 EP 1159511B1 EP 00904946 A EP00904946 A EP 00904946A EP 00904946 A EP00904946 A EP 00904946A EP 1159511 B1 EP1159511 B1 EP 1159511B1
Authority
EP
European Patent Office
Prior art keywords
chisel
chisel holder
holder
base part
changing system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00904946A
Other languages
German (de)
French (fr)
Other versions
EP1159511A1 (en
Inventor
Bernd Holl
Dieter Simons
Günter HÄHN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wirtgen GmbH
Original Assignee
Wirtgen GmbH
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Filing date
Publication date
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Publication of EP1159511A1 publication Critical patent/EP1159511A1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18Mining picks; Holders therefor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18Mining picks; Holders therefor
    • E21C35/188Mining picks; Holders therefor characterised by adaptations to use an extraction tool
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18Mining picks; Holders therefor
    • E21C35/19Means for fixing picks or holders
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18Mining picks; Holders therefor
    • E21C35/19Means for fixing picks or holders
    • E21C35/191Means for fixing picks or holders for fixing holders
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C35/00Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18Mining picks; Holders therefor
    • E21C35/19Means for fixing picks or holders
    • E21C35/193Means for fixing picks or holders using bolts as main fixing elements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32254Lockable at fixed position
    • Y10T403/32262At selected angle

Definitions

  • the invention relates to a chisel holder exchange system for a road milling machine, a cutting machine or the like with a base to which a chisel holder is interchangeably attached by means of a connecting mechanism, wherein the chisel holder interchangeably receives at least one chisel, wherein the central longitudinal axis of the chisel with respect to the surface to be machined at working angle smaller is employed as 90 °.
  • the chisel holder exchange system has a base part which is welded on a surface of a Walzenkörpes projecting.
  • the base part has a plug-in receptacle into which a plug-in insert of the bit holder can be inserted.
  • the chisel holder is provided with a receiving bore into which a chisel shank of a round shank chisel is inserted.
  • the bit holder can be clamped to the base part by means of a fastening screw.
  • the central longitudinal axis (rotation axis) of the round shank chisel is inclined relative to the surface to be machined.
  • bit holder can be fixed in two or more mounting positions on the base part, and that the central longitudinal axis of the bit is inclined at different working angles in the different mounting positions.
  • the bit holder is supported by a support surface on a contact surface of the base part, and that the bit holder for realizing the different mounting positions on its support surface relative to the contact surface is displaceable.
  • the bit holder is rastered relative to the base part adjustable.
  • the individual grid points certain, preferably used working angle are assigned. In a road milling machine these are for example the angles 35 °, 40 ° and 45 °.
  • the rastered adjustment can be realized, for example, that the bit holder is provided with a toothing, which is in engagement with a counter toothing of the base part, that the toothing and the counter tooth surface support flanks extending transversely to the adjustment direction of the bit holder relative to the base part.
  • the forces occurring during operation can be safely dissipated into the base part via the supporting flanks.
  • an inventive chisel holder change system is characterized in that the counter toothing of the base part has two partial teeth, and that the Operastattept are inclined transversely to the feed direction of the bit for receiving transverse forces ,
  • a chisel holder change system for example, that the base part has a contact part, which is equipped with a plurality of concentrically arranged tooth elements of the counter teeth, that the bit holder carries a clamping plate, which is provided with a trained on the counter toothing teeth, and that the bit holder relative to the base part is rotatable about an adjustment axis which is arranged transversely to the feed direction of the bit.
  • a connection mechanism can also be designed as a Hirth toothing. Due to the large number of tooth elements, extremely high forces can be transmitted via this connection mechanism.
  • the bit holder has a base body which carries a retaining lug for receiving the chisel in that the base body has an oblong hole which is arranged in alignment with a threaded receptacle of the base part such that a fastening screw can be inserted into the slot and can be screwed into the threaded receptacle, and that the bit holder can be adjusted when the fastening screw is loosened.
  • the screw head of the fastening screw should in this case be accommodated protected in a recess which expands following the slot.
  • a particularly good and firm clamping of the screw head with the bit holder can then be achieved if the screw head is designed as a lens screw head.
  • bit holder In Vedel fashionfall or inadmissible high stresses, it may happen that a bit holder takes damage.
  • the bit holder on a base body carries a retaining lug, that the retaining lug has a receiving bore for a chisel shank of the bit, and that the retaining lug with the body about a predetermined breaking point is connected.
  • FIG. 1 shows a bit holder changing system which has a base part 40 and a bit holder 20.
  • the base part 40 has a lower connecting surface 41, with which it can be placed on a cylindrical base body, for example a road milling machine. The connection with the cylindrical base body by means of welds.
  • the base part 40 On its upwardly facing side, the base part 40 is provided with an arcuate contact surface.
  • the contact surface On its upwardly facing side, the base part 40 is provided with an arcuate contact surface.
  • the contact surface has a counter teeth 42.
  • the individual teeth of this counter toothing 42 are, as shown in FIG. 1 A reveals, triangular in cross-section and thus form two contact edges.
  • the teeth of the counter toothing 42 extend over the entire width of the base part 40. On half the width of the teeth, a threaded receptacle 43 is incorporated into the contact surface of the base part 40.
  • the threaded receptacle is arranged so that it is incorporated as far as possible in the base part and thus provides a sufficient thread length for a mounting screw.
  • the threaded receptacle 43 is therefore obliquely introduced into the contact surface.
  • a small overall height of the base part 40 can be realized. This has particular advantages since, therefore, the entire structure of the bit holder changing system can be kept small.
  • the bit holder 20 has a base body 25, which is provided with a slot 28.
  • the slot 28 widens to the outside of the main body 25 out by means of a recess 27.
  • the fastening screw which in the present case, the connection mechanism 30 represented inserted and screwed into the threaded receptacle 43.
  • the screw head 32 is then housed protected in the recess 27.
  • a serration 26 of the main body 25 can be held in firm engagement with the counter teeth 42. Due to the large number of meshing teeth, a large interface is created, over which the bit holder 20 can be pressed against the base part 40 and over which large forces can be transmitted during operation.
  • the main body 25 has a protruding holding lug 21, in which a receiving bore 22 is incorporated.
  • the central longitudinal axis of the receiving bore 27 is perpendicular to the arcuate contact surface of the base member 40.
  • a Austreibkanal 23 is drilled in the bit holder 20.
  • the Austreibkanal 23 crosses the receiving bore 22.
  • a chisel 10 can be used.
  • the chisel 10 has a chisel head 17 which carries a chisel tip 11.
  • the chisel tip 11 is formed as a hard metal element.
  • the chisel head 17 is followed by a chisel shaft, onto which a clamping sleeve 12 is mounted.
  • the clamping sleeve 12 is braced in the receiving bore 22.
  • the clamping sleeve 12 holds the chisel shaft of the chisel 10 and thus prevents it from falling out.
  • the chisel head 17 rests on a wear protection disk 14.
  • the wear protection disk 14 is supported on the tool holder 20 around the receiving bore 22.
  • the extraction of the bit 10 from the receiving bore 22 can be done in two different ways.
  • a Austreibdorn be introduced through an inlet opening 24 in the expulsion channel 23 until it comes to rest on an end face 13 of the drill collar. Subsequently, the chisel shaft can be driven out of the receiving bore 22 with a hammer blow. Furthermore, in the chisel head 17, a circumferential Ausziehnut 15 is introduced into which an extraction tool can be used. By means of a lever then the bit 10 can be levered out of the receiving bore 22.
  • FIGS. 1A and 1B show that the fastening screw is arranged centrally in the slot 28. This results in a working angle ⁇ under which the central longitudinal axis 16 of the bit 10 is employed with respect to the surface to be machined.
  • the complementary angle is shown in FIG. 1A with ⁇ '.
  • the fastening screw is tightened again, so that the teeth 26 can clamp with the counter teeth 42.
  • Such changed setting position is shown in Figs. 2A and 2B.
  • the working angle ⁇ is now 45 ° (compared to the previous setting of 40 °). In the setting position according to FIGS. 2A and 2B, the fastening screw and the screw head 32 abut against one end of the oblong hole 28 or the recess 27.
  • the other maximum working angle ⁇ is illustrated in Figs. 3A and 3B.
  • the fastening screw and the screw head 32 abuts against the other end of the oblong hole 28 or the recess 27.
  • an operating angle ⁇ of 35 ° is realized. It can be seen that regardless of the setting position of the bit holder 20, the central longitudinal axis 16 of the bit 10 is always arranged normal to the contact surface of the base part 40. As a result, an optimal derivation of the forces resulting in labor input is possible.
  • a cylindrical geometry has been selected for the screw head 32 of the fastening screw.
  • a Linsenkopfgeometrie can be selected.
  • a possible embodiment of a base part 40 is shown in a perspective view.
  • the two partial teeth 42.1 and 42.2 are inclined in the direction transverse to the feed direction of the round shank chisel 10. This forms in the transition region between the two partial teeth 42.1, 42.2 a ratchet-shaped edge 42.3.
  • this embodiment of the counter teeth 42 and the teeth 26 of the bit holder 20 is executed. As a result of this configuration, the forces acting transversely to the feed direction of the bit can be positively transferred via the teeth 26 and the counter teeth 42 in the base part 40.
  • a further embodiment variant of a chisel holder change system is shown.
  • the base part 40 is placed with its connecting surface 41 on the surface of a roller body 50.
  • the base part 40 has a contact part 44.
  • This contact part 44 is provided with a star-shaped counter toothing 42.
  • the individual teeth of the counter teeth 42 are directed radially outwards starting from a common center.
  • the central longitudinal axis of the fastening screw is arranged, of which in Fig. 5, the screw head 32 can be seen.
  • a clamping plate 25.1 of the main body 25 of the bit holder 20 are placed on the contact part 44.
  • the clamping plate 2.5 is provided with a toothing 26 which is adapted to the counter toothing 42 of the base part 40.
  • the serration shown in FIG. 5 is commonly referred to as Hirth serration.
  • the bit holder 20 can be staggered in a stepwise manner corresponding to the tooth pitch with respect to the base member 40. This also changes the working angle ⁇ of the bit 10.
  • the working angle ⁇ can be changed quickly and easily.
  • the removal tool for example a road milling machine
  • the removal tool can be easily adapted to different applications. If, for example, a large working angle ⁇ is selected, a fine surface roughness can be produced in road milling.
  • small working angles ⁇ lead to a large overburden volume combined with a large roughness depth.

Abstract

A chisel-holder changing system for a road milling machine, a coal cutting machine or the like to which a chisel-holder is fastened in an exchangeable manner by means of a connecting mechanism. The chisel-holder accommodates at least one chisel that can be exchanged. The middle longitudinal axis of the chisel is set at an operating angle of less than 90° with respect to the surface to be worked. In order to be able to obtain varied removal results using such a chisel-holder changing system, the chisel-holder can be fixed in two or more configuring positions to the base part and in different attachment positions of the chisel, the middle longitudinal axis of the chisel is slanted at various working angles.

Description

Die Erfindung betrifft ein Meißelhalterwechselsystem für eine Straßenfräse, eine Schrämmaschine oder dergleichen mit einem Basisteil, an dem ein Meißelhalter mittels einer Verbindungsmechanik auswechselbar befestigt ist, wobei der Meißelhalter wenigstens einen Meißel auswechselbar aufnimmt, wobei die Mittellängsachse des Meißels gegenüber der zu bearbeitenden Oberfläche im Arbeitswinkel kleiner als 90° angestellt ist.The invention relates to a chisel holder exchange system for a road milling machine, a cutting machine or the like with a base to which a chisel holder is interchangeably attached by means of a connecting mechanism, wherein the chisel holder interchangeably receives at least one chisel, wherein the central longitudinal axis of the chisel with respect to the surface to be machined at working angle smaller is employed as 90 °.

Ein solches Meißelhalterwechselsystem ist aus der DE 43 22 401 C2 bekannt. Das Meißelhalterwechselsystem weist ein Basisteil auf, das abstehend auf einer Oberfläche eines Walzenkörpes aufgeschweißt. Das Basisteil besitzt eine Steckaufnahme in die ein Steckeinsatz des Meißelhalters einsetzbar ist. Der Meißelhalter ist mit einer Aufnahmebohrung versehen, in die ein Meißelschaft eines Rundschaftmeißels eingesetzt ist. Der Meißelhalter kann mit dem Basisteil mittels einer Befestigungsschraube verspannt werden. Im montierten Zustand ist die Mittellängsachse (Rotationsachse) des Rundschaftmeißels gegenüber der zu bearbeitenden Oberfläche geneigt.Such a tool holder change system is known from DE 43 22 401 C2. The chisel holder exchange system has a base part which is welded on a surface of a Walzenkörpes projecting. The base part has a plug-in receptacle into which a plug-in insert of the bit holder can be inserted. The chisel holder is provided with a receiving bore into which a chisel shank of a round shank chisel is inserted. The bit holder can be clamped to the base part by means of a fastening screw. In the mounted state, the central longitudinal axis (rotation axis) of the round shank chisel is inclined relative to the surface to be machined.

Es ist Aufgabe der Erfindung ein Meißelhalterwechselsystem der eingangs erwähnten Art zu schaffen, mit dem sich unterschiedliche Abtragergebnisse hinsichtlich der Oberflächenqualität der bearbeiteten Oberfläche ergeben.It is an object of the invention to provide a chisel holder change system of the type mentioned above, with the result of different Abtragergebnisse in terms of surface quality of the machined surface.

Diese Aufgabe wird dadurch gelöst, daß der Meißelhalter in zwei oder mehreren Anbaupositionen an dem Basisteil festlegbar ist, und daß die Mittellängsachse des Meißels in den verschiedenen Anbaupositionen um unterschiedliche Arbeitswinkel geneigt ist.This object is achieved in that the bit holder can be fixed in two or more mounting positions on the base part, and that the central longitudinal axis of the bit is inclined at different working angles in the different mounting positions.

Infolge der unterschiedlichen Anstellungen des Meißels lassen sich mit einem einzigen Meißelhalterwechselsystem unterschiedliche Abtragergebnisse realisieren. Beispielsweise kann bei einer Straßenfräse durch die Variation des Arbeitswinkles entweder ein Grob- oder Feinfräsen erfolgen.Due to the different positions of the bit can be realized with a single chisel holder changing system different Abtragergebnisse. For example, in a road milling machine by the variation of the working angle either a coarse or fine milling done.

Nach einer bevorzugten Ausgestaltungsvariante der Erfindung ist es vorgesehen, daß der Meißelhalter mittels einer Stützfläche an einer Anlagefläche des Basisteils abgestützt ist, und daß der Meißelhalter zur Verwirklichung der unterschiedlichen Anbaupositionen an seiner Stützfläche gegenüber der Anlagefläche versetzbar ist.According to a preferred embodiment variant of the invention, it is provided that the bit holder is supported by a support surface on a contact surface of the base part, and that the bit holder for realizing the different mounting positions on its support surface relative to the contact surface is displaceable.

Um einen schnellen Wechsel der Meißelpositionierung erreichen zu können, ist es denkbar, daß der Meißelhalter gegenüber dem Basisteil gerastert verstellbar ist. Insbesondere kann es dabei vorgesehen sein, daß den einzelnen Rasterpunkten bestimmte, bevorzugt eingesetzte Arbeitswinkel zugeordnet sind. Bei einer Straßenfräse sind dies beispielsweise die Winkel 35°, 40° und 45°.In order to achieve a quick change of the bit positioning, it is conceivable that the bit holder is rastered relative to the base part adjustable. In particular, it may be provided that the individual grid points certain, preferably used working angle are assigned. In a road milling machine these are for example the angles 35 °, 40 ° and 45 °.

Die gerasterte Verstellung läßt sich beispielsweise dadurch verwirklichen, daß der Meißelhalter mit einer Zahnung versehen ist, die in Eingriff mit einer Gegenzahnung des Basisteils steht, daß die Zahnung und die Gegenzahnung flächige Stützflanken aufweisen, die sich quer zur Verstellrichtung des Meißelhalters gegenüber dem Basisteil erstrecken. Über die Stützflanken können die im Arbeitsbetrieb auftretenden Kräfte sicher in das Basisteil abgeleitet werden.The rastered adjustment can be realized, for example, that the bit holder is provided with a toothing, which is in engagement with a counter toothing of the base part, that the toothing and the counter tooth surface support flanks extending transversely to the adjustment direction of the bit holder relative to the base part. The forces occurring during operation can be safely dissipated into the base part via the supporting flanks.

Üblicherweise ist das Meißelhalterwechselsystem auf einem walzenförmigen Grundkörper aufgebracht, der sich um eine Rotationsachse bewegen läßt. Damit auch die, in Richtung der Rotationsachse wirkenden Kräfte im Arbeitseinsatz sicher aufgenommen werden kann, ist ein erfindungsgemäßes Meißelhalterwechselsystem dadurch gekennzeichnet, daß die Gegenzahnung des Basisteils zwei Teilzahnungen aufweist, und daß die Teilzahnungen zur Aufnahme von Querkräften in Richtung quer zur Vorschubrichtung des Meißels geneigt sind.Usually, the bit holder changing system is applied to a cylindrical base body which can be moved about an axis of rotation. Thus, the forces acting in the direction of the rotation axis forces can be safely absorbed in work, an inventive chisel holder change system is characterized in that the counter toothing of the base part has two partial teeth, and that the Teilzahnungen are inclined transversely to the feed direction of the bit for receiving transverse forces ,

Eine alternative Ausgestaltungsvariante eines Meißelhalterwechselsystems läßt sich beispielsweise dadurch verwirklichen, daß das Basisteil ein Anlageteil aufweist, das mit einer Vielzahl konzentrisch angeordneter Zahnelemente der Gegenzahnung ausgestattet ist, daß der Meißelhalter eine Spannplatte trägt, die mit einer auf die Gegenzahnung angepaßt ausgebildeten Zahnung versehen ist, und daß der Meißelhalter gegenüber dem Basisteil um eine Verstellachse verdrehbar ist, die quer zur Vorschubrichtung des Meißels angeordnet ist. Eine solche Verbindungsmechanik kann auch als Hirth-Verzahnung ausgebildet sein. Aufgrund der Vielzahl der Zahnelemente lassen sich über diese Verbindungsmechanik extrem hohe Kräfte übertragen.An alternative embodiment variant of a chisel holder change system can be realized, for example, that the base part has a contact part, which is equipped with a plurality of concentrically arranged tooth elements of the counter teeth, that the bit holder carries a clamping plate, which is provided with a trained on the counter toothing teeth, and that the bit holder relative to the base part is rotatable about an adjustment axis which is arranged transversely to the feed direction of the bit. Such a connection mechanism can also be designed as a Hirth toothing. Due to the large number of tooth elements, extremely high forces can be transmitted via this connection mechanism.

Um eine feste Verbindung des Meißelhalters mit dem Basisteil zu schaffen, die gleichzeitig aber auch einen einfachen und schnellen Wechsel des Arbeitswinkels zuläßt, kann es nach einer Ausgestaltung der Erfindung vorgesehen sein, daß der Meißelhalter einen Grundkörper aufweist, der einen Halteansatz zur Aufnahme des Meißels trägt, daß der Grundkörper ein Langloch aufweist, das fluchtend zu einer Gewindeaufnahme des Basisteils angeordnet ist, daß in das Langloch eine Befestigungsschraube einführbar und in die Gewindeaufnahme einschraubbar ist, und daß der Meißelhalter bei gelöster Befestigungsschraube verstellbar ist.In order to provide a firm connection of the chisel holder with the base part, but at the same time also allows a simple and quick change of working angle, it may be provided according to an embodiment of the invention that the bit holder has a base body which carries a retaining lug for receiving the chisel in that the base body has an oblong hole which is arranged in alignment with a threaded receptacle of the base part such that a fastening screw can be inserted into the slot and can be screwed into the threaded receptacle, and that the bit holder can be adjusted when the fastening screw is loosened.

Der Schraubenkopf der Befestigungsschraube sollte hierbei in einer Ausnehmung geschützt untergebracht sein, die sich im Anschluß an das Langloch erweitert.The screw head of the fastening screw should in this case be accommodated protected in a recess which expands following the slot.

Eine besonders gute und feste Verspannung des Schraubenkopfes mit dem Meißelhalter läßt sich dann erreichen, wenn der Schraubenkopf als Linsenschraubenkopf ausgebildet ist.A particularly good and firm clamping of the screw head with the bit holder can then be achieved if the screw head is designed as a lens screw head.

Im Veschleißfall oder bei unzulässig hohen Beanspruchungen kann es vorkommen, daß ein Meißelhalter Schaden nimmt. Um zu verhindern, daß der Meißelhalter dabei unkontrolliert abbricht und beispielsweise das Basisteil beschädigt kann es vorgesehen sein, daß der Meißelhalter an einem Grundkörper einen Halteansatz trägt, daß der Halteansatz eine Aufnahmebohrung für einen Meißelschaft des Meißels aufweist, und daß der Halteansatz mit dem Grundkörper über eine Sollbruchstelle verbunden ist.In Vedeleißfall or inadmissible high stresses, it may happen that a bit holder takes damage. In order to prevent the bit holder uncontrollably breaks off and, for example, the base part damaged, it may be provided that the bit holder on a base body carries a retaining lug, that the retaining lug has a receiving bore for a chisel shank of the bit, and that the retaining lug with the body about a predetermined breaking point is connected.

Die Erfindung wird im folgenden anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

Fig. 1 A und 1B
ein Meißelhalterwechselsystem in zwei Ansichten und in einer ersten Einstellposition,
Fig. 2A und 2B
das Meißelhalterwechselsystem gemäß den Fig. 1A und 1B in einer zweiten Einstellposition,
Fig. 3A und 3B
das Meißelhalterwechselsystem gemäß den Fig. 1A und 1B in einer dritten Einstellposition,
Fig. 4
eine Ausgestaltungsvariante eines Basisteiles für ein Meißelhalterwechselsystem in perspektivischer Ansicht und
Fig. 5
in Seitendarstellung eine weitere Ausgestaltungsvariante eines Meißelhalterwechselsystems.
The invention is explained below with reference to exemplary embodiments illustrated in the drawings. Show it:
Fig. 1 A and 1B
a chisel holder change system in two views and in a first setting position,
FIGS. 2A and 2B
the bit holder changing system according to FIGS. 1A and 1B in a second setting position,
FIGS. 3A and 3B
the bit holder changing system according to FIGS. 1A and 1B in a third setting position,
Fig. 4
a design variant of a base part for a chisel holder change system in perspective view and
Fig. 5
in side view another variant of a chisel holder change system.

In der Fig. 1 ist ein Meißelhalterwechselsystem dargestellt, das ein Basisteil 40 und einen Meißelhalter 20 aufweist. Das Basisteil 40 weist eine untere Verbindungsfläche 41 auf, mit der es auf einen walzenförmigen Grundkörper, beispielsweise einer Straßenfräse, aufgesetzt werden kann. Die Verbindung mit dem walzenförmigen Grundkörper erfolgt mittels Schweißnähten. An seiner nach oben gewandten Seite ist das Basisteil 40 mit einer bogenförmigen Anlagefläche versehen. Die Anlagefläche weist eine Gegenzahnung 42 auf. Die einzelnen Zähne dieser Gegenzahnung 42 sind, wie dies die Fig. 1 A erkennen läßt, im Querschnitt dreiecksförmig ausgebildet und bilden somit zwei Anlageflanken. Die Zähne der Gegenzahnung 42 erstrecken sich über die gesamte Breite des Basisteils 40. Auf der Hälfte der Breite der Zähne ist eine Gewindeaufnahme 43 in die Anlagefläche des Basisteils 40 eingearbeitet. Die Gewindeaufnahme ist dabei so angeordnet, daß sie zum einen möglichst raumgreifend in das Basisteil eingearbeitet ist und dadurch eine ausreichende Gewindelänge für eine Befestigungsschraube bereitstellt. Wie die Fig. 1 A erkennen läßt, ist die Gewindeaufnahme 43 daher schräg in die Anlagefläche eingebracht. Infolge dieser platzsparenden Anordnung kann auch eine geringe Bauhöhe des Basisteils 40 verwirklicht werden. Dies hat besondere Vorteile, da daher der gesamte Aufbau des Meißelhalterwechselsystems klein gehalten werden kann.FIG. 1 shows a bit holder changing system which has a base part 40 and a bit holder 20. The base part 40 has a lower connecting surface 41, with which it can be placed on a cylindrical base body, for example a road milling machine. The connection with the cylindrical base body by means of welds. On its upwardly facing side, the base part 40 is provided with an arcuate contact surface. The contact surface has a counter teeth 42. The individual teeth of this counter toothing 42 are, as shown in FIG. 1 A reveals, triangular in cross-section and thus form two contact edges. The teeth of the counter toothing 42 extend over the entire width of the base part 40. On half the width of the teeth, a threaded receptacle 43 is incorporated into the contact surface of the base part 40. The threaded receptacle is arranged so that it is incorporated as far as possible in the base part and thus provides a sufficient thread length for a mounting screw. As can be seen Fig. 1 A, the threaded receptacle 43 is therefore obliquely introduced into the contact surface. As a result of this space-saving arrangement, a small overall height of the base part 40 can be realized. This has particular advantages since, therefore, the entire structure of the bit holder changing system can be kept small.

An dem Basisteil 40 kann der Meißelhalter 20 angebaut werden. Der Meißelhalter 20 weist einen Grundkörper 25 auf, der mit einem Langloch 28 versehen ist. Das Langloch 28 erweitert sich zur Außenseite des Grundkörpers 25 hin mittels einer Ausnehmung 27. Durch das Langloch 28 kann die Befestigungsschraube, die vorliegend die Verbindungsmechanik 30 repräsentiert hindurchgesteckt und in die Gewindeaufnahme 43 hineingeschraubt werden. Dabei ist dann der Schraubenkopf 32 in der Ausnehmung 27 geschützt untergebracht. Bei angezogener Befestigungsschraube wird der Schraubenkopf 32 im Übergangsbereich zwischen Langloch 28 und Ausnehmung 27 an den Meißelhalter 20 angepreßt. Hierdurch kann eine Zahnung 26 des Grundkörpers 25 in festem Eingriff mit der Gegenzahnung 42 gehalten werden. Aufgrund der Vielzahl der in Eingriff stehenden Zähne wird eine große Verbindungsfläche geschaffen, über die der Meißelhalter 20 an das Basisteil 40 angepreßt werden kann und über die im Arbeitseinsatz große Kräfte übertragbar sind.On the base part 40 of the bit holder 20 can be grown. The bit holder 20 has a base body 25, which is provided with a slot 28. The slot 28 widens to the outside of the main body 25 out by means of a recess 27. Through the slot 28, the fastening screw, which in the present case, the connection mechanism 30 represented inserted and screwed into the threaded receptacle 43. In this case, the screw head 32 is then housed protected in the recess 27. When tightening the screw head 32 is pressed in the transition region between slot 28 and recess 27 to the bit holder 20. hereby a serration 26 of the main body 25 can be held in firm engagement with the counter teeth 42. Due to the large number of meshing teeth, a large interface is created, over which the bit holder 20 can be pressed against the base part 40 and over which large forces can be transmitted during operation.

Der Grundkörper 25 weist einen abstehenden Halteansatz 21 auf, in den eine Aufnahmebohrung 22 eingearbeitet ist. Die Mittellängsachse der Aufnahmebohrung 27 steht dabei rechtwinklig zu der bogenförmigen Anlagefläche des Basisteils 40. Von der Rückseite des Meißelhatterwechselsystems ist ein Austreibkanal 23 in dem Meißelhalter 20 eingebohrt. Der Austreibkanal 23 kreuzt die Aufnahmebohrung 22. In die Aufnahmebohrung 22 kann ein Meißel 10 eingesetzt werden. Der Meißel 10 weist einen Meißelkopf 17 auf, der eine Meißelspitze 11 trägt. Die Meißelspitze 11 ist als Hartmetallelement ausgebildet. An den Meißelkopf 17 schließt sich ein Meißelschaft an, auf den eine Spannhülse 12 aufgezogen ist. Die Spannhülse 12 ist in der Aufnahmebohrung 22 verspreizt. Gleichzeitig hält die Spannhülse 12 den Meißelschaft des Meißels 10 und verhindert so sein Herausfallen. Im eingesetzten Zustand liegt der Meißelkopf 17 auf einer Verschleißschutzscheibe 14 auf. Die Verschleißschutzscheibe 14 stützt sich um die Aufnahmebohrung 22 herum an dem Meißelhalter 20 ab. Das Ausziehen des Meißels 10 aus der Aufnahmebohrung 22 kann auf zwei verschiedene Arten erfolgen. Zum einen kann ein Austreibdorn durch eine Eintrittsöffnung 24 in den Austreibkanal 23 eingeführt werden, bis dieser an einer Stirnfläche 13 des Meißelschafts zum Liegen kommt. Anschließend kann mit einem Hammerschlag der Meißelschaft aus der Aufnahmebohrung 22 ausgetrieben werden. Weiterhin ist in den Meißelkopf 17 eine umlaufende Ausziehnut 15 eingebracht, in die ein Ausziehwerkzeug eingesetzt werden kann. Mittels eines Hebels kann dann der Meißel 10 aus der Aufnahmebohrung 22 ausgehebelt werden.The main body 25 has a protruding holding lug 21, in which a receiving bore 22 is incorporated. The central longitudinal axis of the receiving bore 27 is perpendicular to the arcuate contact surface of the base member 40. From the back of the chisel change system a Austreibkanal 23 is drilled in the bit holder 20. The Austreibkanal 23 crosses the receiving bore 22. In the receiving bore 22, a chisel 10 can be used. The chisel 10 has a chisel head 17 which carries a chisel tip 11. The chisel tip 11 is formed as a hard metal element. The chisel head 17 is followed by a chisel shaft, onto which a clamping sleeve 12 is mounted. The clamping sleeve 12 is braced in the receiving bore 22. At the same time, the clamping sleeve 12 holds the chisel shaft of the chisel 10 and thus prevents it from falling out. When inserted, the chisel head 17 rests on a wear protection disk 14. The wear protection disk 14 is supported on the tool holder 20 around the receiving bore 22. The extraction of the bit 10 from the receiving bore 22 can be done in two different ways. On the one hand, a Austreibdorn be introduced through an inlet opening 24 in the expulsion channel 23 until it comes to rest on an end face 13 of the drill collar. Subsequently, the chisel shaft can be driven out of the receiving bore 22 with a hammer blow. Furthermore, in the chisel head 17, a circumferential Ausziehnut 15 is introduced into which an extraction tool can be used. By means of a lever then the bit 10 can be levered out of the receiving bore 22.

Die Fig. 1 A und 1B lassen erkennen, daß die Befestigungsschraube mittig im Langloch 28 angeordnet ist. Hierbei ergibt sich ein Arbeitswinkel α unter dem die Mittellängsachse 16 des Meißels 10 gegenüber der zu bearbeitenden Oberfläche angestellt ist. Der Komplementärwinkel ist in der Fig. 1 A mit α' dargestellt. Wenn nun dieser Arbeitswinkel α verändert werden soll, so muß lediglich die Befestigungsschraube gelöst werden. Dann kann der Meißelhalter 20 gegenüber dem Basisteil 40 versetzt werden. Anschließend wird die Befestigungsschraube wieder angezogen, so daß sich die Zahnung 26 mit der Gegenzahnung 42 verspannen kann. In den Fig. 2A und 2B ist eine solche veränderte Einstellposition gezeigt. Dabei beträgt der Arbeitswinkel α nunmehr 45° (gegenüber der vorherigen Einstellung von 40°). In der Einstellposition gemäß den Fig. 2A und 2B schlägt die Befestigungsschraube und der Schraubenkopf 32 an dem einen Ende des Langloches 28 bzw. der Ausnehmung 27 an.FIGS. 1A and 1B show that the fastening screw is arranged centrally in the slot 28. This results in a working angle α under which the central longitudinal axis 16 of the bit 10 is employed with respect to the surface to be machined. The complementary angle is shown in FIG. 1A with α '. Now, if this working angle α is to be changed, so only the fixing screw must be solved. Then the bit holder 20 can be offset from the base part 40. Subsequently, the fastening screw is tightened again, so that the teeth 26 can clamp with the counter teeth 42. Such changed setting position is shown in Figs. 2A and 2B. The working angle α is now 45 ° (compared to the previous setting of 40 °). In the setting position according to FIGS. 2A and 2B, the fastening screw and the screw head 32 abut against one end of the oblong hole 28 or the recess 27.

Der andere maximale Arbeitswinkel α ist in den Fig. 3A und 3B veranschaulicht. Hierbei schlägt die Befestigungsschraube und der Schraubenkopf 32 an dem anderen Ende des Langloches 28 bzw. der Ausnehmung 27 an. In den Fig. 3A und 3B ist ein Arbeitswinkel α von 35° verwirklicht. Es ist erkennbar, daß unabhängig von der Einstellposition des Meißelhalters 20 die Mittellängsachse 16 des Meißels 10 stets normal zu der Anlagefläche des Basisteils 40 angeordnet ist. Hierdurch wird eine optimale Ableitung der im Arbeitseinsatz entstehenden Kräfte möglich.The other maximum working angle α is illustrated in Figs. 3A and 3B. In this case, the fastening screw and the screw head 32 abuts against the other end of the oblong hole 28 or the recess 27. In Figs. 3A and 3B, an operating angle α of 35 ° is realized. It can be seen that regardless of the setting position of the bit holder 20, the central longitudinal axis 16 of the bit 10 is always arranged normal to the contact surface of the base part 40. As a result, an optimal derivation of the forces resulting in labor input is possible.

In dem in den Fig. 1A bis 3B dargestellten Ausführungsbeispiels wurde für den Schraubenkopf 32 der Befestigungsschraube eine zylindrische Geometrie gewählt. Zur Verbesserung des Anpressdruckes kann auch eine Linsenkopfgeometrie gewählt werden.In the embodiment shown in FIGS. 1A to 3B, a cylindrical geometry has been selected for the screw head 32 of the fastening screw. To improve the contact pressure and a Linsenkopfgeometrie can be selected.

In der Fig. 4 ist eine mögliche Ausgestaltung eines Basisteils 40 in perspektivischer Darstellung gezeigt. Wie diese Zeichnung erkennen läßt, ist die Gegenzahnung 42 in zwei Teilzahnungen 42.1 und 42.2 unterteilt. Die beiden Teilzahnungen 42.1 und 42.2 sind in Richtung quer zur Vorschubrichtung des Rundschaftmeißels 10 geneigt. Damit bildet sich im Übergangsbereich zwischen den beiden Teilzahnungen 42.1, 42.2 eine zahnleistenförmige Kante 42.3. Entsprechend dieser Ausbildung der Gegenzahnung 42 ist auch die Zahnung 26 des Meißelhalters 20 ausgeführt. Infolge dieser Ausgestaltung lassen sich die Kräfte, die quer zur Vorschubrichtung des Meißels wirken, formschlüssig über die Zahnung 26 und die Gegenzahnung 42 in das Basisteil 40 übertragen.4, a possible embodiment of a base part 40 is shown in a perspective view. As this drawing shows, is the Gegenzahnung 42 divided into two Teilzahnungen 42.1 and 42.2. The two partial teeth 42.1 and 42.2 are inclined in the direction transverse to the feed direction of the round shank chisel 10. This forms in the transition region between the two partial teeth 42.1, 42.2 a ratchet-shaped edge 42.3. According to this embodiment of the counter teeth 42 and the teeth 26 of the bit holder 20 is executed. As a result of this configuration, the forces acting transversely to the feed direction of the bit can be positively transferred via the teeth 26 and the counter teeth 42 in the base part 40.

In der Fig. 5 ist eine weitere Ausgestaltungsvariante eines Meißelhalterwechselsystems gezeigt. Wie diese Darstellung erkennen läßt, ist das Basisteil 40 mit seiner Verbindungsfläche 41 auf die Oberfläche eines Walzenkörpers 50 aufgesetzt. Das Basisteil 40 besitzt ein Anlageteil 44. Dieses Anlageteil 44 ist mit einer sternförmig ausgebildeten Gegenzahnung 42 versehen. Dabei sind die einzelnen Zähne der Gegenzahnung 42 ausgehend von einem gemeinsamen Zentrum radial nach außen gerichtet. In diesem Zentrum ist auch die Mittellängsachse der Befestigungsschraube angeordnet, von der in Fig. 5 der Schraubenkopf 32 erkennbar ist. Auf das Anlageteil 44 kann eine Spannplatte 25.1 des Grundkörpers 25 des Meißelhalters 20 aufgesetzt werden. Die Spannplatte 2.5 ist mit einer Zahnung 26 versehen, die auf die Gegenzahnung 42 des Basisteils 40 angepaßt ausgebildet ist. Die in der Fig. 5 dargestellte Zahnungsverbindung wird üblicherweise als Hirth-Verzahnung bezeichnet. Die Verspannung der Zahnung 26 mit der Gegenzahnung 42 erfolgt mittels der Befestigungsschraube. Wenn die Befestigungsschraube gelöst ist, kann der Meißelhalter 20 stufenweise, entsprechend der Zahnungsteilung gegenüber dem Basisteil 40 versetzt werden. Damit ändert sich auch der Arbeitswinkel α des Meißels 10.5, a further embodiment variant of a chisel holder change system is shown. As can be seen from this illustration, the base part 40 is placed with its connecting surface 41 on the surface of a roller body 50. The base part 40 has a contact part 44. This contact part 44 is provided with a star-shaped counter toothing 42. In this case, the individual teeth of the counter teeth 42 are directed radially outwards starting from a common center. In this center, the central longitudinal axis of the fastening screw is arranged, of which in Fig. 5, the screw head 32 can be seen. On the contact part 44, a clamping plate 25.1 of the main body 25 of the bit holder 20 are placed. The clamping plate 2.5 is provided with a toothing 26 which is adapted to the counter toothing 42 of the base part 40. The serration shown in FIG. 5 is commonly referred to as Hirth serration. The bracing of the toothing 26 with the counter toothing 42 by means of the fastening screw. When the fastening screw is loosened, the bit holder 20 can be staggered in a stepwise manner corresponding to the tooth pitch with respect to the base member 40. This also changes the working angle α of the bit 10.

Mit den in den Zeichnungen dargestellten Meißelhalterwechselsystemen läßt sich der Arbeitswinkel α schnell und ohne großen Aufwand umstellen. Dementsprechend läßt sich das Abtragswerkzeug, beispielsweise eine Straßenfräse, auf unterschiedliche Anwendungsfälle einfach anpassen. Wird beispielsweise ein großer Arbeitswinkel α gewählt, so läßt sich bei Straßenfräsen eine feine Oberflächenrauhigkeit erzeugen. Kleine Arbeitswinkel α hingegen führen zu einem großen Abraumvolumen bei gleichzeitig großer Rauhtiefe.With the chisel holder change systems shown in the drawings, the working angle α can be changed quickly and easily. Accordingly For example, the removal tool, for example a road milling machine, can be easily adapted to different applications. If, for example, a large working angle α is selected, a fine surface roughness can be produced in road milling. On the other hand, small working angles α lead to a large overburden volume combined with a large roughness depth.

Claims (10)

  1. Chisel holder changing system for a road milling machine, coal cutting machine or the like, having a base part on which a chisel holder is interchangeably fastened by means of a connecting mechanism, the chisel holder interchangeably accommodating at least one chisel, and the centre longitudinal axis of the chisel being set at a working angle of less than 90° relative to the surface to be worked, characterized in that the chisel is designed as a round shank chisel having a chisel head and a chisel shank, the chisel shank being inserted in a hole receptacle of the chisel holder (20), in that the rotation axis formed by the chisel shank is set at the working angle, in that the chisel holder (20) can be secured to the base part (40) in two or more attached positions, and in that the centre longitudinal axis (16) of the chisel (10) is inclined by different working angles (α) in the various attached positions.
  2. Chisel holder changing system according to Claim 1, characterized in that the chisel holder (20) is supported on a bearing surface of the base part (40) by means of a supporting surface, and in that the chisel holder (20) can be displaced at its supporting surface relative to the bearing surface in order to realize the different attached positions.
  3. Chisel holder changing system according to Claim 1 or 2, characterized in that the chisel holder (20) can be adjusted in an indexed manner relative to the base part (40).
  4. Chisel holder changing system according to one of Claims 1 to 3, characterized in that the chisel holder (20) is provided with a tooth system (26) which is in engagement with a mating tooth system (42) of the base part (40), in that the tooth system (26) and the mating tooth system (42) have planar supporting flanks which extend transversely to the adjusting direction of the chisel holder (20) relative to the base part (40).
  5. Chisel holder changing system according to Claim 4, characterized in that the mating tooth system (42) of the base part (40) has two sectional tooth systems (42.1, 42.2), and in that the sectional tooth systems (42.1, 42.2), for absorbing transverse forces, are inclined transversely to the feed direction of the chisel (10).
  6. Chisel holder changing system according to Claim 4, characterized in that the base part (40) has a bearing part (44) which is provided with a multiplicity of concentrically arranged tooth elements of the mating tooth system (42), in that the chisel holder (20) carries a clamping plate (25) which is provided with a tooth system (26) designed so as to be adapted to the mating tooth system (42), and in that the chisel holder (20) can be rotated relative to the base part (40) about an adjusting axis which is arranged transversely to the feed direction of the chisel (10).
  7. Chisel holder changing system according to one of Claims 1 to 6, characterized in that the chisel holder (20) has a parent body (25) which has a holding extension (21) for accommodating the chisel (10), in that the parent body (25) has an elongated hole (28) which is arranged in alignment with a threaded receptacle (43) of the base part (20), in that a fastening screw can be inserted into the elongated hole (28) and can be screwed into the threaded receptacle (43), and in that the chisel holder (20) can be adjusted with fastening screw released.
  8. Chisel holder changing system according to Claim 7, characterized in that the elongated hole (28) widens to form a recess (27) in which a screw head (32) of the fastening screw is accommodated.
  9. Chisel holder changing system according to Claim 8, characterized in that the screw head (32) is designed as a fillister head.
  10. Chisel holder changing system according to one of Claims 1 to 9, characterized in that the chisel holder (20) has a holding extension (21) on its parent body (25), in that the holding extension (21) has a locating hole (22) for a chisel shank of the chisel (10), and in that the holding extension (21) is connected to the parent body (25) via a predetermined breaking point (25.2).
EP00904946A 1999-02-27 2000-01-22 Chisel holder changing system Expired - Lifetime EP1159511B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19908656 1999-02-27
DE19908656A DE19908656C1 (en) 1999-02-27 1999-02-27 Chisel holder changing system
PCT/EP2000/000477 WO2000052303A1 (en) 1999-02-27 2000-01-22 Chisel holder changing system

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EP1159511A1 EP1159511A1 (en) 2001-12-05
EP1159511B1 true EP1159511B1 (en) 2006-05-17

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US (1) US6619756B1 (en)
EP (1) EP1159511B1 (en)
JP (1) JP3392827B2 (en)
AT (1) ATE326612T1 (en)
DE (2) DE19908656C1 (en)
WO (1) WO2000052303A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9033425B2 (en) 2010-01-20 2015-05-19 Element Six Gmbh Pick tool and method for making same

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20010100A1 (en) 2001-05-08 2002-11-08 Bitelli Spa SUPPORT BASE FOR TOOL HOLDERS OF MILLING DRUMS FOR SCARIFYING MACHINES AND PROTECTION COVER FOR THE SUPPORT BASE
US6745858B1 (en) * 2001-08-24 2004-06-08 Rock Bit International Adjustable earth boring device
DE102004019383B4 (en) * 2004-04-19 2008-06-12 Wirtgen Gmbh Device for holding a shank bit
DE102005010678B4 (en) * 2005-03-09 2006-12-14 Gerd Elfgen Device for fastening a round shank chisel
US8469456B2 (en) 2009-03-25 2013-06-25 Wirtgen Gmbh Ejector unit for a road milling machine or the like
JP5984832B2 (en) * 2010-12-03 2016-09-06 ヴィルトゲン ゲゼルシャフト ミット ベシュレンクテル ハフツングWirtgen GmbH Chisel holder
SG190927A1 (en) 2010-12-03 2013-07-31 Wirtgen Gmbh Chisel holder, and chisel holder system comprising a chisel holder and a base part
CN106906729B (en) 2010-12-03 2020-06-12 维特根有限公司 Knife rest
DE102010061019A1 (en) * 2010-12-03 2012-06-06 Betek Gmbh & Co. Kg Chisel holder and lower tool part for a chisel holder
JP5822939B2 (en) * 2010-12-03 2015-11-25 ヴィルトゲン ゲーエム ベーハーWirtgen Gesellschaft Mit Beschrankter Haftung Chisel holder, and chisel holder system comprising the chisel holder and base portion
GB201105438D0 (en) 2011-03-31 2011-05-18 Element Six Holding Gmbh Pick apparatus and pick tools
USD667855S1 (en) 2011-04-11 2012-09-25 Betek Gmbh & Co. Kg Base for a chisel holder
USD667856S1 (en) 2011-04-11 2012-09-25 Betek Gmbh & Co. Kg Chisel holder
PL2543814T3 (en) * 2011-07-04 2018-02-28 Wirtgen Gmbh Chisel holder and chisel holder system with a chisel holder and a base section
DE102011051525A1 (en) 2011-07-04 2013-01-10 Wirtgen Gmbh Chisel holder for a soil tillage machine
USD666642S1 (en) 2011-07-04 2012-09-04 Wirtgen Gmbh Chisel holder
DE102012012615A1 (en) * 2012-06-19 2013-12-19 Bomag Gmbh Ejector for a mobile tillage machine
DE102012108935A1 (en) * 2012-09-21 2014-03-27 Thyssenkrupp Resource Technologies Gmbh Arrangement of a crushing tooth on a crushing roller of a roll crusher
CN103334752A (en) * 2013-06-28 2013-10-02 黑龙江科技学院 Duplex pickaxe type cutting tooth holder of drum shearer
DE102013110676A1 (en) * 2013-09-26 2015-03-26 Betek Gmbh & Co. Kg chisel
EP3116769A4 (en) 2014-03-07 2017-12-27 Vermeer Manufacturing Company Replaceable mounting apparatus for reducing elements
USD746340S1 (en) 2014-04-11 2015-12-29 Vermeer Manufacturing Company Mounting block for reducing elements
USD746878S1 (en) 2014-04-11 2016-01-05 Vermeer Manufacturing Company Mounting block for reducing elements
CN106149535B (en) * 2015-03-27 2019-04-12 永沛得股份有限公司 Cutting tool gripper
DE102016108808A1 (en) 2016-05-12 2017-11-16 Betek Gmbh & Co. Kg Chisel with a support element with a spigot
CN109338856B (en) * 2018-12-11 2023-11-21 三一汽车制造有限公司 Vibrating knife and paver
US10934840B1 (en) * 2019-08-27 2021-03-02 Kennametal Inc. Self-aligning adapter block
USD909165S1 (en) 2019-08-27 2021-02-02 Kennametal Inc Adapter block
DE102021112757A1 (en) 2021-05-17 2022-11-17 Bomag Gmbh CHANGE HOLDER, BITS CHANGE HOLDER SYSTEM, MILLING DRUM FOR A ROAD MILLING MACHINE AND ROAD MILLING MACHINE

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1999193A (en) * 1930-04-17 1935-04-30 Sullivan Machinery Co Cutter chain
US2458946A (en) * 1945-08-28 1949-01-11 Edwin F Johnston Bit holder for coal-cutting chains
GB723855A (en) * 1951-12-13 1955-02-09 Eickhoff Geb Improvements in or relating to cutting tools, especially cutter-chains of mining machines, comprising pick-holders
BE565605A (en) * 1957-03-16
US2972802A (en) * 1957-10-10 1961-02-28 William B Stein Milling cutter with adjustable radial rake
US3749449A (en) * 1971-10-13 1973-07-31 Cincinnati Mine Machinery Co Means for removably affixing cutter bit and lug assemblies to driven elements of a mining machine or the like
GB1573505A (en) 1977-11-24 1980-08-28 Padley & Venables Ltd Pick holder assemblies and pick holding blocks therefor
FR2536113B1 (en) * 1982-11-13 1987-12-11 Ruhrkohle Ag EXTRACTION DEVICE, PARTICULARLY FOR UNDERGROUND MINING OPERATIONS, PROVIDED WITH A REMOVABLE BIT OF THE ROTATING AND TIPPING TYPE
DE3339558A1 (en) 1982-11-13 1985-05-09 Peters, Albert, 4000 Düsseldorf WINNING DEVICE WITH TURN-TIP CHISEL AND CLOSED CHISEL BAG
DE3440448A1 (en) * 1984-02-08 1985-08-08 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen CHISEL ARRANGEMENT, ESPECIALLY FOR CARBON
US4650255A (en) * 1985-04-11 1987-03-17 Ewid Limited Retainer for holding mineral cutter in a tool-box
DE3608786A1 (en) * 1986-03-15 1987-09-17 Gewerk Eisenhuette Westfalia CHISEL ARRANGEMENT, ESPECIALLY FOR CARBON AND THE LIKE
US5007685A (en) * 1989-01-17 1991-04-16 Kennametal Inc. Trenching tool assembly with dual indexing capability
US5078540A (en) * 1990-08-24 1992-01-07 Astec Industries, Inc. Asphalt pavement milling machine and cutter drum therefor
DE4322401C2 (en) * 1993-07-06 1996-06-20 Betek Bergbau & Hartmetall Attachment of a cutting tool to a cutting body
FR2717756B1 (en) * 1994-03-23 1996-05-15 Journee Paul Sa Motor vehicle windscreen wiper comprising means for orienting the drive head.
US6106181A (en) * 1996-01-29 2000-08-22 Rittal-Werk Rudolf Loh Gmbh & Co. Kg Control apparatus with control panel
AT408017B (en) * 1997-06-25 2001-08-27 Tamrock Voest Alpine Bergtech CHISEL ARRANGEMENT FOR CUTTING CHISELS OF A ROTATING BEARING TOOL HOLDER
US5836561A (en) * 1997-07-28 1998-11-17 Hwa Shin Musical Instrument Co., Ltd. Angle-adjustable cymbal holder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9033425B2 (en) 2010-01-20 2015-05-19 Element Six Gmbh Pick tool and method for making same

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JP3392827B2 (en) 2003-03-31
WO2000052303A1 (en) 2000-09-08
JP2002538339A (en) 2002-11-12
ATE326612T1 (en) 2006-06-15
DE19908656C1 (en) 2000-08-31
EP1159511A1 (en) 2001-12-05
US6619756B1 (en) 2003-09-16
DE50012771D1 (en) 2006-06-22

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