Wirtgen Gmbh

Andreas Jost

Thomas Lehnert

Cyrus Barimani

Karsten Buhr

Günter Hähn

Martin Lenz

Sebastian Hofrath

Chisel holder

The invention relates to an interchangeable chisel holder () which can be fixed to a milling drum () of a ground-working machine (), having a forward chisel holder () for the interchangeable holding of a forward chisel (), preferably a round-shaft chisel, and having a rearward chisel (), which is held on the interchangeable chisel holder (), wherein, as based on a working movement () of the interchangeable chisel holder () when used in the ground-working machine (), the rearward chisel () is arranged behind the forward chisel holder (). In such an interchangeable candleholder () provision can be made, according to the invention, for the rearward chisel () to be held on the interchangeable chisel holder () axially and fixed in the circumferential direction of the chisel holder. Maintenance-induced stoppages of the ground-working machine can thus be reduced and the loss of chisels can at least be lowered.

Interchangeable chisel holder

The invention relates to a tool combination consisting of a chisel holder, which can be fastened to a milling drum of a soil tillage machine, and at least one leading and one trailing chisel, which are retained on the chisel holder, wherein the trailing chisel is arranged after the leading chisel, based on a working movement of the tool combination in use in the soil tillage machine, and wherein each chisel has a chisel tip having a cutter. According to the invention the trailing chisel tip of the trailing chisel has, at least in some areas, a greater hardness than the leading chisel tip of the leading chisel. Thus stoppage times of the soil tillage machine for maintenance can be reduced and the loss of chisels can at least be decreased.

Tool combination having a chisel holder and two chisels

Chisel

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Koenigswinter, Germany

Andreas Jost