Cutting wheel for a diaphragm wall cutter and method for converting a cutting wheel

Abstract

The invention relates to a cutting wheel for a diaphragm wall cutter, with a drum-shaped hub, on the outer circumference of which there are arranged receptacles for cutting teeth and at least one holder for a folding tooth, wherein the holder has a bearing pin as a pivot axis for pivotably and releasably holding the folding tooth. According to the invention, it is provided that a fixing device is arranged on the holder and is configured to hold a fixed tooth mounted on the bearing pin in a fixed position.

1 . A milling wheel for a diaphragm wall cutter, having a drum-shaped hub, on the outer circumference of which there are arranged receptacles for cutting teeth and at least one holder for a folding tooth, wherein the holder has a bearing pin for holding the folding tooth pivotably and releasably about a pivot axis, wherein
 a fixing device is arranged on the holder and is configured to hold a fixed tooth mounted on the bearing pin in a fixed position.   
     
     
         2 . The milling tooth according to  claim 1 , wherein
 the holder has two bearing blocks which are spaced apart from one another and between which the bearing pin extends and is releasably mounted thereon.   
     
     
         3 . The milling wheel according to  claim 1 , wherein
 a first receiving hole for receiving a first end of the bearing pin is designed on a first bearing block and a second receiving hole for receiving a second end of the bearing pin is designed on a second bearing block.   
     
     
         4 . The milling wheel according to  claim 3 , wherein
 at least one receiving hole is configured as a through-hole for inserting and/or sliding out the bearing pin.   
     
     
         5 . The milling wheel according to  claim 1 , wherein
 the fixing device has at least one locking hole for receiving a locking pin in the holder.   
     
     
         6 . The milling wheel according to  claim 5 , wherein
 two locking holes are provided, and   a first locking hole is designed on the first bearing block and a second locking hole is designed on the second bearing block.   
     
     
         7 . The milling wheel according to  claim 1 , wherein
 a folding tooth is pivotably mounted on the bearing pin, in order to form a cutting wheel with a folding tooth on the at least one holder.   
     
     
         8 . The milling wheel according to  claim 7 , wherein
 a dummy plug is inserted into the at least one locking hole to form a cutting wheel with a folding tooth.   
     
     
         9 . The milling wheel according to  claim 1 , wherein
 a fixed tooth is mounted on the bearing pin to form a cutting wheel with a fixed tooth and is fixedly held by means of the fixing device.   
     
     
         10 . The milling wheel according to  claim 9 , wherein
 for forming a cutting wheel with the fixed tooth, a locking pin is inserted into the at least one locking hole for fixedly holding the fixed tooth, and   the at least one locking pin extends into a suitable recess in the fixed tooth and thus fixes the fixed tooth on the bearing pin.   
     
     
         11 . A diaphragm wall cutter with a cutter frame, on the underside of which at least one end shield is arranged for rotatably supporting at least one cutting wheel, wherein
 at least one cutting wheel according to  claim 1  is arranged.   
     
     
         12 . A method for converting a cutting wheel according to  claim 1 , wherein
 a folding tooth is pivotably mounted on the bearing pin of the at least one holder of the cutting wheel and is released and removed, and   a fixed tooth is arranged on the bearing pin and is held in a fixed position on the holder by the fixing device.   
     
     
         13 . The method according to  claim 12 , wherein
 the fixed tooth on the holder of the cutting wheel is released from the bearing pin and removed, and   a folding tooth is arranged on the bearing pin and is pivotably mounted on the bearing pin of the at least one holder of the cutting wheel.